A type of phone case molding die that is less prone to tearing

Abstract

This utility model discloses a mobile phone case molding mold that is less prone to tearing, including a fixed mold base plate and a moving mold base plate. A fixed template is installed on the fixed mold base plate, and a moving template is installed on the moving mold base plate. A cavity is formed between the fixed template and the moving template. A side core-pulling assembly is provided inside the moving template. The side core-pulling assembly includes a lateral core block, an inclined guide post, and a sound post insert. The lateral core block is slidably disposed within the moving template. The sound post insert is detachably disposed on the side of the lateral core block near the cavity. The sound post insert includes an outer sound post layer and an inner sound post layer. This utility model, by sliding the outer sound post layer onto the outer periphery of the inner sound post layer, allows the inner sound post layer to move first during demolding, followed by the outer sound post layer. This creates a clearance fit between the inner and outer sound post layers, facilitating demolding. It effectively solves the problem of tearing and deformation of the sound hole structure of the mobile phone case during demolding, and significantly improves product quality and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mobile phone case molding technology, specifically a mobile phone case molding mold that is not easily damaged by tearing. Background Technology

[0002] In the production process of mobile phone cases, the side core-pulling structure of the molding die plays a crucial role in product quality and production efficiency. Some mobile phone cases have a sound hole on one side composed of multiple densely distributed small holes. The large number and density of these holes make the side core-pulling structure prone to defects such as tearing and deformation at the sound hole area during demolding, severely affecting the product's appearance quality and yield rate.

[0003] Therefore, it is necessary to provide a mobile phone case molding die that is not easily damaged by tearing to solve the above technical problems. Utility Model Content

[0004] The purpose of this invention is to provide a mobile phone case molding die that is not easily damaged by tearing, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a mobile phone case molding mold that is not easily damaged by tearing, comprising a fixed mold base plate and a movable mold base plate. A fixed template is installed on the fixed mold base plate, and a movable template is installed on the movable mold base plate. A cavity is formed between the fixed template and the movable template. A fixed mold core is provided on the fixed template, and a movable mold core is provided on the movable template. A side core-pulling assembly is provided inside the movable template. The side core-pulling assembly includes a lateral core block, an inclined guide post, and a sound post insert. The lateral core block is slidably disposed within the movable template. One end of the inclined guide post is fixed to the fixed mold base plate, and the other end passes through the lateral core block and is slidably connected to the lateral core block. The sound post insert is detachably set on the side of the lateral core block near the cavity. The sound post insert includes an outer sound post layer and an inner sound post layer. The inner sound post layer is fixedly connected to the lateral core block, and the outer sound post layer is slidably sleeved on the outer periphery of the inner sound post layer. The outer sound post layer can form a contact fit or clearance fit with the inner sound post layer by sliding. The moving mold core is provided with positioning holes that cooperate with the sound post insert.

[0006] Preferably, the length of the outer layer of the sound column is less than the length of the inner layer of the sound column, the inner wall surface of the outer layer of the sound column is an inner conical surface, the outer peripheral surface of the inner layer of the sound column is an outer conical surface, the inner diameter of the end of the outer layer of the sound column away from the lateral core block is smaller, and the outer diameter of the end of the inner layer of the sound column away from the lateral core block is smaller.

[0007] Preferably, a limiting protrusion is fixedly provided at one end of the inner layer of the sound column, and the limiting protrusion cooperates with the positioning hole.

[0008] Preferably, a limiting recess is provided on the outer side of the positioning hole, and the limiting recess cooperates with the outer layer of the sound column.

[0009] Preferably, in the mold-closed state, the inner layer of the sound column is a set distance away from the inner bottom surface of the positioning hole.

[0010] Preferably, the lateral core block is provided with an oblique guide post hole that mates with the oblique guide post. The diameter of the oblique guide post hole is larger than the diameter of the oblique guide post, and there is a gap between the two.

[0011] Preferably, the moving template is provided with a groove for sliding the lateral core block, and the length of the groove is greater than the core pulling stroke of the lateral core block.

[0012] Preferably, the fixed template is provided with a clamping block that cooperates with the lateral core block.

[0013] Preferably, the outer surface of the sound column is provided with a wear-resistant layer, which is made of silicon carbide.

[0014] Preferably, the outer diameter of the sound column insert is smaller at the end closer to the moving mold core, the sound column insert is inserted through the lateral core block, a limiting plate is detachably fixed on the outer side of the lateral core block, and the end of the sound column insert with a larger outer diameter contacts the limiting plate.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. This utility model, through the design of the sound column insert, slides the outer layer of the sound column onto the outer periphery of the inner layer of the sound column. During demolding, the inner layer of the sound column moves first, and then the outer layer of the sound column moves, so that a gap fit is formed between the inner and outer layers of the sound column. This allows the outer layer of the sound column to undergo a slight deformation during the demolding process, which is very conducive to demolding. This design effectively disperses the core-pulling force and avoids scratches or deformations on the surface of the phone case caused by excessive or uneven core-pulling force, thereby significantly improving the appearance quality and yield of the product.

[0017] 2. The trapezoidal cross-section structure of the sound column insert in this utility model, the fit between it and the positioning hole, and the setting of the limiting protrusion and limiting concave step further enhance the stability and positioning accuracy of the sound column insert in the mold. This design not only improves the durability of the mold but also ensures the precision of the phone case during the molding process, meeting the production needs of complex structure phone cases. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2This is a schematic diagram of the structure of this utility model from another perspective;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model from below;

[0021] Figure 4 This is a partial structural diagram of the present invention;

[0022] Figure 5 This is a schematic diagram of the sound column insert structure of this utility model.

[0023] In the diagram: 1. Fixed mold base plate; 2. Moving mold base plate; 3. Fixed template; 4. Moving template; 5. Fixed mold core; 6. Moving mold core; 7. Side core-pulling assembly; 8. Side core block; 9. Sound column insert; 10. Outer layer of sound column; 11. Inner layer of sound column; 12. Positioning hole; 13. Limiting protrusion; 14. Angled guide post hole; 15. Limiting concave step; 16. Slide groove; 17. Clamping block; 18. Limiting plate. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figure 1-5 This utility model provides a technical solution for a mobile phone case molding die that is not easily damaged by tearing: it includes a fixed mold base plate 1 and a moving mold base plate 2. A fixed template 3 is installed on the fixed mold base plate 1, and a moving template 4 is installed on the moving mold base plate 2. A cavity is formed between the fixed template 3 and the moving template 4. A fixed mold core 5 is provided on the fixed template 3, and a moving mold core 6 is provided on the moving template 4. A side core pulling assembly 7 is provided inside the moving template 4. The side core pulling assembly 7 includes a lateral core block 8, an inclined guide post, and a sound post insert 9. The lateral core block 8 is slidably disposed inside the moving template 4, and one end of the inclined guide post is fixed to... On the fixed mold base plate 1, the other end passes through the lateral core block 8 and is slidably connected to the lateral core block 8. The sound column insert 9 is detachably disposed on the side of the lateral core block 8 near the cavity. The sound column insert 9 includes a sound column outer layer 10 and a sound column inner layer 11. The sound column inner layer 11 is fixedly connected to the lateral core block 8. The sound column outer layer 10 is slidably sleeved on the outer periphery of the sound column inner layer 11. The sound column outer layer 10 can form a contact fit or clearance fit with the sound column inner layer 11 by sliding. The moving mold core 6 is provided with a positioning hole 12 that mates with the sound column insert 9.

[0026] Combination Figure 5As shown, the length of the outer layer 10 of the sound column is less than the length of the inner layer 11 of the sound column. The inner wall surface of the outer layer 10 is an inner conical surface, and the outer peripheral surface of the inner layer 11 is an outer conical surface. The inner diameter of the end of the outer layer 10 away from the lateral core block 8 is smaller, and the outer diameter of the end of the inner layer 11 away from the lateral core block 8 is smaller. The conical fit allows the sound column insert 9 to slide more easily into the positioning hole 12 during assembly, and also allows it to form a more stable positioning fit with the positioning hole 12, improving the quality of the phone case molding. In addition, the conical fit also makes the sound column insert 9 easier to demold.

[0027] Combination Figure 5 As shown, a limiting protrusion 13 is fixedly provided at one end of the inner layer 11 of the sound column. The limiting protrusion 13 cooperates with the positioning hole 12. The shape and size of the limiting protrusion 13 match the positioning hole 12 to ensure that the sound column insert 9 can be accurately and stably positioned in the positioning hole 12 on the moving mold core 6 during installation.

[0028] Combination Figure 5 As shown, a limiting recess 15 is provided on the outer side of the positioning hole 12. The limiting recess 15 cooperates with the outer layer 10 of the sound column. The limiting recess 15 can effectively prevent the outer layer 10 of the sound column from shifting during injection molding, ensuring the precise positioning of the sound column insert 9 and the moving mold core 6. At the same time, the limiting recess 15 can also provide a certain degree of support for the outer layer 10 of the sound column, improving its stability during injection molding and further reducing the possibility of tearing.

[0029] Combination Figure 2 As shown, in the mold-closed state, the inner layer 11 of the sound column and the inner bottom surface of the positioning hole 12 are separated by a set distance to ensure that the sound column insert 9 and the positioning hole 12 can be inserted and fitted in place.

[0030] Combination Figure 4 As shown, the lateral core block 8 is provided with an oblique guide post hole 14 that cooperates with the oblique guide post. The diameter of the oblique guide post hole 14 is larger than the diameter of the oblique guide post, and there is a gap between the two. This gap cooperation allows the oblique guide post to move a certain stroke relative to the lateral core block 8 in the early stage of mold opening, thereby realizing the pre-core pulling action of the insert.

[0031] Combination Figure 4 As shown, the moving template 4 is provided with a sliding groove 16 for the sliding of the lateral core block 8. The length of the sliding groove 16 is greater than the core pulling stroke of the lateral core block 8, ensuring that the lateral core block 8 has enough sliding space during the core pulling process and ensuring the smooth progress of the core pulling action.

[0032] Combination Figure 4As shown, the fixed mold plate 3 is provided with a clamping block 17 that cooperates with the side core block 8. In the mold-closed state, the clamping block 17 is tightly fitted with the side core block 8 to prevent the side core block 8 from shifting during injection molding. The clamping block 17 can effectively ensure the stability of the side core block 8 during injection molding and avoid affecting the product molding quality due to the movement of the side core block 8.

[0033] Optionally, the surface of the outer layer 10 of the sound column is provided with a wear-resistant layer, which may be made of silicon carbide.

[0034] Combination Figure 5 As shown, in this embodiment, the outer diameter of the sound column insert 9 near the moving mold core 6 is smaller. The sound column insert 9 is inserted through the lateral core block 8. A limiting plate 18 is detachably fixed to the outer side of the lateral core block 8. The end of the sound column insert 9 with a larger outer diameter contacts the limiting plate 18. The limiting plate 18 can fix and restrict the sound column insert 9 inside the lateral core block 8.

[0035] Working principle: During use, the lateral core block 8 is driven to slide by the inclined guide post, which in turn drives the sound column insert 9 to perform a lateral core pulling action. The sound column insert 9 is formed by the movable connection of the outer layer 10 and the inner layer 11 of the sound column, which makes the sound column insert 9 less prone to being pulled during the core pulling process, thus ensuring the molding quality of the mobile phone case.

[0036] Please refer to Figure 5 In terms of the view orientation, specifically, the inner layer 11 of the sound column is fixedly connected to the left lateral core block 8, and the outer layer 10 of the sound column is slidably sleeved on the inner layer 11 of the sound column.

[0037] When the mold is closed, the lateral core block 8 moves to the right. During the movement, the outer layer 10 of the sound column will first contact the limiting recess 15 of the inner wall of the positioning hole 12. Then, the lateral core block 8 and the inner layer 11 of the sound column continue to move to the right a certain distance, so that the left end of the outer layer 10 of the sound column contacts the lateral core block 8. The outer layer 10 of the sound column is located at the left end of the inner layer 11 of the sound column. At the same time, the outer layer 10 of the sound column contacts and fits on the outer peripheral surface of the inner layer 11 of the sound column, so that the inner layer 11 of the sound column provides support to the outside.

[0038] During demolding, the lateral core block 8 and the inner layer 11 of the sound column first move to the left until the limiting protrusion 13 on the outer periphery of the right end of the inner layer 11 drives the outer layer 10 of the sound column. Only then does the outer layer 10 of the sound column begin to move. When the outer layer 10 of the sound column moves, it fits against the right end of the inner layer 11 of the sound column, creating a gap between the inner layer 11 and the outer side. This makes the outer layer 10 of the sound column more microscopically deformable. During the demolding process, the outer layer 10 of the sound column can undergo a small amount of deformation, which is very conducive to demolding and makes it less likely to damage the phone case during demolding.

[0039] This utility model provides a mobile phone case molding mold that is not easily damaged by tearing. It has a reasonable structural design and is easy to use. It can effectively avoid the problem of tearing of the sound column insert during the core pulling process, thereby improving the molding quality and production efficiency of the mobile phone case.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mobile phone shell forming die not easy to be pulled, comprising a fixed die base plate (1) and a movable die base plate (2), characterized in that: A fixed template (3) is installed on the fixed mold base plate (1), and a moving template (4) is installed on the moving mold base plate (2). A cavity is formed between the fixed template (3) and the moving template (4). A fixed mold core (5) is provided on the fixed template (3), and a moving mold core (6) is provided on the moving template (4). A side core-pulling assembly (7) is provided inside the moving template (4). The side core-pulling assembly (7) includes a side core block (8), an inclined guide post, and a sound post insert (9). The side core block (8) is slidably disposed inside the moving template (4). One end of the inclined guide post is fixed on the fixed mold base plate (1), and the other end passes through the side core block (8). And it is slidably connected to the side core block (8). The sound column insert (9) is detachably set on the side of the side core block (8) near the cavity. The sound column insert (9) includes a sound column outer layer (10) and a sound column inner layer (11). The sound column inner layer (11) is fixedly connected to the side core block (8). The sound column outer layer (10) is slidably sleeved on the outer periphery of the sound column inner layer (11). The sound column outer layer (10) can form a contact fit or clearance fit with the sound column inner layer (11) by sliding. The moving mold core (6) is provided with a positioning hole (12) that cooperates with the sound column insert (9).

2. The cell phone case forming mold of claim 1, wherein, The length of the outer layer (10) of the sound column is less than the length of the inner layer (11) of the sound column. The inner wall surface of the outer layer (10) of the sound column is an inner conical surface, and the outer peripheral surface of the inner layer (11) of the sound column is an outer conical surface. The inner diameter of the end of the outer layer (10) of the sound column away from the lateral core block (8) is smaller, and the outer diameter of the end of the inner layer (11) of the sound column away from the lateral core block (8) is smaller.

3. The cell phone case forming mold of claim 2, wherein, One end of the inner layer (11) of the sound column is fixedly provided with a limiting protrusion (13), and the limiting protrusion (13) cooperates with the positioning hole (12).

4. The cell phone case forming mold of claim 3, wherein, The positioning hole (12) is provided with a limiting recess (15) on the outside, and the limiting recess (15) cooperates with the outer layer (10) of the sound column.

5. The cell phone case forming mold of claim 4, wherein, In the mold-closed state, the inner layer (11) of the sound column is a set distance away from the inner bottom surface of the positioning hole (12).

6. The mobile phone case molding die that is not easily damaged by tearing according to claim 1, characterized in that, The lateral core block (8) is provided with an oblique guide post hole (14) that cooperates with the oblique guide post. The diameter of the oblique guide post hole (14) is larger than the diameter of the oblique guide post, and there is a gap between the two.

7. A mobile phone case molding die that is not easily damaged by tearing, as described in claim 1, is characterized in that... The moving template (4) is provided with a sliding groove (16) for sliding the lateral core block (8), and the length of the sliding groove (16) is greater than the core pulling stroke of the lateral core block (8).

8. The mobile phone case molding die that is not easily damaged by tearing according to claim 1, characterized in that, The fixed template (3) is provided with a clamping block (17) that cooperates with the lateral core block (8).

9. A mobile phone case molding die that is not easily damaged by tearing, as described in claim 1, is characterized in that... The outer layer (10) of the sound column is provided with a wear-resistant layer, which is made of silicon carbide.

10. A mobile phone case molding die that is not easily damaged by tearing, as described in claim 4, is characterized in that, The sound column insert (9) has a smaller outer diameter at the end near the moving mold core (6). The sound column insert (9) is inserted through the side core block (8). A limiting plate (18) is detachably fixed on the outer side of the side core block (8). The end of the sound column insert (9) with a larger outer diameter contacts the limiting plate (18).

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