A rotary positioner auxiliary welding system and auxiliary welding method thereof

Abstract

A rotary positioner auxiliary welding system and an auxiliary welding method thereof, the auxiliary welding system is used for auxiliary welding work of a chassis suspension, which includes a transfer device, a welding device and an auxiliary device capable of fixing the chassis suspension, the auxiliary device including a main frame capable of rotating around a vertical axis, and side supports relatively arranged on both sides of the main frame and capable of flipping around a horizontal axis, the clamping and welding of the scissors chassis can be carried out simultaneously, and the welding angle can be adjusted during the welding process; the side supports include a fixed plate, which is provided with two groups of clamping modules capable of clamping the two ends and two sides of the chassis suspension respectively, one group of clamping modules is provided with a second top plate and a second pressure block at the tightening end, and when the second top plate presses against the side plate, the second pressure block can press against the side rod and the outer edge of the main board; the scissors chassis welded by the welding device can be turned downward, and the transfer and transportation work can be completed autonomously through the docking of the transfer device and the auxiliary device.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent welding, and in particular to a rotary positioner auxiliary welding system and an auxiliary welding method thereof. Background Art

[0002] The scissor lift chassis is an important component of the work vehicle or machinery. It plays the important role of bearing the weight of the entire equipment and ensuring the stability of the equipment operation and driving safety. The current scissor lift chassis are mostly welded. For example, the application document with application number CN201720499745.6 discloses a fully pneumatic three-axis positioner, which includes a first rotating shaft platform that can rotate horizontally, and a second positioning flip frame and a third positioning flip frame are relatively installed on the front and rear sides of the first rotating shaft platform. One side of the corresponding positions of the two positioning flip frames forms a loading and unloading station for the workpiece, and the other side forms a processing station for the workpiece, thereby realizing the positional welding of the workpiece.

[0003] The above-mentioned fully pneumatic three-axis positioner is also equipped with multiple fixtures on the positioning and flipping frame for clamping the workpiece to be processed. However, when it is in use, the disassembly and assembly of parts can only be completed manually. Especially after welding is completed, the workpiece usually has a high temperature residue, and the limitations of manual disassembly are still large.

[0004] Moreover, when the above-mentioned fully pneumatic three-axis positioner is used for welding work of the scissor-type chassis, the disassembly and assembly work will become more complicated, because the various components of the scissor-type chassis need to be fixed separately, resulting in that the assembly and fixation alone will take a lot of time to complete. At the same time, this method of installing and fixing each component separately is prone to misalignment when the positioning flip frame is flipped, affecting the molding quality of the scissor-type chassis. Summary of the Invention

[0005] In order to solve the technical problems existing in the above background technology, the present invention provides a rotary positioner auxiliary welding system and an auxiliary welding method thereof.

[0006] The technical solutions of the present invention are as follows:

[0007] The present invention first provides a rotary positioner auxiliary welding system, which is used for auxiliary welding work of chassis suspension. First, with regard to the structure of the chassis suspension, it includes a horizontally arranged rectangular main board, and the upper and lower parts of the two long sides of the main board are respectively provided with side rods and strip-shaped side panels along their length directions, wherein the plate surface of the side panel is perpendicular to the main board and is bent integrally with the main board. A fixing rod is connected between the two side rods, and a gap is reserved between the outer sides of the two side rods and the outer edge of the main board. The welding and fixing between the side rods and the main board, the side rods and the fixing rods, and the fixing rods and the main board are welded and fixed to finally complete the welding and forming work of the scissors chassis.

[0008] On the basis of the above-mentioned scissors-type chassis structure, the auxiliary welding system (the above-mentioned rotary positioner auxiliary welding system) includes an auxiliary device capable of fixing the chassis suspension, and a transfer device and a welding device relatively arranged on both sides thereof. The auxiliary device can complete the position fixing work of the various components of the scissors-type chassis (main board, side board, side rod and fixing rod). The welding device is configured to complete the welding connection work of the scissors-type chassis. Finally, the welded scissors-type chassis can be autonomously transported out through the docking of the transfer device and the auxiliary device.

[0009] First of all, let's talk about the structure of the auxiliary device. It includes a support and a main frame rotatably arranged on its upper side. Auxiliary fixing mechanisms are also provided on the opposite sides of the main frame. The auxiliary fixing mechanisms on both sides are configured to complete the fixation of the various components of the scissors chassis, and can switch positions between the transfer device and the welding device under the drive of the main frame. At the same time, a light-blocking plate is also vertically provided on the main frame between the two auxiliary fixing mechanisms. On the basis of the above structure, the scissors chassis that has completed clamping on the side close to the transfer device can be driven by the main frame to rotate to the side of the welding device to complete the welding work. When the scissors chassis close to the welding device side is welding, it does not affect the installation and fixation of the various components of the scissors chassis on the other side or the disassembly work of the welding forming inspection chassis, thereby ensuring that the welding processing work of the inspection chassis can be carried out quickly and efficiently.

[0010] As for the structure of the auxiliary fixing mechanism, it includes a side bracket which is rotatably connected to the main frame and can rotate around a horizontal axis. The side bracket includes a horizontally arranged fixed plate, and a plurality of fixing units capable of fixing the chassis suspension are provided on the upper surface thereof. Based on this structure, the rotation of the side bracket can drive the scissors chassis to rotate, thereby realizing the adjustment of the welding angle, thereby ensuring the welding quality of the scissors chassis.

[0011] As for the structure of the fixing unit, it includes a first clamping module that is relatively arranged and can clamp the two ends of the chassis suspension, and a second clamping module that can clamp the two sides of the chassis suspension, wherein the second clamping module includes a second cylinder and a second top plate arranged at its transmission end, a second pressure block is provided on the upper part of the side of the second top plate facing away from the second cylinder, and the second top plate is arranged to be able to press against the side plate under the action of the second cylinder, and the second pressure block is arranged to be able to press against the side rod under the action of the second cylinder, and the lower side presses the outer edge of the main board, when installing the various components of the scissor chassis. When the scissors chassis is turned over to dock with the transfer device, the second clamping module can also play a good supporting role on the main board of the scissors chassis, ensuring that the scissors chassis can be turned over stably under the drive of the auxiliary fixing mechanism. The fixation of the various components of the scissors chassis can be simpler and faster, and the positional relationship between the components can be more stable, effectively ensuring the quality of welding and forming.

[0012] As for the structure of the transfer device, it includes a transfer track and a transfer vehicle arranged thereon, the transfer vehicle includes a chassis, on which is slidably provided a scissor-type lifting frame that can extend into the lower side of the auxiliary fixing mechanism, the auxiliary fixing mechanism can drive the scissor-type chassis to rotate downward, and the welded scissor-type lifting frame can be lifted and lowered to receive the welded scissor-type chassis, and finally the scissor-type chassis is released through the action of the first clamping module and the second clamping module, and the scissor-type chassis is automatically disassembled after being formed. Even if the temperature of the scissor-type chassis is high after welding, the rapid transfer work can still be guaranteed.

[0013] As described above, a rotary positioner auxiliary welding system is a core technical concept of the present invention. A through hole is provided in the middle of the fixed plate, and the auxiliary fixing mechanism also includes a pre-tightening module corresponding to the through hole provided on the lower side of the fixed plate. The pre-tightening module can realize the pre-tightening and fixing of the mainboard.

[0014] Specifically speaking, the structure of the pre-tightening module includes a mounting frame, a first telescopic machine is vertically provided on the mounting frame, the first telescopic machine includes a first fuselage rotatably connected to the mounting frame and with a vertical rotation axis, a first telescopic column is vertically provided at the upper end of the first fuselage and passes through a through hole, the first telescopic column is hollow inside and has an upper end open, the pre-tightening module also includes a second telescopic machine, the second telescopic machine includes a second fuselage arranged inside the first telescopic column, a second telescopic column is vertically provided at the upper end of the second fuselage and passes through the first telescopic column, the outer sides of the upper ends of the first telescopic column and the second telescopic column are both provided with a clamping rod, and the clamping rods on the two telescopic columns are parallel. On the basis of the above structure Through the actions of the first telescopic machine and the second telescopic machine, in conjunction with the rotation of the first telescopic machine, the second telescopic column and the clamping rod at the upper end of the first telescopic column can be respectively pressed against the upper and lower sides of the mainboard, thereby clamping the mainboard. Based on this arrangement, during welding work, the clamping rod on the first telescopic column can play a major supporting role for the mainboard, and at the same time cooperate with the clamping rod on the second telescopic column to fix the mainboard. After welding is completed, when the inspection chassis is transported, the clamping rod on the second telescopic column can play a major tightening role on the mainboard, preventing the fixation of the scissor chassis from loosening or falling when the auxiliary fixing mechanism rotates, thereby ensuring that the welding and transportation of the inspection chassis can be carried out smoothly and stably.

[0015] As a preferred embodiment, the clamping rods located on the first telescopic column and the second telescopic column are respectively the first clamping rod and the second clamping rod, wherein the first clamping rod includes a vertically arranged vertical rod, and the lower end of the vertical rod is connected to the first telescopic column, and a cross rod is horizontally provided on the outer side of the upper end of the vertical rod, so that the cross rod part of the first clamping rod can be higher than the first telescopic column, thereby enabling the first clamping rod to more smoothly complete the work of tightening and fixing the mainboard.

[0016] As a further preferred embodiment, in order to make the cooperation of the two clamping rods smoother and thereby ensure that the mainboard can be better clamped therethrough, one end of the second clamping rod is connected to the second telescopic column, and the other end is aligned with the outer end of the cross bar.

[0017] More preferably, in order to further ensure the fixing effect of the pre-tightening unit on the mainboard, two groups of the first clamping rods and the second clamping rods are provided opposite to each other.

[0018] The rotary positioner auxiliary welding system as described above also includes a control device, and the auxiliary device also includes a first drive motor and a second drive motor that can respectively drive the main frame and the side frame to rotate, and the pre-tightening module also includes a third drive motor that can drive the first fuselage to rotate. The transfer device, welding device, first drive motor, second drive motor, first clamping module, second clamping module, first telescopic machine, second telescopic machine and third drive motor are all communicatively connected with the control device and can be controlled by the control device. Only manual installation and fixation of the various components of the scissors chassis are required, and the welding and transfer work of the scissors chassis can be carried out automatically, which effectively improves the welding efficiency.

[0019] The present invention also provides an auxiliary welding method. Based on the above auxiliary welding system, the welding method includes at least the following steps:

[0020] S1, installation;

[0021] Manually fix the materials required for welding the scissor chassis on the auxiliary fixing mechanism close to the transfer device;

[0022] S2, welding;

[0023] S2.1. The control device controls the first driving motor to operate, driving the two auxiliary fixing mechanisms to perform a position change through the main frame;

[0024] S2.2. The welding device performs welding work on the scissor lift chassis. At the same time, step S1 is executed once. After the welding work and material fixing work are completed, step S3 is continued.

[0025] During the welding process, the control device controls the second driving motor to operate and adjust the welding angle by swinging the auxiliary fixing mechanism to ensure the welding quality and the structural strength of the finished scissor chassis.

[0026] S3, receiving materials;

[0027] S3.1. Execute step S2.1 once;

[0028] S3.2. The control device controls the welding device to weld the scissor chassis. At the same time, the transfer vehicle moves to the docking position with the auxiliary fixing mechanism. After the docking and transfer of the scissor chassis are completed, step S1 is executed again. After the welding and material fixing work are completed, step S3.3 is continued.

[0029] During the welding process, the control device controls the second driving motor to operate and adjust the welding angle by swinging the auxiliary fixing mechanism to ensure the welding quality and the structural strength of the finished scissor chassis.

[0030] S3.3. Repeat steps S3.1-S3.2 until the scissor chassis is completely welded and transported.

[0031] In the auxiliary welding method described above, in order to ensure the pre-tightening and fixing effect of the pre-tightening module on the mainboard, the mainboard is further provided with a strip-shaped pre-tightening opening. The assembly method of step S1 specifically includes the following steps:

[0032] S1.1. Place the mainboard and side panels on the fixed plate, aligning the pre-tightening opening on the mainboard with the pre-tightening module. The first clamping module clamps the ends of the two side panels.

[0033] S1.2, the third driving motor is activated to rotate the clamping rod to align with the preload opening;

[0034] S1.3. The first and second telescopic mechanisms operate, and the levers at the upper ends of the second and first telescopic columns move to the upper and lower ends of the mainboard, respectively.

[0035] S1.4, the third driving motor is activated to rotate the clamping rod to a position offset from the preload opening;

[0036] S1.5. The first and second telescopic mechanisms operate until the clamping rods at the upper ends of the second telescopic column and the first telescopic column are respectively pressed against the upper and lower ends of the mainboard.

[0037] S1.6. Place the side bars and the fixing bars on the upper side of the mainboard. The second clamping module clamps the two side panels while clamping the two side bars and pressing the mainboard.

[0038] As a preferred embodiment, in order to ensure the fixing effect of the two side rods on the main board, in step S1.4, the clamping rod is perpendicular to the pre-tightening opening.

[0039] In order to ensure that the docking process between the auxiliary fixing mechanism and the transfer vehicle is smoother, so that the finished scissors-lift chassis can stably complete the transfer work, in step S3.2, after the transfer vehicle is docked with the auxiliary fixing mechanism, the first clamping module, the pre-tightening module and the second clamping module complete the release of the scissors-lift chassis in turn.

[0040] The beneficial effects of the present invention are:

[0041] 1) The scissor chassis that has been clamped on the side close to the transfer device can be driven by the main frame to move to the side of the welding device to complete the welding work. When the scissor chassis on the side close to the welding device is welded, it will not affect the installation and fixation of the components of the scissor chassis on the other side or the disassembly of the welding inspection chassis, ensuring that the welding processing work of the inspection chassis can be carried out quickly and efficiently;

[0042] 2) The rotation of the side bracket can drive the rotation of the scissor chassis, thereby adjusting the welding angle to ensure the welding quality of the scissor chassis;

[0043] 3) The second top plate and the second pressure block of the second clamping module can cooperate with each other. When the second top plate presses against the side plate, the second pressure block can press against the side rod, and the lower side presses against the outer edge of the main plate. In combination with the arrangement of the first clamping module, the fixing of the various components of the scissor chassis can be simpler and faster, and the positional relationship between the various components can be more stable, effectively ensuring the quality of welding and forming;

[0044] 4) The welded scissor chassis can be turned downward under the action of the auxiliary fixing mechanism. The welded scissor chassis can be taken up by the lifting of the scissor lift frame. The scissor chassis is released by the action of the two first clamping modules and the second clamping module. After the scissor chassis is formed, it can be disassembled independently. Even if the temperature of the scissor chassis is high after welding, the rapid transportation work can still be guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] By reading the detailed description of the preferred embodiment below, the solutions and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0046] In the attached figure:

[0047] Figure 1 Schematic diagram of the structure of the auxiliary welding system in the embodiment;

[0048] Figure 2 Schematic diagram of the structure of the scissor chassis in the embodiment;

[0049] Figure 3 Schematic diagram of the structure of the auxiliary device in the embodiment;

[0050] Figure 4 This is a structural diagram of the auxiliary fixing mechanism in the embodiment;

[0051] Figure 5 This is a schematic structural diagram of the second clamping module in the embodiment;

[0052] Figure 6 Schematic diagram of the cooperation and fixing method of the second clamping module and the scissor chassis in the embodiment;

[0053] Figure 7 This is a structural diagram of a pre-tightening module in an embodiment;

[0054] Figure 8 Schematic diagram of the cooperation between the first telescopic machine and the second telescopic machine in the embodiment;

[0055] The components represented by the reference numerals in the figure are:

[0056] 1. Auxiliary device; 11. Main frame; 12. Auxiliary fixing mechanism; 121. Rotating frame; 122. Fixing plate; 123. First clamping module; 124. Second clamping module; 1241. Second cylinder; 1242. Second top plate; 1243. Second pressure block; 125. Stop block; 126. First clamping module; 127. Second clamping module; 128. Pre-tightening module; 1281. Mounting frame; 1282. First telescopic machine; 1283. Third driving machine; 1284. Second telescopic machine; 13. Light baffle; 14. Second driving machine; 15. Limiting support mechanism; 2. Transfer device; 21. Transfer track; 22. Transfer vehicle; 3. Welding device; 4. Scissor chassis; 41. Main board; 411. Pre-tightening port; 42. Side plate; 43. Side rod; 44. Fixing rod. DETAILED DESCRIPTION

[0057] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0058] Example

[0059] This embodiment first provides a rotary positioner auxiliary welding system, see Figure 1 and Figure 2 , used for auxiliary welding work of chassis suspension. The following is a detailed description of the structure of the auxiliary welding system (the above-mentioned rotary positioner auxiliary welding system) in combination with the structure of the chassis suspension.

[0060] In this embodiment, combined with Figure 2 , first of all, let’s talk about the structure of the chassis suspension. It includes a horizontally arranged rectangular main board 41, and the upper and lower parts of the two long sides of the main board 41 are respectively provided with side rods 43 and strip-shaped side panels 42 along their length directions, wherein the plate surface of the side panels 42 is perpendicular to the main board 41, and is bent and formed as one piece with the main board 41, and a fixing rod 44 is connected between the two side rods 43, and a gap is reserved between the outer sides of the two side rods 43 and the outer edge of the main board 41. By welding and fixing the side rods 43 to the main board 41, the side rods 43 to the fixing rods 44, and the fixing rods 44 to the main board 41, the welding and forming work of the scissors chassis 4 can be finally completed.

[0061] In this embodiment, based on the above-mentioned scissor chassis 4 structure, Figure 1 The auxiliary welding system includes an auxiliary device 1 capable of fixing the chassis suspension, and a transfer device 2 and a welding device 3 arranged on both sides thereof. The auxiliary device 1 can complete the position fixing work of the components of the scissors-type chassis 4 (main board 41, side board 42, side rod 43 and fixing rod 44). The welding device 3 is configured to complete the welding connection work of the scissors-type chassis 4. Finally, the welded scissors-type chassis 4 can be independently transported out through the docking of the transfer device 2 and the auxiliary device 1.

[0062] First, let's talk about the structure of the auxiliary device 1. Figure 3 The first driving mechanism 12 is a driving mechanism that can be used to drive the main frame 11 to rotate around the vertical axis, and the first driving mechanism 12 is a driving mechanism that can be used to drive the main frame 11 to rotate around the vertical axis. The two opposite sides of the main frame 11 are provided with auxiliary fixing mechanisms 12. The auxiliary fixing mechanisms 12 on both sides can switch positions between the transfer device 2 and the welding device 3 under the drive of the main frame 11, and the auxiliary fixing mechanisms 12 on both sides are configured to complete the fixation of the various components of the scissors chassis 4. At the same time, a light baffle 13 is also vertically provided on the main frame 11 between the two auxiliary fixing mechanisms 12. On the basis of the above structure, the scissors chassis 4 that has completed the clamping near the side of the transfer device 2 can be rotated to the side of the welding device 3 under the drive of the main frame 11 to complete the welding work. When the scissors chassis 4 near the side of the welding device 3 is performing welding work, it does not affect the installation and fixation of the various components of the scissors chassis 4 on the other side or the disassembly work of the welding forming inspection chassis, thereby ensuring that the welding processing work of the inspection chassis can be carried out quickly and efficiently.

[0063] Further, combined with Figure 4 As for the structure of the auxiliary fixing mechanism 12, it includes a side bracket rotatably connected to the main frame 11 and capable of rotating around a horizontal axis. The auxiliary device 1 also includes a second driving motor 14 capable of driving the side bracket to rotate. The side bracket includes a rotating frame 121 and a fixed plate 122 horizontally arranged thereon. The upper plate surface of the fixed plate 122 is provided with a plurality of relatively arranged blocks 125. The main board 41 and the side plates 42 can be placed between the relatively arranged blocks 125, and the side plates 42 are tightly pressed against the blocks 125 to complete the position fixing work in the width direction of the main board 41. The fixed plate 122 is also provided with a plurality of fixing units capable of fixing the chassis suspension. On the basis of this structure, the rotation of the side bracket can drive the scissors chassis 4 to rotate, thereby realizing the adjustment of the welding angle, thereby ensuring the welding quality of the scissors chassis 4.

[0064] Furthermore, as for the structure of the fixing unit, it includes a first clamping module 123 that is arranged opposite to each other and can clamp the two ends of the chassis suspension, and a second clamping module 124 that can clamp the two sides of the chassis suspension.

[0065] Specifically, four first clamping modules 123 are provided in pairs facing each other, and include a first cylinder and a first top plate provided at a transmission end thereof, and the first top plate is configured to be able to press against the end of the side plate 42 under the action of the first cylinder.

[0066] Combine Figure 4,, the second clamping modules 124 are provided with at least four pairs of opposite, which include a second cylinder 1241 and a second top plate 1242 provided at its transmission end, the second top plate 1242 is provided with a second pressing block 1243 on the upper part of the side away from the second cylinder 1241, combined with Figure 6 The second top plate 1242 is configured to be able to press against the side plate 42 under the action of the second cylinder 1241, and the second pressure block 1243 is configured to be able to press against the side rod 43 under the action of the second cylinder 1241, and the lower side presses the outer edge of the main board 41. When the various components of the scissor fork chassis 4 are installed, the two ends of the side rod 43 can be pre-clamped by the first clamping module 123, thereby completing the fixation of the main board 41 and the side plate 42. Then, the side rod 43 and the fixing rod 44 are clamped by the second clamping module 124, and the main board 41 can be pressed. When the auxiliary fixing mechanism 12 drives the scissor fork chassis 4 to flip downward and dock with the transfer device 2, the second clamping module 124 can also play a good supporting role for the main board 41 of the scissor fork chassis 4, ensuring that the scissor fork chassis 4 can be stably flipped under the drive of the auxiliary fixing mechanism 12, and the fixation of the various components of the scissor fork chassis 4 can be simpler and faster, and the positional relationship between the components can be more stable, effectively ensuring the welding forming quality.

[0067] In this embodiment, combined with Figure 7 and Figure 8 As a core technical concept of the present invention, a through hole is further provided in the middle of the fixing plate 122, and the auxiliary fixing mechanism 12 also includes a pre-tightening module 128 corresponding to the through hole provided on the lower side of the fixing plate 122, through which the pre-tightening and fixing of the main board 41 can be achieved.

[0068] Specifically speaking, the structure of the pre-tightening module 128 includes a mounting frame 1281 fixed to the lower side of the fixing plate 122, and a first telescopic machine 1282 is vertically provided on the mounting frame 1281. The first telescopic machine 1282 includes a first fuselage rotatably connected to the mounting frame 1281 and with a vertical rotation axis. The pre-tightening module 128 also includes a third driving machine 1283 provided on the mounting frame 1281 and capable of driving the first fuselage to rotate. A first telescopic column passing through a through hole is vertically provided at the upper end of the first fuselage, and the first telescopic column is hollow inside and has an open upper end; the pre-tightening module 128 also includes a second telescopic machine 1284, and the second telescopic machine 1284 includes a second fuselage provided inside the first telescopic column, and a second telescopic column passing through the first telescopic column is vertically provided at the upper end of the second fuselage. There are clamping rods on the outer sides of the ends, and the clamping rods on the two telescopic columns are parallel. On the basis of the above structure, through the action of the first telescopic machine 1282 and the second telescopic machine 1284, and in coordination with the rotation of the first telescopic machine 1282, the clamping rods at the upper ends of the second telescopic column and the first telescopic column can be respectively pressed against the upper and lower sides of the main board 41, thereby clamping the main board 41. Based on this arrangement, when welding, the clamping rod on the first telescopic column can play a major supporting role for the main board 41, and at the same time cooperate with the clamping rod on the second telescopic column to fix the main board 41. After the welding is completed, when the inspection chassis is transported, the clamping rod on the second telescopic column can play a major tightening role on the main board 41, preventing the fixation of the scissors chassis 4 from loosening or falling when the auxiliary fixing mechanism 12 rotates, thereby ensuring that the welding and transportation of the inspection chassis can be carried out smoothly and stably.

[0069] As a preferred embodiment, the clamping rods located on the first telescopic column and the second telescopic column are respectively the first clamping rod and the second clamping rod, wherein the first clamping rod includes a vertically arranged vertical rod, and the lower end of the vertical rod is connected to the first telescopic column, and a cross rod is horizontally provided on the outer side of the upper end of the vertical rod, so that the cross rod part of the first clamping rod can be higher than the first telescopic column, thereby enabling the first clamping rod to more smoothly complete the work of tightening and fixing the mainboard 41.

[0070] As a further preferred embodiment, in order to make the cooperation between the two clamping rods smoother and thereby ensure that the mainboard 41 can be better clamped therethrough, one end of the second clamping rod is connected to the second telescopic column, and the other end is aligned with the outer end of the cross bar.

[0071] More preferably, in order to further ensure the fixing effect of the pre-tightening unit on the main board 41, two groups of the first clamping rods and the second clamping rods are provided opposite to each other.

[0072] In this embodiment, as for the structure of the transfer device 2, it includes a transfer track 21 and a transfer vehicle 22 arranged thereon. The transfer vehicle 22 includes a base frame, on which a scissor-type lifting frame is slidingly provided that can extend into the lower side of the auxiliary fixing mechanism 12. The auxiliary fixing mechanism 12 can drive the scissors-type chassis 4 to turn downward, and the welded scissors-type lifting frame can be lifted and lowered to receive the welded scissors-type chassis 4. Finally, the scissors-type chassis 4 is released through the action of the first clamping module 123 and the second clamping module 124, and the scissors-type chassis 4 is automatically disassembled after being formed. Even if the temperature of the scissors-type chassis 4 is high after welding, the rapid progress of the transfer work can still be guaranteed.

[0073] In this embodiment, the welding device 3 can be a welding robot arm, and the auxiliary welding system also includes a control device. The transfer vehicle 22 of the transfer device 2, the welding device 3 (welding robot arm), the first driving machine, the second driving machine 14, the third driving machine 1283, the first cylinder of the first clamping module 123, the second cylinder 1241 of the second clamping module 124, the first telescopic machine 1282 and the second telescopic machine 1284 are all communicatively connected to the control device and can be controlled by the control device. Only manual installation and fixation of the various components of the scissors chassis 4 are required, and the welding and transfer work of the scissors chassis 4 can be carried out automatically, which effectively improves the welding efficiency.

[0074] This embodiment also provides an auxiliary welding method. This welding method is based on the above-mentioned auxiliary welding system. To ensure that the pre-tightening module 128 pre-tightens the main board 41 when the scissor chassis 4 is installed and fixed, the main board 41 is further provided with a strip-shaped pre-tightening opening 411. The welding method includes at least the following steps:

[0075] S1, installation;

[0076] Manually fix the materials required for welding the scissor chassis 4 on the auxiliary fixing mechanism 12 close to the side of the transfer device 2. Specifically:

[0077] S1.1. Place the main plate 41 and the side plates 42 on the fixed plate 122, aligning the pre-tightening opening 411 on the main plate 41 with the pre-tightening module 128. The control device controls the first clamping module 123 to clamp the ends of the two side plates 42.

[0078] S1.2. The control device controls the third driving motor 1283 to rotate the clamping rod until it is aligned (parallel) with the preload opening 411.

[0079] S1.3. The control device controls the first telescopic mechanism 1282 and the second telescopic mechanism 1284 to operate until the levers at the upper ends of the second telescopic column and the first telescopic column move to the upper and lower ends of the main plate 41, respectively.

[0080] S1.4. The control device controls the third driving motor 1283 to rotate the clamping rod to a position offset from (non-parallel to) the preload opening 411.

[0081] S1.5. The control device controls the first telescopic mechanism 1282 and the second telescopic mechanism 1284 to operate until the clamping rods at the upper ends of the second telescopic column and the first telescopic column respectively press against the upper and lower ends of the main board 41.

[0082] S1.6. Place the side bars 43 and the fixing bars 44 on the upper side of the main plate 41. The control device controls the second clamping module 124 to clamp the two side plates 42, clamp the two side bars 43, and press the main plate 41.

[0083] S2, welding;

[0084] S2.1. The control device controls the first driving motor to operate, driving the two auxiliary fixing mechanisms 12 to perform a transposition through the main frame 11;

[0085] S2.2, the welding device 3 performs welding work on the scissor lift chassis 4. At the same time, step S1 is executed once. After the welding work and material fixing work are completed, step S3 is continued.

[0086] During the welding process, the control device controls the second driving motor 14 to operate, and adjusts the welding angle by swinging the auxiliary fixing mechanism 12 to ensure the welding quality and the structural strength of the finished scissor chassis 4;

[0087] S3, receiving materials;

[0088] S3.1. Execute step S2.1 once;

[0089] S3.2. The control device controls the welding device 3 to weld the scissor-type chassis 4. At the same time, the transfer vehicle 22 is controlled to move to a docking position with the auxiliary fixing mechanism 12. After the docking and transfer of the scissor-type chassis 4 are completed, step S1 is executed again. After the welding and material fixing work are completed, step S3.3 is continued.

[0090] During the welding process, the control device controls the second driving motor 14 to operate, and adjusts the welding angle by swinging the auxiliary fixing mechanism 12 to ensure the welding quality and the structural strength of the finished scissor chassis 4;

[0091] S3.3. Repeat steps S3.1-S3.2 until the scissor chassis 4 is completely welded and transported.

[0092] As a preferred embodiment, in order to ensure the fixing effect of the two side rods 43 on the main board 41, in step S1.4, the clamping rods are perpendicular to the pre-tightening openings 411.

[0093] As a further preference, in order to ensure that the docking process between the auxiliary fixing mechanism 12 and the transfer vehicle 22 is smoother, so that the finished scissors-type chassis 4 can stably complete the transfer work, in step S3.2, after the transfer vehicle 22 is docked with the auxiliary fixing mechanism 12, that is, after the scissors-type lifting frame rises to contact with the scissors-type chassis 4, the first clamping module 123, the pre-tightening module 128 and the second clamping module 124 successively complete the release of the scissors-type chassis 4.

[0094] In this embodiment, the auxiliary device 1 also includes a limiting support mechanism 15 circumferentially arranged below the main frame 11, which is configured to complete the support work of the main frame 11 from the lower side of the main frame 11 when the main frame 11 stops rotating, thereby ensuring that the disassembly and assembly and welding work of the scissors chassis 4 can be carried out stably.

Claims

1. A rotary positioner auxiliary welding system for auxiliary welding of chassis suspension, characterized by: The chassis suspension comprises a horizontally arranged rectangular main board (41), and the upper and lower parts of the two long sides of the main board (41) are respectively provided with side rods (43) and strip-shaped side panels (42) along the length direction thereof, wherein the plate surface of the side panels (42) is perpendicular to the main board (41), a fixing rod (44) is connected between the two side rods (43), and a gap is reserved between the outer sides of the two side rods (43) and the outer edge of the main board (41); The auxiliary welding system includes an auxiliary device (1) capable of fixing a chassis suspension, and a transfer device (2) and a welding device (3) arranged on both sides thereof; The auxiliary device (1) includes a support and a main frame (11) rotatably arranged on its upper side. Auxiliary fixing mechanisms (12) are also provided on opposite sides of the main frame (11). The two auxiliary fixing mechanisms (12) are configured to be able to switch positions between the transfer device (2) and the welding device (3) under the drive of the main frame (11). A light shielding plate (13) is also vertically provided on the main frame (11) between the two auxiliary fixing mechanisms (12). The auxiliary fixing mechanism (12) includes a side bracket rotatably connected to the main frame (11) and capable of rotating about a horizontal axis, the side bracket including a horizontally arranged fixing plate (122), the upper surface of which is provided with a plurality of fixing units capable of fixing the chassis suspension; The fixing unit comprises a first clamping module (123) which is arranged opposite to each other and can clamp both ends of the chassis suspension, and a second clamping module (124) which can clamp both sides of the chassis suspension; The second clamping module (124) includes a second cylinder (1241) and a second top plate (1242) provided at the transmission end thereof, a second pressing block (1243) is provided on the upper portion of the side of the second top plate (1242) facing away from the second cylinder (1241), and the second top plate (1242) is configured to be able to press against the side plate (42) under the action of the second cylinder (1241), and the second pressing block (1243) is configured to be able to press against the side rod (43) under the action of the second cylinder (1241), and the lower side presses the outer edge of the main plate (41); The transfer device (2) includes a transfer track (21) and a transfer vehicle (22) arranged thereon, wherein the transfer vehicle (22) includes a base frame on which a scissor-type lifting frame capable of extending into the lower side of the auxiliary fixing mechanism (12) is slidably provided; The welding device (3) is configured to complete the welding connection work of the scissor-type chassis (4).

2. The rotary positioner assisted welding system according to claim 1, characterized in that: A through hole is provided in the middle of the fixing plate (122), and the auxiliary fixing mechanism (12) further comprises a pre-tightening module (128) provided on the lower side of the fixing plate (122) corresponding to the through hole; The pre-tightening module (128) comprises a mounting frame (1281) on which a first telescopic machine (1282) is vertically provided. The first telescopic machine (1282) comprises a first fuselage rotatably connected to the mounting frame (1281) and with a vertical rotation axis. A first telescopic column is vertically provided on the upper end of the first fuselage and passes through a through hole. The first telescopic column is hollow inside and open at the top, the pre-tightening module (128) further comprises a second telescopic machine (1284), the second telescopic machine (1284) comprises a second body arranged inside the first telescopic column, a second telescopic column is vertically provided at the top of the second body and extends through the first telescopic column; A clamping rod is provided on the outer side of the upper end of each of the first telescopic column and the second telescopic column, and the clamping rods on the two telescopic columns are parallel.

3. The rotary positioner assisted welding system according to claim 2, characterized in that: The clamping rods located on the first telescopic column and the second telescopic column are respectively the first clamping rod and the second clamping rod; The first clamping rod includes a vertical rod which is arranged vertically and connected to the first telescopic column at the lower end, and a horizontal rod is horizontally arranged on the outer side of the upper end of the vertical rod.

4. The rotary positioner assisted welding system according to claim 3, characterized in that: One end of the second clamping rod is connected to the second telescopic column, and the other end is aligned with the outer end of the cross bar.

5. The rotary positioner assisted welding system according to claim 3, characterized in that: The first clamping rods and the second clamping rods are provided in two opposite groups.

6. A rotary positioner assisted welding system according to any one of claims 2 to 5, characterized in that: The auxiliary device (1) further comprises a control device, the auxiliary device (1) further comprises a first driving machine and a second driving machine (14) capable of driving the main frame (11) and the side frame to rotate respectively, and the pre-tightening module (128) further comprises a third driving machine (1283) capable of driving the first fuselage to rotate; The transfer device (2), welding device (3), first drive motor, second drive motor (14), first clamping module (123), second clamping module (124), first telescopic machine (1282), second telescopic machine (1284) and third drive motor (1283) are all communicatively connected to the control device.

7. An auxiliary welding method, based on the rotary positioner auxiliary welding system according to claim 6, characterized in that: At least the following steps are included: S1, installation; Manually fix the materials required for welding the scissor chassis (4) on the auxiliary fixing mechanism (12) on the side close to the transfer device (2); S2, welding; S2.1, the control device controls the first driving motor to operate, and drives the two auxiliary fixing mechanisms (12) to perform a position change through the main frame (11); S2.2, the welding device (3) performs welding work on the scissor chassis (4), and at the same time, executes step S1 once, until the welding work and material fixing work are all completed, and then continues to run step S3; When welding is in progress, the control device controls the second driving machine (14) to operate, and adjusts the welding angle by swinging the auxiliary fixing mechanism (12); S3, receiving materials; S3.

1. Execute step S2.1 once; S3.2, the control device controls the welding device (3) to perform welding work on the scissor chassis (4), and at the same time, the transfer vehicle (22) moves to the docking position with the auxiliary fixing mechanism (12), and after completing the docking and transfer work of the scissor chassis (4), step S1 is executed again until the welding work and the material fixing work are all completed, and then step S3.3 is continued; When welding is in progress, the control device controls the second driving machine (14) to operate, and adjusts the welding angle by swinging the auxiliary fixing mechanism (12); S3.3, repeat steps S3.1-S3.2 until the scissor chassis (4) is completely welded and transported.

8. An auxiliary welding method according to claim 7, characterized in that: The main plate (41) and the side plate (42) are integrally bent and formed. The main plate (41) is also provided with a strip-shaped pre-tightening opening (411). The assembly method of step S1 specifically includes the following steps: S1.

1. Place the main plate (41) and the side plate (42) on the fixed plate (122), align the pre-tightening opening (411) on the main plate (41) with the pre-tightening module (128), and operate the first clamping module (123) to clamp the two ends of the two side plates (42); S1.2, the third driving motor (1283) is actuated to rotate the clamping rod to align with the preload opening (411); S1.3, the first telescopic machine (1282) and the second telescopic machine (1284) are actuated, until the clamping rods at the upper ends of the second telescopic column and the first telescopic column respectively move to the upper and lower sides of the main board (41); S1.4, the third driving motor (1283) is actuated to rotate the clamping rod to a position offset from the preload opening (411); S1.5, the first telescopic machine (1282) and the second telescopic machine (1284) are operated until the clamping rods at the upper ends of the second telescopic column and the first telescopic column are respectively pressed against the upper and lower ends of the main board (41) S1.

6. Place the side rods (43) and the fixing rods (44) on the upper side of the main board (41), and drive the second clamping module (124) to clamp the two side plates (42) while clamping the two side rods (43) and pressing the main board (41).

9. An auxiliary welding method according to claim 8, characterized in that: In step S1.4, the clamping rod is perpendicular to the pre-tightening opening (411).

10. An auxiliary welding method according to claim 8, characterized in that: In step S3.2, after the transfer vehicle (22) is docked with the auxiliary fixing mechanism (12), the first clamping module (123), the pre-tightening module (128), and the second clamping module (124) sequentially complete the release of the scissor chassis (4).

Images