A valve seat forming mold for valve seat production

Abstract

The utility model provides a valve seat forming mold for valve seat production, including an outer mold, an inner mold and an inner mold body, the outer mold is composed of two half molds with the same structure, and the two half molds are connected by a locking mechanism, the inner mold is composed of two first split inner molds and two second split inner molds, the inner mold body has two symmetrical rotation grooves, the inner grooves are both installed with a turntable, the turntable is symmetrically provided with two first limit grooves, the turntable is also symmetrically provided with two second limit grooves, and the first limit groove and the second limit groove are staggered, the first limit groove and the second limit groove are both installed with movable pins, the top and bottom ends of the movable pins are respectively passed through the top and bottom of the turntable, and the ends that pass through are connected with moving blocks, and the ends of the moving blocks away from the movable pins are all passed through the surface of the inner mold body. The utility model can complete the demoulding of the inner mold more conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of forming molds, in particular to a valve seat forming mold for valve seat production. Background Art

[0002] The valve seat is a removable surface component inside the valve, which is used to support the fully closed position of the valve core and form a sealing pair. Generally, the valve seat diameter is the maximum flow diameter of the valve. For example, the valve seat material of a butterfly valve is very wide, and all kinds of rubber, plastic, and metal materials can be used as valve seat materials.

[0003] When the valve seat is injection molded, demoulding is performed by hoisting or mechanical arms. Generally, demoulding is performed after the accessories have just been injection molded. When the injection molding is just completed and not completely solidified, the inner mold is directly lifted out by the hoisting equipment. Since the inner mold is tightly connected to the reinforcement component, demoulding is relatively difficult. At the same time, when the inner mold is lifted out, the friction and collision between the inner mold and the reinforcement component can easily cause damage to the reinforcement component after molding.

[0004] In summary, the utility model provides a valve seat forming die for producing a valve seat to solve the above problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a valve seat forming mold for valve seat production, so as to solve the problem in the prior art that inner mold demoulding is difficult and the reinforcing component is easily damaged during inner mold demoulding.

[0006] A valve seat forming mold for valve seat production, comprising an outer mold, an inner mold and an inner mold body, the outer mold is composed of two half molds with the same structure, and the two half molds are connected by a locking mechanism, the inner mold is composed of two first split inner molds and two second split inner molds, two rotating grooves are symmetrically arranged inside the inner mold body, a rotating disk is installed inside the rotating groove, two first limiting grooves are symmetrically arranged on the rotating disk, two second limiting grooves are also symmetrically arranged on the rotating disk, and the first limiting groove and the second limiting groove are staggered, and movable pins are installed in the first limiting groove and the second limiting groove, the top and bottom ends of the movable pins pass through the top and bottom of the rotating disk respectively, and the ends passing through are connected to moving blocks, the ends of the moving blocks away from the movable pins pass through the surface of the inner mold body, and the moving blocks at both ends of the movable pin in the first limiting groove are fixedly connected to the first split inner mold, and the moving blocks at both ends of the movable pin in the second limiting groove are fixedly connected to the second split inner mold.

[0007] Furthermore, a rotating shaft is rotatably installed at the inner center of the inner mold body, and the rotating shaft is fixedly connected to the two turntables. A rotating handle is installed on the top of the inner mold body, and the rotating handle is transmission-connected to the rotating shaft.

[0008] Furthermore, the first limiting groove is an arc-shaped groove, and the distance from one end of the first limiting groove to the center of the turntable is greater than the distance from the other end to the center of the turntable, and the second limiting groove is composed of two arc-shaped grooves, the two arc-shaped grooves are connected end to end, and the distance from both ends of one of the arc-shaped grooves to the center of the turntable is equal and greater than the distance from the other end of the other arc-shaped groove to the center of the turntable.

[0009] Furthermore, the top array of the inner mold body is provided with four lifting ears.

[0010] Furthermore, the size of the first split inner mold is smaller than the size of the second split inner mold.

[0011] Furthermore, the outer surface of the outer mold is provided with reinforcing ribs.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model uses the first limiting groove and the second limiting groove on the turntable, when the turntable rotates, the two first split inner molds are first separated from the reinforcing component during demoulding of the inner mold. In the initial stage of separation of the first split inner mold from the reinforcing component, the limiting column pin in the second limiting groove is still maintained in the arc groove with both ends equidistant from the center of the turntable, so the second split inner mold does not move. After the limiting column pin in the second limiting groove moves to another arc groove, the second split inner mold starts to separate from the reinforcing component, thereby maintaining a sufficient gap between the inner mold and the reinforcing component, which is convenient for demoulding the inner mold. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the inner mold of the utility model when it is unfolded;

[0017] Figure 4 This is a schematic diagram of the utility model when the inner mold is folded;

[0018] Figure 5 It is a plan view of the turntable in the utility model.

[0019] In the figure:

[0020] 1. Outer mold; 2. Inner mold; 3. Inner mold body; 4. Locking mechanism; 5. First split inner mold; 6. Second split inner mold; 7. Rotating groove; 8. Turntable; 9. First limiting groove; 10. Second limiting groove; 11. Movable pin; 12. Moving block; 13. Rotating shaft; 14. Turning handle; 15. Lifting ear; 16. Reinforcing rib. DETAILED DESCRIPTION

[0021] The following is a further detailed description of the implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but cannot be used to limit the scope of the present invention.

[0022] like Figure 1-5 As shown, the utility model provides a valve seat forming mold for valve seat production, including an outer mold 1, an inner mold 2 and an inner mold body 3, the outer mold 1 is composed of two half molds with the same structure, and the two half molds are connected by a locking mechanism 4, the locking mechanism 4 is a locking structure, the inner mold 2 is composed of two first split inner molds 5 and two second split inner molds 6, the inner mold body 3 has two rotating grooves 7 symmetrically arranged inside, the rotating grooves 7 are both installed with a rotating disk 8, the rotating disk 8 is symmetrically provided with two first limiting grooves 9, the rotating disk 8 is also symmetrically provided with two second limiting grooves 10, and the first The limiting grooves 9 and the second limiting grooves 10 are staggered, and movable pins 11 are installed in the first limiting grooves 9 and the second limiting grooves 10. The top and bottom ends of the movable pins 11 pass through the top and bottom of the turntable 8 respectively, and the ends that pass through are connected to moving blocks 12. The ends of the moving blocks 12 away from the movable pins 11 pass through the surface of the inner mold body 3, and the moving blocks 12 at both ends of the movable pin 11 in the first limiting grooves 9 are fixedly connected to the first split inner mold 5, and the moving blocks 12 at both ends of the movable pin 11 in the second limiting grooves 10 are fixedly connected to the second split inner mold 6.

[0023] Among them, a rotating shaft 13 is rotatably installed at the inner center of the inner mold body 3, and the rotating shaft 13 is fixedly connected to the two turntables 8. A rotating handle 14 is installed on the top of the inner mold body 3, and the rotating handle 14 is transmission-connected to the rotating shaft 13, and the rotating handle 14 drives the rotating shaft 13 to rotate.

[0024] Among them, the first limiting groove 9 is an arc groove, and the distance from one end of the first limiting groove 9 to the center of the turntable 8 is greater than the distance from the other end to the center of the turntable 8. The second limiting groove 10 is composed of two arc grooves, the two arc grooves are connected end to end, and the distances from both ends of one of the arc grooves to the center of the turntable 8 are equal, and greater than the distance from the other end of the other arc groove to the center of the turntable 8. When the turntable 8 rotates, the first limiting groove 9 first drives the first split inner mold 5 to separate from the reinforcing member. In the initial stage of separation of the first split inner mold 5 from the reinforcing member, since the limiting pin in the second limiting groove 10 is still maintained in the arc groove with both ends equal to the center of the turntable 8, the second split inner mold 6 will not move. After the limiting pin in the second limiting groove 10 moves to another arc groove, the second split inner mold 6 begins to separate from the reinforcing member, thereby maintaining a sufficient gap between the inner mold 2 and the reinforcing member, which is convenient for demolding the inner mold 2.

[0025] Among them, the top array of the inner mold body 3 is provided with four lifting ears 15, which is convenient for lifting the inner mold body 3.

[0026] The size of the first split inner mold 5 is smaller than that of the second split inner mold 6 , and the outer surface of the outer mold 1 is provided with reinforcing ribs 16 to enhance the strength of the outer mold 1 .

[0027] Specific working principle:

[0028] When the utility model is in use, first, the two half molds of the outer mold 1 are combined into a whole through the locking mechanism 4, and then the inner mold body 3 is lifted to the center of the outer mold 1 by the lifting ear 15 using the lifting equipment. After the lifting is completed, the injection molding material is poured between the inner mold 2 and the outer mold 1, and the reinforcing component is formed in the center of the inner mold 2 and the outer mold 1. After the reinforcing component has a certain strength, the rotating handle 14 is first rotated to drive the two turntables 8 to rotate. When the turntable 8 rotates, the first limiting groove 9 first drives the two first split inner molds 5 to separate from the reinforcing component. After the first split inner mold 5 is separated from the reinforcing component by a certain distance, the second limiting groove 10 drives the second split inner mold 6 and the first split inner mold 5 to move away from the reinforcing component, so that there is enough space between the inner mold 2 and the reinforcing component, so that the inner mold body 3 is lifted out of the reinforcing component inner mold 2 to complete the demoulding of the inner mold 2. After the demoulding of the inner mold 2 is completed, the locking mechanism 4 is opened to disassemble the two half molds of the outer mold 1 to complete the demoulding of the outer mold 1.

[0029] The implementation modes of the present invention are provided for the purpose of illustration and description. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A valve seat forming mold for valve seat production, comprising an outer mold (1), an inner mold (2) and an inner mold body (3), wherein the outer mold (1) is composed of two half molds of the same structure, and the two half molds are connected by a locking mechanism (4), characterized in that: The inner mold (2) is composed of two first split inner molds (5) and two second split inner molds (6). Two rotating grooves (7) are symmetrically provided inside the inner mold body (3). A rotating disk (8) is installed inside each of the rotating grooves (7). Two first limiting grooves (9) are symmetrically provided on each of the rotating disks (8). Two second limiting grooves (10) are symmetrically provided on each of the rotating disks (8). The first limiting grooves (9) and the second limiting grooves (10) are staggered. A movable pin ( 11), the top and bottom ends of the movable column pin (11) respectively pass through the top and bottom of the turntable (8), and the ends that pass through are connected to a moving block (12), and the ends of the moving blocks (12) that are away from the movable column pin (11) pass through the surface of the inner mold body (3), and the moving blocks (12) at both ends of the movable column pin (11) in the first limiting groove (9) are fixedly connected to the first split inner mold (5), and the moving blocks (12) at both ends of the movable column pin (11) in the second limiting groove (10) are fixedly connected to the second split inner mold (6).

2. A valve seat forming mold for valve seat production as claimed in claim 1, characterized in that: A rotating shaft (13) is rotatably mounted at the inner center of the inner mold body (3), and the rotating shaft (13) is fixedly connected to the two rotating disks (8). A rotating handle (14) is mounted on the top of the inner mold body (3), and the rotating handle (14) is transmission-connected to the rotating shaft (13).

3. The valve seat forming mold for valve seat production according to claim 1, characterized in that: The first limiting groove (9) is an arc-shaped groove, and the distance from one end of the first limiting groove (9) to the center of the turntable (8) is greater than the distance from the other end of the first limiting groove (9) to the center of the turntable (8), and the second limiting groove (10) is composed of two arc-shaped grooves, the two arc-shaped grooves are connected end to end, and the distances from both ends of one of the arc-shaped grooves to the center of the turntable (8) are equal and greater than the distance from the other end of the other arc-shaped groove to the center of the turntable (8).

4. A valve seat forming mold for valve seat production as claimed in claim 1, characterized in that: The top array of the inner mold body (3) is provided with four lifting ears (15).

5. The valve seat forming mold for valve seat production according to claim 1, characterized in that: The size of the first split inner mold (5) is smaller than the size of the second split inner mold (6).

6. The valve seat forming mold for valve seat production according to claim 1, characterized in that: The outer surface of the outer mold (1) is provided with reinforcing ribs (16).

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