Mold hook needle fixing mechanism

Abstract

The utility model provides a mould crochet fixed establishment relates to mould crochet technical field. This mould crochet fixed establishment, including big ladle, the bottom of big ladle is provided with four hook needle fixed slots of head -to -tail successive junction, the inside of hook needle fixed slot all slide installation has water gap crochet. Water gap crochet is constituted by fixed head, needle body and reverse body, and fixed head fixed mounting is at the top of needle body, and reverse body fixed mounting is at the bottom of needle body. Fixed head and needle body all set up as cylindrical structure, and the diameter of fixed head is greater than the diameter of needle body, and the cross section of hook needle fixed slot sets up as convex letter structure, and fixed head uses with hook needle fixed slot cooperation and slide installation is in the inside of hook needle fixed slot. This mould crochet fixed establishment, through setting up hook needle fixed slot in the bottom of big ladle, can complete the fixed operation of water gap crochet to water gap crochet to wear into hook needle fixed slot, and also will not be limited by the structure space inside mould, simple and convenient, is favorable to the practical application.

Description

Technical Field

[0001] This utility model relates to the field of mold hook technology, specifically a mold hook fixing mechanism. Background Technology

[0002] Sprue hooks are crucial components in injection molds for demolding. Their main function is to separate and extract solidified plastic parts from the mold runner, ensuring the smooth progress of the molding process. Sprue hooks are typically installed on the front mold platen and are driven to separate from the solidified plastic by a stripping mechanism. Their design must match the runner structure to ensure complete separation of the plastic during core pulling while preventing damage to mold components.

[0003] In general, sprue hooks in molds are fixed with headless screws. Small mold products use small nozzles, while large mold products require large nozzles. However, due to structural space limitations, the traditional headless screw fixing method cannot secure the hook to the large nozzle, which is not conducive to practical applications.

[0004] Therefore, those skilled in the art provide a mold hook fixing mechanism to solve the problems mentioned in the background art. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a mold hook fixing mechanism, which solves the problem mentioned in the background art that, due to structural space limitations, the hook cannot be fixed using the traditional headless screw fixing method for large nozzles.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a mold hook fixing mechanism, including a large nozzle, the bottom of which is provided with four hook fixing grooves connected end to end, and a sprue hook is slidably installed inside each of the hook fixing grooves.

[0007] The above technical solution involves creating a hook fixing groove at the bottom of the large nozzle, allowing the sprue hook to be inserted into the fixing groove to complete the fixing operation. This method is not limited by the internal structural space of the mold, making it simple, convenient, and beneficial for practical applications.

[0008] Preferably, the sprue hook consists of a fixing head, a needle body, and a buckle body. The fixing head is fixedly installed on the top of the needle body, and the buckle body is fixedly installed on the bottom of the needle body.

[0009] The above technical solution utilizes a fixed head, needle body, and inverted body to facilitate the better construction of a sprue hook.

[0010] Preferably, both the fixing head and the needle body are cylindrical, and the diameter of the fixing head is larger than the diameter of the needle body. The cross-section of the hook needle fixing groove is convex, and the fixing head is used in conjunction with the hook needle fixing groove and is slidably installed inside the hook needle fixing groove.

[0011] By using the above technical solution and the combination of the fixing head and the hook fixing groove, the needle body can be better installed at the bottom of the large nozzle.

[0012] Preferably, the buckle body is configured as a frustum-shaped structure, and the diameter of the end of the buckle body near the needle body is smaller than the diameter of the end of the buckle body away from the needle body.

[0013] The above technical solution utilizes a frustum-shaped structure to better leverage the function of the sprue hook.

[0014] Preferably, a positioning ring is fixedly installed on the outer side of the large nozzle, and positioning holes are equidistantly opened on the outer side of the positioning ring.

[0015] By utilizing the above technical solution, the positioning ring and positioning hole can be used to better fix the large nozzle on the mold for use.

[0016] Preferably, the top of the large nozzle extends above the positioning ring, and the bottom of the large nozzle is fixedly fitted with a nozzle end of an inverted frustum-shaped structure.

[0017] The above technical solution utilizes the nozzle tip to cooperate with the flow channel inside the mold, thereby realizing the injection molding operation.

[0018] Preferably, the depth of the hook fixing groove matches the height of the fixing head, and the two are in a clearance fit with a clearance of 0.02mm to 0.05mm.

[0019] The above technical solution facilitates the better installation of the sprue hook inside the hook fixing groove.

[0020] Preferably, the angle between the conical surface of the inverted body and the vertical direction is between ten and thirty degrees.

[0021] The above technical solution facilitates the formation of a frustum-shaped structure.

[0022] Preferably, the material of the sprue hook is hardened steel or cemented carbide.

[0023] The above technical solutions facilitate the increase of the structural strength of the sprue hook.

[0024] Preferably, the positioning hole is a threaded hole or a smooth hole.

[0025] The above technical solution facilitates its use with various installation tools.

[0026] This utility model provides a mold hook fixing mechanism, which has the following beneficial effects: This mold hook fixing mechanism fixes the sprue hook by opening a hook fixing groove at the bottom of the large nozzle, allowing the sprue hook to be inserted into the groove. This method is not limited by the internal structural space of the mold, making it simple, convenient, and beneficial for practical applications. Attached Figure Description

[0027] Figure 1 This is a first-view three-dimensional structural diagram of the present invention.

[0028] Figure 2 This is a second-view three-dimensional structural diagram of the present invention.

[0029] Figure 3 This is a schematic diagram of the large nozzle structure of this utility model.

[0030] Figure 4 This is a schematic diagram of the sprue hook structure of this utility model.

[0031] Figure 5 This is a cross-sectional view of the large nozzle of this utility model.

[0032] Figure 6 This is a schematic diagram showing the connection between the sprue hook and the flow channel of this utility model.

[0033] In the diagram: 1. Large nozzle; 2. Hook fixing groove; 3. Sprue hook; 31. Fixing head; 32. Needle body; 33. Inverted body; 4. Positioning ring; 5. End of nozzle; 6. Positioning hole. Detailed Implementation

[0034] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0035] Reference Figure 1 , Figure 2 , Figure 3 and Figure 5This utility model embodiment provides a mold hook fixing mechanism, including a large nozzle 1. The large nozzle 1 in the mold typically refers to a sprue bushing, also known as a sprue or gate nozzle, which is a metal fitting connecting the injection molding machine nozzle and the mold runner in an injection mold. The sprue bushing mainly guides molten plastic from the injection molding machine nozzle into the main runner of the mold, while also protecting the mold and improving processing accuracy. The bottom of the large nozzle 1 has four hook fixing grooves 2 connected end-to-end. Sprue hooks 3 are slidably installed inside each hook fixing groove 2. The sprue hooks 3 are made of hardened steel or cemented carbide to increase their structural strength. Sliding the sprue hooks 3 through the hook fixing grooves 2 avoids limitations imposed by the internal structural space of the mold, making it simple, convenient, and beneficial for practical applications. A positioning ring 4 is fixedly installed on the outer side of the large nozzle 1. Positioning holes 6 are equidistantly spaced on the outer side of the positioning ring 4. The positioning holes 6 are threaded holes or smooth holes, facilitating use with different installation tools. Simultaneously, the positioning ring 4 and positioning hole 6 effectively secure the large nozzle 1 to the mold. The top of the large nozzle 1 extends above the positioning ring 4, facilitating connection with the output port of the injection molding machine. An inverted frustum-shaped nozzle end 5 is fixedly installed at the bottom of the large nozzle 1, allowing it to engage with the flow channels inside the mold for injection molding.

[0036] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 and Figure 6 In one aspect of this embodiment, the sprue hook 3 comprises a fixing head 31, a needle body 32, and a buckle body 33. The fixing head 31 is fixedly mounted on the top of the needle body 32. Both the fixing head 31 and the needle body 32 are cylindrical, with the diameter of the fixing head 31 being larger than the diameter of the needle body 32. The cross-section of the hook fixing groove 2 is a convex shape. The fixing head 31 cooperates with and slides inside the hook fixing groove 2. This cooperation allows for better installation of the needle body 32 at the bottom of the large nozzle 1. The depth of the hook fixing groove 2 matches the height of the fixing head 31, with a clearance fit of 0.02mm to 0.05mm, facilitating better installation of the sprue hook 3 inside the hook fixing groove 2. The buckle body 33 is fixedly mounted on the bottom of the needle body 32. The undercut body 33 is designed as a frustum shape. The diameter of the end of the undercut body 33 near the needle body 32 is smaller than the diameter of the end of the undercut body 33 away from the needle body 32. The angle between the conical surface of the undercut body 33 and the vertical direction is 10 to 30 degrees, which facilitates the formation of a frustum shape. The undercut body 33 is used in conjunction with the runner inside the mold, and the frustum shape allows for better utilization of the sprue hook 3.

[0037] Working principle: In use, first install the large nozzle 1 onto the mold using the positioning ring 4 and positioning hole 6, and then slide the fixing head 31 inside the hook fixing groove 2, thereby installing the sprue hook 3 onto the large nozzle 1. Figure 1 As shown.

[0038] At the same time, the nozzle end 5 at the bottom of the large nozzle 1 is used in conjunction with the flow channel inside the mold, and the undercut body 33 is used in conjunction with the flow channel. Then, the output port of the external injection molding machine performs injection molding through the top of the large nozzle 1.

[0039] The entire fixing mechanism is completed by opening a hook fixing groove 2 at the bottom of the large nozzle 1, so that the sprue hook 3 can be inserted into the hook fixing groove 2 to complete the fixing operation of the sprue hook 3. At the same time, it is not limited by the internal structural space of the mold, which is simple and convenient and conducive to practical application.

[0040] 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 mold hook fixing mechanism, comprising a large nozzle (1), characterized in that, The bottom of the large nozzle (1) is provided with four hook fixing grooves (2) connected end to end, and a water inlet hook (3) is slidably installed inside each of the hook fixing grooves (2).

2. The mold hook fixing mechanism according to claim 1, characterized in that: The sprue hook (3) consists of a fixed head (31), a needle body (32) and a buckle body (33). The fixed head (31) is fixedly installed on the top of the needle body (32), and the buckle body (33) is fixedly installed on the bottom of the needle body (32).

3. The mold hook fixing mechanism according to claim 2, characterized in that: Both the fixing head (31) and the needle body (32) are cylindrical structures, and the diameter of the fixing head (31) is larger than the diameter of the needle body (32). The cross-section of the hook fixing groove (2) is a convex structure. The fixing head (31) is used in conjunction with the hook fixing groove (2) and is slidably installed inside the hook fixing groove (2).

4. The mold hook fixing mechanism according to claim 2, characterized in that: The inverted body (33) is configured as a frustum-shaped structure, and the diameter of the end of the inverted body (33) near the needle body (32) is smaller than the diameter of the end of the inverted body (33) away from the needle body (32).

5. The mold hook fixing mechanism according to claim 1, characterized in that: A positioning ring (4) is fixedly installed on the outer side of the large nozzle (1), and positioning holes (6) are equidistantly opened on the outer side of the positioning ring (4).

6. The mold hook fixing mechanism according to claim 5, characterized in that: The top of the large nozzle (1) extends above the positioning ring (4), and the bottom of the large nozzle (1) is fixedly installed with an inverted frustum-shaped nozzle end (5).

7. The mold hook fixing mechanism according to claim 2, characterized in that: The depth of the hook fixing groove (2) matches the height of the fixing head (31), and the two are in a clearance fit with a clearance of 0.02mm to 0.05mm.

8. The mold hook fixing mechanism according to claim 4, characterized in that: The angle between the conical surface of the inverted body (33) and the vertical direction is between ten and thirty degrees.

9. The mold hook fixing mechanism according to claim 1, characterized in that: The material of the sprue hook (3) is hardened steel or hard alloy.

10. The mold hook fixing mechanism according to claim 5, characterized in that: The positioning hole (6) is either a threaded hole or a smooth hole.

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