Automatic precise spot welding machine

Abstract

The utility model relates to the technical field of spot welding machines, in particular to an automatic precise spot welding machine which mainly comprises a rack, a moving device is fixedly installed on the top face of the rack, a fixing device is fixedly installed on the moving device, a spot welding device and a limiting mechanism are fixedly installed on the front side face of the rack, and a blow-off mechanism is arranged on the rear side of the fixing device. The limiting mechanism is arranged on one side of the limiting mechanism. When a rotating shaft drives an abutting block to rotate, the abutting block moves to a wedge-shaped plate to extrude the wedge-shaped plate, the wedge-shaped plate moves to drive a movable rod and a piston plate to move, the piston plate pushes gas in a fixing box to be conveyed to a spray head through a gas outlet pipe, and the gas is sprayed out of the spray head to blow away welding scraps. The welding slag is guaranteed not to remain on the follow-up to-be-welded position of the machined part easily, the welding slag is not mixed in a welding seam easily, the situation of insufficient welding or breakpoint in welding is guaranteed not to occur easily, the strength and the stability of a welding structure are improved, and the safety of the machined part is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of spot welding machines, in particular to an automatic precision spot welding machine. Background Art

[0002] Automatic precision spot welding machine is an advanced welding equipment, also known as AC pulse spot welding machine. It is an automated equipment that can achieve precision welding. Its welding point is usually less than 1 square millimeter, hence the name precision welding. It is widely used in many fields, such as automotive electronics, inductors, resistors, relays, capacitors, electric light sources, sensors, thermostats, filters, auto parts, precision hardware, small appliances, LEDs, batteries, etc.

[0003] China Patent Publication No. CN 221582586U discloses a precision automatic spot welding machine. The device cooperates with a horizontal plate, a movable plate, a mounting plate, a telescopic rod, a first clamping plate, a second clamping plate and a button, so that the first clamping plate and the second clamping plate can clamp the workpiece. The telescopic rod automatically stops after the workpiece is clamped in place under the cooperation of the button and the telescopic rod, avoiding excessive or insufficient clamping. When clamping the workpiece, the movable plate can be pulled out of the device to avoid inconvenient operation due to the narrow interior during operation, making the workpiece clamping process more convenient.

[0004] After the device performs the welding operation, a large amount of welding slag will be left on the surface of the workpiece. If the welding slag is not cleaned in time, as the device continues to operate and the welding process continues, it will gradually drift and scatter to the subsequent welding position due to the vibration generated by welding. The welding slag may be mixed in the weld, resulting in loose welding, or even cold welding or breakpoints. This not only weakens the strength and stability of the welded structure, but may also cause the structure to break when bearing loads, posing a serious safety hazard.

[0005] Therefore, an automatic precision spot welding machine is proposed. Utility Model Content

[0006] The purpose of the present invention is to provide an automatic precision spot welding machine to solve the problems raised by the above background technology.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] An automatic precision spot welding machine comprises: a frame, a moving device is fixedly mounted on the top surface of the frame, a fixing device is fixedly mounted on the moving device, and a spot welding device is fixedly mounted on the front side of the frame;

[0009] A limiting mechanism is provided at the rear side of the fixing device, the limiting mechanism comprising a fixing plate fixedly mounted on the top surface of the frame, a rotating shaft is provided on the front side of the fixing plate, and a limiting rotating wheel is fixedly mounted on the outer wall of the rotating shaft for limiting the fixing device to ensure more stable movement of the fixing device;

[0010] The blowing mechanism is arranged on one side of the limiting mechanism. The blowing mechanism includes a fixed box arranged above the fixed plate. An air outlet pipe is fixedly installed on the top surface of the fixed box. A nozzle is fixedly installed on the other end of the air outlet pipe for blowing off the welding slag.

[0011] Preferably, a limit strip is fixedly mounted on the side surface of the fixed plate, a movable plate is slidably mounted on the outer wall of the limit strip, and a support plate is fixedly mounted on the side surface of the movable plate.

[0012] Preferably, two adjusting rods are fixedly installed on the other side of the movable plate, and the other end of the adjusting rod slides through the side of the fixed plate and extends to the other side of the fixed plate. The outer walls of the two adjusting rods are movably sleeved with springs one, and the two ends of the two springs one are fixedly connected to the side of the fixed plate and the side of the movable plate respectively.

[0013] Preferably, a support plate is fixedly installed on the side of the movable plate, the lower end of the rotating shaft is rotatably connected to the top surface of the support plate through a bearing seat, and the inner wall of the limiting wheel is slidably connected to the side of the fixing device.

[0014] Preferably, the bottom surface of the fixing box is fixedly connected to the top surface of the support plate, a fixing sleeve is fixedly installed on the outer wall of the air outlet pipe, and the outer wall of the fixing sleeve is fixedly connected to the inner wall of the frame through a fixing rod.

[0015] Preferably, an air inlet pipe is fixedly installed on the top surface of the fixed box, and a one-way valve 1 and a one-way valve 2 are fixedly installed on the air inlet pipe and the air outlet pipe respectively.

[0016] Preferably, a piston plate is slidably mounted on the inner wall of the fixed box, and the side surface of the piston plate is elastically connected to the inner wall of the fixed box through spring 2. A movable rod is fixedly mounted on the side surface of the piston plate, and the other end of the movable rod slides through the interior of the fixed box and extends to the outside of the fixed box. A wedge plate is fixedly mounted on one end of the movable rod, and a stop block is fixedly mounted on the outer wall of the rotating shaft, and the outer wall of the stop block is slidably connected to the side surface of the wedge plate.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] The utility model drives the resisting block to rotate by the rotating shaft, and the resisting block moves to the wedge plate to squeeze the wedge plate, and the movement of the wedge plate drives the movable rod and the piston plate to move, and the piston plate pushes the gas in the fixed box to be transported to the nozzle through the outlet pipe, and the gas is ejected from the nozzle to blow away the welding chips, so that the welding slag is not likely to remain at the position of the workpiece to be welded later, and the welding slag is not likely to be mixed in the weld, so that the welding is not likely to have the situation of false welding or breakpoints, which not only improves the strength and stability of the welding structure, but also ensures the safety of the workpiece;

[0019] By setting a pair of springs to apply elastic force to the movable plate, the movable plate is continuously pushed by spring one, and the movable plate pushes the supporting plate to move, and the supporting plate drives the rotating shaft and the limiting wheel to move, and the inner wall of the limiting wheel limits the fixing device. At the same time, under the action of spring one, the limiting wheel is in close contact with the fixing device, ensuring that when the fixing device drives the workpiece to move, it is more stable and less likely to deviate, thereby improving the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0021] Figure 2 This is a schematic cross-sectional view of the three-dimensional structure of the present utility model;

[0022] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the abutment block of the present invention;

[0024] Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the fixing box of the present invention.

[0025] In the picture:

[0026] 1. Frame; 101. Moving device; 102. Fixing device; 103. Spot welding device;

[0027] 2. Limiting mechanism; 201. Fixed plate; 202. Limiting bar; 203. Moving plate; 204. Adjusting rod; 205. Spring 1; 206. Support plate; 207. Rotating shaft; 208. Limiting wheel;

[0028] 3. Blowing mechanism; 301. Fixed box; 302. Air inlet pipe; 303. One-way valve 1; 304. Air outlet pipe; 305. One-way valve 2; 306. Nozzle; 307. Fixed sleeve; 308. Piston plate; 309. Spring 2; 310. Movable rod; 311. Wedge plate; 312. Stop block. DETAILED DESCRIPTION

[0029] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in this application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0030] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0031] like Figure 1-5 As shown, the present application provides an automatic precision spot welding machine, comprising: a frame 1, a moving device 101 fixedly mounted on the top surface of the frame 1, a fixing device 102 fixedly mounted on the moving device 101, and a spot welding device 103 fixedly mounted on the front side of the frame 1;

[0032] The limiting mechanism 2 is provided at the rear side of the fixing device 102. The limiting mechanism 2 includes a fixing plate 201 fixedly mounted on the top surface of the frame 1. A rotating shaft 207 is provided on the front side of the fixing plate 201. A limiting rotating wheel 208 is fixedly mounted on the outer wall of the rotating shaft 207 for limiting the fixing device 102 to ensure more stable movement of the fixing device 102.

[0033] Specifically, such as Figure 1-3 As shown, a limit strip 202 is fixedly mounted on the side of the fixed plate 201 , a movable plate 203 is slidably mounted on the outer wall of the limit strip 202 , and a support plate 206 is fixedly mounted on the side of the movable plate 203 .

[0034] In this embodiment, the position limiting strip 202 is provided to limit the position of the movable plate 203 , so that the movable plate 203 is more stable when moving and is less likely to deviate.

[0035] Specifically, such as Figure 1-3 As shown, two adjusting rods 204 are fixedly installed on the other side of the movable plate 203, and the other end of the adjusting rod 204 slides through the side of the fixed plate 201 and extends to the other side of the fixed plate 201. The outer walls of the two adjusting rods 204 are movably sleeved with springs 205, and the two ends of the two springs 205 are fixedly connected to the side of the fixed plate 201 and the side of the movable plate 203 respectively.

[0036] In this embodiment: through the setting of spring 1 205, spring 1 205 applies elastic force to the side of the movable plate 203, and spring 1 205 makes the movable plate 203 always have a thrust, ensuring that the movable plate 203 can drive the upper limiting wheel 208 to always be in close contact with the fixing device 102, ensuring that the limiting wheel 208 can always stably limit the fixing device 102, and ensuring the stability of the workpiece on the fixing device 102.

[0037] Specifically, such as Figure 1-3 As shown, a support plate 206 is fixedly installed on the side of the movable plate 203, the lower end of the rotating shaft 207 is rotatably connected to the top surface of the support plate 206 through a bearing seat, and the inner wall of the limiting wheel 208 is slidably connected to the side of the fixing device 102.

[0038] In this embodiment, the supporting plate 206 is driven to move by the movable plate 203 , and the supporting plate 206 drives the rotating shaft 207 and the limiting rotating wheel 208 to be in close contact with the fixing device 102 , thereby limiting the fixing device 102 .

[0039] The blowing mechanism 3 is arranged on one side of the limiting mechanism 2. The blowing mechanism 3 includes a fixed box 301 arranged above the fixed plate 201. An air outlet pipe 304 is fixedly installed on the top surface of the fixed box 301. A nozzle 306 is fixedly installed at the other end of the air outlet pipe 304 for blowing off the welding slag.

[0040] Specifically, such as Figure 1-5 As shown, the bottom surface of the fixing box 301 is fixedly connected to the top surface of the support plate 206, and a fixing sleeve 307 is fixedly installed on the outer wall of the air outlet pipe 304. The outer wall of the fixing sleeve 307 is fixedly connected to the inner wall of the frame 1 through a fixing rod.

[0041] In this embodiment, the fixing sleeve 307 is provided to support the air outlet pipe 304, thereby ensuring that the air outlet pipe 304 is not prone to breakage and improving its service life.

[0042] Specifically, such as Figure 1-5 As shown, an air inlet pipe 302 is fixedly installed on the top surface of the fixed box 301, and a one-way valve 1 303 and a one-way valve 2 305 are fixedly installed on the air inlet pipe 302 and the air outlet pipe 304 respectively.

[0043] In this embodiment, the one-way valve 1 303 is provided to ensure that the fixed box 301 can only inhale gas from the air inlet pipe 302, and the one-way valve 2 305 is provided to ensure that the fixed box 301 can only discharge gas from the air outlet pipe 304, thereby ensuring that the nozzle 306 is not easy to inhale welding chips.

[0044] Specifically, such as Figure 1-5As shown, a piston plate 308 is slidably mounted on the inner wall of the fixed box 301, and the side of the piston plate 308 is elastically connected to the inner wall of the fixed box 301 through a second spring 309. A movable rod 310 is fixedly mounted on the side of the piston plate 308, and the other end of the movable rod 310 slides through the interior of the fixed box 301 and extends to the outside of the fixed box 301. A wedge plate 311 is fixedly mounted on one end of the movable rod 310, and a stop block 312 is fixedly mounted on the outer wall of the rotating shaft 207. The outer wall of the stop block 312 is slidably connected to the side of the wedge plate 311.

[0045] In this embodiment, when the wedge plate 311 is moved against the abutment block 312, the wedge plate 311 mobilizes the movable rod 310 and the piston plate 308 to move to push the gas in the fixed box 301, and blows it out from the nozzle 306 through the outlet pipe 304 to blow away the welding chips, ensuring that the welding chips are not likely to affect the subsequent welding position, thereby improving the quality of welding.

[0046] The specific solution is as follows: when the moving device 101 drives the workpiece on the fixing device 102 to move, the fixing device 102 moves and drives the limiting wheel 208 to rotate, and the spring 1 205 applies elastic force to the moving plate 203. The moving plate 203 is continuously pushed by the spring 1 205, and the moving plate 203 pushes the supporting plate 206 to move. The supporting plate 206 drives the rotating shaft 207 and the limiting wheel 208 to move. The inner wall of the limiting wheel 208 limits the fixing device 102. At the same time, under the action of the spring 1 205, the limiting wheel 208 is in close contact with the fixing device 102, ensuring that when the fixing device 102 drives the workpiece to move, it is more stable and not prone to deviation, thereby improving The welding quality is improved. At the same time, the limiting wheel 208 drives the rotating shaft 207 to rotate. When the rotating shaft 207 drives the block 312 to rotate, the block 312 moves to the wedge plate 311 to squeeze the wedge plate 311. The movement of the wedge plate 311 drives the movable rod 310 and the piston plate 308 to move. The piston plate 308 pushes the gas in the fixed box 301 to be transported to the nozzle 306 through the outlet pipe 304. The gas is ejected from the nozzle 306 to blow away the welding chips, ensuring that the welding slag is not easy to remain at the subsequent welding position of the workpiece, and the welding slag is not easy to be mixed in the weld, ensuring that the welding is not easy to have cold welding or breakpoints. This not only improves the strength and stability of the welding structure, but also ensures the safety of the workpiece.

[0047] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative; within the spirit of the present invention, the technical features of the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0048] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An automatic precision spot welding machine, comprising: A frame (1), wherein a moving device (101) is fixedly mounted on the top surface of the frame (1), a fixing device (102) is fixedly mounted on the moving device (101), and a spot welding device (103) is fixedly mounted on the front side of the frame (1), characterized in that: A limiting mechanism (2) is arranged at the rear side of the fixing device (102), the limiting mechanism (2) comprising a fixing plate (201) fixedly mounted on the top surface of the frame (1), a rotating shaft (207) being arranged at the front side of the fixing plate (201), and a limiting rotating wheel (208) being fixedly mounted on the outer wall of the rotating shaft (207) for limiting the fixing device (102) to ensure that the fixing device (102) moves more stably; A blowing mechanism (3) is arranged on one side of the limiting mechanism (2), and the blowing mechanism (3) comprises a fixed box (301) arranged above the fixed plate (201), an air outlet pipe (304) is fixedly installed through the top surface of the fixed box (301), and a nozzle (306) is fixedly installed at the other end of the air outlet pipe (304) for blowing off welding slag.

2. The automatic precision spot welding machine according to claim 1, characterized in that: A limit strip (202) is fixedly mounted on the side of the fixed plate (201), a movable plate (203) is slidably mounted on the outer wall of the limit strip (202), and a support plate (206) is fixedly mounted on the side of the movable plate (203).

3. The automatic precision spot welding machine according to claim 2, characterized in that: Two adjusting rods (204) are fixedly installed on the other side of the movable plate (203), and the other ends of the adjusting rods (204) slide through the side of the fixed plate (201) and extend to the other side of the fixed plate (201). The outer walls of the two adjusting rods (204) are movably sleeved with springs (205), and the two ends of the two springs (205) are fixedly connected to the side of the fixed plate (201) and the side of the movable plate (203) respectively.

4. The automatic precision spot welding machine according to claim 3, characterized in that: A support plate (206) is fixedly mounted on the side of the movable plate (203); the lower end of the rotating shaft (207) is rotatably connected to the top surface of the support plate (206) via a bearing seat; and the inner wall of the limiting rotating wheel (208) is slidably connected to the side of the fixing device (102).

5. The automatic precision spot welding machine according to claim 4, characterized in that: The bottom surface of the fixing box (301) is fixedly connected to the top surface of the support plate (206); a fixing sleeve (307) is fixedly installed on the outer wall of the air outlet pipe (304); and the outer wall of the fixing sleeve (307) is fixedly connected to the inner wall of the frame (1) via a fixing rod.

6. The automatic precision spot welding machine according to claim 1, characterized in that: An air inlet pipe (302) is fixedly installed on the top surface of the fixed box (301), and a one-way valve (303) and a one-way valve (305) are fixedly installed on the air inlet pipe (302) and the air outlet pipe (304), respectively.

7. The automatic precision spot welding machine according to claim 6, characterized in that: A piston plate (308) is slidably mounted on the inner wall of the fixed box (301), and the side of the piston plate (308) is elastically connected to the inner wall of the fixed box (301) through a second spring (309). A movable rod (310) is fixedly mounted on the side of the piston plate (308), and the other end of the movable rod (310) slides through the interior of the fixed box (301) and extends to the outside of the fixed box (301). A wedge plate (311) is fixedly mounted on one end of the movable rod (310), and a stop block (312) is fixedly mounted on the outer wall of the rotating shaft (207), and the outer wall of the stop block (312) is slidably connected to the side of the wedge plate (311).

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