Water pump shell welding device

Abstract

The invention relates to the technical field of welding, in particular to a water pump shell welding device which comprises a bottom plate, a vertical plate is fixedly connected to the upper surface of the bottom plate, a supporting frame is fixedly connected to the front surface of the vertical plate, a driving shaft is rotationally connected to the inner side of the supporting frame, and three rotating rollers fixedly sleeve the outer surface of the driving shaft; the length of the front rotating roller and the length of the rear rotating roller are smaller than the length of the middle rotating roller, the upper portions of the rotating rollers are exposed out of the supporting frame, and gravity rods are movably installed on the lower portions of the rotating rollers in the vertical direction through telescopic mechanisms. The step of preliminary welding and fixing by workers in the traditional process is omitted; the joint of the cylindrical shell and the metal ring body can be automatically and comprehensively welded, and the sealing degree of the joint is guaranteed; in the process of positioning the cylindrical shell and the metal ring body, the tightening degree can be flexibly adjusted, and a workpiece to be machined is prevented from being scratched in the rotating process.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly to a welding device for a water pump housing. Background Art

[0002] In the welding of the cavity pump housing of a vacuum pump, both ends of a columnar housing are respectively welded to a metal ring body to facilitate the later assembly of the cavity pump housing. In the existing welding process, workers first hold a welding torch to preliminarily weld and position both ends of the columnar housing to the metal ring body respectively, and then perform full welding on a machine to ensure the sealing degree of the connection position. This welding method brings difficulties to workers and requires additional customized auxiliary tools for positioning and preliminary welding, which is inconvenient. To solve the above problems, we propose a welding device for a water pump housing. Summary of the Invention

[0003] The purpose of the present invention is to solve the drawbacks in the background art, and a welding device for a water pump housing is proposed.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a welding device for a water pump housing, including a bottom plate, the upper surface of the bottom plate is fixedly connected with a vertical plate, the front surface of the vertical plate is fixedly connected with a support frame, the inner side of the support frame is rotatably connected with a driving shaft, the outer surface of the driving shaft is fixedly sleeved with three rotating rollers, the lengths of the front and rear two rotating rollers are less than the length of the middle rotating roller, the upper part of the rotating roller is exposed outside the support frame, and the lower part of the rotating roller is vertically movably installed with a gravity rod through a telescopic mechanism. It further includes a welding mechanism arranged above the side of the support frame.

[0005] Preferably, a first motor is fixedly installed on the rear surface of the vertical plate, and the output shaft of the first motor is fixedly connected to the rear end of the driving shaft.

[0006] Preferably, the telescopic mechanism includes an upper insertion column fixedly connected to the lower surface of the support frame, a lower insertion column fixedly connected to the upper surface of the gravity rod, a cylinder body is jointly sleeved and slidably arranged between the upper insertion column and the lower insertion column, a connecting cylinder is fixedly connected to one side surface of the cylinder body, and a threaded column in threaded fit is inserted at the port of the connecting cylinder.

[0007] Preferably, a upper plug plate is fixedly connected to the lower end of the upper insertion column, a lower plug plate is fixedly connected to the upper end of the lower insertion column, both the upper plug plate and the lower plug plate are slidably matched with the inner wall of the cylinder body, an upper spacer is fixedly arranged at the lower part of the inner wall of the cylinder body close to the upper plug plate, and a lower spacer is fixedly arranged at the upper part of the inner wall of the cylinder body close to the lower plug plate.

[0008] Preferably, an activity groove is formed in the inner wall of the cylinder block. An activity plate is slidably clamped in the activity groove. A plurality of limiting columns are vertically and fixedly connected to the side surface of the activity plate. The limiting columns slidably penetrate through the outer surface of the cylinder block, and a sharpened tip is formed at the end of the limiting column. The two adjacent limiting columns up and down are jointly clamped at the upper end port of the cylinder block. Limiting blocks are respectively and fixedly arranged at the upper and lower corners in the activity groove.

[0009] Preferably, a chute is formed in the front surface of the vertical plate, and the rear end of the gravity rod is slidably inserted into the inner side of the chute.

[0010] Preferably, a guide cylinder is fixedly connected to the upper surface of the gravity rod near the rear end. A guide rod is slidably inserted into the upper end of the guide cylinder, and the upper end of the guide rod is fixedly connected to the lower surface of the support frame.

[0011] Preferably, the welding mechanism includes an extension frame movably installed above the bottom plate through a servo mechanism, and a welding head is arranged at the end of the extension frame.

[0012] Preferably, the servo mechanism includes a guide rail fixedly installed on one side of the bottom plate, a threaded block slidably installed inside the guide rail, a lead screw rotatably installed inside the guide rail. The lead screw passes through the threaded block and is in threaded cooperation with each other. The rear end of the lead screw is connected to the output shaft of a second motor, and the second motor is fixedly connected to the rear end of the guide rail. A toothed plate is fixedly connected to the upper end of the threaded block. A sliding frame is slidably sleeved on the outer surface of the toothed plate. A third motor is fixedly installed on the outer surface of the sliding frame. The output shaft of the third motor is fixedly connected to a gear, and the gear meshes with the toothed plate. A slider is fixedly installed on the rear surface of the sliding frame. A vertical rod slidably penetrates through the inside of the slider, and the vertical rod is fixedly installed inside the toothed plate. One side of the sliding frame is fixedly connected to one end of the extension frame.

[0013] Compared with the prior art, the present invention has the following beneficial effects: 1. It has the function of quickly positioning the column shell and the metal ring body, which brings convenience to welding and omits the step of preliminary welding and fixing by workers in the traditional process; 2. It can automatically perform full welding at the connection between the column shell and the metal ring body to ensure the sealing degree of the connection; 3. During the process of positioning the column shell and the metal ring body, the tightening degree can be flexibly adjusted to prevent scratching the workpiece to be processed during rotation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of a welding device for a water pump pump shell of the present invention; Figure 2 is another perspective schematic diagram of a welding device for a water pump pump shell of the present invention; Figure 3 is a partial structural diagram of a welding device for a water pump pump shell of the present invention; Figure 4Cross-sectional view of the cylinder part of a welding device for a water pump pump housing according to the present invention; Figure 5 For a welding device for a water pump pump housing according to the present invention Figure 4 Enlarged view of part A in Figure 6 For a welding device for a water pump pump housing according to the present invention Figure 5 Enlarged view of part B in Figure 7 Cross-sectional view of the support frame part of a welding device for a water pump pump housing according to the present invention; Figure 8 Schematic diagram of the welding mechanism part of a welding device for a water pump pump housing according to the present invention; Figure 9 Schematic diagram during welding of a welding device for a water pump pump housing according to the present invention.

[0015] 1. Base plate; 2. Vertical plate; 3. Support frame; 4. Rotating roller; 5. Driving shaft; 6. First motor; 7. Gravity rod; 8. Chute; 9. Cylinder block; 10. Lower inserting column; 11. Lower spacer; 12. Lower plug plate; 13. Upper spacer; 14. Upper inserting column; 15. Upper plug plate; 16. Activity slot; 17. Activity plate; 18. Limiting block; 19. Limiting column; 20. Sharpened tip; 21. Connecting cylinder; 22. Threaded column; 23. Guide cylinder; 24. Guide rod; 25. Guide rail; 26. Lead screw; 27. Second motor; 28. Threaded block; 29. Tooth plate; 30. Slide carriage; 31. Gear; 32. Third motor; 33. Vertical rod; 34. Slide block; 35. Extension frame; 36. Welding head. Detailed implementation method

[0016] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art can think of other obvious variations.

[0017] As Figures 1-9 shown, a welding device for a water pump pump housing includes a base plate 1. A vertical plate 2 is fixedly connected to the upper surface of the base plate 1. A support frame 3 is fixedly connected to the front surface of the vertical plate 2. A driving shaft 5 is rotatably connected to the inner side of the support frame 3. Three rotating rollers 4 are fixedly sleeved on the outer surface of the driving shaft 5. The lengths of the front and rear rotating rollers 4 are less than the length of the middle rotating roller 4. The upper part of the rotating roller 4 is exposed outside the support frame 3. The lower part of the rotating roller 4 is movably installed vertically along the telescopic mechanism with a gravity rod 7; a welding mechanism is further included above the side of the support frame 3.

[0018] A first motor 6 is fixedly installed on the rear surface of the vertical plate 2. The output shaft of the first motor 6 is fixedly connected to the rear end of the driving shaft 5. By driving the first motor 6, the driving shaft 5 rotates.

[0019] The telescopic mechanism includes an upper insertion post 14 fixedly connected to the lower surface of the support frame 3 and a lower insertion post 10 fixedly connected to the upper surface of the gravity rod 7. A cylinder body 9 is slidably sleeved between the upper insertion post 14 and the lower insertion post 10. A connecting cylinder 21 is fixedly connected to one side surface of the cylinder body 9. A threaded post 22 with a threaded fit is inserted at the port of the connecting cylinder 21. A multi-sided groove can be opened at the end face of the threaded post 22 to facilitate the rotation of the threaded post 22 with a wrench in the later stage.

[0020] A upper plug plate 15 is fixedly connected to the lower end of the upper insertion post 14, and a lower plug plate 12 is fixedly connected to the upper end of the lower insertion post 10. Both the upper plug plate 15 and the lower plug plate 12 are slidably matched with the inner wall of the cylinder body 9. An upper spacer 13 is fixedly arranged at the lower part of the inner wall of the cylinder body 9 near the upper plug plate 15, and a lower spacer 11 is fixedly arranged at the upper part of the inner wall of the cylinder body 9 near the lower plug plate 12. The upper spacer 13 and the lower spacer 11 are used to limit the telescopic distance and prevent the upper insertion post 14 or the lower insertion post 10 from telescoping excessively relative to the cylinder body 9.

[0021] An activity groove 16 is opened on the inner wall of the cylinder body 9. An activity plate 17 is slidably clamped into the activity groove 16. A plurality of limit posts 19 are vertically fixedly connected to the side surface of the activity plate 17. The limit posts 19 slide through the outer surface of the cylinder body 9, and a tapered tip 20 is opened at the end of the limit posts 19. The tapered tip 20 can prevent the limit posts 19 from being blocked by the port of the cylinder body 9, so as to unable to achieve the clamping effect on the cylinder body 9. The two adjacent upper and lower limit posts 19 are jointly clamped at the upper port of the cylinder body 9. Limit blocks 18 are respectively fixedly arranged at the upper and lower corners of the activity groove 16. The limit blocks 18 prevent the activity plate 17 from sliding excessively, resulting in the limit posts 19 detaching from the cylinder body 9.

[0022] A chute 8 is opened on the front surface of the vertical plate 2. The rear end of the gravity rod 7 is slidably inserted into the inner side of the chute 8. The design of the chute 8 further increases the stability of the lifting of the gravity rod 7.

[0023] A guide cylinder 23 is fixedly connected to the upper surface of the gravity rod 7 near the rear end. A guide rod 24 is slidably inserted at the upper end of the guide cylinder 23. The upper end of the guide rod 24 is fixedly connected to the lower surface of the support frame 3, improving the stability between the lifting gravity rod 7 and the rotating roller 4.

[0024] The welding mechanism includes an extension frame 35 movably installed above the bottom plate 1 through a servo mechanism. A welding head 36 is arranged at the end of the extension frame 35. The welding head 36 is a common laser welding head, which will not be elaborated here. In the combined use, a laser wire feeding mechanism can be designed for wire feeding. The welding head 36 can be designed to be swingable to form fish-scale welding. The above are all improvements based on prior art. In actual use, this equipment can be improved according to the product quality requirements, which will not be elaborated here.

[0025] The servo mechanism includes a guide rail 25 fixedly installed on one side of the base plate 1, a threaded block 28 slidably installed inside the guide rail 25. A lead screw 26 is rotatably installed inside the guide rail 25. The lead screw 26 passes through the threaded block 28 and is in threaded cooperation with each other. The rear end of the lead screw 26 is connected to the output shaft of the second motor 27, and the second motor 27 is fixedly connected to the rear end of the guide rail 25. The upper end of the threaded block 28 is fixedly connected with a toothed plate 29. A slide carriage 30 is slidably sleeved on the outer surface of the toothed plate 29. A third motor 32 is fixedly installed on the outer surface of the slide carriage 30. The output shaft of the third motor 32 is fixedly connected with a gear 31. The gear 31 meshes with the toothed plate 29. A slider 34 is fixedly installed on the rear surface of the slide carriage 30. A vertical rod 33 slidably passes through the inside of the slider 34. The vertical rod 33 is fixedly installed inside the toothed plate 29. One end of an extension bracket 35 is fixedly connected to one side of the slide carriage 30. When the second motor 27 rotates, the lead screw 26 rotates, and then the threaded block 28 moves in the front-back direction, adjusting the toothed plate 29 to move back and forth. By the operation of the third motor 32, the gear 31 rotates, and the gear 31 moves up and down relative to the toothed plate 29. This part of the mechanism can control the welding head 36 to move back and forth and up and down, ensuring that the distance from the welding head to the welding position is appropriate during welding.

[0026] During the welding of the cavity pump shell of the vacuum pump, after an employee lifts the gravity rod 7, another employee sequentially sleeved the column shell and two metal ring bodies between the rotating roller 4 and the gravity rod 7. After releasing the gravity rod 7, the gravity droops to support the column shell and the metal ring bodies. Then, the threaded column 22 is rotated to squeeze the gas inside the cylinder body 9, and the movable plate 17 is pushed to move. The limit post 19 catches the upper end port of the cylinder body 9, limiting the relative position of the upper insertion post 14 and the cylinder body 9. At this time, the air pressure inside the cylinder body 9 only acts on the lower insertion post 10, playing a role in tightening the column shell and the metal ring bodies, and at the same time, it will not cause scratching problems due to hard tightening. Driven by the first motor 6, the drive shaft 5 rotates, and the three rotating rollers 4 rotate, making the column shell and the metal ring bodies rotate slowly to cooperate with the welding head 36 above for welding. The welding process is stable, eliminating the preliminary welding steps of the previous workers, saving manpower and improving efficiency.

[0027] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. A water pump casing welding device, comprising a base plate (1), characterized in that: The upper surface of the bottom plate (1) is fixedly connected to a vertical plate (2), the front surface of the vertical plate (2) is fixedly connected to a support frame (3), the inner side of the support frame (3) is rotatably connected to a drive shaft (5), the outer surface of the drive shaft (5) is fixedly sleeved with three rotating rollers (4), the lengths of the front and rear rotating rollers (4) are shorter than the length of the middle rotating roller (4), the upper side of the rotating roller (4) is exposed outside the support frame (3), and a gravity rod (7) is movably installed vertically below the rotating roller (4) through a telescopic mechanism; It also includes a welding mechanism arranged above the side of the support frame (3).

2. A water pump casing welding device according to claim 1, characterized in that: A first motor (6) is fixedly mounted on the rear surface of the vertical plate (2), and an output shaft of the first motor (6) is fixedly connected to the rear end of the driving shaft (5).

3. A water pump casing welding device according to claim 1, characterized in that: The telescopic mechanism comprises an upper plug column (14) fixedly connected to the lower surface of the support frame (3), and a lower plug column (10) fixedly connected to the upper surface of the gravity rod (7); a cylinder body (9) is slidably sleeved between the upper plug column (14) and the lower plug column (10); a connecting tube (21) is fixedly connected to one side surface of the cylinder body (9); and a threaded column (22) with threaded matching is inserted at the end of the connecting tube (21).

4. A water pump casing welding device according to claim 3, characterized in that: The lower end of the upper plug post (14) is fixedly connected to an upper plug plate (15), and the upper end of the lower plug post (10) is fixedly connected to a lower plug plate (12). The upper plug plate (15) and the lower plug plate (12) are both slidably matched with the inner wall of the cylinder body (9). An upper spacer (13) is fixedly provided on the inner wall of the cylinder body (9) near the bottom of the upper plug plate (15), and a lower spacer (11) is fixedly provided on the inner wall of the cylinder body (9) near the top of the lower plug plate (12).

5. A water pump casing welding device according to claim 3, characterized in that: The inner wall of the cylinder body (9) is provided with a movable groove (16), a movable plate (17) is slidably inserted into the movable groove (16), a plurality of limit columns (19) are vertically fixedly connected to the side of the movable plate (17), the limit columns (19) slide through the outer surface of the cylinder body (9), and a sharpened head (20) is provided at the end of the limit column (19), two upper and lower adjacent limit columns (19) are jointly clamped at the upper end port of the cylinder body (9), and limit blocks (18) are respectively fixedly provided at the upper and lower corners in the movable groove (16).

6. A water pump casing welding device according to claim 1, characterized in that: A slide groove (8) is provided on the front surface of the vertical plate (2), and the rear end of the gravity rod (7) is slidably inserted into the inner side of the slide groove (8).

7. A water pump casing welding device according to claim 1, characterized in that: A guide cylinder (23) is fixedly connected to the upper surface of the gravity rod (7) near the rear end, a guide rod (24) is slidably inserted into the upper end of the guide cylinder (23), and the upper end of the guide rod (24) is fixedly connected to the lower surface of the support frame (3).

8. A water pump casing welding device according to claim 1, characterized in that: The welding mechanism comprises an extension frame (35) movably mounted above the base plate (1) via a servo mechanism, and a welding head (36) is provided at the end of the extension frame (35).

9. A water pump casing welding device according to claim 8, characterized in that: The servo mechanism comprises a guide rail (25) fixedly mounted on one side of the base plate (1), a threaded block (28) slidably mounted on the inner side of the guide rail (25), a screw rod (26) rotatably mounted on the inner side of the guide rail (25), the screw rod (26) passes through the threaded block (28) and is threadably engaged with each other, the rear end of the screw rod (26) is connected to the output shaft of the second motor (27), and the second motor (27) is fixedly connected to the rear end of the guide rail (25), and the upper end of the threaded block (28) is fixedly connected to a toothed plate (29), and the toothed plate (29) The outer surface sliding sleeve is provided with a slide (30), the outer surface of the slide (30) is fixedly mounted with a third motor (32), the output shaft of the third motor (32) is fixedly connected with a gear (31), the gear (31) is meshed with the toothed plate (29), a slider (34) is fixedly mounted on the rear surface of the slide (30), the inner side of the slider (34) slides through a vertical rod (33), the vertical rod (33) is fixedly mounted on the inner side of the toothed plate (29), and one side of the slide (30) is fixedly connected with one end of the extension frame (35).

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