Metal parts welding and fixing device

Abstract

The present invention belongs to the field of metal cutting and welding equipment manufacturing, and specifically relates to a metal part welding and fixing device, comprising a workbench, a fixed plate fixedly connected to the top of one end of the workbench, a movable plate slidably connected to the other end of the workbench through a guide rail, and a fixing mechanism is provided on the movable plate; when a cylindrical workpiece needs to be fixed, the metal workpiece is placed between the mounting seats, and then the adjusting mechanism is driven to simultaneously move the two mounting seats toward the metal workpiece through the adjusting mechanism until the metal workpiece is clamped and the first pressure sensor reaches a set value; when a square workpiece needs to be fixed, the trapezoidal block is driven to reciprocate by turning on the driving mechanism, the triangular block is driven to slide up and down by the limit blocks on both sides of the trapezoidal block, and the connected clamping blocks are driven to slide up and down by the triangular block until they are clamped on both sides of the square workpiece. At this time, the second pressure sensor reaches the set value, thereby realizing the fixing function of the square workpiece and the cylindrical workpiece.

Description

Technical Field

[0001] The invention belongs to the field of metal cutting and welding equipment manufacturing, in particular to a metal piece welding and fixing device. Background Art

[0002] During the production process, metal parts usually need to be manufactured using metal cutting and welding equipment. When parts need to be welded to the ends of metal parts, the parts to be welded are generally placed on the ends of the metal workpieces, fixed with a fixture, and then the connection between the metal workpiece and the parts is welded using a welding device.

[0003] A Chinese patent with announcement number CN211866993U discloses a metal workpiece welding fixture, which is convenient for users to fix and flip metal workpieces when welding, improving practicality; it includes a workbench, four sets of moving devices, a first support plate, a bearing, a rotating shaft, two sets of clamps, a second support plate and two sets of cylinders; by using the two sets of clamps to fix the two sets of metal workpieces to be welded, the connection ends of the two sets of metal workpieces are aligned, and then the two sets of cylinders are started. Under the power of the two sets of cylinders, the two sets of telescopic rods respectively drive the two sets of top plates to rise, and the top ends of the two sets of top plates respectively support the bottom ends of the two sets of metal workpieces to fix them to prevent rotation during the welding process, and then use the welding machine to weld the two sets of metal workpieces. After welding one side, the cylinders are started again to retract the two sets of telescopic rods, and the handwheels are manually turned to flip the two sets of metal workpieces. Then, the two sets of cylinders are used to support and fix the two sets of metal workpieces, and then the other side is welded. It is convenient for users to fix and flip the metal workpieces when welding, improving practicality.

[0004] In the above technology, a clamp is used to fix the metal workpiece. Since the inner side walls of the clamp are flat, only square workpieces can be fixed. If a cylindrical workpiece is fixed, the clamp and the metal workpiece are prone to slippage, resulting in unstable fixation and misalignment at the weld, which leads to poor welding quality and reduced quality of the metal parts.

[0005] To this end, the present invention provides a metal piece welding and fixing device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a metal welding and fixing device according to the present invention comprises a workbench, a fixed plate is fixedly connected to the top of one end of the workbench, and a movable plate is slidably connected to the other end of the workbench via a guide rail, and a fixing mechanism is provided on the movable plate;

[0008] The fixing mechanism includes two mounting seats, one side of each mounting seat is arranged on one side of the movable plate through an adjustment mechanism; the inner side walls of each mounting seat are provided with an arc-shaped groove, the inner walls of each arc-shaped groove are provided with an anti-slip groove; the inner walls of each arc-shaped groove are embedded with a first pressure sensor;

[0009] The fixing mechanism also includes a reciprocating screw rod rotatably connected to the two mounting seats through a bearing, and the reciprocating screw rod is threadedly connected to a trapezoidal block, and the two side walls of the trapezoidal block are slidably connected to a triangular block through a limit block, and the triangular block is slidably connected in the mounting seat; a clamping block is fixedly connected to the side walls of the triangular block; one end of the clamping block passes through an arc groove and is fixedly connected to a second pressure sensor; a driving mechanism is provided at one end of the reciprocating screw rod.

[0010] Preferably, the driving mechanism includes a first rotating wheel and a second rotating wheel; the first rotating wheel and the second rotating wheel are respectively fixedly connected to one end of the reciprocating screw; the top of the mounting seat is fixedly connected to a rectangular plate; the rectangular plate close to the first rotating wheel is rotatably connected to a rotating cylinder through a bearing, and one end of the rotating cylinder is fixedly connected to a third rotating wheel; the rectangular plate close to the second rotating wheel is rotatably connected to a limiting column through a bearing, one end of the limiting column is fixedly connected to a fourth rotating wheel, and the limiting column is slidably connected to the inner side of the rotating cylinder; a first belt is provided between the first rotating wheel and the third rotating wheel; a second belt is provided between the second rotating wheel and the fourth rotating wheel; a third motor is provided at one end of the first rotating wheel, and the third motor is fixed to the mounting seat through an L-shaped plate.

[0011] Preferably, the adjustment mechanism includes a rotating plate rotatably connected to the movable 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 through a bearing, two adjustment plates are symmetrically threaded on the bidirectional ball screw, and the mounting seats are respectively fixed to the adjustment plates; two guide rods are fixed between the two connecting plates, and the adjustment plates are respectively slidably connected to the two guide rods; a second motor is provided at one end of the bidirectional ball screw; and a first motor is provided on one side of the rotating plate.

[0012] Preferably, two first sliding columns are fixedly connected in the mounting seat, and the triangular blocks are slidably connected to the two first sliding columns; two second sliding columns are fixedly connected in the mounting seat, and the clamping blocks are slidably connected to the two second sliding columns.

[0013] Preferably, the fixing plate is provided with a mounting mechanism, and the mounting mechanism has the same structure as the fixing mechanism; the mounting mechanism is also provided with a driving mechanism and an adjusting mechanism of the same structure.

[0014] Preferably, the top of the workbench is slidably connected to a mounting frame via an electric slide rail, and the mounting frame is slidably connected to a sliding seat via an electric slide rail, the bottom of the sliding seat is fixedly connected to 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 to a protective cover via a limit rod; the bottom of the protective cover is fixedly connected to a spring, and the spring is sleeved on the outer side of the telescopic rod; the bottom of the sliding seat is fixedly connected to two vertical plates; the fourth motor is fixedly connected to the vertical plates, and the output shaft of the fourth motor is fixedly connected to a cam block, and the bottom of the cam block is in contact with the top of the protective cover.

[0015] Preferably, two horizontal plates are symmetrically fixed on the side walls of the mounting frame; a cavity is opened in each of the horizontal plates; two rotating rods are rotatably connected to each of the horizontal plates, both ends of the rotating rods are fixed with rotating rods, and a limiting roller is rotatably connected between two adjacent rotating rods through a roller shaft; a connecting rod is fixed between two adjacent rotating rods; and a rotating mechanism is provided in the cavity.

[0016] Preferably, the rotating mechanism includes a first gear fixed to the outer wall of the rotating rod; two adjacent first gears are meshed with each other; an electric push rod is fixed to the top inner wall of one of the cavities, and the output end of the electric push rod is fixed to a gear through a connecting block; a second gear is fixed to the adjacent rotating rod; and the second gear is meshed with the rack.

[0017] Preferably, a first cylinder is fixed to the top of the workbench, and the movable plate is fixed to the output end of the first cylinder; and the guide rail is fixed to the top of the workbench.

[0018] Preferably, a second cylinder is fixedly connected to the side wall of the movable plate, the output end of the second cylinder is connected to a mounting plate, a brush is fixedly connected to the bottom of the mounting plate, and the brush is arranged on the outside of the guide rail; two sliding rods are fixedly connected to the side wall of the mounting plate close to the movable plate, and the sliding rods are slidably connected to the movable plate.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. The metal workpiece welding and fixing device described in the present invention cooperates with a fixing mechanism, an adjusting mechanism and a driving mechanism. When a cylindrical workpiece needs to be fixed, the metal workpiece is placed between the mounting seats, and then the adjusting mechanism is driven to move the two mounting seats toward the metal workpiece at the same time until the metal workpiece is clamped; when a square workpiece needs to be fixed, the driving mechanism is turned on and the clamping blocks are driven by the driving mechanism to slide up and down until they are clamped on both sides of the square workpiece, thereby realizing the fixing function of square and cylindrical workpieces.

[0021] 2. The metal part welding and fixing device described in the present invention cooperates with the first, second, third and fourth wheels, and drives the first wheel to rotate through the output shaft of the third motor, drives the connected reciprocating screw to rotate through the first wheel, and drives the first belt to rotate at the same time, drives the third wheel to rotate through the first belt, drives the rotating drum to rotate through the third wheel, drives the limiting column to rotate through the rotating drum, drives the fourth wheel to rotate through the limiting column, drives the second belt to rotate through the fourth wheel, drives the second wheel to rotate through the second belt, and drives the other reciprocating screw to rotate through the second wheel, thereby realizing the simultaneous rotation of the two reciprocating screws, and also realizing the fixing function of the square workpiece.

[0022] 3. The metal welding and fixing device described in the present invention drives the rack to move through the output end of the electric push rod through the connecting block by setting a limiting roller, drives the second gear to rotate through the rack, drives the connected rotating rod to rotate through the second gear, drives the first gear to rotate through the rotating rod, drives the other first gear to rotate in the opposite direction through the first gear, drives the connected rotating rod to rotate in the opposite direction through the other first gear, drives the connected rotating rod to rotate in the opposite direction through the two rotating rods, and drives the limiting roller to rotate in the opposite direction through the rotating rod until the limiting roller fits with the bottom of the metal part, so as to provide support force for the bottom of the metal part, prevent the two parts of the metal part from being dislocated or deformed during welding, and improve the quality of welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a perspective view of the present invention;

[0025] Figure 2 It is a structural schematic diagram of the mounting base in the present invention;

[0026] Figure 3 It is a structural diagram of the bidirectional ball screw in the present invention;

[0027] Figure 4 It is a structural schematic diagram of the limiting column in the present invention;

[0028] Figure 5 It is an exploded view of the trapezoidal block and the triangular block in the present invention;

[0029] Figure 6 It is a structural schematic diagram of the cam block in the present invention;

[0030] Figure 7 It is a structural diagram of the horizontal plate in the present invention;

[0031] Figure 8 This is a schematic structural diagram of the first gear and the second gear in the present invention;

[0032] Figure 9 It is a structural diagram of the brush of the present invention;

[0033] In the figure: 1. workbench; 11. fixed plate; 12. movable plate; 121. first cylinder; 122. guide rail; 13. rotating plate; 131. first motor; 132. connecting plate; 133. adjusting plate; 134. bidirectional ball screw; 135. guide rod; 136. second motor; 137. mounting base; 138. anti-slip groove; 139. first pressure sensor; 14. L-shaped plate; 141. third motor; 142. first rotating wheel; 143. second pressure sensor; 144. second rotating wheel; 145. reciprocating screw; 146. trapezoidal block; 147. triangular block; 148. clamping block; 15. rectangular plate; 1 51. Rotating cylinder; 152. Limiting column; 153. First sliding column; 154. Second sliding column; 155. Third rotating wheel; 156. Fourth rotating wheel; 2. Mounting frame; 21. Sliding seat; 22. Protective cover; 23. Telescopic rod; 24. Welding gun; 25. Vertical plate; 26. Fourth motor; 27. Cam block; 28. Spring; 29. ​​Limiting 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. DETAILED DESCRIPTION

[0034] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0035] like Figures 1 to 5As shown, a metal welding fixture according to an embodiment of the present invention comprises a workbench 1, wherein a fixed plate 11 is fixedly connected to the top of one end of the workbench 1, and a movable plate 12 is slidably connected to the other end of the workbench 1 via a guide rail 122, and a fixing mechanism is provided on the movable plate 12; the fixing mechanism comprises two mounting seats 137, and one side of the mounting seats 137 is arranged on one side of the movable plate 12 via an adjustment mechanism; the inner side walls of the mounting seats 137 are provided with arc-shaped grooves, and the inner walls of the arc-shaped grooves are provided with anti-slip grooves 138; the inner walls of the arc-shaped grooves are embedded with first Pressure sensor 139; the fixing mechanism also includes a reciprocating screw 145 rotatably connected to the two mounting seats 137 through a bearing, and the reciprocating screw 145 is threadedly connected to a trapezoidal block 146, and the two side walls of the trapezoidal block 146 are slidably connected to a triangular block 147 through a limit block, and the triangular block 147 is slidably connected in the mounting seat 137; the side walls of the triangular block 147 are fixedly connected to a clamping block 148; one end of the clamping block 148 passes through an arc groove and is fixedly connected to a second pressure sensor 143; one end of the reciprocating screw 145 is provided with a driving mechanism.

[0036] During the production process, metal parts usually need to be manufactured using metal cutting and welding equipment. When the ends of metal parts need to be welded, they are usually fixed with fixtures. However, the inner walls of the fixtures are flat and can only fix square workpieces. If cylindrical workpieces are fixed, the connection is unstable and prone to slipping, resulting in misalignment at the weld, which leads to poor welding quality.

[0037] When the fixing mechanism provided by the present invention is used, when it is necessary to fix a cylindrical workpiece, the metal workpiece is placed between the mounting seats 137, and then the adjustment mechanism is driven to move the two mounting seats 137 toward the metal workpiece at the same time until the metal workpiece is clamped. During the clamping process, the pressure between the mounting seats 137 and the metal workpiece is monitored by the first pressure sensor 139. When the pressure reaches the set value, the movement is stopped to prevent the clamping force from being too large, resulting in deformation of the metal workpiece. When it is necessary to fix a square workpiece, the mounting seats 137 are first adjusted by the adjustment mechanism. Move to both sides of the square workpiece, fix the square workpiece in the center through the inner wall of the arc groove, and then turn on the driving mechanism, drive the two reciprocating screws 145 to rotate through the driving mechanism, drive the trapezoidal block 146 to reciprocate through the reciprocating screw 145, drive the triangular block 147 to slide up and down through the limit blocks on both sides of the trapezoidal block 146, and drive the connected clamping block 148 to slide up and down through the triangular block 147 until it is clamped on both sides of the square workpiece. At this time, the second pressure sensor 143 reaches the set value, and the square workpiece is fixed. At the same time, the cylindrical workpiece can also be fixed.

[0038] like Figure 3 and Figure 4 As shown, the driving mechanism includes a first rotating wheel 142 and a second rotating wheel 144; the first rotating wheel 142 and the second rotating wheel 144 are respectively fixed to one end of the reciprocating screw 145; the top of the mounting seat 137 is fixedly connected to a rectangular plate 15; a rotating cylinder 151 is rotatably connected to the rectangular plate 15 near the first rotating wheel 142 through a bearing, and one end of the rotating cylinder 151 is fixedly connected to a third rotating wheel 155; a limiting column 152 is rotatably connected to the rectangular plate 15 near the second rotating wheel 144 through a bearing, one end of the limiting column 152 is fixedly connected to a fourth rotating wheel 156, and the limiting column 152 is slidably connected to the inner side of the rotating cylinder 151; a first belt is provided between the first rotating wheel 142 and the third rotating wheel 155; a second belt is provided between the second rotating wheel 144 and the fourth rotating wheel 156; a third motor 141 is provided at one end of the first rotating wheel 142, and the third motor 141 is fixed to the mounting seat 137 through an L-shaped plate 14.

[0039] The driving mechanism provided by the present invention is used to drive the reciprocating screw 145 to rotate when in use. By turning on the third motor 141, the third motor 141 drives the first rotating wheel 142 to rotate through the output shaft, and drives the connected reciprocating screw 145 to rotate through the first rotating wheel 142, and at the same time drives the first belt to rotate, and drives the third rotating wheel 155 to rotate through the first belt, drives the rotating cylinder 151 to rotate through the third rotating wheel 155, drives the limiting column 152 to rotate through the rotating cylinder 151, drives the fourth rotating wheel 156 to rotate through the limiting column 152, drives the second belt to rotate through the fourth rotating wheel 156, drives the second rotating wheel 144 to rotate through the second belt, and drives the other reciprocating screw 145 to rotate through the second rotating wheel 144, thereby realizing the simultaneous rotation of the two reciprocating screws 145, and also realizing the fixing function of the square workpiece.

[0040] like Figure 1 and Figure 3 As shown, the adjustment mechanism includes a rotating plate 13 rotatably connected to the movable plate 12 via 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 via a bearing, two adjustment plates 133 are symmetrically threaded on the bidirectional ball screw 134, and the mounting seats 137 are respectively fixed to the adjustment plates 133; two guide rods 135 are fixed between the two connecting plates 132, and the adjustment plates 133 are respectively slidably connected to the two guide rods 135; a second motor 136 is provided at one end of the bidirectional ball screw 134; and a first motor 131 is provided on one side of the rotating plate 13.

[0041] When the adjustment mechanism provided by the present invention is in use and needs to fix and limit the metal part, the second motor 136 is turned on, and the bidirectional ball screw 134 is driven to rotate by the output shaft of the second motor 136, and the two adjustment plates 133 are driven to move in opposite directions by the bidirectional ball screw 134, and the mounting seat 137 is driven to move in opposite directions by the adjustment plate 133, and the metal part is fixed by the fixing mechanism on the mounting seat 137; during the welding process, when it is necessary to weld other surfaces of the metal part, the first motor 131 needs to be turned on, and the first motor 131 drives the rotating plate 13 to rotate through the output shaft, and drives the adjusting mechanism to rotate through the rotating plate 13, and drives the metal part to rotate through the adjusting mechanism, thereby realizing the rotation function of the metal part.

[0042] like Figure 4 and Figure 5 As shown, two first sliding posts 153 are fixedly connected in the mounting seat 137 , and the triangular blocks 147 are slidably connected to the two first sliding posts 153 ; two second sliding posts 154 are fixedly connected in the mounting seat 137 , and the clamping blocks 148 are slidably connected to the two second sliding posts 154 .

[0043] When the first sliding column 153 provided by the present invention is in use, the triangular block 147 slides on the first sliding column 153 during movement, and the first sliding column 153 limits the triangular block 147 to move in the horizontal direction; when the clamping block 148 moves, the clamping block 148 slides on the second sliding column 154, and the second sliding column 154 limits the clamping block 148 to move in the horizontal direction, thereby improving the stability of the fixation.

[0044] like Figure 1 and Figure 4 As shown, the fixing plate 11 is provided with a mounting mechanism, and the mounting mechanism has the same structure as the fixing mechanism; the mounting mechanism is also provided with a driving mechanism and an adjusting mechanism of the same structure.

[0045] When in use, the fixed plate 11 provided by the present invention has the same mounting mechanism, driving mechanism and adjusting mechanism as those on the movable plate 12 and is used to fix a part of the metal part, while the structure on the movable plate 12 is used to fix another part of the metal part.

[0046] like Figure 1 and Figure 6As shown, the top of the workbench 1 is slidably connected to the mounting frame 2 through an electric slide rail, and the mounting frame 2 is slidably connected to the sliding seat 21 through an electric slide rail. The bottom of the sliding seat 21 is fixedly connected to a telescopic rod 23, and a welding gun 24 is installed at the output end of the telescopic rod 23; the outer side of the telescopic rod 23 is slidably connected to a protective cover 22 through a limit rod 29; the bottom of the protective cover 22 is fixedly connected to a spring 28, and the spring 28 is sleeved on the outer side of the telescopic rod 23; the bottom of the sliding seat 21 is fixedly connected to two vertical plates 25; the vertical plates 25 are each fixedly connected to a fourth motor 26, and the output shaft of the fourth motor 26 is each fixedly connected to a cam block 27, and the bottom of the cam block 27 is in contact with the top of the protective cover 22.

[0047] The cam block 27 provided by the present invention is used to adjust the height of the protective cover 22 when in use. The fourth motor 26 needs to be turned on, and the cam block 27 is driven to rotate by the output shaft of the fourth motor 26. The protective cover 22 is pressed to a suitable height by the cam block 27, and the spring 28 is compressed. When the protective cover 22 needs to rise, the cam block 27 is rotated so that the short half-axis is facing downward. Under the action of the spring 28, the protective cover 22 is pushed upward. By adjusting the height of the protective cover 22, sparks generated by protective welding are easily protected, and the installation and maintenance of the welding gun 24 are also convenient.

[0048] like Figure 1 and Figure 7 As shown, two horizontal plates 3 are symmetrically fixed to the side walls of the mounting frame 2; a cavity is opened in each of the horizontal plates 3; two rotating rods 34 are rotatably connected to each of the horizontal plates 3, and both ends of the rotating rods 34 are fixed with rotating rods 31, and two adjacent rotating rods 31 are rotatably connected with a limiting roller 32 through a roller shaft; a connecting rod 33 is fixed between two adjacent rotating rods 31; and a rotating mechanism is provided in the cavity.

[0049] When the limiting roller 32 provided by the present invention is in use, there is no supporting force below the metal part during welding, which may cause the metal part to be dislocated or deformed during welding. By turning on the rotating mechanism, the two rotating rods 31 are driven to rotate in opposite directions by the rotating mechanism, and the limiting rollers 32 are driven to rotate in opposite directions by the rotating rods 31 until the limiting rollers 32 are in contact with the bottom of the metal part, thereby providing supporting force for the bottom of the metal part, preventing the two parts of the metal part from being dislocated or deformed during welding, and improving the quality of welding.

[0050] like Figure 8 As shown, the rotating mechanism includes a first gear 35 fixed 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 fixed to the top inner wall of one of the cavities, and the output end of the electric push rod 38 is fixed to a gear through a connecting block 39; a second gear 36 is fixed to the adjacent rotating rod 34; the second gear 36 is meshed with a rack 37.

[0051] When the rotation mechanism provided by the present invention is in use, 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 rack 37 drives the second gear 36 to rotate, and the second gear 36 drives the connected rotating rod 34 to rotate, and the rotating rod 34 drives the first gear 35 to rotate, and the first gear 35 drives the other first gear 35 to rotate in the opposite direction, and 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 rod 31 to rotate in the opposite direction, so that it is adjusted to a suitable position.

[0052] like Figure 1 As shown, a first cylinder 121 is fixed to the top of the workbench 1 , and the movable plate 12 is fixed to the output end of the first cylinder 121 ; the guide rail 122 is fixed to the top of the workbench 1 .

[0053] The first cylinder 121 provided by the present invention is used to drive the movable plate 12 to move when in use, and the movable plate 12 drives the metal parts to move to align with the metal parts on the fixed plate 11; during the movement of the movable plate 12, the movable plate 12 slides on the guide rail 122, and the guide rail 122 limits the movable plate 12 to move in the horizontal direction.

[0054] like Figure 1 and Figure 9 As shown, a second cylinder 4 is fixedly connected to the side wall of the movable plate 12, and 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 on the outside of the guide rail 122; two sliding rods 41 are fixedly connected to the side wall of the mounting plate 42 close to the movable plate 12, and the sliding rods 41 are slidably connected to the movable plate 12.

[0055] The brush 43 provided by the present invention is used to clean the workbench 1 and the guide rail 122 when in 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, and drives the brush 43 to move through the mounting plate 42. 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 at 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 moving.

[0056] Working principle: During the production process, metal parts usually need to be manufactured using metal cutting and welding equipment. When the ends of metal parts need to be welded, they are usually fixed with fixtures. However, the inner walls of the fixtures are flat and can only fix square workpieces. If cylindrical workpieces are fixed, the connection is unstable and prone to slipping, resulting in misalignment at the weld, which leads to poor welding quality.

[0057] When the fixing mechanism provided by the present invention is used, when it is necessary to fix a cylindrical workpiece, the metal workpiece is placed between the mounting seats 137, and then the adjustment mechanism is driven to move the two mounting seats 137 toward the metal workpiece at the same time until the metal workpiece is clamped. During the clamping process, the pressure between the mounting seats 137 and the metal workpiece is monitored by the first pressure sensor 139. When the pressure reaches the set value, the movement is stopped to prevent the clamping force from being too large, resulting in deformation of the metal workpiece. When it is necessary to fix a square workpiece, the mounting seats 137 are first adjusted by the adjustment mechanism. Move to both sides of the square workpiece, fix the square workpiece in the center through the inner wall of the arc groove, and then turn on the driving mechanism, drive the two reciprocating screws 145 to rotate through the driving mechanism, drive the trapezoidal block 146 to reciprocate through the reciprocating screw 145, drive the triangular block 147 to slide up and down through the limit blocks on both sides of the trapezoidal block 146, and drive the connected clamping block 148 to slide up and down through the triangular block 147 until it is clamped on both sides of the square workpiece. At this time, the second pressure sensor 143 reaches the set value, and the square workpiece is fixed. At the same time, the cylindrical workpiece can also be fixed.

[0058] When the driving mechanism is in use, by turning on the third motor 141, the third motor 141 drives the first rotary wheel 142 to rotate through the output shaft, and drives the connected reciprocating screw 145 to rotate through the first rotary wheel 142, and at the same time drives the first belt to rotate, and drives the third rotary wheel 155 to rotate through the first belt, drives the rotating cylinder 151 to rotate through the third rotary wheel 155, drives the limiting column 152 to rotate through the rotating cylinder 151, drives the fourth rotary wheel 156 to rotate through the limiting column 152, drives the second belt to rotate through the fourth rotary wheel 156, drives the second rotary wheel 144 to rotate through the second belt, and drives the other reciprocating screw 145 to rotate through the second rotary wheel 144, thereby realizing the simultaneous rotation of the two reciprocating screws 145, and also realizing the fixing function of the square workpiece.

[0059] When the adjusting mechanism is in use and the metal part needs to be fixed and limited, the second motor 136 is turned on, and the bidirectional ball screw 134 is driven to rotate by the output shaft of the second motor 136, and the two adjusting plates 133 are driven to move in opposite directions by the bidirectional ball screw 134, and the mounting seat 137 is driven to move in opposite directions by the adjusting plate 133, and the metal part is fixed by the fixing mechanism on the mounting seat 137; during the welding process, when it is necessary to weld other surfaces of the metal part, the first motor 131 needs to be turned on, and the first motor 131 drives the rotating plate 13 to rotate through the output shaft, and drives the adjusting mechanism to rotate through the rotating plate 13, and drives the metal part to rotate through the adjusting mechanism, thereby realizing the rotation function of the metal part.

[0060] When the height of the protective cover 22 needs to be adjusted, the fourth motor 26 is turned on, and the cam block 27 is driven to rotate by the output shaft of the fourth motor 26. The protective cover 22 is pressed to a suitable height by the cam block 27, and the spring 28 is compressed. When the protective cover 22 needs to be raised, the cam block 27 is rotated so that the short half-axis is facing downward. Under the action of the spring 28, the protective cover 22 is pushed upward. By adjusting the height of the protective cover 22, it is convenient to protect sparks generated by welding, and it is also convenient to install and maintain the welding gun 24.

[0061] When welding metal parts, there is no supporting force from below, which may cause the metal parts to be dislocated 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 drives the second gear 36 to rotate through the rack 37, and drives the connected rotating rod 34 to rotate through the second gear 36, and drives the first gear 35 to rotate through the rotating rod 34, and drives the other first gear 35 to rotate in the opposite direction through the first gear 35, and drives the connected rotating rod 34 to rotate in the opposite direction through the other first gear 35, and drives the connected rotating rod 31 to rotate in the opposite direction through the two rotating rods 34, and drives the limiting roller 32 to rotate in the opposite direction through the rotating rod 31 until the limiting roller 32 fits against the bottom of the metal part, so as to provide support force for the bottom of the metal part, prevent the two parts of the metal part from being dislocated or deformed during welding, and improve the quality of welding.

[0062] 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 at 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.

[0063] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A metal welding fixture, comprising a workbench (1), wherein a fixed plate (11) is fixedly connected to the top of one end of the workbench (1), and a movable plate (12) is slidably connected to the other end of the workbench (1) via a guide rail (122), and a fixing mechanism is provided on the movable plate (12); Its characteristics are: The fixing mechanism includes two mounting seats (137), one side of each mounting seat (137) is arranged on one side of the movable plate (12) through an adjustment mechanism; an arc-shaped groove is provided on the inner side wall of each mounting seat (137), and an anti-slip groove (138) is provided on the inner wall of each arc-shaped groove; and a first pressure sensor (139) is embedded and installed on the inner wall of each arc-shaped groove; The fixing mechanism also includes a reciprocating screw (145) rotatably connected to the two mounting seats (137) through a bearing, the reciprocating screw (145) is threadedly connected to a trapezoidal block (146), and the two side walls of the trapezoidal block (146) are slidably connected to a triangular block (147) through a limit block, and the triangular block (147) is slidably connected in the mounting seat (137); the side walls of the triangular block (147) are fixedly connected to a clamping block (148); one end of the clamping block (148) passes through the arc groove and is fixedly connected to the second pressure sensor (143); one end of the reciprocating screw (145) is provided with a driving mechanism; The driving mechanism comprises a first rotating wheel (142) and a second rotating wheel (144); the first rotating wheel (142) and the second rotating wheel (144) are respectively fixed to one end of a reciprocating screw (145); a rectangular plate (15) is fixed to the top of the mounting seat (137); a rotating cylinder (151) is rotatably connected to the rectangular plate (155) near the first rotating wheel (142) via a bearing, and one end of the rotating cylinder (151) is fixed to a third rotating wheel (155); a rotating cylinder (151) is rotatably connected to the rectangular plate (15) near the second rotating wheel (144) via a bearing. A limiting column (152) is connected, one end of the limiting column (152) is fixedly connected to a fourth rotating wheel (156), and the limiting column (152) is slidably connected to the inner side of the rotating cylinder (151); a first belt is provided between the first rotating wheel (142) and the third rotating wheel (155); a second belt is provided between the second rotating wheel (144) and the fourth rotating wheel (156); a third motor (141) is provided at one end of the first rotating wheel (142), and the third motor (141) is fixedly connected to the mounting seat (137) through an L-shaped plate (14); The adjustment mechanism comprises a rotating plate (13) rotatably connected to the movable plate (12) via 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) via a bearing, two adjustment plates (133) are symmetrically threaded on the bidirectional ball screw (134), and the mounting seats (137) are respectively fixed to the adjustment plates (133); two guide rods (135) are fixedly connected between the two connecting plates (132), and the adjustment plates (133) are respectively slidably connected to the two guide rods (135); a second motor (136) is provided at one end of the bidirectional ball screw (134); and a first motor (131) is provided on one side of the rotating plate (13); Two first sliding columns (153) are fixedly connected in the mounting seat (137), and the triangular blocks (147) are slidably connected to the two first sliding columns (153); two second sliding columns (154) are fixedly connected in the mounting seat (137), and the clamping blocks (148) are slidably connected to the two second sliding columns (154).

2. A metal parts welding and fixing device according to claim 1, characterized in that: The fixing plate (11) is provided with a mounting mechanism, and the mounting mechanism has the same structure as the fixing mechanism; the mounting mechanism is also provided with a driving mechanism and an adjusting mechanism of the same structure.

3. The metal parts welding and fixing device according to claim 2, characterized in that: The top of the workbench (1) is slidably connected to a mounting frame (2) via an electric slide rail, and a sliding seat (21) is slidably connected to the mounting frame (2) via an electric slide rail. The bottom of the sliding seat (21) is fixedly connected to a telescopic rod (23), and a welding gun (24) is installed at the output end of the telescopic rod (23); the outer side of the telescopic rod (23) is slidably connected to a protective cover (22) via a limit rod (29); the bottom of the protective cover (22) is fixedly connected to a spring (28), and the spring (28) is sleeved on the outer side of the telescopic rod (23); the bottom of the sliding seat (21) is fixedly connected to two vertical plates (25); the vertical plates (25) are each fixedly connected to a fourth motor (26), and the output shaft of the fourth motor (26) is each fixedly connected to a cam block (27), and the bottom of the cam block (27) is in contact with the top of the protective cover (22).

4. The metal part welding and fixing device according to claim 3, characterized in that: Two transverse plates (3) are symmetrically fixed on the side walls of the mounting frame (2); a cavity is provided in each of the transverse plates (3); two rotating rods (34) are rotatably connected to each of the transverse plates (3), both ends of the rotating rods (34) are fixed with rotating rods (31), and two adjacent rotating rods (31) are rotatably connected to a limiting roller (32) via a roller shaft; a connecting rod (33) is fixed between two adjacent rotating rods (31); and a rotating mechanism is provided in the cavity.

5. The metal parts welding and fixing device according to claim 4, characterized in that: The rotating mechanism comprises a first gear (35) fixedly connected to the outer wall of the rotating rod (34); two adjacent first gears (35) mesh with each other; an electric push rod (38) is fixedly connected to the top inner wall of one of the cavities, and the output end of the electric push rod (38) is fixedly connected to a gear through a connecting block (39); a second gear (36) is fixedly connected to the adjacent rotating rod (34); and the second gear (36) meshes with a rack (37).

6. The metal part welding and fixing device according to claim 5, characterized in that: A first cylinder (121) is fixedly connected to the top of the workbench (1), and the movable plate (12) is fixedly connected to the output end of the first cylinder (121); and the guide rail (122) is fixedly connected to the top of the workbench (1).

7. The metal part welding and fixing device according to claim 6, characterized in that: A second cylinder (4) is fixedly connected to the side wall of the movable plate (12), an 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 on the outside of the guide rail (122); two sliding rods (41) are fixedly connected to the side wall of the mounting plate (42) close to the movable plate (12), and the sliding rods (41) are slidably connected to the movable plate (12).

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