Automatic calibration welding device for automobile seat framework

Abstract

The invention discloses an automobile seat framework automatic calibration welding device which comprises an automobile seat framework, two pre-installed sliding rails arranged under the automobile seat framework and a pre-calibration mechanism for clamping the two pre-installed sliding rails and bearing the automobile seat framework. The weldment distance adjusting mechanism is arranged in the pre-calibration mechanism; and the hole site pairing mechanism is arranged in the pre-calibration mechanism. The pre-calibration mechanism is arranged on the operation platform, the two selected pre-installed sliding rails are fixed by means of the pre-calibration mechanism, after the automobile seat framework is supported by the pre-calibration mechanism till being fixed, the two clamped pre-installed sliding rails can be effectively attached to the bottom of the automobile seat framework, and meanwhile, the pre-installed sliding rails can be fixed by means of the pre-calibration mechanism. The distance between the selected studs on the top face of the preassembled sliding rail is determined through the hole site pairing mechanism, finally, the studs can be stabilized on the determined position of the preassembled sliding rail, and therefore the situation that the studs and the preassembled sliding rail incline due to external force interference in the welding period is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile seat frame welding, and particularly to an automatic calibration welding device for an automobile seat frame. Background Art

[0002] The automobile seat frame is the core component for carrying passengers in the vehicle. During its production process, many key links are involved, including manual welding and robotic automatic welding, and the welding process directly affects the compressive strength and safety of the seat frame.

[0003] Currently, a specified number of screws need to be pre-welded on the slide rail at the bottom of the seat. Taking the screws as the fixing carriers, it is convenient for the rapid installation of subsequent components such as the backrest. However, the slide rail at the bottom of the existing stud seat needs to rely on a fixture to find the position, and the stud after finding the position also needs to be fixed on the slide rail at the bottom of the seat by the fixture. However, this positioning method requires frequent measurement of the spacing of the studs on the slide rail. At the same time, with the external force interference during welding, the welding extrusion force of the studs on the slide rail will change to a certain extent. Seriously, it will cause the contact part between the studs and the slide rail to tilt.

[0004] In view of this, an automatic calibration welding device for an automobile seat frame is designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] For this reason, the technical solution adopted by the present invention is as follows: An automatic calibration welding device for an automobile seat frame, comprising an automobile seat frame and two pre-installed sliding rails arranged directly below the automobile seat frame, a pre-calibration mechanism for clamping the two pre-installed sliding rails and bearing the automobile seat frame, a welding part distance adjustment mechanism arranged in the pre-calibration mechanism, a hole position pairing mechanism arranged in the pre-calibration mechanism, and four stud bolts arranged in the hole position pairing mechanism; the pre-calibration mechanism includes two cross beams, two foot pads arranged at the bottom of the cross beams, four limiting vertical plates arranged at the bottom of the cross beams, and two limiting vertical plates form a group, a limiting rod arranged in the middle of the inner side of a group of limiting vertical plates, a load-bearing bottom plate movably installed in a group of limiting vertical plates and located outside the limiting rod, a first spring arranged outside the limiting rod and pressing on the load-bearing bottom plate, a plug installed at the bottom end of the limiting rod, a magnetic adsorption guard plate movably installed inside the plug, a cross bar installed on the magnetic adsorption guard plate and penetrating into the load-bearing bottom plate, and a second spring arranged outside the magnetic adsorption guard plate; a chute is arranged inside the cross beam; the welding part distance adjustment mechanism includes a female pipe arranged in the chute and a third spring arranged inside the female pipe; the hole position pairing mechanism includes a support plate arranged at the top end of the third spring, a bracket arranged inside the support plate, two legs connected to the bracket, two chucks arranged on the two legs, a first fixture and a second fixture respectively connected to the two chucks.

[0007] In a preferred example of the present invention, it can be further configured that: the pre-calibration mechanism further includes two suspensions installed at the bottom of the two cross beams, a first hydraulic part arranged in the two limiting rods, and an end plate installed on the hydraulic sub-rod inside the first hydraulic part; The hole position pairing mechanism further includes a first traction frame connected to the end plate, a bottom support movably installed at the top end of the first traction frame, two second traction parts movably installed on the bottom support, two cushion blocks installed at the top of the second traction parts, a locking bolt arranged inside the second traction parts, and a lock distance cushion plate arranged outside the locking bolt and pressing on the top of the two cushion blocks.

[0008] In a preferred example of the present invention, it can be further configured that: the hole position pairing mechanism further includes a third traction part connected to the lock distance cushion plate, a gasket connected to the top end of the third traction part, the outer end of the bracket is movably installed inside the gasket, a column arranged at the top of the bracket, and a fourth spring arranged outside the column; Two symmetrically distributed arc-shaped frames are movably installed outside the first fixture and the second fixture, two sealing plates respectively arranged at the outer ends of the first fixture and the second fixture, and fixing bolts arranged inside the sealing plates.

[0009] In a preferred example of the present invention, it can be further configured that: T-shaped transverse grooves are arranged on the outer walls of the first fixture and the second fixture, and a rectangular notch adapted to the support plate is arranged inside the second fixture; On one side of the first fixture and the second fixture facing the top end of the stud, an anti - detachment end plate is provided.

[0010] In a preferred example of the present invention, it can be further configured that: the welding part distance - adjusting mechanism further includes a main slide plate and a sub - slide plate arranged outside the mother pipe and pressing on the tops of two cross beams, a second hydraulic component installed inside the main slide plate, and a truss installed at the top end of the hydraulic sub - rod inside the second hydraulic component; The truss is integrally in a U - shaped structure, and two chutes are provided inside the truss; A sub - rod is arranged inside the mother pipe, the bottom end of the sub - rod presses on the bottom end of a third spring, and the top end of the sub - rod presses on the inner wall of the mother pipe.

[0011] In a preferred example of the present invention, it can be further configured that: the magnetic - adsorption protection plate is integrally in an L - shaped structure, and the protrusion inside the magnetic - adsorption protection plate is used to limit and press the bottom of the pre - installed slide rail.

[0012] In a preferred example of the present invention, it can be further configured that: the limiting rod is provided with threads, and the plug moves upward along the threaded section of the limiting rod to adjust the longitudinal bearing pressure of the load - bearing bottom plate.

[0013] In a preferred example of the present invention, it can be further configured that: the bottom end of the support plate is movably installed in the chute, and the end of the third spring installed inside the support plate is used to provide anti - detachment protection for the support plate.

[0014] In a preferred example of the present invention, it can be further configured that: a slot is provided inside the distance - locking cushion plate, and after the distance - locking cushion plate is horizontally moved along the tops of two cushion blocks, the locking bolt can quickly fix the distance - locking cushion plate after adjusting the distance.

[0015] In a preferred example of the present invention, it can be further configured that: semi - circular grooves are provided on the inner sides of the first fixture and the second fixture, and an anti - slip layer is provided on the inner wall of the semi - circular grooves.

[0016] By adopting the above - mentioned technical solution, the beneficial effects obtained by the present invention are as follows: 1. By providing a pre - calibration mechanism on the operation platform in the present invention, two selected pre - installed slide rails are fixed by relying on the pre - calibration mechanism. When the automotive seat frame is supported by the pre - calibration mechanism until it is fixed, the two pre - installed slide rails being clamped will be effectively attached to the bottom of the automotive seat frame. At the same time, the hole - position pairing mechanism is used to determine the spacing of a plurality of studs on the top surface of the pre - installed slide rail. Finally, the plurality of studs can be made stable at the determined positions on the pre - installed slide rail, thereby avoiding the inclination between the studs and the pre - installed slide rail caused by external force interference during welding.

[0017] 2. By arranging two symmetrically distributed magnetic adsorption guard plates on the outer wall of the cross beam, after the overall support of the vehicle seat frame by the four magnetic adsorption guard plates, there will be a certain distance between the two pre-installed slide rails clamped by the pre-calibration mechanism and the vehicle seat frame. After multiple stud holes are located on the vehicle seat frame, the multiple studs pressed against the pre-installed slide rails can maintain an effective soldering gap, thereby effectively improving the compressive strength of the welding part between the studs and the pre-installed slide rails, and further avoiding the phenomenon of inconsistent heights caused by the welding protrusions squeezing the studs.

[0018] 3. After the vehicle seat frame is supported by the four magnetic adsorption guard plates, the independent vehicle seat frame serves as a reference for subsequent comparison of the welding of the pre-installed slide rails. Therefore, the frequent comparison of the distance between the studs and the pre-installed slide rails can be effectively reduced, thereby improving the welding efficiency between the studs and the pre-installed slide rails. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram when the present invention is in use; Figure 2 is a three-dimensional schematic diagram of the present invention; Figure 3 is an exploded schematic diagram of the present invention; Figure 4 is the present invention Figure 3 's exploded schematic diagram; Figure 5 is an exploded schematic diagram of the hole pairing mechanism of the present invention; Figure 6 is the present invention Figure 5 's exploded schematic diagram; Figure 7 is a schematic diagram of the partial explosion of the hole pairing mechanism of the present invention; Figure 8 is an exploded schematic diagram of the weldment distance adjustment mechanism of the present invention; Figure 9 is a bottom view schematic diagram of the pre-calibration mechanism of the present invention; Figure 10 is the present invention Figure 9 's exploded schematic diagram.

[0020] Reference Signs: 100, vehicle seat frame; 200, pre-installed slide rail; 300, pre-calibration mechanism; 310, cross beam; 3101, foot pad; 3102, suspension; 3103, first hydraulic component; 3104, end plate; 320, limiting vertical plate; 3201, limiting rod; 3202, plug; 3203, first spring; 330, load-bearing bottom plate; 340, cross bar; 3401, magnetic adsorption guard plate; 3402, second spring; 400, Welding Part Spacing Adjustment Mechanism; 410, Main Slide Plate; 420, Sub-slide Plate; 430, Second Hydraulic Component; 440, Truss; 4401, Chute; 450, Main Pipe; 4501, Third Spring; 4502, Sub-bar 500, Hole Position Pairing Mechanism; 510, First Traction Frame; 5101, Bottom Support; 5102, Second Traction Component; 5103, Spacer Block; 5104, Locking Spacing Pad; 520, Locking Bolt; 530, Third Traction Component; 5301, Gasket; 5302, Bracket; 5303, Column; 5304, Fourth Spring; 5305, Leg; 5306, Chuck; 5307, First Fixture; 5308, Second Fixture; 540, Sealing Plate; 5401, Fixed Bolt; 550, Support Plate; 560, Arc-shaped Frame 600, Stud Detailed Embodiment

[0021] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with the detailed embodiments and with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0022] It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the present invention.

[0023] The following describes an automatic calibration welding device for an automobile seat frame provided by some embodiments of the present invention with reference to the accompanying drawings. Embodiment 1:

[0024] Combined with Figures 1 to 10 As shown, an automatic calibration welding device for an automobile seat frame provided by the present invention includes an automobile seat frame 100 and two pre-installed slide rails 200 disposed directly below the automobile seat frame 100, a pre-calibration mechanism 300 that clamps the two pre-installed slide rails 200 and bears the automobile seat frame 100, a welding part spacing adjustment mechanism 400 disposed within the pre-calibration mechanism 300, a hole position pairing mechanism 500 disposed within the pre-calibration mechanism 300, and four studs 600 disposed within the hole position pairing mechanism 500. The pre-calibration mechanism 300 is used for pre-installing and calibrating the automobile seat frame 100 and the two pre-installed slide rails 200. The welding part spacing adjustment mechanism 400 is used for controlling the four studs 600 to find their positions along the top of the two pre-installed slide rails 200. The hole position pairing mechanism 500 is used for clamping the four studs 600 and assisting in welding and pressing the two pre-installed slide rails 200.

[0025] The pre-calibration mechanism 300 includes two cross beams 310, two foot pads 3101 arranged at the bottom of the cross beams 310, four limiting vertical plates 320 arranged at the bottom of the cross beams 310, and two limiting vertical plates 320 form a group. A limiting rod 3201 is arranged in the middle of the inner side of a group of limiting vertical plates 320. A load-bearing bottom plate 330 is movably installed in a group of limiting vertical plates 320 and is located outside the limiting rod 3201. A first spring 3203 is arranged outside the limiting rod 3201 and presses on the load-bearing bottom plate 330. A plug 3202 is installed at the bottom end of the limiting rod 3201. A magnetic attraction protection plate 3401 is movably installed inside the plug 3202. A cross bar 340 is installed on the magnetic attraction protection plate 3401 and penetrates into the load-bearing bottom plate 330. A second spring 3402 is arranged outside the magnetic attraction protection plate 3401; A chute is provided inside the cross beam 310; The magnetic attraction protection plate 3401 is integrally in an L-shaped structure, and the protrusion inside the magnetic attraction protection plate 3401 is used to limit and press the bottom of the pre-installed slide rail 200; The limiting rod 3201 is provided with threads, and the plug 3202 rises along the threaded section of the limiting rod 3201 to adjust the longitudinal bearing pressure of the load-bearing bottom plate 330; The welding part distance adjustment mechanism 400 includes a mother pipe 450 arranged in the chute and a third spring 4501 arranged inside the mother pipe 450; The hole position pairing mechanism 500 includes a support plate 550 arranged at the top end of the third spring 4501, a bracket 5302 arranged inside the support plate 550, two legs 5305 connected to the bracket 5302, two chucks 5306 arranged on the two legs 5305, a first fixture 5307 and a second fixture 5308 respectively connected to the two chucks 5306.

[0026] First, operate the first hydraulic component 3103. As the hydraulic sub-rod in the first hydraulic component 3103 extends, the end plate 3104 installed on the hydraulic sub-rod in the first hydraulic component 3103 will pull the first traction frame 510 to extend. The bottom support 5101 movably installed at the top end of the first traction frame 510 will drive the two second traction parts 5102 to extend. The locking bolt 520 arranged in the second traction part 5102 will drive the lock distance cushion plate 5104 to move horizontally and vertically. Finally, the two third traction parts 530 movably installed on the lock distance cushion plate 5104 will push the gasket 5301 and the bracket 5302 to move up and down. As the bracket 5302 rises, the two legs 5305 being pulled will drive the first fixture 5307 and the second fixture 5308 to contract. Under the limiting constraint of the two arc-shaped frames 560, the first fixture 5307 and the second fixture 5308 will quickly lock the top end of the stud 600; At this time, the four suspended studs 600 can move relatively directly above the two pre-installed slide rails 200. The spacing of the four studs 600 moving on the tops of the two pre-installed slide rails 200 can be quickly determined. After determination, the four studs 600 under pressure will maintain a constant extrusion pressure with the two pre-installed slide rails 200, which facilitates the welding equipment to effectively weld along the gap between the vehicle seat frame 100 and the four magnetic shielding plates 3401, and at the same time avoids abnormal inclination of the four studs 600 due to unstable pressure during welding; Moreover, the welding part of the stud 600 and the pre-installed slide rail 200 can be quickly cooled in the unobstructed gap. Embodiment 2:

[0027] Combined with Figures 5 to 10 As shown, on the basis of Embodiment 1, the pre-calibration mechanism 300 further includes two suspensions 3102 installed at the bottoms of the two cross beams 310, a first hydraulic component 3103 arranged in the two limit rods 3201, and an end plate 3104 installed on the hydraulic sub-rod in the first hydraulic component 3103.

[0028] Preferably, the two suspensions 3102 are fixedly installed at the bottoms of the two cross beams 310 by welding, and the four magnetic shielding plates 3401 are respectively arranged on the outer walls of the two pre-installed slide rails 200 to provide an effective support carrier for the bottom of the vehicle seat frame 100. The two groups of magnetic shielding plates 3401 and the four load-bearing bottom plates 330 can quickly correct and calibrate the two pre-installed slide rails 200.

[0029] The hole position pairing mechanism 500 further includes a first traction frame 510 connected to the end plate 3104, a bottom support 5101 movably installed at the top of the first traction frame 510, two second traction members 5102 movably installed on the bottom support 5101, two cushion blocks 5103 installed on the tops of the second traction members 5102, a locking bolt 520 arranged in the second traction member 5102, a lock distance cushion plate 5104 arranged outside the locking bolt 520 and pressing on the tops of the two cushion blocks 5103, a third traction member 530 connected to the lock distance cushion plate 5104, a gasket 5301 connected to the top of the third traction member 530, the outer end of the bracket 5302 is movably installed in the gasket 5301, a column 5303 arranged on the top of the bracket 5302, and a fourth spring 5304 arranged outside the column 5303.

[0030] Preferably, a hole adapted to the column 5303 is opened at the top end of the fourth spring 5304, and the top end of the fourth spring 5304 is adapted to press on the support plate 550; Specifically, as the third traction member 530 pushes the gasket 5301 up and down, the gasket 5301 constrained by the support plate 550 will drive the bracket 5302 to extend stably. After the bracket 5302 drives the two legs 5305 to extend, the two chucks 5306 connected to the two legs 5305 will drive the first fixture 5307 and the second fixture 5308 to open and close longitudinally along the support plate 550, so as to facilitate the quick fixation of studs 600 with different diameters and widths.

[0031] Two arc-shaped frames 560 are symmetrically installed outside the first fixture 5307 and the second fixture 5308, two sealing plates 540 respectively arranged at the outer ends of the first fixture 5307 and the second fixture 5308, and fixing bolts 5401 arranged inside the sealing plates 540; T-shaped transverse grooves are formed in the outer walls of the first fixture 5307 and the second fixture 5308, and a rectangular notch adapted to the support plate 550 is formed inside the second fixture 5308; Anti-slip end plates are arranged on one side of the first fixture 5307 and the second fixture 5308 facing the top of the stud 600; The bottom end of the support plate 550 is movably installed in the sliding groove 4401, and the end of the third spring 4501 installed inside the support plate 550 is used to provide anti-slip protection for the support plate 550; Slots are formed inside the lock distance cushion plate 5104, and after the lock distance cushion plate 5104 moves horizontally along the tops of the two cushion blocks 5103, the locking bolt 520 can quickly fix the lock distance cushion plate 5104 after adjusting the distance; Semicircular grooves are formed inside the first fixture 5307 and the second fixture 5308, and anti-slip layers are arranged on the inner walls of the semicircular grooves.

[0032] Specifically, a U-shaped groove is formed at one end of the lock distance cushion plate 5104 facing the second traction member 5102, and a rubber cushion layer is arranged on the inner wall of the U-shaped groove. When using a wrench to adjust the nut inside the locking bolt 520, the locking bolt 520 can quickly lock the lock distance cushion plate 5104 after horizontal movement. At this time, the lock distance cushion plate 5104 after adjusting the distance can finely adjust the distance of multiple studs 600. Embodiment 3:

[0033] Combined Figures 8 to 10 As shown, in the above embodiment, the weldment distance adjustment mechanism 400 further includes a main slide plate 410 and a sub-slide plate 420 arranged outside the mother pipe 450 and bearing on the tops of the two cross beams 310, a second hydraulic member 430 installed inside the main slide plate 410, and a truss 440 installed at the top of the hydraulic sub-rod inside the second hydraulic member 430; The truss 440 is integrally U-shaped, and two sliding grooves 4401 are formed inside the truss 440; Inside the main pipe 450, a sub-rod 4502 is provided. The bottom end of the sub-rod 4502 bears on the bottom end of the third spring 4501, while the top end of the sub-rod 4502 bears on the inner wall of the main pipe 450.

[0034] Preferably, the top end of the third spring 4501 is fixed inside the support plate 550 by welding. And lubricating oil is provided inside the main pipe 450. As the second hydraulic component 430 operates, the internal hydraulic sub-rod thereof will drive the truss 440 to lift and lower, and the truss 440 will drive the four support plates 550 to lift and lower synchronously. Along with the synchronous lifting and lowering of the four support plates 550, two adjacent support plates 550 will relatively extend with the center of the two pre-installed slide rails 200 as the reference plane, so as to ensure the effectiveness of the distance adjustment of the four studs 600 that are clamped and in a suspended state.

[0035] The working principle and usage process of the present invention: First, use bolts to fixedly install the four feet 3101 on the operating table until the top surfaces of the two cross beams 310 are level in the horizontal direction; Then, sequentially stretch the four magnetic attraction guard plates 3401 outwards until the maximum gap is expanded between two adjacent magnetic attraction guard plates 3401 and the side wall of one of the cross beams 310. Then, place a pre-installed slide rail 200 in this gap. Then, release the two magnetic attraction guard plates 3401 at this place. Under the lateral pressure of the second spring 3402, the two magnetic attraction guard plates 3401 will quickly clamp the pre-installed slide rail 200 on the outer wall of the cross beam 310. At this time, the load-bearing bottom plate 330 supported by the plug 3202 will provide an effective supporting force for the placed pre-installed slide rail 200; According to the above steps, pre-install another pre-installed slide rail 200 in the gap on the outer wall of the other cross beam 310. Then, place the whole automotive seat frame 100 on the tops of the four magnetic attraction guard plates 3401. Due to the magnetic attraction fixation of the four magnetic attraction guard plates 3401, the automotive seat frame 100 can be effectively adsorbed; Then, use a wrench to adjust the two locking bolts 520. After the two locking bolts 520 are loosened, control the distance between adjacent four groups of third traction members 530 by moving the distance-locking cushion plate 5104. After the first traction frame 510 is compressed and stretches the bottom support 5101, the two second traction members 5102 will control the relative extension of the two distance-locking cushion plates 5104. As the two distance-locking cushion plates 5104 are in an overall lifting trend, as the distance-locking cushion plate 5104 rises, the gasket 5301 and the bracket 5302 will rise along the vertical groove inside the support plate 550. Finally, the bracket 5302 will stretch the two legs 5305 to contract, and the top ends of the studs 600 will be fixed by the first clamp 5307 and the second clamp 5308 after being compressed under the limiting action of the two arc-shaped frames 560; When it is necessary to align the four studs 600 with the bottom hole positions of the vehicle seat frame 100, by operating the second hydraulic component 430, as the hydraulic sub-rod in the second hydraulic component 430 pushes the truss 440 to rise, the four support plates 550 supported by the truss 440 will lift upward until there is a certain distance between the four studs 600 and the vehicle seat frame 100. Then, operate the first hydraulic component 3103 again. Along with the end plate 3104 pulling the first traction frame 510, the lock distance backing plate 5104 in the transverse movement state will drive the support plate 550 and the mother pipe 450 to move transversely. Finally, the four studs 600 can be calibrated along the hole positions at the bottom of the vehicle seat frame 100, and the four calibrated studs 600 can be stably pressed on the vehicle seat frame 100, and the contact parts of the studs 600 and the vehicle seat frame 100 are exposed in the gap convenient for welding.

[0036] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.

Claims

1. An automatic calibration welding device for an automobile seat frame, comprising an automobile seat frame (100) and two pre-installed slide rails (200) arranged directly below the automobile seat frame (100), characterized in that, It further includes a pre-calibration mechanism (300) that clamps two pre-installed slide rails (200) and bears the automotive seat frame (100), a welding part distance adjustment mechanism (400) arranged inside the pre-calibration mechanism (300), a hole position pairing mechanism (500) arranged inside the pre-calibration mechanism (300), and four studs (600) arranged inside the hole position pairing mechanism (500); The pre-calibration mechanism (300) includes two cross beams (310), two foot pads (3101) arranged at the bottom of the cross beams (310), four limiting vertical plates (320) arranged at the bottom of the cross beams (310), and two limiting vertical plates (320) form a group. A limiting rod (3201) is arranged in the middle of the inner side of a group of limiting vertical plates (320). A load-bearing bottom plate (330) is movably installed inside a group of limiting vertical plates (320) and is located outside the limiting rod (3201). A first spring (3203) is arranged outside the limiting rod (3201) and presses on the load-bearing bottom plate (330). A plug (3202) is installed at the bottom end of the limiting rod (3201). A magnetic attraction protection plate (3401) is movably installed inside the plug (3202). A cross bar (340) is installed on the magnetic attraction protection plate (3401) and penetrates into the load-bearing bottom plate (330), and a second spring (3402) is arranged outside the magnetic attraction protection plate (3401); A chute is formed inside the cross beam (310); The welding part distance adjustment mechanism (400) includes a female pipe (450) arranged in the chute and a third spring (4501) arranged inside the female pipe (450); The hole position pairing mechanism (500) includes a support plate (550) arranged at the top end of the third spring (4501), a bracket (5302) arranged inside the support plate (550), two legs (5305) connected to the bracket (5302), two chucks (5306) arranged on the two legs (5305), a first fixture (5307) and a second fixture (5308) respectively connected to the two chucks (5306).

2. The automatic calibration welding device for an automobile seat frame according to claim 1, wherein The pre-calibration mechanism (300) further includes two suspensions (3102) installed at the bottom of the two cross beams (310), a first hydraulic part (3103) arranged inside the two limiting rods (3201), and an end plate (3104) installed on the hydraulic sub-rod inside the first hydraulic part (3103); The hole position pairing mechanism (500) further includes a first traction frame (510) connected to the end plate (3104), a bottom support (5101) movably installed at the top end of the first traction frame (510), two second traction parts (5102) movably installed on the bottom support (5101), two cushion blocks (5103) installed at the top of the second traction parts (5102), a locking bolt (520) arranged inside the second traction parts (5102), and a lock distance cushion plate (5104) arranged outside the locking bolt (520) and pressing on the top of the two cushion blocks (5103).

3. The automatic calibration welding device for an automobile seat frame according to claim 1, wherein, The hole position pairing mechanism (500) further includes a third traction member (530) connected to the lock distance backing plate (5104), a gasket (5301) connected to the top end of the third traction member (530), with the outer end of the bracket (5302) movably installed within the gasket (5301), a column (5303) provided at the top of the bracket (5302), and a fourth spring (5304) provided outside the column (5303); Symmetrically distributed two arc-shaped frames (560) are movably installed outside the first clamp (5307) and the second clamp (5308), two sealing plates (540) respectively provided at the outer ends of the first clamp (5307) and the second clamp (5308), and fixing bolts (5401) provided within the sealing plates (540).

4. An automatic calibration welding device for an automobile seat frame according to claim 1, characterized in that, T-shaped transverse grooves are provided on the outer walls of both the first clamp (5307) and the second clamp (5308), and a rectangular notch adapted to the support plate (550) is provided inside the second clamp (5308); Anti-disengagement end plates are provided on one side of the first clamp (5307) and the second clamp (5308) facing the top end of the stud (600).

5. An automatic calibration welding device for an automobile seat frame according to claim 1, characterized in that, The weldment distance adjustment mechanism (400) further includes a main sliding plate (410) provided outside the mother pipe (450) and bearing on the tops of two cross beams (310), a secondary sliding plate (420), a second hydraulic member (430) installed inside the main sliding plate (410), and a truss (440) installed at the top of the hydraulic sub-rod inside the second hydraulic member (430); The truss (440) is integrally of a U-shaped structure, and two sliding grooves (4401) are provided inside the truss (440); A sub-rod (4502) is provided inside the mother pipe (450), the bottom end of the sub-rod (4502) bears on the bottom end of the third spring (4501), and the top end of the sub-rod (4502) bears on the inner wall of the mother pipe (450).

6. The automatic calibration welding device for an automotive seat frame according to claim 1, characterized in that, The magnetic attraction guard plate (3401) is integrally of an L-shaped structure, and the protrusion inside the magnetic attraction guard plate (3401) is used to limit and press the bottom of the pre-installed slide rail (200).

7. An automatic calibration welding device for an automobile seat frame according to claim 1, characterized in that, Threads are provided on the limit rod (3201), and the plug (3202) rises along the threaded section of the limit rod (3201) to adjust the longitudinal bearing pressure of the load-bearing bottom plate (330).

8. An automatic calibration welding device for an automobile seat frame according to claim 1, characterized in that, The bottom end of the support plate (550) is movably installed inside the sliding groove (4401), and the end of the third spring (4501) installed inside the support plate (550) is used to provide anti-disengagement protection for the support plate (550).

9. The automatic calibration welding device for an automotive seat frame according to claim 2, wherein A slot is provided inside the lock distance backing plate (5104), and after the lock distance backing plate (5104) is horizontally displaced along the tops of two cushion blocks (5103), the locking bolt (520) can quickly fix the lock distance backing plate (5104) with the adjusted distance.

10. The automatic calibration welding device for an automobile seat frame according to claim 1, characterized in that, Semicircular grooves are provided on the inner sides of both the first clamp (5307) and the second clamp (5308), and anti-slip layers are provided on the inner walls of the semicircular grooves.

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