Energy-saving precise alternating current spot welding machine

Abstract

The utility model discloses an energy-saving precise alternating current spot welding machine which comprises a moving mechanism, a translation mechanism, a spot welding mechanism, a clamp and a workpiece plate body, the bottom of the translation mechanism and the bottom of the spot welding mechanism are fixedly connected with the upper surface of the moving mechanism, the clamp comprises second motors, second lead screws, a connecting plate, a fixing block and a shell, a fixing table is arranged on the inner wall of the bottom of the shell, and the two second motors are fixedly connected to the inner walls of the two sides of the shell and connected with one ends of the second lead screws. The other end of the second lead screw is rotationally connected to the bottom of the shell, the second lead screw penetrates through the connecting plate and the fixing block to be connected with the connecting plate, a rectangular boss is arranged at one end of the connecting plate, a rectangular sliding groove is formed in the position, close to the connecting plate, of the inner wall of the shell, and the rectangular boss is matched with the rectangular sliding groove. Compared with the prior art, the spot welding device for workpiece machining has the advantages that the spot welding device for workpiece machining can be moved conveniently, workpieces can be clamped stably, and any position of the surfaces of the workpieces can be welded.

Description

Technical Field

[0001] The utility model relates to the technical field of workpiece spot welding, in particular to an energy-saving precision AC spot welding machine. Background Art

[0002] AC spot welding machine is a machine that can weld workpieces firmly together, which can make better use of materials. It is widely used in hardware, household appliances manufacturing, workpiece processing and manufacturing and other fields. As people's requirements for products become more and more stringent, their requirements for AC welding machines are also getting higher and higher.

[0003] However, the patents in the prior art have the following disadvantages:

[0004] The prior art patent uses a clamping plate to fix the workpiece. When the workpiece is thin or the clamping pressure is too large, this fixing method easily causes the workpiece surface to deform, affecting welding. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the above technical defects and provide a spot welding device for workpiece processing which can be easily moved, can not only stably clamp the workpiece but also can weld any position of the workpiece surface.

[0006] In order to solve the above problems, the technical solution of the utility model is: an energy-saving precision AC spot welding machine, including a moving mechanism, a translation mechanism, a spot welding mechanism, a fixture and a workpiece plate;

[0007] The bottom of the translation mechanism and the bottom of the spot welding mechanism are both fixedly connected to the upper surface of the moving mechanism. The fixture includes a second motor, a second screw rod, a connecting plate, a fixed block and a shell. A fixed platform is provided on the inner wall of the bottom of the shell. The workpiece plate is located on the fixed platform. The two second motors are fixedly connected to the inner walls on both sides of the shell. The output shaft of the second motor is connected to one end of the second screw. The other end of the second screw is rotatably connected to the bottom of the shell. The second screw penetrates the connecting plate. The upper surface of the fixed block is fixedly connected to the bottom of the connecting plate. A rectangular boss is provided at one end of the connecting plate. A rectangular slide groove is provided on the inner wall of the shell near the connecting plate, and the rectangular boss and the rectangular slide groove cooperate with each other.

[0008] Furthermore, the moving mechanism includes a base 2 and four universal wheels, an electric telescopic column is provided at the upper end of the universal wheel, a groove is provided at the bottom of the base 2, the electric telescopic column is fixedly connected to the groove of the base 2, and the diameter of the universal wheel is smaller than the inner diameter of the groove.

[0009] Furthermore, the translation mechanism includes a base one, a motor one, a moving platform, a sliding rod and a lead screw one. The base one is provided with an L-shaped fixed plate, a fixed plate one and a fixed plate two. The output shaft of the motor one passes through the L-shaped fixed plate, and the output shaft of the motor one is connected to the lead screw one. Bearings are provided in the center of the two fixed plates two. The lead screw one passes through the moving platform and its two ends are tightly clamped in the bearing in the center of the fixed plate two. The sliding rod passes through the moving platform and its two ends are fixedly connected to the side wall of the fixed plate one. The fixed plate two is located in the center of the two fixed plates one.

[0010] Furthermore, the bottom of the shell is fixedly connected to the upper surface of the moving platform in the translation mechanism.

[0011] Furthermore, the spot welding mechanism includes a column, a connecting block, a slider and a spot welding machine body. An electric push rod is provided on the upper surface of the column. A slide groove is provided on one side of each of the two connecting blocks. The slide groove cooperates with the slider. The spot welding machine body is tightly clamped in the center of the slider. One end of the electric push rod is fixedly connected to the side wall of the slider.

[0012] Furthermore, the spot welding machine body includes a spot welding head and a fixing bolt. A groove is provided at the bottom of the spot welding machine body, and the spot welding head is inserted into the groove. A threaded through hole is provided on the side wall of the spot welding machine body near the groove, and the two fixing bolts cooperate with the threaded holes.

[0013] Furthermore, the bottom of the column is fixedly connected to the second base, and the side wall of the column does not contact the side wall of the first base.

[0014] The advantages of the utility model compared with the existing technology are:

[0015] (1) The utility model is provided with a clamp to solve the problem of deformation of the workpiece when it is fixed. When in use, the second motor is working, one end of the second motor is connected to the second lead screw, the second lead screw passes through the connecting plate, and the bottom of the second lead screw is fixedly connected to the inner wall of the bottom of the housing of the clamp. Therefore, when the second motor rotates, the connecting plate on the second lead screw can be raised and lowered, thereby completing the fixation of the workpiece without causing it to deform.

[0016] (2) The utility model is provided with a translation mechanism and a spot welding mechanism, which solves the problem of spot welding at any position on the workpiece surface. When in use, the motor 1 in the translation mechanism works, and one end of the motor 1 is connected to the lead screw 1, and the moving platform is penetrated by the lead screw. Therefore, when the output shaft of the motor 1 rotates, it will drive the moving platform to translate. Since the fixture is fixed on the moving platform, the horizontal movement of the fixture is realized. The electric push rod in the spot welding mechanism works. Since the spot welding machine body is fixed on the slider, the slider cooperates with the slide groove on one side of the connecting block to complete the vertical movement of the spot welding machine body. Since the moving directions of the spot welding machine body and the fixture are perpendicular to each other, spot welding at any position on the workpiece surface can be satisfied.

[0017] (3) The utility model is provided with a moving mechanism to solve the problem of inconvenient movement. When in use, the electric telescopic column in the moving mechanism is extended to push out the universal wheel. After the device is moved to a suitable position, the electric telescopic column is retracted to store the universal wheel into the groove at the bottom of the moving mechanism, which is convenient for flexible adjustment of the position of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereoscopic diagram of an energy-saving precision AC spot welding machine of the utility model.

[0019] Figure 2 It is a partial stereoscopic diagram of an energy-saving precision AC spot welding machine of the utility model.

[0020] Figure 3 The utility model is a front view and a cross-sectional view of a fixture in an energy-saving precision AC spot welding machine.

[0021] Figure 4 It is a partial stereoscopic diagram of an energy-saving precision AC spot welding machine of the utility model.

[0022] As shown in the figure: 1. Moving mechanism; 2. Translation mechanism; 3. Spot welding mechanism; 4. Clamp; 5. Base 1; 6. Motor 1; 7. Fixed plate 1; 8. Fixed plate 2; 9. Slide rod; 10. Screw 1; 11. Motor 2; 12. Screw 2; 13. Connecting plate; 14. Fixed block; 15. Workpiece plate; 16. Fixed table; 17. Housing; 18. Rectangular slide; 19. Base 2; 20. Column; 21. Connecting block; 22. Spot welding machine body; 23. Electric push rod; 24. Spot welding head; 25. Fixing bolt; 26. Moving table; 27. Slider. DETAILED DESCRIPTION

[0023] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings, wherein the same parts are represented by the same reference numerals.

[0024] It should be noted that the words "front", "rear", "left", "right", "up" and "down" used in the following description refer to directions in the drawings, and the words "inside" and "outside" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] In order to make the contents of the present invention more clearly understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention.

[0026] like Figures 1 to 4As shown, an energy-saving precision AC spot welding machine includes a moving mechanism 1, a translation mechanism 2, a spot welding mechanism 3, a fixture 4 and a workpiece plate 15; the bottom of the translation mechanism 2 and the bottom of the spot welding mechanism 3 are fixedly connected to the upper surface of the moving mechanism 1, the fixture 4 includes a motor 11, a screw rod 1, a connecting plate 13, a fixing block 14 and a shell 17, a fixing table 16 is provided on the inner wall of the bottom of the shell 17, the workpiece plate 15 is located on the fixing table 16, two motors 11 are fixedly connected to the inner walls on both sides of the shell 17, and the output shaft of the motor 11 is connected to one end of the screw rod 12 The other end of the lead screw 12 is rotatably connected to the bottom of the shell 17. The lead screw 12 passes through the connecting plate 13. The upper surface of the fixed block 14 is fixedly connected to the bottom of the connecting plate 13. The rotation of the lead screw 12 drives the connecting plate 13 to achieve lifting and lowering. The workpiece is pressed up and down. This fixing method will not cause it to deform. A rectangular boss is provided at one end of the connecting plate 13, and a rectangular slide groove 18 is provided on the inner wall of the shell 17 near the connecting plate 13. The rectangular boss and the rectangular slide groove 18 cooperate with each other, and the sliding connection reduces the vibration during movement and ensures the stability of the connecting plate 13 during movement.

[0027] like Figure 1 As shown, the mobile mechanism 1 includes a base 19 and four universal wheels. An electric telescopic column is provided at the upper end of the universal wheel, and a groove is provided at the bottom of the base 19. The electric telescopic column is fixedly connected to the groove of the base 19. The diameter of the universal wheel is smaller than the inner diameter of the groove, which facilitates the movement of the device.

[0028] like Figure 2 As shown, the translation mechanism 2 includes a base 5, a motor 6, a moving platform 26, a slide bar 9 and a lead screw 10. An L-shaped fixed plate, a fixed plate 7 and a fixed plate 28 are provided on the base 5. The motor 6 can realize forward and reverse rotation. The output shaft of the motor 6 passes through the L-shaped fixed plate. The output shaft of the motor 6 is connected to the lead screw 10. Bearings are provided in the center of the two fixed plates 28. The lead screw 10 passes through the moving platform 26 and its two ends are tightly clamped in the bearing in the center of the fixed plate 28. The slide bar 9 passes through the moving platform 26 and the two ends of the slide bar 9 are fixedly connected to the side walls of the fixed plate 7. The fixed plate 28 is located in the center of the two fixed plates 7. The bottom of the housing 17 is fixedly connected to the upper surface of the moving platform 26 in the translation mechanism 2. When the output shaft of the motor 6 rotates, it will drive the moving platform 26 to translate. Since the clamp 4 is fixed on the moving platform 26, the horizontal reciprocating movement of the clamp 4 is realized.

[0029] like Figure 4As shown, the spot welding mechanism 3 includes a column 20, a connecting block 21, a slider 27 and a spot welding machine body 22. An electric push rod 23 is provided on the upper surface of the column 20. The length of the electric push rod 23 is equal to the length of the slide groove. Slide grooves are provided on one side of the two connecting blocks 21. The slide grooves cooperate with the slider 27. The spot welding machine body is tightly clamped in the center of the slider 27. One end of the electric push rod 23 is fixedly connected to the side wall of the slider 27. The spot welding machine body 22 includes a spot welding head 24 and a fixing bolt 25. A groove is provided at the bottom of the spot welding machine body 22. The welding head 24 is inserted into the groove, and a threaded through hole is provided on the side wall of the spot welding machine body 22 near the groove. Two fixing bolts 25 cooperate with the threaded holes to facilitate the fixing of the welding head and the replacement of the spot welding head 24. The bottom of the column 20 is fixedly connected to the base 19, and the side wall of the column 20 does not contact the side wall of the base 15. When the spot welding machine body 22 and the clamp 4 move at the same time, the welding head will not touch the inner wall of the outer shell 17 of the clamp 4, that is, the moving range of the spot welding machine body 22 is only within the outer shell 17 of the clamp 4.

[0030] In specific use, the operator first moves the device to a suitable position through the mobile mechanism 1, and then places the workpiece plate 15 on the fixed table 16, and then turns on the power of the motor 11. Since one end of the motor 11 is connected to the lead screw 12, the lead screw 12 passes through the connecting plate 13, and the bottom of the lead screw 12 is fixedly connected to the bottom inner wall of the housing 17 of the fixture 4, when the motor 11 rotates, the connecting plate 13 on the lead screw 12 can be lifted and lowered, so that the fixing block 14 is pressed on both sides of the workpiece plate 15 to complete the fixation of the workpiece plate 15, and the power of the motor 6 is turned on, and one end of the motor 6 is turned on. It is connected to the lead screw 10, and the movable platform 26 is penetrated by the lead screw, so when the output shaft of the motor 6 rotates, it will drive the movable platform 26 to move horizontally. The clamp 4 is fixed on the movable platform 26, and the workpiece plate 15 can move horizontally. The workpiece plate 15 is moved to the position where welding is required, and the power of the electric push rod 23 in the spot welding mechanism 3 is turned on. Since the spot welding machine body 22 is fixed on the slider 27, the slider 27 cooperates with the slide groove on one side of the connecting block 21 to complete the vertical movement of the spot welding machine body 22. With the movement of the clamp 4, continuous welding of any position on the surface of the workpiece plate 15 can be completed.

[0031] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. An energy-saving precision AC spot welding machine, characterized in that: It comprises a moving mechanism (1), a translation mechanism (2), a spot welding mechanism (3), a clamp (4) and a workpiece plate (15); The bottom of the translation mechanism (2) and the bottom of the spot welding mechanism (3) are both fixedly connected to the upper surface of the moving mechanism (1); the clamp (4) comprises a second motor (11), a second screw rod, a connecting plate (13), a fixing block (14) and a housing (17); a fixing platform (16) is provided on the inner wall of the bottom of the housing (17); the workpiece plate (15) is located on the fixing platform (16); the two second motors (11) are fixedly connected to the inner walls on both sides of the housing (17); the second motors (11) The output shaft is connected to one end of the second lead screw (12), and the other end of the second lead screw (12) is rotatably connected to the bottom of the housing (17). The second lead screw (12) passes through the connecting plate (13). The upper surface of the fixing block (14) is fixedly connected to the bottom of the connecting plate (13). A rectangular boss is provided at one end of the connecting plate (13). A rectangular slide groove (18) is provided on the inner wall of the housing (17) near the connecting plate (13), and the rectangular boss and the rectangular slide groove (18) cooperate with each other.

2. The energy-saving precision AC spot welding machine according to claim 1, characterized in that: The mobile mechanism (1) comprises a second base (19) and four universal wheels, the upper end of the universal wheel is provided with an electric telescopic column, the bottom of the second base (19) is provided with a groove, the electric telescopic column is fixedly connected to the groove of the second base (19), and the diameter of the universal wheel is smaller than the inner diameter of the groove.

3. The energy-saving precision AC spot welding machine according to claim 1 is characterized in that: The translation mechanism (2) comprises a base (5), a motor (6), a moving platform (26), a slide bar (9) and a lead screw (10). The base (5) is provided with an L-shaped fixed plate, a fixed plate (7) and a fixed plate (8). The output shaft of the motor (6) passes through the L-shaped fixed plate. The output shaft of the motor (6) is connected to the lead screw (10). Bearings are provided in the center of the two fixed plates (8). The lead screw (10) passes through the moving platform (26) and its two ends are tightly clamped in the bearings in the center of the fixed plate (8). The slide bar (9) passes through the moving platform (26) and its two ends are fixedly connected to the side walls of the fixed plate (7). The fixed plate (8) is located in the center of the two fixed plates (7).

4. The energy-saving precision AC spot welding machine according to claim 3 is characterized in that: The bottom of the housing (17) is fixedly connected to the upper surface of the moving platform (26) in the translation mechanism (2).

5. The energy-saving precision AC spot welding machine according to claim 1, characterized in that: The spot welding mechanism (3) comprises a column (20), a connecting block (21), a slider (27) and a spot welding machine body (22); an electric push rod (23) is provided on the upper surface of the column (20); a slide groove is provided on one side of each of the two connecting blocks (21); the slide groove and the slider (27) cooperate with each other; the spot welding machine body is tightly clamped in the center of the slider (27); one end of the electric push rod (23) is fixedly connected to the side wall of the slider (27).

6. The energy-saving precision AC spot welding machine according to claim 5, characterized in that: The spot welding machine body (22) comprises a spot welding head (24) and fixing bolts (25); a groove is provided at the bottom of the spot welding machine body (22); the spot welding head (24) is inserted into the groove; a threaded through hole is provided at a position near the groove on the side wall of the spot welding machine body (22); and two fixing bolts (25) cooperate with the threaded holes.

7. The energy-saving precision AC spot welding machine according to claim 6, characterized in that: The bottom of the column (20) is fixedly connected to the second base (19), and the side wall of the column (20) does not contact the side wall of the first base (5).

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