A resistance welding device

Abstract

The present invention discloses a resistance welding device, which includes a frame and a resistance welding unit. There are two sets of resistance welding units, and these two sets of resistance welding units are fixed on the bottom plate inside the frame and share a material receiving mechanism. The resistance welding unit includes a vibrating bowl feeder, a feeding mechanism for material A, a feeding mechanism for material B, a fixing mechanism for material B, and a fixing mechanism for material A. The resistance welding device of the present invention uses a double-station resistance welding mechanism and a set of material receiving mechanisms to achieve the welding of milling cutters, improving the welding efficiency. The shank and the cutting edge of the milling cutter are fed to the Z-axis direction through two vibrating bowls, and then the shank and the cutting edge are sent to the welding station through a rotating mechanism. The shank and the cutting edge are brought into contact by the movement of the welding part of the cutting edge. After the circuits on both sides are conducted, the shank and the cutting edge are welded together. The present invention ingeniously uses two sets of rotating mechanisms to rotate the shank and the cutting edge by 90 degrees, achieving efficient feeding and also improving the accuracy of the feeding position.

Description

Technical Field

[0001] The present invention relates to welding equipment, specifically to a resistance welding equipment. Background Art

[0002] Resistance welding refers to a method of welding in which the resistance heat generated by the current passing through the workpiece and the contact area is used as the heat source to locally heat the workpiece, and at the same time pressure is applied for welding. During welding, no filler metal is required, the production efficiency is high, the deformation of the workpiece is small, and it is easy to realize automation. Resistance welding uses the resistance heat effect generated by the current flowing through the contact surface and the adjacent area of the workpiece to heat it to the melting or plastic state, so as to form a method of metal bonding.

[0003] The milling cutter has many functions, such as milling holes on the plate surface.

[0004] Currently, in order to facilitate installation, many products mill holes on the plate surface to improve the installation efficiency. For example, holes are milled on the PCB board, and a special PCB milling cutter is required to mill the holes on the PCB.

[0005] If the entire milling cutter is made of the milling end material, the cost of the entire milling cutter will be relatively high, and it cannot meet the market competitiveness. It is necessary to use two materials welded together to replace the all-material milling cutter with a higher cost.

[0006] Therefore, it is necessary to develop a resistance welding equipment to weld two materials to form a milling cutter with a lower cost. Summary of the Invention

[0007] Aiming at the deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a resistance welding equipment, and the purpose of designing this resistance welding equipment is to reduce costs.

[0008] To solve the above technical problem, the present invention is realized through the following solutions: A resistance welding equipment of the present invention includes a frame and a resistance welding unit group. There are two groups of the resistance welding unit group, and these two groups of resistance welding unit groups are fixed on the bottom plate inside the frame and share a material receiving mechanism;

[0009] The resistance welding unit group includes:

[0010] A vibrating bowl feeding device, which has two vibrating bowls. The two vibrating bowls respectively convey the pre-welding material A and the pre-welding material B through vibration;

[0011] A material A feeding mechanism, which has a first clamping part for receiving the material A and capable of automatically releasing, a first rotation driving mechanism for driving the first clamping part to rotate so that the material A rotates from the Z direction to the X direction, and a first pushing mechanism for pushing the material A in the X direction out of the first clamping part;

[0012] B - material feeding mechanism, which has a second clamping part for receiving the B - material and capable of automatic loosening, a second rotation driving mechanism for driving the second clamping part to rotate so as to rotate the B - material from the Z - direction to the X - direction, and a second pushing mechanism for pushing the B - material in the X - direction out of the second clamping part;

[0013] B - material fixing mechanism, which receives the B - material pushed out by the B - material feeding mechanism, has a fixed B - material welding part thereon, and a material - pressing mechanism for pressing the B - material when the B - material enters the B - material welding part;

[0014] A - material fixing mechanism, which receives the A - material pushed out by the A - material feeding mechanism, has an XYZ adjusting mechanism for adjusting the welding position of the A - material, a movable A - material welding part, and an X - axis power mechanism for driving the A - material welding part to move along the X - direction. After the B - material of the B - material welding part and the A - material of the A - material welding part are fixed coaxially, the X - axis power mechanism drives the A - material to move so that the ends of the A - material and the B - material are in contact connection, and the A - material and the B - material are welded together after being electrified by the A - material welding part and the B - material welding part.

[0015] Furthermore, the two vibrating bowls of the vibrating - bowl feeding device are set at a raised height by support columns, and their respective feeding channels guide the A - material and the B - material to be discharged in the Z - direction.

[0016] Furthermore, in the A - material feeding mechanism:

[0017] The first rotation driving mechanism is fixed on a vertical plate, and the vertical plate is fixed on the bottom plate. The first rotation driving mechanism includes a first rotation swing cylinder fixed on one side of the vertical plate, a first rotation arm rotatably installed on the vertical plate, and a rotation shaft connected to the inner rotation end of the first rotation arm and extending to the other side of the vertical plate. The first rotation swing cylinder is drivingly connected to the outer rotation end of the first rotation arm, and the first clamping part is fixed to the outer end of the rotation shaft and rotates with the rotation shaft;

[0018] A connecting rod is fixed to the top of the vertical plate. A first guide post for receiving the A - material is provided at the outer end of the connecting rod. The first guide post has a first Z - direction guide hole. The connecting rod is also connected to a first curved rod, and a rotatable first roller is installed on the lower side of the outer end of the first curved rod;

[0019] The first clamping part includes:

[0020] A first cylinder fixing seat vertically fixed to the end of the rotation shaft;

[0021] A first cylinder fixed on the first cylinder fixing seat;

[0022] A movable bracket that is drivingly connected to the first cylinder and moves along the side shell of the first cylinder. An A-material guiding groove that can be coaxial with the first Z-direction guiding hole is provided on the movable bracket;

[0023] An A-material clamping handle, which is rotatably mounted in the middle on the movable bracket, and one end of the A-material clamping handle covers the A-material guiding groove. When the first clamping part moves in the Z-direction, the other end of the A-material clamping handle can be pressed by the first roller, so that the A-material clamping handle releases the A-material guiding groove.

[0024] Furthermore, the first pushing mechanism includes:

[0025] A second cylinder, which is fixed on the movable bracket, is drivingly connected with a movable block, and the movable block is connected with two guide posts;

[0026] A first push rod, one end of which is fixed on the movable block, and the other end of which is inserted into the A-material guiding groove.

[0027] Further, in the B-material feeding mechanism:

[0028] The second rotary driving mechanism is fixed on a mounting seat, the mounting seat is fixed on the bottom plate, and a mounting block is provided at its upper end. The second rotary driving mechanism includes a second rotary swing cylinder fixed on one side surface of the mounting block, a second rotary arm rotatably mounted on the side part of the mounting block, and a rotary bracket connected to the inner rotary end of the second rotary arm and extending to the other side surface of the mounting block. The second rotary swing cylinder is drivingly connected to the outer rotary end of the second rotary arm, and the second clamping part is fixed at the outer end of the rotary bracket and rotates along with the rotary bracket;

[0029] A guiding block assembly is fixed at the upper end of the mounting block. A second guiding post is fixed at the upper end of the guiding block assembly. The second guiding post has a second Z-direction guiding hole. A second curved rod is also installed on one side of the guiding block assembly, and a second roller is installed at the lower end of the second curved rod;

[0030] The second clamping part includes:

[0031] A fixed clamping block fixed on the side part of the rotary bracket. The fixed clamping block is provided with a B-material guiding groove that can be coaxial with the second Z-direction guiding hole;

[0032] A B-material clamping handle rotatably fixed on the fixed clamping block. One end of the B-material clamping handle covers the B-material guiding groove. After the B-material clamping handle moves to the second roller, it can be pressed down by the second roller so that the B-material clamping handle releases the B-material guiding groove;

[0033] The second pushing mechanism includes a first X-axis linear cylinder fixed on the mounting base and a second push rod drivingly connected to the first X-axis linear cylinder. When the second clamping portion rotates to the X-axis direction, the second push rod is coaxial with the B-material feeding chute and the second push rod can be pushed into the B-material feeding chute.

[0034] Furthermore, two sets of limiters are also provided on the mounting block, and the two sets of limiters are arranged at an angle to limit the rotation of the second rotating arm within a range of 90 degrees.

[0035] Further, in the B-material fixing mechanism:

[0036] The B-material welding portion includes a B-material welding seat fixed on the bottom plate, a welding bracket installed at the top end of the B-material welding seat, a B-material conductive bracket rotatably installed on the welding bracket, and a first lifting cylinder laterally fixed on the welding bracket and having a driving end connected to one end of the B-material conductive bracket;

[0037] One side angle groove of the welding bracket is provided with a V-shaped bracket mounting seat, a V-shaped bracket is installed on the V-shaped bracket mounting seat, and a first V-shaped groove is provided on the V-shaped bracket for the B-material to enter. After being driven by the first lifting cylinder, the B-material conductive bracket can be pressed down towards the first V-shaped groove;

[0038] A material guiding block for receiving the B-material is further installed on the B-material welding seat, and a second V-shaped groove is provided at the upper end of the material guiding block, and the second V-shaped groove is coaxial with the first V-shaped groove;

[0039] The B-material conductive bracket is connected with a first power cable;

[0040] The material pressing mechanism includes:

[0041] A third cylinder fixed on one side of the welding bracket;

[0042] A damping rod assembly movably installed on the B-material welding seat in the Y-axis direction. The damping rod on the damping rod assembly is arranged in the Y-direction, and its moving path can reach the upper side of the first V-shaped groove.

[0043] Further, in the A-material fixing mechanism, the XYZ adjustment mechanism includes:

[0044] A lower sliding seat fixed on the bottom plate. The upper part of the lower sliding seat has an inclined structure and a tenon part in the shape of a dovetail, and the tenon part is in the X-axis direction;

[0045] An upper sliding seat slidably connected to the lower sliding seat. The lower bottom surface of the upper sliding seat has a tenon groove matching the tenon part. The tenon groove is an inclined structure in the shape of a dovetail groove. By moving the upper sliding seat, the height of the welding point can be adjusted, and at the same time, the X-axis position of the welding point can be adjusted by moving the upper sliding seat in the X-direction;

[0046] The Y-axis adjusting part is arranged on the A-material welding part and adjusts the Y-axis position of the welding point through a lead screw.

[0047] Furthermore, on one side of the lower sliding seat facing the B-material fixing mechanism, there is a buffer plate which is rotatably connected to the lower sliding seat, and a spring is installed inside it;

[0048] A positioning plate is also fixed on the side of the lower sliding seat, and the positioning plate extends upward to the upper sliding seat and has an inclined adjusting hole on the positioning plate. The position of the upper sliding seat is fixed by tightening an adjusting screw on the adjusting hole;

[0049] The height between the lower sliding seat and the upper sliding seat is measured by a first micrometer.

[0050] The X-axis position of the upper sliding seat is measured by a micrometer which is arranged beside the lower sliding seat and fixed in the X direction.

[0051] Double-row guide rails are provided at the top of the upper sliding seat, and a slider is slidably connected on the double-row guide rails, and a movable plate is installed on the slider;

[0052] At one end of the upper sliding seat away from the B-material fixing mechanism, a second X-axis linear cylinder is installed through a cylinder seat. The second X-axis linear cylinder is drivingly connected to the A-material welding part, and the A-material welding part is fixed on the movable plate;

[0053] The A-material welding part includes:

[0054] A fixed block fixed on one side of the movable plate, and the fixed block is drivingly connected to the second X-axis linear cylinder. The outer end of the driving rod of the second X-axis linear cylinder is connected with a telescopic rod, and a spring is sleeved outside the telescopic rod;

[0055] A Y-direction movable block is connected to the fixed block through a dovetail mortise and tenon joint. The Y-direction movable block can move in the Y-axis direction on the fixed block. The lead screw is screwed on the Y-direction movable block. By rotating the lead screw, the Y-direction movable block is driven to move in the Y-axis direction, and the moving distance of the Y-direction movable block is measured by a second micrometer;

[0056] An A-material fixing bracket is fixed on the front side of the Y-direction movable block, and there is a receiving groove on one side of the A-material fixing bracket;

[0057] A second lifting cylinder is fixed at one end of the A-material fixing bracket through a cylinder seat;

[0058] An A-material conductive bracket is rotatably installed at the upper end of the A-material fixing bracket. One end of it is drivingly connected to the second lifting cylinder, and the A-material conductive bracket is also connected with a second power cable;

[0059] The A-material pressing block is installed in the side groove at the other end of the A-material conductive bracket. The A-material pressing block is a regular polygonal column block, and different-sized fourth V-shaped grooves are provided on its respective sides.

[0060] The A-material positioning seat is fixed in the accommodation groove, and its top end has a third V-shaped groove for the A-material to enter.

[0061] Furthermore, the material receiving mechanism includes:

[0062] The material picking and rotating part, the power part is installed on the lower plate surface of the bottom plate. The power part is a fourth air cylinder. The fourth air cylinder drives and connects one end of a third rotating arm. A material receiving chuck is installed at the outer end of the third rotating arm. The material receiving chuck reciprocates between the welding point and the blanking station following the rotation of the third rotating arm.

[0063] The belt conveying part has a belt conveying line and a power motor for driving the belt on the belt conveying line to rotate. A blanking port is provided at the feeding port of the belt conveying line. Pushing mechanisms are arranged oppositely on the left and right sides of the blanking port. The pushing mechanism includes a fifth air cylinder installed on the upper side at one end of the belt conveying line and a pushing block driven and connected to the fifth air cylinder. A feeding groove is provided at the lower end of the pushing block for the welded product to enter. The pushing block can make the feeding groove reach the blanking port through the pushing of the fifth air cylinder.

[0064] The material guiding bridge is inclinedly installed on the bottom plate through a bracket, and its feeding end is close to the discharging port of the belt conveying line.

[0065] The finished product collecting part has a finished product collecting box fixed on the bottom plate, a servo motor installed at one end of the finished product collecting box, a conveyor belt arranged in the collecting box, and anti-stack blocks fixed on the conveyor belt. The servo motor drives and connects the conveyor belt. The discharging port of the material guiding bridge is arranged at one end of the finished product collecting box. An anti-material dropping block close to the conveyor belt is fixed at the feeding end of the finished product collecting box.

[0066] The discharging pushing mechanism includes a push rod seat installed on the bottom plate, a double-row slide rail fixed at the top end of the push rod seat, two groups of push rod fixing blocks slidably connected to the double-row slide rail, two top rods respectively fixed on the two groups of push rod fixing blocks, and two groups of third X-axis linear air cylinders installed at one end of the push rod seat and driving and connecting the two groups of push rod fixing blocks. At the end of the push rod seat away from the third X-axis linear air cylinder, a guiding block is installed, and two guiding holes are provided on the guiding block. The two top rods pass through the two guiding holes.

[0067] Compared with the prior art, the beneficial effect of the present invention is that the resistance welding equipment of the present invention uses a double-station resistance welding mechanism and a set of material receiving mechanisms to realize the welding of the milling cutter, improving the welding efficiency.

[0068] The shank and the cutting edge of the milling cutter are fed in the Z-axis direction by two vibrating bowls, and then the shank and the cutting edge are sent to the welding station through a rotating mechanism. The shank and the cutting edge are brought into contact by the movement of the welding part of the cutting edge. After the circuits on both sides are conducted, the shank and the cutting edge are welded together. The present invention ingeniously adopts two sets of rotating mechanisms to rotate the shank and the cutting edge by 90 degrees, improving the feeding efficiency and the accuracy of the feeding position at the same time.

[0069] When the shank and the cutting edge are in contact, a damping rod assembly is provided at the welding part of the shank. The damping rod assembly prevents the shank from moving too fast and also prevents the problem that the shank retreats too fast during the contact process between the shank and the cutting edge, thereby avoiding the generation of gaps between the shank and the cutting edge.

[0070] The A-material fixing mechanism of the present invention manually adjusts the positions of the X, Y, and Z axes of the welding point of the cutting edge, rather than using an XYZ-axis driving mechanism for adjustment, reducing the occupied space of the A-material fixing mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] Figure 1 It is an installation structure diagram of the resistance welding equipment frame of the present invention and the resistance welding unit arranged inside the frame.

[0072] Figure 2 It is an installation position structure diagram of each mechanism on the resistance welding unit of the present invention.

[0073] Figure 3 It is a top view of the resistance welding unit of the present invention.

[0074] Figure 4 It is a structure diagram of one group of the resistance welding units of the present invention after removing the vibrating bowl feeding device.

[0075] Figure 5 It is an installation structure diagram of the A-material feeding mechanism and the B-material fixing mechanism of the present invention.

[0076] Figure 6 It is an installation structure diagram of the first clamping part and the first pushing mechanism of the present invention.

[0077] Figure 7 It is an installation structure diagram of the movable bracket and the first push rod of the present invention.

[0078] Figure 8 It is a structure diagram of the B-material fixing mechanism of the present invention.

[0079] Figure 9 It is a structure diagram of the B-material feeding mechanism of the present invention.

[0080] Figure 10 It is an installation structure diagram of the second rotating arm of the present invention.

[0081] Figure 11This is the installation structure diagram of the second clamping part of the present invention.

[0082] Figure 12 This is the structure diagram of the A-material fixing mechanism of the present invention.

[0083] Figure 13 This is the structure diagram of the driving end of the second X-axis linear cylinder of the present invention.

[0084] Figure 14 This is the installation structure diagram of the A-material positioning seat and the A-material pressing block of the present invention.

[0085] Figure 15 This is the structure diagram of the A-material positioning seat of the present invention.

[0086] Figure 16 This is the installation structure diagram of the lower sliding seat and the upper sliding seat of the present invention.

[0087] Figure 17 This is the structure diagram of the material receiving mechanism of the present invention.

[0088] Figure 18 This is the installation position structure diagram of the material picking rotating part and the belt conveying part of the present invention.

[0089] Figure 19 This is the structure diagram of the discharging pushing mechanism of the present invention. Detailed implementation manners

[0090] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the protection scope of the present invention. In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0091] Embodiment 1: The specific structure of the present invention is as follows:

[0092] Please refer to the attached Figure 1-19 , a resistance welding device of the present invention includes a frame 1 and a resistance welding unit 2, characterized in that there are two groups of the resistance welding units 2, and the two groups of the resistance welding units 2 are fixed on the bottom plate 11 in the frame 1 and share a material receiving mechanism 26;

[0093] The resistance welding unit 2 includes:

[0094] A vibrating disk feeding device 21, having two groups of vibrating disks, and the two groups of vibrating disks respectively convey the pre-welded A material 200 and the pre-welded B material 100 through vibration;

[0095] A material feeding mechanism 22, the A material feeding mechanism 22 having a first clamping portion that receives the A material 200 and can automatically release, a first rotation driving mechanism that drives the first clamping portion to rotate so that the A material rotates from the Z direction to the X direction, and a first pushing mechanism that pushes the A material in the X direction out of the first clamping portion;

[0096] B material feeding mechanism 23, the B material feeding mechanism 23 having a second clamping portion 238 that receives the B material and can automatically release, a second rotation driving mechanism that drives the second clamping portion 238 to rotate so that the B material rotates from the Z direction to the X direction, and a second pushing mechanism that pushes the B material in the X direction out of the second clamping portion 238;

[0097] B material fixing mechanism 24, the B material fixing mechanism 24 receiving the B material pushed out by the B material feeding mechanism 23, having a fixed B material welding portion thereon and a material pressing mechanism that presses the B material when the B material enters the B material welding portion;

[0098] A material fixing mechanism 25, the A material fixing mechanism 25 receiving the A material pushed out by the A material feeding mechanism 22, having an XYZ adjusting mechanism for adjusting the A material welding position thereon, a movable A material welding portion, and an X-axis power mechanism that drives the A material welding portion to move in the X direction. The B material 100 of the B material welding portion and the A material 200 of the A material welding portion are coaxial after being fixed. After the X-axis power mechanism drives the A material to move, the A material and the end of the B material are in contact connection, and the A material and the B material are welded together after the A material welding portion and the B material welding portion are electrified.

[0099] A preferred technical solution of this embodiment: The two vibrating bowls of the vibrating bowl feeding device 21 are set at a height by support columns, and the A material and the B material are in the Z direction when they are discharged through their respective feeding channels.

[0100] A preferred technical solution of this embodiment: In the A material feeding mechanism 22:

[0101] The first rotation driving mechanism is fixed on a vertical plate 221, the vertical plate 221 is fixed on the bottom plate 11, the first rotation driving mechanism includes a first rotation swing cylinder 228 fixed on one side surface of the vertical plate 221, a first rotation arm 226 rotatably installed on the vertical plate 221, and a rotation shaft 227 connected to the inner rotation end of the first rotation arm 226 and extending to the other side surface of the vertical plate 221. The first rotation swing cylinder 228 is drivingly connected to the outer rotation end of the first rotation arm 226, and the first clamping portion is fixed to the outer end of the rotation shaft 227 and rotates with the rotation shaft 227;

[0102] At the top end of the vertical plate 221, a connecting rod 222 is fixed. At the outer end of the connecting rod 222, a first material guiding column 2213 for receiving material A is provided. The first material guiding column 2213 has a first Z-direction guiding hole. The connecting rod 222 is also connected to a first curved rod 223. At the lower side of the outer end of the first curved rod 223, a rotatable first roller 2211 is installed.

[0103] The first clamping portion includes:

[0104] A first cylinder fixed seat vertically fixed at the end of the rotating shaft 227;

[0105] A first cylinder 225 fixed on the first cylinder fixed seat;

[0106] A movable bracket 224 drivingly connected to the first cylinder 225 and moving along the side shell of the first cylinder 225. An A-material guiding groove 2241 capable of being coaxial with the first Z-direction guiding hole is provided on the movable bracket 224;

[0107] An A-material clamping handle 2210, rotatably installed in the middle on the movable bracket 224, and one end of the A-material clamping handle 2210 covers the A-material guiding groove 2241. When the first clamping portion moves in the Z direction, the other end of the A-material clamping handle 2210 can be pressed by the first roller 2211, so that the A-material clamping handle 2210 releases the A-material guiding groove 2241.

[0108] A preferred technical solution of this embodiment: The first pushing mechanism includes:

[0109] A second cylinder 229, fixed on the movable bracket 224, drivingly connected to a movable block, and the movable block is connected to two guide columns;

[0110] A first push rod 2212, one end of which is fixed on the movable block, and the other end of which is inserted into the A-material guiding groove 2241.

[0111] A preferred technical solution of this embodiment: In the B-material feeding mechanism 23:

[0112] The second rotation driving mechanism is fixed on a mounting seat 231. The mounting seat 231 is fixed on the bottom plate 11. There is a mounting block at its upper end. The second rotation driving mechanism includes a second rotation swing cylinder 234 fixed on one side surface of the mounting block, a second rotation arm 2311 rotatably installed at the side part of the mounting block, and a rotation bracket 2310 connected to the inner rotation end of the second rotation arm 2311 and extending to the other side surface of the mounting block. The second rotation swing cylinder 234 drivingly connects the outer rotation end of the second rotation arm 2311. The second clamping portion 238 is fixed at the outer end of the rotation bracket 2310 and rotates following the rotation bracket 2310;

[0113] A guide material block assembly 235 is fixed to the upper end of the mounting block. A second guide post 236 is fixed to the upper end of the guide material block assembly 235. The second guide post 236 has a second Z-direction guide hole. A second curved rod is also installed on one side of the guide material block assembly 235. A second roller 239 is installed at the lower end of the second curved rod;

[0114] The second clamping part 238 includes:

[0115] A fixed clamping block fixed to the side of the rotating bracket 2310. The fixed clamping block is provided with a B-material guide groove that can be coaxial with the second Z-direction guide hole;

[0116] A B-material clamping handle rotatably fixed to the fixed clamping block. One end of the B-material clamping handle covers the B-material guide groove. After the B-material clamping handle moves to the second roller 239, it can be pressed down by the second roller 239 so that the B-material clamping handle releases the B-material guide groove;

[0117] The second pushing mechanism includes a first X-axis linear cylinder 233 fixed to the mounting seat 231 and a second push rod 232 drivingly connected to the first X-axis linear cylinder 233. When the second clamping part 238 rotates to the X-axis direction, the second push rod 232 is coaxial with the B-material guide groove and the second push rod 232 can be pushed into the B-material guide groove.

[0118] A preferred technical solution of this embodiment: Two groups of limiters 237 are further provided on the mounting block. The two groups of limiters 237 are arranged at an angle to limit the rotation of the second rotating arm 2311 within a range of 90 degrees.

[0119] A preferred technical solution of this embodiment: In the B-material fixing mechanism 24:

[0120] The B-material welding part includes a B-material welding seat 243 fixed to the bottom plate 11, a welding bracket 249 installed at the top end of the B-material welding seat 243, a B-material conductive bracket 245 rotatably installed on the welding bracket 249, and a first lifting cylinder 241 fixed to the side of the welding bracket 249 and with its driving end connected to one end of the B-material conductive bracket 245;

[0121] A V-shaped bracket mounting seat is installed in a corner groove on one side of the welding bracket 249. A V-shaped bracket is installed on the V-shaped bracket mounting seat. The V-shaped bracket is provided with a first V-shaped groove for the B-material to enter. After being driven by the first lifting cylinder 241, the B-material conductive bracket 245 can be pressed down towards the first V-shaped groove;

[0122] A guide block 246 for receiving the B material 100 is further installed on the B material welding seat 243. The upper end of the guide block 246 has a second V-shaped groove, and the second V-shaped groove is coaxial with the first V-shaped groove;

[0123] The B material conductive support 245 is connected with a first power transmission cable 242;

[0124] The material pressing mechanism includes:

[0125] A third air cylinder 244 fixed to one side of the welding support 249;

[0126] A damping rod assembly movably installed on the B material welding seat 243 in the Y-axis direction. The damping rod 248 on the damping rod assembly is arranged in the Y direction, and its moving path can reach the upper side of the first V-shaped groove.

[0127] In a preferred technical solution of this embodiment: In the A material fixing mechanism 25, the XYZ adjusting mechanism includes:

[0128] A lower sliding seat 2513 fixed to the bottom plate 11. The upper part of the lower sliding seat 2513 has an inclined structure and a tenon part 25131 in the shape of a dovetail. The tenon part 25131 is in the X-axis direction;

[0129] An upper sliding seat 2514 slidably connected to the lower sliding seat 2513. The lower bottom surface of the upper sliding seat 2514 has a tenon groove 25241 matching the tenon part 25131. The tenon groove 25241 is an inclined structure in the shape of a dovetail groove. By moving the upper sliding seat 2514, the height of the welding point can be adjusted, and at the same time, when the upper sliding seat 2514 moves in the X direction, the X-axis position of the welding point can be adjusted;

[0130] A Y-axis adjusting part is arranged on the A material welding part, and the Y-axis position of the welding point is adjusted through a lead screw 2519.

[0131] In a preferred technical solution of this embodiment: On one side of the lower sliding seat 2513 facing the B material fixing mechanism 24, a buffer plate 259 is provided. The buffer plate 259 is rotatably connected to the lower sliding seat 2513, and a spring is installed inside it;

[0132] A positioning plate is further fixed to the side of the lower sliding seat 2513. The positioning plate extends upward to the upper sliding seat 2514, and an oblique adjustment hole 2511 is provided on the positioning plate. The position of the upper sliding seat 2514 is fixed by tightening an adjustment screw in the adjustment hole 2511;

[0133] The height between the lower sliding seat 2513 and the upper sliding seat 2514 is measured by a first dial indicator 2515;

[0134] The X-axis position of the upper sliding seat 2514 is measured by a micrometer 2516 which is arranged beside the lower sliding seat 2513 and fixed in the X direction.

[0135] A double-row guide rail 257 is provided at the top of the upper sliding seat 2514, and a slider 2512 is slidably connected on the double-row guide rail 257. An activity plate 252 is installed on the slider 2512.

[0136] One end of the upper sliding seat 2514, which is far away from the B material fixing mechanism 24, is provided with a second X-axis linear cylinder 251 through a cylinder seat. The second X-axis linear cylinder 251 is drivingly connected to the A material welding part, and the A material welding part is fixed on the activity plate 252.

[0137] The A material welding part includes:

[0138] A fixed block fixed on one side of the activity plate 252. The fixed block is drivingly connected to the second X-axis linear cylinder 251. An outer end of a driving rod 2516 of the second X-axis linear cylinder 251 is connected with a telescopic rod, and a spring 2517 is sleeved outside the telescopic rod.

[0139] A Y-direction moving block 2520, which is connected with the fixed block through a dovetail mortise and tenon joint. The Y-direction moving block 2520 can move in the Y-axis direction on the fixed block. A lead screw 2519 is screwed on the Y-direction moving block 2520. By rotating the lead screw 2519, the Y-direction moving block 2520 is driven to move in the Y-axis direction. The moving distance of the Y-direction moving block 2520 is measured by a second dial indicator.

[0140] An A material fixing bracket 254 is fixed on the front side of the Y-direction moving block 2520. One side of the A material fixing bracket 254 has a receiving groove.

[0141] A second lifting cylinder 2518 is fixed on one end of the A material fixing bracket 254 through a cylinder seat.

[0142] An A material conductive bracket 255 is rotatably installed on the upper end of the A material fixing bracket 254. One end of it is drivingly connected to the second lifting cylinder 2518. The A material conductive bracket 255 is also connected with a second power cable 253.

[0143] An A material pressing block 256 is installed in a side groove at the other end of the A material conductive bracket 255. The A material pressing block 256 is a regular polygonal column block, and different-sized fourth V-shaped grooves are provided on its each side.

[0144] An A material positioning seat 258 is fixed in the receiving groove, and its top end has a third V-shaped groove for the A material 200 to enter.

[0145] A preferred technical solution of this embodiment: The material receiving mechanism 26 includes:

[0146] A material taking and rotating part, the power part is installed on the lower plate surface of the bottom plate 11, and the power part is a fourth cylinder 261. The fourth cylinder 261 is drivingly connected to one end of a third rotating arm 262. A receiving chuck 2610 is installed at the outer end of the third rotating arm 262. The receiving chuck 2610 reciprocates between the welding point and the blanking station following the rotation of the third rotating arm 262;

[0147] A belt conveying part, which has a belt conveying line 264 and a power motor 265 for driving the belt on the belt conveying line 264 to rotate. A blanking port is provided at the feeding port of the belt conveying line 264. Pushing mechanisms 263 are arranged oppositely on the left and right sides of the blanking port. The pushing mechanism 263 includes a fifth cylinder 2631 installed on the upper side of one end of the belt conveying line 264 and a pushing block 2632 drivingly connected to the fifth cylinder 2631. A feeding groove 2633 is provided at the lower end of the pushing block 2632 for the welded product to enter. The pushing block 2632 can make the feeding groove reach the blanking port through the pushing of the fifth cylinder 2631;

[0148] A material guiding bridge 269 is inclinedly installed on the bottom plate 11 through a bracket, and its feeding end is close to the discharging port of the belt conveying line 264;

[0149] A finished product collecting part, which has a finished product collecting box 267 fixed on the bottom plate 11, a servo motor 266 installed at one end of the finished product collecting box 267, a conveyor belt arranged in the collecting box 267, and anti - stacking blocks 268 fixed on the conveyor belt. The servo motor 266 is drivingly connected to the conveyor belt. The discharging port of the material guiding bridge 269 is arranged at one end of the finished product collecting box 267, and an anti - material - dropping block close to the conveyor belt is fixed at the feeding end of the finished product collecting box 267;

[0150] A discharging pushing mechanism, which includes a push rod seat 2611 installed on the bottom plate 11, a double - row slide rail fixed at the top end of the push rod seat 2611, two groups of push rod fixing blocks 2613 slidably connected to the double - row slide rail, two top rods 2614 respectively fixed on the two groups of push rod fixing blocks 2613, and two groups of third X - axis linear cylinders 2612 installed at one end of the push rod seat 2611 and drivingly connected to the two groups of push rod fixing blocks 2613. The push rod seat 2611 has a guiding block installed at the end far from the third X - axis linear cylinder 2612, and two guiding holes are provided on the guiding block. The two top rods 2614 pass through the two guiding holes.

[0151] Embodiment 2:

[0152] The operating principle of the resistance welding equipment of the present invention is as follows:

[0153] The following A material 200 is the cutting edge part of the milling cutter, and the B material is the handle part of the milling cutter.

[0154] In the initial state, both the first clamping part and the second clamping part rotate to the Z-axis direction. At this time, the first roller 2211 presses one end of the A-material clamping handle 2210, so that the other end of the A-material clamping handle 2210 is loosened, so that the A material 200 can enter the A-material guiding groove 2241. The second roller 239 presses one end of the B-material clamping handle, so that the other end of the B-material clamping handle is loosened, so that the B material 100 can enter the B-material guiding groove.

[0155] Step 1: Place the A material in the small vibrating tray and the B material in the large vibrating tray, and adjust the feeding position of the A material, the feeding position of the B material, the welding position of the A material, and the welding position of the B material.

[0156] Step 2: Vibrate the A material through the small vibrating tray and send it to the first guiding column 2213 on the A-material feeding mechanism 22, and the first guiding column 2213 then sends the A material to the A-material guiding groove 2241.

[0157] Vibrate the B material through the large vibrating tray and send it to the second guiding column 236 of the B-material feeding mechanism 23, and the second guiding column 236 then sends the B material to the B-material guiding groove.

[0158] Step 3: The first rotation driving mechanism on the A-material feeding mechanism 22 drives the first clamping part to rotate 90 degrees, so that the first clamping and rotating part reaches the horizontal position. After the A-material clamping handle 2210 disengages from the first roller 2211, the A-material clamping handle 2210 clamps the A material 200, and the A material 200 is rotated to the X-axis direction;

[0159] Synchronously, the second rotation driving mechanism on the B-material feeding mechanism 23 drives the second clamping and rotating part to rotate 90 degrees, so that the second clamping and rotating part reaches the horizontal position. After the B-material clamping handle disengages from the second roller 239, the B-material clamping handle 239 clamps the B material 100, and the B material 100 is rotated to the X-axis direction.

[0160] Step 4: The first pushing mechanism pushes the A material to the A-material fixing mechanism 25, and the A-material fixing mechanism 25 clamps the A material.

[0161] The second pushing mechanism pushes the B material to the B-material fixing mechanism 24, and the B-material fixing mechanism 24 clamps the B material.

[0162] Step 5: The first pushing mechanism and the second pushing mechanism retract, and the first rotation driving mechanism and the second rotation driving mechanism reset.

[0163] Step 6, the X-axis power mechanism drives the welding part of Material A towards the welding part of Material B, causing Material A 200 and Material B 100 to abut. Due to the telescopic rod on the X-axis power mechanism and the spring 2517, it is avoided that Material A and Material B are broken. One end of Material A 200 at the fixed position is tightly positioned. When Material B and Material A are tightly abutted, Material B is prevented from quickly retreating through the damping rod 248 on the damping rod assembly, thereby preventing a gap between Material B and Material A.

[0164] Step 7, the second lifting cylinder 2518 drives one end of the conductive support 255 of Material A to rise, and the other end of the conductive support 255 of Material A to descend, enabling the circuit of Material A 200 to be conducted;

[0165] The first lifting cylinder 241 drives one end of the conductive support 245 of Material B to rise, and the other end of the conductive support 245 of Material B to descend, enabling the circuit of Material B 100 to be conducted. Since Material B 100 and Material A 200 are in contact connection, the circuit is conducted accordingly. Through the principle of resistance welding, the welding of Material B 100 and Material A 200 is completed.

[0166] Step 8, the first lifting cylinder 241 and the second lifting cylinder 2518 reset, and the fixing mechanism 25 of Material A resets. At this time, the welded finished product is clamped on the fixing mechanism 24 of Material B.

[0167] Step 9, the material taking and rotating part rotates to the welding station, the second pushing mechanism pushes the welded finished product into the material taking and rotating part, the second pushing mechanism resets, and the material taking and rotating part rotates with the welded finished product to one end of the belt conveying part.

[0168] Step 10, the discharging pushing mechanism pushes the welded finished product into the feeding trough 2633 of the belt conveying part. The fifth cylinder 2631 drives the pushing block 2632 to extend forward, causing the welded finished product to fall into the discharging opening. The belt conveyor line 264 transports the welded finished product to the guiding bridge 269, and finally guides it into the finished product collection part through the inclined guiding bridge 269.

[0169] Since the collected finished products are piling up more and more, the servo motor 266 intermittently drives the anti-stacking block 268 to move, causing the finished product collection cavity to slowly increase. If the anti-stacking block 268 is not set, the finished products will enter the collection box 267 in a disorderly manner, resulting in misaligned stacking of the finished products and being difficult to collect.

[0170] In summary, the resistance welding equipment of the present invention uses a double-station resistance welding mechanism and a set of material receiving mechanisms to realize the welding of milling cutters, improving the welding efficiency.

[0171] The shank and the cutting edge of the milling cutter are fed to the Z-axis direction through two vibrating bowls, and then the shank and the cutting edge are sent to the welding station through a rotating mechanism. The shank and the cutting edge are brought into contact by moving the welding part of the cutting edge. After the circuits on both sides are connected, the shank and the cutting edge are welded together. The present invention ingeniously uses two sets of rotating mechanisms to rotate the shank and the cutting edge by 90 degrees, achieving efficient feeding and improving the accuracy of the feeding position at the same time.

[0172] When the shank and the cutting edge are in contact, a damping rod assembly is provided at the welding part of the shank. The damping rod assembly prevents the shank from moving too fast and also prevents the problem that the shank retreats too fast during the contact process between the shank and the cutting edge, thereby avoiding the generation of gaps between the shank and the cutting edge.

[0173] The A-material fixing mechanism of the present invention manually adjusts the positions of the X, Y, and Z axes of the welding point of the cutting edge, rather than using an XYZ-axis driving mechanism for adjustment, reducing the occupied space of the A-material fixing mechanism.

[0174] The above are only the preferred embodiments of the present invention, and do not limit the patent scope of the present invention accordingly. Any equivalent structural or equivalent process transformation made by using the content of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, shall be equally included in the patent protection scope of the present invention.

Claims

1. A resistance welding device, comprising a frame (1) and a resistance welding unit (2), characterized in that, two sets of the resistance welding units (2) are provided, and the two sets of resistance welding units (2) are fixed on a bottom plate (11) inside the frame (1) and share a material receiving mechanism (26); the resistance welding unit (2) includes: a vibrating disk feeding device (21), having two vibrating disks, and the two vibrating disks respectively convey a pre-welded A material (200) and a pre-welded B material (100) through vibration; an A material feeding mechanism (22), the A material feeding mechanism (22) having a first clamping portion for receiving the A material (200) and capable of automatically releasing, a first rotation driving mechanism for driving the first clamping portion to rotate so that the A material rotates from the Z direction to the X direction, and a first pushing mechanism for pushing the A material in the X direction out of the first clamping portion; a B material feeding mechanism (23), the B material feeding mechanism (23) having a second clamping portion (238) for receiving the B material and capable of automatically releasing, a second rotation driving mechanism for driving the second clamping portion (238) to rotate so that the B material rotates from the Z direction to the X direction, and a second pushing mechanism for pushing the B material in the X direction out of the second clamping portion (238); a B material fixing mechanism (24), the B material fixing mechanism (24) receiving the B material pushed out by the B material feeding mechanism (23), having a fixed B material welding portion thereon and a material pressing mechanism for pressing the B material when the B material enters the B material welding portion; an A material fixing mechanism (25), the A material fixing mechanism (25) receiving the A material pushed out by the A material feeding mechanism (22), having an XYZ adjusting mechanism for adjusting the welding position of the A material, a movable A material welding portion, and an X-axis power mechanism for driving the A material welding portion to move in the X direction. The B material (100) of the B material welding portion and the A material (200) of the A material welding portion are coaxial after being fixed. After the X-axis power mechanism drives the A material to move, the A material and the B material are in contact connection at their ends and the A material and the B material are welded together by electrifying the A material welding portion and the B material welding portion.

2. The resistance welding device according to claim 1, characterized in that, the two vibrating disks of the vibrating disk feeding device (21) are arranged at a raised height through support columns, and the A material and the B material are in the Z direction when discharging through their respective feeding channels.

3. The resistance welding device according to claim 1, characterized in that, in the A material feeding mechanism (22): The first rotation driving mechanism is fixed on a vertical plate (221), and the vertical plate (221) is fixedly erected on the bottom plate (11). The first rotation driving mechanism includes a first rotation swing cylinder (228) fixed on one side surface of the vertical plate (221), a first rotation arm (226) rotatably mounted on the vertical plate (221), and a rotation shaft (227) connected to the inner rotation end of the first rotation arm (226) and extending to the other side surface of the vertical plate (221). The first rotation swing cylinder (228) is drivingly connected to the outer rotation end of the first rotation arm (226). The first clamping portion is fixed to the outer end of the rotation shaft (227) and rotates following the rotation shaft (227); A connecting rod (222) is fixed to the top end of the vertical plate (221). A first material guiding column (2213) for receiving material A is provided at the outer end of the connecting rod (222). The first material guiding column (2213) has a first Z-direction guiding hole. The connecting rod (222) is further connected to a first curved rod (223). A rotatable first roller (2211) is mounted on the lower side of the outer end of the first curved rod (223); The first clamping portion includes: A first cylinder fixing seat vertically fixed to the end of the rotation shaft (227); A first cylinder (225) fixed to the first cylinder fixing seat; A movable bracket (224) drivingly connected to the first cylinder (225) and moving along the side shell of the first cylinder (225). An A-material guiding groove (2241) capable of being coaxial with the first Z-direction guiding hole is provided on the movable bracket (224); An A-material clamping handle (2210) is rotatably mounted in the middle on the movable bracket (224). One end of the A-material clamping handle (2210) covers the A-material guiding groove (2241). When the first clamping portion moves in the Z direction, the other end of the A-material clamping handle (2210) can be pressed by the first roller (2211), so as to release the A-material guiding groove (2241) by the A-material clamping handle (2210).

4. A resistance welding device according to claim 3, characterized in that the first pushing mechanism includes: A second cylinder (229) fixed on the movable bracket (224), which is drivingly connected to a movable block, and the movable block is connected with two guide posts; A first push rod (2212) with one end fixed to the movable block and the other end inserted into the A-material guiding groove (2241).

5. A resistance welding device according to claim 1, characterized in that in the B-material feeding mechanism (23): The second rotation driving mechanism is fixed on a mounting base (231), the mounting base (231) is fixed on the bottom plate (11), an installation block is provided at the upper end thereof, the second rotation driving mechanism includes a second rotation swing cylinder (234) fixed on one side surface of the installation block, a second rotation arm (2311) rotatably installed at the side part of the installation block, and a rotation bracket (2310) connected to the inner rotation end of the second rotation arm (2311) and extending to the other side surface of the installation block. The second rotation swing cylinder (234) is drivingly connected to the outer rotation end of the second rotation arm (2311). The second clamping part (238) is fixed at the outer end of the rotation bracket (2310) and rotates along with the rotation bracket (2310). A material guiding block assembly (235) is fixed at the upper end of the installation block. A second material guiding column (236) is fixed at the upper end of the material guiding block assembly (235). The second material guiding column (236) has a second Z-direction guiding hole. A second curved rod is also installed on one side of the material guiding block assembly (235), and a second roller (239) is installed at the lower end of the second curved rod. The second clamping part (238) includes: A fixed clamping block fixed at the side part of the rotation bracket (2310), and the fixed clamping block is provided with a B-material guiding groove capable of being coaxial with the second Z-direction guiding hole. A B-material clamping handle rotatably fixed on the fixed clamping block. One end of the B-material clamping handle covers the B-material guiding groove. After the B-material clamping handle moves to the second roller (239), it can be pressed down by the second roller (239) so that the B-material clamping handle releases the B-material guiding groove. The second pushing mechanism includes a first X-axis linear cylinder (233) fixed on the mounting base (231) and a second push rod (232) drivingly connected to the first X-axis linear cylinder (233). When the second clamping part (238) rotates to the X-axis direction, the second push rod (232) is coaxial with the B-material guiding groove and the second push rod (232) can be pushed into the B-material guiding groove.

6. A resistance welding device according to claim 5, wherein, Two groups of limiters (237) are further arranged on the installation block. The two groups of limiters (237) are arranged at an angle to limit the rotation of the second rotation arm (2311) within a range of 90 degrees.

7. A resistance welding device according to claim 1, wherein, In the B-material fixing mechanism (24): The B-material welding part includes a B-material welding seat (243) fixed on the bottom plate (11), a welding bracket (249) installed at the top end of the B-material welding seat (243), a B-material conductive bracket (245) rotatably installed on the welding bracket (249), and a first lifting cylinder (241) fixed on the side of the welding bracket (249) and with its driving end connected to one end of the B-material conductive bracket (245). One side corner groove of the welding bracket (249) is provided with a V-shaped bracket mounting seat, on which a V-shaped bracket is mounted. The V-shaped bracket is provided with a first V-shaped groove for the B material to enter. After being driven by the first lifting cylinder (241), the B material conductive bracket (245) can be pressed down towards the first V-shaped groove. A material guiding block (246) for receiving the B material (100) is further mounted on the B material welding seat (243). The upper end of the material guiding block (246) has a second V-shaped groove, and the second V-shaped groove is coaxial with the first V-shaped groove. The B material conductive bracket (245) is connected with a first power transmission cable (242). The material pressing mechanism includes: A third cylinder (244) fixed on one side of the welding bracket (249); A damping rod assembly movably mounted on the B material welding seat (243) in the Y-axis direction. The damping rod (248) on the damping rod assembly is arranged in the Y direction, and its moving path can reach the upper side of the first V-shaped groove.

8. According to the resistance welding device described in claim 1, characterized in that In the A material fixing mechanism (25), the XYZ adjusting mechanism includes: A lower sliding seat (2513) fixed on the bottom plate (11). The upper part of the lower sliding seat (2513) has an inclined structure and a tenon part (25131) in the shape of a dovetail. The tenon part (25131) is in the X-axis direction; An upper sliding seat (2514) slidably connected with the lower sliding seat (2513). The lower bottom surface of the upper sliding seat (2514) has a tenon groove (25241) matching with the tenon part (25131). The tenon groove (25241) is an inclined structure in the shape of a dovetail groove. By moving the upper sliding seat (2514), the height of the welding point can be adjusted, and at the same time, when the upper sliding seat (2514) moves along the X direction, the X-axis position of the welding point can be adjusted; A Y-axis adjusting part is arranged on the A material welding part, and the Y-axis position of the welding point is adjusted through a lead screw (2519).

9. According to the resistance welding device described in claim 8, characterized in that One side of the lower sliding seat (2513) facing the B material fixing mechanism (24) is provided with a buffer plate (259). The buffer plate (259) is rotatably connected to the lower sliding seat (2513), and a spring is installed inside it; A positioning plate is further fixed on the side of the lower sliding seat (2513). The positioning plate extends upwards to the upper sliding seat (2514), and an inclined adjusting hole (2511) is arranged on the positioning plate. The position of the upper sliding seat (2514) is fixed by tightening an adjusting screw on the adjusting hole (2511); The height between the lower sliding seat (2513) and the upper sliding seat (2514) is measured by a first micrometer (2515); The X-axis position of the upper sliding seat (2514) is measured by a micrometer fixed in the X direction beside the lower sliding seat (2513); Double-row guide rails (257) are arranged at the top end of the upper sliding seat (2514). A slider (2512) is slidably connected on the double-row guide rails (257), and a movable plate (252) is mounted on the slider (2512); The upper sliding seat (2514), at one end far from the B material fixing mechanism (24), is provided with a second X-axis linear cylinder (251) through a cylinder seat. The second X-axis linear cylinder (251) is drivingly connected to the A material welding part, and the A material welding part is fixed on the movable plate (252). The A material welding part includes: A fixed block fixed on one side of the movable plate (252). The fixed block is drivingly connected to the second X-axis linear cylinder (251). The outer end of the driving rod (2516) of the second X-axis linear cylinder (251) is connected with a telescopic rod, and a spring (2517) is sleeved outside the telescopic rod. A Y-direction movable block (2520) is connected to the fixed block through a dovetail tenon and mortise connection. The Y-direction movable block (2520) can move in the Y-axis direction on the fixed block. The lead screw (2519) is screwed on the Y-direction movable block (2520). By rotating the lead screw (2519), the Y-direction movable block (2520) is driven to move in the Y-axis direction. The moving distance of the Y-direction movable block (2520) is measured by a second micrometer. An A material fixing bracket (254) is fixed on the front side of the Y-direction movable block (2520). One side of the A material fixing bracket (254) has a receiving groove. A second lifting cylinder (2518) is fixed at one end of the A material fixing bracket (254) through a cylinder seat. An A material conductive bracket (255) is rotatably installed at the upper end of the A material fixing bracket (254). One end of it is drivingly connected to the second lifting cylinder (2518), and the A material conductive bracket (255) is also connected with a second power cable (253). An A material pressing block (256) is installed in the side groove at the other end of the A material conductive bracket (255). The A material pressing block (256) is a regular polygonal column block, and different-sized fourth V-shaped grooves are provided on each of its sides. An A material positioning seat (258) is fixed in the receiving groove, and its top end has a third V-shaped groove for the A material (200) to enter.

10. According to the resistance welding device according to claim 1, characterized in that the material receiving mechanism (26) includes: A material taking and rotating part. The power part is installed on the lower plate surface of the bottom plate (11). The power part is a fourth cylinder (261). The fourth cylinder (261) is drivingly connected to one end of a third rotating arm (262). A material receiving chuck (2610) is installed at the outer end of the third rotating arm (262). The material receiving chuck (2610) reciprocates between the welding point and the blanking station following the rotation of the third rotating arm (262). The belt conveyor section has a belt conveyor line (264) and a power motor (265) that drives the belt on the belt conveyor line (264) to rotate. The feeding port of the belt conveyor line (264) is provided with a discharging port, and on the left and right sides of this discharging port, there are oppositely arranged pushing mechanisms (263). The pushing mechanism (263) includes a fifth cylinder (2631) installed on the upper side of one end of the belt conveyor line (264) and a pushing block (2632) that is drivingly connected to the fifth cylinder (2631). The lower end of the pushing block (2632) is provided with a feeding groove (2633) for the welded products to enter. The pushing block (2632) can make the feeding groove reach the discharging port through the pushing of the fifth cylinder (2631). The material guiding bridge (269) is inclinedly installed on the bottom plate (11) through a bracket, and its feeding end is close to the discharging port of the belt conveyor line (264). The finished product collection section has a finished product collection box (267) fixed on the bottom plate (11), a servo motor (266) installed at one end of the finished product collection box (267), a conveyor belt arranged in the collection box (267), and anti-stack blocks (268) fixed on the conveyor belt. The servo motor (266) is drivingly connected to the conveyor belt. The discharging port of the material guiding bridge (269) is arranged at one end of the finished product collection box (267), and an anti-material-falling block close to the conveyor belt is fixed at the feeding end of the finished product collection box (267). The discharging pushing mechanism includes a push rod seat (2611) installed on the bottom plate (11), a double-row slide rail fixed at the top end of the push rod seat (2611), two groups of push rod fixing blocks (2613) slidably connected to the double-row slide rail, two ejector rods (2614) respectively fixed on the two groups of push rod fixing blocks (2613), and two groups of third X-axis linear cylinders (2612) installed at one end of the push rod seat (2611) and drivingly connected to the two groups of push rod fixing blocks (2613). The push rod seat (2611) has a guiding block installed at the end far from the third X-axis linear cylinder (2612), and two guiding holes are provided on the guiding block. The two ejector rods (2614) pass through the two guiding holes.

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