Back mold ejector plate realizes front mold forming slider core-pulling mold structure

Abstract

The utility model discloses a back mould elastic plate realizes front mould forming slider core-pulling mould structure, including front mould and back mould and the front mould forming slider in front mould, its characterized in that: be equipped with the push plate between the front mould and back mould, be equipped with the time delay separation structure between push plate and back mould, be equipped with the switching core-pulling structure between the front mould and back mould, and the front mould can be moved by switching core-pulling structure and realize core-pulling to drive the front mould forming slider, when opening the mould, push plate can move a certain distance with the front mould again and separate through the time delay separation structure. The utility model increases the push plate, and the product is formed through the front mould and push plate, so when opening the mould, the back mould can separate with the front mould and push plate, at this moment, realize core-pulling to drive the front mould forming slider and move through the switching core-pulling structure, after core-pulling succeeds, push plate separates with the front mould again, thereby realizes core-pulling while opening the mould, thereby shortens the injection moulding production time, thereby also saves production cost.

Description

Technical Field

[0001] This utility model relates to an injection mold, and more particularly to a rear mold spring plate realizing a front mold forming slider core-pulling mold structure. Background Technology

[0002] In the injection molding process, it is common to encounter products with holes on the side that need to be injection molded using a front mold forming slider. Therefore, before opening the mold, the front mold forming slider must be removed from the product hole, a process known as core pulling.

[0003] The traditional solution uses a hydraulic cylinder for core pulling. Before the front mold opens, the hydraulic cylinder removes the front mold forming slider from the product hole, and then the front mold moves to open. However, the hydraulic cylinder core pulling and the front mold opening cannot be performed simultaneously, which increases the injection molding production time and thus increases production costs.

[0004] Another traditional approach is to use a front mold spring plate to achieve core pulling of the front mold forming slider before mold opening. Although this method allows core pulling and front mold opening to occur simultaneously, the front mold has a hot runner system, and it is difficult to simultaneously open the hot runner system. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, this utility model provides a rear mold spring plate to realize the front mold forming slider core pulling mold structure.

[0006] The technical solution adopted by this utility model to solve its technical problem is: A rear mold spring plate realizes the core-pulling mold structure of the front mold forming slider, including a front mold and a rear mold, and a front mold forming slider located in the front mold. The key feature is that: a push plate is provided between the front mold and the rear mold, a delayed separation structure is provided between the push plate and the rear mold, and a transfer core-pulling structure is provided between the front mold and the rear mold. The front mold can drive the front mold forming slider to move through the transfer core-pulling structure to realize core pulling. When the mold is opened, the push plate can move a certain distance together with the front mold through the delayed separation structure and then separate.

[0007] The time-delay separation structure includes an elastic element and a time-delay screw disposed between the push plate and the rear mold. The rear mold is provided with a limiting hole, and the bottom of the limiting hole is provided with a through hole. The head of the time-delay screw is located in the limiting hole and can move inside and abut against the bottom of the limiting hole. The shank of the time-delay screw passes through the through hole and is fixed to the push plate.

[0008] The core-pulling mechanism includes a shovel, a first adapter slider, and a second adapter slider. The shovel is connected to the first adapter slider via a first inclined guide structure. The first adapter slider and the second adapter slider are connected via a second inclined guide structure. The second adapter slider is connected to the front mold forming slider via a third inclined guide structure. The shovel is fixed to the rear mold.

[0009] It also includes a flow channel plate, in which a groove is provided, and the adapter slider is located in the groove and can slide along the groove.

[0010] The inner wall of the slide is provided with a side strip, and the side wall of the transition slider is provided with a side groove that cooperates with the side strip.

[0011] The front mold is provided with a sliding hole, and the second adapter slider slides in cooperation with the sliding hole.

[0012] The inclined guide structure includes a T-slot on the shovel and a T-block 14 on the adapter slider, wherein the T-slot and the T-block 14 are in sliding engagement.

[0013] The second inclined guide structure includes a second T-slot on the first adapter slider and a second T-block 15 on the second adapter slider, wherein the second T-slot and the second T-block 15 are in sliding engagement.

[0014] The oblique guide structure three includes a T-shaped block three 16 disposed on the transition slider two and a T-shaped groove three disposed on the front mold forming slider, wherein the T-shaped groove three and the T-shaped block three 16 are in sliding fit.

[0015] The flow channel plate is provided with a support block 17, and the support block 17 is provided with a support groove. The end of the shovel is slidably engaged with the support groove.

[0016] The beneficial effects of this utility model are: This utility model adds a push plate, and the product is formed by the front mold and the push plate. Therefore, when the mold is opened, the rear mold can be separated from the front mold and the push plate. At this time, the core pulling is achieved by using the transfer core pulling structure to drive the front mold forming slider to move. After the core pulling is successful, the push plate is separated from the front mold, thereby realizing the core pulling at the same time as the mold is opened, which shortens the injection molding production time and saves production costs. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] Figure 1 This is an overall structural view of the mold; Figure 2 This is a view of the internal structure of the mold; Figure 3 This is a cross-sectional structural view of the mold; Figure 4 This is a cross-sectional view of another location on the mold. Figure 5 This is an overall structural view of the structure; Figure 6 This is a cross-sectional structural view of the structure; Figure 7 This is a cross-sectional view of the structure from another direction. Detailed Implementation

[0019] The advantages and features of this disclosure, as well as its implementation methods, will be illustrated by the following embodiments described with reference to the accompanying drawings. However, this disclosure may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be comprehensive and complete, and will fully convey the scope of this disclosure to those skilled in the art. Furthermore, this disclosure is limited only by the scope of the claims.

[0020] The shapes, dimensions, scales, angles, and numbers disclosed in the accompanying drawings used to describe embodiments of this disclosure are merely examples, and therefore this disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, detailed descriptions of relevant known functions or configurations will be omitted where it is determined that such detailed descriptions would unnecessarily obscure the focus of this disclosure. Where the terms “comprising,” “having,” and “including” are used in this specification, additional components may be added unless “only” is used. Unless otherwise indicated, singular terms may include plural forms.

[0021] When interpreting components, even if not explicitly described, the components are understood to include a range of tolerances.

[0022] When describing positional relationships, such as "on," "above," "below," and "adjacent to," one or more parts may be arranged between two other parts unless "immediately following" or "directly" is used.

[0023] When describing temporal relationships, such as when time sequence is described as “after,” “following,” “next,” and “before,” discontinuous cases may be included unless “exactly” or “directly” is used.

[0024] It should be understood that although the terms “first,” “second,” etc., may be used herein to describe various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from other elements. For example, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element, without departing from the scope of this disclosure.

[0025] As will be fully understood by those skilled in the art, the features of the different embodiments of this disclosure may be coupled or combined with each other in part or in whole, and may cooperate with each other and be technically driven in various ways. The embodiments of this disclosure may be implemented independently of each other, or may be implemented together in an interdependent relationship.

[0026] Reference Figures 1 to 7This utility model discloses a mold structure for a front mold forming slider core-pulling device using a rear mold spring plate, including a front mold 1 and a rear mold 2, and a front mold forming slider 3 located in the front mold 1. A push plate 4 is provided between the front mold 1 and the rear mold 2, and a forming cavity is located between the front mold 1 and the push plate 4. A delayed separation structure is provided between the push plate 4 and the rear mold 2. A transfer core-pulling structure is provided between the front mold 1 and the rear mold 2. When the mold is opened, the push plate 4 can move a certain distance together with the front mold 1 through the delayed separation structure. Within this distance, the front mold 1 drives the front mold forming slider 3 to move through the transfer core-pulling structure to achieve core pulling. After the core pulling is completed, the push plate 4 separates from the front mold 1 through the delayed separation structure, thereby achieving the final mold opening.

[0027] As shown in the figure, the delayed separation structure includes an elastic element (not shown in the figure) and a delayed screw 5 disposed between the push plate 4 and the rear mold 2. The rear mold 2 is provided with a limiting hole 6, and the bottom of the limiting hole 6 is provided with a through hole. The head 8 of the delayed screw 5 is located in the limiting hole 6 and can move inward to abut against the bottom of the limiting hole 6. The shank 7 of the delayed screw 5 passes through the through hole and is fixed to the push plate 4. The elastic element is preferably a compression spring. When the mold is closed, the compression spring is in a compressed state, with one end abutting against the rear mold 2 and the other end abutting against the push plate 4. Therefore, when the mold is opened, the front mold 1 moves, and the compression spring will push the push plate 4 tightly. The ejector plate 4 moves together with the front mold 1 to prevent damage to the product caused by mold opening before the core pulling is completed. When the ejector plate 4 moves, the delay screw 5 also moves with the ejector plate 4. Because the length of the limiting hole 6 is longer than the length of the screw head 8, the screw head 8 will move a certain distance in the limiting hole 6 until it abuts against the bottom of the limiting hole 6, thereby limiting the position of the ejector plate 4. This distance is also the distance that the ejector plate 4 moves together with the front mold 1. At the same time, the front mold 1 drives the front mold forming slider 3 to move through the core pulling structure to achieve core pulling. After the core pulling is completed, the ejector plate 4 will not move due to the restriction of the screw head 8 and the limiting hole 6, thus separating from the front mold 1.

[0028] As shown in the figure, the adapter core-pulling structure includes a shovel 9, an adapter slider one 10, and an adapter slider two 11. The shovel 9 and the adapter slider one 10 are connected by an inclined guide structure one. The adapter slider one and the adapter slider two 11 are connected by an inclined guide structure two. The adapter slider two 11 and the front mold forming slider 3 are both connected by an inclined guide structure three. The shovel 9 is fixed to the rear mold 2. It also includes a flow channel plate 12, in which a groove 13 is provided. The first adapter slider 10 is located in the groove 13 and can slide along the groove 13. The inner wall of the groove 13 is provided with a side strip. The side wall of the first adapter slider 10 is provided with a side groove that cooperates with the side strip. Because the space of the front mold 1 is limited, the first adapter slider 10 is located in the groove 13 of the flow channel plate 12. The front mold 1 is provided with a sliding hole, and the second adapter slider 11 slides in cooperation with the sliding hole.

[0029] When the front mold 1 moves, the front mold 1 moves vertically upward. The front mold 1 will drive the first adapter slider 10, the second adapter slider 11, and the front mold forming slider 3 to move upward together. However, under the action of the first inclined guide structure, the first adapter slider 10 will also move horizontally towards the shovel 9 along the slide groove 13. The first adapter slider 10 will then cause the second adapter slider 11 to move vertically upward along the slide hole through the second inclined guide structure. The second adapter slider 11 can cause the front mold forming slider 3 to move in the direction of the second adapter slider 11 through the third inclined guide structure, thereby realizing core pulling. Of course, there is also a mold hole in the front mold 1, and the front mold forming slider 3 slides with the mold hole.

[0030] As shown in the figure, specifically: the first inclined guide structure includes a T-slot 1 on the shovel 9 and a T-block 14 on the adapter slider 10, with the T-slot 1 and T-block 14 in sliding engagement; the second inclined guide structure includes a T-slot 2 on the adapter slider 10 and a T-block 2 15 on the adapter slider 2 11, with the T-slot 2 and T-block 2 15 in sliding engagement; the third inclined guide structure includes a T-block 3 16 on the adapter slider 2 11 and a T-slot 3 on the front mold forming slider 3, with the T-slot 3 and T-block 3 16 in sliding engagement. In the above, the T-slots 1, 2, and 3 are all inclined.

[0031] As shown in the figure, a support block 17 is fixed to the flow channel plate 12 by screws. The support block 17 is provided with a support groove 18. The end of the shovel 9 is slidably engaged with the support groove 18. In this way, the end of the shovel 9 is also supported to prevent the shovel 9 from deforming under force. Moreover, the surfaces of the support groove 18 and the end of the shovel 9 in contact with each other are inclined surfaces to avoid collisions due to inaccurate dimensions during mold closing.

[0032] The above provides a detailed description of a rear mold spring plate realizing a front mold forming slider core-pulling mold structure provided by the embodiments of this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A rear mold spring plate realizes a front mold forming slider core-pulling mold structure, including a front mold and a rear mold, and a front mold forming slider located in the front mold, characterized in that: A push plate is provided between the front mold and the rear mold, and a delayed separation structure is provided between the push plate and the rear mold. A transfer core-pulling structure is provided between the front mold and the rear mold, and the front mold can drive the front mold forming slider to move through the transfer core-pulling structure to achieve core pulling. When the mold is opened, the push plate can move a certain distance together with the front mold through the delayed separation structure and then separate.

2. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 1, characterized in that: The time-delay separation structure includes an elastic element and a time-delay screw disposed between the push plate and the rear mold. The rear mold is provided with a limiting hole, and the bottom of the limiting hole is provided with a through hole. The head of the time-delay screw is located in the limiting hole and can move inside and abut against the bottom of the limiting hole. The shank of the time-delay screw passes through the through hole and is fixed to the push plate.

3. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 1, characterized in that: The core-pulling mechanism includes a shovel, a first adapter slider, and a second adapter slider. The shovel is connected to the first adapter slider via a first inclined guide structure. The first adapter slider and the second adapter slider are connected via a second inclined guide structure. The second adapter slider is connected to the front mold forming slider via a third inclined guide structure. The shovel is fixed to the rear mold.

4. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 3, characterized in that: It also includes a flow channel plate, in which a groove is provided, and the adapter slider is located in the groove and can slide along the groove.

5. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 4, characterized in that: The inner wall of the slide is provided with a side strip, and the side wall of the transition slider is provided with a side groove that cooperates with the side strip.

6. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 3, characterized in that: The front mold is provided with a sliding hole, and the second adapter slider slides in cooperation with the sliding hole.

7. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 3, characterized in that: The inclined guide structure includes a T-slot on the shovel and a T-block on the adapter slider, wherein the T-slot and the T-block are in sliding engagement.

8. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 3, characterized in that: The second inclined guide structure includes a second T-slot on the first adapter slider and a second T-block on the second adapter slider, wherein the second T-slot and the second T-block are in sliding engagement.

9. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 3, characterized in that: The oblique guide structure three includes a T-shaped block three disposed on the transition slider two and a T-shaped groove three disposed on the front mold forming slider three, wherein the T-shaped groove three and the T-shaped block three slide in fit.

10. The rear mold spring plate realizing the front mold forming slider core-pulling mold structure according to claim 4, characterized in that: The flow channel plate is provided with a support block, and the support block is provided with a support groove. The end of the shovel is slidably engaged with the support groove.

Images