Seat back frame body welding device

Abstract

The utility model relates to a seat backrest framework body welding set, including base, be provided with the A clamping unit that carries out the clamping of U type spare, the B clamping unit that carries out the clamping of vertical pole, the C clamping unit that carries out the clamping of horizontal pole, the D clamping unit that carries out the clamping of steel wire accessory, A clamping unit, B clamping unit, C clamping unit, D clamping unit are used for making the welding point between U type spare, vertical pole, horizontal pole and steel wire accessory be in bare condition. The above scheme provided by the utility model can reliably clamp each part of the framework body, and realizes the effect that each part reliably and quickly welds.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body parts production, specifically to a welding device for the body frame of a seat backrest. Background Technology

[0002] like Figure 1 As shown on the left, this is the structure of the car seat back frame, which consists of a U-shaped component, vertical bars, horizontal bars, and steel wire fittings. Two sets of tubular components are installed on the horizontal bars to support the frame. The welding process involves welding these components together. Figure 1 The skeleton body of the structure shown on the right. Currently, welding is performed in sections, resulting in low welding efficiency and high cost. Therefore, it is necessary to provide a welding fixture that can reliably hold the U-shaped parts, vertical bars, horizontal bars, and wire fittings within a single welding fixture, thereby improving welding efficiency and reducing processing costs. Utility Model Content

[0003] The purpose of this invention is to provide a welding device for the frame body of a seat back, which can improve the welding efficiency of the frame body and reduce the processing cost.

[0004] The specific technical solution adopted in this utility model is as follows.

[0005] A welding device for the seat back frame body is characterized in that it includes a base, on which are provided an A clamping unit for clamping a U-shaped part, a B clamping unit for clamping a vertical rod, a C clamping unit for clamping a horizontal rod, and a D clamping unit for clamping a wire fitting. The A clamping unit, B clamping unit, C clamping unit, and D clamping unit are used to expose the welding points between the U-shaped part, the vertical rod, the horizontal rod, and the wire fitting.

[0006] A further embodiment is as follows: The U-shaped component includes a rod segment A1 located in the middle, with end A11 of rod segment A1 connected to rod segment A2, and end A12 of rod segment A2 connected to rod segment A3. Ends A11 and A12 are the two ends of rod segment A1. Rod segment A2 includes a straight rod segment A2 and an arc segment A2 for connecting to end A11. Rod segment A3 includes a straight rod segment A3 and an arc segment A3 for connecting to end A13. Clamping unit A includes clamping parts A1, A2, and A3 for clamping rod segments A1, A2, and A3 respectively. Rod segments A1, A2, and A3 are all made of square tubing.

[0007] The A1 clamping section includes three sub-sections: A11, A12, and A13. Sub-sections A11 and A13 clamp the A11 and A12 ends of the A1 shaft, respectively. Sub-section A12 clamps the middle section of the A1 shaft. Sub-section A11 includes an X1 type support assembly and an X1 type clamping assembly; sub-section A12 includes an X2 type support assembly and an X2 type clamping assembly; and sub-section A13 includes an X1 type support assembly and an X3 type clamping assembly. The X1 type support assembly includes an X11 support assembly for supporting the square tube and an X11 abutment block that abuts and limits the movement against the inner wall of the square tube; the X2 type support assembly includes an X12 support assembly for supporting the square tube and an X12 abutment block that abuts and limits the movement against the outer wall of the square tube; the X1 type clamping assembly includes an X11 assembly rod, the middle part of which is hinged to an X11 support base, and an X11 pressure block for clamping the square tube is provided at one end of the X11 assembly rod, with the X11 pressure block spaced apart on the right side. An X11 limiting block is provided for abutting and limiting the square tube against its outer wall. The other end of the X11 assembly rod is hinged to the piston rod of the X11 adjusting cylinder, and the cylinder body of the X11 adjusting cylinder is hinged to the X11 assembly base. The X2 type clamping assembly includes an X21 assembly rod, the middle of which is hinged to the X21 support base. One end of the X21 assembly rod is provided with an X21 pressure block for clamping the square tube, and the other end of the X21 assembly rod is hinged to the piston rod of the X21 adjusting cylinder. The cylinder body of the 1-adjusting cylinder is hinged to the X21 mounting base; the X3 type clamping assembly includes an X31 mounting rod, the middle part of which is hinged to the X31 support base, one end of the X31 mounting rod is provided with an X31 pressure block for pressing the square tube, and an X31 limiting block is provided at intervals on the left side of the X31 pressure block for abutting and limiting the outer wall of the square tube, the other end of the X31 mounting rod is hinged to the piston rod of the X31 adjusting cylinder, and the cylinder body of the X31 adjusting cylinder is hinged to the X31 mounting base.

[0008] The A2 clamping part includes A21 clamping sub-part, A22 clamping sub-part, and A23 clamping sub-part. The A21 and A22 clamping sub-parts clamp the A21 and A22 ends of the A2 straight rod segment, respectively. The A21 and A22 ends are the two ends of the A2 straight rod segment, and the A22 end is connected to the A2 arc segment. The A23 clamping sub-part clamps the middle part of the A2 arc segment. The A21 clamping sub-part includes an X2 type support component and an X2 type clamping component. The A22 clamping sub-part includes an X2 type support component and an X1 type clamping component. The A23 clamping sub-part includes an X3 type support component. The X3 type support component includes an X13 support component that supports the square tube and X131 abutment block and X132 abutment block that abut against and limit the inner and outer walls of the square tube, respectively.

[0009] The A3 clamping part includes an A31 clamping sub-part and an A32 clamping sub-part. The A31 clamping sub-part and the A32 clamping sub-part clamp the A31 end and the A32 end of the A3 straight rod segment, respectively. The A31 end and the A32 end are the two ends of the A3 straight rod segment, and the A32 end is connected to the A3 arc segment. The A31 clamping sub-part includes an X1 type support component and an X3 type clamping component, and the A32 clamping sub-part includes an X1 type support component and an X2 type clamping component.

[0010] The B clamping unit includes a B1 clamping sub-part and a B2 clamping sub-part, which clamp the B1 end and B2 end of the vertical rod, respectively. The B1 end is used to connect with the horizontal bar, and the B2 end is used to connect with the A1 rod body. The B1 clamping sub-part and the B2 clamping sub-part each include an X3 type support component. Two sets of Y1 type clamping components are arranged between the B1 clamping sub-part and the B2 clamping sub-part. The Y1 type clamping component includes a Y1 pressure rod. One end of the Y1 pressure rod is provided with a Y1 pressure block for pressing the square tube. The other end of the Y1 pressure rod is connected to the vertical output rod of the telescopic rotary cylinder assembly. The telescopic rotary cylinder assembly is arranged between the vertical rod and the A3 rod body.

[0011] The C clamping unit includes a C1 clamping sub-part, a C2 clamping sub-part, and a C3 clamping sub-part. The C1 and C3 clamping sub-parts clamp the C1 and C2 ends of the crossbar, respectively. The C1 and C2 ends are the two ends of the crossbar. The C1 end is used to connect with the A2 rod body, and the C2 end is used to connect with the A3 rod body. The C2 clamping sub-part clamps the middle part of the crossbar. The C1 clamping sub-part includes an X1 type support component and an X3 type clamping component. The C2 clamping sub-part includes an X1 type support component and an X3 type clamping component. The C3 clamping sub-part includes an X1 type support component and an X3 type clamping component.

[0012] The crossbar is equipped with assembly components C1 and C2. Assembly component C1 consists of two spaced-apart assembly tubes, C11 and C12, with C11 positioned closer to the A2 section of the bar than C12. Assembly component C2 consists of two spaced-apart assembly tubes, C21 and C22, positioned on either side of the C3 clamping part, with C21 positioned closer to the A3 section than C22. C insertion positioning components are located beside both C11 and C21 assembly tubes, each including a C insertion positioning pin. The C insertion positioning pin is connected to the piston rod of the C adjusting cylinder, which is fixedly mounted on the C support base. The C insertion positioning pin is arranged along the length of either assembly tube C11 or C21. The wire fitting is composed of C-shaped bent wire components. Each wire component includes a D1 wire segment arranged parallel to the vertical bar and D2 and D4 wire segments arranged parallel to the horizontal bar. One end of the D1 wire segment is connected to the D2 wire segment, and the other end of the D1 wire segment is connected to the D4 wire segment via a D3 wire segment. The D3 wire segment and the vertical bar are arranged at an angle. The D clamping unit includes D1 clamping parts, D2 clamping parts, and D4 clamping parts that respectively clamp the D1, D2, and D4 wire segments. The D1 clamping part includes two D11 clamping elements that clamp both ends of the D1 wire segment. The D11 clamping sub-unit includes a Y1 type support assembly and a Y2 type clamping assembly. The Y1 type support assembly includes a Y1 support component that supports the wire component and has a wire groove for accommodating the wire component. The Y2 type clamping assembly includes a Y2 mounting rod, the middle of which is hinged to the cylinder body of the Y2 adjusting cylinder. One end of the Y2 mounting rod is used to clamp the wire component, and the other end is hinged to the piston rod of the Y2 adjusting cylinder. The D2 clamping sub-unit includes one set of Y2 type support assemblies and two sets of Y3 type clamping assemblies. The Y2 type support assembly includes a Y1 type support component that supports the wire component and has a wire groove for accommodating the wire component. The Y2 support assembly supports the steel wire component. The Y2 support assembly has two spaced-apart Y2 support blocks, each with a wire groove for accommodating the steel wire component. The Y3 clamping assembly includes a Y3 assembly rod composed of a folded rod. The middle part of the Y3 assembly rod is hinged to the cylinder body of the Y3 adjusting cylinder. One end of the Y3 assembly rod is used to clamp the steel wire component, and the other end is hinged to the piston rod of the Y3 adjusting cylinder. The Y3 adjusting cylinder is located between the D2 and D4 steel wire segments. The D4 clamping part includes the Y4 support assembly and the Y4 clamping assembly. The support assembly includes a Y4 support assembly for supporting the wire component. The Y4 support assembly has two spaced-apart Y4 support blocks, each with a wire groove for accommodating the wire component. The Y4 clamping assembly includes a Y4 assembly rod, the middle of which is hinged to the cylinder body of a Y4 adjusting cylinder. One end of the Y4 assembly rod is provided with a Y4 pressure block for pressing the wire component, and the other end is hinged to the piston rod of the Y4 adjusting cylinder. The Y4 adjusting cylinder is located between the D2 and D4 wire segments, and the Y4 pressure block is located between the two Y4 support blocks.

[0013] The base includes an upper base plate and a lower base plate arranged at intervals. Clamping units A, B, C, and D are installed on the upper base plate. Assembly bases X11, X21, and X31 are fixedly assembled on the lower base plate. An A1 gap is provided on the upper base plate between the A2 rod section and the vertical rod, and an A2 gap is provided on the upper base plate between the A3 rod section and the vertical rod.

[0014] The above-mentioned solution provided by this utility model can reliably clamp the components that make up the skeleton body, and achieve the effect of reliable and rapid welding between the components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the skeleton body.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model.

[0017] Figure 3 for Figure 2 A schematic diagram of the structure after removing the skeleton body.

[0018] Figure 4 This is a schematic diagram of the structure of clamping unit A.

[0019] Figure 5 This is a schematic diagram of the structure of clamping unit B.

[0020] Figure 6 This is a schematic diagram of the C-clamping unit.

[0021] Figure 7 This is a schematic diagram of the structure of the D-clamping unit.

[0022] Figure 8 This is a schematic diagram of the structure of three clamping components.

[0023] Figure 9 Here are structural diagrams of several support components.

[0024] Figure 10 This is a schematic diagram of the structure of the five clamping components.

[0025] Drawing number explanation: 01-U-shaped part, 02-vertical rod, 03-horizontal rod, 04-steel wire fitting, 05-C11 assembly tube, 06-C21 assembly tube, 11-upper base plate, 12-lower base plate, 21-X1 type support assembly, 22-X2 type support assembly, 23-X3 type support assembly, 24-Y1 type support assembly, 25-Y2 type support assembly, 26-Y3 type support assembly, 31-X1 type clamping assembly, 32-X2 type clamping assembly, 33-X3 type clamping assembly, 34-Y1 type clamping assembly, 35-Y2 type clamping assembly, 36-Y3 type clamping assembly, 37-Y4 type clamping assembly. Detailed Implementation

[0026] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[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 Figure 3, the seat back frame body welding device includes a base, on which are provided an A clamping unit for clamping the U-shaped part, a B clamping unit for clamping the vertical bar, a C clamping unit for clamping the horizontal bar, and a D clamping unit for clamping the wire fittings. The A clamping unit, B clamping unit, C clamping unit, and D clamping unit are used to expose the welding points between the U-shaped part, the vertical bar, the horizontal bar, and the wire fittings. The U-shaped component includes a rod segment A1 located in the middle. End A11 of rod segment A1 is connected to rod segment A2, and end A12 of rod segment A2 is connected to rod segment A3. Ends A11 and A12 are the two ends of rod segment A1. Rod segment A2 includes a straight rod segment A2 and an arc-shaped segment A2 for connecting to end A11. Rod segment A3 includes a straight rod segment A3 and an arc-shaped segment A3 for connecting to end A13. Clamping unit A includes clamping parts A1, A2, and A3 for clamping rod segments A1, A2, and A3 respectively. Rod segments A1, A2, and A3 are all made of square tubing.

[0029] Further, such as Figure 4 , 8As shown in Figure 10: The A1 clamping part includes an A11 clamping sub-part, an A12 clamping sub-part, and an A13 clamping sub-part. The A11 and A13 clamping sub-parts clamp the A11 and A12 ends of the A1 shaft section, respectively. The A12 clamping sub-part clamps the middle portion of the A1 shaft section. The A11 clamping sub-part includes an X1 type support component and an X1 type clamping component. The A12 clamping sub-part includes an X2 type support component and an X2 type clamping component. The A13 clamping sub-part includes an X1 type support component and an X3 type clamping component. The X1 type support assembly includes an X11 support assembly for supporting the square tube and an X11 abutment block that abuts against and limits the inner wall of the square tube; the X2 type support assembly includes an X12 support assembly for supporting the square tube and an X12 abutment block that abuts against and limits the outer wall of the square tube; the X1 type clamping assembly includes an X11 assembly rod, the middle part of which is hinged to an X11 support base, and an X11 pressure block for clamping the square tube is provided at one end of the X11 assembly rod. The X11 abutment block is provided on the side for abutting and limiting the square tube against the outer wall. The other end of the X11 assembly rod is hinged to the piston rod of the X11 adjusting cylinder. The cylinder body of the X11 adjusting cylinder is hinged to the X11 assembly base. The X2 type clamping assembly includes an X21 assembly rod, the middle part of which is hinged to the X21 support base. One end of the X21 assembly rod is provided with an X21 pressure block for pressing the square tube. The other end of the X21 assembly rod is hinged to the piston rod of the X21 adjusting cylinder. The cylinder body of the X21 adjusting cylinder is hinged to the X21 mounting base; the X3 type clamping assembly includes an X31 mounting rod, the middle of which is hinged to the X31 support base. One end of the X31 mounting rod is equipped with an X31 pressure block for clamping the square tube. To the left of the X31 pressure block are spaced X31 limiting blocks for abutting and limiting the movement of the square tube against its outer wall. The other end of the X31 mounting rod is hinged to the piston rod of the X31 adjusting cylinder, and the cylinder body of the X31 adjusting cylinder is hinged to the X31 mounting base. The length directions of the X11, X21, and X31 mounting rods are all perpendicular to the length direction of the tube at the clamping point. The X11 abutment block in the A11 clamping sub-section is located between the X11 pressure block and the X11 limiting block. The X12 abutment block and the X21 pressure block are arranged correspondingly in the A12 clamping sub-section. The X13 abutment block in the A13 clamping sub-section is located between the X31 pressure block and the X31 limiting block. The X1-type clamping assemblies, X2-type clamping assemblies, and X3-type clamping assemblies that make up the A11, A12, and A13 clamping sub-sections are respectively installed on the outer side of the A1 rod section. The A1 clamping section with the above structure can reliably clamp the A1 rod section and is easy and reliable to operate. Here, "inner" and "outer" tube walls are relative to the skeleton body; the inner wall is located inside the skeleton body, and the outer wall is located outside the skeleton body. Identical components have the same structure, but their assembly orientation will differ depending on the location.The X11 support assembly, X21 support assembly, and X31 support assembly can each be composed of a support frame and support blocks arranged horizontally on the support frame. The A2 clamping part includes A21 clamping sub-part, A22 clamping sub-part, and A23 clamping sub-part. The A21 and A22 clamping sub-parts clamp the A21 and A22 ends of the A2 straight rod segment, respectively. The A21 and A22 ends are the two ends of the A2 straight rod segment, and the A22 end is connected to the A2 arc segment. The A23 clamping sub-part clamps the middle part of the A2 arc segment. The A21 clamping sub-part includes an X2 type support component and an X2 type clamping component. The A22 clamping sub-part includes an X2 type support component and an X1 type clamping component. The A23 clamping sub-part includes an X3 type support component. The X3 type support component includes an X13 support component that supports the square tube and X131 abutment block and X132 abutment block that abut against and limit the inner and outer walls of the square tube, respectively.

[0030] Within the A21 clamping sub-section, the X12 abutment block and X21 pressure block are arranged correspondingly. Within the A12 clamping sub-section, the X12 abutment block is located between the X11 pressure block and the X11 limiting block. The X1-type clamping assemblies and X2-type clamping assemblies that make up the A21 and A22 clamping sub-sections are all installed on the inner side of the A2 rod section. The A2 clamping section with the above structure can reliably clamp the A2 rod section and is convenient and reliable to operate. The A3 clamping section includes clamping sub-sections A31 and A32, which clamp ends A31 and A32 of the straight rod segment, respectively. Ends A31 and A32 are the two ends of the straight rod segment, with end A32 connected to the curved segment of A3. Clamping sub-section A31 includes an X1 type support component and an X3 type clamping component, while clamping sub-section A32 includes an X1 type support component and an X2 type clamping component. In practice, the X11 abutment block in clamping sub-section A31 is located between the X31 pressure block and the X31 limiting block, while the X11 abutment block and X21 pressure block are correspondingly arranged in clamping sub-section A32. The X3 type and X2 type clamping components that make up clamping sub-sections A31 and A32 are all installed on the outer side of the rod segment. The A3 clamping part of the above structure can reliably clamp the A3 rod section, and is easy and reliable to operate.

[0031] like Figure 5 , 9As shown, the B clamping unit includes a B1 clamping sub-section and a B2 clamping sub-section for clamping ends B1 and B2 of the vertical rod, respectively. End B1 is used to connect to the horizontal rod, and end B2 is used to connect to the A1 rod body. Each of the B1 and B2 clamping sub-sections includes an X3 type support component. Two sets of Y1 type clamping components are arranged between the B1 and B2 clamping sub-sections. Each Y1 type clamping component includes a Y1 pressure rod. One end of the Y1 pressure rod is equipped with a Y1 pressure block for clamping the square tube, and the other end of the Y1 pressure rod is connected to the vertical output rod of the telescopic rotary cylinder assembly. The telescopic rotary cylinder assembly is located between the vertical rod and the A3 rod body. The Y1 type clamping components that make up the B1 and B2 clamping sub-sections are all installed between the vertical rod and the A3 rod body. The telescopic rotary cylinder assembly consists of a lifting cylinder and a rotating cylinder. It can adjust both the vertical output rod for raising and lowering, and also for rotating. By adjusting the Y1 pressure rod for both raising and lowering and rotation, it achieves the clamping of the vertical rod and avoids obstruction during assembly and unloading. The A3 clamping part of the above structure can reliably clamp the A3 rod section, and its operation is convenient and reliable.

[0032] like Figure 6 , 8 As shown, the C clamping unit includes a C1 clamping sub-part, a C2 clamping sub-part, and a C3 clamping sub-part. The C1 and C3 clamping sub-parts clamp the C1 and C2 ends of the crossbar, respectively. The C1 and C2 ends are the two ends of the crossbar. The C1 end is used to connect with the A2 rod body, and the C2 end is used to connect with the A3 rod body. The C2 clamping sub-part clamps the middle part of the crossbar. The C1 clamping sub-part includes an X1 type support component and an X3 type clamping component. The C2 clamping sub-part includes an X1 type support component and an X3 type clamping component. The C3 clamping sub-part includes an X1 type support component and an X3 type clamping component. The crossbar is equipped with assembly components C1 and C2. Assembly component C1 consists of two spaced-apart assembly tubes, C11 and C12, with C11 positioned closer to the A2 section of the bar than C12. Assembly component C2 consists of two spaced-apart assembly tubes, C21 and C22, positioned on either side of the C3 clamping part, with C21 positioned closer to the A3 section than C22. C insertion positioning components are located beside both C11 and C21 assembly tubes, each including a C insertion positioning pin. The C insertion positioning pin is connected to the piston rod of the C adjusting cylinder, which is fixedly mounted on the C support. The C insertion positioning pin is arranged along the length of either assembly tube C11 or C21.

[0033] In specific implementation, the X11 abutment block inside the C1 clamping sub-unit is located between the X31 pressure block and the X31 limiting block; the X11 abutment block inside the C2 clamping sub-unit is located between the X31 pressure block and the X31 limiting block; and the X11 abutment block inside the C3 clamping sub-unit is located between the X31 pressure block and the X31 limiting block. The B1 end of the vertical rod is welded to the body of the horizontal bar between the C2 and C3 clamping sub-units. The B2 end of the vertical rod is used to weld to the A1 rod section between the A12 and A13 clamping sub-units. The X3-type clamping assemblies that make up the C1, C2, and C3 clamping sub-units are all installed on the outside of the horizontal bar. The C-clamping unit with the above structure can reliably clamp the horizontal bar and is easy and reliable to operate.

[0034] like Figure 7 , 9As shown in Figure 10, the wire fitting is composed of a C-shaped folded wire component. The wire component includes a D1 wire segment arranged parallel to the vertical bar and D2 and D4 wire segments arranged parallel to the horizontal bar. One end of the D1 wire segment is connected to the D2 wire segment, and the other end of the D1 wire segment is connected to the D4 wire segment via a D3 wire segment. The D3 wire segment and the vertical bar are arranged at an angle. The clamping unit includes a D1 clamping part, a D2 clamping part, and a D4 clamping part that respectively clamp the D1, D2, and D4 wire segments. The D1 clamping part includes two D1 clamping parts that clamp both ends of the D1 wire segment. 11. Clamping Sub-section D11 includes a Y1 type support assembly and a Y2 type clamping assembly. The Y1 type support assembly includes a Y1 support component that supports the wire component and has a wire groove for accommodating the wire component. The Y2 type clamping assembly includes a Y2 assembly rod, the middle of which is hinged to the cylinder body of the Y2 adjusting cylinder. One end of the Y2 assembly rod is used to clamp the wire component, and the other end is hinged to the piston rod of the Y2 adjusting cylinder. The D2 clamping section includes one set of Y2 type support assemblies and two sets of Y3 type clamping assemblies. The Y2 type support assembly includes... The Y2 support assembly supports the wire component. The Y2 support assembly has two spaced-apart Y2 support blocks, each with a wire groove for accommodating the wire component. The Y3 clamping assembly includes a Y3 assembly rod composed of a folded rod. The middle part of the Y3 assembly rod is hinged to the cylinder body of the Y3 adjusting cylinder. One end of the Y3 assembly rod is used to clamp the wire component, and the other end is hinged to the piston rod of the Y3 adjusting cylinder. The Y3 adjusting cylinder is positioned between the D2 and D4 wire segments. The D4 clamping part includes the Y4 support assembly and the Y4 clamping assembly. The Y4 type support assembly includes a Y4 support component that supports the wire component. The Y4 support component has two spaced-apart Y4 support blocks, each with a wire groove for accommodating the wire component. The Y4 type clamping assembly includes a Y4 assembly rod, the middle of which is hinged to the cylinder body of a Y4 adjusting cylinder. One end of the Y4 assembly rod has a Y4 pressure block for pressing the wire component, and the other end is hinged to the piston rod of the Y4 adjusting cylinder. The Y4 adjusting cylinder is positioned between the D2 and D4 wire segments, and the Y4 pressure block is located between the two Y4 support blocks. The bending directions of the folded rods on the two sets of Y3 type clamping assemblies are symmetrical. The length direction of the Y2 assembly rod is perpendicular to the vertical rod, and the Y2 assembly rod corresponds to the Y1 type support assembly. The Y1 type support assembly has Y1 support blocks with wire grooves. The Y2 adjusting cylinder is positioned between the vertical rod and the A2 rod segment. The D-clamping unit with the above structure can reliably clamp the wire fittings and is easy and reliable to operate.

[0035] Furthermore, the base includes an upper base plate and a lower base plate arranged at intervals. Clamping units A, B, C, and D are mounted on the upper base plate. Assembly seats X11, X21, and X31 are fixedly mounted on the lower base plate. An A1 gap is provided on the upper base plate between the A2 rod section and the vertical rod, and an A2 gap is provided on the upper base plate between the A3 rod section and the vertical rod. The A1 and A2 gaps facilitate the installation of the air passage pipes and the X11, X21, and X31 assembly seats, reducing the space requirements of the fixture and facilitating the assembly of various components, lowering production costs, and facilitating the unloading of the welded frame body.

[0036] In summary, the above-mentioned solution provided by this utility model can reliably clamp the components that make up the skeleton body, and achieve the effect of reliable and rapid welding between the components.

[0037] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented according to conventional methods in the field.

Claims

1. A welding device for the seat back frame body, characterized in that: The system includes a base, on which are mounted clamping units A (for clamping the U-shaped component), B (for clamping the vertical bar), C (for clamping the horizontal bar), and D (for clamping the wire fitting). Clamping units A, B, C, and D expose the weld points between the U-shaped component, vertical bar, horizontal bar, and wire fitting. The U-shaped component includes a central A1 section, with end A11 connected to end A2, and end A12 of the A2 section... The A11 and A12 ends are the two ends of the A1 rod segment. The A2 rod segment includes a straight A2 rod segment and an A2 arc segment for connecting with the A11 end. The A3 rod segment includes a straight A3 rod segment and an A3 arc segment for connecting with the A13 end. The A clamping unit includes an A1 clamping part, an A2 clamping part, and an A3 clamping part for clamping the A1, A2, and A3 rod segments respectively. The A1, A2, and A3 rod segments are all made of square tubing. The A1 clamping section includes three sub-sections: A11, A12, and A13. Sub-sections A11 and A13 clamp the A11 and A12 ends of the A1 shaft, respectively. Sub-section A12 clamps the middle section of the A1 shaft. Sub-section A11 includes an X1 type support assembly and an X1 type clamping assembly; sub-section A12 includes an X2 type support assembly and an X2 type clamping assembly; and sub-section A13 includes an X1 type support assembly and an X3 type clamping assembly. The X1 type support assembly includes an X11 support assembly for supporting the square tube and an X11 abutment block that abuts and limits the movement against the inner wall of the square tube; the X2 type support assembly includes an X12 support assembly for supporting the square tube and an X12 abutment block that abuts and limits the movement against the outer wall of the square tube; the X1 type clamping assembly includes an X11 assembly rod, the middle part of which is hinged to an X11 support base, and an X11 pressure block for clamping the square tube is provided at one end of the X11 assembly rod, with the X11 pressure block spaced apart on the right side. An X11 limiting block is provided for abutting and limiting the square tube against its outer wall. The other end of the X11 assembly rod is hinged to the piston rod of the X11 adjusting cylinder, and the cylinder body of the X11 adjusting cylinder is hinged to the X11 assembly base. The X2 type clamping assembly includes an X21 assembly rod, the middle of which is hinged to the X21 support base. One end of the X21 assembly rod is provided with an X21 pressure block for clamping the square tube, and the other end of the X21 assembly rod is hinged to the piston rod of the X21 adjusting cylinder. The cylinder body of the 1-adjusting cylinder is hinged to the X21 mounting base; the X3 type clamping assembly includes an X31 mounting rod, the middle part of which is hinged to the X31 support base, one end of the X31 mounting rod is provided with an X31 pressure block for pressing the square tube, and an X31 limiting block is provided at intervals on the left side of the X31 pressure block for abutting and limiting the outer wall of the square tube, the other end of the X31 mounting rod is hinged to the piston rod of the X31 adjusting cylinder, and the cylinder body of the X31 adjusting cylinder is hinged to the X31 mounting base.

2. The seat back frame welding device according to claim 1, characterized in that: The A2 clamping part includes A21 clamping sub-part, A22 clamping sub-part, and A23 clamping sub-part. The A21 and A22 clamping sub-parts clamp the A21 and A22 ends of the A2 straight rod segment, respectively. The A21 and A22 ends are the two ends of the A2 straight rod segment, and the A22 end is connected to the A2 arc segment. The A23 clamping sub-part clamps the middle part of the A2 arc segment. The A21 clamping sub-part includes an X2 type support component and an X2 type clamping component. The A22 clamping sub-part includes an X2 type support component and an X1 type clamping component. The A23 clamping sub-part includes an X3 type support component. The X3 type support component includes an X13 support component that supports the square tube and X131 abutment block and X132 abutment block that abut against and limit the inner and outer walls of the square tube, respectively.

3. The seat back frame welding device according to claim 2, characterized in that: The A3 clamping part includes an A31 clamping sub-part and an A32 clamping sub-part. The A31 clamping sub-part and the A32 clamping sub-part clamp the A31 end and the A32 end of the A3 straight rod segment, respectively. The A31 end and the A32 end are the two ends of the A3 straight rod segment, and the A32 end is connected to the A3 arc segment. The A31 clamping sub-part includes an X1 type support component and an X3 type clamping component, and the A32 clamping sub-part includes an X1 type support component and an X2 type clamping component.

4. The seat back frame welding device according to claim 3, characterized in that: The B clamping unit includes a B1 clamping sub-part and a B2 clamping sub-part, which clamp the B1 end and B2 end of the vertical rod, respectively. The B1 end is used to connect with the horizontal bar, and the B2 end is used to connect with the A1 rod body. The B1 clamping sub-part and the B2 clamping sub-part each include an X3 type support component. Two sets of Y1 type clamping components are arranged between the B1 clamping sub-part and the B2 clamping sub-part. The Y1 type clamping component includes a Y1 pressure rod. One end of the Y1 pressure rod is provided with a Y1 pressure block for pressing the square tube. The other end of the Y1 pressure rod is connected to the vertical output rod of the telescopic rotary cylinder assembly. The telescopic rotary cylinder assembly is arranged between the vertical rod and the A3 rod body.

5. The seat back frame welding device according to claim 4, characterized in that: The C clamping unit includes a C1 clamping sub-part, a C2 clamping sub-part, and a C3 clamping sub-part. The C1 and C3 clamping sub-parts clamp the C1 and C2 ends of the crossbar, respectively. The C1 and C2 ends are the two ends of the crossbar. The C1 end is used to connect with the A2 rod body, and the C2 end is used to connect with the A3 rod body. The C2 clamping sub-part clamps the middle part of the crossbar. The C1 clamping sub-part includes an X1 type support component and an X3 type clamping component. The C2 clamping sub-part includes an X1 type support component and an X3 type clamping component. The C3 clamping sub-part includes an X1 type support component and an X3 type clamping component.

6. The seat back frame welding device according to claim 3, characterized in that: The crossbar is equipped with assembly components C1 and C2. Assembly component C1 consists of two spaced-apart assembly tubes, C11 and C12, with C11 closer to the A2 rod section than C12. Assembly component C2 consists of two spaced-apart assembly tubes, C21 and C22, with C21 and C22 positioned on the outer sides of the C3 clamping part, with C21 closer to the A3 rod section than C22. C insertion positioning components are provided on the sides of assembly tubes C11 and C21, each including a C insertion positioning pin. The C insertion positioning pin is connected to the piston rod of the C adjusting cylinder, which is fixedly mounted on the C support.

7. The seat back frame welding device according to claim 3, characterized in that: The wire fitting is composed of C-shaped bent wire components. Each wire component includes a D1 wire segment arranged parallel to the vertical bar and D2 and D4 wire segments arranged parallel to the horizontal bar. One end of the D1 wire segment is connected to the D2 wire segment, and the other end of the D1 wire segment is connected to the D4 wire segment via a D3 wire segment. The D3 wire segment and the vertical bar are arranged at an angle. The D clamping unit includes D1 clamping parts, D2 clamping parts, and D4 clamping parts that respectively clamp the D1, D2, and D4 wire segments. The D1 clamping part includes two D11 clamping elements that clamp both ends of the D1 wire segment. The D11 clamping sub-unit includes a Y1 type support assembly and a Y2 type clamping assembly. The Y1 type support assembly includes a Y1 support component that supports the wire component and has a wire groove for accommodating the wire component. The Y2 type clamping assembly includes a Y2 mounting rod, the middle of which is hinged to the cylinder body of the Y2 adjusting cylinder. One end of the Y2 mounting rod is used to clamp the wire component, and the other end is hinged to the piston rod of the Y2 adjusting cylinder. The D2 clamping sub-unit includes one set of Y2 type support assemblies and two sets of Y3 type clamping assemblies. The Y2 type support assembly includes a Y1 type support component that supports the wire component and has a wire groove for accommodating the wire component. The Y2 support assembly supports the steel wire component. The Y2 support assembly has two spaced-apart Y2 support blocks, each with a wire groove for accommodating the steel wire component. The Y3 clamping assembly includes a Y3 assembly rod composed of a folded rod. The middle part of the Y3 assembly rod is hinged to the cylinder body of the Y3 adjusting cylinder. One end of the Y3 assembly rod is used to clamp the steel wire component, and the other end is hinged to the piston rod of the Y3 adjusting cylinder. The Y3 adjusting cylinder is located between the D2 and D4 steel wire segments. The D4 clamping part includes the Y4 support assembly and the Y4 clamping assembly. The support assembly includes a Y4 support assembly for supporting the wire component. The Y4 support assembly has two spaced-apart Y4 support blocks, each with a wire groove for accommodating the wire component. The Y4 clamping assembly includes a Y4 assembly rod, the middle of which is hinged to the cylinder body of a Y4 adjusting cylinder. One end of the Y4 assembly rod is provided with a Y4 pressure block for pressing the wire component, and the other end is hinged to the piston rod of the Y4 adjusting cylinder. The Y4 adjusting cylinder is located between the D2 and D4 wire segments, and the Y4 pressure block is located between the two Y4 support blocks.

8. The seat back frame welding device according to claim 3, characterized in that: The base includes an upper base plate and a lower base plate arranged at intervals. Clamping units A, B, C, and D are installed on the upper base plate. Assembly bases X11, X21, and X31 are fixedly assembled on the lower base plate. An A1 gap is provided on the upper base plate between the A2 rod section and the vertical rod, and an A2 gap is provided on the upper base plate between the A3 rod section and the vertical rod.

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