Welding device for research and development of diaphragm compressor

Abstract

The utility model discloses a welding device for research and development of a diaphragm compressor in the technical field of welding equipment. The welding device comprises a workbench. A horizontal linear guide rail is fixed to the top face of the workbench, a first sliding block and a second sliding block are slidably installed on the two sides of the linear guide rail respectively, and a fixing block is fixed to the middle section of the linear guide rail. The top of the first sliding block, the top of the second sliding block and the top of the fixing block are correspondingly provided with a large connecting rod head, a small connecting rod head and a connecting rod body. A first butt joint driving assembly and a second butt joint driving assembly are arranged on the two sides of the workbench correspondingly, the first butt joint driving assembly is in transmission connection with the first sliding block, and the second butt joint driving assembly is in transmission connection with the second sliding block. A first welding assembly and a second welding assembly are installed on the top plate. The welding piece butt joint is accurate, the welding efficiency is high, and manpower is saved.

Description

Technical Field

[0001] This utility model relates to the field of welding equipment technology, and in particular to a welding device for the research and development of diaphragm compressors. Background Technology

[0002] Diaphragm compressors, also known as membrane compressors, are a type of reciprocating compressor among positive displacement compressors. Diaphragm compressors have excellent cylinder heat dissipation, allowing for higher compression ratios and thus providing a wide pressure range. Due to their advantages of high compression ratio, good sealing, and protection against contamination from lubricating oil and other solid impurities, they have become one of the key projects in the localization of large-scale petroleum and chemical equipment in my country.

[0003] The main components of a diaphragm compressor include the casing, cylinder, piston assembly, diaphragm assembly, crankshaft, connecting rod, crosshead, bearings, packing, and valves. For example... Figure 3 As shown, a connecting rod typically consists of a big end, a body, and a small end. Common construction methods for connecting rods include integral casting and multi-segment welding, each with its own advantages and disadvantages. When manufacturing connecting rods using multi-segment welding, technicians have found that existing welding equipment has low welding efficiency and low weld joint precision, failing to meet production requirements. Therefore, there is an urgent need to improve existing welding equipment. Utility Model Content

[0004] The main objective of this invention is to provide a welding device for the research and development of diaphragm compressors, which addresses the problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A welding device for the research and development of a diaphragm compressor includes a worktable and a top plate above the worktable. A horizontal linear guide rail is fixed to the top surface of the worktable. A first slider and a second slider are slidably mounted on both sides of the linear guide rail, and a fixing block is fixed to the middle section of the linear guide rail. A connecting rod big end, a connecting rod small end, and a connecting rod body are respectively mounted on the top of the first slider, the top of the second slider, and the top of the fixing block. A first docking drive assembly and a second docking drive assembly are respectively provided on both sides of the worktable. The first docking drive assembly is driven by the first slider, and the second docking drive assembly is driven by the second slider. A first welding assembly and a second welding assembly are mounted on the top plate. Both the first welding assembly and the second welding assembly include a hydraulic cylinder, a servo motor, a crossbar, and a welding torch. The hydraulic cylinder is vertically fixed to the top plate. The telescopic rod of the hydraulic cylinder slides through the top plate and is fixedly connected to a vertical servo motor. The power output shaft of the servo motor is fixedly connected to a crossbar, and a vertical welding torch is provided at the end of the crossbar.

[0007] Further, the first docking drive assembly includes a first vertical plate, a first docking motor, and a first reciprocating screw. A first vertical plate perpendicular to the linear guide rail is fixed to one side of the worktable. The first docking motor is mounted on the side of the first vertical plate facing away from the worktable. The output shaft of the first docking motor rotatably passes through the first vertical plate and is coaxially connected to the first reciprocating screw. The bottom of the first slider has a first threaded hole that threadedly engages with the first reciprocating screw. The second docking drive assembly includes a second vertical plate, a second docking motor, and a second reciprocating screw. A second vertical plate perpendicular to the linear guide rail is fixed to the other side of the worktable. A second docking motor is mounted on the side of the second vertical plate facing away from the worktable. The output shaft of the second docking motor rotatably passes through the second vertical plate and is coaxially connected to the second reciprocating screw. The bottom of the second slider has a second threaded hole that threadedly engages with the second reciprocating screw.

[0008] Furthermore, bearings are embedded on the left and right sides of the fixing block, and the first reciprocating screw and the second reciprocating screw are rotatably connected to the bearings on the corresponding sides.

[0009] Furthermore, a first buffer spring is fitted on the section of the first reciprocating screw located between the first slider and the fixed block, and a second buffer spring is fitted on the section of the second reciprocating screw located between the second slider and the fixed block.

[0010] Furthermore, after the connecting rod big end, connecting rod body, and connecting rod small end are sequentially joined, the central axis of the first welding assembly passes through the center of the connecting rod big end, and the welding torch of the first welding assembly matches the joint between the connecting rod big end and the connecting rod body. The central axis of the second welding assembly passes through the center of the connecting rod small end, and the welding torch of the second welding assembly matches the joint between the connecting rod small end and the connecting rod body.

[0011] This invention also includes other components that enable the welding device used in the research and development of the diaphragm compressor to function properly. These devices or components all employ conventional techniques in the art. Furthermore, devices and components not specified in this invention all employ conventional techniques in the art, such as the hydraulic cylinder and welding torch mentioned in this application. In specific implementation, appropriate equipment or component models can be selected according to the specific working scenario.

[0012] The working principle of this invention is as follows: During the welding process, the first and second welding motors start simultaneously, driving the first and second sliders towards the fixed block via the first and second reciprocating screws, respectively, to achieve accurate docking of the connecting rod's big end, body, and small end. After the connecting rod's big end, body, and small end are docked sequentially, the central axis of the first welding assembly passes through the center of the connecting rod's big end, and the welding torch of the first welding assembly matches the joint between the connecting rod's big end and body. Similarly, the central axis of the second welding assembly passes through the center of the connecting rod's small end, and the welding torch of the second welding assembly matches the joint between the connecting rod's small end and body. Simultaneously, the hydraulic cylinder extension rods of the first and second welding assemblies extend, and the servo motor operates, driving the welding torch to rotate around the servo motor's power output shaft, thus completing the welding operation.

[0013] Compared with the prior art, the present invention has the following advantages: precise welding of welded parts, high welding efficiency, and saving manpower. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a welding device for the research and development of a diaphragm compressor according to this utility model.

[0015] Figure 2 This is a schematic diagram of the structure of the first welding component of this utility model.

[0016] Figure 3 This is a schematic diagram of the welded connecting rod of this utility model.

[0017] In the diagram: 1. Workbench; 2. Top plate; 21. First welding assembly; 22. Second welding assembly; 3. Linear guide rail; 4. First slider; 41. Big end of connecting rod; 5. Second slider; 51. Small end of connecting rod; 6. Fixing block; 61. Connecting rod body; 62. Bearing; 7. First vertical plate; 8. Second vertical plate; 9. First docking motor; 10. Second docking motor; 11. First reciprocating screw; 12. Second reciprocating screw; 13. First buffer spring; 14. Second buffer spring; 15. Hydraulic cylinder; 16. Servo motor; 17. Crossbar; 18. Welding torch. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0019] Example:

[0020] like Figures 1-3As shown, a welding device for the research and development of a diaphragm compressor includes a workbench 1 and a top plate 2 located above the workbench 1. A horizontal linear guide rail 3 is fixed to the top surface of the workbench 1. A first slider 4 and a second slider 5 are slidably mounted on both sides of the linear guide rail 3, and a fixing block 6 is fixed to the middle section of the linear guide rail 3. A connecting rod big end 41, a connecting rod small end 51, and a connecting rod body 61 are respectively mounted on the top of the first slider 4, the top of the second slider 5, and the top of the fixing block 6. A first docking drive assembly and a second docking drive assembly are respectively provided on both sides of the workbench 1. The first docking drive assembly is driven by the first slider 4, and the second docking drive assembly is driven by the second slider 5. A first welding assembly 21 and a second welding assembly 22 are mounted on the top plate 2. The first welding assembly 21 and the second welding assembly 22 both include a hydraulic cylinder 15, a servo motor 16, a crossbar 17 and a welding torch 18. The hydraulic cylinder 15 is vertically fixed on the top plate 2. The telescopic rod of the hydraulic cylinder 15 slides through the top plate 2 and is fixedly connected to the vertical servo motor 16. The power output shaft of the servo motor 16 is fixedly connected to the crossbar 17, and the end of the crossbar 17 is provided with a vertical welding torch 18.

[0021] Specifically, the first docking drive assembly includes a first vertical plate 7, a first docking motor 9, and a first reciprocating screw 11. A first vertical plate 7, perpendicular to the linear guide rail 3, is fixed to one side of the worktable 1. The first docking motor 9 is mounted on the side of the first vertical plate 7 facing away from the worktable 1. The output shaft of the first docking motor 9 rotates through the first vertical plate 7 and is coaxially connected to the first reciprocating screw 11. The bottom of the first slider 4 has a first threaded hole that threadedly engages with the first reciprocating screw 11. The second docking drive assembly includes a second vertical plate 8, a second docking motor 10, and a second reciprocating screw 12. A second vertical plate 8, perpendicular to the linear guide rail 3, is fixed to the other side of the worktable 1. The second docking motor 10 is mounted on the side of the second vertical plate 8 facing away from the worktable 1. The output shaft of the second docking motor 10 rotates through the second vertical plate 8 and is coaxially connected to the second reciprocating screw 12. The bottom of the second slider 5 has a second threaded hole that threadedly engages with the second reciprocating screw 12.

[0022] In addition, a first buffer spring 13 is sleeved on the section of the first reciprocating screw 11 between the first slider 4 and the fixed block 6, and a second buffer spring 14 is sleeved on the section of the second reciprocating screw 12 between the second slider 5 and the fixed block 6. Bearings 62 are respectively embedded on the left and right sides of the fixed block 6, and the first reciprocating screw 11 and the second reciprocating screw 12 are rotatably connected to the bearings 62 on the corresponding sides.

[0023] It should be emphasized that after the connecting rod big end 41, connecting rod body 61, and connecting rod small end 51 are sequentially connected, the central axis of the first welding assembly 21 passes through the center of the connecting rod big end 41, and the welding torch 18 of the first welding assembly 21 matches the joint between the connecting rod big end 41 and the connecting rod body 61. The central axis of the second welding assembly 22 passes through the center of the connecting rod small end 51, and the welding torch 18 of the second welding assembly 22 matches the joint between the connecting rod small end 51 and the connecting rod body 61.

[0024] The working principle of the welding device for diaphragm compressor research and development of this utility model is as follows: When welding parts are joined, the first welding motor 9 and the second welding motor 10 start simultaneously, driving the first slider 4 and the second slider 5 to move toward the fixed block 6 through the first reciprocating screw 11 and the second reciprocating screw 12 respectively, thus completing the accurate joining of the connecting rod big end 41, connecting rod body 61 and connecting rod small end 51. After the connecting rod big end 41, connecting rod body 61 and connecting rod small end 51 are joined in sequence, the central axis of the first welding assembly 21 passes through the center of the connecting rod big end 41, and the welding gun 18 of the first welding assembly 21 matches the joint of the connecting rod big end 41 and the connecting rod body 61. The central axis of the second welding assembly 22 passes through the center of the connecting rod small end 51, and the welding gun 18 of the second welding assembly 22 matches the joint of the connecting rod small end 51 and the connecting rod body 61. The hydraulic cylinder 15 of the first welding assembly 21 and the second welding assembly 22 extends its telescopic rod, and at the same time the servo motor 16 works to drive the welding torch 18 to rotate around the power output shaft of the servo motor 16 to complete the welding work.

[0025] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope of the present utility model.

Claims

1. A diaphragm compressor welding device for research and development, comprising a workbench (1) and a top plate (2) arranged above the workbench (1), characterized in that: The top surface of the workbench (1) is fixed with a horizontal linear guide rail (3), both sides of the linear guide rail (3) are respectively slidably installed with a first sliding block (4) and a second sliding block (5), and the middle section of the linear guide rail (3) is fixed with a fixed block (6); the top of the first sliding block (4), the top of the second sliding block (5) and the top of the fixed block (6) are respectively correspondingly installed with a connecting rod big end (41), a connecting rod small end (51) and a connecting rod body (61); both sides of the workbench (1) are respectively provided with a first docking drive assembly and a second docking drive assembly, the first docking drive assembly is in transmission connection with the first sliding block (4), and the second docking drive assembly is in transmission connection with the second sliding block (5); the top plate (2) is installed with a first welding assembly (21) and a second welding assembly (22); the first welding assembly (21) and the second welding assembly (22) both comprise a hydraulic cylinder (15), a servo motor (16), a cross rod (17) and a welding gun (18), the hydraulic cylinder (15) is vertically fixed on the top plate (2), the telescopic rod of the hydraulic cylinder (15) slidably penetrates through the top plate (2) and is fixedly connected with the vertical servo motor (16), the power output shaft of the servo motor (16) is fixedly connected with the cross rod (17), and the tail end of the cross rod (17) is provided with the vertical welding gun (18).

2. The diaphragm compressor research and development welding device of claim 1, wherein: The first docking drive assembly comprises a first vertical plate (7), a first docking motor (9) and a first reciprocating screw (11), one side of the workbench (1) is fixed with the first vertical plate (7) perpendicular to the linear guide rail (3), one side, away from the workbench (1), of the first vertical plate (7) is installed with the first docking motor (9), the output shaft of the first docking motor (9) rotationally penetrates through the first vertical plate (7) and is coaxially connected with the first reciprocating screw (11), and the bottom of the first sliding block (4) is provided with a first screw hole threadedly sleeved with the first reciprocating screw (11); the second docking drive assembly comprises a second vertical plate (8), a second docking motor (10) and a second reciprocating screw (12), the other side of the workbench (1) is fixed with the second vertical plate (8) perpendicular to the linear guide rail (3), one side, away from the workbench (1), of the second vertical plate (8) is installed with the second docking motor (10), the output shaft of the second docking motor (10) rotationally penetrates through the second vertical plate (8) and is coaxially connected with the second reciprocating screw (12), and the bottom of the second sliding block (5) is provided with a second screw hole threadedly sleeved with the second reciprocating screw (12).

3. The diaphragm compressor research and development welding device of claim 2, wherein: The left and right sides of the fixed block (6) are respectively embedded with bearings (62), and the first reciprocating screw (11) and the second reciprocating screw (12) are respectively rotationally connected with the bearings (62) on the corresponding sides.

4. The diaphragm compressor research and development welding device of claim 2, wherein: The section of the first reciprocating screw (11) between the first sliding block (4) and the fixed block (6) is sleeved with a first buffer spring (13), and the section of the second reciprocating screw (12) between the second sliding block (5) and the fixed block (6) is sleeved with a second buffer spring (14).

5. The diaphragm compressor research and development welding device of claim 1, wherein: After the connecting rod big end (41), the connecting rod body (61) and the connecting rod small end (51) are butted in turn, the middle axis of the first welding assembly (21) passes through the center of the connecting rod big end (41), and the welding gun (18) of the first welding assembly (21) matches the joint of the connecting rod big end (41) and the connecting rod body (61); the middle axis of the second welding assembly (22) passes through the center of the connecting rod small end (51), and the welding gun (18) of the second welding assembly (22) matches the joint of the connecting rod small end (51) and the connecting rod body (61).

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