Automatic passenger car ceiling framework double-beam welding auxiliary device and working method

Abstract

The invention discloses an automatic passenger car ceiling framework double-cross-beam welding auxiliary device and a working method, solves the problem that the deviation of two cross beams in the horizontal and vertical directions cannot be completely eliminated, improves the machining efficiency, and improves the universality of the device. According to the technical scheme, the device comprises a mounting base, a double-beam placing platform and a control system; the double-cross-beam placing platform is arranged above the mounting base, a double-cross-beam clamping structure is arranged on the double-cross-beam placing platform, and an air pump system is arranged on the double-cross-beam clamping structure; two top end clamping devices and two feeding and discharging clamping devices are further arranged above the mounting base, and the two top end clamping devices are arranged at the two ends of the mounting base in a sliding mode and are oppositely arranged; the two feeding and discharging clamping devices are arranged on the double-cross-beam placing platform in a sliding manner; the two top end clamping devices and the two feeding and discharging clamping devices are powered by a driving motor; and the driving motor and the air pump system are both connected with the control system.

Description

Technical Field

[0001] The present invention belongs to the technical field of welding processing, and particularly relates to an automated double-beam welding auxiliary device and working method for the roof frame of a bus. Background Art

[0002] The statements in this part only provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] During the manufacturing process of a bus, the double beam of the roof frame consists of two beams welded together as a single structure. The positioning and alignment of the double beam of the roof frame are key steps in the welding operation. When manually positioning the double beam in the traditional way, it is often difficult to ensure the precise alignment and stable fixation of the beams. Due to the long length and heavy weight of the double beam, manual operation is prone to position deviation, resulting in inaccurate welding, which in turn affects the structural strength and safety of the entire vehicle.

[0004] Existing production equipment is optimized based on manual jigs. Although it alleviates the deficiencies of pure manual operation to a certain extent, there are still deficiencies in the precise positioning and alignment of the double beam and production efficiency. The clamping and alignment mechanisms of the equipment often cannot completely eliminate the offset of the beam in the horizontal and vertical directions, resulting in inconsistent welding positions. In addition, the equipment lacks flexibility when dealing with beams of different specifications and is difficult to meet diverse production requirements. Existing technologies have also tried to improve accuracy by adding positioning sensors and improving clamping devices, but these improvements usually come with an increase in system complexity and cost, and the effects are limited in practical applications. Summary of the Invention

[0005] In view of the above problems, the present invention provides an automated double-beam welding auxiliary device and working method for the roof frame of a bus, which solves the problem that the offset between the two beams in the horizontal and vertical directions cannot be completely eliminated, improves the processing efficiency, and improves the versatility of the device.

[0006] To achieve the above object, the present invention is realized through the following technical solutions:

[0007] In a first aspect, the present invention provides an automated double-beam welding auxiliary device for the roof frame of a bus, including: a mounting base, a double-beam placement platform, and a control system; the double-beam placement platform is arranged above the mounting base and along the length direction of the mounting base, and a double-beam clamping structure is provided on the double-beam placement platform, and an air pump system is provided on the double-beam clamping structure.

[0008] Above the installation base, there are also a first top clamping device, a second top clamping device, a first feeding and discharging clamping device, and a second feeding and discharging clamping device. The first top clamping device and the second top clamping device are slidably arranged at both ends of the installation base and are oppositely arranged along the length direction of the installation base for clamping the double beam along the axial direction of the double beam. The first feeding and discharging clamping device and the second feeding and discharging clamping device are slidably arranged on the double beam placement platform. The first feeding and discharging clamping device is located above one end of the first top clamping device, and the second feeding and discharging clamping device is located above one end of the second top clamping device for cooperating with the air pump system to clamp the double beam.

[0009] The first top clamping device and the first feeding and discharging clamping device are connected to a first driving motor; the second top clamping device and the second feeding and discharging clamping device are connected to a second driving motor.

[0010] The first driving motor, the second driving motor, and the air pump system are all connected to the control system and operate according to the instructions of the control system.

[0011] Furthermore, the air pump system includes a horizontal clamping air pump group and a vertical clamping air pump group. The horizontal clamping air pump group and the vertical clamping air pump group are composed of multiple clamping air pumps. The pressing air pump is composed of a cylinder, a shaft, and a flexible gasket. Two flexible gaskets are arranged at the end of the piston rod of the clamping air pump through a bracket.

[0012] Furthermore, the double beam clamping structure consists of a through beam and two L-shaped beams. The through beam is a straight rectangular steel pipe structure, and the L-shaped beam is a bent rectangular steel pipe structure. The through beam is fixedly arranged on the double beam placement platform. One end of the L-shaped beam is fixedly connected to the through beam. The horizontal clamping air pump group is arranged on the through beam, and the vertical clamping air pump group is arranged at the other end of the L-shaped beam.

[0013] Furthermore, the first feeding and discharging clamping device and the second feeding and discharging clamping device are connected to the double beam placement platform through dovetail grooves.

[0014] Furthermore, the first feeding and discharging clamping device is directly driven by the driving gear on the first driving motor, and the second feeding and discharging clamping device is directly driven by the driving gear on the second driving motor.

[0015] Furthermore, a first transmission shaft is arranged between the first top clamping device and the first driving motor, and the first driving motor drives the first top clamping device through a gear transmission form; a second transmission shaft is arranged between the second top clamping device and the second driving motor, and the second driving motor drives the second top clamping device through a gear transmission form.

[0016] Further, a clamping groove is provided at the top of the first feeding and discharging clamping device and the second feeding and discharging clamping device, and a cushion block is also provided at the position of the clamping groove to prevent the double cross beam from moving.

[0017] Further, a plurality of limiting sleeves are provided between the first top clamping device, the second top clamping device and the mounting base to limit the moving directions of the first top clamping device and the second top clamping device. The limiting sleeves are fixedly connected to the mounting base.

[0018] Further, the first top clamping device and the second top clamping device are of a square rod-shaped structure. A rack structure is provided at one end for movement, and a limiting groove is provided at the other end to prevent the double cross beam from moving.

[0019] In a second aspect, the present invention also provides a working method for an automatic double cross beam welding auxiliary device for a bus roof skeleton, including the following steps:

[0020] S1. Place the double cross beam to be welded on the double cross beam placement platform;

[0021] S2. Move the double cross beam along the dovetail groove to a preliminary welding position through the first feeding and discharging clamping device and the second feeding and discharging clamping device. The power of the first feeding and discharging clamping device and the second feeding and discharging clamping device is provided by the first driving motor and the second driving motor. The motor transmits the power to the feeding and discharging mechanism through a transmission device to ensure that the double cross beam can move smoothly;

[0022] S3. Under the pressure action of the vertical clamping air pump group, preliminarily fix the double cross beam in the clamping grooves of the first feeding and discharging clamping device and the second feeding and discharging clamping device to prevent it from shifting during the movement;

[0023] S4. The first top clamping device and the second top clamping device start to work to accurately clamp the top of the double cross beam;

[0024] S5. The horizontal clamping air pump group and the vertical clamping air pump group work together to further correct the position of the double cross beam until accurate positioning;

[0025] S6. After the double cross beam is fixed, the operator can perform the welding operation;

[0026] S7. After the welding is completed, the first driving motor and the second driving motor reverse, and the first feeding and discharging clamping device and the second feeding and discharging clamping device push the welded double cross beam out of the placement platform, and all devices return to their original positions to prepare for the welding operation of the next group of double cross beams.

[0027] Compared with the prior art, the advantages and positive effects of the present invention are:

[0028] Through the provision of multiple clamping devices and a double-beam clamping structure, in cooperation with an air pump system, the present invention achieves precise positioning and reliable clamping of the ceiling skeleton in the horizontal and vertical directions, enabling precise positioning and clamping of the ceiling skeleton, ensuring that the position of the skeleton remains fixed during the welding process, reducing welding deviations, improving welding accuracy, thereby enhancing the welding quality, and further improving the quality and safety of the bus ceiling; it improves the positioning accuracy and stability of the double beams during the welding process; through the control system to control multiple clamping devices and the air pump system through coordinated cooperation, the operator only needs to place the ceiling skeleton to be welded on the platform, and subsequent operations such as positioning, clamping, welding, and discharging are all automatically completed by the device. The operation process is simple, greatly improving production efficiency and reducing labor costs.

[0029] Through the power transmission method of a drive shaft and gear transmission, the first feeding and discharging clamping device and the second feeding and discharging clamping device are designed with a dovetail groove structure, making each device more stable and reliable during operation and ensuring the moving accuracy; the first top clamping device and the second top clamping device adopt a square rod-shaped structure. On the one hand, the structure is stable, and on the other hand, it improves the versatility of the device. When processing double beams of different lengths, the first top clamping device and the second top clamping device with different rack lengths can be replaced according to the actual length of the double beam to improve the versatility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The specification drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0031] Figure 1 It is the overall structure diagram of the double-beam welding auxiliary device of the present invention;

[0032] Figure 2 It is the structure diagram of the double-beam welding auxiliary device of the present invention with a double beam placed;

[0033] Figure 3 It is the structure diagram of the clamping air pump of the present invention;

[0034] Figure 4 It is the partial structure diagram of the first feeding and discharging clamping device and the first top clamping device of the present invention.

[0035] In the figure: 1, mounting base; 2, double-beam placement platform; 3, through beam; 4, first top clamping device; 5, second top clamping device; 6, L-shaped beam; 7, first feeding and discharging clamping device; 8, second feeding and discharging clamping device; 9, air pump system; 91, air cylinder; 92, piston rod; 93, flexible gasket; 94, bracket; 10, first driving motor; 11, first transmission shaft; 12, second driving motor; 13, second transmission shaft; 14, limit sleeve; 15, double beam. Detailed implementation

[0036] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs.

[0037] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the present invention clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof;

[0038] An automated double-beam welding auxiliary device for a bus roof skeleton disclosed in this embodiment, as Figures 1-4 shown, includes: a mounting base 1, a double-beam placement platform 2, and a control system; the double-beam placement platform 2 is arranged above the mounting base 1 and is arranged along the length direction of the mounting base 1. A double-beam clamping structure is provided on the double-beam placement platform 2, and an air pump system 9 is provided on the double-beam clamping structure;

[0039] Above the mounting base 1, there are also a first top clamping device 4, a second top clamping device 5, a first feeding and discharging clamping device 7, and a second feeding and discharging clamping device 8. The first top clamping device 4 and the second top clamping device 5 are slidably arranged at both ends of the mounting base 1 and are arranged opposite to each other along the length direction of the mounting base 1 for clamping the double beam 15 along the axial direction of the double beam 15; the first feeding and discharging clamping device 7 and the second feeding and discharging clamping device 8 are slidably arranged on the double-beam placement platform 2. The first feeding and discharging clamping device 7 is located above one end of the first top clamping device 4, and the second feeding and discharging clamping device 8 is located above one end of the second top clamping device 5 for cooperating with the air pump system 9 to clamp the double beam 15;

[0040] The first top clamping device 4 and the first feeding and discharging clamping device 7 are connected to a first driving motor 10; the second top clamping device 5 and the second feeding and discharging clamping device 8 are connected to a second driving motor 12;

[0041] The first driving motor 10, the second driving motor 12 and the air pump system 9 are all connected to the control system and operate according to the instructions of the control system.

[0042] The air pump system 9 includes a horizontal clamping air pump group and a vertical clamping air pump group. The horizontal clamping air pump group and the vertical clamping air pump group are composed of a plurality of clamping air pumps. The pressing air pump is composed of a cylinder 91, a shaft and a flexible gasket 93. Two flexible gaskets 93 are arranged at the end of the piston rod 92 of the clamping air pump through a bracket 94.

[0043] The double-beam clamping structure consists of a through beam 3 and two L-shaped beams 6. The through beam 3 is a rectangular steel pipe structure, and the L-shaped beam 6 is a bent rectangular steel pipe structure. The through beam 3 is fixedly arranged on the double-beam placement platform 2. One end of the L-shaped beam 6 is fixedly connected to the through beam 3. The horizontal clamping air pump group is arranged on the through beam 3, and the vertical clamping air pump group is arranged at the other end of the L-shaped beam 6.

[0044] The first feeding and discharging clamping device 7 and the second feeding and discharging clamping device 8 are connected to the double-beam placement platform 2 through dovetail grooves.

[0045] The first feeding and discharging clamping device 7 is directly driven by a driving gear on the first driving motor 10, and the second feeding and discharging clamping device 8 is directly driven by a driving gear on the second driving motor 12.

[0046] A first transmission shaft 11 is arranged between the first top clamping device 4 and the first driving motor 10, and the first driving motor 10 drives the first top clamping device 4 in a form of gear transmission; a second transmission shaft 13 is arranged between the second top clamping device 5 and the second driving motor 12, and the second driving motor 12 drives the second top clamping device 5 in a form of gear transmission.

[0047] The tops of the first feeding and discharging clamping device 7 and the second feeding and discharging clamping device 8 are provided with clamping grooves, and pads are also arranged at the positions of the clamping grooves to prevent the double beam 15 from moving.

[0048] A number of limit sleeves 14 are arranged between the first top clamping device 4, the second top clamping device 5 and the mounting base 1 to limit the moving directions of the first top clamping device 4 and the second top clamping device 5, and the limit sleeves 14 are fixedly connected to the mounting base 1.

[0049] The first top clamping device 4 and the second top clamping device 5 are square rod-shaped structures. One end is provided with a rack structure for movement, and the other end is provided with a limiting groove to prevent the double crossbeam 15 from moving. When processing double crossbeams 15 of different lengths, the first top clamping device 4 and the second top clamping device 5 with different rack lengths can be replaced according to the actual length of the double crossbeam 15 to improve the versatility of the device.

[0050] A working method of an automatic welding auxiliary device for the double crossbeam of a bus roof skeleton includes the following steps:

[0051] S1. Place the double crossbeam 15 to be welded on the double crossbeam placement platform 2;

[0052] S2. Move the double crossbeam 15 along the dovetail groove to the preliminary welding position through the first feeding and clamping device 7 and the second feeding and clamping device 8. The power of the first feeding and clamping device 7 and the second feeding and clamping device 8 is provided by the first driving motor 10 and the second driving motor 12. The motor transmits the power to the feeding mechanism through the transmission device to ensure that the double crossbeam 15 can move smoothly;

[0053] S3. Under the pressure of the vertical clamping air pump group, initially fix the double crossbeam 15 in the clamping grooves of the first feeding and clamping device 7 and the second feeding and clamping device 8 to prevent it from shifting during the movement;

[0054] S4. The first top clamping device 4 and the second top clamping device 5 start to work. The drive shaft drives the power to the clamping device under the drive of the driving motor to accurately clamp the top of the double crossbeam 15. The clamping device ensures that the clamping force is evenly distributed to prevent the double crossbeam 15 from sliding or shifting during welding;

[0055] S5. The horizontal clamping air pump group and the vertical clamping air pump group work together to further correct the position of the double crossbeam 15 until precise positioning. The horizontal clamping air pump group ensures that the double crossbeams 15 are closely fitted together. The vertical clamping air pump group presses the double crossbeam 15 against the placement platform through the double gasket system to eliminate any gaps; as the air pressure inside the cylinder 91 increases, the shaft pushes the gasket to move outwards, and the gasket is in close contact with the surface of the double crossbeam 15 to ensure the precise positioning of the double crossbeam 15 before and after welding;

[0056] S6. After the double crossbeam 15 is fixed, the operator can perform the welding operation. Due to the action of each clamping device, the double crossbeam 15 will not move or deviate during welding, ensuring the welding quality;

[0057] After welding is completed, the first drive motor 10 and the second drive motor 12 reverse, and the first feeding and clamping device 7 and the second feeding and clamping device 8 push the welded double crossbeam 15 out of the placement platform, and all devices are reset to prepare for the welding operation of the next group of double crossbeams 15.

[0058] Although the specific implementation manners of the present invention are described above in conjunction with the accompanying drawings, it is not a limitation to the protection scope of the present invention. Those skilled in the art should understand that, based on the technical solutions of the present invention, various modifications or deformations that can be made by those skilled in the art without creative efforts are still within the protection scope of the present invention.

Claims

1. An automated passenger car roof frame double beam welding auxiliary device, characterized in that: include: A mounting base, a double-beam placement platform and a control system; the double-beam placement platform is arranged above the mounting base and along the length direction of the mounting base, the double-beam placement platform is provided with a double-beam clamping structure, and the double-beam clamping structure is provided with an air pump system; A first top clamping device, a second top clamping device, a first material feed and withdrawing clamping device, and a second material feed and withdrawing clamping device are also provided above the mounting base. The first top clamping device and the second top clamping device are slidably provided at both ends of the mounting base and are arranged relatively to each other along the length direction of the mounting base, and are used to clamp the double beams along the axial direction of the double beams; the first material feed and withdrawing clamping device and the second material feed and withdrawing clamping device are slidably provided on the double beam placement platform, the first material feed and withdrawing clamping device is located above one end of the first top clamping device, and the second material feed and withdrawing clamping device is located above one end of the second top clamping device, and is used to cooperate with the air pump system to clamp the double beams; The first top clamping device and the first material feeding and withdrawing clamping device are connected to a first driving motor; the second top clamping device and the second material feeding and withdrawing clamping device are connected to a second driving motor; The first drive motor, the second drive motor and the air pump system are all connected to the control system and operate according to the instructions of the control system.

2. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 1, characterized in that: The air pump system includes a horizontal clamping air pump group and a vertical clamping air pump group. The horizontal clamping air pump group and the vertical clamping air pump group are composed of multiple clamping air pumps. The compression air pump is composed of a cylinder, a shaft and a flexible gasket. The piston rod end of the clamping air pump is provided with two flexible gaskets through a bracket.

3. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 2, characterized in that: The double-cross-beam clamping structure consists of a through beam and two L-shaped beams, the through beam is a rectangular steel pipe structure, the L-shaped beam is a bent square steel pipe structure, the through beam is fixedly arranged on the double-cross-beam placement platform, one end of the L-shaped beam is fixedly connected to the through beam, the horizontal clamping air pump group is arranged on the through beam, and the vertical clamping air pump group is arranged at the other end of the L-shaped beam.

4. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 1, characterized in that: The first material feeding and withdrawing clamping device and the second material feeding and withdrawing clamping device are connected to the double beam placement platform through a dovetail groove.

5. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 1, characterized in that: The first material feeding and withdrawing clamping device is directly driven by a driving gear on the first driving motor, and the second material feeding and withdrawing clamping device is directly driven by a driving gear on the second driving motor.

6. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 1, characterized in that: A first transmission shaft is arranged between the first top clamping device and the first drive motor, and the first drive motor drives the first top clamping device through gear transmission; a second transmission shaft is arranged between the second top clamping device and the second drive motor, and the second drive motor drives the second top clamping device through gear transmission.

7. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 1, characterized in that: The tops of the first material feeding and withdrawing clamping device and the second material feeding and withdrawing clamping device are provided with clamping grooves, and cushion blocks are also provided at the positions of the clamping grooves to prevent the double crossbeams from moving.

8. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 1, characterized in that: A plurality of limiting sleeves are arranged between the first top clamping device, the second top clamping device and the mounting base to limit the moving direction of the first top clamping device and the second top clamping device, and the limiting sleeves are fixedly connected to the mounting base.

9. The automatic passenger car roof frame double crossbeam welding auxiliary device as claimed in claim 1, characterized in that: The first top clamping device and the second top clamping device are square rod-shaped structures, one end of which is provided with a rack structure for movement, and the other end is provided with a limiting groove for preventing the double beam from moving.

10. A working method of an automated passenger car roof frame double crossbeam welding auxiliary device as claimed in any one of claims 2 to 9, characterized in that: The following steps are involved: S1. Place the double beam to be welded on the double beam placement platform; S2. Move the double beam along the dovetail groove to the preliminary welding position through the first feeding and withdrawing clamping device and the second feeding and withdrawing clamping device. The power of the first feeding and withdrawing clamping device and the second feeding and withdrawing clamping device is provided by the first driving motor and the second driving motor. The motor transmits the power to the feeding and withdrawing mechanism through the transmission device to ensure that the double beam can move smoothly. S3. Under the pressure of the clamping air pump group in the vertical direction, the double beam is initially fixed in the slots of the first feed and withdraw material clamping device and the second feed and withdraw material clamping device to prevent it from shifting during the movement; S4. The first top clamping device and the second top clamping device start working to precisely clamp the top of the double beam; S5. The horizontal clamping air pump group and the vertical clamping air pump group work together to further correct the position of the double beam until it is accurately positioned; S6. After the double beams are fixed, the operator can perform welding operations; S7. After the welding is completed, the first drive motor and the second drive motor are reversed, the first feed and withdraw material clamping device and the second feed and withdraw material clamping device push the welded double beams out of the placement platform, and all devices are reset to prepare for the welding operation of the next set of double beams.

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