Injection mold structure with insert convenient to replace
By introducing inclined planes and insert structures into the injection mold, the problem of time-consuming insert replacement was solved, enabling rapid insert replacement and improving production efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN XINDA TECHNOLOGY CO LTD
- Filing Date
- 2025-04-29
- Publication Date
- 2026-04-28
AI Technical Summary
Traditional injection molds are time-consuming and labor-intensive to change inserts, resulting in decreased production efficiency.
An injection mold structure that facilitates insert replacement was designed. By setting inclined surfaces and insert rod structures on the insert body, the interaction between the insert rod and the inclined surfaces enables quick insert replacement, avoiding mold disassembly and complex operations.
It enables quick replacement of inserts, simplifies the operation process, improves production efficiency, and reduces time and labor consumption.
Smart Images
Figure CN224170333U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold structure that facilitates the replacement of inserts. Background Technology
[0002] Traditional production methods use a single mold for each product specification, which wastes resources on auxiliary production tools and increases their processing time. With the increasing diversity and rapid updates in plastic product styles, a single plastic mold is typically required to produce multiple different products with varying local features, without increasing the number of cavities in the mold.
[0003] To meet the above requirements, different inserts need to be replaced when producing different products. Inserts are usually embedded or fixed inside the mold by screws or other structures. Therefore, when replacing inserts, the mold needs to be removed from the injection molding machine and disassembled before the inserts can be replaced. However, this replacement method is not only time-consuming and labor-intensive, but also reduces production efficiency. Utility Model Content
[0004] The purpose of this utility model is to provide an injection mold structure that facilitates the replacement of inserts. It is simple to operate and can quickly replace inserts, thereby solving the problem mentioned in the background art that insert replacement is time-consuming and labor-intensive, resulting in a decrease in production efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An injection mold structure for easy insert replacement includes an upper mold plate and a lower mold plate fitted together. An upper mold core is embedded in the bottom surface of the upper mold plate, and a lower mold core opposite to the upper mold core is embedded in the top surface of the lower mold plate. A cavity is formed between the upper mold core and the lower mold core. An insertion hole is provided in the lower mold core, and an insert body with one end extending into the cavity is inserted into the insertion hole. The side wall of the lower mold plate is provided with a through hole and a through hole that penetrate the lower mold core and extend to the insertion hole. An insert rod with one end movably connected to the insert body and the other end extending out of the side wall of the lower mold plate is provided in the through hole. A limiting rod with one end inserted into the insert body and the other end extending out of the side wall of the lower mold plate is provided in the through hole.
[0007] Preferably, the side wall of the insert body is provided with a receiving groove, the inner wall of the receiving groove is provided with a first inclined surface extending towards the bottom wall of the insert body, and the end face of the insertion rod extending into the insertion hole is provided with a second inclined surface extending towards its top surface. The second inclined surface and the first inclined surface have the same inclination angle and fit together.
[0008] Preferably, the insert body has a first limiting hole that penetrates its two side walls, so that one end of the limiting rod can be inserted.
[0009] Preferably, a first flared opening is formed at the connection between the first limiting hole and the side wall of the insert body, and the end of the limiting rod is provided with an arc-shaped structure corresponding to the first flared opening.
[0010] Preferably, the inner wall of the socket has a cavity, and a limiting block is embedded in the cavity.
[0011] Preferably, the limiting block has a second limiting hole in the middle along the horizontal direction for the limiting rod to pass through.
[0012] Preferably, the bottom surface of the limiting block is provided with a limiting groove along the horizontal direction for the insertion rod to pass through.
[0013] Preferably, the limiting block has a third limiting hole in the vertical direction, and a forming rod that extends upward into the cavity is inserted into the third limiting hole.
[0014] Preferably, the limiting rod is a round rod structure, and the insertion rod is a square rod structure.
[0015] Preferably, a second flared opening is formed at the connection between the second limiting hole and the side wall of the limiting block. The limiting rod includes a first rod segment and a second rod segment coaxially connected to the first rod segment. The diameter of the first rod segment is larger than the diameter of the second rod segment. A conical structure adapted to the second flared opening is formed at the connection between the first rod segment and the second rod segment.
[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: the inner wall of the receiving groove is provided with a first inclined surface extending towards the bottom wall of the insert body, and the end face of the insert rod extending into the insertion hole is provided with a second inclined surface extending towards its top surface. The second inclined surface and the first inclined surface have the same inclination angle and fit together. When the insert body needs to be replaced, the insert rod is pushed along the through hole towards the insert body, and the insert rod can lift the insert body, thereby quickly replacing the new insert body. This can effectively solve the problem of product replacement. The operation is simple, no disassembly is required, saving time and effort and improving production efficiency. Attached Figure Description
[0017] Figure 1 This is a perspective view of an injection mold structure that facilitates the replacement of inserts according to this utility model;
[0018] Figure 2 This is a front view of an injection mold structure that facilitates the replacement of inserts according to this utility model;
[0019] Figure 3 for Figure 2 Sectional view of section AA;
[0020] Figure 4 This is a perspective view of the lower mold core of this utility model;
[0021] Figure 5 This is a perspective view of the lower mold core of this utility model from another angle;
[0022] Figure 6 This is a perspective view of the insert rod, the limiting rod, and the insert body of the present utility model;
[0023] Figure 7 This is an exploded view of the insert rod, the limiting rod, and the insert body of this utility model;
[0024] Figure 8 This is a cross-sectional view of the present invention when the insert body is replaced.
[0025] In the diagram: 1. Upper template; 2. Lower template; 3. Upper mold core; 4. Lower mold core; 5. Insert body; 51. First limiting hole; 511. First flared opening; 52. Receiving groove; 53. First inclined surface; 6. Insert rod; 61. Second inclined surface; 7. Limiting rod; 71. First rod segment; 72. Second rod segment; 73. Conical structure; 8. Limiting block; 81. Second limiting hole; 811. Second flared opening; 82. Limiting groove; 83. Third limiting hole; 9. Forming rod. Detailed Implementation
[0026] 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.
[0027] Please see Figure 1-3 An injection mold structure for easy insert replacement includes an upper mold plate 1 and a lower mold plate 2 that are fitted together. An upper mold core 3 is embedded in the bottom surface of the upper mold plate 1, and a lower mold core 4, opposite to the upper mold core 3, is embedded in the top surface of the lower mold plate 2. A cavity is formed between the upper mold core 3 and the lower mold core 4. The lower mold core 4 has an insertion hole into which an insert body 5, extending one end into the cavity, is inserted for use in injection molding of the product. In this embodiment, several upper mold cores 3 and lower mold cores 4 are correspondingly provided.
[0028] The lower mold plate 2 has through holes and perforations on its side walls, each penetrating the lower mold core 4 and extending to the insertion hole. A rod 6, with one end movably connected to the insert body 5 and the other end extending out of the side wall of the lower mold plate 2, is installed in the through hole. The rod 6 is used to push the insert body 5 out of the insertion hole. A limiting rod 7, with one end inserted into the insert body 5 and the other end extending out of the side wall of the lower mold plate 2, is installed in the perforation. The limiting rod 7 is used to position the insert body 5, preventing it from moving during product injection molding and affecting product quality.
[0029] Please see Figure 2 as well as Figure 7 The insert body 5 has a first limiting hole 51 penetrating its two side walls, allowing one end of the limiting rod 7 to be inserted to position the insert body 5. In this embodiment, a first flared opening 511 is formed at the connection between the first limiting hole 51 and the side wall of the insert body 5, and the end of the limiting rod 7 is provided with an arc surface structure corresponding to the first flared opening 511, which facilitates the alignment of the limiting rod 7 with the first limiting hole 51 and makes positioning convenient.
[0030] Please see Figure 7 The insert body 5 has a receiving groove 52 on its side wall. The inner wall of the receiving groove 52 has a first inclined surface 53 extending towards the bottom wall of the insert body 5. The end face of the insertion rod 6, which extends into the insertion hole, has a second inclined surface 61 extending towards its top surface. The second inclined surface 61 and the first inclined surface 53 have the same inclination angle and fit together. When the insert body 5 needs to be replaced, the insertion rod 6 is pushed along the through hole towards the insert body 5. The insertion rod 6 can then lift the insert body 5, allowing for quick replacement with a new insert body 5. This effectively solves the problem of product replacement. The operation is simple, requires no disassembly, saves time and effort, and improves production efficiency.
[0031] Please see Figure 2 as well as Figure 5 The inner wall of the socket has a cavity, and a limiting block 8 is embedded in the cavity. Please refer to [link / reference]. Figure 6-7 The limiting block 8 has a second limiting hole 81 in the middle of its horizontal direction for the limiting rod 7 to pass through, and a limiting groove 82 in the bottom surface of the limiting block 8 for the insertion rod 6 to pass through. In this embodiment, the limiting block 8 has a third limiting hole 83 in the vertical direction. Please refer to [link to relevant documentation]. Figure 3 A forming rod 9 is inserted into the third limiting hole 83 and extends upward into the cavity.
[0032] In this embodiment, the limiting rod 7 is a round rod structure, and the insertion rod 6 is a square rod structure. Please refer to [link / reference]. Figure 6-7 A second flared opening 811 is formed at the connection between the second limiting hole 81 and the side wall of the limiting block 8. The limiting rod 7 includes a first rod segment 71 and a second rod segment 72 coaxially connected to the first rod segment 71. The diameter of the first rod segment 71 is larger than the diameter of the second rod segment 72. A tapered structure 73 adapted to the second flared opening 811 is formed at the connection between the first rod segment 71 and the second rod segment 72. When the insert body 5 is positioned by the limiting rod 7, it can be determined that the limiting rod 7 is inserted in place when the tapered structure 73 of the limiting rod 7 abuts against the second flared opening 811.
[0033] The working principle of this utility model's injection mold structure, which facilitates insert replacement, is as follows: Please refer to... Figure 8When it is necessary to replace the insert body 5, the upper mold plate 1 and the lower mold plate 2 are in the open mold state. First, pull the limiting rod 7 out of the insert body 5, which can be partially or completely pulled out. Then, gently tap the insert rod 6. The insert rod 6 pushes into the receiving groove 52 of the insert body 5. The second inclined surface 61 continuously pushes against the first inclined surface 53, thereby tilting the insert body 5 upward. At this time, the insert body 5 can be taken out from the top of the insertion hole. Then, pull the insert rod 6 out of the insertion hole and insert another insert body 5 that needs to be replaced into the insertion hole from the top of the insertion hole. Tap it to the bottom and then insert the limiting rod 7. When the conical structure 73 of the limiting rod 7 contacts the second flared mouth 811 on the limiting block 8, the insertion action can be stopped. Then, insert the insert rod 6 into the receiving groove 52 of the insert body 5 until the second inclined surface 61 of the insert rod 6 fits against the first inclined surface 53 of the insert body 5. The replacement action is completed.
[0034] 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. An injection mold structure for easy replacement of inserts, comprising an upper mold plate (1) and a lower mold plate (2) fitted together, wherein an upper mold core (3) is embedded on the bottom surface of the upper mold plate (1), and a lower mold core (4) opposite to the upper mold core (3) is embedded on the top surface of the lower mold plate (2), wherein a cavity is formed between the upper mold core (3) and the lower mold core (4), characterized in that: The lower mold core (4) has an insertion hole, into which an insert body (5) with one end extending into the cavity is inserted. The side wall of the lower template (2) has a through hole and a through hole that penetrate the lower mold core (4) and extend into the insertion hole. The through hole has an insert rod (6) with one end movably connected to the insert body (5) and the other end extending out of the side wall of the lower template (2). The through hole has a limiting rod (7) with one end inserted into the insert body (5) and the other end extending out of the side wall of the lower template (2).
2. The injection mold structure for easy replacement of inserts according to claim 1, characterized in that: The insert body (5) has a receiving groove (52) on its side wall. The inner wall of the receiving groove (52) is provided with a first inclined surface (53) extending towards the bottom wall of the insert body (5). The end face of the insertion rod (6) that extends into the insertion hole is provided with a second inclined surface (61) extending towards its top surface. The second inclined surface (61) and the first inclined surface (53) have the same inclination angle and fit together.
3. The injection mold structure for easy replacement of inserts according to claim 1, characterized in that: The insert body (5) has a first limiting hole (51) that penetrates its two side walls, so that one end of the limiting rod (7) can be inserted.
4. The injection mold structure for easy replacement of inserts according to claim 3, characterized in that: The first limiting hole (51) is connected to the side wall of the insert body (5) to form a first flared mouth (511), and the end of the limiting rod (7) is provided with an arc surface structure corresponding to the first flared mouth (511).
5. The injection mold structure for easy replacement of inserts according to claim 1, characterized in that: The inner wall of the socket is provided with a cavity, and a limiting block (8) is embedded in the cavity.
6. The injection mold structure for easy replacement of inserts according to claim 5, characterized in that: The limiting block (8) has a second limiting hole (81) in the middle along the horizontal direction for the limiting rod (7) to pass through.
7. The injection mold structure for easy replacement of inserts according to claim 6, characterized in that: The bottom surface of the limiting block (8) is provided with a limiting groove (82) for the insertion rod (6) to pass through in the horizontal direction.
8. The injection mold structure for easy replacement of inserts according to claim 7, characterized in that: The limiting block (8) has a third limiting hole (83) in the vertical direction, and a forming rod (9) is inserted into the third limiting hole (83) and extends upward into the cavity.
9. The injection mold structure for easy replacement of inserts according to any one of claims 6-8, characterized in that: The limiting rod (7) is a round rod structure, and the insertion rod (6) is a square rod structure.
10. The injection mold structure for easy replacement of inserts according to claim 9, characterized in that: The second limiting hole (81) and the side wall of the limiting block (8) form a second flared mouth (811). The limiting rod (7) includes a first rod segment (71) and a second rod segment (72) coaxially connected with the first rod segment (71). The diameter of the first rod segment (71) is larger than the diameter of the second rod segment (72). The connection between the first rod segment (71) and the second rod segment (72) forms a conical structure (73) that is adapted to the second flared mouth (811).