The invention relates to a method for drying bulk materials (12), in particular solids, such as granulates, powders, grains, foils, shavings or the like, preferably for plastic-processing machines, in a single drying appliance (30) or multiple such appliances connected together to form an aggregate, and containers (10, 31), in particular material containers (10, 31). Depending on the material or bulk material (12) used, the drying time (45) specified by the producer or set by the user, in particular the residence time (45), is either sent by a superordinate control unit or by the user (2), or is set by the user in the control unit (19) of the container (10, 31) or of the drying appliance (30), or is present in the control unit (19) of the container (10, 31) or of the drying appliance (30) in the form of a local database, wherein the user (2) transmits, to the drying appliance(s) (30) and/or material container(s) (10, 31), the material consumption (43) or the shot weight per production cycle or the individual or cumulative shot weights for multiple production cycles or other values which make it possible to calculate the material consumption (43), this transmission being direct or indirect via the superordinate control unit, wherein each material container (10, 31) consists, on the control side, of multiple loading charges (48, 48a, 48b, 48c), preferably with time stamps (50a, 50b, 50c), and for the respective lowest loading charge (48, 48a, 48b, 48c), in particular a material charge, in the material container (10, 31) the drying time or residence time (45) is calculated as the difference between the current time of the respective material withdrawal by the user (2) and the time stamp (50a) belonging to the preferably oldest loading charge (48).
F26B 3/06 - Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
F26B 17/12 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity
F26B 17/14 - Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity the materials moving through a counter-current of gas
F26B 21/06 - Controlling, e.g. regulating, parameters of gas supply
F26B 25/00 - Details of general application not covered by group or
2.
METHOD FOR DISPLAYING AND OPERATING PRODUCTION MEANS, IN PARTICULAR FOR THE PLASTICS PROCESSING INDUSTRY
The invention relates to a method for displaying and operating production means (2), in particular for the plastics processing industry, on one or more central operating units (30), preferably a computer or control station. At the central operating unit (30), symbols (33) for the production means (2) connected by means of a network (29) or for the management tools (34), such as configuration systems (35) or database systems (36), related to the production means (2) are provided and can be selected. After the selection of one or more symbols (33) on the screen (32) of the operating unit (30), the visualization, in particular the visualization component (101) from the associated production means (2) or management tool (34), is started or carried out at the operating unit (30). Subsequently, complete display and operation are possible by means of the interaction of the visualization software (31) provided at the operating unit (30) and control software (37) running decentralised in the production means (2).
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
The invention relates to a segmented-wheel dryer (1) for drying bulk material, in particular solids such as granular materials, powders, grains, foils, chips or the like, preferably plastics granular material, which dryer has a rotatable drum (2) which consists of radially arranged cells (3) and is closed by means of a lid air-distributor hood (4) and a base air-distributor hood (5). Connection pieces (31, 32) are provided on the lid air-distributor hood (4) and the base air-distributor hood (5), for example for connection to a supply-air flow and an exhaust-air flow. In order to produce the rotational movement of the drum (2), said drum is connected to a drive unit. The lid air-distributor hood (4) and the base air-distributor hood (5) are connected, without the weight load of the drum (2), to the rotatable drum (2) in an air-tight manner by means of sealing elements (17, 18), both the lid air-distributor hood (4) and the base air-distributor hood (5) being coupled to the drum (2) by means of one or more adjustable compressive-force adjustment devices (19) for adjusting a defined contact pressure of the lid air-distributor hood (4) and the base air-distributor hood (5).
F26B 21/04 - Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
B01D 53/06 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents
METHOD FOR THE QUALITY CONTROL AND/OR TRACKING OF AN INJECTION MOLDED PART PRODUCED IN A PRODUCTION CYCLE, AND PLASTIC INDUSTRIAL FACILITY FOR THIS PURPOSE
The invention relates to a method for the quality control and/or tracking of an injection molded part (3) produced in a production cycle using preferably at least one processing machine (4) of the plastic processing industry and a plastic processing facility, in which production means or devices (31) or stations (31) arranged upstream or downstream are connected together preferably via a network (49). Each individual injection molded part (3) or a specified number (charge 65) of injection molded parts (3) is assigned a quality value (33) composed of multiple quality values (33a to 331) in that each device (31) or station (31) in the production chain ascertains or generates its own quality value (33a to 331) and extends same by the transmitted quality values (33a to 331) of each previous device (31) or previous station (31) and forwards same as the new quality value (33, 33a to 331) to the following device (31) or following station (31) or in that a separate collecting station (48), in particular a hardware and software (COQ - chain of quality), requests the quality values (33, 33a to 331), in particular the device values (32) and/or material values (50) thereof, from the individual devices (31) or stations (31) or is transmitted thereto, and the collecting station (48) puts said values into correlation.
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
The invention describes a method for continuously storing internal operating states (20) and for visualising past process sequences, and also a robot (5) and/or robot controller (17), wherein the robot (5) is preferably mounted on or next to a processing machine, in particular an injection-moulding machine (4), and serves for removing, handling, manipulating or further processing injection-moulding parts (3) which have just been produced. The robot controller (17) records data (20), in particular changes in state, positions, internal parameters, time stamps etc., and, if an error (24) occurs, these items of information recorded last are linked with the error (24) and saved, as a result of which the changes in state up until the respective error (24) occurred are adjusted and visually displayed for analysis using a virtual model (21) of the physical robot.
The invention describes a flow controller (20) for a processing device, in particular an injection-moulding machine (4), comprising at least one housing (23) for receiving a number of exchangeable measuring tubes (27) with in each case an assigned flow and temperature sensor (28), wherein each measuring tube (27) is assigned a process feed (24) and a process return (25) and the latter are connected to a collective feed (30) and a collective return (31). One or more connections (26) of the process feeds (24) and process returns (25) is/are arranged on the same side or side wall (32) by the fastening devices (33) of the flow controller (20) for fastening to a bulkhead plate (21) of the processing machine, in particular the injection-moulding machine (4). In addition, the invention comprises a flow meter (20) with a display (36) on a front side (35) of the housing (23).
B29C 35/00 - Heating, cooling or curing, e.g. crosslinking or vulcanisingApparatus therefor
G01F 15/00 - Details of, or accessories for, apparatus of groups insofar as such details or appliances are not adapted to particular types of such apparatus
7.
TEMPERATURE CONTROL DEVICE AND METHOD FOR THE OPEN-LOOP AND CLOSED-LOOP CONTROL OF A TEMPERATURE CONTROL DEVICE FOR A PROCESSING DEVICE, IN PARTICULAR AN INJECTION MOLDING MACHINE
The invention describes a method and a temperature control device (12, 54) for a processing device, in particular an injection molding machine (4), the temperature control device comprising: at least one conveying pump (23) for conveying a medium; a heat exchanger (24, 55, 56); an electric heater (25); a controller (22) for closed-loop and open-loop control; and preferably a housing (20), in which the components are arranged, characterized in that a heating circuit (29) and a cooling circuit (30) are connected to the same heat exchanger (24, 55, 56), but only one circuit is activated at a time, the heat exchanger (24, 55, 56) and/or the electric heater (25) and a process medium (32) flowing through being arranged in a pressure vessel (31). The invention further relates to a method and a temperature control device, in which the controller (22) is designed in such a way that the amount of heat and the amount of cold that can be supplied or removed by means of at least one heat exchanger (24, 55, 56) are determined and/or clogging or calcification of at least one heat exchanger is determined.
B29C 35/00 - Heating, cooling or curing, e.g. crosslinking or vulcanisingApparatus therefor
F28F 27/00 - Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
F28D 7/00 - Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
METHOD FOR VALIDATING PROGRAMMED EXECUTION SEQUENCES OR TEACHING PROGRAMS FOR A ROBOT IN A WORKING CELL, AND ROBOT AND/OR ROBOT CONTROLLER FOR SAID METHOD
The invention relates to a robot (5) and/or a robot controller (17) and to a method for validating programmed execution sequences or teaching programs (20) for a robot (5) preferably using a robot controller (17). The robot (5) is preferably mounted on or next to a processing machine, in particular an injection molding machine (4), and is used to remove, handle, manipulate, or further process injection molded parts (3) which have just been produced. The movement parameters, equipment features, and functionalities of the physical robot (5) are stored in a configuration file (27) on the controller side. The robot controller (17) generates a virtual robot model (21) from said stored data, and the robot controller (17) accesses the current teaching program (20) in the robot controller (17) in order to validate an execution sequence, wherein the visualization of the execution sequence is displayed directly on an output unit of the robot controller (17).
METHOD FOR VALIDATING PROGRAMMED EXECUTION SEQUENCES OR TEACHING PROGRAMS FOR A ROBOT IN A WORKING CELL, AND ROBOT AND/OR ROBOT CONTROLLER FOR SAID METHOD
The invention relates to a method and a robot (5) and/or a robot controller (17) for validating programmed execution sequences and/or teaching programs (20) for the robot (5) in a working cell (2). The robot (5) is preferably mounted on or next to a processing machine, in particular an injection molding machine (4), and is used to remove, handle, manipulate, or further process injection molded parts (3) which have just been produced. The robot controller (17) is designed to reproduce a virtual twin or robot model (21), in particular a virtual representation of the system or working cell (2), at an output point, in particular a display or touchscreen (16), wherein at least the injection molding machine is represented as part of the working cell as well as additional production means of the system or working cell (2), which are preferably detected and represented automatically.
The invention relates to a method for viewing and selecting production means, in particular peripheral devices, for the injection molding industry. The production means are organized in order to produce an injection molded part (20) in at least one working cell (2 to 4) and are connected together via a network (19, 22). A memory request (27) with respect to all of the connected production means (5) is queried manually on a controller, in particular a working cell controller (16 to 18), or on a production means (5), in particular a processing machine (6), and defined data, such as the respective settings (29) for example, and program sequences, recipes, and other configurations, are read from the memory requests and are connected together with the internal settings (29), in particular of the processing machine (5), in order to form a tool data set (30) for the injection molded part (20). A list (31) of the required production means (5) for the injection molded part (20) which can be produced on the processing machine (6) can be generated automatically at any time from the tool data set (30) and can be displayed at an output point (32), preferably of the processing machine (6).
The invention relates to an apparatus (1) for feeding single grains to one or more processing machines, in particular to an injection molding machine (2), comprising at least a singulating device, a granular material reservoir (20) for a bulk material (21) preferably of plastic granular material (21) or plastic pellets (21) or plastic grains (21), and a feeding device for feeding the singulated bulk material (21) to the injection molding machine (2). The singulating device is formed from a singulating disk (3), the singulating disk (3) being provided with suction openings (5) distributed over a pitch circle. On one side of the singulating disk (3), the granular material reservoir (20) is arranged in order to hold bulk material (21). By means of the shaft (6), the singulating disk (3) is mounted for rotation with the suction openings (5) for receiving and dispensing grains. Furthermore, a grain scraper (25) and/or a grain orienting means (26) for the bulk material or grains (21) is arranged on the singulating disk (3) in order to scrape off the grains (21) and/or orient the grains (21), or on the singulating disk (3) for receiving the bulk material or on the shaft (6) a stirring or carry-along element (36) is arranged.
The invention relates to an industrial facility or production facility and to a method for administering and controlling production means (5) with at least one working cell (2 to 4). Certain production means (5) are organised in working cells (2 to 4) which are respectively formed from preferably at least one processing machine (6) of the plastic-processing industry (1) and at least one peripheral appliance (7). The production means (5) are connected to a working cell control system (16, 27, 28), the production means (5) being automatically recognised by the working cell control system (16, 27, 28), whereupon the working cell control system (16, 27, 28) carries out the communication or the data exchange (15) on one hand with the preferably operationally internal network (19), particularly an Intranet and/or an Internet, and on the other hand with the production means (5) of the working cell (2 to 4), generating direct communication between the production means (5). A software update can be carried out during the operation of the working cells (2 to 4) in the operating cell control system (16, 27, 28). The working cell control system (16, 27, 28) also draws up a list (25) and allocates adresses (25) for the connected production means (5).
G05B 19/042 - Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
G05B 19/418 - Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
The invention relates to a device on a robot (4) of an injection molding machine, the robot (4) comprising an automatic manipulator which is equipped with a programmable control and adjusting unit, arms (5, 6) and a preferably pivotable removal gripper (7). The injection molding machine has a working space, in particular a mold opening space (3) for removing injection-molded articles. At least one individually adjustable distance-measuring device (9), which is designed to define and/or establish the collision-free working space, is located on the automatic manipulator, in particular on an arm (5, 6) and/or on the removal gripper (7). During operation of the injection molding machine, said distance-measuring device (9) is used for monitoring the collision-free working space for the automatic manipulator, in particular in the mold opening space (3). The distance-measuring device (9) is used for measuring the distance between the automatic manipulator and/or the removal gripper (7) and structural obstacles such as beams (1) and/or protective casings.
The invention relates to a device for transfer and/or handling and transport of workpieces (5), in particular for removing injection-molded articles from an injection molding machine, wherein an automatic manipulator (4), which is provided with a programmable control and regulating unit (10), comprises a gripper (6) having at least a suction nozzle (7) for grasping and sucking up the workpiece (5). A distance measuring device (8) for detecting the distance (a1+a2) from the gripper (6) to a reference point or a reference surface (9), for example for the, preferably movable, tool half (2) with the workpiece (5), is arranged in the gripper (6) of the automatic manipulator (4). The measured value of the distance measuring device (8) is fed to the control and regulating unit (10). The distance measuring device (8) can be a light propagation time measuring device, in particular a Time-of-Flight (TOF) sensor.
A device for dosing bulk material, in particular plastic granules, for machines that process plastic granules, in particular for injection moulding machines. The invention provides a bulk material feed (1), a material hopper (3) formed by multiple, preferably four, individually removable material hopper containers (2) and arranged under the bulk material feed (1) and ending in a dosing base device (4), and, optionally, a weighing container with a scale in the dosing base device (4). The individual material hopper containers (2) are arranged on a support spider (5) and the support spider (5) is formed by support spider plates (11) arranged vertically and perpendicular to one another. The support spider is mounted on the housing of the dosing base device (4). The support spider (5) has a height (h), which is at least the height (h1) of the material hopper container (2), which extends over the dosing base device (4), and corresponds to the immersion depth (h2) of the material hopper (3) into the dosing base device (4). A material hopper cover (6) is provided on the end of the support spider (5) facing away from the dosing base device (4).
G01G 19/24 - Weighing apparatus or methods adapted for special purposes not provided for in groups for apportioning materials by weighing prior to mixing them using a single weighing apparatus
The invention relates to a method for drying bulk material, in particular solids, such as granulates, powder, grains, foils, chips, or the like, preferably plastic granulate, in a drying silo (7) by means of an air flow. The moistened returned air or the process air flow (10) that emerges from the drying silo (7) is dried in a drying cell containing a drying or adsorbent agent and returned in the form of a drying air flow (12) to the bulk goods again. The drying cell is preferably a wheel dryer (11) consisting of an air distribution cover and an air distribution floor having a rotatable drum arranged therebetween. The adsorbent agent is furthermore regenerated in the wheel dryer (11). The drum of the wheel dryer (11) is divided by the air distribution cover and the air distribution floor into two regions through which air is able to flow. One region (5) is used to regenerate the adsorbent agent and the other region (6) is used for drying or dehumidifying the process air flow (10). The region (6) for drying or dehumidifying the process air flow (10) adjoins the region (5) for regenerating the adsorbent agent, wherein the hot adsorbent agent is introduced uncooled into the region (6) for drying or dehumidifying the process air flow (10).
B01D 53/06 - Separation of gases or vapoursRecovering vapours of volatile solvents from gasesChemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols by adsorption, e.g. preparative gas chromatography with moving adsorbents
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
17.
DEVICE FOR COMMINUTING NON-METALLIC GRINDING STOCK
The invention relates to a device for comminuting non-metallic grinding stock (1), particularly a toothed roll crusher, for producing bulk grinding stock, preferably plastic granulate (5) for injection moulding machines. At least one toothed roll (8) is provided in a comminuting chamber (7) which roll has one or a plurality of sawtooth-like cutting plates (4) arranged radially at a distance from one another. The cutting plates (4) interact with a comb (3) to comminute the grinding stock (1). The comb (3) is electrically isolated against the comminuting chamber (7), particularly the casing of the (6) comminuting chamber (7) and its fittings where necessary, and an electrical potential, in the form of an electrical voltage is applied to the comb (3). The toothed roll (8) comprising the cutting plates (4) and the comminuting chamber (7) have an electrical potential, preferably ground potential, different to the electrical potential of the comb (3). The two electrical potentials are connected by an electric circuit, wherein the circuit (15) switches off the motor for the toothed roll (8) when the two electrical potentials short circuit.
B02C 18/16 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like with rotating knives Details
B02C 18/14 - Disintegrating by knives or other cutting or tearing members which chop material into fragmentsMincing machines or similar apparatus using worms or the like with rotating knives within horizontal containers
18.
DEVICE FOR METERING BULK MATERIAL, IN PARTICULAR PLASTICS GRANULATE
The invention relates to a device for metering in particular plastics granulate for machines processing plastics granulate, in particular for injection moulding machines, wherein at least one material funnel (2) into which bulk material can be filled and which has a material valve is provided. A weighing container (4) connected to weighing scales is optionally arranged below the material valve. A control unit is provided for the weighing scales and material valve. The material valve is designed as a metering valve (3), in particular as a flap-type metering valve, and consists of a part (closure (7)) movable via a horizontal axis (6) and a fixed part (scraper (8)). The movable part has an operating arm (9) for an actuator (5) and at the end facing towards the fixed part has a closure plate (10) having a scraper projection (11). In the closed state of the metering valve (3) the scraper projection (11) touches the scraper (8).
The invention relates to a method and a device for dosing bulk material, in particular plastic granulate, for machines machining plastic granulate, in particular for injection moulding machines. According to the invention, different amounts of different plastic granulates are introduced in batches according to freely adjustable formulations and each type of plastic granulate, such as for example new material, main batch, additives and/or material to be ground, are successively passed through a material funnel (2) to a weighing container via a material valve. The product is weighed in the weighting container (4) and the formulation is subsequently mixed in a mixer. The amount of plastic granulate, preferably new material and/or material to be ground, which is more than the formulation is introduced in parallel or multi-parallel from at least two material funnels (2) in the weighing container (4).
The invention relates to a method for handling and transporting workpieces (5), in particular for removing injection-moulded articles from an injection-moulding machine. Handling is carried out with a handling machine (4) which has a programmable control and regulating unit and at least one suction nozzle (7). In order to grasp or suck up the workpiece (5), use is made of a negative pressure (-p) generated via the suction nozzle (7) arranged on the handling machine (4), if appropriate via a gripper (6). When the suction nozzle (7) approaches the workpiece (5), the suction nozzle (7) is activated. The negative pressure (-p) is measured continuously or permanently. When a settable or determined threshold value of the negative pressure (-p) is reached, the forward movement of the handling machine (4) is stopped, preferably by a braking operation. The workpiece (5) is sucked up carefully and precisely by the suction nozzle (7).
The invention relates to a method for removing injection-molded items from an injection-molding machine by means of a robot. The injection-molding machine and the robot are each provided with a separate drive, and each drive can be acted on by a separate open- and closed-loop control unit that can be programmed separately. The injection-molding machine is equipped with at least one signaling device for detecting a position of the mold. The signal (S1, S2, S3) of the signaling device is applied to the open- and closed-loop control unit of the robot, said open- and closed-loop control unit containing a computing element. The motion sequence (b) of the robot specified by means of the open- and closed-loop control unit is recalculated after each removal cycle according to the edge, preferably the negative edge, of said signal (S1). The robot is moved from the start position of the robot for the next removal cycle by means of a timer, which is based on the recalculated start time (st).
The invention relates to a method for drying bulk material, in particular solids, such as granulates, powder, grains, foils, chips, or the like, preferably plastic granulate, in a drying silo (9) by means of an air flow. The exhaust air flow (5) that is discharged from the drying silo (9) is dried in a wheel dryer (1). The adsorbent is regenerated and cooled in the wheel dryer. A rotatable drum (2) of the wheel dryer (1) is divided into at least three wheel segments, wherein the region of a wheel segment is used for drying or dehumidifying the exhaust air flow, the region of the second wheel segment is used for heating the adsorbent, and the region of the third wheel segment is used for cooling the adsorbent. The drying or dehumidifying phase (14) for the exhaust air flow (5) and preferably the adsorbent cooling occur in parallel, in particular in a continuous manner during the operation. The regenerating phase (15) with the adsorbent heating is carried out at intervals during the operation. The drum (2) of the wheel dryer is stopped in the cooling (16) or regenerating phase (15) and advanced to a selectable region, preferably the cooling region, after the cooling (16) or regenerating phase (15) finishes.
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
The invention relates to a device for drying bulk goods, in particular solids, such as granular materials, powders, grains, films, shreds, or the like, preferably plastic granular material. In order to dry the exhaust air flow (5) exiting the drying silo (9), the drying silo (9), through which an air flow flows, is connected by means of a process fan (11) to a wheel drier (1) that contains a drying or adsorbing agent and that has a rotatable drum (2) having radial cells (21). The individual cells (21) of the drum (2) of the wheel drier (1) are formed by plates, wherein clamping plates (24) of a cell (21) lying against the radial outer (22) and inner (23) jackets of the drum (2) have a U-shaped cross-section and are arranged axially on the inner wall. The legs (25) of the U-shaped clamping plates (24) are tilted outwardly. Separating plates (26) are provided as partitions of the individual cells (21). The separating plates are positioned by the clamping effect of adjacent legs (25) of two U-shaped clamping plates (24) lying against each other and seal off the cells from each other.
F24F 3/14 - Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by humidificationAir-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatmentApparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by dehumidification
The invention relates to a device for drying bulk material, in particular plastic granulate for machines that process plastic granulate. A drying silo (12) is provided for drying the plastic granulate with a dried gaseous medium, in particular air, which flows through the drying silo (12). A dry air generator (20) with a downstream process heating (11) is arranged for generating the dried gaseous medium flow. The returning air exiting the drying silo (12) can be fed to a process fan (26) and to the dry air generator (20) via a returning air line (28). The process fan (26) is controlled by a frequency converter (14) for controlling the rotational speed, said frequency converter comprising a controller. At least one measuring device (29), for example for temperature, flow rate, or pressure, is provided in the returning air line (28), and the measured value of said measuring device is fed to the controller and used as a control variable by the frequency converter (14).
The invention relates to a temperature-controllable mold tool, preferably made of metal, having a shaping contact surface (4). The mold tool has at least one temperature-control cavity integrated into the tool. Arranged inside the temperature-control cavity (6) is a support structure (S) for supporting the rear side (7) of a tool wall (3) that forms the shaping contact surface (4) against an abutment (8), the support structure having a hollow space and filling the temperature-control cavity (6). The hollow space formed by the support structure (S) is intended to accommodate a temperature-control medium.
The invention relates to a method for automatically loading a feed line (4) with bulk material (2), in particular a plastic granular material, in a suction delivery system having at least one material separator, which is provided at a distance to a reservoir (1). For the area of the loading point, at least one target value for the air speed is empirically determined from feed line parameters related to the feed line (4) and from material parameters related to the bulk material (2). In the area of the loading point, the air speed is measured in the feed line (4). The target value and the measured value of the air speed are fed to a controller. When the target value is reached, bulk material (2) is added in a metered manner, wherein the bulk material (2) is added in a metered manner according to the measured value of the air speed, for example continuously or in cycles. An orifice (6) having a pressure switch (7) for measuring the air speed is provided in the area of the loading device (3), and the loading device (3) is designed as a metering apparatus.
B65G 53/66 - Use of indicator or control devices, e.g. for controlling gas pressure, for controlling proportions of material and gas, for indicating or preventing jamming of material
The invention relates to a method for determining the filling time for filling at least one material separator (1) provided with a fill level sensor (12) and a requirement sensor (11) in delivery systems made of at least one reservoir (4). In the beginning, with empty lines (3, 6) and an empty material separator (1), the bulk material is delivered out of the reservoir (4) from the time the requirement sensor (11) is triggered until the fill level sensor (12) is triggered, and said delivery time (T REF1) is measured and stored. If the requirement sensor (11) is triggered again, the delivery is carried out again until the fill level sensor (12) is trigged, and said delivery time (T REF2), which corresponds to the delivery time for filling the material separator (1), is measured and stored, wherein bulk material is present in the lines (3, 6) from the first delivery. The delivery time (T REF2) is subtracted from the delivery time (T REF1) in order to determine the emptying time (T LEER), which is equal to the intake time. The lines (3, 6) are emptied within the calculated emptying time (T LEER). If the requirement sensor (11) is activated again, the material separator (1) is triggered with the delivery time (T REF2) and emptied with the emptying time (T LEER), which both represent the filling time when added together.
G01F 23/00 - Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
The invention relates to a material separator for delivery systems, particularly for machines processing plastic granules. A receptacle (1) provided with a cover hood or a lid (2) comprises a laterally disposed material supply connection (3) and a laterally disposed suction connection (4) provided above the same, and preferably a closing device (5) disposed at the lower end of the receptacle (1). On the inside of the receptacle (1), a screen (11) extending across the cross-section of the receptacle (1) is provided between the material supply connection (3) and the suction connection (4). The receptacle (1), or the upper receptacle edge (9), is tapered on the cover hood side, or the lid side, in accordance with a flat cut. The screen (11) extends from the region between the material supply connection (3) and the suction connection (4) on the inside of the receptacle toward the lid (2) into the region of the upper receptacle edge (9) and is preferably bent in a rooflike manner. The screen (11) is connected to the lid (2).
The invention relates to a method and an apparatus for drying pourable material in a drying silo (1) by means of an air flow. The used air flow (5) that is discharged from the drying silo (1) or the returning air is dried in a drying cell (6) containing a drying agent or adsorbent and is fed to the pourable material as a dry air flow (3). If necessary, the adsorbent is regenerated in the drying cell (6). The used air flow (5) is fed to a supply duct that is disposed in the drying cell (6) and is connected to the adsorbent, is deflected in the drying cell (6), is conducted across the adsorbent, is then deflected once again as a dry air flow (3), is withdrawn in a discharge duct against the direction of flow in the supply duct, and is fed to the drying silo (1). The drying cell (6) that is designed as a wheel-type drier is rotated in stages or continuously. The drying cell (6) is designed as a drum comprising at least three concentric, axially extending zones (20, 21, 22). The adsorbent is located in the central zone (20), while the two other, external and internal zones (21, 22) are designed as ducts for the used air flow (5) or the dry air flow (3). The ducts are connected to the zone (20) containing the adsorbent in order to allow air to penetrate therebetween.
