Metal piece welding fixing device

Abstract

The invention belongs to the field of metal cutting and welding equipment manufacturing, and particularly relates to a metal part welding fixing device which comprises a workbench, a fixed plate is fixedly connected to the top of one end of the workbench, a movable plate is slidably connected to the other end of the workbench through a guide rail, and a fixing mechanism is arranged on the movable plate; when the cylindrical workpiece needs to be fixed, the metal workpiece is placed between the mounting seats, and then the two mounting seats move towards the metal workpiece at the same time through the adjusting mechanism by driving the adjusting mechanism until the metal workpiece is clamped and a first pressure sensor reaches a set value; when a square workpiece needs to be fixed, a driving mechanism is started to drive a trapezoidal block to reciprocate, limiting blocks on the two sides of the trapezoidal block drive triangular blocks to slide up and down, the triangular blocks drive clamping blocks connected with the triangular blocks to slide up and down till the two sides of the square workpiece are clamped, and at the moment, a second pressure sensor reaches a set value; and the function of fixing the square workpiece and the cylindrical workpiece is achieved.

Description

Technical Field

[0001] The present invention belongs to the field of manufacturing metal cutting and welding equipment, and specifically relates to a welding and fixing device for metal parts. Background Art

[0002] During the production process of metal parts, metal cutting and welding equipment is usually required. When welding parts to the ends of metal parts, generally, the parts to be welded are placed at the ends of the metal workpieces, fixed by a fixing device, and then a welding device is used to weld the connection between the metal workpiece and the parts.

[0003] A Chinese patent with the publication number CN211866993U discloses a welding and fixing device for metal workpieces, which facilitates fixing and flipping when welding metal workpieces, improving practicability; it includes a workbench, four groups of moving devices, a first support plate, a bearing, a rotating shaft, two groups of clamps, a second support plate, and two groups of cylinders; by using two groups of clamps to fix two groups of metal workpieces to be welded respectively, aligning the connection ends of the two groups of metal workpieces, then starting the two groups of cylinders, under the power of the two groups of cylinders, the two groups of telescopic rods drive the two groups of top plates to rise respectively, and the tops of the two groups of top plates respectively support the bottoms of the two groups of metal workpieces to fix them, preventing rotation during welding, then using a welding machine to weld the two groups of metal workpieces. After welding one side, start the cylinders again, retract the two groups of telescopic rods, manually rotate the handwheel to flip the two groups of metal workpieces, then use the two groups of cylinders to support and fix the two groups of metal workpieces, and then weld the other side, which facilitates fixing and flipping when welding metal workpieces, improving practicability.

[0004] In the above technology, the metal workpiece is fixed by a clamp. Since the inner side walls of the clamp are all flat, it can only fix square workpieces. When fixing a cylindrical workpiece, it is easy to slip between the clamp and the metal workpiece, resulting in unstable fixation, misalignment at the welding joint, and thus poor welding quality, reducing the quality of the metal part.

[0005] Therefore, the present invention provides a welding and fixing device for metal parts. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art and solve at least one of the technical problems proposed in the background art.

[0007] The technical solution adopted by the present invention to solve its technical problems is: A welding and fixing device for metal parts according to the present invention includes a workbench, one end of the top of the workbench is fixedly connected with a fixing plate, the other end of the workbench is slidably connected with a moving plate through a guide rail, and a fixing mechanism is provided on the moving plate; The fixing mechanism includes two mounting seats, and one side of each mounting seat is arranged on one side of the moving plate through an adjusting mechanism; arc grooves are formed in the inner side walls of the mounting seats, and anti-slip grooves are formed in the inner walls of the arc grooves; first pressure sensors are embedded and installed on the inner walls of the arc grooves. The fixing mechanism further includes a reciprocating screw rod rotatably connected to the two mounting seats through bearings. Trapezoidal blocks are threadedly connected to the reciprocating screw rods. Triangular blocks are slidably connected to the two side walls of the trapezoidal blocks through limit blocks, and the triangular blocks are slidably connected in the mounting seats; clamping blocks are fixedly connected to the side walls of the triangular blocks; one ends of the clamping blocks penetrate through the arc grooves and are fixedly connected with second pressure sensors; a driving mechanism is arranged at one end of the reciprocating screw rod.

[0008] Preferably, the driving mechanism includes a first runner and a second runner; the first runner and the second runner are respectively fixedly connected to one end of the reciprocating screw rod; rectangular plates are fixedly connected to the tops of the mounting seats; a rotating cylinder is rotatably connected to the rectangular plate close to the first runner through a bearing, and a third runner is fixedly connected to one end of the rotating cylinder; a limiting column is rotatably connected to the rectangular plate close to the second runner through a bearing, and a fourth runner is fixedly connected to one end of the limiting column. The limiting column is slidably connected to the inside of the rotating cylinder; a first belt is sleeved between the first runner and the third runner; a second belt is sleeved between the second runner and the fourth runner; a third motor is arranged at one end of the first runner, and the third motor is fixedly connected to the mounting seat through an L-shaped plate.

[0009] Preferably, the adjusting mechanism includes a rotating plate rotatably connected to the moving plate through a rotating shaft. Two connecting plates are fixedly connected to the side wall of the rotating plate. A bidirectional ball screw is rotatably connected between the two connecting plates. Two adjusting plates are symmetrically threadedly connected to the bidirectional ball screw, and the mounting seats are respectively fixedly connected to the adjusting plates; two guide rods are fixedly connected between the two connecting plates, and the adjusting plates are respectively slidably connected to the two guide rods; a second motor is arranged at one end of the bidirectional ball screw; a first motor is arranged on one side of the rotating plate.

[0010] Preferably, two first sliding columns are fixedly connected in each mounting seat, and the triangular blocks are respectively slidably connected to the two first sliding columns; two second sliding columns are fixedly connected in each mounting seat, and the clamping blocks are respectively slidably connected to the two second sliding columns.

[0011] Preferably, a mounting mechanism is arranged on the fixing plate, and the structure of the mounting mechanism is the same as that of the fixing mechanism; the same-structured driving mechanism and adjusting mechanism are also arranged on the mounting mechanism.

[0012] Preferably, the top of the workbench is slidably connected with a mounting frame through an electric slide rail, the mounting frame is slidably connected with a sliding seat through an electric slide rail, the bottom of the sliding seat is fixedly connected with a telescopic rod, and a welding gun is installed at the output end of the telescopic rod; the outer side of the telescopic rod is slidably connected with a protective cover through a limiting rod; the bottom of the protective cover is fixedly connected with a spring, and the spring is sleeved on the outer side of the telescopic rod; the bottom of the sliding seat is fixedly connected with two vertical plates; a fourth motor is fixedly connected to each of the vertical plates, a cam block is fixedly connected to the output shaft of each fourth motor, and the bottom of the cam block contacts the top of the protective cover.

[0013] Preferably, two cross plates are symmetrically and fixedly connected to the side wall of the mounting frame; cavities are formed in the cross plates; two rotating rods are rotatably connected to each of the cross plates, rotating rods are fixedly connected to both ends of each rotating rod, and a limiting roller is rotatably connected between adjacent two rotating rods through a roller shaft; a connecting rod is fixedly connected between adjacent two rotating rods; a rotating mechanism is arranged in the cavity.

[0014] Preferably, the rotating mechanism includes a first gear fixedly connected to the outer wall of the rotating rod; two adjacent first gears mesh with each other; an electric push rod is fixedly connected to the inner wall of the top of one of the cavities, and a gear is fixedly connected to the output end of the electric push rod through a connecting block; a second gear is fixedly connected to the adjacent rotating rod; the second gear meshes with a rack.

[0015] Preferably, a first cylinder is fixedly connected to the top of the workbench, and a moving plate is fixedly connected to the output end of the first cylinder; a guide rail is fixedly connected to the top of the workbench.

[0016] Preferably, a second cylinder is fixedly connected to the side wall of the moving plate, the output end of the second cylinder is connected with a mounting plate, a brush is fixedly connected to the bottom of the mounting plate, and the brush is arranged outside the guide rail; two sliding rods are fixedly connected to the side wall of the mounting plate close to the moving plate, and the sliding rods are slidably connected to the moving plate.

[0017] The beneficial effects of the present invention are as follows: 1. For the metal part welding and fixing device of the present invention, through the cooperation of the fixing mechanism, the adjusting mechanism and the driving mechanism, when it is necessary to fix a cylindrical workpiece, the metal workpiece is placed between the mounting seats, and then the adjusting mechanism is driven, and the two mounting seats are moved towards the metal workpiece simultaneously through the adjusting mechanism until the metal workpiece is clamped; when it is necessary to fix a square workpiece, the driving mechanism is started, and the clamping block is driven to slide up and down through the driving mechanism until it clamps both sides of the square workpiece, realizing the fixing function for the square workpiece and the cylindrical workpiece.

[0018] 2. The welding and fixing device for metal parts according to the present invention, through the cooperation of the first runner, the second runner, the third runner and the fourth runner, the third motor drives the first runner to rotate through the output shaft, the first runner drives the connected reciprocating screw rod to rotate, and at the same time drives the first belt to rotate. The first belt drives the third runner to rotate, the third runner drives the rotating cylinder to rotate, the rotating cylinder drives the limiting column to rotate, the limiting column drives the fourth runner to rotate, the fourth runner drives the second belt to rotate, the second belt drives the second runner to rotate, and the second runner drives another reciprocating screw rod to rotate, so as to realize the simultaneous rotation of the two reciprocating screw rods, and at the same time realize the fixing function of the square workpiece.

[0019] 3. The welding and fixing device for metal parts according to the present invention, by arranging the limiting rollers, the output end of the electric push rod drives the rack to move through the connecting block, the rack drives the second gear to rotate, the second gear drives the connected rotating rod to rotate, the rotating rod drives the first gear to rotate, the first gear drives another first gear to rotate in the opposite direction, another first gear drives the connected rotating rod to rotate in the opposite direction, two rotating rods drive the connected rotating rod to rotate in the opposite direction, and the rotating rod drives the limiting rollers to rotate in the opposite direction until the limiting rollers are attached to the bottom of the metal part, so as to provide a supporting force for the bottom of the metal part and prevent the two parts of the metal part from being misaligned or deformed during welding, and improve the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] Figure 1 is a three-dimensional view of the present invention; Figure 2 is a structural schematic diagram of the mounting seat in the present invention; Figure 3 is a structural schematic diagram of the bidirectional ball screw in the present invention; Figure 4 is a structural schematic diagram of the limiting column in the present invention; Figure 5 is an exploded view of the trapezoidal block and the triangular block in the present invention; Figure 6 is a structural schematic diagram of the cam block in the present invention; Figure 7 is a structural schematic diagram of the cross plate in the present invention; Figure 8 is a structural schematic diagram of the first gear and the second gear in the present invention; Figure 9 is a structural schematic diagram of the brush in the present invention; In the figure: 1. Workbench; 11. Fixed plate; 12. Moving plate; 121. First cylinder; 122. Guide rail; 13. Rotating plate; 131. First motor; 132. Connecting plate; 133. Adjusting plate; 134. Bi-directional ball screw; 135. Guide rod; 136. Second motor; 137. Mounting seat; 138. Anti-slip groove; 139. First pressure sensor; 14. L-shaped plate; 141. Third motor; 142. First runner; 143. Second pressure sensor; 144. Second runner; 145. Reciprocating screw; 146. Trapezoidal block; 147. Triangular block; 148. Clamping block; 15. Rectangular plate; 151. Rotating cylinder; 152. Limit post; 153. First sliding column; 154. Second sliding column; 155. Third runner; 156. Fourth runner; 2. Mounting frame; 21. Sliding seat; 22. Protective cover; 23. Telescopic rod; 24. Welding torch; 25. Vertical plate; 26. Fourth motor; 27. Cam block; 28. Spring; 29. Limit rod; 3. Horizontal plate; 31. Rotating rod; 32. Limiting roller; 33. Connecting rod; 34. Rotating rod; 35. First gear; 36. Second gear; 37. Rack; 38. Electric push rod; 39. Connecting block; 4. Second cylinder; 41. Sliding rod; 42. Mounting plate; 43. Brush. Specific embodiments

[0022] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0023] As Figures 1 to 5 shown, a metal part welding and fixing device according to an embodiment of the present invention includes a workbench 1. One end of the top of the workbench 1 is fixedly connected with a fixed plate 11. The other end of the workbench 1 is slidably connected with a moving plate 12 through a guide rail 122. A fixing mechanism is provided on the moving plate 12. The fixing mechanism includes two mounting seats 137. One side of each mounting seat 137 is arranged on one side of the moving plate 12 through an adjusting mechanism. Arc-shaped grooves are formed on the inner side walls of the mounting seats 137. Anti-slip grooves 138 are formed on the inner walls of the arc-shaped grooves. First pressure sensors 139 are embedded and installed on the inner walls of the arc-shaped grooves. The fixing mechanism further includes a reciprocating screw 145 rotatably connected to the two mounting seats 137 through bearings. Trapezoidal blocks 146 are threadedly connected to the reciprocating screw 145. Triangular blocks 147 are slidably connected to the two side walls of the trapezoidal blocks 146 through limit blocks. The triangular blocks 147 are slidably connected in the mounting seats 137. Clamping blocks 148 are fixedly connected to the side walls of the triangular blocks 147. One end of each clamping block 148 penetrates through the arc-shaped groove and is fixedly connected with a second pressure sensor 143. A driving mechanism is provided at one end of the reciprocating screw 145.

[0024] During the production process of metal parts, metal cutting and welding equipment is usually required for manufacturing. When welding parts are needed at the ends of metal parts, fixtures are usually used for fixation. However, the inner walls of the fixtures are all flat, and only square workpieces can be fixed. When fixing a cylindrical workpiece, the connection is not stably fixed and is prone to slipping, resulting in misalignment at the welding joint, thus leading to poor welding quality.

[0025] When the fixing mechanism provided by the present invention is in use and a cylindrical workpiece needs to be fixed, the metal workpiece is placed between the mounting seats 137, and then through the driving adjustment mechanism, the two mounting seats 137 are simultaneously moved towards the metal workpiece through the adjustment mechanism until the metal workpiece is clamped. During the clamping process, the pressure between the mounting seat 137 and the metal workpiece is monitored by the first pressure sensor 139. When the pressure reaches the set value, the movement stops to prevent the metal workpiece from deforming due to excessive clamping force. When a square workpiece needs to be fixed, first, the mounting seat 137 is moved to both sides of the square workpiece through the adjustment mechanism, and the square workpiece is centered and fixed by the inner wall of the arc-shaped groove. Then, the driving mechanism is started. The driving mechanism drives the two reciprocating lead screws 145 to rotate. The reciprocating lead screws 145 drive the trapezoidal blocks 146 to reciprocate. The two limit blocks on both sides of the trapezoidal blocks 146 drive the triangular blocks 147 to slide up and down. The triangular blocks 147 drive the connected clamping blocks 148 to slide up and down until they are clamped on both sides of the square workpiece. At this time, the second pressure sensor 143 reaches the set value, realizing the fixation of the square workpiece and also the fixation of the cylindrical workpiece.

[0026] As Figure 3 and Figure 4 shown, the driving mechanism includes a first runner 142 and a second runner 144; the first runner 142 and the second runner 144 are respectively fixedly connected to one end of the reciprocating lead screw 145; rectangular plates 15 are fixedly connected to the tops of the mounting seats 137; a rotating cylinder 151 is rotatably connected to the rectangular plate 15 close to the first runner 142 through a bearing, and one end of the rotating cylinder 151 is fixedly connected to a third runner 155; a limiting column 152 is rotatably connected to the rectangular plate 15 close to the second runner 144 through a bearing, one end of the limiting column 152 is fixedly connected to a fourth runner 156, and the limiting column 152 is slidably connected to the inside of the rotating cylinder 151; a first belt is sleeved between the first runner 142 and the third runner 155; a second belt is sleeved between the second runner 144 and the fourth runner 156; a third motor 141 is provided at one end of the first runner 142, and the third motor 141 is fixedly connected to the mounting seat 137 through an L-shaped plate 14.

[0027] The driving mechanism provided by the present invention is used to drive the reciprocating lead screw 145 to rotate when in use. By turning on the third motor 141, the third motor 141 drives the first runner 142 to rotate through the output shaft. The reciprocating lead screw 145 connected is driven to rotate by the first runner 142, and at the same time, the first belt is driven to rotate. The third runner 155 is driven to rotate by the first belt, the rotating cylinder 151 is driven to rotate by the third runner 155, the limiting column 152 is driven to rotate by the rotating cylinder 151, the fourth runner 156 is driven to rotate by the limiting column 152, the second belt is driven to rotate by the fourth runner 156, the second runner 144 is driven to rotate by the second belt, and the other reciprocating lead screw 145 is driven to rotate by the second runner 144, so as to realize the simultaneous rotation of the two reciprocating lead screws 145, and at the same time, the fixing function of the square workpiece is also realized.

[0028] As Figure 1 and Figure 3 As shown, the adjusting mechanism includes a rotating plate 13 rotatably connected to the moving plate 12 through a rotating shaft. Two connecting plates 132 are fixedly connected to the side wall of the rotating plate 13. A bidirectional ball screw 134 is rotatably connected between the two connecting plates 132 through bearings. Two adjusting plates 133 are symmetrically threadedly connected to the bidirectional ball screw 134, and the mounting seats 137 are respectively fixedly connected to the adjusting plates 133. Two guide rods 135 are fixedly connected between the two connecting plates 132, and the adjusting plates 133 are respectively slidably connected to the two guide rods 135. One end of the bidirectional ball screw 134 is provided with a second motor 136. A first motor 131 is provided on one side of the rotating plate 13.

[0029] When the adjusting mechanism provided by the present invention is in use and it is necessary to fix and limit a metal part, by turning on the second motor 136, the output shaft of the second motor 136 drives the bidirectional ball screw 134 to rotate. The two adjusting plates 133 are driven to move in opposite directions by the bidirectional ball screw 134, the mounting seats 137 are driven to move in opposite directions by the adjusting plates 133, and the metal part is fixed by the fixing mechanism on the mounting seats 137. During the welding process, when it is necessary to weld other surfaces of the metal part, it is necessary to turn on the first motor 131. The first motor 131 drives the rotating plate 13 to rotate through the output shaft, the adjusting mechanism is driven to rotate by the rotating plate 13, and the metal part is driven to rotate by the adjusting mechanism, so as to realize the rotation function of the metal part.

[0030] As Figure 4 and Figure 5 As shown, two first sliding columns 153 are fixedly connected in the mounting seats 137, and the triangular blocks 147 are respectively slidably connected to the two first sliding columns 153. Two second sliding columns 154 are fixedly connected in the mounting seats 137, and the clamping blocks 148 are respectively slidably connected to the two second sliding columns 154.

[0031] When the first sliding column 153 provided by the present invention is in use, during the movement of the triangular block 147, the triangular block 147 slides on the first sliding column 153, and the first sliding column 153 limits the movement of the triangular block 147 in the horizontal direction; during the movement of the clamping block 148, the clamping block 148 slides on the second sliding column 154, and the second sliding column 154 limits the movement of the clamping block 148 in the horizontal direction, improving the stability of fixation.

[0032] As Figure 1 and Figure 4 As shown, an installation mechanism is provided on the fixing plate 11, and the structure of the installation mechanism is the same as that of the fixing mechanism; the same-structured driving mechanism and adjusting mechanism are also provided on the installation mechanism.

[0033] When the fixing plate 11 provided by the present invention is in use, an installation mechanism, a driving mechanism, and an adjusting mechanism with the same structure as those provided on the moving plate 12 are used to fix a part of the metal part, and the structure on the moving plate 12 is used to fix another part of the metal part.

[0034] As Figure 1 and Figure 6 As shown, an installation frame 2 is slidably connected to the top of the workbench 1 through an electric slide rail, a sliding seat 21 is slidably connected to the installation frame 2 through an electric slide rail, a telescopic rod 23 is fixedly connected to the bottom of the sliding seat 21, and a welding gun 24 is installed at the output end of the telescopic rod 23; a protective cover 22 is slidably connected to the outside of the telescopic rod 23 through a limiting rod 29; a spring 28 is fixedly connected to the bottom of the protective cover 22, and the spring 28 is sleeved on the outside of the telescopic rod 23; two vertical plates 25 are fixedly connected to the bottom of the sliding seat 21; a fourth motor 26 is fixedly connected to each of the vertical plates 25, a cam block 27 is fixedly connected to the output shaft of the fourth motor 26, and the bottom of the cam block 27 contacts the top of the protective cover 22.

[0035] The cam block 27 provided by the present invention is used to adjust the height of the protective cover 22 during use. It is necessary to turn on the fourth motor 26, drive the cam block 27 to rotate through the output shaft of the fourth motor 26, press the protective cover 22 to a suitable height through the cam block 27, and the spring 28 is compressed. When the protective cover 22 needs to rise, by rotating the cam block 27 so that the short semi-axis faces downward, under the action of the spring 28, the protective cover 22 is jacked up. By adjusting the height of the protective cover 22, it is convenient to protect the sparks generated by welding and also convenient for installing and repairing the welding gun 24.

[0036] As Figure 1 and Figure 7As shown, two cross plates 3 are symmetrically and fixedly connected to the side wall of the mounting frame 2; cavities are formed in the cross plates 3; two rotating rods 34 are rotatably connected to the cross plates 3, and rotating rods 31 are fixedly connected to both ends of the rotating rods 34. A limiting roller 32 is rotatably connected between adjacent rotating rods 31 through a roller shaft; a connecting rod 33 is fixedly connected between adjacent rotating rods 31; a rotating mechanism is arranged in the cavity.

[0037] When the limiting roller 32 provided by the present invention is in use, when a metal part is welded, there is no supporting force below, which may cause the metal part to be misaligned or deformed during welding. By starting the rotating mechanism, the rotating mechanism drives the two rotating rods 31 to rotate in opposite directions, and the rotating rods 31 drive the limiting rollers 32 to rotate in opposite directions until the limiting rollers 32 are in contact with the bottom of the metal part, so as to provide a supporting force for the bottom of the metal part and prevent the two parts of the metal part from being misaligned or deformed during welding, improving the welding quality.

[0038] As Figure 8 shown, the rotating mechanism includes a first gear 35 fixedly connected to the outer wall of the rotating rod 34; adjacent first gears 35 mesh with each other; an electric push rod 38 is fixedly connected to the inner wall of the top of one of the cavities, and the output end of the electric push rod 38 is fixedly connected with a gear through a connecting block 39; a second gear 36 is fixedly connected to the adjacent rotating rod 34; the second gear 36 meshes with a rack 37.

[0039] When the rotating mechanism provided by the present invention is in use, by starting the electric push rod 38, the output end of the electric push rod 38 drives the rack 37 to move through the connecting block 39, the rack 37 drives the second gear 36 to rotate, the second gear 36 drives the connected rotating rod 34 to rotate, the rotating rod 34 drives the first gear 35 to rotate, the first gear 35 drives the other first gear 35 to rotate in the opposite direction, the other first gear 35 drives the connected rotating rod 34 to rotate in the opposite direction, and the two rotating rods 34 drive the connected rotating rods 31 to rotate in the opposite direction to adjust to a suitable position.

[0040] As Figure 1 shown, a first air cylinder 121 is fixedly connected to the top of the workbench 1, and a moving plate 12 is fixedly connected to the output end of the first air cylinder 121; a guide rail 122 is fixedly connected to the top of the workbench 1.

[0041] The first air cylinder 121 provided by the present invention is used to drive the moving plate 12 to move during use, and the moving plate 12 drives the metal part to align with the metal part on the fixed plate 11; during the movement of the moving plate 12, the moving plate 12 slides on the guide rail 122, and the guide rail 122 limits the moving plate 12 to move in the horizontal direction.

[0042] As Figure 1 andFigure 9 As shown, a second cylinder 4 is fixedly connected to the side wall of the moving plate 12. The output end of the second cylinder 4 is connected to a mounting plate 42. A brush 43 is fixedly connected to the bottom of the mounting plate 42. The brush 43 is arranged outside the guide rail 122. Two sliding rods 41 are fixedly connected to the side wall of the mounting plate 42 close to the moving plate 12. The sliding rods 41 are slidably connected to the moving plate 12.

[0043] The brush 43 provided by the present invention is used to clean the workbench 1 and the guide rail 122 during use. During welding, by turning on the second cylinder 4, the second cylinder 4 drives the mounting plate 42 to move through the output end. The mounting plate 42 drives the brush 43 to move. The welding slag on the workbench 1 and the guide rail 122 is cleaned by the brush 43, preventing the slag from being clamped at the connection between the moving plate 12 and the guide rail 122, resulting in the inability to align the fixed metal part with another part of the metal part when the moving plate 12 moves.

[0044] Working principle: During the production of metal parts, metal cutting and welding equipment is usually used. When welding parts are required at the end of a metal part, fixtures are usually used for fixation. However, the inner side walls of the fixtures are all flat, and only square workpieces can be fixed. When fixing a cylindrical workpiece, the connection is not stably fixed and is prone to slipping, resulting in misalignment at the welding joint, thus leading to poor welding quality.

[0045] When the fixing mechanism provided by the present invention is in use and a cylindrical workpiece needs to be fixed, the metal workpiece is placed between the mounting seats 137. Then, by driving the adjustment mechanism, the two mounting seats 137 are simultaneously moved towards the metal workpiece through the adjustment mechanism until the metal workpiece is clamped. During the clamping process, the pressure between the mounting seat 137 and the metal workpiece is monitored by the first pressure sensor 139. When the pressure reaches the set value, the movement stops to prevent the clamping force from being too large and causing deformation of the metal workpiece. When a square workpiece needs to be fixed, first, the mounting seat 137 is moved to both sides of the square workpiece through the adjustment mechanism, and the square workpiece is centered and fixed by the inner wall of the arc-shaped groove. Then, the driving mechanism is turned on. The driving mechanism drives the two reciprocating lead screws 145 to rotate. The reciprocating lead screws 145 drive the trapezoidal blocks 146 to reciprocate. The two limit blocks on both sides of the trapezoidal blocks 146 drive the triangular blocks 147 to slide up and down. The triangular blocks 147 drive the connected clamping blocks 148 to slide up and down until they are clamped on both sides of the square workpiece. At this time, the second pressure sensor 143 reaches the set value, realizing the fixation of the square workpiece and also the fixation of the cylindrical workpiece.

[0046] When the driving mechanism is in use, by turning on the third motor 141, the third motor 141 drives the first runner 142 to rotate through the output shaft, drives the connected reciprocating lead screw 145 to rotate through the first runner 142, drives the first belt to rotate at the same time, drives the third runner 155 to rotate through the first belt, drives the rotating cylinder 151 to rotate through the third runner 155, drives the limit post 152 to rotate through the rotating cylinder 151, drives the fourth runner 156 to rotate through the limit post 152, drives the second belt to rotate through the fourth runner 156, drives the second runner 144 to rotate through the second belt, and drives another reciprocating lead screw 145 to rotate through the second runner 144, so as to realize the simultaneous rotation of the two reciprocating lead screws 145 and also realize the fixing function of the square workpiece.

[0047] When the adjusting mechanism is in use and it is necessary to fix and limit the metal part, by turning on the second motor 136, the output shaft of the second motor 136 drives the bidirectional ball screw 134 to rotate, the bidirectional ball screw 134 drives the two adjusting plates 133 to move in opposite directions, the adjusting plates 133 drive the mounting seats 137 to move in opposite directions, and the fixing mechanism on the mounting seats 137 fixes the metal part; during the welding process, when it is necessary to weld other surfaces of the metal part, it is necessary to turn on the first motor 131. The first motor 131 drives the rotating plate 13 to rotate through the output shaft, the rotating plate 13 drives the adjusting mechanism to rotate, and the adjusting mechanism drives the metal part to rotate, so as to realize the rotation function of the metal part.

[0048] When it is necessary to adjust the height of the protective cover 22, by turning on the fourth motor 26, the output shaft of the fourth motor 26 drives the cam block 27 to rotate, the cam block 27 presses the protective cover 22 at an appropriate height, and the spring 28 is compressed. When the protective cover 22 needs to rise, by rotating the cam block 27 so that the short semi-axis faces downward, under the action of the spring 28, the protective cover 22 is jacked up. By adjusting the height of the protective cover 22, it is convenient to protect the sparks generated by welding and also convenient for installing and maintaining the welding gun 24.

[0049] When the metal parts are welded, there is no supporting force from below, which may cause the metal parts to be misaligned or deformed during welding. By turning on the electric push rod 38, the output end of the electric push rod 38 drives the rack 37 to move through the connecting block 39, and the second gear 36 is driven to rotate through the rack 37, and the connected rotating rod 34 is driven to rotate through the second gear 36, and the first gear 35 is driven to rotate through the rotating rod 34, and the other first gear 35 is driven to rotate in the opposite direction through the first gear 35, and the connected rotating rod 34 is driven to rotate in the opposite direction through the other first gear 35, and the connected rotating rod 31 is driven to rotate in the opposite direction through the two rotating rods 34, and the limiting roller 32 is driven to rotate in the opposite direction through the rotating rod 31 until the limiting roller 32 is in contact with the bottom of the metal part, so as to provide supporting force for the bottom of the metal part, prevent the two parts of the metal part from being misaligned or deformed during welding, and improve the quality of welding.

[0050] During welding, by turning on the second cylinder 4, the second cylinder 4 drives the mounting plate 42 to move through the output end, and drives the brush 43 to move through the mounting plate 42, and the welding ash on the workbench 1 and the guide rail 122 is cleaned by the brush 43 to prevent the ash from being clamped in the connection between the movable plate 12 and the guide rail 122, resulting in the movable plate 12 being unable to align the fixed metal parts with another part of the metal parts when it moves.

[0051] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A metal part welding and fixing device, comprising a workbench (1), one end of the top of the workbench (1) is fixedly connected with a fixing plate (11), the other end of the workbench (1) is slidably connected with a moving plate (12) through a guide rail (122), and a fixing mechanism is arranged on the moving plate (12); It is characterized in that: The fixing mechanism includes two mounting seats (137), and one side of each mounting seat (137) is arranged on one side of the moving plate (12) through an adjusting mechanism; arc-shaped grooves are formed in the inner side walls of the mounting seats (137), and anti-slip grooves (138) are formed in the inner walls of the arc-shaped grooves; first pressure sensors (139) are embedded and installed on the inner walls of the arc-shaped grooves; The fixing mechanism further includes a reciprocating lead screw (145) rotatably connected to the two mounting seats (137) through bearings, trapezoidal blocks (146) are threadedly connected to the reciprocating lead screw (145), triangular blocks (147) are slidably connected to the two side walls of the trapezoidal blocks (146) through limit blocks, and the triangular blocks (147) are slidably connected in the mounting seats (137); clamping blocks (148) are fixedly connected to the side walls of the triangular blocks (147); one ends of the clamping blocks (148) penetrate through the arc-shaped grooves and are fixedly connected with second pressure sensors (143); a driving mechanism is arranged at one end of the reciprocating lead screw (145).

2. The metal part welding and fixing device according to claim 1, characterized in that: The driving mechanism includes a first runner (142) and a second runner (144); the first runner (142) and the second runner (144) are respectively fixedly connected to one end of the reciprocating lead screw (145); rectangular plates (15) are fixedly connected to the tops of the mounting seats (137); a rotating cylinder (151) is rotatably connected to the rectangular plate (15) close to the first runner (142) through a bearing, and a third runner (155) is fixedly connected to one end of the rotating cylinder (151); a limiting column (152) is rotatably connected to the rectangular plate (15) close to the second runner (144) through a bearing, a fourth runner (156) is fixedly connected to one end of the limiting column (152), and the limiting column (152) is slidably connected to the inside of the rotating cylinder (151); a first belt is sleeved between the first runner (142) and the third runner (155); a second belt is sleeved between the second runner (144) and the fourth runner (156); a third motor (141) is arranged at one end of the first runner (142), and the third motor (141) is fixedly connected to the mounting seat (137) through an L-shaped plate (14).

3. The metal part welding and fixing device according to claim 2, characterized in that: The adjusting mechanism includes a rotating plate (13) rotatably connected to the moving plate (12) through a rotating shaft. Two connecting plates (132) are fixedly connected to the side wall of the rotating plate (13). A bidirectional ball screw (134) is rotatably connected between the two connecting plates (132) through a bearing. Two adjusting plates (133) are symmetrically threadedly connected to the bidirectional ball screw (134), and mounting seats (137) are respectively fixedly connected to the adjusting plates (133). Two guide rods (135) are fixedly connected between the two connecting plates (132), and the adjusting plates (133) are respectively slidably connected to the two guide rods (135). One end of the bidirectional ball screw (134) is provided with a second motor (136). A first motor (131) is provided on one side of the rotating plate (13).

4. A metal part welding and fixing device according to claim 3, characterized in that: Two first sliding columns (153) are fixedly connected in each of the mounting seats (137), and the triangular blocks (147) are respectively slidably connected to the two first sliding columns (153). Two second sliding columns (154) are fixedly connected in each of the mounting seats (137), and the clamping blocks (148) are respectively slidably connected to the two second sliding columns (154).

5. The metal part welding and fixing device according to claim 4, wherein: An installation mechanism is provided on the fixed plate (11), and the structure of the installation mechanism is the same as that of the fixing mechanism. The installation mechanism is also provided with a driving mechanism and an adjusting mechanism with the same structure.

6. The welding and fixing device for metal parts according to claim 5, characterized in that: The top of the workbench (1) is slidably connected with a mounting frame (2) through an electric slide rail. A sliding seat (21) is slidably connected to the mounting frame (2) through an electric slide rail. The bottom of the sliding seat (21) is fixedly connected with a telescopic rod (23), and a welding gun (24) is installed at the output end of the telescopic rod (23). The outside of the telescopic rod (23) is slidably connected with a protective cover (22) through a limiting rod (29). The bottom of the protective cover (22) is fixedly connected with a spring (28), and the spring (28) is sleeved on the outside of the telescopic rod (23). The bottom of the sliding seat (21) is fixedly connected with two vertical plates (25). Fourth motors (26) are fixedly connected to the vertical plates (25), and cam blocks (27) are fixedly connected to the output shafts of the fourth motors (26). The bottom of the cam blocks (27) is in contact with the top of the protective cover (22).

7. The metal part welding and fixing device according to claim 6, wherein: Two cross plates (3) are symmetrically fixedly connected to the side wall of the mounting frame (2). Cavities are respectively formed in the cross plates (3). Two rotating rods (34) are rotatably connected to the cross plates (3). Rotating rods (31) are fixedly connected to both ends of the rotating rods (34). A limiting roller (32) is rotatably connected between adjacent two rotating rods (31) through a roller shaft. A connecting rod (33) is fixedly connected between adjacent two rotating rods (31). A rotating mechanism is provided in the cavity.

8. A metal part welding and fixing device according to claim 7, characterized in that: The rotation mechanism includes a first gear (35) fixedly connected to the outer wall of the rotating rod (34); two adjacent first gears (35) are meshed with each other; an electric push rod (38) is fixedly connected to the inner wall of the top of one of the cavities, and a gear is fixedly connected to the output end of the electric push rod (38) through a connecting block (39); a second gear (36) is fixedly connected to the adjacent rotating rod (34); the second gear (36) is meshed with a rack (37).

9. The metal part welding and fixing device according to claim 8, characterized in that: A first cylinder (121) is fixedly connected to the top of the workbench (1), and the moving plate (12) is fixedly connected to the output end of the first cylinder (121); a guide rail (122) is fixedly connected to the top of the workbench (1).

10. A metal part welding and fixing device according to claim 9, characterized in that: A second cylinder (4) is fixedly connected to the side wall of the moving plate (12), the output end of the second cylinder (4) is connected to a mounting plate (42), a brush (43) is fixedly connected to the bottom of the mounting plate (42), and the brush (43) is arranged outside the guide rail (122); two sliding rods (41) are fixedly connected to the side wall of the mounting plate (42) close to the moving plate (12), and the sliding rods (41) are slidably connected to the moving plate (12).

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