A bicycle tire building machine and a bicycle tire building method

Abstract

The present application relates to a kind of bicycle tire building machine and bicycle tire forming method, including rack, feeding assembly, obliquely arranged tread conveyor and forming assembly;Tread conveyor is equipped with mounting table, angle adjusting mechanism, lifting mechanism and liftable conveying assembly, and is equipped with cutting mechanism, centering mechanism, tread detection sensor and liftable press roll;Forming assembly includes expandable forming roller, first drive motor and diameter detection unit;Control unit is connected with the above sensor, mechanism and motor signal, and the single rotation amount of forming roller is regulated according to real-time diameter signal, and the forming cycle of automatic completion of centering positioning, pressing, fixed-length output and cutting, transfer and reset is completed.The present application solves the technical problems of insufficient centering positioning accuracy in the tread forming process of prior art, and the fixed-length error caused by the difficulty of dynamic compensation of forming length with forming roller diameter change.

Description

Technical Field

[0001] This invention relates to the field of tire manufacturing technology, and in particular to a bicycle tire forming machine and a bicycle tire forming method. Background Technology

[0002] As a crucial component of bicycles, the quality and performance of bicycle tires directly affect the overall stability and safety of the vehicle. In the traditional bicycle tire manufacturing process, tread material is typically supplied in long strips, and the forming stage involves multiple steps, including conveying, centering, length setting, pressing, cutting, and positioning. To improve production efficiency and product consistency, automated forming often requires the use of mechanical equipment.

[0003] Currently, there are already some degree of automation in tire tread forming equipment on the market, which typically possess basic functions such as a conveying platform, forming molds, and a drive unit. However, the following technical problems still commonly exist in existing technologies: Insufficient positioning accuracy: Before pressing the tread onto the forming roller, the tread position is calibrated manually or by a simple centering device, which can easily lead to inaccurate forming or material waste.

[0004] Inaccurate forming length control: Some equipment uses a preset length setting method, which cannot dynamically compensate for changes in the real-time diameter of the forming roller, resulting in a large error in the length of the finished product.

[0005] Unstable structure or difficulty in adjustment: such as the inability to adjust the forming angle, or the difficulty in raising, lowering or disassembling the conveying components, which reduces the applicability and ease of maintenance of the equipment.

[0006] Insufficient safety protection: The cutting mechanism is exposed and lacks effective protective structure, posing an operational risk.

[0007] Therefore, there is an urgent need to provide a bicycle tire forming equipment with a reasonable structure, high degree of automation, strong control precision, and good operability and safety to solve the above-mentioned problems in the existing technology. Summary of the Invention

[0008] To address the shortcomings of existing technologies, the present invention aims to provide a bicycle tire forming machine and a bicycle tire forming method, wherein the forming machine has a reasonable structure, a high degree of automation, strong control precision, and good operability and safety.

[0009] To achieve the above objectives, the present invention adopts the following technical solution: A bicycle tire forming machine includes a frame, a feeding assembly, a tread conveying device, a forming assembly, and a control unit. The feeding assembly is fixed to the top of the frame and is used to convey the tire tread. The tread conveying device is located at the end of the feeding assembly and is obliquely downward. The tread conveying device includes a mounting platform with an angle adjustment mechanism at its bottom for connecting the mounting platform to the frame and adjusting and locking its oblique angle. A lifting mechanism extending obliquely along the mounting platform is provided, and a conveying assembly is mounted on the lifting mechanism. The conveying assembly is configured to move up and down along the lifting mechanism. A centering mechanism, a cutting mechanism upstream of the centering mechanism, and a tread detection sensor downstream of the centering mechanism are provided on the mounting platform. The tread detection sensor is vertically positioned relative to the middle part of the centering mechanism to detect the tire tread. Further details are provided on the mounting platform downstream of the tread detection sensor. The device is equipped with a pressure roller and a drive unit, which is configured to drive the pressure roller to move up and down. The forming component includes a forming roller located obliquely below the tread conveying device. The forming roller has an expandable and contractible structure and is connected to a detection unit for detecting its diameter. It is driven by a first drive motor. The control unit is signal-connected to the tread detection sensor, the centering mechanism, the drive unit, the cutting mechanism, the lifting drive unit of the conveying component, the first drive motor, and the detection unit. The control unit is configured to: adjust the single rotation amount of the first drive motor according to the diameter signal of the detection unit, and be able to automatically execute a complete forming cycle. The forming cycle includes at least a sequentially controlled tread centering and positioning stage, a conveying component lowering and tread pressing stage, a fixed-length output and cutting stage based on the real-time diameter, and a tread segment transfer and reset stage for each actuator.

[0010] Furthermore, the feeding assembly includes at least one guide roller disposed at its input starting end, and a roller conveyor downstream of the guide roller, which is composed of a plurality of conveying rollers arranged in a row; the guide roller is used to guide the tire tread into the roller conveyor.

[0011] Furthermore, the frame includes a mounting plate, which is located adjacent to the tread conveying device; the angle adjustment mechanism includes a fixed support rod and an adjustment locking rod that are laterally fixed to the bottom of the mounting platform; the free end of the fixed support rod is rotatably connected to the mounting plate; the free end of the adjustment locking rod passes through an arc-shaped adjustment groove provided on the mounting plate and can move and lock along the arc-shaped adjustment groove, which is arranged with the rotation axis of the fixed support rod as the center.

[0012] Furthermore, the lifting mechanism includes a guide rail extending obliquely along the mounting platform; the conveying assembly includes a chassis, a conveying roller, and a second drive motor, the chassis is mounted on the guide rail and can slide along it, the conveying roller is rotatably mounted on the top of the chassis, and the second drive motor is mounted on the top of the chassis and located at one end of the conveying roller for driving the conveying roller to rotate; the control unit is configured to, after the tread detection sensor detects the tread, delay for a preset time to control the second drive motor to stop the rotation of the conveying roller.

[0013] Furthermore, the conveying assembly also includes a pair of lateral support beams and multiple support units; the pair of lateral support beams are arranged opposite each other and fixed on both sides of the top of the chassis; multiple support units are spaced apart between the pair of lateral support beams along the conveying direction; each support unit includes an adjusting rod and a support member, the adjusting rod is arranged perpendicular to the conveying direction, and the support member is rotatably sleeved on the adjusting rod; the support member is circumferentially provided with a number of rolling elements arranged along its axial direction, the rolling elements protruding from the surface of the support member, which are used to support the tire tread while allowing the tire tread to adjust its position perpendicular to the conveying direction.

[0014] Furthermore, the conveying assembly also includes a limiting structure, which includes: two limiting brackets, respectively disposed on the left and right sides of the tread conveying path and arranged symmetrically, for lateral limiting of the tread; multiple limiting supports, laterally connected between a pair of lateral support beams and respectively disposed between adjacent support units, for supporting the limiting brackets; several limiting rollers on the limiting brackets for reducing friction when laterally guiding the tread; multiple clearance notches on the limiting brackets, the positions of which correspond to the support units; at least one of the two limiting brackets is an adjustable structure, which is connected to an adjusting component through a screw mechanism for adjusting the lateral position of the limiting bracket.

[0015] Furthermore, the cutting mechanism includes a support platform, a third drive motor, a cutter, and a protective structure; the two ends of the support platform are fixedly installed on the lateral support beams of the conveying assembly, and the top of the support platform is an inclined plane; the third drive motor is fixedly installed on the inclined top of the support platform; the cutter is connected to the third drive motor through a screw structure, and the third drive motor is configured to drive the cutter to reciprocate along the screw direction; the protective structure is a cage-like cover with multiple through holes, which covers at least part of the support platform, the third drive motor, and the cutter, and has an opening for the tire tread to enter and exit.

[0016] Furthermore, the drive device includes a fourth drive motor, a rocker arm mechanism, and a linkage mechanism; the fourth drive motor is fixedly mounted on a lateral support beam on one side; the rocker arm mechanism includes a pair of vertically arranged support arms and a rotating shaft, the pair of support arms being fixed to the ends of the two lateral support beams along the conveying direction, and the rotating shaft being rotatably supported between the pair of support arms; the pressure roller is hinged to the rotating shaft via at least one cantilever linkage; the linkage mechanism is connected between the output end of the fourth drive motor and the rotating shaft, and is used to convert the rotational motion of the fourth drive motor into the swinging motion of the rotating shaft, thereby driving the pressure roller to rise and fall.

[0017] Furthermore, the forming assembly also includes a housing, a cantilever beam, a support frame, a positioning assembly, and a bottom pressure roller; the top of the housing is provided with a laterally extending cantilever beam; a first drive motor is located inside the housing, and its output shaft is connected to the forming roller; the support frame is located at the front end of the housing and on the left and right sides of the forming roller; the positioning assembly includes multiple telescopic actuators, which are respectively located on the cantilever beam and the two support frames and face the surface of the forming roller at different angles. Each telescopic actuator drives a positioning element to move in a straight line. The positioning element has two opposing clamping plates for clamping and positioning the tire tread from both sides; the bottom pressure roller is vertically and vertically located at the bottom of the housing for pressing the tire tread on the forming roller from below.

[0018] Furthermore, a bicycle tire forming method employs the bicycle tire forming machine as described in claim 1, and automatically executes the forming cycle in the following sequence: The forming cycle includes: S1 Tire Surface Centering and Positioning: Controlling the feeding assembly and conveying assembly to convey the tire surfacing; when the tire surfacing detection sensor detects the tire surfacing, triggering the centering mechanism to center and correct the tire surfacing; after centering is completed, controlling the conveying to stop; S2 Pressing and Fixed-Length Output: Controlling the conveying assembly to move downward and controlling the drive device to drive the pressure roller downward to press the tire surfacing onto the forming roller; calculating and controlling the first drive motor to rotate a first preset angle based on the real-time diameter of the forming roller obtained by the detection unit, so as to output a tire surfacing of constant length; S3 Cutting and Transfer: Controlling the cutting mechanism to cut the tire surfacing; controlling the first drive motor to rotate a second preset angle to bring the cut tire surfacing segment to the surface of the forming roller; S4 Reset: Controlling the drive device to lift the pressure roller and controlling the centering mechanism to reset; controlling the drive device to drive the pressure roller downward again, controlling the first drive motor to reverse a third preset angle; then controlling the drive device to lift the pressure roller and controlling the conveying assembly to rise and reset.

[0019] The aforementioned bicycle tire forming machine and method, by setting an obliquely downward tread conveying device at the end of the feeding end, and sequentially arranging an alignment mechanism, a tread detection sensor, a pressure roller and its lifting drive device, and a cutting mechanism on the mounting platform, enables automatic detection, alignment correction, and stable positioning of the tread before it is pressed onto the forming roller. Simultaneously, the forming component uses an expandable forming roller and is equipped with a detection unit for detecting its diameter. The control unit adjusts the single rotation amount of the first drive motor based on the real-time diameter signal from the detection unit, thereby achieving dynamic fixed-length output and precise cutting of the tread even when the forming roller diameter changes. Furthermore, the tread conveying device is equipped with an angle adjustment mechanism to adjust and lock the forming angle. The conveying component can switch between upper and lower positions along the oblique lifting mechanism for easy pressing and resetting. The cutting mechanism, in conjunction with a protective structure, reduces exposure risk, thus solving the problems of insufficient tread positioning accuracy, inaccurate forming length control, inconvenient equipment structure adjustment and maintenance, and insufficient safety protection in existing technologies. Attached Figure Description

[0020] Figure 1 This is a front view of the bicycle tire forming machine provided according to the present invention; Figure 2 This is a three-dimensional view of the bicycle tire forming machine provided according to the present invention; Figure 3 This is a schematic diagram of the tire tread conveying device without a protective structure provided according to the present invention. Figure 4 This is a top view of the tire tread conveying device provided according to the present invention; Figure 5 This is a schematic diagram of the tread conveying device provided according to the present invention; Figure 6 This is a schematic diagram of the structure of the molding component provided according to the present invention. Detailed Implementation

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present invention.

[0022] like Figures 1 to 6 As shown, this application provides a bicycle tire forming machine, including a frame 1, a feeding assembly 2, a tread conveying device 3, and a forming assembly 4.

[0023] Specifically, the feeding assembly 2 is fixed to the top of the frame 1 and is used to convey the tire tread.

[0024] The tread conveying device 3 is located at the end of the feeding assembly 2 and is obliquely downward. The tread conveying device 3 includes a mounting platform 31, and an angle adjustment mechanism 32 is provided at the bottom of the mounting platform 31 to connect the mounting platform 31 to the frame 1 and adjust and lock its oblique angle. The mounting platform 31 is provided with a lifting mechanism 33 extending obliquely thereon. The lifting mechanism 33 is provided with a conveying assembly 34, which is configured to move up and down along the lifting mechanism 33. The mounting platform 31 is provided with a centering mechanism 35, a cutting mechanism 36 located upstream of the centering mechanism 35, and a tread detection sensor located downstream of the centering mechanism 35. The tread detection sensor is vertically arranged relative to the middle part of the centering mechanism 35 to detect the tread. The mounting platform 31 downstream of the tread detection sensor is also provided with a pressure roller 37 and a drive device 38, which is configured to drive the pressure roller 37 to move up and down.

[0025] The forming component 4 includes a forming roller 41 disposed obliquely below the tread conveying device 3. The forming roller 41 has an expandable and contractible structure. The forming roller 41 is connected to a detection unit for detecting its diameter and is driven by a first drive motor. The control unit is signal-connected to the tread detection sensor, the centering mechanism 35, the drive device 38, the cutting mechanism 36, the lifting drive device 38 of the conveying component 34, the first drive motor, and the detection unit. The control unit is configured to: adjust the single rotation amount of the first drive motor according to the diameter signal of the detection unit, and be able to automatically execute the complete forming cycle. The forming cycle includes at least a sequentially controlled tread centering and positioning stage, a conveying component 34 lowering and tread pressing stage, a fixed-length output and cutting stage based on the real-time diameter, and a tread segment transfer and reset stage of each actuator.

[0026] In the above embodiment, the frame 1 is used to support each functional module, and the feeding assembly 2 is installed on the top of the frame 1, so that the tread enters from the upstream and is stably guided into the tread conveying device 3 under the coordination of gravity and conveying direction. The tread conveying device 3 is arranged obliquely downwards, and the mounting platform 31 is connected to the frame 1 through the angle adjustment mechanism 32. The angle adjustment mechanism 32 is used to change the inclination angle of the mounting platform 31 and lock it during installation, model change or maintenance, so that the tread can be smoothly guided in the oblique conveying process while avoiding space with the forming roller 41 below. In the production preparation stage, the mounting platform 31 can be adjusted to the target inclination angle (for example, an angle in the range of 20° to 45°) and locked by the angle adjustment mechanism 32 to ensure that the centering, detection and pressing positions are relatively stable.

[0027] A lifting mechanism 33 extends obliquely along the mounting platform 31. The lifting mechanism 33 can be a combination of a linear guide pair and an actuator (e.g., a linear guide rail with a lead screw / synchronous belt / cylinder / electric cylinder, etc.) to constrain the conveying assembly 34 to move up and down along the oblique trajectory of the mounting platform 31. The conveying assembly 34 is located in the tread conveying path and undertakes the supporting function of tread conveying and pressing. When it is necessary to establish pressing contact with the forming roller 41, the control unit drives the lifting mechanism 33 to move the conveying assembly 34 obliquely downward, so that the tread is closer to or in contact with the outer peripheral surface of the forming roller 41, providing a geometric basis for subsequent pressing by the pressure roller 37. When it is necessary to release or reset, the conveying assembly 34 moves back to the standby height in the opposite direction.

[0028] In the conveying path, the centering mechanism 35 is mounted on the mounting platform 31, the cutting mechanism 36 is arranged upstream of the centering mechanism 35, and the tread detection sensor is arranged downstream of the centering mechanism 35 and perpendicular to the middle part of the centering mechanism 35. The centering mechanism 35 can be a linear motor structure that presses from both sides towards the center. This arrangement allows the tire tread to first pass through the area of ​​the cutting mechanism 36, then enter the centering mechanism 35 for lateral correction, and then the tread detection sensor detects the position / presence of the tire tread in the vertical direction, thus using the "tread position after correction" as the detection reference. The tread detection sensor can be any of photoelectric, laser displacement, proximity switch, or visual triggering structures, as long as it can output a stable trigger signal when the tire tread reaches the detection position. Its vertical detection setting helps reduce the impact of tire surface texture and color differences on detection stability and facilitates adjustment of the detection height to adapt to different thicknesses or tire tread specifications.

[0029] The pressure roller 37 is positioned downstream of the tread detection sensor, and the drive unit 38 is used to drive the pressure roller 37 to rise and fall. During the pressing stage, the pressure roller 37 applies normal pressure to the tread, ensuring reliable contact between the tread and the outer circumference of the forming roller 41, thus avoiding length errors and poor contact caused by springback or slippage. The drive unit 38 can be a servo motor with connecting rods / cams, cylinders, hydraulic cylinders, or electric push rods, as long as it can realize the pressing, holding, and lifting actions of the pressure roller 37 under the command of the control unit, and achieve consistent pressing through stroke / pressure feedback.

[0030] The forming component 4 is located diagonally below the tread conveying device 3. The forming roller 41 is an expandable and contractible structure, and its outer diameter can be changed through the expansion and contraction mechanism to adapt to different specifications of tire bead or different forming size requirements. The forming roller 41 is driven to rotate by a first drive motor, and is simultaneously connected to a detection unit for detecting the diameter of the forming roller 41. The detection unit can employ displacement detection linked to the expansion and contraction mechanism, contact / non-contact measurement to directly measure the outer diameter, or indirect measurement based on the displacement and geometric conversion of the expansion and contraction driver. The control unit receives the real-time diameter signal D output by the detection unit and adjusts the single rotation amount of the first drive motor accordingly to achieve the goal of "outputting a constant length tread even under diameter changes".

[0031] In the automated forming cycle, the control unit executes and achieves closed-loop coordination in the following order of at least the following stages: Tire tread alignment and positioning stage: The control feeding component 2 and the conveying component 34 convey the tire tread; when the tire tread detection sensor detects that the tire tread has reached the detection position, the control unit triggers the alignment mechanism 35 to perform lateral correction, so that the center line of the tire tread is aligned with the reference center of the equipment; after alignment is completed, the control unit issues a stop / hold command, so that the tire tread stays stably at the reference position of the alignment mechanism 35, providing a consistent starting position for subsequent pressing.

[0032] During the lowering and tread pressing stage of the conveying assembly 34: the control unit drives the lifting mechanism 33 to lower the conveying assembly 34, bringing the tread closer to the forming roller 41; then the control drive device 38 presses down the pressure roller 37, pressing the tread onto the outer circumference of the forming roller 41. During the pressing process, a holding time and a holding displacement window can be set to eliminate material elastic rebound and surface air entrainment.

[0033] Fixed-length output and cutting-off stage based on real-time diameter: The control unit reads the real-time diameter D of the detection unit and calculates the required rotation angle θ of the first drive motor in this cycle according to the target output length L. An exemplary calculation relationship can be: Assuming that the linear velocity of the outer circumference of the forming roller and the slippage of the tire tread are negligible, the single output length and the rotation angle of the forming roller satisfy: θ=360°×L / (π×D).

[0034] If we consider the micro-slippage or springback after the material is pressed, we can introduce a compensation coefficient k (for example, select one in the range of 0.98 to 1.02) to get: θ = 360° × k × L / (π × D).

[0035] The control unit uses the calculated θ as a single rotation command for the first drive motor, causing the forming roller 41 to rotate and pull the tread to output the target length; after reaching the target rotation, the control unit controls the cutting mechanism 36 to cut the tread into tread segments.

[0036] Tread segment transfer and reset of each actuator stage: After cutting, the control unit continues to control the first drive motor to rotate, so that the cut tread segment is transferred to the designated bonding area of ​​the forming roller 41; then the pressure roller 37 is raised, the centering mechanism 35 is reset, and the conveying component 34 is raised and reset in sequence. The forming roller 41 can be retracted or positioned to zero as needed to return the equipment to the initial state of the next cycle.

[0037] Through the above logic, the equipment combines "centering and positioning - pressing - outputting according to real-time diameter and length - cutting - transfer and reset" into a closed-loop forming cycle that can be automatically and repeatedly executed. This not only adapts to the diameter changes caused by the expansion and contraction of the forming roller 41, but also ensures that the length of the forming section is consistent each time.

[0038] By setting the above parameters, cumulative errors caused by using fixed perimeter parameters can be avoided, molding consistency can be improved, scrap and rework can be reduced, and the control unit can automatically execute the complete molding cycle, reducing the intensity of manual intervention and operational differences.

[0039] More specifically, the feeding assembly 2 includes at least one guide roller 21 disposed at its input starting end, and a roller conveyor downstream of the guide roller 21, which is composed of a plurality of conveying rollers 22 arranged in a roller conveyor; the guide roller 21 is used to guide the tire tread into the roller conveyor. By providing multi-point support and continuous conveying of the tire tread through the roller conveyor composed of a plurality of conveying rollers 22, the conveying friction and material tensile stress can be reduced, the probability of tire tread surface scratches, edge curling and wrinkles can be reduced, thereby improving the stability of feeding and the reliability of subsequent centering and positioning, and improving the consistency of the overall forming cycle.

[0040] like Figures 1 to 3 As shown, the frame 1 includes a mounting plate 11, which is located adjacent to the tire conveying device 3. The angle adjustment mechanism 32 includes a fixed support rod 321 and an adjustment locking rod 322, which are laterally fixed to the bottom of the mounting platform 31. The free end of the fixed support rod 321 is rotatably connected to the mounting plate 11. The free end of the adjustment locking rod 322 passes through the arc-shaped adjustment groove 111 provided on the mounting plate 11 and can move and lock along the arc-shaped adjustment groove 111. The arc-shaped adjustment groove 111 is set with the rotation axis of the fixed support rod 321 as the center. By setting the mounting plate 11 on the frame 1 and arranging the angle adjustment mechanism 32 of the mounting platform 31 as a combination of "rotatably connected fixed support rod 321 + sliding and locking adjustment locking rod 322 along the arc-shaped adjustment groove 111", the tilt angle can be quickly adjusted without disassembling the mounting platform 31. Moreover, the arc-shaped adjustment groove 111 forms a geometrically consistent adjustment trajectory with the rotation axis as the center, making the tilt angle change process smooth and the positioning intuitive. After locking, the force path of the mounting platform 31 is clear, which can effectively suppress the angle drift caused by running vibration, improve the stability of the oblique angle of the tread conveying device 3 and the consistency of the changeover, thereby improving the repeatability accuracy of the subsequent alignment, inspection and pressing stages, and reducing the adjustment time and human error.

[0041] like Figures 3 to 5As shown, the lifting mechanism 33 includes a guide rail extending obliquely along the mounting platform 31; the conveying assembly 34 includes a chassis 341, a conveying roller 342, and a second drive motor 343. The chassis 341 is mounted on the guide rail and can slide along it. The conveying roller 342 is rotatably mounted on the top of the chassis 341. The second drive motor 343 is mounted on the top of the chassis 341 and located at one end of the conveying roller 342, for driving the conveying roller 342 to rotate. The control unit is configured to, after the tread detection sensor detects the tread, delay the second drive motor 343 for a preset time to stop the rotation of the conveying roller 342. By forming the lifting mechanism 33 by obliquely mounting the guide rail on the mounting platform 31, the lifting trajectory of the conveying assembly 34 is more consistent with the tread conveying direction, reducing lateral movement and shaking during lifting and improving alignment stability before pressing. The conveying assembly 34 adopts an integrated structure of "chassis 341 + conveying roller 342 + second drive motor 343", which facilitates modular installation and maintenance and provides stable and controllable conveying driving force. The control unit performs a delayed stop based on the tread detection sensor signal, which can achieve repeatable docking and positioning of the tread without adding an additional positioning mechanism. This reduces the stopping deviation caused by sensor installation position error, tread end shape difference or inertial slippage, and improves the initial consistency of subsequent pressing by the pressure roller 37 and fixed-length output by the forming roller 41, thereby improving the forming length accuracy and cycle stability.

[0042] The conveying assembly 34 also includes a pair of lateral support beams 344 and multiple support units 345. The pair of lateral support beams 344 are arranged opposite each other and fixed to the top sides of the chassis 341. The multiple support units 345 are spaced apart between the pair of lateral support beams 344 along the conveying direction. Each support unit 345 includes an adjusting rod 3451 and a support member 3452. The adjusting rod 3451 is arranged perpendicular to the conveying direction, and the support member 3452 is rotatably sleeved on the adjusting rod 3451. The support member 3452 is circumferentially provided with several rolling elements 3453 arranged axially thereon. The rolling elements 3453 protrude from the surface of the support member 3452, which are used to support the tire tread while allowing the tire tread to adjust its position perpendicular to the conveying direction. By setting a pair of lateral support beams 344 to form a stable left-right structural support, and arranging multiple support units 345 between them along the conveying direction, the tire tread can be distributedly supported throughout the conveying area, reducing the suspended span and reducing conveying instability caused by sagging and adhesion of rubber. The support member 3452 is rotatably sleeved on the adjusting rod 3451, allowing the tire tread to be conveyed through rolling contact, significantly reducing frictional resistance and the risk of surface damage. Rolling elements 3453, partially protruding from the outer periphery of the support member 3452, provide lateral adjustability to the tire tread while it is being supported. This, combined with the centering mechanism 35, enables a smoother correction process, reducing tensile stress and the probability of wrinkles during lateral adjustment, thereby improving tire tread centering accuracy, conveying smoothness, and consistency of subsequent pressing and positioning.

[0043] The conveying assembly 34 also includes a limiting structure 346, which includes: two limiting brackets 3461, which are respectively and symmetrically arranged on the left and right sides of the tread conveying path for lateral limiting of the tread; multiple limiting supports 3462, which are laterally connected between a pair of lateral support beams 344 and respectively arranged between adjacent support units 345 for supporting the limiting brackets 3461; the limiting brackets 3461 are provided with a number of limiting rollers 3463 for reducing friction when laterally guiding the tread; the limiting brackets 3461 are provided with a number of clearance notches 3464, the positions of which correspond to the support units 345; at least one of the two limiting brackets 3461 is an adjustable structure, which is connected to an adjusting component 3465 through a screw mechanism for adjusting the lateral position of the limiting bracket 3461. By setting limiting structures 346 on both sides of the conveying path, stable lateral limiting and guidance can be provided for the tire tread, suppressing lateral drift during the conveying process and improving the initial position consistency of the tire tread when entering the centering mechanism 35, the detection position, and the pressing area. The limiting rollers 3463 reduce lateral guiding friction through rolling contact, which can reduce tire tread edge wear, scratches, and rubber accumulation, and improve conveying stability. The avoidance notch 3464 corresponds to the support unit 345, so that the limiting bracket 3461 can still avoid interference with the support unit 345 when it is close to the tire tread, ensuring a compact structure and smooth passage. At least one limiting bracket 3461 can be laterally adjustable through a screw mechanism and adjusting component 3465, enabling the equipment to quickly adapt to tire treads of different widths and reproduce adjustment dimensions, reducing changeover time and improving versatility and production continuity.

[0044] The cutting mechanism 36 includes a support platform 361, a third drive motor 362, a cutter 363, and a protective structure 364. The support platform 361 is fixedly mounted at both ends to the lateral support beams 344 of the conveying assembly 34, and its top is an inclined plane. The third drive motor 362 is fixedly mounted on the inclined top of the support platform 361. The cutter 363 is connected to the third drive motor 362 via a lead screw structure, and the third drive motor 362 is configured to drive the cutter 363 to reciprocate along the lead screw direction. The protective structure 364 is a cage-like cover with multiple through holes, covering at least a portion of the support platform 361, the third drive motor 362, and the cutter 363, and has an opening for the tire tread to enter and exit. The support platform 361 is fixed at both ends to the lateral support beams 344, stabilizing the relative relationship between the cutting mechanism 36 and the conveying path, reducing the risk of the cutting position drifting due to vibration or assembly errors. The support platform 361 is tilted at the top, which improves the stability of the tire tread in the cutting area and facilitates the entry of the cutter 363, reducing dragging, wrinkling, and burrs during the cutting process. The third drive motor 362, in conjunction with the lead screw structure, drives the cutter 363 to reciprocate, enabling controllable stroke and repeatable cutting positions, thus improving cutting accuracy and consistency. The protective structure 364 isolates the moving parts in the form of a cage-like enclosure, reducing the risk of accidental contact by operators and providing observation and heat dissipation through through holes, thereby improving the safety and ease of maintenance of the entire machine.

[0045] The drive unit 38 includes a fourth drive motor 381, a swing arm mechanism 382, ​​and a linkage mechanism 383. The fourth drive motor 381 is fixedly mounted on a lateral support beam 344 on one side. The swing arm mechanism 382 includes a pair of vertically arranged support arms and a rotating shaft. The pair of support arms are respectively fixed to the ends of the lateral support beams 344 along the conveying direction, and the rotating shaft is rotatably supported between the pair of support arms. The pressure roller 37 is hinged to the rotating shaft through at least one cantilever linkage 384. The linkage mechanism 383 is connected between the output end of the fourth drive motor 381 and the rotating shaft to convert the rotational motion of the fourth drive motor 381 into the swinging motion of the rotating shaft, thereby driving the pressure roller 37 to rise and fall. The fourth drive motor 381, together with the linkage mechanism 383 and the swing arm mechanism 382, ​​forms a transmission chain of "motor rotation - rotating shaft swing - pressure roller rising and falling", so that the rising and falling action of the pressure roller 37 can be automated and repeatable through motor control. The rotating shaft is supported on both sides by support arms and, in conjunction with the cantilever connecting rod 384, hinges the pressure roller 37. This improves the structural rigidity and motion stability of the pressing process, and reduces uneven pressing and length errors caused by pressure roller skew. The connecting rod mechanism 383 facilitates the rhythmic control of actions such as pressing, holding pressure, and lifting. Furthermore, by adjusting the crank radius, connecting rod length, or rotating shaft swing angle range, it can match different tread thicknesses and the required pressing stroke, thereby improving equipment versatility and pressing consistency.

[0046] like Figure 2 and Figure 6As shown, the forming assembly 4 also includes a housing 42, a cantilever beam 43, a support frame 44, a positioning assembly 45, and a bottom pressure roller 46; the top of the housing 42 is provided with a laterally extending cantilever beam 43; a first drive motor is disposed inside the housing 42, and its output shaft is connected to the forming roller 41; the support frame 44 is disposed at the front end of the housing 42 and located on the left and right sides of the forming roller 41; the positioning assembly 45 includes a plurality of telescopic actuators 451, which are respectively disposed on the cantilever beam 43 and the two support frames 44, and face the surface of the forming roller 41 at different angles. Each telescopic actuator 451 drives a positioning member 452 to move in a straight line. The positioning member 452 has two oppositely disposed clamping pieces for clamping and positioning the tire tread from both sides; the bottom pressure roller 46 is vertically and vertically disposed at the bottom of the housing 42 for pressing the tire tread on the forming roller 41 from below. The housing 42 and the cantilever beam 43 provide overall mounting rigidity and overhead space for the molding assembly 4, allowing the positioning assembly 45 to approach the surface of the molding roller 41 from multiple angles and points. This enables reliable clamping and positioning of the tread segment, reducing the probability of displacement during transfer, compaction, and resetting, and improving the consistency of the bonding position. The first drive motor is built into the housing 42, which contributes to a compact structure and protection, reducing the impact of dust and adhesive on the motor. The support frame 44 is located on the left and right sides of the molding roller 41, providing stable support for the positioning action and making the clamping force more even. The bottom pressure roller 46 compacts the tread from below, improving the flatness and bonding reliability of the tread bonding, reducing air bubbles, warping, and local voids, thereby improving molding quality and finished product consistency, and reducing rework rate.

[0047] This application also provides a bicycle tire forming method, which uses the above-described bicycle tire forming machine and automatically executes a forming cycle in the following sequence: S1 Tire Tread Centering and Positioning: Controls the feeding and conveying components to transport the tire tread. When the tire tread detection sensor detects the tire tread, it triggers the centering mechanism to center and correct the tire tread. After centering is completed, it controls the conveying to stop. S2 Pressing and Fixed Length Output: Control the conveying component to move down and control the drive device to drive the pressure roller to press down, pressing the tread onto the forming roller; calculate and control the first drive motor to rotate the first preset angle based on the real-time diameter of the forming roller obtained by the detection unit, so as to output a tread of constant length; S3 Cutting and Transfer: Control the cutting mechanism to cut the tire tread; control the first drive motor to rotate at the second preset angle to bring the cut tire tread segment to the surface of the forming roller; S4 Reset: The drive unit is controlled to lift the pressure roller and the centering mechanism is reset; after the drive unit drives the pressure roller to press down again, the first drive motor is controlled to reverse the third preset angle; then the drive unit is controlled to lift the pressure roller and the conveying assembly is controlled to rise and reset. This method automates the centering, pressing, length setting, cutting, transfer, and reset actions in a fixed sequence, reducing quality fluctuations caused by differences in manual operation. S1 triggers centering and stopping through a sensor, ensuring that subsequent processes use a consistent starting position as a benchmark, improving the consistency of the bonding position. S2 introduces the real-time diameter of the forming roller into the length calculation based on the traction conditions established during pressing, enabling the output of a constant length tread segment even when the forming roller expands or contracts or its diameter changes, significantly reducing length errors and cumulative deviations. S3 uses a preset angle transfer to position the tread segment to the designated station, improving the consistency of the bonding cycle. S4 reduces residual tension, angle drift, or cumulative errors in the mechanism through reset and reverse correction actions, improving the stability of continuous cycles and long-term operational consistency, thereby increasing the finished product qualification rate and reducing the frequency of downtime and adjustments.

[0048] The foregoing description of embodiments of the present invention, through which those skilled in the art are able to implement or use the present invention, will be readily apparent to those skilled in the art. Various modifications to these embodiments will be readily apparent to those skilled in the art. The general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novelty disclosed herein.

Claims

1. A bicycle tire forming machine, comprising a frame (1), characterized in that, Also includes: The feeding assembly (2) is fixed to the top of the frame (1) and is used to convey the tire tread. The tread conveying device (3) is located at the end of the feeding assembly (2) and is obliquely downward; the tread conveying device (3) includes a mounting platform (31), and the bottom of the mounting platform (31) is provided with an angle adjustment mechanism (32) for connecting the mounting platform (31) to the frame (1) and adjusting and locking its oblique angle; The mounting platform (31) is provided with a lifting mechanism (33) extending obliquely thereto, and a conveying component (34) is provided on the lifting mechanism (33). The conveying component (34) is configured to move up and down along the lifting mechanism (33). The centering mechanism (35), the cutting mechanism (36), and the tread detection sensor are provided on the mounting platform (31). The tread detection sensor is set vertically relative to the middle part of the centering mechanism (35) to detect the tread. A pressure roller (37) and a drive device (38) are also provided on the mounting platform (31) downstream of the tread detection sensor. The drive device (38) is configured to drive the pressure roller (37) to perform lifting and lowering movements. The forming component (4) includes a forming roller (41) disposed obliquely below the tread conveying device (3). The forming roller (41) has an expandable and contractible structure. The forming roller (41) is connected to a detection unit for detecting its diameter and is driven by a first drive motor. The control unit is connected to the tread detection sensor, the centering mechanism (35), the drive device (38), the cutting mechanism (36), the lifting drive device (38) of the conveying assembly (34), the first drive motor, and the detection unit. The control unit is configured to adjust the single rotation amount of the first drive motor according to the diameter signal of the detection unit and to automatically execute the complete forming cycle. The forming cycle includes at least the sequentially controlled tread centering and positioning stage, the conveying assembly (34) lowering and tread pressing stage, the fixed length output and cutting stage based on the real-time diameter, and the tread segment transfer and each actuator reset stage.

2. The bicycle tire forming machine according to claim 1, characterized in that, The feeding assembly (2) includes at least one guide roller (21) disposed at its input starting end, and a roller track composed of a plurality of conveyor rollers (22) located downstream of the guide roller (21); the guide roller (21) is used to guide the tire tread into the roller track.

3. The bicycle tire forming machine according to claim 1, characterized in that, The frame (1) includes a mounting plate (11) disposed adjacent to the tread conveying device (3); The angle adjustment mechanism (32) includes a fixed support rod (321) and an adjustment locking rod (322) that are horizontally fixed to the bottom of the mounting platform (31). The free end of the fixed support rod (321) is rotatably connected to the mounting plate (11); The free end of the adjusting locking rod (322) passes through the arc-shaped adjusting groove (111) provided on the mounting plate (11) and can move and lock along the arc-shaped adjusting groove (111). The arc-shaped adjusting groove (111) is set with the rotation axis of the fixed support rod (321) as the center.

4. The bicycle tire forming machine according to claim 1, characterized in that, The lifting mechanism (33) includes a guide rail that extends obliquely along the mounting platform (31); The conveying assembly (34) includes a chassis (341), a conveying roller (342), and a second drive motor (343). The chassis (341) is mounted on a guide rail and can slide along it. The conveying roller (342) is rotatably mounted on the top of the chassis (341). The second drive motor (343) is mounted on the top of the chassis (341) and located at one end of the conveying roller (342) for driving the conveying roller (342) to rotate. The control unit is configured to, after the tread detection sensor detects the tread, delay for a preset time to control the second drive motor (343) to stop the rotation of the conveying roller (342).

5. The bicycle tire forming machine according to claim 4, characterized in that, The conveying assembly (34) also includes a pair of lateral support beams (344) and a plurality of support units (345). The pair of lateral support beams (344) are arranged opposite to each other and fixed to the top sides of the chassis (341); The plurality of support units (345) are spaced apart between the pair of lateral support beams (344) along the conveying direction; The support unit (345) includes an adjusting rod (3451) and a support member (3452). The adjusting rod (3451) is arranged perpendicular to the conveying direction, and the support member (3452) is rotatably sleeved on the adjusting rod (3451). The support member (3452) is circumferentially provided with a plurality of rolling elements (3453) arranged along its axial direction. The rolling elements (3453) protrude from the surface of the support member (3452) and are used to support the tire tread while allowing the tire tread to adjust its position perpendicular to the conveying direction.

6. The bicycle tire forming machine according to claim 5, characterized in that, The conveying assembly (34) further includes a limiting structure (346), the limiting structure (346) comprising: Two limiting brackets (3461) are respectively set on the left and right sides of the tire tread conveying path and arranged symmetrically to limit the tread laterally; Multiple limiting support members (3462) are laterally connected between the pair of lateral support beams (344) and respectively disposed between adjacent support units (345) to support the limiting bracket (3461). The limiting bracket (3461) is provided with several limiting rollers (3463) to reduce friction when guiding the tire tread laterally; The limiting bracket (3461) is provided with a plurality of clearance notches (3464), the positions of which correspond to the support unit (345); At least one of the two limiting brackets (3461) is an adjustable structure, which is connected to an adjusting component (3465) through a screw mechanism to realize the lateral position adjustment of the limiting bracket (3461).

7. The bicycle tire forming machine according to claim 5, characterized in that, The cutting mechanism (36) includes a support platform (361), a third drive motor (362), a cutter (363), and a protective structure (364). The support platform (361) is fixedly installed at both ends on the lateral support beam (344) of the conveying assembly (34), and its top is an inclined plane; The third drive motor (362) is fixedly mounted on the inclined top of the support platform (361); The cutter (363) is connected to the third drive motor (362) via a lead screw structure. The third drive motor (362) is configured to drive the cutter (363) to reciprocate along the lead screw direction. The protective structure (364) is a cage-like cover with multiple through holes, which covers at least part of the support platform (361), the third drive motor (362) and the cutter (363), and has an opening for the tire tread to enter and exit.

8. The bicycle tire forming machine according to claim 5, characterized in that, The drive device (38) includes a fourth drive motor (381), a rocker arm mechanism (382), and a linkage mechanism (383). The fourth drive motor (381) is fixedly installed on a lateral support beam (344) on one side; The swing arm mechanism (382) includes a pair of vertically arranged support arms and a rotating shaft. The pair of support arms are respectively fixed to the ends of the two side support beams (344) along the conveying direction, and the rotating shaft is rotatably supported between the pair of support arms. The pressure roller (37) is hinged to the rotating shaft by at least one cantilever link (384); The linkage mechanism (383) is connected between the output end of the fourth drive motor (381) and the rotating shaft, and is used to convert the rotational motion of the fourth drive motor (381) into the swing of the rotating shaft, thereby driving the pressure roller (37) to rise and fall.

9. The bicycle tire forming machine according to claim 1, characterized in that, The molding component (4) also includes a housing (42), a cantilever beam (43), a support frame (44), a positioning component (45), and a bottom pressure roller (46). The top of the housing (42) is provided with a transversely extending cantilever beam (43). The first drive motor is located inside the housing (42), and its output shaft is connected to the forming roller (41); The support frame (44) is located at the front end of the housing (42) and on the left and right sides of the forming roller (41); The positioning component (45) includes a plurality of telescopic actuators (451), which are respectively disposed on the suspension beam (43) and two support frames (44) and face the surface of the forming roller (41) at different angles. Each telescopic actuator (451) drives a positioning member (452) to move in a straight line. The positioning member (452) has two oppositely arranged clamping pieces for clamping the positioning tread from both sides. The bottom pressure roller (46) is vertically mounted at the bottom of the housing (42) to compact the tread on the forming roller (41) from below.

10. A method for forming a bicycle tire, characterized in that, The bicycle tire forming machine as described in claim 1 is used, and the forming cycle is automatically executed in the following sequence: S1 Tire Tread Centering and Positioning: Controls the feeding and conveying components to transport the tire tread. When the tire tread detection sensor detects the tire tread, it triggers the centering mechanism to center and correct the tire tread. After centering is completed, it controls the conveying to stop. S2 Pressing and Fixed Length Output: Control the conveying component to move down and control the drive device to drive the pressure roller to press down, pressing the tread onto the forming roller; calculate and control the first drive motor to rotate the first preset angle based on the real-time diameter of the forming roller obtained by the detection unit, so as to output a tread of constant length; S3 Cutting and Transfer: Control the cutting mechanism to cut the tire tread; control the first drive motor to rotate at a second preset angle to bring the cut tire tread segment to the surface of the forming roller; S4 Reset: Control the drive device to lift the pressure roller and control the centering mechanism to reset; control the drive device to drive the pressure roller to press down again, and control the first drive motor to reverse the third preset angle; then control the drive device to lift the pressure roller and control the conveying component to rise and reset.

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