A welding device for automobile sleeper frame

Abstract

The present invention discloses a welding device for a car berth frame, mainly relating to the technical field of welding devices. It comprises a first movable plate slidably arranged on a first fixed plate, and a second movable plate slidably arranged on a second fixed plate, the first movable plate is slidably connected with a first positioning block, a second positioning block, a third positioning block and a fourth positioning block, and also comprises a frame slidably arranged on the second movable plate, a first L-shaped block slidably arranged on the frame, a first adjustment plate rotatably arranged on the first L-shaped block, a second L-shaped block slidably arranged on the frame, and a second adjustment plate rotatably arranged on the second L-shaped block, the first adjustment plate and the second adjustment plate are respectively provided with a first slider and a second slider, and the first slider and the second slider are provided with a first welding head and a second welding head. The beneficial effects of the present invention are: solving the problem of low efficiency of welding fixing sleeves, reducing the labor intensity of workers, and improving the production efficiency of car berth frames.

Description

Technical Field

[0001] The invention relates to the technical field of welding devices, in particular to a welding device used for a sleeper frame of an automobile. Background Art

[0002] The frame of a sleeper car is one of the parts of a car, which is installed in the cab of the car. Placing elastic pads on the frame can facilitate the rest of the personnel. When welding the frame of a sleeper car, a welding device is required to complete the welding.

[0003] Since the traditional skeleton frame and cross braces are generally directly welded into a whole, when a cross brace is damaged, it is not convenient for subsequent repair and replacement. In order to solve the above problem, Figure 1 As shown, there are currently several grooves set on the frame, and fixing sleeves are pre-welded in the grooves for supporting and detachably installing the cross braces, so as to facilitate the subsequent removal of damaged cross braces from the vertical braces and the repair and replacement of the damaged cross braces.

[0004] In the process of welding the fixing sleeves on the frame, workers are required to weld the fixing sleeves on the frame one by one, which affects the efficiency of welding the fixing sleeves to a certain extent. Summary of the invention

[0005] The purpose of the present invention is to provide a welding device for a car berth frame, so as to solve the problem of low efficiency in welding a fixing sleeve on the frame, reduce the labor intensity of workers, and improve the production efficiency of the car berth frame.

[0006] In order to achieve the above-mentioned purpose, the invention is implemented through the following technical solutions:

[0007] A welding device for a car sleeper frame, comprising an auxiliary tooling for fixing a frame, and a plurality of welding mechanisms used in conjunction with the frame and a fixing sleeve, wherein the auxiliary tooling comprises a first fixing plate, and a first movable plate vertically slidably arranged on the first fixing plate, wherein the first movable plate contacts the bottom of the frame, and the two ends of the first movable plate are respectively connected with a first positioning block and a second positioning block in a transverse sliding manner, and the two ends of the frame are respectively in contact with the first positioning block and the second positioning block, and the two sides of the first movable plate are respectively connected with a third positioning block and a fourth positioning block in a transverse sliding manner, and the two sides of the frame are respectively in contact with the third positioning block and the fourth positioning block;

[0008] It also includes a second fixed plate and a second movable plate slidably arranged on the second fixed plate vertically, the second movable plate is connected to a frame by transverse sliding along the upper side, the welding mechanism includes two groups of transverse welding units and two groups of longitudinal welding units, the transverse welding unit includes a first L-shaped block slidably arranged on the frame along the transverse direction, and a first adjusting plate rotatably arranged on the first L-shaped block, the longitudinal welding unit includes a second L-shaped block slidably arranged on the frame along the longitudinal direction, and a second adjusting plate rotatably arranged on the second L-shaped block, the first adjusting plate and the second adjusting plate are slidably connected with a first slider and a second slider respectively, and the first slider and the second slider are provided with a first welding head and a second welding head used in conjunction with the frame and the fixed sleeve.

[0009] Furthermore, the frame is rotatably connected to a first swing arm and a second swing arm, the two ends of the first swing arm and the second swing arm are respectively rotatably connected to a first connecting block and a second connecting block, and the ends of the first connecting block and the second connecting block are respectively rotatably connected to the first L-shaped block and the second L-shaped block.

[0010] Furthermore, the frame is rotatably connected to a rotating shaft fixedly connected to the first swing arm, the rotating shaft is movably connected to the first swing arm, the first swing arm is slidably connected to a connecting key, the second swing arm is provided with an annular groove, the end of the connecting key is provided with a protrusion rotatably connected to the annular groove, the second swing arm is respectively provided with a plurality of first connecting grooves and second connecting grooves, the protrusions are plug-matched with the first connecting groove and the second connecting groove in sequence, the frame is provided with a third connecting groove plug-matched with the connecting key, the second swing arm is provided with a first cylinder, the movable end of the first cylinder is rotatably connected to a third connecting block, and the end of the third connecting block is rotatably connected to the connecting key.

[0011] A driven wheel is provided at the end of the rotating shaft, and a plurality of first columns are provided on the driven wheel. The rotating shaft also includes a first motor, and a first driving wheel is provided at the movable end of the first motor. First arc blocks and first shift rods are respectively provided on both sides of the first driving wheel. The first arc blocks are in contact with the plurality of first columns at the same time and limit the rotation of the driven wheel on the frame. The first shift rods are in contact with the plurality of first columns in turn and limit the rotation of the driven wheel on the frame.

[0012] Furthermore, the ends of the first adjustment plate and the second adjustment plate are rotatably connected to a fourth connecting block, the first L-shaped block and the second L-shaped block are respectively slidably connected to a third slider, the end of the third slider is rotatably connected to the fourth connecting block, the third slider is provided with a plurality of arc grooves, a shifting groove is provided between two adjacent arc grooves, and also includes a second motor respectively arranged on the first L-shaped block and the second L-shaped block, the movable end of the second motor is provided with a second driving wheel, the upper and lower sides of the second driving wheel are respectively provided with second arc blocks contacting the arc groove, and the left and right sides of the second driving wheel are respectively provided with shifting blocks contacting the shifting groove.

[0013] Furthermore, there are two first movable plates, and the first movable plates are provided with guide rods slidably connected to the first fixed plates, and the first movable plates are rotatably connected to a plurality of rollers in contact with the frame, and the first fixed plates are symmetrically slidably connected to the first slide plate, and a plurality of fifth connecting blocks are provided between the first slide plate and the first movable plates, and the two ends of the fifth connecting blocks are rotatably connected to the first slide plate and the first movable plates respectively, and the first fixed plates are provided with a third motor, and the movable end of the third motor is provided with a driving gear, and one end of the first slide plates is provided with a fixed rack, and the other end of the first slide plates is slidably connected to a movable rack, and the driving gear is meshed with the fixed rack and the movable rack at the same time.

[0014] Furthermore, a T-shaped block is provided at the end of the other first slide plate, an adjusting block slidably connected to the T-shaped block is provided at the end of the movable rack, a limiting block is symmetrically slidably connected to the T-shaped block, the adjusting block is provided with a plurality of limiting grooves plug-inly matched with the limiting block, and inclined surfaces contacting the limiting grooves are respectively provided on both sides of the two limiting blocks, a top screw is threadedly connected to the T-shaped block, and a conical surface contacting the limit block is provided at the end of the top screw.

[0015] Furthermore, the ends of the two first movable plates are respectively slidably connected with a fourth slider, the first positioning block is fixedly arranged at the end of one of the fourth sliders, the other fourth slider is provided with a second cylinder, the second positioning block is fixedly arranged at the movable end of the second cylinder, the fourth slider is provided with a plurality of second columns, the two first movable plates are respectively provided with a fourth motor, the movable end of the fourth motor is provided with a third driving wheel, the two sides of the third driving wheel are respectively provided with a third arc block and a second lever, the third arc block contacts with a plurality of second columns at the same time and limits the fourth slider from sliding on the first movable plate, the second lever contacts with a plurality of second columns in turn and drives the fourth slider to slide on the first movable plate.

[0016] Furthermore, a second slide plate is longitudinally slidably connected to the upper portion of the first movable plate, the third positioning block is fixedly arranged at one end of the second slide plate, a third cylinder is arranged at the other end of the second slide plate, and the fourth positioning block is arranged at the movable end of the third cylinder; a push rod is arranged at one end of the second slide plate, a third column is arranged at the end of the push rod, a fifth motor is arranged on the first movable plate, a fourth driving wheel is arranged at the movable end of the fifth motor, and a vortex groove which is in sliding contact with the third column is arranged on the fourth driving wheel.

[0017] Furthermore, a fourth cylinder is provided on the second fixed plate, a movable end of the fourth cylinder is connected to the second movable plate, a sixth motor is provided on the second movable plate, and a screw is rotatably connected thereto, a movable end of the sixth motor is connected to the screw, and a sixth connecting block threadedly connected to the screw is provided on the frame.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. When it is necessary to weld the frame of a sleeper car, several fixing sleeves are placed in the grooves provided on the frame in advance, and then the frame is placed on the first movable plate, and the first movable plate is slid on the first fixing plate to drive the frame to slide vertically, thereby compensating for the deviation of frames of different heights to the reference point; then the first positioning block and the third positioning block are slid on the first movable plate, and the reference points of the frame on the X-axis and Y-axis on the first movable plate are adjusted respectively, until the reference point of the welding device corresponds to the theoretical center point of the first fixing sleeve, thereby compensating for the deviation of the distance from the center point of the first fixing sleeve to the reference edge of the frame, so that the weld formed during the welding process is in the specified position, improving the quality of welding the shaft fixing sleeve on the frame, and thus improving the overall stability of the sleeper car frame after production;

[0020] Then, the frame is moved on the first movable plate so that its two reference sides are in contact with the first positioning block and the third positioning block respectively, and then the first positioning block and the third positioning block are slid on the first movable plate so that they are in contact with the other two side edges of the frame respectively, so that frames of different types are fixed on the first movable plate, and there is no need to separately set up auxiliary tooling of different types for clamping frames of different types, thereby reducing the cost required for producing the welding device;

[0021] 2. The first L-shaped block and the second L-shaped block slide on the frame to drive the first welding head and the second welding head to slide on the frame, and the distance between the first welding head and the second welding head and the center point of the fixing sleeve when working is adjusted. Then, the first adjustment plate and the second adjustment plate rotate on the first L-shaped block and the second L-shaped block respectively to adjust the welding angle of the welding head, so as to ensure that the weld formed by the welding mechanism stably falls on the connection between the fixing sleeve and the frame, thereby improving the quality of welding different types of automobile sleeper frames, and adapting to fixing sleeves of different external dimensions, without the need to customize different types of welding devices according to needs, thereby reducing the cost required for producing welding devices;

[0022] After adjusting the angle and position of the first welding head and the second welding head, the second movable plate slides downward on the second fixed plate to drive several welding mechanisms on the frame to move downward, so that several first welding heads and several second welding heads move to the connection between the frame and the fixed sleeve, and the first slider and the second slider slide on the first adjustment plate and the second adjustment plate respectively, so that the first welding head and the second welding head move along the connection between the frame and the fixed sleeve respectively, and form a uniform weld, so that several fixed sleeves are welded to the frame, and then the second movable plate slides upward on the second fixed plate to drive several welding mechanisms on the frame to move upward, so that several welding mechanisms withdraw from the working area, and then the frame is slid on the second movable plate, so that several welding mechanisms move to the connection between the next fixed sleeve and the frame, and the above actions are repeated, so as to realize the welding of all fixed sleeves and the frame, and there is no need to manually weld the fixed sleeves to the frame one by one, thereby reducing the labor intensity of workers and improving the production efficiency of the automobile sleeper frame;

[0023] 3. In the initial state, the first cylinder is in a fully extended state, the protrusion provided at the end of the connecting key is located in the second connecting groove, and the connecting key slides into the third connecting groove. At this time, the resistance generated by the contact between the connecting key and the first swing arm, the second swing arm and the frame will limit the rotation of the first swing arm and the second swing arm relative to the frame, so as to achieve the fixation of the position of the welding mechanism on the frame, avoid the unintentional displacement of its position caused by external force, and then ensure that the weld formed by the welding mechanism falls stably on the connection between the fixing sleeve and the frame, thereby improving the quality of the welded model car sleeper frame;

[0024] When the positions of the two groups of transverse welding units and the two groups of longitudinal welding units on the frame need to be adjusted simultaneously, the movable end is fully retracted by the first cylinder to drive one end of the third connecting block to move, thereby pulling the connecting key to move upward until the connecting key slides out of the third connecting groove, releasing the restriction on the rotation of the first swing arm and the second swing arm relative to the frame, and then the protrusion provided at the end of the connecting block enters the first connecting groove through the arc groove, so that the first swing arm and the second swing arm are connected into a whole;

[0025] Then, through the cooperation among the first motor, the first driving wheel, the first arc block, the first lever, the first column, the driven wheel and the frame, the driving shaft rotates on the frame, driving the first swing arm to rotate with the shaft, and at the same time, the torque is transmitted through the connecting key, driving the second swing arm to rotate with the first swing arm, adjusting the position of the horizontal welding unit and the vertical welding unit, ensuring that the weld formed by the welding mechanism stably falls on the connection between the fixed sleeve and the frame, and improving the quality of the welded model automobile sleeper frame; in addition, the position of the first swing arm and the second swing arm will be adjusted at the same time, and there is no need to set up an additional power device to drive the first swing arm and the second swing arm to rotate separately, further reducing the cost of manufacturing the power device and the space required for installation; each time the driving shaft rotates once, the first arc block will re-enter between the several first columns, and the resistance generated by the contact between the first column and the first arc block will limit the rotation of the driven wheel relative to the frame, avoiding the external force from accidentally driving the shaft to rotate, resulting in the change of the position of the horizontal welding unit and the vertical welding unit, thereby ensuring that the weld formed by the welding mechanism stably falls on the connection between the fixed sleeve and the frame, and improving the quality of the welded model automobile sleeper frame;

[0026] When the position of the transverse welding unit needs to be adjusted separately, the first cylinder is extended a short distance so that the protrusion enters the annular groove, so that the first swing arm can rotate relative to the connecting key, thereby adjusting the position of the transverse welding unit separately, so that the first welding head on the transverse welding unit is located at the connection between the frame and the fixing sleeve, ensuring that the weld formed by the welding mechanism stably falls on the connection between the fixing sleeve and the frame, and improving the quality of the welded model automobile sleeper frame; at the same time, the end of the connecting key re-enters the third connecting groove, limiting the rotation of the first swing arm relative to the frame, avoiding external force from accidentally driving the first swing arm to rotate together, ensuring that the weld formed by the welding mechanism stably falls on the connection between the fixing sleeve and the frame, and improving the quality of the welded model automobile sleeper frame;

[0027] 4. The third slider is driven to slide on the first L-shaped block or the second L-shaped block through the cooperation among the first L-shaped block, the second L-shaped block, the second motor, the second driving wheel, the second arc block, the third slider, the arc groove, the shifting block and the shifting groove, and then the thrust is transmitted through the third connecting block to drive the first adjustment plate and the second adjustment plate to rotate on the first L-shaped block or the second L-shaped block, so as to adjust the angle of the first welding head and the second welding head, and ensure that the weld formed by the welding mechanism stably falls on the connection between the fixed sleeve and the frame, thereby improving the quality of the welded model automobile sleeper frame; at the same time, after each time the third slider is driven to slide on the first L-shaped block or the second L-shaped block, the cooperation between the second arc block and the arc groove restricts the third slider from sliding on the first L-shaped block or the second L-shaped block, and avoids the external force from accidentally driving the first adjustment plate and the second adjustment plate to rotate on the first L-shaped block or the second L-shaped block, resulting in the change of the angle of the first welding head and the second welding head, thereby ensuring that the weld formed by the welding mechanism stably falls on the connection between the fixed sleeve and the frame, and further improving the quality of the welded model automobile sleeper frame;

[0028] 5. Through the cooperation among the third motor, the driving gear, the fixed rack and the movable rack, the two first slide plates are driven to move in opposite directions, and there is no need to separately set up a power device to drive the two first slide plates respectively, thereby further reducing the space required for the installation of the power device and the manufacturing cost required; then, through the cooperation among the fifth connecting block, the first slide plate and the first movable plate, the first movable plate is driven to slide on the first fixed plate, thereby adjusting the height of the frame after clamping, compensating for the deviation of the frames of different heights from the reference point, so that the weld formed in the welding process is in the specified position, improving the quality of the shaft fixing sleeve welded on the frame, and thus improving the overall stability of the automobile sleeper frame after production;

[0029] When there is a drop on the bottom surfaces of both sides of the frame 1, the T-shaped block can be moved relative to the adjusting block through the cooperation among the movable rack, the first slide plate, the limit block, the inclined surface, the adjusting block, the limit groove, and the T-shaped block, so as to adjust the position of one of the first slide plates, and the thrust is transmitted through the fifth connecting block provided on one of the first slide plates to drive one of the first movable plates to move up, so that a height difference is generated between it and the other first movable plate, thereby compensating for the height drop at both ends of the frame, stably fixing the frame on the auxiliary tooling, and improving the effect of subsequent welding of the frame and the fixing sleeve;

[0030] 6. When the distance from the center point of the fixing sleeve to the end of the frame changes, the fourth slider is driven to slide on the first movable plate through the cooperation between the first movable plate, the fourth motor, the third driving wheel, the third arc block, the second column and the second lever, thereby driving the first positioning blocks to move on the two first movable plates respectively, changing the reference point of the X-axis of the frame on the first movable plate until the reference point of the welding device corresponds to the theoretical center point of the first fixing sleeve, thereby compensating for the deviation of the distance from the center point of the different first fixing sleeves to the reference edge of the frame, so that the weld formed in the welding process is in the specified position, improving the quality of welding the shaft fixing sleeve on the frame, and thus improving the overall stability of the automobile sleeper frame after production; then, the frame is moved to make it contact with the first positioning block, and then the second positioning block is driven by the second cylinder to move on the fourth slider until the second positioning block contacts the frame, thereby fixing the frame on the auxiliary tooling;

[0031] When the distance from the center point of the fixed sleeve to the side changes, the second slide plate is slid longitudinally on the first movable plate through the cooperation between the fifth motor, the fourth drive wheel, the vortex groove, the third column, the positioning pin and the second slide plate, thereby changing the position of the third positioning block, thereby changing the reference point of the Y-axis of the frame on the first movable plate, until the reference point of the welding device corresponds to the theoretical center point of the first fixed sleeve, thereby compensating for the deviation of the distance from the center point of the first fixed sleeve to the reference edge of the frame, so that the weld formed in the welding process is in the specified position, improving the quality of welding the shaft fixing sleeve on the frame, and then improving the overall stability of the automobile sleeper frame after production; subsequently, the frame is moved to make it contact with the third positioning block, and then the fourth positioning block is driven by the third cylinder to move on the second slide plate until the fourth positioning block contacts the frame, thereby fixing the frame on the auxiliary tooling. In addition, after adjusting the position of the Y-axis reference point, the second slide plate will drive the cylinder to move together, without the need to readjust the telescopic stroke of the cylinder, further improving the efficiency of fixing frames of different models. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Attached Figure 1 It is a structural schematic diagram of the framework of the present invention.

[0033] Attached Figure 2 It is a structural schematic diagram of the cooperation between the auxiliary tooling and the welding mechanism of the present invention.

[0034] Attached Figure 3 It is a schematic structural diagram of the transverse welding unit of the present invention.

[0035] Attached Figure 4 It is a structural schematic diagram of the first welding head of the present invention.

[0036] Attached Figure 5 It is a structural schematic diagram of the rotating shaft of the present invention.

[0037] Attached Figure 6 It is a schematic structural diagram of the first driving wheel of the present invention.

[0038] Attached Figure 7 It is a structural schematic diagram of the first adjustment plate of the present invention.

[0039] Attached Figure 8 It is a structural schematic diagram of the third sliding block of the present invention.

[0040] Attached Fig. 9 It is a structural schematic diagram of the first movable plate of the present invention.

[0041] Attached Fig.10 It is a structural schematic diagram of the movable rack of the present invention.

[0042] Attached Fig.11 It is a structural schematic diagram of the T-shaped block of the present invention.

[0043] Attached Fig.12 It is a structural schematic diagram of the limit block of the present invention.

[0044] Attached Fig.13 It is a structural schematic diagram of the second positioning block of the present invention.

[0045] Attached Fig.14 It is a schematic structural diagram of the third arc block of the present invention.

[0046] Attached Fig.15 It is a schematic structural diagram of the vortex groove of the present invention.

[0047] Attached Fig.16 It is a structural schematic diagram of the roller of the present invention.

[0048] Numbers shown in the accompanying drawings:

[0049] 1. Frame; 2. Auxiliary tooling; 3. Fixed sleeve; 4. Welding mechanism; 5. First fixed plate; 6. First movable plate; 7. First positioning block; 8. Second positioning block; 9. Third positioning block; 10. Fourth positioning block; 11. Second fixed plate; 12. Second movable plate; 13. Frame; 14. Horizontal welding unit; 15. Longitudinal welding unit; 16. First L-shaped block; 17. First adjusting plate; 18. Second L-shaped block; 19. Second adjusting plate; 20. First slider; 21. Second slider; 22. First welding head; 23. Second welding head;

[0050] 24. first swing arm; 25. second swing arm; 26. first connecting block; 27. second connecting block; 28. rotating shaft; 29. ​​connecting key; 30. annular groove; 31. protrusion; 32. first connecting groove; 33. second connecting groove; 34. third connecting groove; 35. first cylinder; 36. third connecting block;

[0051] 37. driven wheel; 38. first column; 39. first motor; 40. first driving wheel; 41. first arc block; 42. first lever;

[0052] 43. fourth connecting block; 44. third sliding block; 45. arc groove; 46. shifting groove; 47. second motor; 48. second driving wheel; 49. second arc block; 50. shifting block;

[0053] 51. Guide rod; 52. Roller; 53. First slide plate; 54. Fifth connecting block; 55. Third motor; 56. Driving gear; 57. Fixed rack; 58. Movable rack; 59. T-shaped block; 60. Adjusting block; 61. Limiting block; 62. Limiting groove; 63. Inclined surface; 64. Top screw; 65. Conical surface;

[0054] 66. fourth slider; 67. second cylinder; 68. second column; 69. fourth motor; 70. third drive wheel; 71. third arc block; 72. second lever;

[0055] 73. second slide plate; 74. third cylinder; 75. push rod; 76. third column; 77. fifth motor; 78. fourth drive wheel; 79. vortex groove;

[0056] 80. Fourth cylinder; 81. Sixth motor; 82. Screw rod; 83. Sixth connecting block. DETAILED DESCRIPTION

[0057] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms fall within the scope limited by the application equally.

[0058] The present invention provides a welding device for a sleeper frame of an automobile, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 and 9 As shown, it includes an auxiliary tooling 2 for fixing the frame 1, and several groups of welding mechanisms 4 used in conjunction with the frame 1 and the fixing sleeve 3. The auxiliary tooling 2 includes a first fixing plate 5, and a first movable plate 6 vertically slidably arranged on the first fixing plate 5. The first movable plate 6 contacts the bottom of the frame 1. The first movable plate 6 slides on the first fixing plate 5 to drive the frame 1 to slide vertically, thereby compensating for the deviation of the frame 1 at different heights to the reference point, so that the weld formed during the welding process is at a specified position, improving the quality of welding the shaft fixing sleeve 3 on the frame 1, and thus improving the overall stability of the automobile sleeper frame after production;

[0059] The two ends of the first movable plate 6 are respectively connected with the first positioning block 7 and the second positioning block 8 in a lateral sliding manner, and the two ends of the frame 1 are respectively in contact with the first positioning block 7 and the second positioning block 8. The two sides of the first movable plate 6 are respectively connected with the third positioning block 9 and the fourth positioning block 10 in a lateral sliding manner, and the two sides of the frame 1 are respectively in contact with the third positioning block 9 and the fourth positioning block 10. First, by sliding the first positioning block 7 and the third positioning block 9 on the first movable plate 6, the reference points of the X-axis and the Y-axis of the frame 1 on the first movable plate 6 are respectively adjusted until the reference point of the welding device corresponds to the theoretical center point of the fixing sleeve 3, thereby compensating for the different center points of the fixing sleeve 3 to the frame 1. The deviation of the reference edge distance makes the weld formed in the welding process in the specified position, improves the quality of welding the shaft fixing sleeve 3 on the frame 1, and thus improves the overall stability of the automobile sleeper frame after production; then the frame 1 is moved on the first movable plate 6 so that its two reference edges are respectively in contact with the first positioning block 7 and the third positioning block 9, and then the first positioning block 7 and the third positioning block 9 are slid on the first movable plate 6 so that they are respectively in contact with the other two side edges of the frame 1, so that different types of frames 1 are fixed on the first movable plate 6, without the need to separately set up different types of auxiliary tooling 2 for clamping different types of frames 1, thereby reducing the cost required for producing welding devices;

[0060] The welding mechanism 4 further comprises a second fixed plate 11, and a second movable plate 12 vertically slidably arranged on the second fixed plate 11, and a frame 13 is slidably connected to the second movable plate 12 in a transverse direction. The welding mechanism 4 comprises two groups of transverse welding units 14 and two groups of longitudinal welding units 15, and the transverse welding unit 14 comprises a first L-shaped block 16 slidably arranged on the frame 13 in a transverse direction, and a first adjusting plate 17 rotatably arranged on the first L-shaped block 16, and the longitudinal welding unit 15 comprises a second L-shaped block 18 slidably arranged on the frame 13 in a longitudinal direction, and a second adjusting plate 19 rotatably arranged on the second L-shaped block 18, through the first L-shaped block 16 and the second L The L-shaped block 18 slides on the frame 13, driving the first welding head 22 and the second welding head 23 to slide on the frame 13, adjusting the distance between the first welding head 22 and the second welding head 23 and the center point of the fixing sleeve 3 when working, and then adjusting the welding angle of the welding head by rotating the first L-shaped block 16 and the second L-shaped block 18 respectively through the first adjustment plate 17 and the second adjustment plate 19, ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixing sleeve 3 and the frame 1, thereby improving the quality of welding different types of automobile sleeper frames, and adapting to different sizes of fixing sleeves 3, without the need to customize different types of welding devices according to needs, reducing the cost required for producing welding devices;

[0061] The first adjusting plate 17 and the second adjusting plate 19 are respectively slidably connected with a first slider 20 and a second slider 21. Specifically, the first adjusting plate 17 and the second adjusting plate 19 are respectively rotatably connected with screws, and the movable ends of the screws are respectively threadedly connected with the first slider 20 and the second slider 21, and the movable ends of the driving motor are connected with the screws, so as to drive the first slider 20 and the second slider 21 to slide on the first adjusting plate 17 and the second adjusting plate 19 respectively; the first slider 20 and the second slider 21 are provided with a first welding head 22 and a second welding head 23 used in conjunction with the frame 1 and the fixing sleeve 3, and the first slider 20 and the second slider 21 slide on the first adjusting plate 17 and the second adjusting plate 19 respectively, so as to drive the first welding head 22 and the second welding head 23 to slide together, so that the first welding head 22 and the second welding head 23 move along the connection between the frame 1 and the fixing sleeve 3 respectively, and form a uniform weld, so that the fixing sleeve 3 is welded to the frame 1, and there is no need to manually weld the fixing sleeve 3 to the frame 1 one by one, thereby reducing the labor intensity of the workers and improving the production efficiency of the automobile sleeper frame.

[0062] Preferably, Figure 4 and 5 As shown, the frame 13 is rotatably connected with a first swing arm 24 and a second swing arm 25, and the two ends of the first swing arm 24 and the second swing arm 25 are respectively rotatably connected with a first connecting block 26 and a second connecting block 27, and the ends of the first connecting block 26 and the second connecting block 27 are respectively rotatably connected with the first L-shaped block 16 and the second L-shaped block 18. The first swing arm 24 and the second swing arm 25 are respectively rotated on the frame 13. Since the two ends of the first connecting block 26 are respectively rotatably connected with the first swing arm 24 and the first L-shaped block 16, and the two ends of the second connecting block 27 are respectively rotatably connected with the second swing arm 25 and the second L-shaped block 18, the two groups of horizontal welding units 14 or the two groups of longitudinal welding units 15 are driven to move on the frame 13 at the same time, and there is no need to set up a separate power device for separate driving, thereby reducing the cost required for manufacturing the power device and the space required for installation.

[0063] Preferably, Figure 4 and 5As shown, the frame 13 is rotatably connected with a rotating shaft 28 fixedly connected to the first swing arm 24, so that the first swing arm 24 rotates along with the rotating shaft 28, and the rotating shaft 28 is movably connected to the first swing arm 24, so that the rotating shaft 28 can rotate relative to the second swing arm 25, and the first swing arm 24 is slidably connected with a connecting key 29, and the second swing arm 25 is provided with an annular groove 30, and the end of the connecting key 29 is provided with a protrusion 31 rotatably connected to the annular groove 30, so that the first swing arm 24 can rotate relative to the second swing arm 25, and the second swing arm 25 is respectively provided with a plurality of first connecting grooves 32 and second connecting grooves 33, which connect the first swing arm 24 and the second swing arm 2 5, so that it becomes a whole, rotates with the rotating shaft 28, the protrusion 31 is plugged and matched with the first connecting groove 32 and the second connecting groove 33 in sequence, the frame 13 is provided with a third connecting groove 34 plugged and matched with the connecting key 29, the second swing arm 25 is provided with a first cylinder 35, the movable end of the first cylinder 35 is rotatably connected with the third connecting block 36, the end of the third connecting block 36 is rotatably connected with the connecting key 29, in the initial state, the first cylinder 35 is in a fully expanded state, the protrusion 31 provided at the end of the connecting key 29 is located in the second connecting groove 33, the connecting key 29 slides into the third connecting groove 34, at this time, through the connecting key 29 and the first The resistance generated after the swing arm 24, the second swing arm 25 and the frame 13 come into contact will limit the rotation of the first swing arm 24 and the second swing arm 25 relative to the frame 13, thereby fixing the position of the welding mechanism 4 on the frame 13 and preventing its position from being accidentally driven by external force, thereby ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixing sleeve 3 and the frame 1, thereby improving the quality of the welded model automobile sleeper frame; when it is necessary to simultaneously adjust the positions of the two groups of transverse welding units 14 and the two groups of longitudinal welding units 15 on the frame 13, the first cylinder 35 is used to fully retract the active end, driving one end of the third connecting block 36 to move, thereby pulling the connecting key 29 to move upward, until Until the connecting key 29 slides out of the third connecting groove 34, the restriction on the rotation of the first swing arm 24 and the second swing arm 25 relative to the frame 13 is released, and then the protrusion 31 provided at the end of the connecting block passes through the arc groove 45 and enters the first connecting groove 32, so that the first swing arm 24 and the second swing arm 25 are connected as a whole. When the rotating shaft 28 is rotated on the frame 13, the first swing arm 24 is driven to rotate along with the rotating shaft 28. At the same time, the torque is transmitted through the connecting key 29, which drives the second swing arm 25 to rotate along with the first swing arm 24, thereby adjusting the positions of the first swing arm 24 and the second swing arm 25 at the same time, further reducing the cost required for manufacturing the power device and the space required for installation.When the position of the transverse welding unit 14 needs to be adjusted separately, the first cylinder 35 is extended a short distance so that the projection 31 enters the annular groove 30, so that the first swing arm 24 can rotate relative to the connecting key 29, thereby adjusting the position of the transverse welding unit 14 separately, so that the first welding head 22 on the transverse welding unit 14 is located at the connection between the frame 1 and the fixing sleeve 3, ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixing sleeve 3 and the frame 1, and improving the quality of the welded model automobile sleeper frame; at the same time, the end of the connecting key 29 re-enters the third connecting groove 34, limiting the rotation of the first swing arm 24 relative to the frame 13, avoiding the external force from accidentally driving the first swing arm 24 to rotate together, ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixing sleeve 3 and the frame 1, and improving the quality of the welded model automobile sleeper frame. ;

[0064] Preferably, Figure 5 and 6 As shown, a driven wheel 37 is provided at the end of the rotating shaft 28, and a plurality of first columns 38 are provided on the driven wheel 37, and a first motor 39 is also included. A first driving wheel 40 is provided at the movable end of the first motor 39, and first arc blocks 41 and first shifting rods 42 are respectively provided on both sides of the first driving wheel 40. The first arc blocks 41 are in contact with the plurality of first columns 38 at the same time, and limit the rotation of the driven wheel 37 on the frame 13. The first shifting rods 42 are in contact with the plurality of first columns 38 in sequence, and limit the rotation of the driven wheel 37 on the frame 13. The first driving wheel 40 is driven to rotate by the first motor 39, so that the first arc blocks 41 provided on the first driving wheel 40 slide out from between the plurality of first columns 38, and the restriction on the rotation of the driven wheel 37 on the frame 13 is released, and then the first arc blocks 41 are in contact with the first columns 38 through the first shifting rod 42. The force generated after the contact will drive the driven wheel 37 to rotate on the frame 13, thereby providing power for the rotation of the rotating shaft 28 on the frame 13, and then adjusting the position of the horizontal welding unit 14 and the vertical welding unit, ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixed sleeve 3 and the frame 1, and improving the quality of the welded model car sleeper frame; in addition, each time the rotating shaft 28 is driven to rotate, the first arc block 41 will re-enter between several first columns 38, and the resistance generated after the first columns 38 contact the first arc block 41 will limit the rotation of the driven wheel 37 relative to the frame 13, avoiding external force from accidentally driving the rotating shaft 28 to rotate, resulting in a change in the position of the horizontal welding unit 14 and the vertical welding unit, and then ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixed sleeve 3 and the frame 1, and improving the quality of the welded model car sleeper frame.

[0065] Preferably, Figure 7 and 8As shown, the ends of the first adjustment plate 17 and the second adjustment plate 19 are both rotatably connected to the fourth connection block 43, the first L-shaped block 16 and the second L-shaped block 18 are respectively slidably connected to the third slider 44, the end of the third slider 44 is rotatably connected to the fourth connection block 43, the third slider 44 is provided with a plurality of arc grooves 45, a shifting groove 46 is provided between two adjacent arc grooves 45, and also includes a second motor 47 respectively arranged on the first L-shaped block 16 and the second L-shaped block 18, the movable end of the second motor 47 is provided with a second driving wheel 48, the second The upper and lower sides of the driving wheel 48 are respectively provided with second arc blocks 49 in contact with the arc groove 45, and the left and right sides of the second driving wheel 48 are respectively provided with shifting blocks 50 in contact with the shifting groove 46. When it is necessary to adjust the angle of the first welding head 22 or the second welding head 23, the second driving wheel 48 is driven to rotate by the second motor 47 on the first L-shaped block 16 or the second L-shaped block 18, so that the second arc block 49 slides out of the arc groove 45 on the third slider 44, and the restriction of the third slider 44 sliding on the first L-shaped block 16 or the second L-shaped block 18 is released. Then, the shifting block 50 and the shifting block 50 are connected to the shifting block 46. The grooves 46 are in contact with each other, and the force generated after the two contact each other will drive the third slider 44 to slide on the first L-shaped block 16 or the second L-shaped block 18, and then transmit the thrust through the third connecting block 36 to drive the first adjusting plate 17 and the second adjusting plate 19 to rotate on the first L-shaped block 16 or the second L-shaped block 18, so as to adjust the angles of the first welding head 22 and the second welding head 23, and ensure that the weld formed by the welding mechanism 4 falls stably on the connection between the fixing sleeve 3 and the frame 1, thereby improving the quality of the welded model automobile sleeper frame; at the same time, each time the third slider 44 is driven on the first L-shaped block After sliding on the first L-shaped block 16 or the second L-shaped block 18, it enters the arc groove 45 through the second arc block 49. The resistance generated after the two come into contact will limit the third slider 44 from sliding on the first L-shaped block 16 or the second L-shaped block 18, avoiding external force from accidentally driving the first adjustment plate 17 and the second adjustment plate 19 to rotate on the first L-shaped block 16 or the second L-shaped block 18, causing the angle of the first welding head 22 and the second welding head 23 to change, thereby ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixing sleeve 3 and the frame 1, further improving the quality of the welded model car sleeper frame.

[0066] Preferably, Fig. 9 , Fig.10 and 16As shown, there are two first movable plates 6, and a guide rod 51 is provided on the first movable plate 6 to be slidably connected with the first fixed plate 5, which plays a guiding role in the sliding of the first movable plate 6 on the first fixed plate 5, thereby ensuring the stability of the overall structure of the auxiliary tooling 2 and improving the accuracy of the position of the adjustment frame 1; the first movable plate 6 is rotatably connected with a plurality of rollers 52 in contact with the frame 1 to reduce the friction between the frame 1 and the first movable plate 6 and improve the efficiency of the adjustment frame 1; the first fixed plate 5 is symmetrically slidably connected with a first slide plate 53, and a plurality of fifth connecting blocks 54 are provided between the first slide plate 53 and the first movable plate 6, and the two ends of the fifth connecting block 54 are rotatably connected with the first slide plate 53 and the first movable plate 6 respectively; the first fixed plate 5 is provided with a third motor 55, and the movable end of the third motor 55 is provided with a driving gear 56, wherein one end of the first slide plate 53 is provided with a fixed rack 57, and the other end of the first slide plate 53 is provided with a fixed rack 57. The movable rack 58 is slidably connected to the frame 1, and the driving gear 56 is meshed with the fixed rack 57 and the movable rack 58 at the same time. When the height of the frame 1 after clamping needs to be adjusted, the driving gear 56 is driven to rotate by the third motor 55. Since the fixed rack 57 and the movable rack 58 are meshed with the driving gear 56 at the same time, the two first slides 53 are driven to move in opposite directions at the same time. There is no need to set up a separate power device to drive the two first slides 53 respectively, which further reduces the space required for the installation of the power device and the manufacturing cost required; at the same time, since the two ends of the fifth connecting block 54 are respectively rotatably connected to the first slide 53 and the first movable plate 6, the generated component force will drive the first movable plate 6 to slide on the first fixed plate 5, thereby adjusting the height of the frame 1 after clamping, compensating for the deviation of the frame 1 of different heights to the reference point, so that the weld formed in the welding process is in the specified position, improving the quality of welding the shaft fixing sleeve 3 on the frame 1, and thus improving the overall stability of the automobile sleeper frame after production.

[0067] Preferably, Fig.10 , Fig.11 and Fig.12As shown, a T-shaped block 59 is provided at the end of the other first slide plate 53, an adjusting block 60 is provided at the end of the movable rack 58 and is slidably connected to the T-shaped block 59, a symmetrical sliding connection limit block 61 is provided on the T-shaped block 59, a plurality of limit grooves 62 are provided on the adjusting block 60 and are plugged with the limit blocks 61, and inclined surfaces 63 are provided on both sides of the two limit blocks 61 and are in contact with the limit grooves 62, a top screw 64 is threadedly connected to the T-shaped block 59, and the end of the top screw 64 is provided with a screw threadedly connected to the limit block 61. When there is a drop between the bottom surfaces of the two sides of the frame 1, the top screw 64 is rotated on the T-shaped block 59 to move the top screw 64 on the T-shaped block 59, thereby releasing the restriction on the sliding of the limit block 61 on the T-shaped block 59, and then sliding one of the corresponding first slide plates 53 relative to the movable rack 58, so that the inclined surface 63 provided on the limit block 61 contacts the limit groove 62 provided on the adjustment block 60, so that the limit block 61 retracts into the T-shaped block 59, so that the T-shaped block 59 can move relative to the adjustment block 60, thereby adjusting the position of the limit block 61. The position of one of the first slide plates 53 is adjusted, and the thrust is transmitted through the fifth connecting block 54 provided on one of the first slide plates 53, so as to drive one of the first movable plates 6 to move up, so that it has a height difference with the other first movable plate 6, thereby compensating for the height difference at both ends of the frame 1, and stably fixing the frame 1 on the auxiliary tooling 2, thereby improving the effect of subsequent welding of the frame 1 and the fixing sleeve 3; finally, by rotating the top screw 64 on the T-shaped block 59, the conical surface 65 provided on its end is in contact with the limit block 61, pushing it to slide on the T-shaped block 59, so that it re-enters the corresponding limit groove 62, thereby limiting the movement of the adjustment block 60 relative to the T-shaped block 59, and realizing the fixation of the movable rack 58 on the first movable plate 6. At the same time, the top screw 64 will limit the limit block 61 to move inward, so as to avoid the external force accidentally driving the limit block 61 to move, resulting in a change in the height of the first movable plate 6, and changing the reference of the auxiliary tooling 2 in the Z-axis direction of the fixed frame 1, thereby ensuring that the weld formed during the welding process is in the specified position, and improving the quality of welding the shaft fixing sleeve 3 on the frame 1.

[0068] Preferably, Fig.13 and Fig.14As shown, the ends of the two first movable plates 6 are slidably connected with fourth sliders 66, the first positioning block 7 is fixedly arranged at the end of one of the fourth sliders 66, the other fourth slider 66 is provided with a second cylinder 67, the second positioning block 8 is fixedly arranged at the movable end of the second cylinder 67, the frame 1 is moved to make it contact with the first positioning block 7, and then the second positioning block 8 is driven by the second cylinder 67 to move on the fourth slider 66 until the second positioning block 8 contacts with the frame 1, thereby fixing the frame 1 on the auxiliary tooling 2; a plurality of second columns 68 are arranged on the fourth slider 66, a fourth motor 69 is respectively arranged on the two first movable plates 6, a third driving wheel 70 is arranged at the movable end of the fourth motor 69, a third arc block 71 and a second lever 72 are respectively arranged on both sides of the third driving wheel 70, the third arc block 71 contacts with a plurality of second columns 68 at the same time, and limits the fourth slider 66. Slide on the first movable plate 6 to prevent external force from accidentally changing the position of the fourth slider 66, causing the reference edge position of the auxiliary tooling 2 to change, thereby ensuring that the weld formed in the welding process is in the specified position, and improving the quality of welding the shaft fixing sleeve 3 on the frame 1; the second lever 72 contacts with several second columns 68 in turn, and drives the fourth slider 66 to slide on the first movable plate 6, drives the fourth slider 66 to slide on the first movable plate 6, thereby driving the first positioning block 7 to move on the two first movable plates 6 respectively, and changes the reference point of the X-axis of the frame 1 on the first movable plate 6, until the reference point of the welding device corresponds to the theoretical center point of the first fixing sleeve 3, thereby compensating for the deviation of the distance from the center point of the different first fixing sleeves 3 to the reference edge of the frame 1, so that the weld formed in the welding process is in the specified position, improves the quality of welding the shaft fixing sleeve 3 on the frame 1, and thereby improves the overall stability of the automobile sleeper frame after production.

[0069] Preferably, Fig. 9 and 15As shown, a second slide plate 73 is slidably connected to the first movable plate 6 in the longitudinal direction, and the moving direction of the second slide plate 73 can be limited by a positioning pin. The third positioning block 9 is fixedly arranged at one end of the second slide plate 73, and a third cylinder 74 is arranged at the other end of the second slide plate 73. The fourth positioning block 10 is arranged at the movable end of the third cylinder 74; a push rod 75 is arranged at one end of the second slide plate 73, and a third column 76 is arranged at the end of the push rod 75. A fifth motor 77 is arranged on the first movable plate 6, and a fourth driving wheel 78 is arranged at the movable end of the fifth motor 77. A vortex groove 79 is arranged on the fourth driving wheel 78 for sliding contact with the third column 76. When the distance from the center point of the fixed sleeve 3 to the side edge of the frame 1 changes, the fourth driving wheel 78 is driven to rotate by the fifth motor 77, so that the vortex groove 79 provided on the fourth driving wheel 78 further contacts with the third column 76. Since the positioning pin contacts the side edge of the second slide plate 73, it is moved on the first movable plate 6 The sliding plays a guiding role, so that the second slide plate 73 is slidably arranged on the first movable plate 6 along the longitudinal direction, and the position of the third positioning block 9 is changed, thereby changing the reference point of the Y axis of the frame 1 on the first movable plate 6, until the reference point of the welding device corresponds to the theoretical center point of the first fixing sleeve 3, thereby compensating for the deviation of the distance from the center point of the different first fixing sleeves 3 to the reference edge of the frame 1, so that the weld formed in the welding process is in the specified position, and the quality of the welding shaft fixing sleeve 3 on the frame 1 is improved, thereby improving the overall stability of the automobile sleeper frame after production; subsequently, the frame 1 is moved to make it contact with the third positioning block 9, and then the fourth positioning block 10 is driven by the third cylinder 74 to move on the second slide plate 73 until the fourth positioning block 10 contacts the frame 1, thereby fixing the frame 1 on the auxiliary tooling 2. In addition, after adjusting the position of the Y axis reference point, the second slide plate 73 will drive the cylinder to move together, without the need to readjust the telescopic stroke of the cylinder, further improving the efficiency of fixing different models of frames 1.

[0070] Preferably, Fig. 9 and 15 As shown, the second fixed plate 11 is provided with a fourth cylinder 80, and the movable end of the fourth cylinder 80 is connected to the second movable plate 12, driving the second movable plate 12 to slide on the second fixed plate 11, thereby providing power for the welding device to rise and fall; the second movable plate 12 is provided with a sixth motor 81, and a screw 82 is rotatably connected thereto, the movable end of the sixth motor 81 is connected to the screw 82, and the frame 13 is provided with a sixth connecting block 83 threadedly connected to the screw 82, and the screw 82 is driven to rotate on the second movable plate 12 by the sixth motor 81, and since the sixth connecting block 83 is threadedly connected to the screw 82, the frame 13 is driven to move on the second movable plate 12, and the welding device is moved to the next welding position.

[0071] Example 1

[0072] The present invention provides a welding device for a sleeper frame of an automobile, such as Figure 1-3 As shown, when it is necessary to weld the automobile sleeper frame, several fixing sleeves 3 are placed in the grooves provided on the frame 1 in advance, and then the frame 1 is placed on the first movable plate 6, and the first movable plate 6 slides on the first fixing plate 5 to drive the frame 1 to slide vertically, thereby compensating for the deviation of the frame 1 from the reference point at different heights; then the first positioning block 7 and the third positioning block 9 are slid on the first movable plate 6, and the reference points of the frame 1 on the X-axis and the Y-axis on the first movable plate 6 are adjusted respectively, until the reference point of the welding device corresponds to the theoretical center point of the first fixing sleeve 3, thereby compensating for the deviation of the distance from the center point of the first fixing sleeve 3 to the reference edge of the frame 1, so that the weld formed during the welding process is in the specified position, thereby improving the quality of welding the shaft fixing sleeve 3 on the frame 1, and thus improving the overall stability of the automobile sleeper frame after production;

[0073] Then, the frame 1 is moved on the first movable plate 6 so that its two reference sides are in contact with the first positioning block 7 and the third positioning block 9 respectively, and then the first positioning block 7 and the third positioning block 9 are slid on the first movable plate 6 so that they are in contact with the other two side edges of the frame 1 respectively, so that frames 1 of different models are fixed on the first movable plate 6, and there is no need to separately set up auxiliary tooling 2 of different models for clamping frames 1 of different models, thereby reducing the cost required for producing the welding device;

[0074] After fixing the frame 1, the first L-shaped block 16 and the second L-shaped block 18 slide on the frame 13, driving the first welding head 22 and the second welding head 23 to slide on the frame 13, adjusting the distance between the first welding head 22 and the second welding head 23 and the center point of the fixing sleeve 3 when working, and then the first adjustment plate 17 and the second adjustment plate 19 rotate on the first L-shaped block 16 and the second L-shaped block 18 respectively to adjust the welding angle of the welding head, ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixing sleeve 3 and the frame 1, thereby improving the quality of welding different types of automobile sleeper frames, and adapting to different sizes of fixing sleeves 3, without the need to customize different types of welding devices according to needs, reducing the cost required for producing welding devices;

[0075] After adjusting the angles and positions of the first welding head 22 and the second welding head 23, the second movable plate 12 slides downward on the second fixed plate 11 to drive the plurality of welding mechanisms 4 on the frame 13 to move downward, so that the plurality of first welding heads 22 and the plurality of second welding heads 23 move to the connection between the frame 1 and the fixed sleeve 3, and the first slider 20 and the second slider 21 slide on the first adjustment plate 17 and the second adjustment plate 19 respectively to drive the first welding head 22 and the second welding head 23 to slide together, so that the first welding head 22 and the second welding head 23 move along the connection between the frame 1 and the fixed sleeve 3 respectively, and form The second movable plate 12 is then slid upward on the second fixed plate 11 to drive the several welding mechanisms 4 on the frame 13 to move upward, so that the several welding mechanisms 4 are withdrawn from the working area. The frame 13 is then slid on the second movable plate 12 to move the several welding mechanisms 4 to the next connection between the fixed sleeve 3 and the frame 1. The above actions are repeated to realize the welding of all the fixed sleeves 3 and the frame 1. There is no need to manually weld the fixed sleeves 3 to the frame 1 one by one, thereby reducing the labor intensity of the workers and improving the production efficiency of the automobile sleeper frame.

[0076] Example 2

[0077] On the basis of Example 1, Figure 3 and Figure 4 As shown, in the initial state, the first cylinder 35 is in a fully expanded state, the protrusion 31 provided at the end of the connecting key 29 is located in the second connecting groove 33, and the connecting key 29 slides into the third connecting groove 34. At this time, the resistance generated by the contact between the connecting key 29 and the first swing arm 24, the second swing arm 25, and the frame 13 will limit the rotation of the first swing arm 24 and the second swing arm 25 relative to the frame 13, so as to achieve the fixation of the position of the welding mechanism 4 on the frame 13, avoid the unintentional driving of the external force to cause the position to shift, and then ensure that the weld formed by the welding mechanism 4 falls stably on the connection between the fixing sleeve 3 and the frame 1, thereby improving the quality of the welded model automobile sleeper frame;

[0078] When the positions of the two groups of transverse welding units 14 and the two groups of longitudinal welding units 15 on the frame 13 need to be adjusted simultaneously, the first cylinder 35 is used to fully retract the movable end, driving one end of the third connecting block 36 to move, thereby pulling the connecting key 29 to move upward, until the connecting key 29 slides out of the third connecting groove 34, releasing the restriction on the rotation of the first swing arm 24 and the second swing arm 25 relative to the frame 13, and then the protrusion 31 provided at the end of the connecting block passes through the arc groove 45 and enters the first connecting groove 32, so that the first swing arm 24 and the second swing arm 25 are connected into a whole;

[0079] Then, the first motor 39 drives the first driving wheel 40 to rotate, so that the first arc block 41 provided on the first driving wheel 40 slides out from between the first columns 38, and the restriction on the rotation of the driven wheel 37 on the frame 13 is released. Then, the first lever 42 contacts the first column 38, and the force generated after the contact drives the driven wheel 37 to rotate on the frame 13. Then, the first arc block 41 re-enters between the first columns 38, and the resistance generated after the first column 38 contacts the first arc block 41 limits the rotation of the driven wheel 37 relative to the frame 13, so as to prevent the external force from accidentally driving the rotating shaft 28 to rotate, resulting in the change of the position of the horizontal welding unit 14 and the vertical welding unit, thereby ensuring that the weld formed by the welding mechanism 4 stably falls on the fixed sleeve 3 and the connection between the frame 1 and the frame 1, thereby improving the quality of the welded model automobile sleeper frame; after repeating the above steps for many times, the driving shaft 28 is rotated on the frame 13, driving the first swing arm 24 to rotate along with the shaft 28, and at the same time, the torque is transmitted through the connecting key 29, which drives the second swing arm 25 to rotate along with the first swing arm 24, and adjusts the positions of the horizontal welding unit 14 and the vertical welding unit to ensure that the weld formed by the welding mechanism 4 stably falls on the connection between the fixing sleeve 3 and the frame 1, thereby improving the quality of the welded model automobile sleeper frame; in addition, the positions of the first swing arm 24 and the second swing arm 25 are adjusted at the same time, and there is no need to set up an additional power device to drive the first swing arm 24 and the second swing arm 25 to rotate separately, thereby further reducing the cost required for manufacturing the power device and the space required for installation;

[0080] When it is necessary to adjust the position of the transverse welding unit 14 separately, the first cylinder 35 is extended a short distance so that the protrusion 31 enters the annular groove 30, so that the first swing arm 24 can rotate relative to the connecting key 29, thereby adjusting the position of the transverse welding unit 14 separately, so that the first welding head 22 on the transverse welding unit 14 is located at the connection between the frame 1 and the fixed sleeve 3, ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixed sleeve 3 and the frame 1, and improving the quality of the welded model automobile sleeper frame; at the same time, the end of the connecting key 29 re-enters the third connecting groove 34, limiting the rotation of the first swing arm 24 relative to the frame 13, avoiding external force from accidentally driving the first swing arm 24 to rotate together, ensuring that the weld formed by the welding mechanism 4 stably falls on the connection between the fixed sleeve 3 and the frame 1, and improving the quality of the welded model automobile sleeper frame.

[0081] Example 3

[0082] On the basis of Example 1, Figure 3 and Figure 4As shown, when the angle of the first welding head 22 or the second welding head 23 needs to be adjusted, the second motor 47 on the first L-shaped block 16 or the second L-shaped block 18 drives the second driving wheel 48 to rotate, so that the second arc block 49 slides out of the arc groove 45 on the third slider 44, and the restriction of the third slider 44 sliding on the first L-shaped block 16 or the second L-shaped block 18 is released, and then the shift block 50 contacts the shift groove 46. The force generated after the two contact will drive the third slider 44 to slide on the first L-shaped block 16 or the second L-shaped block 18, and then the thrust is transmitted through the third connecting block 36 to drive the first adjustment plate 17 and the second adjustment plate 19 to rotate on the first L-shaped block 16 or the second L-shaped block 18, thereby realizing the adjustment of the angles of the first welding head 22 and the second welding head 23. Ensure that the weld formed by the welding mechanism 4 falls stably on the connection between the fixed sleeve 3 and the frame 1, thereby improving the quality of the welded model automobile sleeper frame; at the same time, each time the third slider 44 is driven to slide on the first L-shaped block 16 or the second L-shaped block 18, it enters the arc groove 45 through the second arc block 49. The resistance generated after the two contact will limit the third slider 44 from sliding on the first L-shaped block 16 or the second L-shaped block 18, avoiding external force from accidentally driving the first adjustment plate 17 and the second adjustment plate 19 to rotate on the first L-shaped block 16 or the second L-shaped block 18, causing the angle of the first welding head 22 and the second welding head 23 to change, thereby ensuring that the weld formed by the welding mechanism 4 falls stably on the connection between the fixed sleeve 3 and the frame 1, further improving the quality of the welded model automobile sleeper frame.

[0083] Example 4

[0084] On the basis of Example 1, Figure 3 and Figure 4 As shown, when the height of the frame 1 after clamping needs to be adjusted, the driving gear 56 is driven to rotate by the third motor 55. Since the fixed rack 57 and the movable rack 58 are meshed with the driving gear 56 at the same time, the two first slide plates 53 are driven to move in opposite directions at the same time. There is no need to set up a separate power device to drive the two first slide plates 53 respectively, which further reduces the space required for the installation of the power device and the manufacturing cost. At the same time, since the two ends of the fifth connecting block 54 are respectively rotatably connected with the first slide plate 53 and the first movable plate 6, the generated component force will drive the first movable plate 6 to slide on the first fixed plate 5, thereby adjusting the height of the frame 1 after clamping, compensating for the deviation of the frame 1 of different heights from the reference point, so that the weld formed in the welding process is in the specified position, improving the quality of welding the shaft fixing sleeve 3 on the frame 1, and thus improving the overall stability of the automobile sleeper frame after production.

[0085] When there is a drop in the bottom surfaces of both sides of the frame 1, the top screw 64 is rotated on the T-block 59 to move the top screw 64 on the T-block 59, thereby releasing the restriction on the sliding of the limit block 61 on the T-block 59, and then sliding one of the corresponding first slide plates 53 relative to the movable rack 58, so that the inclined surface 63 provided on the limit block 61 contacts the limit groove 62 provided on the adjustment block 60, so that the limit block 61 retracts into the T-block 59, so that the T-block 59 can move relative to the adjustment block 60, thereby adjusting the position of one of the first slide plates 53, and transmitting the thrust through the fifth connecting block 54 provided on one of the first slide plates 53, driving one of the first movable plates 6 to move upward, so that it has a height difference with the other first movable plate 6, thereby compensating for the height drop at both ends of the frame 1. The frame 1 is stably fixed on the auxiliary tooling 2 to improve the effect of subsequent welding of the frame 1 and the fixing sleeve 3; finally, by rotating the top screw 64 on the T-block 59, the conical surface 65 provided on its end is in contact with the limit block 61, pushing it to slide on the T-block 59, so that it re-enters the corresponding limit groove 62, thereby limiting the movement of the adjustment block 60 relative to the T-block 59, and realizing the fixation of the movable rack 58 on the first movable plate 6. At the same time, the top screw 64 will limit the movement of the limit block 61 inward to prevent external force from accidentally driving the limit block 61 to move, resulting in a change in the height of the first movable plate 6, and changing the reference of the auxiliary tooling 2 in the Z-axis direction of the fixed frame 1, thereby ensuring that the weld formed during the welding process is in the specified position, and improving the quality of welding the shaft fixing sleeve 3 on the frame 1.

[0086] Example 5

[0087] On the basis of Example 1, Figure 3 and Figure 4As shown, when the distance from the center point of the fixed sleeve 3 to the end of the frame 1 changes, the fourth motor 69 arranged on the two first movable plates 6 drives the third driving wheel 70 to rotate, so that the third arc block 71 arranged on one side of the third driving wheel 70 slides out from between the plurality of second columns 68, and the restriction on the fourth slider 66 sliding on the first movable plate 6 is released. Then the second lever 72 arranged on the other side of the third driving wheel 70 contacts the second column 68, and the force generated after the two contact drives the fourth slider 66 to slide on the first movable plate 6, thereby driving the first positioning block 7 to move on the two first movable plates 6 respectively, changing the reference point of the X-axis of the frame 1 on the first movable plate 6, until the reference point of the welding device corresponds to the theoretical center point of the first fixed sleeve 3, thereby compensating for the deviation of the distance from the center point of the different first fixed sleeves 3 to the reference edge of the frame 1, so that the welding process The formed weld is in the specified position, which improves the quality of welding the shaft fixing sleeve 3 on the frame 1, thereby improving the overall stability of the automobile sleeper frame after production; subsequently, the frame 1 is moved to make it contact with the first positioning block 7, and then the second positioning block 8 is driven by the second cylinder 67 to move on the fourth slider 66 until the second positioning block 8 contacts the frame 1, thereby fixing the frame 1 on the auxiliary tooling 2; in addition, each time the position of the fourth slider 66 on the first movable plate 6 is adjusted, the third arc block 71 will re-enter between the plurality of second uprights 68, and the resistance generated by the contact between the two will limit the fourth slider 66 from continuing to slide on the first movable plate 6, thereby preventing the external force from inadvertently changing the position of the fourth slider 66, resulting in a change in the reference edge position of the auxiliary tooling 2, thereby ensuring that the weld formed during the welding process is in the specified position, thereby improving the quality of welding the shaft fixing sleeve 3 on the frame 1;

[0088] When the distance from the center point of the fixed sleeve 3 to the side changes, the fourth driving wheel 78 is driven to rotate by the fifth motor 77, so that the vortex groove 79 provided on the fourth driving wheel 78 further contacts the third column 76. Since the positioning pin contacts the side of the second slide plate 73, it guides its sliding on the first movable plate 6, so that the second slide plate 73 is longitudinally slidably arranged on the first movable plate 6, and the position of the third positioning block 9 is changed, thereby changing the reference point of the Y axis of the frame 1 on the first movable plate 6, until the reference point of the welding device corresponds to the theoretical center point of the first fixed sleeve 3, thereby compensating for the different center points of the first fixed sleeve 3. The deviation of the distance to the reference edge of the frame 1 makes the weld formed in the welding process in the specified position, improves the quality of welding the shaft fixing sleeve 3 on the frame 1, and further improves the overall stability of the automobile sleeper frame after production; then, the frame 1 is moved to make it contact with the third positioning block 9, and then the fourth positioning block 10 is driven by the third cylinder 74 to move on the second slide plate 73 until the fourth positioning block 10 contacts the frame 1, thereby fixing the frame 1 on the auxiliary tooling 2. In addition, after adjusting the position of the Y-axis reference point, the second slide plate 73 will drive the cylinder to move together, without the need to readjust the telescopic stroke of the cylinder, thereby further improving the efficiency of fixing frames 1 of different models.

Claims

1. A welding device for a sleeper car frame, comprising an auxiliary tool (2) for fixing a frame (1), and a plurality of welding mechanisms (4) used in conjunction with the frame (1) and a fixing sleeve (3), characterized in that: The auxiliary tooling (2) comprises a first fixed plate (5), and a first movable plate (6) vertically slidably arranged on the first fixed plate (5), the first movable plate (6) being in contact with the bottom of the frame (1), the two ends of the first movable plate (6) being respectively connected with a first positioning block (7) and a second positioning block (8) in a transverse sliding manner, the two ends of the frame (1) being respectively in contact with the first positioning block (7) and the second positioning block (8), the two sides of the first movable plate (6) being respectively connected with a third positioning block (9) and a fourth positioning block (10) in a transverse sliding manner, the two sides of the frame (1) being respectively in contact with the third positioning block (9) and the fourth positioning block (10); The welding mechanism (4) further comprises a second fixed plate (11), and a second movable plate (12) vertically slidably arranged on the second fixed plate (11), the second movable plate (12) being slidably connected to a frame (13) in a transverse direction, the welding mechanism (4) comprising two groups of transverse welding units (14) and two groups of longitudinal welding units (15), the transverse welding unit (14) comprising a first L-shaped block (16) slidably arranged on the frame (13) in a transverse direction, and a first adjusting plate (17) rotatably arranged on the first L-shaped block (16), the longitudinal welding unit (15) comprising a second L-shaped block (18) slidably arranged on the frame (13) in a longitudinal direction, and a second adjusting plate (19) rotatably arranged on the second L-shaped block (18), the first adjusting plate (17) and the second adjusting plate (19) being slidably connected to a first slider (20) and a second slider (21) respectively, the first slider (20) and the second slider (21) being provided with a first welding head (22) and a second welding head (23) for use with the frame (1) and the fixed sleeve (3); The frame (13) is rotatably connected to a first swing arm (24) and a second swing arm (25); two ends of the first swing arm (24) and the second swing arm (25) are rotatably connected to a first connecting block (26) and a second connecting block (27); ends of the first connecting block (26) and the second connecting block (27) are rotatably connected to a first L-shaped block (16) and a second L-shaped block (18); The frame (13) is rotatably connected to a rotating shaft (28) fixedly connected to the first swing arm (24), the rotating shaft (28) is movably connected to the first swing arm (24), the first swing arm (24) is slidably connected to a connecting key (29), the second swing arm (25) is provided with an annular groove (30), the end of the connecting key (29) is provided with a convex block (31) rotatably connected to the annular groove (30), the second swing arm (25) is respectively provided with a plurality of first connecting grooves (32) and second connecting grooves (33), the convex block (31) is plugged and matched with the first connecting groove (32) and the second connecting groove (33) in sequence, the frame (13) is provided with a third connecting groove (34) plugged and matched with the connecting key (29), the second swing arm (25) is provided with a first cylinder (35), the movable end of the first cylinder (35) is rotatably connected to a third connecting block (36), the end of the third connecting block (36) is rotatably connected to the connecting key (29); A driven wheel (37) is provided at the end of the rotating shaft (28), and a plurality of first columns (38) are provided on the driven wheel (37). The rotating shaft also includes a first motor (39), and a first driving wheel (40) is provided at the movable end of the first motor (39). First arc blocks (41) and first shifting rods (42) are provided on both sides of the first driving wheel (40), respectively. The first arc blocks (41) are in contact with the plurality of first columns (38) at the same time, and restrict the driven wheel (37) from rotating on the frame (13). The first shifting rods (42) are in contact with the plurality of first columns (38) in sequence, respectively, and restrict the driven wheel (37) from rotating on the frame (13).

2. A welding device for a sleeper car frame according to claim 1, characterized in that: The ends of the first adjustment plate (17) and the second adjustment plate (19) are both rotatably connected to a fourth connection block (43); the first L-shaped block (16) and the second L-shaped block (18) are respectively slidably connected to a third slider (44); the end of the third slider (44) is rotatably connected to the fourth connection block (43); the third slider (44) is provided with a plurality of arc grooves (45); a shifting groove (46) is provided between two adjacent arc grooves (45); and the second motor (47) is respectively provided on the first L-shaped block (16) and the second L-shaped block (18); a second driving wheel (48) is provided at a movable end; second arc blocks (49) contacting the arc grooves (45) are respectively provided on upper and lower sides of the second driving wheel (48); and shifting blocks (50) contacting the shifting grooves (46) are respectively provided on left and right sides of the second driving wheel (48).

3. A welding device for a sleeper car frame according to claim 1, characterized in that: There are two first movable plates (6), the first movable plates (6) are provided with guide rods (51) slidably connected to the first fixed plates (5), the first movable plates (6) are rotatably connected to a plurality of rollers (52) in contact with the frame (1), the first fixed plates (5) are symmetrically slidably connected to a first slide plate (53), a plurality of fifth connecting blocks (54) are provided between the first slide plate (53) and the first movable plates (6), the two ends of the fifth connecting blocks (54) are rotatably connected to the first slide plate (53) and the first movable plates (6), the first fixed plates (5) are provided with a third motor (55), the movable end of the third motor (55) is provided with a driving gear (56), one end of the first slide plates (53) is provided with a fixed rack (57), the other end of the first slide plates (53) is slidably connected to a movable rack (58), and the driving gear (56) is meshed with the fixed rack (57) and the movable rack (58) at the same time.

4. A welding device for a sleeper car frame according to claim 3, characterized in that: A T-shaped block (59) is provided at the end of the other first slide plate (53), an adjusting block (60) slidably connected to the T-shaped block (59) is provided at the end of the movable rack (58), a symmetrical sliding connection limit block (61) is provided on the T-shaped block (59), the adjusting block (60) is provided with a plurality of limit grooves (62) plugged into and matched with the limit blocks (61), two sides of the two limit blocks (61) are respectively provided with inclined surfaces (63) in contact with the limit grooves (62), a top screw (64) is threadedly connected to the T-shaped block (59), and the end of the top screw (64) is provided with a conical surface (65) in contact with the limit block (61).

5. A welding device for a sleeper car frame according to claim 1, characterized in that: The ends of the two first movable plates (6) are respectively slidably connected with fourth sliders (66); the first positioning block (7) is fixedly arranged at the end of one of the fourth sliders (66); the other fourth slider (66) is provided with a second cylinder (67); the second positioning block (8) is fixedly arranged at the movable end of the second cylinder (67); the fourth slider (66) is provided with a plurality of second upright posts (68); the two first movable plates (6) are respectively provided with fourth motors (69); the movable end of the fourth motor (69) is provided with a third driving wheel (70); third arc blocks (71) and second levers (72) are respectively arranged on both sides of the third driving wheel (70); the third arc block (71) is in contact with a plurality of second upright posts (68) at the same time and restricts the fourth slider (66) from sliding on the first movable plate (6); the second levers (72) are in contact with a plurality of second upright posts (68) in sequence and drive the fourth slider (66) to slide on the first movable plate (6).

6. A welding device for a sleeper car frame according to claim 1, characterized in that: A second slide plate (73) is slidably connected to the first movable plate (6) in the longitudinal direction; the third positioning block (9) is fixedly arranged at one end of the second slide plate (73); a third cylinder (74) is arranged at the other end of the second slide plate (73); and the fourth positioning block (10) is arranged at the movable end of the third cylinder (74); a push rod (75) is arranged at one end of the second slide plate (73); a third column (76) is arranged at the end of the push rod (75); a fifth motor (77) is arranged on the first movable plate (6); a fourth driving wheel (78) is arranged at the movable end of the fifth motor (77); and a vortex groove (79) is arranged on the fourth driving wheel (78) for sliding contact with the third column (76) for sliding contact with the third column (76).

7. A welding device for a sleeper car frame according to claim 1, characterized in that: The second fixed plate (11) is provided with a fourth cylinder (80), the movable end of the fourth cylinder (80) is connected to the second movable plate (12), the second movable plate (12) is provided with a sixth motor (81) and is rotatably connected to a screw rod (82), the movable end of the sixth motor (81) is connected to the screw rod (82), and the frame (13) is provided with a sixth connecting block (83) threadedly connected to the screw rod (82).

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