CN213797876U - Vacuum exhaust device for automobile injection mold cavity - Google Patents
Vacuum exhaust device for automobile injection mold cavity Download PDFInfo
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- CN213797876U CN213797876U CN202022176591.1U CN202022176591U CN213797876U CN 213797876 U CN213797876 U CN 213797876U CN 202022176591 U CN202022176591 U CN 202022176591U CN 213797876 U CN213797876 U CN 213797876U
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- 238000002347 injection Methods 0.000 title claims abstract description 21
- 239000007924 injection Substances 0.000 title claims abstract description 21
- 210000001503 joint Anatomy 0.000 claims abstract description 14
- 238000000465 moulding Methods 0.000 claims abstract description 8
- 238000001746 injection moulding Methods 0.000 abstract description 15
- 238000013461 design Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The utility model discloses a vacuum exhaust device for a cavity of an automobile injection mold, which comprises a fixed mold part structure at the lower end and a movable mold part structure arranged above the fixed mold part structure in a butt joint manner at the upper end; the fixed die part structure comprises a horizontal fixed die plate at the upper end, the movable die part structure comprises a movable die plate at the lower end, the movable die plate is attached to and butted on the fixed die plate, and an upper die cavity and a lower die cavity are respectively formed on a group of opposite surfaces of the fixed die plate and the movable die plate; an upper molding cavity and a lower molding cavity which are arranged in pairs are respectively formed on the upper die cavity and the lower die cavity; the edges of the upper die cavity and the lower die cavity are respectively concave inwards to form an upper exhaust groove and a lower exhaust groove which are annular as a whole; vertical upper vent holes and vertical lower vent holes are respectively arranged at the edges of the upper die cavity and the lower die cavity, and the upper vent holes and the lower vent holes are respectively communicated with the upper vent grooves and the lower vent grooves. The utility model has the advantages of the stranded gas appears in avoiding the mould die cavity that can be better, can accomplish work piece injection moulding better.
Description
Technical Field
The utility model belongs to the technical field of injection mold, concretely relates to car injection mold die cavity vacuum exhaust apparatus.
Background
Most of automotive interior parts are plastic components, and are usually obtained by injection molding in processing and manufacturing. When the plastic part is prepared by adopting the injection mold, due to the process reason of plastic injection, in the injection molding process, solid plastic is heated by the injection molding machine and is in a fluid state, then enters from a sprue of the injection mold and enters into a mold cavity through a main runner of the injection mold, the fluid plastic enters into the mold cavity and fills the mold cavity to form the shape of a workpiece, and simultaneously, the fluid plastic is compressed and discharged out of the mold cavity along with air in the mold cavity. In the process, the tail end of the product is easily burnt, the gas in the cavity cannot be completely discharged, and the gas trapping phenomenon exists. The problem of air trapping is solved by adding an air exhaust groove on a mould. However, the structure of the exhaust groove is increased, exhaust is easy to block, repeated cleaning is needed, inconvenience in use is caused, and injection molding cost is increased.
Therefore, how to provide the automobile injection mold cavity vacuum exhaust device which has a simple structure, can better avoid air trapping in the mold cavity and can better complete injection molding of a workpiece becomes a technical problem to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
To the not enough of above-mentioned prior art, the utility model aims to solve the technical problem that: how to provide a simple structure, the trapping of gas appears in avoiding the mould die cavity that can be better, can accomplish work piece injection moulding's car injection mold die cavity vacuum exhaust apparatus better.
In order to solve the technical problem, the utility model discloses a following technical scheme:
a vacuum exhaust device for a cavity of an automobile injection mold comprises a fixed mold part structure at the lower end and a movable mold part structure at the upper end, wherein the movable mold part structure is arranged above the fixed mold part structure in a butt joint mode; the fixed die part structure comprises a horizontal fixed die plate at the upper end, the movable die part structure comprises a movable die plate at the lower end, the movable die plate is attached to and butted on the fixed die plate, and an upper die cavity and a lower die cavity are respectively formed on a group of opposite surfaces of the fixed die plate and the movable die plate; an upper molding cavity and a lower molding cavity which are arranged in pairs are respectively formed on the upper die cavity and the lower die cavity; the device is characterized in that the edges of the upper die cavity and the lower die cavity are respectively recessed to form an upper exhaust groove and a lower exhaust groove which are annular as a whole; the upper die cavity and the lower die cavity are respectively provided with a vertical upper vent hole and a vertical lower vent hole at the edge, the upper vent hole and the lower vent hole are respectively communicated with the upper vent groove and the lower vent groove, and the side surface of the movable die plate and the side surface of the fixed die plate are respectively provided with an upper connecting hole and a lower connecting hole which are respectively connected with the upper vent hole and the lower vent hole; and the outer ends of the upper connecting hole and the lower connecting hole respectively form an external interface and are used for being connected with a vacuum pump.
In this way, the edges of the upper die cavity and the lower die cavity are respectively concave inwards to form an upper exhaust groove and a lower exhaust groove which are integrally annular, the edges of the upper die cavity and the lower die cavity are respectively provided with a vertical upper exhaust hole and a vertical lower exhaust hole, the upper exhaust hole and the lower exhaust hole are respectively communicated with the upper exhaust groove and the lower exhaust groove, and the side surface of the movable die plate and the side surface of the fixed die plate are respectively provided with an upper connecting hole and a lower connecting hole which are respectively connected with the upper exhaust hole and the lower exhaust hole; and the outer ends of the upper connecting hole and the lower connecting hole are respectively connected with a vacuum pump, when the mould is used for finishing injection molding, the vacuum pump is started firstly, the vacuum pump can finish vacuumizing the upper mould cavity and the lower mould cavity so as to pump out air in the mould, and after the vacuumizing is finished, the injection molding is started. Therefore, the gas trapping and the scorching of the product can be reduced, and the rejection rate is reduced; the injection molding process is optimized, and the appearance is improved. The device structure has the advantages of simple structure, better air trapping in the cavity of the mold and better completion of injection molding of the workpiece.
Preferably, the fixed die plate comprises a fixed die fixing plate, a lower mounting hole of a rectangular hole structure is formed in the middle of the upper surface of the fixed die fixing plate in a concave mode, a lower die plate of a rectangular plate structure is arranged in the lower mounting hole, and the upper surface of the lower die plate forms the lower die cavity.
Therefore, through the design of the fixed die plate, the use cost of the die can be better reduced, and after the die is used for multiple times, only the lower die plate which is easy to damage needs to be replaced.
Preferably, the movable die plate comprises a movable die fixing plate, an upper mounting hole of a rectangular hole structure is formed in the middle of the lower surface of the movable die fixing plate in a concave mode, an upper die plate of the rectangular plate structure is arranged in the upper mounting hole, and the lower surface of the upper die plate forms the upper die cavity.
Like this, through with the movable mould board design for movable mould fixed plate and cope match-plate pattern, it is more reasonable to design, and the mould is used many times the back, only needs to change the cope match-plate pattern to reduce use cost.
As optimization, the upper mounting hole and the lower mounting hole are both in blind hole design.
Thus, the structure is simpler, and the design is more reasonable.
Preferably, four corner positions of the lower surface of the upper template respectively protrude downwards to form butt joint convex blocks, and four corner positions of the upper surface of the lower template are respectively provided with butt joint notches for the butt joint convex blocks to be inserted and matched.
Therefore, when the upper template and the lower template are butted in a pasting way, the butt joint convex block is matched with the butt joint notch, and the guide effect can be achieved.
As optimization, the diameter of the upper connecting hole is larger than that of the upper exhaust hole; the diameter of the lower connecting hole is larger than that of the lower vent hole.
Therefore, the design is more reasonable, and the vacuumizing can be better completed.
As optimization, projections of the upper exhaust holes and the upper exhaust grooves in the horizontal direction are partially overlapped; the projections of the lower exhaust hole and the lower exhaust groove in the horizontal direction are partially overlapped.
Like this, the design is more reasonable, goes up the exhaust vent and go up the exhaust groove and lower exhaust vent and lower exhaust groove can switch on better.
Drawings
Fig. 1 is a schematic structural view of a vacuum exhaust device for a cavity of an injection mold of an automobile according to an embodiment of the present invention.
FIG. 2 is a schematic structural diagram of a fixed mold part structure in FIG. 1.
FIG. 3 is a schematic structural diagram of a movable mold part in FIG. 1.
Fig. 4 is a schematic structural view of the fixed die plate and the movable die plate in fig. 1 after being matched together.
Fig. 5 is a front view of fig. 4.
Fig. 6 is a sectional view a-a of fig. 5.
Fig. 7 is a rear view of fig. 4.
Fig. 8 is a sectional view B-B of fig. 7.
Detailed Description
The invention will be further explained with reference to the following figures and examples:
referring to fig. 1 to 8: a vacuum exhaust device for a cavity of an automobile injection mold comprises a fixed mold part structure 1 at the lower end and a movable mold part structure 2 at the upper end, wherein the movable mold part structure is arranged above the fixed mold part structure in a butt joint mode; the fixed die part structure comprises a horizontal fixed die plate 3 at the upper end, the movable die part structure comprises a movable die plate 4 at the lower end, the movable die plate is attached to and butted with the fixed die plate, and an upper die cavity 5 and a lower die cavity 6 are respectively formed on a group of opposite surfaces of the fixed die plate and the movable die plate; an upper molding cavity 7 and a lower molding cavity 8 which are arranged in pairs are respectively formed on the upper mold cavity and the lower mold cavity; the edges of the upper die cavity and the lower die cavity are respectively concave inwards to form an upper exhaust groove 9 and a lower exhaust groove 10 which are annular as a whole; the edge of the upper die cavity and the edge of the lower die cavity are respectively provided with a vertical upper vent hole 11 and a vertical lower vent hole 12, the upper vent hole and the lower vent hole are respectively communicated with the upper vent groove and the lower vent groove, and the side surface of the movable die plate and the side surface of the fixed die plate are respectively provided with an upper connecting hole 13 and a lower connecting hole 14 which are respectively connected with the upper vent hole and the lower vent hole; and the outer ends of the upper connecting hole and the lower connecting hole respectively form an external interface and are used for being connected with a vacuum pump.
In this way, the edges of the upper die cavity and the lower die cavity are respectively concave inwards to form an upper exhaust groove and a lower exhaust groove which are integrally annular, the edges of the upper die cavity and the lower die cavity are respectively provided with a vertical upper exhaust hole and a vertical lower exhaust hole, the upper exhaust hole and the lower exhaust hole are respectively communicated with the upper exhaust groove and the lower exhaust groove, and the side surface of the movable die plate and the side surface of the fixed die plate are respectively provided with an upper connecting hole and a lower connecting hole which are respectively connected with the upper exhaust hole and the lower exhaust hole; and the outer ends of the upper connecting hole and the lower connecting hole are respectively connected with a vacuum pump, when the mould is used for finishing injection molding, the vacuum pump is started firstly, the vacuum pump can finish vacuumizing the upper mould cavity and the lower mould cavity so as to pump out air in the mould, and after the vacuumizing is finished, the injection molding is started. Therefore, the gas trapping and the scorching of the product can be reduced, and the rejection rate is reduced; the injection molding process is optimized, and the appearance is improved. The device structure has the advantages of simple structure, better air trapping in the cavity of the mold and better completion of injection molding of the workpiece.
Specifically, the upper vent hole and the lower vent hole are arranged at intervals in the horizontal direction. Therefore, the vacuum can be better pumped, and the vacuum pumping effect on the interior of the die is better.
In this embodiment, the fixed die plate 3 includes a fixed die fixing plate 15, a lower mounting hole with a rectangular hole structure is formed in the middle of the upper surface of the fixed die fixing plate in a concave manner, a lower die plate 16 with a rectangular plate structure is arranged in the lower mounting hole, and the upper surface of the lower die plate forms the lower die cavity.
Therefore, through the design of the fixed die plate, the use cost of the die can be better reduced, and after the die is used for multiple times, only the lower die plate which is easy to damage needs to be replaced.
In this embodiment, the movable mold plate 4 includes a movable mold fixing plate 17, an upper mounting hole of a rectangular hole structure is recessed in the middle of the lower surface of the movable mold fixing plate, an upper mold plate 18 of a rectangular plate structure is disposed in the upper mounting hole, and the lower surface of the upper mold plate forms the upper mold cavity.
Like this, through with the movable mould board design for movable mould fixed plate and cope match-plate pattern, it is more reasonable to design, and the mould is used many times the back, only needs to change the cope match-plate pattern to reduce use cost.
In this specific embodiment, the upper mounting hole and the lower mounting hole are both blind holes.
Thus, the structure is simpler, and the design is more reasonable.
In the present embodiment, four corner positions on the lower surface of the upper template are respectively protruded downwards to form a butt-joint protrusion 19, and four corner positions on the upper surface of the lower template are respectively provided with a butt-joint notch 20 for the butt-joint protrusion to be inserted and matched.
Therefore, when the upper template and the lower template are butted in a pasting way, the butt joint convex block is matched with the butt joint notch, and the guide effect can be achieved.
In the present embodiment, the diameter of the upper connection hole 13 is larger than that of the upper vent hole 11; the diameter of the lower connection hole 14 is set larger than that of the lower exhaust hole 12.
Therefore, the design is more reasonable, and the vacuumizing can be better completed.
In the embodiment, the projections of the upper exhaust holes and the upper exhaust grooves in the horizontal direction are partially overlapped; the projections of the lower exhaust hole and the lower exhaust groove in the horizontal direction are partially overlapped.
Like this, the design is more reasonable, goes up the exhaust vent and go up the exhaust groove and lower exhaust vent and lower exhaust groove can switch on better.
The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.
Claims (7)
1. A vacuum exhaust device for a cavity of an automobile injection mold comprises a fixed mold part structure at the lower end and a movable mold part structure at the upper end, wherein the movable mold part structure is arranged above the fixed mold part structure in a butt joint mode; the fixed die part structure comprises a horizontal fixed die plate at the upper end, the movable die part structure comprises a movable die plate at the lower end, the movable die plate is attached to and butted on the fixed die plate, and an upper die cavity and a lower die cavity are respectively formed on a group of opposite surfaces of the fixed die plate and the movable die plate; an upper molding cavity and a lower molding cavity which are arranged in pairs are respectively formed on the upper die cavity and the lower die cavity; the device is characterized in that the edges of the upper die cavity and the lower die cavity are respectively recessed to form an upper exhaust groove and a lower exhaust groove which are annular as a whole; the upper die cavity and the lower die cavity are respectively provided with a vertical upper vent hole and a vertical lower vent hole at the edge, the upper vent hole and the lower vent hole are respectively communicated with the upper vent groove and the lower vent groove, and the side surface of the movable die plate and the side surface of the fixed die plate are respectively provided with an upper connecting hole and a lower connecting hole which are respectively connected with the upper vent hole and the lower vent hole; and the outer ends of the upper connecting hole and the lower connecting hole respectively form an external interface and are used for being connected with a vacuum pump.
2. The vacuum exhaust device for the cavity of the injection mold of the automobile as claimed in claim 1, wherein: the fixed die plate comprises a fixed die fixing plate, a lower mounting hole of a rectangular hole structure is formed in the middle of the upper surface of the fixed die fixing plate in a concave mode, a lower die plate of the rectangular plate structure is arranged in the lower mounting hole, and the upper surface of the lower die plate forms the lower die cavity.
3. The vacuum exhaust device for the cavity of the injection mold of the automobile as claimed in claim 2, wherein: the movable mould plate comprises a movable mould fixing plate, an upper mounting hole of a rectangular hole structure is formed in the middle of the lower surface of the movable mould fixing plate in a concave mode, an upper mould plate of the rectangular plate structure is arranged in the upper mounting hole, and the lower surface of the upper mould plate forms the upper mould cavity.
4. The vacuum exhaust device for the cavity of the injection mold of the automobile as claimed in claim 3, wherein: the upper mounting hole and the lower mounting hole are both designed as blind holes.
5. The vacuum exhaust device for the cavity of the injection mold of the automobile as claimed in claim 3, wherein: four corner positions on the lower surface of the upper template respectively protrude downwards to form butt joint convex blocks, and four corner positions on the upper surface of the lower template are respectively provided with butt joint notches for the butt joint convex blocks to be inserted and matched.
6. The vacuum exhaust device for the cavity of the injection mold of the automobile as claimed in claim 1, wherein: the diameter of the upper connecting hole is larger than that of the upper vent hole; the diameter of the lower connecting hole is larger than that of the lower vent hole.
7. The vacuum exhaust device for the cavity of the injection mold of the automobile as claimed in claim 1, wherein: the projections of the upper exhaust holes and the upper exhaust grooves in the horizontal direction are partially overlapped; the projections of the lower exhaust hole and the lower exhaust groove in the horizontal direction are partially overlapped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022176591.1U CN213797876U (en) | 2020-09-27 | 2020-09-27 | Vacuum exhaust device for automobile injection mold cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022176591.1U CN213797876U (en) | 2020-09-27 | 2020-09-27 | Vacuum exhaust device for automobile injection mold cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213797876U true CN213797876U (en) | 2021-07-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022176591.1U Active CN213797876U (en) | 2020-09-27 | 2020-09-27 | Vacuum exhaust device for automobile injection mold cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213797876U (en) |
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2020
- 2020-09-27 CN CN202022176591.1U patent/CN213797876U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 4021-768, sanzhiqing Road, bigang District, Chongqing Patentee after: Chongqing Sipuning Technology Co.,Ltd. Address before: No. 4021-768, sanzhiqing Road, bigang District, Chongqing Patentee before: CHONGQING SIPUNING PLASTIC PRODUCTS CO.,LTD. |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A vacuum exhaust device for automotive injection mold cavity Granted publication date: 20210727 Pledgee: China Construction Bank Corporation Chongqing Shapingba Branch Pledgor: Chongqing Sipuning Technology Co.,Ltd. Registration number: Y2024980000527 |