Ultrasonic metal welding machine capable of automatically adjusting position of welding head and adjusting method

Abstract

The invention discloses an ultrasonic metal welding machine capable of automatically adjusting the position of a welding head and an adjusting method.The welding machine comprises a main body unit and an adjusting unit, the main body unit comprises a machining table, a base is fixed to the machining table, a hydraulic cylinder is installed on the base, a movable frame is fixed to the extension end of the hydraulic cylinder, and a controller is installed on one side of the movable frame; a welding head is arranged at the bottom of the controller. The two-dimensional code mainly comprises height information needed by the welding head and width information between the two sliding blocks, when the two-dimensional code is scanned through a code scanning gun, the height information needed by the welding head and the width information between the two sliding blocks can be obtained, and a hydraulic cylinder and a servo motor are started through a controller; the height needed by the welding head and the width between the two sliding blocks can be adjusted only by adjusting the height of the welding head, the mode is very convenient and fast, manual adjustment errors are avoided through automatic adjustment, losses of high-value easily-damaged parts such as the welding head and the bottom felt sliding blocks are reduced, and cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of ultrasonic metal welding machines, and in particular to an ultrasonic metal welding machine capable of automatically adjusting the position of a welding head and an adjustment method. Background Art

[0002] With the development of industrial automation technology, ultrasonic metal welding has been widely used in various fields as an efficient and environmentally friendly welding method. However, since one device often needs to be compatible with welding wire harnesses of different square numbers, the welding head needs to be replaced frequently.

[0003] Affected by the width and height of the welding head, it is necessary to readjust the gap between the welding head and the bottom felt (i.e., the gap between the welding head and the bottom felt when the welding head is lowered to the bottom. If the welding head is pressed down and contacts the bottom felt, the welding head teeth or the bottom felt teeth may be damaged, and the gap needs to be adjusted to about 0.5-2mm), and the gap between the welding head and the left and right sliders (the gap between the welding head and the left and right sliders after the welding head is lowered to the bottom. If the welding head is pressed down and contacts the left and right sliders, it may cause damage to the welding head teeth, sparks, welding head breakage, etc., and in order to prevent flying wires, the width needs to be adjusted between 2-4 wires). The adjustment method of the welding head in the prior art is mainly to adjust the height of the welding head through a floating joint, then adjust the width by tightening the guide screws of the slider, and then manually clamp and fix it with a plug gauge. In addition, the replacement of the welding head also requires the removal of the positioning bolts before replacement. Each changeover takes a long time, which reduces the production efficiency of the production line. Summary of the invention

[0004] In view of this, the purpose of the present invention is to propose an ultrasonic metal welding machine and adjustment method for automatically adjusting the position of the welding head. The technical problem to be solved is that the adjustment method of the welding head in the prior art is mainly to adjust the height of the welding head through a floating joint, and then adjust the width by screwing the guide screws of the slider, and then manually clamp and fix it with a plug gauge. In addition, the replacement of the welding head also requires the removal of the positioning bolts before replacement. The time for each changeover is relatively long, which reduces the production efficiency of the production line.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: A first aspect of the present invention provides an ultrasonic metal welding machine that automatically adjusts the position of a welding head, the welding machine comprising a main unit and an adjustment unit, the main unit comprising a processing table, a base being fixed to the processing table, a hydraulic cylinder being installed on the base, a movable frame being fixed to the extended end of the hydraulic cylinder, a controller being installed on one side of the movable frame, a welding head being arranged at the bottom of the controller, the adjustment unit comprising a welding table, the welding table being fixed to the processing table, and the welding table being located directly below the welding head, two operating tables being fixed to the processing table, the operating tables being symmetrically arranged on both sides of the welding table, a slider being arranged on the operating table, and a control component for controlling the movement of the slider being arranged in the operating table.

[0006] As a further optimization scheme of the present invention, the control component includes a rectangular groove opened on the top of the operating table, a rectangular plate is fixed at the bottom of the slider, the rectangular plate is slidably fitted in the rectangular groove, a screw is rotatably connected in the rectangular groove, the screw passes through the rectangular plate and is threadedly connected to the rectangular plate, servo motors are installed on the sides of the two operating tables away from each other, and one end of the screw extending outside the operating table is fixed to the output end of the servo motor.

[0007] As a further optimization scheme of the present invention, two guide rods are fixed on the base, a top plate is fixed to the top of the two guide rods, guide blocks are fixed on both sides of the movable frame, the guide rods pass through the guide blocks, and the guide blocks are slidably fitted on the outside of the corresponding guide rods.

[0008] As a further optimization scheme of the present invention, a base plate is arranged under the processing table, brackets are fixed at the four corners of the bottom of the processing table, the bottom of the bracket is fixed to the top of the base plate, and legs are fixed at the four corners of the bottom of the base plate. A barcode scanner is connected to the controller through a wire, a storage box is fixed on one side of the mobile frame, the barcode scanner can be placed in the storage box, the output end of the barcode scanner is connected to the input end of the controller, and the output end of the controller is connected to the input end of the hydraulic cylinder and the servo motor.

[0009] As a further optimization scheme of the present invention, a hollow convex plate is fixed at the bottom of the controller, a travel groove is opened in the hollow convex plate, two clamps are slidably connected in the travel groove, two cylindrical rods are fixed in the travel groove, the cylindrical rod passes through the clamp, the clamp is slidably fitted on the outside of the cylindrical rod, two positioning columns are fixed on the side where the two clamps are close to each other, an elastic part is sleeved on the outside of the cylindrical rod, one end of the elastic part is against the clamp, and the other end of the elastic part is against the inner wall of the travel groove.

[0010] As a further optimization solution of the present invention, a connecting head is fixed on the top of the welding head, a QR code is set on one side of the connecting head, two positioning holes are set in the connecting head, and the positioning column can be embedded in the corresponding positioning holes.

[0011] As a further optimization scheme of the present invention, the inner wall at the top of the hollow convex plate is rotatably connected to a rotating shaft, a sliding sleeve is provided on the outer side of the rotating shaft, a first hinge seat is fixed on both sides of the sliding sleeve, a second hinge seat is fixed on the top of the clamping plate, and a rotating rod is rotatably connected between the first hinge seat and the second hinge seat.

[0012] As a further optimization scheme of the present invention, a circular hole is opened in the sliding sleeve, the rotating shaft passes through the circular hole, the sliding sleeve is slidably fitted on the outside of the rotating shaft, a circular baffle is fixed at the bottom of the rotating shaft, and the diameter of the circular baffle is larger than the diameter of the circular hole.

[0013] As a further optimization solution of the present invention, a notch is further provided in the sliding sleeve, and the notch is communicated with the circular hole, and a clamping column is fixed on the outer side of the rotating shaft, and the clamping column can slide in the notch.

[0014] A second aspect of the present invention provides a method for adjusting the position of a welding head of an ultrasonic metal welding machine. The method is used for the above ultrasonic metal welding machine and comprises the following steps: Step 1: When the welding head needs to be replaced, first use a barcode scanner to scan the QR code to obtain the height information required to replace the welding head and the width information between the two sliders; Step 2: The hydraulic cylinder and the servo motor are controlled by the controller. When the servo motor is working, the screw is driven to rotate. When the screw rotates, the rectangular plate and the slider are driven to move, that is, the width between the two sliders is adjusted. After the object to be welded is placed on the welding table, the hydraulic cylinder can control the height of the welding head according to the different heights required by different welding heads when working; Step 3: When replacing the welding head, move the sliding sleeve downward to drive the rotating rod to rotate. When the rotating rod rotates, it drives the clamping plate to move, so that the positioning column is moved out of the positioning hole, and the welding head to be replaced is removed. Then, the rotating shaft is rotated to rotate the clamping column to be misaligned with the notch. At this time, the clamping column presses against the sliding sleeve to prevent the sliding sleeve from moving up, that is, the clamping plate is fixed; Step 4: Place the welding head to be replaced under the hollow convex plate, and then rotate the shaft. When the clamping column rotates to coincide with the notch, the two clamping plates are driven closer to each other under the rebound force of the elastic member. At this time, the clamping column no longer blocks the sliding sleeve, and the sliding sleeve moves up. When the two clamping plates approach each other, the positioning column is embedded in the positioning hole, and the installation of the new welding head is completed.

[0015] The beneficial effects of the present invention are: 1: The QR code mainly includes the height information required by the welding head and the width information between the two sliders. When the QR code is scanned by a barcode scanner, the height information required by the welding head and the width information between the two sliders can be obtained, and the hydraulic cylinder and servo motor can be started by the controller to adjust the required height of the welding head and the width between the two sliders. This method is very convenient, and through automatic adjustment, it avoids manual adjustment errors, reduces the loss of high-value consumables such as welding heads and bottom felt sliders, and reduces costs.

[0016] 2: When replacing the welding head, move the sliding sleeve downward to drive the rotating rod to rotate. When the rotating rod rotates, it drives the clamping plate to move, so that the positioning column is moved out of the positioning hole, and the welding head to be replaced is removed. Then, the rotating shaft is rotated to rotate the clamping column until it is misaligned with the notch. At this time, the clamping column will resist the sliding sleeve to prevent the sliding sleeve from moving up, and the welding head to be replaced is placed under the hollow convex plate. Then, the rotating shaft is rotated to rotate the clamping column until it coincides with the notch. At this time, the two clamping plates are driven close to each other under the rebound force of the elastic part, so that the positioning column is embedded in the positioning hole, and the installation of the new welding head is completed. This method of installing and disassembling the welding head is very convenient and fast, which improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic structural diagram of an ultrasonic metal welding machine capable of automatically adjusting the position of a welding head provided by the present invention; Figure 2 A schematic structural diagram of another perspective of an ultrasonic metal welding machine capable of automatically adjusting the position of a welding head provided by the present invention; Figure 3 An enlarged schematic diagram of a control assembly provided by the present invention; Figure 4 A schematic diagram of the split structure of the hollow convex plate and the welding head provided by the present invention; Figure 5 Another perspective structural schematic diagram of the hollow convex plate provided by the present invention; Figure 6 This is a schematic diagram of the disassembled structure of the rotating shaft and the sliding sleeve provided by the present invention.

[0018] Description of the drawings: 100, main unit; 101, processing table; 102, base; 103, hydraulic cylinder; 104, mobile frame; 105, controller; 106, welding head; 107, bracket; 108, bottom plate; 110, support foot; 111, guide block; 112, guide rod; 113, top plate; 114, positioning hole; 115, QR code; 116, connector; 117, barcode scanner; 118, storage box; 200, adjustment unit; 201, welding table; 202, operating table ; 203, slider; 204, control assembly; 205, rectangular groove; 206, rectangular plate; 207, screw; 208, servo motor; 209, hollow convex plate; 210, travel groove; 211, clamp; 212, positioning column; 213, cylindrical rod; 214, elastic member; 215, rotating shaft; 216, sliding sleeve; 217, first hinge seat; 218, second hinge seat; 219, rotating rod; 220, circular baffle; 221, notch; 222, clamping column; 223, round hole. DETAILED DESCRIPTION

[0019] The present application is further described in detail below in conjunction with the accompanying drawings. It is necessary to point out here that the following specific implementation methods are only used to further illustrate the present application and cannot be understood as limiting the scope of protection of the present application. Technical personnel in this field can make some non-essential improvements and adjustments to the present application based on the above application content.

[0020] Example 1 refer to Figure 1 The structure shown provides an ultrasonic metal welding machine for automatically adjusting the position of a welding head, the ultrasonic metal welding machine comprises a main unit 100 and an adjustment unit 200, the main unit 100 comprises a processing table 101, a base 102 is fixed on the processing table 101, a hydraulic cylinder 103 is installed on the base 102, a movable frame 104 is fixed to the extended end of the hydraulic cylinder 103, a controller 105 is installed on one side of the movable frame 104, a welding head 106 is arranged at the bottom of the controller 105, the adjustment unit 200 comprises a welding table 201, the welding table 201 is fixed on the processing table 101, and the welding table 201 is located directly below the welding head 106, two operating tables 202 are also fixed on the processing table 101, the operating tables 202 are symmetrically arranged on both sides of the welding table 201, a slider 203 is arranged on the operating table 202, and a control component 204 for controlling the movement of the slider 203 is arranged in the operating table 202.

[0021] Mate Reference Figures 2 to 4The structure shown in, wherein the control component 204 includes a rectangular groove 205 opened at the top of the operating table 202, a rectangular plate 206 is fixed at the bottom of the slider 203, the rectangular plate 206 is slidably fitted in the rectangular groove 205, a screw 207 is rotatably connected in the rectangular groove 205, the screw 207 penetrates the rectangular plate 206 and is threadedly connected to the rectangular plate 206, a servo motor 208 is installed on the side of the two operating tables 202 away from each other, the screw 207 extends to one end outside the operating table 202 and is fixed to the output end of the servo motor 208, two guide rods 112 are fixed on the base 102, and a top plate 113 is fixed on the top of the two guide rods 112, and guide blocks 111 are fixed on both sides of the movable frame 104, the guide rods 112 penetrate the guide blocks 111, and the guide blocks 111 are slidably fitted on the outside of the corresponding guide rods 112.

[0022] It should be noted that due to the setting of the guide block 111 and the guide rod 112, when the hydraulic cylinder 103 works to drive the controller 105 and the welding head 106 to rise and fall, the welding head 106 is ensured to move up and down stably, so that the welding head 106 is always located directly above the welding table 201.

[0023] Furthermore, a base plate 108 is provided under the processing table 101, and brackets 107 are fixed at the four corners of the bottom of the processing table 101. The bottom of the bracket 107 is fixed to the top of the base plate 108, and legs 110 are fixed to the four corners of the bottom of the base plate 108. A barcode scanner 117 is connected to the controller 105 through a wire, and a storage box 118 is fixed to one side of the movable frame 104. The barcode scanner 117 can be placed in the storage box 118, and the output end of the barcode scanner 117 is connected to the input end of the controller 105, and the output end of the controller 105 is connected to the input end of the hydraulic cylinder 103 and the servo motor 208.

[0024] It should be noted that the hydraulic cylinder 103, controller 105, barcode scanner 117 and servo motor 208 in this embodiment are all conventional equipment purchased on the market and known to those skilled in the art. The models can be selected or customized according to actual needs. In this patent, we only use them and do not improve their structure and function. For those skilled in the art, their setting method, installation method and electrical connection method only need to be debugged according to the requirements of the instruction manual, and will not be described in detail here.

[0025] Example 2 References Figures 4 to 6The structure shown is an ultrasonic metal welding machine that automatically adjusts the position of the welding head. On the basis of the first embodiment, a hollow convex plate 209 is fixed to the bottom of the controller 105, and a travel groove 210 is opened in the hollow convex plate 209. Two clamps 211 are slidably connected in the travel groove 210. Two cylindrical rods 213 are fixed in the travel groove 210. The cylindrical rod 213 passes through the clamps 211. The clamps 211 are slidably fitted on the outside of the cylindrical rods 213. Two positioning columns 212 are fixed on the side where the two clamps 211 are close to each other. An elastic member 214 is sleeved on the outside of the cylindrical rod 213. One end of the elastic member 214 is against the clamp 211, and the other end of the elastic member 214 is against the inner wall of the travel groove 210.

[0026] It should be noted that in the normal state of the elastic member 214, the sides of the two clamping plates 211 close to each other are both in contact with the outer side of the connecting head 116. At this time, the positioning column 212 is embedded in the positioning hole 114, that is, the connecting head 116 and the hollow convex plate 209 are fixed.

[0027] In addition, a connecting head 116 is fixed on the top of the welding head 106, a QR code 115 is set on one side of the connecting head 116, two positioning holes 114 are opened in the connecting head 116, and the positioning column 212 can be embedded in the corresponding positioning hole 114, and a rotating shaft 215 is rotatably connected to the inner wall of the top of the hollow convex plate 209, and a sliding sleeve 216 is set on the outer side of the rotating shaft 215, and a first hinge seat 217 is fixed on both sides of the sliding sleeve 216, and a second hinge seat 218 is fixed on the top of the clamping plate 211, and a rotating rod 219 is rotatably connected between the first hinge seat 217 and the second hinge seat 218, and a circular hole 223 is opened in the sliding sleeve 216, and the rotating shaft 215 passes through the circular hole 223, and the sliding sleeve 216 is slidably matched with the outer side of the rotating shaft 215, and a circular baffle 220 is fixed to the bottom of the rotating shaft 215, and the diameter of the circular baffle 220 is larger than the diameter of the circular hole 223.

[0028] It should be noted that the information of the QR code 115 on the connecting head 116 at the top of different welding heads 106 is different. The QR code 115 mainly includes the height information required by the welding head 106 and the width information between the two sliders 203. When the QR code 115 is scanned by the barcode scanner 117, the height information required by the welding head 106 and the width information between the two sliders 203 can be obtained, and the hydraulic cylinder 103 and the servo motor 208 can be started by the controller 105 to adjust the required height of the welding head 106 and the width between the two sliders 203. This method is very convenient.

[0029] Furthermore, a notch 221 is provided in the sliding sleeve 216, and the notch 221 is connected to the circular hole 223. A clamping column 222 is fixed to the outside of the rotating shaft 215, and the clamping column 222 can slide in the notch 221. Since the diameter of the circular baffle 220 is larger than the diameter of the circular hole 223, the sliding sleeve 216 is prevented from slipping off the rotating shaft 215 when the sliding sleeve 216 is moved.

[0030] Example 3 like Figures 1 to 6 As shown, a method for adjusting the position of the welding head of an ultrasonic metal welding machine, based on the first and second embodiments, comprises the following steps: Step 1: When the welding head 106 needs to be replaced, first use the barcode scanner 117 to scan the QR code 115 to obtain the height information required for replacing the welding head 106 and the width information between the two sliders 203; Step 2: The hydraulic cylinder 103 and the servo motor 208 are controlled by the controller 105 to work. When the servo motor 208 is working, it drives the screw 207 to rotate. When the screw 207 rotates, it drives the rectangular plate 206 and the slider 203 to move, that is, the width between the two sliders 203 is adjusted. After the object to be welded is placed on the welding table 201, the hydraulic cylinder 103 can control the height of the welding head 106 according to the different heights required by different welding heads 106 when working; Step 3: When the welding head 106 is to be replaced, the sliding sleeve 216 is moved downward to drive the rotating rod 219 to rotate. When the rotating rod 219 rotates, the clamping plate 211 is moved, so that the positioning column 212 is moved out of the positioning hole 114, and the welding head 106 to be replaced is removed. Then, the rotating shaft 215 is rotated to rotate the clamping column 222 to be misaligned with the notch 221. At this time, the clamping column 222 abuts against the sliding sleeve 216 to prevent the sliding sleeve 216 from moving upward, that is, the clamping plate 211 is fixed; Step 4: Place the welding head 106 to be replaced under the hollow convex plate 209, and then rotate the rotating shaft 215. When the clamping column 222 rotates to coincide with the notch 221, the two clamping plates 211 are driven closer to each other under the rebound force of the elastic member 214. At this time, the clamping column 222 no longer blocks the sliding sleeve 216, and the sliding sleeve 216 moves up. When the two clamping plates 211 approach each other, the positioning column 212 is embedded in the positioning hole 114, and the installation of the new welding head 106 is completed.

[0031] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. An ultrasonic metal welding machine capable of automatically adjusting the position of a welding head, the welding machine comprising a main unit (100) and an adjustment unit (200), characterized in that: The main unit (100) comprises a processing table (101), a base (102) is fixed on the processing table (101), a hydraulic cylinder (103) is installed on the base (102), a moving frame (104) is fixed on the extended end of the hydraulic cylinder (103), a controller (105) is installed on one side of the moving frame (104), a welding head (106) is arranged at the bottom of the controller (105), and the adjustment unit (200) comprises a welding table (201), the welding table (201) is fixed on the processing table (101), and the welding table (201) is located directly below the welding head (106), and two operating tables (202) are also fixed on the processing table (101), the operating tables (202) are symmetrically arranged on both sides of the welding table (201), a slider (203) is arranged on the operating table (202), and a control component (204) for controlling the movement of the slider (203) is arranged in the operating table (202).

2. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 1, characterized in that: The control component (204) comprises a rectangular groove (205) opened at the top of the operating table (202); a rectangular plate (206) is fixed at the bottom of the slider (203); the rectangular plate (206) is slidably fitted in the rectangular groove (205); a screw rod (207) is rotatably connected in the rectangular groove (205); the screw rod (207) passes through the rectangular plate (206) and is threadedly connected to the rectangular plate (206); a servo motor (208) is installed on the side of the two operating tables (202) that are away from each other; one end of the screw rod (207) extending outside the operating table (202) is fixed to the output end of the servo motor (208).

3. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 1, characterized in that: Two guide rods (112) are fixed on the base (102), a top plate (113) is fixed to the tops of the two guide rods (112), guide blocks (111) are fixed to both sides of the movable frame (104), the guide rods (112) pass through the guide blocks (111), and the guide blocks (111) are slidably fitted on the outside of the corresponding guide rods (112).

4. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 2, characterized in that: A bottom plate (108) is arranged below the processing table (101); brackets (107) are fixed at the four corners of the bottom of the processing table (101); the bottom of the bracket (107) is fixed to the top of the bottom plate (108); legs (110) are fixed at the four corners of the bottom of the bottom plate (108); a barcode scanner (117) is connected to the controller (105) via a wire; a storage box (118) is fixed to one side of the mobile frame (104); the barcode scanner (117) can be placed in the storage box (118); an output end of the barcode scanner (117) is connected to an input end of the controller (105); and the output end of the controller (105) is connected to an input end of a hydraulic cylinder (103) and a servo motor (208).

5. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 1, characterized in that: A hollow convex plate (209) is fixed at the bottom of the controller (105), a travel groove (210) is provided in the hollow convex plate (209), two clamping plates (211) are slidably connected in the travel groove (210), two cylindrical rods (213) are fixed in the travel groove (210), the cylindrical rods (213) pass through the clamping plates (211), the clamping plates (211) are slidably fitted outside the cylindrical rods (213), two positioning columns (212) are fixed on the sides of the two clamping plates (211) close to each other, an elastic member (214) is sleeved on the outside of the cylindrical rod (213), one end of the elastic member (214) is against the clamping plate (211), and the other end of the elastic member (214) is against the inner wall of the travel groove (210).

6. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 5, characterized in that: A connecting head (116) is fixed on the top of the welding head (106), a two-dimensional code (115) is provided on one side of the connecting head (116), two positioning holes (114) are provided in the connecting head (116), and the positioning column (212) can be embedded in the corresponding positioning holes (114).

7. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 6, characterized in that: A rotating shaft (215) is rotatably connected to the inner wall of the top of the hollow convex plate (209), a sliding sleeve (216) is arranged on the outside of the rotating shaft (215), first hinge seats (217) are fixed on both sides of the sliding sleeve (216), a second hinge seat (218) is fixed on the top of the clamping plate (211), and a rotating rod (219) is rotatably connected between the first hinge seat (217) and the second hinge seat (218).

8. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 7, characterized in that: A circular hole (223) is formed in the sliding sleeve (216), the rotating shaft (215) passes through the circular hole (223), the sliding sleeve (216) is slidably fitted on the outside of the rotating shaft (215), and a circular baffle (220) is fixed to the bottom of the rotating shaft (215), the diameter of the circular baffle (220) being greater than the diameter of the circular hole (223).

9. The ultrasonic metal welding machine with automatic adjustment of welding head position according to claim 8, characterized in that: A notch (221) is also provided in the sliding sleeve (216), and the notch (221) is communicated with the circular hole (223). A clamping column (222) is fixed on the outside of the rotating shaft (215), and the clamping column (222) can slide in the notch (221).

10. A method for adjusting the position of a welding head of an ultrasonic metal welding machine, comprising the ultrasonic metal welding machine according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: When the welding head (106) needs to be replaced, first use a barcode scanner (117) to scan the QR code (115) to obtain the height information required for replacing the welding head (106) and the width information between the two sliders (203); Step 2: The hydraulic cylinder (103) and the servo motor (208) are controlled by the controller (105) to work. When the servo motor (208) is working, it drives the screw rod (207) to rotate. When the screw rod (207) rotates, it drives the rectangular plate (206) and the slider (203) to move, that is, the width between the two sliders (203) is adjusted. After the object to be welded is placed on the welding table (201), the hydraulic cylinder (103) can control the height of the welding head (106) when working according to the different heights required by different welding heads (106); Step 3: When replacing the welding head (106), the sliding sleeve (216) is moved downward to drive the rotating rod (219) to rotate. When the rotating rod (219) rotates, it drives the clamping plate (211) to move, so that the positioning column (212) is moved out of the positioning hole (114), and the welding head (106) to be replaced is removed. Then, the rotating shaft (215) is rotated to rotate the clamping column (222) to be misaligned with the notch (221). At this time, the clamping column (222) abuts against the sliding sleeve (216) to prevent the sliding sleeve (216) from moving upward, that is, the clamping plate (211) is fixed; Step 4: Place the welding head (106) to be replaced under the hollow convex plate (209), and then rotate the rotating shaft (215). When the clamping column (222) rotates to overlap with the notch (221), the two clamping plates (211) are driven to approach each other under the rebound force of the elastic member (214), and the clamping column (222) no longer blocks the sliding sleeve (216). The sliding sleeve (216) moves up, and when the two clamping plates (211) approach each other, the positioning column (212) is embedded in the positioning hole (114), and the installation of the new welding head (106) is completed.

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