CN110948084A

CN110948084A - I-shaped frame welding mechanism and welding equipment for seat iron frame

Info

Publication number: CN110948084A
Application number: CN201911383452.1A
Authority: CN
Inventors: 王江林; 李义仁
Original assignee: Huzhou Hengxin Metal Products Co ltd
Current assignee: Huzhou Hengxin Metal Products Co ltd
Priority date: 2019-12-27
Filing date: 2019-12-27
Publication date: 2020-04-03
Anticipated expiration: 2039-12-27
Also published as: CN110948084B

Abstract

The invention relates to the technical field of welding of metal frames of seats, and particularly discloses an I-shaped frame welding mechanism and welding equipment for a seat iron frame, which comprise a first driving device and an arc welding mechanical arm, wherein the driving end of the first driving device is provided with an installation frame, the installation frame is provided with a first station, and a seat I-shaped frame fixing device is arranged in the first station; the seat I-shaped frame fixing device comprises a second mounting plate, four third fixing blocks are arranged on the second mounting plate, third limiting grooves are formed in the third fixing blocks, third supporting rod pieces are placed in the third limiting grooves on the same side, and fourth limiting holes are formed in the positions, close to the two end portions, of the third supporting rod pieces; a second push-pull type quick clamp is arranged on the second mounting plate; the second mounting plate is provided with at least two fourth fixing blocks, the fourth fixing blocks are provided with fourth limiting grooves, and fourth supporting rods are placed in the fourth limiting grooves. The invention has the characteristics of accurate welding position, reliable quality, higher welding efficiency and lower labor intensity.

Description

I-shaped frame welding mechanism and welding equipment for seat iron frame

Technical Field

The invention relates to the technical field of welding of metal frames of seats, in particular to an I-shaped frame welding mechanism and welding equipment for a seat iron frame.

Background

The seat is one of furniture commonly used in the existing furniture life, and an iron frame is usually required to be used in the manufacturing and processing processes of the seat to support the seat.

In the prior art, the steel bars and the mounting base are welded by manual welding. After retrieval, for example, Chinese patent documents disclose a novel rocking chair (patent number: ZL 201310183344.6; grant publication No. CN104161406A ]. The novel rocking chair comprises a chair seat, springs, a support, a rotating shaft, a connecting block, supporting rods and pedals, wherein the supporting rods are welded in the middle of the support, the springs are connected to two sides of each supporting rod through the connecting block, the chair seat is arranged at the upper end of each spring and the upper portion of each supporting rod, and the pedals are arranged at the lower portion of the chair seat. The novel rocking chair has the advantages of reasonable design, simple structure, convenient use and good swinging effect.

Still another seat iron stand is formed by chassis, seat frame, the I-shaped frame that helps, drive pipe support and bracket mount after the bolt concatenation, and this kind of mosaic structure's iron stand not only installation is dismantled conveniently, is convenient for transport, has better steadiness after the equipment moreover, nevertheless helps the welding between each pipe fitting in the I-shaped frame, also adopts manual welded mode to go on, and the problem that exists like this is exactly to weld the position inaccurate, and the quality is unreliable, and is efficient, and intensity of labour is big.

Disclosure of Invention

The invention provides an I-shaped frame welding mechanism and welding equipment for a seat iron frame, aiming at solving the technical problems in the welding of pipe fittings in the existing seat iron frame, and the I-shaped frame welding mechanism and the welding equipment have the characteristics of accurate welding position, reliable quality, higher welding efficiency and lower labor intensity.

The technical scheme of the invention is as follows: the I-shaped frame welding mechanism for the seat iron frame comprises a third support rod piece and a fourth support rod piece; the I-shaped frame welding mechanism comprises a first driving device and an arc welding mechanical arm, wherein a mounting frame is arranged at the driving end of the first driving device, a first station is arranged on the mounting frame, a seat I-shaped frame fixing device is arranged in the first station, and the arc welding free end of the arc welding mechanical arm corresponds to the contact position of each workpiece of the seat I-shaped frame fixing device; the seat I-shaped frame fixing device comprises a second mounting plate, wherein four third fixing blocks are arranged on the second mounting plate, the four third fixing blocks are distributed on the second mounting plate in a rectangular shape, third limiting grooves are formed in the third fixing blocks, third limiting holes are formed in the third fixing blocks, third supporting rod pieces are placed in the third limiting grooves on the same side, two end portions of each third supporting rod piece are placed in the corresponding third limiting grooves, fourth limiting holes are formed in the positions, close to the two end portions, of each third supporting rod piece, and each fourth limiting hole corresponds to the third limiting hole in the corresponding position; the second mounting plate is provided with at least two second push-pull type quick clamps which respectively correspond to the third fixing blocks on the two sides, and second push-pull rods of the second push-pull type quick clamps are matched with the corresponding third limiting holes and fourth limiting holes; the second mounting plate is provided with at least two fourth fixed blocks, the fourth fixed blocks are located between two third support rod pieces, the direction in which the two fourth fixed blocks are arranged is perpendicular to the direction in which the two third fixed blocks on the same side are arranged, the fourth fixed blocks are provided with fourth limiting grooves, the fourth support rod pieces are placed in the fourth limiting grooves, and two ends of each fourth support rod piece are respectively contacted with the third support rod pieces on corresponding positions. According to the invention, the first station is arranged on the mounting frame, and the seat I-shaped frame fixing device is arranged on the corresponding station; according to the invention, the arc welding mechanical arm is arranged and is aligned to the point to be welded on the corresponding fixing device according to the program set by the computer, and after the workpiece is fixed on the corresponding fixing device, the whole welding process is automatically completed by the arc welding mechanical arm; the second mounting plate provides mounting positions for all parts in the corresponding device and serves as a mounting platform; the four third fixing blocks which are arranged in a rectangular shape provide mounting positions for two third support rod pieces of the seat I-shaped frame, and a third limiting groove on each third fixing block is matched with the shape of each third support rod piece, so that the third support rod pieces cannot shake in the direction perpendicular to the direction of the notch of each third limiting groove; the two second push-pull type quick clamps correspond to the third fixed blocks on the corresponding sides of the two third support rod pieces, and the second push-pull rods of the second push-pull type quick clamps are matched and locked with the fourth limiting holes at corresponding positions, so that the third support rod pieces cannot move in the direction towards the notches of the third limiting grooves; the third limiting groove and the second push-pull type quick clamp cooperate to ensure stable parallel positioning of the two third support rod pieces on the second mounting plate; the installation position of a fourth support rod piece of the seat I-shaped frame is provided by arranging at least two fourth fixed blocks, the arrangement direction of all the fourth fixed blocks is vertical to the third support rod piece, the shape of a fourth limiting groove on each fourth fixed block is matched with that of the fourth support rod piece, so that the fourth support rod piece cannot shake in the direction vertical to the direction of the notch of the fourth limiting groove, the length of the fourth support rod piece is that after the fourth support rod piece is placed in the fourth limiting groove, two end parts of the fourth support rod piece are just contacted with the third support rod piece at the corresponding end, and after the installation, the end part of the fourth support rod piece is just aligned with the middle position of the third support rod piece, so that the fourth support rod piece cannot move in the direction of the notch of the fourth limiting groove; the third limiting groove and the two third support rods cooperate to ensure that one fourth support rod is stably positioned in each horizontal direction of the second mounting plate; after each workpiece is accurately fixed, the workpiece corresponds to the program control welding point position of the arc welding mechanical arm, and the seat I-shaped frame formed after the fixing device and the arc welding mechanical arm are cooperatively welded has the characteristics of accurate welding point, reliable quality, higher welding efficiency and lower labor intensity.

Preferably, a fourth quick clamp is arranged on the second mounting plate, and a clamping end of the fourth quick clamp corresponds to the fourth support rod. The fourth presss from both sides fast and can prevent that fourth support rod piece from taking place to rock in the vertical direction of second mounting panel.

Preferably, the second mounting plate is provided with at least one fourth jacking air rod, and the fourth jacking air rod corresponds to the third support rod and/or the fourth support rod. After the welding work of the third supporting rod and the fourth supporting rod is completed and all locking is released, the manual air valve switch on the second mounting plate is pulled, the fourth jacking air rod can jack the whole seat I-shaped frame, the seat I-shaped frame is automatically separated from the seat I-shaped frame fixing device, the seat I-shaped frame does not need to be manually pulled up from the corresponding groove position by personnel, the labor is saved, and the personnel only need to take down the seat I-shaped frame jacked up by the fourth jacking air rod.

Preferably, the number of the fourth jacking air rods is four, the four fourth jacking air rods are distributed on the second mounting plate in a rectangular mode, and the fourth jacking air rods correspond to the third support rod piece and/or the fourth support rod piece. The four fourth jacking air rods which are distributed in a rectangular mode can uniformly stress all parts of the whole seat I-shaped frame, and the seat I-shaped frame is guaranteed to be jacked smoothly without being clamped in the corresponding groove position.

Preferably, the fourth fixed block has a V-shape, a V-shaped tip of the fourth fixed block is directed to the third support rod on the corresponding side, and the fourth limiting groove is located at the V-shaped tip of the fourth fixed block. The V-shaped tip of the V-shaped fourth fixed block points to the middle position of the third support rod piece on the corresponding side, so that the end position of the fourth support rod piece can contact the middle position of the third support rod piece after the fourth support rod piece is placed in the fourth limiting groove.

Preferably, an upper surface of the fourth support bar is flush with an upper surface of the third support bar, and an end of the fourth support bar corresponds to an intermediate position of the third support bar. The upper surface of the fourth support rod piece is flush with the upper surface of the third support rod piece, so that the appearance of the seat I-shaped frame formed after welding is more attractive.

Preferably, the number of the second push-pull type quick clamps is four, and the positions of the four second push-pull type quick clamps on the second mounting plate correspond to the four third fixing blocks. The stability of the third support rod piece fixed in the third limiting groove is better.

Welding equipment, including first drive arrangement and arc welding arm, first drive arrangement's drive end is equipped with the mounting bracket, be equipped with first station, second station, third station and fourth station on the mounting bracket, first station, second station, third station and fourth station are the rectangle and distribute on the mounting bracket, be equipped with seat I-shaped frame fixing device, seat frame fixing device, seat drive pipe support fixing device and seat chassis fixing device in first station, second station, third station and the fourth station respectively, the arc welding free end of arc welding arm is corresponding with the contact position of each work piece on seat I-shaped frame fixing device, seat drive pipe support fixing device and the seat chassis fixing device respectively. According to the invention, the first station, the second station, the third station and the fourth station which are distributed in a rectangular shape are arranged on the mounting frame, and the seat I-shaped frame fixing device, the seat frame fixing device, the seat driving pipe frame fixing device and the seat bottom frame fixing device are respectively arranged on the corresponding stations; the invention aims at the positions to be welded on the corresponding fixing devices by arranging the arc welding mechanical arms according to the program set by the computer, and the whole welding process is automatically finished by the arc welding mechanical arms after the workpieces are fixed on the corresponding fixing devices, compared with the manual one-by-one welding in the prior art, the invention has the characteristics of accurate welding position welding, reliable welding quality, higher welding efficiency and lower welding labor intensity, after the workpieces to be welded on two stations at the side of the arc welding mechanical arms are welded, the workpieces to be welded on the other two stations can be brought into the welding range of the arc welding mechanical arms only by driving the mounting frame to rotate 180 degrees by the first driving device, the arc welding mechanical arms weld the corresponding positions according to the set program, and the workpieces are arc-welded to the opposite sides of the arc welding mechanical arms by the first driving device after the welding of the workpieces is finished, and manually taking down the welded iron frame, and then fixing the workpiece to be welded on the fixing position of the corresponding fixing device again, and repeating the steps to accurately and efficiently weld.

Preferably, a second driving device and a third driving device are arranged on the mounting frame side by side, a second driving shaft of the second driving device is fixedly connected with the two fixing devices which are parallel to each other, and a third driving shaft of the third driving device is fixedly connected with the other two fixing devices which are parallel to each other. According to the invention, the second driving device and the third driving device are arranged on the mounting frame side by side, and can respectively control the overturning of the fixing devices on the two stations on the corresponding side, so that a worker can know the working condition of the whole fixing device in real time, when an iron frame formed after welding is abnormal, the worker can find a problem in time by controlling the overturning of the corresponding fixing device, the problem place can be maintained in time, the fixed position preparation of a workpiece on the related fixing device is ensured, and the quality of the welded iron frame is qualified.

Preferably, the first driving device is composed of a first driving motor and a first driving shaft arranged at the driving end of the first driving motor, and the first driving shaft is fixedly connected with the mounting frame; the second driving device consists of a second driving motor and a second driving shaft arranged at the driving end of the second driving motor, and the second driving motor is fixedly arranged on the mounting frame; the third driving device is composed of a third driving motor and a third driving shaft arranged at the driving end of the third driving motor, and the third driving motor is fixedly arranged on the mounting frame. The first driving device, the second driving device and the third driving device are all composed of the driving motor and the driving shaft, and the driving mechanism is simple in structure, low in cost and good in driving stability.

The invention has the following beneficial effects:

arranging a first station on the mounting frame, and arranging the seat I-shaped frame fixing device on the corresponding station; by arranging the arc welding mechanical arm, the arc welding mechanical arm is aligned to the point to be welded on the corresponding fixing device according to the program set by the computer, after a workpiece is fixed on the corresponding fixing device, the whole welding process is automatically completed by the arc welding mechanical arm, and compared with manual one-by-one welding in the prior art, the method has the characteristics of accurate welding position welding, reliable welding quality, higher welding efficiency and lower welding labor intensity.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the seat frame fixing device of the present invention with the corresponding workpieces to be welded fixed;

FIG. 3 is a schematic structural view of the seat I-shaped frame fixing device of the present invention with the corresponding workpieces to be welded fixed;

FIG. 4 is a schematic structural view of the seat-driving-pipe-frame fixing device of the present invention with the respective workpieces to be welded fixed thereto;

FIG. 5 is a schematic structural view of the seat bottom frame fixture of the present invention with the corresponding workpieces to be welded secured thereto;

FIG. 6 is a schematic structural view of the seat frame fixing device of the present invention without fixing the workpieces to be welded;

FIG. 7 is a schematic structural view of the seat I-frame fixture of the present invention without the work pieces to be welded secured thereto;

FIG. 8 is a schematic structural view of the seat drive tube frame fixing device of the present invention when the work pieces to be welded are not fixed thereto;

FIG. 9 is a schematic structural view of the seat bottom frame fixing device of the present invention when the workpieces to be welded are not fixed thereto;

FIG. 10 is a top plan view of the seat frame of FIG. 11;

FIG. 11 is a front view of the seat frame structure of the present invention;

FIG. 12 is a left side elevational view of the configuration of the seat frame of FIG. 11;

FIG. 13 is a schematic view of the construction of the seat I-frame of the present invention;

FIG. 14 is a schematic view of the construction of a seat tube carrier according to the present invention;

FIG. 15 is a schematic view of a sixth plate of the present invention;

FIG. 16 is a schematic view of a sixth plate welded to a sixth plug of the present invention;

FIG. 17 is a top plan view of the seat bottom frame of FIG. 18;

FIG. 18 is a front view of the seat bottom frame of the present invention;

figure 19 is a structural left side view of the seat bottom frame of figure 18.

The labels in the figures are: 100-a first driving device, 101-a first driving shaft, 200-an arc welding mechanical arm, 300-a mounting rack, 301-a first station, 302-a second station, 303-a third station, 304-a fourth station, 305-a second driving device, 3051-a second driving motor, 3052-a second driving shaft, 306-a third driving device, 3061-a third driving motor, 3062-a third driving shaft, 400-a seat I-shaped rack fixing device, 401-a second mounting plate, 402-a third fixing block, 4021-a third limiting groove, 403-a third supporting rod, 404-a second push-pull type quick clamp, 4041-a second push-pull rod, 405-a fourth fixing block, 4051-a fourth limiting groove, 406-a fourth supporting rod, 407-a fourth quick clamp, 408-a fourth jacking air rod, 500-a seat frame fixing device, 501-a first mounting plate, 502-a first rod driving cylinder, 5021-a first driving rod, 5022-a first supporting piece, 5023-a first concave part, 5024-a first telescopic block, 5025-a first supporting block, 5026-a first supporting hole, 503-a first fixing plate, 5031-a first fixing groove, 504-a first connecting piece, 505-a first rod piece, 506-a first push-pull type quick clamp, 5061-a first push-pull rod, 5062-a first locking rod, 507-a fourth connecting piece, 508-a first mounting block, 5081-a first concave mounting part, 5082-a first air clamp, 5083-a first positioning pin, 509-a first triangular bending piece, 510-a second limiting block, 5101-a second limiting groove, 511-a second rod piece, 512-a first cylinder, 5121-a first clamping plate, 5122-a first locating rod, 5123-a first clapboard, 513-a first installation piece, 514-a third supporting block, 5141-a first limiting block, 5142-a third inserted link, 515-a third connecting piece, 516-a third rod piece, 517-a second installation block, 5171-a second installation groove, 518-a second connecting piece, 519-a first quick clamp, 520-a second quick clamp, 521-a first limiting block, 5211-a first limiting groove, 5212-a second jacking air rod, 522-a sixth quick clamp, 523-a third quick clamp, 600-a seat driving and fixing device, 601-a third installation plate, 602-a fifth fixing block, 6021-a fifth fixing groove, 603-a sixth fixing block, 6031-sixth fixed slot, 604-sixth limit block, 605-fifth plate, 606-fifth cylinder, 6061-fifth pneumatic rod, 607-fifth limit block, 6071-fifth limit slot, 608-fifth rod, 609-fifth installation block, 6091-fifth installation slot, 610-fifth pipe, 611-fifth support portion, 612-sixth support block, 6121-sixth fixed hole, 613-sixth plate, 614-sixth plug connector, 615-sixth cylinder, 6151-sixth air clamp, 616-fifth push-pull type quick clamp, 6161-fifth push-pull rod, 617-fifth quick clamp, 6171-fifth clamp block, 700-seat bottom frame fixing device, 701-fourth installation plate, 702-seventh clamping cylinder, 7021-seventh clamping block, 703-a seventh through hole, 704-a seventh mounting block, 705-a seventh connecting piece, 706-an eighth mounting block, 7061-an eighth mounting groove, 707-an eighth rod piece, 708-an eighth angle piece, 709-a tenth rod piece, 710-a seventh cylinder, 7101-a seventh splint, 7102-a seventh positioning rod, 7103-a seventh partition plate, 711-a seventh mounting piece, 712-a seventh inserting rod, 713-a seventh fixing block, 7131-a seventh fixing groove, 714-a seventh supporting part, 715-an eighth fixing block, 7151-an eighth fixing groove, 716-a seventh rod piece, 717-a seventh limiting block, 7171-a seventh limiting groove, 718-a ninth rod piece, 719-an eighth supporting block, 7191-an eighth supporting groove, 7192-an eighth air clamp, 720-an eighth quick clamp, 721-seventh air clamp, 722-seventh air rod, 723-seventh quick clamp and 800-manual air valve switch.

Detailed Description

The invention is further illustrated by the following figures and examples, which are not to be construed as limiting the invention.

The i-shaped frame welding mechanism for the seat iron frame as shown in fig. 3 and 7, wherein the i-shaped frame comprises a third support rod and a fourth support rod; the I-shaped frame welding mechanism comprises a first driving device 100 and an arc welding mechanical arm 200, wherein a mounting frame 300 is arranged at the driving end of the first driving device, a first station 301 is arranged on the mounting frame, a seat I-shaped frame fixing device 400 is arranged in the first station, and the arc welding free end of the arc welding mechanical arm corresponds to the contact position of each workpiece of the seat I-shaped frame fixing device; the seat I-shaped frame fixing device comprises a second mounting plate 401, four third fixing blocks 402 are arranged on the second mounting plate, the four third fixing blocks are distributed on the second mounting plate in a rectangular shape, third limiting grooves 4021 are arranged on the third fixing blocks, third limiting holes are arranged on the third fixing blocks, third supporting rod pieces 403 are placed in the third limiting grooves on the same side, two end portions of each third supporting rod piece are placed in the corresponding third limiting grooves, fourth limiting holes are arranged on the third supporting rod pieces close to the two end portions, and each fourth limiting hole corresponds to the third limiting hole at the corresponding position; at least two second push-pull type quick clamps 404 are arranged on the second mounting plate, the second push-pull type quick clamps correspond to the third fixing blocks on the two sides respectively, and a second push-pull rod 4041 of each second push-pull type quick clamp is matched with the corresponding third limiting hole and the corresponding fourth limiting hole; at least two fourth fixed blocks 405 are arranged on the second mounting plate, the fourth fixed blocks are located between the two third support rods, the arrangement direction of the two fourth fixed blocks is perpendicular to the arrangement direction of the two third fixed blocks on the same side, a fourth limiting groove 4051 is arranged on the fourth fixed blocks, a fourth support rod 406 is placed in the fourth limiting groove, and two ends of the fourth support rod are respectively in contact with the third support rods in corresponding positions.

A fourth quick clamp 407 is arranged on the second mounting plate, and a clamping end of the fourth quick clamp corresponds to the fourth support rod. At least one fourth jacking air rod 408 is arranged on the second mounting plate, and the fourth jacking air rod corresponds to the third support rod and/or the fourth support rod. The number of the fourth jacking air rods is four, the four fourth jacking air rods are distributed on the second mounting plate in a rectangular mode, and the fourth jacking air rods correspond to the third supporting rod pieces and/or the fourth supporting rod pieces. The fourth fixed block is V-shaped, the V-shaped tip of the fourth fixed block points to the third support rod piece on the corresponding side, and the fourth limiting groove is located at the position of the V-shaped tip on the fourth fixed block. The upper surface of the fourth support rod is flush with the upper surface of the third support rod, and the end part of the fourth support rod corresponds to the middle position of the third support rod. The second push-pull type quick clamp has four, and the positions of the four second push-pull type quick clamps on the second mounting plate correspond to four third fixing blocks.

The welding equipment shown in fig. 1 comprises a first driving device 100 and an arc welding mechanical arm 200, wherein a mounting frame 300 is arranged at the driving end of the first driving device, a first station 301, a second station 302, a third station 303 and a fourth station 304 are arranged on the mounting frame, the first station, the second station, the third station and the fourth station are distributed on the mounting frame in a rectangular shape, a seat i-shaped frame fixing device 400, a seat frame fixing device 500, a seat driving tube frame fixing device 600 and a seat underframe fixing device 700 are respectively arranged in the first station, the second station, the third station and the fourth station, and the arc welding mechanical arm has arc welding free ends corresponding to the contact positions of workpieces on the seat i-shaped frame fixing device, the seat driving tube frame fixing device and the seat underframe fixing device. The mounting frame is provided with a second driving device 305 and a third driving device 306 in parallel, a second driving shaft of the second driving device is fixedly connected with two fixing devices in parallel, and a third driving shaft of the third driving device is fixedly connected with the other two fixing devices in parallel. The first driving device is composed of a first driving motor and a first driving shaft 101 arranged at the driving end of the first driving motor, and the first driving shaft is fixedly connected with the mounting frame; the second driving device is composed of a second driving motor 3051 and a second driving shaft 3052 arranged at the driving end of the second driving motor, and the second driving motor is fixedly arranged on the mounting frame; the third driving device is composed of a third driving motor 3061 and a third driving shaft 3062 arranged at the driving end of the third driving motor, and the third driving motor is fixedly arranged on the mounting frame.

The welding equipment shown in fig. 1 comprises a first driving device 100 and an arc welding mechanical arm 200, wherein a mounting frame 300 is arranged at the driving end of the first driving device, a first station 301, a second station 302, a third station 303 and a fourth station 304 are arranged on the mounting frame, the first station, the second station, the third station and the fourth station are distributed on the mounting frame in a rectangular shape, a seat I-shaped frame fixing device 400 shown in fig. 3 and 7, a seat frame fixing device 500 shown in fig. 2 and 6, a seat driving tube frame fixing device 600 shown in fig. 4 and 8 and a seat bottom frame fixing device 700 shown in fig. 5 and 9 are respectively arranged in the first station, the second station, the third station and the fourth station, the arc welding free ends of the arc welding mechanical arms respectively correspond to the contact positions of workpieces on the seat I-shaped frame fixing device, the seat frame fixing device, the seat driving pipe frame fixing device and the seat bottom frame fixing device. According to the invention, the first station, the second station, the third station and the fourth station which are distributed in a rectangular shape are arranged on the mounting frame, and the seat I-shaped frame fixing device, the seat frame fixing device, the seat driving pipe frame fixing device and the seat bottom frame fixing device are respectively arranged on the corresponding stations; the invention aims at the positions to be welded on the corresponding fixing devices by arranging the arc welding mechanical arms according to the program set by the computer, and the whole welding process is automatically finished by the arc welding mechanical arms after the workpieces are fixed on the corresponding fixing devices, compared with the manual one-by-one welding in the prior art, the invention has the characteristics of accurate welding position welding, reliable welding quality, higher welding efficiency and lower welding labor intensity, after the workpieces to be welded on two stations at the side of the arc welding mechanical arms are welded, the workpieces to be welded on the other two stations can be brought into the welding range of the arc welding mechanical arms only by driving the mounting frame to rotate 180 degrees by the first driving device, the arc welding mechanical arms weld the corresponding positions according to the set program, and the workpieces are arc-welded to the opposite sides of the arc welding mechanical arms by the first driving device after the welding of the workpieces is finished, and manually taking down the welded iron frame, and then fixing the workpiece to be welded on the fixing position of the corresponding fixing device again, and repeating the steps to accurately and efficiently weld.

The mounting frame is provided with a second driving device 305 and a third driving device 306 in parallel, a second driving shaft of the second driving device is fixedly connected with two fixing devices in parallel, and a third driving shaft of the third driving device is fixedly connected with the other two fixing devices in parallel. According to the invention, the second driving device and the third driving device are arranged on the mounting frame side by side, and can respectively control the overturning of the fixing devices on the two stations on the corresponding side, so that a worker can know the working condition of the whole fixing device in real time, when an iron frame formed after welding is abnormal, the worker can find a problem in time by controlling the overturning of the corresponding fixing device, the problem place can be maintained in time, the fixed position preparation of a workpiece on the related fixing device is ensured, and the quality of the welded iron frame is qualified.

The first driving device is composed of a first driving motor and a first driving shaft 101 arranged at the driving end of the first driving motor, and the first driving shaft is fixedly connected with the mounting frame; the second driving device is composed of a second driving motor 3051 and a second driving shaft 3052 arranged at the driving end of the second driving motor, and the second driving motor is fixedly arranged on the mounting frame; the third driving device is composed of a third driving motor 3061 and a third driving shaft 3062 arranged at the driving end of the third driving motor, and the third driving motor is fixedly arranged on the mounting frame. The first driving device, the second driving device and the third driving device are all composed of the driving motor and the driving shaft, and the driving mechanism is simple in structure, low in cost and good in driving stability.

The seat I-shaped frame fixing device comprises a second mounting plate 401, the second mounting plate is fixedly connected with a second driving shaft or a third driving shaft, four third fixing blocks 402 are arranged on the second mounting plate, the four third fixing blocks are distributed on the second mounting plate in a rectangular shape, third limiting grooves 4021 are arranged on the third fixing blocks, third limiting holes are formed in the third fixing blocks, third supporting rod pieces 403 shown in figure 13 are placed in the third limiting grooves on the same side, two end portions of each third supporting rod piece are placed in the corresponding third limiting grooves, fourth limiting holes are formed in the positions, close to the two end portions, of each third supporting rod piece, and each fourth limiting hole corresponds to the third limiting hole in the corresponding position; at least two second push-pull type quick clamps 404 are arranged on the second mounting plate, the second push-pull type quick clamps correspond to the third fixing blocks on the two sides respectively, and a second push-pull rod 4041 of each second push-pull type quick clamp is matched with the corresponding third limiting hole and the corresponding fourth limiting hole; at least two fourth fixed blocks 405 are arranged on the second mounting plate, the fourth fixed blocks are located between the two third support rods, the arrangement direction of the two fourth fixed blocks is perpendicular to the arrangement direction of the two third fixed blocks on the same side, a fourth limiting groove 4051 is arranged on the fourth fixed blocks, a fourth support rod 406 is placed in the fourth limiting groove, and two ends of the fourth support rod are respectively in contact with the third support rods in corresponding positions. The second mounting plate provides mounting positions for all parts in the corresponding device and serves as a mounting platform; the four third fixing blocks which are arranged in a rectangular shape provide mounting positions for two third support rod pieces of the seat I-shaped frame, and a third limiting groove on each third fixing block is matched with the shape of each third support rod piece, so that the third support rod pieces cannot shake in the direction perpendicular to the direction of the notch of each third limiting groove; the two second push-pull type quick clamps correspond to the third fixed blocks on the corresponding sides of the two third support rod pieces, and the second push-pull rods of the second push-pull type quick clamps are matched and locked with the fourth limiting holes at corresponding positions, so that the third support rod pieces cannot move in the direction towards the notches of the third limiting grooves; the third limiting groove and the second push-pull type quick clamp cooperate to ensure stable parallel positioning of the two third support rod pieces on the second mounting plate; the installation position of a fourth support rod piece of the seat I-shaped frame is provided by arranging at least two fourth fixed blocks, the arrangement direction of all the fourth fixed blocks is vertical to the third support rod piece, the shape of a fourth limiting groove on each fourth fixed block is matched with that of the fourth support rod piece, so that the fourth support rod piece cannot shake in the direction vertical to the direction of the notch of the fourth limiting groove, the length of the fourth support rod piece is that after the fourth support rod piece is placed in the fourth limiting groove, two end parts of the fourth support rod piece are just contacted with the third support rod piece at the corresponding end, and after the installation, the end part of the fourth support rod piece is just aligned with the middle position of the third support rod piece, so that the fourth support rod piece cannot move in the direction of the notch of the fourth limiting groove; the third limiting groove and the two third support rods cooperate to ensure that one fourth support rod is stably positioned in each horizontal direction of the second mounting plate; after each workpiece is accurately fixed, the workpiece corresponds to the program control welding point position of the arc welding mechanical arm, and the seat I-shaped frame formed after the fixing device and the arc welding mechanical arm are cooperatively welded has the characteristics of accurate welding point, reliable quality, higher welding efficiency and lower labor intensity. Preferably, there are two fourth fixing blocks, and the two fourth fixing blocks correspond to positions near the two end portions after the fourth support rod is installed. The third support rod piece and the fourth support rod piece can be solid steel rods or hollow steel rods.

A fourth quick clamp 407 is arranged on the second mounting plate, and a clamping end of the fourth quick clamp corresponds to the fourth support rod. The fourth presss from both sides fast and can prevent that fourth support rod piece from taking place to rock in the vertical direction of second mounting panel.

At least one fourth jacking air rod 408 is arranged on the second mounting plate, and the fourth jacking air rod corresponds to the third support rod and/or the fourth support rod. After the welding work of the third supporting rod and the fourth supporting rod is completed and all locking is released, the manual air valve switch on the second mounting plate is pulled, the fourth jacking air rod can jack the whole seat I-shaped frame, the seat I-shaped frame is automatically separated from the seat I-shaped frame fixing device, the seat I-shaped frame does not need to be manually pulled up from the corresponding groove position by personnel, the labor is saved, and the personnel only need to take down the seat I-shaped frame jacked up by the fourth jacking air rod.

The number of the fourth jacking air rods is four, the four fourth jacking air rods are distributed on the second mounting plate in a rectangular mode, and the fourth jacking air rods correspond to the third supporting rod pieces and/or the fourth supporting rod pieces. The four fourth jacking air rods which are distributed in a rectangular mode can uniformly stress all parts of the whole seat I-shaped frame, and the seat I-shaped frame is guaranteed to be jacked smoothly without being clamped in the corresponding groove position.

The fourth fixed block is V-shaped, the V-shaped tip of the fourth fixed block points to the third support rod piece on the corresponding side, and the fourth limiting groove is located at the position of the V-shaped tip on the fourth fixed block. The V-shaped tip of the V-shaped fourth fixed block points to the middle position of the third support rod piece on the corresponding side, so that the end position of the fourth support rod piece can contact the middle position of the third support rod piece after the fourth support rod piece is placed in the fourth limiting groove.

The upper surface of the fourth support rod is flush with the upper surface of the third support rod, and the end part of the fourth support rod corresponds to the middle position of the third support rod. The upper surface of the fourth support rod piece is flush with the upper surface of the third support rod piece, so that the appearance of the seat I-shaped frame formed after welding is more attractive.

The second push-pull type quick clamp has four, and the positions of the four second push-pull type quick clamps on the second mounting plate correspond to four third fixing blocks. The stability of the third support rod piece fixed in the third limiting groove is better.

The seat frame fixing device comprises a first mounting plate 501, the first mounting plate is fixedly connected with a second driving shaft or a third driving shaft, a first rod driving cylinder 502 and a first fixing plate 503 are fixedly arranged on the first mounting plate, the driving direction of the first rod driving cylinder is perpendicular to the vertical plane where the first fixing plate is located, a first driving rod 5021 of the first rod driving cylinder penetrates through the inside of the first fixing plate, the first driving rod of the first rod driving cylinder is arranged in a telescopic manner relative to the first fixing plate, a first support piece 5022 is arranged at the end part of the first driving rod of the first rod driving cylinder, first concave parts 5023 are arranged at two ends of the first support piece, and a first connecting piece 504 is placed in each first concave part; a first fixing plate is provided with a first fixing groove 5031, a first rod 505 shown in fig. 11 is placed in the first fixing groove, the first rod is in a zigzag structure, and a low section of the first rod is located outside the first fixing groove; two first push-pull type quick clamps 506 are arranged on the first mounting plate, the first push-pull type quick clamps are opposite to the high-position bent part of the first rod piece, and a fourth connecting piece 507 is attached to the high-position bent part of the first rod piece through a first push-pull rod 5061 of the first push-pull type quick clamps; the first mounting plate is provided with four first mounting blocks 508, two first mounting blocks are positioned on one side close to the first fixing plate on the first mounting plate, the other two first mounting blocks are positioned on one side far away from the first fixing plate on the first mounting plate, the first mounting blocks are provided with a first concave mounting part 5081 and a first air clamp 5082, the clamping end of the first air clamp corresponds to the first concave mounting part, a first triangular bending piece 509 shown in figure 10 is arranged on the first concave mounting part, and two low ends of the first rod piece are respectively contacted with the first triangular bending piece at the corresponding position; two second limiting blocks 510 are arranged on the first mounting plate, a second limiting groove 5101 is arranged on each second limiting block, a second rod piece 511 is placed in each second limiting groove, the second rod piece is located at the lower part of the high section of the first rod piece, the upper surface of the second rod piece is in contact with the lower surface of the high section of the first rod piece, and one end, close to the first rod piece, of the second rod piece is in contact with a fourth connecting piece; the first mounting plate is provided with two first cylinders 512, the two first cylinders are positioned on two sides of the first driving rod, two first clamping plates 5121 are arranged at air passages of the first cylinders, opposite surfaces of the two first clamping plates are respectively provided with at least one first positioning rod 5122, the first clamping plates are attached with first mounting pieces 513 shown in figure 12, each first mounting piece is provided with at least one first mounting hole, and the first mounting holes are matched with the first positioning rods; a first partition plate 5123 is arranged on a shell of the first cylinder, the first partition plate is positioned between the two first clamping plates, the second rod piece is placed on the first partition plate, a first through hole is formed in the first partition plate in a position opposite to the first positioning rod, the first positioning rod is telescopically arranged in the first through hole, the second rod piece is positioned between the two first clamping plates, and two side surfaces of the second rod piece are respectively movably attached to the first mounting pieces on the corresponding sides; a third supporting block 514 is arranged on the first mounting plate, the third supporting block is opposite to the extension direction of the first driving rod, and a third connecting piece 515 is placed on the third supporting block; a third rod piece 516 is placed on the third connecting piece, the third rod piece is of a structure in a shape like a Chinese character 'ji', a high-level section of the third rod piece is placed on the third connecting piece, the upper surface of the high-level section of the third rod piece is lower than that of the high-level section of the first rod piece, two first mounting blocks far away from the first fixing plate respectively correspond to the end parts of two low-level sections of the third rod piece, and the end parts of the low-level sections of the third rod piece are in contact with the first triangular bending pieces at corresponding positions; the first mounting plate is provided with two second mounting blocks 517 which correspond to two low-level ends of the third rod piece respectively, the second mounting blocks are provided with second mounting grooves 5171, and two low-level sections of the third rod piece are positioned in the corresponding second mounting grooves respectively; a second connecting piece 518 is placed on the second fixing block close to the first fixing plate, and the second connecting piece is respectively contacted with the first triangular bending piece and the lower section of the third rod piece. The first mounting plate provides mounting positions for all parts in the corresponding device and serves as a mounting platform; the first rod driving cylinder drives the first supporting piece to reciprocate back and forth, when the first rod driving cylinder pulls back the first supporting piece, the first concave part is close to an operator, the operator can conveniently place the first connecting piece in the first concave part, and when the first rod driving cylinder pushes back the first supporting piece, the installed first connecting piece can be in contact with the first installing piece and the third rod piece, so that the first connecting piece can be conveniently placed in the first concave part; the first fixing plate provides an installation position for the first rod piece, and the shape of the first fixing groove on the first fixing plate is matched with that of the first rod piece, so that the first rod piece cannot shake in a direction perpendicular to the direction of the notch of the first fixing groove; the first rod piece and the third rod piece are both designed into a structure in a shape like a Chinese character 'ji', and are specially designed according to the shape requirement of the seat; the two first push-pull type quick clamps can ensure that the fourth connecting sheet is temporarily and stably attached to the high-position bent part of the first rod piece, so that the stability of the high-position bent parts of the fourth connecting sheet and the first rod piece during welding is ensured; the first mounting block provides mounting positions for the first triangular bending piece and the first air clamp; the second limiting block provides an installation position for the second rod piece, a second limiting groove in the second limiting block is matched with the second rod piece in shape, so that the second rod piece cannot shake in the direction perpendicular to the direction of the notch of the second limiting groove, the second rod piece is close to the fourth connecting piece to be contacted, and the second rod piece cannot move towards the fourth connecting piece again in the second limiting groove under the blocking action of the fourth connecting piece; the first air cylinder controls the two first clamping plates to be clamped and loosened relatively, so that the two first mounting plates are fixed, the first positioning rod realizes primary positioning of the first mounting plates on the first clamping plates, the first partition plate is used for supporting the second rod piece and providing a placing position for the second rod piece on one hand, and the first partition plate is matched with the two first clamping plates on the other hand, so that the two first mounting plates are fixed; the third supporting block provides an installation position for the third connecting piece, and when the third rod piece is placed on the third connecting piece, the third supporting block also provides a supporting function for the third rod piece, so that the stability of the third connecting piece and the third rod piece during welding is ensured; the two second mounting blocks provide mounting positions for the two low-level sections of the third rod piece, the second mounting grooves in the second mounting blocks enable the third rod piece not to shake in the direction perpendicular to the direction of the notch of the second mounting groove, after the third rod piece is mounted, two end parts of the low-level section of the third rod piece are in contact with the first triangular bending pieces at corresponding positions, and under the blocking effect of the first triangular bending pieces at two ends, the third rod piece cannot move in the direction of the notch of the second mounting groove; the second fixing block also provides a mounting position for the second connecting piece, so that the stability of the second connecting piece, the first triangular bending piece and the low section of the third rod piece during welding is ensured; after each workpiece is accurately fixed, the workpiece corresponds to the program control welding point position of the arc welding mechanical arm, and the seat frame formed after the fixing device and the arc welding mechanical arm are cooperatively welded has the characteristics of accurate welding point, reliable quality, higher welding efficiency and lower labor intensity.

A first telescopic block 5024 is arranged at the end part of a first driving rod of the first rod driving cylinder, a first supporting piece is arranged at one end, far away from the first fixing plate, of the first telescopic block, and the first supporting piece is vertically arranged relative to the telescopic direction of the first telescopic block; be equipped with first supporting block 5025 on the first mounting panel, be equipped with first supporting hole 5026 on the first supporting block, first flexible piece is flexible to be set up in the inside in first supporting hole. First flexible piece and first supporting block matched with structure have guaranteed the stability when first actuating lever drives first support piece reciprocating motion, because the excessive connection of first flexible piece and the support of first supporting block, first actuating lever can not receive the too heavy effort of first support piece, and then has guaranteed also that first has the pole to drive the life of actuating cylinder.

The first recess is shaped like a right triangle, and the first connecting piece is shaped like a right triangle. The first concave part of the right triangle is specially designed for the first connecting piece of the right triangle, so that the stability of the first connecting piece when the first connecting piece is placed on the first concave part is guaranteed, and the first connecting piece is arranged to be in the right triangle and is in good contact with the first mounting piece and the third rod piece at the same time.

The two ends of the first supporting piece are provided with first quick clamps 519, and the first clamping ends of the first quick clamps correspond to the first concave parts at the corresponding positions. When first quick clamp makes first connecting piece shelve in first depressed part, can not take place to remove, guarantees the stability of first connecting piece when with first installation piece and third member welding.

A second quick clamp 520 is fixedly arranged on the first shell of the first rod driving cylinder, and a second clamping end of the second quick clamp corresponds to the first fixing groove. The second quick clamp can prevent that first member from taking place to rock in the vertical direction of first fixed plate.

The fourth connecting piece is provided with a first connecting hole, the end part of a first push-pull rod of the first push-pull type quick clamp is provided with a first locking rod 5062, and the fourth connecting piece is attached to the first rod piece through a structure that the first locking rod is matched with the first connecting hole. The first lock rod is matched with the first connecting hole, so that the fourth connecting piece is stably attached to the high-position bending part of the first rod piece.

The first sunken installation part is provided with at least one first positioning pin 5083, the first triangular bending piece is provided with a first positioning hole, and the first positioning pin is matched with the corresponding first positioning hole on the first triangular bending piece. First locating pin and first locating hole phase-match after will first locating hole aim at first locating pin and place, just realized that first triangle is buckled the accurate positioning of piece at first sunken installation department for the piece is buckled to first triangle and the installation location on first sunken installation department is more swift, accurate. The first positioning pins are preferably two, and the two first positioning pins can be used for quickly and accurately installing and positioning the first triangular bending piece.

The first mounting plate is provided with two first limiting blocks 521, the first fixing plate is positioned between the two first limiting blocks, the first limiting blocks are provided with first limiting grooves 5211, and the two low sections of the first rod piece are respectively placed in the corresponding first limiting grooves. The two first limiting blocks provide support for the two low sections of the first rod piece, the two low sections of the first rod piece are placed in the corresponding first limiting grooves, and the first limiting grooves are used as supplements of the first fixing grooves, so that the stability of the first rod piece after installation is better.

The orientation of the second limiting grooves is perpendicular to the vertical plane where the first fixing plate is located, and the two second limiting grooves respectively correspond to the two high-position bends of the first rod piece. After the second rod piece placed in the second limiting groove is placed, the end part of the second rod piece is located at the high-position bending part below the first rod piece and is attached to the fourth connecting piece, so that the second rod piece does not need to be adjusted after being installed, and the second rod piece is fast and convenient to install.

The second limiting block is provided with a second jacking air rod 5212, and the second jacking air rod is opposite to the bottom surface of the second rod piece. When the welding work of the seat frame is completed, after all locking is released, the manual air valve switch on the first mounting plate is pulled, the second jacking air rod jacks up the whole seat frame, the seat frame is automatically separated from the seat frame fixing device, the seat frame is not required to be manually pulled up from the corresponding groove position by personnel, the labor is saved, and the personnel only need to take down the seat frame jacked up by the second jacking air rod.

The extending direction of the first partition board is the same as the direction of the notch of the second limiting groove. The first partition plate is used for supporting the second rod piece and providing a placing position for the second rod piece, and the first partition plate is matched with the two first clamping plates to realize positioning and fixing of the two first mounting pieces.

A sixth quick clamp 522 is arranged on the first clamping plate far away from the first driving rod, and the clamping end of the sixth quick clamp corresponds to the upper surface of the first partition plate. The sixth quick clamp can prevent the second rod piece from shaking in the vertical direction of the first partition plate.

The upper surface of the second rod is flush with the top of the first mounting piece. The upper surface of the second rod piece is flush with the upper surface of the first mounting piece, so that the appearance of the seat frame formed after welding is more attractive.

A first limiting block 5141 is arranged on the third supporting block far away from the first fixing plate, and the high-level section of the third rod piece is in contact with the first limiting block. The first stopper can be as the standard when third member installation on the one hand, that is to say, the high-order section laminating first stopper installation of third member gets off, just can realize the accuracy installation of third member, and on the other hand also can prevent that the third member from thinking to be kept away from one side of first fixed plate and rocking, guarantees the stability after the installation of third member.

The third connector is connected with the third support block by a third inserting rod 5142. The third inserted bar can realize accurate positioning when the third connecting piece is placed on the third supporting block, and the third inserted bar is used for locking, so that the third connecting piece is installed accurately and quickly.

The third connecting piece is in a U-shaped groove shape and buckled on the third supporting block. The third connecting piece is designed into the shape of a U-shaped groove, which is adopted according to the actual requirement of the seat frame.

A third quick clamp 523 is arranged at one end of the third supporting block far away from the first fixing plate, and the clamping end of the third quick clamp corresponds to the high-level section of the third rod piece. The third quick clamp can prevent the third rod piece from shaking in the vertical direction of the third supporting block.

The second connecting piece is in a U-shaped groove shape and buckled on the third fixing block. The second connecting piece is designed into the shape of a U-shaped groove, which is adopted according to the actual requirement of the seat frame.

The top of the second rod piece is flush with the top surface of the high section of the third rod piece, and one end of the second rod piece close to the third rod piece is contacted with the high bending part of the third rod piece. The top of the second rod piece is flush with the top surface of the high section of the third rod piece, so that the appearance of the seat frame formed after welding is more attractive; the contact position of the high-position bent parts of the second rod piece and the third rod piece is a welding point.

The seat driving pipe support fixing device comprises a third mounting plate 601, the third mounting plate is fixedly connected with a second driving shaft or a third driving shaft, two fifth fixing blocks 602 are arranged on the third mounting plate, the two fifth fixing blocks are oppositely arranged on the third mounting plate, at least one fifth fixing groove 6021 is arranged on each fifth fixing block, a fifth fixing hole is formed in each fifth fixing block, and the interior of each fifth fixing hole is communicated with the interior of each fifth fixing groove; the third mounting plate is provided with two sixth fixing blocks 603, the two sixth fixing blocks are oppositely arranged on the third mounting plate, the two sixth fixing blocks correspond to the two fifth fixing blocks respectively, the two sixth fixing blocks and the two fifth fixing blocks are distributed on the third mounting plate in a rectangular shape, the sixth fixing blocks are provided with at least one sixth fixing groove 6031, and the sixth fixing grooves correspond to the fifth fixing grooves on the corresponding sides; a sixth limiting block 604 is arranged on one side, far away from the corresponding fifth fixing block, of the sixth fixing block, the position of the sixth limiting block on the sixth fixing block does not exceed the extension surface of the sixth fixing groove, a sixth limiting hole is formed in the sixth limiting block, a fifth plate 605 shown in fig. 14 is placed in the fifth fixing groove, a fifth locking hole is formed in the position, corresponding to the fifth fixing hole, of the fifth plate, the fifth plate is also placed in the sixth fixing groove, and a sixth locking hole is formed in the position, corresponding to the sixth limiting hole, of the fifth plate; the third mounting plate is provided with four fifth air cylinders 606, the positions of the four fifth air cylinders on the third mounting plate respectively correspond to two fifth fixing blocks and two sixth limiting blocks, a fifth pneumatic rod 6061 of each fifth air cylinder is matched with a fifth fixing hole and a fifth lock hole at corresponding positions, and a fifth pneumatic rod of each fifth air cylinder is matched with a sixth limiting hole and a sixth lock hole at corresponding positions; a group of fifth limiting blocks 607 are arranged on the third mounting plate, fifth limiting grooves 6071 are arranged on the fifth limiting blocks, the direction of the notch of each fifth limiting groove is opposite to that of the sixth limiting hole, a fifth rod piece 608 is placed in each fifth limiting groove, and the end part of each fifth rod piece is in contact with a fifth plate piece in the corresponding position; the third mounting plate is provided with a fifth mounting block 609, the fifth mounting block is provided with a fifth mounting groove 6091, a fifth pipe 610 is placed in the fifth mounting groove, and the end part of the fifth pipe is in contact with the fifth rod. The third mounting plate provides mounting positions for all parts in the corresponding device and serves as a mounting platform; the two fifth fixing blocks and the two sixth fixing blocks are distributed on the third mounting plate in a rectangular shape to provide mounting positions for the two fifth plates, and the fifth fixing grooves and the sixth fixing grooves are matched with the fifth plates in shape, so that the fifth plates cannot shake in a direction perpendicular to the direction of the notches of the fifth fixing grooves and the sixth fixing grooves; the number of the fifth fixing grooves and the number of the sixth fixing grooves may be multiple, the fifth fixing grooves and the sixth fixing grooves are arranged in parallel, and fifth plates may be placed in different fifth fixing grooves and sixth fixing grooves according to different lengths of the fifth rod pieces; the fifth pneumatic rod of the fifth air cylinder is matched and locked with the sixth limiting hole and the fifth locking hole at corresponding positions, so that the fifth plate cannot move in the direction towards the notch of the fifth fixing groove; the fifth fixing groove, the sixth fixing groove and the fifth pneumatic rod cooperate to ensure stable parallel positioning of the two fifth plates on the third mounting plate; the fifth limiting block provides an installation position for the fifth rod piece, the fifth limiting groove enables the fifth rod piece not to shake in the direction perpendicular to the direction of the notch of the fifth limiting groove, and the two fifth plates are respectively in contact with two end parts of the fifth rod piece, so that the fifth rod piece does not move in the direction where the notch of the fifth limiting groove faces; the fifth mounting block provides a mounting position for the fifth pipe fitting, the fifth mounting groove enables the fifth pipe fitting not to shake in a direction perpendicular to the direction of the notch of the fifth mounting groove, and after the fifth pipe fitting is mounted in the fifth mounting groove, the end part of the fifth pipe fitting is in contact with the fifth rod piece, and under the blocking action of the fifth rod piece, the fifth pipe fitting does not move in the direction of the notch of the fifth mounting groove; after each workpiece is accurately fixed, the workpiece corresponds to the program control welding point position of the arc welding mechanical arm, and the seat driving pipe frame formed after the fixing device and the arc welding mechanical arm are cooperatively welded has the characteristics of accurate welding point, reliable quality, higher welding efficiency and lower labor intensity.

The third mounting plate is provided with two fifth supporting portions 611, the two fifth supporting portions are parallel to each other, the fifth supporting portion is located between the two fifth plates, the third mounting plate is provided with at least one sixth supporting block 612, the sixth supporting block is located between the two fifth supporting portions, the sixth supporting block is provided with a sixth fixing hole 6121, the two fifth supporting portions are provided with at least one sixth plate piece 613 shown in fig. 15 and 16, the sixth plate piece is provided with a sixth locking hole, the sixth locking hole corresponds to the sixth fixing hole, and the sixth locking hole is connected with the sixth fixing hole through a sixth plug 614. According to the invention, the two parallel fifth supporting parts are used for supporting the sixth plate, and the structure of the sixth fixing hole matched with the sixth plug connector is used for limiting the sixth plate, so that the sixth plate cannot move relative to the fifth supporting parts, the sixth plate can be stably placed on the fifth supporting parts, and the stability of subsequent welding is ensured.

The orientation of the fifth fixing hole is perpendicular to the orientation of the fifth fixing groove. The fifth fixing hole plays a role of a positioning standard for the fifth plate, when the fifth locking hole at the end of the fifth plate is aligned with the fifth fixing hole, namely when the mounting position of the fifth plate in the fifth fixing groove and the sixth fixing groove is determined, namely when the position to be welded is determined.

The horizontal section of the sixth fixed block is in a right trapezoid shape, and one side, far away from the fifth fixed block, of the sixth fixed block is an inclined plane. The sixth fixing block is designed to be in a right trapezoid shape in horizontal cross section, and compared with a rectangular shape, the material is saved while the same fixing effect is achieved.

The number of fifth defined blocks in the set of fifth defined blocks is at least one. More preferably, the number of the fifth limiting blocks is two, and the two fifth limiting blocks are located at positions close to the two ends of the fifth rod relative to the fifth rod, so that the two fifth limiting blocks can play a role in stably supporting the fifth rod.

The upper surface of the fifth rod is flush with the upper surface of the fifth plate. The top of the fifth rod piece is flush with the upper surface of the fifth plate, so that the appearance of the seat driving pipe frame formed after welding is more attractive; the position where the fifth rod contacts the fifth plate is a welding point.

And a fifth pneumatic rod of a fifth air cylinder corresponding to the end part of the fifth rod piece is telescopically arranged in the fifth rod piece. The fifth rod piece is a hollow steel rod piece, the fifth pneumatic rod can freely stretch and retract without being blocked, and the fifth pneumatic rod can freely extend to the longest position and can also retract to the shortest position.

The notch of the fifth mounting groove faces to be perpendicular to the fifth rod piece, and the notch of the fifth mounting groove faces to the middle position of the fifth rod piece.

The upper surface of the fifth pipe is flush with the upper surface of the fifth rod. The upper surface of the fifth pipe fitting is flush with the upper surface of the fifth rod piece, so that the appearance of the seat driving pipe frame formed after welding is more attractive; the position where the fifth pipe member contacts the fifth rod member is a welding point.

And a sixth air cylinder 615 is arranged on the third mounting plate, a sixth air clamp 6151 is arranged at the driving end of the sixth air cylinder, and the position of the sixth air clamp corresponds to the position of the fifth mounting groove. The sixth cylinder drives the sixth air clamp to clamp and loosen, so that the fifth pipe fitting in the fifth mounting groove is always in good contact with the fifth rod piece, and the fifth pipe fitting cannot shake in the vertical direction in the fifth mounting groove under the clamping action of the sixth air clamp.

Two fifth push-pull type quick clamps 616 are arranged on the third mounting plate, a fifth push-pull rod 6161 of each fifth push-pull type quick clamp is opposite to the side face of the fifth rod piece, and the fifth push-pull type quick clamps are respectively arranged on two sides of the fifth mounting block. The two fifth push-pull type quick clamps are used as subsidiary functions, hole positions are arranged on the side faces of the fifth rod pieces and in positions corresponding to the push-pull rods of the fifth push-pull type quick clamps, and the fifth push-pull type quick clamps can enable the fifth rod pieces to be installed in the fifth limiting grooves to be better in stability.

The sixth plug connector is a sixth plug pin.

A fifth quick clamp 617 is arranged on the third mounting plate, a fifth clamping block 6171 is rotatably arranged at the clamping end of the fifth quick clamp, and the fifth clamping block corresponds to the sixth plate. The fifth clamping block that rotates the setting can contact with one or two sixth slab simultaneously, and under the clamping-action of fifth quick clamp, any rotation can not take place again for the sixth slab on the fifth supporting part, better assurance between sixth plug connector and the sixth locking hole stability in the welding.

The seat underframe fixing device comprises a fourth mounting plate 701, the fourth mounting plate is fixedly connected with the second driving shaft or the third driving shaft, and two seventh clamping cylinders 702 are arranged on the fourth mounting plate; a seventh through hole 703 is formed in the fourth mounting plate close to the seventh clamping cylinder, a seventh mounting block 704 is arranged on the hole wall of the seventh through hole, the direction of the seventh mounting block is the same as the clamping direction of the seventh clamping cylinder, the seventh mounting block is positioned between the two seventh clamping cylinders, and a seventh connecting piece 705 shown in fig. 19 is placed on the seventh mounting block; the fourth mounting plate is provided with two eighth mounting blocks 706 which are positioned at two sides of the seventh through hole, the arrangement direction of the two eighth mounting blocks is parallel to the arrangement direction of the two seventh clamping cylinders, the eighth mounting block is provided with an eighth mounting groove 7061 in which an eighth rod 707 shown in fig. 17 is placed, the bottom surface of the eighth rod is in contact with the upper surface of the seventh connecting piece, and the side surface of the eighth rod close to the seventh clamping cylinder is in movable butt joint with the clamping end of the seventh clamping cylinder; the eighth rod piece is provided with eighth angle pieces 708 at positions close to the two end parts; a tenth rod 709 is placed on the seventh mounting block, the tenth rod is parallel to the eighth rod, and the tenth rod is in contact with the eighth rod; the bottom of the first mounting plate is provided with two seventh cylinders 710, the direction formed by the two seventh cylinders is parallel to the direction formed by the two seventh clamping cylinders, and the two seventh cylinders are positioned on the two sides of the seventh mounting block; the air passage of the seventh cylinder is provided with two seventh clamping plates 7101, the extending direction of the space formed by the two seventh clamping plates is the same as the direction of the seventh mounting block, the opposite surfaces of the two seventh clamping plates are respectively provided with at least one seventh positioning rod 7102, the shell of the seventh cylinder is provided with a seventh clapboard 7103 which is positioned between the two seventh clamping plates, the seventh clapboard is provided with an eighth through hole at the position opposite to the seventh positioning rod, the seventh positioning rod is telescopically arranged in the eighth through hole, the seventh clamping plate is adhered with a seventh mounting plate 711 shown in figure 18, the seventh mounting plate is provided with at least one seventh mounting hole which is matched with the seventh positioning rod, the seventh mounting plate is provided with at least one seventh locking hole, the corresponding locking holes on the two seventh mounting plates are connected through a seventh inserting rod 712, the seventh mounting plate is positioned in the seventh through hole, the seventh mounting plate is contacted with the side surface of the eighth rod piece, the seventh mounting piece is in contact with the corresponding end face of the tenth rod piece; two seventh fixed blocks 713, two seventh supporting parts 714 and two eighth fixed blocks 715 are sequentially arranged on the fourth mounting plate towards the direction far away from the seventh clamping cylinder, the two seventh fixed blocks correspond to the two seventh supporting parts respectively, and the two seventh supporting parts correspond to the two eighth fixed blocks respectively; a seventh fixing groove 7131 is arranged on the seventh fixing block, a notch of the seventh fixing groove is opposite to a space formed by the two seventh clamping plates at corresponding positions, a seventh rod piece 716 is placed in the seventh fixing groove, the seventh rod piece is positioned in the space formed by the two seventh clamping plates, and one end of the seventh rod piece close to the seventh clamping cylinder is contacted with the side surface of the eighth rod piece; the seventh rod piece is contacted with the upper surface of the seventh supporting part; an eighth fixing groove 7151 is formed in the eighth fixing block, the two eighth fixing grooves correspond to the two seventh fixing grooves respectively, and the part, far away from the seventh clamping cylinder, of the seventh rod piece is placed in the eighth fixing groove; two seventh limiting blocks 717 are arranged on the fourth mounting plate, the direction in which the two seventh limiting blocks are arranged is parallel to the direction in which the two eighth mounting blocks are arranged, a seventh limiting groove 7171 is arranged on the seventh limiting block, a ninth rod 718 is arranged in the seventh limiting groove, the seventh rod is positioned between the eighth rod and the ninth rod, and one end of the seventh rod close to the seventh limiting block is contacted with the side surface of the ninth rod; an eighth supporting block 719 is arranged on the fourth mounting plate, an eighth supporting groove 7191 is formed in the eighth supporting block, and the ninth rod is placed in the eighth supporting groove. The fourth mounting plate provides mounting positions for all parts in the corresponding device and serves as a mounting platform; the two seventh clamping cylinders generate pushing acting force on the eighth rod piece, so that the eighth rod piece can be stably fixed in the eighth mounting groove and cannot move left and right in the eighth mounting groove; the seventh mounting block provides mounting positions for the seventh connecting piece and the tenth rod piece, the seventh mounting block is matched with the seventh connecting piece in shape, and the seventh connecting piece realizes stable support on the seventh mounting block; the eighth angle sheet is a workpiece placed according to the requirement of the seat underframe, and is welded with the positions, close to the two end parts, of the eighth rod piece in the follow-up process; the tenth rod piece plays a role in reinforcement, so that the seat underframe has better strength; the two seventh cylinders clamp and loosen the two seventh clamping plates at corresponding positions, so that the two seventh mounting plates are fixed, the seventh positioning rod realizes the primary positioning of the seventh mounting plates on the seventh clamping plates, the seventh partition plate is used for supporting the seventh rod piece and providing a placing position for the seventh rod piece on one hand, and is matched with the two seventh clamping plates on the other hand, so that the two seventh mounting plates are fixed; the seventh plug rod is a workpiece placed according to the requirement of the seat underframe, and connects the two seventh mounting pieces together, and the seventh plug rod is welded with the lock hole on the seventh mounting piece in the subsequent process; the two seventh fixed blocks, the two seventh supporting parts and the two eighth fixed blocks are all provided with mounting positions for a seventh rod piece, the seventh fixed groove on the seventh fixed block and the eighth fixed groove on the eighth fixed block are matched with the shape of the seventh rod piece, so that the seventh rod piece cannot shake in the direction perpendicular to the direction of the notch of the seventh fixed groove, the seventh rod piece is also contacted with the two seventh mounting pieces, the seventh rod piece and the two seventh mounting pieces are welded together in the subsequent process, the end part of the seventh rod piece is also contacted with the eighth rod piece, and the eighth rod piece can ensure that the seventh rod piece cannot move unidirectionally towards the eighth rod piece in the direction of the notch of the seventh fixed groove; the two seventh limiting blocks provide mounting positions for the ninth rod piece, the seventh limiting grooves in the seventh limiting blocks are matched with the ninth rod piece in shape, so that the ninth rod piece cannot shake in the direction perpendicular to the direction of the notch of the seventh limiting grooves, the ninth rod piece is in contact with the end part of the seventh rod piece, the position where the ninth rod piece is in contact with the end part of the seventh rod piece is also a welding point, and the seventh rod piece can be prevented from moving towards the ninth rod piece by the ninth rod piece; the eighth support block also provides a mounting location for the ninth rod member; after each workpiece is accurately fixed, the workpiece corresponds to the program control welding point position of the arc welding mechanical arm, and the seat underframe formed after the fixing device and the arc welding mechanical arm are cooperatively welded has the characteristics of accurate welding point, reliable quality, higher welding efficiency and lower labor intensity.

A seventh clamping block 7021 is arranged at the clamping end of the seventh clamping cylinder, and is of a step structure; the height of the upper surface of the seventh mounting block is not lower than that of the low step surface of the seventh clamping block; and the side surface of the eighth rod piece close to the seventh clamping cylinder is movably butted with the step vertical surface of the seventh clamping block. The step facade of the seventh clamping block can play a role in pushing the eighth rod piece, and the low step surface of the seventh clamping block can properly support the tenth rod piece after penetrating through the eighth rod piece, so that the tenth rod piece is prevented from inclining in the welding process.

The seventh connecting piece is in the shape of a U-shaped groove and buckled on the seventh mounting block. The seventh connector is designed in the shape of a U-shaped slot, which is adopted according to the actual requirements of the seat underframe.

Be equipped with two eighth quick clamps 720 on the fourth mounting panel, the exposed core that the eighth quick clamp was located corresponds with the eighth flitch of relevant position. The eighth quick clamp can guarantee that the eighth gusset is stably installed at the position close to the end on the eighth rod piece.

The top surface of the seventh mounting piece is flush with the upper surfaces of the eighth rod piece and the tenth rod piece; the upper surface of the ninth pin is flush with the upper surface of the seventh pin. The top surface of the seventh mounting piece is flush with the upper surfaces of the eighth rod piece and the tenth rod piece, and the upper surface of the ninth rod piece is flush with the upper surface of the seventh rod piece, so that the appearance of the seat underframe formed after welding is more attractive; the contact positions of the seventh mounting piece, the eighth rod piece and the tenth rod piece and the contact positions of the ninth rod piece and the seventh rod piece are welding points.

The upper surface of the seventh supporting part is flush with the bottom surface of the seventh fixing groove. The seventh supporting portion and the seventh fixing groove can both support the seventh rod piece well.

Two seventh air clamps 721 are disposed on the fourth mounting plate, and the two seventh air clamps correspond to the two seventh supporting portions respectively. Under the clamping action of the seventh air clamp, the seventh rod piece cannot shake in the vertical direction in the seventh fixing groove.

Two seventh air rods 722 are arranged on the fourth mounting plate, and the bottom surfaces of the two seventh air rods correspond to the bottom surfaces of the two seventh rod pieces respectively. When the welding work of the seat bottom frame is completed and all locking is released, the manual air valve switch on the fourth mounting plate is pulled, the seventh air rod can jack up the whole seat bottom frame, the seat bottom frame is automatically separated from the seat bottom frame fixing device, the seat bottom frame is not required to be manually pulled up from the corresponding groove position by personnel, the manpower is saved, and the personnel only need to take down the seat bottom frame jacked up by the seventh air rod.

The bottom surface of the eighth supporting groove and the bottom surface of the seventh limiting groove are positioned on the same plane. The eighth supporting groove and the seventh limiting groove can stably support the ninth rod piece.

An eighth air clamp 7192 is arranged on the eighth supporting block, and a clamping end of the eighth air clamp corresponds to the eighth supporting groove. Under the clamping action of the eighth air clamp, the ninth rod piece cannot shake in the vertical direction in the seventh limiting groove.

A seventh quick clamp 723 is arranged on the fourth mounting plate, and a clamping end of the seventh quick clamp corresponds to the tenth rod piece. Under the clamping action of the seventh quick clamp, the tenth rod piece can be placed on the seventh mounting block more stably, and the tenth rod piece cannot jump in the vertical direction on the seventh mounting block.

The working principle of the invention is as follows:

the first station 301, the second station 302, the third station 303 and the fourth station 304 are distributed in a rectangular manner on the mounting rack in a clockwise direction, the seat I-shaped frame fixing device 400, the seat frame fixing device 500, the seat drive pipe frame fixing device 600 and the seat underframe fixing device 700 are correspondingly mounted in the first station, the second station, the third station and the fourth station, wherein the second mounting plate 401, the first mounting plate 501 and the second drive shaft 3052 are fixedly connected, the third mounting plate 601, the fourth mounting plate 701 and the third drive shaft 3062 are fixedly connected, the second mounting plate and the first mounting plate can be controlled to vertically turn through the second drive motor 3051, and the third mounting plate and the fourth mounting plate can be controlled to vertically turn through the third drive motor 3061.

Seat I-shaped frame: the seat I-shaped frame comprises a third support rod piece and a fourth support rod piece; placing the third support rod 403 in the third limiting groove 4021, aligning a fourth limiting hole on the third support rod with a third limiting hole on the third fixing block 402, and manually operating the second push-pull quick clamp 404 to enable the second push-pull rod 4041 to be inserted into the third limiting hole and the fourth limiting hole in sequence, so that the installation and fixation of the two third support rods on the second installation plate 401 are completed; then the fourth support rod 406 is placed into the fourth limiting groove 4051, at this time, two ends of the fourth support rod are aligned to the middle position of the third support rod, and the two ends of the fourth support rod can be in contact with the third support rod, the two contact positions are two positions to be welded, and the fourth rapid clamp 407 is manually operated to complete the fixation of the fourth support rod by the clamping end of the fourth rapid clamp; thus, the installation and fixation of all the workpieces to be welded on the second installation plate are completed.

Seat frame of the seat: the seat frame comprises a first triangular bending piece, a second connecting piece, a third rod piece, a first mounting piece, a second rod piece, a third connecting piece, a fourth connecting piece and a first rod piece; a third connecting member 515 is fastened to the third supporting block 514, and the third connecting member and the third supporting block are inserted together by using a third inserting rod 5142; a first mounting piece 513 is mounted on a first positioning rod 5122 of the first clamping plate 5121, a first mounting hole on the first mounting piece is matched with the first positioning rod, four first mounting pieces are mounted one by one, a first manual air valve switch on the first mounting plate 501 is manually controlled, and the first air cylinder 512 drives two corresponding first clamping plates 5121 to clamp the first mounting piece on the first partition plate 5123; a first triangular bending piece 509 is placed in a first concave mounting part 5081 on the first mounting block 508, a first positioning hole on the first triangular bending piece is matched with a first positioning pin 5083 on the corresponding first concave mounting part, the first triangular bending piece is sequentially mounted in the first concave mounting parts on four corners, a second manual air valve switch on the first mounting plate is manually controlled, a first air clamp 5082 clamps the first triangular bending piece, and meanwhile, the first driving rod 5021 also pushes the first supporting piece 5022 to move towards the direction of the third supporting block 514; a third rod piece 516 with a little lower height in a shape like a Chinese character 'ji' is placed on the third supporting block, two lower sections of the third rod piece 516 are fixed in the second mounting groove 5171, the third quick clamp 523 is manually controlled, and the clamping end of the third quick clamp clamps the third rod piece; placing the two second bar members 511 in the corresponding second limiting grooves 5101, wherein the second bar members are also located between the two first mounting pieces 513, and both sides of the second bar members are also in contact with the corresponding first mounting pieces, the contact point is a point to be welded, the end of the second bar member is also in contact with the third bar member, and the contact point is a point to be welded; placing the first rod 505 with a relatively high zigzag shape in the first fixing groove 5031 of the first fixing plate 503, wherein the two lower sections of the first rod are placed in the corresponding first limiting grooves 5211, the ends of the two lower sections of the first rod are in contact with the corresponding first triangular bending piece, the contact point is the point to be welded, and the second quick clamp 520 is manually controlled, and the clamping end of the second quick clamp clamps the first rod 505; respectively placing L-shaped fourth connecting pieces 507 at two high-position bending positions of the first rod piece, manually controlling a first push-pull type quick clamp 506 to enable a first locking rod 5062 to be aligned with a first connecting hole of the fourth connecting piece, fixing the fourth connecting piece at the high-position bending position of the first rod piece 505 through a structure that the first locking rod is matched with the first connecting hole, wherein the contact position of the fourth connecting piece and the high-position bending position of the first rod piece is a to-be-welded point position, the fourth connecting piece is also contacted with the end part of the second rod piece, and the contact position is also a to-be-welded point position; the first connecting piece 504 is placed in the corresponding first concave part 5023, and the first quick clamp 519 is manually controlled, and the clamping end of the first quick clamp stably fixes the first connecting piece in the first concave part; therefore, the installation and fixation of all the workpieces to be welded on the first installation plate are completed.

Then manually controlling the switch of the first driving motor, the first driving shaft 101 drives the seat i-frame fixing device 400 and the seat frame fixing device 500 on the first station 301 and the second station 302, within the welding range of the arc welding mechanical arm 200, the arc welding mechanical arm regularly completes the whole forming welding work of the seat i-frame and the seat frame according to the set program of the computer, after the welding work is completed, the switch of the first driving motor is manually controlled again, the first driving shaft 101 drives the seat i-frame fixing device and the seat frame fixing device on the first station and the second station, to the side far away from the arc welding mechanical arm, namely the side where the worker is located, the worker opens all the quick clamps, opens the first clamping plate 5121 and all the air clamps, manually controls the corresponding manual air valve switch 800, and the fourth jacking air rod 408 can jack up the whole seat i-frame, the second jacking air rod 5212 can jack up the whole seat frame, and only the seat i-shaped frame and the seat frame need to be manually taken down, so that the work from the installation of a workpiece to the welding of the whole seat i-shaped frame and the seat frame is completed.

When the seat i-frame and the seat frame are welded, a worker may mount corresponding workpieces to be welded on the seat driving pipe frame fixing device 600 and the seat bottom frame fixing device 700.

Seat drive pipe support and bracket mount: the driving pipe frame comprises a fifth plate, a fifth rod and a fifth pipe fitting; the bracket fixing frame comprises a sixth plate and a sixth plug connector; placing the fifth plate 605 in the corresponding fifth and sixth fixing grooves 6021 and 6031, aligning the fifth locking hole of the fifth plate with the corresponding fifth and sixth limiting holes; placing the fifth bar 608 in the fifth defining groove 6071, and both ends of the fifth bar are in contact with the corresponding fifth plate, which is a point to be welded; placing the fifth pipe member 610 in the fifth installation groove 6091 such that the end of the fifth pipe member is in contact with the middle position of the fifth bar member, which is the point to be welded; the manual air valve switch 800 on the third mounting plate 601 is manually controlled, the fifth pneumatic rod 6061 is locked with the fifth lock hole after extending out, the fifth plate is firmly fixed in the fifth fixing groove and the sixth fixing groove, and part of the fifth pneumatic rod also extends into the two ends of the fifth rod member, the fifth pneumatic rod can also prevent the fifth rod member from jumping in the vertical direction, and meanwhile, the sixth air cylinder 615 also drives the sixth air clamp 6151 to firmly fix the fifth pipe member 610 in the fifth mounting groove 6091; inserting two sixth plug connectors 614 into sixth locking holes on the sixth plate 613, inserting the sixth plug connectors into sixth fixing holes on the third mounting plate 601, placing the two sixth plates on the fifth supporting portion 611 in parallel, rotating the fifth clamping block 6171 to be parallel to the fifth supporting portion, aligning the fifth clamping block to the two sixth plates at the same time, manually controlling the fifth quick clamp 617, and stably fixing the sixth plates on the fifth supporting portion through the fifth clamping block; thus, the installation and fixation of all the workpieces to be welded on the third installation plate are completed.

Seat underframe: the underframe comprises a ninth rod piece, a seventh rod piece, an eighth angle piece, an eighth rod piece, a seventh inserting rod, a seventh mounting piece, a tenth rod piece and a seventh connecting piece; a seventh connecting piece 705 is buckled on the seventh mounting block 704; a seventh mounting piece 711 is mounted on a seventh positioning rod 7102 of the seventh clamping plate 7101, seventh mounting holes in the seventh mounting piece are matched with the seventh positioning rod, so that four seventh mounting pieces are mounted one by one, a first manual air valve switch 800 on the fourth mounting plate 701 is manually controlled, and the seventh air cylinder 710 drives the corresponding two seventh clamping plates 7101 to clamp the seventh mounting piece 711 on a seventh partition plate 7103; an eighth rod member 707 is installed in the eighth installation groove 7061, wherein the eighth rod member contacts with the upper surface of the seventh installation piece, and the contact point is a point to be welded; placing an eighth angle piece 708 at the position of the eighth rod piece close to the two end parts respectively, and manually controlling an eighth quick clamp 720, wherein the eighth angle piece is firmly fixed at the position of the eighth rod piece 707 close to the two end parts by a clamping end of the eighth quick clamp, and the contact position of the eighth angle piece and the eighth rod piece is also a to-be-welded point; placing a tenth rod 709 on the seventh mounting block 704, wherein two end parts of the tenth rod are in contact with seventh mounting pieces 711 on corresponding sides, the contact point is a point to be welded, and then manually controlling a seventh quick clamp 723, and the tenth rod is firmly fixed on the seventh mounting block 704 by a clamping end of the seventh quick clamp; a seventh rod 716 is placed in the seventh fixing groove 7131 and the eighth fixing groove 7151, the end of the seventh rod is in contact with the eighth rod, and the contact point is a point to be welded; a ninth rod 718 is placed in the seventh limiting groove 7171, a second manual air valve switch on the fourth mounting plate 701 is manually controlled, a seventh air clamp 721 firmly fixes the seventh rod 722 on the seventh supporting part 714, an eighth air clamp 7192 firmly fixes the ninth rod 718 in the eighth supporting groove 7191, a seventh clamping air cylinder 702 also drives a seventh clamping block 7021 to push out, the seventh clamping block applies pushing force to the eighth rod, the low-step surface of the seventh clamping block is also supported at the lower parts of the eighth rod and the tenth rod to play a supporting role, at the moment, the end part of the seventh rod is in contact with the side surface of the ninth rod, and the contact point is a point to be welded; therefore, the installation and fixation of all the workpieces to be welded on the fourth installation plate are completed.

When the first driving shaft 101 drives the seat I-shaped frame fixing device 400 and the seat base frame fixing device 500 on the first station 301 and the second station 302 to the side far away from the arc welding mechanical arm 200, namely the side where a worker is located, the seat driving pipe frame fixing device 600 and the seat base frame fixing device 700 on the third station 303 and the fourth station 304 can be in the welding range of the arc welding mechanical arm, the arc welding mechanical arm regularly completes the whole forming welding work of the seat driving pipe frame and the seat base frame according to the setting program of the computer again, after the welding work is completed, the switch of the first driving motor is manually controlled again, the worker opens all the quick clamps, opens all the seventh clamping plates 7101 and all the air clamps, manually controls the corresponding manual air valve switches 800, the seventh air rods 722 can jack up the whole seat base frame, and only needs to manually take down the seat base frame, thus, the whole work from the installation of the workpiece to the completion of welding of the seat driving pipe frame and the seat underframe is completed.

The arc welding mechanical arm used in the invention is the arc welding mechanical arm disclosed in the invention patent with the application number of CN 201520991034.1.

Claims

1. A I-shaped frame welding mechanism for seat iron stand, characterized by: the I-shaped frame comprises a third support rod piece and a fourth support rod piece; the I-shaped frame welding mechanism comprises a first driving device (100) and an arc welding mechanical arm (200), wherein a mounting frame (300) is arranged at the driving end of the first driving device, a first station (301) is arranged on the mounting frame, a seat I-shaped frame fixing device (400) is arranged in the first station, and the arc welding free end of the arc welding mechanical arm corresponds to the contact position of each workpiece of the seat I-shaped frame fixing device; the seat I-shaped frame fixing device comprises a second mounting plate (401), wherein four third fixing blocks (402) are arranged on the second mounting plate, the four third fixing blocks are distributed on the second mounting plate in a rectangular shape, third limiting grooves (4021) are arranged on the third fixing blocks, third limiting holes are formed in the third fixing blocks, third supporting rod pieces (403) are placed in the third limiting grooves on the same side, two end portions of each third supporting rod piece are placed in the corresponding third limiting grooves, fourth limiting holes are formed in the positions, close to the two end portions, of each third supporting rod piece, and each fourth limiting hole corresponds to the third limiting hole in the corresponding position; at least two second push-pull type quick clamps (404) are arranged on the second mounting plate, the second push-pull type quick clamps correspond to the third fixing blocks on the two sides respectively, and second push-pull rods (4041) of the second push-pull type quick clamps are matched with the corresponding third limiting holes and fourth limiting holes; be equipped with two at least fourth fixed blocks (405) on the second mounting panel, the fourth fixed block is located between two third support members, and the direction that two fourth fixed blocks were arranged is mutually perpendicular with the direction that two third fixed blocks of homonymy were arranged, be equipped with fourth restricted slot (4051) on the fourth fixed block, fourth support member (406) have been shelved in the fourth restricted slot, the both ends of fourth support member contact with the third support member of relevant position respectively.

2. The i-frame welding mechanism for a seat iron frame as claimed in claim 1, wherein: and a fourth quick clamp (407) is arranged on the second mounting plate, and the clamping end of the fourth quick clamp corresponds to the fourth support rod piece.

3. The i-frame welding mechanism for a seat iron frame as claimed in claim 1, wherein: and at least one fourth jacking air rod (408) is arranged on the second mounting plate and corresponds to the third support rod piece and/or the fourth support rod piece.

4. The i-frame welding mechanism for a seat iron frame according to claim 3, wherein: the fourth jacking air bars are four and distributed in a rectangular mode on the second mounting plate, and correspond to the third supporting rod piece and/or the fourth supporting rod piece.

5. The i-frame welding mechanism for a seat iron frame as claimed in claim 1, wherein: the fourth fixed block is V-shaped, a V-shaped tip of the fourth fixed block points to the third support rod piece on the corresponding side, and the fourth limiting groove is located at the position of the V-shaped tip on the fourth fixed block.

6. The i-frame welding mechanism for a seat iron frame as claimed in claim 1, wherein: the upper surface of the fourth support rod is flush with the upper surface of the third support rod, and the end part of the fourth support rod corresponds to the middle position of the third support rod.

7. The i-frame welding mechanism for a seat iron frame as claimed in claim 1, wherein: the second push-pull type quick clamp comprises four push-pull type quick clamps, and the positions of the four second push-pull type quick clamps on the second mounting plate correspond to four third fixing blocks.

8. Welding equipment, characterized by: comprises a first driving device (100) and an arc welding mechanical arm (200), wherein the driving end of the first driving device is provided with a mounting rack (300), the mounting rack is provided with a first station (301), a second station (302), a third station (303) and a fourth station (304), the first station, the second station, the third station and the fourth station are distributed on the mounting rack in a rectangular shape, a seat I-shaped frame fixing device (400), a seat frame fixing device (500), a seat driving pipe frame fixing device (600) and a seat bottom frame fixing device (700) are respectively arranged in the first station, the second station, the third station and the fourth station, and the arc welding free ends of the arc welding mechanical arms respectively correspond to the contact positions of workpieces on the seat I-shaped frame fixing device, the seat frame fixing device, the seat driving pipe frame fixing device and the seat underframe fixing device.

9. The welding apparatus of claim 8, wherein: and a second driving device (305) and a third driving device (306) are arranged on the mounting frame side by side, a second driving shaft of the second driving device is fixedly connected with the two fixing devices which are parallel to each other, and a third driving shaft of the third driving device is fixedly connected with the other two fixing devices which are parallel to each other.

10. The welding apparatus of claim 9, wherein: the first driving device is composed of a first driving motor and a first driving shaft (101) arranged at the driving end of the first driving motor, and the first driving shaft is fixedly connected with the mounting frame; the second driving device is composed of a second driving motor (3051) and a second driving shaft (3052) arranged at the driving end of the second driving motor, and the second driving motor is fixedly arranged on the mounting frame; the third driving device is composed of a third driving motor (3061) and a third driving shaft (3062) arranged at the driving end of the third driving motor, and the third driving motor is fixedly arranged on the mounting frame.