Punching device for valve rod machining

Abstract

The invention relates to the technical field of valve rod machining equipment, and discloses a punching device for valve rod machining, which comprises an outer box, and further comprises a clamping part arranged in the outer box; the rotating part is mounted in the outer box; the buffering part is arranged at the top of the outer box; wherein the bottom of the buffering part extends into the outer box, the top of the rotating part is connected with the clamping part, the clamping part comprises a supporting assembly, and the supporting assembly is arranged in the outer box; and the number of the clamping jaw assemblies is two, and the two clamping jaw assemblies are both installed in the outer box. By arranging the clamping part, the problems that in the using process of an existing punching device, a valve rod needing to be punched is inconvenient to fix and clamp, the valve rod is likely to shake and deviate in the punching process, the punching position has a large error, the quality of the valve rod is affected, and the rejection rate of products is increased are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of valve stem processing equipment, in particular to a punching device for valve stem processing. Background Art

[0002] The valve stem is the key moving part of the valve, used to transmit torque to control opening and closing. Its processing quality directly affects the sealing and service life of the valve. With the development of industrial automation, the requirements for valve stem precision and wear resistance are improved. Processing must take into account both material strength and surface treatment, and must cope with the processing difficulties of complex structures. At the same time, it must adapt to the current industry situation where mass production and customization requirements coexist. It involves the coordination of multiple processes such as turning, grinding, and heat treatment, and punching is an important part of it, requiring a punching device to complete the processing.

[0003] However, the existing punching device is not convenient for fixing and clamping the valve stem that needs to be punched during use, resulting in the valve stem easily shaking and deflecting during the punching process, causing large errors in the punching position, thereby affecting the quality of the valve stem and increasing the scrap rate of the product. Summary of the Invention

[0004] The purpose of the present invention is to provide a punching device for valve stem processing. By setting a clamping part, the problem that the existing punching device is inconvenient to fix and clamp the valve stem that needs to be punched during use is solved, resulting in the valve stem being prone to shaking and offset during the punching process, causing a large error in the punching position, thereby affecting the quality of the valve stem and increasing the scrap rate of the product.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a punching device for valve stem processing, comprising an outer box, and also comprising: a clamping part, which is arranged in the outer box and is used to clamp the valve stem; a rotating part, which is installed on the inner wall of the outer box and connected to the clamping part; and a buffer part, which is arranged on the top of the outer box, and the bottom of the buffer part extends into the outer box and is located above the clamping part.

[0006] Furthermore, the clamping part includes: a support assembly, which is arranged in an outer box in a frame structure; a clamping jaw assembly, and two clamping jaw assemblies are provided, and the two clamping jaw assemblies are installed on two opposite sides of the frame structure of the support assembly.

[0007] Furthermore, the rotating part includes two brackets three arranged on two opposite inner side walls of the outer box, the other two opposite inner side walls of the outer box are rotatably connected to two rotating shafts, the inner bottom wall of the outer box is hinged with two hinge blocks, the bottoms of the two brackets three and the corresponding positions on the inner bottom wall of the outer box are hinged with hinge blocks, the hinge block at the bottom of one bracket three is connected to the hinge block of the corresponding inner bottom wall of the outer box by a telescopic rod, and the hinge block at the bottom of the other bracket three is connected to the hinge block of the corresponding inner bottom wall of the outer box by an electric telescopic rod one.

[0008] Furthermore, the buffer portion includes a punching assembly, which is arranged in the outer box; and an elastic assembly, wherein four elastic assemblies are provided and the four elastic assemblies are arranged at the four corners of the punching assembly.

[0009] Furthermore, the support assembly includes two brackets 1 arranged between the two end portions of the two brackets 3, the middle portions of the two brackets 1 are fixedly connected to the two rotating shafts respectively, a limiting rod 1 is fixedly connected between one ends of the two brackets 1, and a bidirectional threaded rod is rotatably connected between the other ends of the two brackets 1, one end of the bidirectional threaded rod extends out of the bracket 1 and is fixedly connected to a handle, and the support and fixation of other components are achieved through the cooperation of the bracket 1, the limiting rod 1 and the bidirectional threaded rod, and the position of the bracket 2 can be adjusted by driving the bidirectional threaded rod by rotating the handle.

[0010] Furthermore, the clamping jaw assembly includes a bracket 2, one end of which is slidably connected to the outer wall of a limiting rod 1 and the other end of which is threadedly sleeved on the outside of the bidirectional threaded rod. The middle of the two brackets 2 is a rectangular accommodating cavity, and the rectangular accommodating cavity has an open end and a closed end. A slider 1 is slidably connected in the rectangular accommodating cavity, and two springs 1 are fixedly connected between the two ends of the slider 1 and the closed end. Two sliding parts that slide together are provided on the surface of the slider 1. The clamping and releasing actions of the object are realized by sliding the slider 1 in the bracket 2, elastic resetting of the spring 1, and limiting cooperation between the slider 2 and the limiting block 1.

[0011] Furthermore, the punching assembly includes an electric telescopic rod 2 fixedly connected to the top wall of the outer box, the output shaft of the electric telescopic rod 2 is fixedly connected to the connecting plate 1, the bottom of the connecting plate 1 is connected to the connecting plate 2 through four elastic components, a punching piece is provided in the connecting plate 2, and the connecting plate 2 is a rectangle with an open bottom. The electric telescopic rod 2 is used to push the connecting plate 1 and the punch downward, so that the punch penetrates the connecting plate 2 to punch the object on the base, and the connecting plate 2 is adapted to the base to locate the punching position.

[0012] Furthermore, the elastic component includes a limit rod 2 fixedly connected to the four corners of the top of the connecting plate 2, the limit rod 2 extends upward through the connecting plate 1, the top of the limit rod 2 is fixedly connected to the limit block 2, the outer wall of the limit rod 2 is provided with a spring 2 located between the limit block 2 and the connecting plate 1, and the limit rod 2 passes through the connecting plate 1, cooperates with the elastic buffering of the spring 2 and the limiting effect of the limit block 2, provides a reset force for the connecting plate 1 during the punching process and prevents excessive movement.

[0013] Furthermore, the sliding member includes a slider 2 slidably connected to the slider 1, and the top and bottom of the slider 2 are both provided with limit grooves inclined toward the center of the slider 1, and the inner top wall and the inner bottom wall of the rectangular accommodating cavity are fixedly connected with two limit blocks 1 that cooperate with the limit grooves.

[0014] Furthermore, the punching part includes a base fixedly connected to the inner wall of the bottom of the outer box, the connecting plate 2 corresponds to the base and can cover the base, the bottom of the connecting plate 1 is fixedly connected with a punch passing through the connecting plate 2, and the top of the base is provided with a hole that cooperates with the limiting rod 2 and the punch.

[0015] The present invention has the following beneficial effects: (1) The present invention provides a clamping portion. When the valve stem needs to be clamped, the two ends of the valve stem can be placed between the two clamping jaw assemblies, and then the handle is turned to drive the bidirectional threaded rod to rotate. When the bidirectional threaded rod rotates, it will drive the two brackets 2 to approach each other under the action of the limit rod 1. When the two sliders 1 are in contact with the two ends of the valve stem, the two sliders 1 will slide into the two brackets 2 respectively, and make a plurality of springs 1 generate elastic force. In the process of the slider 1 sliding into the bracket 2, the two sliders 2 will approach each other under the action of the limit block 1 and the limit groove, thereby clamping the valve stem. The valve stem to be processed can be firmly clamped to avoid shaking and displacement during processing, and to prevent unnecessary errors in the punching position, thereby improving the quality of the valve stem punching and reducing the scrap rate of the product.

[0016] (2) The present invention provides a rotating part. When the angle of the valve stem needs to be rotated, the electric telescopic rod 1 can be started to extend and retract its output shaft, thereby driving the clamping part to deflect through two brackets 3 under the action of a plurality of hinge blocks and the telescopic rod. At this time, the clamping part drives the valve stem to deflect to a suitable direction under the restriction of the two rotating shafts, and the clamped valve stem can be rotated to a suitable position without removing the valve stem and reinstalling it, thereby improving the efficiency of the valve stem installation and further improving the efficiency of the punching operation.

[0017] (3) The present invention provides a buffer portion. When punching is performed, the electric telescopic rod 2 can be started so that its output shaft drives the connecting plate 1 to move downward, thereby driving the connecting plate 2 to move downward under the action of the elastic component, thereby covering the valve stem. After the connecting plate 2 is matched with the base, the electric telescopic rod 2 continues to move, thereby driving the punch to punch the valve stem through the connecting plate 1. During this process, the spring 2 is stretched and generates elastic force under the action of the limit rod 2 and the limit block 2, which can buffer the punching force during punching, disperse the punching force to the buffer portion, and then convert it into elastic force, thereby avoiding excessive impact force caused by the instantaneous contact between the punch and the valve stem, which may damage the equipment, thereby ensuring the stability of the punching operation.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a partial cross-sectional structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the overall structure of the electric telescopic rod of the present invention; Figure 4 It is a partial cross-sectional structural schematic diagram of the support assembly of the present invention; Figure 5 It is a partial cross-sectional structural schematic diagram of the clamping jaw assembly of the present invention; Figure 6 For the present invention Figure 5 Schematic diagram of the enlarged structure of A in the middle; Figure 7 It is a partial cross-sectional structural schematic diagram of the buffer portion of the present invention.

[0021] In the accompanying drawings, the components represented by the reference numerals are as follows: In the figure: 101, outer box; 2, clamping part; 21, supporting assembly; 211, bracket one; 212, limiting rod one; 213, two-way threaded rod; 214, handle; 22, clamping claw assembly; 221, bracket two; 222, slider one; 223, spring one; 224, slider two; 225, limiting groove; 226, limiting block one; 3, rotating part; 301, bracket three; 302, rotating shaft; 303, hinge block; 304, telescopic rod; 305, electric telescopic rod one; 4, buffer part; 41, punching assembly; 411, electric telescopic rod two; 412, connecting plate one; 413, connecting plate two; 414, base; 415, punch; 42, elastic assembly; 421, limiting rod two; 422, limiting block two; 423, spring two. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-Figure 7 As shown, the present invention is a punching device for valve stem processing, including an outer box 101, and also including: a clamping part 2, the clamping part 2 is arranged in the outer box 101 for clamping the valve stem; a rotating part 3, the rotating part 3 is installed on the inner wall of the outer box 101 and connected to the clamping part; a buffer part 4, the buffer part 4 is arranged on the top of the outer box 101, and the bottom of the buffer part 4 extends into the outer box 101 and is located above the clamping part.

[0024] The clamping part 2 includes: a support component 21, which is arranged in the outer box 101 in a frame structure; a clamping claw component 22, which is provided with two clamping claw components 22, and the two clamping claw components 22 are installed on two opposite sides of the frame structure of the support component. The support component 21 includes two brackets 1 211 arranged between the two end portions of the two brackets 3, and the middle of the two brackets 1 are respectively fixedly connected to the two rotating shafts. A limiting rod 1 212 is fixedly connected between one end of the two brackets 1, and a two-way threaded rod 213 is rotatably connected between the other ends of the two brackets 1 211. One end of the two-way threaded rod 213 extends out of the bracket 1 and is fixedly connected to a handle 214. The clamping claw component 22 includes a bracket 221 with one end slidably connected to the outer wall of the limiting rod 1 212 and the other end threadedly sleeved on the outside of the two-way threaded rod. The two brackets The middle of the second 221 is a rectangular accommodating cavity, which has an open end and a closed end. A slider 1 222 is slidably connected in the rectangular accommodating cavity. Two springs 1 223 are fixedly connected between the two ends of the slider 1 222 and the closed end. Two sliding parts that slide together are provided on the surface of the slider 1 222. The sliding parts include a slider 2 224 slidably connected to the slider 1. The top and bottom of the slider 2 224 are both provided with a limiting groove 225 inclined to the center of the slider 1. The inner top wall and the inner bottom wall of the rectangular accommodating cavity are fixedly connected with two limiting blocks 1 226 that cooperate with the limiting grooves. By providing the clamping part 2, the valve stem to be processed can be firmly clamped to avoid shaking and deviation during processing, and to prevent unnecessary errors in the punching position, thereby improving the quality of the valve stem punching and reducing the scrap rate of the product.

[0025] The rotating part 3 includes two brackets 301 arranged on two opposite inner walls of the outer box 101, and the other two opposite inner walls of the outer box 101 are rotatably connected to two rotating shafts 302. The inner bottom wall of the outer box 101 is hinged with two hinge blocks 303. The bottoms of the two brackets 3 and the corresponding positions on the inner bottom wall of the outer box are hinged with hinge blocks. The hinge block at the bottom of one bracket 3 is connected to the hinge block of the corresponding inner bottom wall of the outer box by a telescopic rod 304, and the hinge block at the bottom of the other bracket 3 is connected to the hinge block of the corresponding inner bottom wall of the outer box by an electric telescopic rod 1 305. By providing the rotating part 3, the clamped valve stem can be rotated to a suitable position without removing the valve stem and reinstalling it, thereby improving the efficiency of the valve stem installation and thereby improving the efficiency of the punching operation.

[0026] The buffer portion 4 includes a punching component 41, which is arranged in the outer box 101; an elastic component 42, four of which are provided. The four elastic components 42 are provided at the four corners of the punching component 41, and the punching component 41 includes an electric telescopic rod 2 411 fixedly connected to the top wall of the outer box 101, and the output shaft of the electric telescopic rod 2 411 is fixedly connected to a connecting plate 1 412, and the lower part of the connecting plate 1 412 is connected to a connecting plate 2 413 through four elastic components, and a punching piece is provided in the connecting plate 2 413, and the connecting plate 2 413 is a rectangle with an open bottom and two end faces, that is, the whole is an inverted U-shaped groove structure. When the connecting plate 2 covers the valve stem, the openings of the two end faces are provided for the valve stem. The two ends extend freely, and the bottom opening allows the valve stem to be placed on the base 414. The elastic component 42 includes a second limiting rod 421 fixedly connected to the four corners of the top of the second connecting plate 413. The second limiting rod 421 extends upward through the first connecting plate. The top of the second limiting rod is fixedly connected to the second limiting block 422. The outer wall of the second limiting rod 421 is provided with a second spring 423 located between the second limiting block and the first connecting plate. The punching member includes a base 414 fixedly connected to the inner wall of the bottom of the outer box 101. The second connecting plate corresponds to the base and can cover the base. The bottom of the first connecting plate 412 is fixedly connected to a punch 415 that passes through the second connecting plate. The top of the base is provided with a hole that cooperates with the second limiting rod and the punch. The hole that cooperates with the punch is located in the center, providing a stroke range for stamping and preventing the punch from squeezing the base. The holes that cooperate with the second limiting rod are at the four corners. By providing the buffer portion 4, the punching force can be buffered during punching, and the punching force can be dispersed to the buffer portion 4 and then converted into elastic force, thereby avoiding excessive impact force caused by instantaneous contact between the punch 415 and the valve stem, which may damage the equipment, thereby ensuring the stability of the punching operation.

[0027] During use, when it is necessary to clamp the valve stem, the two ends of the valve stem can be placed between the two clamping jaw assemblies 22, and then the handle 214 is rotated to drive the two-way threaded rod 213 to rotate. When the two-way threaded rod 213 rotates, it will drive the two brackets 221 to approach each other under the action of the limit rod 1 212. When the two sliders 1 222 are in contact with the two ends of the valve stem, the two sliders 1 222 will slide into the rectangular accommodating cavity respectively, and make the four springs 1 223 generate elastic force. In the process of slider 1 222 sliding into bracket 2 221, the two sliders 224 will approach each other under the action of the limit block 1 226 and the limit groove 225, thereby clamping the two ends of the valve stem. When the angle of the valve stem needs to be rotated, the electric telescopic rod 1 305 can be started to extend and retract its output shaft, thereby The lower bracket 301 drives the clamping part 2 to deflect around the rotating shaft. At this time, the two rotating shafts 302 limit the clamping part 2 to drive the valve stem to deflect to the appropriate direction. When stamping, one end of the valve stem is placed in the hole at the center of the base 414. The electric telescopic rod 2 411 can be started to make its output shaft drive the connecting plate 1 412 to move downward, thereby driving the connecting plate 2 413 to move downward under the action of the elastic component 42, thereby covering the valve stem. After the connecting plate 2 413 cooperates with the base 414, the electric telescopic rod 2 411 continues to move, thereby driving the punch 415 to punch the valve stem through the connecting plate 1 412, and the four limit rods 2 cooperate with the four holes at the four corners of the top of the base. In this process, under the action of the limit rod 2 421 and the limit block 2 422, the spring 2 423 will be stretched and generate elastic force.

[0028] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the content of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A punching device for valve stem processing, comprising an outer box (101), characterized in that: The valve stem is further comprised of: a clamping portion (2), the clamping portion (2) being arranged in the outer box (101) for clamping the valve stem; a rotating portion (3), the rotating portion (3) being mounted on the inner side wall of the outer box (101) and connected to the clamping portion; and a buffer portion (4), the buffer portion (4) being arranged on the top of the outer box (101), the bottom of the buffer portion (4) extending into the outer box (101) and being located above the clamping portion.

2. A punching device for valve stem processing according to claim 1, characterized in that: The clamping portion (2) comprises: a support assembly (21), the support assembly (21) being arranged in an outer box (101) in a frame structure; and a clamping jaw assembly (22), two of which are provided, and the two clamping jaw assemblies (22) are installed on two opposite sides of the frame structure of the support assembly.

3. A punching device for valve stem processing according to claim 2, characterized in that: The rotating part (3) includes two brackets (301) arranged on two opposite inner side walls of the outer box (101), the other two opposite inner side walls of the outer box (101) are rotatably connected to two rotating shafts (302), the inner bottom wall of the outer box (101) is hinged with two hinge blocks (303), the bottoms of the two brackets (3) and the corresponding positions on the inner bottom wall of the outer box are hinged with hinge blocks, the hinge block at the bottom of one bracket (3) is connected to the hinge block of the corresponding inner bottom wall of the outer box via a telescopic rod (304), and the hinge block at the bottom of the other bracket (3) is connected to the hinge block of the corresponding inner bottom wall of the outer box via an electric telescopic rod (305).

4. A punching device for valve stem processing according to claim 3, characterized in that: The buffer portion (4) comprises: a punching assembly (41), the punching assembly (41) being arranged in the outer box (101); and an elastic assembly (42), four of which are arranged at the four corners of the punching assembly (41).

5. A punching device for valve stem processing according to claim 4, characterized in that: The support assembly (21) includes two brackets (211) arranged between the two end portions of the two brackets (3), the middle portions of the two brackets (211) are fixedly connected to the two rotating shafts respectively, a limiting rod (212) is fixedly connected between one ends of the two brackets (211), a bidirectional threaded rod (213) is rotatably connected between the other ends of the two brackets (211), and one end of the bidirectional threaded rod (213) extends out of the bracket (211) and is fixedly connected to a handle (214).

6. A punching device for valve stem processing according to claim 5, characterized in that: The clamping jaw assembly (22) includes a bracket 2 (221) with one end slidably connected to the outer wall of the limiting rod 1 (212) and the other end threadedly sleeved on the outside of the bidirectional threaded rod. The middle of the two brackets 2 (221) is a rectangular accommodating cavity, and the rectangular accommodating cavity has an open end and a closed end. A slider 1 (222) is slidably connected in the rectangular accommodating cavity. Two springs 1 (223) are fixedly connected between the two ends of the slider 1 (222) and the closed end. Two sliding parts that slide together are provided on the surface of the slider 1 (222).

7. A punching device for valve stem processing according to claim 6, characterized in that: The punching assembly (41) includes an electric telescopic rod 2 (411) fixedly connected to the top wall of the outer box (101), the output shaft of the electric telescopic rod 2 (411) is fixedly connected to a connecting plate 1 (412), the lower part of the connecting plate 1 (412) is connected to a connecting plate 2 (413) via four elastic components, a punching member is provided in the connecting plate 2 (413), and the connecting plate 2 (413) is rectangular with an open bottom.

8. A punching device for valve stem processing according to claim 7, characterized in that: The elastic component (42) includes a second limiting rod (421) fixedly connected to the four corners of the top of the second connecting plate (413), the second limiting rod (421) extends upward through the first connecting plate, the top of the second limiting rod is fixedly connected to the second limiting block (422), and the outer wall of the second limiting rod (421) is provided with a second spring (423) located between the second limiting block and the first connecting plate.

9. A punching device for valve stem processing according to claim 8, characterized in that: The sliding member includes a slider 2 (224) slidably connected to the slider 1, and the top and bottom of the slider 2 (224) are both provided with a limit groove (225) inclined toward the center of the slider 1, and the inner top wall and the inner bottom wall of the rectangular accommodating cavity are fixedly connected with two limit blocks 1 (226) that cooperate with the limit grooves.

10. A punching device for valve stem processing according to claim 9, characterized in that: The punching member includes a base (414) fixedly connected to the inner wall of the bottom of the outer box (101), the second connecting plate corresponds to the base and can cover the base, the bottom of the first connecting plate (412) is fixedly connected to a punch (415) passing through the second connecting plate, and the top of the base is provided with a hole that cooperates with the second limiting rod and the punch.

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