A welding device for automobile seats

Abstract

The present invention provides a welding device for an automotive seat, which relates to the technical field of seat welding and includes: a support base; a storage housing is fixedly connected to the upper surface of the support base, hydraulic oil is filled inside the storage housing, a pressing member is slidably connected to the storage housing, a first return spring is sleeved on the pressing member, a V-shaped groove is formed on the upper surface of the pressing member, a rotating frame is hinged to the upper surface of the storage housing through a support rod, a linear driver is fixedly connected to the upper surface of the rotating frame, and a V-shaped block is fixedly connected to the driving shaft of the linear driver; a support plate for supporting a straight pipe is slidably connected to the outer side surface of the storage housing, a transmission cavity is formed inside the support plate, an oil transmission pipe is communicated between the transmission cavity and the storage housing, a first positioning plate for positioning the straight pipe is slidably connected to the transmission cavity, and a second positioning plate for positioning a guide sleeve is arranged on the upper surface of the storage housing. The present invention has the effect of reducing the angular error between the guide sleeve and the reference surface.

Description

Technical Field

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

[0002] Automobile seat welding refers to the process of fixing the seat skeleton into shape through welding technology. The automobile seat skeleton is the basic support structure of the seat, and welding is the key process for firmly connecting each component of the skeleton. Through welding, the stability and durability of the seat skeleton are ensured, thus providing a safe and comfortable riding experience for drivers and passengers.

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

[0004] In view of the above related technologies, since the U-shaped pipe rack will have a springback phenomenon after being bent and formed, there will be dimensional errors during the extrusion process of the welding surface. Therefore, when processing the welding surface, the positioning of the U-shaped pipe rack has dimensional errors, and the error accumulation increases the error of the angle between the reference plane formed by the central axes of the two straight pipes and the welding surface.

[0005] During workshop production, 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 axes of the two straight pipes of the welded product and the upper surface of the guide sleeve, increasing the angle error of the seat headrest and having a negative impact on the quality of the automobile seat. Summary of the Invention

[0006] In view of this, the present invention provides a welding device for automobile seats, aiming to solve the problem that placing the U-shaped pipe rack on the guide sleeve for welding increases the angle error between the reference plane formed by the central axes of the two straight pipes of the welded product and the upper surface of the guide sleeve.

[0007] To solve the above technical problems, the present invention provides a welding device for an automotive seat, including a support base; a storage housing is fixedly connected to the upper surface of the support base, hydraulic oil is filled inside the storage housing, a pressure member for extruding the hydraulic oil is slidably connected to the storage housing, a first return spring is sleeved on the pressure member, a V-shaped groove is formed on the upper surface of the pressure member, a rotating frame is hinged to the upper surface of the storage housing through a support rod, a linear actuator is fixedly connected to the upper surface of the rotating frame, and a V-shaped block for fixing a U-shaped pipe frame is fixedly connected to the drive shaft of the linear actuator; a support plate for supporting a straight pipe is slidably connected to the outer side surface of the storage housing, a transmission cavity is formed inside the support plate, an oil transmission pipe is communicated between the transmission cavity and the storage housing, a first positioning plate for positioning the straight pipe is slidably connected to the transmission cavity, and a second positioning plate for positioning a guide sleeve is arranged on the upper surface of the storage housing.

[0008] By adopting the above technical solution, the included angle between the upper surfaces of the support plate and the guide sleeve is equal to the included angle between the reference plane formed by the central axes of the two straight pipes of the target product and the guide sleeve. When the V-shaped block moves downward, on the one hand, it pushes the welding surface closer to the guide sleeve, and on the other hand, the U-shaped pipe frame pushes the pressure member downward, so that the hydraulic oil pushes the two first positioning plates to move and adjust the position of the welding surface relative to the guide sleeve in the horizontal direction. In addition, the V-shaped block cooperates with the support plate to extrude and shape the U-shaped pipe frame, calibrate the included angle between the welding surface and the reference plane, reduce the angular error between the guide sleeve and the reference plane, and is beneficial to reducing the angular error of the automotive seat headrest.

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

[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, a first transmission rod is fixedly connected to the pressure member, a second transmission rod is connected to the storage housing, the downward movement of the first transmission rod can push the second transmission rod to move horizontally, a support block for supporting the guide sleeve is slidably connected to the storage housing, and the second transmission rod can push the support block to move downward.

[0012] Optionally, a second return spring is connected between the storage housing and the support block, the second return spring can push the support block upward, and the upward movement of the support block can push the fixing plate away from the guide sleeve.

[0013] Optionally, a first transmission inclined surface is formed on the upper surface of the support block, and a second transmission inclined surface capable of abutting against the first transmission inclined surface is formed on the lower bottom surface of the fixing plate.

[0014] Optionally, a chute is vertically formed in the material storage housing, a slider is fixedly connected to the outer side surface of the support plate, and the slider is slidably connected to the chute.

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

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

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

[0018] Optionally, a locking groove is formed in the outer side surface of the rotating frame, a locking plate capable of engaging with the locking groove is hinged to the material storage housing, the engagement of the locking plate and the locking groove can limit the rotation of the rotating frame, and a return torsion spring is connected between the material storage housing and the locking plate.

[0019] By adopting the above technical solution, after the rotating frame drives the V-shaped block to rotate and clamp the U-shaped pipe support, the return torsion spring drives the locking plate to rotate and snap into the locking groove, so that the locking plate restricts the rotation of the rotating frame, and improves the stability of the V-shaped block clamping and fixing the U-shaped pipe support.

[0020] Optionally, an upper chamber and a lower chamber are formed in the material storage housing, hydraulic oil is located in the upper chamber and the lower chamber, the pressing member is slidably connected to the inner side surface of the lower chamber, a transmission pipe is communicated between the upper chamber and the lower chamber, and a transmission member capable of restricting 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 member to move and abut against the side wall of the locking plate, so as to restrict the reverse rotation of the locking plate and disengagement from the locking groove, reduce the operation of the processing personnel accidentally touching and pushing the locking plate to disengage from the locking groove during the welding process, and improve the stability of the locking plate locking the rotating frame.

[0022] In summary, compared with the prior art, the present invention includes at least one of the following beneficial technical effects:

[0023] 1. The angle between the upper surface of the support plate and the guide sleeve is equal to the angle between the reference plane formed by the central axes of the two straight pipes of the target product and the guide sleeve. As the V-shaped block moves downward, on one hand, it pushes the welding surface closer to the guide sleeve. On the other hand, the U-shaped pipe support pushes the pressing member downward, causing the hydraulic oil to push the two positioning plates to move and adjust the position of the welding surface relative to the guide sleeve in the horizontal direction. In addition, the V-shaped block cooperates with the support plate to extrude and shape the U-shaped pipe support, calibrate the angle between the welding surface and the reference plane, reduce the angular error between the guide sleeve and the reference plane, and is beneficial to reducing the angular error of the car seat headrest.

[0024] 2. The hydraulic oil in the upper chamber pushes the transmission member to move and abut against the side wall of the locking plate, thereby restricting the reverse rotation of the locking plate out of the locking groove, reducing the operation of the processing personnel accidentally touching and pushing the locking plate out of the locking groove during the welding process, and improving the stability of the locking plate locking the rotating frame. Description of the Drawings

[0025] Figure 1 It is a top view of the U-shaped pipe support according to an embodiment of the present invention;

[0026] Figure 2 It is a cross-sectional view of the U-shaped pipe support according to an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the overall structure according to an embodiment of the present invention;

[0028] Figure 4 It is a schematic diagram of the internal structure of the storage housing according to an embodiment of the present invention;

[0029] Figure 5 It is a cross-sectional view of the storage housing, the pressing member and the rotating frame according to an embodiment of the present invention;

[0030] Figure 6 It is a cross-sectional view of the storage housing, the pressing member and the rotating frame from another perspective according to an embodiment of the present invention;

[0031] Figure 7 It is a cross-sectional view of the slider and the guide rod according to an embodiment of the present invention.

[0032] Description of the reference numerals: 1. Support base; 11. Storage housing; 111. Chute; 112. Slide block; 113. Guide rod; 114. Third return spring; 115. Upper chamber; 116. Lower chamber; 12. Pressing member; 121. Pressing plate; 122. Connecting rod; 123. Bearing plate; 13. First return spring; 14. V-shaped groove; 15. Support rod; 2. Rotating frame; 21. Linear actuator; 22. V-shaped block; 23. Locking groove; 3. Support plate; 31. Transmission cavity; 32. Oil delivery pipe; 33. First positioning plate; 4. Second positioning plate; 41. Slide rod; 42. Fixed plate; 421. Second transmission inclined surface; 43. Extrusion spring; 5. First transmission rod; 51. Second transmission rod; 511. Fourth transmission inclined surface; 512. Fifth transmission inclined surface; 52. Support block; 521. First transmission inclined surface; 522. Sixth transmission inclined surface; 53. Second return spring; 54. Third transmission inclined surface; 6. Support roller; 7. Locking plate; 71. Return torsion spring; 72. Transmission pipe; 73. Transmission member; 8. U-shaped pipe rack; 81. Bent pipe; 811. Welding surface; 82. Straight pipe; 9. Guide sleeve. Detailed implementation manners

[0033] For the purpose of making the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the following will combine the Figures 1-7 of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention.

[0034] This embodiment provides a welding device for an automotive seat. Referring to Figure 1 and Figure 2 , the U-shaped pipe rack 8 is composed of a bent pipe 81 and a straight pipe 82. There are two straight pipes 82, which are respectively fixedly connected to both ends of the bent pipe 81. The outer side surface 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 plane formed by the central axes of the two straight pipes 82 is used as a reference plane.

[0035] Referring to Figure 3 , Figure 4 and Figure 5, A welding device for an automobile seat includes a support base 1, a material storage housing 11, a V-shaped block 22 for fixing a bent pipe 81, a support plate 3 for supporting a straight pipe 82, and a second positioning plate 4 for positioning a guide sleeve 9. The support base 1 is placed on a horizontal plane, and the material storage housing 11 is fixedly connected to the upper surface of the support base 1. The interior of the material storage housing 11 is filled with hydraulic oil. A pressure-applying member 12 is vertically slidably connected to the material storage housing 11, and the downward movement of the pressure-applying member 12 can squeeze the hydraulic oil. The pressure-applying member 12 is composed of a pressure plate 121, a connecting rod 122, and a bearing plate 123. The connecting rod 122 is fixedly connected between the pressure plate 121 and the bearing plate 123. The pressure plate 121 is slidably connected to the inner side surface of the material storage housing 11. A first return spring 13 is sleeved on the connecting rod 122, and the first return spring 13 is located between the material storage housing 11 and the bearing plate 123.

[0036] Referring to Figure 3 , Figure 4 and Figure 5 , a support plate 3 for supporting the straight pipe 82 is slidably connected to the outer side surface of the material storage housing 11. The included angle between the upper surfaces of the support plate 3 and the guide sleeve 9 is equal to the included angle between the reference plane of the straight pipe 82 and the guide sleeve 9 in the target product. A transmission cavity 31 is formed in the support plate 3. An oil delivery pipe 32 is fixedly connected between the transmission cavity 31 and the material storage housing 11. Two first positioning plates 33 are slidably connected to the transmission cavity 31. The two first positioning plates 33 are located on both sides of the V-shaped block 22. The two first positioning plates 33 can position the straight pipe 82 when moving away from each other in the opposite direction.

[0037] Referring to Figure 4 , Figure 5 and Figure 6 , a V-shaped groove 14 for placing a U-shaped pipe rack 8 is formed on the upper surface of the bearing plate 123. Two support rods 15 are vertically and fixedly connected to the upper surface of the material storage housing 11. A rotating frame 2 is hinged between the two support rods 15. A linear actuator 21 is fixedly connected to the upper surface of the rotating frame 2. A V-shaped block 22 for downwardly squeezing the U-shaped pipe rack 8 is fixedly connected to the driving shaft of the linear actuator 21. Four second positioning plates 4 are arranged on the upper surface of the material storage housing 11. The four second positioning plates 4 are evenly distributed on 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 second positioning plates 4.

[0038] When welding work needs to be carried out, the processing personnel place the two guide sleeves 9 between the two second positioning plates 4 respectively. Then, the processing personnel 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 frame 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 rack 8. The V-shaped block 22 cooperates with the V-shaped groove 14 to clamp the U-shaped pipe rack 8. The linear actuator 21 pushes the V-shaped block 22 downward to 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, and the U-shaped pipe rack 8 squeezes the support plate 3 downward.

[0039] At the same time, the U-shaped pipe rack 8 pushes the bearing plate 123 downward. The bearing plate 123 pushes the pressure plate 121 downward through the connecting rod 122 to squeeze the hydraulic oil in the storage housing 11. The hydraulic oil enters the transmission cavity 31 through the oil pipe 32 and squeezes the two positioning plates 33 to move away from each other. When the positioning plate 33 moves, it pushes the straight pipe 82 to move, and the bent pipe 81 moves with the straight pipe 82 to be centered, so that the welding surface 811 coincides with the upper surface of the guide sleeve 9. The operator uses a welding torch 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 first return spring 13 pushes the pressing member 12 to move upward. The hydraulic oil in the transmission cavity 31 flows back to the storage housing 11 through the oil pipe 32, and the operator flips the rotating frame 2 to take out the U-shaped pipe rack 8.

[0040] The angle between the upper surface of the support plate 3 and the guide sleeve 9 is equal to the angle between the reference plane of the straight pipe 82 of the target product and the guide sleeve 9. When the V-shaped block 22 moves downward, on the one hand, it pushes the welding surface 811 closer to the guide sleeve 9. On the other hand, the U-shaped pipe rack 8 pushes the pressing member 12 downward, so that the hydraulic oil pushes the two positioning plates 33 to move to adjust the position of the welding surface 811 relative to the guide sleeve 9 in the horizontal direction. In addition, the V-shaped block 22 cooperates with the support plate 3 to extrude and shape the U-shaped pipe rack 8, and calibrate the angle between the welding surface 811 and the reference plane, reducing the angular error between the guide sleeve 9 and the reference plane, which is beneficial to reducing the angular error of the car seat headrest.

[0041] Refer to Figure 3 and Figure 7 , the storage housing 11 is vertically provided with a chute 111. A guide rod 113 is vertically and fixedly connected in the chute 111. The outer side of the support plate 3 is fixedly connected with a slider 112 that is slidably sleeved on the guide rod 113. A third return spring 114 is sleeved on the guide rod 113, and the third return 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 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 downward. The slider 112 moves downward with the support plate 3 to compress the third return spring 114. When the operator removes the welded U-shaped pipe rack 8, the third return spring 114 pushes the slider 112 and the support plate 3 to move upward to reset. When the support plate 3 moves vertically, the guide rod 113 is beneficial to maintaining the accuracy of the angle between the support plate 3 and the upper surface of the guide sleeve 9.

[0042] Refer toFigure 4 , a plurality of support rollers 6 are rotatably connected to the inner sides of the V-shaped block 22 and the inner side of the V-shaped groove 14, and the support rollers 6 are in contact with the outer side of the U-shaped pipe support 8. When the positioning plate 33 pushes the straight pipe 82 to move horizontally, the U-shaped pipe support 8 drives the support rollers 6 to rotate, thereby converting the sliding friction between the inner side of the V-shaped block 22 and the U-shaped pipe support 8 and the sliding friction between the inner side of the V-shaped groove 14 and the U-shaped pipe support 8 into rolling friction, reducing the wear caused by the horizontal movement of the U-shaped pipe support 8 when positioning the welding surface 811 and the guide sleeve 9.

[0043] Refer to Figure 4 and Figure 6 , on one side of the V-shaped block 22, a slide bar 41 is slidably connected to the relative inner sides of the two positioning plates 4. One end of the slide bar 41 away from the positioning plate 4 is fixedly connected to a fixing plate 42. The guide sleeve 9 is placed between the two fixing plates 42, and the fixing plate 42 is in contact with the outer side of the guide sleeve 9. A compression spring 43 is sleeved on the slide bar 41. The compression spring 43 pushes the two fixing plates 42 to move closer to each other to fasten and position the guide sleeve 9.

[0044] Refer to Figure 4 and Figure 6 , two first transmission rods 5 are fixedly connected to the lower bottom surface of the bearing plate 123. The two first transmission rods 5 are respectively located on both sides of the V-shaped block 22. The lower bottom surface of the first transmission rod 5 is a third transmission inclined surface 54. A second transmission rod 51 is horizontally slidably connected to the storage housing 11. Transmission inclined surfaces 511 and 512 are respectively formed at both ends of the second transmission rod 51, and the fourth transmission inclined surface 511 can be in contact with the third transmission inclined surface 54. A support block 52 for supporting the guide sleeve 9 is vertically slidably connected to the storage housing 11. The support block 52 is located below the fixing plate 42. There are two second transmission rods 51 and two support blocks 52, and they are distributed on both sides of the V-shaped block 22. A sixth transmission inclined surface 522 capable of being in contact with the fifth transmission inclined surface 512 is formed on the side wall of the support block 52. A first transmission inclined surface 521 is formed on the upper surface of the support block 52, and a second transmission inclined surface 421 capable of being in contact with the first transmission inclined surface 521 is formed on the lower bottom surface of the fixing plate 42. A second return spring 53 is connected between the storage housing 11 and the support block 52. The second return spring 53 can push the support block 52 upward, and the upward movement of the support block 52 can push the fixing plate 42 away from the guide sleeve 9.

[0045] The reset spring two 53 pushes the support block 52 to move upward. The support block 52 pushes the two fixed plates 42 to move away from each other through the first transmission inclined surface 521 and the second transmission inclined surface 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 placing the guide sleeve 9 on the support block 52. At this time, the compression spring 43 is compressed. When the linear actuator 21 pushes the blank holder 12 to move downward through the V-shaped block 22, the bearing plate 123 moves downward synchronously with the blank holder 12. The first transmission rod 5 moves downward with the bearing plate 123 and pushes the second transmission rod 51 to move horizontally and close to the support block 52 through the third transmission inclined surface 54 and the fourth transmission inclined surface 511. The second transmission rod 51 pushes the support block 52 to move downward through the fifth transmission inclined surface 512 and the sixth transmission inclined surface 522. At this time, the reset spring two 53 is compressed. The support block 52 moves downward, causing the first transmission inclined surface 521 to disengage from the second transmission inclined surface 421. At this time, the compression spring 43 pushes the two fixed plates 42 to approach each other to fasten and position the guide sleeve 9.

[0046] After welding is completed, the linear actuator 21 drives the V-shaped block 22 to move upward. The reset spring one 13 pushes the bearing plate 123 to move upward. The first transmission rod 5 moves upward with the bearing plate 123 and disengages from the second transmission rod 51. At this time, the second transmission rod 51 stops pushing the support block 52. The reset spring two 53 pushes the support block 52 to move upward. The support block 52 pushes the two fixed plates 42 to move away from each other again through the first transmission inclined surface 521 and the second transmission inclined surface 421, so that the fixed plates 42 are separated from the guide sleeve 9, facilitating the processing personnel to take out the welded U-shaped pipe rack 8.

[0047] In summary, when the processing personnel place the guide sleeve 9 between the fixed plates 42 and the V-shaped block 22 pushes the U-shaped pipe rack 8 downward, the fixed plates 42 approach each other to fasten and position the guide sleeve 9. When the V-shaped block 22 moves upward and disengages from the U-shaped pipe rack 8, the fixed plates 42 move away from each other and are separated from the guide sleeve 9, enabling the processing personnel to take out the welded U-shaped pipe rack 8.

[0048] Refer to Figure 5 As shown in the figure, a locking groove 23 is formed on the outer side surface of the rotating frame 2. The storage housing 11 is hinged with a locking plate 7 that can engage with the locking groove 23. The engagement of the locking plate 7 with the locking groove 23 can limit the counterclockwise rotation of the rotating frame 2. A reset torsion spring 71 is connected between the 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 restricts the counterclockwise rotation of the rotating frame 2, improving the stability of the V-shaped block 22 clamping and fixing the U-shaped pipe rack 8.

[0049] Refer to Figure 5, an upper chamber 115 and a lower chamber 116 are provided in the storage housing 11. The hydraulic oil is located in the upper chamber 115 and the lower chamber 116. The pressing member 12 is slidably connected to the inner side surface of the lower chamber 116. A transmission pipe 72 is communicated between the upper chamber 115 and the lower chamber 116. The transmission pipe 72 extends into the bottom of the lower chamber 116. A transmission member 73 that can limit the rotation of the locking plate 7 is slidably connected in the upper chamber 115. When the linear actuator 21 pushes the pressing member 12 to move downward through the V-shaped block 22, the pressing plate 121 squeezes the hydraulic oil in the lower chamber 116 to enter the upper chamber 115 through the transmission pipe 72. The hydraulic oil in the upper chamber 115 pushes the transmission member 73 to move and abut against the side wall of the locking plate 7, thereby restricting the locking plate 7 from rotating counterclockwise and disengaging from the locking groove 23, reducing the operation of the processing personnel accidentally touching and pushing 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.

[0050] The implementation principle of a welding device for an automotive seat according to an embodiment of the present invention is as follows: The processing personnel respectively place two guide sleeves 9 between two positioning plates II 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, and the reset torsion spring 71 drives the locking plate 7 into the locking groove 23. The linear actuator 21 pushes the V-shaped block 22 to move downward to press the U-shaped pipe rack 8. The V-shaped block 22 continues to move downward to push the U-shaped pipe rack 8 to move downward. The U-shaped pipe rack 8 pushes the pressing member 12 to move downward to squeeze the hydraulic oil, and the hydraulic oil enters the transmission cavity 31 through the oil delivery pipe 32 to squeeze the two positioning plates I 33 to move away from each other in the horizontal direction to make the U-shaped pipe rack 8 move to the center.

[0051] When the linear actuator 21 pushes the pressing member 12 to move downward through the V-shaped block 22, the bearing plate 123 moves downward synchronously with the pressing member 12. The first transmission rod 5 moves downward with the bearing plate 123 to push the second transmission rod 51 to move horizontally. The second transmission rod 51 pushes the support block 52 to move downward to disengage from the fixed plate 42, and the compression spring 43 is squeezed to push the two fixed plates 42 to approach each other to fasten and position the guide sleeve 9. The processing personnel use a welding torch to weld the guide sleeve 9 to the welding surface 811. After welding is completed, the linear actuator 21 drives the V-shaped block 22 to move upward, the fixed plate 42 moves away from the guide sleeve 9, the first return spring 13 pushes the pressing member 12 to move upward, and the hydraulic oil in the transmission cavity 31 flows back to the storage housing 11 through the oil delivery pipe 32. The processing personnel flip the rotating frame 2 to take out the welded U-shaped pipe rack 8.

[0052] In addition, it should be noted that in the description of the present invention, the terms "installation", "connection", and "connection" should be understood in a broad sense.

[0053] The above are the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A welding device for a car seat, comprising a support seat, characterized in that: The upper surface of the support seat is fixedly connected with a material storage shell, the interior of the material storage shell is filled with hydraulic oil, the material storage shell is slidably connected with a material pressing piece for squeezing the hydraulic oil, a return spring is sleeved on the material pressing piece, a V-shaped groove is opened on the upper surface of the material pressing piece, the upper surface of the material storage shell is hinged with a rotating frame through a support rod, the upper surface of the rotating frame is fixedly connected with a linear driver, and the driving shaft of the linear driver is fixedly connected with a V-shaped block for fixing the U-shaped pipe rack; The outer side surface of the material storage shell is slidably connected with a support plate for supporting the straight pipe, and a transmission cavity is opened in the support plate, and an oil pipeline is connected between the transmission cavity and the material storage shell, and the transmission cavity is slidably connected with two positioning plates 1 for positioning the straight pipe, and the two positioning plates 1 are located on both sides of the V-shaped block, and the two positioning plates 1 move away from each other to position the straight pipe; the upper surface of the material storage shell is provided with a positioning plate 2 for positioning the guide sleeve, and the guide sleeve is placed between the two positioning plates 2; the opposite inner sides of the two positioning plates 2 are slidably connected with a fixing plate through a sliding rod, and the fixing plate abuts against the outer side surface of the guide sleeve, and the sliding rod is provided with an extrusion spring; the angle between the support plate and the upper surface of the guide sleeve is equal to the angle between the reference plane of the straight pipe and the guide sleeve, and the surface formed by the central axes of the two straight pipes is the reference plane; The inner side surface of the V-shaped block and the inner side surface of the V-shaped groove are both rotatably connected with support rollers, and the support rollers abut against the outer side surface of the U-shaped pipe rack; The material pressing piece is fixedly connected with a transmission rod 1, and the material storage housing is connected with a transmission rod 2. The downward movement of the transmission rod 1 can push the transmission rod 2 to move horizontally. The material storage housing is slidably connected with a support block for supporting the guide sleeve, and the transmission rod 2 can push the support block to move downward; A second return spring is connected between the material storage shell and the support block. The second return spring can push the support block upward, and the support block can push the fixed plate out of the guide sleeve when it moves upward.

2. A welding device for automobile seats according to claim 1, characterized in that: The upper surface of the support block is provided with a transmission inclined surface 1, and the lower bottom surface of the fixed plate is provided with a transmission inclined surface 2 which can abut against the transmission inclined surface 1.

3. A welding device for automobile seats according to claim 1, characterized in that: 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.

4. A welding device for automobile seats according to claim 3, characterized in that: 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.

5. The welding device for automobile seats according to claim 1, characterized in that: 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 reset torsion spring is connected between the material storage shell and the locking plate.

6. A welding device for automobile seats according to claim 5, characterized in that: 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.

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