Automatic welding device and forming process for elevator car frame

Abstract

The invention discloses an automatic welding device for an elevator car frame and a forming process. The automatic welding device comprises a lifting type welding positioner, a welding mechanism, an abutting plate, a threaded rod, a connecting rod, a meshing wheel, a matching wheel, a movable plate, a rotating cylinder, an abutting plate and an abutting column. When the abutting column moves upwards, the fixing state of the matching plate is relieved, position adjustment and angle adjustment of the welding mechanism are independently conducted, and when the abutting column moves downwards, the welding mechanism with the position and angle adjusted is synchronously fixed; according to the automatic welding device, a unique lifting type welding positioner and a movable seat structure are designed, independent adjustment of the position and the angle of a welding mechanism is achieved through a transmission mechanism of a threaded rod, a meshing wheel and a matching wheel, and flexible adjustment is achieved in the mode so that the automatic welding device can adapt to the welding task of elevator car frames of different shapes and sizes; and after the position and the angle of the welding mechanism are adjusted, the pressing plate is moved downwards to enable the pressing column to synchronously fix the welding mechanism, so that the stability of the welding mechanism in the welding process is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of elevator welding positioning structure, in particular to an automatic welding device and forming process for an elevator car frame. BACKGROUND

[0002] In the elevator manufacturing industry, the welding quality of the elevator car frame directly relates to the safety, stability and service life of the elevator as a whole. The traditional welding of the elevator car frame mainly relies on manual operation, which not only has high labor intensity and low production efficiency, but also is greatly affected by the skill level and fatigue degree of the operator, making it difficult to guarantee the consistency and stability of the welding. In addition, manual welding also has safety hazards, such as sparks and high temperatures generated during welding, which may cause harm to the operator.

[0003] With the development of automation technology, automatic welding equipment has been widely used in manufacturing industry. However, the existing automatic welding device often has problems in adjusting the welding position and angle when dealing with complex structures such as elevator car frames, making it difficult to meet the high-precision and high-efficiency welding requirements.

[0004] Therefore, we propose an automatic welding device and forming process for an elevator car frame. SUMMARY

[0005] The purpose of the present application is to provide an automatic welding device for an elevator car frame to solve the problems raised in the background art.

[0006] To achieve the above purpose, the present application provides an automatic welding device for an elevator car frame, which comprises a lifting type welding positioner, a fixed seat is fixedly connected to the lifting plate of the lifting type welding positioner, an active seat is rotatably connected to the fixed seat through a rotating shaft, and a welding mechanism is arranged on the active seat.

[0007] It also includes a vertical plate that presses against both sides of the elevator car frame, the plate is fixedly connected to the fixed seat, a threaded rod is rotatably connected in the active seat, a connecting rod is fixedly connected to the end of the threaded rod, a meshing wheel is fixedly connected to the end of the connecting rod, and a matching wheel that meshes with the meshing wheel is rotatably connected in the active seat.

[0008] A movable plate is rotatably connected in the middle of the plate, a rotating cylinder that is rotatably connected to the movable plate is fixedly connected to the other end of the movable plate, a slot is formed in the rotating cylinder, a pressing plate that moves along the slot is arranged below the movable plate, the pressing plate is pressed and matched with the active seat and the fixed seat, and a pressing column that is in contact with the matching wheel is hingedly connected to the end of the pressing plate.

[0009] When the pressing column moves up, the fixing state of the cooperation plate is released, so that the position adjustment and the angle adjustment of the welding mechanism are independently carried out, and when the pressing column moves down, the welding mechanism after the position adjustment and the angle adjustment is synchronously fixed.

[0010] Preferably, the cooperation wheel is fixedly connected with a rotating cylinder, and the rotating shaft is located on the same vertical axis as the rotating cylinder and the rotating barrel.

[0011] Preferably, the movable plate is hingedly connected with the pressing plate, and an inclined compression spring is arranged between the movable plate and the pressing plate.

[0012] Preferably, the end of the movable plate is inclined, the top surface of the fixed seat is higher than the top surface of the movable plate, and the end of the movable plate is pressed against the arc-shaped edge of the fixed seat.

[0013] Preferably, the L-shaped plate is movably inserted into the control plate, two insertion grooves are formed in the movable plate and are inserted into the ends of the L-shaped plate, and the depth of the insertion groove away from the sliding groove is greater than the depth of the insertion groove close to the sliding groove.

[0014] Preferably, the top of the movable seat is fixedly connected with a limiting ring, and the rotating barrel is rotatably connected with the limiting ring.

[0015] Preferably, the pressing column is in the shape of an inverted circular truncated cone, the bottom of the pressing column is fixedly connected with a rubber extrusion layer, the contact surfaces of the rubber extrusion layer and the rotating cylinder are friction surfaces, and the top of the pressing column is fixedly connected with a correcting block that is pressed against the inner wall of the rotating barrel.

[0016] Preferably, the movable seat is provided with a movable groove, a connecting seat that is installed and connected with the welding mechanism is movably arranged in the movable groove, a threaded sleeve is fixedly connected to the bottom of the connecting seat, the threaded sleeve is threadedly connected with a threaded rod, and the threaded sleeve is inserted into the movable seat.

[0017] Preferably, the end of the pressing plate is provided with an elastic protrusion, and the protrusion is pressed against the pressing column.

[0018] A forming process of an elevator car frame, the specific process comprising the following steps:

[0019] S1, material selection: selecting stainless steel or aluminum alloy plate;

[0020] S2, shearing machine cutting: according to the design requirements, the selected stainless steel or aluminum alloy plate is cut into the required size and shape;

[0021] S3, punching: punching the required holes on the cut stainless steel or aluminum alloy plate using a punch or a laser device for subsequent assembly and connection;

[0022] S4, bending forming: the stainless steel or aluminum alloy plate is bent into a C-shaped or U-shaped structure under the pressure of a bending punch or a bending die through a bending equipment;

[0023] S5, installation: the installed stainless steel or aluminum alloy plate is welded and reinforced by an automatic welding device.

[0024] Compared with the prior art, the present application has the following advantages:

[0025] The automatic welding device of the present application is designed with a unique lifting type welding positioner and a movable seat structure. Through the transmission mechanism of the threaded rod, the engaging wheel and the cooperating wheel, the position and angle of the welding mechanism are independently adjusted. This design enables the welding mechanism to be flexibly adjusted according to actual needs to adapt to the welding tasks of elevator car frames of different shapes and sizes.

[0026] After adjusting the position and angle of the welding mechanism, the welding mechanism is fixed by the downwardly moving abutting plate and the abutting column to ensure the stability of the welding mechanism during welding. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 is a schematic view of the overall structure of the present application cooperating with the elevator car frame;

[0028] Figure 2 is a schematic view of the overall structure of the present application;

[0029] Figure 3 is a schematic view of the split structure of the lifting type welding positioner and the fixed seat of the present application;

[0030] Figure 4 is a schematic view of the split structure of the connecting seat and the welding mechanism of the present application;

[0031] Figure 5 is a schematic view of the cooperation structure of the fixed seat and the movable seat and the abutting plate of the present application;

[0032] Figure 6 is a schematic view of the split structure of the fixed seat and the movable seat of the present application;

[0033] Figure 7 is a schematic view of the cross-sectional structure of the fixed seat and the movable seat of the present application;

[0034] Figure 8 is a schematic view of the overall structure of the present application Figure 7 is a schematic view of the front view of the structure of the present application;

[0035] Figure 9 is a schematic view of the split structure of the fixed seat and the movable seat of the present application;

[0036] Figure 10 It is the split schematic view of the rotating drum, threaded rod structure and movable seat of the application;

[0037] Figure 11 It is the split structure schematic view of the threaded rod and connecting rod of the application;

[0038] Figure 12 It is the sectional structure schematic view of the movable plate of the application;

[0039] Figure 13 It is the split structure schematic view of the movable plate and rotating drum of the application;

[0040] Figure 14 It is the sectional structure schematic view of the rotating drum of the application;

[0041] Figure 15 It is the split structure schematic view of the rotating drum and pressing column of the application;

[0042] Figure 16 It is the sectional structure schematic view of the pressing column of the application.

[0043] In the figure: 1, lifting type welding positioner; 2, fixed seat; 3, rotating shaft; 4, movable seat; 5, welding mechanism; 6, pressing plate; 7, threaded rod; 8, connecting rod; 9, meshing wheel; 10, matching wheel; 11, movable plate; 12, rotating drum; 13, missing slot; 14, pressing plate; 15, pressing column; 16, rotating drum; 17, compression spring; 18, sliding groove; 19, control plate; 20, L-shaped plate; 21, plug-in slot; 22, limiting missing ring; 23, rubber extrusion layer; 24, correction block; 25, movable groove; 26, connecting seat; 27, threaded sleeve; 28, elastic protrusion; 29, avoiding groove. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0045] Please refer to Figures 1-16 The application provides an automatic welding device for an elevator car frame, which comprises a lifting type welding positioner 1, a fixed seat 2 is fixedly connected to the lifting plate of the lifting type welding positioner 1, a movable seat 4 is rotationally connected to the fixed seat 2 through a rotating shaft 3, and a welding mechanism 5 is arranged on the movable seat 4.

[0046] Further comprising a vertical shape and press against the two sides of the elevator car frame with the stop plate 6, the stop plate 6 is connected with the fixed seat 2, the movable seat 4 is rotatably connected with a threaded rod 7, the threaded rod 7 is fixedly connected with a connecting rod 8 at the end, the connecting rod 8 is fixedly connected with the meshing wheel 9 at the end, the movable seat 4 is rotatably connected with the matching wheel 10 engaged with the meshing wheel 9, wherein the meshing wheel 9 and the matching wheel 10 are preferably bevel gears;

[0047] First, the mobile lifting type welding positioner 1 is moved, and the two ends of the stop plate 6 are pressed against the two sides of the elevator car frame, wherein the side surface of the stop plate 6 close to the elevator car frame is provided with a avoiding slot 29, so that the welding slag generated by the welding mechanism 5 falls from the avoiding slot 29, avoiding the accumulation of welding slag on the stop plate 6;

[0048] Then, the fixed seat 2, the movable seat 4 and the welding mechanism 5 are vertically moved to the top of the elevator car frame by the lifting type welding positioner 1;

[0049] Finally, the position and angle of the welding mechanism 5 are adjusted according to the actual situation (the adjustment personnel can adjust through the ladder).

[0050] In this application, the position and angle of the welding mechanism 5 can be adjusted by moving the pressing plate 14 upward, and the specific adjustment method is as follows:

[0051] Adjustment of the position of the welding mechanism 5:

[0052] The middle part of the stop plate 6 is rotatably connected with the movable plate 11, the other end of the movable plate 11 is fixedly connected with the rotating cylinder 12 rotatably connected with the movable plate 11, the rotating cylinder 12 is provided with a slot 13, the movable plate 11 is provided with a pressing plate 14 movable along the slot 13, the pressing plate 14 is simultaneously pressed and matched with the movable seat 4 and the fixed seat 2, the end of the pressing plate 14 is hinged with a pressing column 15 in contact with the matching wheel 10, when the pressing column 15 moves upward, the fixed state of the matching plate is released, so that the position adjustment and the angle adjustment of the welding mechanism 5 are independent, when the pressing column 15 moves downward, the welding mechanism 5 after position adjustment and angle adjustment is fixed synchronously;

[0053] The middle shaft of the matching wheel 10 is fixedly connected with the rotating cylinder 16, the rotating shaft 3 is located on the same vertical axis with the rotating cylinder 16 and the rotating cylinder 12;

[0054] The pressing plate 14 moves upward along the movable plate 11, the pressing plate 14 moves away from the movable seat 4 and the fixed seat 2, so as to release the simultaneous restriction of the pressing plate 14 on the movable seat 4 and the fixed seat 2, and the upward movement of the pressing plate 14 along the slot 13 drives the pressing column 15 to move upward, so that the pressing column 15 moves away from the rotating cylinder 16, the restriction on the rotating cylinder 16 is released, and the rotating cylinder 16 can rotate at the original position in the movable seat 4;

[0055] When the movable seat 4 rotates along the rotating shaft 3 on the fixed seat 2, the movable engaging wheel 10 is in contact with the engaging wheel 9, but does not drive the engaging wheel 9 to rotate at this time. At this time, the engaging wheel 9 moves in a circle or is not active under the action of the threaded rod 7, and is irrelevant to the engaging wheel 10. The engaging wheel 10 moves adaptively to avoid affecting the engaging wheel 9. At this time, the angle between the movable seat 4 and the fixed seat 2 can be adjusted at will, and the running state of the threaded rod 7 does not affect the adjustment of the position of the welding mechanism 5.

[0056] It is worth noting that: while adjusting the position of the welding mechanism 5, the angle of the welding mechanism 5 can also be adjusted. Position adjustment and angle adjustment are independent and do not interfere with each other:

[0057] The movable seat 4 is provided with a movable groove 25, and a connecting seat 26 connected with the welding mechanism 5 is movably arranged in the movable groove 25. The bottom of the connecting seat 26 is fixedly connected with a threaded sleeve 27, the threaded sleeve 27 is threadedly connected with the threaded rod 7, and the threaded sleeve 27 is insertedly connected with the movable seat 4.

[0058] Since the engaging wheel 10 can freely rotate, when the angle of the welding mechanism 5 needs to be adjusted, the threaded rod 7 is rotated (the threaded rod 7 has self-locking ability and does not actively rotate, so it will not rotate back). The threaded sleeve is always inserted into the connecting seat 26 and cannot be separated from the connecting seat 26. The outer surface of the threaded sleeve is in a rectangular structure, so the threaded sleeve cannot rotate relative to the connecting seat 26. The threaded rod 7 rotates relative to the original position of the movable seat 4, thereby driving the threaded sleeve, the connecting seat 26 and the welding mechanism 5 to move along the movable groove 25, thereby adjusting the position of the welding mechanism 5.

[0059] The threaded rod 7 rotates relative to the original position, thereby driving the L-shaped connecting rod 8 to rotate, thereby driving the engaging wheel 9 to move in a circle, and the engaging wheel 10 rotates adaptively. The movement of the engaging wheel 9 is not affected by the engaging wheel 10.

[0060] The position and angle of the welding mechanism 5 cannot be adjusted when the abutting plate 14 moves downward, and the position and angle of the welding mechanism 5 are matched with each other to form a stable connection. The stability of the position of the welding mechanism 5 and the stability of the angle of the welding mechanism 5 affect each other.

[0061] When the abutting plate 14 moves downward, on the one hand, the bottom surface of the abutting plate 14 abuts against the movable seat 4, and the end of the abutting plate 14 abuts against the fixed seat 2, thereby stabilizing the movable seat 4 and the fixed seat 2 and preventing them from rotating relative to each other, thereby ensuring the stability of the welding mechanism 5 after the position adjustment.

[0062] When the pressing plate 14 moves downward, the pressing column 15 presses the rotating cylinder 16, so that the rotating cylinder 16 and the engaging wheel 10 cannot rotate, the engaging wheel 10 cannot rotate relative to the movable seat 4, and the threaded rod 7 cannot rotate at this time, because the engaging wheel 10 limits the meshing wheel 9, so that the meshing wheel 9 cannot rotate in the movable seat 4 (a rotating groove is formed in the movable seat 4, so as to facilitate the circular motion of the meshing wheel 9), thereby ensuring the stability of the angle adjustment of the welding structure.

[0063] The specific mode of the up-and-down movement of the pressing plate 14 is as follows:

[0064] The pressing spring 17 in inclined distribution is hung between the movable plate 11 and the pressing plate 14, the sliding groove 18 is formed in the movable plate 11, the control plate 19 fixedly connected with the pressing plate 14 is slidably matched in the sliding groove 18, and the length of the sliding groove 18 is greater than the horizontal length of the control plate 19;

[0065] The L-shaped plate 20 is movably inserted in the control plate 19, two insertion grooves 21 matched with the end of the L-shaped plate 20 are formed in the movable plate 11, and the depth of the insertion groove 21 away from the sliding groove 18 is greater than the depth of the insertion groove 21 close to the sliding groove 18;

[0066] By moving the control plate 19 upward, the pressing spring 17 is pressed, the control plate 19 drives the pressing plate 14 to move upward and close to the movable plate 11, so that the pressing plate 14 is away from the movable seat 4 and the fixed seat 2, and the pressing column 15 moves upward and away from the rotating cylinder 16, then the L-shaped plate 20 is moved, and the end of the L-shaped plate 20 is inserted into one of the insertion grooves 21 with shallow depth, so that the upwardly moved pressing plate 14 is stably kept in position;

[0067] By moving the control plate 19 downward, the pressing plate 14 is pressed downward to press the movable seat 4 and the fixed seat 2, and the pressing column 15 moves downward to contact the rotating cylinder 16, then the L-shaped plate 20 is moved, and the L-shaped plate 20 is inserted into the other insertion groove 21 with deep depth, so that the downwardly pressed pressing plate 14 is stably kept in position.

[0068] It is worth noting that: the end of the movable plate 11 is inclined at an angle, the top surface of the fixed seat 2 is higher than the top surface of the movable plate 11, the end of the movable plate 11 is pressed against the arc-shaped edge of the fixed seat 2, when the pressing plate 14 moves downward, the inclined end of the pressing plate 14 is pressed against the fixed seat 2, the pressing plate 14 moves a small distance relative to the movable plate 11, and the horizontal and vertical movement of the pressing plate 14 drives the pressing column 15 to move downward along the rotating cylinder 12 and close to the inner wall of the rotating cylinder 12.

[0069] The movable seat 4 is fixedly connected with a limiting ring 22 at the top, and the rotating drum 12 is rotatably connected with the limiting ring 22, so as to ensure the rotatable connection between the movable seat 4 and the rotating drum 12.

[0070] The pressing column 15 is in an inverted circular table structure, and a rubber extrusion layer 23 is fixedly connected to the bottom of the pressing column 15. The contact surfaces of the rubber extrusion layer 23 and the rotating drum 16 are friction surfaces. A correcting block 24 is fixedly connected to the top of the pressing column 15 and abuts against the inner wall of the rotating drum 12.

[0071] When the pressing column 15 moves downward along the rotating drum 12 and approaches the inner wall of the rotating drum 12 in the horizontal direction, the correcting block 24 approaches the inner wall of the rotating drum 12 and abuts against the inner wall of the rotating drum 12. Under the reaction of the inner wall of the rotating drum 12, the correcting block 24 and the pressing column 15 are vertically distributed, and the pressing column 15 is located at the center of the rotating drum 12. At this time, the rubber extrusion layer 23 at the bottom of the pressing column 15 abuts against the rotating drum 16 tightly, thereby fixing the rotating drum 16 and the cooperating wheel 10.

[0072] The end of the pressing plate 14 is provided with an elastic protrusion 28, which abuts against the pressing column 15. When the pressing plate 14 rises, the elastic protrusion 28 facilitates the inclination of the pressing column 15 and the distancing of the pressing column 15 from the rotating drum 16.

[0073] The outer surface of the rotating drum 16 can be provided with multiple groups of anti-skid columns arranged uniformly (the lengths of the anti-skid columns are different), so as to facilitate the action of the downward rubber extrusion layer 23 on the rotating drum 16, stabilize the rotating drum 16, and prevent the rotating drum 16 from rotating.

[0074] In the present application, the outer surface of the rotating drum 16 can also be provided with multiple inclined surfaces arranged in a fish scale type, so as to facilitate the abutment of the downward rubber extrusion layer 23 against the inclined surfaces on the rotating drum 16, thereby further stabilizing the rotating drum 16 and preventing the rotating drum 16 from rotating.

[0075] A forming process of an elevator car frame, the specific process comprising the following steps:

[0076] S1, material selection: selecting stainless steel or aluminum alloy sheet;

[0077] S2, shearing machine cutting: according to the design requirements, the selected stainless steel or aluminum alloy sheet is cut into the required size and shape;

[0078] S3, punching: using a punch or a laser device to punch the required holes in the cut stainless steel or aluminum alloy sheet, so as to facilitate subsequent assembly and connection;

[0079] S4, bending forming: the stainless steel or aluminum alloy plate is bent into C or U structure under the pressure of the bending punch or die through the bending equipment;

[0080] S5, installation: the installed stainless steel or aluminum alloy plate is welded and reinforced by the automatic welding device.

[0081] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0082] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions, and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for an elevator car frame, comprising: A lifting welding positioner (1) is provided with a fixed seat (2) fixedly connected to the lifting plate of the lifting welding positioner (1), and a movable seat (4) is rotatably connected to the fixed seat (2) via a rotating shaft (3), and a welding mechanism (5) is provided on the movable seat (4). The feature is that it further includes: a vertically shaped abutment plate (6) that abuts against both sides of the elevator car frame, the abutment plate (6) being connected and fixed to the fixed seat (2), a threaded rod (7) being rotatably connected inside the movable seat (4), a connecting rod (8) being fixedly connected to the end of the threaded rod (7), a meshing wheel (9) being fixedly connected to the end of the connecting rod (8), and a mating wheel (10) that meshes with the meshing wheel (9) being rotatably connected inside the movable seat (4); The middle part of the abutment plate (6) is rotatably connected to a movable plate (11), and the other end of the movable plate (11) is fixedly connected to a rotating cylinder (12) rotatably connected to the movable plate (11). The rotating cylinder (12) has a notch (13), and the lower part of the movable plate (11) is provided with an abutment plate (14) that moves along the notch (13). The abutment plate (14) is in abutment cooperation with both the movable seat (4) and the fixed seat (2). The end of the abutment plate (14) is hinged to an abutment column (15) that abuts against the mating wheel (10). When the pressure column (15) moves upward, the fixed state of the mating plate is released, so that the position adjustment and angle adjustment of the welding mechanism (5) can be carried out independently. When the pressure column (15) moves downward, the welding mechanism (5) after the position and angle are adjusted is simultaneously fixed.

2. The automatic welding device for the elevator car frame according to claim 1, characterized in that: The rotating cylinder (16) is fixedly connected to the central shaft of the mating wheel (10), and the rotating shaft (3), the rotating cylinder (16), and the rotating cylinder (12) are located on the same vertical axis.

3. The automatic welding device for the elevator car frame according to claim 2, characterized in that: An inclined compression spring (17) is attached between the movable plate (11) and the pressure plate (14). A sliding groove (18) is provided on the movable plate (11). A control plate (19) connected and fixed to the pressure plate (14) is slidably fitted in the sliding groove (18). The length of the sliding groove (18) is greater than the horizontal length of the control plate (19).

4. The automatic welding device for the elevator car frame according to claim 3, characterized in that: The end of the movable plate (11) is inclined, the top surface of the fixed seat (2) is higher than the top surface of the movable plate (11), and the end of the movable plate (11) presses against the arc-shaped edge of the fixed seat (2).

5. The automatic welding device for the elevator car frame according to claim 4, characterized in that: An L-shaped plate (20) is movably inserted into the control panel (19). Two insertion slots (21) are provided on the movable plate (11) to engage with the ends of the L-shaped plate (20). The depth of the insertion slot (21) located away from the slide groove (18) is greater than the depth of the insertion slot (21) located near the slide groove (18).

6. The automatic welding device for the elevator car frame according to claim 5, characterized in that: The top of the movable seat (4) is fixedly connected to a limiting ring (22), and the rotating cylinder (12) is rotatably connected to the limiting ring (22).

7. The automatic welding device for the elevator car frame according to claim 6, characterized in that: The pressure column (15) has an inverted frustum structure. A rubber extrusion layer (23) is fixedly connected to the bottom of the pressure column (15). The contact surfaces of the rubber extrusion layer (23) and the rotating cylinder (16) are friction surfaces. A correction block (24) that presses against the inner wall of the rotating cylinder (12) is fixedly connected to the top of the pressure column (15).

8. The automatic welding device for the elevator car frame according to claim 7, characterized in that: The movable seat (4) is provided with a movable groove (25), and a connecting seat (26) that is installed and connected to the welding mechanism (5) is movable in the movable groove (25). A threaded sleeve (27) is fixedly connected to the bottom of the connecting seat (26). The threaded sleeve (27) is threadedly connected to the threaded rod (7), and the threaded sleeve (27) is inserted and movable into the movable seat (4).

9. The automatic welding device for the elevator car frame according to claim 8, characterized in that: The end of the pressure plate (14) is provided with an elastic protrusion (28), which is in a pressure-fitting relationship with the pressure column (15).

10. A molding process for an elevator car frame, characterized in that, The specific process includes the following steps; S1. Material selection: Stainless steel or aluminum alloy sheet is selected; S2. Shearing: Cut the selected stainless steel or aluminum alloy sheet into the required size and shape according to the design requirements; S3. Punching: Punch the required holes in the cut stainless steel or aluminum alloy sheet using a punch press or laser equipment for subsequent assembly and connection. S4. Bending and forming: Some stainless steel or aluminum alloy sheets are bent into C-shaped or U-shaped structures by bending equipment under the pressure of bending punch or die. S5. Installation: The stainless steel or aluminum alloy plates to be installed are reinforced by welding using an automatic welding device.

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