An automatic alignment bicycle frame welding positioning fixture

Abstract

The utility model discloses a kind of automatic centering bicycle frame welding positioning clamps, belong to bicycle frame processing technical field, its technical scheme main points include base, the top of the base movably connected with several adjusting components, and the top of adjusting component is fixedly connected with clamping component, the adjusting component includes moving block, the top of the moving block is fixedly connected with T-shaped block, and the surface of T-shaped block movably connected with U-shaped clamping block, the top of the U-shaped clamping block is fixedly connected fixed cylinder, and the inside rotation of fixed cylinder is connected with rotating round block, solve the positioning clamp welding efficiency of existing and not good, in actual use process, due to lack of adjusting structure, it is difficult to adjust steel pipe, the center alignment of steel pipe, angle calibration needs manual operation, not only time-consuming and laborious, and positioning accuracy relies on worker experience, lead to welding efficiency is low, difficult to meet the batch production demand, reduce the practicability of the device.

Description

Technical Field

[0001] This utility model relates to the field of bicycle frame processing technology, and in particular to an automatic centering bicycle frame welding positioning fixture. Background Technology

[0002] Bicycle frames are made of multiple welded tubing. During welding, the relative positional accuracy of each tubing must be ensured, which directly affects the bicycle's riding stability and safety.

[0003] Most existing positioning fixtures fix the bicycle frame on a flat surface by clamping it. During welding, the frame needs to be taken out and flipped over to weld the other side, which is a rather cumbersome process.

[0004] An existing patent (publication number: CN221809062U) discloses a bicycle frame welding fixture. By setting a first motor, the power output of the first motor drives a second threaded rod and a first threaded rod to rotate. When the second and first threaded rods rotate, they drive two displacement blocks to move in opposite directions. These two displacement blocks drive a first clamping block and a second clamping block on the adjacent sides of two connecting frames to clamp and displace. Simultaneously, the connecting frames drive a first cylinder to move, the first cylinder drives a connecting block to move, the connecting block drives a connecting plate to move, and the connecting plate drives a third clamping block to clamp and displace. This allows the steel tubes on the frame to be placed at the clamping blocks in three directions and finally clamped and fixed synchronously. During this process, the frame steel tubes are clamped vertically, exposing both the front and rear welding surfaces of the frame steel tubes. Therefore, welding does not require changing sides, saving manpower and making the process more convenient.

[0005] Existing patents offer solutions to the aforementioned problems, but their welding efficiency is poor. In actual use, due to the lack of an adjustment structure, it is difficult to adjust the steel pipe. The center alignment and angle calibration of the steel pipe require manual operation, which is not only time-consuming and labor-intensive, but also relies on the worker's experience for positioning accuracy, resulting in low welding efficiency and difficulty in meeting the needs of mass production, thus reducing the practicality of the device.

[0006] To address this, an automatic centering bicycle frame welding positioning fixture is proposed. Utility Model Content

[0007] The purpose of this utility model is to provide an automatic centering bicycle frame welding positioning fixture, which can solve the problems of poor welding efficiency of existing positioning fixtures. In actual use, due to the lack of adjustment structure, it is difficult to adjust the steel pipe. The center alignment and angle calibration of the steel pipe need to be manually operated, which is not only time-consuming and labor-intensive, but also the positioning accuracy depends on the worker's experience, resulting in low welding efficiency and difficulty in meeting the needs of mass production, thus reducing the practicality of the device.

[0008] To achieve the above objectives, this utility model provides the following technical solution: an automatic centering bicycle frame welding positioning fixture, comprising a base, a plurality of adjusting components movably connected to the top of the base, and a clamping component fixedly connected to the top of the adjusting components. The adjusting components include a moving block, a T-shaped block fixedly connected to the top of the moving block, and a U-shaped locking block movably connected to the surface of the T-shaped block. A fixed cylinder is fixedly connected to the top of the U-shaped locking block, and a rotating circular block is rotatably connected inside the fixed cylinder. Moving plates are movably connected to both sides of the top of the rotating circular block, and a return spring is fixedly connected to one side of each of the two moving plates opposite to each other. A pressing block is fixedly connected to the side of the moving plate away from the return spring, and the other end of the pressing block extends to the outside of the fixed cylinder.

[0009] Preferably, the clamping assembly includes a connecting bracket, a rotating block is rotatably connected inside the connecting bracket, and a U-shaped air storage block is fixedly connected to the other end of the rotating block. A U-shaped air bladder is fixedly connected inside the U-shaped air storage block, and a connecting air valve is fixedly connected to the bottom left side of the U-shaped air storage block. A telescopic rod is fixedly connected to the bottom of the connecting bracket, and the other end of the telescopic rod is fixedly connected to the rotating block.

[0010] Preferably, the U-shaped airbag is made of wear-resistant rubber.

[0011] Preferably, an air pump is fixedly connected to the right side of the base, and a flow divider is fixedly connected to the right side of the air pump. Two connecting hoses are fixedly connected to the top of the flow divider, and the other end of the connecting hoses is fixedly connected to a connecting air valve.

[0012] Preferably, both sides of the U-shaped block are threaded with bolts, and both sides of the bottom of the U-shaped block are rotatably connected with several ball bearings.

[0013] Preferably, the top of the fixed cylindrical surface is provided with a positioning hole for use with the pressing block, and the surface of the pressing block is in contact with the inner wall of the positioning hole.

[0014] Preferably, the top of the base surface has several fixing grooves for use with the movable block, and a positioning plate is fixedly connected inside the fixing groove. The movable block is slidably connected to the surface of the positioning plate, and a buckle block is rotatably connected to one end of the positioning plate near the outer side of the base.

[0015] Preferably, a circular fixed bracket is fixedly connected to the bottom of the base, and an annular rotating groove is provided on the top of the surface of the circular fixed bracket. A T-shaped slider is slidably connected inside the annular rotating groove, and a spotlight is fixedly connected to the side of the T-shaped slider away from the circular fixed bracket.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This application, by setting up a clamping component, can supply air through an air pump to inflate the U-shaped airbag and evenly wrap the part of the frame to be welded, automatically fill the gaps on the surface of the frame and push it to the center of the airbag to achieve automatic centering and achieve stable fixation of the frame. At the same time, with the help of the rotating structure composed of the telescopic rod, connecting bracket and rotating block, the height and elevation angle can be adjusted, which facilitates subsequent welding and improves the ease of use of the device.

[0018] 2. This application, by setting up an adjustment component, can complete the adjustment of the horizontal or vertical position of the adjustment component through the buckling structure formed by the positioning plate and the buckle block. The U-shaped buckle block can be manually pushed to move along the T-shaped block and locked by bolts to complete the horizontal position adjustment. At the same time, the rotation angle of the rotating block can be adjusted by the elastic buckling structure formed by the pressing block and the return spring. The three work together to achieve multi-dimensional adjustment, adapting to frames of different sizes and welding angles, providing basic positioning guarantee for subsequent precise clamping and welding, and improving the practicality of the device. Attached Figure Description

[0019] Figure 1 This is an overall structural diagram of the automatic alignment bicycle frame welding positioning fixture of this utility model;

[0020] Figure 2 This is a schematic diagram showing the connection of the base, adjustment component, clamping component, and circular fixing bracket of this utility model;

[0021] Figure 3 This is a schematic diagram showing the connection between the base, circular fixed bracket, and spotlight of this utility model;

[0022] Figure 4 This is a schematic diagram of the clamping assembly of this utility model;

[0023] Figure 5 This is a schematic diagram of the clamping assembly of this utility model.

[0024] In the diagram: 1. Base; 2. Adjustment assembly; 201. Moving block; 202. T-shaped block; 203. U-shaped locking block; 204. Fixed cylinder; 205. Rotating block; 206. Moving plate; 207. Return spring; 208. Pressing block; 3. Clamping assembly; 301. Connecting bracket; 302. Rotating block; 303. U-shaped air storage block; 304. U-shaped airbag; 305. Connecting air valve; 306. Telescopic rod; 4. Air pump; 5. Diverter block; 6. Connecting hose; 7. Bolt; 8. Ball bearing; 9. Positioning hole; 10. Fixing groove; 11. Positioning plate; 12. Buckle block; 13. Circular fixed bracket; 14. Annular rotating groove; 15. T-shaped slider; 16. Spotlight. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-5 The present invention provides the following technical solution:

[0027] An automatic alignment bicycle frame welding positioning fixture includes a base 1. Several adjustment components 2 are movably connected to the top of the base 1, and a clamping component 3 is fixedly connected to the top of the adjustment components 2. The adjustment components 2 include a moving block 201. A T-shaped block 202 is fixedly connected to the top of the moving block 201, and a U-shaped locking block 203 is movably connected to the surface of the T-shaped block 202. A fixed cylinder 204 is fixedly connected to the top of the U-shaped locking block 203, and a rotating circular block 205 is rotatably connected inside the fixed cylinder 204. Moving plates 206 are movably connected to both sides of the top of the rotating circular block 205, and a return spring 207 is fixedly connected to the opposite side of the two moving plates 206. A pressing block 208 is fixedly connected to the side of the moving plate 206 away from the return spring 207, and the other end of the pressing block 208 extends to the outside of the fixed cylinder 204.

[0028] In this embodiment: the U-shaped locking block 203 and the T-shaped block 202 work together to allow the U-shaped locking block 203 to move smoothly along the T-shaped block 202. Once in position, the bolt 7 is tightened to fix the T-shaped block 202, thus adjusting the horizontal position. Simultaneously, pressing the pressing block 208 moves the moving plate 206 smoothly and compresses the return spring 207, releasing the lock on the rotating block 205. This allows the rotating block 205 to rotate around the fixed cylinder 204. After adjustment, the return spring 207 rebounds, causing the pressing block 208 to reset and embed into the positioning hole 9 on the surface of the fixed cylinder 204, thus fixing the angle. The two work together to adjust the horizontal position and angle, adapting to different pipe fittings. The welding angle requirements are improved, enhancing the ease of use of the device. Then, under the action of the telescopic rod 306, its height can be adjusted according to the actual processing situation. In conjunction with the rotating structure formed by the rotating block 302 and the connecting bracket 301, the U-shaped air storage block 303 rotates around the connecting bracket 301 to complete the angle adjustment. The two work together to complete the height and elevation angle adjustment. At the same time, the connecting hose 6 is connected to the connecting air valve 305 to form an air supply channel between the air pump 4 and the U-shaped air storage block 303. This allows the gas to be smoothly delivered to the U-shaped airbag 304 to inflate. The inflated U-shaped airbag 304 can fill the gaps on the surface of the frame and push it to the center of the airbag, achieving precise centering and stable fixation, thus improving the ease of use of the clamping component 3.

[0029] Specifically, such as Figure 4 As shown, the clamping assembly 3 includes a connecting bracket 301, a rotating block 302 is rotatably connected inside the connecting bracket 301, and a U-shaped air storage block 303 is fixedly connected to the other end of the rotating block 302. A U-shaped air bladder 304 is fixedly connected inside the U-shaped air storage block 303, and a connecting air valve 305 is fixedly connected to the bottom left side of the U-shaped air storage block 303. A telescopic rod 306 is fixedly connected to the bottom of the connecting bracket 301, and the other end of the telescopic rod 306 is fixedly connected to the rotating circular block 205.

[0030] Specifically, such as Figure 4 As shown, the material of the U-shaped airbag 304 is wear-resistant rubber.

[0031] Specifically, such as Figure 2 , Figure 3 As shown, an air pump 4 is fixedly connected to the right side of the base 1, and a diverter block 5 is fixedly connected to the right side of the air pump 4. Two connecting hoses 6 are fixedly connected to the top of the diverter block 5, and the other end of the connecting hoses 6 is fixedly connected to the connecting air valve 305.

[0032] In this embodiment: By using the diverter block 5 in conjunction with the connecting hose 6, the connecting hose 6 is connected to the connecting air valve 305 to form an air supply channel. The gas generated by the air pump 4 can be diverted through the diverter block 5, and then through the connecting hose 6, the connecting air valve 305, and the U-shaped air storage block 303 to finally drive the U-shaped airbag 304 to inflate. The inflated U-shaped airbag 304 can fill the gaps on the surface of the frame and push it to the center of the airbag, achieving precise centering and stable fixation. At the same time, the U-shaped airbag 304 is made of wear-resistant rubber material, which can effectively resist the friction wear caused by long-term clamping, reduce the risk of breakage, ensure the stable operation of the clamping component 3, and improve the service life of the device.

[0033] Specifically, such as Figure 5 As shown, bolts 7 are threadedly connected to both sides of the U-shaped block 203, and several ball bearings 8 are rotatably connected to both sides of the bottom of the U-shaped block 203.

[0034] Specifically, such as Figure 5 As shown, a positioning hole 9 is provided on the top of the surface of the fixed cylinder 204 to cooperate with the pressing block 208, and the surface of the pressing block 208 is in contact with the inner wall of the positioning hole 9.

[0035] In this embodiment: By using the bolt 7 and the ball bearing 8 together, when the horizontal position needs to be adjusted, loosening the bolt 7 releases the lock on the U-shaped block 203. When the U-shaped block 203 moves along the T-shaped block 202, it drives the ball bearing 8 to rotate synchronously, which greatly reduces friction and ensures that the position adjustment is smooth. At the same time, by using the multi-angle positioning structure formed by multiple positioning holes 9 on the surface of the fixed cylinder 204, pressing the pressing block 208 drives the moving plate 206 to move and compresses the return spring 207, which can release the lock on the rotating block 205. After the angle is adjusted to the position, the return spring 207 rebounds and drives the pressing block 208 to embed into the positioning hole 9, thus completing the angle fixation. This adapts to the welding angle requirements of pipe fittings and improves the ease of use of the adjustment component 2.

[0036] Specifically, such as Figure 3 As shown, the top of the surface of the base 1 has several fixing grooves 10 for use with the moving block 201, and the fixing groove 10 is fixedly connected to the inside of the fixing plate 11. The moving block 201 is slidably connected to the surface of the positioning plate 11, and the end of the positioning plate 11 near the outside of the base 1 is rotatably connected to the buckle block 12.

[0037] Specifically, such as Figure 2 , Figure 3 As shown, a circular fixed bracket 13 is fixedly connected to the bottom of the base 1, and an annular rotating groove 14 is provided on the top of the surface of the circular fixed bracket 13. A T-shaped slider 15 is slidably connected inside the annular rotating groove 14, and a spotlight 16 is fixedly connected to the side of the T-shaped slider 15 away from the circular fixed bracket 13.

[0038] In this embodiment: the positioning plate 11 and the latching block 12 work together to allow the moving block 201 to move smoothly along the fixing groove 10 under the constraint of the positioning plate 11. After moving into position, the latching block 12 is rotated to lock it. With the help of the two types of fixing grooves 10, the horizontal or vertical position of the adjusting component 2 can be adjusted to adapt to different frame specifications. At the same time, the annular rotating groove 14 and the T-shaped slider 15 work together to form a guide structure, which allows the spotlight 16 to rotate smoothly along the annular rotating groove 14 under the constraint of the T-shaped slider 15. The illumination angle can be adjusted according to the welding situation to ensure that the welding point is always within the sufficient illumination range, avoiding welding defects and incomplete welding caused by insufficient light, thus improving the ease of use of the device.

[0039] Working principle: When welding the bicycle frame, first, manually push the spotlight 16 so that it rotates along the annular rotating groove 14 under the constraint of the T-shaped slider 15 to adjust the illumination angle and ensure sufficient illumination at the welding point. Then, according to the layout of the frame tubes, take out the corresponding adjustment component 2 and rotate the buckle block 12 to release the lock on the moving block 201. Align the moving block 201 with the positioning plate 11 and push it so that the adjustment component 2 moves smoothly along the fixed groove 10. After it moves into place, rotate the buckle block 12 to lock it. With the help of the two types of fixed grooves 10, the horizontal or vertical position of the adjustment component 2 can be adjusted. Then, push the U-shaped buckle block 203 to move along the T-shaped block 202. After it is in place, tighten the bolt 7 to lock it and realize the adjustment of the horizontal position. When the angle needs to be adjusted, drive the moving plate 206 to move smoothly and compress the return spring 207 to release the lock on the rotating block 205, so that it rotates around The fixed cylinder 204 is rotated to the appropriate angle, and the return spring 207 rebounds, causing the pressing block 208 to be inserted into the positioning hole 9, thus fixing the angle. The two work together to adapt to the welding requirements of different pipe fittings, eliminating the need for frequent tooling changes. After adjusting the adjustment component 2, the connecting hose 6 is connected to the connecting air valve 305 to form the air supply channel between the air pump 4 and the U-shaped air storage block 303. Then, the height of the telescopic rod 306 is manually adjusted, and the U-shaped air storage block 303 is rotated to adjust the elevation angle so that it is aligned with the position to be clamped on the pipe fitting. Finally, the pipe fitting is placed into the U-shaped air bag 304, and the air pump 4 is started to generate airflow. The gas is delivered to the U-shaped air storage block 303 through the diverter block 5, the connecting hose 6, and the connecting air valve 305, driving the U-shaped air bag 304 to expand, adhering to the surface of the pipe fitting and automatically pushing it to the center for centering and fixing. This facilitates subsequent disassembly and buffers the clamping impact to avoid damage to the pipe fitting, adapting to the welding requirements of different specifications of bicycle frames.

[0040] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic alignment bicycle frame welding positioning fixture, comprising a base (1), characterized in that: The top of the base (1) is movably connected to several adjustment components (2), and the top of the adjustment components (2) is fixedly connected to a clamping component (3). The adjustment component (2) includes a moving block (201), the top of the moving block (201) is fixedly connected to a T-shaped block (202), and the surface of the T-shaped block (202) is movably connected to a U-shaped locking block (203). The top of the U-shaped locking block (203) is fixedly connected to a fixed cylinder (204), and the inside of the fixed cylinder (204) is rotatably connected to a rotating block (205). The two sides of the top of the rotating block (205) are movably connected to moving plates (206), and the opposite sides of the two moving plates (206) are fixedly connected to a return spring (207). The side of the moving plate (206) away from the return spring (207) is fixedly connected to a pressing block (208), and the other end of the pressing block (208) extends to the outside of the fixed cylinder (204).

2. The automatic alignment bicycle frame welding positioning fixture according to claim 1, characterized in that: The clamping assembly (3) includes a connecting bracket (301), a rotating block (302) is rotatably connected inside the connecting bracket (301), and a U-shaped air storage block (303) is fixedly connected to the other end of the rotating block (302). A U-shaped air bladder (304) is fixedly connected inside the U-shaped air storage block (303), and a connecting air valve (305) is fixedly connected to the bottom left side of the U-shaped air storage block (303). A telescopic rod (306) is fixedly connected to the bottom of the connecting bracket (301), and the other end of the telescopic rod (306) is fixedly connected to the rotating circular block (205).

3. The automatic alignment bicycle frame welding positioning fixture according to claim 2, characterized in that: The U-shaped airbag (304) is made of wear-resistant rubber.

4. The automatic alignment bicycle frame welding positioning fixture according to claim 2, characterized in that: An air pump (4) is fixedly connected to the right side of the base (1), and a diverter block (5) is fixedly connected to the right side of the air pump (4). Two connecting hoses (6) are fixedly connected to the top of the diverter block (5), and the other end of the connecting hoses (6) is fixedly connected to the connecting air valve (305).

5. The automatic alignment bicycle frame welding positioning fixture according to claim 1, characterized in that: Both sides of the U-shaped block (203) are threaded with bolts (7), and both sides of the bottom of the U-shaped block (203) are rotatably connected with several balls (8).

6. The automatic alignment bicycle frame welding positioning fixture according to claim 1, characterized in that: The top of the surface of the fixed cylinder (204) is provided with a positioning hole (9) for use with the pressing block (208), and the surface of the pressing block (208) is in contact with the inner wall of the positioning hole (9).

7. The automatic alignment bicycle frame welding positioning fixture according to claim 1, characterized in that: The top of the base (1) has several fixing slots (10) for use with the moving block (201), and a positioning plate (11) is fixedly connected inside the fixing slot (10). The moving block (201) is slidably connected to the surface of the positioning plate (11), and a buckle block (12) is rotatably connected to one end of the positioning plate (11) near the outside of the base (1).

8. The automatic alignment bicycle frame welding positioning fixture according to claim 1, characterized in that: The bottom of the base (1) is fixedly connected to a circular fixed bracket (13), and the top of the surface of the circular fixed bracket (13) is provided with an annular rotating groove (14). A T-shaped slider (15) is slidably connected inside the annular rotating groove (14), and a spotlight (16) is fixedly connected to the side of the T-shaped slider (15) away from the circular fixed bracket (13).

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