Door body welding tool

Abstract

The invention discloses a door body welding tool, and belongs to the technical field of laser welding. A door body welding tool comprises a base and a door frame fixedly placed on the surface of the base, a plurality of hinge plates to be welded are placed on the surface of the door frame, a plurality of fixing frames corresponding to the hinge plates in position are fixedly installed on the surface of the base, sliding seats matched with the fixing frames are slidably connected into the fixing frames, and sliding frames are fixedly installed on the surfaces of the sliding seats. A first spring is elastically connected between the sliding base and the fixing frame, and two sliding blocks are correspondingly connected into the sliding frame in a sliding mode. Compared with traditional welding equipment, the door body welding tool has the advantages that the welding distance between the laser welding head and the hinge plate can be automatically adjusted according to the hinge plates with different thicknesses, then the adaptive welding distance between the laser welding head and the hinge plate is guaranteed, the problem that the thick hinge plate is not firmly welded is solved, and the welding efficiency is improved. And meanwhile, the problem of welding penetration of the thin hinge plate is solved, so that the welding quality of the hinge plate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser welding, more particularly to a door body welding tool. BACKGROUND

[0002] The door body welding tool is a tool for assisting door body welding operation, mainly to ensure accurate positioning and reliable clamping of the welding part, so as to improve welding quality and production efficiency.

[0003] Chinese patent application No. CN201910682119.4 discloses a welding tool for welding door body hinges, comprising a base, a main support seat is arranged on the base, transverse moving mechanisms are arranged on both sides of the main support seat, longitudinal moving mechanisms are arranged on each transverse moving mechanism, and welding torch mechanisms are correspondingly arranged on the longitudinal moving mechanisms; a welding torch reversing device is arranged below the welding torch mechanisms on the base, a door body hinge adjusting clamp is mounted on the welding torch reversing device, and a door body hinge is fixedly arranged on the door body hinge adjusting clamp; a translation mechanism is cooperatively arranged between the welding torch reversing device and the door body hinge adjusting clamp, the translation mechanism is parallel to the transverse moving mechanisms, and a door body hinge angle rotating device is also cooperatively arranged on the door body hinge adjusting clamp.

[0004] The above technical solution realizes automatic flip welding, which can improve the yield, reduce labor intensity, improve work efficiency and reduce labor cost. However, in the process of welding the hinge plate on the surface of the door frame by the traditional partial welding device, the hinge plate is first placed on the welding position of the door frame surface and fixed, and the hinge plate is welded on the surface of the door frame by the fixed laser welding head. However, the thickness specifications of the hinge plate are different in life, and only the fixed laser welding head is used for welding the hinge plate, so it is impossible to control the welding distance between the laser welding head and the hinge plate. When the hinge plate to be welded is thick, the hinge plate may not be welded firmly, and when the hinge plate to be welded is thin, the welding position may be penetrated, which cannot guarantee the welding quality of the hinge plate. SUMMARY

[0005] The present application aims to provide a door body welding tool to solve the problems raised in the background art.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions.

[0007] The utility model provides a door body welding frock, including base and fixedly placed door frame on its surface, the surface of door frame places a plurality of hinge plate to be welded, the surface of base fixedly installed a plurality of with hinge plate position corresponds fixed frame, the inside of fixed frame is slidably connected with the sliding seat matched with it, the surface of sliding seat is fixedly installed with the sliding frame, the inside of sliding seat and fixed frame is elastically connected with first spring, the inside of sliding frame is slidably connected with two sliding blocks correspondingly, the surface of two sliding blocks is fixedly installed with upper support plate and lower support plate respectively, the side surface of upper support plate and lower support plate is provided with arc guide plate, the inside top surface and the inside bottom surface of sliding frame are elastically connected with second spring between two sliding blocks respectively, the surface of sliding frame is fixedly installed with connecting rod, the surface of one end of connecting rod is fixedly installed with trapezoidal seat, the side surface of upper support plate is fixedly installed with slope frame, the side of one of fixed frame is provided with movable box, the surface of movable box is fixedly installed with Z type frame, one end of Z type frame is rotatably connected with the gyro wheel for extruding trapezoidal seat, the inside of movable box is slidably connected with the toothed plate and the rack respectively, the bottom of toothed plate is rotatably connected with the spinning wheel, the bottom of rack is fixedly installed with the laser welding head for welding hinge plate on the surface of door frame.

[0008] Preferably, the inner wall of the movable box is correspondingly fixedly installed with two first vertical frames and two second vertical frames, the inside of the first vertical frame is slidably connected with a movable block matched therewith, the inner side surface of the movable block is fixedly connected with the side surface of the toothed plate, the toothed plate is slidably connected with the first vertical frame through the movable block, the inside of the second vertical frame is slidably connected with a moving block matched therewith, the inner side surface of the moving block is fixedly connected with the side surface of the rack, the rack is slidably connected with the second vertical frame through the moving block.

[0009] Preferably, the first vertical frame and the movable block are elastically connected with a third spring, one end of the third spring is fixedly connected with the inside top surface of the first vertical frame, the other end of the third spring is fixedly connected with the surface of the movable block, the second vertical frame and the moving block are elastically connected with a fourth spring, one end of the fourth spring is fixedly connected with the inside bottom surface of the second vertical frame, the other end of the fourth spring is fixedly connected with the moving block.

[0010] Preferably, the inside of the movable box is rotatably connected with a gear, the gear is engaged with the toothed plate and the rack respectively, the corresponding surfaces of the gear are fixedly installed with shafts, the shafts are rotatably connected with the inner wall of the movable box.

[0011] Preferably, one end of the first spring is fixedly connected with the surface of the sliding seat, the other end of the first spring is fixedly connected with the fixed frame, one end of the second spring is fixedly connected with the sliding block, the other end of the second spring is fixedly connected with the sliding frame.

[0012] Preferably, each of the four corners of the base surface is fixedly equipped with a limiting seat for limiting the door frame. Multiple frame plates are fixedly installed on the surface of the base. A turntable is rotatably connected to the surface of any one of the frame plates. A vertical plate is fixedly connected to the surface of the turntable. A vertical groove is opened on the inner side of the vertical plate. A matching lifting block is slidably connected inside the vertical groove. A horizontal frame is fixedly connected to the surface of the lifting block. A corresponding sliding block is slidably connected inside the horizontal frame. A connecting frame for clamping and fixing the hinge plate is fixedly installed on the surface of each of the two sliding blocks. Rubber pads are provided on the inner side of the ends of each of the two connecting frames.

[0013] Preferably, a bidirectional lead screw is rotatably connected inside the crossbar, and the bidirectional lead screw is threadedly connected to two sliding blocks. One end of the bidirectional lead screw extends to the outside of the crossbar, and a knob is fixedly installed on the surface of one end of the bidirectional lead screw. An expansion joint is fixedly installed on the top surface inside the vertical groove, and the expansion end of the expansion joint is fixedly connected to the surface of the lifting block.

[0014] Preferably, the surface of the turntable is provided with four locking slots arranged in a circumferential array, and the surface of the frame plate is fixedly equipped with a locking rod for locking the locking slots.

[0015] Preferably, a slot is formed in the middle of the surface of the base, and a matching movable seat is slidably connected inside the slot. A threaded rod is rotatably connected inside the slot and threadedly connected to the movable seat. A drive motor is fixedly installed on one side surface of the base, and the output end of the drive motor is fixedly connected to the threaded rod.

[0016] Preferably, a support frame is fixedly installed on the surface of the movable seat, a slide rail frame is fixedly installed on the top surface of the support frame, a matching transverse block is slidably connected inside the slide rail frame, the inner side of the transverse block is fixedly connected to the surface of the movable box, a screw is rotatably connected inside the slide rail frame, the screw is threadedly connected to the transverse block, and a motor is fixedly installed on the side surface of the slide rail frame, the output end of the motor is fixedly connected to the screw.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1) When using this door welding fixture, the laser welding head can control the upward movement distance of the upper support plate according to the different thicknesses of the hinge plate, and thus control the upward movement distance of the ramp frame. By rotating the wheel and receiving ramp frames of different heights, the welding distance between the laser welding head and the hinge plate can be adjusted. Compared with traditional welding equipment, this welding fixture can automatically adjust the welding distance between the laser welding head and the hinge plate according to the different thicknesses of the hinge plate, thereby ensuring that the welding distance between the laser welding head and the hinge plate is appropriate. This solves the problem of weak welding of thicker hinge plates, and also solves the problem of welding penetration of thinner hinge plates, thereby improving the welding quality of the hinge plate.

[0019] 2) When using this door welding fixture, manually rotate the turntable. The turntable rotates, causing the vertical plate to rotate as well. This moves the connecting frame used to clamp and fix the hinge plate to the top of the door frame. Lock the turntable by inserting the locking rod into the lock groove. Then, place the hinge plate to be welded in the welding position. The telescopic device extends, moving the lifting block and the horizontal frame downwards. The downward movement of the horizontal frame moves the connecting frame downwards. When the bottom surface of the connecting frame contacts the door frame surface, the two connecting frames are located on both sides of the hinge plate. Then, manually rotate the knob. The knob rotates, causing the bidirectional lead screw to rotate. This causes the two sliding blocks to move towards each other, moving the two connecting frames towards each other to clamp and fix the hinge plate, ensuring the stability of the hinge plate during the welding process and further improving the welding quality of the hinge plate by the laser welding head.

[0020] 3) When using this door welding fixture, multiple hinge plates are clamped and fixed by setting multiple connecting frames at intervals. By setting multiple upper support plates, lower support plates and inclined frames corresponding to the positions of the hinge plates, and setting only one laser welding head with adjustable welding distance, multiple hinge plates can be welded sequentially, thereby improving the welding speed of multiple hinge plates. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the position and structure of the base and door frame of the present invention;

[0023] Figure 3 This is a schematic diagram of the position structure of the door frame and the limiting seat according to the present invention;

[0024] Figure 4 This is a schematic diagram of the position structure of the frame plate and turntable of the present invention;

[0025] Figure 5 This is a schematic diagram showing the position and structure of the connecting rod and trapezoidal seat of the present invention;

[0026] Figure 6 This is a schematic diagram of the sliding block and crossbeam separation structure of the present invention;

[0027] Figure 7 Separation structure schematic diagram of fixed frame and sliding seat of the present application;

[0028] Figure 8 Roller and trapezoidal seat position structure schematic diagram of the present application;

[0029] Figure 9 Upper support plate and slope frame position structure schematic diagram of the present application;

[0030] Figure 10 Z-type frame and roller position structure schematic diagram of the present application;

[0031] Figure 11 Rack and laser welding head position structure schematic diagram of the present application.

[0032] Explanation of figure marks: 1, base; 2, door frame; 3, hinge plate; 4, fixed frame; 5, sliding seat; 6, sliding frame; 7, first spring; 8, sliding block; 9, upper support plate; 10, lower support plate; 11, arc guide plate; 12, second spring; 13, connecting rod; 14, trapezoidal seat; 15, slope frame; 16, movable box; 17, Z-type frame; 18, roller; 19, toothed plate; 20, rotating wheel; 21, rack; 22, laser welding head; 23, first vertical frame; 24, second vertical frame; 25, movable block; 26, third spring; 27, moving block; 28, fourth spring; 29, gear; 30, rotating shaft; 31, limiting seat; 32, frame plate; 33, rotating table; 34, vertical plate; 35, vertical groove; 36, lifting block; 37, horizontal frame; 38, sliding block; 39, connecting frame; 40, rubber pad; 41, bidirectional screw rod; 42, knob; 43, telescopic device; 44, locking slot; 45, locking rod; 46, slot; 47, moving seat; 48, threaded rod; 49, driving motor; 50, support frame; 51, sliding rail frame; 52, horizontal moving block; 53, screw rod; 54, motor. DETAILED DESCRIPTION

[0033] Please refer to Figure 1 - Figure 11The utility model provides a door body welding frock, including base 1 and fixedly placed door frame 2 on its surface, door frame 2 is the door frame 2 of prior art, and the surface of door frame 2 places a plurality of hinge plate 3 to be welded, hinge plate 3 is the hinge plate 3 of prior art, and the surface of base 1 is fixedly installed with a plurality of fixed frame 4 with hinge plate 3 position correspondence, the inside sliding connection of fixed frame 4 has the sliding seat 5 matched therewith, and the surface of sliding seat 5 is fixedly installed with sliding frame 6, and the first spring 7 is elastically connected between sliding seat 5 and fixed frame 4, and the inside corresponding sliding connection of sliding frame 6 has two sliding blocks 8, and the surface of two sliding blocks 8 is fixedly installed with upper support plate 9 and lower support plate 10 respectively, and the welding process of laser welding head 22 to hinge plate 3 can be according to the different thickness of hinge plate 3, control the distance of the upward movement of upper support plate 9, and then control the distance of the upward movement of slope frame 15, and the side surface of upper support plate 9 and lower support plate 10 is provided with arc guide plate 11, and the inside top surface and the inside bottom surface of two sliding blocks 8 and sliding frame 6 are elastically connected with the second spring 12 respectively, and the surface of sliding frame 6 is fixedly installed with connecting rod 13, and the surface of one end of connecting rod 13 is fixedly installed with trapezoidal seat 14, and the length of trapezoidal seat 14 is much greater than the width of hinge plate 3, and the side surface of upper support plate 9 is fixedly installed with slope frame 15, and the side of one of fixed frame 4 is provided with movable box 16, and the surface of movable box 16 is fixedly installed with Z type frame 17, and one end of Z type frame 17 is rotatably connected with the roller 18 for extruding trapezoidal seat 14, and the design of roller 18 reduces the friction to trapezoidal seat 14, and the inside of movable box 16 is slidingly connected with gear plate 19 and rack 21 respectively, and the bottom of gear plate 19 is rotatably connected with rotating wheel 20, and the design of rotating wheel 20 reduces the friction to slope frame 15, and the bottom of rack 21 is fixedly installed with laser welding head 22 for welding hinge plate 3 on the surface of door frame 2, and laser welding head 22 is the laser welder of prior art.

[0034] The welding process of laser welding head 22 to hinge plate 3 can be according to the different thickness of hinge plate 3, control the distance of the upward movement of upper support plate 9, and then control the distance of the upward movement of slope frame 15, and through rotating wheel 20 to receive different height slope frame 15, and then adjust the welding distance of laser welding head 22 and hinge plate 3, compared with traditional welding equipment, the welding frock can automatically adjust the welding distance of laser welding head 22 and hinge plate 3 according to the hinge plate 3 of different thickness, and then guarantee the welding distance of laser welding head 22 and hinge plate 3, solve the problem that thicker hinge plate 3 is not firmly welded, and also solve the problem that thinner hinge plate 3 is welded through, and then improve the welding quality of hinge plate 3.

[0035] The inner wall of the activity box 16 is fixedly provided with two first vertical supports 23 and two second vertical supports 24, the inside of the first vertical support 23 is slidably connected with a movable block 25 matched with the first vertical support 23, the inner side surface of the movable block 25 is fixedly connected with the side surface of the toothed plate 19, the toothed plate 19 is slidably connected with the first vertical support 23 through the movable block 25, the inside of the second vertical support 24 is slidably connected with a moving block 27 matched with the second vertical support 24, the inner side surface of the moving block 27 is fixedly connected with the side surface of the gear rack 21, the gear rack 21 is slidably connected with the second vertical support 24 through the moving block 27, so as to ensure the stable movement of the gear rack 21 and the toothed plate 19.

[0036] The third spring 26 is elastically connected between the first vertical support 23 and the movable block 25, one end of the third spring 26 is fixedly connected with the inner top surface of the first vertical support 23, the other end of the third spring 26 is fixedly connected with the surface of the movable block 25, the fourth spring 28 is elastically connected between the second vertical support 24 and the moving block 27, one end of the fourth spring 28 is fixedly connected with the inner bottom surface of the second vertical support 24, the other end of the fourth spring 28 is fixedly connected with the moving block 27, the third spring 26 is used for the movement reset of the movable block 25, and the fourth spring 28 is used for the reset of the moving block 27.

[0037] The gear 29 is rotatably connected in the inside of the activity box 16, the gear 29 is respectively engaged with the toothed plate 19 and the gear rack 21, the corresponding surfaces of the gear 29 are fixedly provided with the rotating shaft 30, and the rotating shaft 30 is rotatably connected with the inner wall of the activity box 16.

[0038] One end of the first spring 7 is fixedly connected with the surface of the sliding seat 5, the other end of the first spring 7 is fixedly connected with the fixed frame 4, one end of the second spring 12 is fixedly connected with the sliding block 8, and the other end of the second spring 12 is fixedly connected with the sliding frame 6.

[0039] The base 1 has four corners fixedly mounted with limiting seats 31 for limiting the door frame 2. Multiple frame plates 32 are fixedly mounted on the surface of the base 1. A turntable 33 is rotatably connected to the surface of any frame plate 32. A vertical plate 34 is fixedly connected to the surface of the turntable 33. A vertical groove 35 is formed on the inner side of the vertical plate 34. A matching lifting block 36 is slidably connected inside the vertical groove 35. A horizontal frame 37 is fixedly connected to the surface of the lifting block 36. A corresponding sliding block 38 is slidably connected inside the horizontal frame 37. A connecting frame 39 for clamping and fixing the hinge plate 3 is fixedly mounted on the surface of each of the two sliding blocks 38. Rubber pads 40 are provided on the inner sides of the ends of both connecting frames 39. Manually rotating the turntable 33 causes the vertical plate 34 to rotate, thereby allowing the hinge plate 3 to be clamped and fixed. The connecting frame 39, which holds and fixes the hinge plate 3, moves to the top of the door frame 2. The locking rod 45 is inserted into the locking groove 44 to lock the turntable 33. Then, the hinge plate 3 to be welded is placed in the welding position. Then, the telescopic device 43 extends and moves downward with the lifting block 36 and the cross frame 37. The downward movement of the cross frame 37 moves the connecting frame 39 downward. When the bottom surface of the connecting frame 39 contacts the surface of the door frame 2, the two connecting frames 39 are located on both sides of the hinge plate 3. Then, the knob 42 is manually turned. The rotation of the knob 42 causes the bidirectional lead screw 41 to rotate, so that the two sliding blocks 38 move towards each other, causing the two connecting frames 39 to move towards each other to clamp and fix the hinge plate 3, ensuring the stability of the hinge plate 3 during the welding process and further improving the welding quality of the hinge plate 3 by the laser welding head 22.

[0040] The crossbar 37 is internally rotatably connected to a two-way lead screw 41, which is threadedly connected to two sliding blocks 38. One end of the two-way lead screw 41 extends to the outside of the crossbar 37, and a knob 42 is fixedly installed on the surface of one end of the two-way lead screw 41. An extension device 43 is fixedly installed on the top surface of the vertical groove 35. The extension end of the extension device 43 is fixedly connected to the surface of the lifting block 36. The extension device 43 is a conventional electrically controlled push rod in the prior art.

[0041] The surface of the turntable 33 has four locking slots 44 arranged in a circular array, and the surface of the frame plate 32 is fixedly equipped with locking rods 45 for locking the locking slots 44.

[0042] A slot 46 is provided in the middle of the surface of the base 1. A matching movable seat 47 is slidably connected inside the slot 46. A threaded rod 48 is rotatably connected inside the slot 46. The threaded rod 48 is threadedly connected to the movable seat 47. A drive motor 49 is fixedly installed on one side surface of the base 1. The output end of the drive motor 49 is fixedly connected to the threaded rod 48. The drive motor 49 is a conventional forward and reverse motor in the prior art.

[0043] The surface of the moving seat 47 is fixedly installed with a support frame 50, the top surface of the support frame 50 is fixedly installed with a sliding rail frame 51, the inside of the sliding rail frame 51 is slidably connected with a transverse block 52 matched with the sliding rail frame 51, the inner side surface of the transverse block 52 is fixedly connected with the surface of the movable box 16, the inside of the sliding rail frame 51 is rotatably connected with a screw rod 53, the screw rod 53 is threadedly connected with the transverse block 52, the side surface of the sliding rail frame 51 is fixedly installed with a motor 54, the motor 54 is a conventional motor 54 in the prior art, the output end of the motor 54 is fixedly connected with the screw rod 53, a plurality of hinge plates 3 are clamped and fixed through the interval arrangement of a plurality of connecting frames 39, a plurality of upper supporting plates 9, lower supporting plates 10 and slope frames 15 corresponding to the positions of the hinge plates 3 are arranged, and only one laser welding head 22 capable of adjusting the welding distance is arranged, so that the sequential welding of the plurality of hinge plates 3 can be completed, and the welding speed of the plurality of hinge plates 3 is improved.

[0044] The application uses the steps: when the door body welding tool is used, the initial position is that the horizontal block 52 is located at the middle position of the slide rail frame 51, and the slide rail frame 51 is located at one end of the base 1, and is used for clamping and fixing the connecting frame 39 of the hinge plate 3, which is away from the base 1 (it is noted that the total length of the slide rail frame 51 and the motor 54 is less than the width of the door frame 2), firstly, the door frame 2 is placed on the surface of the base 1 inside the four limiting seats 31 through the existing lifting device, and the four limiting seats 31 limit the door frame 2, then the rotary table 33 is manually rotated (the rotary table 33 is rotated by 180 degrees), the rotary table 33 is rotated with the vertical plate 34, and then the connecting frame 39 for clamping and fixing the hinge plate 3 is moved above the door frame 2, the rotary table 33 is locked through the lock rod 45 inserted into the lock slot 44, then the hinge plate 3 to be welded is placed at the welding position, then the telescopic device 43 is extended with the lifting block 36 and the horizontal frame 37 moving downward, the horizontal frame 37 moves downward with the connecting frame 39 moving downward (in the initial state, the distance between the two connecting frames 39 is greater than the width of the hinge plate 3), when the bottom surface of the connecting frame 39 contacts the surface of the door frame 2, at this time, the two connecting frames 39 are located at the two sides of the hinge plate 3, then the knob 42 is manually rotated, the knob 42 is rotated with the bidirectional screw rod 41, so that the two sliding blocks 38 move towards each other with the two connecting frames 39 moving towards each other to clamp and fix the hinge plate 3, then the motor 54 works with the screw rod 53 rotating, at this time, the horizontal block 52 slides in the slide rail frame 51 with the movable box 16 moving, the movable box 16 moves with the Z-shaped frame 17, the roller 18 and the laser welding head 22 moving respectively, when the laser welding head 22 moves to the position corresponding to the welding position of the outer side of the hinge plate 3, the motor 54 is stopped, at this time, the roller 18 is located at one side of the trapezoidal seat 14 and corresponds to the slope position of the trapezoidal seat 14, the driving motor 49 is rotated with the threaded rod 48 rotating, so that the moving seat 47 slides in the slot 46 with the support frame 50 and the slide rail frame 51 moving, the slide rail frame 51 moves with the movable box 16 moving towards the hinge plate 3, the movable box 16 moves with the Z-shaped frame 17 and the roller 18 moving, so that the roller 18 presses the slope surface of the trapezoidal seat 14, at this time, the trapezoidal seat 14 is pressed and moves with the connecting rod 13 and the sliding frame 6 moving, the sliding frame 6 moves with the sliding seat 5 moving in the fixed frame 4 to stretch the first spring 7, the sliding frame 6 also moves with the upper support plate 9 and the lower support plate 10 moving towards the hinge plate 3, the upper support plate 9 moves with the inclined frame 15 moving, when the arc guide plate 11 contacts the hinge plate 3 and continues to move, at this time, the hinge plate 3 presses the two arc guide plates 11, the two arc guide plates 11 move with the upper support plate 9 and the lower support plate 10 separating (the clamping force of the two connecting frames 39 on the hinge plate 3 is greater than the elastic force of the second spring 12), at this time, the upper support plate 9 and the lower support plate 10 move with the sliding block 8 moving to press the second spring 12, when the roller 18 moves to the plane of the trapezoidal seat 14, at this time, the upper support plate 9 moves with the inclined frame 15 moving to correspond to the position of the rotating wheel 20, with the movable box 16 continuing to move,At this time the roller 20 is extruded upward by the slope frame 15 and moves upward with the gear plate 19, the gear plate 19 moves with the gear 29, at this time the rack 21 moves downward with the laser welding head 22, when the laser welding head 22 moves to the end of the hinge plate 3, the laser welding head 22 works to weld the hinge plate 3 on the surface of the door frame 2, after the laser welding head 22 is welded, the roller 18 is on the plane of the trapezoidal seat 14, when the movable box 16 continues to move, the roller 18 moves to the other slope surface of the trapezoidal seat 14, at this time the slide 5 is reset under the action of the first spring 7 with the slide frame 6, at this time the upper support plate 9 and the lower support plate 10 are reset and separated from the hinge plate 3, the upper support plate 9 and the lower support plate 10 are reset under the action of the second spring 12, when the thickness of the hinge plate 3 is larger, at this time the upper support plate 9 is extruded upward by the hinge plate 3 and moves a larger distance, the upper support plate 9 moves upward with the slope frame 15 and a larger distance, the roller 20 is extruded upward by the slope frame 15 and moves upward with the gear plate 19 and a larger distance, at this time the laser welding head 22 moves downward with the rack 21 and a larger distance, so that the welding distance of the laser welding head 22 and the thicker hinge plate 3 is reduced, on the contrary, when the thickness of the hinge plate 3 is smaller, the upper support plate 9 is extruded upward by the hinge plate 3 and moves a smaller distance, the upper support plate 9 moves upward with the slope frame 15 and a smaller distance, the roller 20 is extruded upward by the slope frame 15 and moves upward with the gear plate 19 and a smaller distance, so that the laser welding head 22 moves a smaller distance, at this time the welding distance of the laser welding head 22 and the thinner hinge plate 3 is larger than that of the laser welding head 22 and the thicker hinge plate 3, when the laser welding head 22 welds the hinge plate 3, the welding quality of the hinge plate 3 is ensured, after the hinge plate 3 is welded, the horizontal moving block 52 is reset in the slide rail frame 51 and moves with the movable box 16, then the two connecting frames 39 are reset and do not clamp the hinge plate 3, the telescopic device 43 is retracted and moves upward with the connecting frame 39, finally the rotary table 33 is rotated and reset, and the welded door frame 2 is taken down by the existing lifting equipment, in the welding process of the laser welding head 22 and the hinge plate 3, the distance of the upward movement of the upper support plate 9 can be controlled according to the different thicknesses of the hinge plate 3, the distance of the upward movement of the slope frame 15 is further controlled, the welding distance of the laser welding head 22 and the hinge plate 3 is adjusted by the roller 20 being extruded by the slope frame 15 with different heights, compared with the traditional welding equipment, the welding tool can automatically adjust the welding distance of the laser welding head 22 and the hinge plate 3 according to the hinge plate 3 with different thicknesses, so as to ensure the welding distance of the laser welding head 22 and the hinge plate 3, solve the problem that the thicker hinge plate 3 is not firmly welded, and also solve the problem that the thinner hinge plate 3 is not penetrated and welded, so as to improve the welding quality of the hinge plate 3; the rotary table 33 is manually rotated, the rotary table 33 rotates with the vertical plate 34, so that the connecting frame 39 for clamping and fixing the hinge plate 3 moves above the door frame 2, the rotary table 33 is locked by inserting the lock rod 45 into the lock slot 44,Then the hinge plate 3 to be welded is placed in the welding position, and then the extender 43 extends the lifting block 36 and the cross frame 37 downward, the cross frame 37 moves downward with the connecting frame 39 moving downward, when the bottom surface of the connecting frame 39 contacts the surface of the door frame 2, at this time, the two connecting frames 39 are located on both sides of the hinge plate 3, then manually rotate the knob 42, the knob 42 rotates with the bidirectional screw rod 41, so that the two sliding blocks 38 move towards each other with the two connecting frames 39 moving towards each other to clamp and fix the hinge plate 3, ensure the stability of the hinge plate 3 during welding, and further improve the welding quality of the laser welding head 22 on the hinge plate 3; a plurality of connecting frames 39 are arranged at intervals to clamp and fix a plurality of hinge plates 3, a plurality of upper supporting plates 9, lower supporting plates 10 and inclined frames 15 corresponding to the positions of the hinge plates 3 are arranged, only one laser welding head 22 with adjustable welding distance is arranged, and sequential welding of a plurality of hinge plates 3 can be completed, and the welding speed of the plurality of hinge plates 3 is improved.

[0045] The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A door welding fixture, comprising a base (1) and a door frame (2) fixedly placed on its surface, characterized in that: Multiple hinge plates (3) to be welded are placed on the surface of the door frame (2). Multiple fixing brackets (4) corresponding to the positions of the hinge plates (3) are fixedly installed on the surface of the base (1). A matching slide seat (5) is slidably connected inside the fixing bracket (4). A slide frame (6) is fixedly installed on the surface of the slide seat (5). A first spring (7) is elastically connected between the slide seat (5) and the fixing bracket (4). Two sliders (8) are slidably connected inside the slide frame (6). An upper support plate (9) and a lower support plate (10) are fixedly installed on the surfaces of the two sliders (8). An arc guide plate (11) is provided on one side surface of both the upper support plate (9) and the lower support plate (10). A second spring is elastically connected between the two sliders (8) and the inner top surface and inner bottom surface of the slide frame (6). Spring (12), connecting rod (13) is fixedly installed on the surface of the slide (6), trapezoidal seat (14) is fixedly installed on one end of the connecting rod (13), inclined frame (15) is fixedly installed on one side of the upper support plate (9), movable box (16) is provided on one side of one of the fixed frames (4), Z-shaped frame (17) is fixedly installed on the surface of the movable box (16), roller (18) for pressing trapezoidal seat (14) is rotatably connected to one end of the Z-shaped frame (17), toothed plate (19) and rack (21) are slidably connected inside the movable box (16), rotating wheel (20) is rotatably connected to the bottom surface of the toothed plate (19), and laser welding head (22) for welding hinge plate (3) to the surface of door frame (2) is fixedly installed on the bottom surface of the rack (21).

2. The door welding fixture according to claim 1, characterized in that: The inner wall of the movable box (16) is fixedly installed with two first vertical frames (23) and two second vertical frames (24). The first vertical frame (23) has a matching movable block (25) slidably connected inside. The inner surface of the movable block (25) is fixedly connected to the side of the toothed plate (19). The toothed plate (19) is slidably connected to the first vertical frame (23) through the movable block (25). The second vertical frame (24) has a matching moving block (27) slidably connected inside. The inner surface of the moving block (27) is fixedly connected to the side surface of the rack (21). The rack (21) is slidably connected to the second vertical frame (24) through the moving block (27).

3. The door welding fixture according to claim 2, characterized in that: A third spring (26) is elastically connected between the first vertical frame (23) and the movable block (25). One end of the third spring (26) is fixedly connected to the inner top surface of the first vertical frame (23), and the other end of the third spring (26) is fixedly connected to the surface of the movable block (25). A fourth spring (28) is elastically connected between the second vertical frame (24) and the movable block (27). One end of the fourth spring (28) is fixedly connected to the inner bottom surface of the second vertical frame (24), and the other end of the fourth spring (28) is fixedly connected to the movable block (27).

4. The door welding fixture according to claim 2, characterized in that: The movable box (16) is rotatably connected to a gear (29), which meshes with a toothed plate (19) and a rack (21) respectively. A rotating shaft (30) is fixedly installed on the corresponding surface of the gear (29), and the rotating shaft (30) is rotatably connected to the inner wall of the movable box (16).

5. The door welding fixture according to claim 1, characterized in that: One end of the first spring (7) is fixedly connected to the surface of the slide (5), and the other end of the first spring (7) is fixedly connected to the fixing frame (4). One end of the second spring (12) is fixedly connected to the slider (8), and the other end of the second spring (12) is fixedly connected to the slide (6).

6. The door welding fixture according to claim 1, characterized in that: The base (1) has four corners fixedly mounted with limiting seats (31) for limiting the door frame (2). The base (1) has multiple frame plates (32) fixedly mounted on its surface. Each frame plate (32) is rotatably connected to a turntable (33). The turntable (33) is fixedly connected to a vertical plate (34). The vertical plate (34) has a vertical groove (35) on its inner side. The vertical groove (35) is slidably connected to a matching lifting block (36). The lifting block (36) is fixedly connected to a horizontal frame (37). The horizontal frame (37) is slidably connected to a corresponding sliding block (38). The surfaces of the two sliding blocks (38) are fixedly mounted with a connecting frame (39) for clamping and fixing the hinge plate (3). The inner sides of the ends of the two connecting frames (39) are provided with rubber pads (40).

7. The door welding fixture according to claim 6, characterized in that: The crossbar (37) is rotatably connected to a two-way lead screw (41), which is threadedly connected to two sliding blocks (38). One end of the two-way lead screw (41) extends to the outside of the crossbar (37), and a knob (42) is fixedly installed on the surface of one end of the two-way lead screw (41). An expansion joint (43) is fixedly installed on the top surface of the vertical groove (35), and the telescopic end of the expansion joint (43) is fixedly connected to the surface of the lifting block (36).

8. The door welding fixture according to claim 6, characterized in that: The surface of the turntable (33) is provided with four locking slots (44) arranged in a circular array, and the surface of the frame plate (32) is fixedly equipped with locking rods (45) for locking the locking slots (44).

9. The door welding fixture according to claim 1, characterized in that: A slot (46) is provided in the middle of the surface of the base (1). A matching movable seat (47) is slidably connected inside the slot (46). A threaded rod (48) is rotatably connected inside the slot (46). The threaded rod (48) is threadedly connected to the movable seat (47). A drive motor (49) is fixedly installed on one side surface of the base (1). The output end of the drive motor (49) is fixedly connected to the threaded rod (48).

10. The door welding fixture according to claim 9, characterized in that: A support frame (50) is fixedly installed on the surface of the movable seat (47). A slide rail frame (51) is fixedly installed on the top surface of the support frame (50). A matching transverse block (52) is slidably connected inside the slide rail frame (51). The inner side of the transverse block (52) is fixedly connected to the surface of the movable box (16). A screw (53) is rotatably connected inside the slide rail frame (51). The screw (53) is threadedly connected to the transverse block (52). A motor (54) is fixedly installed on the side surface of the slide rail frame (51). The output end of the motor (54) is fixedly connected to the screw (53).

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