Chain forming die

Abstract

The utility model belongs to the field of forming molds, and discloses a chain forming mold which comprises a connecting assembly used for being connected with injection molding equipment and further comprises a clamping assembly installed in the middle of the connecting assembly and used for clamping and fixing, and a mold core assembly used for conducting injection molding on two chain bodies at the same time is installed in the middle of the clamping assembly. The clamping assembly comprises a rear clamping block, a front clamping block is arranged in front of the rear clamping block, and an injection molding channel is formed in the middle of the front clamping block; the mold core assembly comprises a mold core mechanism used for surrounding all sides, forming cavities are formed in the mold core mechanism, the forming cavities are of two symmetrical structures, three independent lock chain cavities are formed in each set of forming cavities, and the injection molding channels communicate with the lock chain cavities correspondingly. According to the lock chain forming mold, two lock chain bodies (six chain links in total) are synchronously formed through one-time injection molding through the symmetrically designed mold core assemblies (two groups of molding cavities and three independent lock chain cavities in each group) and one mold with two cavities, so that the production efficiency is remarkably improved, and the cost of a single piece is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of molding dies, and in particular relates to chain molding dies. Background Technology

[0002] Chain forming dies are key pieces of equipment used in the production of metal chains, widely applied in industries such as hardware manufacturing, ship anchor chains, and lifting equipment. Through precision design and machining, they can efficiently and accurately form metal materials into chains of various specifications, ensuring the products possess excellent strength and durability. The die design prioritizes production efficiency, enabling high-speed continuous production and significantly reducing production costs. To accommodate different materials, the dies can also be specifically optimized, with corresponding structural improvements for materials such as stainless steel, carbon steel, or alloy steel.

[0003] However, in existing technologies, a double mold core plus single chain ring injection molding structure is generally used, which requires subsequent chain link connection, which seriously affects the speed and efficiency of chain production. Therefore, a new device needs to be designed. Summary of the Invention

[0004] The purpose of this invention is to provide a chain forming mold to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A chain molding die includes a connecting assembly for connecting to an injection molding machine, and a clamping assembly for clamping and fixing installed in the middle of the connecting assembly. A core assembly for simultaneously injection molding two chain bodies is installed in the middle of the clamping assembly. The clamping assembly includes a rear clamping block, a front clamping block in front of the rear clamping block, an injection runner in the middle of the front clamping block, and two side clamping blocks symmetrically arranged between the rear and front clamping blocks. The core assembly includes a mold core mechanism for four-sided enclosure, with molding cavities within the mold core mechanism. The molding cavities are arranged in two symmetrical sets, and each set of molding cavities contains three independent chain chambers. The injection runners communicate with the chain chambers respectively.

[0007] Furthermore: the connecting component includes a base, a discharge mechanism is provided inside the base, and a material injection mechanism is provided in front of the discharge mechanism.

[0008] Furthermore: the unloading mechanism includes a spring base, four limiting slides are evenly distributed at the four corners of the spring base, a return spring is installed on the limiting slides, and several push rods are evenly distributed in the middle of the spring base; the injection mechanism includes a top plate, an injection nozzle is installed in the middle of the top plate, and a pad is installed on the bottom surface of the top plate.

[0009] Furthermore, two limiting grooves are symmetrically arranged on both sides of the rear clamping block, and two limiting grooves are symmetrically arranged inside the front clamping block for positioning the side clamping blocks.

[0010] Furthermore: four limiting diagonal rods are evenly distributed in the middle of the front clamping block, and a limiting pressure plate is provided at the top of the limiting diagonal rods. The limiting pressure plate is bolted to the front clamping block.

[0011] Furthermore: the mold core mechanism includes a rear mold core disposed in the middle of the rear clamping block, a front mold core disposed in front of the rear mold core, and two side mold cores symmetrically disposed on both sides between the rear mold core and the front mold core.

[0012] Furthermore: the side clamping block and the side mold core are obliquely pressed together.

[0013] Compared with existing technologies, the beneficial effects are:

[0014] By using a symmetrically designed mold core assembly (two sets of molding cavities, each set with three independent chain chambers), two cavities are created in one mold, enabling simultaneous molding of two chain bodies (a total of six chain links) in a single injection, significantly improving production efficiency and reducing unit cost;

[0015] The side clamping block drives the side mold core to press towards the center through the inclined surface, and combined with the ejector pin to push the rear mold core, it forms a dynamic seal on four sides (front / rear / both sides) to ensure that there is no overflow during high-pressure injection molding of the molding cavity; the cooperation between the limiting inclined rod and the limiting slide enhances the positioning accuracy of the mold core and avoids the chain size deviation caused by offset;

[0016] The split mold core design (front / rear / side mold cores can be separated) further simplifies the part removal process and shortens the production cycle; modular components (such as detachable limit plates and bolt-connected clamping blocks) facilitate mold cleaning, maintenance and replacement of vulnerable parts, and reduce downtime. Attached Figure Description

[0017] Figure 1 This is an exploded view of the chain forming mold described in this utility model;

[0018] Figure 2 This is an external view of the chain forming mold described in this utility model;

[0019] Figure 3 This is an isometric view of the clamping assembly of the chain forming mold described in this utility model;

[0020] Figure 4 This is a rear axonometric view of the clamping assembly of the chain forming mold described in this utility model;

[0021] Figure 5 This is an exploded view of the core assembly of the chain forming mold described in this utility model;

[0022] Figure 6 This is a schematic diagram showing the connection between the chain body and the injection molding channel of the chain forming mold described in this utility model.

[0023] In the attached diagram, the following are the reference numerals: 101, base; 102, spring base; 103, limiting slide pin; 104, return spring; 105, ejector pin; 106, pad; 107, top plate; 108, injection nozzle; 201, rear clamping block; 202, front clamping block; 203, limiting inclined bar; 204, limiting pressure plate; 205, side clamping block; 206, injection runner; 207, limiting groove; 208, limiting slide groove; 301, front mold core; 302, rear mold core; 303, side mold core; 304, molding cavity; 4, chain body. 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 Figures 1-6 The chain forming mold includes a connecting component for connecting to an injection molding machine, and a clamping component installed in the middle of the connecting component for clamping and fixing, wherein a core component for simultaneous injection molding of two chain bodies 4 is installed in the middle of the clamping component.

[0026] In this embodiment: the connecting assembly includes a base 101, a material unloading mechanism is provided inside the base 101, and an injection mechanism is provided in front of the material unloading mechanism; the material unloading mechanism includes a spring base 102, four limiting slide pins 103 are evenly distributed at the four corners of the spring base 102, a return spring 104 is installed on the limiting slide pins 103, and a plurality of push rods 105 are evenly distributed in the middle of the spring base 102; the injection mechanism includes a top plate 107, an injection nozzle 108 is installed in the middle of the top plate 107, and a bottom surface of the top plate 107 is... The mold is equipped with a pad plate 106. During injection molding, the injection nozzle 108 in the middle of the top plate 107 passes through the pad plate 106 and injects the raw material into the injection channel 206 in the middle of the forward clamping block 202. The push rod 105 in the middle of the spring base 102 of the base 101 passes through the rear clamping block 201 and pushes the rear mold core 302 to ensure that the molding cavity 304 is sealed. After the injection molding is completed, the spring force of the return springs 104 at the four corners of the spring base 102 is released, pushing the rear clamping block 201 to slide and unload the material under the support of the limiting slide column 103.

[0027] In this embodiment: the clamping assembly includes a rear clamping block 201, a front clamping block 202 is provided in front of the rear clamping block 201, an injection molding channel 206 is provided in the middle of the front clamping block 202, and two side clamping blocks 205 are symmetrically arranged between the rear clamping block 201 and the front clamping block 202; two limiting grooves 208 are symmetrically arranged on both sides of the rear clamping block 201, and two limiting grooves 207 are symmetrically arranged in the front clamping block 202 for positioning the side clamping blocks 205; four limiting inclined rods 203 are evenly distributed in the middle of the front clamping block 202, and a limiting pressure plate 204 is provided at the top of the limiting inclined rods 203, which is bolted to the front clamping block 202; the front clamping block 202 is connected to the limiting pressure plate through the limiting pressure plate. The fixed limiting angle bar 203 is inserted into the side mold core 303 for limiting and fixing, and the front clamping block 202 fixes the side clamping block 205 through the limiting groove 207, so that the side clamping block 205 pushes the side mold core 303 along the limiting slide groove 208 of the rear clamping block 201 to press and fix it towards the center, and fits tightly with the rear mold core 302 in the middle of the rear clamping block 201. The push rod 105 in the middle of the spring base 102 passes through the rear clamping block 201 and pushes the rear mold core 302 to ensure that the molding cavity 304 is sealed. After the injection molding is completed, the rear clamping block 201 and the front clamping block 202 are disassembled to separate the front mold core 301, the rear mold core 302 and the side mold core 303, and the two molded chain bodies 4 can be taken out.

[0028] In this embodiment: the mold core assembly includes a mold core mechanism for four-sided enclosure, and a molding cavity 304 is provided in the mold core mechanism. The molding cavity 304 has two symmetrical structures, and each set of molding cavities 304 has three independent chain chambers. The injection channel 206 is connected to the chain chambers respectively. The mold core mechanism includes a rear mold core 302 located in the middle of the rear clamping block 201, a front mold core 301 located in front of the rear mold core 302, and two side mold cores 303 symmetrically arranged on both sides between the rear mold core 302 and the front mold core 301. The side clamping block 205 and the side mold cores 303 are obliquely slidably pressed together. The raw material passes through the injection channel 206 through the front mold core 301 and is injected into the two sets (a total of six) independent chain chambers of the molding cavity 304 formed by the front mold core 301, the rear mold core 302 and the side mold cores 303 respectively, to complete the injection molding of the chain body 4.

[0029] Working principle: During injection molding, the raw material is injected through the injection nozzle 108 in the middle of the top plate 107, through the injection channel 206 in the middle of the front clamping block 202 via the pad plate 106. The raw material passes through the injection channel 206 and through the front mold core 301, and is injected into the two sets (a total of six) independent chain cavities of the molding cavity 304 formed by the front mold core 301, the rear mold core 302, and the side mold core 303, respectively, to complete the injection molding of the chain body 4. At the same time, the front clamping block 202 is fixed by the limiting angle bar 203 fixed by the limiting pressure plate 204 and inserted into the side mold core 303 for limiting and fixing. Furthermore, the front clamping block 202 fixes the side clamping block 205 through the limiting groove 207, so that the side clamping block 205 passes through the limiting groove 207. The inclined plane pushes the side mold core 303 to press and fix it towards the center along the limiting slide groove 208 of the rear clamping block 201, and it fits tightly with the rear mold core 302 in the middle of the rear clamping block 201. The push rod 105 in the middle of the spring base 102 passes through the rear clamping block 201 and pushes the rear mold core 302 to ensure that the molding cavity 304 is sealed. After the injection is completed, the elastic force of the return springs 104 at the four corners of the spring base 102 is released, pushing the rear clamping block 201 to slide and unload under the support of the limiting slide column 103. Finally, the rear clamping block 201 and the front clamping block 202 are disassembled to separate the front mold core 301, the rear mold core 302 and the side mold core 303, and the two molded chain bodies 4 can be taken out.

[0030] 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 chain forming mold comprising a connection assembly for connecting to an injection molding apparatus, characterized by: It also includes a clamping component installed in the middle of the connecting component for clamping and fixing, and a core component for simultaneous injection molding of the two chain bodies (4) is installed in the middle of the clamping component. The clamping assembly includes a rear clamping block (201), a front clamping block (202) is provided in front of the rear clamping block (201), an injection channel (206) is provided in the middle of the front clamping block (202), and two side clamping blocks (205) are symmetrically arranged between the rear clamping block (201) and the front clamping block (202). The mold core assembly includes a mold core mechanism for four-sided enclosure, and a molding cavity (304) is provided in the mold core mechanism. The molding cavity (304) has two symmetrical structures, and each set of the molding cavity (304) has three independent chain chambers. The injection channel (206) is connected to the chain chambers respectively.

2. The chain forming mold according to claim 1, characterized in that: The connecting component includes a base (101), a discharge mechanism is provided inside the base (101), and an injection mechanism is provided in front of the discharge mechanism.

3. The chain forming die of claim 2, wherein: The unloading mechanism includes a spring base (102), four limiting slides (103) are evenly distributed at the four corners of the spring base (102), a return spring (104) is installed on the limiting slides (103), and several push rods (105) are evenly distributed in the middle of the spring base (102); the injection mechanism includes a top plate (107), an injection nozzle (108) is installed in the middle of the top plate (107), and a pad (106) is installed on the bottom surface of the top plate (107).

4. The chain forming die of claim 1, wherein: The rear clamping block (201) has two symmetrically arranged limiting grooves (208) on both sides, and the front clamping block (202) has two symmetrically arranged limiting grooves (207) for positioning the side clamping block (205).

5. The chain forming die of claim 4, wherein: The front clamping block (202) has four limiting diagonal rods (203) evenly distributed in the middle. The top of the limiting diagonal rod (203) is provided with a limiting pressure plate (204). The limiting pressure plate (204) and the front clamping block (202) are bolted together.

6. The chain forming die of claim 1, wherein: The mold core mechanism includes a rear mold core (302) disposed in the middle of the rear clamping block (201), a front mold core (301) disposed in front of the rear mold core (302), and two side mold cores (303) symmetrically disposed on both sides between the rear mold core (302) and the front mold core (301).

7. The chain forming mold according to claim 6, characterized in that: The side clamping block (205) and the side mold core (303) are obliquely pressed together.

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