CN211389928U - Injection mold - Google Patents
Injection mold Download PDFInfo
- Publication number
- CN211389928U CN211389928U CN201922221736.2U CN201922221736U CN211389928U CN 211389928 U CN211389928 U CN 211389928U CN 201922221736 U CN201922221736 U CN 201922221736U CN 211389928 U CN211389928 U CN 211389928U
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- China
- Prior art keywords
- mold
- frame
- die
- core
- ejector
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- Expired - Fee Related
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- 238000002347 injection Methods 0.000 title claims abstract description 19
- 239000007924 injection Substances 0.000 title claims abstract description 19
- 238000001746 injection moulding Methods 0.000 claims abstract description 22
- 238000001816 cooling Methods 0.000 claims abstract description 9
- 230000000694 effects Effects 0.000 abstract description 6
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010923 batch production Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
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- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The utility model discloses an injection mold, which comprises a feeding mechanism, a mold opening mechanism and an ejection mechanism, wherein the mold opening mechanism comprises a front mold frame and a rear mold frame which are internally provided with cooling pipelines, a front mold core is embedded in the front mold frame, a rear mold core is arranged on the rear mold frame, and the front mold core and the rear mold core are matched with each other and form a mold cavity when being closed; the front die core is internally provided with a demolding cavity channel, the demolding cavity channel is internally provided with a sliding ejection column, the demolding cavity channel is internally provided with a limiting table for limiting the moving position of the ejection column, an elastic piece is arranged between the ejection column and the feeding mechanism, and one end of the ejection column is abutted against the rear die core. Increase gliding fore-set on front mould benevolence, the fore-set can provide an outside atress to injection moulding product under the effect of elastic component when the die sinking, alleviates the bad influence of the power of dragging on the front mould benevolence to injection moulding product when the die sinking, and the quality of injection moulding product is improved in the quick drawing of patterns.
Description
Technical Field
The utility model relates to a mould field especially relates to a stable injection mold of ejecting shaping.
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 injection mold needs to be opened after injection molding, the stress of the front mold core and the rear mold core can not be completely the same during mold opening, the acting point during mold opening forms pulling force on the rear mold core at the rear mold core, and pulling force is formed on the front mold core, the stress of the rear mold core is greater than that of the front mold core, and the product on the front mold core can be pulled to deform, so that the product quality is influenced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide an injection mold, which improves the existing mold structure and improves the product quality.
In order to achieve the above purpose, the utility model discloses a technical scheme is: the utility model provides an injection mold, includes feed mechanism, die sinking mechanism and ejection mechanism, its characterized in that: the mold opening mechanism comprises a front mold frame and a rear mold frame which are internally provided with cooling pipelines, a front mold core is embedded in the front mold frame, a rear mold core is arranged on the rear mold frame, and the front mold core and the rear mold core are matched with each other and form a mold cavity when being assembled; the front die core is internally provided with a demolding cavity channel, the demolding cavity channel is internally provided with a sliding ejection column, the demolding cavity channel is internally provided with a limiting table for limiting the moving position of the ejection column, an elastic piece is arranged between the ejection column and the feeding mechanism, and one end of the ejection column is abutted against the rear die core.
Further, a convex block and a concave block which are mutually matched are respectively arranged on the front die frame and the rear die frame, and the convex block is embedded into a groove of the concave block when the dies are closed.
Furthermore, at least three sides of the front mold frame and the rear mold frame are provided with the convex block and the concave block, and the convex block and the concave block play a role in straightening, so that the positioning precision in mold closing is improved.
The feeding mechanism comprises a front die carrier base plate and a receiving plate, wherein a main runner for injection molding is arranged on the front die carrier base plate, the receiving plate is positioned between the front die carrier base plate and a front die carrier, and a cooling pipeline is arranged in the receiving plate; and a plurality of flow guide pipes are arranged in the bearing plate, one ends of the flow guide pipes are communicated with the main runner, and the other ends of the flow guide pipes are communicated with the mold cavity.
The ejector mechanism comprises a rear die frame bottom plate and an ejector plate, the ejector plate is located between the rear die frame bottom plate and the rear die frame, a plurality of ejector pins are arranged on the ejector plate, and the ejector pins enter a die cavity through ejector pin channels on the rear die frame; every thimble all inserts and establishes in the thimble passageway that lies in to correspond, the thimble board is kept away from thimble one end and is provided with a plurality of drive connecting rods, drive connecting rod can run through back die carrier bottom plate and be connected with drive arrangement.
Furthermore, a plurality of thimble guide pillars are arranged on the thimble plate, and thimble sleeve holes matched with the thimble guide pillars are arranged on the rear die frame; the rear die carrier is provided with a plurality of positioning guide pillars, and the front die carrier is provided with a positioning guide sleeve matched with the positioning guide pillars.
Compared with the prior art, the utility model discloses increase gliding fore-set on front mould benevolence, the fore-set can provide an outside atress to injection moulding product under the effect of elastic component when the die sinking, and the bad influence of the power of dragging on the front mould benevolence to injection moulding product when alleviateing the die sinking, the fast demoulding improves injection moulding product's quality.
Drawings
FIG. 1 is a perspective view of a structural mold assembly according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;
fig. 3 is a partial perspective view of an embodiment of the present invention;
fig. 4 is a schematic view illustrating the cooperation between the front mold core and the top pillar according to an embodiment of the present invention.
In the figure:
1-front mould base plate; 2-bearing plate; 3-front mould frame; 4-rear mould frame; 5-ejector pin plate; 6-rear mould frame bottom plate; 7-a thimble; 8-a flow guide pipe; 9-a pouring gate; 10-front mold core; 11-rear mold core; 12-an ejector spring; 13-cube; 14-a concave block; 15-a convex block; 16-an elastic member; 17-a top pillar; 18-injection molded products; 19-connecting the pipes; 20-a limit table; 21-a drive connecting rod; 100-cooling the pipeline.
Detailed Description
The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.
Examples
Referring to fig. 1 to 4, an injection mold in this embodiment includes a feeding mechanism, a mold opening mechanism, and an ejection mechanism, where the feeding mechanism is used for injecting an injection molding raw material, and introducing the injection molding raw material into a mold cavity for injection molding; the mold opening mechanism is a carrier for injection molding; the ejection mechanism is used for opening the mold opening mechanism to expose the injection molding product.
Specifically, the mold opening mechanism comprises a front mold frame 3 and a rear mold frame 4, wherein a cooling pipeline 100 is arranged in the front mold frame 3, a front mold core 10 is embedded in the front mold frame 3, a rear mold core 11 is arranged on the rear mold frame 4, and the front mold core 10 and the rear mold core 11 are matched with each other to form a mold cavity when being assembled. Referring to fig. 4, a mold release channel is provided in the front mold core 10, a sliding top pillar 17 is provided in the mold release channel, a limiting table 20 for limiting the moving position of the top pillar is provided in the mold release channel, an elastic member 16 is provided between the top pillar 17 and the feeding mechanism, one end of the top pillar abuts against the rear mold core 11, and particularly, the top pillar 17 may also abut against an injection molded product 18 formed on the rear mold core 11. The elastic piece 16 is a spring, and is sleeved on the top column 17, one end of the spring abuts against the top column 17, and the other end of the spring abuts against the feeding mechanism. When the mold is closed, the top pillar 17 is pushed to one side of the feeding mechanism, and the spring is in a contraction state. When the mold is opened, the spring returns to the natural state, and the ejection column 17 is ejected out towards the rear mold core 11, so that an outward stress is provided for the injection molding product 18, the adverse effect of the dragging force on the front mold core 10 on the injection molding product is reduced when the mold is opened, the mold is quickly released, and the quality of the injection molding product is improved.
In this embodiment, in order to improve the positioning accuracy during mold clamping, the front mold frame 3 and the rear mold frame 4 are respectively provided with a convex block 15 and a concave block 14 which are engaged with each other, and the convex block 15 is inserted into a groove of the concave block 14 during mold clamping. In order to improve the alignment effect of the convex blocks 15 and the concave blocks 14, at least three sides of the front mold frame 3 and the rear mold frame 4 are provided with the convex blocks 15 and the concave blocks 14.
In this embodiment, feed mechanism includes preceding die carrier bottom plate 1 and accepts board 2, be equipped with the sprue that is used for moulding plastics on the preceding die carrier bottom plate 1, it is located between preceding die carrier bottom plate 1 and the preceding die carrier 3 to accept board 2, is provided with cooling duct 100 in it. A plurality of flow guide pipes 8 are arranged in the bearing plate 2, one ends of the flow guide pipes 8 are communicated with the main runner, and the other ends of the flow guide pipes 8 are communicated with the die cavity. In this embodiment, the main flow passage is composed of a pouring gate 9 and an arc-shaped connecting pipe 19, and the flow guide pipe 8 is communicated with the connecting pipe 19. Pouring materials are injected from the pouring port 9, enter the flow guide pipe 8 along the connecting pipeline 19, enter the mold cavity along the flow guide pipe 8, and are finally poured and molded.
The ejection mechanism in the embodiment comprises a rear die carrier bottom plate 6 and an ejector plate 5, wherein the ejector plate 5 is positioned between the rear die carrier bottom plate 6 and the rear die carrier 4. In this embodiment, square irons 13 are arranged on both sides of the rear mold frame bottom plate 6, and the ejector plate 5 is arranged between the two square bodies 13. A plurality of ejector pins 7 are arranged on the ejector plate 5, and the ejector pins 7 enter the die cavity through ejector pin channels on the rear die frame 4; each thimble 7 is inserted and arranged in the corresponding thimble channel, one end of the thimble plate 5, which is far away from the thimble, is provided with a plurality of driving connecting rods 21, and the driving connecting rods 21 can penetrate through the rear die carrier bottom plate 6 and are connected with a driving device.
In order to realize the mold opening operation of the injection mold, as in the existing injection mold, the ejector plate 5 in this embodiment is provided with a plurality of ejector guide posts, and the ejector guide posts are sleeved with ejector springs 12. The rear die carrier 4 is provided with a thimble sleeve hole matched with the thimble guide post; the rear die carrier 4 is provided with a plurality of positioning guide pillars, and the front die carrier 3 is provided with a positioning guide sleeve matched with the positioning guide pillars.
The utility model discloses a core protection point lies in through increasing gliding fore-set on front mould benevolence, and the fore-set can provide an outside atress to injection moulding product under the effect of elastic component when the die sinking, and the adverse effect to injection moulding product of dragging power on the front mould benevolence when alleviateing the die sinking, the quick drawing of patterns improves injection moulding product's quality.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, so as not to limit the protection scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered in the protection scope of the present invention.
Claims (6)
1. The utility model provides an injection mold, includes feed mechanism, die sinking mechanism and ejection mechanism, its characterized in that: the mold opening mechanism comprises a front mold frame and a rear mold frame which are internally provided with cooling pipelines, a front mold core is embedded in the front mold frame, a rear mold core is arranged on the rear mold frame, and the front mold core and the rear mold core are matched with each other and form a mold cavity when being assembled; the front die core is internally provided with a demolding cavity channel, the demolding cavity channel is internally provided with a sliding ejection column, the demolding cavity channel is internally provided with a limiting table for limiting the moving position of the ejection column, an elastic piece is arranged between the ejection column and the feeding mechanism, and one end of the ejection column is abutted against the rear die core.
2. An injection mold according to claim 1, wherein: and the front mold frame and the rear mold frame are respectively provided with a convex block and a concave block which are mutually matched, and the convex block is embedded into a groove of the concave block when the molds are closed.
3. An injection mould according to claim 2, characterized in that: the convex block and the concave block are arranged on at least three sides of the front die frame and the rear die frame.
4. An injection mold according to claim 1, wherein: the feeding mechanism comprises a front die carrier base plate and a bearing plate, a main runner for injection molding is arranged on the front die carrier base plate, the bearing plate is positioned between the front die carrier base plate and the front die carrier, and a cooling pipeline is arranged in the bearing plate; and a plurality of flow guide pipes are arranged in the bearing plate, one ends of the flow guide pipes are communicated with the main runner, and the other ends of the flow guide pipes are communicated with the mold cavity.
5. An injection mold according to claim 1, wherein: the ejection mechanism comprises a rear die frame bottom plate and an ejector plate, the ejector plate is positioned between the rear die frame bottom plate and the rear die frame, a plurality of ejector pins are arranged on the ejector plate, and the ejector pins enter the die cavity through ejector pin channels on the rear die frame; every thimble all inserts and establishes in the thimble passageway that lies in to correspond, the thimble board is kept away from thimble one end and is provided with a plurality of drive connecting rods, drive connecting rod can run through back die carrier bottom plate and be connected with drive arrangement.
6. An injection mold according to claim 5, wherein: the ejector plate is provided with a plurality of ejector pin guide columns, and the rear die frame is provided with ejector pin sleeve holes matched with the ejector pin guide columns; the rear die carrier is provided with a plurality of positioning guide pillars, and the front die carrier is provided with a positioning guide sleeve matched with the positioning guide pillars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922221736.2U CN211389928U (en) | 2019-12-12 | 2019-12-12 | Injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922221736.2U CN211389928U (en) | 2019-12-12 | 2019-12-12 | Injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211389928U true CN211389928U (en) | 2020-09-01 |
Family
ID=72214314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922221736.2U Expired - Fee Related CN211389928U (en) | 2019-12-12 | 2019-12-12 | Injection mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211389928U (en) |
-
2019
- 2019-12-12 CN CN201922221736.2U patent/CN211389928U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200901 |