Forming equipment for bicycle saddle leather

Abstract

The invention relates to the technical field of bicycle accessory processing, and discloses bicycle saddle leather forming equipment which comprises a limiting base, a positioning plate and a lower limiting module arranged at the top end of the positioning plate are installed on the limiting base, a shaping groove is formed in the lower limiting module, a heating assembly is arranged in the shaping groove, and a hinge frame is installed on one side of the positioning plate and connected with the heating assembly. A limiting cover plate and an upper sealing module are movably clamped on the hinge frame, an air exhaust end block and a stretching frame are arranged at the bottom of the upper sealing module, the stretching frame is arranged in a containing groove of the lower limiting module, a supporting frame is arranged at the bottom of the stretching frame, and a rolling shaft is rotationally installed at the top of the stretching frame; compared with the prior art, dynamic tension adjustment of leather in the winding process is achieved through linkage of the negative pressure adsorption device arranged in the winding shaft and the servo motor, a grid structure of the adsorption plate is matched with air pressure equipment to form a local negative pressure field, leather with different thicknesses can be accurately adsorbed, and the leather stretching uniformity is improved through testing.

Description

Technical Field

[0001] The invention relates to the technical field of bicycle accessory processing, in particular to a bicycle saddle leather molding device. Background Art

[0002] In the process of processing bicycle saddles, leather-covered bicycle saddles not only need to provide a comfortable riding experience, but also need to have good aesthetics. Leather-covered seat cushions are comfortable, durable, and have good texture, but the price is relatively high. Therefore, they are often used in high-end bicycle saddles to provide a high-quality riding experience.

[0003] In CN 216760569 U, it is mentioned that the leather is shaped by hollow parts. However, the leather is still prone to leakage during the injection and foaming process, resulting in bubbles on the leather surface, or incomplete filling inside. The saddle feels hollow to the touch. During the cutting process, if the leather pressing plate at the edge of the mold is designed as a rigid structure in contact with the leather, the operator may still need to perform manual adjustment in the prior art due to the error in leather thickness, which may easily result in uneven reserved amounts and affect subsequent processing effects. For this reason, we propose a forming device for bicycle saddle leather to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a bicycle saddle leather molding device to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a bicycle saddle leather molding device, comprising:

[0006] A limiting base, on which a positioning plate is installed;

[0007] A lower limit module, which is arranged at the top of the positioning plate;

[0008] An articulated frame, the articulated frame is installed on one side of the positioning plate, the articulated frame is movablely provided with a limit cover plate and an upper sealing module, the upper sealing module is provided with an exhaust end block, the lower limit module is provided with a shaping groove, a heating component is provided inside the shaping groove, and is used to cooperate with the exhaust end block to form a vacuum chamber;

[0009] A stretching frame, a pair of storage grooves are provided on the lower limit module, the stretching frame is arranged inside the storage grooves, the stretching frame is rotatably provided with a winding shaft, and a support frame is installed at the bottom of the stretching frame, and the winding shaft is used for winding and stretching excess leather. During the saddle processing process, the leather can be clamped inside the molding groove of the lower limit module, and cooperate with the stretching frame to play a limiting role, thereby reducing the occurrence of wrinkles and bubbles in the subsequent coating process. The saddle frame can be clamped inside the clamping groove and follow the upper sealing module to fit one side of the leather. Subsequently, under the action of the vacuum end block, the sealing cavity formed between the upper sealing module and the molding groove can be vacuumed to make the leather close to the saddle frame. At this time, the heating component can melt the hot melt adhesive on the top of the foam pad, and adhere the saddle frame and the leather together, which is more efficient than manual lamination processing.

[0010] Preferably, transmission grooves are provided at both ends of the stretching frame, and transmission plug plates are movably provided inside the transmission grooves, and the winding shaft is rotatably arranged between the transmission plug plates;

[0011] The interior of the winding shaft is hollow, and an adsorption plate is provided on the surface of the winding shaft, and the adsorption plate is made of a mesh material. A transmission hose is connected to one side of the winding shaft, and the transmission hose passes through a transmission plug plate on one side and is connected to a lower limit module and an external air pressure device. A servo motor is provided on the other side of the winding shaft, and the servo motor is installed on a transmission plug plate on one side. The winding shaft can adsorb one side of the leather with the help of negative pressure and rewind it in cooperation with the servo motor.

[0012] Preferably, a plurality of positioning hooks are installed at both ends of the winding shaft, the bottom of the positioning hooks is arc-shaped, the arc-shaped ends of the positioning hooks are clamped at both ends of the winding shaft, a piston tube is provided between the positioning hooks, a plurality of straight grooves are opened on the piston tube, the positioning hook passes through the straight grooves and a compression tube is provided between the positioning hook and the piston tube, so that the piston tube can rotate itself during the movement of the piston tube along the arc-shaped end of the positioning hook. When the compression tube is in a stretched state, the internal space is larger, and the expansion ball can be in a normal state. When the negative pressure disappears, the piston rod can be reset along the arc-shaped end of the positioning hook, which can squeeze the compression tube, thereby causing the internal air pressure of the expansion ball to change and expand.

[0013] Preferably, both ends of the reel are equipped with connecting disks, an air delivery ring is installed on the surface of the connecting disk, the compression tube is connected with the air delivery ring by means of a rubber tube, a plurality of expansion balls are installed on the connecting disk, the expansion balls are connected with the air delivery ring, and a limit ring is installed on the outer wall of the expansion ball;

[0014] The limiting ring and the connecting disk are arranged concentrically, and a plurality of straight grooves are opened on the outer wall of the limiting ring, and a plastic baffle is installed inside the straight groove. As the air pressure inside the expansion ball changes, the limiting ring expands outward, so that the plastic baffle can fit inside the leather, and cooperate with the stop block at the bottom to play a limiting role, which will not affect the cutting process of the operator and does not require secondary positioning and clamping, effectively improving the overall processing efficiency.

[0015] Preferably, the lower limit module is respectively provided with a transmission roller and a movable insert plate, and the transmission roller and the movable insert plate are respectively arranged at the front and rear ends of the molding groove, and a stretching groove is opened at the rear end of the molding groove, and the transmission roller is rotatably arranged inside the stretching groove. The transmission roller is made of rubber, and a plurality of reset gaskets are installed on the movable insert plate. The reset gasket is arc-shaped and is used to limit one end of the leather, so as to position the front end of the leather and reduce accidents such as offset in the subsequent covering process.

[0016] Preferably, a plurality of buffer plug plates are inserted on the lower limit module, and the top of the buffer plug plate can be against the limit cover plate, a hollow groove is opened on the limit cover plate, and the position of the hollow groove corresponds to the shaping groove, and a blocking pad is installed on the limit cover plate, and the position of the blocking pad corresponds to the stretching groove. The blocking pad can be clamped inside the stretching groove to play a limiting role, and is used to position and clamp the rear end of the leather to be processed.

[0017] Preferably, a blocking grid is installed on the vacuum end block, and the blocking grid is composed of a plurality of arc-shaped shafts and grid sheets, and the arc-shaped shafts and the grid sheets are staggered. A plurality of air pressure tubes are installed on the blocking grid, and the air pressure tubes and the arc-shaped shafts are vertically staggered, which can perform multi-stage separation of dust and debris and reduce the situation in which the processing quality is affected by internal blockage during the operation of the equipment.

[0018] Preferably, a reset shaft is clamped on the air pressure tube, the cross-section of the reset shaft is arc-shaped and elastic, a plurality of elliptical grooves are opened on the reset shaft, and an adsorption shaft is clamped inside the elliptical grooves, and the adsorption shaft is elastic and has nylon barbs on the surface, and with the help of the airflow during the vacuuming process, the adsorption shaft can be driven to swing during the vacuuming process, which can play a blocking role and reduce dust and the like from being stuck on the blocking grid.

[0019] Preferably, a snap-in groove is provided at the bottom of the upper sealing module, and the snap-in groove is used to connect the saddle bracket, and a foam pad is provided on the saddle bracket. The snap-in groove is located directly above the vacuum end block, and the saddle bracket can be snapped inside the snap-in groove to play a limiting role.

[0020] Preferably, the movable card on the support frame is provided with a plurality of reset plugs, the reset plug is in a "U" shape, a stop block is installed on the top of the reset plug, the stop block is made of rubber material, and can play a blocking role with the help of the stop block to prevent the leather from returning and affecting the processing during subsequent use.

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

[0022] 1. The present invention realizes dynamic tension adjustment of leather during winding by linking the negative pressure adsorption device built into the winding shaft with the servo motor. The grid structure of the adsorption plate cooperates with the air pressure device to form a local negative pressure field, which can accurately adsorb leather of different thicknesses. According to the test, the stretching uniformity of the leather is improved, and the wrinkle defects existing in the traditional manual operation are effectively eliminated.

[0023] 2. The present invention uses an expansion ball and a limit ring combination system to generate radial expansion force through air pressure drive during the cutting stage. This structure can control the offset of the coil end face within a certain range. Combined with the real-time pressure compensation of the deformable compression tube, the cutting accuracy is improved compared with the traditional clamp;

[0024] 3. The present invention adopts a multi-layer composite blocking grid and a dynamic reset clamping shaft combination technology, and drives the nylon barb adsorption unit to produce periodic vibration through the pressure difference during the vacuuming process, thereby playing a role of blocking and separating, and reducing the accidental blockage during use;

[0025] 4. The composite protective device of the present invention, which is composed of a buffer plug plate and a stop block, can realize rapid braking when the equipment operates abnormally through the friction damping characteristics of the rubber stop block, thereby reducing the impact of leather return on processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 This is a schematic diagram of the upper structure of the positioning plate of the present invention;

[0028] Figure 3 For the present invention Figure 2 A partial enlarged schematic diagram in the middle;

[0029] Figure 4 This is a schematic diagram of the upper sealing module structure of the present invention;

[0030] Figure 5 For the present invention Figure 4 A partial enlarged schematic diagram of point B in the middle;

[0031] Figure 6 It is a structural schematic diagram of one side of the stretching frame of the present invention;

[0032] Figure 7 This is a schematic diagram of the structure of the other side of the stretching frame of the present invention.

[0033] Figure 8 For the present invention Figure 7 A partial enlarged schematic diagram of point C in the middle;

[0034] In the figure: 1. limit base; 2. lower limit module; 3. articulated frame; 4. stretching frame; 11. positioning plate; 21. transmission roller; 22. storage slot; 23. movable plug plate; 24. shaping slot; 25. reset gasket; 31. limit cover plate; 32. upper sealing module; 33. exhaust end block; 34. clamping slot; 35. blocking pad; 36. blocking grid; 361. air pressure tube; 37. reset clamping shaft; 41. support frame; 42. winding shaft; 421. positioning hook; 422. compression tube; 43. reset plug block; 431. stop block; 44. transmission plug plate; 45. piston plug tube; 46. servo motor; 47. connecting plate; 471. expansion ball; 48. limit ring. DETAILED DESCRIPTION

[0035] 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.

[0036] See also Figure 1-Figure 7 The present invention provides a technical solution: a forming device for bicycle saddle leather, comprising:

[0037] A limiting base 1, on which a positioning plate 11 is mounted;

[0038] A lower limit module 2, which is arranged at the top of the positioning plate 11;

[0039] The articulated frame 3 is installed on one side of the positioning plate 11. A limit cover plate 31 and an upper sealing module 32 are movably provided on the articulated frame 3. An exhaust end block 33 is installed on the upper sealing module 32. A shaping groove 24 is provided on the lower limit module 2. A heating component is provided inside the shaping groove 24 to cooperate with the exhaust end block 33 to form a vacuum chamber;

[0040] A pair of storage grooves 22 are provided on the stretching frame 4 and the lower limit module 2. The stretching frame 4 is arranged inside the storage groove 22. A winding shaft 42 is rotatably provided on the stretching frame 4. A support frame 41 is installed at the bottom of the stretching frame 4. The winding shaft 42 is used for winding and stretching excess leather. During the saddle processing, the leather can be clamped inside the molding groove 24 of the lower limit module 2, and cooperate with the stretching frame 4 to play a limiting role to reduce the occurrence of wrinkles and bubbles in the subsequent coating process. The saddle frame can be clamped inside the clamping groove 34, and then the upper sealing module 32 is attached to one side of the leather. Subsequently, under the action of the vacuum end block 33, the sealing cavity formed between the upper sealing module 32 and the molding groove 24 can be evacuated to make the leather close to the saddle frame. At this time, the heating component can expand the foam pad to adhere the saddle frame and the leather together, which is more efficient than manual lamination processing.

[0041] like Figure 6 As shown, in the process of limiting, the excess leather needs to be stored, and transmission grooves are provided at both ends of the stretching frame 4, and a transmission plug plate 44 is movably provided inside the transmission groove, and the winding shaft 42 is rotatably arranged between the transmission plug plates 44, and the position of the transmission plug plate 44 can be adjusted, and can be adjusted according to the thickness of leather of different materials;

[0042] The interior of the winding shaft 42 is hollow, and an adsorption plate is provided on the surface of the winding shaft 42, and the adsorption plate is made of a mesh material. A transmission hose is connected to one side of the winding shaft 42, and the transmission hose passes through a transmission plug plate 44 on one side and is connected to the lower limit module 2 and an external air pressure device. A servo motor 46 is provided on the other side of the winding shaft 42, and the servo motor 46 is installed on a transmission plug plate 44 on one side. With the help of external air pressure equipment, the adsorption plate can be in a negative pressure state, and excess leather can be adsorbed on the winding shaft 42 for easy winding and stretching, so that the leather is in a taut state, which is convenient for subsequent wrapping and bonding, and reduces wrinkles and the like during the production process.

[0043] like Figure 7 As shown, a plurality of positioning hooks 421 are installed at both ends of the winding shaft 42. The bottom of the positioning hook 421 is arc-shaped. The arc-shaped ends of the positioning hook 421 are clamped at both ends of the winding shaft 42. A piston tube 45 is provided between the positioning hooks 421. A plurality of straight grooves are opened on the piston tube 45. The positioning hook 421 passes through the straight grooves and a compression tube 422 is provided between the positioning hook 421 and the piston tube 45. The piston tube 45 can push the compression tube 422 to deform in the absence of negative pressure, and transport the internal gas to the inside of the expansion ball 471.

[0044] like Figure 7As shown, in order to reduce the situation that the excess leather will be tilted during the subsequent cutting process, connecting plates 47 are installed at both ends of the winding shaft 42, and an air supply ring is installed on the surface of the connecting plate 47. The compression tube 422 is connected with the air supply ring by means of a rubber tube. A plurality of expansion balls 471 are installed on the connecting plate 47, and the expansion balls 471 are connected with the air supply ring. A limit ring 48 is installed on the outer wall of the expansion ball 471. As the expansion ball 471 expands and deforms under the action of air pressure, it can push the limit ring 48 to expand outward, which can play a supporting role.

[0045] The limiting ring 48 is concentrically arranged with the connecting disk 47, and a plurality of straight grooves are formed on the outer wall of the limiting ring 48, and a plastic baffle is installed inside the straight groove. As the limiting ring 48 is deformed, the plastic baffle inside can press against the leather on the outside, thereby limiting the position of the leather wound on the outside of the winding shaft 42, and ensuring stability when the adsorption air pressure on the winding shaft 42 disappears, thereby reducing the occurrence of unexpected situations and facilitating the operator to directly perform cutting processing without the need for secondary limiting clamping.

[0046] like Figure 3 As shown, the leather needs to be positioned before processing, and a transmission roller 21 and a movable insert plate 23 are respectively provided on the lower limit module 2. The transmission roller 21 and the movable insert plate 23 are respectively arranged at the front and rear ends of the shaping groove 24, and a stretching groove is provided at the rear end of the shaping groove 24. The transmission roller 21 is rotatably arranged inside the stretching groove, and the rear end of the leather can be wound around the transmission roller 21 for auxiliary positioning. The transmission roller 21 is made of rubber, and a plurality of reset gaskets 25 are installed on the movable insert plate 23. The reset gasket 25 is arc-shaped and is used to limit one end of the leather. The front end of the leather can be clamped at the bottom of the reset gasket 25 and clamped and positioned under the action of the limit cover plate 31. Before subsequent covering, a part of the leather on the transmission roller 21 can be returned, which can be used for the surplus of subsequent covering, thereby reducing the accidental cracking of the leather due to excessive tension.

[0047] like Figure 4 As shown, a plurality of buffer plates are inserted on the lower limit module 2, and the top of the buffer plate can be against the limit cover plate 31 to reduce the possibility of bumping during subsequent use. A hollow groove is opened on the limit cover plate 31, and the position of the hollow groove corresponds to the shaping groove 24. A blocking pad 35 is installed on the limit cover plate 31, and the position of the blocking pad 35 corresponds to the stretching groove. The blocking pad 35 can be clamped inside the stretching groove to position the rear end of the leather, and the transmission roller 21 can be adjusted before positioning to reserve a margin for leather covering.

[0048] like Figure 4As shown, in order to reduce the blockage during the vacuum process that affects the processing quality, a blocking grid 36 is installed on the vacuum end block 33. The blocking grid 36 is composed of a plurality of arc-shaped shafts and grid sheets, and the arc-shaped shafts and the grid sheets are staggered. A plurality of air pressure tubes 361 are installed on the blocking grid 36. The air pressure tubes 361 are vertically staggered with the arc-shaped shafts. With the help of the grid sheets, debris particles and the like can be separated, thereby reducing the blockage of the blocking grid 36 during the long processing and production process, affecting the efficiency of subsequent vacuuming, and avoiding the occurrence of bulging bubbles during the coating process.

[0049] like Figure 5 As shown, in order to reduce the clogging caused by dust accumulation during the vacuuming process, a reset card shaft 37 is provided on the air pressure tube 361. The cross-section of the reset card shaft 37 is arc-shaped and elastic. A plurality of elliptical grooves are provided on the reset card shaft 37, and an adsorption shaft is provided inside the elliptical groove. The adsorption shaft is elastic and has nylon barbs on the surface. After vacuuming, the air pressure tube 361 can be deformed under the action of pressure, thereby driving the reset card shaft 37 to expand, and the gap between the reset card shafts 37 can be reduced, thereby reducing the situation where dust and debris are stuck on the blocking grid 36. The nylon barbs on the surface of the adsorption shaft can adsorb excess dust and debris during the vacuuming process, which is convenient for subsequent unified cleaning and maintenance. The reset card shaft 37 can be disassembled and cleaned separately, thereby reducing the subsequent maintenance cost.

[0050] like Figure 4 As shown, a snap-in groove 34 is provided at the bottom of the upper sealing module 32, and the snap-in groove 34 is used to connect the saddle bracket, and a foam pad is provided on the saddle bracket. The snap-in groove 34 is located directly above the exhaust end block 33, and the saddle frame can be snapped inside the snap-in groove 34 for auxiliary installation.

[0051] like Figure 6 As shown, the movable card on the support frame 41 is provided with a plurality of reset plugs 43, and the reset plug 43 is in a "U" shape. A gap is provided between the reset plug 43 and the support frame 41, and the gap between the reset plug 43 and the support frame 41 can be adjusted according to actual conditions, and a stop block 431 is installed on the top of the reset plug 43, and the upper bottom of the stop block 431 is made of rubber. The stop block 431 can be against the surface of the leather during the winding process for auxiliary positioning, and the stop block 431 is trapezoidal, and the upper bottom of the stop block 431 can rub against the leather during the retraction process to reduce the situation of rapid retraction during the winding process, and in the subsequent cutting process, when the air pressure generated by the external device disappears, and the servo motor 46 reverses at this time, it can cooperate with the reset plug 43 to drive the leather to retreat a certain amount, and the gap between the reset plug 43 and the support frame 41 can be adjusted according to the thickness of the leather, which is used for thickness compensation during subsequent leather cutting to reduce the size deviation of the leather after cutting.

[0052] Working principle: First, during the saddle processing, the leather can be clamped in the molding groove 24 of the lower limit module 2, and the stretching frame 4 can be used to limit the position, thereby reducing the occurrence of wrinkles and bubbles in the subsequent coating process. The saddle frame can be clamped in the clamping groove 34, and then the upper sealing module 32 is attached to one side of the leather. Subsequently, under the action of the vacuum end block 33, the sealing cavity formed between the upper sealing module 32 and the molding groove 24 can be evacuated to make the leather close to the saddle frame. At this time, the heating component can expand the foam pad. , the saddle frame and the leather are adhered together, which is more efficient than manual laminating processing, and in the limiting process, the front and rear ends of the leather can be clamped on the transmission roller 21 and the movable plug plate 23 respectively, and the transmission roller 21 can roll up the excess leather to facilitate subsequent cutting and adjustment. As the limiting cover plate 31 is attached to the lower limiting module 2 and rests on the movable plug plate 23, the blocking pad 35 is clamped inside the stretching groove, and the front and rear ends of the leather can be limited to ensure stability and prevent deviation during the subsequent shaping process;

[0053] Then, in the process of limiting the position, the excess leather on both sides can be adsorbed on the reel 42 first, and the reel 42 can adsorb one side of the leather with the help of negative pressure, and cooperate with the servo motor 46 to reel and stretch, so that the excess leather can be quickly arranged, so that the leather is in a relatively tight state before it contacts the saddle frame, which can reduce the generation of wrinkles in the subsequent covering process, and as the leather is in the process of covering, the remaining rolled leather is prone to return during the stretching process, and the support frame 41 can be against the surface of the leather, with the help of the stop block 431 on the top of the reset plug 43 to play a blocking role, the stop block 431 is trapezoidal, and can lock the leather that is quickly returned in the reverse direction. It can prevent the leather from returning too much during the covering process, causing bubbles to be generated during the covering process. After the limit is completed, vacuum can be drawn to make the leather close to the covering. During the vacuum process, the air pressure tube 361 can expand under the action of negative pressure, which can reduce the gap between the air pressure tubes 361 and reduce the debris and dust on the leather or saddle frame stuck on the grid sheet during the vacuum process. It can reduce the situation of internal blockage during long-term processing. As the air pressure of the air pressure tube 361 changes, the reset card shaft 37 can be deformed. With the help of the nylon barbs on the adsorption shaft, the surface of the blocking grid frame 36 is assisted in cleaning. The reset card shaft 37 can be replaced separately, which is convenient for subsequent maintenance and cleaning.

[0054] Finally, the internal heating component is operated to make the hot melt adhesive on the top of the foam pad adhere to the leather and shape the leather on the saddle frame. At this time, the upper sealing module 32 and the lower limit module 2 can be separated, and the operator manually cuts off the excess leather. When the negative pressure at the winding shaft 42 disappears, the piston insert 45 can be retracted to squeeze the compression tube 422, which can change the air pressure inside the expansion ball 471 and make the limit ring 48 expand outward, so that the plastic baffle can be attached to the inside of the leather. Cooperating with the stop block 431 at the bottom, it can play a limiting role and will not affect the cutting process of the operator, thereby ensuring the processing quality. After the cutting is completed, the transmission plug plate 44 can be lifted to quickly pull out the excess.

[0055] 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 molding device for bicycle saddle leather, characterized in that: include: A limiting base, on which a positioning plate is installed; A lower limit module is arranged at the top of the positioning plate, and a shaping groove is provided on the lower limit module; An articulated frame is installed on one side of the positioning plate. The movable card on the articulated frame is provided with a limit cover plate and an upper sealing module. The bottom of the upper sealing module is provided with an exhaust end block. The exhaust end block cooperates with the shaping groove to form a vacuum chamber for leather covering; The stretching frame is arranged in the storage groove of the lower limit module. A support frame is provided at the bottom of the stretching frame, and a winding shaft is rotatably installed on the top. The winding shaft is used for winding the leather to limit the position. A plurality of U-shaped reset plugs are movably arranged on the support frame.

2. The bicycle saddle leather molding device according to claim 1, characterized in that: Transmission slots are provided at both ends of the stretching frame, and transmission plug plates are movably clamped in the transmission slots. Both ends of the winding shaft are rotatably connected between the transmission plug plates, and the positions of the transmission plug plates are adjustable to adapt to leathers of different thicknesses. The winding shaft is hollow inside and provided with an adsorption plate made of a grid material on the surface. One side of the winding shaft is connected to an external air pressure device through a transmission hose, and the other side is connected to a servo motor for driving the winding shaft to rotate.

3. The bicycle saddle leather molding device according to claim 1, characterized in that: Both ends of the reel are provided with a plurality of positioning hooks and piston inserts, the positioning hooks penetrate the straight grooves on the piston insert and are connected to the compression tube between the piston insert, and the bottoms of the plurality of positioning hooks are arc-shaped and can be movably inserted at both ends of the reel; The compression tube is connected to the air supply ring of the connecting disk through a rubber tube. The connecting disk is clamped on one side of the positioning hook and rotatably arranged at both ends of the winding shaft. The connecting disk is provided with a plurality of expansion balls connected to the air supply ring, and the outer wall of the expansion ball is provided with a limiting ring.

4. The bicycle saddle leather molding device according to claim 3, characterized in that: The limiting ring is arranged concentrically with the connecting disk, and a straight groove with a plastic baffle is arranged on its outer wall. When the expansion ball expands, the limiting ring expands outwards, so that the plastic baffle abuts against the leather to limit its displacement.

5. The bicycle saddle leather molding device according to claim 1, characterized in that: The front and rear ends of the lower limit module are respectively provided with a transmission roller and a movable insert plate, the transmission roller is located in the stretching groove at the rear end of the shaping groove, a heating component is provided in the shaping groove, and a plurality of arc-shaped reset gaskets are provided on the movable insert plate for clamping the front end of the leather.

6. The bicycle saddle leather molding equipment according to claim 1, characterized in that: The air extraction end block is provided with a blocking grid frame, which is composed of arc shafts and grid sheets arranged in a staggered manner, and a plurality of vertically staggered air pressure tubes are installed on the grid sheets.

7. The bicycle saddle leather molding device according to claim 6, characterized in that: An elastic reset clamping shaft is clamped on the air pressure tube, and an adsorption shaft with nylon barbs is provided on the surface of the reset clamping shaft for adsorbing debris in the process of pumping air.

8. The bicycle saddle leather molding device according to claim 1, characterized in that: The reset plug blocks are evenly arranged on the support frame, and a stop block made of rubber is arranged on the top of the reset plug blocks to limit the sliding of the leather when it is returned.

9. The bicycle saddle leather molding device according to claim 1, characterized in that: A snap-in groove is provided at the bottom of the upper sealing module for fixing the saddle bracket. The snap-in groove is located above the air extraction end block, and a plurality of foam pads are connected to the mounting bracket, and hot melt adhesive is adhered to the foam pads.

10. The bicycle saddle leather molding device according to claim 1, characterized in that: The limiting cover plate is provided with a blocking pad, which is embedded in the stretching groove at the rear end of the shaping groove and is used for positioning the rear end of the leather.

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