A semi-automatic positioning assembly jig for bicycle handlebars and its assembly process

Abstract

The invention discloses a semi-automatic positioning and assembling jig for bicycle handlebars and an assembly process thereof, and relates to the technical field of bicycle production. The device comprises a workbench, a positioning unit and a pneumatic handlebar-mounting unit; the positioning unit consists of a main positioning block and a plurality of auxiliary positioning blocks, so as to ensure that the position of the handlebar during the assembly process is clear and stable; the pneumatic handlebar-mounting unit accurately mounts a handlebar cover on the horn tube of the handlebar through a telescopic cylinder and an end sleeve nozzle, and the automatic assembly action of the design replaces the assembly step of manually sleeveing ​​the handlebar cover on the horn tube of the handlebar, and the design of automatically installing the handlebar cover through a multi-point limiting handlebar and a pneumatic handlebar-mounting unit effectively simplifies the installation process of the bicycle handlebar and the handlebar cover, improves the production efficiency and installation accuracy of the handlebar and the handlebar cover assembly, and also improves the installation quality; thereby solving the problems of difficult control of the installation quality of the handlebar cover and the handlebar and low assembly efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle production, and in particular to a semi-automatic positioning and assembling jig for a bicycle handlebar and an assembling process thereof. Background Art

[0002] In the rapid development of the shared bicycle industry, the reliability and efficiency of the vehicles are crucial to operators. However, unlike traditional bicycles, shared bicycles face some unique challenges, especially in the design and assembly of parts. In order to prevent the parts from being stolen or damaged, the parts of shared bicycles need to be designed just right, and it is difficult to disassemble the parts using conventional methods after assembly.

[0003] Among them, the installation process of the handlebar cover presents a more difficult problem: the handlebar covers of shared bicycles are usually designed not to be fixed with screws, but to rely on an inner diameter that is very close to the outer diameter of the handlebar stem, using an interference fit for tight assembly; utilizing the friction between the rubber of the handlebar cover and the handlebar stem, under tight fit, the handlebar cover is very difficult to move on the handlebar stem, so this design ensures safety and anti-theft, but it also brings significant assembly problems.

[0004] Therefore, workers need to spend a lot of effort in the process of assembling the handlebar cover and the handlebar rod, and even use tools such as hammers to hammer the handlebar cover onto the handlebar, or pick up the handlebar and smash the handlebar cover onto the assembly table when the handlebar cover cannot be inserted after being inserted into the handlebar for a certain distance, so as to smash the handlebar cover into the handlebar, and then the handlebar cover can be completely inserted into the handlebar; however, this installation method is relatively violent, easily causing damage to parts, and is also inefficient, resulting in waste of workers' labor, reducing the production line's capacity, and increasing product production costs.

[0005] Therefore, the current assembly method has seriously affected the production efficiency and cost control of shared bicycles. Due to the difficulty of assembly, the production capacity of the production line is limited, resulting in challenges for operators in meeting market demand and maintaining vehicle reliability. In addition, violent assembly will increase the complexity of the assembly process. For example, due to the large friction resistance between the handlebar cover and the handlebar, it is difficult to control the distance between the handlebar cover and the handlebar during violent installation, resulting in assembly errors and quality problems, further reducing the overall reliability and life of the handlebar; affecting the performance of the assembled shared bicycle, such as the comfort of holding the handlebar, affecting the feel and thus affecting the controllability of the handlebar.

[0006] In summary, it is found that the prior art has at least the following technical problems:

[0007] The existing interference fit assembly of the handlebar cover and the handlebar has the problem that the handlebar cover has a large insertion resistance, which makes it difficult to control the installation quality of the handlebar cover and the handlebar and the assembly efficiency is low. Summary of the invention

[0008] The purpose of the present invention is to provide a semi-automatic positioning assembly jig for bicycle handlebars and an assembly process thereof, so as to solve the problem that the interference fit assembly of the existing handlebar cover and the handlebar has large resistance to insertion of the handlebar cover, resulting in difficulty in controlling the installation quality of the handlebar cover and the handlebar and low assembly efficiency.

[0009] The various technical effects that can be produced by the preferred technical solutions among the various technical solutions provided by the present invention are described in detail below.

[0010] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0011] The present invention provides a semi-automatic positioning and assembly jig for bicycle handlebars, comprising a workbench and a positioning unit, wherein the positioning unit is installed on the workbench surface, and the positioning unit is used to fix the position of a placed handlebar; the positioning unit comprises a main positioning block and an auxiliary positioning block; the number of the auxiliary positioning blocks is an even number, and at least two of them are provided; the two auxiliary positioning blocks are centered on the main positioning block, and the two auxiliary positioning blocks are symmetrically arranged on both sides of the main positioning block in the horizontal transverse direction, and a longitudinal gap is provided between the two auxiliary positioning blocks and the main positioning block in the horizontal longitudinal direction; the main positioning block is used to clamp the shaft tube and the faucet of the handlebar and provide a central force point; the auxiliary positioning block is used to position the two side horn tubes of the handlebar and provide a side force point on the inner side of the two horn tubes; the two force points of the main positioning block combined with any one of the auxiliary positioning blocks form a two-point support, and the oblique line formed by the connection line of the two force points forms a support angle of 48-60 degrees with the length direction center line of the main positioning block; and a pneumatic handlebar sleeve unit, comprising a support arm, a pad, a telescopic cylinder and an end sleeve nozzle ; The support arm is installed on the workbench surface, and the support arm is located on the oblique side of the auxiliary positioning block; the pad is connected to the column of the support arm, and the telescopic end of the telescopic cylinder is installed on the pad at an oblique downward angle, and the telescopic end of the telescopic cylinder is connected to the end sleeve, so that the end sleeve corresponds to the end position of the horn tube of the fixed handlebar; a handle sleeve cavity is provided in the end sleeve for placing the handlebar sleeve; an air jet hole is provided on the bottom surface of the end sleeve, and the air jet hole penetrates into the handle sleeve cavity, and the air jet hole is used to High-pressure gas is introduced to fill the handlebar sleeve cavity; the telescopic cylinder is controlled to switch to an extending action, and the telescopic end of the telescopic cylinder drives the terminal sleeve to extend toward the end of the horn tube of the fixed handlebar, and the handlebar sleeve placed in the handlebar sleeve cavity is put on the horn tube of the handlebar and continuously pressed, and then the telescopic cylinder is controlled to switch to a retracting action, and high-pressure gas is introduced into the air jet hole at the same time, so that the wall surface of the handlebar sleeve cavity overcomes the friction with the outer surface of the handlebar sleeve, so that the handlebar sleeve cavity of the terminal sleeve is separated from the handlebar sleeve and retracts and returns to its original position following the telescopic end of the telescopic cylinder.

[0012] In one of the embodiments, the angle control of the support angle is used to make the auxiliary positioning block and the main positioning block form a clamping force arm to clamp the handlebars at the force angle. The handlebars are subjected to the oblique combined force from the pneumatic handlebar unit being inserted into the handlebar cover, thereby preventing the handlebars from moving when the handlebar cover is inserted.

[0013] In one of the embodiments, two manual control valves and an air source processor are also provided on the surface of the workbench; the air source processor is used to access a high-pressure air source, and is connected to the air inlets of the two manual control valves through an air pipe; one of the manual control valves is connected to the air pipes of the two parallel telescopic cylinders, and the other manual control valve is connected to the air jet holes of the two parallel end nozzles through an air pipe, and the two manual control valves respectively control the air inlet and outlet of the two telescopic cylinders and the air jet holes of the two end nozzles.

[0014] In one of the embodiments, a first arc groove is provided on the surface of the workbench at the installation position of the auxiliary positioning block, the inner arc of the first arc groove faces the main positioning block, and is used to adjust the installation position of the auxiliary positioning block, so that the relative position of the supporting surface of the auxiliary positioning block and the handlebar horn tube can be adjusted; on the surface of the workbench, a second arc groove is provided at the installation position of the bottom plate of the support arm, the inner arc of the second arc groove faces the auxiliary positioning block, and is used to adjust the installation position of the support arm and adjust the angle of the end nozzle toward the handlebar horn tube; a straight groove is provided on the bottom plate of the support arm, which is used to cooperate with the second arc groove to fix the support arm and adjust the distance between the end nozzle and the end of the handlebar horn tube.

[0015] In one of the embodiments, a vertical slot is provided on the column of the support arm; a strip slot is provided on the pad; the pad is connected and fixed to the column of the support arm by bolts passing through the strip slot and the vertical slot, and the height and angle of the pad are adjustable.

[0016] In one of the embodiments, the end nozzle is made of PET resin, and is used to adapt to and withstand the impact action of the handlebar cover being repeatedly inserted into the handlebar cover cavity and repeatedly extended and retracted by the telescopic cylinder; the auxiliary positioning block is made of PET resin, and is used to cyclically withstand the impact force when the handlebar is driven by the end nozzle to put on the handlebar cover; the active positioning block is made of POM resin, and is used for rigidly fixed handlebars.

[0017] An assembly process is also provided, comprising the following steps: S1: cleaning a workbench surface; checking the matching consistency of the assembled handlebar and handlebar cover, and checking the shape adaptability of the handlebar cover and the handlebar cover cavity;

[0018] S2: handlebar fixing and positioning;

[0019] S2.1: Place the handlebar shaft and stem into the groove in the center of the main locating block, ensuring that the stem is properly positioned and provides a central point of force;

[0020] S2.2: Adjust the position of the auxiliary positioning block to ensure that the supporting surface of the auxiliary positioning block corresponds to the clevis of the handlebar, and ensure that the supporting surface of the auxiliary positioning block is in close contact with the side of the clevis of the handlebar;

[0021] S2.3: After adjusting the position of the auxiliary positioning block, use an angle measuring tool to make the two support points formed by the midpoint of the auxiliary positioning block's support surface and the midpoint of the groove midline of the main positioning block, and the oblique line formed by the connecting line of the two support points and the midline of the groove length direction of the main positioning block form a support angle of 48-60 degrees to ensure stable support; then lock the position of the two auxiliary positioning blocks with bolts;

[0022] S3: Adjust the position of the end nozzle;

[0023] S3.1: Adjust the position and angle of the bottom plate of the support arm, insert the handlebar cover into the handlebar cover cavity of the end cover mouth, so that the cover hole of the handlebar cover on the end cover mouth corresponds to the end of the clevis tube of the handlebar; lock the position of the bottom plate of the support arm with bolts;

[0024] S3.2: Adjust the downward angle of the pad on the support arm column so that the telescopic trajectory of the telescopic cylinder is parallel to the end of the handlebar horn tube; lock the position of the pad with bolts;

[0025] S4: The semi-automatic positioning and assembly jig for bicycle handlebars is tested. The handlebar cover is inserted into the handlebar cover cavity of the end cover nozzle, the handlebar is placed on the main positioning block and the auxiliary positioning block, the telescopic cylinder is controlled to extend, and the position of the handlebar cover inserted into the handlebar horn tube is checked; the position of the handlebar cover inserted into the handlebar horn tube is measured, and if the handlebar cover is inserted into the handlebar horn tube, the subsequent batch assembly of the handlebar and the handlebar cover is started; if the handlebar cover is not inserted into the right position, the position of the bottom plate of the support arm and the position of the pad on the column of the support arm are adjusted to make the end cover nozzle close to the end of the handlebar horn tube again;

[0026] S5: Mass assembly of handlebar covers and handlebars;

[0027] S5.1: Place the handlebar cover to be installed into the handlebar cover cavity of the end cover nozzle; place the handlebar on the main positioning block and the auxiliary positioning block; control the telescopic cylinder to start and extend, so that the end cover nozzle extends and the handlebar cover is placed on the horn tube of the handlebar;

[0028] S5.2: After the handlebar cover is put into place, the telescopic cylinder is controlled to start to retract, and at the same time, the air jet hole is controlled to pass high-pressure gas, and the end cover nozzle is separated from the handlebar cover and retracted;

[0029] S6: After the worker visually checks to confirm that the handlebar cover is fully installed, he / she will check whether the handlebar cover is flat and whether it is moving or loose. If the handlebar cover is moving or loose, it needs to be maintained and handled in time to ensure that each assembled handlebar cover meets the standard quality requirements;

[0030] S7: looping through steps S5 and S6 until the production plan for the day is completed, and then stopping using the bicycle handlebar semi-automatic positioning assembly jig;

[0031] S8: When executing the second production plan or assembling the handlebar cover of another handlebar, the shape of the end cover mouth is changed, and steps S2 to S4 need to be re-executed.

[0032] The beneficial effects of the present invention are as follows:

[0033] The design of the semi-automatic positioning assembly jig for bicycle handlebars is aimed at improving the assembly efficiency and accuracy of bicycle handlebars and handlebar covers.

[0034] 1. Improve installation accuracy: The positioning unit consists of a main positioning block and multiple auxiliary positioning blocks to ensure the stability of the handlebar during assembly; the main positioning block is used to clamp the shaft tube and stem of the handlebar to provide a central fulcrum, while the auxiliary positioning block is used to position the two side clevis tubes of the handlebar and provide side fulcrum points on the inner side of the two clevis tubes; through this positioning design, the handlebar can be accurately positioned, and the handlebar can be ensured not to move when the handlebar cover is installed, providing a good support effect, thereby improving the accuracy and smoothness of the handlebar cover being inserted into the handlebar clevis tube.

[0035] 2. Good support force structure: The main positioning block and any auxiliary positioning block are combined to form a two-point support. The oblique line formed by the connection of the two fulcrum points forms a support angle of 48-60 degrees with the length center line of the main positioning block. Such a force structure provides an effective oblique support force in the opposite direction of the movement of the handlebar cover, which can effectively disperse the stress of the handlebar and the handlebar cover during the installation process, avoid deformation or damage of the handlebar due to single-point force, and further ensure the stability and reliability of the installation.

[0036] 3. Simplify the assembly process of the handlebar and the handlebar cover: the pneumatic handlebar cover unit realizes the semi-automatic installation of the handlebar cover through the cooperation of the support arm, the pad, the telescopic cylinder and the end cover nozzle; the end cover nozzle is driven by the telescopic end of the telescopic cylinder, and the handlebar cover is put on the horn tube of the handlebar, and the insertion action of the handlebar cover is ended; then the telescopic cylinder is controlled to start the retraction action, and at the same time, the high-pressure gas is filled into the handlebar cover cavity of the end cover nozzle through the air jet hole, so that the wall surface of the handlebar cover cavity overcomes the friction with the outer wall of the handlebar cover, so that the end cover nozzle can smoothly detach from the handlebar cover and retract to its original position without affecting the position of the handlebar cover on the horn tube of the handlebar, thereby avoiding the situation that the handlebar cover retreats. This process not only ensures the accuracy and quality of the handlebar cover installation, but also reduces the complexity of manual operation and improves work efficiency.

[0037] 4. Reduce labor intensity: The traditional assembly of handlebars and handlebar covers requires workers to manually fix and install them, which is time-consuming and laborious; the jig has greatly reduced the labor intensity of workers through semi-automatic design. Workers only need to perform simple operations to complete the precise installation of the handlebars, which helps to improve the overall efficiency of the production line and product quality.

[0038] 5. Improve production efficiency: Since the bicycle handlebar semi-automatic positioning assembly jig can realize semi-automatic operation, the installation speed of the handlebar cover is significantly improved. The coordinated use of the positioning unit and the pneumatic handlebar unit enables each assembly step to be completed quickly, thereby shortening the production cycle of the handlebar cover and handlebar assembly and increasing production.

[0039] 6. Significant economic benefits: Although the initial investment cost of the semi-automatic positioning and assembly jig for bicycle handlebars may be high, the improved assembly efficiency and reduced labor costs it brings have obvious economic benefits in the long run; it reduces the errors and rework costs caused by manual operations, improves product consistency and quality, and thus enhances the market competitiveness of the products.

[0040] In summary, the bicycle handlebar semi-automatic positioning assembly fixture effectively simplifies the assembly process of bicycle handlebars and handlebar covers through the design of multi-point limit handlebars and pneumatic handlebar units for automatic installation of handlebar covers. It not only improves the assembly accuracy and efficiency, but also reduces the labor intensity of workers. Compared with manual assembly of handlebars and handlebar covers, it has obvious advantages. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the implementation mode will be briefly introduced below. Obviously, the drawings described below are only some implementation modes of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0042] Figure 1It is a schematic diagram of the overall structure of the present invention from top view;

[0043] Figure 2 It is a structural schematic diagram of the end mouthpiece of the present invention;

[0044] Figure 3 It is a schematic structural diagram of the pneumatic handle unit of the present invention in which the telescopic cylinder is omitted.

[0045] The reference numerals are as follows:

[0046] 1. workbench; 11. first arc notch; 12. second arc notch;

[0047] 2. Positioning unit; 21. Main positioning block; 211. Center force point; 22. Auxiliary positioning block; 221. Side force point; 23. Support angle;

[0048] 3. Pneumatic sleeve handle unit; 31. Support arm; 311. Slot; 312. Vertical slot; 32. Pad; 321. Strip slot; 33. Telescopic cylinder;

[0049] 4. End sleeve mouth; 41. Sleeve cavity; 42. Jet hole;

[0050] 5. Handlebar cover;

[0051] 6. handlebar; 61. axle tube; 62. tappet; 63. horn tube;

[0052] 7. Manual control valve;

[0053] 8. Air source processor. DETAILED DESCRIPTION

[0054] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0055] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0056] A specific embodiment provides a semi-automatic positioning assembly fixture for bicycle handlebars and an assembly process thereof. The design of a multi-point limiting handlebar and a pneumatic handlebar cover unit for automatically installing the handlebar cover effectively simplifies the assembly process of the bicycle handlebar and the handlebar cover, improves the production efficiency and installation accuracy of the handlebar and handlebar cover assembly, and also improves the installation quality; and effectively solves the problem of the existing interference fit assembly of the handlebar cover and the handlebar, which has a large resistance to the insertion of the handlebar cover, resulting in difficulty in controlling the installation quality of the handlebar cover and the handlebar and low assembly efficiency.

[0057] Hereinafter, embodiments will be described with reference to the drawings. Note that all contents of the configurations shown in the following embodiments are not necessarily required as the solution to the invention described in the claims.

[0058] The first implementation example of the semi-automatic positioning assembly jig for bicycle handlebars is Figure 1 and Figure 2 As shown, it includes a workbench 1 and a positioning unit 2. The positioning unit 2 is installed on the workbench 1 and is used to fix the position of the handlebar 6. The positioning unit 2 includes a main positioning block 21 and an auxiliary positioning block 22. The number of the auxiliary positioning blocks 22 is even, and at least two are provided. The two auxiliary positioning blocks 22 are centered on the main positioning block 21, and the two auxiliary positioning blocks 22 are symmetrically arranged on both sides of the main positioning block 21 in the horizontal transverse direction. A longitudinal gap is provided between the two auxiliary positioning blocks 22 and the main positioning block 21 in the horizontal longitudinal direction. The main positioning block 21 is provided with a main positioning block 21. The shaft tube 61 and the tappet 62 are used to clamp the handlebar 6, and provide a central force point 211; the auxiliary positioning block 22 is used to position the two side horn tubes 63 of the handlebar 6, and provides a side force point 221 on the inner side of the two horn tubes 63; the two force points of the main positioning block 21 and any one of the auxiliary positioning blocks 22 form a two-point support, and the oblique line formed by the connection of the two force points forms a support angle 23 of 48-60 degrees with the length direction center line of the main positioning block 21; and the pneumatic handle unit 3, including a support arm 31, a pad 32, a telescopic cylinder 33 and an end nozzle 4; The support arm 31 is installed on the workbench 1, and the support arm 31 is located on the oblique side of the auxiliary positioning block 22; the pad 32 is connected to the column of the support arm 31, and the telescopic end of the telescopic cylinder 33 is installed on the pad 32 at an oblique downward angle, and the telescopic end of the telescopic cylinder 33 is connected to the end sleeve 4, so that the end sleeve 4 corresponds to the end position of the horn tube 63 of the fixed handlebar 6; the end sleeve 4 is provided with a sleeve cavity 41 for placing the handlebar sleeve 5; the bottom surface of the end sleeve 4 is provided with an injection hole 42, which penetrates into the sleeve cavity 41, and the injection hole 42 is used to pass high The high-pressure gas fills the handlebar sleeve cavity 41; the telescopic cylinder 33 is controlled to switch to the extension action, and the telescopic end of the telescopic cylinder 33 drives the terminal sleeve mouthpiece 4 to extend toward the end of the horn tube 63 of the fixed handlebar 6, and the handlebar sleeve 5 placed in the sleeve cavity 41 is sleeved on the horn tube 63 of the handlebar 6, and after continuous compression, the telescopic cylinder 33 is controlled to switch to the retraction action, and at the same time, high-pressure gas is introduced into the air jet hole 42, so that the wall surface of the sleeve cavity 41 overcomes the friction with the outer surface of the handlebar sleeve 5, so that the sleeve cavity 41 of the terminal sleeve mouthpiece 4 is separated from the handlebar sleeve 5 and retracts and returns to its original position following the telescopic end of the telescopic cylinder 33.

[0059] Among them, the angle control of the support angle 23 is used to make the auxiliary positioning block 22 and the main positioning block 21 form a clamping force arm at the force angle to clamp the handlebar 6. The handlebar 6 bears the oblique combined force from the pneumatic handlebar unit 3 being inserted into the handlebar cover 5 to prevent the handlebar 6 from moving when the handlebar cover 5 is inserted.

[0060] The design of the semi-automatic positioning and assembly jig for bicycle handlebars is aimed at improving the assembly efficiency and accuracy of the bicycle handlebar 6 and the handlebar cover 5, and its advantages are: 1. Improving installation accuracy: the positioning unit 2 is composed of a main positioning block 21 and a plurality of auxiliary positioning blocks 22 to ensure the stability of the handlebar 6 during the assembly process; the main positioning block 21 is used to clamp the shaft tube 61 and the tappet 62 of the handlebar 6, providing a central fulcrum 211, while the auxiliary positioning block 22 is used to position the two side horn tubes 63 of the handlebar 6, and provide side fulcrum points 221 on the inner sides of the two horn tubes 63; through this positioning design, the handlebar 6 can be accurately positioned, and when the handlebar cover 5 is installed, it can be ensured that the handlebar 6 will not move, providing a good support effect, thereby improving the accuracy and smoothness of the handlebar cover 5 being inserted into the horn tube 63 of the handlebar 6.

[0061] 2. Good support force structure: The main positioning block 21 and any one of the auxiliary positioning blocks 22 are combined to form a two-point support. The oblique line formed by the connection of the two force points and the length direction center line of the main positioning block 21 form a support angle 23 of 48-60 degrees. Such a force structure provides an effective oblique support force in the opposite direction of the movement of the handlebar cover 5, which can effectively disperse the stress of the handlebar 6 and the handlebar cover 5 during the installation process, avoid deformation or damage of the handlebar 6 due to single-point force, and further ensure the stability and reliability of the installation.

[0062] 3. Simplify the assembly process of the handlebar 6 and the handlebar cover 5: the pneumatic handlebar cover unit 3 realizes the semi-automatic installation of the handlebar cover 5 through the cooperation of the support arm 31, the pad 32, the telescopic cylinder 33 and the end cover nozzle 4; the end cover nozzle 4 is driven by the telescopic end of the telescopic cylinder 33, and the handlebar cover 5 is covered on the horn tube 63 of the handlebar 6, and the cover action of the handlebar cover 5 is completed; then the telescopic cylinder 33 is controlled to start the retraction action, and at the same time, the high-pressure gas is filled into the handlebar cover cavity 41 of the end cover nozzle 4 through the air jet hole 42, so that the wall surface of the handlebar cover cavity 41 overcomes the friction with the outer wall of the handlebar cover 5, so that the end cover nozzle 4 can smoothly detach from the handlebar cover 5 and retract to its original position, without affecting the position of the handlebar cover 5 on the horn tube 63 of the handlebar 6, thereby avoiding the situation that the handlebar cover 5 retreats. This process not only ensures the accuracy and quality of the installation of the handlebar cover 5, but also reduces the complexity of manual operation and improves work efficiency.

[0063] 4. Reduce labor intensity: The traditional assembly of the handlebar 6 and the handlebar cover 5 requires workers to manually fix and install, which is time-consuming and laborious; the jig has greatly reduced the labor intensity of workers through semi-automatic design. Workers only need to perform simple operations to complete the precise installation of the handlebar 6, which helps to improve the overall efficiency of the production line and product quality.

[0064] 5. Improve production efficiency: Since the semi-automatic positioning and assembly jig for bicycle handlebars 6 can realize semi-automatic operation, the installation speed of the handlebar cover 5 is significantly improved. The coordinated use of the positioning unit 2 and the pneumatic handlebar cover unit 3 enables each assembly step to be completed quickly, thereby shortening the production cycle of the assembly of the handlebar cover 5 and the handlebar 6 and improving the output.

[0065] 6. Significant economic benefits: Although the initial investment cost of the semi-automatic positioning and assembly jig for bicycle handlebars may be high, the improved assembly efficiency and reduced labor costs it brings have obvious economic benefits in the long run; it reduces the errors and rework costs caused by manual operations, improves product consistency and quality, and thus enhances the market competitiveness of the products.

[0066] As one optional implementation,

[0067] Regarding the control structure of the telescopic cylinder 33 and the jet hole 42, this embodiment Figure 1 and Figure 2 As shown, two manual control valves 7 and an air source processor 8 are also provided on the surface of the workbench 1; the air source processor 8 is used to access the high-pressure air source, and is connected to the air inlets of the two manual control valves 7 through air pipes; one of the manual control valves 7 is connected to the air pipes of the two parallel telescopic cylinders 33, and the other manual control valve 7 is connected to the air jet holes 42 of the two parallel end nozzles 4 through the air pipe, and the two manual control valves 7 respectively control the air inlet and outlet of the two telescopic cylinders 33 and the air jet holes 42 of the two end nozzles 4.

[0068] Regarding the position adjustment structure of the auxiliary positioning block 22 and the support arm 31, this embodiment Figure 1As shown, on the table top of the workbench 1, a first arc groove 11 is provided at the installation position of the auxiliary positioning block 22, and the inner arc of the first arc groove 11 faces the main positioning block 21, which is used to adjust the installation position of the auxiliary positioning block 22, so that the relative position of the supporting surface of the auxiliary positioning block 22 and the ram's horn tube 63 of the handlebar 6 can be adjusted; on the table top of the workbench 1, a second arc groove 12 is provided at the installation position of the bottom plate of the support arm 31, and the inner arc of the second arc groove 12 faces the auxiliary positioning block 22, which is used to adjust the installation position of the support arm 31 and adjust the angle of the end nozzle 4 toward the ram's horn tube 63 of the handlebar 6; a straight groove 311 is provided on the bottom plate of the support arm 31, which is used to cooperate with the second arc groove 12 to fix the support arm 31 and adjust the distance between the end nozzle 4 and the end of the ram's horn tube 63 of the handlebar 6.

[0069] Regarding the position adjustment structure of the support arm 31 and the pad 32, this embodiment Figure 3 As shown, a vertical slot 312 is provided on the column of the support arm 31; a strip slot 321 is provided on the pad 32; the pad 32 is connected and fixed to the column of the support arm 31 by bolts passing through the strip slot 321 and the vertical slot 312, and the height and angle of the pad 32 can be adjusted.

[0070] During application, the height and angle of the pad 32 can be adjusted through the vertical slot 312 on the column of the support arm 31 and the strip slot 321 on the pad 32, thereby adjusting the height and angle of the telescopic cylinder 33 so that the end nozzle 4 is accurately aligned with the end of the horn tube 63 of the handlebar 6.

[0071] Regarding the materials and forces that the above-mentioned end nozzle 4, auxiliary positioning block 22 and main positioning block 21 need to withstand, the end nozzle 4 is made of PET resin, and is used to adapt to and withstand the impact action of the handlebar cover 5 being repeatedly inserted into the cover cavity 41 and repeatedly extended and retracted by the telescopic cylinder 33; the auxiliary positioning block 22 is made of PET resin, and is used to cyclically withstand the impact force when the handlebar 6 is driven by the end nozzle 4 to cover the handlebar cover 5; the active positioning block is made of POM resin, and is used for rigidly fixed handlebar 6.

[0072] When used, PET resin has good impact resistance, wear resistance and smooth surface. When supporting the end sleeve 4, the smooth wall surface in the sleeve cavity 41 can reduce the friction between the sleeve cavity 41 and the handlebar sleeve 5, making it easier to reset the end sleeve 4, and further reducing the situation where the handlebar sleeve 5 is withdrawn from the handlebar 6 horn tube 63 due to the friction between the sleeve cavity 41 and the handlebar sleeve 5 when the end sleeve 4 is reset; PET resin has good impact resistance and wear resistance, which can make the sleeve cavity 41 not easy to expand due to wear, and the end sleeve 4 and the auxiliary positioning block 22 can also better withstand the expansion of the telescopic gas. Each time the cylinder 33 extends toward the handlebar 6 and transmits an impact force, the components are more resistant to impact and not easily damaged, thereby increasing the service life of the components and reducing equipment maintenance; POM resin, also known as Saigang, has excellent rigidity and high strength. The main positioning block 21 serves as the central force point of the positioning unit 2. When the telescopic cylinder 33 transmits the impact force to the clevis tube 63 of the handlebar 6, the auxiliary positioning block 22 serves as a lever point of force. The handlebar 6 faucet 62 and the shaft tube 61 will have a strong torsional force, and the main positioning block 21 needs to have sufficient rigidity and strength to withstand the torsional force of the handlebar 6. The main positioning block 21 supported by POM can provide sufficient fixing force.

[0073] Based on the above embodiment of the semi-automatic positioning and assembly jig for bicycle handlebars, an assembly process is provided, comprising the following steps: S1: cleaning the workbench surface; checking the matching consistency of the assembled handlebar and the handlebar cover, and checking the shape adaptability of the handlebar cover and the handlebar cover cavity;

[0074] S2: handlebar fixing and positioning;

[0075] S2.1: Place the handlebar shaft and stem into the groove in the center of the main locating block, ensuring that the stem is properly positioned and provides a central point of force;

[0076] S2.2: Adjust the position of the auxiliary positioning block to ensure that the supporting surface of the auxiliary positioning block corresponds to the handlebar horn tube, and ensure that the supporting surface of the auxiliary positioning block is in close contact with the side of the handlebar horn tube;

[0077] S2.3: After adjusting the position of the auxiliary positioning block, use an angle measuring tool to make the two support points formed by the midpoint of the auxiliary positioning block's support surface and the midpoint of the groove midline of the main positioning block, and the oblique line formed by the connecting line of the two support points and the midline of the groove length direction of the main positioning block form a support angle of 48-60 degrees to ensure stable support; then lock the position of the two auxiliary positioning blocks with bolts;

[0078] S3: Adjust the position of the end nozzle;

[0079] S3.1: Adjust the position and angle of the bottom plate of the support arm, insert the handlebar cover into the handlebar cover cavity of the end cover mouth, so that the cover hole of the handlebar cover on the end cover mouth corresponds to the end of the clevis tube of the handlebar; lock the position of the bottom plate of the support arm with bolts;

[0080] S3.2: Adjust the downward angle of the pad on the support arm column so that the telescopic trajectory of the telescopic cylinder is parallel to the end of the handlebar horn tube; lock the position of the pad with bolts;

[0081] S4: The semi-automatic positioning and assembly jig for bicycle handlebars is tested. The handlebar cover is inserted into the handlebar cover cavity of the end cover nozzle, the handlebar is placed on the main positioning block and the auxiliary positioning block, the telescopic cylinder is controlled to extend, and the position of the handlebar cover inserted into the handlebar horn tube is checked; the position of the handlebar cover inserted into the handlebar horn tube is measured, and if the handlebar cover is inserted into the handlebar horn tube, the subsequent batch assembly of the handlebar and the handlebar cover is started; if the handlebar cover is not inserted into the right position, the position of the bottom plate of the support arm and the position of the pad on the column of the support arm are adjusted to make the end cover nozzle close to the end of the handlebar horn tube again;

[0082] S5: Mass assembly of handlebar covers and handlebars;

[0083] S5.1: Place the handlebar cover to be installed into the handlebar cover cavity of the end cover nozzle; place the handlebar on the main positioning block and the auxiliary positioning block; control the telescopic cylinder to start and extend, so that the end cover nozzle extends and the handlebar cover is placed on the horn tube of the handlebar;

[0084] S5.2: After the handlebar cover is put into place, the telescopic cylinder is controlled to start to retract, and at the same time, the air jet hole is controlled to pass high-pressure gas, and the end cover nozzle is separated from the handlebar cover and retracted;

[0085] S6: After the worker visually checks to confirm that the handlebar cover is fully installed, he / she will check whether the handlebar cover is flat and whether it is moving or loose. If the handlebar cover is moving or loose, it needs to be maintained and handled in time to ensure that each assembled handlebar cover meets the standard quality requirements;

[0086] S7: looping through steps S5 and S6 until the production plan for the day is completed, and then stopping using the bicycle handlebar semi-automatic positioning assembly jig;

[0087] S8: When executing the second production plan or assembling the handlebar cover of another handlebar, the shape of the end cover mouth is changed, and steps S2 to S4 need to be re-executed.

[0088] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described.

[0089] The above is a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications are also considered as the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A semi-automatic positioning and assembly jig for bicycle handlebars, characterized in that: It comprises a workbench and a positioning unit, wherein the positioning unit is installed on the workbench surface and is used to fix the position of the placed handlebar; The positioning unit comprises a main positioning block and an auxiliary positioning block; the number of the auxiliary positioning blocks is an even number, and at least two of them are provided; the two auxiliary positioning blocks are centered on the main positioning block, and the two auxiliary positioning blocks are symmetrically arranged on both sides of the main positioning block in the horizontal transverse direction, and a longitudinal gap is provided between the two auxiliary positioning blocks and the main positioning block in the horizontal longitudinal direction; The main positioning block is used to clamp the shaft tube and the handlebar of the handlebar and provide a central force point; the auxiliary positioning block is used to position the two side horn tubes of the handlebar and provide a side force point on the inner side of the two horn tubes; the two force points of the main positioning block combined with any one of the auxiliary positioning blocks form a two-point support, and the oblique line formed by the connection of the two force points forms a support angle of 48-60 degrees with the length direction center line of the main positioning block; and a pneumatic sleeve unit, including a support arm, a backing plate, a telescopic cylinder and an end sleeve nozzle; The support arm is installed on the table surface of the workbench, and the support arm is located on the oblique side of the auxiliary positioning block; the pad is connected to the column of the support arm, and the telescopic end of the telescopic cylinder is installed on the pad at an oblique downward angle, and the telescopic end of the telescopic cylinder is connected to the end nozzle, so that the end nozzle corresponds to the end position of the horn tube of the fixed handlebar; The end sleeve is provided with a handlebar cavity in the end sleeve for placing the handlebar sleeve; An air jet hole is provided on the bottom surface of the end sleeve, and the air jet hole penetrates into the sleeve cavity, and the air jet hole is used to introduce high-pressure gas to fill the sleeve cavity; The telescopic cylinder is controlled to switch to the extension action, and the telescopic end of the telescopic cylinder drives the end sleeve to extend toward the end of the horn tube of the fixed handlebar, and the handlebar sleeve placed in the sleeve cavity is sleeved on the horn tube of the handlebar and continuously pressed, and then the telescopic cylinder is controlled to switch to the retraction action, and high-pressure gas is introduced into the air jet hole at the same time, so that the wall surface of the sleeve cavity overcomes the friction force with the outer wall surface of the handlebar sleeve, so that the sleeve cavity of the end sleeve is separated from the handlebar sleeve and follows the telescopic end of the telescopic cylinder to retract and return to its original position; The angle control of the support angle is used to make the auxiliary positioning block and the main positioning block form a clamping force arm to clamp the handlebars at the force angle, so that the handlebars bear the oblique force from the pneumatic handlebar unit being inserted into the handlebar cover, thereby preventing the handlebars from moving when the handlebar cover is inserted; Two manual control valves and an air source processor are also provided on the table top of the workbench; the air source processor is used to access the high-pressure air source and is connected to the air inlets of the two manual control valves through an air pipe; one of the manual control valves is connected to the air pipes of the two parallel telescopic cylinders, and the other manual control valve is connected to the air injection holes of the two parallel end nozzles through an air pipe, and the two manual control valves respectively control the air inlet and outlet of the two telescopic cylinders and the air injection holes of the two end nozzles; On the table top of the workbench, a first arc notch is provided at the installation position of the auxiliary positioning block, the inner arc of the first arc notch faces the main positioning block, and is used to adjust the installation position of the auxiliary positioning block so that the relative position of the supporting surface of the auxiliary positioning block and the handlebar clevis tube can be adjusted; A second arc notch is provided on the table top of the workbench at the installation position of the bottom plate of the support arm, the inner arc of the second arc notch faces the auxiliary positioning block, and is used to adjust the installation position of the support arm and adjust the angle of the end sleeve toward the handlebar horn tube; A straight groove is provided on the bottom plate of the support arm, which is used to cooperate with the second arc groove to fix the support arm and adjust the distance between the end sleeve and the end of the handlebar horn tube; The support arm has a vertical notch on its column; the pad has a strip notch; The pad is connected and fixed to the column of the support arm by bolts passing through the strip-shaped slot and the vertical slot, and the height and angle of the pad can be adjusted; The method comprises the following steps: S1: cleaning the workbench surface; checking the matching consistency of the assembled handlebar and handlebar cover, and checking the shape adaptability of the handlebar cover and the handlebar cover cavity; S2: handlebar fixing and positioning; S2.1: Place the handlebar shaft and stem into the groove in the center of the main locating block, ensuring that the stem is properly positioned and provides a central point of force; S2.2: Adjust the position of the auxiliary positioning block to ensure that the supporting surface of the auxiliary positioning block corresponds to the handlebar horn tube, and ensure that the supporting surface of the auxiliary positioning block is in close contact with the side of the handlebar horn tube; S2.3: After adjusting the position of the auxiliary positioning block, use an angle measuring tool to make the two support points formed by the midpoint of the auxiliary positioning block's support surface and the midpoint of the groove midline of the main positioning block, and the oblique line formed by the connecting line of the two support points and the midline of the groove length direction of the main positioning block form a support angle of 48-60 degrees to ensure stable support; then lock the position of the two auxiliary positioning blocks with bolts; S3: Adjust the position of the end nozzle; S3.1: Adjust the position and angle of the bottom plate of the support arm, insert the handlebar cover into the handlebar cover cavity of the end cover mouth, and make the cover hole of the handlebar cover on the end cover mouth correspond to the end of the clevis of the handlebar; Lock the position of the base plate of the support arm by means of bolts; S3.2: Adjust the downward angle of the pad on the support arm column so that the telescopic trajectory of the telescopic cylinder is parallel to the end of the handlebar horn tube; Lock the position of the pad by means of bolts; S4: The semi-automatic positioning and assembly jig for bicycle handlebars is tested. The handlebar cover is inserted into the handlebar cover cavity of the end cover nozzle, the handlebar is placed on the main positioning block and the auxiliary positioning block, the telescopic cylinder is controlled to extend, and the position of the handlebar cover inserted into the handlebar horn tube is checked; the position of the handlebar cover inserted into the handlebar horn tube is measured, and if the handlebar cover is inserted into the handlebar horn tube, the subsequent batch assembly of the handlebar and the handlebar cover is started; if the handlebar cover is not inserted into the right position, the position of the bottom plate of the support arm and the position of the pad on the column of the support arm are adjusted to make the end cover nozzle close to the end of the handlebar horn tube again; S5: Mass assembly of handlebar covers and handlebars; S5.1: Place the handlebar cover to be installed into the handlebar cover cavity of the end cover nozzle; place the handlebar on the main positioning block and the auxiliary positioning block; control the telescopic cylinder to start and extend, so that the end cover nozzle extends and the handlebar cover is placed on the horn tube of the handlebar; S5.2: After the handlebar cover is put into place, the telescopic cylinder is controlled to start and retract, and at the same time, the air jet hole is controlled to pass high-pressure gas, and the end cover nozzle is separated from the handlebar cover and retracted; S6: After the worker visually checks to confirm that the handlebar cover is fully installed, he / she will check whether the handlebar cover is flat and whether it is moving or loose. If the handlebar cover is moving or loose, it needs to be maintained and handled in time to ensure that each assembled handlebar cover meets the standard quality requirements; S7: looping through steps S5 and S6 until the production plan for the day is completed, and then stopping using the bicycle handlebar semi-automatic positioning assembly jig; S8: When executing the second production plan or assembling the handlebar cover of another handlebar, the shape of the end cover mouth is changed, and steps S2 to S4 need to be re-executed.

2. The semi-automatic positioning and assembly jig for bicycle handlebars according to claim 1 is characterized in that: The end sleeve is made of PET resin, and is used to adapt to and withstand the impact action of the handlebar sleeve cavity being repeatedly inserted into the handlebar sleeve and repeatedly extended and retracted by the telescopic cylinder; The auxiliary positioning block is made of PET resin and is used to cyclically withstand the impact force when the handlebar receives the end sleeve and drives the handlebar sleeve to be put on; The main positioning block is made of POM resin and is used for rigidly fixing the handlebar.

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