Injection mold sprue bush convenient to disassemble and assemble

Abstract

The utility model relates to the field of injection molds, in particular to an injection mold sprue bush convenient to disassemble and assemble, which comprises an injection mold body, a sprue bush body and a positioning ring body are sequentially inserted at an injection opening of the injection mold body, and four extension blocks are equidistantly mounted on the periphery of the outer wall of the positioning ring body. A fixing ring base is fixedly installed at the position, located outside the positioning ring body, of one end of the injection mold body, a clamping sliding groove is formed in the position, located at the extending block, in the fixing ring base, and a limiting assembly is arranged in the fixing ring base. According to the utility model, the fixed ring seat is matched with the limiting component, so that a user can conveniently and quickly disassemble and assemble the sprue bush, the whole disassembly and assembly process is convenient and fast, and any external tool is not needed.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, and in particular to a gate sleeve for injection molds that is easy to disassemble and assemble. Background Technology

[0002] A sprue bushing is a runner component that allows molten plastic material to be injected from the nozzle of an injection molding machine into the mold. It is a metal fitting used to connect the molding die to the injection molding machine.

[0003] In the process of disassembling and assembling existing sprue bushings, positioning rings and bolts are generally used to fix the interface. The bolts can prevent the sprue bushing from falling off due to excessive injection pressure. However, the bolts are not convenient for disassembling and replacing the mold sprue bushing, and appropriate tools are required for disassembly. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a gate sleeve for injection molds that is easy to assemble and disassemble.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A gate sleeve for injection mold that is easy to assemble and disassemble includes an injection mold body. A gate sleeve body and a positioning ring body are sequentially inserted into the injection port of the injection mold body. Four extension blocks are installed at equal intervals around the outer wall of the positioning ring body. A fixing ring seat is fixedly installed at one end of the injection mold body outside the positioning ring body. A locking groove is opened in the fixing ring seat at the extension block. A limit component is provided in the fixing ring seat.

[0007] The limiting component includes a limiting ring, with an inlet / outlet groove provided inside the limiting ring at the extension block, and a locking component provided on the outer wall of the limiting ring at the corresponding inlet / outlet groove. The limiting ring and the fixed ring seat are limited by the locking component.

[0008] In addition, a preferred structure is that the locking assembly includes an extension rod, one side of which is connected to a limiting ring, and the other side of which has a groove in which a spring body is placed.

[0009] In addition, a preferred structure is that one end of the spring body is connected to the inner wall of the groove, the other end of the spring body is connected to an I-shaped fixing block, and a movable plate is sleeved on the outside of the I-shaped fixing block.

[0010] Furthermore, in a preferred configuration, the movable plate is symmetrically fitted with limiting rods on one side of the limiting ring and at both ends of the extension rod.

[0011] Furthermore, in a preferred configuration, a groove is provided inside the fixed ring seat at the extension rod, and a first slot and a second slot are respectively provided on both sides of the corresponding groove outside the fixed ring seat, with the first slot and the groove being parallel to each other.

[0012] Furthermore, in a preferred configuration, the cross-sectional areas of the first and second card slots are both consistent with the cross-sectional area of ​​the limiting insert.

[0013] The beneficial effects of this utility model are as follows:

[0014] In this invention, the fixed ring seat combined with the limiting component makes it easy for users to quickly assemble and disassemble the sprue sleeve, and the entire assembly and disassembly process is convenient and does not require the use of any external tools. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a gate sleeve for an injection mold that is easy to assemble and disassemble, as proposed in this utility model;

[0016] Figure 2 This is a schematic diagram of a partially disassembled sprue sleeve for an injection mold, which is easy to assemble and disassemble according to the present invention.

[0017] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0018] Figure 4 This is a structural diagram showing the disassembled fixed ring seat and limiting assembly.

[0019] In the diagram: 1. Injection mold body; 2. Positioning ring body; 21. Extension block; 3. Fixing ring seat; 31. First slot; 32. Second slot; 4. Limiting component; 41. Limiting ring; 411. Inlet / outlet slide; 42. Locking component; 421. Movable plate; 422. Limiting rod; 423. I-shaped fixing block; 424. Extension rod; 425. Spring body; 5. Sprue sleeve body. 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 of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Reference Figure 1-4A gate sleeve for injection molds that is easy to assemble and disassemble includes 1. an injection mold body 1. The injection mold body 1 is characterized in that a gate sleeve body 5 and a positioning ring body 2 are sequentially inserted into the injection port of the injection mold body 1. Four extension blocks 21 are installed at equal intervals around the outer wall of the positioning ring body 2. A fixing ring seat 3 is fixedly installed at one end of the injection mold body 1 outside the positioning ring body 2. A locking groove is opened in the fixing ring seat 3 at the extension block 21. A limit component 4 is provided in the fixing ring seat 3.

[0022] The limiting component 4 includes a limiting ring 41. An inlet / outlet groove 411 is provided inside the limiting ring 41 at the extension block 21. A locking component 42 is provided on the outer wall of the limiting ring 41 at the corresponding inlet / outlet groove 411. The limiting ring 41 and the fixed ring seat 3 are limited by the locking component 42.

[0023] Furthermore, the locking assembly 42 includes an extension rod 424, one side of which is connected to the limiting ring 41, and the other side of which has a groove in which a spring body 425 is placed.

[0024] Meanwhile, one end of the spring body 425 is connected to the inner wall of the groove, and the other end of the spring body 425 is connected to an I-shaped fixing block 423, and an movable plate 421 is sleeved on the outside of the I-shaped fixing block 423.

[0025] Furthermore, the movable plate 421 is symmetrically equipped with limit rods 422 on one side of the limit ring 41 and at both ends of the extension rod 424.

[0026] Furthermore, a groove is provided inside the fixed ring seat 3 at the extension rod 424, and a first slot 31 and a second slot 32 are respectively provided on both sides of the corresponding groove on the outside of the fixed ring seat 3, and the first slot 31 is parallel to the slot.

[0027] Meanwhile, the cross-sectional areas of the first slot 31 and the second slot 32 are consistent with the cross-sectional area of ​​the limiting rod 422.

[0028] It is worth noting that the specific structure, connection method and working principle of the injection mold body 1, the positioning ring body 2 and the sprue sleeve body 5 are all existing technologies that are currently publicly available on the market, and are not the main technical problems to be solved in this utility model, so they will not be described in detail here.

[0029] Furthermore, it is worth noting that the cross-sectional areas of the slotted groove and the inlet / outlet groove are both larger than the cross-sectional area of ​​the extension block. After the sprue sleeve body 5 and the positioning ring body 2 are sequentially inserted into the injection mold, one end of the positioning ring body 2 is attached to the end face of the injection mold body 1, and the other side is attached to the limiting ring 41. At the same time

[0030] In this embodiment, by aligning the inlet and outlet groove of the limiting ring 41 with the locking groove of its fixing ring seat 3, and inserting the sprue sleeve body 5 and the positioning ring body 2 into the injection mold in sequence, until one end of the positioning ring body 2 is in contact with the end face of the injection mold body 1 and the other side is in contact with the limiting ring 41.

[0031] Next, hold the I-shaped fixing block 423 and move it away from the positioning ring body 2 until the limiting rod 422 is away from the fixing ring seat 3. Then rotate the movable plate 421 until the limiting rod 422 is aligned with the slide groove. Then release the I-shaped fixing block 423. Under the action of the spring body 425, the I-shaped fixing block 423 moves towards the extension rod 424 until one end of the I-shaped fixing block 423 is in contact with the extension rod 424 and its limiting rod 422 is located in the slide groove. Then rotate the limiting ring 41 until its locking component 42 is located in the second locking groove 32.

[0032] Then, hold the I-shaped fixing block 423 and move it away from the positioning ring body 2 until the limiting rod 422 moves away from the fixing ring seat 3. Then rotate the movable plate 421 until the limiting rod 422 is aligned with the second slot 31. Then release the I-shaped fixing block 423. Under the action of the spring body 425, the I-shaped fixing block 423 moves towards the extension rod 424 until one end of the I-shaped fixing block 423 is in contact with the extension rod 424, so that it moves away from the locking groove 411 and its limiting rod 422 is inserted into the second slot 31. At this time, its movement in and out of the groove and the locking groove are in an interleaved state. While the extension block is limiting, it also limits the positioning ring body 2 and the gate sleeve body 5.

[0033] In this utility model, the fixed ring seat 3 and the limiting component 4 make it easy for users to quickly disassemble and assemble the sprue sleeve, and the whole disassembly and assembly process is convenient and does not require the use of any external tools.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A sprue bush for injection mold which is easy to assemble and disassemble, comprising an injection mold body (1), characterized in that, The injection mold body (1) is sequentially connected to the injection port of the injection mold body (5) and the positioning ring body (2). Four extension blocks (21) are installed at equal intervals around the outer wall of the positioning ring body (2). A fixing ring seat (3) is fixedly installed at one end of the injection mold body (1) outside the positioning ring body (2). A locking groove is opened in the fixing ring seat (3) at the extension block (21). A limit component (4) is provided in the fixing ring seat (3). The limiting component (4) includes a limiting ring (41), and an inlet / outlet groove (411) is provided inside the limiting ring (41) at the extension block (21). A locking component (42) is provided on the outer wall of the limiting ring (41) at the corresponding inlet / outlet groove (411). The limiting ring (41) and the fixed ring seat (3) are limited by the locking component (42).

2. The sprue sleeve for injection molds that is easy to assemble and disassemble according to claim 1, characterized in that, The locking assembly (42) includes an extension rod (424), one side of which is connected to a limiting ring (41), and the other side of which has a groove in which a spring body (425) is placed.

3. The sprue sleeve for injection molds that is easy to assemble and disassemble according to claim 2, characterized in that, One end of the spring body (425) is connected to the inner wall of the groove, and the other end of the spring body (425) is connected to an I-shaped fixing block (423), and a movable plate (421) is sleeved on the outside of the I-shaped fixing block (423).

4. The sprue bushing according to claim 3, wherein The movable plate (421) is symmetrically equipped with limit rods (422) on one side of the limit ring (41) and at both ends of the extension rod (424).

5. The sprue bushing according to claim 1, wherein The fixed ring seat (3) has a sliding groove at the extension rod (424) inside, and a first slot (31) and a second slot (32) are respectively opened on both sides of the corresponding sliding groove outside the fixed ring seat (3), and the first slot (31) and the sliding groove are parallel to each other.

6. The sprue bushing for injection mold according to claim 5, wherein The cross-sectional areas of the first slot (31) and the second slot (32) are consistent with the cross-sectional area of ​​the limiting rod (422).

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