CN114851490A - Fixed die slide block core pulling mechanism of injection mold - Google Patents
Fixed die slide block core pulling mechanism of injection mold Download PDFInfo
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- CN114851490A CN114851490A CN202210289903.0A CN202210289903A CN114851490A CN 114851490 A CN114851490 A CN 114851490A CN 202210289903 A CN202210289903 A CN 202210289903A CN 114851490 A CN114851490 A CN 114851490A
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- fixed die
- insert
- fixed
- core pulling
- slide block
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- 238000002347 injection Methods 0.000 title claims abstract description 18
- 239000007924 injection Substances 0.000 title claims abstract description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000000243 solution Substances 0.000 description 11
- 238000005457 optimization Methods 0.000 description 10
- 238000001746 injection moulding Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/40—Removing or ejecting moulded articles
- B29C45/44—Removing or ejecting moulded articles for undercut articles
- B29C45/4435—Removing or ejecting moulded articles for undercut articles using inclined, tiltable or flexible undercut forming elements driven by the ejector means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/33—Moulds having transversely, e.g. radially, movable mould parts
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to a fixed die slide block core pulling mechanism of an injection mold, which comprises a movable die and a fixed die, wherein the fixed die comprises a fixed die frame and a fixed die insert positioned in the fixed die frame, a fixed die movable insert, a slide block, an inclined guide pillar and a spring are arranged in the fixed die insert, one end of the spring is connected with the fixed die movable insert, the other end of the spring penetrates through the fixed die insert and is connected with the fixed die frame, an inclined guide hole is formed in the slide block, one end of the inclined guide pillar is positioned in the guide hole, and the other end of the inclined guide pillar is fixed with the fixed die insert. Compared with the prior art, the invention arranges the slide block and the inclined guide post in the fixed die to realize smooth core pulling of the product back-off; the fixed die movable insert block drives the sliding block to move when the die is opened, so that the stability of the die is improved, and the yield of products is improved; the inclined guide pillar is fixed with the fixed die insert, so that the core-pulling distance is reduced.
Description
Technical Field
The invention relates to a fixed die slide block core pulling mechanism of an injection mold, and belongs to the technical field of injection molds.
Background
The back-off structure often appears in injection moulding product, adopts the slider to realize loosing core usually. However, the conventional slider core pulling structure has the problems of complex structure and large core pulling distance, is not suitable for a fixed die with small internal space, and also has the problems of unstable motion process, easy core pulling and demoulding failure of products, low yield and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a fixed die slide block core pulling mechanism of an injection mold, which has a simple structure.
The technical scheme adopted by the invention for realizing the purpose is as follows:
the fixed die sliding block core pulling mechanism of the injection mold comprises a movable die and a fixed die, wherein the fixed die comprises a fixed die frame and a fixed die insert positioned in the fixed die frame, a fixed die movable insert, a sliding block, an inclined guide pillar and a spring are arranged in the fixed die insert, one end of the spring is connected with the fixed die movable insert, the other end of the spring penetrates through the fixed die insert and is connected with the fixed die frame, an inclined guide hole is formed in the sliding block, one end of the inclined guide pillar is positioned in the guide hole, and the other end of the inclined guide pillar is fixed with the fixed die insert.
As a further optimization of the above technical solution: when the die is closed, the spring is in a compressed state; after the die is opened, the elasticity of the spring is released, the fixed die movable insert drives the sliding block to move relative to the fixed die frame and the fixed die insert, and meanwhile, the sliding block generates transverse displacement along the inclined guide post.
As a further optimization of the above technical solution: still be equipped with the locking module in the cover half insert, the one end of locking module with the cover half insert is fixed mutually, and the other end system has leads smooth inclined plane, the system has the cooperation inclined plane on the slider, lead the inclination on smooth inclined plane with the inclination on cooperation inclined plane is the same, lead smooth inclined plane with the cooperation inclined plane is hugged closely.
As a further optimization of the above technical solution: the interior slope of mode locking piece is provided with the antifriction plate, a side of antifriction plate with lead smooth inclined plane coplane, a side of antifriction plate with the cooperation inclined plane is hugged closely.
As a further optimization of the above technical solution: the fixed die is characterized in that a limiting screw is arranged in the fixed die, a limiting hole is formed in the fixed die movable insert, the limiting hole comprises a large hole and a small hole, a limiting step is formed between the large hole and the small hole, a cap head of the limiting screw is located in the large hole and can move up and down in the large hole, a rod part of the limiting screw penetrates through the large hole, the small hole and the fixed die insert are fixed, and a certain distance exists between the limiting step and the cap head of the limiting screw during die assembly.
As a further optimization of the above technical solution: and the sliding block is provided with a forming block for forming the product back-off, and the forming block penetrates through the fixed die movable insert and the fixed die insert.
As a further optimization of the above technical solution: the spring is a nitrogen spring.
As a further optimization of the above technical solution: the fixed die insert is internally provided with a core-pulling groove, the fixed die movable insert is positioned in the core-pulling groove and can move up and down in the core-pulling groove, the fixed die movable insert is internally provided with a containing cavity, and the sliding block is positioned in the containing cavity and can move left and right in the containing cavity.
As a further optimization of the above technical solution: the fixed die insert is characterized in that a guide pillar is further arranged in the fixed die insert, one end of the guide pillar is connected with the fixed die frame, the other end of the guide pillar penetrates through the fixed die movable insert and is fixed with the fixed die, and the fixed die insert and the fixed die movable insert can move up and down relative to the guide pillar.
As a further optimization of the above technical solution: the guide post is further sleeved with a guide sleeve, and the guide sleeve is fixed in the fixed die insert.
As a further optimization of the above technical solution: the spring, the limiting screw and the guide post are all provided with two groups.
Compared with the prior art, the invention arranges the slide block and the inclined guide post in the fixed die to realize smooth core pulling of the product back-off; the fixed die movable insert block drives the sliding block to move when the die is opened, so that the stability of the die is improved, and the yield of products is improved; the inclined guide pillar is fixed with the fixed die insert, so that the core-pulling distance is reduced.
Drawings
Fig. 1 is a schematic cross-sectional structure of the present invention.
Fig. 2 is another schematic cross-sectional structure of the present invention.
Fig. 3 is a schematic perspective view of a part of the structure of the present invention.
Detailed Description
The invention is further described with reference to the following figures and detailed description. As shown in fig. 1 to 3, the fixed mold slide block core pulling mechanism of the injection mold comprises a movable mold and a fixed mold, wherein the fixed mold comprises a fixed mold frame and a fixed mold insert 1 positioned in the fixed mold frame. The fixed die insert 1 is internally provided with a fixed die movable insert 2, a slide block 3, an inclined guide post 4 and a spring 5. The fixed die insert 1 is internally provided with a core pulling groove 11, and the fixed die movable insert 2 is positioned in the core pulling groove 11 and can move up and down in the core pulling groove 11. One end of a spring 5 is connected with the fixed die movable insert 2, the other end of the spring penetrates through the fixed die insert 1 and is connected with the fixed die frame, and the spring 5 is a nitrogen spring. The nitrogen spring has the advantages of small volume, large elasticity, stable work, long service life and the like. The fixed die movable insert 2 is internally provided with a containing cavity, the slide block 3 is positioned in the containing cavity and can move left and right in the containing cavity, and the fixed die movable insert 2 drives the slide block 3 to move synchronously. An inclined guide hole 31 is formed in the slide block 3, one end of an inclined guide post 4 is positioned in the guide hole 31, and the other end of the inclined guide post 4 penetrates through the fixed die movable insert 2 and is fixed with the fixed die insert 1. After the installation, the inclined angle of the inclined guide post 4 is 30 degrees. The inclined guide pillar is fixed with the fixed die insert instead of the movable die, so that the core-pulling distance is reduced. The sliding block 3 is provided with a forming block 32 for reversely buckling and forming a product, and the forming block 32 penetrates through the fixed die movable insert 2 and the fixed die insert 1. When the die is assembled, the spring 5 is in a compressed state, and the forming block 32, the fixed die insert 1 and the fixed die movable insert 2 jointly form a part of a die cavity. The compressed spring 5 is used for providing core-pulling power, so that the stability of the die is improved, smooth core-pulling of the product back-off is realized, and the yield of the product is improved.
In the above technical scheme: the fixed die insert 1 is also internally provided with a lock module 6, one end of the lock module 6 is fixed with the fixed die insert 1, and the other end is positioned in the containing cavity and provided with a sliding guide inclined surface 61. The slide block 3 is provided with a matching inclined plane 33, and the inclined angle of the slide guide inclined plane 61 is the same as that of the matching inclined plane 33. A wear-resistant plate 7 is obliquely arranged in the lock module 6, the wear-resistant plate 7 is embedded in the lock module 6, and one side face of the wear-resistant plate 7 is coplanar with the sliding guide inclined face 61. During die assembly, one side surface of the wear-resisting plate 7 and the sliding guide inclined surface 61 are tightly attached to the matching inclined surface 33, so that the sliding block 3 in the injection molding process is positioned, and the injection molding failure caused by the backward movement of the sliding block 3 due to injection molding force is prevented. The provision of wear plates 7 reduces wear of the lock modules 6.
In the above technical scheme: a limiting screw 9 is arranged in the fixed die, a limiting hole 21 is formed in the fixed die movable insert 2, the limiting hole 21 comprises a large hole and a small hole, and a limiting step 22 is formed between the large hole and the small hole. The cap head of the limit screw 9 is positioned in the big hole and can move up and down in the big hole, and the rod part of the limit screw 9 penetrates through the big hole and the small hole and is fixed with the fixed die insert 1. When the die is closed, a certain distance exists between the limiting step 22 and the cap head of the limiting screw 9, and the distance is 41 mm.
In the above technical scheme: and a guide pillar 8 is also arranged in the fixed die insert 1, one end of the guide pillar 8 is connected with the fixed die frame, and the other end of the guide pillar 8 penetrates through the fixed die movable insert 2 and is fixed with the fixed die. The fixed die insert 1 and the fixed die movable insert 2 can move up and down relative to the guide post 8. The guide post 8 is also sleeved with a guide sleeve 10, and the guide sleeve 10 is fixed in the fixed die insert 1.
In the above technical scheme: spring 5, spacing screw 9 and guide pillar 8 all are provided with two sets ofly for the process of loosing core is more reliable and more stable.
The working process of the invention is as follows, when the mould is closed, the spring 5 is in a compressed state. When the die is opened, the elasticity of the spring 5 is released to drive the fixed die movable insert 2 to move downwards relative to the fixed die frame and the fixed die insert 1. The slide block 3 synchronously moves downwards, and simultaneously the slide block 3 generates transverse displacement along the inclined guide post 5, so that the slide block 3 moves downwards in an inclined mode, and the forming block 32 gradually moves towards the inner part of the fixed die movable insert 2. The wear plate 7, the slide guiding inclined surface 61 and the matching inclined surface 33 are tightly attached to guide the downward oblique movement of the slide block 3. Until the limit step 22 is contacted with the cap head of the limit screw 9, the motion of the fixed die movable insert 2 moving downwards relative to the fixed die insert 1 is stopped, at this time, the forming block 32 completely drops off the product back-off, and the core pulling of the sliding block 3 is finished. The fixed die drives the fixed die frame, the fixed die insert 1 and the fixed die movable insert 2 to synchronously move.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. 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 concept of the present invention should fall within the scope of the present invention.
Claims (10)
1. The fixed die sliding block core pulling mechanism of the injection mold comprises a movable die and a fixed die, wherein the fixed die comprises a fixed die frame and a fixed die insert (1) positioned in the fixed die frame, and the fixed die sliding block core pulling mechanism is characterized in that a fixed die movable insert (2), a sliding block (3), an inclined guide pillar (4) and a spring (5) are arranged in the fixed die insert (1), one end of the spring (5) is connected with the fixed die movable insert (2), the other end of the spring penetrates through the fixed die insert (1) and is connected with the fixed die frame, an inclined guide hole (31) is formed in the sliding block (3), one end of the inclined guide pillar (4) is positioned in the guide hole (31), and the other end of the inclined guide pillar is fixed with the fixed die insert (1);
when the die is closed, the spring (5) is in a compressed state; when the die is opened, the elasticity of the spring (5) is released, the fixed die movable insert (2) drives the sliding block (3) to move relative to the fixed die frame and the fixed die insert (1), and meanwhile, the sliding block (3) generates transverse displacement along the inclined guide post (4).
2. The fixed die slide block core pulling mechanism of the injection mold according to claim 1, characterized in that a locking module (6) is further arranged in the fixed die insert (1), one end of the locking module (6) is fixed with the fixed die insert (1), the other end of the locking module is provided with a sliding guide inclined surface (61), the slide block (3) is provided with a matching inclined surface (33), the inclination angle of the sliding guide inclined surface (61) is the same as that of the matching inclined surface (33), and the sliding guide inclined surface (61) is tightly attached to the matching inclined surface (33).
3. The fixed die slide core pulling mechanism of the injection mold according to claim 2, characterized in that a wear plate (7) is obliquely arranged in the lock module (6), one side surface of the wear plate (7) is coplanar with the sliding guide inclined surface (61), and one side surface of the wear plate (7) is tightly attached to the matching inclined surface (33).
4. The fixed die slide block core pulling mechanism of the injection mold according to claim 1, characterized in that a limit screw (9) is arranged in the fixed die, a limit hole (21) is formed in the fixed die movable insert (2), the limit hole (21) comprises a large hole and a small hole, a limit step (22) is formed between the large hole and the small hole, the cap head of the limit screw (9) is positioned in the large hole and can move up and down in the large hole, the rod part of the limit screw (9) penetrates through the large hole and the small hole and is fixed with the fixed die insert (1), and a certain distance exists between the limit step (22) and the cap head of the limit screw (9) during die assembly.
5. The fixed die slide block core pulling mechanism of the injection mold according to claim 1, characterized in that a forming block (32) for forming the product in an inverted manner is arranged on the slide block (3), and the forming block (32) penetrates through the fixed die movable insert (2) and the fixed die insert (1).
6. The fixed die slide core pulling mechanism of the injection mold according to claim 1, characterized in that the spring (5) is a nitrogen spring.
7. The fixed die slide block core pulling mechanism of the injection mold according to claim 1, characterized in that a core pulling groove (11) is formed in the fixed die insert (1), the fixed die movable insert (2) is positioned in the core pulling groove (11) and can move up and down in the core pulling groove (11), a containing cavity is formed in the fixed die movable insert (2), and the slide block (3) is positioned in the containing cavity and can move left and right in the containing cavity.
8. The fixed die slide block core pulling mechanism of the injection mold according to any one of claims 4 to 7, characterized in that a guide post (8) is further arranged in the fixed die insert (1), one end of the guide post (8) is connected with the fixed die frame, the other end of the guide post (8) penetrates through the fixed die movable insert (2) and is fixed with the fixed die, and the fixed die insert (1) and the fixed die movable insert (2) can move up and down relative to the guide post (8).
9. The fixed die slide block core pulling mechanism of the injection mold according to claim 8, characterized in that a guide sleeve (10) is further sleeved on the guide post (8), and the guide sleeve (10) is fixed in the fixed die insert (1).
10. The fixed die slide block core pulling mechanism of the injection mold according to claim 8, characterized in that the spring (5), the limit screw (9) and the guide post (8) are provided with two groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289903.0A CN114851490A (en) | 2022-03-23 | 2022-03-23 | Fixed die slide block core pulling mechanism of injection mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210289903.0A CN114851490A (en) | 2022-03-23 | 2022-03-23 | Fixed die slide block core pulling mechanism of injection mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114851490A true CN114851490A (en) | 2022-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210289903.0A Pending CN114851490A (en) | 2022-03-23 | 2022-03-23 | Fixed die slide block core pulling mechanism of injection mold |
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| CN (1) | CN114851490A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205097474U (en) * | 2015-10-08 | 2016-03-23 | 中山市标一模具科技有限公司 | Hierarchical demoulding mechanism |
| CN106079298A (en) * | 2016-08-04 | 2016-11-09 | 江苏文光模具技术有限公司 | A kind of pop-up type slide block mechanism of injection mold |
| CN113103512A (en) * | 2020-10-11 | 2021-07-13 | 罗文俊 | Four-way pipe joint die mechanism |
| CN217622010U (en) * | 2022-03-23 | 2022-10-21 | 浙江台州美多模具有限公司 | Fixed die slide block core pulling mechanism of injection mold |
-
2022
- 2022-03-23 CN CN202210289903.0A patent/CN114851490A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205097474U (en) * | 2015-10-08 | 2016-03-23 | 中山市标一模具科技有限公司 | Hierarchical demoulding mechanism |
| CN106079298A (en) * | 2016-08-04 | 2016-11-09 | 江苏文光模具技术有限公司 | A kind of pop-up type slide block mechanism of injection mold |
| CN113103512A (en) * | 2020-10-11 | 2021-07-13 | 罗文俊 | Four-way pipe joint die mechanism |
| CN217622010U (en) * | 2022-03-23 | 2022-10-21 | 浙江台州美多模具有限公司 | Fixed die slide block core pulling mechanism of injection mold |
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