Precise inclined guide core-pulling structure of injection mold

Abstract

The utility model discloses a precise inclined guide core-pulling structure of an injection mold, which comprises a front mold plate, a rear mold plate and a fixed plate, and is characterized in that an elastic piece for keeping the fixed plate and the front mold plate in a separated state is arranged between the fixed plate and the front mold plate, and a limiting structure for limiting the separation distance between the front mold plate and the fixed plate is arranged between the fixed plate and the front mold plate. An inclined pulling seat and an inclined sliding block assembly are arranged between the fixing plate and the front mold plate, the inclined pulling seat is fixed to the fixing plate, an inclined seat sliding way forming a certain included angle with the mold opening direction is arranged in the inclined pulling seat, the inclined sliding block assembly comprises a first sliding block matched with the inclined seat sliding way, and an inclined mold sliding hole is formed in the front mold plate. The inclined sliding block assembly comprises a second sliding block matched with the inclined mold sliding hole, and the second sliding block is connected with the forming core. In the process, an oil cylinder is not needed, pulling-out of the forming core is achieved only through the power of mold opening, and the mold is compact in structure and low in cost.

Description

Technical Field

[0001] The utility model relates to an injection mold, in particular to a precision inclined guide core-pulling structure of an injection mold. Background Art

[0002] Generally, core-pulling is achieved by driving a forming core to withdraw from a forming hole by an oil cylinder first, so that the front mold and the rear mold can be separated to realize mold opening. However, the oil cylinder is large in volume and high in cost. Therefore, the applicant designs a precision inclined guide core-pulling structure of an injection mold to avoid the disadvantages of using an oil cylinder. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the utility model provides a precision inclined guide core-pulling structure of an injection mold.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] The precision inclined guide core-pulling structure of an injection mold includes a front template, a rear template and a fixing plate, and is characterized in that: an elastic member for keeping the fixing plate and the front template in a separated state is arranged between the fixing plate and the front template; a limiting structure for limiting the separation distance between the front template and the fixing plate is arranged between the fixing plate and the front template; an inclined core-pulling seat and an inclined slider assembly are arranged between the fixing plate and the front template; the inclined core-pulling seat is fixed to the fixing plate; an inclined seat slideway forming a certain angle with the mold opening direction is arranged in the inclined core-pulling seat; the inclined slider assembly includes a slider one matched with the inclined seat slideway; an inclined mold slide hole is arranged in the front template; the inclined slider assembly includes a slider two matched with the inclined mold slide hole, and the slider two is connected with a forming core.

[0006] The elastic member is a compression spring; an installation hole is arranged on the front template; one end of the compression spring is located in the installation hole.

[0007] The limiting structure includes a pull rod and a counterbore arranged on the front template; a rod cap is arranged at the other end of the pull rod; the pull rod passes through the counterbore and is fixed to the fixing plate, and the rod cap is located in the counterbore and can abut against the counterbore.

[0008] The inclined seat slideway is a T-shaped groove.

[0009] A counterbored hole penetrating through the slider two is arranged in the slider two; a core cap is arranged at the end of the forming core; the slider one is fixed to the slider two by screws so as to lock the forming core in the counterbored hole.

[0010] The core cap is C-shaped; the counterbored section of the counterbored hole is a C-shaped hole.

[0011] An installation groove and a seat hole are arranged on the front template; an insert block is arranged in the installation groove; the inclined mold slide hole is arranged in the installation groove and communicates with the seat hole; a core hole communicating with the forming cavity is arranged at the bottom of the inclined mold slide hole.

[0012] The beneficial effects of the present utility model are as follows: Through the design of the elastic member and the limiting structure, the rear template and the front template are ensured not to separate within a certain period of time before mold opening; meanwhile, the fixing plate is separated from the front template, the fixing plate drives the inclined drawing seat to move along the mold opening direction, and then drives the forming core to move obliquely through the first slider and the second slider and withdraw from the forming cavity, and then the rear template and the front template are separated for mold opening. The above process does not require an oil cylinder, and only utilizes the power of mold opening itself to realize the withdrawal of the forming core. Not only is the mold structure compact, but also the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present utility model will be further described below in conjunction with the drawings and embodiments.

[0014] Figure 1 is the overall structural view of the present utility model;

[0015] Figure 2 is the internal structural view of the present utility model;

[0016] Figure 3 is the sectional structural view of the present utility model;

[0017] Figure 4 is the partial structural view of the forming core of the present utility model;

[0018] Figure 5 is the structural view of the front template. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The advantages, features, and implementation methods of the present disclosure will be clarified through the following implementation schemes described with reference to the drawings. However, the present disclosure can be embodied in different forms and should not be construed as limited to the implementation schemes set forth herein. On the contrary, these implementation schemes 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.

[0020] The shapes, sizes, proportions, angles, and numbers disclosed in the drawings used to describe the implementation schemes of the present disclosure are only examples, so the present disclosure is not limited to the details shown. Throughout the 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 key points of the present disclosure, the detailed description will be omitted. In the case of using "including", "having", and "comprising" described in this specification, other components can be added unless "only" is used. Unless otherwise indicated, singular terms can include plural forms.

[0021] When interpreting an element, although not explicitly described, the element is understood to include an error range.

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

[0023] When describing temporal relationships, for example, when a temporal order is described as "after...", "subsequently", "next", and "before...", discontinuous cases may be included unless "exactly" or "directly" is used.

[0024] It should be understood that although terms such as "first", "second", etc. may 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 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 the present disclosure.

[0025] As can be fully understood by those skilled in the art, the features of different embodiments of the present disclosure may be partially or fully coupled or combined with each other, and may cooperate with each other in various ways and be technically driven. The embodiments of the present disclosure may be executed independently of each other, or may be executed together in a mutually dependent relationship.

[0026] Referring to Figures 1 to 5 , the present utility model discloses a precision inclined guide core-pulling structure for an injection mold, which includes a front template 1, a rear template 2, and a fixing plate 3. A molding groove is provided on the front template 1, and a molding block is provided on the rear template 2. When the front template 1 and the rear template 2 are closed, the molding block is located in the molding groove, and a molding cavity 4 is formed between the molding block and the molding groove. An elastic member 5 for keeping the fixing plate 3 and the front template 1 in a separated state is provided between the fixing plate 3 and the front template 1, and a limiting structure for limiting the separation distance between the front template 1 and the fixing plate 3 is provided between the fixing plate 3 and the front template 1. In this application, the elastic member 5 is a compression spring, and an installation hole is provided on the front template 1, and one end of the compression spring is located in the installation hole; the limiting structure specifically includes: a pull rod 6 and a counterbore provided on the front template 1. The other end of the pull rod 6 has a rod cap 7. The pull rod 6 passes through the counterbore and is fixed to the fixing plate 3, and the rod cap 7 is located in the counterbore and can abut against the counterbore. The counterbore includes a countersunk head part and a through-hole part, and the length of the countersunk head part is longer than the length of the rod cap 7, so that the rod cap 7 can have a certain moving distance in the countersunk head part.

[0027] As shown in the figure, an inclined ejection seat 8 and an inclined slider assembly are provided between the fixed plate 3 and the front template 1. The inclined ejection seat 8 is fixed to the fixed plate 3 by screws. An inclined seat slideway 9 is provided in the inclined ejection seat 8 at a certain angle to the mold opening direction. The inclined slider assembly includes a first slider 10 that cooperates with the inclined seat slideway 9. An inclined mold slide hole 12 is provided in the front template 1. The inclined slider assembly includes a second slider 13 that cooperates with the inclined mold slide hole 12. The second slider 13 is connected to the forming core 11. With the above structure, when the fixed plate 3 moves, the first slider 10 and the second slider 13 can be driven to slide by the inclined ejection seat 8, thereby driving the forming core 11 to withdraw from the forming cavity 4.

[0028] Specifically, the inclined seat slideway 9 is a T-shaped groove, and the first slider 10 is a square block. The first slider 10 is embedded in the T-shaped groove. The second slider 13 is inserted from the notch of the T-shaped groove and connected and fixed to the first slider 10. A countersunk hole penetrating the second slider 13 is provided in the second slider 13. A core cap 14 is provided at the end of the forming core 11. The first slider 10 is fixed to the second slider 13 by screws, thereby locking the forming core 11 in the countersunk hole. The above structure is not only convenient for processing and assembly, but also convenient for replacing the forming core 11. Just remove the first slider 10, and the forming core 11 can be withdrawn from the countersunk hole for replacement. Of course, as a further structure, in order to prevent the rotation of the forming core 11, the core cap 14 is C-shaped, and the countersunk section of the countersunk hole is a corresponding C-shaped hole.

[0029] As shown in the figure, the front template 1 is provided with a mounting groove 15 and a seat hole 16. An insert block 17 is provided in the mounting groove 15. The inclined mold slide hole 12 is provided in the mounting groove 15 and communicates with the seat hole 16. A core hole 18 communicating with the forming cavity 4 is provided at the bottom of the inclined mold slide hole 12. One end of the forming core 11 is inserted into the forming cavity 4 through the core hole 18. The above structure is convenient for processing the inclined mold slide hole 12. First, a chute is processed in the mounting groove 15, and then the insert block 17 is locked by screws. The chute and the surface of the insert block 17 enclose the inclined mold slide hole 12.

[0030] The principle of this structure is as follows: When the mold is opened, the rear template 2 moves along the mold opening direction. The elastic force of the elastic member 5 will keep the front template 1 in the closed mold state with the rear template 2 and move together with the rear template 2, but it will cause the fixed plate 3 to separate from the front template 1, and the pull rod 6 will move together with the fixed plate 3. At this time, the fixed plate 3 will drive the inclined ejection seat 8 to move linearly in the reverse direction along the mold opening direction. The inclined ejection seat 8 acts on the first slider 10 through the inclined seat slideway 9, causing the first slider 10 to move relative to the inclined ejection seat 8 along the inclined seat slideway 9, thereby causing the second slider 13 to move along the inclined mold slide hole 12. The second slider 13 drives the forming core 11 to withdraw from the forming cavity 4 until the rod cap 7 abuts against the step surface where the countersunk part meets the through hole part. At this time, the forming core 11 has completely withdrawn from the forming cavity 4, and at the same time, the movement of the front template 1 is restricted, so that it separates from the rear template 2 to achieve complete mold opening, and finally the product can be taken out.

[0031] The above has introduced in detail a precision inclined guide core-pulling structure of an injection mold provided by an embodiment of the present utility model. Specific examples are used in this article to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, 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 utility model.

Claims

1. The precision inclined guide core pulling structure of the injection mold includes a front template, a rear template and a fixed plate, and is characterized by: An elastic member is provided between the fixed plate and the front template to keep the fixed plate and the front template in a separated state, a limiting structure is provided between the fixed plate and the front template to limit the spacing between the front template and the fixed plate, an oblique pull-out seat and an oblique slider assembly are provided between the fixed plate and the front template, the oblique pull-out seat is fixed to the fixed plate, an oblique seat slideway is provided in the oblique pull-out seat and forms a certain angle with the mold opening direction, the oblique slider assembly includes a slider 1 matched with the oblique seat slideway, an oblique mold slide hole is provided in the front template, the oblique slider assembly includes a slider 2 matched with the oblique mold slide hole, and the slider 2 is connected to the molding core.

2. The precision inclined guide core pulling structure of an injection mold according to claim 1, characterized in that: The elastic member is a compression spring. A mounting hole is provided on the front template. One end of the compression spring is located in the mounting hole.

3. The precision inclined guide core pulling structure of an injection mold according to claim 1, characterized in that: The limiting structure includes a pull rod and a countersunk hole arranged on the front template. The other end of the pull rod is provided with a rod cap. The pull rod passes through the countersunk hole and is fixed to the fixing plate. The rod cap is located in the countersunk hole and can abut against the countersunk hole.

4. The precision inclined guide core pulling structure of an injection mold according to claim 1, characterized in that: The inclined seat slideway is a T-shaped slot.

5. The precision inclined core-pulling structure for injection mold according to claim 1, characterized in that: The slider 2 is provided with a countersunk hole penetrating the slider 2, and the end of the molding core is provided with a core cap. The slider 1 is fixed to the slider 2 by screws so as to lock the molding core in the countersunk hole.

6. The precision inclined core-pulling structure for injection mold according to claim 5, characterized in that: The core cap is C-shaped, and the countersunk section of the countersunk hole is a C-shaped hole.

7. The precision inclined guide core pulling structure of an injection mold according to claim 1, characterized in that: The front template is provided with a mounting groove and a seat hole, an insert is provided in the mounting groove, the oblique mold sliding hole is arranged in the mounting groove and communicates with the seat hole, and a core hole communicated with the forming cavity is provided at the bottom of the oblique mold sliding hole.

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