Tunnel sliding block core-pulling structure of front mold of mold

Abstract

The utility model discloses a front mold tunnel sliding block core-pulling structure of a mold, which comprises an insert pin, a mold plate I and a mold plate II, and is characterized in that the mold plate I is provided with a sliding hole and an elastic piece, the insert pin is positioned in the sliding hole and can be in sliding fit with the sliding hole, the end part of the insert pin is provided with a connecting block, the mold plate II is provided with a shoveling machine, and the shoveling machine is connected with the elastic piece. A guide locking surface is arranged on the shovel machine, the connecting block is in close contact with the guide locking surface under the action of the elastic piece, a conical surface is arranged at the end part of the insert pin, 1 / 2 of the conical angle of the conical surface is A, the A is 35-45 degrees, and an angle B formed by the guide locking surface and the central axis of the insert pin is smaller than the angle A by 1O-3O. Under the condition that the angle condition is met, the core pulling action and the mold opening action can be synchronously carried out, the core pulling action does not need to be completed before mold opening, the action is reliable, the mold opening time is shortened, the structure is simple, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to a mould, in particular to a core pulling structure of a front mould tunnel slide block of the mould. Background Art

[0002] When injecting some plastic products that require core pulling in the front mold, the core is usually pulled first, and then the mold is opened. There are generally two ways:

[0003] One method is to add a front mold spring plate, which is separated first, and the front mold spring plate drives the slider to move. The slider drives the insert pin to be pulled out of the product through the inclined core-pulling structure, and then the template 1 and the template 2 are separated from the mold;

[0004] Another way is to add a hydraulic cylinder, which directly drives the pin to be pulled out of the product, and then separates the template 1 and the template 2 from the mold;

[0005] The traditional solution requires the front mold spring plate to be parted for tunnel core pulling or the oil cylinder to perform tunnel core pulling first. The above method increases the mold opening mechanism and the mold opening action, which not only prolongs the mold opening time and reduces the production efficiency, but also increases the production cost. Utility Model Content

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a core pulling structure of a front mold tunnel slider of a mold.

[0007] The technical solution adopted by the utility model to solve its technical problems is:

[0008] A mold front mold tunnel slider core pulling structure, including a pin, a template one and a template two, characterized in that: the template one is provided with a sliding hole and an elastic member, the pin is located in the sliding hole and can slide with the sliding hole, the end of the pin is provided with a connecting block, the template two is provided with a shovel, the shovel is provided with a guide locking surface, the connecting block is kept in close contact with the guide locking surface through the action of the elastic member, the end of the pin is provided with a conical surface, 1 / 2 of the cone angle of the conical surface is A, and A is 35 O -45 O , the angle B formed by the guide locking surface and the central axis of the pin is smaller than the angle A: 1 O -3 O .

[0009] A guide ring is arranged in the sliding hole, and the inlay pin is slidably matched with the guide ring.

[0010] The template 1 is provided with an outer hole which is connected with the sliding hole, and the connecting block is slidably matched with the outer hole.

[0011] The elastic member is a spring, which is located in the outer hole, and one end of the spring abuts against the bottom of the outer hole and the other end of the spring abuts against the connecting block.

[0012] The connecting block is provided with a T-shaped groove, and the tail of the ejector pin is provided with a T-shaped block that cooperates with the T-shaped groove.

[0013] The lifter is provided with a wear-resistant plate, and the guiding and locking surface is arranged on the wear-resistant plate.

[0014] The first template is provided with an anti-lock strengthening block. The anti-lock strengthening block is fixed to the first template by screws and can lock the end of the lifter on the first template.

[0015] The anti-lock strengthening block is provided with a locking groove, and the end of the lifter is located in the locking groove.

[0016] The end of the lifter is provided with a wear-resistant block, and the anti-lock strengthening block is in contact with and presses against the wear-resistant block.

[0017] The first template is provided with a limiting plate, and the connecting block is provided with a limiting block that can abut against the limiting plate.

[0018] The beneficial effects of the present utility model are as follows: The core-pulling action of the present utility model is realized through the elasticity of the elastic member, and the core-pulling speed is controlled by the interaction between the lifter and the connecting block. When the end of the ejector pin is provided with a conical surface, and half of the cone angle of the conical surface is A, and A is 35 O -45 O , and the angle B formed by the guiding and locking surface and the central axis of the ejector pin is smaller than the angle A by: 1 O -3 O °, under the condition of meeting the above angle conditions, the core-pulling action can be synchronized with the mold-opening action, without the need to complete the core-pulling action before mold opening, and the action is reliable, reducing the mold-opening time. The above structure is simple and also reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following further illustrates the present utility model with reference to the drawings and embodiments.

[0020] Figure 1 is the structural view of the whole mold;

[0021] Figure 2 is the sectional structural view of the whole mold;

[0022] Figure 3 is Figure 2 the partial enlarged view at C of

[0023] Figure 4 is the moving structural view of the ejector pin;

[0024] Figure 5 is the structural view of the first template;

[0025] Figure 6It is the structural view of Template 2. Detailed implementation manners

[0026] The advantages, features, and implementation methods of the present disclosure will be clarified by the following implementation manners described with reference to the accompanying drawings. However, the present disclosure can be embodied in different forms and should not be construed as limited to the implementation manners set forth herein. On the contrary, these implementation manners are provided so that the present disclosure will be comprehensive and complete, and will fully convey the scope of the present disclosure to those skilled in the art. In addition, the present disclosure is only limited by the scope of the claims.

[0027] The shapes, sizes, ratios, angles, and numbers disclosed in the accompanying drawings used to describe the implementation manners of the present disclosure are only examples, so the present disclosure is not limited to the details shown. Throughout this specification, the same reference numerals refer to the same elements. In the following description, when the detailed description of related known functions or configurations is determined to unnecessarily obscure the focus of the present disclosure, the detailed description will be omitted. In the case of using "including", "having", and "comprising" described in this specification, unless "only" is used, other components can be added. Unless otherwise indicated, terms in the singular form can include the plural form.

[0028] When interpreting an element, although not explicitly described, the element is understood to include a margin of error.

[0029] When describing positional relationships, for example, when the positional relationship is described as "on...", "above...", "below...", and "adjacent to...", unless "immediately" or "directly" is used, one or more other parts can be arranged between two other parts.

[0030] When describing temporal relationships, for example, when the time sequence is described as "after...", "subsequently", "next", and "before...", unless "exactly" or "directly" is used, discontinuous cases can be included.

[0031] It should be understood that although the terms "first", "second", etc. can be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from other elements. For example, a first element can be referred to as a second element, and similarly, a second element can be referred to as a first element without departing from the scope of the present disclosure.

[0032] As can be fully understood by those skilled in the art, the features of different implementation manners of the present disclosure can be partially or fully coupled or combined with each other, and can cooperate with each other in various ways and be technically driven. The implementation manners of the present disclosure can be executed independently of each other, or can be executed together in a mutually dependent relationship.

[0033] Reference Figures 1 to 6 The utility model discloses a mold front mold tunnel slider core pulling structure, including a needle 1, a template 1 2 and a template 2 3, the template 1 2 is provided with a sliding hole 4 and an elastic member 5, the needle 1 is located in the sliding hole 4 and can slide with the sliding hole 4, the sliding hole 4 is connected with the molding cavity, so that the molding end of the needle 1 can be inserted into the molding cavity to participate in molding, the end of the needle 1 is provided with a connecting block 6, the template 2 3 is provided with a shovel 7, the shovel 7 is provided with a guide locking surface 8, the connecting block 6 is secured with the guide locking surface 8 by the action of the elastic member 5 Maintain close contact, of course, the connecting block 6 is also provided with a corresponding inclined surface in contact with the guide locking surface 8, so that the contact surface is large and relatively stable. Therefore, when the mold is opened, the template 2 3 is separated from the template 1 2 along the mold opening direction, and the injection molded product is on the template 2 3, so the shovel 7 and the injection molded product will move with the movement of the template 2 3, and the guide locking surface 8 will also move with the shovel 7. At this time, the connecting block 6 will move in accordance with the moving speed of the guide locking surface 8 through the action of the elastic member 5, and at the same time, the connecting block 6 drives the insert pin 1 to do core pulling movement in a direction perpendicular to the mold opening direction. When the mold is opened, whether the product will collide with the insert pin 1 is related to the angle A of the conical surface 9 at the end of the insert pin 1 and the moving speed of the insert pin 1; and the moving speed of the insert pin 1 is related to the angle B of the guide locking surface 8, so as long as the following conditions are met, 1 / 2 of the cone angle of the conical surface 9 is A, and A is 35 O -45 O The angle B between the guide locking surface 8 and the central axis of the insert pin 1 is smaller than the angle A: 1 O -3 O When the mold is opened, the product will not collide with the insert pin 1, and it can be ensured that the guide locking surface 8 can lock the insert pin 1 when the mold is closed. Thereby, the core pulling action can be performed synchronously with the mold opening action.

[0034] As shown in the figure, a guide ring 10 is provided in the sliding hole 4, and the insert pin 1 is slidably matched with the guide ring 10 to avoid serious wear of the insert pin 1. The guide ring 10 can be made of a copper sleeve or other softer materials.

[0035] As shown in the figure, the template 2 is provided with an outer hole 11 which penetrates the sliding hole 4, and the connecting block 6 is a column corresponding to the outer hole 11. The connecting block 6 is slidably matched with the outer hole 11, so that the movement of the connecting block 6 is guided and the movement will not deviate. Moreover, the elastic member 5 is a spring, and the spring is located in the outer hole 11, and one end of the spring is against the bottom of the outer hole 11 and the other end is against the connecting block 6.

[0036] Since the insert pin 1 needs to be replaced, a T-shaped groove 12 is provided on the connecting block 6, and a T-shaped block matching the T-shaped groove 12 is provided at the tail of the insert pin 1. With the above structure, the insert pin 1 can be easily separated from the connecting block 6 for replacement. Therefore, during the movement, the insert pin 1 and the connecting block 6 are integrated and do not slide relative to each other through the T-shaped block and the T-shaped groove 12.

[0037] As a preferred structure, a wear-resistant plate 13 is provided on the lifter 7, and the guiding and locking surface 8 is arranged on the wear-resistant plate 13. The wear-resistant plate 13 can extend the service life of the lifter 7.

[0038] As shown in the figure, an anti-lock reinforcing block 14 is provided on the first template 2. The anti-lock reinforcing block 14 is fixed to the first template 2 by screws and can lock the end of the lifter 7 on the first template 2. Since the bottom end of the lifter 7 is fixed on the second template 3, and the top end of the lifter 7 has to bear the pressure from the connecting block 6, the distance between the fixed point and the force-bearing point is relatively far, which is likely to cause the connecting block 6 not to be locked during mold closing. Therefore, an additional fixed point is added at the top end of the lifter 7 through the anti-lock reinforcing block 14, thereby improving the uniformity and stability of the force. To better lock the lifter 7, a locking groove is provided on the anti-lock reinforcing block 14, and the end of the lifter 7 is located in the locking groove. As a further structure, a wear-resistant block 15 is provided at the end of the lifter 7, and the anti-lock reinforcing block 14 is in contact with and presses the wear-resistant block 15, which can extend the service life of the lifter 7.

[0039] As shown in the figure, a limiting plate 16 is provided on the first template 2, and a limiting block 17 that can abut against the limiting plate 16 is provided on the connecting block 6, so as to prevent the connecting block 6 from slipping out of the outer hole 11 when being pressed by the elastic member 5.

[0040] The above has introduced in detail a front mold tunnel slider core-pulling structure of a mold provided by an embodiment of the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A mold front mold tunnel slider core pulling structure, including a pin, a template one and a template two, characterized in that: The template 1 is provided with a sliding hole and an elastic member, the insert pin is located in the sliding hole and can slide with the sliding hole, the end of the insert pin is provided with a connecting block, the template 2 is provided with a shovel, the shovel is provided with a guide locking surface, the connecting block is kept in close contact with the guide locking surface through the action of the elastic member, the end of the insert pin is provided with a conical surface, 1 / 2 of the cone angle of the conical surface is A, and A is 35 O -45 O , the angle B formed by the guide locking surface and the central axis of the pin is smaller than the angle A: 1 O -3 O .

2. The core pulling structure of the front mold tunnel slider of the mold according to claim 1 is characterized by: A guide ring is arranged in the sliding hole, and the inlay pin is slidably matched with the guide ring.

3. The core pulling structure of the front mold tunnel slider of the mold according to claim 1 is characterized by: The template 1 is provided with an outer hole which is connected with the sliding hole, and the connecting block is slidably matched with the outer hole.

4. The core pulling structure of the front mold tunnel slider of the mold according to claim 3 is characterized by: The elastic member is a spring, which is located in the outer hole, and one end of the spring abuts against the bottom of the outer hole and the other end of the spring abuts against the connecting block.

5. The core pulling structure of the front mold tunnel slider of the mold according to claim 1 is characterized by: The connecting block is provided with a T-shaped slot, and the tail of the inlay pin is provided with a T-shaped block matched with the T-shaped slot.

6. The core pulling structure of the front mold tunnel slider of the mold according to claim 1 is characterized by: The shovel is provided with a wear-resistant plate, and the guide locking surface is arranged on the wear-resistant plate.

7. The core pulling structure of the front mold tunnel slider of the mold according to claim 1 is characterized by: A counter-locking reinforcement block is provided on the template one, and the counter-locking reinforcement block is fixed to the template one by screws and can lock the end of the shovel on the template one.

8. The core pulling structure of the front mold tunnel slider of the mold according to claim 7, characterized in that: The anti-lock reinforcement block is provided with a locking groove, and the end of the shovel is located in the locking groove.

9. The core pulling structure of the front mold tunnel slider of the mold according to claim 7, characterized in that: A wear-resistant block is arranged on the end of the shovel, and the anti-lock reinforcement block contacts and extrude the wear-resistant block.

10. The core pulling structure of the front mold tunnel slider of the mold according to claim 1, characterized in that: The template 1 is provided with a limiting plate, and the connecting block is provided with a limiting block capable of abutting against the limiting plate.

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