Pipe cutting device for bicycle accessory machining

Abstract

The invention relates to the technical field of bicycle accessory cutting, in particular to a pipe cutting device for bicycle accessory machining, which is characterized in that a guide mechanism, a cutting mechanism and a screening mechanism are arranged on the upper side of a machining table; through cooperation of the material guiding mechanism and the cutting mechanism, the cut reinforcing pipe fitting can be supported, and arc-shaped end openings in the two ends of the reinforcing pipe fitting can be stably limited by simulating alignment clamping of the two ends of the reinforcing pipe fitting and the U-shaped frame; therefore, the reinforced pipe fitting of which the horizontal bending deformation exceeds the error allowable range can be automatically inspected and identified; through cooperation of the screening mechanism and the material guiding mechanism, not only can the reinforced pipe fittings with vertical inclined bending deformation exceeding an error allowable range be automatically and accurately inspected and screened out, but also the qualified reinforced pipe fittings can be automatically guided and stably discharged; therefore, subsequent accurate alignment and welding forming of the reinforcing pipe fitting and the U-shaped handlebar are guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle accessory cutting, in particular to a pipe cutting device for processing bicycle accessories. Background Art

[0002] The U-shaped handlebar is a common bicycle handlebar design, and a transverse pipe for reinforcement is usually welded between the two vertical sections of the U-shaped handlebar, wherein both ends of the transverse reinforcing pipe are usually cut into symmetrical arc-shaped ports to facilitate the alignment and welding of the reinforcing pipe with the two vertical sections of the U-shaped handlebar.

[0003] In the prior art, a reinforced pipe fitting of a specific length is cut by processing a pipe. Usually, the processing pipe running forward and backward is driven to rotate in a directional manner by a rotating clamping chuck, and at the same time, a laser cutting knife is moved back and forth in a straight line along the outer surface of the end of the pipe to cut, so as to first cut a specific arc port at the front end of the processing pipe, and then the processing pipe is conveyed forward to a specific length by a conveying device. Then, according to the above-mentioned cutting operation and the moving trajectory of the laser cutting knife is adjusted accordingly, an arc port symmetrical to the front end arc port is cut at a specific position on the pipe, thereby completing the processing of a reinforced pipe fitting of a specific length with symmetrical arc ports at both ends.

[0004] However, the conventional method of cutting and processing the U-shaped handlebar reinforcement pipe has the following problems: 1. In the prior art, when the reinforcement pipe is cut, it usually falls directly and freely onto the receiving platform, which may cause the reinforcement pipe to be deformed to a certain extent due to the collision. In addition, since the rear end of the reinforcement pipe will be in close contact with the output end of the laser cutting knife when it is cut, when the reinforcement pipe falls, the arc-shaped port at the rear end will first collide with the receiving platform, which may cause the arc-shaped port at the rear end of the reinforcement pipe to be easily damaged, thereby affecting the subsequent precise alignment of the reinforcement pipe with the U-shaped handlebar and and welding forming; 2. In the prior art, since the processed pipe is usually a cantilever structure during the cutting process and will also undergo rapid directional rotation, the reinforced pipe fittings cut from the cantilever section of the pipe will usually produce a certain degree of bending deformation under the action of their own weight and centrifugal force. When the deformation of the reinforced pipe fittings exceeds the allowable error range, it will not only affect the subsequent precise alignment and welding forming of the reinforced pipe fittings with the U-shaped handlebar, but also require manual identification and screening of unqualified reinforced pipe fittings, thereby increasing the overall manual operating burden and reducing the overall processing efficiency of bicycle accessories. Summary of the invention

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a pipe cutting device for processing bicycle accessories, which is used to perform arc cutting processing on the reinforcement pipe of a U-shaped handlebar, comprising a processing table, and a material guiding mechanism and a cutting mechanism are arranged at the front and rear of the upper side of the processing table, and a screening mechanism is arranged at the upper side of the processing table and on the left side of the material guiding mechanism.

[0006] The cutting mechanism comprises a support table fixedly arranged on the upper side of the processing table, a control component and a conveying component are arranged at the front and rear of the upper side of the support table, and a cutting component is arranged at the front side of the control component.

[0007] The material guiding mechanism comprises a bottom plate fixedly arranged on the upper side of the processing table, a lifting assembly is arranged on the upper side of the bottom plate, and a supporting assembly, a limiting assembly and a tightening assembly are arranged on the lifting assembly.

[0008] The screening mechanism comprises a material collecting table fixedly arranged on the upper side of the processing table by front and rear symmetrical pillars, and a screening component and a supporting component are arranged on the material collecting table.

[0009] Preferably, the conveying assembly includes a rotating frame symmetrically fixed on the upper side of the support platform, and V-shaped wheels are arranged to rotate together between the left and right symmetrical rotating frames, wherein a motor with an output end fixedly connected to the left end of the V-shaped wheel is fixedly arranged on the left side of the left rotating frame.

[0010] Preferably, the control assembly includes a control console fixedly arranged on the upper side of the support platform, a rotary chuck is rotatably mounted on the control console, a through slot running through from front to back is provided on the rotary chuck, and a plurality of pneumatic clamps are evenly mounted on the front circumference of the rotary chuck.

[0011] Preferably, the cutting assembly includes a guide rail one which is fixedly arranged on the front side of the console through a connecting plate one and is located above the rotating chuck, an electric slider one which moves forward and backward is slidably arranged on the guide rail one, an L-shaped connecting plate is fixedly arranged on the lower side of the electric slider one, a guide rail two is fixedly arranged on the front side of the vertical section of the L-shaped connecting plate, an electric slider two which moves up and down is slidably arranged on the guide rail two, and a laser cutting knife is fixedly arranged on the front side of the electric slider two.

[0012] Preferably, the lifting assembly includes three guide rails symmetrically fixedly arranged on the upper side of the base plate, three electric sliders that move up and down are slidably arranged on the three guide rails, a lifting frame is fixedly arranged on the left side of the three electric sliders that are symmetrically arranged front and back, a pneumatic cylinder with a telescopic end that penetrates the lifting frame left and right is fixedly arranged on the right side of the lifting frame, a connecting platform that moves left and right is fixedly arranged on the telescopic end of the pneumatic cylinder, and a guide rod that is slidably connected to the lifting frame is fixedly arranged on the right side of the connecting platform front and back symmetrically.

[0013] Preferably, the supporting assembly includes an L-shaped connecting frame symmetrically fixedly arranged on the upper side of the lifting frame, and the left end of the horizontal section of the L-shaped connecting frame is fixedly provided with an L-shaped support plate located below the laser cutting knife, and the left end of the horizontal section of the L-shaped support plate is elastically rotatably provided with a rotating plate through a torsion spring rotating shaft.

[0014] Preferably, the limit assembly includes a fixed platform fixedly arranged at the front end of the connecting platform, a U-shaped groove penetrating from front to back is provided on the left side of the fixed platform, a limit clamping column with an arc surface on the rear side and located above the U-shaped groove is provided on the rear side of the fixed platform through rotation of a rotating shaft, a positioning rotating plate is fixedly arranged at the rear end of the rotating shaft, a clamping groove is provided on the upper side of the positioning rotating plate, a spring rod 1 is elastically slidably provided on the rear side of the fixed platform and above the positioning rotating plate through a support, and a clamping block is fixedly arranged on the lower end of the spring rod 1, which moves up and down and is positioned and clamped with the clamping groove.

[0015] Preferably, the clamping assembly includes an L-shaped limit plate fixedly arranged on the front side of the console through a connecting plate 2 located below the rotating chuck, wherein the lower end of the vertical section of the L-shaped limit plate is an inclined surface, and the rear end of the connecting platform is symmetrically and elastically slidably provided with a spring rod 2 through a support 2, and the front ends of the left-right symmetrical spring rods 2 are jointly fixedly provided with a return frame that moves forward and backward, and a driven groove that passes through the upper and lower parts and cooperates with the transmission of the vertical section of the L-shaped limit plate is opened in the return frame, and a spring rod 3 is elastically slidably provided on the front side of the return frame through a support 3, and a clamping column that moves up and down and is located below the horizontal section of the L-shaped limit plate is fixedly provided on the upper end of the spring rod 3, and a ball is rollingly provided on the upper end surface of the clamping column.

[0016] Preferably, the screening assembly includes an L-shaped screening plate fixedly arranged on the right side of the material collection table, U-shaped connecting frames are symmetrically fixedly arranged on the front and rear sides of the material collection table, a horizontal screening plate located above the L-shaped screening plate is commonly fixedly arranged at the upper ends of the front and rear symmetrical U-shaped connecting frames, and a separation protrusion with an inclined surface on the right side is fixedly arranged on the rear side of the horizontal screening plate.

[0017] Preferably, the support assembly includes a spring rod four which is elastically slidably arranged on the lower side of the aggregate table through a support four which is symmetrical in front and back. A fixed plate which moves left and right and is located on the right side of the L-shaped screening plate is fixedly arranged on the right end of the spring rod four. A support rod located below the horizontal section of the L-shaped screening plate is commonly fixedly arranged on the upper ends of the front and back symmetrical fixed plates, wherein a driven rod is fixedly arranged on the front side of the front fixed plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The present invention cooperates with the material guiding mechanism and the cutting mechanism, which can not only support the cut reinforced pipe fittings, but also impose stable limit on the arc ports at both ends of the reinforced pipe fittings by simulating the alignment and clamping of the two ends of the reinforced pipe fittings with the U-shaped frame, thereby not only avoiding the deformation of the reinforced pipe fittings due to falling and collision, but also automatically inspecting and identifying the reinforced pipe fittings whose horizontal bending deformation exceeds the allowable error range, thereby reducing the operational burden and labor cost of manual inspection and identification of the reinforced pipe fittings, and improving the overall inspection and identification efficiency.

[0020] 2. The present invention cooperates with the screening mechanism and the material guiding mechanism, which can not only realize automatic and accurate inspection and screening of reinforced pipes with vertical bending deformation exceeding the allowable error range, but also can automatically guide and stably cut qualified reinforced pipes, thereby ensuring not only the stability of the cutting of reinforced pipes, but also the subsequent accurate alignment and welding of the reinforced pipes with the U-shaped handlebars, and at the same time greatly reduces the operational burden of manual inspection and screening of unqualified processed pipes, thereby improving the overall processing efficiency of bicycle accessories. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention.

[0022] Figure 2 It is a partial cross-sectional schematic diagram of some structures of the present invention.

[0023] Figure 3 It is a schematic diagram of the material guiding mechanism and the screening mechanism structure.

[0024] Figure 4 It is a partial cross-sectional schematic diagram of the structure of the material guiding mechanism.

[0025] Figure 5 for Figure 4 Enlarged schematic diagram at point A in the middle.

[0026] Figure 6 It is a partial cross-sectional schematic diagram of the structure of the clamping component.

[0027] Figure 7 It is a partial cross-sectional schematic diagram of the screening mechanism structure.

[0028] In the figure: 1. Processing table; 2. Cutting mechanism; 21. Support table; 22. Conveying assembly; 221. Rotating frame; 222. V-shaped wheel; 223. Motor; 23. Control assembly; 231. Control console; 232. Rotating chuck; 233. Pneumatic clamp; 24. Cutting assembly; 241. Guide rail 1; 242. Electric slider 1; 243. Guide rail 2; 244. Electric slider 2; 245. Laser cutting knife; 3. Material guiding mechanism; 31. Bottom plate; 32. Lifting assembly; 321. Guide rail 3; 322. Electric slider 3; 323. Lifting frame; 324. Pneumatic cylinder; 325. Connecting table; 33. Supporting assembly; 331. L-shaped connecting frame; 332, L-shaped supporting plate; 333, rotating plate; 34, limiting assembly; 341, fixed platform; 342, U-shaped groove; 343, limiting clamping column; 344, positioning rotating plate; 345, clamping groove; 346, clamping block; 35, tightening assembly; 351, L-shaped limiting plate; 352, return frame; 353, driven groove; 354, tightening clamping column; 4, screening mechanism; 41, collecting platform; 42, screening assembly; 421, L-shaped screening plate; 422, U-shaped connecting frame; 423, horizontal screening plate; 424, separation protrusion; 43, supporting assembly; 431, fixed plate; 432, supporting rod; 433, driven rod. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1 A pipe cutting device for processing bicycle accessories is used for arc cutting of reinforcement pipes of U-shaped handlebars, comprising a processing table 1, a material guiding mechanism 3 and a cutting mechanism 2 are arranged on the front and rear sides of the upper side of the processing table 1, and a screening mechanism 4 is arranged on the upper side of the processing table 1 and on the left side of the material guiding mechanism 3.

[0031] See also Figure 1 The cutting mechanism 2 includes a support platform 21 fixedly arranged on the upper side of the processing platform 1, a control component 23 and a conveying component 22 are arranged on the front and rear sides of the upper side of the support platform 21, and a cutting component 24 is arranged on the front side of the control component 23.

[0032] See also Figure 1 and Figure 2The conveying assembly 22 includes a rotating frame 221 which is symmetrically fixed on the upper side of the support platform 21, and a V-shaped wheel 222 is arranged to rotate together between the symmetrical rotating frames 221. A motor 223 whose output end is fixedly connected to the left end of the V-shaped wheel 222 is fixedly arranged on the left side of the left rotating frame 221.

[0033] See also Figure 1 and Figure 2 The control component 23 includes a control console 231 fixedly arranged on the upper side of the support platform 21, and a rotating chuck 232 is rotatably mounted on the control console 231. A through groove running through the front and back is opened on the rotating chuck 232, and a plurality of pneumatic clamps 233 are evenly installed on the front side of the rotating chuck 232 in a circumferential direction.

[0034] See also Figure 1 and Figure 2 The cutting assembly 24 includes a guide rail 241 fixedly arranged on the front side of the console 231 through a connecting plate and located above the rotating chuck 232. An electric slider 242 that moves forward and backward is slidably arranged on the guide rail 241. An L-shaped connecting plate is fixedly arranged on the lower side of the electric slider 242. A guide rail 243 is fixedly arranged on the front side of the vertical section of the L-shaped connecting plate. An electric slider 244 that moves up and down is slidably arranged on the guide rail 243. A laser cutting knife 245 is fixedly arranged on the front side of the electric slider 244.

[0035] When a pipe of a specific length with symmetrical arc-shaped ports at both ends is to be cut from the reinforced pipe, the pipe passing through the through slot is first clamped and fixed by the pneumatic clamp 233, and then the laser cutting knife 245 is driven by the electric slider 244 to move downward along the guide rail 243 until the output end of the laser cutting knife 245 is close to the outer surface of the front end of the pipe to be cut, and then the pipe is driven to rotate one circle by the rotating chuck 232, and at the same time, the laser cutting knife 245 is synchronously moved back and forth along the outer surface of the end of the pipe to cut, so that a specific arc-shaped port is first cut at the front end of the pipe, and then the pneumatic clamp 233 is loosened to a certain extent to clamp the pipe, and the V-shaped wheel 222 is driven by the motor 223 to rotate in a directional manner, so that the V-shaped wheel 222 stably transports the pipe forward until the front end of the pipe The specific arc-shaped port is docked and positioned with the material guide mechanism 3, at which time the conveying is stopped and the pipe is clamped and fixed again by the pneumatic clamp 233, and then the above-mentioned cutting operation is repeated and the moving trajectory of the laser cutting knife 245 is adjusted accordingly, so as to cut out an arc-shaped port symmetrically distributed front and back with the front end arc-shaped port at the corresponding position on the pipe, thereby cutting a pipe fitting of a specific length with symmetrical arc-shaped ports at both ends from the pipe, and at the same time, the front end of the remaining pipe fitting is also cut into an arc-shaped port with the same size and vertical distribution as the rear end arc-shaped port of the pipe fitting, and finally the remaining pipe fitting is driven to rotate ninety degrees by the rotating chuck 232 to ensure that the arc-shaped port at the front end of the next pipe fitting can also be docked and positioned with the material guide mechanism 3, and at this time, the rear end of the next pipe fitting can be directly arc-cut according to the above-mentioned cutting operation method.

[0036] See also Figure 3 The material guiding mechanism 3 includes a bottom plate 31 fixedly arranged on the upper side of the processing table 1, a lifting assembly 32 is arranged on the upper side of the bottom plate 31, and a supporting assembly 33, a limiting assembly 34 and a tightening assembly 35 are arranged on the lifting assembly 32.

[0037] See also Figure 3 and Figure 4 The lifting assembly 32 includes a guide rail 321 symmetrically fixedly arranged on the upper side of the bottom plate 31, an electric slider 322 that moves up and down is slidably arranged on the guide rail 321, a lifting frame 323 is fixedly arranged on the left side of the electric slider 322 symmetrically arranged front and back, a pneumatic cylinder 324 with a telescopic end passing through the lifting frame 323 left and right is fixedly arranged on the right side of the lifting frame 323, a connecting platform 325 that moves left and right is fixedly arranged on the telescopic end of the pneumatic cylinder 324, and a guide rod slidably connected to the lifting frame 323 is fixedly arranged on the right side of the connecting platform 325 symmetrically arranged front and back.

[0038] See also Figure 3 , Figure 4 and Figure 7The supporting assembly 33 includes an L-shaped connecting frame 331 which is symmetrically fixed on the upper side of the lifting frame 323. The left end of the horizontal section of the L-shaped connecting frame 331 is fixed with an L-shaped support plate 332 located below the laser cutting knife 245. The left end of the horizontal section of the L-shaped support plate 332 is elastically rotated with a rotating plate 333 through a torsion spring shaft.

[0039] See also Figure 4 , Figure 5 and Figure 6 The limiting assembly 34 includes a fixing platform 341 fixedly arranged at the front end of the connecting platform 325, a U-shaped groove 342 which runs through the front and back is opened on the left side of the fixing platform 341, a limiting clamping column 343 whose rear side is an arc surface and is located above the U-shaped groove 342 is arranged on the rear side of the fixing platform 341 through a rotation of a rotating shaft 1, a positioning rotating plate 344 is fixedly arranged at the rear end of the rotating shaft 1, a clamping groove 345 is opened on the upper side of the positioning rotating plate 344, a spring rod 1 is elastically slidably arranged on the rear side of the fixing platform 341 and above the positioning rotating plate 344 through a support 1, and a clamping block 346 which moves up and down and is positioned and clamped with the clamping groove 345 is fixedly arranged at the lower end of the spring rod 1.

[0040] The tube with a specific arc-shaped port cut out at the front end is conveyed forward by the V-wheel 222 until the arc-shaped port at the front end of the tube is stably aligned with the arc surface on the rear side of the limiting clamping column 343. When the tube rotates one circle in a directional manner with the rotating chuck 232, the limiting clamping column 343 will rotate one circle synchronously driven by the corresponding arc-shaped port, and the positioning rotating plate 344 and the clamping groove 345 on the positioning rotating plate 344 will also rotate one circle synchronously. When the clamping groove 345 rotates one circle to reset, the clamping block 346 is driven by the spring rod 1 to re-clamp downward into the clamping groove 345 to ensure that the limiting clamping column 343 and the tube can be stably reset to the initial state after rotating one circle, so that the arc surface on the limiting clamping column 343 can subsequently continue to stably dock and position with the arc-shaped port at the front end of the tube.

[0041] When the reinforcement pipe fittings with symmetrical arc-shaped ports at both ends are cut from the pipe, the reinforcement pipe fittings are supported by the horizontal section of the L-shaped support plate 332 below, and the reinforcement pipe fittings will not loosen or rotate left or right because the arc-shaped ports at the front ends are connected with the arc surfaces on the limit clamping column 343. At this time, the L-shaped connecting frame 331 and the pneumatic cylinder 324 on the lifting frame 323 are driven downward by the electric slider 322 to move a specific distance, and the L-shaped support plate 332 then synchronously drives the supported reinforcement pipe fitting to move downward. At the same time, the pneumatic cylinder 324 also drives the fixed platform 341 to move downward synchronously through the connecting platform 325, and the fixed platform 341 then drives the limit clamping column 343 and the reinforcement pipe fitting to move downward synchronously, thereby ensuring that the limit clamping column 343 can always limit the front end of the pipe fitting during the downward movement.

[0042] See also Figure 2 , Figure 3 and Figure 6 The clamping assembly 35 includes an L-shaped limit plate 351 fixedly arranged on the front side of the console 231 through a connecting plate 2 located below the rotating chuck, wherein the lower end of the vertical section of the L-shaped limit plate 351 is an inclined surface, and the rear end of the connecting platform 325 is symmetrically elastically slidably provided with a spring rod 2 through a support 2, and the front end of the symmetrical spring rod 2 is jointly fixedly provided with a return frame 352 that moves forward and backward, and a driven groove 353 that runs through the upper and lower parts and is transmission-coordinated with the vertical section of the L-shaped limit plate 351 is opened in the return frame 352, wherein the upper end of the driven groove 353 is an inclined surface, and a spring rod 3 is elastically slidably provided on the front side of the return frame 352 through a support 3, and a clamping column 354 that moves up and down and is located below the horizontal section of the L-shaped limit plate 351 is fixedly provided on the upper end of the spring rod 3, and a ball is rollingly provided on the upper end surface of the clamping column 354.

[0043] When the inclined surface at the lower end of the vertical section of the L-shaped limiting plate 351 contacts and cooperates with the inclined surface at the upper end of the driven groove 353, under the action of the spring rod 2, the return frame 352 will drive the clamping column 354 to move forward step by step until the limiting column 343 and the cutting reinforcement pipe are synchronously moved downward. The reinforcing pipe moves to the bottom, at which time the return frame 352 is just separated from the vertical section of the L-shaped limit plate 351. At the same time, if the horizontal inclination deformation of the reinforcing pipe is within the allowable error range, the clamping column 354 is just docked and clamped into the arc port at the rear end of the reinforcing pipe, so that the reinforcing pipe is stably limited front and back by the limiting clamping column 343 and the clamping clamping column 354. The above-mentioned operation method can not only support the cut reinforcing pipe, but also simulate the alignment and clamping of the two ends of the reinforcing pipe with the U-shaped frame to apply stable limitations to the arc ports at both ends of the reinforcing pipe, thereby not only avoiding the deformation of the reinforcing pipe due to falling and collision, but also automatically inspecting and identifying the reinforcing pipe whose horizontal inclination bending deformation exceeds the allowable error range.

[0044] See also Figure 3 and Figure 7 The screening mechanism 4 includes a material collecting table 41 fixedly arranged on the upper side of the processing table 1 through front and rear symmetrical pillars, and a screening component 42 and a supporting component 43 are arranged on the material collecting table 41.

[0045] See also Figure 3 and Figure 7The screening assembly 42 includes an L-shaped screening plate 421 fixedly arranged on the right side of the material collection platform 41, and U-shaped connecting frames 422 are symmetrically fixedly arranged on the front and rear sides of the material collection platform 41. The upper ends of the front and rear symmetrical U-shaped connecting frames 422 are jointly fixedly arranged with a horizontal screening plate 423 located above the L-shaped screening plate 421, and a separation protrusion 424 with an inclined surface on the right side is fixedly arranged on the rear side of the horizontal screening plate 423.

[0046] See also Figure 6 and Figure 7 The support assembly 43 includes a spring rod four which is elastically slidably arranged on the lower side of the collecting platform 41 through a support four which is symmetrical in front and back. A fixed plate 431 which moves left and right and is located on the right side of the L-shaped screening plate 421 is fixedly arranged at the right end of the spring rod four. A support rod 432 which is located below the horizontal section of the L-shaped screening plate 421 is fixedly arranged at the upper ends of the front and back symmetrical fixed plates 431, wherein a driven rod 433 is fixedly arranged on the front side of the front fixed plate 431.

[0047] When the limit clamp 343 and the reinforcement pipe fitting move to the lowest position, the lower surface of the rotating plate 333 on the left side of the L-shaped support plate 332 can just fit on the upper side of the support rod 432 without rotating downward, and the U-shaped groove 342 on the left side of the fixed platform 341 is also just aligned with the driven rod 433, and at the same time, the reinforcement pipe fitting supported on the upper side of the L-shaped support plate 332 is also just aligned with the spacing space between the horizontal section of the L-shaped screening plate 421 and the horizontal screening plate 423.

[0048] The pneumatic cylinder 324 drives the connecting platform 325 to move to the left, and the connecting platform 325 then drives the reinforcement pipe to move to the left along the horizontal section of the L-shaped support plate 332 and the rotating plate 333 through the limiting clamping column 343 and the tightening clamping column 354, until the driven rod 433 is docked and inserted into the U-shaped groove 342 and is pushed to the left by the right end of the U-shaped groove 342, and the driven rod 433 then drives the support rod 432 and the spring rod 4 to move synchronously to the left through the front fixed plate 431, until the limiting clamping column 343 and the tightening clamping column 354 drive the reinforcement pipe to move to the left to the leftmost end of the rotating plate 333, at which time the support rod 432 also moves synchronously to the bottom of the horizontal section of the L-shaped screening plate 421 and no longer supports the lower side of the rotating plate 333.

[0049] As the pneumatic cylinder 324 is driven leftward continuously, if the vertical inclination deformation of the reinforced pipe fitting is outside the allowable error range, it will not be able to enter the interval space between the horizontal section of the L-shaped screening plate 421 and the horizontal screening plate 423, and the unqualified reinforced pipe fitting will be resisted by the horizontal section of the L-shaped screening plate 421 and the right end of the horizontal screening plate 423 and cannot continue to move to the left. The clamping column 354 that continues to move left is then driven by the pressure of the arc-shaped port at the rear end of the unqualified reinforced pipe fitting, driving the return frame 352 and the spring rod 2 to move backward to make way until they are separated from the rear end of the reinforced pipe fitting. At this time, the unqualified reinforced pipe fitting that has lost its stable limit will roll to the right under the action of its own weight to the rotating plate 333 that has lost the support of the support rod 432. The rotating plate 333 rotates downward under the pressure of the unqualified reinforced pipe fitting, so that the screened-out reinforced pipe fitting automatically completes the blanking. After blanking, the rotating plate 333 will rotate and reset under the action of the torsion spring shaft.

[0050] If the vertical inclination deformation of the reinforced pipe fitting is within the allowable error range, it will smoothly pass through the interval space between the horizontal section of the L-shaped screening plate 421 and the horizontal screening plate 423 and continue to move to the left. The clamping column 354 that drives the qualified reinforced pipe fitting to move left will drive the return frame 352 and the second spring rod to move backward under the pressure of the right side inclined surface of the separation protrusion 424 until they are separated from the rear end of the reinforced pipe fitting. At this time, the qualified reinforced pipe fitting is just above the inclined section of the L-shaped screening plate 421. The qualified reinforced pipe fitting that has lost its stable limit will roll stably along the inclined section of the L-shaped screening plate 421 under the action of its own weight and be discharged onto the collection table 41.

[0051] The above-mentioned operation method can not only realize automatic and accurate inspection and screening of reinforced pipes whose vertical bending deformation exceeds the allowable error range, but also can automatically guide and stably cut qualified reinforced pipes, thereby not only ensuring the stability of the cutting of reinforced pipes, but also ensuring the subsequent accurate alignment and welding of the reinforced pipes with the U-shaped handlebars, while also greatly reducing the operational burden of manual inspection and screening of unqualified processed pipes, thereby improving the overall processing efficiency of bicycle accessories.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pipe cutting device for processing bicycle accessories, used for arc cutting of reinforcement pipes of U-shaped handlebars, comprising a processing table, characterized in that: A material guiding mechanism and a cutting mechanism are arranged at the front and rear of the upper side of the processing table, and a screening mechanism is arranged at the upper side of the processing table and on the left side of the material guiding mechanism; The cutting mechanism comprises a support table fixedly arranged on the upper side of the processing table, a control component and a conveying component are arranged on the front and rear sides of the upper side of the support table, and a cutting component is arranged on the front side of the control component; The material guiding mechanism comprises a bottom plate fixedly arranged on the upper side of the processing table, a lifting assembly is arranged on the upper side of the bottom plate, and a supporting assembly, a limiting assembly and a tightening assembly are arranged on the lifting assembly; The screening mechanism comprises a material collecting table fixedly arranged on the upper side of the processing table by front and rear symmetrical pillars, and a screening component and a supporting component are arranged on the material collecting table.

2. The pipe cutting device for processing bicycle parts according to claim 1, characterized in that: The conveying assembly includes a rotating frame that is symmetrically fixed on the upper side of the support platform, and V-shaped wheels are arranged between the symmetrical rotating frames to rotate together. A motor with an output end fixedly connected to the left end of the V-shaped wheel is fixedly arranged on the left side of the left rotating frame.

3. The pipe cutting device for processing bicycle parts according to claim 1, characterized in that: The control assembly comprises a control console fixedly arranged on the upper side of the support platform, on which a rotary chuck is rotatably mounted, a through slot penetrating front and rear is provided on the rotary chuck, and a plurality of pneumatic clamps are evenly mounted on the front circumference of the rotary chuck.

4. The pipe cutting device for processing bicycle parts according to claim 3, characterized in that: The cutting assembly includes a guide rail 1 fixedly arranged on the front side of the console through a connecting plate 1 and located above the rotating chuck, an electric slider 1 that moves forward and backward is slidably arranged on the guide rail 1, an L-shaped connecting plate is fixedly arranged on the lower side of the electric slider 1, a guide rail 2 is fixedly arranged on the front side of the vertical section of the L-shaped connecting plate, an electric slider 2 that moves up and down is slidably arranged on the guide rail 2, and a laser cutting knife is fixedly arranged on the front side of the electric slider 2.

5. The pipe cutting device for processing bicycle parts according to claim 1, characterized in that: The lifting assembly includes three guide rails symmetrically fixedly arranged on the upper side of the bottom plate, three electric sliders that can move up and down are slidably arranged on the three guide rails, a lifting frame is fixedly arranged on the left side of the three electric sliders symmetrically arranged front and back, a pneumatic cylinder with a telescopic end that penetrates the lifting frame left and right is fixedly arranged on the right side of the lifting frame, a connecting platform that can move left and right is fixedly arranged on the telescopic end of the pneumatic cylinder, and a guide rod that is slidably connected to the lifting frame is fixedly arranged on the right side of the connecting platform symmetrically arranged front and back.

6. The pipe cutting device for processing bicycle parts according to claim 5, characterized in that: The supporting assembly includes an L-shaped connecting frame symmetrically fixed on the upper side of the lifting frame, an L-shaped support plate located below the laser cutting knife is fixedly arranged at the left end of the horizontal section of the L-shaped connecting frame, and a rotating plate is elastically rotated by a torsion spring rotating shaft at the left end of the horizontal section of the L-shaped support plate.

7. The pipe cutting device for processing bicycle parts according to claim 5, characterized in that: The limiting assembly includes a fixing platform fixedly arranged at the front end of the connecting platform, a U-shaped groove penetrating from front to back is provided on the left side of the fixing platform, a limiting clamping column with an arc surface on the rear side and located above the U-shaped groove is provided on the rear side of the fixing platform through rotation of a rotating shaft, a positioning rotating plate is fixedly arranged at the rear end of the rotating shaft, a clamping groove is provided on the upper side of the positioning rotating plate, a spring rod 1 is elastically slidably provided on the rear side of the fixing platform and above the positioning rotating plate through a support, and a clamping block is fixedly arranged on the lower end of the spring rod 1, which moves up and down and is positioned and clamped with the clamping groove.

8. The tube cutting device for processing bicycle parts according to claim 3, characterized in that: The clamping assembly includes an L-shaped limit plate fixedly arranged on the front side of the console through a connecting plate 2 located below the rotating chuck, wherein the lower end of the vertical section of the L-shaped limit plate is an inclined surface, and the rear end of the connecting platform is symmetrically and elastically slidably provided with a spring rod 2 through a support 2, and the front ends of the left-right symmetrical spring rods are jointly fixed with a return frame that moves forward and backward, and a driven groove that passes through the upper and lower parts and cooperates with the transmission of the vertical section of the L-shaped limit plate is opened in the return frame, and a spring rod 3 is elastically slidably provided on the front side of the return frame through a support 3, and a clamping column that moves up and down and is located below the horizontal section of the L-shaped limit plate is fixedly provided on the upper end of the spring rod 3, and a ball is rolled on the upper end surface of the clamping column.

9. The tube cutting device for processing bicycle parts according to claim 1, characterized in that: The screening assembly includes an L-shaped screening plate fixedly arranged on the right side of the material collection platform, U-shaped connecting frames are symmetrically fixedly arranged on the front and rear sides of the material collection platform, and a horizontal screening plate located above the L-shaped screening plate is commonly fixedly arranged on the upper ends of the front and rear symmetrical U-shaped connecting frames, and a separation protrusion with an inclined surface on the right side is fixedly arranged on the rear side of the horizontal screening plate.

10. The tube cutting device for processing bicycle parts according to claim 9, characterized in that: The support assembly includes a spring rod four which is symmetrically elastically slidably arranged on the lower side of the aggregate table through a support four, a fixed plate which moves left and right and is located on the right side of the L-shaped screening plate is fixedly arranged on the right end of the spring rod four, and a support rod located below the horizontal section of the L-shaped screening plate is fixedly arranged on the upper ends of the front-to-back symmetrical fixed plates, wherein a driven rod is fixedly arranged on the front side of the front fixed plate.

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