Welding fixture for automobile seat production

Abstract

The invention relates to a welding fixture for automobile seat production, the welding fixture comprises a base, an M assembling mechanism, an N assembling mechanism, an X assembling mechanism, a Y assembling mechanism and a Z assembling mechanism are arranged on the base, the M assembling mechanism is used for clamping a left connecting plate, the N assembling mechanism is used for clamping a right connecting plate, the X assembling mechanism is used for clamping an unlocking box, and the Y assembling mechanism is used for clamping a right connecting plate. The Y assembling mechanism is used for clamping the connecting plate, the Z assembling mechanism is used for clamping the framework body, and the welding portions among the left connecting plate, the right connecting plate, the unlocking box, the connecting plate and the framework body clamped on the welding clamp are in a to-be-welded state. According to the scheme provided by the invention, each component can be reliably clamped, and the welding quality and the welding efficiency are improved.

Description

Technical Field

[0001] This invention relates to the field of vehicle body parts manufacturing, and more specifically to a welding fixture for automobile seat manufacturing. Background Technology

[0002] Automotive seats are manufactured by welding various components together. By rationally allocating the welding sequence and combining multiple components for welding, processing efficiency and production costs can be effectively improved. For welding multiple components together, appropriate fixtures are needed during processing to clamp the workpieces and ensure smooth assembly and welding. For example... Figure 1 As shown, the left connecting plate, right connecting plate, unlocking box, and connecting plate can be combined and welded to the frame body, but there is currently no fixture that can realize this welding process, so this problem needs to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide a welding fixture for automobile seat production, which can reliably clamp the left connecting plate, right connecting plate, unlocking box, connecting plate parts and frame body, thereby improving automobile seat production efficiency and reducing production costs.

[0004] The technical solution adopted in this invention is as follows.

[0005] A welding fixture for automobile seat production is characterized in that: the welding fixture includes a base, on which are provided an M assembly mechanism, an N assembly mechanism, an X assembly mechanism, a Y assembly mechanism, and a Z assembly mechanism. The M assembly mechanism is used to clamp the left connecting plate, the N assembly mechanism is used to clamp the right connecting plate, the X assembly mechanism is used to clamp the unlocking box, the Y assembly mechanism is used to clamp the connecting plate, and the Z assembly mechanism is used to clamp the frame body. The welding parts between the left connecting plate, the right connecting plate, the unlocking box, the connecting plate, and the frame body clamped on the welding fixture are in a state of waiting to be welded.

[0006] The specific design is as follows: The skeleton body includes a central tube and four tubes forming a U-shape: a left tube, a right tube, a front tube, and a rear tube. All tubes—left, right, front, rear, and central—are square tubes. The left and right tubes are arranged opposite each other, as are the front and rear tubes. The direction of the distance between the left and right tubes is denoted as the X-direction, and the direction of the distance between the rear and front tubes is denoted as the Y-direction. The central tube is arranged along the Y-direction, and its two ends are connected to the middle of the front and rear tubes, respectively. The unlocking box includes a square groove with its opening along the X-direction. The upper groove wall extends and overlaps the upper surface of the left tube. The opening edges of the front and rear groove walls of the groove are connected to the left... The outer surfaces of the tubes abut against each other. The groove edge of the lower groove wall on the groove body is bent upward to the upper groove wall side to form an upward flange. A first gap is provided in the middle of the junction of the groove bottom and the upper groove wall on the groove body. The first gap extends to the middle of the groove bottom and the middle of the upper groove wall respectively. A second gap is provided at the junction of the upper groove wall and the front groove wall. A third gap is provided at the junction of the upper groove wall and the rear groove wall. Two positioning holes are also provided on the groove bottom, which are spaced apart along the Y direction. The two positioning holes are located on the two outer sides of the first gap. The X assembly mechanism includes an X support component that supports the unlocking box, an X1 assembly part located on the outside of the unlocking box, and an X2 assembly part located on the inside of the unlocking box. The X1 assembly part and the X2 assembly part are used to restrict the movement of the unlocking box in the Y direction.

[0007] The X support assembly includes an X support block for supporting the lower tank wall. The X1 assembly includes an X1 assembly block that is movably installed along the X direction. The X1 assembly block is provided with an X positioning rod and two X positioning pins that are installed in a cantilevered manner. The two X positioning pins are respectively used to be inserted into two positioning holes for assembly. The cantilever end of the X positioning rod is used to abut against the outer side of the left tube for positioning. The X1 assembly block is connected to the piston rod of the X1 adjusting cylinder.

[0008] The X2 assembly includes an X2 abutment block that is movably mounted along the X direction. The X2 abutment block is used to abut and position the upward-flipped edge. The X2 abutment block is connected to the piston rod of the X2 adjusting cylinder.

[0009] A portion of the right connecting plate overlaps the junction of the right tube body and the rear tube body, while another portion extends to the outside of the frame body, forming a convex right protrusion. The right protrusion has a right assembly pin and a right positioning hole, with the right positioning hole positioned closer to the frame body than the right assembly pin. The N assembly mechanism includes an N support block supporting the right protrusion and an N clamping part clamping the right protrusion. The N support block has an N positioning pin for insertion and positioning with the right positioning hole, and the N clamping part includes an N clamping... The N clamping block and the N clamping adjustment mechanism for adjusting the state of the N clamping block are provided. The N clamping block is provided with an N hole for cooperating with the right assembly pin. The lower surface of the N clamping block is provided with a V-groove. The N clamping adjustment mechanism is composed of a flip adjustment mechanism, which includes a flip adjustment arm. The middle part of the flip adjustment arm is hinged to the support frame. One end of the flip adjustment arm serves as the mounting end. The other end of the flip adjustment arm is hinged to the piston rod of the flip adjustment cylinder. The piston rod of the flip adjustment cylinder is hinged to the support.

[0010] A portion of the left connecting plate overlaps the junction of the left tube and the rear tube, while another portion extends to the outside of the frame body to form a convex left protrusion. The left protrusion has a left assembly hole and a left positioning hole, with the left positioning hole positioned closer to the frame body than the left assembly hole. The M assembly mechanism includes an M support block that supports the left protrusion and an M clamping part that clamps the left protrusion. The M support block has an M positioning pin for insertion and positioning with the left positioning hole. The M clamping part includes an M clamping block and an M clamping adjustment mechanism for adjusting the state of the M clamping block. The M clamping block has an M assembly pin for engaging with the left assembly hole. The lower surface of the M clamping block has a V-groove. The M clamping adjustment mechanism is composed of a flip adjustment mechanism. 7. The welding fixture for automobile seat production according to claim 1, characterized in that: a portion of the connecting plate body is attached to the upper surface of the front tube body, and another portion of the plate body is located outside the front tube body, and the portion of the plate body is provided with two Y-assembly holes; the Y-assembly mechanism includes a Y-support assembly and a Y-clamping part for clamping the connecting plate body; the Y-support assembly includes a Y-support block for supporting the lower surface of the front tube body; a Y-abutting block and a Y1 support block are provided on both sides of the Y-support block; the Y-abutting block abuts against and is positioned against the inner wall of the front tube body; the Y1 support block is used to support the plate body of the connecting plate body located outside the front tube body; the Y-clamping part includes a Y-clamping block and a Y-clamping adjustment mechanism for adjusting the state of the Y-clamping block; the Y-clamping block is provided with a Y-assembly pin for cooperating with the Y-assembly holes; and the Y-clamping adjustment mechanism is composed of a flip adjustment mechanism.

[0011] The Z assembly mechanism includes a left assembly section, a right assembly section, a front assembly section, a rear assembly section, and a middle assembly section for clamping the left tube body, the right tube body, the front tube body, the rear tube body, and the middle tube body respectively. The front assembly section includes a first assembly unit and a second assembly unit arranged sequentially along the X direction. The first assembly unit clamps the end of the front tube body near the left tube body, and the second assembly unit clamps the middle part of the front tube body.

[0012] The rear assembly section includes a rear assembly unit, a rear assembly unit, and a rear assembly unit arranged sequentially along the X direction. The rear assembly unit includes a rear support base and a rear clamping assembly. The rear support base supports one end of the rear tube body and has a rear positioning block that abuts against the inner side of the rear tube body. The rear clamping assembly includes a rear adjusting member and a rear clamping block and a rear abutting block arranged on the rear adjusting member.

[0013] The left assembly section includes a left first assembly unit, a left second assembly unit, and a left third assembly unit arranged sequentially along the Y direction; the right assembly section includes a right first assembly unit and a right second assembly unit arranged sequentially along the Y direction; and the middle assembly section includes a middle first assembly unit and a middle second assembly unit arranged sequentially along the Y direction.

[0014] The above-mentioned solution provided by the present invention can reliably clamp the various components, thereby improving the welding quality and welding efficiency. Attached Figure Description

[0015] Figure 1 This is a structural schematic diagram of the product to be welded.

[0016] Figure 2 This is a schematic diagram of the structure of the present invention.

[0017] Figure 3 A schematic diagram of the structure for clamping the skeleton body.

[0018] Figure 4 This is a schematic diagram of the structure during welding for the invention.

[0019] Figure 5 This is a schematic diagram of the M assembly mechanism.

[0020] Figure 6 This is a schematic diagram of the N assembly mechanism.

[0021] Figure 7 This is a schematic diagram of the X assembly mechanism.

[0022] Figure 8 for Figure 7 A structural diagram from another perspective.

[0023] Figure 9 This is a schematic diagram of the Y-assembly mechanism.

[0024] Figure 10 This is a schematic diagram illustrating a specific implementation of the present invention.

[0025] Drawing number explanation: 00-Base, 10-Frame body, 11-Left connecting plate, 12-Right connecting plate, 13-Connecting plate, 14-Unlocking box, 21-M Clamping block, 22-M Clamping part, 23-M Support block, 31-N Clamping block, 32-N Clamping part, 33-N Support block, 41-X Positioning pin, 42-X1 Assembly block, 43-X Positioning rod, 44-X2 Abutting block, 45-X Support block, 51-First assembly unit, 52-Second assembly unit Unit, 53-plug-in positioning component, 54-rear assembly unit, 541-rear abutment block, 542-rear clamping block, 55-rear second assembly unit, 56-rear third assembly unit, 57-left first assembly unit, 58-left second assembly unit, 59-left third assembly unit, 60-right first assembly unit, 61-right second assembly unit, 62-middle first assembly unit, 63-middle second assembly unit, 71-Y support component, 72-Y clamping part, 73-Y clamping block. Detailed Implementation

[0026] To make the objectives and advantages of this invention clearer, the invention will be specifically described below with reference to embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of the invention and does not strictly limit the scope of protection specifically claimed by the invention.

[0027] As used herein, the terms “parallel,” “perpendicular,” and the like are not limited to their strict geometric definitions, but include tolerances for reasonable and inconsistent machining or human errors.

[0028] like Figure 1 , 2 As shown in Figures 3 and 4, a welding fixture for automobile seat production includes a base 00. The base 00 is equipped with an M assembly mechanism, an N assembly mechanism, an X assembly mechanism, a Y assembly mechanism, and a Z assembly mechanism. The M assembly mechanism clamps the left connecting plate 11, the N assembly mechanism clamps the right connecting plate 12, the X assembly mechanism clamps the unlocking box 14, the Y assembly mechanism clamps the connecting plate 13, and the Z assembly mechanism clamps the frame body 10. The welding joints between the left connecting plate 11, right connecting plate 12, unlocking box 14, connecting plate 13, and frame body 10 clamped on the welding fixture are in a state of waiting to be welded. This "state of waiting to be welded" means that the joints to be welded are not obstructed, allowing the welding torch to perform welding. By setting up the welding fixture with the above structure, reliable clamping between the left connecting plate 11, right connecting plate 12, unlocking box 14, connecting plate 13, and frame body 10 can be achieved, improving production efficiency and reducing production costs.

[0029] Furthermore: The skeleton body 10 includes a central tube and left, right, front, and rear tubes that enclose a U-shaped structure. The left, right, front, rear, and central tubes are all square tubes. The left and right tubes are arranged opposite each other, as are the front and rear tubes. The direction of the distance between the left and right tubes is denoted as the X direction, and the direction of the distance between the rear and front tubes is denoted as the Y direction. The central tube is arranged along the Y direction, and its two ends are connected to the middle of the front and rear tubes, respectively. The unlocking box 14 includes a square groove with its opening arranged along the X direction. The upper groove wall extends and overlaps the upper surface of the left tube. The opening edges of the front and rear groove walls of the groove and the left tube... The outer sides abut against each other. The groove edge of the lower groove wall on the groove body is bent upward to the groove wall side to form an upward flange. A first gap is provided in the middle of the junction of the groove bottom and the upper groove wall on the groove body. The first gap extends to the middle of the groove bottom and the middle of the upper groove wall respectively. A second gap is provided at the junction of the upper groove wall and the front groove wall. A third gap is provided at the junction of the upper groove wall and the rear groove wall. Two positioning holes are also provided on the groove bottom, which are spaced apart along the Y direction. The two positioning holes are located on the two outer sides of the first gap. The X assembly mechanism includes an X support component that supports the unlocking box 14, an X1 assembly part located on the outside of the unlocking box 14, and an X2 assembly part located on the inside of the unlocking box 14. The X1 assembly part and the X2 assembly part are used to restrict the movement of the unlocking box 14 in the Y direction.

[0030] like Figure 7 , 8 As shown: The X-support assembly includes an X-support block 45 for supporting the lower tank wall. The X1 assembly part includes an X1 assembly block 42 movably installed along the X direction. The X1 assembly block 42 is provided with an X-positioning rod 43 and two X-positioning pins 41, which are respectively used for insertion and assembly with two positioning holes. The cantilevered end of the X-positioning rod 43 is used for abutting and positioning against the outer side of the left tube body. The X1 assembly block 42 is connected to the piston rod of the X1 adjusting cylinder. The X2 assembly part includes an X2 abutting block 44 movably installed along the X direction. The X2 abutting block 44 is used for abutting and positioning against the upward-flanged edge. The X2 abutting block 44 is connected to the piston rod of the X2 adjusting cylinder. Specifically, the X2 abutting block 44 is located on the lower side of the left tube body. The X assembly mechanism with the above structure can reliably meet the clamping requirements between the unlocking box 14 and the left tube body, and can achieve reliable and convenient welding between the two.

[0031] like Figure 5 , 6As shown: A portion of the right connecting plate 12 overlaps the junction of the right tube body and the rear tube body. Another portion of the right connecting plate 12 extends to the outside of the frame body 10, forming a convex right protrusion. The right protrusion is provided with a right assembly pin and a right positioning hole. The right positioning hole is located closer to the frame body 10 than the right assembly pin. The N assembly mechanism includes an N support block 33 that supports the right protrusion and an N clamping part 32 that clamps the right protrusion. The N support block 33 is provided with an N positioning pin for insertion and positioning with the right positioning hole. The N clamping part 32... The system includes an N-clamping block 31 and an N-clamping adjustment mechanism for adjusting the state of the N-clamping block 31. The N-clamping block 31 has an N-hole for engaging with the right assembly pin, and a V-groove is provided on its lower surface. The N-clamping adjustment mechanism consists of a flipping adjustment mechanism, which includes a flipping adjustment arm. The middle part of the flipping adjustment arm is hinged to a support frame, one end of which serves as the mounting end, and the other end of which is hinged to the piston rod of a flipping adjustment cylinder. The piston rod of the flipping adjustment cylinder is hinged to a support. By adjusting the N-clamping block 31 to flip it, reliable clamping of the right connecting plate 12 can be achieved, ensuring reliable welding between the right connecting plate 12 and the frame body 10. A portion of the left connecting plate 11 is attached to the junction of the left tube and the rear tube. Another portion of the left connecting plate 11 extends to the outside of the frame body 10 to form a convex left protrusion. The left protrusion has a left assembly hole and a left positioning hole. The left positioning hole is closer to the frame body 10 than the left assembly hole. The M assembly mechanism includes an M support block 23 that supports the left protrusion and an M clamping part 22 that clamps the left protrusion. The M support block 23 has an M positioning pin for insertion and positioning with the left positioning hole. The M clamping part 22 includes an M clamping block 21 and an M clamping adjustment mechanism for adjusting the state of the M clamping block 21. The M clamping block 21 has an M assembly pin for engaging with the left assembly hole. The lower surface of the M clamping block 21 has a V-groove. The M clamping adjustment mechanism is composed of a flip adjustment mechanism. By adjusting the M clamping block 21 to flip it, the left connecting plate 11 can be reliably clamped, ensuring reliable welding between the left connecting plate 11 and the frame body 10.

[0032] like Figure 9As shown: Part of the connecting plate 13 rests on the upper surface of the front tube body, while another part of the plate body is located outside the front tube body, and this part of the plate body has two Y-assembly holes. The Y-assembly mechanism includes a Y-support assembly 71 and a Y-clamping part 72 for clamping the connecting plate 13. The Y-support assembly 71 includes a Y-support block that supports the lower surface of the front tube body. Y-abutting blocks and Y1 support blocks are provided on both sides of the Y-support block. The Y-abutting blocks are positioned against the inner wall of the front tube body. The Y1 support blocks are used to support the plate body of the connecting plate 13 located outside the front tube body. The Y-clamping part 72 includes a Y-clamping block 73 and a Y-clamping adjustment mechanism for adjusting the state of the Y-clamping block 73. The Y-clamping block 73 is provided with Y-assembly pins for engaging with the Y-assembly holes. The Y-clamping adjustment mechanism is composed of a flip adjustment mechanism. The lower surface of the Y-clamping block 73 is designed in an inverted M-shape to improve the reliability of clamping the connecting plate 13. By adjusting the Y clamping block 73 to flip it, reliable clamping of the connecting plate 13 can be achieved, ensuring reliable welding between the connecting plate 13 and the frame body 10.

[0033] like Figure 2 , 3As shown in Figure 4, the Z assembly mechanism includes a left assembly section, a right assembly section, a front assembly section, a rear assembly section, and a middle assembly section for clamping the left tube body, the right tube body, the front tube body, the rear tube body, and the middle tube body, respectively. The front assembly section includes a first assembly unit 51 and a second assembly unit 52 arranged sequentially along the X direction. The first assembly unit 51 clamps the end of the front tube body near the left tube body, and the second assembly unit 52 clamps the middle part of the front tube body. The first assembly unit 51 and the second assembly unit 52 have the same structure. The first assembly unit 51 includes a first support base and a first clamping assembly. The first support base supports one end of the front tube body and has a first positioning block that abuts against the inner side of the front tube body. The first clamping assembly includes a first adjusting member and a first clamping block and a first abutting block installed on the first adjusting member. The first adjusting member is composed of a flipping adjustment mechanism. The first clamping block clamps the upper surface of the front tube body, and the first abutting block abuts against the outer side of the front tube body. The front tube body also has two assembly short tubes and two sets of insertion positioning assemblies 53 that are matched with the two assembly short tubes. One assembly short tube is located between the first assembly unit 51 and the second assembly unit 52, and the other assembly short tube is located between the connecting plate 13 and the right tube body. The insertion positioning assembly 53 includes an insertion rod that is movably arranged along the length direction of the assembly short tube. The insertion rod is connected to an insertion adjusting cylinder that adjusts its movement.The rear assembly section includes a first rear assembly unit 54, a second rear assembly unit 55, and a third rear assembly unit 56 arranged sequentially along the X direction. The first rear assembly unit 54 includes a rear support base and a rear clamping assembly. The rear support base supports one end of the rear tube and has a rear positioning block abutting against the inner surface of the rear tube. The rear clamping assembly includes a rear adjusting member and a rear clamping block 542 and a rear abutting block 541 disposed on the rear adjusting member. The rear adjusting member is composed of a flip-adjustment mechanism. The rear clamping block 542 is a long strip-shaped first clamping block. One end of the first clamping block clamps the upper surface of the end of the left connecting plate 11, and the other end clamps the upper surface of the rear tube. The rear abutting block 541 abuts against the left flange disposed on the left connecting plate 11, so that the left flange abuts against the outer surface of the rear tube. The second rear assembly unit 55 includes two rear support bases and two rear clamping assemblies. The two rear support bases support the middle of the rear tube. The rear two positioning blocks are provided for support and abut against the outer surface of the rear tube body. The rear two clamping components include rear two adjusting components and rear two clamping blocks provided on the rear two adjusting components. The rear two adjusting components are composed of a flipping adjustment mechanism. The rear two clamping blocks clamp the upper surface of the rear tube body. The rear three assembly unit 56 includes a rear three support base and a rear three clamping components. The rear three support base supports the other end of the rear tube body and provides rear three positioning blocks abutting against the inner surface of the rear tube body. The rear three clamping components include a rear three adjusting component and rear three clamping blocks and rear three abutting blocks provided on the rear three adjusting components. The rear three adjusting component is composed of a flipping adjustment mechanism. The rear three clamping blocks are composed of long strip-shaped second clamping blocks. One end of the second clamping block clamps the upper surface of the end of the right connecting plate 12, and the other end of the second clamping block clamps the upper surface of the rear tube body. The rear three abutting blocks are used to abut against the right flange provided on the right connecting plate 12 so that the right flange and the outer surface of the rear tube body are in contact. The lower surfaces of the first and second clamping blocks are inclined to facilitate the clamping of the rear tube, left connecting plate 11, and right connecting plate 12.The left assembly section includes a first left assembly unit 57, a second left assembly unit 58, and a third left assembly unit 59 arranged sequentially along the Y direction. The first left assembly unit 57 includes a first left support base and a first left clamping assembly. The first left support base supports one end of the left tube and has a first left positioning block abutting against the outer surface of the left tube. The first left clamping assembly includes a first left adjusting member and a first left clamping block and a first left abutting block. The first left adjusting member is composed of a flipping adjustment mechanism. The first left clamping block clamps the upper surface of the left tube, and the first left abutting block abuts against the inner surface of the left tube. The second left assembly unit 58 includes a second left support base and a second left clamping assembly. The second left assembly unit 59... The structure of unit 58 is the same as that of the seat assembly unit; the left third assembly unit 59 includes a left third support seat, which supports the other end of the left tube and has left third inner positioning blocks and left third outer positioning blocks that abut against the inner and outer sides of the left tube, respectively. The locking box is located between the left second support seat and the left third support seat; the right assembly part includes a right first assembly unit 60 and a right second assembly unit 61 arranged sequentially along the Y direction; the right first assembly unit 60 includes a right first support seat and a right first clamping assembly, the right first support seat supports one end of the right tube and has a right first positioning block that abuts against the inner side of the right tube, the right first clamping assembly includes a right first adjusting member and a right first adjusting member. The right clamping block on the section is composed of a right adjusting mechanism and clamps the upper surface of the right tube body. The right second assembly unit 61 includes a right second support base and a right second clamping assembly. The right second support base supports the other end of the right tube body and has a right second positioning block on it that abuts against the inner surface of the right tube body. The right second clamping assembly includes a right second adjusting component and a right second clamping block and a right second abutting block on the right second adjusting component. The right second adjusting component is composed of a right adjusting mechanism. The right second clamping block clamps the upper surface of the right tube body, and the right second abutting block abuts against the outer surface of the right tube body. The middle assembly part includes a middle first assembly unit 62 arranged sequentially along the Y direction. The second assembly unit 63 and the first assembly unit 62 include a first support base and a first clamping assembly. The first support base supports one end of the middle tube body and has a first inner positioning block and a first outer positioning block that abut against the inner and outer sides of the middle tube body, respectively. The first clamping assembly includes a first adjusting component and a first clamping block set on the first adjusting component. The first clamping block clamps the upper surface of the middle tube body. The first adjusting component includes a vertically arranged first lifting adjusting cylinder and a first rotating cylinder installed on the piston rod of the first lifting adjusting cylinder. The first clamping block is installed on the piston rod of the first rotating cylinder. The first assembly unit 62 and the second assembly unit 63 have the same structure.

[0034] The left assembly part, right assembly part, front assembly part, rear assembly part and middle assembly part of the above structure are used to reliably clamp the skeleton body 10 and ensure the reliability of welding.

[0035] In summary, the above-mentioned solution provided by the present invention can reliably clamp the left connecting plate 11, the right connecting plate 12, the unlocking box 14, the connecting plate 13 and the skeleton body 10, and achieve the effect of reliable and rapid welding between the components.

[0036] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A welding fixture for automobile seat production, characterized in that: The welding fixture includes a base, on which are mounted assembly mechanisms M, N, X, Y, and Z. The M assembly mechanism is used to clamp the left connecting plate, the N assembly mechanism is used to clamp the right connecting plate, the X assembly mechanism is used to clamp the unlocking box, the Y assembly mechanism is used to clamp the connecting plate, and the Z assembly mechanism is used to clamp the frame body. The welding joints between the left connecting plate, right connecting plate, unlocking box, connecting plate, and frame body clamped on the welding fixture are in a state of waiting to be welded.

2. The welding fixture for automobile seat production according to claim 1, characterized in that: The skeleton body includes a central tube and four tubes forming a U-shape: a left tube, a right tube, a front tube, and a rear tube. All tubes—left, right, front, rear, and central—are square tubes. The left and right tubes are arranged opposite each other, as are the front and rear tubes. The direction of the distance between the left and right tubes is denoted as the X-direction, and the direction of the distance between the rear and front tubes is denoted as the Y-direction. The central tube is arranged along the Y-direction, and its two ends connect to the middle of the front and rear tubes, respectively. The unlocking box includes a square groove with its opening along the X-direction. The upper groove wall extends and overlaps the upper surface of the left tube. The opening edges of the front and rear groove walls of the groove and the outer edge of the left tube... The sides abut against each other. The groove edge of the lower groove wall on the groove body is bent upward to the groove wall side to form an upward flange. A first gap is provided in the middle of the junction of the groove bottom and the upper groove wall on the groove body. The first gap extends to the middle of the groove bottom and the middle of the upper groove wall respectively. A second gap is provided at the junction of the upper groove wall and the front groove wall. A third gap is provided at the junction of the upper groove wall and the rear groove wall. Two positioning holes are also provided on the groove bottom, which are spaced apart along the Y direction. The two positioning holes are located on the two outer sides of the first gap. The X assembly mechanism includes an X support component that supports the unlocking box, an X1 assembly part located on the outside of the unlocking box, and an X2 assembly part located on the inside of the unlocking box. The X1 assembly part and the X2 assembly part are used to restrict the movement of the unlocking box in the Y direction.

3. The welding fixture for automobile seat production according to claim 2, characterized in that: The X support assembly includes an X support block for supporting the lower tank wall. The X1 assembly includes an X1 assembly block that is movably installed along the X direction. The X1 assembly block is provided with an X positioning rod and two X positioning pins that are installed in a cantilevered manner. The two X positioning pins are respectively used to be inserted into two positioning holes for assembly. The cantilever end of the X positioning rod is used to abut against the outer side of the left tube for positioning. The X1 assembly block is connected to the piston rod of the X1 adjusting cylinder.

4. The welding fixture for automobile seat production according to claim 3, characterized in that: The X2 assembly includes an X2 abutment block that is movably mounted along the X direction. The X2 abutment block is used to abut and position the upward-flipped edge. The X2 abutment block is connected to the piston rod of the X2 adjusting cylinder.

5. The welding fixture for automobile seat production according to claim 1, characterized in that: A portion of the right connecting plate overlaps the junction of the right tube body and the rear tube body, while another portion extends to the outside of the frame body, forming a convex right protrusion. The right protrusion has a right assembly pin and a right positioning hole, with the right positioning hole positioned closer to the frame body than the right assembly pin. The N assembly mechanism includes an N support block supporting the right protrusion and an N clamping part clamping the right protrusion. The N support block has an N positioning pin for insertion and positioning with the right positioning hole, and the N clamping part includes an N clamping... The N clamping block and the N clamping adjustment mechanism for adjusting the state of the N clamping block are provided. The N clamping block is provided with an N hole for cooperating with the right assembly pin. The lower surface of the N clamping block is provided with a V-groove. The N clamping adjustment mechanism is composed of a flip adjustment mechanism, which includes a flip adjustment arm. The middle part of the flip adjustment arm is hinged to the support frame. One end of the flip adjustment arm serves as the mounting end. The other end of the flip adjustment arm is hinged to the piston rod of the flip adjustment cylinder. The piston rod of the flip adjustment cylinder is hinged to the support.

6. The welding fixture for automobile seat production according to claim 1, characterized in that: A portion of the left connecting plate overlaps the junction of the left tube and the rear tube, while another portion extends to the outside of the frame body to form a convex left protrusion. The left protrusion has a left assembly hole and a left positioning hole, with the left positioning hole positioned closer to the frame body than the left assembly hole. The M assembly mechanism includes an M support block that supports the left protrusion and an M clamping part that clamps the left protrusion. The M support block has an M positioning pin for insertion and positioning with the left positioning hole. The M clamping part includes an M clamping block and an M clamping adjustment mechanism for adjusting the state of the M clamping block. The M clamping block has an M assembly pin for engaging with the left assembly hole. The lower surface of the M clamping block has a V-groove. The M clamping adjustment mechanism is composed of a flip adjustment mechanism.

7. The welding fixture for automobile seat production according to claim 1, characterized in that: One part of the connecting plate is attached to the upper surface of the front tube body, and the other part is located on the outside of the front tube body. This part of the plate has two Y-assembly holes. The Y-assembly mechanism includes a Y-support assembly and a Y-clamping part for clamping the connecting plate. The Y-support assembly includes a Y-support block for supporting the lower surface of the front tube body. Y-abutting blocks and Y1 support blocks are provided on both sides of the Y-support block. The Y-abutting blocks are positioned against the inner wall of the front tube body. The Y1 support block is used to support the plate body of the connecting plate located on the outside of the front tube body. The Y-clamping part includes a Y-clamping block and a Y-clamping adjustment mechanism for adjusting the state of the Y-clamping block. The Y-clamping block is provided with Y-assembly pins for cooperating with the Y-assembly holes. The Y-clamping adjustment mechanism is composed of a flip adjustment mechanism.

8. The welding fixture for automobile seat production according to claim 1, characterized in that: The Z assembly mechanism includes a left assembly section, a right assembly section, a front assembly section, a rear assembly section, and a middle assembly section for clamping the left tube body, the right tube body, the front tube body, the rear tube body, and the middle tube body respectively. The front assembly section includes a first assembly unit and a second assembly unit arranged sequentially along the X direction. The first assembly unit clamps the end of the front tube body near the left tube body, and the second assembly unit clamps the middle part of the front tube body.

9. The welding fixture for automobile seat production according to claim 8, characterized in that: The rear assembly section includes a rear assembly unit, a rear assembly unit, and a rear assembly unit arranged sequentially along the X direction. The rear assembly unit includes a rear support base and a rear clamping assembly. The rear support base supports one end of the rear tube body and has a rear positioning block that abuts against the inner side of the rear tube body. The rear clamping assembly includes a rear adjusting member and a rear clamping block and a rear abutting block arranged on the rear adjusting member.

10. The welding fixture for automobile seat production according to claim 8, characterized in that: The left assembly section includes a left first assembly unit, a left second assembly unit, and a left third assembly unit arranged sequentially along the Y direction; the right assembly section includes a right first assembly unit and a right second assembly unit arranged sequentially along the Y direction; and the middle assembly section includes a middle first assembly unit and a middle second assembly unit arranged sequentially along the Y direction.

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