Efficient correction device for a bicycle fork

Abstract

The present application relates to the technical field of bicycle manufacturing, and discloses an efficient correction device for a bicycle tripod, which comprises a bottom box and a control box, the upper end of the bottom box is fixed with a disc seat, a rotating disc for rotating and conveying the tripod is rotatably arranged in the disc seat, the rotating disc and the disc seat are provided with a fixing mechanism for pressing the middle shaft sleeve in the tripod upward and downward and radially aligning the seat tube in the tripod, a detection unit and a correction unit for detecting and correcting the head tube in the tripod are sequentially arranged on the bottom box; the correction device realizes the flow operation of the tripod correction operation, and only needs the operator to feed and discharge the tripod, so that the positioning and fixing before the detection of the tripod can be automatically realized, and then the automatic detection and correction process is carried out, compared with the existing naked eye observation and manual correction, the correction efficiency is high, the labor intensity is low, and the correction effect is better.

Description

Technical Field

[0001] This invention relates to the field of bicycle manufacturing technology, and specifically discloses a high-efficiency calibration device for bicycle tripods. Background Technology

[0002] A bicycle frame is typically manufactured by separately processing the seat tube, head tube, crossbeam, diagonal beam, and bottom bracket, and then welding them together. However, due to factors such as welding precision and welding stress, the center lines of the components may not be on the same plane. Therefore, after welding, a correction process is required to ensure that the axial center lines of the seat tube and head tube in the frame are on the same plane.

[0003] Most existing bicycle frame calibration devices use manual calibration. First, the bicycle frame is placed on the calibration platform and fixed as required. Then, the offset between the seat tube and head tube is observed visually. Finally, the operator manually calibrates according to the offset.

[0004] For example, utility model patent application number 2020214491391 discloses a bicycle front frame correction device, including a base, a clamping mechanism for fixing the bottom bracket sleeve, a first detection mechanism for detecting the bending degree of the crossbeam, a second detection mechanism for detecting the bending degree of the diagonal beam, and a bending degree correction mechanism for correcting the bending degree of the frame. The clamping mechanism, the first detection mechanism, and the second detection mechanism are all located on the upper end of the base and fixedly connected to the base. The first detection mechanism is located on one side of the crossbeam, and the second detection mechanism is located on one side of the diagonal beam. The correction device disclosed in this patent is the most commonly used bicycle triangle frame correction fixture. During the correction process, the triangle is clamped and fixed by the clamping mechanism, and then the detection mechanism is used for detection. After the detection is completed, manual correction is still required. Manual correction is not only labor-intensive, but also requires manual reciprocating correction to ensure the correction effect, which cannot achieve efficient correction of the bicycle triangle frame. Furthermore, the calibration process requires manual loading and clamping using a clamping mechanism. After calibration, the clamping mechanism must be removed before the tripod can be taken off. The entire process is time-consuming and significantly reduces the calibration efficiency of the bicycle tripod. Since existing bicycle front frame calibration devices cannot achieve efficient calibration of the bicycle tripod, this application proposes a streamlined automatic calibration device for the bicycle tripod to achieve a highly efficient calibration process. Summary of the Invention

[0005] The present invention aims to provide a high-efficiency bicycle frame correction device to solve the shortcomings of existing bicycle front frame correction devices that cannot achieve automatic and efficient correction of the bicycle frame.

[0006] This invention is achieved through the following technical solution:

[0007] A high-efficiency bicycle frame alignment device includes a base box and a control box. A disc seat is fixed at the upper end of the base box. A turntable for rotating and transporting the frame is rotatably arranged in the disc seat. The turntable and the disc seat are provided with a fixing mechanism for pressing the bottom sleeve of the frame vertically and for radially aligning the seat tube of the frame.

[0008] The base box is sequentially equipped with a detection unit and a correction unit for detecting and correcting the head tube in the tripod; wherein, the detection unit includes a strip plate arranged parallel to the head tube in the tripod and a first telescopic member for driving the strip plate to move downward. Hollow cylinders are provided at both ends of the strip plate, and a downwardly positioned pressing rod is inserted into the hollow cylinder. The upper end of the pressing rod is connected to a pressure sensor through a third spring, and the lower end is connected to a detection pressure roller.

[0009] The correction unit includes a base plate parallel to the head tube in the tripod and a second telescopic component for driving the base plate to move downward. A swing bar is rotatably connected to one side of the base plate. The two ends of the swing bar are symmetrically provided with strip-shaped openings. Vertically downward correction levers are connected to the strip-shaped openings through limiting blocks. The lower ends of the two correction levers are connected to the inserts, and a fourth spring is provided between the two correction levers. An adsorption assembly is provided on the base plate to realize the opposite movement of the two correction levers. A drive assembly for driving the swing bar to rotate is provided on the back of the base plate.

[0010] As a further feature of the above scheme, a rotating groove is provided in the disc base. The rotating groove is composed of a large circular arc segment, a small circular arc segment and a transition segment for connection, which are concentrically arranged. The turntable is concentrically arranged in the rotating groove. Several side plates are evenly arranged on the turntable. A radial moving rod is provided through each side plate. A first spring is provided between the radial moving rod and the side plate. The outer end of the radial moving rod is provided with a first abutting wheel that acts on the inner wall of the rotating groove. The inner end is configured to be equal to the inner diameter of the seat tube in the tripod and to have a reduced diameter structure.

[0011] As a further provision of the above scheme, an upper circular plate and a lower circular plate are concentrically arranged on the turntable. A positioning element aligned with each radial moving rod is provided on the lower circular plate. An axial pressure rod aligned vertically with each positioning element is provided through the upper circular plate. A second spring is provided between the axial pressure rod and the upper circular plate. A second abutting wheel is provided at the upper end of the axial pressure rod, and a flat pressure block is provided at the lower end to press the upper end of the central shaft sleeve in the upper triangular frame of the positioning element.

[0012] As a further feature of the above scheme, a top plate is fixed above the upper circular plate, and a guide ring block that interacts with the second abutting wheel is fixed on the lower surface of the top plate, and the guide ring block is provided with an inwardly concave guide groove corresponding to the large circular arc segment.

[0013] As a further provision of the above scheme, the detection unit includes a first bracket, the first telescopic member is fixed to the upper end of the first bracket, and the strip plate is connected to the lower end of the first telescopic member.

[0014] As a further provision of the above scheme, the correction unit includes a second bracket, the second telescopic member is fixed to the upper end of the second bracket, and the seat plate is connected to the lower end of the second telescopic member.

[0015] As a further provision of the above scheme, the adsorption assembly includes a metal block fixed to the upper end of the correction lever, and electromagnets that interact with the corresponding metal blocks are provided at both ends of the base plate.

[0016] As a further provision of the above scheme, the drive assembly includes a third telescopic member, the end of which is connected to a rack, the swing bar is rotatably connected to the base plate via a pin, and a gear that meshes with the rack is provided at the end of the pin.

[0017] As a further feature of the above solution, the disc base is provided with a drive component that enables the turntable to rotate at a set angle.

[0018] The calibration device disclosed in this invention uses the rotation of a turntable to rotate and transport the loaded tripod. During the transport process, positioning parts and flat-mouth pressure blocks are used to press and fix the central sleeve of the tripod. At the same time, the insertion of a radial moving rod is used to achieve radial alignment of the seat tube in the tripod. The combination of these two functions can achieve the state of the tripod before detection and calibration.

[0019] The fixed tripod is then moved to the detection unit. The detection unit uses two detection pressure rollers to press down on the lower surfaces of both ends of the tripod head tube. Through feedback from springs and pressure sensors, the offset of the head tube relative to the entire tripod plane can be obtained, and the corresponding output signal is automatically generated by the control processing module.

[0020] After the test is completed, the tripod is moved to the calibration unit. The test unit uses two pins to be inserted into both ends of the tripod head tube. Then, the transmission action between the gear and rack is used to make the swing bar rotate around the pin shaft. During the rotation, the calibration levers connected at both ends move up and down. The offset correction work of the tripod head tube relative to the entire tripod plane can be achieved by the operation of the pins.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The bicycle tripod high-efficiency calibration device disclosed in this invention realizes the assembly line operation of tripod calibration. It only requires the operator to load and unload the tripod to automatically achieve the positioning and fixation of the tripod before testing. Then, it can automatically test and calibrate. Compared with the existing visual inspection and manual calibration, it not only has high calibration efficiency and low labor intensity, but also achieves better calibration results.

[0023] The detection unit in this invention utilizes two sets of detection rollers, springs, and roller sensors to accurately acquire the offset of both ends of the tripod head tube relative to the entire tripod plane, and then automatically generates corresponding correction commands based on the offset. At the same time, the entire correction unit can control the degree of correction of the tripod head tube during the correction process by controlling the extension or retraction of the hydraulic device and the extension distance. Its structure is ingenious and the correction effect is excellent.

[0024] The high-efficiency tripod correction device disclosed in this invention utilizes the interaction between two abutting wheels and the groove wall of the rotating groove and the guide ring block during the rotation of the turntable to achieve automatic clamping and radial alignment of the tripod. It eliminates the need for numerous cylinders or other driving components to fix the tripod before correction. Its structural design is simple and provides excellent fixation effect for the tripod. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a three-dimensional structural diagram of the present invention from a first angle;

[0027] Figure 2 This is a schematic diagram of the second-angle three-dimensional structure of the present invention;

[0028] Figure 3 This is a top view of the disk base structure in this invention.

[0029] Figure 4 This is a schematic diagram of the three-dimensional structure of the turntable, side plate, and lower circular plate in this invention;

[0030] Figure 5 This is a schematic diagram of the three-dimensional structure of the disc base, top plate, guide ring block, etc. in this invention;

[0031] Figure 6 For the present invention Figure 4 Enlarged structural diagram at point A;

[0032] Figure 7 For the present invention Figure 4 Enlarged structural diagram at point B;

[0033] Figure 8 This is a three-dimensional structural diagram of the detection unit in this invention;

[0034] Figure 9 This is a schematic diagram of the internal planar structure of the hollow cylinder in this invention;

[0035] Figure 10 This is a three-dimensional structural diagram of the first angle of the correction unit in this invention;

[0036] Figure 11 This is a schematic diagram of the second angle three-dimensional structure of the correction unit in this invention. Detailed Implementation

[0037] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0038] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The following will refer to the appendix... Figures 1-11 This application will be described in detail with reference to the embodiments. Example 1

[0039] Example 1 discloses a high-efficiency bicycle tripod correction device, refer to the attached document. Figure 1 and attached Figure 2 The calibration device includes a base box 1, a control box 2 is mounted on the side of the base box 1, and a corresponding control processing module is installed inside the control box. A disc base 3 is fixed to the upper surface of the base box 1, and a rotating groove 301 is formed inside the disc base 3. (See attached diagram) Figure 3 The inner wall trajectory of the rotating groove 301 includes a large circular arc segment 3011 and a small circular arc segment 3012 arranged concentrically, and then a smooth transition segment 3013 is provided at both ends of the large circular arc segment and the small circular arc segment.

[0040] Reference Appendix Figure 4 and attached Figure 6A turntable 4, concentric with the large arc segment 3011 and the small arc segment 3012, is arranged in the rotating groove 301. A drive assembly 5, which enables the turntable 4 to rotate at a set angle, is mounted on the turntable base 3. The drive assembly includes a motor, a transmission component, and a transmission wheel located at the lower end of the motor and the turntable 4. The transmission component is positioned between the two transmission wheels to transmit power. The transmission component can be a chain or a belt, and the transmission wheel can be a sprocket or a pulley.

[0041] A plurality of upwardly extending side plates 400 are evenly arranged on the outer circular surface of the turntable 4. A radial guide cylinder 401 is provided on each side plate 401, and a radial moving rod 402 is inserted into each radial guide cylinder 401. A first spring 403 is provided between the radial moving rod 402 and the side plate 401. A first abutting wheel 404 that acts on the inner wall of the rotating groove 301 is connected to the outer end of the radial moving rod 402. At the same time, the diameter of the radial moving rod 402 is the same as the inner diameter of the seat tube on the tripod, and its inner end is set in a narrowing shape, so as to facilitate the insertion of the radial moving rod 402 into the seat tube on the tripod.

[0042] Reference Appendix Figure 7 An upper circular plate 6 and a lower circular plate 7 are concentrically arranged on the upper surface of the turntable 4, and both the upper circular plate 6 and the lower circular plate 7 are fixedly mounted to the turntable 4. Positioning elements 701, aligned with each radially moving rod 402, are arranged in a circular array on the lower circular plate 7, allowing the central bushing on the tripod to be inserted into the positioning elements 701 for fixation. (See attached diagram) Figure 7 An axial pressure rod 601 is vertically inserted into the upper circular plate 6 directly above each positioning component 701. A second spring 602 is provided between the axial pressure rod and the upper circular plate 6. A second abutment wheel 603 is connected to the upper end of each axial pressure rod, and a flat-mouth pressure block 604 is connected to its lower end. The flat-mouth pressure block 604 can press and fix the upper end face of the central bushing inserted on the positioning component 701.

[0043] Reference Appendix Figure 2 and attached Figure 5 A column 8 is fixed at the center of the disc base 3, passing through the turntable 4, the upper circular plate 6, and the lower circular plate 7, allowing the entire disc base 3 to rotate around the column 8. A top plate 9 is provided at the top of the column 8, and a guide ring block 10 is fixed on the lower surface of the top plate 9. The guide ring block 10 coincides vertically with the annular movement trajectory of the second abutment wheel 603, and an inwardly recessed guide groove 101 corresponding to the large arc segment 3011 is provided on the guide ring block 10. When the second abutment wheel 603 moves to the inwardly recessed guide groove 101, the axial pressure rod 601 will move upward through the action of the second spring 602, thereby releasing the clamping effect on the triangular bracket of the positioning member 701.

[0044] Reference Appendix Figure 1 and attached Figure 2 A detection unit 11 and a correction unit 12 are sequentially arranged on the base box 1, and both the detection unit 11 and the correction unit 12 are positioned corresponding to the small arc segment 3012. For details of the detection unit 11, please refer to the attached document. Figure 8 and attached Figure 9 It includes a first bracket 111 fixedly connected to the base box 1, a first cylinder 112 is provided at the upper end of the first bracket 111, a strip plate 113 parallel to the upper tube of the tripod is connected to the lower end of the first cylinder 112, hollow cylinders 114 are provided at both ends of the lower surface of the strip plate 113, and pressure sensors 115 are provided at the upper end of the hollow cylinders 114. The pressure sensors 115 are electrically connected to the control processing module in the control box.

[0045] A pressing rod 116 passes through the lower end of the hollow cylinder 114, and an end block 117 is connected to the upper end of the pressing rod 116. A third spring 118 is then provided between the end block 117 and the pressure sensor 115. Finally, a detection pressure roller 119 acting on the end of the head tube of the tripod is provided at the lower end of the pressing rod 116. The detection unit 11 disclosed in this embodiment pushes the strip plate 113 vertically downward, so that the two detection pressure rollers 119 press on the upper surfaces of both ends of the head tube of the tripod. Then, through the action of the third spring 118, the pressing stroke of the detection pressure rollers 119 can be fed back in real time through the pressure sensor 115. The difference in the pressing stroke of the two pressure sensors 115 can be used to determine the offset of the head tube of the tripod relative to the entire plane of the tripod. The control processing module automatically generates the corresponding output signal, thereby controlling the correction unit 12 to perform the correction action.

[0046] Reference Appendix Figure 10 and attached Figure 11The correction unit 12 includes a second bracket 121 fixedly connected to the base box 1. A second cylinder 122 is provided at the upper end of the second bracket 121, and a base plate 123 is connected to the lower end of the second cylinder 122. The base plate 123 is also arranged parallel to the head tube of the tripod. A swing bar 124 is rotatably connected to one side of the base plate 123 via a pin. A strip-shaped opening 1241 is provided at both the left and right ends of the swing bar 124 with the pin as the center. A vertically downward correction lever 125 is provided at each strip-shaped opening 1241, and a limiting block extending into the strip-shaped opening 1241 is provided at the upper end of the correction lever 125. At the same time, inserts 127 that can extend into both ends of the tripod head tube are connected to the lower ends of the opposite sides of the two correction levers 125. To enable the two inserts 127 to automatically insert into both ends of the tripod head tube, a fourth spring 131 is also provided between the correction levers 125. A metal block 132 is provided on the top of the two correction levers 125. Then, an electromagnet 133 corresponding to the metal block 132 is provided at both ends of the base plate 123. When the electromagnet 133 is energized, it generates an attraction force on the metal block 132, which can make the two correction levers 125 move away from each other. Then, when the current to the electromagnet 133 is cut off, they will move closer to each other under the action of the fourth spring 131.

[0047] Finally, a gear 128 is connected to the back of the base plate 123 through the pin shaft, and a rack 129 meshes with the gear 128. In this figure, the rack 129 is arranged parallel to the lower end of the gear 128 and matches the slide rail at the lower end of the base plate 123. Finally, a hydraulic device 130 is connected to the end of the gear 128. Of course, the hydraulic device can be replaced by a cylinder.

[0048] The efficient bicycle frame alignment device disclosed in this invention operates by a drive assembly that rotates the turntable 3, upper circular plate 6, and lower circular plate within the rotating groove 301. When the radial moving rod 402 on the turntable 3 rotates to the large arc segment 3011, it is pushed radially outward by the first spring 403 and abuts against the groove wall of the large arc segment 3011. Simultaneously, the axial pressure rod 601 rotates to the concave guide groove 101, and is pushed upward by the second spring 602, causing the second abutting wheel 603 to abut against the concave guide groove 101. At this position, an operator or robot can load the bicycle frame, insert the center axle sleeve into the positioning member 701, and radially position the seat tube of the frame.

[0049] Subsequently, as the turntable 3, upper circular plate 6, and lower circular plate continue to rotate, due to the action between the second abutting wheel 603 and the guide ring block 10, and the action between the first abutting wheel 404 and the groove wall of the small arc segment 3012, the flat pressure block 604 moves downward, thereby pressing the central shaft sleeve of the tripod onto the positioning member 701. The radial moving rod 402 moves inward synchronously and is inserted into the seat tube of the tripod to make it radially aligned, thereby enabling the tripod to be fixed before testing and correction.

[0050] Subsequently, as the tripod moves directly below the detection unit 11 along with the turntable 3, the first cylinder 112 is activated to push the strip plate 113 downwards, causing the two detection pressure rollers 119 to press against the upper surfaces of both ends of the tripod head tube. Then, through the action of the third spring 118, the pressing stroke of the detection pressure rollers 119 can be fed back in real time through the pressure sensor 115. The difference in the pressing stroke of the two pressure sensors 115 can be used to determine the offset of the head tube on the tripod relative to the entire tripod plane, and the control processing module automatically generates the corresponding output signal.

[0051] Next, as the tripod moves directly below the correction unit 12 along with the turntable 3, the second cylinder 122 is activated to push the base plate 123 downwards until the inserts 127 are aligned with both ends of the tripod head tube. Then, the current to the electromagnet 133 is disconnected, causing the inserts 127 to move closer together under the force of the fourth spring 131, thus inserting the inserts 127 into both ends of the tripod head tube. At this time, the hydraulic device 130 extends or shortens according to the signal from the control processing module, and then, under the meshing transmission of the gear and rack, the swing bar 124 rotates around the pin. As the swing bar 124 rotates, the correction levers 125 at both ends move in opposite directions, thus achieving the offset correction of the tripod head tube relative to the entire tripod plane.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency bicycle frame correction device, comprising a base box and a control box, characterized in that, A disc base is fixed at the upper end of the base box. A turntable for rotating and transporting the tripod is rotatably arranged in the disc base. The turntable and the disc base are provided with a fixing mechanism for pressing the central sleeve of the tripod vertically and for aligning the seat tube of the tripod radially. The base box is sequentially equipped with a detection unit and a correction unit for detecting and correcting the head tube in the tripod; wherein, the detection unit includes a strip plate arranged parallel to the head tube in the tripod and a first telescopic member for driving the strip plate to move downward. Hollow cylinders are provided at both ends of the strip plate, and a downwardly positioned pressing rod is inserted into the hollow cylinder. The upper end of the pressing rod is connected to a pressure sensor through a third spring, and the lower end is connected to a detection pressure roller. The correction unit includes a base plate parallel to the head tube in the tripod and a second telescopic component for driving the base plate to move downward. A swing bar is rotatably connected to one side of the base plate. The two ends of the swing bar are symmetrically provided with strip-shaped openings. Vertically downward correction levers are connected to the strip-shaped openings through limiting blocks. The lower ends of the two correction levers are connected to the inserts, and a fourth spring is provided between the two correction levers. An adsorption assembly is provided on the base plate to realize the opposite movement of the two correction levers. A drive assembly for driving the swing bar to rotate is provided on the back of the base plate. The disc base is provided with a rotating groove, which is composed of a large arc segment, a small arc segment and a transition segment for connection, all concentrically arranged. The turntable is concentrically arranged in the rotating groove, and several side plates are evenly arranged on the turntable. A radial moving rod is provided through each side plate, and a first spring is provided between the radial moving rod and the side plate. The outer end of the radial moving rod is provided with a first abutting wheel that acts on the inner wall of the rotating groove, and the inner end is configured to be equal to the inner diameter of the seat tube in the tripod and to have a reduced diameter structure. The turntable is concentrically provided with an upper circular plate and a lower circular plate. The lower circular plate is provided with a positioning component aligned with each radial moving rod. The upper circular plate is provided with an axial pressure rod aligned vertically with each positioning component. A second spring is provided between the axial pressure rod and the upper circular plate. The upper end of the axial pressure rod is provided with a second abutment wheel, and the lower end is provided with a flat pressure block that presses the upper end of the central shaft sleeve in the upper triangular frame of the positioning component.

2. The high-efficiency bicycle frame correction device according to claim 1, characterized in that, A top plate is fixed above the upper circular plate, and a guide ring block that interacts with the second abutting wheel is fixed on the lower surface of the top plate. The guide ring block has an inwardly concave guide groove corresponding to the large circular arc segment.

3. The high-efficiency bicycle frame correction device according to claim 1, characterized in that, The detection unit includes a first bracket, the first telescopic member is fixed to the upper end of the first bracket, and the strip plate is connected to the lower end of the first telescopic member.

4. The high-efficiency bicycle frame correction device according to claim 1, characterized in that, The correction unit includes a second bracket, the second telescopic member is fixed to the upper end of the second bracket, and the seat plate is connected to the lower end of the second telescopic member.

5. The high-efficiency bicycle tripod correction device according to claim 4, characterized in that, The adsorption assembly includes a metal block fixed to the upper end of the correction lever, and electromagnets that interact with the corresponding metal blocks are provided at both ends of the base plate.

6. The high-efficiency bicycle frame correction device according to claim 4, characterized in that, The drive assembly includes a third telescopic member, the end of which is connected to a rack. The swing bar is rotatably connected to the base plate via a pin, and a gear that meshes with the rack is provided at the end of the pin.

7. The high-efficiency bicycle tripod correction device according to claim 1, characterized in that, The disc base is equipped with a drive component that enables the turntable to rotate at a set angle.

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