CN218838452U - Gas-assisted mold - Google Patents
Gas-assisted mold Download PDFInfo
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- CN218838452U CN218838452U CN202222725594.5U CN202222725594U CN218838452U CN 218838452 U CN218838452 U CN 218838452U CN 202222725594 U CN202222725594 U CN 202222725594U CN 218838452 U CN218838452 U CN 218838452U
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Abstract
The utility model discloses a mould is assisted to gas, include: the device comprises a template, a gas-assisted gas inlet, a gas-assisted gas outlet and a gas-assisted gas inlet, wherein the template is provided with a product forming cavity; the die holder is detachably connected with the template, a runner is arranged on the die holder, and the molten rubber can flow through the runner; the die holder is also provided with an overflow port valve needle, a glue inlet sprue, an overflow port and an overflow well; the valve needle of the flash port can control the opening and closing of the flash port; the glue inlet pouring gate is positioned at the tail end of the flow channel and communicated with the product forming cavity; the overflow port and the glue inlet gate are positioned on the same side of the product piece, and the gas auxiliary gas inlet is positioned on the other side of the product piece. The utility model provides a mould is assisted to gas carries out spilling over of sizing material in injection point position, even injection point and flash point coincidence, and then alleviates product appearance defect.
Description
Technical Field
The application relates to the technical field of injection molds, in particular to a gas-assisted mold.
Background
The injection mold is a tool for producing plastic products and also a tool for endowing the plastic products with complete structures and accurate dimensions, and the injection molding is a processing method used for batch production of parts with complex shapes, in particular to a method for injecting heated and melted plastics into a mold cavity from an injection molding machine at high pressure and obtaining a formed product after cooling and solidification.
The nitrogen-assisted molding is an assisted molding process in an injection molding process, and aims at large and complex products with uneven wall thickness, high-pressure nitrogen is filled in plastic through air holes during injection molding of a mold so as to extrude excessive plastic at a position with large wall thickness in the mold, and the product with proper wall thickness is obtained.
However, in the prior art, in the blowing stage of the production process, the glue in the product cavity is blown at the end of the injection point, and the glue overflows at the other end, which results in the injection point or the empty hole at both ends of the molded injection product.
SUMMERY OF THE UTILITY MODEL
Based on above-mentioned current situation, the utility model aims to provide a mould is assisted to gas carries out spilling over of sizing material in the injection point position, even injection point and the coincidence of flash point, and then alleviate product appearance defect even. And meanwhile, the production cost of the product is reduced.
The utility model adopts the following technical scheme:
a gas-assisted mold comprising:
the mold comprises a mold plate 1, wherein a product forming cavity 11 and an air auxiliary inlet 12 are arranged on the mold plate 1, and the air auxiliary inlet 12 is connected with an inert gas source and can blow inert gas into the product forming cavity 11;
the die holder 2 is detachably connected with the die plate 1, a runner 21 is arranged on the die holder 2, and molten rubber can flow through the runner 21;
the die holder 2 is also provided with a flash port valve needle 22, a glue inlet sprue 23, a flash port 24 and a flash well 25;
the valve needle 22 of the overflow port can control the opening and closing of the overflow port 24;
the glue inlet gate 23 is positioned at the tail end of the runner 21 and communicated with the product forming cavity 11;
the overflow port 24 and the glue inlet gate 23 are located at the same end of the product, and the gas-assisted inlet 12 is located at the other end of the product.
The overflow device further comprises an overflow ejector rod 26, wherein the overflow ejector rod 26 is provided with a top end, and the top end is positioned at the bottom of the overflow well 25 and can extend into the overflow well 25.
The inert gas is nitrogen.
The utility model has the advantages that:
1. the appearance defects of the product are reduced, and the production cost is reduced;
2. the yield of the product is improved;
3. and a process adjusting window is enlarged, and the process optimization space is improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a schematic structural view of the die holder of the present invention;
in the figure: 1-template, 11-product molding cavity, 12-gas auxiliary gas inlet, 2-mold base, 21-runner, 22-overflow port valve needle, 23-glue inlet sprue, 24-overflow port, 25-overflow well, 26-overflow ejector rod.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In this specification, the directional terms such as "upper", "lower", "left", "right", and the like are used for convenience of description, and are not restrictive.
The utility model discloses a gas-assisted mould, refer to fig. 1, including template 1, template 1 is equipped with product shaping cavity 11, gas-assisted air inlet 12 connects the inert gas source, can blow inert gas into product shaping cavity 11; the die holder 2 is detachably connected with the die plate 1, a runner 21 is arranged on the die holder 2, and molten rubber can flow through the runner 21; the die holder 2 is also provided with a flash port valve needle 22, a glue inlet gate 23, a flash port 24 and a flash well 25; the valve needle 22 of the flash port can control the opening and closing of the flash port 24; the glue inlet sprue 23 is positioned at the tail end of the runner 21 and communicated with the product forming cavity 11; the flash port 24 and the glue inlet gate 23 are located at the same end of the product piece, and the gas auxiliary inlet 12 is located at the other end of the product piece.
The overflow device further comprises an overflow ejector rod 26, wherein the overflow ejector rod 26 is provided with an ejection end, and the ejection end is positioned at the bottom of the overflow well 25 and can extend into the overflow well 25.
The inert gas is preferably nitrogen or other inert gas.
The method comprises the following specific implementation steps: when molten rubber material passes through the runner 21 and enters the mold product forming cavity 11 through the rubber inlet gate 23, after a certain volume is filled, the gate needle valve is closed, the flash port needle valve 22 is opened, and nitrogen gas is blown through the gas auxiliary gas inlet 12 at a certain pressure and speed, so that the molten rubber material is attached to the surface of the mold cavity. The flash port 24 and the glue inlet gate 23 are located at one end of the product piece, and the gas auxiliary inlet 12 is located at the other end of the product piece. And (3) after blowing, finishing overflowing, wherein an injection point on the product piece is superposed with the overflowing point, and redundant rubber materials overflow into the overflowing well 25 through the rubber inlet sprue and the runner to form an overflowing block.
To sum up, the utility model discloses a mould injects the sizing material at the injection end, and nitrogen gas is blown in to one end in addition, carries out spilling over of sizing material in the injection point position, even injection point and the coincidence of flash point, and then alleviates product appearance defect. And meanwhile, the production cost of the product is reduced.
The above description is only an example of the present invention, and the general knowledge of the known specific structures and characteristics in the schemes is not described herein too much, and it is easily understood by those skilled in the art that the protection scope of the present invention is obviously not limited to these specific embodiments. Without deviating from the present invention, a plurality of modifications and improvements can be made, which should be regarded as the protection scope of the present invention, and these will not affect the utility of the effect and the patent of the present invention.
Claims (3)
1. A gas-assisted mold, comprising:
the device comprises a template (1), wherein a product forming cavity (11) and an auxiliary gas inlet (12) are formed in the template (1), the auxiliary gas inlet (12) is connected with an inert gas source and can blow inert gas into the product forming cavity (11);
the die holder (2) is detachably connected with the die plate (1), a runner (21) is arranged on the die holder (2), and molten rubber can flow through the runner (21);
the die holder (2) is also provided with a flash port valve needle (22), a glue inlet gate (23), a flash port (24) and a flash well (25);
the overflow port valve needle (22) can control the opening and closing of the overflow port (24);
the glue inlet pouring gate (23) is positioned at the tail end of the flow channel (21) and is communicated with the product forming cavity (11);
the overflow port (24) and the glue inlet gate (23) are located at the same end of the product, and the gas auxiliary inlet (12) is located at the other end of the product.
2. The gas-assisted mold of claim 1, wherein: the overflow device is characterized by further comprising an overflow ejector rod (26), wherein the overflow ejector rod (26) is provided with a jacking end, and the jacking end is positioned at the bottom of the overflow well (25) and can extend into the overflow well (25).
3. The gas-assisted mold of claim 2, wherein: the inert gas is nitrogen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222725594.5U CN218838452U (en) | 2022-10-17 | 2022-10-17 | Gas-assisted mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222725594.5U CN218838452U (en) | 2022-10-17 | 2022-10-17 | Gas-assisted mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218838452U true CN218838452U (en) | 2023-04-11 |
Family
ID=87302674
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222725594.5U Active CN218838452U (en) | 2022-10-17 | 2022-10-17 | Gas-assisted mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218838452U (en) |
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2022
- 2022-10-17 CN CN202222725594.5U patent/CN218838452U/en active Active
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