Elevator sheet metal part welding fixing device and fixing method

Abstract

The invention relates to the technical field of welding fixing devices, and discloses an elevator sheet metal part welding fixing device and a fixing method. Comprising a supporting frame and further comprises two mechanical arm assemblies which are arranged in a mirror image mode and connected with the supporting frame, the two mechanical arm assemblies are each in transmission connection with two rotating shafts, the two rotating shafts are each provided with a fixing part, the two hanging and clamping parts are installed in the middle of the supporting frame, and each fixing part comprises an inner frame and side frames arranged on the two sides of the inner frame; the shear type telescopic modules are installed between the inner frame and the side frames, and the transmission module is installed on the inner frame and drives the two shear type telescopic modules to stretch out and draw back synchronously. When the fixing device is used, on one hand, relative multi-angle, multi-space and multi-position butt welding of two sheet metal parts can be achieved, on the other hand, displacement or transposition welding can be achieved in the welding process, and the welding device further has multiple welding modes during welding.

Description

Technical Field

[0001] The present invention relates to the technical field of elevator sheet metal welding and fixing devices and fixing methods, and in particular to an elevator sheet metal welding and fixing device and a fixing method. Background Art

[0002] Elevators are composed of many components, including sheet metal parts of various shapes. During the welding process of sheet metal parts, the positioning accuracy between the welding workpiece and the welded part is particularly important, so a sheet metal welding fixture is required.

[0003] In the prior art, a patent document with publication number CN116511775A discloses an elevator sheet metal welding and fixing device, comprising a mechanical arm, and also comprising a clamping claw assembly, an x-axis positioning device and a z-axis positioning device installed at the end of the mechanical arm, wherein the clamping claw assembly is used to clamp and fix the weldment, the x-axis positioning device is used to position the weldment in the horizontal direction, and the z-axis positioning device is used to position the weldment in the vertical direction. The above device achieves the purposes of automatic grasping, automatic positioning and automatic welding, reduces the operation steps of handheld weldment welding, and improves welding efficiency. However, on the one hand, the above welding and fixing device is not convenient for realizing relative multi-angle, multi-space and multi-position butt welding of two sheet metal parts, and on the other hand, it is not convenient for realizing displacement or transfer welding of sheet metal parts during the welding process, and the welding mode of the existing welding device is relatively single during welding. Based on this, the present invention provides an elevator sheet metal welding and fixing device and a fixing method to solve the technical problems raised in the above background technology. Summary of the invention

[0004] The purpose of the present invention is to provide an elevator sheet metal welding and fixing device and a fixing method, which solves the problem that the existing welding and fixing devices mentioned in the background technology are not convenient for realizing relative multi-angle, multi-space and multi-position butt welding of two sheet metal parts on the one hand, and are not convenient for realizing displacement or transfer welding of sheet metal parts during the welding process on the other hand, and the welding mode of the existing welding devices is relatively single during welding.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] An elevator sheet metal welding fixture comprises a support frame and also includes:

[0007] Two rotating shafts, each of which is provided with a fixing component, wherein the fixing component comprises an inner frame and side frames arranged on both sides of the inner frame, and a scissor-type telescopic module is installed between the inner frame and the side frames;

[0008] Two hanging clamp components installed in the middle of the support frame;

[0009] The transmission module is installed on the inner frame and drives the two scissor-type telescopic modules to telescope synchronously;

[0010] A group of point clamping components installed on the scissor-type telescopic module, each of which is equipped with a point clamping platform;

[0011] Two groups of adjusting push rods, the two groups of adjusting push rods are respectively fixedly connected to the two inner frames, and the movable end of each group of adjusting push rods and each point clamping platform are installed with a clamping frame, and the clamping module is installed in the clamping frame;

[0012] The guiding component is installed on the inner frame and connected with the clamping module.

[0013] Preferably, it also includes a robotic arm assembly respectively connected to the two rotating shafts, the robotic arm assembly includes a walking platform, four electric walking wheels connected to the support frame are installed on the walking platform, an electric rotator is installed on the bottom surface of the walking platform, a rotating platform is installed on the rotating surface of the electric rotator, a first robotic arm is hinged on the rotating platform, a second robotic arm is hinged on the front end of the first robotic arm, a third robotic arm is hinged on the front end of the second robotic arm, a group of arm adjustment push rods are hinged between the first robotic arm and the rotating platform, between the second robotic arm and the first robotic arm, and between the third robotic arm and the second robotic arm, a rotating motor is installed on the third robotic arm, and the output shaft end of the rotating motor is fixedly connected to the rotating shaft.

[0014] Preferably, the hanging clamp component comprises a roller rotatably connected to the inner wall of the support frame and driven by a first motor, a hanging cable is wound on the roller, and a hanging hook is installed at the bottom end of the hanging cable.

[0015] Preferably, the scissor-type telescopic module comprises a group of "X"-shaped frames distributed in a linear array and hinged in pairs in sequence, and two symmetrically arranged rotating sleeves are provided at the hinges of each of the "X"-shaped frames, and the rotating sleeves are hollow tubular structures with openings at both ends, and fixed hinge seats are fixedly installed on the inner frame and the side frame, and the inner walls of the inner frame and the side frame are slidably connected with movable hinge seats, and the fixed hinge seats and the movable hinge seats are hinged to the "X"-shaped frames at adjacent positions.

[0016] Preferably, the transmission module includes a second motor installed on the inner frame and two transmission screws rotatably connected to the inner frame, a driving gear is installed on the output shaft end of the second motor, and a driven gear connected to the driving gear is fixedly installed on the bottom ends of the two transmission screws, and the two transmission screws are respectively connected to the two movable hinge seats on the inner frame.

[0017] Preferably, the point clamping assembly includes a slide groove opened on the back of the point clamping platform, the inner wall of the slide groove is slidably connected with a driven slider, and elastic pressure pieces are installed on the back of the driven slider and the point clamping platform, and the two elastic pressure pieces are rotatably connected to the rotating sleeves at corresponding positions.

[0018] Preferably, the guiding components respectively include an air pump, a vacuum pump, a first hose, a second hose and a vacuum hose installed on the back of the inner frame, the port of the air pump is connected to the first hose and the second hose respectively, the first hose and the second hose are both equipped with an air pressure probe and a first solenoid valve, the port of the vacuum pump is connected to the vacuum hose, and the first hose, the second hose and the vacuum hose are all connected to the clamping module.

[0019] Preferably, the clamping module includes an indexing seat rotatably connected to the inner wall of the clamping frame, and an electromagnet, a clamping plate, a contoured clamp bag and a group of vacuum suction feet are respectively installed on the indexing seat. An air guide cavity and a vacuum cavity are respectively opened inside the indexing seat, and the inner cavity of the contoured clamp bag is connected to the air guide cavity, and each of the vacuum suction feet is connected to the vacuum cavity. The air guide cavity is connected to the first hose through a first corrugated connecting pipe, and the vacuum cavity is connected to the vacuum hose through a second corrugated connecting pipe. A guiding module linked to the indexing seat is installed on the clamping frame.

[0020] Preferably, the guide module includes a power cylinder fixed on the clamp frame, the inner wall of the power cylinder is rotatably connected to a power shaft, the power shaft is transmission-connected to a transfer seat through a belt, a torsion spring is fixedly provided at the rotational connection between the power shaft and the power cylinder, a pneumatic blade fitting with the power cylinder is installed on the power shaft, the power cylinder is connected to a third corrugated coupling pipe, each third corrugated coupling pipe is installed with a second solenoid valve, and the third corrugated coupling pipe is connected to the second hose.

[0021] Preferably, a fixing method for an elevator sheet metal welding fixture comprises the following steps:

[0022] SS01, layout: before the elevator sheet metal is welded and fixed, two mechanical arm assemblies drive two fixed parts to be laid out at a set angle. After the angle of the fixed parts is adjusted, the distance between the inner frame and the side frame of the two fixed parts is adjusted according to the area of ​​the elevator sheet metal to be fixed;

[0023] SS02, fixation. Before fixation, according to the material and shape of the elevator sheet metal to be welded, the indexing seats in the multiple point clamping components are rotated to a set angle, and the two sets of adjustment push rods are expanded to a set stroke, and then the elevator sheet metal is welded.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0025] 1. When the fixing device is used, on the one hand, it can realize the relative multi-angle, multi-space and multi-position butt welding of two sheet metal parts, and on the other hand, it can realize displacement or transfer welding during the welding process. In addition, the welding device also has multiple welding modes during welding, thereby effectively improving the versatility and usage scenarios of the fixing device.

[0026] 2. During the welding operation of the present invention, after the two fixing components fix the sheet metal parts to be welded, the hanging clamp component can serve the purpose of auxiliary fixation of the elevator sheet metal parts to be welded. After the two elevator sheet metal parts are initially welded, the initially welded sheet metal parts can be auxiliary fixed and auxiliary clamped by setting the hanging clamp component. Through the auxiliary fixation and auxiliary clamping, the fixed position and fixed angle of the two fixing components can be converted and transformed, thereby realizing the variable-angle fixation of the elevator sheet metal parts by the device. By realizing the variable-angle fixing function, the functionality of the fixing device is effectively improved.

[0027] 3. The present invention can adjust the spatial layout position and spatial layout angle of the fixing components in multiple directions through the arrangement of an electric rotator, a first robotic arm, a second robotic arm, a third robotic arm and a rotating shaft, and the spatial layout position and spatial layout angle of the two fixing components and the two robotic arm assemblies can be adjusted independently, so that the fixing device can achieve relative multi-angle, multi-space and multi-position fixation of two sheet metal parts before welding, thereby effectively improving the applicable scenarios of the fixing device and making the device suitable for a variety of welding modes.

[0028] 4. This fixing device has multiple welding fixing modes when welding sheet metal parts. When fixing sheet metal parts, when it is necessary to realize magnetic fixation of sheet metal parts, the electromagnet faces the sheet metal parts to be fixed and magnetically fixes the sheet metal parts. When it is necessary to realize vacuum adsorption fixation of sheet metal parts, the vacuum suction feet face the sheet metal parts to be fixed and vacuum adsorb and fix the sheet metal parts. When it is necessary to realize the contour clamping fixation of irregular elevator sheet metal parts, the contour clamp bags on the two side frames work and contour fix the irregular elevator sheet metal parts. When it is necessary to realize hard clamping fixation of elevator sheet metal parts, the splint works.

[0029] 5. This fixing device, through the setting of multiple point clamping components, can achieve multi-point fixation and multi-point limiting of elevator sheet metal parts when fixing elevator sheet metal parts, thereby effectively improving the fixing strength and fixing stability of this fixing device on the sheet metal parts to be welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural schematic diagram of a welding and fixing device for elevator sheet metal parts;

[0031] Figure 2 It is a structural schematic diagram of the walking platform and the rotating platform;

[0032] Figure 3 It is a structural schematic diagram of the side frame and the adjusting push rod;

[0033] Figure 4 for Figure 3 A schematic diagram of the rear view perspective structure;

[0034] Figure 5 for Figure 4 A schematic diagram of the local enlarged structure at point A in the middle;

[0035] Figure 6 for Figure 4 A schematic diagram of the local enlarged structure at B in the middle;

[0036] Figure 7 for Figure 4 A schematic diagram of the local enlarged structure at C in the middle;

[0037] Figure 8 It is a structural schematic diagram of the rotating shaft and the adjusting push rod;

[0038] Fig. 9 for Figure 8 A schematic diagram of the local enlarged structure at D in the middle;

[0039] Fig.10 It is a schematic diagram of the cross-sectional structure of the transfer seat and the splint.

[0040] Among them: 1. Support frame; 2. Rotating shaft; 3. Inner frame; 4. Side frame; 5. Scissor-type telescopic module; 6. Point clamping platform; 7. Adjusting push rod; 8. Clamping frame; 9. Walking platform; 10. Electric walking wheel; 11. Electric rotator; 12. Rotating platform; 13. First mechanical arm; 14. Second mechanical arm; 15. Third mechanical arm; 16. Adjusting arm push rod; 17. Rotating motor; 18. First motor; 19. Roller; 20. Cable; 21. Rotating sleeve; 22. Second electric machine; 23, transmission screw; 24, slide; 25, driven slider; 26, elastic pressure member; 27, air pump; 28, vacuum pump; 29, first hose; 30, second hose; 31, vacuum hose; 32, air pressure probe; 33, indexing seat; 34, electromagnet; 35, clamp; 36, contour clamp bag; 37, vacuum suction foot; 38, air guide cavity; 39, vacuum cavity; 40, power cylinder; 41, power shaft; 42, torsion spring; 43, third corrugated connecting pipe. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] See also Figure 1-10 , an elevator sheet metal welding fixture, comprising a support frame 1, and further comprising:

[0043] Two mechanical arm assemblies arranged in mirror image and connected to the support frame 1, both mechanical arm assemblies are drivingly connected to two rotating shafts 2, and both rotating shafts 2 are installed with fixing components;

[0044] The mechanical arm assembly includes a walking platform 9, on which are mounted four electric walking wheels 10 connected to the support frame 1;

[0045] A guide rail matched with the electric running wheel 10 is fixedly arranged on the support frame 1;

[0046] By setting the electric travel wheel 10, the layout position of the mechanical arm assembly on the support frame 1 and the relative distance between the two mechanical arm assemblies can be changed, so that the device can perform welding and fixing operations on elevator panels of different specifications or shapes;

[0047] An electric rotator 11 is installed on the bottom surface of the walking platform 9, and a rotating platform 12 is installed on the rotating surface of the electric rotator 11. A first mechanical arm 13 is hinged on the rotating platform 12, and a second mechanical arm 14 is hinged on the front end of the first mechanical arm 13. A third mechanical arm 15 is hinged on the front end of the second mechanical arm 14. A group of arm adjustment push rods 16 are hinged between the first mechanical arm 13 and the rotating platform 12, between the second mechanical arm 14 and the first mechanical arm 13, and between the third mechanical arm 15 and the second mechanical arm 14. A rotating motor 17 is installed on the third mechanical arm 15, and the output shaft end of the rotating motor 17 is fixedly connected to the rotating shaft 2;

[0048] By setting the electric rotator 11, the first mechanical arm 13, the second mechanical arm 14, the third mechanical arm 15 and the rotating shaft 2, the spatial layout position and spatial layout angle of the fixed component can be adjusted in multiple directions;

[0049] Moreover, the spatial layout positions and spatial layout angles of the two fixing parts and the two mechanical arm assemblies can be independently adjusted, so that the fixing device can realize the relative multi-angle, multi-space and multi-position fixation of two sheet metal parts before welding, thereby effectively improving the applicable scenarios of the fixing device and making the device applicable to various welding modes;

[0050] Two hanging clamp components installed in the middle of the support frame 1;

[0051] The hanging clamp component includes a roller 19 rotatably connected to the inner wall of the support frame 1 and driven by a first motor 18, a hanging cable 20 is wound on the roller 19, and a hook is installed at the bottom end of the hanging cable 20;

[0052] During welding, after the two fixing components fix the sheet metal parts to be welded, the hanging clamp component can serve as an auxiliary fixation for the elevator sheet metal parts to be welded;

[0053] After the two elevator sheet metal parts are initially welded, the initially welded sheet metal parts can be auxiliary fixed and auxiliary clamped by setting the hanging clamp parts. Through the auxiliary fixing and auxiliary hanging clamping, the fixed positions and fixed angles of the two fixing parts can be converted and transformed, thereby realizing the variable angle fixing of the elevator sheet metal parts by the device. By realizing the variable angle fixing function, the functionality of the fixing device is effectively improved;

[0054] The fixed component includes an inner frame 3 and side frames 4 arranged on both sides of the inner frame 3, and a scissor-type telescopic module 5 is installed between the inner frame 3 and the side frames 4;

[0055] A transmission module is installed on the inner frame 3 and drives the two scissor-type telescopic modules 5 to telescope synchronously;

[0056] The scissor-type telescopic module 5 includes a group of "X"-shaped frames distributed in a linear array and hinged in pairs in sequence. Two symmetrically arranged rotating sleeves 21 are provided at the hinges of the two "X"-shaped frames. The rotating sleeves 21 are hollow tubular structures with openings at both ends. Fixed hinge seats are fixedly installed on the inner frame 3 and the side frame 4. The inner walls of the inner frame 3 and the side frame 4 are slidably connected with movable hinge seats. The fixed hinge seats and the movable hinge seats are hinged to the "X"-shaped frames at adjacent positions.

[0057] The transmission module includes a second motor 22 mounted on the inner frame 3 and two transmission screws 23 rotatably connected to the inner frame 3. A driving gear is mounted on the output shaft end of the second motor 22. A driven gear connected to the driving gear is fixedly mounted on the bottom ends of the two transmission screws 23. The two transmission screws 23 are respectively connected to the two movable hinge seats on the inner frame 3.

[0058] The transmission module and the scissor-type telescopic module 5 are both common components in the prior art and will not be described in detail here;

[0059] A group of point clamping components installed on the scissor-type telescopic module 5, each point clamping component is installed with a point clamping platform 6;

[0060] Two groups of adjusting push rods 7, the two groups of adjusting push rods 7 are respectively fixedly connected to the two inner frames 3, and a clamping frame 8 is installed on the movable end of each group of adjusting push rods 7 and each point clamping platform 6, and a clamping module is installed in the clamping frame 8;

[0061] The point clamping assembly includes a slide groove 24 provided on the back of the point clamping platform 6, a driven slider 25 is slidably connected to the inner wall of the slide groove 24, and elastic pressure members 26 are installed on the back of the driven slider 25 and the point clamping platform 6, and the two elastic pressure members 26 are rotatably connected to the rotating sleeve 21 at the corresponding position;

[0062] The elastic pressure member 26 comprises a telescopic tube, which is rotatably connected to the rotating sleeve 21, and a compression spring is provided on the telescopic section of the telescopic tube;

[0063] The guiding component is installed on the inner frame 3 and connected with the clamping module.

[0064] The guiding components include an air pump 27, a vacuum pump 28, a first hose 29, a second hose 30 and a vacuum hose 31 installed on the back of the inner frame 3. The port of the air pump 27 is connected to the first hose 29 and the second hose 30 respectively. The first hose 29 and the second hose 30 are both installed with an air pressure probe 32 and a first solenoid valve.

[0065] The first solenoid valve is provided to independently control whether the air pump 27 is connected to the first hose 29 and the second hose 30;

[0066] By setting the air pressure probe 32, the air pressure value in the first hose 29 and the second hose 30 is monitored in real time;

[0067] A port of the vacuum pump 28 is in communication with a vacuum hose 31 , and the first hose 29 , the second hose 30 , and the vacuum hose 31 are all in communication with the clamping module.

[0068] The clamping module includes an indexing seat 33 rotatably connected to the inner wall of the clamping frame 8, and the electric clamping platform and the adjusting push rod 7 are both fixedly connected to the clamping frame 8 at the corresponding position;

[0069] The inner wall of the clamp frame 8 is rotatably connected to a transfer seat 33, on which an electromagnet 34, a clamp plate 35, a contoured clamp capsule 36 and a group of vacuum suction feet 37 are respectively installed. An air guide cavity 38 and a vacuum cavity 39 are respectively opened inside the transfer seat 33. The inner cavity of the contoured clamp capsule 36 is connected to the air guide cavity 38, and each vacuum suction foot 37 is connected to the vacuum cavity 39. The air guide cavity 38 is connected to the first hose 29 through a first corrugated connecting pipe, and the vacuum cavity 39 is connected to the vacuum hose 31 through a second corrugated connecting pipe. A guide module linked to the transfer seat 33 is installed on the clamp frame 8.

[0070] When the sheet metal part is fixed, when the magnetic fixation of the sheet metal part is required, the electromagnet 34 is directly opposite to the sheet metal part to be fixed and magnetically fixes the sheet metal part;

[0071] When it is necessary to implement vacuum adsorption fixation of the sheet metal part, the vacuum suction foot 37 is positioned at the sheet metal part to be fixed and vacuum adsorbs and fixes the sheet metal part;

[0072] When it is necessary to realize the contour clamping and fixing of the irregular elevator sheet metal parts, the contour clamping bags 36 on the two side frames 4 work and contour fix the irregular elevator sheet metal parts;

[0073] When it is necessary to implement hard clamping and fixing of the elevator sheet metal, the clamping plate 35 works;

[0074] At the same time, by setting up multiple point clamping components, it is possible to achieve multi-point fixation and multi-point limiting of elevator sheet metal parts when fixing elevator sheet metal parts, thereby effectively improving the fixing strength and fixing stability of the fixing device for the sheet metal parts to be welded;

[0075] The guide module includes a power cylinder 40 fixed on the clamp frame 8, the inner wall of the power cylinder 40 is rotatably connected to a power shaft 41, the power shaft 41 is transmission-connected to the indexing seat 33 through a belt, a torsion spring 42 is fixedly provided at the rotation connection between the power shaft 41 and the power cylinder 40, a pneumatic blade fitting with the power cylinder 40 is installed on the power shaft 41, the power cylinder 40 is connected to a third corrugated coupling pipe, each third corrugated coupling pipe is installed with a second solenoid valve, and the third corrugated coupling pipe is connected to the second hose 30.

[0076] By setting a plurality of second solenoid valves, the angle of the indexing seat 33 at the side frame 4 and the angle of the indexing seat 33 on the point clamping table 6 can be independently adjusted;

[0077] Then quickly adjust the fixing mode of the device to the elevator sheet metal parts;

[0078] A fixing method for an elevator sheet metal welding fixture comprises the following steps:

[0079] SS01, layout, before the elevator sheet metal is welded and fixed, the two mechanical arm assemblies drive the two fixing parts to be laid out at a set angle. After the angle of the fixing parts is adjusted, the spacing between the inner frame 3 and the side frame 4 in the two fixing parts is adjusted according to the area of ​​the elevator sheet metal to be fixed;

[0080] SS02. Fixing. Before fixing, according to the material and shape of the elevator sheet metal to be welded, the indexing seat 33 in the multiple point clamping components is rotated to a set angle, and the two sets of adjustment push rods 7 are expanded to a set stroke, and then the elevator sheet metal is welded.

[0081] The working principle of the present invention is: before welding, the electric walking wheel 10 is set to change the layout position of the mechanical arm assembly on the support frame 1 and the relative distance between the two mechanical arm assemblies, so that the device can perform welding and fixing operations on elevator panels of different specifications or shapes, and the electric rotator 11, the first mechanical arm 13, the second mechanical arm 14, the third mechanical arm 15 and the rotating shaft 2 are set to adjust the spatial layout position and spatial layout angle of the fixing component in multiple directions, and the spatial layout position and spatial layout angle of the two fixing components and the two mechanical arm assemblies can be adjusted independently, so that the fixing device can realize relative multi-angle, multi-space and multi-position fixation of two sheet metal parts before welding, thereby effectively improving the applicable scenarios of the fixing device and making the device The device is suitable for a variety of welding modes. When fixing sheet metal parts, when it is necessary to achieve magnetic fixation of sheet metal parts, the electromagnet 34 is facing the sheet metal parts to be fixed and magnetically fixes the sheet metal parts. When it is necessary to achieve vacuum adsorption fixation of sheet metal parts, the vacuum suction feet 37 are facing the sheet metal parts to be fixed and vacuum adsorption fixes the sheet metal parts. When it is necessary to achieve contour clamping and fixation of irregular elevator sheet metal parts, the contour clamp bags 36 on the two side frames 4 work and contour fix the irregular elevator sheet metal parts. When it is necessary to achieve hard clamping and fixation of elevator sheet metal parts, the clamping plates 35 work. Through the setting of multiple point clamping components, when the elevator sheet metal parts are fixed, multi-point fixation and multi-point limiting of the elevator sheet metal parts can be achieved, thereby effectively improving the fixing strength and stability of the fixing device for the sheet metal parts to be welded.

[0082] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations may be made to the embodiments without departing from the principles and spirit thereof, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An elevator sheet metal welding and fixing device, comprising a support frame (1), characterized in that: Also includes: Two rotating shafts (2), each of the two rotating shafts (2) being provided with a fixing component, the fixing component comprising an inner frame (3) and side frames (4) arranged on both sides of the inner frame (3), and a scissor-type telescopic module (5) being provided between the inner frame (3) and the side frames (4); Two hanging clamp components installed in the middle of the support frame (1); A transmission module is installed on the inner frame (3) and drives the two scissor-type telescopic modules (5) to telescope synchronously; A group of point clamping components installed on the scissor-type telescopic module (5), each of the point clamping components being installed with a point clamping platform (6); Two groups of adjusting push rods (7), the two groups of adjusting push rods (7) are respectively fixedly connected to the two inner frames (3), and a clamping frame (8) is installed on the movable end of each group of adjusting push rods (7) and each point clamping platform (6), and a clamping module is installed in the clamping frame (8); The guiding component is mounted on the inner frame (3) and connected to the clamping module.

2. The elevator sheet metal welding and fixing device according to claim 1, characterized in that: The invention also comprises a mechanical arm assembly connected to the two rotating shafts (2) respectively, the mechanical arm assembly comprising a walking platform (9), four electric walking wheels (10) connected to the support frame (1) are installed on the walking platform (9), an electric rotator (11) is installed on the bottom surface of the walking platform (9), a rotating platform (12) is installed on the rotating surface of the electric rotator (11), a first mechanical arm (13) is hinged on the rotating platform (12), and a second mechanical arm (13) is hinged on the front end of the first mechanical arm (13). A third mechanical arm (15) is hingedly connected to the front end of the second mechanical arm (14); a group of arm adjustment push rods (16) are hingedly connected between the first mechanical arm (13) and the rotary table (12), between the second mechanical arm (14) and the first mechanical arm (13), and between the third mechanical arm (15) and the second mechanical arm (14); a rotating motor (17) is installed on the third mechanical arm (15); and the output shaft end of the rotating motor (17) is fixedly connected to the rotating shaft (2).

3. The elevator sheet metal welding and fixing device according to claim 1, characterized in that: The hanging clamp component comprises a roller (19) which is rotatably connected to the inner wall of the support frame (1) and driven by a first motor (18); a hanging cable (20) is wound on the roller (19); and a hanging hook is installed at the bottom end of the hanging cable (20).

4. The elevator sheet metal welding and fixing device according to claim 1, characterized in that: The scissor-type telescopic module (5) comprises a group of "X"-shaped frames distributed in a linear array and hinged in pairs in sequence, and two symmetrically arranged rotating sleeves (21) are arranged at the hinges of the two "X"-shaped frames, and the rotating sleeves (21) are hollow tubular structures with openings at both ends, and the inner frame (3) and the side frame (4) are fixedly installed with fixed hinge seats, and the inner walls of the inner frame (3) and the side frame (4) are slidably connected with movable hinge seats, and the fixed hinge seats and the movable hinge seats are hinged to the "X"-shaped frames at adjacent positions.

5. The elevator sheet metal welding and fixing device according to claim 4, characterized in that: The transmission module comprises a second motor (22) mounted on the inner frame (3) and two transmission screws (23) rotatably connected to the inner frame (3); a driving gear is mounted on the output shaft end of the second motor (22); a driven gear connected to the driving gear is fixedly mounted on the bottom ends of the two transmission screws (23); and the two transmission screws (23) are respectively connected to the two movable hinge seats on the inner frame (3) in a transmission manner.

6. The elevator sheet metal welding and fixing device according to claim 5, characterized in that: The point clamping assembly includes a slide groove (24) opened on the back of the point clamping platform (6), the inner wall of the slide groove (24) is slidably connected with a driven slider (25), and the backs of the driven slider (25) and the point clamping platform (6) are both installed with elastic pressure members (26), and the two elastic pressure members (26) are rotatably connected to the rotating sleeve (21) at the corresponding position.

7. The elevator sheet metal welding and fixing device according to claim 6, characterized in that: The guiding components respectively include an air pump (27), a vacuum pump (28), a first hose (29), a second hose (30) and a vacuum hose (31) installed on the back of the inner frame (3); the port of the air pump (27) is connected to the first hose (29) and the second hose (30) respectively; the first hose (29) and the second hose (30) are both installed with an air pressure probe (32) and a first solenoid valve; the port of the vacuum pump (28) is connected to the vacuum hose (31); the first hose (29), the second hose (30) and the vacuum hose (31) are all connected to the clamping module.

8. The elevator sheet metal welding and fixing device according to claim 7, characterized in that: The clamping module comprises an indexing seat (33) rotatably connected to the inner wall of the clamping frame (8); an electromagnet (34), a clamping plate (35), a contoured clamping capsule (36) and a group of vacuum suction feet (37) are respectively installed on the indexing seat (33); an air guide cavity (38) and a vacuum cavity (39) are respectively opened inside the indexing seat (33); the inner cavity of the contoured clamping capsule (36) is connected to the air guide cavity (38); each of the vacuum suction feet (37) is connected to the vacuum cavity (39); the air guide cavity (38) is connected to the first hose (29) through a first corrugated connecting pipe; the vacuum cavity (39) is connected to the vacuum hose (31) through a second corrugated connecting pipe; and a guiding module linked to the indexing seat (33) is installed on the clamping frame (8).

9. The elevator sheet metal welding and fixing device according to claim 8, characterized in that: The guide module comprises a power cylinder (40) fixed on a clamp frame (8), the inner wall of the power cylinder (40) is rotatably connected to a power shaft (41), the power shaft (41) is transmission-connected to a transfer seat (33) via a belt, a torsion spring (42) is fixedly provided at the rotation connection between the power shaft (41) and the power cylinder (40), a pneumatic blade fitted to the power cylinder (40) is installed on the power shaft (41), the power cylinder (40) is connected to a third corrugated coupling pipe, each third corrugated coupling pipe is installed with a second solenoid valve, and the third corrugated coupling pipe is connected to the second hose (30).

10. A fixing method for an elevator sheet metal welding fixing device as claimed in claim 9, characterized in that: The following steps are involved: SS01, layout, before the elevator sheet metal is welded and fixed, two mechanical arm assemblies drive two fixing parts to be laid out at a set angle. After the angle of the fixing parts is adjusted, the spacing between the inner frame (3) and the side frame (4) in the two fixing parts is adjusted according to the area of ​​the elevator sheet metal to be fixed; SS02, fixation. Before fixation, according to the material and shape of the elevator sheet metal parts to be welded, the indexing seats (33) in the multiple point clamping assemblies are rotated to a set angle, and the two sets of adjustment push rods (7) are unfolded with a set stroke, and then the elevator sheet metal parts are welded.

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