A ball valve mold with eight cavities in one mold

Abstract

The utility model discloses a ball valve mold with eight cavities in one mold, belonging to the technical field of injection molds, which includes a fixed mold, a movable mold, a forming mold, and an oil cylinder core-pulling component. A groove is provided in the middle below the fixed mold; the movable mold is arranged below the fixed mold, and a groove is provided in the middle of the upper part of the movable mold; the forming mold is divided into an upper mold and a lower mold, and the upper mold and the lower mold are respectively arranged in the grooves of the fixed mold and the movable mold to form a forming cavity; the oil cylinder core-pulling component includes a fixed frame, an oil cylinder, a ejector rod, a connecting plate, and an oil cylinder core. The fixed frame is arranged in the middle outside the fixed mold and the movable mold, the oil cylinder is arranged in the middle of the outer end of the fixed frame, the ejector rod is connected to the oil cylinder, the connecting plate is connected to the ejector rod, and the oil cylinder core is arranged on the connecting plate and extends into the forming cavity. The utility model is provided with an oil cylinder core-pulling component, and the oil cylinder core passes through the forming cavity to form a product through-hole structure. Eight products are produced in one mold closing, and the demolding is fast, which improves the production efficiency and the product quality.

Description

Technical Field

[0001] This utility model relates to the field of injection mold technology, specifically to a ball valve mold with eight cavities. Background Technology

[0002] A ball valve is a pipeline accessory used to switch pipelines on and off, control flow direction, and regulate and control the parameters of the conveyed medium. A ball valve is a valve in which the opening and closing element (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for the regulation and control of fluids.

[0003] However, in the existing technology, ball valves, as a type of valve, have good sealing performance and are easy to open and close. With the rapid development of industrial level, the application range of ball valves is becoming more and more widespread. The ball valve body is usually processed by injection molding. However, the existing injection molding process has low production efficiency and low production quality, resulting in a coarse parting line. This leads to a large torque on the ball valve body after assembly, which affects its use. Utility Model Content

[0004] The purpose of this utility model is to provide a ball valve mold with eight cavities in one mold to solve the above problems. The mold adopts eight cavities in one mold and is used in conjunction with a hydraulic cylinder for core pulling, which improves production efficiency and production quality.

[0005] Technical Solution: This utility model provides a ball valve mold with eight cavities, including: a fixed mold, a moving mold, a forming mold, and a cylinder core-pulling assembly. The fixed mold has a groove in the middle of its lower part; the moving mold is located below the fixed mold and has a groove in the middle of its upper part; the forming mold is divided into an upper mold and a lower mold, which are respectively located in the grooves of the fixed mold and the moving mold, and the upper mold and the lower mold are closed to form a forming cavity. The forming cavity has two groups arranged in two rows, with four cavities in each group; the cylinder core-pulling assembly includes a fixed frame, a cylinder, a push rod, a connecting plate, and a cylinder core. The fixed frame is located in the middle of the outer side of the fixed mold and the moving mold, the cylinder is located in the middle of the outer end of the fixed frame, the push rod is connected to the cylinder, the connecting plate is connected to the push rod, and the cylinder core is located on the connecting plate and extends into the middle of the forming cavity for forming the through hole of the ball valve.

[0006] Furthermore, in the aforementioned ball valve mold with eight cavities, a guide post is provided between the fixed mold and the moving mold.

[0007] Furthermore, in the aforementioned ball valve mold with eight cavities, inclined guide pillars are provided on both sides of the forming mold between the fixed mold and the moving mold.

[0008] Furthermore, in the aforementioned ball valve mold with eight cavities, an injection hole is provided in the middle of the upper part of the fixed mold, and an injection flow channel is connected below the injection hole, which then flows into each molding cavity.

[0009] Furthermore, in the aforementioned ball valve mold with eight cavities, the molding cavities are arranged symmetrically in two sets, and ejector pins are provided on both sides of the molding cavities as molding structures for the tail holes of the ball valve.

[0010] Furthermore, in the aforementioned ball valve mold with eight cavities, the fixed mold and the moving mold are provided with pads.

[0011] Furthermore, in the aforementioned ball valve mold with eight cavities, a spring is provided inside the moving mold, and a demolding ejector pin is provided inside the spring.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects: The ball valve mold with eight cavities in one mold set has eight molding cavities. By setting a cylinder core-pulling assembly, the cylinder core is passed through the molding cavity to form the through hole structure in the middle of the ball valve body. After production, the cylinder core is pulled out, and the product is demolded by the spring and demolding top in the moving mold. Eight products are produced by injection molding at one time. Demolding is rapid. After demolding, the cylinder core continues to extend. Then the mold is closed and the next production can be carried out. This effectively improves production efficiency. Moreover, the fixed mold, moving mold and molding mold are closely matched, and the guide post and inclined guide post ensure accurate positioning, which improves product quality. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a ball valve mold with eight cavities in one mold according to the present invention;

[0014] Figure 2 This is a top view of a ball valve mold with eight cavities according to the present invention;

[0015] Figure 3 This is a side view of a ball valve mold with eight cavities according to the present invention;

[0016] Figure 4 This is a schematic diagram of the internal structure of the molding die of this utility model.

[0017] In the diagram: 1. Fixed mold; 2. Moving mold; 3. Molding mold; 4. Hydraulic cylinder core-pulling assembly; 5. Guide pillar; 6. Angled guide pillar; 7. Pad; 11. Injection hole; 21. Spring; 22. Ejector pin; 31. Upper mold; 32. Lower mold; 33. Molding cavity; 41. Fixing frame; 42. Hydraulic cylinder; 43. Ejector rod; 44. Connecting plate; 45. Hydraulic cylinder center; 331. Detailed Implementation

[0018] Example

[0019] like Figure 1-4The ball valve mold shown includes: a fixed mold 1, a moving mold 2, a forming mold 3, and a cylinder core-pulling assembly 4. The fixed mold 1 has a groove in the center of its lower part. The moving mold 2 is located below the fixed mold 1, and has a groove in the center of its upper part. The forming mold 3 is divided into an upper mold 31 and a lower mold 32, which are respectively located in the grooves of the fixed mold 1 and the moving mold 2. When the upper mold 31 and the lower mold 32 are closed, a forming cavity 33 is formed in the middle. The forming cavity 33 has two sets. Two rows of four cylinders are arranged in each group. The cylinder core-pulling assembly 4 includes a fixed frame 41, a cylinder 42, an ejector rod 43, a connecting plate 44, and a cylinder core 45. The fixed frame 41 is located on the outer middle of the fixed mold 1 and the moving mold 2. The cylinder 42 is located on the outer middle of the fixed frame 41. The ejector rod 43 is connected to the cylinder 42, and the connecting plate 44 is connected to the ejector rod 43. The cylinder core 45 is located on the connecting plate 44 and extends into the middle of the forming cavity 33 for forming the through hole of the ball valve. A set of molds has eight forming cavities 33. By setting up the cylinder core-pulling assembly 4, the cylinder core 45 is passed through the forming cavity 33 to form the through hole structure in the middle of the ball valve body. Before each injection molding, the cylinder core 45 extends into the forming cavity 33, the mold closes, and after molding, the cylinder core 45 is pulled out, and the product is ejected and demolded, which improves production efficiency.

[0020] like Figure 1 , 2 The illustration shows an eight-cavity ball valve mold. A guide post 5 is provided between the fixed mold 1 and the moving mold 2; slanted guide posts 6 are provided on both sides of the forming mold 3 between the fixed mold 1 and the moving mold 2. The fixed mold 1, moving mold 2, and forming mold 3 fit together tightly, and the guide posts 6 and slanted guide posts 7 ensure accurate positioning, thus improving product quality.

[0021] like Figure 2 The ball valve mold shown is a type of mold with eight cavities. An injection hole 11 is provided in the middle of the upper part of the fixed mold 1. An injection channel is connected to the lower part of the injection hole 11 and the flow is divided into each molding cavity 33.

[0022] In this embodiment, the two sets of forming cavities 33 are symmetrically arranged, and ejector pins 331 are provided on both sides of the forming cavity 33 as forming structures for the tail hole of the ball valve.

[0023] like Figure 3 , 4 The ball valve mold shown is a single-mold, eight-cavity mold, in which a pad 7 is provided outside the fixed mold 1 and the moving mold 2. This pad serves as a liner when the fixed mold 1 and the moving mold 2 are closed and pressed together, reducing damage to the mold itself and improving its service life.

[0024] In this embodiment, a spring 21 is provided inside the moving mold 2, and a demolding ejector pin 22 is provided inside the spring 21. When the mold is opened, after the cylinder 45 is pulled out, the spring 21 rebounds the demolding ejector pin 22. The demolding ejector pin 22 is cylindrical and there are 4 of them. Each one is aligned with two forming cavities 33 on one side, and each ejects two products.

[0025] It should be noted that the above description is merely a technical solution of the utility model and not a limitation. Although the present utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of the utility model without departing from the scope of the present utility model, and all such modifications and substitutions should be covered within the scope of the claims of the present utility model.

Claims

1. A mold for an eight-hole ball valve, characterized by: include: A fixed mold (1) is provided with a groove in the middle of its lower part; The moving mold (2) is located below the fixed mold (1), and a groove is provided in the middle of the upper part of the moving mold (2); The molding mold (3) is divided into an upper mold (31) and a lower mold (32). The upper mold (31) and the lower mold (32) are respectively set in the grooves of the fixed mold (1) and the moving mold (2). The upper mold (31) and the lower mold (32) are closed to form a molding cavity (33). The molding cavity (33) has two groups arranged in two rows, with four in each group. The hydraulic cylinder core-pulling assembly (4) includes a fixed frame (41), a hydraulic cylinder (42), a push rod (43), a connecting plate (44), and a hydraulic cylinder core (45). The fixed frame (41) is located in the middle of the outer side of the fixed mold (1) and the moving mold (2). The hydraulic cylinder (42) is located in the middle of the outer end of the fixed frame (41). The push rod (43) is connected to the hydraulic cylinder (42). The connecting plate (44) is connected to the push rod (43). The hydraulic cylinder core (45) is located on the connecting plate (44) and extends into the middle of the forming cavity (33) for forming the ball valve through hole.

2. A one mold eight hole ball valve mold according to claim 1, characterized in that: A guide post (5) is provided between the fixed mold (1) and the moving mold (2).

3. A one mold eight hole ball valve mold according to claim 1, characterized in that: The fixed mold (1) and the moving mold (2) are provided with inclined guide pillars (6) on both sides of the forming mold (3).

4. A one mold eight hole ball valve mold according to claim 1, characterized in that: An injection hole (11) is provided in the middle of the upper part of the fixed mold (1). The injection hole (11) is connected to the injection flow channel below and flows into each molding cavity (33).

5. A one mold eight hole ball valve mold according to claim 1, characterized in that: The molding cavity (33) is arranged in two symmetrical sets, and ejector pins (331) are provided on both sides of the molding cavity (33) as the molding structure of the tail hole of the ball valve.

6. A one mold eight hole ball valve mold according to claim 1, characterized in that: The fixed mold (1) and the moving mold (2) are provided with a pad (7).

7. A one-piece eight-port ball valve mold according to claim 1, wherein: A spring (21) is provided inside the moving mold (2), and a demolding ejector pin (22) is provided inside the spring (21).

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