Tool for welding upper half frame of motorcycle

Abstract

The utility model relates to the technical field of motorcycles, and particularly discloses a motorcycle upper half frame welding tool which comprises a first clamp and a second clamp, the first clamp is used for positioning a main pipe, a supporting pipe, an upper tail pipe and a lower tail pipe of a half frame so as to facilitate welding of metal pipes, and the second clamp is used for clamping the half frame. The fixture II is used for supporting the semi-finished semi-finished frame welded on the fixture I; the first clamp comprises a plurality of supporting blocks, and at least two supporting blocks are arranged below each metal pipe to be welded. The first clamp and the second clamp further comprise end limiting assemblies used for limiting the main pipe ends and the supporting pipe ends of the half frames and bottom fork mounting plate limiting pieces used for limiting bottom fork mounting plates. Each end limiting assembly comprises a supporting frame and a limiting column which is installed on the supporting frame and provided with a circumferential face. The scheme is used for meeting the welding use requirement of the upper half frame of the motorcycle.

Description

Technical Field

[0001] The utility model relates to the technical field of motorcycles, and particularly relates to a welding tool for the upper half frame of a motorcycle. Background Art

[0002] For existing motorcycle frames, such as Figure 1 the frame formed by welding multiple metal pipes as shown, in traditional forming, the frame is mostly divided into a front half and a rear half. For example, the head pipe of the front half is welded to the left and right main pipes and the left and right supporting pipes to form the front half frame, and then the tail light connecting pipe is welded to the left and right upper tail pipes and the left and right lower tail pipes to form the rear half frame. Then, the main pipe of the front half frame is welded to the upper tail pipe of the rear half frame, and the supporting pipe of the front half frame is welded to the lower tail pipe of the rear half frame. For example, a combined fixture of a right front half body tooling for a frame as disclosed in Patent Publication No. CN207656162U. However, due to different stress releases of the front and rear half frames and different deformation amounts after welding, it is very difficult to align the left and right splicing of the front and rear half frames during welding. It is often necessary to correct the dimensions before welding or to splice and shape the front and rear half frames for a long time. After the dimensions can be docked, welding is carried out. Such a method makes the frame welding time-consuming, and it is very difficult to correct the shape after welding of metal steel pipes, which is not conducive to production.

[0003] The inventor attempts to break the assembly method of front-back splicing and change it to a left-right splicing and assembly method, that is, the frame is divided into left and right half frames, a front-end riser assembly, a rear-end tail light assembly, and various connecting cross pipes ( Figure 2 and Figure 3 ) across the left and right half frames in the middle. During production, the half frames, the riser assembly, and the tail light assembly are each first welded into independent wholes, and then the left and right half frames are assembled with the riser assembly, the rear tail light assembly, and the various connecting cross pipes and welded together; each half frame on each side contains multiple main metal pipes (the metal pipes include main pipes, supporting pipes, upper tail pipes, and lower tail pipes), and different parts need to be welded on the main metal pipes, such as flat fork mounting plates, short pipes, seat plate brackets, etc. However, there is currently a lack of a welding tool for the left and right half frames. The traditional method of manually marking the installation positions of each part on the corresponding metal pipes and then aligning the marks for welding has, on the one hand, marking errors and, on the other hand, low production efficiency. Summary of the Utility Model

[0004] The utility model aims to provide a welding tool for the upper half frame of a motorcycle to meet the welding use requirements of the upper half frame of a motorcycle.

[0005] To achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A welding tool for an upper half frame of a motorcycle comprises a first clamp and a second clamp, wherein the first clamp is used to position a main pipe, a tube pipe, an upper tail pipe and a lower tail pipe of the half frame to facilitate welding of the metal pipes, and the second clamp is used to support a semi-finished half frame welded from the first clamp; the first clamp comprises a plurality of support blocks, and at least two support blocks are arranged under each metal pipe to be welded; the first clamp and the second clamp also comprise an end stop assembly for limiting the end of the main pipe and the tube pipe of the half frame, and a fork mounting plate stopper for limiting a fork mounting plate, wherein the end stop assembly comprises a support frame and a stop column with a circumferential surface mounted on the support frame.

[0007] The principle and advantage of this scheme are: when adopting this scheme, by placing the main pipe, the tube pipe, the upper tail pipe and the lower tail pipe on the corresponding support block according to the assembly requirements, the support block limits the position of all the main metal pipes of the half frame to ensure the accuracy of the position of each main metal pipe, after the main metal pipes are limited under the limitation of the clamp one, the main metal pipes are connected together by welding to form a semi-finished product of the half frame, and then the semi-finished product of the half frame is rotated 180° and placed on the clamp two for support and limitation, because the limitation of the half frame of the clamp two and the clamp one both adopts the end limit assembly and the flat fork mounting plate limiter, thereby ensuring the positioning consistency of the clamp one and the clamp two on the half frame, which helps to improve the dimensional consistency and better dimensional accuracy and position accuracy of the half frame after welding and forming; in addition, compared with the traditional manual marking method, this scheme omits the marking step, which helps to improve production efficiency.

[0008] Preferably, as an improvement, the limiting column of the end limiting assembly of the clamp is higher than the main pipe and the tube to be limited, the limiting column can rotate on the support frame, the center of rotation is the center of the circular surface, the limiting column has a chip plane, and the distance between the chip plane and the rotation center is less than the radius of the circular surface.

[0009] Beneficial effect: When this solution is adopted, by designing the chip surface of the upper end limit assembly of the clamp, when it is necessary to limit the main pipe and the tube, the limit column is rotated so that the circumferential surface of the limit column is against the main pipe and the tube to form a limit. When it is necessary to remove the main pipe / tube / semi-frame semi-finished product welded on the clamp from the clamp, it is only necessary to rotate the limit column so that the chip plane is rotated to be opposite to the end of the main pipe / tube. Because the chip plane is close to the rotation center, the chip plane will not block the removal of the metal pipe at this time, thereby facilitating the removal and placement of the metal pipe.

[0010] Preferably, as an improvement, there is a support block in each direction near the joint where the two metal pipes are spliced.

[0011] Preferably, as an improvement, the flat fork mounting plate includes a left mounting plate and a right mounting plate fixedly connected together. The left mounting plate and the right mounting plate clamp the carrier. The flat fork mounting plate limiting member includes a column and a positioning pin fixed on the column. The positioning pin can be inserted into the designed hole of the flat fork mounting plate.

[0012] Beneficial effects: By inserting the positioning pin into the designed hole of the flat fork mounting plate to limit the position of the flat fork mounting plate, and with the left and right mounting plates of the flat fork mounting plate itself, as long as the flat fork mounting plate is limited, the carrier is limited and clamped, improving the position stability of the carrier and helping to reduce or even avoid the probability of displacement during the welding process.

[0013] Preferably, as an improvement, the first fixture further includes a lower presser. The lower presser includes a lifting column, and the lifting column is a stepped column. The stepped column is used to press the short pipe required by the semi-frame against the carrier.

[0014] Beneficial effects: Through the design of the lifting stepped column, on the one hand, it forms a limit to the height space of the carrier, and on the other hand, it also presses the short pipe to be welded to the carrier against the carrier, thus facilitating the welding of the short pipe on the carrier.

[0015] Preferably, as an improvement, a support column is installed at the position of the carrier close to the short pipe.

[0016] Beneficial effects: The support column is used to prevent the lifting column from pressing the carrier excessively, and at the same time, it can avoid the problem of poor heat dissipation during welding caused by the support column facing the short pipe directly.

[0017] Preferably, as an improvement, the first fixture further includes an upper tail pipe limiter. The upper tail pipe limiter includes a moving rod that can move away from or close to the upper tail pipe. The output end of the moving rod is provided with a positioning column. The positioning column on the moving rod can be inserted into the seat plate bracket. The positioning column is used to press the seat plate bracket against the upper tail pipe, and the seat plate bracket is located above the upper tail pipe to form a height limit to the upper tail pipe.

[0018] Preferably, as an improvement, the first fixture further includes a turn signal lamp socket limiter. The turn signal lamp socket limiter includes a fixed lower support plate and a liftable upper pressure rod. The turn signal lamp socket is used to be clamped on the lower tail pipe. The turn signal lamp socket is in contact with both the lower tail pipe and the upper tail pipe. The turn signal lamp socket can be pressed by the upper pressure rod on the lower support plate to form a height limit to the lower tail pipe.

[0019] Preferably, as an improvement, the second fixture further includes a footrest limit post. There are two screw holes on the footrest limit post. The footrest limit post can be used to fixedly install a U-shaped footrest mounting plate through the cooperation of the screw holes and bolts. After the U-shaped footrest mounting plate is fixed on the footrest limit post, the footrest mounting plate is located above the carrier to form a height limit to the semi-frame placed on the second fixture.

[0020] Preferably, as an improvement, tail support blocks are provided below the upper tail pipe for both the first fixture and the second fixture. The tail support blocks are provided with support grooves. The second fixture further includes a plurality of support seats, and support pieces are detachably connected to the support seats. The support pieces are used to support the semi-frame semi-finished product from below. Description of the Drawings

[0021] Figure 1 It is a three-dimensional structural diagram of a motorcycle frame.

[0022] Figure 2 It is Figure 1 a schematic diagram of the motorcycle frame in the exploded view in the left-right direction and the front-back direction in

[0023] Figure 3 It is Figure 2 a top view of

[0024] Figure 4 It is a structural diagram of the motorcycle semi-frame targeted by the embodiment of the present invention.

[0025] Figure 5 It is a three-dimensional structural diagram (without placing the semi-frame) of the welding tooling for the upper half-frame of the motorcycle in the embodiment of the present invention.

[0026] Figure 6 It is Figure 5 a structural diagram of the fixture in

[0027] Figure 7 It is Figure 5 a three-dimensional structural diagram after rotating 90° in

[0028] Figure 8 It is Figure 7 a structural diagram of the fixture in

[0029] Figure 9 It is Figure 7 a structural diagram of the first fixture in

[0030] Figure 10 It is Figure 8 a structural diagram of the second fixture in Detailed Description of the Invention

[0031] The following is a further detailed description through specific embodiments:

[0032] The reference numerals in the drawings of the specification include: Fixture One 100, Fixture Two 200, semi-frame 300, main pipe 31, support pipe 32, upper tail pipe 33, lower tail pipe 34, short pipe 35, seat plate bracket 36, flat fork mounting plate 37, turn signal lamp socket 38, footrest mounting plate 39, workbench surface 1, support block 2, tail support block 21, end limit assembly 3, support frame 301, limit post 302, flat fork mounting plate limiter 4, upright post 41, auxiliary support limit plate 42, lower presser 5, lifting column 51, upper tail pipe limiter 6, moving rod 61, turn signal lamp socket limiter 7, lower support plate 71, upper pressing rod 72, footrest limit post 8, support seat 9, support piece 91.

[0033] The embodiment is basically as shown in the attached Figures 5 to 10 drawing.

[0034] A welding tooling for the upper semi-frame of a motorcycle, comprising Fixture One 100 and Fixture Two 200. Fixture One 100 is used to position the main pipe 31, support pipe 32, upper tail pipe 33 and lower tail pipe 34 of the semi-frame 300 to facilitate the welding of each metal pipe. Fixture Two 200 is used to support the semi-finished product of the semi-frame 300 welded from Fixture One 100. Fixture Two 200 is used to fix the semi-finished product of the semi-frame 300 after flipping to facilitate the welding of the joints of each metal pipe of the flipped semi-frame 300. That is to say, Fixture One 100 mainly facilitates the welding of one side of the semi-frame 300, and Fixture Two 200 mainly facilitates the welding of the other side of the semi-frame 300.

[0035] Specifically, Fixture One 100 includes a workbench surface 1, a plurality of support blocks 2, an end limit assembly 3 for limiting the ends of the main pipe 31 and support pipe 32 of the semi-frame 300, a flat fork mounting plate limiter 4 for limiting the flat fork mounting plate 37, a lower presser 5 for pressing the short pipe 35 against the support pipe 32, an upper tail pipe limiter 6 for limiting the height position of the upper tail pipe 33, and a turn signal lamp socket limiter 7 for limiting the position of the turn signal lamp socket 38. The support blocks 2 are detachably connected to the workbench surface 1. A support groove is opened at the top of each support block 2. At least two support blocks 2 are arranged below each metal pipe to be welded, and there is a support block 2 in each direction near the joint where two metal pipes are spliced.

[0036] The end limit assembly 3 includes a support frame 301 and a limit post 302 with a circumferential surface mounted on the support frame 301. The support frame 301 is fixedly mounted on the workbench surface 1. The limit post 302 of the end limit assembly 3 in Fixture One 100 is higher than the main pipe 31 and support pipe 32 to be limited. The limit post 302 can rotate on the support frame 301, and the rotation center is the center of the circumferential surface. The limit post 302 has a chip plane, and the distance between the chip plane and the rotation center is less than the radius of the circumferential surface.

[0037] The lower presser 5 includes a lifting column 51, and the lifting column 51 is connected with a lifting drive for driving the lifting column 51 to lift. The lifting drive is not shown in the attached drawings of this embodiment. The lifting column 51 is a stepped column, and the stepped column is used to press the short pipe 35 required by the semi-frame 300 against the support 32, so as to limit the height space of the support 32, and facilitate the welding of the short pipe 35 and the support 32 after the short pipe 35 is pressed against the support 32 by the stepped column. A support column is installed at a position of the support 32 close to the short pipe 35 to avoid excessive pressing of the support 32 by the lifting column 51, and at the same time, it can avoid the problem of poor heat dissipation during welding caused by the support column facing the short pipe 35 directly.

[0038] The upper tail pipe limiter 6 includes a moving rod 61 that can move away from or close to the upper tail pipe 33. The movement of the moving rod 61 is driven by a driver fixed on the workbench surface 1 (the driver is not shown in the figure). The output end of the moving rod 61 is provided with a positioning column, and the positioning column on the moving rod 61 can be inserted into the seat plate bracket 36 (the seat plate bracket 36 is a part on the semi-frame 300 that needs to be fixed on the upper tail pipe 33). The positioning column is used to press the seat plate bracket 36 against the upper tail pipe 33, and the seat plate bracket 36 is located above the upper tail pipe 33 to form a height limit for the upper tail pipe 33.

[0039] The turn signal lamp seat limiter 7 includes a fixed lower support plate 71 and a liftable upper pressing rod 72. The turn signal lamp seat 38 is used to be clamped on the lower tail pipe 34. The turn signal lamp seat 38 is in contact with both the lower tail pipe 34 and the upper tail pipe 33. The turn signal lamp seat 38 can be pressed by the upper pressing rod 72 against the lower support plate 71 to form a height limit for the lower tail pipe 34.

[0040] The fixture two 200 also includes a workbench surface 1, an end limit assembly 3 for limiting the ends of the main pipe 31 and the support 32 of the semi-frame 300, and a flat fork mounting plate limiter 4 for limiting the flat fork mounting plate 37; compared with the fixture one 100, the fixture two 200 does not have the lower presser 5, the upper tail pipe limiter 6 and the turn signal lamp seat limiter 7, but the fixture two 200 also includes a footrest limit post 8 for fixedly supporting the footrest mounting plate 39 to be welded. The end limit assembly 3 also includes a support frame 301 and a limit post 302 with a circumferential surface fixedly installed on the support frame 301. Different from the limit post 302 of the fixture one 100, the limit post 302 of the fixture two 200 is in the shape of a cylindrical tube.

[0041] Two screw holes are provided on the footrest limit post 8. The footrest limit post 8 can be used to fixedly install the U-shaped footrest mounting plate 39 through the screw holes in cooperation with bolts. After the U-shaped footrest mounting plate 39 is fixed on the footrest limit post 8, the footrest mounting plate 39 is located above the support 32 to form a height limit for the semi-frame 300 placed on the fixture two 200.

[0042] The flat fork mounting plate 37 required on the semi-frame 300 includes a left mounting plate and a right mounting plate welded together. The left mounting plate and the right mounting plate clamp the carrier 32. In the drawings, the left mounting plate and the right mounting plate can clamp the carrier 32 from above and below.

[0043] The flat fork mounting plate limiting member 4 includes a column 41 and a positioning pin fixed on the column 41. The column 41 is fixed on the working platform, and the positioning pin can be inserted into the designed hole of the flat fork mounting plate 37. In the fixture one 100, there is also an auxiliary support and limit plate 42 for supporting and limiting the flat fork mounting plate 37. The auxiliary support and limit plate 42 can lift the flat fork mounting plate 37, and there is a mating hole on the auxiliary support and limit plate 42. The mating hole is directly opposite to another designed hole on the flat fork mounting plate 37. By inserting a pin into the mating hole, the limitation of the flat fork mounting plate 37 on the fixture one 100 can be improved. The positioning pin of the fixture one 100 penetrates through the auxiliary support and limit plate 42.

[0044] In addition, both the fixture one 100 and the fixture two 200 are provided with a tail support block 21 below the upper tail pipe 33. The tail support block 21 also has a support groove. The fixture two 200 further includes a plurality of support seats 9. A support piece 91 is detachably connected to the support seat 9. The support piece 91 is used to support the semi-finished product of the semi-frame 300 from below, and the support piece 91 itself is a part that needs to be welded to the corresponding metal pipe of the semi-frame 300.

[0045] When adopting this embodiment, for the metal pipes required for each semi-frame 300, mainly including the main pipe 31, the carrier 32, the upper tail pipe 33 and the lower tail pipe 34, first, according to the design requirements, place them on the fixture one 100, and support each metal pipe by the support grooves of each support block 2. Then clamp the flat fork mounting plate 37 on the carrier 32, and the flat fork mounting plate 37 is limited by the flat fork mounting plate limiting member 4 and the auxiliary support and limit plate 42. Then make the circumferential surfaces of the ends of the carrier 32 and the main pipe 31 stick to the circumferential surface of the limiting column 302 that has been rotated into place. Finally, let the lower press 5 press the short pipe 35 against the carrier 32, let the upper tail pipe limiter 6 press the seat plate bracket 36 against the upper tail pipe 33, and let the turn signal lamp seat limiter 7 press the turn signal lamp seat 38 against the lower tail pipe 34 to complete the height limitation of the carrier 32, the upper tail pipe 33 and the lower tail pipe 34. And the main pipe 31 has its head end tilted upward and sticking below the limiting column 302, and the tail end of the main pipe 31 abuts against the lower-positioned carrier 32, so as to realize the height limitation of the main pipe 31 by relying on the position design and the end limiting assembly 3.

[0046] After all the metal pipes, the flat fork mounting plate 37, the short pipe 35, the seat plate bracket 36, and the turn signal lamp seat 38 that need to be welded are all installed on the fixture one 100, weld the joints of the metal pipes to each other, and weld the parts on the semi-frame 300 to the corresponding metal pipes. After welding, the semi-frame 300 forms an integral semi-finished product.

[0047] After the semi-finished product is cooled to a suitable temperature, the whole semi-finished product is then flipped and placed into the second fixture 200. In the second fixture 200, the semi-finished product is supported and limited by the support piece 91 on the support seat 9, the tail support block 21, and the flat fork mounting plate limiting member 4, and the height of the semi-frame 300 is limited by the end limiting assembly 3 and the foot pedal mounting plate 39 mounted on the foot pedal limiting post 8. After the assembly of the semi-finished product on the second fixture 200 is completed, the connecting seams between the flipped metal pipes are welded by welding, as well as the welding of the parts on each semi-frame 300 and the corresponding metal pipes.

[0048] In the whole embodiment, since the second fixture 200 and the first fixture 100 use the end limiting assembly 3 and the flat fork mounting plate limiting member 4 to limit the semi-frame 300, the positioning consistency of the first fixture 100 and the second fixture 200 for the semi-frame 300 is ensured, which helps to improve the dimensional consistency and better dimensional accuracy and position accuracy after the welding of the semi-frame 300.

[0049] The above are only the embodiments of the present invention, and the well-known specific technical solutions and / or common knowledge such as characteristics are not described in detail here. It should be noted that for those skilled in the art, without departing from the technical solution of the present invention, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present invention, and these will not affect the implementation effect of the present invention and the practicality of the patent. The protection scope required by this application shall be subject to the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.

Claims

1. A welding tool for the upper half frame of a motorcycle, comprising a clamp 1 and a clamp 2, wherein the clamp 1 is used to position the main pipe, the main pipe, the upper tail pipe and the lower tail pipe of the half frame to facilitate the welding of each metal pipe, and the clamp 2 is used to support the semi-finished half frame welded from the clamp 1; the clamp 1 comprises a plurality of support blocks, and at least two support blocks are arranged under each metal pipe to be welded; the characteristics are: Both clamp one and clamp two also include an end limit assembly for limiting the main pipe end and the tube end of the half frame, and a flat fork mounting plate limiter for limiting the flat fork mounting plate. The end limit assembly includes a support frame and a limit column with a circumferential surface installed on the support frame.

2. The welding tool for the upper frame of a motorcycle according to claim 1, characterized in that: The limiting column of the end limiting assembly of the clamp is higher than the main pipe and the tube to be limited. The limiting column can rotate on the support frame, and the center of rotation is the center of the circular surface. The limiting column has a chip plane, and the distance between the chip plane and the rotation center is less than the radius of the circular surface.

3. The welding tool for the upper frame of a motorcycle according to claim 1, characterized in that: There is a support block in each direction near the joint where two metal pipes are spliced.

4. The welding tool for the upper frame of a motorcycle according to claim 3, characterized in that: The flat fork mounting plate includes a left mounting plate and a right mounting plate fixedly connected together, the left mounting plate and the right mounting plate clamp the tube, and the flat fork mounting plate limiting component includes a column and a positioning pin fixed on the column, and the positioning pin can be inserted into the designed hole of the flat fork mounting plate.

5. The welding tool for the upper frame of a motorcycle according to claim 4, characterized in that: The clamp 1 also includes a presser, which includes a lifting column. The lifting column is a step column, and the step column is used to press the short tube required by the half frame against the tube.

6. The welding tool for the upper frame of a motorcycle according to claim 5, characterized in that: A support column is installed at a position of the hosting tube close to the short tube.

7. The welding tool for the upper frame of a motorcycle according to claim 6, characterized in that: The clamp 1 also includes an upper tail pipe limiter, which includes a movable rod that can move away from or close to the upper tail pipe, and the output end of the movable rod is provided with a positioning column, and the positioning column on the movable rod can be inserted into the seat plate bracket, and the positioning column is used to press the seat plate bracket against the upper tail pipe, and the seat plate bracket is located above the upper tail pipe.

8. The welding tool for the upper frame of a motorcycle according to claim 7, characterized in that: The fixture also includes a turn signal lamp holder limiter, which includes a fixed lower support plate and an upper pressure rod that can be raised and lowered. The turn signal lamp holder is used to be clamped on the lower tail pipe. The turn signal lamp holder is in contact with both the lower tail pipe and the upper tail pipe, and the turn signal lamp holder can be pressed on the lower support plate by the upper pressure rod.

9. A welding tool for a motorcycle upper frame according to any one of claims 2 to 8, characterized in that: The second clamp also includes a pedal limit column, which is provided with two screw holes. The pedal limit column can be used to fix the U-shaped pedal mounting plate through the screw holes and the bolts. After the U-shaped pedal mounting plate is fixed on the pedal limit column, the pedal mounting plate is located above the hosting.

10. A welding tool for a motorcycle upper frame according to any one of claims 2 to 8, characterized in that: The clamp 1 and the clamp 2 are both provided with a tail support block below the upper tail pipe, and the tail support block has a support groove. The clamp 2 also includes a plurality of support seats, and the support seats are detachably connected with support plates, and the support plates are used to support the semi-finished product of the half frame from below.

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