Positioning device for carriage welding machining and using method

Abstract

The invention relates to the technical field of carriage welding, in particular to a positioning device for carriage welding machining and a using method, the positioning device comprises a welding table, and a support of a C-shaped structure is arranged on the welding table. According to the positioning device for carriage welding machining and the using method, by pulling a carriage plate, an extrusion block is pulled out of a triangular groove, locking of a hoop to a connecting column is canceled, at the moment, the connecting column and a pressing disc can drive the carriage plate to rotate and reverse along a horizontal plane along a sliding base, after reversing is completed, the carriage plate and the sliding base are pushed to reset, and locking can be conducted again; compared with an existing mode that the carriage plate is integrally fixed along the table top, the pressing plate and the carriage plate can be fixed and unlocked through cooperation of the extrusion block and the triangular groove so as to achieve rapid rotation adjustment of the carriage plate, a user does not need to disassemble the carriage plate to adjust the carriage plate, on one hand, machining marks caused by repeated clamping are avoided, and the machining efficiency is improved. And on the other hand, worker operation is facilitated, and the welding efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of carriage welding, and in particular to a positioning device for carriage welding processing and a use method thereof. Background Art

[0002] The truck compartment is formed by welding multiple compartment plates. During the production and processing of the compartment plates, multiple steps such as forging, bending, and welding are required. During the welding process, the compartment plates are usually welded by welding equipment.

[0003] The existing patent (Announcement No.: CN115945852B) discloses a positioning device for carriage welding processing, including a workbench, a welding structure, a positioning structure, a supporting structure, a fixing structure and a limiting structure. The positioning structure is convenient for positioning the carriage plate, so that the welding structure can weld the carriage plate, and at the same time, the position of the fixing structure can be quickly adjusted. The fixing structure is convenient for quickly fixing the carriage plate, avoiding the displacement of the carriage plate during welding, improving stability, and also improving the fixing efficiency and operational flexibility. The supporting structure is convenient for cooperating with the crane to turn over the carriage plate, improving safety. The limiting structure is convenient for fixing the supporting structure, so that the supporting structure and the crane can cooperate to turn over the carriage plate. The above-mentioned prior art requires the disassembly of the carriage plate to perform horizontal rotation adjustment, which is inconvenient to use. The carriage plate also needs to be disassembled before the lifting adjustment by the hoist, and the hoisting of the carriage plate has safety hazards.

[0004] In view of this, we propose a positioning device for carriage welding processing and a method of use. Summary of the invention

[0005] The purpose of the present invention is to provide a positioning device for car body welding processing and a method for using the positioning device, so as to solve the problems in the above background technology that the prior art requires the removal of the car body plate for horizontal rotation adjustment, which is inconvenient to use, and the car body plate also needs to be removed before flipping and adjusting by the sling, and there are safety hazards when the sling lifts the car body plate. In order to achieve the above purpose, the present invention provides the following technical solutions: A positioning device for car body welding processing, comprising a welding table, a C-shaped bracket is provided on the welding table, and connecting columns are provided at both ends of the bracket, and the opposite ends of the two connecting columns are fixedly connected to a pressure plate, and the pressure plate is threaded with a fixing bolt.

[0006] A translator is arranged between the connecting column and the bracket.

[0007] The rotator includes round seats fixedly connected to both ends of the bracket, and a slide groove is provided inside the round seat. Two opposite sides of the round seat surfaces are provided with through openings connected to the slide groove on the same side. A slide seat is slidably connected in the slide groove, and a column hole is provided on the surface of the slide seat. The connecting column is rotatably connected in the slide seat, and the connecting column extends from the through opening to the outside.

[0008] Two vertical shafts are fixedly provided on the side of the top of the slide seat away from the bracket, and the two vertical shafts are rotatably connected with clamps, an extrusion block is fixedly provided on the end of the clamp away from the vertical shaft, and a triangular groove matching the extrusion block is opened on the side of the inner wall of the slide groove close to the bracket.

[0009] The extrusion block, the bracket and the welding table are provided with a turning assembly.

[0010] Preferably, the flip assembly includes a rotating hole opened on the side surface of the welding table, and the side surface of the welding table is provided with four locking holes, and the four locking holes are arranged in a circular equidistant array along the rotating hole.

[0011] The bracket is rotatably connected in the rotating hole, and two embedding grooves are provided on the side of the bracket surface opposite to the locking hole. A locking block matching the locking hole is slidably connected in the embedding groove, and a spring is arranged in the embedding groove, and the spring pushes the locking block to embed into the locking hole.

[0012] The bracket has two inner holes, and the two inner holes are respectively connected to the embedding groove and the triangular groove on the same side. A sliding sleeve is slidably connected in the inner hole, and one end of the sliding sleeve is fixedly connected to the locking block. A rotating pin is rotatably connected to the inside of one end of the sliding sleeve relative to the extrusion block, and the surfaces of the sliding sleeve and the bracket are provided with cutouts for moving the rotating pin.

[0013] A hook is fixedly arranged at the end of the extrusion block, and buckles matched with the hook are fixedly arranged on both sides of the rotating pin.

[0014] The round seat is provided with a safety detection component matched with the extrusion block.

[0015] Preferably, the safety detection component is a gas disc fixedly arranged along the round seat surface on the side opposite to the pressure plate, and the outer ring of the gas disc is provided with a plurality of through holes, the interior of the through holes is slidably connected with a slide cylinder, and a micro fan is arranged inside the slide cylinder.

[0016] An annular groove is provided inside the gas disk, and an ejector pin is fixedly connected to the slide cylinder, and the ejector pin extends into the annular groove through the through hole, and a cone ring matching with the ejector pin is slidably connected in the annular groove, and a top spring is provided at the bottom of the annular groove, and the top spring pushes the cone ring to move upward, and a latch is fixedly provided at the bottom of the cone ring, and the latch penetrates the gas disk and the round seat to extend into the triangular groove, and the latch is located between the two extrusion blocks.

[0017] Preferably, the inner ring of the clamp is fixedly connected with a friction block, and the friction block is installed by bolts.

[0018] Preferably, the surface of the rotating pin is provided with anti-slip grooves along the cutout.

[0019] Preferably, the hooks are arranged along the side surface of the end of the extrusion block, and the two hooks are staggered.

[0020] Preferably, a through groove communicating with the through hole is provided on the surface of the air disk, and a wire seat cooperating with the micro fan is fixedly provided on the surface of the slide cylinder, and the wire seat is slidably connected in the through groove.

[0021] A method for using a positioning device for carriage welding processing comprises the following steps: S1. Place the carriage plate between two pressure plates, rotate the fixing bolt to fix it, and then weld the carriage plate on the welding table; S2. Pull the carriage plate to the side away from the triangular groove, so that the carriage plate, the pressure plate and the connecting column are displaced along the slide groove through the slide seat. During this process, the extrusion block is pulled out of the triangular groove, the clamp and the extrusion block release the extrusion and engagement along the triangular groove, and the clamp locks the connecting column. At this time, the connecting column and the pressure plate can drive the carriage plate to rotate and reverse along the horizontal plane along the slide seat. After the reversal is completed, push the carriage plate and the slide seat to reset and lock it again; S3, rotate the rotating pin along the cutout to make the buckle engage with the hook, then pull the carriage plate and the sliding seat to move, because the extrusion block is locked by the buckle, and the unlocking connecting column cannot be released, and in this process, the displaced sliding seat uses the extrusion block to pull the sliding sleeve along the buckle to move synchronously, and pull the locking block out of the locking hole, so that the bracket is unlocked along the welding table, and the carriage plate can be turned over by the bracket along the rotating hole; S4. When the carriage plate is pulled to perform the unlocking operation, the micro fan starts and sprays air along the through hole. When the entity is located in the path range of the rotation and flipping of the carriage plate, the airflow is blocked and a reverse thrust is generated to push the micro fan to move, and the cone ring is pushed down by the ejector pin, so that the pin is inserted between the two extrusion blocks. At this time, the extrusion block cannot be pulled out of the triangular groove, and the unlocking operation cannot be performed.

[0022] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the carriage plate is pulled so that the carriage plate, the pressure plate and the connecting column are displaced along the slide groove through the slide seat. During this process, the extrusion block is pulled out of the triangular groove, the clamp and the extrusion block release the extrusion and clamping along the triangular groove, and the locking of the connecting column by the clamp is cancelled. At this time, the connecting column and the pressure plate can drive the carriage plate to rotate and reverse along the horizontal plane along the slide seat. After the reversal is completed, the carriage plate and the slide seat are pushed to reset and can be locked again. Compared with the existing integrated fixation of the carriage plate along the desktop, the extrusion block cooperates with the triangular groove to fix and unlock the pressure plate and the carriage plate, so as to realize the rapid rotation adjustment of the carriage plate. The user does not need to disassemble the carriage plate for adjustment. On the one hand, it avoids processing marks caused by repeated clamping, and on the other hand, it is convenient for workers to work and improves welding efficiency.

[0023] In the present invention, the buckle is engaged with the hook by toggling the rotating pin to pull the car plate and the sliding seat to move. Since the extrusion block is locked by the buckle, the unlocking connecting column cannot be loosened, and in this process, the displaced sliding seat uses the extrusion block to pull the sliding sleeve along the buckle to synchronously move, and the locking block is pulled out of the locking hole, so that the bracket is unlocked along the welding table, and the car plate can be turned over by the bracket along the rotating hole. Compared with the existing method of lifting the car plate with a hoist and then pushing it to turn, the above-mentioned buckle cooperates with the hook to switch the pulling and unlocking of the car plate from the connecting column to the bracket. On the one hand, it avoids the possibility of increasing scratches again by reciprocating clamping, and on the other hand, the unlocking processes of the two parts can be used as insurance for each other, that is, the two unlocking and adjustment operations can only be performed one by one, avoiding safety hazards caused by excessive disengagement of the car plate from the constraint.

[0024] In the present invention, airflow is ejected along the through hole by the micro-fan. When the micro-fan is physically located in the path range of rotation and flipping of the carriage plate, the airflow is blocked to generate reverse thrust to push the micro-fan to move, and the cone ring is pushed downward by the ejector pin so that the latch is inserted between the two extrusion blocks. At this time, the extrusion block cannot be pulled out of the triangular groove and the unlocking operation cannot be performed. Compared with the existing unprotected direct flipping of the carriage plate, the micro-motor can use the airflow and the motion range of the carriage plate for overlap detection, and stop the unlocking and adjusting operation when there is an obstruction on the motion path of the carriage plate. On the one hand, it can prevent the rotating and flipping carriage plate from injuring workers and equipment, and on the other hand, it can also prevent collision damage to the carriage plate, thereby having better operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the structure of the bracket and the rotating hole of the present invention; Figure 3 An exploded view of the embedding groove and the locking block of the present invention; Figure 4 It is a three-dimensional structural cross-sectional view of the gas disk of the present invention; Figure 5 For the present invention Figure 4 The enlarged view of point A in the middle; Figure 6 It is a three-dimensional structural cross-sectional view of the round seat of the present invention; Figure 7 For the present invention Figure 6 The enlarged view of point B in the middle; Figure 8 It is an exploded view of the connecting column, the sliding seat and the clamp of the present invention; Fig. 9 It is a three-dimensional structural cross-sectional view of the slide groove, triangular groove and inner hole of the present invention; Fig.10 It is a schematic diagram of the structure of the hook and buckle of the present invention.

[0026] In the figure: 1, welding table; 2, bracket; 3, connecting column; 4, pressure plate; 5, fixing bolt; 6, translator; 61, round seat; 62, slide groove; 63, through port; 64, slide seat; 65, column hole; 66, vertical axis; 67, clamp; 68, extrusion block; 69, triangular groove; 610, flip assembly; 6101, rotation hole; 6102, locking hole; 6103, embedded groove; 6104, locking block; 6105, spring; 6106, Inner hole; 6107, sleeve; 6108, rotating pin; 6109, incision; 61010, hook; 61011, buckle; 61012, safety detection component; 610121, air disk; 610122, through hole; 610123, slide cylinder; 610124, micro fan; 610125, ring groove; 610126, ejector pin; 610127, cone ring; 610128, ejector spring; 610129, latch. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technical staff in this field without creative work are within the scope of protection of the present invention.

[0028] See also Figures 1 to 10 The present invention provides a technical solution: a positioning device for car body welding processing, comprising a welding table 1, a bracket 2 with a C-shaped structure is arranged on the welding table 1, and connecting columns 3 are arranged at both ends of the bracket 2, and the opposite ends of the two connecting columns 3 are fixedly connected with pressure plates 4, and the pressure plates 4 are threadedly connected with fixing bolts 5. The car body plate is placed between the two pressure plates 4, and the fixing bolts 5 are rotated to fix it, and then the car body plate can be welded on the welding table 1.

[0029] A translator 6 is provided between the connecting column 3 and the bracket 2 .

[0030] The rotator 6 includes round seats 61 respectively fixedly connected to the two ends of the bracket 2, and a slide groove 62 is opened inside the round seat 61, and a through hole 63 connected to the slide groove 62 on the same side is opened on the opposite side of the surface of the two round seats 61. A slide seat 64 is slidably connected in the slide groove 62. Pulling the car plate to the side away from the triangular groove 69 can make the car plate, the pressure plate 4, and the connecting column 3 move along the slide groove 62 through the slide seat 64, and a column hole 65 is opened on the surface of the slide seat 64. The connecting column 3 is rotatably connected in the slide seat 64, and the connecting column 3 extends from the through hole 63 to the outside.

[0031] Two vertical shafts 66 are fixedly provided on the side of the top of the slide 64 away from the bracket 2, and a clamp 67 is rotatably connected to the two vertical shafts 66. An extrusion block 68 is fixedly provided on the end of the clamp 67 away from the vertical shaft 66. A triangular groove 69 matching the extrusion block 68 is provided on the inner wall of the slide 62 close to the bracket 2. During the displacement of the slide 64 along the slide 62, the extrusion block 68 is pulled out of the triangular groove 69, and the clamp 67 and the extrusion block 68 release the extrusion engagement along the triangular groove 69, and the locking of the connecting column 3 by the clamp 67 is cancelled. At this time, the connecting column 3 and the pressure plate 4 can drive the car plate to rotate and reverse along the horizontal plane along the slide 64. After the reversal is completed, the car plate and the slide 64 are pushed to reset and can be locked again.

[0032] A turning assembly 610 is disposed on the extrusion block 68 , the bracket 2 and the welding table 1 .

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the flip assembly 610 includes a rotation hole 6101 opened on the side surface of the welding table 1, and four locking holes 6102 are opened on the side surface of the welding table 1. The four locking holes 6102 are arranged in a circular equidistant array along the rotation hole 6101.

[0034] The bracket 2 is rotatably connected in the rotating hole 6101, and two embedding grooves 6103 are provided on the side of the surface of the bracket 2 opposite to the locking hole 6102. A locking block 6104 matching the locking hole 6102 is slidably connected in the embedding groove 6103, and a spring 6105 is provided in the embedding groove 6103. The spring 6105 pushes the locking block 6104 to embed into the locking hole 6102. The car body panel can be flipped along the rotating hole 6101 through the bracket 2, and the locking block 6104 embedded in the locking hole 6102 will lock the bracket 2 along the welding table 1.

[0035] Two inner holes 6106 are provided inside the bracket 2, and the two inner holes 6106 are respectively connected to the embedding groove 6103 and the triangular groove 69 on the same side, a sliding sleeve 6107 is slidably connected inside the inner hole 6106, and one end of the sliding sleeve 6107 is fixedly connected to the locking block 6104, and the inner end of the sliding sleeve 6107 is rotatably connected to the extrusion block 68 with a rotating pin 6108, and the surfaces of the sliding sleeve 6107 and the bracket 2 are provided with a cutout 6109 for moving the rotating pin 6108.

[0036] A hook 61010 is fixedly provided at the end of the extrusion block 68, and buckles 61011 matching the hook 61010 are fixedly provided on both sides of the rotating pin 6108. The rotating pin 6108 is rotated along the incision 6109 to make the buckle 61011 engage or disconnect with the hook 61010. When the buckle 61011 is engaged with the hook 61010, the car plate and the slide 64 are pulled to move. Since the extrusion block 68 is locked by the buckle 61011, the unlocking connecting column 3 cannot be released. In this process, the displaced slide 64 uses the extrusion block 68 to pull the sliding sleeve 6107 along the buckle 61011 for synchronous displacement, and the locking block 6104 is pulled out of the locking hole 6102.

[0037] A safety detection component 61012 that cooperates with the extrusion block 68 is provided on the round seat 61.

[0038] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the safety detection component 61012 is fixedly arranged on the side of the round seat 61 opposite to the pressure plate 4, and the outer ring of the air disc 610121 is provided with a plurality of through holes 610122, the interior of the through hole 610122 is slidably connected with a slide cylinder 610123, and the slide cylinder 610123 is provided with a micro fan 610124. The micro fan 610124 is started and sprays airflow along the through hole 610122. When the entity is located in the path range of rotation and flipping of the car body plate, the airflow is blocked to generate reverse thrust to push the micro fan 610124 to move.

[0039] The gas disc 610121 is provided with an annular groove 610125 inside, a pin 610126 is fixedly connected to the slide 610123, and the pin 610126 extends through the through hole 610122 to the annular groove 610125, a cone ring 610127 matching the pin 610126 is slidably connected in the annular groove 610125, and a top spring 610128 is provided at the bottom of the annular groove 610125, and the top spring 610128 pushes the cone ring 610127 to move upward, and the cone ring 610127 is provided with a top spring 610128 to push ... A latch 610129 is fixedly provided at the bottom of 10127. The latch 610129 penetrates the air disk 610121 and the round seat 61 and extends into the triangular groove 69. The latch 610129 is located between the two extrusion blocks 68. When the micro-blower 610124 is displaced, the ejector pin 610126 is used to push the cone ring 610127 downward, so that the latch 610129 is inserted between the two extrusion blocks 68. At this time, the extrusion block 68 cannot be pulled out of the triangular groove 69, and the unlocking operation cannot be performed.

[0040] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the inner ring of the clamp 67 is fixedly connected with a friction block, and the friction block is installed by bolts. When the clamp 67 locks the connecting column 3, the friction block is used for contact, which is convenient for the user to replace the worn parts later.

[0041] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the surface of the rotating pin 6108 is provided with anti-skid grooves along the cutout 6109 , so that the user can more stably rotate the rotating pin 6108 along the anti-skid grooves to avoid contact and slipping.

[0042] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10 As shown, the hook 61010 is arranged along the side surface of the end of the extrusion block 68, and the two hooks 61010 are staggered with each other, so that the buckles 61011 on both sides of the rotating pin 6108 can be connected and released with the hook 61010 during the circular motion.

[0043] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figures 5 to 10As shown, a through groove connected to the through hole 610122 is provided on the surface of the air disk 610121, and a wire seat matching with the micro fan 610124 is fixedly arranged on the surface of the slide cylinder 610123, and the wire seat is slidably connected in the through groove, and the external power line and control line are plugged into the wire seat and connected to the micro fan 610124. At the same time, the through groove connects the two ends of the through hole 610122 with the outside for the micro fan 610124 to exhaust air.

[0044] A method for using a positioning device for carriage welding processing comprises the following steps: S1. Place the carriage plate between the two pressure plates 4, rotate the fixing bolt 5 to fix it, and then weld the carriage plate on the welding table 1.

[0045] S2. Pull the car plate to the side away from the triangular groove 69, so that the car plate, the pressure plate 4 and the connecting column 3 are displaced along the slide groove 62 through the slide seat 64. During this process, the extrusion block 68 is pulled out of the triangular groove 69, the clamp 67 and the extrusion block 68 release the extrusion and engagement along the triangular groove 69, and the locking of the connecting column 3 by the clamp 67 is cancelled. At this time, the connecting column 3 and the pressure plate 4 can drive the car plate to rotate and reverse along the horizontal plane along the slide seat 64. After the reversal is completed, push the car plate and the slide seat 64 to reset and lock it again.

[0046] S3. Move the rotating pin 6108 along the incision 6109 to rotate, so that the buckle 61011 is engaged with the hook 61010. At this time, the car body plate and the slide 64 are pulled to move. Since the extrusion block 68 is locked by the buckle 61011, it cannot be loosened to unlock the connecting column 3. In this process, the displaced slide 64 uses the extrusion block 68 to pull the sliding sleeve 6107 along the buckle 61011 to move synchronously, and pull the locking block 6104 out of the locking hole 6102, so that the bracket 2 is unlocked along the welding table 1, and the car body plate can be flipped along the rotating hole 6101 through the bracket 2.

[0047] S4. When the carriage plate is pulled to perform the unlocking operation, the micro fan 610124 is started and air is ejected along the through hole 610122. When the entity is located in the path range of the rotation and flipping of the carriage plate, the airflow is blocked and a reverse thrust is generated to push the micro fan 610124 to move, and the ejector pin 610126 is used to push the cone ring 610127 downward, so that the latch 610129 is inserted between the two extrusion blocks 68. At this time, the extrusion block 68 cannot be pulled out of the triangular groove 69, and the unlocking operation cannot be performed.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. Technical personnel in this industry should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only preferred examples of the present invention and are not used to limit 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A positioning device for carriage welding processing, comprising a welding table (1), characterized in that: The welding table (1) is provided with a bracket (2) of a C-shaped structure, and connecting columns (3) are provided at both ends of the bracket (2), and opposite ends of the two connecting columns (3) are fixedly connected to a pressure plate (4), and a fixing bolt (5) is threadedly connected to the pressure plate (4); A translator (6) is provided between the connecting column (3) and the bracket (2); The translator (6) comprises round seats (61) respectively fixedly connected to the two ends of the bracket (2), and a slide groove (62) is provided inside the round seat (61), and a through hole (63) communicating with the slide groove (62) on the same side is provided on the opposite side of the surface of the two round seats (61), a slide seat (64) is slidably connected in the slide groove (62), and a column hole (65) is provided on the surface of the slide seat (64), and the connecting column (3) is rotatably connected in the slide seat (64), and the connecting column (3) extends from the through hole (63) to the outside; Two vertical shafts (66) are fixedly provided on a side of the top of the slide seat (64) away from the bracket (2), and a clamp (67) is rotatably connected to each of the two vertical shafts (66); an extrusion block (68) is fixedly provided on one end of the clamp (67) away from the vertical shaft (66); and a triangular groove (69) matching the extrusion block (68) is provided on a side of the inner wall of the slide groove (62) close to the bracket (2); A turning assembly (610) is provided on the extrusion block (68), the bracket (2) and the welding table (1).

2. A positioning device for carriage welding processing according to claim 1, characterized in that: The flip assembly (610) comprises a rotation hole (6101) formed on the side surface of the welding platform (1), and the side surface of the welding platform (1) is provided with four locking holes (6102), the four locking holes (6102) being arranged in a circular equidistant array along the rotation hole (6101); The bracket (2) is rotatably connected in the rotating hole (6101), and two embedding grooves (6103) are provided on a side of the surface of the bracket (2) opposite to the locking hole (6102), and a locking block (6104) matching the locking hole (6102) is slidably connected in the embedding groove (6103), and a spring (6105) is provided in the embedding groove (6103), and the spring (6105) pushes the locking block (6104) to embed in the locking hole (6102); The bracket (2) has two inner holes (6106) formed therein, and the two inner holes (6106) are respectively connected to the embedding groove (6103) and the triangular groove (69) on the same side; a sliding sleeve (6107) is slidably connected to the inner hole (6106); one end of the sliding sleeve (6107) is fixedly connected to the locking block (6104); one end of the sliding sleeve (6107) is rotatably connected to the extrusion block (68); a rotating pin (6108) is rotatably connected to the inner side of the sliding sleeve (6107) and the bracket (2); and a notch (6109) for moving the rotating pin (6108) is formed on the surfaces of the sliding sleeve (6107) and the bracket (2); A hook (61010) is fixedly provided at the end of the extrusion block (68), and buckles (61011) matching the hook (61010) are fixedly provided on both sides of the rotating pin (6108); The round seat (61) is provided with a safety detection component (61012) that matches the extrusion block (68).

3. A positioning device for carriage welding processing according to claim 2, characterized in that: The safety detection component (61012) is a gas disc (610121) fixedly arranged along the surface of the round seat (61) on the side opposite to the pressure plate (4), and the outer ring of the gas disc (610121) is provided with a plurality of through holes (610122), the interior of the through hole (610122 is slidably connected with a slide cylinder (610123), and a micro fan (610124) is arranged inside the slide cylinder (610123); The gas disk (610121) is provided with an annular groove (610125) inside, the slide cylinder (610123) is fixedly connected with an ejector pin (610126), and the ejector pin (610126) passes through the through hole (610122) and extends into the annular groove (610125), and a cone ring (610127) matching with the ejector pin (610126) is slidably connected in the annular groove (610125), and the annular groove (610125) is provided with an ejector pin (610126) and an ejector pin (610126) is fixedly connected with the slide cylinder (610123), and the ejector pin (610126) passes through the through hole (610122) and extends into the annular groove (610125), and the annular groove (610125) is provided with an ejector pin (610126) and an ejector pin (610126) is fixedly connected with the slide cylinder (610123), and the ... A top spring (610128) is provided at the bottom of the cone ring (610125), and the top spring (610128) pushes the cone ring (610127) to move upward, and a latch (610129) is fixedly provided at the bottom of the cone ring (610127), and the latch (610129) passes through the air disk (610121) and the round seat (61) and extends into the triangular groove (69), and the latch (610129) is located between the two extrusion blocks (68).

4. A positioning device for carriage welding processing according to claim 1, characterized in that: The inner ring of the clamp (67) is fixedly connected to a friction block, and the friction block is installed by bolts.

5. A positioning device for carriage welding processing according to claim 2, characterized in that: The surface of the rotating pin (6108) is provided with anti-slip grooves along the cutout (6109).

6. A positioning device for carriage welding processing according to claim 2, characterized in that: The hooks (61010) are arranged along the side surface of the end of the extrusion block (68), and the two hooks (61010) are arranged in a staggered manner.

7. A positioning device for carriage welding processing according to claim 3, characterized in that: The surface of the air disk (610121) is provided with a through groove connected to the through hole (610122), and the surface of the slide cylinder (610123) is fixedly provided with a wire seat that matches the micro fan (610124), and the wire seat is slidably connected in the through groove.

8. A method for using a positioning device for car body welding processing, using the method for using a positioning device for car body welding processing according to any one of claims 1 to 7, characterized in that: The steps include: S1, placing the carriage plate between two pressure plates (4), rotating the fixing bolt (5) to fix it, and then welding the carriage plate on the welding table (1); S2, pull the carriage plate to the side away from the triangular groove (69), so that the carriage plate, the pressure plate (4), and the connecting column (3) are displaced along the slide groove (62) through the slide seat (64). During this process, the extrusion block (68) is pulled out of the triangular groove (69), the clamp (67) and the extrusion block (68) release the extrusion and engagement along the triangular groove (69), and the clamp (67) is released from the locking of the connecting column (3). At this time, the connecting column (3) and the pressure plate (4) can drive the carriage plate along the slide seat (64) to rotate and reverse along the horizontal plane. After the reversal is completed, the carriage plate and the slide seat (64) are pushed to reset and can be locked again; S3, the rotating pin (6108) is rotated along the notch (6109) so that the buckle (61011) is engaged with the hook (61010), and the carriage plate and the slide seat (64) are displaced. Since the extrusion block (68) is locked by the buckle (61011), the unlocking connecting column (3) cannot be released. In this process, the displaced slide seat (64) uses the extrusion block (68) to pull the sliding sleeve (6107) along the buckle (61011) to move synchronously, and the locking block (6104) is pulled out of the locking hole (6102), so that the bracket (2) is unlocked along the welding table (1), and the carriage plate can be turned over along the rotating hole (6101) through the bracket (2); S4. When the carriage plate is pulled to perform an unlocking operation, the micro fan (610124) is started and an airflow is ejected along the through hole (610122). When the body is physically located in the path range of the rotation and flipping of the carriage plate, the airflow is blocked and a reverse thrust is generated to push the micro fan (610124) to move, and the ejector pin (610126) is used to push the cone ring (610127) downward, so that the latch (610129) is inserted between the two extrusion blocks (68). At this time, the extrusion block (68) cannot be pulled out of the triangular groove (69), and the unlocking operation cannot be performed.

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