Goods & Services

Sewing machines; Ironing machines; Pedal drives for sewing machines; Machines for the textile industry; Stitching machines; Cloth cutting machines; Rotary steam presses, portable, for fabrics; Industrial sewing machine bedplate; Scissors, electric; Leather-working machines; Motors, other than for land vehicles; Hemming machines.

Abstract

The present invention provides an ad hoc networking method for industrial equipment, industrial equipment, a gateway, and a medium. The method comprises: receiving and storing an identification code of a subject to which a network belongs; and when it is detected that the strength of a network signal is lower than a preset signal strength threshold, industrial equipment autonomously searching for and connecting to a gateway having the same identification code, so as to re-access the network of the subject. According to the present invention, identification codes are assigned to industrial equipment, so that the equipment can still accurately access a corresponding network when the equipment is re-networked even if the equipment moves or a gateway fails, etc., thereby improving the overall security of an industrial network; the equipment to which the identification codes have been assigned do not need to be verified by a server, thereby reducing the processing pressure of the server end; the equipment automatically selects a gateway having a higher signal strength to ensure that each piece of equipment can be connected with the most suitable gateway; a dynamic updating mechanism is formed for a binding list of a gateway, thereby ensuring the efficiency and real-time performance of networking; and double verification is carried out on the basis of the identification codes and equipment serial numbers, thereby ensuring the security of a system.

IPC Classes  ?

• H04W 36/00 - Handoff or reselecting arrangements
• H04W 36/30 - Reselection being triggered by specific parameters by measured or perceived connection quality data
• H04W 48/16 - Discovering; Processing access restriction or access information
• H04W 76/11 - Allocation or use of connection identifiers
• H04W 84/18 - Self-organising networks, e.g. ad hoc networks or sensor networks

Abstract

Provided in the present invention are a networking method for an Internet of Things sewing device, a storage medium, a relay, and a system, comprising: by means of a relay provided with an NFC reading module, reading device information from an NFC tag of a sewing device to be networked, the device information comprising a device code; and, on the basis of the device code, establishing a wireless communication connection between said sewing device and the relay. The networking means for a smart Internet of Things sewing device provided in the present invention is faster and more efficient, binding in the networking process does not require confirmation of the device code of a sewing device by each device and can be obtained by means of direct card reading; if a process changes, a sewing device can be quickly unbound and re-networked, greatly improving networking flexibility, and improving production efficiency; networking between a relay and a sewing device only requires that the relay be powered on to directly network, and read data can be stored in a memory first, and then the related data can be uploaded after the relay connects to a server.

IPC Classes  ?

• H04W 4/70 - Services for machine-to-machine communication [M2M] or machine type communication [MTC]

Abstract

The present invention provides an Internet of Things-based sewing device management system and method, a terminal, and a medium, and comprises: a smart terminal; and a server, which establishes a communication connection with the smart terminal, and establishes a communication connection with sewing device equipped with an Internet of Things communication module. The server receives sewing parameters from the sewing device, and sends the sewing parameters and alarm information of the sewing device under abnormal conditions to the smart terminal. According to the present invention, an operator and a sewing machine operated thereby are virtually bundled, and a working state mode of the operator is identified by using the standby, operation and shutdown of the sewing machine, so that a supervisor can simultaneously manage an entire site of operators while avoiding omissions caused by observation blind spots of inspection staff. By means of an alarm mechanism of a current standby time t, the inspection staff can identify onsite a region or object on which to focus inspection, so that the inspection work intensity of the supervisor is greatly reduced.

IPC Classes  ?

• G05B 19/048 - Monitoring; Safety

Abstract

The present invention relates to the technical field of sewing machines, and relates in particular to a thread cutting apparatus of a sewing machine and a sewing machine comprising said thread cutting apparatus, the thread cutting apparatus comprising a motor, a drive crank rotated by the rotation of the motor, a roller disposed on the drive crank, and a long crank connected to a thread cutting mechanism, the long crank comprising a drive part and a limiting part, the drive part having a thread cutting contour surface, the thread cutting contour surface comprising a thread cutting section driven by the roller to drive the thread cutting mechanism to execute a thread cutting action, the limiting part having an inner side surface with a track groove formed opposite and at an interval to the thread cutting section, and the roller moving along the track groove when passing the thread cutting section. Also relating to a thread cutting control method for a sewing machine, using the thread cutting apparatus. There will be no noise caused by jumping due to excessive thread cutting speed.

IPC Classes  ?

• D05B 65/00 - Devices for severing the needle or lower thread in sewing machines
• D05B 65/02 - Devices for severing the needle or lower thread in sewing machines controlled by the sewing mechanisms

Abstract

The present invention provides a sewing machine transmission structure, comprising a tooth adjustment transmission mechanism, a thread cutting transmission mechanism, a presser foot lifting transmission mechanism, and a drive shaft. The drive shaft provides power for the tooth adjustment transmission mechanism, the thread cutting transmission mechanism, and the presser foot lifting transmission mechanism. When the drive shaft drives the thread cutting transmission mechanism to act, and the drive shaft drives the presser foot lifting mechanism to act, the transmission between the drive shaft and the tooth adjustment transmission mechanism fails. The tooth adjustment transmission mechanism comprises a tooth adjustment crank, a tooth adjustment shaft, a tooth adjustment connecting rod, and a tooth adjustment tension spring. The tooth adjustment crank is fixed to the tooth adjustment shaft. The tooth adjustment shaft is connected to a tooth lifting swing seat. One end of the tooth adjustment connecting rod is hingedly connected to the tooth adjustment crank, and a receiving slot is provided on the other end of the tooth adjustment connecting rod. A tooth adjustment driving piece is mounted on the drive shaft. The tooth adjustment driving piece is slidably connected to the receiving slot. The tooth adjustment tension spring is connected between the tooth adjustment crank and a sewing machine. According to the present application, a same power source is used to realize automatic thread cutting, automatic presser foot lifting, and tooth lifting height adjustment, so that the structure of the sewing machine is simplified, and the production cost of the sewing machine is reduced.

IPC Classes  ?

• D05B 65/00 - Devices for severing the needle or lower thread in sewing machines
• D05B 27/24 - Feed-dog lifting and lowering devices
• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 29/00 - Pressers or presser feet for sewing machines

Abstract

The present invention provides a control apparatus and method for a sewing machine. The sewing machine comprises a main shaft, a feed dog bracket, feed dogs, a feed dog lifting unit, a feeding unit, a presser foot lift mechanism, a driving motor, a needle pitch adjusting cam and a presser foot lift cam which are both driven by the driving motor to rotate, a needle pitch adjusting transmission unit, and a presser foot lift transmission unit. The feeding unit has a feeding swing seat for determining the needle pitch of the sewing machine; the needle pitch adjusting cam is connected to the feeding swing seat by means of the needle pitch adjusting transmission unit, and the presser foot lift cam is connected to the presser foot lift mechanism by means of the presser foot lift transmission unit; a motor shaft of the driving motor operates in a presser foot lift corner area, there is no power transmission between the needle pitch adjusting cam and the needle pitch adjusting transmission unit, and there is power transmission between the presser foot lift cam and the presser foot lift transmission unit. In the present application, the needle pitch adjusting transmission unit does not move during the presser foot lift process, thereby ensuring that the feed dogs remain stationary in the presser foot lifting and lowering process and the needle pitch of the sewing machine does not change, and satisfying requirements of a special sewing process.

IPC Classes  ?

• D05B 29/02 - Presser-control devices
• D05B 27/22 - Work-feeding means for sewing machines with means for setting length of stitch

Abstract

The present invention provides a flexibly adjustable feeding and thread hooking mechanism and a sewing machine. The flexibly adjustable feeding and thread hooking mechanism comprises a feed dog rack, feed dogs, and a teeth rising and thread hooking module; the teeth rising and thread hooking module comprises a teeth rising and thread hooking driving source, a rotatable rotary hook, a teeth rising connection portion provided at one end of the feed dog rack, and a teeth rising and thread hooking transmission mechanism; the teeth rising and thread hooking driving source is connected to the rotary hook and the teeth rising connection portion of the feed dog rack by means of the teeth rising and thread hooking transmission mechanism; and the teeth rising and thread hooking driving source is independent of a driving source in the sewing machine for driving the operation of a needle. In the present application, a teeth rising function and a thread hooking function of the sewing machine are integrated into an independent function module; and the independent teeth rising and thread hooking driving source is used to drive thread hooking and teeth rising, such that the relative timing between the teeth rising and thread hooking driving source and the driving source in the sewing machine for driving the operation of the needle can be adjusted, thereby adjusting the matching timing between the rotary hook and the needle, and the matching timing between an up-and-down reciprocating motion of the feed dogs and the needle, and greatly improving the sewing adaptability of the sewing machine.

IPC Classes  ?

• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 27/24 - Feed-dog lifting and lowering devices
• D05B 57/38 - Shuttle drives
• D05B 69/02 - Mechanical drives

Abstract

Disclosed is a feed lifting thread hooking module for a sewing machine, the module being characterized in comprising a feed lifting thread hooking housing; a sewing platform is disposed on the upper side of the feed lifting thread hooking housing; a feed lifting thread hooking driving source and a rotating shuttle are disposed on the feed lifting thread hooking housing; a rack is disposed on the feed lifting thread hooking housing, and a feed dog exposed on the sewing platform is disposed at the upper end of the rack; a feed lifting connecting part is disposed at one end of the rack; a feed lifting cloth hooking driving component is disposed in the feed lifting thread hooking housing; and the feed lifting thread hooking driving source is connected to the rotating shuttle and the feed lifting connecting part of the rack by means of the feed lifting thread hooking driving component. The benefits of the present invention are that the feed lifting thread hooking module for a sewing machine is driven by an independent power supply, so that the timing of movement can be independently adjusted, thereby shortening the transmission chain of the sewing machine as a whole.

IPC Classes  ?

• D05B 73/04 - Lower casings
• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 27/24 - Feed-dog lifting and lowering devices
• D05B 57/38 - Shuttle drives

Abstract

The present invention provides a fabric feeding module of a sewing machine, the fabric feeding module being mounted on a lower side of a sewing table and comprising a tooth rack and fabric feeding teeth mounted on the tooth rack, and further comprising a fabric feeding structure for driving the fabric feeding teeth to move back and forth in a fabric feeding direction, and a tooth lifting structure for driving the fabric feeding teeth to move up and down, wherein the fabric feeding structure comprises a fabric feeding flexible assembly for providing a degree of freedom for a first fabric feeding swing rod during fabric feeding, and the tooth lifting structure comprises a tooth lifting flexible assembly for providing a degree of freedom for the first tooth lifting swing rod during fabric feeding. The fabric feeding module in the present invention is completely independent of a fabric pricking spindle of the sewing machine, such that the time sequence for the cloth feeding module can be freely adjusted relative to the cloth pricking time sequence for the spindle, and the problem in the prior art of limited adjustment of a fabric feeding time sequence is solved.

IPC Classes  ?

• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 27/00 - Work-feeding means for sewing machines

Abstract

A cloth-puncturing take-up module for a sewing machine comprises a cloth-puncturing take-up shell, the cloth-puncturing take-up shell being provided with a needle and a cloth-puncturing take-up drive source for driving the needle to make a longitudinally reciprocating movement, a take-up lever being arranged in the cloth-puncturing take-up shell, and the cloth-puncturing take-up drive source driving the take-up lever to swing up and down. The present cloth-puncturing take-up module for a sewing machine combines the components for implementing cloth-puncturing and take-up functions to form a modular structure driven by the cloth-puncturing take-up drive source, arranged jointly in the cloth-puncturing take-up shell such that the movement sequence of the cloth-puncturing and take-up function components can be adjusted independently, shortening the entire transmission chain of the sewing machine, increasing the convenience of control and scheduling of the sewing machine, and facilitating maintenance of the sewing machine.

IPC Classes  ?

• D05B 69/10 - Electrical or electromagnetic drives
• D05B 49/00 - Take-up devices, e.g. levers, for the needle thread of sewing machines

Abstract

The present invention provides a transmission mechanism for a sewing machine. The transmission mechanism comprises a feed lifting mechanism, a presser foot lifting mechanism, a thread trimming mechanism, a thread loosening mechanism, a driving motor, a feed adjusting driving member, a presser foot lifting driving member, a thread trimming driving member, a thread loosening driving member, a feed adjusting transmission mechanism in transmission fit with the feed adjusting driving member, a presser foot lifting transmission mechanism in transmission fit with the presser foot lifting driving member, a thread trimming transmission mechanism in transmission fit with the thread trimming driving member, and a thread loosening transmission mechanism in transmission fit with the thread loosening driving member. The feed adjusting driving member, the presser foot lifting driving member, the thread trimming driving member, and the thread loosening driving member are all driven by the driving motor to rotate; the feed adjusting transmission mechanism is connected to a feed lifting swing base in the feed lifting mechanism; the presser foot lifting transmission mechanism is connected to the presser foot lifting mechanism; the thread trimming transmission mechanism is connected to the thread trimming mechanism; the thread loosening transmission mechanism is connected to the thread loosening mechanism. According to the present application, the same driving motor is used to achieve automatic presser foot lifting, the tooth height is adjusted, automatic thread trimming and loosening are achieved, the overall structure of the sewing machine is simplified, the cost is reduced, and the sewing efficiency is improved.

IPC Classes  ?

• D05B 69/02 - Mechanical drives

Abstract

Provided are a control system and method for a sewing process parameter. The control system comprises: a sewing device; a server, which is used for configuring garments of different styles, sewn by the sewing device, with device process parameter information corresponding to procedures, and generating information identifiers for different cut pieces on the garment of the style according to the device process parameter information; and a visual terminal, which reads, when an operator of the sewing device receives a style task, identifier data in the information identifiers bound to the cut pieces, and transmits the read identifier data to the server, wherein after receiving the identifier data in the information identifiers, the server combines the identifier data with the device process parameter information of the sewing device, so as to generate a parameter modification instruction for the style task, and transmits same to the sewing device. By means of the present invention, the trigger of a modified process parameter can be issued to a specific station, and when the station starts the production of a new style, a parameter of a sewing machine can be adjusted in a timely manner, without requiring additional waiting time, thereby improving the production efficiency.

IPC Classes  ?

• D05B 19/02 - Sewing machines having electronic memory or microprocessor control unit
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors

Abstract

Provided are a device parameter management system and method for a sewing device, and a computer storage medium. The device parameter management system comprises: a visual terminal, which is used for generating and sending login information of a user once the user enters a parameter modification page; and a serving end, which is used for: receiving the login information, and according to the login information, searching for a user permission configuration that matches the user; and upon receiving an operation instruction of the visual terminal for the user permission configuration, calling a corresponding interface of a sewing device according to the operation instruction, and remotely executing, by means of the corresponding interface of the sewing device, a permission management operation corresponding to the operation instruction. By means of the present invention, important parameters, etc. of a sewing device are remotely locked in batches, thereby ensuring that preset parameters are not modified by operators, and improving the efficiency of management; and by means of adding a locking identification bit to controller parameters, a remote adjustment function of an Internet-of-Things device can be more subdivided, thereby ensuring the strictness of subsequent permission management.

IPC Classes  ?

• D05B 19/10 - Arrangements for selecting combinations of stitch or pattern data from memory
• D05B 19/02 - Sewing machines having electronic memory or microprocessor control unit
• G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
• G07C 3/02 - Registering or indicating working or idle time only
• H04W 48/00 - Access restriction; Network selection; Access point selection

Abstract

A sewing machine integrating presser foot lifting and thread tension adjustment, comprising: a presser foot lifting assembly, comprising a presser bar (21) that can move up and down, a presser foot (22) mounted at the lower end of the presser bar (21), and a guide member (23) fixed on the presser bar (21); a thread clamp, comprising a thread clamping bar (31) that can move axially, a thread clamping piece (32) and a thread clamping spring (33) sleeved on the thread clamping bar (31), and a spring limiting member (34) mounted on the thread clamping bar (31), both ends of the thread clamping spring (33) abutting against the thread clamping piece (32) and the spring limiting member (34); a drive motor (40); and a driving mechanism, comprising a drive crank (50) driven to rotate by the drive motor (40), a presser foot lifting clutch assembly connected between the drive crank (50) and the guide member (23), and a thread tension adjustment clutch assembly connected between the drive crank (50) and the thread clamping bar (31). According to the present invention, the cost of the sewing machine can be reduced, the structure of the sewing machine can be optimized, and the noise generated when lifting and lowering the presser foot (22), when adjusting the thread tension, when the thread clamp clamps a thread, and when the thread clamp releases a thread can be reduced; moreover, the lifting height of the presser foot (22) is controllable, so that the presser foot (22) can be lifted up to any height below the highest point.

IPC Classes  ?

• D05B 29/02 - Presser-control devices
• D05B 29/06 - Presser feet
• D05B 29/00 - Pressers or presser feet for sewing machines
• D05B 47/04 - Automatically-controlled tensioning devices
• D05B 47/00 - Needle-thread tensioning devices for sewing machines; Applications of tensometers in sewing machines

Abstract

A sewing machine, comprising a presser foot lifting assembly (20). The presser foot lifting assembly comprises a presser rod (21) capable of moving up and down, a presser foot (22) mounted at the lower end of the presser rod, and a guide frame (23) fixed on the presser rod. The sewing machine further comprises a drive source, a drive crank (50) driven by the drive source to rotate, an automatic presser foot lifting clutch assembly (60) connected between the drive crank and the guide frame, a handle (80) located on the outer side of a sewing machine housing (10), and a manual presser foot lifting clutch assembly (90) connected between the handle and the guide frame. When the automatic presser foot lifting clutch assembly enables power transmission between the drive crank and the guide frame, the manual presser foot lifting clutch assembly disables power transmission between the handle and the guide frame; when the manual presser foot lifting clutch assembly enables power transmission between the handle and the guide frame, the automatic presser foot lifting clutch assembly disables power transmission between the drive crank and the guide frame. The presser foot of the sewing machine can not only be automatically lifted, but also can be lifted manually, so that the operational convenience is improved, and usage properties of the sewing machine are improved.

IPC Classes  ?

• D05B 29/02 - Presser-control devices
• D05B 47/04 - Automatically-controlled tensioning devices

Abstract

Disclosed is an automatic presser foot pressure-adjusting device, comprising a pressing rod (1), a presser foot (2) installed at the lower end of the pressing rod, a pressure-adjusting driving source (3), and a pressure-adjusting driving rod (4) installed in a sewing machine housing in a vertically moving manner. The pressure-adjusting driving source is connected to the pressure-adjusting driving rod and drives the pressure-adjusting driving rod to move vertically, and the lower end of the pressure-adjusting driving rod is connected to the upper end of the pressing rod. The pressure-adjusting driving source can drive the pressure-adjusting driving rod to move vertically, different outputs of the pressure-adjusting driving source correspond to different moving strokes of the pressure-adjusting driving rod, and the pressure-adjusting driving rod acts on the presser foot by means of the pressing rod, such that the pressure of the presser foot is adjusted, the presser foot is automatically lifted, and the lifting height of the presser foot is adjustable. The adjusting device is automatically operated, has the advantages of being quick in response, accurate in response and capable of reducing the labor intensity of workers, can improve the usage experience and performance of sewing, and improves the quality and the sewing efficiency of sewn products.

IPC Classes  ?

• D05B 29/02 - Presser-control devices

Abstract

A sewing machine and an upper thread tension adjustment and bird nest reduction device (2) thereof. The upper thread tension adjustment and bird nest reduction device (2) comprises a driving part (4). The driving part (4) is connected to an upper thread tension transmission assembly and a bird nest reduction transmission assembly. The upper thread tension transmission assembly is connected to an upper thread tension adjustment assembly for changing the size of the upper thread tension. The driving part (4) drives the upper thread tension transmission assembly to move, so that the upper thread tension adjustment assembly adjusts the size of the upper thread tension. The bird nest reduction transmission assembly is connected to a thread hooking assembly (7) for implementing thread hooking. The driving part (4) drives the bird nest reduction transmission assembly to move, so that the thread hooking assembly (7) performs thread hooking. According to the upper thread tension adjustment and bird nest reduction device (2), the two functions, i.e., upper thread tension adjustment and bird nest reduction control, are achieved separately by using the driving part (4), thereby simplifying the structural space to a certain extent and achieving the effect of saving electric energy.

IPC Classes  ?

• D05B 47/04 - Automatically-controlled tensioning devices
• D05B 47/00 - Needle-thread tensioning devices for sewing machines; Applications of tensometers in sewing machines

Abstract

A feed lifting rock shaft assembly, comprising a front feed lifting rock shaft (12) and a rear feed lifting rock shaft (18) that are arranged in parallel; the front feed lifting rock shaft is fixedly provided with a front feed lifting rock crank (14), and the rear feed lifting rock shaft is fixedly provided with a rear feed lifting rock crank (16); the front feed lifting rock crank is rotatably connected to a first end of a front feed lifting rock swing plate (20), and the rear feed lifting rock crank is rotatably connected to a first end of a rear feed lifting rock swing plate (21); and a second end of the front feed lifting rock swing plate and a second end of the rear feed lifting rock swing plate are both rotatably connected to one end of a driving device, respectively. After the driving device carries out driving, the included angle between the front feed lifting rock crank and the rear feed lifting rock crank changes so that the front feed lifting rock shaft and the rear feed lifting rock shaft rotate relative one another so as to adjust the height of a feed dog. The present invention also relates to a sewing machine provided with the described feed lifting rock shaft assembly. The feed lifting rock shaft assembly can conveniently and quickly control the height of a feed dog, thereby achieving the function of automatically adjusting the height of the teeth of the feed dog.

IPC Classes  ?

• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 27/24 - Feed-dog lifting and lowering devices

Abstract

A feed lifting rock trimming assembly and a sewing machine comprising same. The feed lifting rock trimming assembly comprises a drive portion (2), and a front feed lifting rock shaft (12) and a rear feed lifting rock shaft (18) which are provided in parallel. The front feed lifting rock shaft (12) is fixedly provided with a front feed lifting rock crank (14); the rear feed lifting rock shaft (18) is fixedly provided with a rear feed lifting rock crank (16); the front feed lifting rock crank (14) is rotatably connected to a first end of a front feed lifting rock swing plate (20); the rear feed lifting rock crank (16) is rotatably connected to a first end of a rear feed lifting rock swing plate (21); the drive portion (2) is connected to a feed lifting rock drive device and a trimming drive device (501); a second end of the front feed lifting rock swing plate (20) and a second end of the rear feed lifting rock swing plate (21) are rotatably connected to one end of the feed lifting rock drive device, separately; after the drive portion (2) drives, the height of a feed dog is adjusted; the trimming drive device (501) is connected to a trimming drive portion (07); after the drive portion (2) drives, the trimming drive portion (07) and a trimming cam (05) can synchronously rotate to achieve trimming. The feed lifting rock trimming assembly can conveniently and rapidly control the height of the feed dog, can achieve the linkage of feed lifting rock and a trimming operation, and reduces the structural complexity while improving the production efficiency.

IPC Classes  ?

• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 65/00 - Devices for severing the needle or lower thread in sewing machines

Abstract

A sewing machine, comprising a presser foot connecting rod (32, 77) and a swing plate seat (10, 69), and further comprises a cam crank (3, 65) and a crank driving device (1, 61) used for driving the cam crank to rotate around a cam rotating center on the cam crank. The cam crank is connected to an output end of the crank driving device; the cam crank comprises a presser foot adjusting part and a plate seat adjusting part; in a presser foot mode, the cam crank rotates and drives the presser foot connecting rod to move by means of the presser foot adjusting part; in a needle pitch adjusting mode, the cam crank rotates and pushes the swing plate seat to move by means of the plate seat adjusting part. Different parts on the cam crank are adopted to drive the presser foot connecting rod and the swing plate seat respectively, the functions of automatic backstitch, automatic dense seam and automatic presser foot can be achieved only by providing one crank driving device, the needle pitch can be adjusted, a backstitch electromagnet, a dense seam electromagnet and a presser foot electromagnet can be omitted, and the occupied space of the sewing machine can be saved.

IPC Classes  ?

• D05B 29/02 - Presser-control devices
• D05B 69/14 - Devices for changing speed or for reversing direction of rotation
• D05B 69/20 - Control devices responsive to the number of stitches made

Abstract

A sewing machine feeding mechanism (100). A main shaft driving member (21) can drive a feed dog (11) to do reciprocating translational motion relative to a needle plate (10); a feed dog driving member (40) is connected to a feed dog rack (12), and the feed dog driving member (40) can drive the feed dog (11) to do reciprocating raising motion relative to the needle plate (10); the main shaft driving member (21) and the feed dog driving member (40) are both connected to a controller; and the controller can control operation of the main shaft driving member (21) and the feed dog driving member (40). The two driving members of the sewing machine feeding mechanism (100) respectively control translational and lifting motion of the feed dog (11), changes of the transmission speeds of the main shaft driving member (21) and the feed dog driving member (40) can make the feed dog (11) form multiple cloth feeding forms, so that sewing material styles are diversified, and the controller can coordinate motion of the main shaft driving member (21) and the feed dog driving member (40) to ensure normal sewing. Provided is a sewing machine comprising the sewing machine feeding mechanism (100). The sewing material styles of the sewing machine are diversified, and the sewing machine has broad application prospects.

IPC Classes  ?

• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 27/24 - Feed-dog lifting and lowering devices
• D05B 69/18 - Devices for changing speed or for reversing direction of rotation electric

Abstract

A feeding mechanism (100) of a sewing machine. The feeding mechanism comprises a needle plate (10), a feed dog (20) provided below the needle plate (10), and a tooth rack (30) fixedly connected to the feed dog (20), and further comprises a lifting assembly (40), a translational assembly (50), and a controller. The lifting assembly (40) comprises a lifting driving member (41), the lifting driving member (41) is connected to the tooth rack (30), and the lifting driving member (41) can drive the tooth rack (30) to lift to drive the feed dog (20) to perform reciprocating lifting movement with respect to the needle plate (10). The translational assembly (50) comprises a translational driving member (51), the translational driving member (51) is connected to the tooth rack (30), and the translational driving member (51) can drive the tooth rack (30) to translate to drive the feed dog (20) to perform reciprocating translational movement with respect to the needle plate (10). The lifting driving member (41) and the translational driving member (51) are connected to the controller, and the controller can control the operation of the lifting driving member (41) and the translational driving member (51). The controller of the feeding mechanism (100) of the sewing machine can coordinate the movement of the lifting assembly (40) and the translational assembly (50), so that diversified material sewing styles are provided. A sewing machine (200) comprising the feeding mechanism (100) of the sewing machine. The sewing machine (200) has diversified material feeding styles, and has a wide application prospect.

IPC Classes  ?

• D05B 27/02 - Work-feeding means for sewing machines with feed dogs having horizontal and vertical movements
• D05B 27/24 - Feed-dog lifting and lowering devices
• D05B 69/18 - Devices for changing speed or for reversing direction of rotation electric

Abstract

A sewing-starting and thread-cutting mechanism, comprising a thread-cutting fixed blade (100) that is fixedly provided, the edge (101) of the fixed blade being provided at an end of the thread-cutting fixed blade close to a needle (20) of a sewing machine; a thread-cutting movable blade (200), which is provided below the thread-cutting fixed blade; a thread-hooking groove (210) is provided on the top surface of the thread-cutting movable blade; the edge (201) of the movable blade is provided at an end of the thread-cutting movable blade close to the needle of the sewing machine; a driving part (300), which is connected to the thread-cutting movable blade. The driving part drives the thread-cutting movable blade to move along the length direction of the sewing machine between a thread-cutting position and a thread-hooking position; when the thread-cutting movable blade moves to the thread-cutting position, the edge of the fixed blade contacts the edge of the movable blade; and when the thread-cutting movable blade moves to the thread-hooking position, a thread-hooking hole of the thread-hooking groove moves below the needle of the sewing machine. Further comprised is a sewing-starting and thread-cutting method. The described mechanism can prevent bird nesting when starting sewing, reduce the process of trimming the ends of thread, and effectively reduce the probability of loose thread when starting sewing.

IPC Classes  ?

• D05B 65/06 - Devices for severing the needle or lower thread in sewing machines and for disposing of the severed thread end

Abstract

A sewing machine, comprising a main shaft (10), a feed dog frame (20), a feed dog (30) which is mounted on the feed dog frame (20), a feed mechanism (40) which is connected between the main shaft (10) and one end of the feed dog frame (20), a feed dog lifting mechanism (50) which is connected between the main shaft (10) and the other end of the feed dog frame (20), a presser foot (90), and a presser foot lifting mechanism (60) which is connected to the presser foot (90); the feed mechanism (40) comprises a stitch length seat (41) which is provided with a first fixed oscillating fulcrum (O1), and further comprises a driving source (110), a driving cam (120) which is driven to rotate by the driving source (110), a first transmission clutch mechanism (70), and a second transmission clutch mechanism (80); the first transmission clutch mechanism (70) acts between the driving cam (120) and the stitch length seat (41), and the second transmission clutch mechanism (80) acts between the driving cam (120), one presser foot lifting transmission component in the presser foot lifting mechanism (60), and one feed dog lifting transmission component in the feed dog lifting mechanism (50). By using one driving source, three functions of the sewing machine, i.e., adjusting stitch length, lifting a presser foot and automatically dropping a feed dog (30) during feeding, can each be controlled respectively, and the adjustment of stitch length also achieves forward sewing, backward sewing, and dense sewing by the sewing machine; in addition, costs are greatly reduced and less space is occupied.

IPC Classes  ?

• D05B 27/24 - Feed-dog lifting and lowering devices
• D05B 29/02 - Presser-control devices
• D05B 69/12 - Electrical or electromagnetic drives using rotary electric motors

Abstract

A sewing machine, comprising: a rotating main shaft (100), a material feeding eccentric wheel (200) sleeved on the main shaft (100), the material feeding eccentric wheel (200) comprising a cloth feeding eccentric part (201) engaged with a cloth feeding connecting rod (300), and a tooth lifting eccentric part (202) engaged with a tooth lifting connecting rod (400); a clutch mechanism connected to the material feeding eccentric wheel (200) and the main shaft (100), for locking the material feeding eccentric wheel (200) to the main shaft (100); adjusting the clutch mechanism can make the material feeding eccentric wheel (200) and the main shaft (100) separate from one another; when separated, the positioning angle between the material feeding eccentric wheel (200) and the main shaft (100) is changed by means of rotating the main shaft (100), thereby changing the rotation timing of the cloth feeding connecting rod (300) and the tooth lifting connecting rod (400) relative to the main shaft (100). The positioning angle between the main shaft (100) and the material feeding eccentric wheel (200) can be adjusted, different positioning angles corresponding to different timings of material feeding actions, being suitable for cloth of different thicknesses.

IPC Classes  ?

• D05B 27/00 - Work-feeding means for sewing machines

Abstract

Disclosed are a feeding device of a sewing machine, and a sewing machine. The feeding device comprises: a rotatable main shaft (3); and a feeding eccentric assembly, comprising a tooth-lifting eccentric cam (12, 16) fixed to the main shaft, and a feeding eccentric cam (5, 17) rotatably mounted on the main shaft, wherein a relative angle between the feeding eccentric cam and the tooth-lifting eccentric cam can be adjusted so as to realize the adjustment of a feeding trajectory. A position angle between the tooth-lifting eccentric cam and the feeding eccentric cam of the feeding device can be adjusted, and different position angles therebetween correspond to feeding trajectories in different forms, and are adapted to cloth of different thicknesses.

IPC Classes  ?

• D05B 27/00 - Work-feeding means for sewing machines

Goods & Services

Sewing machines; Stitching machines; Hemming machines; Machines for the textile industry; Rotary steam presses, portable, for fabrics; Pedal drives for sewing machines; Ironing machines; Cutting machines.

Goods & Services

Sewing machines; Ironing machines; Pedal drives for sewing machines; Machines for the textile industry; Stitching machines; Cloth cutting machines; Rotary steam presses, portable, for fabrics; Pressing machines; Buttonholing machines; Bonding machines; Cutting machines; Scissors, electric; Leather-working machines; Laundry folding machines; Engraving machines.