Injection mold of ball valve nut

Abstract

The utility model discloses an injection mold for a ball valve nut, which relates to the technical field of injection molds and comprises a mold base, a guide column, a first box body, a second box body, a third box body, a mold cover body and a forming cavity. And a first box body, a second box body, a third box body and a mold cover body are sequentially connected to the outer side of the guide column from bottom to top in a sleeving manner. Molten plastic can be injected into the forming cavity through an injection opening, a gear motor can drive a pinion to rotate when running, a large gear can be driven to rotate in a meshed mode when the pinion rotates, and a third gear can be driven to rotate in a meshed mode when the large gear rotates. And the fluidity of molten plastic can be improved, the molten plastic can be evenly distributed around the top of the nut forming cylinder, the precision of the formed ball valve nut is higher, and the appearance quality is better.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to an injection mold for a ball valve nut. Background Technology

[0002] The ball valve nut is an important component of a ball valve. It is usually used to fasten the ball, stem, or other connecting parts in the ball valve to ensure the sealing and stability of the ball valve. The ball valve nut is usually molded in one piece. The ball valve nut needs to be injection molded during the production process. The ball valve nut can be injection molded by injection mold. However, the existing injection molds still have certain defects in use.

[0003] In the existing technology, ball valve nut injection molds are key tools for producing ball valve nuts. They inject molten plastic material into the mold cavity through injection molding process, and after cooling and solidification, they form nut products with specific shapes and sizes. In the process of using traditional ball valve nut injection molds, the flow of molten plastic inside the molding cavity is relatively slow, which makes it difficult for the molten plastic to be evenly distributed around the top of the nut molding cylinder, resulting in insufficient precision of the molded ball valve nut. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold for a ball valve nut, so as to solve the problem of insufficient molding precision of injection molds currently on the market as mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold for a ball valve nut, comprising: a mold base, a guide post, a first box, a second box, a third box, a mold cover, and a molding cavity. The top of the mold base is connected to the guide post. The first box, the second box, the third box, and the mold cover are sequentially fitted onto the outer side of the guide post from bottom to top. The molding cavity is formed inside the mold cover. A reduction motor is installed on the outer side of the mold base. A pinion is installed at the output end of the reduction motor. A connecting post and a rotating rod are respectively installed on the surface of the mold base via bearings. A nut molding cylinder is installed on the outer side of the connecting post. A first gear is installed on the outer side of the nut molding cylinder. A second gear is installed on the outer side of the rotating rod near the first gear. A third gear is installed on the outer side of the rotating rod near the bottom of the second gear.

[0006] Preferably, the third gear and the small gear are meshed together with a large gear, and a pusher is installed on the inner side of the mold cover near the forming cavity.

[0007] Preferably, the third gear and the small gear are meshed together with a large gear, and a pusher is installed on the inner side of the mold cover near the forming cavity.

[0008] Preferably, the pusher frame is cross-shaped.

[0009] Preferably, the first gear and the second gear form a meshing structure.

[0010] Preferably, four sets of the nut forming cylinders are arranged symmetrically about the center of the mold base.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: The injection mold of the ball valve nut can inject molten plastic into the molding cavity through the injection port. When the reduction motor runs, it can drive the small gear to rotate. When the small gear rotates, it can mesh with and drive the large gear to rotate. When the large gear rotates, it can mesh with and drive the third gear to rotate. When the third gear rotates, it can drive the rotating rod and the second gear to rotate. When the second gear rotates, it can mesh with and drive the four sets of first gears to rotate. When the four sets of first gears rotate, they can drive the four sets of nut molding cylinders to rotate. When the four sets of nut molding cylinders rotate, the top of the nut molding cylinder can drive the molten plastic to rotate inside the molding cavity. At this time, the molten plastic inside the molding cavity can flow rapidly. The pusher can push the formed ball valve nut, thereby completing the unloading operation. By allowing the top of the nut molding cylinder to rotate inside the molding cavity, the fluidity of the molten plastic can be improved, so that the molten plastic can be evenly distributed around the top of the nut molding cylinder. Moreover, the formed ball valve nut will have higher precision and better appearance quality. Attached Figure Description

[0012] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0013] Figure 2 This is a schematic diagram of the exploded three-dimensional structure of this utility model;

[0014] Figure 3 This is a bottom-view perspective view of the mold cover of this utility model.

[0015] Figure 4 This is a three-dimensional structural diagram of the mold base of this utility model.

[0016] In the diagram: 1. Mold base; 2. Guide pillar; 3. First box; 4. Second box; 5. Third box; 6. Mold cover; 7. Molding cavity; 8. Gear motor; 9. Pinion; 10. Connecting pillar; 11. Rotating rod; 12. Nut molding cylinder; 13. First gear; 14. Second gear; 15. Third gear; 16. Large gear; 17. Pusher; 18. Injection port. Detailed Implementation

[0017] 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.

[0018] Please see Figures 1-4 It is understood that this utility model provides a technical solution: an injection mold for a ball valve nut, comprising: a mold base 1, a guide post 2, a first box 3, a second box 4, a third box 5, a mold cover 6, and a molding cavity 7. The top of the mold base 1 is connected to the guide post 2. The first box 3, the second box 4, the third box 5, and the mold cover 6 are sequentially sleeved on the outer side of the guide post 2 from bottom to top. The molding cavity 7 is opened inside the mold cover 6. A reduction motor 8 is installed on the outer side of the mold base 1. A pinion 9 is installed at the output end of the reduction motor 8. A connecting post 10 and a rotating rod 11 are respectively installed on the surface of the mold base 1 through bearings. A nut molding cylinder 12 is installed on the outer side of the connecting post 10. A first gear 1 is installed on the outer side of the nut molding cylinder 12. 3. A second gear 14 is installed on the outer side of the rotating rod 11 near the first gear 13. A third gear 15 is installed on the outer side of the rotating rod 11 near the bottom of the second gear 14. The third gear 15 and the small gear 9 are meshed together to form a large gear 16. A pusher 17 is installed on the inner side of the mold cover 6 near the molding cavity 7. The third gear 15 and the small gear 9 are meshed together to form a large gear 16. The pusher 17 is installed on the inner side of the mold cover 6 near the molding cavity 7. The pusher 17 is cross-shaped. The first gear 13 and the second gear 14 form a meshing structure. Four sets of nut forming cylinders 12 are symmetrically arranged about the center of the mold base 1. The nut forming cylinders 12 penetrate the inner sides of the first box 3, the second box 4 and the third box 5.

[0019] In practice, the ball valve nut injection mold is a special injection mold used to produce ball valve nuts. The molten plastic inside the ball valve nut injection mold flows relatively slowly, resulting in insufficient molding precision. Molten plastic is injected into the molding cavity 7 through the injection port 18. At this time, the reduction motor 8 can be started. When the reduction motor 8 runs, it drives the pinion 9 to rotate. When the pinion 9 rotates, it meshes with and drives the large gear 16 to rotate. When the large gear 16 rotates, it meshes with and drives the third gear 15 to rotate. When the third gear 15 rotates, it drives the rotating rod 11 and the second gear 14 to rotate. The second gear 14 rotates... When the four sets of first gears 13 are engaged, they can drive the four sets of nut forming cylinders 12 to rotate. When the four sets of nut forming cylinders 12 rotate, the top of the nut forming cylinders 12 can drive the molten plastic inside the forming cavity 7 to rotate. At this time, the molten plastic inside the forming cavity 7 can flow rapidly. After a certain period of time, the reduction motor 8 can be turned off to allow the molten plastic inside the forming cavity 7 to cool and solidify. A cylinder can be installed on the top of the mold cover 6. The cylinder is not shown in the figure. The cylinder can push the pusher 17. The pusher 17 can push the formed ball valve nut, thereby completing the unloading operation.

[0020] See Figures 1-4 It can be seen that by rotating the top of the nut forming cylinder 12 inside the forming cavity 7, the fluidity of the molten plastic can be improved, so that the molten plastic can be evenly distributed around the top of the nut forming cylinder 12, and the ball valve nut after forming will have higher precision and better appearance quality.

[0021] In summary, when using the injection mold of this ball valve nut, molten plastic can be injected into the molding cavity 7 through the injection port 18. At this time, the reduction motor 8 can be started. When the reduction motor 8 runs, it can drive the pinion 9 to rotate. When the pinion 9 rotates, it can mesh and drive the large gear 16 to rotate. The pusher 17 can push the molded ball valve nut, thereby completing the unloading operation. By allowing the top of the nut molding cylinder 12 to rotate inside the molding cavity 7, the fluidity of the molten plastic can be improved, so that the molten plastic can be evenly distributed around the top of the nut molding cylinder 12. Moreover, the precision of the molded ball valve nut will be higher and the appearance quality will be better. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An injection mold for a ball valve nut, comprising: The mold base (1), guide pillar (2), first box (3), second box (4), third box (5), mold cover (6), and molding cavity (7) are characterized in that: The top of the mold base (1) is connected to a guide post (2). The outer side of the guide post (2) is fitted with a first box (3), a second box (4), a third box (5) and a mold cover (6) from bottom to top. The mold cover (6) has a molding cavity (7) inside. A geared motor (8) is installed on the outside of the mold base (1). A small gear (9) is installed at the output end of the geared motor (8). A connecting column (10) and a rotating rod (11) are respectively installed on the surface of the mold base (1) through bearings. A nut forming cylinder (12) is installed on the outside of the connecting column (10). A first gear (13) is installed on the outside of the nut forming cylinder (12). A second gear (14) is installed on the outside of the rotating rod (11) near the first gear (13). A third gear (15) is installed on the outside of the rotating rod (11) near the bottom of the second gear (14).

2. The injection mold for a ball valve nut according to claim 1, characterized in that: The third gear (15) and the small gear (9) are connected by a large gear (16), and a pusher (17) is installed on the inner side of the mold cover (6) near the molding cavity (7).

3. The injection mold for a ball valve nut according to claim 1, characterized in that: An injection port (18) is connected to the outside of the mold cover (6).

4. The injection mold for a ball valve nut according to claim 2, characterized in that: The pusher frame (17) is cross-shaped.

5. The injection mold for a ball valve nut according to claim 1, characterized in that: The first gear (13) and the second gear (14) form a meshing structure.

6. The injection mold for a ball valve nut according to claim 1, characterized in that: The nut forming cylinder (12) has four sets arranged symmetrically about the center of the mold base (1).

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