Abstract

Provided is a co-injection molding structure, mainly including a co-injection molding device and a molding die. The co-injection molding device includes a valve needle displaceable in a cylinder block. The valve needle is provided with a channel a first valve and a second valve. The channel communicates with a first feed tube and a second feed tube. The cylinder block communicates with a mold cavity of a molding die and the channel. When the valve needle is in a first position, the second valve will close the second feed tube such that a first material is injected into the mold cavity. When the valve needle is in a second position, the first valve will close the first feed tube such that a second material is injected into the mold cavity and covered by the first material, thereby filling an end of the mold cavity.

IPC Classes  ?

• B29C 45/23 - Feed stopping equipment
• B29C 45/18 - Feeding the material into the injection moulding apparatus
• B29C 45/34 - Moulds having venting means

Abstract

Provided is a mold with a variotherm mold temperature structure, including a based body, a heating device and an air control device. A mold cavity and a hot runner are provided inside the base body. The inside of the hot runner is filled with a working fluid, and the temperature and circulation of the working fluid are maintained by the heating device. A cold gas runner is provided between the hot runner and the mold cavity, and a plurality of brackets are arranged inside the cold gas runner. The air control device is communicated with one end of the cold gas runner, and can inject medium and low temperature gas from one end of the cold gas runner such that the medium and low temperature gas exchanges temperature with the base body.

IPC Classes  ?

• B29C 33/04 - Moulds or coresDetails thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process

Abstract

Provided is a mold core structure, which is arranged on a mold. The mold core structure includes a mold core body, which is a solid body made of three-dimensional printing, wherein one side of the mold core body is provided with a molding part, which is combined with an internal structure of the mold to form a cavity, there is a conformal air duct inside the mold core body, the conformal air duct has at least one main air duct and a plurality of secondary air ducts, the main air duct has a first end and a second end, the first end is located on one side of the mold core body, and connected to an external pneumatic control device, the pneumatic control device controls air to enter or exit the cavity through the conformal air duct, the second end thereof is located inside the mold core body, a path of the main air duct is freely wound around the molding part between the first end and the second end, one end of each of the secondary air ducts is communicated with the main air duct, and another end thereof is communicated with the molding part and disposed towards an ejection direction of a finished product. Accordingly, the finished product is released from the mold by controlling the air through the pneumatic control device.

IPC Classes  ?

• B29C 33/10 - Moulds or coresDetails thereof or accessories therefor with incorporated venting means
• B29C 33/04 - Moulds or coresDetails thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• B29C 45/34 - Moulds having venting means
• B33Y 80/00 - Products made by additive manufacturing

Abstract

Provided is a mold core structure, which is arranged on a mold. The mold core structure includes a mold core body, which is a solid body made of three-dimensional printing, wherein one side of the mold core body is provided with a molding part, which is combined with an internal structure of the mold to form a cavity, there is a conformal air duct inside the mold core body, the conformal air duct has at least one main air duct and a plurality of secondary air ducts, the main air duct has a first end and a second end, the first end is located on one side of the mold core body, and connected to an external pneumatic control device, the pneumatic control device controls air to enter or exit the cavity through the conformal air duct, the second end thereof is located inside the mold core body, a path of the main air duct is freely wound around the molding part between the first end and the second end, one end of each of the secondary air ducts is communicated with the main air duct, and another end thereof is communicated with the molding part and disposed towards an ejection direction of a finished product. Accordingly, the finished product is released from the mold by controlling the air through the pneumatic control device.

IPC Classes  ?

• B29C 45/34 - Moulds having venting means
• B29C 33/04 - Moulds or coresDetails thereof or accessories therefor with incorporated heating or cooling means using liquids, gas or steam
• B29C 33/10 - Moulds or coresDetails thereof or accessories therefor with incorporated venting means
• B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
• B33Y 80/00 - Products made by additive manufacturing

Abstract

Provided is a mold structure with a fast replacement of a mold core, including an upper mold base and a lower mold base corresponding to the upper mold base. The upper mold base is provided with at least one upper mold base, wherein the bottom of the upper mold base is provided with a push-pull device, the push-pull device includes a pressure cylinder and a push-pull rod capable of expansion and contraction and the upper mold core is driven by the expansion and contraction of the push-pull rod, and is relatively separated from or embedded in the upper mold base, and wherein the bottom of the upper mold core is provided with a chute, and the upper mold core is operatively coupled with or separated from the push-pull rod by the chute. Consequently, the action of replacing the mold core is performed.

IPC Classes  ?

• B29C 45/26 - Moulds

Abstract

Provided is an injection molding device, including an injection port arranged on an upper mold base; an upper mold arranged in the upper mold base, wherein at least one ejection port, a gasket groove and a gasket are provided and the ejection portion is connected to the injection port; a lower mold base operatively aligned with or separated from the upper mold base and provided with at least one gas passage for the gas to enter or exit; and a lower mold disposed on the lower mold base. The lower mold base is aligned with or separated from the upper mold base, the lower mold is provided with a mold cavity and at least one shaped air path is provided to connect the mold cavity with the gas passage. The lower mold is a porous material and has a plurality of pores. Gas is pre-injected into the mold cavity through the gas passage and at least one air path to maintain a preset pressure inside the mold cavity. Gas is spewed out through the plurality of pores, thereby causing a finished product to exit the mold cavity. In addition, the present disclosure also provides an injection molding method.

IPC Classes  ?

• B29C 44/42 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length using pressure difference, e.g. by injection or by vacuum
• B29C 44/58 - Moulds
• B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
• B29C 44/04 - Shaping by internal pressure generated in the material, e.g. swelling or foaming for articles of definite length, i.e. discrete articles consisting of at least two parts of chemically or physically different materials, e.g. having different densities
• B29L 31/50 - Footwear, e.g. shoes or parts thereof
• B29C 45/26 - Moulds
• B29C 45/00 - Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mouldApparatus therefor
• B29C 45/27 - Sprue channels
• B29C 45/34 - Moulds having venting means
• B29K 105/04 - Condition, form or state of moulded material cellular or porous