A high-quality sheet metal welding system and welding method

Abstract

The invention discloses a high-quality sheet metal welding system and welding method, and relates to the technical field of sheet metal welding. The invention comprises an operating table, a welding unit, and a support frame, wherein a feeding mechanism is rotatably arranged on the support frame, a feeding block is fixedly arranged at the bottom of the feeding mechanism, four movable plates are slidably arranged at the bottom of the feeding block, a second compression spring is fixedly arranged between each movable plate and the feeding block, a grinding block is slidably arranged at the bottom of each movable plate, a fixed rod is rotatably arranged on the feeding block, and a plurality of adjusting rods for adjusting the position of the metal plate are rotatably arranged at the bottom of the fixed rod; the position of the metal plate is adjusted by opening the adjusting rod, and the metal plate can be prevented from rotating when the grinding block removes burrs; the rotating rod drives the grinding block to rotate and remove burrs when the rotating rod rotates; automatic feeding is realized when the rotating rod rotates, and the nut moves the grinding block downward to enter the hole of the metal plate to clamp the metal plate, so that the subsequent metal plate can be conveniently welded as the screw rotates.

Description

Technical Field

[0001] The invention relates to the technical field of sheet metal welding, and in particular to a high-quality sheet metal welding system and a welding method. Background Art

[0002] Sheet metal parts are products processed by sheet metal technology. We can't live without sheet metal parts in our lives. Sheet metal parts are made by laser cutting, heavy processing, metal bonding, metal drawing, plasma cutting, precision welding, roll forming, sheet metal bending, die forging, water jet cutting, precision welding and other processes.

[0003] In the process of sheet metal processing, it is often necessary to weld various sheet metal parts. Welding refers to the process in which the workpiece and the solder melt to form a molten area, and the molten pool cools and solidifies to form a connection between the materials. In this process, it is usually necessary to apply pressure and align the welding positions of the two workpieces to be welded together, and use a clamp to prevent the two workpieces from offsetting during welding;

[0004] In the production process of some sheet metal parts, it is necessary to weld the metal plate and the nut together. Before welding, a hole matching the inner circle of the nut is drilled on the metal plate, and then the inner circle of the nut is aligned with the drilled hole, and a circle of the nut is welded by a welding device. The existing nut welding is usually done manually, but burrs will be formed around the holes in the metal plate when drilling. If the burrs are not removed, the inner circle of the nut will not be aligned with the drilled hole on the metal plate when the nut is placed. There will be a gap between the nut and the metal plate during welding, which can easily lead to welding failure. In addition, the failure of the inner circle of the nut to align with the drilled hole of the sheet metal will also affect the subsequent installation of bolts and the processing quality of the sheet metal. Summary of the invention

[0005] The object of the present invention is to provide a high-quality sheet metal welding system and welding method to solve the above-mentioned deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a high-quality sheet metal welding system, including an operating table and a welding unit, a support frame is fixedly arranged on the operating table, a feeding mechanism is rotatably arranged on the support frame, a feeding block is fixedly arranged at the bottom of the feeding mechanism, four movable plates are slidably arranged at the bottom of the feeding block, a second compression spring is fixedly arranged between each movable plate and the feeding block, a grinding block is slidably arranged at the bottom of each movable plate, a fixed rod is rotatably arranged on the feeding block, and a plurality of adjusting rods for adjusting the position of the metal plate are rotatably arranged at the bottom of the fixed rod; a driving assembly is arranged on the supporting frame, the driving assembly drives the feeding assembly to feed while driving the grinding block to remove burrs on the metal plate, and drives the adjusting rod to squeeze the inner wall of the drilled hole of the metal plate.

[0007] Preferably, a connecting rod is fixedly provided on each grinding block, each connecting rod is slidingly connected to each movable plate in a one-to-one correspondence, and a first compression spring is fixedly provided between each movable plate and each grinding block in a one-to-one correspondence.

[0008] Preferably, a lifting ring is slidably provided on one end of the fixed rod close to the grinding block, and a sliding rod is slidably provided on one end of each grinding block close to the fixed rod. The end of each sliding rod away from the grinding block is rotatably connected to the lifting ring, and a plurality of pull rods are fixedly provided at the bottom of the lifting ring, and the ends of each pull rod away from the lifting ring are rotatably provided in the middle of each adjusting rod in a one-to-one manner.

[0009] Preferably, the unloading mechanism includes a rotating disk rotatably arranged on a supporting frame, a first material storage plate and a second material storage plate are slidably arranged at the bottom of the rotating disk, a screw is rotatably arranged on the rotating disk, and a locking mechanism for controlling the status of the first material storage plate and the second material storage plate is arranged on the rotating disk.

[0010] Preferably, the driving assembly includes a third bevel gear fixedly arranged at the end of the screw away from the grinding block, a rotating rod is rotatably arranged on the support frame, a first bevel gear and a second bevel gear are slidably arranged on the rotating rod, and a synchronization rod is fixedly arranged between the first bevel gear and the second bevel gear.

[0011] Preferably, a reciprocating spiral groove is provided on the outer circumference of the rotating rod, a transposition block is slidably provided on the rotating rod, an abutment ball adapted to the reciprocating spiral groove is fixedly provided in the transposition block, and a third spring is fixedly provided between the transposition block and the first bevel gear.

[0012] Preferably, the locking mechanism includes a plurality of second locking columns fixedly arranged on the support frame, a connecting ring fixedly arranged on the screw rod, a plurality of first locking columns fixedly arranged on the connecting ring, a locking disk slidably arranged on the rotating disk, two locking rods fixedly arranged on the locking disk, and a plurality of second springs fixedly arranged between the rotating disk and the locking disk.

[0013] Preferably, an abutment ring is fixedly provided on the clamping disk, and an abutment plate is fixedly provided on the bottom of the transposition block.

[0014] Preferably, two telescopic rods are fixedly provided at the bottom of the rotating disk, both telescopic rods are fixedly connected to the first storage plate, two first springs are fixedly provided between the first storage plate and the rotating disk, two limit rods are inserted on the first storage plate, and bolts are provided on the second storage plate.

[0015] Preferably, a high-quality sheet metal welding method is implemented by the above-mentioned high-quality sheet metal welding system, comprising the following steps:

[0016] S1: Screen the hexagonal nuts and stack them vertically with the thread grooves of the hexagonal nuts aligned end to end, and then place the stacked hexagonal nuts on the first storage plate and the second storage plate to complete the loading;

[0017] S2: lift the metal plate so that the adjusting rod is inserted into the hole of the metal plate to adjust the position of the metal plate, and make the metal plate squeeze the grinding block;

[0018] S3: Rotate the rotating rod, so that the rotating rod first drives the grinding block to rotate to grind the burrs of the metal plate, then moves the hexagonal nut downward and squeezes it on the metal plate to complete the material removal, and then drives the metal plate to rotate for welding;

[0019] S4: Remove the welded metal plate.

[0020] In the above technical scheme, the present invention provides a high-quality sheet metal welding system and welding method, which have the following beneficial effects: 1. By lifting the metal plate and squeezing the grinding block, the adjusting rod can be opened to adjust the position of the metal plate so that the hole of the metal plate is completely aligned with the inner circle of the hexagonal nut, and the metal plate can be prevented from rotating when the grinding block removes burrs, thereby increasing the grinding efficiency; 2. By switching the rotation direction of the screw when the rotating rod rotates, the grinding block is driven to rotate to remove burrs on the metal plate; 3. When the rotating rod rotates, the connection state of the clamping disk can be changed by moving the displacement block, thereby facilitating the movement of the hexagonal nut and realizing automatic unloading. In the process of the nut moving downward, the movable plate can be squeezed to make the grinding block enter the hole of the metal plate to clamp the metal plate, so that the subsequent metal plates can be conveniently welded as the screw rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0022] Figure 1 A schematic diagram of the overall structure provided for an embodiment of the present invention;

[0023] Figure 2 A schematic diagram of the structure of an abutment ring provided in an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the structure of a drive assembly provided by an embodiment of the present invention;

[0025] Figure 4 A schematic diagram of the structure of an abutment ball provided by an embodiment of the present invention;

[0026] Figure 5 A schematic structural diagram of a first material storage plate provided in an embodiment of the present invention;

[0027] Figure 6 A schematic diagram of the structure of a mobile plate provided in an embodiment of the present invention;

[0028] Figure 7 A schematic structural diagram of a clamping ring provided in an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 1. Operating table; 2. Welding gun; 3. Hydraulic cylinder; 4. Lifting plate; 5. Metal plate; 6. Support frame; 7. Servo motor; 11. First material storage plate; 12. Second material storage plate; 13. Telescopic rod; 14. First spring; 15. Limit rod; 16. Bolt; 21. Rotating plate; 22. Snap plate; 23. Second spring; 24. Abutment ring; 25. Snap rod; 26. Connecting ring; 27. First snap column; 28. Second snap column; 30. Rotating rod; 31. Reciprocating spiral Groove; 32, third spring; 33, first bevel gear; 34, second bevel gear; 35, transposition block; 36, abutment plate; 37, abutment ball; 38, limit ring; 39, synchronization rod; 41, third bevel gear; 42, screw rod; 43, hexagonal nut; 44, blanking block; 45, moving plate; 46, connecting rod; 47, first compression spring; 48, grinding block; 49, second compression spring; 51, fixing rod; 52, adjusting rod; 53, lifting ring; 54, sliding rod; 55, pulling rod. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0032] See also Figure 1-7A high-quality sheet metal welding system includes an operating table 1 and a welding unit. A support frame 6 is fixedly arranged on the operating table 1, and a feeding mechanism is rotatably arranged on the support frame 6. A feeding block 44 is fixedly arranged at the bottom of the feeding mechanism, and four movable plates 45 are slidably arranged at the bottom of the feeding block 44. A second compression spring 49 is fixedly arranged between each movable plate 45 and the feeding block 44, and a grinding block 48 is slidably arranged at the bottom of each movable plate 45. A fixed rod 51 is rotatably arranged on the feeding block 44, and a plurality of adjusting rods 52 for adjusting the position of the metal plate 5 are rotatably arranged at the bottom of the fixed rod 51; a driving component is arranged on the supporting frame 6, and the driving component drives the feeding component to feed while driving the grinding block 48 to remove the burrs on the metal plate 5, and drives the adjusting rod 52 to squeeze The inner wall of the hole is drilled in the press metal plate 5; the welding unit includes a welding gun 2, which can be moved on the operating table 1, and the support frame 6 is used to support the unloading mechanism. The unloading block 44 is fixedly arranged at the bottom of the unloading mechanism, and each movable plate 45 is evenly slidably arranged on the unloading block 44 and slides along the radial direction of the unloading block 44. The height of the unloading block 44 is greater than the height of the hexagonal nut 43. The number of adjusting rods 52 is four, and they are rotatably arranged at the bottom of the fixed rod 51. The unloading block 44 is a truncated cone, and the diameter of the upper side of the unloading block 44 is smaller than the inner diameter of the hexagonal nut 43. The diameter of the bottom of the unloading block 44 is adapted to the inner diameter of the hexagonal nut 43. The side of each movable plate 45 and each grinding block 48 away from the fixed rod 51 is set to an inclined surface, and the inclined surface of the movable plate 45 faces upward, and the grinding block The inclined surface of 48 faces downward, and one end of each movable plate 45 away from the fixed rod 51 is aligned with the other end of the corresponding grinding block 48 away from the fixed rod 51. When in use, first place a plurality of hexagonal nuts 43 in the blanking mechanism, and make the starting and ending positions of the threads of each nut consistent in the vertical direction, place the welded metal plate 5 on the operating table 1, lift the metal plate 5, insert each adjusting rod 52 into the hole on the metal plate 5, continue to move the metal plate 5 upward, the edge of the hole on the metal plate 5 abuts against the grinding block 48, as the metal plate 5 continues to move upward, the grinding block 48 also moves upward, and when the grinding block 48 moves upward, it drives each adjusting rod 52 to open, and the inner wall of the hole of the metal plate 5 is squeezed by the four adjusting rods 52 so that the hole of the metal plate 5 is completely aligned with the blanking block 44. The end of each adjusting rod 52 away from the fixed rod 51 is provided with vertical lines (not marked in the figure) for increasing friction. When each adjusting rod 52 is in close contact with the inner diameter of the metal plate 5, the grinding block 48 no longer moves up. At this time, the feeding mechanism is driven to rotate by the driving member. When the feeding mechanism rotates, it drives the grinding block 48 to rotate. When the grinding block 48 rotates, the burrs on the edges of the holes of the metal plate 5 can be ground. Since the fixed rod 51 is fixed, when the grinding block 48 rotates around the fixed rod 51, the metal plate 5 will not rotate with the grinding block 48 through the adjusting rods 52, so that the grinding can be carried out smoothly. When the burr grinding is completed, the driving component drives the feeding mechanism to reverse. When the feeding mechanism reverses, the hexagonal nuts 43 inside it move downward.As the feeding mechanism turns over, the hexagonal nut 43 at the bottom falls on the feeding block 44, and continues to move downward to squeeze each movable plate 45, so that each movable plate 45 slides into the feeding block 44. When each movable plate 45 moves, it drives the corresponding grinding block 48 to move inward. When the bottom hexagonal nut 43 completely squeezes each movable plate 45 into the feeding block 44, the bottom side of each grinding block 48 no longer abuts against the metal plate 5. At this time, each grinding block 48 moves downward in the hole of the metal plate 5, and one end of each grinding block 48 away from the fixing rod 51 abuts against the metal plate 5. The inner wall of the hole of the metal plate 5 is abutted, thereby preventing the aligned metal plate 5 from moving. As the grinding block 48 moves downward, each adjustment rod 52 also contracts. As the feeding mechanism reverses, the hexagonal nut 43 at the bottom is squeezed on the metal plate 5. At this time, the driving component drives the feeding mechanism to rotate forward again. When the feeding mechanism rotates forward, the inner wall of the hole of the metal plate 5 is squeezed by each grinding block 48 to drive the metal plate 5 and the hexagonal nut 43 to rotate together. At this time, the hexagonal nut 43 can be welded for one circle through the welding gun. When the welding is completed, the metal plate 5 is removed.

[0033] Furthermore, each grinding block 48 is fixedly provided with a connecting rod 46, and each connecting rod 46 is slidably connected with each movable plate 45 in a one-to-one manner, and each movable plate 45 and each grinding block 48 are fixedly provided with a one-to-one manner. Each connecting rod 46 slides in each movable plate 45 in a one-to-one manner. When the metal plate 5 is lifted so that each grinding block 48 abuts against the metal plate 5 and drives the grinding block 48 to move upward, each first compression spring 47 is compressed. At this time, each grinding block 48 has a downward pressure. As the feeding mechanism rotates, the grinding block 48 can grind away the burrs around the holes of the metal plate 5 through the downward pressure. The bottoms of two grinding blocks 48 have inclined protrusions (not shown in the figure). When the grinding block 48 rotates, the inclined protrusions can sweep out the burrs and debris from around the holes, thereby preventing the burrs and debris from causing the hexagonal nut 43 to abut against the metal plate 5 to cause When the hexagonal nut 43 squeezes each movable plate 45, each second compression spring 49 is compressed. At this time, the corresponding end of the movable plate 45 is abutted against the inner wall of the hexagonal nut 43 through the second compression spring 49. When the movable plate 45 is retracted into the blanking block 44, the grinding block 48 is moved by the connecting rod 46. When the grinding block 48 moves into the hole of the metal plate 5, each grinding block 48 is moved downward by the first compression spring 47. When each grinding block 48 moves downward, each adjusting rod 52 is retracted, so that the metal plate 5 can be rotated with the grinding block 48 subsequently. During welding, the cooperation of the adjusting rod 52 and the grinding block 48 can not only remove burrs from the metal plate 5, but also adjust and limit the position of the metal plate 5. There is no need to use a separate clamp. When the metal plate 5 and the hexagonal nut 43 are welded, the metal plate 5 is removed. At this time, the corresponding movable plate 45 is returned to the initial position again through each second compression spring 49.

[0034] Furthermore, a lifting ring 53 is slidably provided at one end of the fixed rod 51 close to the grinding block 48, and a sliding rod 54 is slidably provided at one end of each grinding block 48 close to the fixed rod 51. One end of each sliding rod 54 away from the grinding block 48 is rotatably connected to the lifting ring 53. A plurality of pull rods 55 are fixedly provided at the bottom of the lifting ring 53, and one end of each pull rod 55 away from the lifting ring 53 is rotatably provided in the middle part of each adjusting rod 52 in a one-to-one manner; when the grinding block 48 moves upward, the lifting ring 53 is driven to move up and down by each sliding rod 54, and when the lifting ring 53 moves up and down, each pull rod 55 is driven to move up and down. When the pull rod 55 moves up and down, it drives the adjusting rod 52 to open or contract, thereby squeezing, limiting or relaxing the metal plate 5.

[0035] In another embodiment of the present invention: the unloading mechanism includes a rotating disk 21 rotatably arranged on the support frame 6, a first material storage plate 11 and a second material storage plate 12 are slidably arranged at the bottom of the rotating disk 21, a screw 42 is rotatably arranged on the rotating disk 21, and a clamping mechanism for controlling the state of the first material storage plate 11 and the second material storage plate 12 is arranged on the rotating disk 21; the first material storage plate 11 and the second material storage plate 12 are symmetrically arranged, and when the first material storage plate 11 and the second material storage plate 12 are closed, the inside of the two has a hexagonal hole that matches the outer edge of the hexagonal nut 43, the first material storage plate 11 and the second material storage plate 12 are rotatably connected, when the hexagonal nut 43 needs to be placed between the first material storage plate 11 and the second material storage plate 12, the second material storage plate 12 is opened, the screw 42 is adapted to the hexagonal nut 43, and a plurality of hexagonal nuts 43 with aligned threads are placed on the first material storage plate 11 and the second material storage plate 12, then rotate the bolt 16 and fix the rotating disk 21. When the bolt 16 rotates, it is threadedly connected with each hexagonal nut 43 and drives each hexagonal nut 43 to move up in sequence, so that loading can be completed. When it is necessary to grind the burrs on the edge of the hole of the metal plate 5, the rotating disk 21 is fixedly connected with the screw rod 42 through the locking mechanism. At this time, the rotation of the screw rod 42 can drive each grinding block 48 to rotate, but will not move the hexagonal nut 43 downward. When the burrs of the metal plate 5 are polished, the locking mechanism fixes the rotating disk 21 with the support plate. At this time, the screw rod 42 is reversed, so that each hexagonal nut 43 moves downward, thereby completing the unloading. When the bottom hexagonal nut 43 separates from the screw rod 42, it will fall on the unloading block 44. The nut on the nut falling on the unloading block 44 moves downward, which can make the bottom nut tightly abut against the metal plate 5, thereby facilitating welding.

[0036] In another embodiment of the present invention, the driving assembly includes a third bevel gear 41 fixedly arranged at one end of the screw 42 away from the grinding block 48, a rotating rod 30 is rotatably arranged on the support frame 6, a first bevel gear 33 and a second bevel gear 34 are slidably arranged on the rotating rod 30, and a synchronization rod 39 is fixedly arranged between the first bevel gear 33 and the second bevel gear 34; the third bevel gear 41 can mesh with the first bevel gear 33 and the second bevel gear 34, such as Figure 2 As shown, when it is necessary to grind the burrs of the metal plate 5, the second bevel gear 34 is moved so that the second bevel gear 34 meshes with the third bevel gear 41. At this time, the first bevel gear 33 does not contact the third bevel gear 41, and the rotating rod 30 is rotated. When the rotating rod 30 rotates, the third bevel gear 41 is driven to rotate through the second bevel gear 34, thereby rotating the screw 42. At this time, the rotating disk 21 is fixedly connected to the screw 42, so that the metal plate 5 is ground. When the grinding is completed, the second bevel gear 34 is moved so that the first bevel gear 33 meshes with the third bevel gear 41, and the rotation continues. The rotating rod 30 drives the screw rod 42 to reverse through the first bevel gear 33 when the rotating rod 30 rotates. At this time, the rotating disk 21 is fixedly connected to the support frame 6. When the screw rod 42 rotates, each hexagonal nut 43 will not rotate due to the restriction of the first storage plate 11 and the second storage plate 12, so that each hexagonal nut 43 moves downward, and the fixed rod 51 penetrates the screw rod 42 and emerges from the top of the screw rod 42. The top of the fixed rod 51 does not contact the rotating rod 30. The top of the fixed rod 51 is fixedly connected to the support frame 6, and the first bevel gear 33 and the second bevel gear 34 move synchronously through the synchronization rod 39.

[0037] Specifically, a reciprocating spiral groove 31 is provided on the outer circumference of the rotating rod 30, a transposition block 35 is slidably provided on the rotating rod 30, an abutment ball 37 adapted to the reciprocating spiral groove 31 is fixedly provided in the transposition block 35, and a third spring 32 is fixedly provided between the transposition block 35 and the first bevel gear 33; a servo motor 7 is fixedly provided on the support frame 6 or the third stem, and the output end of the servo motor 7 is fixedly connected to the rotating rod 30, and the rotating rod 30 is driven to rotate by the servo motor 7. When the rotating rod 30 rotates, the cooperation between the reciprocating spiral groove 31 and the abutment ball 37 drives the transposition block 35 to move back and forth, such as Figure 3As shown, in the initial state, the transposition block 35 is at the rightmost end of the reciprocating spiral groove 31, at which time the third spring 32 is extended, and the second bevel gear 34 is meshed with the third bevel gear 41. At this time, the metal plate 5 is lifted to allow the adjusting rod 52 to be inserted into the hole of the metal plate 5, and then the servo motor 7 is started. The servo motor 7 drives the rotating rod 30 to rotate, and the transposition block 35 moves to the left through the reciprocating spiral groove 31. At this time, the rotating rod 30 drives the screw 42 to rotate through the second bevel gear 34 to grind the metal plate 5. When the transposition block 35 moves to the middle position of the reciprocating spiral groove 31, the grinding is completed, and the third spring 32 no longer extends. As the transposition block 35 moves from the middle of the reciprocating spiral groove 31 to the left end and then from the left end to the middle During the process, the third spring 32 is compressed, and the first bevel gear 33 is meshed with the second bevel gear 34. At this time, the screw 42 is reversed, so that the hexagonal nuts 43 in the first storage plate 11 and the second storage plate 12 move downward to complete the unloading. When the transposition block 35 moves to the middle of the reciprocating spiral groove 31 again, the third spring 32 is no longer compressed. As the transposition block 35 moves from the middle to the right end of the reciprocating spiral groove 31, the second bevel gear 34 is meshed with the third bevel gear 41 again. At this time, the grinding block 48 abuts against the inner wall of the hole of the metal plate 5, so that the metal plate 5 and the hexagonal nut 43 move and rotate when the screw 42 rotates. At this time, the hexagonal nut 43 is welded to the metal plate 5 by welding.

[0038] Furthermore, the clamping mechanism includes a plurality of second clamping posts 28 fixedly arranged on the support frame 6, a connecting ring 26 fixedly arranged on the screw rod 42, a plurality of first clamping posts 27 fixedly arranged on the connecting ring 26, a clamping disc 22 slidably arranged on the rotating disc 21, two clamping rods 25 fixedly arranged on the clamping disc 22, and a plurality of second springs 23 fixedly arranged between the rotating disc 21 and the clamping disc 22; the clamping rod 25 penetrates the clamping disc 22 and extends from the inside and outside of the clamping disc 22, and the two clamping rods 25 extend from the inside and outside of the clamping disc 22. The clamping rods 25 are symmetrically arranged, the clamping disc 22 is on the upper side of the rotating disc 21, and the connecting ring 26 is on the upper side of the clamping disc 22. In the initial state, the clamping disc 22 is moved upward by each second spring 23, so that the two clamping rods 25 on the clamping disc 22 are clamped with the first clamping column 27 on the connecting ring 26. At this time, the second bevel gear 34 drives the screw 42 to rotate, and the screw 42 drives the rotating disc 21 and the first storage plate 11 and the second storage plate 12 to rotate when rotating, so as to complete the grinding. When the first bevel gear 33 is meshed with the third bevel gear 41, the clamping disc 22 is pressed down. At this time, each clamping rod 25 is clamped with the second clamping column 28 on the support frame 6, and the rotation is fixed. The first bevel gear 33 drives the screw 42 to reverse, so that the hexagonal nut 43 moves down to complete the unloading.

[0039] Furthermore, an abutment ring 24 is fixedly provided on the clamping disk 22, and an abutment plate 36 is fixedly provided on the bottom of the displacement block 35; the side of the abutment plate 36 close to the abutment ring 24 is set as an inclined surface, and when the displacement block 35 moves to the left from the middle of the reciprocating spiral groove 31, the abutment ring 24 is squeezed downward by the abutment plate 36, so that the clamping rod 25 is clamped with the second clamping column 28, and when the displacement block 35 moves from the left end to the middle of the reciprocating spiral groove 31, the abutment plate 36 is separated from the abutment ring 24, and at this time, the clamping rod 25 is clamped with the first clamping column 27 again through the second spring 23.

[0040] In another embodiment of the present invention, two telescopic rods 13 are fixedly arranged at the bottom of the rotating disk 21, and the two telescopic rods 13 are fixedly connected to the first material storage plate 11, and two first springs 14 are fixedly arranged between the first material storage plate 11 and the rotating disk 21, and two limit rods 15 are inserted on the first material storage plate 11, and a bolt 16 is arranged on the second material storage plate 12; a thread groove is opened at one end of the rotating rod 30 away from the servo motor 7, and a limit ring 38 threadedly connected to the thread groove is provided, the first material storage plate 11 is rotatably connected to the second material storage plate 12, and the first material storage plate 11 is slidably connected to the rotating disk 21 through the two telescopic rods 13, and the first material storage plate 11 is connected to the rotating disk 21 through the two telescopic rods 13. The springs 14 are sleeved on the outer circumference of each telescopic rod 13 in a one-to-one correspondence, and the first storage plate 11 and the second storage plate 12 can be fixedly connected by the bolts 16. When the hexagonal nut 43 needs to be placed between the first storage plate 11 and the second storage plate 12, the bolts 16 are unscrewed, and the second storage plate 12 can rotate on the first storage plate 11. Then, the two limiting rods 15 are inserted into the first storage plate 11, and the first storage plate 11 is pulled down, and multiple hexagonal nuts 43 with aligned thread positions are placed on the two limiting rods 15, and then the first storage plate 11 and the second storage plate 12 are closed and the bolts 16 are tightened. At this time, the second storage plate 12 is loosened. The first material storage plate 11 is opened, and the first material storage plate 11 moves upward through each first spring 14, the screw rod 42 abuts against the hexagonal nut 43 at the upper end, and then the clamping plate 22 is pressed downward to make the clamping rod 25 always clamped with the second clamping column 28, and the limiting ring 38 is rotated to squeeze the second bevel gear 34 so that the second bevel gear 34 is always meshed with the second bevel gear 34. At this time, the servo motor 7 is started, and the servo motor 7 drives the screw 42 to rotate, so that the hexagonal screw rod 42 between the first material storage plate 11 and the second material storage plate 12 is moved up in turn and threadedly connected with the screw rod 42. When each hexagonal nut 43 moves up to a certain height, the limiting ring is reversed. 38 releases the second bevel gear 34 and the clamping plate 22. A lifting plate 4 for placing the metal plate 5 is slidably set on the operating table 1. Two hydraulic cylinders 3 are fixedly set on the operating table 1. The ends of each hydraulic cylinder 3 are fixedly connected to the lifting plate 4. A through hole is opened on the lifting plate 4. When in use, the metal plate 5 to be welded with the hexagonal nut 43 is placed on the lifting plate 4 and the position is adjusted appropriately. Then, the hydraulic cylinder 3 is started to move the lifting plate 4 upward through the hydraulic cylinder 3, and each adjusting rod 52 is inserted into the hole of the metal plate 5 and tightly abuts against the inner wall of the hole of the metal plate 5. After the welding is completed, the hydraulic cylinder 3 drives the lifting plate 4 to move downward.

[0041] A high-quality sheet metal welding method is implemented by the above-mentioned high-quality sheet metal welding system, comprising the following steps;

[0042] S1: Screen the hexagonal nuts 43 and stack them vertically with the thread grooves of the hexagonal nuts 43 aligned end to end, and then place the stacked hexagonal nuts 43 on the first storage plate 11 and the second storage plate 12 to complete the loading;

[0043] S2: lifting the metal plate 5 so that the adjusting rod 52 is inserted into the hole of the metal plate 5 to adjust the position of the metal plate 5 and make the metal plate 5 squeeze the grinding block 48;

[0044] S3: Rotate the rotating rod 30, so that the rotating rod 30 first drives the grinding block 48 to rotate to grind the burrs of the metal plate 5, then move the hexagonal nut 43 downward and squeeze it on the metal plate 5 to complete the material cutting, and then drive the metal plate 5 to rotate for welding;

[0045] S4: Remove the welded metal plate 5.

[0046] Working principle: place the metal plate 5 on the lifting plate 4, then start the hydraulic cylinder 3 to lift the metal plate 5 and squeeze the rod grinding block 48, the grinding block 48 is squeezed and moves upward, and each adjusting rod 52 is opened to squeeze the inner wall of the hole of the metal plate 5, so as to adjust the position of the metal plate 5 so that the hole of the metal plate 5 is completely aligned with the inner circle of the hexagonal nut 43. In the initial state, the transposition block 35 is at the rightmost end of the reciprocating spiral groove 31, and then the servo motor 7 is started to drive the rotating rod 30 to rotate, as shown in FIG. Figure 3 As shown, the transposition block 35 starts to move from right to left. At this time, the second bevel gear 34 is meshed with the third bevel gear 41, the third spring 32 is in an extended state, the clamping rod 25 is clamped with the first clamping column 27, and the rotation of the rotating rod 30 drives the screw rod 42 and the rotating disk 21 to rotate together, so that the burrs around the holes of the metal plate 5 are polished by the grinding block 48. At this time, the hexagonal nuts 43 will not move. When the transposition block 35 moves to the left to the middle of the reciprocating spiral groove 31, the abutment plate 36 gradually abuts against the abutment ring 24 and presses down each clamping rod 25 to clamp with the second clamping column 28. At this time, the rotating disk 21 will not rotate, and the first bevel gear 33 is meshed with the third bevel gear 41. At this time, the rotating rod 30 drives The screw rod 42 rotates to make each hexagonal nut 43 move down to complete the unloading and squeeze the movable plate 45 to release the limit of the metal plate 5. When the transposition block 35 moves from the left end of the reciprocating spiral groove 31 to the middle, the unloading is completed, the abutment plate 36 and the abutment ring 24 are separated, and the clamping rod 25 is clamped with the first clamping column 27. As the rotating rod 30 continues to move to the right, the second bevel gear 34 is meshed with the third bevel gear 41 again. At this time, the metal plate 5 and the hexagonal nut 43 are driven to rotate together through the grinding block 48, and the welding gun is started to weld the hexagonal nut 43 and the metal plate 5 together. When the transposition block 35 returns to the rightmost end of the reciprocating spiral groove 31 again, each hydraulic cylinder 3 moves down and the welded metal plate 5 is removed.

[0047] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A high-quality sheet metal welding system, comprising an operating table (1) and a welding unit, characterized in that: A support frame (6) is fixedly arranged on the operating table (1), a material discharge mechanism is rotatably arranged on the support frame (6), a material discharge block (44) is fixedly arranged at the bottom of the material discharge mechanism, four movable plates (45) are slidably arranged at the bottom of the material discharge block (44), a second compression spring (49) is fixedly arranged between each movable plate (45) and the material discharge block (44), a grinding block (48) is slidably arranged at the bottom of each movable plate (45), a fixed rod (51) is rotatably arranged on the material discharge block (44), and a plurality of adjustment rods (52) for adjusting the position of the metal plate (5) are rotatably arranged at the bottom of the fixed rod (51); A driving assembly, which is arranged on the support frame (6), wherein the driving assembly drives the blanking assembly to perform blanking and at the same time drives the grinding block (48) to remove burrs on the metal plate (5), and drives the adjusting rod (52) to squeeze the inner wall of the drill hole of the metal plate (5); A connecting rod (46) is fixedly provided on each of the grinding blocks (48), each of the connecting rods (46) is slidably connected to each of the movable plates (45) in a one-to-one correspondence, and a first compression spring (47) is fixedly provided between each of the movable plates (45) and each of the grinding blocks (48) in a one-to-one correspondence; A lifting ring (53) is slidably provided at one end of the fixed rod (51) close to the grinding block (48), and a sliding rod (54) is slidably provided at one end of each grinding block (48) close to the fixed rod (51). One end of each sliding rod (54) away from the grinding block (48) is rotatably connected to the lifting ring (53). A plurality of pull rods (55) are fixedly provided at the bottom of the lifting ring (53), and one end of each pull rod (55) away from the lifting ring (53) is rotatably provided in a one-to-one correspondence at the middle of each adjusting rod (52).

2. A high-quality sheet metal welding system according to claim 1, characterized in that: The unloading mechanism comprises a rotating disk (21) rotatably arranged on a support frame (6), a first material storage plate (11) and a second material storage plate (12) being slidably arranged at the bottom of the rotating disk (21), a screw rod (42) being rotatably arranged on the rotating disk (21), and a locking mechanism for controlling the state of the first material storage plate (11) and the second material storage plate (12) being arranged on the rotating disk (21).

3. A high-quality sheet metal welding system according to claim 2, characterized in that: The driving assembly comprises a third bevel gear (41) fixedly arranged at one end of the screw rod (42) away from the grinding block (48); a rotating rod (30) is rotatably arranged on the support frame (6); a first bevel gear (33) and a second bevel gear (34) are slidably arranged on the rotating rod (30); and a synchronization rod (39) is fixedly arranged between the first bevel gear (33) and the second bevel gear (34).

4. A high-quality sheet metal welding system according to claim 3, characterized in that: The outer circumferential surface of the rotating rod (30) is provided with a reciprocating spiral groove (31), a transposition block (35) is slidably arranged on the rotating rod (30), an abutment ball (37) adapted to the reciprocating spiral groove (31) is fixedly arranged inside the transposition block (35), and a third spring (32) is fixedly arranged between the transposition block (35) and the first bevel gear (33).

5. A high-quality sheet metal welding system according to claim 4, characterized in that: The clamping mechanism comprises a plurality of second clamping columns (28) fixedly arranged on the support frame (6), a connecting ring (26) fixedly arranged on the screw rod (42), a plurality of first clamping columns (27) fixedly arranged on the connecting ring (26), a clamping disk (22) slidably arranged on the rotating disk (21), two clamping rods (25) fixedly arranged on the clamping disk (22), and a plurality of second springs (23) fixedly arranged between the rotating disk (21) and the clamping disk (22).

6. A high-quality sheet metal welding system according to claim 5, characterized in that: An abutment ring (24) is fixedly provided on the clamping disc (22), and an abutment plate (36) is fixedly provided on the bottom of the transposition block (35).

7. A high-quality sheet metal welding system according to claim 6, characterized in that: Two telescopic rods (13) are fixedly arranged at the bottom of the rotating disk (21), and the two telescopic rods (13) are fixedly connected to the first material storage plate (11). Two first springs (14) are fixedly arranged between the first material storage plate (11) and the rotating disk (21). Two limit rods (15) are inserted into the first material storage plate (11), and bolts (16) are arranged on the second material storage plate (12).

8. A high-quality sheet metal welding method, implemented by the high-quality sheet metal welding system according to any one of claims 1 to 7, characterized in that: The steps include: S1: screening the hexagonal nuts (43) and stacking them vertically with the thread grooves of the hexagonal nuts (43) aligned end to end, and then placing the stacked hexagonal nuts (43) on the first material storage plate (11) and the second material storage plate (12) to complete the loading; S2: lifting the metal plate (5) so that the adjusting rod (52) is inserted into the hole of the metal plate (5) to adjust the position of the metal plate (5) and make the metal plate (5) press the grinding block (48); S3: rotating the rotating rod (30) so that the rotating rod (30) first drives the grinding block (48) to rotate to grind the burrs on the metal plate (5), then moves the hexagonal nut (43) downward and squeezes it on the metal plate (5) to complete the material removal, and then drives the metal plate (5) to rotate for welding; S4: Remove the welded metal plate (5).

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