Welding device for automobile seat

Abstract

The invention provides a welding device for an automobile seat, and relates to the technical field of seat welding. A storage shell is fixedly connected to the upper surface of the supporting seat, the storage shell is filled with hydraulic oil, the storage shell is slidably connected with a pressing part, the pressing part is sleeved with a first reset spring, a V-shaped groove is formed in the upper surface of the pressing part, and a rotating frame is hinged to the upper surface of the storage shell through a supporting rod. The upper surface of the rotating frame is fixedly connected with a linear driver, and a driving shaft of the linear driver is fixedly connected with a V-shaped block; the outer side face of the storage shell is slidably connected with a supporting plate used for supporting the straight pipe, a conveying cavity is formed in the supporting plate, an oil conveying pipe is communicated between the conveying cavity and the storage shell, the conveying cavity is slidably connected with a first positioning plate used for positioning the straight pipe, and a second positioning plate used for positioning the guide sleeve is arranged on the upper surface of the storage shell. The guide sleeve has the effect of reducing the angle error between the guide sleeve and the reference surface.

Description

Technical Field

[0001] The invention relates to the technical field of seat welding, and in particular to a welding device for automobile seats. Background Art

[0002] Car seat welding refers to the process of fixing the seat frame into shape through welding technology. The car seat frame is the basic supporting structure of the seat, and welding is the key process to firmly connect the various parts of the frame. Through welding, the stability and durability of the seat frame are ensured, thus providing a safe and comfortable riding experience for drivers and passengers.

[0003] Reference Figure 1 and Figure 2 The automobile seat frame includes a U-shaped tube frame 8 and a guide sleeve 9. The U-shaped tube frame 8 is located at the upper end of the automobile seat frame as a supporting frame of the headrest. The cross section of the U-shaped tube frame 8 is a hollow circle. The U-shaped tube frame 8 is composed of a bent tube 81 and a straight tube 82. During the production process of the U-shaped tube frame 8, the bent tube 81 needs to be extruded and deformed to produce a welding surface 811. The guide sleeve 9 is used to connect with the headrest. The processing personnel weld the guide sleeve 9 at the welding surface 811, thereby welding the guide sleeve 9 to the U-shaped tube frame 8.

[0004] Regarding the above-mentioned related technologies, since the U-shaped tube rack will rebound after being bent and formed, it will have dimensional errors during the extrusion process of the welding surface. Therefore, when processing the welding surface, the positioning of the U-shaped tube rack has dimensional errors. The accumulated errors increase the error of the angle between the reference plane formed by the central axes of the two straight tubes and the welding surface.

[0005] During production in the workshop, the processing personnel place the guide sleeve on a horizontal plane, and then place the U-shaped pipe rack on the guide sleeve for welding. At this time, the welding surface is parallel to the upper surface of the guide sleeve. Welding in this way may increase the angle error between the reference plane formed by the central axis of the two straight tubes of the welded product and the upper surface of the guide sleeve, increase the angle error of the seat headrest, and have a negative impact on the quality of the car seat. Summary of the invention

[0006] In view of this, the present invention provides a welding device for automobile seats, which aims to solve the problem of placing a U-shaped tube frame on a guide sleeve for welding, which increases the angular error between the reference plane formed by the central axis of the two straight tubes of the welded product and the upper surface of the guide sleeve.

[0007] The cam is provided with a plurality of springs, the springs being arranged on the upper surface of the support seat and the upper surface of the support seat being provided with a plurality of springs, the springs being arranged on the upper surface of the support seat and the upper surface of the support seat being provided with a plurality of springs.

[0008] By adopting the above technical solution, the angle between the support plate and the upper surface of the guide sleeve is equal to the angle between the reference plane formed by the central axis of the two straight tubes of the target product and the guide sleeve. The V-shaped block moves downward while pushing the welding surface close to the guide sleeve. On the other hand, the U-shaped pipe rack pushes the pressing piece downward, so that the hydraulic oil pushes the two positioning plates to move in the horizontal direction to adjust the position of the welding surface relative to the guide sleeve. In addition, the V-shaped block cooperates with the support plate to extrude and shape the U-shaped pipe rack, calibrate the angle between the welding surface and the reference plane, reduce the angle error between the guide sleeve and the reference plane, and help reduce the angle error of the car seat headrest.

[0009] Optionally, the inner side surface of the second positioning plate is slidably connected to a fixing plate via a sliding rod, the fixing plate abuts against the outer side surface of the guide sleeve, and the sliding rod is sleeved with a compression spring.

[0010] By adopting the above technical solution, the extrusion spring pushes the two fixing plates to move closer to each other to fasten and position the guide sleeve.

[0011] Optionally, the pressing piece is fixedly connected to a transmission rod 1, the material storage shell is connected to a transmission rod 2, the downward movement of the transmission rod 1 can push the transmission rod 2 to move horizontally, the material storage shell is slidably connected to a support block for supporting the guide sleeve, and the transmission rod 2 can push the support block to move downward.

[0012] Optionally, a second return spring is connected between the material storage shell and the support block, and the second return spring can push the support block upward, and the upward movement of the support block can push the fixed plate out of the guide sleeve.

[0013] Optionally, a transmission slope 1 is formed on the upper surface of the support block, and a transmission slope 2 capable of abutting against the transmission slope 1 is formed on the lower bottom surface of the fixed plate.

[0014] Optionally, the material storage shell is vertically provided with a slide groove, the outer side surface of the support plate is fixedly connected with a slider, and the slider is slidably connected to the slide groove.

[0015] Optionally, a guide rod is fixedly connected in the slide groove, the slider is slidably sleeved on the guide rod, a return spring three is sleeved on the guide rod, and the return spring three is located between the slider and the inner bottom surface of the slide groove.

[0016] Optionally, the inner side surface of the V-shaped block and the inner side surface of the V-shaped groove are both rotatably connected to support rollers, and the support rollers abut against the outer side surface of the U-shaped pipe rack.

[0017] By adopting the above technical solution, when the positioning plate pushes the straight pipe to move in the horizontal direction, the U-shaped pipe rack drives the supporting roller to rotate, thereby converting the sliding friction between the inner side surface of the V-shaped block and the U-shaped pipe rack and the sliding friction between the inner side surface of the V-shaped groove and the U-shaped pipe rack into rolling friction, thereby reducing the wear caused by the horizontal movement of the U-shaped pipe rack when positioning the welding surface and the guide sleeve.

[0018] Optionally, a locking groove is provided on the outer side of the rotating frame, and the material storage shell is hinged with a locking plate that can engage with the locking groove. The engagement of the locking plate with the locking groove can limit the rotation of the rotating frame, and a return torsion spring is connected between the material storage shell and the locking plate.

[0019] By adopting the above technical solution, when the rotating frame drives the V-shaped block to rotate and clamp the U-shaped pipe rack, the reset torsion spring drives the locking plate to rotate and clamp into the locking groove, so that the locking plate limits the rotation of the rotating frame, thereby improving the stability of the V-shaped block clamping and fixing the U-shaped pipe rack.

[0020] Optionally, an upper chamber and a lower chamber are provided in the material storage shell, hydraulic oil is located in the upper chamber and the lower chamber, the material pressing piece is slidably connected to the inner side surface of the lower chamber, a transmission pipe is connected between the upper chamber and the lower chamber, and a transmission piece capable of limiting the rotation of the locking plate is slidably connected in the upper chamber.

[0021] By adopting the above technical solution, the hydraulic oil in the upper chamber pushes the transmission part to move and abut the side wall of the locking plate, thereby limiting the locking plate from reversing and disengaging from the locking groove, reducing the possibility of processing personnel accidentally pushing the locking plate out of the locking groove during the welding process, and improving the stability of the locking plate locking rotating frame.

[0022] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects: 1. The angle between the support plate and the upper surface of the guide sleeve is equal to the angle between the reference plane formed by the central axis of the two straight tubes of the target product and the guide sleeve. The V-shaped block moves downward to push the welding surface close to the guide sleeve. On the other hand, the U-shaped pipe rack pushes the pressing piece downward, so that the hydraulic oil pushes the two positioning plates to move in the horizontal direction to adjust the position of the welding surface relative to the guide sleeve. In addition, the V-shaped block cooperates with the support plate to extrude and shape the U-shaped pipe rack, calibrate the angle between the welding surface and the reference plane, reduce the angle error between the guide sleeve and the reference plane, and help reduce the angle error of the car seat headrest.

[0023] 2. The hydraulic oil in the upper chamber pushes the transmission member to move against the side wall of the locking plate, thereby limiting the locking plate from reversing and disengaging from the locking groove, reducing the possibility of the processing personnel accidentally pushing the locking plate out of the locking groove during the welding process, and improving the stability of the locking plate locking rotating frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A top view of a U-shaped pipe rack according to an embodiment of the present invention; Figure 2 is a cross-sectional view of a U-shaped pipe rack according to an embodiment of the present invention; Figure 3 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 4 A schematic diagram of the internal structure of a material storage housing according to an embodiment of the present invention; Figure 5 It is a cross-sectional view of a material storage housing, a material pressing member and a rotating frame according to an embodiment of the present invention; Figure 6 A cross-sectional view of a material storage housing, a material pressing member and a rotating frame from another perspective in an embodiment of the present invention; Figure 7 It is a cross-sectional view of a slider and a guide rod according to an embodiment of the present invention.

[0025] Explanation of reference numerals: 1. Support seat; 11. Material storage housing; 111. Slide groove; 112. Sliding block; 113. Guide rod; 114. Return spring three; 115. Upper chamber; 116. Lower chamber; 12. Pressing piece; 121. Pressing plate; 122. Connecting rod; 123. Loading plate; 13. Return spring one; 14. V-shaped groove; 15. Support rod; 2. Rotating frame; 21. Linear drive; 22. V-shaped block; 23. Locking groove; 3. Support plate; 31. Transmission chamber; 32. Oil pipeline; 33. Positioning plate one; 4. Positioning plate Position plate two; 41, slide bar; 42, fixed plate; 421, transmission ramp two; 43, extrusion spring; 5, transmission rod one; 51, transmission rod two; 511, transmission ramp four; 512, transmission ramp five; 52, support block; 521, transmission ramp one; 522, transmission ramp six; 53, reset spring two; 54, transmission ramp three; 6, support roller; 7, locking plate; 71, reset torsion spring; 72, transmission pipe; 73, transmission part; 8, U-shaped pipe rack; 81, bending pipe; 811, welding surface; 82, straight pipe; 9, guide sleeve. DETAILED DESCRIPTION

[0026] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be combined with the embodiments of the present invention. Figure 1-Figure 7 , the technical solution of the embodiment of the present invention is clearly and completely described.

[0027] This embodiment provides a welding device for a car seat. Figure 1 and Figure 2 The U-shaped pipe rack 8 is composed of a bent pipe 81 and a straight pipe 82. Two straight pipes 82 are provided and fixedly connected to both ends of the bent pipe 81. The outer side of the bent pipe 81 is extruded to produce a welding surface 811. The processing personnel weld the upper surface of the guide sleeve 9 to the welding surface 811 to weld the U-shaped pipe rack 8 and the guide sleeve 9. The surface formed by the central axes of the two straight pipes 82 is the reference surface.

[0028] Reference Figure 3 , Figure 4 and Figure 5A welding device for a car seat includes a support seat 1, a material storage shell 11, a V-shaped block 22 for fixing a bent tube 81, a support plate 3 for supporting a straight tube 82, and a positioning plate 4 for positioning a guide sleeve 9. The support seat 1 is placed on a horizontal plane, the material storage shell 11 is fixedly connected to the upper surface of the support seat 1, and the interior of the material storage shell 11 is filled with hydraulic oil. The material storage shell 11 is vertically slidably connected with a pressing piece 12, and the pressing piece 12 can squeeze the hydraulic oil when it moves downward. The pressing piece 12 is composed of a pressing plate 121, a connecting rod 122 and a bearing plate 123, the connecting rod 122 is fixedly connected between the pressing plate 121 and the bearing plate 123, the pressing plate 121 is slidably connected to the inner side of the material storage shell 11, and a reset spring 13 is sleeved on the connecting rod 122, and the reset spring 13 is located between the material storage shell 11 and the bearing plate 123.

[0029] Reference Figure 3 , Figure 4 and Figure 5 The outer side of the material storage housing 11 is slidably connected with a support plate 3 for supporting the straight pipe 82. The angle between the support plate 3 and the upper surface of the guide sleeve 9 is equal to the angle between the reference surface of the straight pipe 82 in the target product and the guide sleeve 9. A transmission cavity 31 is provided in the support plate 3. An oil delivery pipe 32 is fixedly connected between the transmission cavity 31 and the material storage housing 11. The transmission cavity 31 is slidably connected with two positioning plates 1 33. The two positioning plates 1 33 are located on both sides of the V-shaped block 22. The two positioning plates 1 33 can be moved away from each other to position the straight pipe 82.

[0030] Reference Figure 4 , Figure 5 and Figure 6 , a V-shaped groove 14 for placing the U-shaped pipe rack 8 is provided on the upper surface of the load-bearing plate 123. Two support rods 15 are vertically fixedly connected to the upper surface of the storage housing 11, and a rotating frame 2 is hinged between the two support rods 15. A linear drive 21 is fixedly connected to the upper surface of the rotating frame 2, and a driving shaft of the linear drive 21 is fixedly connected to a V-shaped block 22 for pressing the U-shaped pipe rack 8 downward. Four positioning plates 24 are arranged on the upper surface of the storage housing 11, and the four positioning plates 24 are evenly distributed to both sides of the V-shaped block 22. Among them, on one side of the V-shaped block 22, the guide sleeve 9 is placed between the two positioning plates 24.

[0031] When welding is required, the processing personnel place the two guide sleeves 9 between the two positioning plates 4, and then rotate the rotating frame 2 counterclockwise (refer to Figure 4 ), place the U-shaped pipe rack 8 in the V-shaped groove 14, and place the straight pipe 82 on the support plate 3. Then rotate the rotating rack 2 clockwise to reset (refer to Figure 4), the V-shaped block 22 rotates with the rotating frame 2 and abuts against the U-shaped pipe frame 8, and the V-shaped block 22 cooperates with the V-shaped groove 14 to clamp the U-shaped pipe frame 8. The linear drive 21 pushes the V-shaped block 22 to move downward and press the U-shaped pipe frame 8, and the V-shaped block 22 continues to move downward to push the U-shaped pipe frame 8 downward, and the U-shaped pipe frame 8 squeezes the support plate 3 to move downward.

[0032] At the same time, the U-shaped pipe rack 8 pushes the bearing plate 123 to move downward, and the bearing plate 123 pushes the pressing plate 121 to move downward through the connecting rod 122 to squeeze the hydraulic oil in the storage shell 11. The hydraulic oil enters the transmission chamber 31 through the oil pipe 32 to squeeze the two positioning plates 133 to move away from each other. When the positioning plate 133 moves, it pushes the straight pipe 82 to move, and the bending pipe 81 moves with the straight pipe 82 to the center, so that the welding surface 811 coincides with the upper surface of the guide sleeve 9. The processing personnel use a welding gun to weld the guide sleeve 9 to the welding surface 811. After welding is completed, the linear drive 21 drives the V-shaped block 22 to move upward, and the return spring 13 pushes the pressing piece 12 to move upward. The hydraulic oil in the transmission chamber 31 flows back to the storage shell 11 through the oil pipe 32, and the processing personnel flip the rotating frame 2 to take out the U-shaped pipe rack 8.

[0033] The angle between the support plate 3 and the upper surface of the guide sleeve 9 is equal to the angle between the reference plane of the target product straight tube 82 and the guide sleeve 9. The V-shaped block 22 moves downward to push the welding surface 811 close to the guide sleeve 9. On the other hand, the U-shaped pipe rack 8 pushes the pressing piece 12 downward, so that the hydraulic oil pushes the two positioning plates 133 to move in the horizontal direction to adjust the position of the welding surface 811 relative to the guide sleeve 9. In addition, the V-shaped block 22 cooperates with the support plate 3 to extrude and shape the U-shaped pipe rack 8, calibrate the angle between the welding surface 811 and the reference plane, reduce the angle error between the guide sleeve 9 and the reference plane, and help reduce the angle error of the car seat headrest.

[0034] Reference Figure 3 and Figure 7 The material storage housing 11 is vertically provided with a chute 111, and a guide rod 113 is vertically fixedly connected in the chute 111. A slider 112 which is slidably sleeved on the guide rod 113 is fixedly connected to the outer side of the support plate 3. A reset spring 114 is sleeved on the guide rod 113, and the reset spring 114 is located between the slider 112 and the inner bottom surface of the chute 111. The support plate 3 is slidably connected to the material storage housing 11 through the slider 112 and the guide rod 113. When the U-shaped pipe rack 8 moves downward, it pushes the support plate 3 to move downward, and the slider 112 moves downward with the support plate 3 to compress the reset spring 114. When the processing personnel remove the welded U-shaped pipe rack 8, the reset spring 114 pushes the slider 112 and the support plate 3 to move upward and reset. When the support plate 3 moves vertically, the guide rod 113 is conducive to maintaining the accuracy of the angle between the support plate 3 and the upper surface of the guide sleeve 9.

[0035] Reference Figure 4 The inner side surface of the V-shaped block 22 and the inner side surface of the V-shaped groove 14 are both rotatably connected with a plurality of support rollers 6, and the support rollers 6 abut against the outer side surface of the U-shaped pipe rack 8. When the positioning plate 33 pushes the straight pipe 82 to move in the horizontal direction, the U-shaped pipe rack 8 drives the support rollers 6 to rotate, thereby converting the sliding friction between the inner side surface of the V-shaped block 22 and the U-shaped pipe rack 8 and the sliding friction between the inner side surface of the V-shaped groove 14 and the U-shaped pipe rack 8 into rolling friction, thereby reducing the wear caused by the horizontal movement of the U-shaped pipe rack 8 when positioning the welding surface 811 and the guide sleeve 9.

[0036] Reference Figure 4 and Figure 6 On one side of the V-shaped block 22, a slide bar 41 is slidably connected to the inner side surfaces of the two positioning plates 4, and a fixed plate 42 is fixedly connected to the end of the slide bar 41 away from the positioning plate 4, and the guide sleeve 9 is placed between the two fixed plates 42, and the fixed plate 42 abuts against the outer side surface of the guide sleeve 9, and a compression spring 43 is sleeved on the slide bar 41. The compression spring 43 pushes the two fixed plates 42 to move closer to each other to tighten and position the guide sleeve 9.

[0037] Reference Figure 4 and Figure 6 , the lower bottom surface of the bearing plate 123 is fixedly connected with two transmission rods 1 5, the two transmission rods 1 5 are respectively located on both sides of the V-shaped block 22, and the lower bottom surface of the transmission rod 1 5 is a transmission inclined plane 3 54. The storage housing 11 is horizontally slidably connected with a transmission rod 2 51, and the two ends of the transmission rod 2 51 are respectively provided with a transmission inclined plane 4 511 and a transmission inclined plane 5 512, and the transmission inclined plane 4 511 can abut against the transmission inclined plane 3 54. The storage housing 11 is vertically slidably connected with a support block 52 for supporting the guide sleeve 9, the support block 52 is located below the fixed plate 42, and the transmission rod 2 51 and the support block 52 are both provided with two and distributed on both sides of the V-shaped block 22, and the side wall of the support block 52 is provided with a transmission inclined plane 6 522 that can abut against the transmission inclined plane 5 512. The upper surface of the support block 52 is provided with a transmission inclined plane 1 521, and the lower bottom surface of the fixed plate 42 is provided with a transmission inclined plane 2 421 that can abut against the transmission inclined plane 1 521. A second return spring 53 is connected between the material storage housing 11 and the support block 52 . The second return spring 53 can push the support block 52 upward. The upward movement of the support block 52 can push the fixed plate 42 to separate from the guide sleeve 9 .

[0038] The return spring 2 53 pushes the support block 52 to move upward, and the support block 52 pushes the two fixed plates 42 to move away from each other through the transmission slope 1 521 and the transmission slope 2 421, so that the distance between the two fixed plates 42 is greater than the width of the guide sleeve 9, thereby providing space for the guide sleeve 9 to be placed on the support block 52, and the extrusion spring 43 is compressed at this time. When the linear actuator 21 pushes the pressing piece 12 to move downward through the V-shaped block 22, the bearing plate 123 moves downward synchronously with the pressing piece 12, and the transmission rod 1 5 moves downward with the bearing plate 123 through the transmission slope 3 54 and the transmission slope 4 511 to push the transmission rod 2 51 to move horizontally close to the support block 52, and the transmission rod 2 51 pushes the support block 52 to move downward through the transmission slope 5 512 and the transmission slope 6 522, and the return spring 2 53 is compressed at this time. The support block 52 moves downward, so that the transmission slope 1 521 is separated from the transmission slope 2 421, and the extrusion spring 43 pushes the two fixed plates 42 to move close to each other to tighten and position the guide sleeve 9.

[0039] After welding is completed, the linear drive 21 drives the V-shaped block 22 to move upward, the return spring 13 pushes the load-bearing plate 123 to move upward, and the transmission rod 1 5 moves upward with the load-bearing plate 123 to disengage from the transmission rod 2 51. At this time, the transmission rod 2 51 stops pushing the support block 52, and the return spring 2 53 pushes the support block 52 to move upward. The support block 52 pushes the two fixed plates 42 away from each other again through the transmission bevel 1 521 and the transmission bevel 2 421, so that the fixed plate 42 is separated from the guide sleeve 9, so that the processing personnel can take out the welded U-shaped pipe rack 8.

[0040] In summary, the processing personnel places the guide sleeve 9 between the fixed plates 42. When the V-shaped block 22 pushes the U-shaped pipe rack 8 downward, the fixed plates 42 approach each other to tighten and position the guide sleeve 9. When the V-shaped block 22 moves upward to disengage from the U-shaped pipe rack 8, the fixed plates 42 turn away from the guide sleeve 9 to allow the processing personnel to take out the welded U-shaped pipe rack 8.

[0041] Reference Figure 5 The outer side of the rotating frame 2 is provided with a locking groove 23, and the material storage housing 11 is hinged with a locking plate 7 that can engage with the locking groove 23. The locking plate 7 is engaged with the locking groove 23 to limit the counterclockwise rotation of the rotating frame 2, and a reset torsion spring 71 is connected between the material storage housing 11 and the locking plate 7. After the rotating frame 2 drives the V-shaped block 22 to rotate clockwise to clamp the U-shaped pipe rack 8, the reset torsion spring 71 drives the locking plate 7 to rotate counterclockwise and snap into the locking groove 23, so that the locking plate 7 limits the counterclockwise rotation of the rotating frame 2, thereby improving the stability of the V-shaped block 22 clamping and fixing the U-shaped pipe rack 8.

[0042] Reference Figure 5The material storage housing 11 is provided with an upper chamber 115 and a lower chamber 116, and hydraulic oil is located in the upper chamber 115 and the lower chamber 116. The material pressing piece 12 is slidably connected to the inner side of the lower chamber 116. A transmission pipe 72 is connected between the upper chamber 115 and the lower chamber 116, and the transmission pipe 72 extends into the bottom of the lower chamber 116. A transmission member 73 capable of limiting the rotation of the locking plate 7 is slidably connected in the upper chamber 115. When the linear actuator 21 pushes the material pressing piece 12 to move downward through the V-shaped block 22, the material pressing plate 121 squeezes the hydraulic oil in the lower chamber 116 into the upper chamber 115 through the transmission pipe 72, and the hydraulic oil in the upper chamber 115 pushes the transmission member 73 to move against the side wall of the locking plate 7, thereby limiting the counterclockwise rotation of the locking plate 7 to disengage from the locking groove 23, reducing the operation of the processing personnel accidentally touching the locking plate 7 to disengage from the locking groove 23 during the welding process, and improving the stability of the locking plate 7 locking the rotating frame 2.

[0043] The implementation principle of a welding device for automobile seats in an embodiment of the present invention is as follows: the processing personnel respectively place two guide sleeves 9 between two positioning plates 4, place the U-shaped pipe rack 8 in the V-shaped groove 14, and place the straight pipe 82 on the support plate 3. Then the processing personnel rotate the rotating frame 2 to reset, the reset torsion spring 71 drives the locking plate 7 to enter the locking groove 23, the linear driver 21 pushes the V-shaped block 22 to move downward and press the U-shaped pipe rack 8, the V-shaped block 22 continues to move downward to push the U-shaped pipe rack 8 downward, the U-shaped pipe rack 8 pushes the pressing piece 12 to move downward to squeeze the hydraulic oil, the hydraulic oil enters the transmission chamber 31 through the oil pipe 32 to squeeze the two positioning plates 33 away from each other and move the U-shaped pipe rack 8 to the center in the horizontal direction.

[0044] When the linear actuator 21 pushes the pressing piece 12 downward through the V-shaped block 22, the bearing plate 123 moves downward synchronously with the pressing piece 12, and the transmission rod 15 moves downward with the bearing plate 123 to push the transmission rod 2 51 to move horizontally. The transmission rod 2 51 pushes the support block 52 to move downward and disengage from the fixed plate 42, and the extrusion spring 43 pushes the two fixed plates 42 to move closer to each other to tighten and position the guide sleeve 9. The processing personnel use a welding gun to weld the guide sleeve 9 to the welding surface 811. After welding, the linear actuator 21 drives the V-shaped block 22 to move upward, and the fixed plate 42 moves away from the guide sleeve 9, and the reset spring 13 pushes the pressing piece 12 to move upward. The hydraulic oil in the transmission chamber 31 flows back to the storage shell 11 through the oil pipe 32, and the processing personnel flip the rotating frame 2 to take out the welded U-shaped pipe rack 8.

[0045] In addition, it should be noted that in the description of the present invention, the terms "install", "connect" and "connect" should be understood in a broad sense.

[0046] The above are preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A welding device for a car seat, comprising a support seat (1), characterized in that: The upper surface of the support seat (1) is fixedly connected to a material storage shell (11), the interior of the material storage shell (11) is filled with hydraulic oil, the material storage shell (11) is slidably connected to a material pressing piece (12) for squeezing the hydraulic oil, a return spring (13) is sleeved on the material pressing piece (12), a V-shaped groove (14) is formed on the upper surface of the material pressing piece (12), the upper surface of the material storage shell (11) is hinged to a rotating frame (2) via a support rod (15), the upper surface of the rotating frame (2) is fixedly connected to a linear driver (21), and the driving shaft of the linear driver (21) is fixedly connected to a V-shaped block (22) for fixing the U-shaped pipe rack (8); The outer side surface of the material storage shell (11) is slidably connected to a support plate (3) for supporting the straight pipe (82), a transmission cavity (31) is provided in the support plate (3), an oil delivery pipe (32) is connected between the transmission cavity (31) and the material storage shell (11), the transmission cavity (31) is slidably connected to a positioning plate 1 (33) for positioning the straight pipe (82), and a positioning plate 2 (4) for positioning the guide sleeve (9) is provided on the upper surface of the material storage shell (11).

2. A welding device for automobile seats according to claim 1, characterized in that: The inner side surface of the second positioning plate (4) is slidably connected to a fixing plate (42) via a sliding rod (41); the fixing plate (42) abuts against the outer side surface of the guide sleeve (9); and a compression spring (43) is sleeved on the sliding rod (41).

3. A welding device for automobile seats according to claim 2, characterized in that: The material pressing member (12) is fixedly connected to a transmission rod 1 (5), and the material storage housing (11) is connected to a transmission rod 2 (51). The downward movement of the transmission rod 1 (5) can push the transmission rod 2 (51) to move horizontally. The material storage housing (11) is slidably connected to a support block (52) for supporting the guide sleeve (9), and the transmission rod 2 (51) can push the support block (52) to move downward.

4. A welding device for automobile seats according to claim 3, characterized in that: A second return spring (53) is connected between the material storage housing (11) and the support block (52), and the second return spring (53) can push the support block (52) upwards. The upward movement of the support block (52) can push the fixed plate (42) away from the guide sleeve (9).

5. A welding device for automobile seats according to claim 4, characterized in that: The upper surface of the support block (52) is provided with a transmission slope 1 (521), and the lower bottom surface of the fixing plate (42) is provided with a transmission slope 2 (421) capable of abutting against the transmission slope 1 (521).

6. The welding device for automobile seats according to claim 1, characterized in that: The material storage housing (11) is vertically provided with a slide groove (111), the outer side surface of the support plate (3) is fixedly connected with a slide block (112), and the slide block (112) is slidably connected to the slide groove (111).

7. A welding device for automobile seats according to claim 6, characterized in that: A guide rod (113) is fixedly connected inside the slide groove (111), the slider (112) is slidably sleeved on the guide rod (113), a return spring (114) is sleeved on the guide rod (113), and the return spring (114) is located between the slider (112) and the inner bottom surface of the slide groove (111).

8. The welding device for automobile seats according to claim 1, characterized in that: The inner side surface of the V-shaped block (22) and the inner side surface of the V-shaped groove (14) are both rotatably connected to support rollers (6), and the support rollers (6) are in contact with the outer side surface of the U-shaped pipe rack (8).

9. The welding device for automobile seats according to claim 1, characterized in that: A locking groove (23) is provided on the outer side surface of the rotating frame (2); a locking plate (7) capable of engaging with the locking groove (23) is hingedly connected to the material storage shell (11); the locking plate (7) is engaged with the locking groove (23) to limit the rotation of the rotating frame (2); and a return torsion spring (71) is connected between the material storage shell (11) and the locking plate (7).

10. A welding device for automobile seats according to claim 9, characterized in that: An upper chamber (115) and a lower chamber (116) are provided in the material storage housing (11), hydraulic oil is located in the upper chamber (115) and the lower chamber (116), the material pressing member (12) is slidably connected to the inner side surface of the lower chamber (116), a transmission pipe (72) is connected between the upper chamber (115) and the lower chamber (116), and a transmission member (73) capable of limiting the rotation of the locking plate (7) is slidably connected in the upper chamber (115).

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