Automatic feeding mechanism of spot welding machine

Abstract

The utility model relates to the technical field of welding equipment, and discloses an automatic feeding mechanism of a spot welding machine, which comprises a support plate, the rear side of the top of the support plate is fixedly connected with an upper electric welding machine, the top of the support plate is provided with two chutes, the tops of the chutes are slidably connected with fixed blocks, and the inner wall of the chute on the rear side is rotatably connected with a reciprocating screw rod; a reciprocating sliding block is arranged on the outer wall of the reciprocating screw rod, the rear side of the reciprocating sliding block is connected with the bottom of the upper electric welding machine through a switch assembly, the top of the reciprocating sliding block is fixedly connected with the bottom of a fixing block, two adjusting grooves are formed in the rear side of the top of the fixing block, and clamping blocks are slidably connected to the inner walls of the two adjusting grooves; and fixing assemblies are arranged at the tops of the clamping blocks. In the utility model, firstly, the crank is shaken, the crank drives the first threaded rod to rotate, the first threaded rod rotates to drive the driving gear to rotate, the driving gear rotates to drive the bull gear to rotate, and the bull gear rotates to drive the transmission rod and the transmission gear to rotate.

Description

Technical Field

[0001] The utility model relates to the technical field of welding equipment, in particular to an automatic feeding mechanism for a spot welder. Background Art

[0002] A spot welder is a mechanical device that adopts the principle of double-sided and double-point overcurrent welding. During operation, two electrodes press on the workpiece, causing a certain contact resistance to form between the two layers of metal under the pressure of the two electrodes. When the welding current flows from one electrode to the other, instantaneously heat fusion welding is formed at the two contact resistance points. Moreover, the welding current instantaneously flows from the other electrode along the two workpieces to this electrode to form a loop, and the internal structure of the welded workpiece will not be damaged.

[0003] Currently, the welding process is manually operated. Workers manually place the workpiece at the designated position and then achieve welding connection through a resistance welding machine. This method has poor positioning accuracy, high labor intensity, and is prone to danger. In view of this technical problem, the present application proposes an automatic feeding mechanism for a spot welder. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose an automatic feeding mechanism for a spot welder, aiming to improve the existing method in which workers hold the workpiece for welding, which has poor positioning accuracy, high labor intensity, and is prone to danger.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] An automatic feeding mechanism for a spot welder includes a support plate. A top rear side of the support plate is fixedly connected with an upper welding machine. Two sliding grooves are opened at the top of the support plate. A fixed block is slidably connected to the top of the sliding groove. A reciprocating screw rod is rotatably connected to an inner wall of the rear sliding groove. A reciprocating slider is arranged on an outer wall of the reciprocating screw rod. The rear side of the reciprocating slider is connected to a bottom of the upper welding machine through a switch assembly. A top of the reciprocating slider is fixedly connected to a bottom of the fixed block. Two adjusting grooves are opened at a top rear side of the fixed block. A clamping block is slidably connected to each of inner walls of the two adjusting grooves. A fixing component is arranged on a top of each clamping block. A first threaded rod is rotatably connected to each of inner walls of the two adjusting grooves. An outer wall of each first threaded rod is threadedly connected to the clamping block. A driving gear is fixedly connected to each of two adjacent sides of the two first threaded rods. The outer walls of the two driving gears are connected through a transmission component. A bottom rear side of the support plate is fixedly connected with a lower spot welder.

[0007] Further, the switch assembly includes a slider fixedly connected to the rear side of the reciprocating slider. A sliding top block is slidably connected to the top of the slider. A switch groove is formed at the bottom of the support plate. A self-resetting push-button switch is arranged on the inner wall of the switch groove. The contact base of the self-resetting push-button switch is connected to the power supply wire of the upper electric welding machine. A push switch is slidably connected to the inner wall of the switch groove. The top of the push switch abuts against the self-resetting push-button switch. The left side of the sliding top block abuts against the right side of the bottom of the self-resetting push-button switch.

[0008] Further, the fixing assembly includes two fixing grooves formed on the adjacent sides of the two clamping blocks. Clamping plates are slidably connected to the inner walls of the fixing grooves. Second threaded rods are rotatably connected to the inner walls of the fixing grooves. The outer walls of the second threaded rods are threadedly connected to the separated sides of the two clamping plates. Adjusting knobs are rotatably connected to the tops of the separated sides of the two clamping blocks. The bottom ends of the adjusting knobs are fixedly connected to the top ends of the second threaded rods.

[0009] Further, the transmission assembly includes a reverse gear meshed with the left side of the outer wall of the rear drive gear slider. Three transmission gears are meshed with the left side of the outer wall of the reverse gear. A transmission rod is fixedly connected to the middle of the left transmission gear. The transmission rod is rotatably connected to the inner wall of the support plate. A large gear is fixedly connected to the front end of the transmission rod. The outer wall of the right drive gear is meshed with the outer wall of the right large gear.

[0010] Further, a motor is fixedly connected to the rear end of the right side of the support plate. The right end of the reciprocating screw rod is fixedly connected to the drive end of the motor.

[0011] Further, a crank is rotatably connected to the left end of the front side of the fixed block. The front end of the front drive gear is fixedly connected to the rear end of the crank.

[0012] Further, anti-slip stripes are arranged on the surface of the crank and the bottom side of the clamping plate.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, by shaking the crank, the crank drives the first threaded rod to rotate. The rotation of the first threaded rod drives the drive gear to rotate. The rotation of the drive gear drives the large gear to rotate. The rotation of the large gear drives the transmission rod and the transmission gears to rotate. The reverse gear rotates with the transmission gear to drive the drive gear to rotate, driving the rear drive gear to rotate and driving the rear first threaded rod to rotate. The rotation of the two first threaded rods drives the clamping plates to slide. Place the workpiece on the clamping plates, rotate the adjusting knob to drive the second threaded rod to rotate, and the rotation of the second threaded rod drives the clamping plates to displace to clamp the workpiece. If the thickness of the workpiece changes or the length of the workpiece changes, it can also be clamped.

[0015] 2. In the present utility model, the reciprocating screw is rotated by the motor. The rotation of the reciprocating screw drives the reciprocating slider to move reciprocally on the chute. The fixed block moves reciprocally together with the reciprocating slider. When the reciprocating slider drives the sliding top block and the slider to move to the position of the actuating switch, the sliding top block presses against the actuating switch, causing the actuating switch to press against the self - reset button switch to start the upper electric welder to process the workpiece. At the same time, the slider slides along with the reciprocating slider, and the top of the slider slides under the bottom of the sliding top block. When the reciprocating slider slides towards the motor direction, the slider drives the sliding top block to no longer press against the actuating switch, and the electric welder is turned off. When the reciprocating slider slides to the rightmost end of the chute and the sliding top block abuts against the chute, the slider makes the slider slide to the rightmost side under the bottom of the sliding top block. Thus, it replaces the way of manual feeding, which has poor positioning accuracy, high labor intensity and is prone to danger. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a perspective view of an automatic feeding mechanism for a spot welder proposed by the present utility model;

[0017] Figure 2 is a schematic diagram of the self - reset button switch of an automatic feeding mechanism for a spot welder proposed by the present utility model;

[0018] Figure 3 is a schematic diagram of the slider of an automatic feeding mechanism for a spot welder proposed by the present utility model;

[0019] Figure 4 is a schematic diagram of the transmission component of an automatic feeding mechanism for a spot welder proposed by the present utility model;

[0020] Figure 5 is a schematic diagram of the second threaded rod of an automatic feeding mechanism for a spot welder proposed by the present utility model.

[0021] LEGEND DESCRIPTION:

[0022] 1. Support plate; 2. Upper electric welder; 3. Lower spot welder; 4. Adjusting knob; 5. Motor; 6. Crank; 7. Fixed block; 8. Reciprocating screw; 9. Reciprocating slider; 10. Sliding top block; 11. Actuating switch; 12. Self - reset button switch; 13. Slider; 14. First threaded rod; 15. Driving gear; 16. Transmission rod; 17. Large gear; 18. Transmission gear; 19. Reverse gear; 20. Clamping block; 21. Clamping plate; 22. Second threaded rod. DETAILED IMPLEMENTATION MANNER

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Referring to Figure 1 、 Figure 2 and Figure 4 ,a kind of embodiment provided by the present utility model: an automatic feeding mechanism for a spot welder, including a support plate 1. A welding machine 2 is fixedly connected to the rear side of the top of the support plate 1 to support the welding machine 2 and the lower welding machine 3. Two sliding grooves are opened at the top of the support plate 1. A fixed block 7 is slidably connected to the top of the sliding grooves. A reciprocating screw rod 8 is rotatably connected to the inner wall of the rear sliding groove. A reciprocating slider 9 is arranged on the outer wall of the reciprocating screw rod 8, which can drive the workpiece to perform reciprocating motion on the device to realize automatic feeding. The rear side of the reciprocating slider 9 is connected to the bottom of the welding machine 2 through a switch assembly. The welding machine 2 starts to work only when the workpiece moves to the position of the welding machine 2, saving energy. The top of the reciprocating slider 9 is fixedly connected to the bottom of the fixed block 7, which can drive the workpiece to perform reciprocating motion on the device to realize automatic feeding. Two adjusting grooves are opened at the rear side of the top of the fixed block 7. Clamping blocks 20 are slidably connected to the inner walls of the two adjusting grooves. Fixing components are arranged on the tops of the clamping blocks 20 to fix the workpiece and can also clamp it if the thickness of the workpiece changes. First threaded rods 14 are rotatably connected to the inner walls of the two adjusting grooves. The outer walls of the first threaded rods 14 are threadedly connected to the clamping blocks 20. Driving gears 15 are fixedly connected to the adjacent sides of the two first threaded rods 14. The outer walls of the two driving gears 15 are connected through a transmission component to adjust the distance between the two clamping plates 21 according to the length of the workpiece to clamp the workpiece. A lower spot welder 3 is fixedly connected to the rear side of the bottom of the support plate 1. A motor 5 is fixedly connected to the rear end of the right side of the support plate 1. The right end of the reciprocating screw rod 8 is fixedly connected to the driving end of the motor 5 to fix the reciprocating screw rod 8 to work and drive the workpiece to perform reciprocating motion on the device to realize automatic feeding. A rocking handle 6 is rotatably connected to the left end of the front side of the fixed block 7. The front end of the front driving gear 15 is fixedly connected to the rear end of the rocking handle 6 to drive the rocking handle 3 to rotate to adjust the distance between the two clamping plates 21 to clamp the workpiece. Anti-slip stripes are arranged on the surface of the rocking handle 6 and the bottom side of the clamping plate 21 to increase the friction force, making the rocking handle 6 easier to grip and better clamping the workpiece.

[0025] Referring to Figure 2 and Figure 3, the switch assembly includes a slider 13 fixedly connected to the rear side of the reciprocating slider 9. A sliding top block 10 is slidably connected to the top of the slider 13. A switch groove is formed at the bottom of the support plate 1. A self - reset push - button switch 12 is provided on the inner wall of the switch groove. The contact base of the self - reset push - button switch 12 is connected to the power cord of the upper electric welding machine 2. A push - button switch 11 is slidably connected to the inner wall of the switch groove. The top of the push - button switch 11 abuts against the self - reset push - button switch 12. The left side of the sliding top block 10 abuts against the right - hand bottom side of the self - reset push - button switch 12. The motor 5 drives the reciprocating screw rod 8 to rotate. The rotation of the reciprocating screw rod 8 drives the reciprocating slider 9 to move reciprocally on the chute. The fixed block 7 moves reciprocally with the reciprocating slider 9. When the reciprocating slider 9 drives the sliding top block 10 and the slider 13 to move to the position of the push - button switch 11, the sliding top block 10 presses against the push - button switch 11, causing the push - button switch 11 to press against the self - reset push - button switch 12 to start the upper electric welding machine 2 to process the workpiece. At the same time, the slider 13 slides with the reciprocating slider 9, and the top of the slider 13 slides under the bottom of the sliding top block 10. When the reciprocating slider 9 slides towards the motor 5, the slider 13 slides with the reciprocating slider 9, driving the sliding top block 10 to no longer press against the push - button switch 11, and the upper electric welding machine 2 is turned off. When the reciprocating slider 9 slides to the right - hand end of the chute and the sliding top block 10 abuts against the chute, the slider 13 slides to the right - hand bottom side of the bottom of the sliding top block 10;

[0026] Refer to Figure 5 , the fixing assembly includes two fixing grooves formed on the adjacent sides of the two clamping blocks 20. Clamping plates 21 are slidably connected to the inner walls of the fixing grooves. Second threaded rods 22 are rotatably connected to the inner walls of the fixing grooves. The outer walls of the second threaded rods 22 are threadedly connected to the separated sides of the two clamping plates 21. Adjusting knobs 4 are rotatably connected to the tops of the separated sides of the two clamping blocks 20. The bottom ends of the adjusting knobs 4 are fixedly connected to the top ends of the second threaded rods 22. Place the workpiece on the clamping plate 21, rotate the adjusting knob 4 to drive the second threaded rod 22 to rotate, and the rotation of the second threaded rod 22 drives the clamping plate 21 to displace to clamp the workpiece;

[0027] Refer to Figure 4, the transmission assembly includes a reverse gear 19 meshed and connected to the left side of the outer wall of the rear drive gear slider 13. Three transmission gears 18 are meshed and connected to the left side of the outer wall of the reverse gear 19. A transmission rod 16 is fixedly connected to the middle of the left transmission gear 18. The transmission rod 16 is rotatably connected to the inner wall of the support plate 1. A large gear 17 is fixedly connected to the front end of the transmission rod 16. The outer wall of the right drive gear 15 is meshed and connected to the outer wall of the large gear 17 on the right. Shake the crank 6, the crank 6 drives the first threaded rod 14 to rotate. The rotation of the first threaded rod 14 drives the drive gear 15 to rotate. The rotation of the drive gear 15 drives the large gear 17 to rotate. The rotation of the large gear 17 drives the transmission rod 16 and the transmission gears 18 to rotate. The reverse gear 19 rotates with the transmission gears 18 to drive the drive gear 15 to rotate, driving the rear drive gear 15 to rotate and driving the rear first threaded rod 14 to rotate. The rotation of the two first threaded rods 14 drives the clamping plate 21 to slide and adjust the distance between the two clamping plates 21 according to the length of the workpiece.

[0028] Working principle: First, shake the crank 6. The crank 6 drives the first threaded rod 14 to rotate. The rotation of the first threaded rod 14 drives the drive gear 15 to rotate. The rotation of the drive gear 15 drives the large gear 17 to rotate. The rotation of the large gear 17 drives the transmission rod 16 and the transmission gears 18 to rotate. The reverse gear 19 rotates with the transmission gears 18 to drive the drive gear 15 to rotate, driving the rear drive gear 15 to rotate and driving the rear first threaded rod 14 to rotate. The rotation of the two first threaded rods 14 drives the clamping plate 21 to slide and adjust the distance between the two clamping plates 21 according to the length of the workpiece. Place the workpiece on the clamping plate 21, rotate the adjusting knob 4 to drive the second threaded rod 22 to rotate. The rotation of the second threaded rod 22 drives the clamping plate 21 to displace and clamp the workpiece. Start the motor 5. The motor 5 drives the reciprocating screw rod 8 to rotate. The rotation of the reciprocating screw rod 8 drives the reciprocating slider 9 to reciprocate on the chute. The fixed block 7 reciprocates with the reciprocating slider 9. When the reciprocating slider 9 drives the sliding top block 10 and the slider 13 to move to the top switch 11, the sliding top block 10 presses against the top switch 11, causing the top switch 11 to press against the self-resetting push-button switch 12 to start the upper electric welding machine 2 to process the workpiece. At the same time, the slider 13 slides with the reciprocating slider 9. The top of the slider 13 slides under the bottom of the sliding top block 10. When the reciprocating slider 9 slides towards the motor 5, the slider 13 slides with the reciprocating slider 9 to drive the sliding top block 10 to no longer press against the top switch 11 and the upper electric welding machine 2 is turned off. When the reciprocating slider 9 slides to the rightmost end of the chute and the sliding top block 10 abuts against the chute, the slider 13 causes the slider 13 to slide to the rightmost bottom of the sliding top block 10.

[0029] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An automatic feeding mechanism for a spot welding machine, comprising a support plate (1), characterized in that: The upper electric welding machine (2) is fixedly connected to the rear side of the top of the support plate (1), two slide grooves are provided on the top of the support plate (1), a fixed block (7) is slidably connected to the top of the slide groove, a reciprocating screw (8) is rotatably connected to the inner wall of the slide groove at the rear side, a reciprocating slider (9) is provided on the outer wall of the reciprocating screw (8), the rear side of the reciprocating slider (9) is connected to the bottom of the upper electric welding machine (2) through a switch assembly, the top of the reciprocating slider (9) is fixedly connected to the bottom of the fixed block (7), and two adjustment knobs are provided on the rear side of the top of the fixed block (7). The inner walls of the two adjustment grooves are slidably connected with a clamping block (20), the top of the clamping block (20) is provided with a fixing assembly, the inner walls of the two adjustment grooves are rotatably connected with a first threaded rod (14), the outer walls of the first threaded rod (14) are threadedly connected with the clamping block (20), the adjacent sides of the two first threaded rods (14) are fixedly connected with a driving gear (15), the outer walls of the two driving gears (15) are connected through a transmission assembly, and the rear side of the bottom of the support plate (1) is fixedly connected with a lower spot welder (3).

2. The automatic feeding mechanism of a spot welding machine according to claim 1, characterized in that: The switch assembly comprises a slider (13) fixedly connected to the rear side of the reciprocating slider (9), the top of the slider (13) is slidably connected to a sliding top block (10), the bottom of the support plate (1) is provided with a switch slot, the inner wall of the switch slot is provided with a self-resetting button switch (12), the contact base of the self-resetting button switch (12) is connected to the power line of the upper welding machine (2), the inner wall of the switch slot is slidably connected to a top switch (11), the top of the top switch (11) abuts against the self-resetting button switch (12), and the left side of the sliding top block (10) abuts against the right side of the bottom of the self-resetting button switch (12).

3. The automatic feeding mechanism of a spot welding machine according to claim 1, characterized in that: The fixing assembly comprises two fixing grooves provided on the side close to the two clamping blocks (20), the inner walls of the fixing grooves are slidably connected with clamping plates (21), the inner walls of the fixing grooves are rotatably connected with second threaded rods (22), the outer walls of the second threaded rods (22) are threadedly connected with the sides away from the two clamping plates (21), the tops of the sides away from the two clamping blocks (20) are rotatably connected with adjusting knobs (4), and the bottom ends of the adjusting knobs (4) are fixedly connected with the top ends of the second threaded rods (22).

4. The automatic feeding mechanism of a spot welding machine according to claim 1, characterized in that: The transmission assembly comprises a reverse gear (19) meshedly connected to the left side of the outer wall of the rear driving gear slider (13); the left side of the outer wall of the reverse gear (19) is meshedly connected to three transmission gears (18); the middle of the left transmission gear (18) is fixedly connected to a transmission rod (16); the transmission rod (16) is rotatably connected to the inner wall of the support plate (1); the front end of the transmission rod (16) is fixedly connected to a large gear (17); the outer wall of the right driving gear (15) is meshedly connected to the outer wall of the right large gear (17).

5. The automatic feeding mechanism of a spot welding machine according to claim 1, characterized in that: The rear end of the right side of the support plate (1) is fixedly connected to a motor (5), and the right end of the reciprocating screw (8) is fixedly connected to the driving end of the motor (5).

6. The automatic feeding mechanism of a spot welding machine according to claim 1, characterized in that: The left end of the front side of the fixed block (7) is rotatably connected to the crank (6), and the front end of the driving gear (15) on the front side is fixedly connected to the rear end of the crank (6).

7. The automatic feeding mechanism of a spot welding machine according to claim 6, characterized in that: The surface of the crank (6) and the bottom side of the clamping plate (21) are both provided with anti-slip stripes.

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