CN216465956U - Core-pulling assembly for outer side pipe sleeve of thin flanging injection molding part - Google Patents
Core-pulling assembly for outer side pipe sleeve of thin flanging injection molding part Download PDFInfo
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- CN216465956U CN216465956U CN202122776490.2U CN202122776490U CN216465956U CN 216465956 U CN216465956 U CN 216465956U CN 202122776490 U CN202122776490 U CN 202122776490U CN 216465956 U CN216465956 U CN 216465956U
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- sliding block
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Abstract
The utility model relates to a core-pulling assembly for an outer side pipe sleeve of a thin flanging injection molding part, which comprises a rear template, a rear mold insert, a sliding block assembly, a side forming block, an ejector pin plate, an ejector pin body and a shovel machine, wherein a sliding block backspacing spring is connected between the sliding block assembly and the rear mold insert, the sliding block backspacing spring exerts elasticity on the sliding block assembly, the ejector pin backspacing spring is arranged between the ejector pin plate and the sliding block assembly, the ejector pin plate is provided with an ejector pin, the sliding block assembly is provided with an inclined guide hole, the shovel machine is provided with an inclined guide pillar, the inclined guide hole is close to the side forming block towards one end of the front mold than the other end of the front mold, the shovel machine is provided with a guide groove, and the guide groove comprises a guide part and an avoiding part. According to the ejector pin structure, the ejector pin body does not return along with the side forming block at the initial stage of demolding due to the matching of the ejector pin and the guide groove on the ejector pin plate, the ejection effect on the thin flanging is achieved, the thin flanging is effectively prevented from being bent by the side forming block, and the ejector pin plate returns at the later stage of demolding due to the ejector pin return spring.
Description
Technical Field
The utility model relates to an injection mold, in particular to a loose core assembly for a pipe sleeve on the outer side of a thin flanging injection molding part.
Background
When the plastic plate provided with the thin flanging is injected through an injection mold, the flanging is easy to be bent due to the large mold sticking force during demolding. When the outer side of the thin flanging is provided with the protrusions, the die bonding force is further increased, and the stretch bending probability of the thin flanging is improved.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model aims to provide a core-pulling assembly for an outer pipe sleeve of a thin flanging injection molding part.
The technical scheme adopted by the utility model for solving the technical problems is as follows: a core-pulling assembly for an outer side pipe sleeve of a thin flanging injection molding piece comprises a rear template, a rear die insert arranged on the rear template, and an ejection core-pulling assembly arranged on the rear template and arranged on the side surface of the rear die insert, wherein the ejection core-pulling assembly comprises a sliding block assembly in sliding connection with the rear template, a side forming block arranged on one side of the sliding block assembly, which faces towards the rear die insert, an ejector plate in sliding connection with the sliding block assembly, an ejector pin body arranged on the ejector plate and extending along the sliding direction of the ejector pin plate, and a shovel machine arranged on a front die and matched with the sliding block assembly, the sliding direction of the ejector pin plate is parallel to the sliding direction of the sliding block assembly, a sliding block backspacing spring is connected between the sliding block assembly and the rear die insert, and the sliding block backspacing spring exerts elastic force deviating from the position between the rear die insert on the sliding block assembly, an ejector pin returning spring is arranged between the ejector pin plate and the sliding block component, the ejector pin returning spring applies elasticity deviating from the rear die insert block to the ejector pin plate, the ejector plate is provided with an ejector rod extending in a direction deviating from the direction of the rear die insert, the ejector rod penetrates through the sliding block assembly, the sliding block component is provided with an inclined guide hole, the shovel machine is provided with an inclined guide post matched with the inclined guide hole, the oblique guide hole extends from the slider assembly toward a side of the front mold to a side of the slider assembly away from the front mold, the inclined guide hole is towards one end of the front mould and is close to the side of the other end of the front mould, the shovel machine is provided with a guide groove matched with the ejector rod, the guiding groove comprises a guiding part and an inclined avoiding part, wherein the guiding part extends along the retraction direction of the shovel machine, the avoiding part is connected with one end, deviating from the front mold, of the guiding part, and the avoiding part is far away from the side forming block from one end, deviating from the front mold, of the front mold and is far away from the other end of the front mold.
Through ejector pin and the guiding groove cooperation on the thimble board in the above-mentioned design for drawing of patterns initial stage thimble body does not roll back along the side shaping piece, plays ejecting effect to thin turn-ups, effectively avoids the thin turn-ups of side shaping piece stretch bending, adopts the thimble to roll back the spring and realizes that drawing of patterns later stage thimble board rolls back, rolls back smoothly of spring and oblique guide pillar combined action realization side shaping piece through the slider and rolls back simple structure.
As a further improvement of the design, the thimble back-off spring and the slide block back-off spring are both rectangular springs, and have long stroke, small volume and small directionality.
As a further improvement of the design, the slide block assembly comprises a main slide block and an auxiliary slide block, wherein the main slide block is in sliding connection with the rear template, the auxiliary slide block is arranged on the main slide block, a thimble groove is formed in the main slide block, a thimble plate is arranged in the thimble groove, and the auxiliary slide block is used for sealing an opening at one side of the thimble groove, which is away from the side forming block. The sliding block assembly is convenient for the installation of the ejector plate by adopting the matching of the main sliding block and the auxiliary sliding block, the ejector groove is convenient for avoiding the ejector plate, and the volume of the mechanism is reduced.
As a further improvement of the design, one side of the auxiliary sliding block, which is far away from the side forming block, and the shovel machine are provided with guide inclined planes which are matched with each other, wherein the guide inclined planes are parallel to the inclined guide columns. The guide inclined plane is convenient for drive slider assembly compound die, reduces oblique guide pillar load.
As a further improvement of the design, one end of the ejector rod matched with the guide groove is a ball head. And the friction damping of the ejector rod is reduced.
As a further improvement of the design, the sliding block assembly is provided with a guide pillar matched with the ejector plate, so that the sliding precision and the smoothness of the ejector plate are improved.
The utility model has the beneficial effects that: according to the ejector pin structure, the ejector pin body does not return along with the side forming block at the initial stage of demolding due to the matching of the ejector pin and the guide groove on the ejector pin plate, the ejection effect on the thin flanging is achieved, the thin flanging is effectively prevented from being bent by the side forming block, the ejector pin plate returns at the later stage of demolding due to the adoption of the ejector pin return spring, the smooth return of the side forming block is achieved due to the combined action of the slide block return spring and the inclined guide pillar, and the structure is simple.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is a schematic overall perspective view of the present invention.
Fig. 2 is a perspective view of the side molding block demolding mechanism of the present invention.
FIG. 3 is a schematic cross-sectional view of the thimble body of the present invention.
Figure 4 is a schematic cross-sectional view of the present invention along the axis of the guide post.
In the drawing, 1 is a rear template, 2 is an ejector pin retraction spring, 3 is a side forming block, 4 is a rear die insert, 5 is a sliding block component, 6 is an inclined guide post, 7 is a shovel machine, 8 is an ejector pin plate, 9 is a guide inclined surface, 10 is an inclined guide hole, 11 is an auxiliary sliding block, 12 is an ejector pin body, 13 is a main sliding block, 14 is a guide post, 15 is an ejector pin, 16 is a guide part, 17 is an avoiding part, 18 is a sliding block retraction spring, and 19 is an ejector pin groove.
Detailed Description
The present invention will now be described in detail with reference to the drawings and specific embodiments, wherein the exemplary embodiments and descriptions are provided only for the purpose of illustrating the present invention and are not to be construed as limiting the present invention.
Example (b): a core-pulling assembly for an outer side pipe sleeve of a thin flanging injection molding part comprises a rear template 1, a rear template insert 4 arranged on the rear template 1, and an ejection core-pulling assembly arranged on the side surface of the rear template 1 of the rear template insert 4, wherein the ejection core-pulling assembly comprises a slider assembly 5 in sliding connection with the rear template 1, a side forming block 3 arranged on one side of the slider assembly 5 facing the rear template insert 4, an ejector plate 8 in sliding connection with the slider assembly 5, an ejector pin body 12 arranged on the ejector plate 8 and extending along the sliding direction of the ejector plate 8, and a shovel 7 arranged on a front mold and matched with the slider assembly 5, the sliding direction of the ejector plate 8 is parallel to the sliding direction of the slider assembly 5, a slider backspacing spring 18 is connected between the slider assembly 5 and the rear template insert 4, and the slider backspacing spring 18 exerts elastic force on the slider assembly 5 deviating from the rear template insert 4, an ejector pin returning spring 2 is arranged between the ejector pin plate 8 and the slide block assembly 5, the ejector pin returning spring 2 applies elasticity deviating from the rear die insert 4 to the ejector pin plate 8, the ejector pin plate 8 is provided with an ejector rod 15 extending in a direction deviating from the rear die insert 4, the ejector rod 15 penetrates through the slide block assembly 5, the slide block assembly 5 is provided with an inclined guide hole 10, the shovel 7 is provided with an inclined guide post 6 matched with the inclined guide hole 10, the inclined guide hole 10 extends from one side of the slide block assembly 5 facing the front die to the side of the slide block assembly 5 deviating from the front die, one end of the inclined guide hole 10 facing the front die is close to the forming block 3 than the other end, the shovel 7 is provided with a guide groove matched with the ejector rod 15, the guide groove comprises a guide part 16 extending in the returning direction of the shovel 7 and an inclined avoiding part 17, and the avoiding part 17 is connected with one end of the guide part 16 deviating from the front die, the avoidance part 17 is far away from the side forming block 3 from one end of the front mould than the other end.
Through ejector pin 15 and the guiding groove cooperation on the thimble board 8 in the above-mentioned design for drawing of patterns initial stage thimble body 12 does not roll back along side one-tenth mould piece 3, plays ejecting effect to thin turn-ups, effectively avoids side one-tenth mould piece 3 stretch bending thin turn-ups, adopts thimble backspacing spring 2 to realize drawing of patterns later stage thimble board 8 and rolls back, rolls back smooth of spring 18 and the 6 combined action realization side one-tenth mould piece 3 through the slider and rolls back simple structure.
As a further improvement of the design, the thimble back-off spring 2 and the slide block back-off spring 18 are both rectangular springs, and have long stroke, small volume and small directionality.
As a further improvement of the design, the slider assembly 5 includes a main slider 13 connected with the rear template in a sliding manner, and an auxiliary slider 11 disposed on the main slider 13, the main slider 13 is provided with an thimble groove 19, the thimble plate 8 is disposed in the thimble groove 19, and the auxiliary slider 11 is used for closing an opening on one side of the thimble groove 19 departing from the side forming block 3. The slide block assembly 5 is convenient for the installation of the ejector plate 8 by adopting the matching of the main slide block 13 and the auxiliary slide block 11, the ejector groove 19 is convenient for avoiding the ejector plate 8, and the volume of the mechanism is reduced.
As a further improvement of this design, a guiding inclined plane 9 which is matched with each other is arranged on the side of the auxiliary sliding block 11 which is away from the side forming block 3 and the shovel machine 7, and the guiding inclined plane 9 is parallel to the inclined guide post 6. The guide inclined plane 9 is convenient for driving the slide block component 5 to be matched and reducing the load of the inclined guide post 6.
As a further improvement of the design, one end of the ejector rod 15 matched with the guide groove is a ball head. The ram 15 friction damping is reduced.
As a further improvement of the design, the slide block assembly 5 is provided with a guide post 14 matched with the ejector plate 8, so that the sliding precision and the smoothness of the ejector plate 8 are improved.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (6)
1. A tube sleeve core-pulling assembly used at the outer side of a thin flanging injection molding piece comprises a rear template, a rear die insert arranged on the rear template, and an ejection core-pulling assembly arranged on the rear template and arranged at the side surface of the rear die insert, and is characterized in that the ejection core-pulling assembly comprises a slide block assembly in sliding connection with the rear template, a side forming block arranged at one side of the slide block assembly, which faces towards the rear die insert, an ejector plate in sliding connection with the slide block assembly, an ejector pin body arranged on the ejector plate and extending along the sliding direction of the ejector pin plate, and a shovel arranged on a front die and matched with the slide block assembly, wherein the sliding direction of the ejector pin plate is parallel to the sliding direction of the slide block assembly, a slide block retraction spring is connected between the slide block assembly and the rear die insert, and the slide block retraction spring exerts the elasticity deviating from the elasticity between the rear die insert on the slide block assembly, an ejector pin returning spring is arranged between the ejector pin plate and the sliding block component, the ejector pin returning spring applies elasticity deviating from the rear die insert block to the ejector pin plate, the ejector plate is provided with an ejector rod extending in a direction deviating from the direction of the rear die insert, the ejector rod penetrates through the sliding block assembly, the sliding block component is provided with an inclined guide hole, the shovel machine is provided with an inclined guide post matched with the inclined guide hole, the oblique guide hole extends from the slider assembly toward a side of the front mold to a side of the slider assembly away from the front mold, the inclined guide hole is towards one end of the front mould and is close to the side of the other end of the front mould, the shovel machine is provided with a guide groove matched with the ejector rod, the guiding groove comprises a guiding part and an inclined avoiding part, wherein the guiding part extends along the retraction direction of the shovel machine, the avoiding part is connected with one end, deviating from the front mold, of the guiding part, and the avoiding part is far away from the side forming block from one end, deviating from the front mold, of the front mold and is far away from the other end of the front mold.
2. The loose core assembly for the outer pipe sleeve of the thin flanging injection molded part according to claim 1, wherein the ejector pin back-off spring and the sliding block back-off spring are rectangular springs.
3. The outer pipe sleeve core-pulling assembly for the thin flanging injection molding part according to claim 1, wherein the sliding block assembly comprises a main sliding block and an auxiliary sliding block, the main sliding block is in sliding connection with the rear template, the auxiliary sliding block is arranged on the main sliding block, an ejector pin groove is formed in the main sliding block, the ejector pin plate is arranged in the ejector pin groove, and the auxiliary sliding block is used for closing an opening of the ejector pin groove, which is away from the side forming block.
4. The outer side pipe sleeve core-pulling assembly for the thin flanging injection-molded part according to claim 3, wherein a matched guide inclined surface is arranged on one side of the auxiliary sliding block, which is far away from the side forming block, and the shovel machine, and the guide inclined surface is parallel to the inclined guide post.
5. The outer pipe sleeve core-pulling assembly for the thin flanging injection-molded part according to claim 1, wherein one end of the ejector rod matched with the guide groove is a ball head.
6. The outside pipe sleeve core-pulling assembly for the thin flanging injection-molded part according to claim 3, wherein the sliding block assembly is provided with a guide pillar matched with the ejector plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122776490.2U CN216465956U (en) | 2021-11-15 | 2021-11-15 | Core-pulling assembly for outer side pipe sleeve of thin flanging injection molding part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122776490.2U CN216465956U (en) | 2021-11-15 | 2021-11-15 | Core-pulling assembly for outer side pipe sleeve of thin flanging injection molding part |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216465956U true CN216465956U (en) | 2022-05-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122776490.2U Active CN216465956U (en) | 2021-11-15 | 2021-11-15 | Core-pulling assembly for outer side pipe sleeve of thin flanging injection molding part |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216465956U (en) |
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2021
- 2021-11-15 CN CN202122776490.2U patent/CN216465956U/en active Active
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