A medium frequency DC inverter spot welding machine

Abstract

The utility model discloses a medium frequency DC inverter spot welding machine, including a spot welding machine body, one side of the spot welding machine body is fixedly connected to a spot welding table, a No. 1 adjustment through hole is penetrated at the top of the spot welding table and near a side position, a No. 1 adjustment screw is rotatably connected inside the No. 1 adjustment through hole, and one end of the No. 1 adjustment screw penetrates through a side wall inside the No. 1 adjustment through hole and is connected to a servo motor for transmission. The utility model drives the storage frame to move on the movable plate by rotating the No. 2 adjustment screw, so that the position that needs spot welding is located directly below the spot welding head, and then starts the servo motor, which drives the No. 1 adjustment screw to rotate, so that the movable plate engaged with it moves on the spot welding table, so that the spot welding machine body can spot weld the spot welding positions on the same line, with a simple structure and convenient adjustment, thereby improving the spot welding efficiency of the aluminum plate.

Description

Technical Field

[0001] The utility model relates to the technical field of electric welding machines, in particular to a medium frequency direct current inverter spot welding machine. Background Art

[0002] The medium frequency inverter DC spot welding machine is a power electronic device. Its working principle is mainly to control the current and voltage output by the inverter, and then control the magnetic flux density and welding current of the spot welding transformer to achieve the electric welding effect. It has the characteristics of high efficiency, energy saving and light weight, and is widely used in the field of metal welding.

[0003] In the prior art, for example, Chinese patent CN209532407U discloses a medium frequency inverter DC spot welding machine, comprising a base, a gas storage tank, a first gas pipe, and a gas pressure proportional valve, wherein the first gas pipe is arranged on one side of the gas storage tank, the gas pressure proportional valve is arranged below the first gas pipe, a second gas pipe is arranged in front of the gas pressure proportional valve, a body is arranged below the gas storage tank, a control room is arranged on one side of the body, a switch is arranged in front of the control room, a lamp tube is arranged on the other side of the body, a rotating valve is arranged in front of the lamp tube, a rotating lamp tube is arranged in front of the rotating valve, a second support seat is arranged in front of the body, a cylinder is arranged above the second support seat, and an anode plate is arranged below the cylinder.

[0004] At present, most medium-frequency DC inverter spot welding machines need to perform spot welding on a straight line of the aluminum plate one by one when welding aluminum plates. The whole process requires support and pushing by staff, which is inconvenient to operate and takes a lot of time, reducing the efficiency of aluminum plate welding. Utility Model Content

[0005] The purpose of the utility model is to provide a medium frequency DC inverter spot welding machine to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a medium-frequency DC inverter spot welding machine, comprising a spot welding machine body, one side of the spot welding machine body is fixedly connected to a spot welding table, a No. 1 adjusting through hole is penetrated at the top of the spot welding table and near one side, a No. 1 adjusting screw rod is rotatably connected inside the No. 1 adjusting through hole, one end of the No. 1 adjusting screw rod penetrates through a side wall inside the No. 1 adjusting through hole and is transmission-connected to a servo motor, the outer surface of the servo motor is fixedly connected to one side of the spot welding machine body, a movable plate is meshed on the outer surface of the No. 1 adjusting screw rod, the bottom end of the movable plate is slidably arranged with the top end of the spot welding table, a No. 2 adjusting through hole is penetrated at the top of the movable plate, a No. 2 adjusting through hole is rotatably connected with the No. 2 adjusting screw rod, the outer surface of the No. 2 adjusting screw rod is meshed with a storage frame, fixing mechanisms are arranged on both sides of the storage frame and near both ends, and the bottom end of the storage frame is slidably arranged with the top end of the movable plate.

[0007] As a further preferred embodiment of the present technical solution, one end of the No. 2 adjusting screw rod passes through the inner side wall of the No. 2 adjusting through hole and is fixedly connected to a polygonal connecting rod, the outer surface of the polygonal connecting rod is slidably connected to a movable sleeve, one side of the movable plate is fixedly connected to a fixed seat at the position of the No. 2 adjusting screw rod, and one end of the movable sleeve is plugged into the interior of the fixed seat.

[0008] As a further preferred embodiment of the present technical solution, a limiting block is fixedly connected to one end of the polygonal connecting rod, and friction patterns are formed on the outer surface of the movable sleeve.

[0009] As a further preferred embodiment of the present technical solution, the fixing mechanism includes a rotating seat, the bottom end of the rotating seat is fixedly connected to the top end of the storage frame, a driven rod is rotatably connected inside the rotating seat, control handles are rotatably connected on both sides of the rotating seat, the control handles are rotatably connected to both sides of the driven rod, a screw is threadedly connected inside the driven rod, and a clamping plate is rotatably connected to the bottom end of the screw.

[0010] As a further preferred embodiment of the present technical solution, two positioning columns are slidably connected inside the driven rod, and the bottom ends of the two positioning columns are fixedly connected to the top end of the clamping plate.

[0011] As a further preferred embodiment of the present technical solution, a T-shaped slide groove is provided at the top of the spot welding station and near the two sides, and two T-shaped slide bars are fixedly connected at the bottom of the movable plate and near the two sides, and the outer surfaces of the two T-shaped slide bars are respectively slidably connected to the inside of the two T-shaped slide grooves.

[0012] As a further preferred embodiment of the present technical solution, four positioning grooves are formed on the top of the movable plate, four positioning blocks are fixedly connected to the bottom of the storage frame, and the outer surfaces of the four positioning blocks are slidably connected to the inner surfaces of the four positioning grooves respectively.

[0013] The utility model provides a medium frequency DC inverter spot welding machine, which has the following beneficial effects:

[0014] (1) The utility model drives the storage frame to move on the movable plate by rotating the No. 2 adjusting screw rod, so that the position requiring spot welding is located directly below the spot welding head, and then starts the servo motor, which drives the No. 1 adjusting screw rod to rotate, so that the movable plate engaged with the No. 1 adjusting screw rod moves on the spot welding table, so that the spot welding machine body can spot weld the spot welding positions on the same line. The utility model has a simple structure and is easy to adjust, thereby improving the spot welding efficiency of the aluminum plate.

[0015] (2) The utility model pushes the movable sleeve into the interior of the fixed seat along the polygonal connecting rod, so that the No. 2 adjusting screw is limited, thereby fixing the No. 2 adjusting screw, making the adjusted storage frame more stable after adjustment and improving the spot welding accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the spot welding station of the utility model;

[0018] Figure 3 This is an exploded schematic diagram of the structure of the welding station of the utility model;

[0019] Figure 4 For this utility model Figure 3 A magnified schematic diagram of the structure of the middle A region;

[0020] Figure 5 It is a schematic diagram of the fixing mechanism structure of the utility model.

[0021] In the figure: 1. spot welding machine body; 2. spot welding table; 3. No. 1 adjusting through hole; 4. No. 1 adjusting screw; 5. servo motor; 6. movable plate; 7. No. 2 adjusting through hole; 8. No. 2 adjusting screw; 9. storage frame; 10. fixing mechanism; 101. rotating seat; 102. driven rod; 103. control handle; 104. screw; 105. clamping plate; 106. positioning column; 11. polygonal connecting rod; 12. movable sleeve; 13. fixed seat; 14. limiting block; 15. friction pattern; 16. T-shaped slide groove; 17. T-shaped slide rod; 18. positioning groove; 19. positioning block. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0023] The utility model provides a technical solution: Figure 1 , Figure 2 and Figure 3 As shown, in this embodiment, a medium frequency DC inverter spot welding machine includes a spot welding machine body 1, one side of the spot welding machine body 1 is fixedly connected to a spot welding table 2, a No. 1 adjustment through hole 3 is penetrated at the top of the spot welding table 2 and close to one side, a No. 1 adjustment screw rod 4 is rotatably connected inside the No. 1 adjustment through hole 3, one end of the No. 1 adjustment screw rod 4 penetrates through a side wall inside the No. 1 adjustment through hole 3 and is transmission-connected to a servo motor 5, the outer surface of the servo motor 5 is fixedly connected to one side of the spot welding machine body 1, the outer surface of the No. 1 adjustment screw rod 4 is meshed with a movable plate 6, the bottom end of the movable plate 6 is slidably arranged with the top of the spot welding table 2, and the top of the movable plate 6 is penetrated with a No. 2 adjustment through hole Hole 7, the No. 2 adjusting through hole 7 is rotatably connected with the No. 2 adjusting screw rod 8, the outer surface of the No. 2 adjusting screw rod 8 is meshed with a storage frame 9, and fixing mechanisms 10 are arranged on both sides of the storage frame 9 and near the two ends. The bottom end of the storage frame 9 is slidably arranged with the top end of the movable plate 6, wherein, by setting the No. 1 adjusting screw rod 4, the movable plate 6 can be driven to move, so that the spot welding machine body 1 can continuously spot weld the aluminum plate, and by setting the fixing mechanism 10, the aluminum plate can be fixed, and by setting the No. 2 adjusting screw rod 8, the position of the storage frame 9 can be adjusted, the adjustment accuracy is improved, and it is convenient to align the spot welding position with the spot welding head.

[0024] like Figure 2 , Figure 3 and Figure 4 As shown, one end of the No. 2 adjusting screw 8 passes through the inner side wall of the No. 2 adjusting through hole 7 and is fixedly connected to a polygonal connecting rod 11, and a movable sleeve 12 is slidably connected to the outer surface of the polygonal connecting rod 11. A fixing seat 13 is fixedly connected to one side of the movable plate 6 and located at the position of the No. 2 adjusting screw 8. One end of the movable sleeve 12 is plugged into the interior of the fixing seat 13. By setting the movable sleeve 12, the No. 2 adjusting screw 8 can be driven to rotate by cooperating with the polygonal connecting rod 11. By setting the fixed seat 13, the No. 2 adjusting screw 8 can be fixed by cooperating with the movable sleeve 12.

[0025] like Figure 4 As shown, a limiting block 14 is fixedly connected to one end of the polygonal connecting rod 11, and a friction pattern 15 is provided on the outer surface of the movable sleeve 12. By setting the limiting block 14, the polygonal connecting rod 11 can be limited to prevent it from falling off, and by setting the friction pattern 15, the user can easily rotate the movable sleeve 12.

[0026] like Figure 5As shown, the fixing mechanism 10 includes a rotating seat 101, the bottom end of the rotating seat 101 is fixedly connected to the top of the storage frame 9, a driven rod 102 is rotatably connected inside the rotating seat 101, control handles 103 are rotatably connected on both sides of the rotating seat 101, the control handles 103 are rotatably connected to both sides of the driven rod 102, a screw 104 is threadedly connected inside the driven rod 102, and a clamping plate 105 is rotatably connected to the bottom end of the screw 104.

[0027] like Figure 5 As shown, two positioning columns 106 are slidably connected inside the driven rod 102, and the bottom ends of the two positioning columns 106 are fixedly connected to the top of the clamping plate 105, which can facilitate the fixing of the aluminum plate and can position the clamping plate 105 to prevent it from being skewed and improve the fixing strength.

[0028] like Figure 2 and Figure 3 As shown, a T-shaped slide groove 16 is provided at the top of the spot welding station 2 and near the two sides, and two T-shaped slide bars 17 are fixedly connected to the bottom of the movable plate 6 and near the two sides. The outer surfaces of the two T-shaped slide bars 17 are respectively slidably connected to the inside of the two T-shaped slide grooves 16, which can prevent the movable plate 6 from falling off and improve stability.

[0029] like Figure 2 and Figure 3 As shown, four positioning grooves 18 are provided at the top of the movable plate 6, and four positioning blocks 19 are fixedly connected to the bottom of the storage frame 9. The outer surfaces of the four positioning blocks 19 are slidably connected to the inner surfaces of the four positioning grooves 18 respectively, which can prevent the storage frame 9 from tilting during the movement and improve stability and welding accuracy.

[0030] The utility model provides a medium frequency DC inverter spot welding machine, the specific working principle is as follows:

[0031] The staff puts the aluminum plate to be spot welded into the storage frame 9, and then pulls the control handle 103 once. The control handle 103 drives the driven rod 102 to rotate around the rotating seat 101, so that the clamping plate 105 clamps and fixes the aluminum plate. Then, the movable sleeve 12 is pulled out from the inside of the fixed seat 13 and rotated. The rotation of the movable sleeve 12 drives the No. 2 adjusting screw 8 to rotate. During the rotation of the No. 2 adjusting screw 8, the storage frame 9 is driven to move, so that the spot welding position of the aluminum plate is located directly below the spot welding head. Then, the servo motor 5 is started, and the servo motor 5 drives the No. 1 adjusting screw 4 to rotate, so that the movable plate 6 engaged with it moves on the spot welding table 2, so that the spot welding machine body 1 can spot weld the spot welding positions on the same line.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A medium frequency DC inverter spot welding machine, comprising a spot welding machine body (1), characterized in that: One side of the spot welding machine body (1) is fixedly connected to a spot welding platform (2); a first adjustment through hole (3) is provided through the top of the spot welding platform (2) and near one side; a first adjustment screw rod (4) is rotatably connected inside the first adjustment through hole (3); one end of the first adjustment screw rod (4) passes through a side wall inside the first adjustment through hole (3) and is transmission-connected to a servo motor (5); the outer surface of the servo motor (5) is fixedly connected to one side of the spot welding machine body (1); the outer surface of the first adjustment screw rod (4) is A movable plate (6) is meshed on the surface, and the bottom end of the movable plate (6) is slidably arranged with the top end of the spot welding table (2). A second adjustment through hole (7) is penetrated through the top end of the movable plate (6), and a second adjustment screw rod (8) is rotatably connected inside the second adjustment through hole (7). A storage frame (9) is meshed on the outer surface of the second adjustment screw rod (8). Fixing mechanisms (10) are arranged on both sides of the storage frame (9) and near the two ends. The bottom end of the storage frame (9) is slidably arranged with the top end of the movable plate (6).

2. A medium frequency DC inverter spot welding machine according to claim 1, characterized in that: One end of the No. 2 adjusting screw rod (8) passes through a side wall of the No. 2 adjusting through hole (7) and is fixedly connected to a polygonal connecting rod (11); a movable sleeve (12) is slidably connected to the outer surface of the polygonal connecting rod (11); a fixed seat (13) is fixedly connected to one side of the movable plate (6) and located at the position of the No. 2 adjusting screw rod (8); one end of the movable sleeve (12) is plugged into the interior of the fixed seat (13).

3. A medium frequency DC inverter spot welding machine according to claim 2, characterized in that: One end of the polygonal connecting rod (11) is fixedly connected to a limiting block (14), and the outer surface of the movable sleeve (12) is provided with friction lines (15).

4. A medium frequency DC inverter spot welding machine according to claim 1, characterized in that: The fixing mechanism (10) comprises a rotating seat (101), the bottom end of the rotating seat (101) is fixedly connected to the top end of the storage frame (9), a driven rod (102) is rotatably connected inside the rotating seat (101), control handles (103) are rotatably connected on both sides of the rotating seat (101), the inside of the control handle (103) is rotatably connected to both sides of the driven rod (102), a screw rod (104) is threadedly connected inside the driven rod (102), and a pressing plate (105) is rotatably connected at the bottom end of the screw rod (104).

5. A medium frequency DC inverter spot welding machine according to claim 4, characterized in that: Two positioning columns (106) are slidably connected inside the driven rod (102), and the bottom ends of the two positioning columns (106) are fixedly connected to the top end of the pressing plate (105).

6. A medium frequency DC inverter spot welding machine according to claim 1, characterized in that: A T-shaped slide groove (16) is provided at the top of the spot welding table (2) and near the two sides, and two T-shaped slide bars (17) are fixedly connected to the bottom of the movable plate (6) and near the two sides, and the outer surfaces of the two T-shaped slide bars (17) are respectively slidably connected to the inside of the two T-shaped slide grooves (16).

7. A medium frequency DC inverter spot welding machine according to claim 6, characterized in that: The top of the movable plate (6) is provided with four positioning grooves (18), the bottom of the storage frame (9) is fixedly connected with four positioning blocks (19), and the outer surfaces of the four positioning blocks (19) are respectively slidably connected with the inner surfaces of the four positioning grooves (18).

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