A multifunctional mobile welding tooling device

Abstract

A multifunctional mobile welding tooling device is used for auxiliary fixing of a scissors-type chassis to be welded, comprising a rectangular base with two sets of fixing units provided at opposite ends of its upper portion, both fixing units including a fixing frame that can slide along the length direction of the base, clamping units are also provided on both sides of the upper portion of the base, the clamping units include a mounting plate that can slide along the width direction of the base, namely a fourth fixing frame and a fifth fixing frame provided thereon, an intermediate fixing mechanism is also provided in the middle portion of the upper portion of the base, the entire scissors-type chassis can be fixed by the two fixing units, the clamping unit and the intermediate fixing mechanism to ensure that subsequent welding work can proceed smoothly, the first fixing frame and the second fixing frame can slide along the length direction of the base, the mounting plate can drive the fourth fixing frame and the fifth fixing frame to slide along the width direction of the base, so that the device can be suitable for welding scissors-type chassis of different specifications and sizes.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, in particular to a multifunctional mobile welding tooling device. Background Art

[0002] In the welding work of the scissors chassis, it is usually necessary to first place the bottom plate of the scissors chassis on the base with threaded holes, and then fix the bottom plate to the base with bolts, and then complete the spot welding pre-connection work of the side panels and other components, and finally complete the welding connection work of the scissors chassis as a whole. This kind of welding connection method, on the one hand, is difficult to assemble in place at one time due to the large mass of the various components of the chassis, and during the welding work, the spot welding pre-connection method can easily cause the position of the components to shift, affecting the welding quality. On the other hand, the structure of the scissors chassis is basically the same, but its specifications will change when it is applied to different equipment, which further makes the welding work of the scissors chassis more difficult to complete, affecting the welding forming efficiency of the scissors chassis. Summary of the Invention

[0003] In order to solve the technical problems existing in the above-mentioned background technology, the present invention provides a multifunctional mobile welding tooling device.

[0004] The technical solutions of the present invention are as follows:

[0005] A multifunctional mobile welding tooling device is used for assisting in fixing a scissors-type chassis to be welded. It includes a rectangular base and a fastening system arranged thereon. The fastening system includes end fixing mechanisms arranged at both ends of the base, side fixing mechanisms arranged on both sides of the base, and an intermediate fixing mechanism arranged in the middle of the base. The bottom plate of the scissors-type chassis can be fixed to the base through the intermediate fixing mechanism, and the side plates and end plates can be fixed respectively through the side fixing mechanism and the end fixing mechanism, thereby assisting in completing the welding of the entire scissors-type chassis.

[0006] As for the structure of the end fixing mechanism, it includes a first fixing unit and a second fixing unit relatively arranged at both ends of the base, the first fixing unit and the second fixing unit respectively include a first fixing frame and a second fixing frame slidingly arranged along the length direction of the base, wherein the first fixing unit also includes a hook, and the hook can be used to complete the fixing work of the end plate of the scissors chassis and the first fixing frame, the second fixing frame includes a first supporting frame, a first plug column is provided on the upper side of the first fixing frame, and the first plug column can be used to plug and cooperate with the scissors chassis to complete the supporting work of the scissors chassis away from the end plate, and on the basis of this structure, through the sliding setting of the first fixing frame and the second fixing frame, in cooperation with the fixing work of the base plate by the intermediate fixing mechanism, the end plate welding work of scissors chassis of different lengths can be completed more conveniently.

[0007] As a preferred embodiment, the second fixing unit also includes a third fixing frame slidingly arranged on the inner side of the second fixing frame along the length direction of the base, and a first clamping cylinder that can drive the third fixing frame to slide is provided between the third fixing frame and the base. Through the cooperation of the third fixing frame and the first clamping cylinder, the third fixing frame can pass through the base plate from bottom to top and tighten the side plates of the scissors chassis to improve the fixing effect of the scissors chassis.

[0008] As for the structure of the side fixing mechanism, it includes clamping units relatively arranged on both sides of the base, and the clamping unit includes a mounting plate slidingly arranged along the width direction of the base, on which a fourth fixing frame and a fifth fixing frame are provided, and the fifth fixing frame includes a second clamping cylinder, which is configured to be able to clamp and fix the scissors chassis to the fourth fixing frame on the opposite side, and on the basis of this structure, through the sliding setting of the mounting plate, combined with the clamping effect of the fifth fixing frame, the side plate welding work of the scissors chassis of different widths can be completed more conveniently.

[0009] As a preferred embodiment, in order to better complete the fixing work of the scissors chassis through the end fixing mechanism and the side fixing mechanism, a limiting column that can press against the first fixing frame, the second fixing frame and the outer side of the mounting plate is also inserted on the base.

[0010] The cam is connected to the first and second clamping seats via a hinged connection, and the second clamping unit is connected to the first and second clamping seats via a hinged connection.

[0011] In summary, the above-mentioned welding fixture device can more stably complete the overall fixing work of the scissors chassis through the end fixing mechanism, the side fixing mechanism and the middle fixing mechanism, so as to ensure that the subsequent welding connection work can be more convenient. At the same time, the first fixing frame and the second fixing frame can slide along the length direction of the base, and the mounting plate can drive the fourth fixing frame and the fifth fixing frame to slide along the width direction of the base, so that the device can be suitable for the welding work of scissors chassis of different specifications and sizes.

[0012] In order to further ensure the fixing effect of the scissor chassis, a multifunctional mobile welding fixture device as described above is also provided with a fifth fixing frame on both sides of the base and located near the first fixing unit and the second fixing unit.

[0013] As a preferred embodiment, a second auxiliary positioning unit is further provided on one side of the two fifth fixing frames close to the first fixing unit, and the second auxiliary positioning unit includes a second auxiliary frame and a positioning cylinder arranged laterally thereon, and the driving end of the positioning cylinder is provided with a positioning column that can be inserted into the scissors fork chassis and can clamp the scissors fork chassis. Through the second auxiliary positioning unit, the scissors fork chassis can be clamped while the side panel is positioned, so that the subsequent welding process can be carried out more smoothly.

[0014] As a further preferred embodiment, a third auxiliary positioning unit is provided on one side of the two fifth fixing frames close to the second fixing unit, and the third auxiliary positioning unit includes a third auxiliary frame and a second positioning rod laterally arranged on one side thereof, and the outer end spiral of the second positioning rod is provided with a second positioning screw that can be tightened against the end of the scissors chassis, and the second positioning screw can complete the tightening and fixing of the scissors chassis.

[0015] More preferably, in order to prevent the provision of the third auxiliary positioning unit from affecting the placement of the scissors chassis, the second positioning rod is hingedly connected to the third auxiliary frame.

[0016] As described above, in a multifunctional mobile welding tooling device, the clamping unit also includes a first auxiliary positioning frame arranged on one side of the fourth fixed frame, the first auxiliary positioning frame includes a first auxiliary frame and a first positioning rod arranged laterally on one side thereof, and the outer end spiral of the first positioning rod is provided with a first positioning screw that can press against the end of the scissors fork chassis, and the first positioning screw can complete the pressing and fixing work of the scissors fork chassis.

[0017] As a preferred embodiment, in order to prevent the setting of the first auxiliary positioning frame from affecting the placement of the scissors chassis, the first positioning rod is hingedly connected to the first auxiliary frame.

[0018] As described above, a multifunctional mobile welding tooling device is provided, in order to make it easier to adjust the positions of the first fixing bracket and the second fixing bracket along the length direction of the base, and the position of the mounting plate along the width direction of the base, a plurality of sockets are provided at both ends of the base along the length direction, and at both sides of the base along the width direction, and the limiting column is configured to be able to be plugged into and matched with any socket.

[0019] As described above, a multifunctional mobile welding tooling device, in order to prevent the bottom plate from being offset when the first clamping unit is working, the first clamping unit also includes a positioning seat arranged on the outside of the first clamping seat, and a second plug-in column is provided on the upper side thereof that can be plugged into and cooperated with the bottom plate of the scissors chassis.

[0020] In the multifunctional mobile welding fixture device as described above, in order to ensure the pressing effect of the first pressing rods, there are at least three of them arrayed around the circumference of the driving disk.

[0021] The beneficial effects of the present invention are as follows: the present invention is a multifunctional mobile welding tooling device, which can more stably complete the fixing work of the entire scissor chassis through the end fixing mechanism, the side fixing mechanism and the middle fixing mechanism, so as to ensure that the subsequent welding connection work can be more convenient. At the same time, the first fixing frame and the second fixing frame can slide along the length direction of the base, and the mounting plate can drive the fourth fixing frame and the fifth fixing frame to slide along the width direction of the base, so that the device can be suitable for the welding work of scissor chassis of different specifications and sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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.

[0023] In the attached figure:

[0024] Figure 1 Schematic diagram of the structure of the welding tooling device in the embodiment;

[0025] Figure 2 for Figure 1 A top view of

[0026] Figure 3 This is a schematic structural diagram of the first fixing unit in the embodiment;

[0027] Figure 4 This is a schematic structural diagram of the hook in the embodiment;

[0028] Figure 5 is a structural schematic diagram of the second fixing unit in the embodiment;

[0029] Figure 6 for Figure 5 A top view of

[0030] Figure 7 for Figure 5 The main view;

[0031] Figure 8 Schematic diagram of the structure of the second fixing frame in the embodiment;

[0032] Figure 9 2 is a schematic structural diagram of the third fixing frame in the embodiment;

[0033] Figure 10 Schematic diagram of the structure of the clamping unit in the embodiment;

[0034] Figure 11 2 is a schematic structural diagram of the fifth fixing frame in the embodiment;

[0035] Figure 12 Schematic diagram of the structure of the first auxiliary positioning frame in the embodiment;

[0036] Figure 13 Schematic diagram of the structure of the first pressing unit in the embodiment;

[0037] Figure 14 Schematic diagram of the structure of the second pressing unit in the embodiment;

[0038] Figure 15 Schematic diagram of the driving structure of the second pressing unit in the embodiment;

[0039] Figure 16 Schematic diagram of the structure of the scissor chassis in the embodiment;

[0040] Figure 17 for Figure 16 A top view of

[0041] Figure 18 Schematic diagram of the coordination structure between the scissor lift chassis and the welding fixture device in the embodiment;

[0042] The components represented by the reference numerals in the figure are:

[0043] 1. Base; 2. First fixing unit; 21. First guide rail; 22. First fixing frame; 221. Fixed horizontal plate; 23. Hook; 231. Hook body; 232. Movable rod; 233. Clamping screw; 3. Second fixing unit; 31. Second guide rail; 32. Second fixing frame; 321. First supporting frame; 322. First abutting frame; 33. Third fixing frame; 331. Second supporting frame; 332. Second abutting frame; 34. First abutting cylinder; 4. Clamping unit; 41. Third guide rail; 42. Mounting plate; 43. Fourth fixing frame; 44. Fifth fixing frame; 441. First main frame; 442. Second abutting cylinder; 443. Abutting rod; 45. First auxiliary positioning frame; 451. First auxiliary frame; 452. A positioning rod; 453, a first positioning screw; 454, a limit knob; 5, a limit column; 6, a first clamping unit; 61, a first clamping frame; 611, a first clamping seat; 612, a first clamping cylinder; 613, a driving plate; 614, a first clamping rod; 615, a hinged rod; 62, a supporting limit frame; 621, a positioning seat; 622, a second plug column; 7, a second clamping unit; 71, a second clamping frame; 72, a second clamping cylinder; 73, a second clamping rod; 74, a supporting rod; 8, a second auxiliary positioning unit; 9, a third auxiliary positioning unit; 10, a scissors chassis; 101, a bottom plate; 1011, a round opening; 1012, a square opening; 102, a side plate; 103, an end plate; 104, a side support; 105, a reinforcing plate. DETAILED DESCRIPTION

[0044] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.

[0045] Example: This embodiment provides a multifunctional mobile welding tooling device, combined with Figure 16-Figure 18 , used for auxiliary fixing of the scissors chassis 10 to be welded.

[0046] First, let’s talk about the structure of the inspection chassis. It includes a horizontally arranged bottom plate 101 and side plates 102 relatively arranged on both sides of the upper part of the bottom plate 101. End plates 103 are also provided between the upper side of one end of the bottom plate 101 and the side plates 102 on both sides. A square opening 1012 is provided in the middle of the bottom plate 101, and a circular opening 1011 is also provided on the bottom plate 101 between the square opening 1012 and the end plates 103. Side supports 104 are provided on both sides of the side plates 102. When the scissors chassis 10 is in use, it can be assembled with other equipment through the side supports 104 and the bottom plate 101. In order to ensure the stability of the scissors chassis 10, a U-shaped reinforcement plate 105 is also connected between the side plates 102 and the bottom plate 101.

[0047] On the basis of the above scissor chassis 10 structure, combined with Figure 1 and Figure 2The welding fixture device (the above-mentioned multifunctional mobile welding fixture device) includes a rectangular base 1 and a fastening system arranged thereon, wherein the fastening system includes end fixing mechanisms relatively arranged at both ends of the base 1, and side fixing mechanisms arranged on both sides of the base 1, and an intermediate fixing mechanism arranged in the middle of the base 1. The bottom plate 101 of the scissors chassis 10 can be fixed to the base 1 through the intermediate fixing mechanism, and the side fixing mechanism and the end fixing mechanism can respectively complete the fixing work of the side plate 102 and the end plate 103, and finally assist in completing the welding work of the entire scissors chassis 10. The structure of the welding fixture device is described in detail below.

[0048] In this embodiment, the intermediate fixing mechanism includes a first pressing unit 6 and a second pressing unit 7 provided in the middle of the base 1 .

[0049] Combine Figure 13 The first pressing unit 6 includes a first pressing frame 61 arranged at a position corresponding to the circular opening 1011 of the bottom plate 101, the first pressing frame 61 includes a first pressing seat 611 and a driving disk 613 driven to rise and fall by a first pressing cylinder 612 on its upper side, and a first pressing rod 614 is further connected to the driving disk 613, one end of the first pressing rod 614 is hingedly connected to the driving disk 613, and the other end points to the outside of the driving disk 613, and the middle part is hingedly connected to the first pressing seat 611 through a hinge rod 615, that is, the two ends of the hinge rod 615 are respectively connected to the first pressing rod 614 and the first pressing seat It is hingedly connected, and a support block is further provided on the base 1. The bottom plate 101 of the scissors chassis 10 can be placed on the base 1 and supported by the support block. On the basis of the structure of the first clamping frame 61, when the driving disk 613 descends, the outer end of the first clamping rod 614 (away from the end of the driving disk 613) can move up and retract inward under the action of the hinge rod 615. In this state, the first clamping rod 614 can pass through the circular opening 1011 on the bottom plate 101 and when the driving disk 613 rises, the bottom plate 101 is clamped by the outer end of the first clamping rod 614, thereby completing the fixing of the bottom plate 101.

[0050] As a preferred embodiment, in order to prevent the base plate 101 from being offset when the first clamping frame 61 of the first clamping unit 6 is working, the first clamping unit 6 also includes a supporting and limiting frame 62 arranged on the outside of the first clamping frame 61, and the supporting and limiting frame 62 includes a positioning seat 621 arranged on the outside of the first clamping seat 611, and a second plug column 622 is provided on the upper side thereof that can be plugged into and cooperated with the base plate 101 of the scissors chassis 10.

[0051] As a further preferred embodiment, in order to ensure the compacting effect of the first compacting rods 614 , there are at least three of them arranged in a circular array around the driving disk 613 .

[0052] Combine Figure 14 and Figure 15 The second clamping unit 7 includes a second clamping frame 71 arranged at a position corresponding to the square opening 1012 of the base plate 101, a second clamping cylinder 72 is vertically provided inside the frame, and second clamping rods 73 are provided on both sides of the upper end, which can be driven to expand outward by the second clamping cylinder 72. The outward expansion of the second clamping rods 73 can press against both sides of the square opening 1012 of the base plate 101, and finally complete the fixing of the base plate 101, so that the fixing work of the base plate 101 can be more convenient and more firm and reliable.

[0053] When the second clamping cylinder 72 is in motion, the two second clamping rods 73 can be elastically pressed against the driving end of the second clamping cylinder 72. When the second clamping cylinder 72 is in motion, the two second clamping rods 73 can be expanded outward under the pushing action of the driving end, and can be retracted when the second clamping cylinder 72 is retracted. This is also a major invention of the present invention. On the basis of the above structure, the second clamping unit 7 is located inside the square opening 1012 and presses the two inner sides of the square opening 1012 toward both sides. Since the second clamping cylinder 72 is in motion, the two second clamping rods 73 have the same pushing distance, so that the bottom plate 101 can not only complete the fixing work, but also have a good centering effect on the bottom plate 101.

[0054] As a preferred embodiment, in order to ensure the fixing effect of the second clamping unit 7 on the base plate 101, two second clamping units 7 are provided corresponding to the two square openings 1012 of the base plate 101, and at least one second clamping unit 7 is further provided with a supporting rod 74 that can support the base plate 101 on the clamping frame.

[0055] In this embodiment, the end fixing mechanism includes a first fixing unit 2 and a second fixing unit 3 which are arranged at two ends of the base 1 opposite to each other.

[0056] Combine Figure 3 and Figure 4 The first fixing unit 2 includes a first guide rail 21 arranged along the length direction of the base 1, and a first fixing frame 22 slidably arranged on the first guide rail 21 and capable of sliding along the length direction of the base 1. The first fixing frame 22 includes a laterally arranged fixed cross plate 221. The first fixing unit 2 also includes a hook 23, and the hook 23 can complete the fixing work of the end plate 103 of the scissors chassis 10 and the fixed cross plate 221 of the first fixing frame 22.

[0057] Furthermore, the hook 23 includes an L-shaped hook body 231 composed of an end rod and a side rod, and a movable rod 232 slidably arranged on the side rod, one end of the movable rod 232 is slidably connected to the side rod, and is parallel to the end rod and located on the same side of the side rod as the end rod. The hook 23 also includes a clamping screw spirally arranged on the end of the movable rod 232 away from the side rod, which is perpendicular to the movable rod 232 and parallel to the side rod. By rotating the clamping screw, it can cooperate with the end rod to complete the clamping and fixing (or tightening and fixing) of the end plate 103 and the fixed cross plate 221.

[0058] Combine Figure 5-Figure 9 The second fixing unit 3 includes a second guide rail 31 arranged along the length direction of the base 1, and a second fixing frame 32 slidably arranged on the second guide rail 31 and capable of sliding along the length direction of the base 1. The second fixing frame 32 includes a first supporting frame 321 slidably connected to the first guide rail 21, and a first plug column is provided on the upper side thereof, and through the first plug column, it can be plugged into and matched with the bottom plate 101 of the scissors chassis 10 to complete the supporting work of the end of the bottom plate 101 away from the end plate 103. On the basis of this structure, through the sliding arrangement of the first fixing frame 22 and the second fixing frame 32, and the fixing work of the bottom plate 101 by the intermediate fixing mechanism, the welding work of the end plates 103 of the scissors chassis 10 of different lengths can be completed more conveniently.

[0059] Furthermore, the second fixing frame 32 also includes a first clamping frame 322 arranged on the upper side of the first supporting bracket 321, and a threaded hole is provided in the middle of the first plug column. After the base plate 101 is placed on the first supporting bracket 321, the base plate 101 can be pressed by the bolt connection between the first clamping frame 322 and the first plug column on the first supporting bracket 321, and the first clamping frame 322 is used to complete the clamping and fixing work of the side plate 102 away from the end plate 103.

[0060] As a preferred embodiment, the second fixing unit 3 also includes a third fixing frame 33 that is slidably arranged on the second guide rail 31 inside the second fixing frame 32 and can slide along the length direction of the base 1. The third fixing frame 33 includes a second supporting bracket 331 slidably connected to the second guide rail 31, and a first clamping cylinder 34 that can drive it to slide is provided between it and the base. The base plate 101 can be placed on the second supporting bracket 331, and one side of the second supporting bracket 331 is also vertically provided with a second clamping frame 332 that passes through the base plate 101 and can be tightly fitted with the reinforcing plate 105 under the action of the first clamping cylinder 34. Finally, through the cooperation of the third fixing frame 33 and the first clamping cylinder 34, the third fixing frame 33 can pass through the base plate 101 from bottom to top, and tighten the side plate 102 and the base plate 101 of the scissors fork chassis 10 through the reinforcing plate 105 to improve the fixing effect of the scissors fork chassis 10.

[0061] In this embodiment, the side fixing mechanism includes clamping units 4 arranged on two sides of the base 1 relative to each other.

[0062] Combine Figure 10-12 The clamping unit 4 includes a third guide rail 41 arranged along the width direction of the base 1, and a mounting plate 42 slidingly arranged thereon, and a fourth fixing frame 43 and a fifth fixing frame 44 are provided on the mounting plate 42, wherein the fifth fixing frame 44 includes a first main frame 441 and a second clamping cylinder 442 arranged laterally at its upper end, and the driving end of the second clamping cylinder 442 faces the clamping unit 4 on the opposite side, and a clamping rod 443 is vertically provided, and the second clamping cylinder 442 is connected to the middle part of the clamping rod 443, and the scissors chassis 10 can be clamped and fixed to the fourth fixing frame 43 on the opposite side through the second clamping cylinder 442. On the basis of this structure, through the sliding setting of the mounting plate 42, combined with the clamping and clamping action of the fourth fixing frame 43 and the fifth fixing frame 44, the welding work of the side plates 102 of the scissors chassis 10 of different width sizes can be completed more conveniently.

[0063] Furthermore, the clamping unit 4 also includes a first auxiliary positioning frame 45 provided on the mounting plate 42 and located on one side of the fourth fixed frame 43. The first auxiliary positioning frame 45 includes a first auxiliary frame 451 and a first positioning rod 452 arranged laterally on one side thereof. The outer end of the first positioning rod 452 is horizontally spirally provided with a first positioning screw that can be tightened against the end of the scissors fork chassis 10. The first positioning screw 453 can complete the tightening and fixing of the scissors fork chassis 10.

[0064] As a preferred embodiment, in order to prevent the setting of the first auxiliary positioning frame 45 from affecting the placement of the scissors chassis 10 , the first positioning rod 452 is hingedly connected to the first auxiliary frame 451 .

[0065] Specifically, one end of the first positioning rod 452 is hingedly connected to the first auxiliary frame 451, and the rotation axis is vertical. The first positioning screw 453 is arranged at the other end of the first positioning rod 452. The first auxiliary frame 451 is also provided with a limit knob 454 corresponding to the middle part of the first positioning rod 452. The limit knob 454 is a columnar structure with a notch on one side, and when the limit knob 454 is turned to the notch and opposite to the first positioning rod 452, the first positioning rod 452 can rotate freely. Otherwise, the first positioning rod 452 can be fixed by the limit knob 454.

[0066] On the basis of the above-mentioned structure of the first fixing unit 2, the second fixing unit 3 and the clamping unit 4, in order to better complete the fixing work of the scissors chassis 10 through the end fixing mechanism and the side fixing mechanism, a limiting column 5 that can press against the outside of the first fixing frame 22, the second fixing frame 32 and the mounting plate 42 is also inserted on the base.

[0067] As a preferred embodiment, in order to make it easier to adjust the positions of the first fixing frame 22 and the second fixing frame 32 along the length direction of the base 1, and the position of the mounting plate 42 along the width direction of the base 1, a plurality of sockets are provided at both ends of the base 1 along its length direction, and at both sides of the base 1 along its width direction, and the limiting column 5 is configured to be able to be plugged into and matched with any socket.

[0068] In summary, the above-mentioned welding fixture device can more stably complete the overall fixing work of the scissors chassis 10 through the end fixing mechanism, the side fixing mechanism and the middle fixing mechanism, so as to ensure that the subsequent welding connection work can be more convenient. At the same time, the first fixing frame 22 and the second fixing frame 32 can slide along the length direction of the base 1, and the mounting plate 42 can drive the fourth fixing frame 43 and the fifth fixing frame 44 to slide along the width direction of the base 1, so that the device can be suitable for the welding work of scissors chassis 10 of different specifications and sizes.

[0069] In this embodiment, in order to further ensure the fixing effect of the scissor lift chassis 10 , fifth fixing brackets 44 are also provided on both sides of the base 1 and located near the first fixing unit 2 and the second fixing unit 3 .

[0070] As a preferred embodiment, a second auxiliary positioning unit 8 is further provided on one side of the two fifth fixing frames 44 close to the first fixing unit 2. The second auxiliary positioning unit 8 includes a second auxiliary frame and a positioning cylinder arranged laterally thereon. The driving end of the positioning cylinder is provided with a positioning column that can be inserted into the side plate 102 of the scissors-type chassis 10 and thus clamp the scissors-type chassis 10. Through the second auxiliary positioning unit 8, while clamping the scissors-type chassis 10, the positioning work of the side plate 102 can also be completed, so that the subsequent welding process can be carried out more smoothly.

[0071] As a further preferred embodiment, a third auxiliary positioning unit 9 is further provided on one side of the two fifth fixing frames 44 close to the second fixing unit 3. The third auxiliary positioning unit 9 includes a third auxiliary frame and a second positioning rod laterally arranged on one side thereof. The outer end spiral of the second positioning rod is provided with a second positioning screw capable of pressing against the end of the scissors-type chassis 10. The second positioning screw can complete the pressing and fixing work of the scissors-type chassis 10.

[0072] More preferably, in order to prevent the setting of the third auxiliary positioning unit 9 from affecting the insertion of the scissors chassis 10, the second positioning rod is hingedly connected to the third auxiliary frame.

[0073] Specifically, one end of the second positioning rod is hingedly connected to the third auxiliary frame, and the rotation axis is vertical. The second positioning screw is arranged at the other end of the second positioning rod. The third auxiliary frame is also provided with a limit knob 454 at a position corresponding to the middle of the first positioning rod 452. The limit knob 454 is a columnar structure with a notch on one side, and when the limit knob 454 is turned to the notch opposite to the second positioning rod, the second positioning rod can rotate freely. Otherwise, the second positioning rod can be fixed by the limit knob 454.

Claims

1. A multifunctional mobile welding fixture device for auxiliary fixing of a scissor chassis (10) to be welded, characterized in that: It comprises a rectangular base (1) and a fastening system arranged thereon, wherein the fastening system comprises end fixing mechanisms arranged at opposite ends of the base (1), side fixing mechanisms arranged on both sides of the base (1), and an intermediate fixing mechanism arranged in the middle of the base (1); The end fixing mechanism comprises a first fixing unit (2) and a second fixing unit (3) which are relatively arranged at two ends of the base (1), the first fixing unit (2) and the second fixing unit (3) respectively comprising a first fixing frame (22) and a second fixing frame (32) which are slidably arranged along the length direction of the base (1), wherein the first fixing unit (2) further comprises a hook (23), and the hook (23) can be used to complete the fixing work of the scissor chassis (10) and the first fixing frame (22), and the second fixing frame (32) comprises a first supporting frame (321), the upper side of which is provided with a first plug column, and the first plug column can be used to plug and cooperate with the scissor chassis (10) and complete the supporting work of the scissor chassis (10); The second fixing unit (3) further comprises a third fixing frame (33) slidably arranged inside the second fixing frame (32) along the length direction of the base (1), and a first abutting cylinder (34) capable of driving the third fixing frame (33) to slide is provided between the third fixing frame (33) and the base (1); The side fixing mechanism comprises clamping units (4) arranged on both sides of the base (1) relative to each other, the clamping unit (4) comprising a mounting plate (42) slidably arranged along the width direction of the base (1), on which a fourth fixing frame (43) and a fifth fixing frame (44) are provided, the fifth fixing frame (44) comprising a second abutting cylinder (442) configured to abut and fix the scissor chassis (10) to the fourth fixing frame (43) on the opposite side; The base (1) is also provided with a limiting column (5) capable of pressing against the outside of the first fixing frame (22), the second fixing frame (32) and the mounting plate (42); The intermediate fixing mechanism comprises a first pressing unit (6) and a second pressing unit (7); The first pressing unit (6) includes a first pressing seat (611) and a driving disk (613) on its upper side driven to rise and fall by a first pressing cylinder (612), and a first pressing rod (614) is further connected to the driving disk (613), one end of the first pressing rod (614) is hingedly connected to the driving disk (613), the other end points to the outside of the driving disk (613), and the middle part is hingedly connected to the first pressing seat (611) by a hinge rod (615); The second pressing unit (7) comprises a second pressing frame (71), and second pressing rods (73) capable of being driven to expand outwards by a second pressing cylinder (72) are provided on both sides of the upper end of the second pressing frame. A fifth fixing frame (44) is also provided on both sides of the base (1) and located near the first fixing unit (2) and the second fixing unit (3); A second auxiliary positioning unit (8) is further provided on one side of the two fifth fixing frames (44) close to the first fixing unit (2); the second auxiliary positioning unit (8) comprises a second auxiliary frame and a positioning cylinder arranged transversely thereon, and a driving end of the positioning cylinder is provided with a positioning column capable of being inserted into the scissor chassis (10) and capable of clamping the scissor chassis (10); A third auxiliary positioning unit (9) is further provided on one side of the two fifth fixing frames (44) close to the second fixing unit (3); the third auxiliary positioning unit (9) comprises a third auxiliary frame and a second positioning rod transversely arranged on one side thereof, and the outer end of the second positioning rod is spirally provided with a second positioning screw capable of pressing against the end of the scissor fork chassis (10).

2. The multifunctional mobile welding tooling device according to claim 1, characterized in that: The second positioning rod is hingedly connected to the third auxiliary frame.

3. The multifunctional mobile welding tooling device according to claim 1, characterized in that: The clamping unit (4) further includes a first auxiliary positioning frame (45) provided on one side of the fourth fixing frame (43); The first auxiliary positioning frame (45) comprises a first auxiliary frame (451) and a first positioning rod (452) arranged transversely on one side thereof, wherein the outer end of the first positioning rod (452) is spirally provided with a first positioning screw (453) capable of pressing against the end of the scissor fork chassis (10).

4. The multifunctional mobile welding tooling device according to claim 3, characterized in that: The first positioning rod (452) is hingedly connected to the first auxiliary frame (451).

5. The multifunctional mobile welding tooling device according to claim 1, characterized in that: A plurality of sockets are provided at both ends of the base (1) along its length direction, and at both sides of the base (1) along its width direction, and the limiting column (5) is configured to be pluggable with any socket.

6. The multifunctional mobile welding tooling device according to claim 1, characterized in that: The first pressing unit (6) further comprises a positioning seat (621) provided outside the first pressing seat (611), the upper side of which is provided with a second plug post (622) capable of plugging and cooperating with the scissor lift chassis (10).

7. The multifunctional mobile welding tooling device according to claim 1, characterized in that: There are at least three first pressing rods (614) arranged in a circular array around the driving disk (613).

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