Butt welding device with welding point shaping function and use method thereof

Abstract

The present invention discloses a butt welding device with a welding point shaping function and a method of using the same, and belongs to the technical field of automatic welding. The butt welding device with a welding point shaping function comprises a base; a butt welding assembly and a straightening assembly are installed on the top of the base, and a grinding assembly is installed on the upper end of the side wall of the base; the top of the base is fixedly connected to the bottom of the control box, and a slide groove is provided at the lower end of the side wall of the base for limited sliding connection with a slag receiving drawer, and the slag receiving drawer is located below the butt welding assembly; the butt welding assembly comprises a welding assembly and a sliding assembly; a welding assembly and a sliding assembly are installed on the top of the base, and a welding assembly is connected to the sliding assembly. In the above manner, the present invention clamps the workpiece through the welding assembly for extrusion, which can narrow the fusion point of the workpiece for easy grinding, and uses the method of the workpiece hitting the fixture to make the excess metal of the outer ring of the welding point fall off, saving grinding time and improving work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of automatic welding, and in particular to a butt welding device with a welding point shaping function and a use method thereof. Background Art

[0002] A butt welding machine is a welding device that uses the resistance between the contact surfaces to heat up and melt the contact surfaces and then connect them together. Butt welding machines are commonly used to connect metal materials such as bars, pipes, and wires. After butt welding is completed, the welding points need to be reshaped and polished.

[0003] The invention with publication number CN103203625B discloses a butt welding machine, which grinds the joint of the weldment by arranging a butt welding mechanism and a grinding device on an operating table, and adds a transparent baffle at the grinding position to prevent sparks from flying.

[0004] However, after welding, the joints in the workpiece joint area will be greatly deformed due to high temperature extrusion, and there will be very obvious bulges, which requires a long time to grind and has low work efficiency.

[0005] Based on this, the present invention designs a butt welding device with welding point shaping function and a use method thereof to solve the above problems. Summary of the invention

[0006] In view of the above-mentioned shortcomings of the prior art, the present invention provides a butt welding device with a welding point shaping function and a method for using the same.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0008] A butt welding device with a welding point shaping function, comprising a base;

[0009] A butt welding assembly and a straightening assembly for straightening the wire are installed on the top of the base, and a grinding assembly for grinding the welding point is installed on the upper end of the side wall of the base;

[0010] The top of the base is fixedly connected to the bottom of the control box, and a slide groove is provided at the lower end of the side wall of the base for limiting and sliding connection with the slag receiving drawer, and the slag receiving drawer is located below the butt welding assembly;

[0011] The butt welding assembly comprises a welding assembly and a sliding assembly; the welding assembly and the sliding assembly are installed on the top of the base, and the welding assembly is connected to the sliding assembly.

[0012] Furthermore, the welding assembly includes a first cylinder, a first bracket, a push rod, a lower clamp, an upper clamp and a flat plate; there are two groups of flat plates, the bottom of one group of flat plates is fixedly connected to the top of the base, and the bottom of the other group of flat plates is connected to the sliding assembly; the tops of the flat plates are respectively fixedly connected to a group of first brackets; the top of the first bracket is fixedly connected to the first cylinder; the output end of the first cylinder is fixedly connected to the top of the push rod, and the bottom of the push rod is fixedly connected to the top of the upper clamp; the lower clamp is fixedly connected to the flat plate, and the lower clamp is located directly below the upper clamp.

[0013] Furthermore, the sliding assembly includes a first cylinder, a slider, a second cylinder and a stopper; the top of the base is fixedly connected to a guide rail, and the guide rails are slidably connected to the sliders; the top of the slider is fixedly connected to the bottom of one group of flat plates, and the bottom of the group of flat plates is fixedly connected to the top of the second cylinder; the output end of the second cylinder is fixedly connected to the side wall of the stopper, and the bottom of the stopper is fixedly connected to the top of the base.

[0014] Furthermore, the straightening assembly includes a second bracket, a third cylinder, a push block and a support hook; the top of the base is fixedly connected to the bottom of the second bracket of the straightening assembly, and two groups of support hooks are fixedly connected to the upper end of the side wall of the second bracket; the third cylinder is fixedly connected to the upper end of the side wall of the second bracket, and the output end of the third cylinder is fixedly connected to the push block, and the push block and the support hook are located on the same side.

[0015] Furthermore, the grinding assembly includes a motor, a grinding wheel, a third bracket, a fourth cylinder, a rotating shaft, a transparent protective cover and a limit plate; a motor is fixedly installed on the upper end of the side wall of the base, and the output end of the motor is fixedly connected to the grinding wheel; a third bracket is fixedly installed on the upper end of the side wall of the base, and a fourth cylinder is fixedly connected to the side wall of the third bracket, and the output end of the fourth cylinder is in contact with the lower end of the side wall of the transparent protective cover; a rotating shaft is rotatably connected to the side wall of the third bracket, and the side wall of the rotating shaft is fixedly connected to the lower end of the side wall of the transparent protective cover; a limit plate is fixedly connected to the side wall of the third bracket, and the bottom of the limit plate is in contact with the side wall of the transparent protective cover.

[0016] Furthermore, the side wall of the push rod is connected to the inner wall of the first bracket in a limited sliding manner.

[0017] Furthermore, there are two groups of guide rails which are symmetrically distributed on both sides of the second cylinder.

[0018] Furthermore, two groups of sliding blocks are respectively installed on each group of guide rails.

[0019] Furthermore, a groove is provided on the push block.

[0020] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a butt welding device with a welding point shaping function, comprising the following steps:

[0021] Step 1: Place the end of the wire on the support hook, with the bent protrusion facing the push block, start the third cylinder to extend the output end of the third cylinder, and drive the push block forward; the wire is embedded in the groove, and the push block and the support hook squeeze the wire to straighten it;

[0022] Step 2: Place the two groups of workpieces to be welded on the lower clamps of the welding assemblies of the two groups of butt welding assemblies respectively, with the ends of the two workpieces in contact; press the button on the control box or step on the external foot switch to send a signal to the external control system to extend the first cylinder, drive the push rod to move downward, thereby driving the upper clamp to move downward to clamp the workpieces, and then power on for butt welding; while welding, the output end of the second cylinder of the sliding assembly extends, so that one group of plates moves along the guide rail toward the other group of plates, so that the melted ends of the workpieces are squeezed against each other and fused together;

[0023] Step 3: After the workpieces are fused, the second cylinder continues to extend, and the inner ends of the two sets of lower clamps begin to squeeze the fusion of the workpieces until the two sets of lower clamps flatten the excess part of the fusion in the middle of the workpieces;

[0024] Step 4: The lower clamp and the upper clamp on the fixed side are separated, and the second cylinder contracts at the same time, driving the lower clamp and the upper clamp on the movable side to reset, thereby pulling the workpiece to one side; then the upper clamp on the fixed side moves down again, so that the upper clamp is close to the workpiece, and there is a gap between the upper clamp and the workpiece, so that the workpiece can still slide freely, and then the second cylinder extends the movable side, and the lower clamp and the upper clamp on the movable side drive the workpiece to move toward the lower clamp and the upper clamp on the fixed side, so that the fusion of the workpiece hits the lower clamp and the upper clamp on the fixed side. At this time, the metal at the fusion of the workpiece has not cooled down yet, and part of the excess metal on the outer ring is knocked off, and then the lower clamp and the upper clamp on both sides are separated, and the second cylinder contracts to drive the lower clamp and the upper clamp on the movable side to reset, and the fallen metal falls into the slag receiving drawer;

[0025] Step 5: Remove the welded workpiece from the lower fixture, place the welded part of the workpiece close to the grinding wheel of the grinding assembly, start the grinding wheel by pressing the button on the control box, then the fourth cylinder contracts, and the transparent cover flips forward with gravity until it touches the limit plate and stops, covering the welded part and the grinding wheel of the workpiece, and then grinding can be carried out; after the processing is completed, the fourth cylinder extends to drive the transparent cover to lift up and take out the workpiece.

[0026] The present invention has the following technical effects:

[0027] 1. The present invention uses two sets of lower clamps and upper clamps to clamp the workpiece for extrusion, so that the fusion of the workpiece can be narrowed, which is convenient for grinding. The workpiece is used to hit the lower clamp, so that the excess metal of the outer ring of the welding part falls off, which saves grinding time and improves work efficiency.

[0028] 2. The present invention can quickly straighten the wire through the extrusion of the push block and the support hook, without manual straightening, which is convenient for subsequent processing;

[0029] 3. The present invention protects the grinding process through the transparent shield, which can prevent debris from splashing and improve safety. The transparent shield is driven to flip by the fourth cylinder, so that the workpiece can be placed in and taken out more conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A three-dimensional butt welding device with a welding point shaping function according to the present invention Figure 1 ;

[0032] Figure 2 It is a front view of a butt welding device with welding point shaping function of the present invention;

[0033] Figure 3 It is a left side view of a butt welding device with welding point shaping function of the present invention;

[0034] Figure 4 A three-dimensional butt welding device with a welding point shaping function according to the present invention Figure 2 ;

[0035] Figure 5 A three-dimensional butt welding device with a welding point shaping function according to the present invention Figure 3 ;

[0036] Figure 6 A three-dimensional butt welding device with a welding point shaping function according to the present invention Figure 4 ;

[0037] Figure 7 A three-dimensional butt welding device with a welding point shaping function according to the present invention Figure 5 ;

[0038] Figure 8 A three-dimensional diagram of the internal structure of a sliding assembly of a butt welding device with a welding point shaping function according to the present invention;

[0039] Fig. 9 The present invention is a stereoscopic diagram of a butt welding device with a welding point shaping function and a workpiece being assembled.

[0040] The numbers in the figure represent:

[0041] 1. Base; 2. Butt welding assembly; 21. Welding assembly; 211. First cylinder; 212. First bracket; 213. Push rod; 214. Lower fixture; 215. Upper fixture; 216. Flat plate; 22. Sliding assembly; 221. Guide rail; 222. Sliding block; 223. Second cylinder; 224. Stop block; 3. Straightening assembly; 31. Second bracket; 32. Third cylinder; 33. Push block; 34. Support hook; 35. Groove; 4. Grinding assembly; 41. Motor; 42. Grinding wheel; 43. Third bracket; 44. Fourth cylinder; 45. Rotating shaft; 46. Transparent shield; 47. Limiting plate; 5. Control box; 6. Slag drawer; 7. Workpiece. DETAILED DESCRIPTION

[0042] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] The present invention will be further described below in conjunction with the embodiments.

[0044] The terms “left”, “right”, “front”, “back”, “up” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0045] Example 1

[0046] Please refer to the instruction manual Figure 1-9 , a butt welding device with a welding point shaping function, comprising a base 1;

[0047] A butt welding assembly 2 and a straightening assembly 3 for straightening the wire are installed on the top of the base 1, and a grinding assembly 4 for grinding the welding point is installed on the upper end of the side wall of the base 1;

[0048] The top of the base 1 is fixedly connected to the bottom of the control box 5, and a slide groove is provided at the lower end of the side wall of the base 1 to be limitedly slidably connected to the slag receiving drawer 6, and the slag receiving drawer 6 is located below the butt welding assembly 2;

[0049] The welding assembly 2 includes a welding assembly 21 and a sliding assembly 22 . The welding assembly 21 and the sliding assembly 22 are installed on the top of the base 1 , and the sliding assembly 22 is connected to the welding assembly 21 .

[0050] The welding assembly 21 includes a first cylinder 211, a first bracket 212, a push rod 213, a lower clamp 214, an upper clamp 215 and a plate 216; there are two groups of plates 216, the bottom of one group of plates 216 is fixedly connected to the top of the base 1, and the bottom of the other group of plates 216 is connected to the sliding assembly 22; the tops of the plates 216 are respectively fixedly connected to a group of first brackets 212; the top of the first bracket 212 is fixedly connected to the first cylinder 211; the output end of the first cylinder 211 is fixedly connected to the top of the push rod 213, and the bottom of the push rod 213 is fixedly connected to the top of the upper clamp 215; the lower clamp 214 is fixedly connected to the plate 216, and the lower clamp 214 is located directly below the upper clamp 215.

[0051] Preferably, the side wall of the push rod 213 is connected to the inner wall of the first bracket 212 in a limited sliding manner.

[0052] The sliding assembly 22 includes a first cylinder 211, a slider 222, a second cylinder 223 and a stopper 224; a guide rail 221 is fixedly connected to the top of the base 1, and sliders 222 are slidably connected to the guide rails 221; the top of the slider 222 is fixedly connected to the bottom of one group of flat plates 216, and the bottom of the group of flat plates 216 is fixedly connected to the top of the second cylinder 223; the output end of the second cylinder 223 is fixedly connected to the side wall of the stopper 224, and the bottom of the stopper 224 is fixedly connected to the top of the base 1.

[0053] Preferably, there are two groups of guide rails 221 and they are symmetrically distributed on both sides of the second cylinder 223 .

[0054] Preferably, two groups of sliders 222 are respectively installed on each group of guide rails 221 .

[0055] When the present invention is working, two groups of workpieces to be welded are placed on the lower clamps 214 of the welding assemblies 21 of the two groups of butt welding assemblies 2, respectively, so that the ends of the two workpieces are in contact; the button on the control box 5 is pressed or the external foot switch is stepped on, and a signal is sent to the external control system to extend the first cylinder 211, drive the push rod 213 to move downward, thereby driving the upper clamp 215 to move downward to clamp the workpieces, and then power is turned on to perform butt welding; while welding, the output end of the second cylinder 223 of the sliding assembly 22 is extended, so that one of the plates 216 Move along the guide rail 221 toward another set of flat plates 216, so that the melted ends of the workpieces are squeezed against each other and fused together; after the workpieces are fused, the second cylinder 223 continues to extend, and the inner ends of the two sets of lower clamps 214 begin to squeeze the fusion of the workpieces until the two sets of lower clamps 214 clamp the excess part of the fusion in the middle of the workpieces; then the lower clamp 214 and the upper clamp 215 on the fixed side are separated, and at the same time the second cylinder 223 contracts, driving the lower clamp 214 and the upper clamp 215 on the movable side to reset, thereby pulling the workpiece to move to one side; then The upper clamp 215 on the fixed side moves down again, so that the upper clamp 215 is close to the workpiece, and there is a gap between the upper clamp 215 and the workpiece, so that the workpiece can still slide freely. Then the second cylinder 223 extends, and the lower clamp 214 and the upper clamp 215 on the movable side drive the workpiece to move toward the lower clamp 214 and the upper clamp 215 on the fixed side, so that the fusion part of the workpiece hits the lower clamp 214 and the upper clamp 215 on the fixed side. At this time, the metal at the fusion part of the workpiece has not cooled down yet, and part of the excess metal on the outer ring is knocked off, and then the lower clamps on both sides are 214 and the upper clamp 215 are separated, and the second cylinder 223 contracts to drive the lower clamp 214 and the upper clamp 215 on the movable side to reset, and the fallen metal falls into the slag receiving drawer 6; then the welding point is polished using the polishing assembly 4 to complete the processing; by using two sets of lower clamps 214 and upper clamps 215 to clamp the workpiece for extrusion, the fusion point of the workpiece can be narrowed for easy polishing, and the method of using the workpiece to hit the lower clamp 214 can cause the excess metal on the outer circle of the welding point to fall off, saving polishing time and improving work efficiency.

[0056] Example 2

[0057] like Figure 1-9 As shown, as a preferred embodiment of the present invention, the straightening assembly 3 includes a second bracket 31, a third cylinder 32, a push block 33 and a support hook 34; the top of the base 1 is fixedly connected to the bottom of the second bracket 31 of the straightening assembly 3, and two groups of support hooks 34 are fixedly connected to the upper end of the side wall of the second bracket 31; the third cylinder 32 is fixedly connected to the upper end of the side wall of the second bracket 31, and the output end of the third cylinder 32 is fixedly connected to the push block 33, and the push block 33 and the support hook 34 are located on the same side.

[0058] Preferably, a groove 35 is formed on the push block 33 .

[0059] When the present invention is working, when it is necessary to weld a wire with a bent end, the end of the wire is placed on the support hook 34, the bent protrusion is facing the push block 33, the third cylinder 32 is started to extend the output end of the third cylinder 32, and the push block 33 is driven forward; the wire is embedded in the groove 35, and the push block 33 and the support hook 34 squeeze the wire so that the wire is straightened; through the squeezing of the push block 33 and the support hook 34, the wire can be quickly straightened without manual knocking and straightening, which is convenient for subsequent processing.

[0060] Example 3

[0061] like Figure 1-9 As shown, as a preferred embodiment of the present invention, the grinding assembly 4 includes a motor 41, a grinding wheel 42, a third bracket 43, a fourth cylinder 44, a rotating shaft 45, a transparent protective cover 46 and a limit plate 47; the motor 41 is fixedly installed on the upper end of the side wall of the base 1, and the output end of the motor 41 is fixedly connected to the grinding wheel 42; the third bracket 43 is fixedly installed on the upper end of the side wall of the base 1, and the fourth cylinder 44 is fixedly connected to the side wall of the third bracket 43, and the output end of the fourth cylinder 44 is in contact with the lower end of the side wall of the transparent protective cover 46; the rotating shaft 45 is rotatably connected to the side wall of the third bracket 43, and the side wall of the rotating shaft 45 is fixedly connected to the lower end of the side wall of the transparent protective cover 46; the limiting plate 47 is fixedly connected to the side wall of the third bracket 43, and the bottom of the limiting plate 47 is in contact with the side wall of the transparent protective cover 46.

[0062] When the present invention is working, the welding part of the workpiece is brought close to the grinding wheel 42 of the grinding assembly 4, and the grinding wheel 42 is started by the button on the control box 5, then the fourth cylinder 44 contracts, and the transparent shield 46 flips forward with gravity until it touches the limit plate 47 and stops, covering the welding part and the grinding wheel 42 of the workpiece, and then the grinding process can be carried out; after the process is completed, the fourth cylinder 44 extends to drive the transparent shield 46 to tilt up, and the workpiece is taken out; the transparent shield 46 is used to protect the grinding process, and debris can be prevented from splashing, thereby improving safety; the transparent shield 46 is driven by the fourth cylinder 44 to flip, so that the workpiece can be put in and taken out more conveniently.

[0063] Please refer to the instruction manual Figure 1-9 , a method for using a butt welding device with a welding point shaping function, the following steps:

[0064] Step 1: Place the end of the wire on the support hook 34, with the bent protrusion facing the push block 33, start the third cylinder 32 to extend the output end of the third cylinder 32, and drive the push block 33 to push forward; the wire is embedded in the groove 35, and the push block 33 and the support hook 34 squeeze the wire, so that the wire is straightened;

[0065] Step 2: Place the two groups of workpieces to be welded on the lower clamps 214 of the welding assemblies 21 of the two groups of butt welding assemblies 2, respectively, with the ends of the two workpieces in contact; press the button on the control box 5 or step on the external foot switch to send a signal to the external control system to extend the first cylinder 211, drive the push rod 213 to move downward, thereby driving the upper clamp 215 to move downward to clamp the workpieces, and then power on for butt welding; while welding, the output end of the second cylinder 223 of the sliding assembly 22 extends, so that one group of flat plates 216 moves along the guide rail 221 toward the other group of flat plates 216, so that the melted ends of the workpieces are squeezed against each other and fused together;

[0066] Step 3: After the workpieces are fused, the second cylinder 223 continues to extend, and the inner ends of the two sets of lower clamps 214 begin to squeeze the fusion part of the workpieces until the two sets of lower clamps 214 flatten the excess part of the fusion part in the middle of the workpieces;

[0067] Step 4: The lower clamp 214 and the upper clamp 215 on the fixed side are separated, and at the same time, the second cylinder 223 contracts, driving the lower clamp 214 and the upper clamp 215 on the movable side to reset, thereby pulling the workpiece to one side; then the upper clamp 215 on the fixed side moves down again, so that the upper clamp 215 is close to the workpiece, and there is a gap between the upper clamp 215 and the workpiece, so that the workpiece can still slide freely, and then the second cylinder 223 extends the movable side, and the lower clamp 214 and the upper clamp 215 on the movable side are 15 drives the workpiece to move toward the lower clamp 214 and the upper clamp 215 on the fixed side, so that the fusion part of the workpiece hits the lower clamp 214 and the upper clamp 215 on the fixed side. At this time, the metal at the fusion part of the workpiece has not cooled down yet, and part of the excess metal of the outer ring is knocked off, and then the lower clamp 214 and the upper clamp 215 on both sides are separated, and the second cylinder 223 contracts to drive the lower clamp 214 and the upper clamp 215 on the movable side to reset, and the fallen metal falls into the slag receiving drawer 6;

[0068] Step 5: Remove the welded workpiece from the lower clamp 214, place the welded portion of the workpiece close to the grinding wheel 42 of the grinding assembly 4, start the grinding wheel 42 by pressing the button on the control box 5, then the fourth cylinder 44 contracts, and the transparent protective cover 46 flips forward with gravity until it touches the limit plate 47 and stops, covering the welded portion of the workpiece and the grinding wheel 42, and then the grinding process can be carried out; after the process is completed, the fourth cylinder 44 extends to drive the transparent protective cover 46 to tilt up, and the workpiece is taken out.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for using a butt welding device with a welding point shaping function, characterized in that: A butt welding device with a welding point shaping function comprises a base (1); a butt welding assembly (2) and a straightening assembly (3) for straightening a straight wire are installed on the top of the base (1); a grinding assembly (4) for grinding the welding point is installed on the upper end of the side wall of the base (1); the top of the base (1) is fixedly connected to the bottom of a control box (5); a sliding groove is provided at the lower end of the side wall of the base (1) and is limitedly slidably connected to a slag receiving drawer (6); the slag receiving drawer (6) is located below the butt welding assembly (2); the butt welding assembly (2) comprises a welding assembly (21) and a sliding assembly (22); the top of the base (1) is installed with the welding assembly (21) and the sliding assembly (22); the sliding assembly (22) is connected to the welding assembly (21); The welding assembly (21) comprises a first cylinder (211), a first bracket (212), a push rod (213), a lower clamp (214), an upper clamp (215) and a plate (216); there are two groups of plates (216), the bottom of one group of plates (216) is fixedly connected to the top of the base (1), and the bottom of the other group of plates (216) is connected to the sliding assembly (22); the tops of the plates (216) are respectively fixedly connected to a group of first brackets (212); the top of the first bracket (212) is fixedly connected to the first cylinder (211); the output end of the first cylinder (211) is fixedly connected to the top of the push rod (213), and the bottom of the push rod (213) is fixedly connected to the top of the upper clamp (215); the plate The lower clamp (214) is fixedly connected to the upper clamp (216), and the lower clamp (214) is located directly below the upper clamp (215); the sliding assembly (22) comprises a first cylinder (211), a slider (222), a second cylinder (223) and a stopper (224); the top of the base (1) is fixedly connected to a guide rail (221), and the guide rail (221) is slidably connected to the slider (222); the top of the slider (222) is fixedly connected to the bottom of one group of plates (216), and the bottom of the group of plates (216) is fixedly connected to the top of the second cylinder (223); the output end of the second cylinder (223) is fixedly connected to the side wall of the stopper (224), and the bottom of the stopper (224) is fixedly connected to the top of the base (1). The straightening assembly (3) comprises a second bracket (31), a third cylinder (32), a push block (33) and a support hook (34); the top of the base (1) is fixedly connected to the bottom of the second bracket (31) of the straightening assembly (3), and the upper end of the side wall of the second bracket (31) is fixedly connected to two groups of support hooks (34); the upper end of the side wall of the second bracket (31) is fixedly connected to the third cylinder (32), the output end of the third cylinder (32) is fixedly connected to the push block (33), and the push block (33) and the support hook (34) are located on the same side; the grinding assembly (4) comprises a motor (41), a grinding wheel (42), a third bracket (43), a fourth cylinder (44), a rotating shaft (45), a transparent shield (46) and a limit plate (47);A motor (41) is fixedly mounted on the upper end of the side wall of the base (1), and the output end of the motor (41) is fixedly connected to the grinding wheel (42); a third bracket (43) is fixedly mounted on the upper end of the side wall of the base (1), and a fourth cylinder (44) is fixedly connected to the side wall of the third bracket (43), and the output end of the fourth cylinder (44) is in contact with the lower end of the side wall of the transparent protective cover (46); a rotating shaft (45) is rotatably connected to the side wall of the third bracket (43), and the side wall of the rotating shaft (45) is fixedly connected to the lower end of the side wall of the transparent protective cover (46); a limiting plate (47) is fixedly connected to the side wall of the third bracket (43), and the bottom of the limiting plate (47) is in contact with the side wall of the transparent protective cover (46); the side wall of the push rod (213) is limitedly slidably connected to the inner wall of the first bracket (212); and a groove (35) is provided on the push block (33); The method for using the butt welding device with the welding point shaping function comprises the following steps: Step 1: placing the end of the wire on the support hook (34), with the bent protrusion facing the push block (33), starting the third cylinder (32) to extend the output end of the third cylinder (32), and driving the push block (33) to push forward; the wire is embedded in the groove (35), and the push block (33) and the support hook (34) squeeze the wire, so that the wire is straightened; Step 2: Place two groups of workpieces to be welded on the lower clamps (214) of the welding assemblies (21) of the two groups of butt welding assemblies (2) respectively, with the ends of the two workpieces in contact with each other; press a button on the control box (5) or step on an external foot switch to send a signal to the external control system to extend the first cylinder (211), drive the push rod (213) to move downward, thereby driving the upper clamp (215) to move downward to clamp the workpieces, and then power on to perform butt welding; while welding, the output end of the second cylinder (223) of the sliding assembly (22) extends, so that one group of flat plates (216) moves along the guide rail (221) toward the other group of flat plates (216), so that the melted ends of the workpieces are pressed against each other and fused together; Step 3: After the workpieces are fused, the second cylinder (223) continues to extend, and the inner ends of the two sets of lower clamps (214) begin to squeeze the fused portion of the workpieces until the two sets of lower clamps (214) flatten the excess portion of the fused portion in the middle of the workpieces; Step 4: The lower clamp (214) and the upper clamp (215) on the fixed side are separated, and at the same time, the second cylinder (223) contracts, driving the lower clamp (214) and the upper clamp (215) on the movable side to reset, thereby pulling the workpiece to one side; then the upper clamp (215) on the fixed side is moved down again, so that the upper clamp (215) and the workpiece are close to each other, and there is a gap between the upper clamp (215) and the workpiece, so that the workpiece can still slide freely, and then the second cylinder (223) extends, driving the lower clamp (214) and the upper clamp (215) on the movable side to move. 215) drives the workpiece to move toward the lower fixture (214) and the upper fixture (215) on the fixed side, so that the fusion part of the workpiece hits the lower fixture (214) and the upper fixture (215) on the fixed side. At this time, the metal at the fusion part of the workpiece has not yet cooled, and part of the excess metal on the outer ring is knocked off, and then the lower fixture (214) and the upper fixture (215) on both sides are separated, and the second cylinder (223) contracts to drive the lower fixture (214) and the upper fixture (215) on the movable side to reset, and the fallen metal falls into the slag receiving drawer (6); Step 5: Remove the welded workpiece from the lower fixture (214), bring the welded portion of the workpiece close to the grinding wheel (42) of the grinding assembly (4), and start the grinding wheel (42) by pressing the button on the control box (5). Then, the fourth cylinder (44) contracts, and the transparent shield (46) flips forward due to gravity until it touches the limit plate (47) and stops, covering the welded portion of the workpiece and the grinding wheel (42). Then, the grinding process can be carried out. After the process is completed, the fourth cylinder (44) extends to drive the transparent shield (46) to tilt up, and the workpiece is taken out.

2. The method of use according to claim 1, characterized in that: There are two groups of guide rails (221) which are symmetrically distributed on both sides of the second cylinder (223).

3. The method of use according to claim 2, characterized in that: Two groups of sliding blocks (222) are respectively mounted on each group of guide rails (221).

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