CN215039855U - Gas-assisted injection molding structure of automotive interior trim part - Google Patents
Gas-assisted injection molding structure of automotive interior trim part Download PDFInfo
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- CN215039855U CN215039855U CN202122437420.4U CN202122437420U CN215039855U CN 215039855 U CN215039855 U CN 215039855U CN 202122437420 U CN202122437420 U CN 202122437420U CN 215039855 U CN215039855 U CN 215039855U
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- air inlet
- gas
- automotive interior
- die cavity
- assisted
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- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection moulding structure is assisted to automotive interior spare's gas, include: the mold cavity is used for forming the automotive upholstery body in an air-assisted mode, an air inlet is formed in the top of one end of the mold cavity, an air faucet is aligned with the air inlet, and an inclined top is arranged between the outside of the position of the air inlet of the mold cavity and a mold; the utility model discloses an increase oblique top on the mould of air inlet position, change traditional right angle die cavity, form the cavity region between the structure of realization shaping back air inlet position department and the product outer wall, even produce the shrinkage mark at air inlet corner, do not influence product outer wall appearance quality yet.
Description
Technical Field
The utility model relates to a forming die technical field is assisted to gas, especially relates to an injection moulding structure is assisted to automotive interior spare's gas.
Background
The gas-assisted injection molding is an extension of injection molding and has the following principle: the injection molding machine injects the plastic melt into the mold cavity, the high-pressure compressor and the control instrument inject the high-pressure nitrogen into the mold cavity through the air tap, the gas diffuses and advances along the direction with the minimum resistance under the surrounding of the plastic melt, the plastic melt is emptied by penetrating, the injection molding melt is full of the mold cavity as power pushing, finally the gas is discharged, and after cooling, the inside of a product forms a hollow cavity. Wherein, the shape and size of the cavity air channel can influence the penetration of gas and the interference of the gas to the melt flow, and finally influence the quality of the formed product.
Fig. 1 shows a die cavity structure for forming automotive interior parts in the prior art, a right-side lower corner of the die cavity is a right angle, gas blown out from a gas nozzle moves in a gas passage of the die cavity in a direction shown by an arrow in fig. 1, the gas has insufficient penetrating power to plastic melt at the corner, the plastic melt is locally accumulated, local forming at the corner is inconsistent with the thickness of the peripheral wall, the cooling speed and the shrinkage rate are not uniform, and the outer surface of the local structure (the arrow in fig. 2) has the defects of shrinkage marks, bright marks and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the prior art, the utility model aims to provide an air-assisted injection molding structure of automotive interior spare.
In order to achieve the above purpose, the utility model is realized by the following technical scheme:
an air-assisted injection molding structure of an automotive interior part, comprising: a die cavity for gas-assisted shaping automotive interior spare body, the air inlet has been seted up at the one end top of die cavity, and the air cock is aimed at the air inlet, be provided with oblique top between the outside of the air inlet position of die cavity and the mould, oblique top with contained angle between the air inlet position corner of die cavity is the obtuse angle, the oblique ejector pin of oblique top is installed on the ejection mechanism of mould.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses an increase oblique top on the mould of air inlet position, change traditional right angle die cavity, form the cavity region between the structure of realization shaping back air inlet position department and the product outer wall, even produce the shrinkage mark at air inlet corner, do not influence product outer wall appearance quality yet.
Drawings
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic partial structure of a prior art product;
FIG. 3 is a schematic structural view of the present invention;
fig. 4 is a schematic perspective view of the present invention;
fig. 5 is a schematic view of a partial structure of the product of the present invention.
In the figure: 1-a body of an automotive upholstery; 11-a hollow region; 2-a cavity; 21-an air inlet; 3-air tap; 4-inclined top.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and more obvious, the present invention is further described in detail below with reference to the accompanying drawings and embodiments.
As shown in fig. 3 to 5, the utility model provides an automotive interior spare's gas-assisted injection moulding structure, include: a die cavity 2 for gas-assisted shaping automotive interior spare body 1, air inlet 21 has been seted up at the one end top of die cavity 2, and air cock 3 aims at air inlet 21, be provided with between the outside of the air inlet 21 position of die cavity 2 and the mould and push up 4 to one side. The included angle between the inclined top 4 and the corner of the air inlet 21 of the cavity 2 is an obtuse angle, and an inclined ejector rod of the inclined top 4 is installed on an ejection mechanism of the mold. Through setting up the pentroof 4, change the die cavity shape in air inlet 21 position, after the shaping, form hollow region 11 between the structure in air inlet 21 position department and the product outer wall, even produce the sink mark in air inlet 21 corner, do not influence product outer wall appearance quality yet.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. The utility model provides an injection moulding structure is assisted to automotive interior spare's gas which characterized in that includes: a die cavity (2) for gas-assisted shaping automotive interior spare body (1), air inlet (21) have been seted up at the one end top of die cavity (2), and air cock (3) are aimed at air inlet (21), be provided with between the outside of air inlet (21) position of die cavity (2) and the mould and push up (4) to one side, push up (4) to one side with contained angle between air inlet (21) position corner of die cavity (2) is the obtuse angle, the oblique ejector pin of pushing up (4) to one side is installed on the ejection mechanism of mould.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122437420.4U CN215039855U (en) | 2021-10-11 | 2021-10-11 | Gas-assisted injection molding structure of automotive interior trim part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122437420.4U CN215039855U (en) | 2021-10-11 | 2021-10-11 | Gas-assisted injection molding structure of automotive interior trim part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215039855U true CN215039855U (en) | 2021-12-07 |
Family
ID=79218289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122437420.4U Active CN215039855U (en) | 2021-10-11 | 2021-10-11 | Gas-assisted injection molding structure of automotive interior trim part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215039855U (en) |
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2021
- 2021-10-11 CN CN202122437420.4U patent/CN215039855U/en active Active
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