Forging and pressing device for valve rod machining

Abstract

The utility model provides a forging and pressing device for valve rod machining, which comprises a forging and pressing seat, the upper surface of the forging and pressing seat is sunken downwards to form an arc-shaped groove, a forming groove is machined at the edge of one side of the upper surface of the forging and pressing seat, a supporting block for supporting the end part of a valve rod is arranged in the forming groove, and a supporting plate is fixedly connected to the lower surface of the supporting block. A triangular strip is fixedly connected to the lower end of the supporting plate, the thickness of the triangular strip is gradually reduced in the direction away from the arc-shaped groove, a strip-shaped groove is formed in the bottom in the forming groove, the supporting block penetrates through the strip-shaped groove, a rectangular groove is formed in one side face of the forging and pressing base, and a movable base is inserted in the rectangular groove. The upper surface of the movable seat is sunken downwards to form a V-shaped groove matched with the triangular strip, the depth of the V-shaped groove is gradually reduced in the direction away from the arc-shaped groove, and an adjusting piece used for adjusting the position of the movable seat is arranged on the lower side of the rectangular groove.

Description

Technical Field

[0001] The utility model relates to a forging device for valve stem processing, belonging to the field of valve stem processing equipment. Background Art

[0002] The valve stem is an important valve component and is used for transmission. It is connected to an actuator or a handle on the top and directly drives the valve core to move or rotate on the bottom to realize the valve opening or closing or regulating function. In order to facilitate the coordination between the valve stem and the handle, two flat openings need to be forged at one end of the valve stem. After the valve stem and the handle are assembled, there will be no relative rotation between the valve stem and the handle. When forging the valve stem, the valve stem needs to be supported. The valve stem needs to be deformed under multiple forgings of the forging head to form a flat opening. When the valve stem is forged twice by the forging head, the valve stem end will lose support after deformation. As a result, the valve stem will bend and deform at the position where the flat opening is formed during the second forging process, resulting in an increase in the defective rate of the valve stem. Therefore, it is necessary to design a forging device for valve stem processing that can prevent the valve stem from bending and deforming during the forging process. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model aims to provide a forging device for valve stem processing to solve the problems raised in the above-mentioned background technology. The utility model prevents the valve stem from bending and deforming during the forging process.

[0004] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme: a forging device for valve stem processing, including a forging seat, the upper surface of the forging seat is recessed downward to form an arc groove for limiting the position of the valve stem, a molding groove is processed at one side edge of the upper surface of the forging seat, the molding groove is communicated with the arc groove, a support block for supporting the end of the valve stem is provided in the molding groove, the lower surface of the support block is connected and fixed with a support plate, the lower end of the support plate is connected and fixed with a triangular bar, the thickness of the triangular bar gradually decreases in the direction away from the arc groove, a strip groove is provided at the bottom of the molding groove, the support block passes through the strip groove, a rectangular groove is provided on one side of the forging seat, the rectangular groove is communicated with the strip groove, a movable seat is inserted in the rectangular groove, the upper surface of the movable seat is recessed downward to form a V-shaped groove matching the triangular bar, the depth of the V-shaped groove gradually decreases in the direction away from the arc groove, and an adjusting member for adjusting the position of the movable seat is provided on the lower side of the rectangular groove.

[0005] Furthermore, the adjusting member includes an L-shaped plate, an L-shaped plate is provided on the lower side of the rectangular groove, the horizontal portion of the L-shaped plate is connected and fixed to the forging seat, a threaded hole is opened on the vertical portion of the L-shaped plate, an adjusting screw is threadedly connected to the threaded hole, one end of the adjusting screw is rotatably connected to the movable seat, and a handle is installed on the end of the adjusting screw away from the movable seat.

[0006] Furthermore, a limiting cover is connected and fixed to one side of the movable seat facing the adjusting screw, the end of the limiting cover facing the movable seat is open, a through hole is provided in the middle of one side of the limiting cover away from the movable seat, the adjusting screw passes through the through hole, and a pan head is connected and fixed to one end of the adjusting screw in the limiting cover, and the pan head is slidably installed in the limiting cover.

[0007] Furthermore, a plurality of arc-shaped plates for limiting the position of the valve stem are provided on the upper side of the arc-shaped groove, and both ends of the arc-shaped plates are connected and fixed to the forging seat.

[0008] Furthermore, the triangular bar and the support plate are an integrally formed structure, and the support plate and the support block are an integrally formed structure.

[0009] Furthermore, positioning bars are connected and fixed to the lower positions of the two side surfaces adjacent to the movable seat, and two symmetrically arranged fixing holes are provided on the upper surface of the positioning bars.

[0010] Beneficial effects of the utility model:

[0011] 1. Place the valve stem in the space formed by the arc groove and the arc plate, and extend one end of the valve stem into the forming groove. At this time, the arc groove and the arc plate work together to limit the valve stem and prevent the valve stem from moving at will during the forging process.

[0012] 2. After one end of the valve stem is in the forming groove, the end of the valve stem is in contact with the upper surface of the support block. When the forging head squeezes the end of the valve stem, the forging head and the support block work together to form a flat mouth on the surface of the valve stem. The adjusting screw is turned by the handle, and the adjusting screw drives the movable seat to slide in the rectangular groove. At this time, the position of the triangle bar in the V-groove changes. As the thickness of the triangle bar gradually changes and the depth of the V-groove gradually changes, the position of the support block in the forming groove changes, so that the support block is always in contact with the flat mouth of the end of the valve stem. With the support of the support block, the part of the valve stem close to the flat mouth is prevented from bending and deformation, thereby improving the yield rate of the valve stem. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Other features, objects and advantages of the present invention will become more apparent by reading the detailed description of non-limiting embodiments with reference to the following drawings:

[0014] Figure 1 This is a schematic diagram of the structure of a forging device for valve stem processing according to the utility model;

[0015] Figure 2 It is a cross-sectional view of a forging seat in a forging device for valve stem processing of the utility model;

[0016] Figure 3 It is a cross-sectional view of a movable seat in a forging device for valve stem processing of the utility model;

[0017] Figure 4 It is a schematic diagram of the assembly of a triangular bar, a support plate and a support block in a forging device for valve stem processing of the utility model;

[0018] Figure 5 This is a three-dimensional diagram of an L-shaped plate in a forging device for valve stem processing of the utility model;

[0019] Figure 6 This is a three-dimensional picture of the valve stem after forging;

[0020] In the figure: 1-forging seat, 2-arc groove, 3-arc plate, 4-positioning strip, 5-movable seat, 6-L-type plate, 7-adjusting screw, 8-handle, 9-V-shaped groove, 10-support block, 11-molding groove, 12-rectangular groove, 13-strip groove, 14-support plate, 15-triangular strip, 16-threaded hole, 17-valve stem, 18-flat mouth. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0022] See also Figure 1 The utility model provides a technical solution: a forging device for valve stem processing, including a forging seat 1, wherein the lower positions of the two side surfaces adjacent to the forging seat 1 and the movable seat 5 are connected and fixed with positioning strips 4, and the upper surface of the positioning strip 4 is provided with two symmetrically arranged fixing holes, so that the screws are passed through the fixing holes and installed at the required position, thereby completing the fixation of the position of the positioning strip 4, that is, the position of the forging seat 1 is restricted.

[0023] See also Figure 1 The upper surface of the forging seat 1 is recessed downward to form an arc groove 2 for limiting the position of the valve stem 17. A forming groove 11 is processed at the edge of one side of the upper surface of the forging seat 1. The forming groove 11 is communicated with the arc groove 2. A plurality of arc plates 3 for limiting the position of the valve stem 17 are provided on the upper side of the arc groove 2. Both ends of the arc plate 3 are connected and fixed to the forging seat 1. The valve stem 17 is placed in the space formed by the arc groove 2 and the arc plate 3, and one end of the valve stem 17 is extended into the forming groove 11. At this time, the arc groove 2 and the arc plate 3 work together to limit the valve stem 17, thereby preventing the valve stem 17 from moving at will during the forging process.

[0024] See also Figure 1-Figure 6, a support block 10 for supporting the end of the valve stem 17 is provided in the forming groove 11, and a support plate 14 is connected and fixed to the lower surface of the support block 10, and the support plate 14 and the support block 10 are an integrally formed structure, and a triangular bar 15 is connected and fixed to the lower end of the support plate 14, and the triangular bar 15 and the support plate 14 are an integrally formed structure, and the thickness of the triangular bar 15 gradually decreases in the direction away from the arc groove 2, and a strip groove 13 is provided at the bottom of the forming groove 11, and the support block 10 passes through the strip groove 13, and a rectangular groove 12 is provided on one side of the forging seat 1, and the rectangular groove 12 is communicated with the strip groove 13, and a movable seat 5 is inserted in the rectangular groove 12, and the upper surface of the movable seat 5 is recessed downward to form a V-shaped groove 9 that matches the triangular bar 15, and the depth of the V-shaped groove 9 gradually decreases in the direction away from the arc groove 2, and an L-shaped plate 6 is provided on the lower side of the rectangular groove 12, and the horizontal part of the L-shaped plate 6 is connected and fixed to the forging seat 1, and the vertical part of the L-shaped plate 6 is provided with a threaded hole 16, and the threaded hole 16 is connected with The adjusting screw 7 has one end which is rotatably connected to the movable seat 5, and a handle 8 is installed at the end of the adjusting screw 7 which is away from the movable seat 5. After one end of the valve stem 17 is in the forming groove 11, the end of the valve stem 17 is in contact with the upper surface of the support block 10, and then when the forging head squeezes the end of the valve stem 17, the forging head and the support block 10 work together to form a flat mouth 18 on the surface of the valve stem 17. The adjusting screw 7 is rotated by the handle 8, and the adjusting screw 7 drives the movable seat 5 to slide in the rectangular groove 12. At this time, the position of the triangular bar 15 in the V-shaped groove 9 changes. As the thickness of the triangular bar 15 gradually changes and the depth of the V-shaped groove 9 gradually changes, the position of the support block 10 in the forming groove 11 changes, so that the support block 10 is always in contact with the flat mouth 18 at the end of the valve stem 17. Under the support of the support block 10, the portion of the valve stem 17 close to the flat mouth 18 is prevented from bending and deformation, thereby improving the yield rate of the valve stem 17.

[0025] See also Figure 1 The movable seat 5 is connected and fixed to the side facing the adjusting screw 7, and the end of the limiting cover facing the movable seat 5 is open. A through hole is opened in the middle of the side of the limiting cover away from the movable seat 5, and the adjusting screw 7 passes through the through hole. The end of the adjusting screw 7 in the limiting cover is connected and fixed to a pan head, which is slidably installed in the limiting cover. When the adjusting screw 7 is rotated, the adjusting screw 7 drives the pan head to slide in the limiting cover, thereby realizing the rotational connection between the adjusting screw 7 and the movable seat 5.

[0026] Although this specification is described according to implementation modes, not every implementation mode includes only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A forging device for valve stem processing, comprising a forging seat (1), characterized in that: The upper surface of the forging seat (1) is recessed downward to form an arc groove (2) for limiting the position of the valve stem (17); a forming groove (11) is processed at one edge of the upper surface of the forging seat (1); the forming groove (11) is communicated with the arc groove (2); a support block (10) for supporting the end of the valve stem (17) is arranged in the forming groove (11); a support plate (14) is connected and fixed to the lower surface of the support block (10); a triangular strip (15) is connected and fixed to the lower end of the support plate (14); the thickness of the triangular strip (15) gradually decreases in the direction away from the arc groove (2); and the forming groove (11) is connected and fixed to the lower surface of the support block (10). A strip groove (13) is provided at the bottom of the profile groove (11), the support block (10) passes through the strip groove (13), a rectangular groove (12) is provided on one side of the forging seat (1), the rectangular groove (12) is communicated with the strip groove (13), a movable seat (5) is inserted in the rectangular groove (12), the upper surface of the movable seat (5) is recessed downward to form a V-shaped groove (9) matched with the triangular strip (15), the depth of the V-shaped groove (9) gradually decreases in the direction away from the arc groove (2), and an adjusting member for adjusting the position of the movable seat (5) is provided on the lower side of the rectangular groove (12).

2. A forging device for valve stem processing according to claim 1, characterized in that: The adjusting member comprises an L-shaped plate (6), an L-shaped plate (6) is arranged on the lower side of the rectangular groove (12), a horizontal portion of the L-shaped plate (6) is connected and fixed to the forging seat (1), a threaded hole (16) is opened on the vertical portion of the L-shaped plate (6), an adjusting screw (7) is connected to the inner thread of the threaded hole (16), one end of the adjusting screw (7) is rotatably connected to the movable seat (5), and a handle (8) is installed on the end of the adjusting screw (7) away from the movable seat (5).

3. A forging device for valve stem processing according to claim 2, characterized in that: The movable seat (5) is connected and fixed with a limiting cover on one side facing the adjusting screw (7); the limiting cover is open at one end facing the movable seat (5); a through hole is provided in the middle of one side of the limiting cover facing away from the movable seat (5); the adjusting screw (7) passes through the through hole; the adjusting screw (7) is connected and fixed with a pan head at one end located in the limiting cover; the pan head is slidably installed in the limiting cover.

4. A forging device for valve stem processing according to claim 1, characterized in that: A plurality of arc-shaped plates (3) for limiting the position of the valve stem (17) are provided on the upper side of the arc-shaped groove (2), and both ends of the arc-shaped plates (3) are connected and fixed to the forging seat (1).

5. A forging device for valve stem processing according to claim 1, characterized in that: The triangular bar (15) and the support plate (14) are an integrally formed structure, and the support plate (14) and the support block (10) are an integrally formed structure.

6. A forging device for valve stem processing according to claim 1, characterized in that: The lower positions of the two side surfaces adjacent to the forging seat (1) and the movable seat (5) are both connected and fixed with positioning strips (4), and the upper surface of the positioning strip (4) is provided with two symmetrically arranged fixing holes.

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