Mold core fixing device for mold production
By setting mounting grooves and connecting nuts and threads in the mold, the mold core can be quickly locked and released, solving the problem of easy loss of fasteners and improving the efficiency and stability of mold production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN YUYICHANGXIN PRECISION TECHNOLOGY CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-29
AI Technical Summary
In existing mold production, fasteners are easily lost, affecting subsequent processing and use.
An installation groove is set in the mold, and a nut and a threaded rod are connected in the groove. The lower template is limited by the threaded rod, so that the mold core can be quickly locked and released, avoiding the need to disassemble the fasteners separately.
This solves the problem of easy loss of fasteners, improves the efficiency and stability of mold core assembly and disassembly, and ensures smooth subsequent processing.
Smart Images

Figure CN224296306U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mold production technology, specifically to a mold core fixing device for mold production. Background Technology
[0002] Molds are various molds and tools used in industrial production to obtain desired products through methods such as injection molding, blow molding, extrusion, die casting or forging, smelting, and stamping. Molds consist of components such as mold base, mold frame, and mold core. The use of molds greatly improves the efficiency of industrial production.
[0003] A Chinese utility model patent (publication number: CN215750250U) discloses a mold core fixing device for silicone mold production, including a lower template for placing several mold cores. The mold cores have a second through hole inside, and the lower template has a first through hole inside. A fixing member passes through the first through hole and penetrates through the first through hole and the second through hole. By setting the first through hole, the second through hole and the fixing member, the device effectively avoids the problem of mold cores sticking to the upper template and being difficult and time-consuming to remove, which is common in existing devices. This allows workers to quickly remove the mold cores and products, reducing time consumption and increasing production capacity.
[0004] In the aforementioned patent, the mold core is fixed by a fastener. When disassembly is required, the fastener is pulled out to release the fixing limit on the mold core. However, since the fastener is a separate part, pulling it out will cause the part to be lost, thus affecting subsequent processing and use. Therefore, a mold core fixing device for mold production is proposed to overcome the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a mold core fixing device for mold production. By opening an installation groove, and then setting a nut inside the installation groove, a threaded rod is threaded onto the nut, thereby limiting the threaded rod to the lower template, that is, limiting the insertion rod to the lower template. This means that after the mold core is released from the limiting position, it does not need to be disassembled. This solves the problem that the fixing part is a separate part, and after being pulled out, the part will be lost, thus affecting subsequent processing and use.
[0006] This utility model is achieved through the following technical solution:
[0007] This utility model is a mold core fixing device for mold production, including a lower template and an upper template. The mold core is provided inside the lower template. A pair of through holes are opened on both sides of the lower template. An installation groove is opened at one end of the pair of through holes. A nut is provided inside the installation groove. A threaded rod is fitted inside the nut. An insertion rod is provided at one end of the threaded rod. Limiting insertion holes corresponding to the through holes are opened on both sides of the mold core. The insertion rod is set in the limiting insertion hole.
[0008] Furthermore, the lower template has a U-shaped structure, and three first positioning blocks are provided on the top two sides of the lower template. The bottom of both ends of the mold core are respectively provided with first positioning holes corresponding to the first positioning blocks, and the first positioning blocks are set in the first positioning holes.
[0009] Furthermore, a pair of second positioning blocks are provided on each of the top two sides of the mold core.
[0010] Furthermore, the top two sides of the upper template are respectively provided with second positioning holes corresponding to the second positioning blocks, and the bottom center of the upper template is provided with a protrusion that cooperates with the mold core.
[0011] Furthermore, a turntable is provided at the other end of the threaded rod.
[0012] This utility model has the following beneficial effects:
[0013] This invention creates an installation groove, places a nut inside the groove, and then threads a threaded rod onto the nut, thus limiting the threaded rod to the lower template. This means that the insert rod is limited to the lower template, so that after the mold core is released from its limit, it does not need to be disassembled. This solves the problem that the fixing part is a separate component, and pulling it out would cause the part to be lost, thus affecting subsequent processing and use.
[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of the mold;
[0016] Figure 2 This is a schematic diagram of the mold core structure;
[0017] Figure 3 This is a schematic diagram of the template structure.
[0018] Figure 4 This is a schematic diagram of the template structure.
[0019] In the diagram: 1. Lower template; 101. First positioning block; 102. Through hole; 103. Mounting groove; 2. Upper template; 201. Second positioning hole; 202. Protrusion; 3. Mold core; 301. Second positioning block; 302. First positioning hole; 303. Limiting insertion hole; 4. Nut; 5. Threaded rod; 501. Turntable; 502. Insert rod. Detailed Implementation
[0020] 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.
[0021] Please see Figure 1-4 This utility model provides a technical solution: a mold core fixing device for mold production, including a lower mold plate 1 and an upper mold plate 2. A mold core 3 is provided inside the lower mold plate 1. A pair of through holes 102 are respectively opened on both sides of the lower mold plate 1. An installation groove 103 is opened at one end of each pair of through holes 102. A nut 4 is provided inside the installation groove 103. A threaded rod 5 is fitted inside the nut 4. The through holes 102 and the installation groove 103 are used to install the nut 4 and the threaded rod 5, forming an adjustable locking mechanism. The threaded rod 5... One end is provided with a plug rod 502. The threaded rod 5 drives the plug rod 502 to be inserted into the limiting insertion hole 303 of the mold core 3 by rotation, so as to realize the quick locking and unlocking of the mold core 3. The other end of the threaded rod 5 is provided with a turntable 501. The turntable 501 facilitates manual operation and improves the efficiency of disassembly and assembly. The mold core 3 has limiting insertion holes 303 with corresponding through holes 102 on both sides. The plug rod 502 is set in the limiting insertion hole 303. The limiting insertion hole 303 and the plug rod 502 cooperate to realize the radial fixation of the mold core 3 and prevent loosening.
[0022] By opening an installation groove 103, and then setting a nut 4 inside the installation groove 103, and then threading the threaded rod 5 onto the nut 4, the threaded rod 5 is limited to the lower template 1, that is, the insertion rod 502 is limited to the lower template 1. This means that after the mold core 3 is released from the limit, it does not need to be disassembled. This solves the problem that the fixing part is a separate part, and after being pulled out, the part will be lost, which will affect the subsequent processing and use.
[0023] The lower template 1 has a U-shaped structure. The U-shaped structure design provides a stable support frame, which facilitates the installation and disassembly of the mold core 3 and enhances the overall rigidity. Three first positioning blocks 101 are provided on the top two sides of the lower template 1. The bottom of both ends of the mold core 3 are respectively provided with first positioning holes 302 corresponding to the first positioning blocks 101. The first positioning blocks 101 are set in the first positioning holes 302. The first positioning blocks 101 cooperate with the first positioning holes 302 at the bottom of the mold core 3 to achieve preliminary positioning and prevent the mold core 3 from shifting horizontally.
[0024] A pair of second positioning blocks 301 are provided on the top two sides of the mold core 3. The top two sides of the upper template 2 are respectively provided with second positioning holes 201 corresponding to the second positioning blocks 301. The second positioning blocks 301 cooperate with the second positioning holes 201 of the upper template 2 to achieve precise alignment of the upper and lower templates 1. A protrusion 202 is provided in the middle of the bottom of the upper template 2, and the protrusion 202 cooperates with the mold core 3.
[0025] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A mold core fixing device for mold production, comprising a lower template (1), characterized in that: The lower template (1) is provided with a mold core (3) inside; The lower template (1) has a pair of through holes (102) on both sides, and a mounting groove (103) is provided at one end of the pair of through holes (102). A nut (4) is provided inside the mounting groove (103), and a threaded rod (5) is fitted inside the nut (4). One end of the threaded rod (5) is provided with a plug (502); The mold core (3) has corresponding through holes (102) and limiting insertion holes (303) on both sides, and the insertion rod (502) is set in the limiting insertion hole (303).
2. The mold core fixing device for mold production according to claim 1, characterized in that, The lower template (1) has a U-shaped structure. Three first positioning blocks (101) are provided on the top two sides of the lower template (1). The bottom of both ends of the mold core (3) are respectively provided with first positioning holes (302) corresponding to the first positioning blocks (101). The first positioning blocks (101) are set in the first positioning holes (302).
3. A mold core fixing device for mold production according to claim 1, characterized in that, A pair of second positioning blocks (301) are provided on both sides of the top of the mold core (3).
4. A mold core fixing device for mold production according to claim 3, characterized in that, It also includes an upper template (2), on the top two sides of the upper template (2) respectively, a second positioning hole (201) corresponding to the second positioning block (301) is provided, and a protrusion (202) is provided in the middle of the bottom of the upper template (2), the protrusion (202) cooperates with the mold core (3).
5. A mold core fixing device for mold production according to claim 1, characterized in that, The other end of the threaded rod (5) is provided with a turntable (501).