Inflatable shaft assembling device and assembling method thereof

Abstract

The invention relates to the technical field of air expansion shafts, and provides an air expansion shaft assembling device and an assembling method thereof.The air expansion shaft assembling device comprises a supporting part; the outer cylinder fixing part is arranged on the supporting part, the fixing part comprises a moving mechanism and a rolling clamping mechanism, the moving mechanism is arranged on the supporting part, and the rolling clamping mechanism is arranged on the moving mechanism; the key bar fixing part is arranged on the supporting part, the key bar fixing part comprises a conveying mechanism and a fixing mechanism, the conveying mechanism is arranged on the supporting part, and the fixing mechanism is arranged on the side, away from the outer cylinder fixing part, of the conveying mechanism; and the combination part is arranged on the supporting part. According to the inflatable shaft assembling device, the technical problem that in the prior art, the working efficiency is low due to the fact that all the key bars are manually and independently installed in the outer cylinder can be solved.

Description

Technical Field

[0001] The present application relates to the technical field of pneumatic shafts, and in particular to an assembly device and an assembly method of a pneumatic shaft. Background Art

[0002] The pneumatic shaft assembly device is a mechanical system used to install and secure pneumatic shafts (a key component commonly used in coil processing equipment). When assembling a keyed pneumatic shaft, existing pneumatic shaft assembly devices typically insert the integral shaft core (containing the key and bladder) directly into the outer barrel (the hollow cylinder that comes into direct contact with the coil). However, this assembly method requires the entire shaft core to be replaced if a single key or bladder is damaged, which is costly. Therefore, a method is proposed in which each key is individually installed in the outer barrel before the bladder is inserted. This allows each key and bladder to be independently replaced. This allows keys to be replaced individually if they wear or the bladder is damaged, eliminating the need for a complete replacement, thus reducing costs.

[0003] However, since the specifications of the various inflatable shafts are different, each key strip is usually installed individually in the outer cylinder manually, which results in low work efficiency. Summary of the Invention

[0004] The embodiments of the present application provide an inflatable shaft assembly device and an assembly method thereof, which can improve the technical problem of low work efficiency in manually installing each key strip individually in the outer cylinder in the related art.

[0005] In a first aspect, an embodiment of the present application provides an inflatable shaft assembly device, comprising: Support part; An outer cylinder fixing portion is provided on the supporting portion, the fixing portion includes a moving mechanism and a rolling clamping mechanism, the moving mechanism is provided on the supporting portion, the rolling clamping mechanism is provided on the moving mechanism, and the rolling clamping mechanism is used to roll or clamp the outer cylinder; a key bar fixing portion, disposed on the support portion, the key bar fixing portion comprising a conveying mechanism and a fixing mechanism, the conveying mechanism being disposed on the support portion, the fixing mechanism being disposed on a side of the conveying mechanism away from the outer cylinder fixing portion, the conveying mechanism being used to convey the key bar from the key bar input end to the key bar output end, the fixing mechanism being used to approach and abut against the key bar located at the key bar output end so that the key bar abuts against the outer cylinder; and a combining portion, disposed on the supporting portion, having a screw output end, and configured to drive the screw output end close to the outer cylinder to assemble the outer cylinder and the key bar in conflict with the outer cylinder; The moving mechanism is used to drive the rolling clamping mechanism to move closer to or away from the screw output end, and the key bar output end is located directly below the screw output end and directly above the fixing mechanism and between the outer cylinder and the fixing mechanism.

[0006] The above technical solutions in the embodiments of the present application have at least the following technical effects: The pneumatic shaft assembly device provided in the embodiment of the present application provides support for other components through a supporting part, fixes the position of the outer cylinder through a rolling clamping mechanism to prevent the outer cylinder from moving during the assembly process with the key strip; drives the outer cylinder to roll through the rolling clamping mechanism and drives the rolling clamping mechanism to move through the moving mechanism to drive the outer cylinder to move, thereby adjusting the position and posture of the outer cylinder to facilitate the assembly of the outer cylinder with the key strip; transports the key strip from the key strip input end to the key strip output end located inside the outer cylinder through the conveying mechanism, and then approaches and contacts the key strip located on the key strip output end through the fixing mechanism, and contacts the key strip with the inner wall of the outer cylinder; finally, drives the screw output end close to the outer cylinder through the combining part to assemble the outer cylinder and the key strip contacting the inner wall of the outer cylinder, thereby improving the technical problem of low efficiency in manually installing each key strip separately in the outer cylinder in the related art.

[0007] In a second aspect, an embodiment of the present application provides an assembly method for an inflatable shaft assembly device, which is applicable to the inflatable shaft assembly device described in any embodiment of the first aspect above, and the assembly method for the inflatable shaft assembly device includes: The outer cylinder is placed on the rolling clamping mechanism. After the rolling clamping mechanism clamps the outer cylinder, the moving mechanism drives the outer cylinder close to the screw output end and makes at least one outer expansion groove close to the screw output end. Then, the rolling clamping mechanism releases the outer cylinder and drives the outer cylinder to roll so that the distance between at least one outer lock hole and the screw output end is the shortest and the outer cylinder is located between the combination part and the key bar output end. Then, the rolling clamping mechanism clamps the outer cylinder again. The key bar is placed on the key bar input end, and the key bar on the key bar input end is conveyed to the key bar output end by the conveying mechanism, so that the inner expansion groove is located directly below the outer expansion groove, and the inner lock hole is located directly below the outer lock hole. Then, the fixing mechanism approaches and contacts the key bar on the key bar output end so that the key bar contacts the outer cylinder, and the inner expansion groove is connected to the outer expansion groove, and the inner lock hole is connected to the outer lock hole; The outer cylinder is fixed on the outer cylinder with the outer cylinder being fixed with the key bar, and the outer cylinder is moved away from the outer cylinder to move the outer cylinder to the outer cylinder so as to facilitate the removal of the outer cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0009] Figure 1 A schematic structural diagram of an inflatable shaft assembly device provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the mobile mechanism provided in an embodiment of the present application; Figure 3 A schematic structural diagram of the rolling clamping mechanism after removing some rolling receiving members provided in an embodiment of the present application; Figure 4 A schematic structural diagram of a key bar fixing portion provided in an embodiment of the present application; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6 A schematic structural diagram of the key bar of the key bar fixing portion provided in an embodiment of the present application.

[0010] Among them, the reference numerals in the figures are: 100. Pneumatic shaft assembly device; 10. Support portion; 20. Outer cylinder fixing portion; 21. Moving mechanism; 211. Moving drive mechanism; 2111. Transmission accommodating member; 2112. Transmission member; 2113. Moving drive member; 2114. Transmission connecting member; 212. Guide support member; 213. Moving bearing member; 22. Rolling clamping mechanism; 221. Rolling accommodating member; 222. Rolling member; 223. Rolling drive member; 224. Clamping member; 30. Key bar fixing portion; 31. Conveying mechanism; 311. Height adjustment mechanism; 3111. First supporting member; 3112. Second supporting member; 3113. Locking member; 312. Key bar conveying portion; 3121. Conveying rod; 3122. Driving wheel; 3123. Driven wheel; 3124. Conveying drive member; 3125. Conveyor belt; 32. Fixing mechanism; 321, fixed driving member; 322, ejection member; 323, blocking member; 33, key bar input end; 34, key bar output end; 40, combination part; 50, key bar; 51, resistance member; 52, elastic member; 53, movable member; 54, expansion member. DETAILED DESCRIPTION

[0011] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.

[0013] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0014] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0015] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0016] In this application, "and / or" is simply a way to describe the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0017] It should be noted that, in this application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or explanations. Any embodiment or design described in this application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example" is intended to present related concepts in a concrete way, meaning that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0018] The pneumatic shaft assembly device is a mechanical system used to install and secure pneumatic shafts (a key component commonly used in coil processing equipment). When assembling a keyed pneumatic shaft, existing pneumatic shaft assembly devices typically insert the integral shaft core (containing the key and bladder) directly into the outer barrel (the hollow cylinder that comes into direct contact with the coil). However, this assembly method requires the entire shaft core to be replaced if a single key or bladder is damaged, which is costly. Therefore, a method is proposed in which each key is individually installed in the outer barrel before the bladder is inserted. This allows each key and bladder to be independently replaced. This allows keys to be replaced individually if they wear or the bladder is damaged, eliminating the need for a complete replacement, thus reducing costs.

[0019] However, since the specifications of the various inflatable shafts are different, each key strip is usually installed individually in the outer cylinder manually, which results in low work efficiency.

[0020] Based on this, in order to improve the problem of low work efficiency in the related art of manually installing each key bar individually in the outer cylinder, the embodiment of the present application provides the following solution.

[0021] See also Figure 1 The embodiment of the present application provides an inflatable shaft assembly device 100, which includes a support portion 10, an outer tube fixing portion 20, a key bar fixing portion 30 and a combination portion 40, wherein: The outer cylinder fixing portion 20 is arranged on the supporting portion 10, and the fixing portion includes a moving mechanism 21 and a rolling clamping mechanism 22. The moving mechanism 21 is arranged on the supporting portion 10, and the rolling clamping mechanism 22 is arranged on the moving mechanism 21. The rolling clamping mechanism 22 is used to roll or clamp the outer cylinder.

[0022] The key bar fixing portion 30 is arranged on the support portion 10, and the key bar fixing portion 30 includes a conveying mechanism 31 and a fixing mechanism 32. The conveying mechanism 31 is arranged on the support portion 10, and the fixing mechanism 32 is arranged on the side of the conveying mechanism 31 away from the outer tube fixing portion 20. The conveying mechanism 31 is used to convey the key bar 50 from the key bar input end 33 to the key bar output end 34, and the fixing mechanism 32 is used to approach and contact the key bar 50 located on the key bar output end 34 so that the key bar 50 contacts the outer tube.

[0023] The assembly part 40 is provided on the supporting part 10 and has a screw output end. The assembly part 40 is used to drive the screw output end close to the outer cylinder to assemble the outer cylinder and the key bar 50 that conflicts with the outer cylinder.

[0024] The moving mechanism 21 is used to drive the rolling clamping mechanism 22 to move closer to or away from the screw output end. The key bar output end 34 is located directly below the screw output end and directly above the fixing mechanism 32 and between the outer cylinder and the fixing mechanism 32 .

[0025] It is understood that the support portion 10 is a basic structure capable of providing support. For example, the support portion 10 may be a steel frame, an aluminum profile bracket, etc., but is not limited to such. The outer cylinder fixing portion 20 is a device capable of securing and moving the outer cylinder. For example, the outer cylinder fixing portion 20 may be a four-jaw chuck, a rotary table, etc., but is not limited to such. The moving mechanism 21 is a device capable of driving the rolling clamping mechanism 22 toward or away from the screw output end. For example, the moving mechanism 21 may be a double-acting cylinder, a screw drive mechanism (composed of a screw, a nut holder, a servo motor, and a guide rail), etc., but is not limited to such. The rolling clamping mechanism 22 is a device that can clamp or roll the outer cylinder. For example, the rolling clamping mechanism 22 may include a rotating table (including a driving pulley, a driven pulley and a transmission belt, the driving pulley is driven to rotate by a servo motor, the transmission belt surrounds the outer circumference of the outer cylinder, and drives the outer cylinder to roll through friction, etc., but not limited to this) and a clamping part (two-finger clamp, three-finger clamp, etc.), etc., but not limited to this. The rotating table can be set on the power output shaft of the moving mechanism 21, and the clamping part can be set on the rotating table. The key bar fixing part 30 is a device that can transport the key bar 50 from the key bar input end 33 to the key bar output end 34 and make the key bar 50 fit the inner wall of the outer tube. For example, the key bar fixing part 30 may include a fixing rod (aluminum rod, copper rod, etc.), a first driving member (single-acting cylinder, double-acting cylinder, etc.) and a second driving member (single-acting cylinder, double-acting cylinder, etc.), wherein the fixing rod can be arranged on the support part 10, the end of the fixing rod away from the outer tube fixing part 20 has a key bar input end 33, and the end of the fixing rod close to the outer tube fixing part 20 has a key bar output end 34, the first driving member can be arranged on the end of the fixing rod away from the fixing part, and the second driving member can be arranged on the end of the fixing rod close to the fixing part, the first driving member is used to push the key bar 50 from the key bar input end 33 along the fixing rod to the key bar output end 34, and the second driving member is used to push the key bar 50 located on the key bar output end 34 in the opposite direction of the gravity direction to approach and contact the inner wall of the outer tube so as to fit the inner wall of the outer tube. The conveying mechanism 31 is a device capable of conveying the key bar 50 from the key bar input end 33 to the key bar output end 34. For example, the conveying mechanism 31 may be a conveyor belt conveyor line, a driving cylinder, etc., but is not limited thereto. The fixing mechanism 32 is a device capable of contacting the key bar 50 with the outer cylinder. For example, the fixing mechanism 32 may be a double-acting cylinder, a thin cylinder, etc., but is not limited thereto.The combination part 40 is a device having a screw output end and capable of driving the screw output end close to the outer cylinder to assemble the outer cylinder and the key bar 50 that is in conflict with the outer cylinder. For example, the combination part 40 may include a translation drive (double-acting cylinder, thin cylinder, etc.), a downward drive (double-acting cylinder, thin cylinder, etc.) and an assembly part (electric screw driver, visual positioning screw driver, etc.), wherein the translation drive can be arranged on the support part 10, the downward drive can be arranged on the power output shaft of the translation drive and located above the key bar fixing part 30, the assembly part can be arranged on the power output shaft of the downward drive and have a screw output end, the translation drive is used to drive the assembly part to approach or move away from the rolling clamping mechanism 22 in the horizontal direction, the downward drive is used to drive the assembly part to approach and contact the outer wall of the outer cylinder in the direction of gravity, and the assembly part is used to output the screw through the screw output end and assemble the outer cylinder and the key bar 50 by rotating the screw.

[0026] As can be seen from the above, the pneumatic shaft assembly device 100 provided in the embodiment of the present application provides support for other components through the support part 10, and fixes the position of the outer cylinder through the rolling clamping mechanism 22 to prevent the outer cylinder from moving during the assembly process with the key strip 50; the outer cylinder is driven to roll by the rolling clamping mechanism 22 and the rolling clamping mechanism 22 is driven to move by the moving mechanism 21 to drive the outer cylinder to move, thereby adjusting the position and posture of the outer cylinder to facilitate the assembly of the outer cylinder with the key strip 50; the key strip 50 is transported from the key strip input end 33 to the key strip output end 34 located inside the outer cylinder by the conveying mechanism 31, and then approaches and contacts the key strip 50 located on the key strip output end 34 through the fixing mechanism 32, and contacts the key strip 50 with the inner wall of the outer cylinder; finally, the screw output end is driven close to the outer cylinder through the combining part 40 to assemble the outer cylinder and the key strip 50 that contacts the inner wall of the outer cylinder, thereby improving the technical problem of low efficiency in manually installing each key strip 50 separately in the outer cylinder in the related art.

[0027] In some embodiments, please refer to Figure 1 and Figure 2 The moving mechanism 21 includes a moving driving mechanism 211 , a guide support member 212 and a moving bearing member 213 .

[0028] A mobile drive mechanism 211 is mounted on the support portion 10. A guide support member 212 is mounted on the support portion 10. A mobile carrier 213 is mounted on the mobile drive mechanism 211. The side of the mobile carrier 213 facing away from the mobile drive mechanism 211 has a movable groove that mates with the guide support member 212 in a concave-convex manner. A rolling clamping mechanism 22 is mounted on the mobile carrier 213. The mobile drive mechanism 211 is capable of driving the mobile carrier 213 along the guide support member 212 toward or away from the screw output end.

[0029] It is understood that the mobile drive mechanism 211 is a driving device capable of driving the mobile carrier 213 toward or away from the screw output end along the guide support member 212. For example, the mobile drive mechanism 211 may be a double-acting cylinder, a screw drive mechanism, etc., but is not limited thereto. The guide support member 212 is a strip-shaped plate-like structure that forms a concave-convex fit with the movable groove of the mobile carrier 213, providing guidance and support for the movement of the mobile carrier 213, ensuring smooth and shake-free movement. For example, the guide support member 212 may be a linear guide rail, a dovetail guide rail, etc., but is not limited thereto.

[0030] In this arrangement, when the outer cylinder is placed on the rolling clamping mechanism 22, the mobile driving mechanism 211 drives the rolling clamping mechanism 22 along the guide support 212 to approach the screw output end, so as to drive the outer cylinder close to the screw output end, and make the outer cylinder partly located between the screw output end and the key bar output end 34, so as to facilitate the subsequent assembly of the key bar 50 with the outer cylinder.

[0031] In some embodiments, see Figure 1 and Figure 2 The mobile driving mechanism 211 includes a transmission accommodating member 2111, a transmission member 2112, a mobile driving member 2113 and a transmission connecting member 2114.

[0032] The transmission accommodating member 2111 is disposed on the support portion 10 and has a transmission accommodating space. Transmission connecting grooves are provided on both sides of the transmission accommodating member 2111, perpendicular to the contact surface between the transmission accommodating member 2111 and the support portion 10, respectively, to connect to the transmission accommodating space. A transmission member 2112 is located within the transmission accommodating space, and both ends of the transmission member 2112 are rotatably mounted on the transmission accommodating member 2111. The length of the transmission member 2112 is parallel to the length of the transmission connecting grooves. A mobile driver 2113 is disposed on the transmission accommodating member 2111. The power output shaft of the mobile driver 2113 is connected to the transmission member 2112, and the mobile driver 2113 is used to drive the transmission member 2112 to rotate. The transmission connecting member 2114 is partially located in the transmission accommodating space and is movably arranged on the transmission member 2112. The transmission connecting member 2114 has a transmission hole, which is threadedly matched with the transmission member 2112. The transmission connecting member 2114 is connected to the movable supporting member 213 through a transmission connecting groove.

[0033] The mobile driving member 2113 is used to drive the transmission member 2112 to rotate, thereby driving the transmission connecting member 2114 threadedly engaged with the transmission member 2112 to move closer to or away from the screw output end along the transmission member 2112 .

[0034] It can be understood that the transmission container 2111 is a hollow cuboid for accommodating the transmission member 2112 and the transmission connecting member 2114. For example, the transmission container 2111 can be an aluminum shell structure, an integrated bracket, etc., but is not limited thereto. The transmission member 2112 is a rod-shaped structure with a thread on the surface. The length direction of the transmission member 2112 can be parallel to the length direction of the guide support member 212. For example, the transmission member 2112 can be a ball screw, a trapezoidal screw, etc., but is not limited thereto. The mobile drive member 2113 is a drive device that can drive the transmission member 2112 to rotate, and can be arranged at the end of the transmission container 2111 away from the key bar fixing portion 30. For example, the mobile drive member 2113 can be a servo motor, a stepper motor, etc., but is not limited thereto. The transmission connecting member 2114 serves as a connecting member between the transmission member 2112 and the movable supporting member 213. A part of the transmission connecting member 2114 is located in the transmission accommodating space and cooperates with the transmission member 2112 through a thread. The other part extends through the transmission connecting groove and is fixedly connected to the movable supporting member 213. For example, the transmission connecting member 2114 can be a screw nut seat, a rack connecting plate, etc., but is not limited to this.

[0035] Thus, when the outer cylinder placed on the rolling clamping mechanism 22 needs to be driven toward the screw output end, the mobile driver 2113 drives the transmission member 2112 to rotate. The transmission connector 2114 moves linearly along the axis of the transmission member 2112 due to the cooperation between the internal thread and the transmission member 2112, toward the screw output end. The transmission connector 2114 drives the mobile carrier 213 toward the screw output end, thereby driving the rolling clamping mechanism 22 disposed on the mobile carrier 213 toward the screw output end, thereby driving the outer cylinder placed on the rolling clamping mechanism 22 toward the screw output end. When the outer cylinder placed on the rolling clamping mechanism 22 needs to be driven away from the screw output end, the mobile driver 2113 drives the transmission member 2112 to rotate in the other direction. By adjusting the distance between the mobile carrier 213 and the screw output end, the relative position between the outer cylinder placed on the rolling clamping mechanism 22 and the screw output end can be adjusted, thereby allowing each outer lock hole in different circumferential directions of the outer cylinder to be close to the screw output end, thereby allowing the key bar 50 to be assembled in different circumferential directions of the outer cylinder.

[0036] In some embodiments, see Figure 1 and Figure 3 The rolling clamping mechanism 22 includes a rolling receiving member 221 , at least two rolling members 222 , a rolling driving member 223 and at least two clamping members 224 .

[0037] The rolling receptacle 221 is mounted on the movable support 213 and has a rolling receptacle space. Two rolling grooves are defined on the side of the rolling receptacle 221 facing away from the movable support 213, connecting the two rolling receptacle spaces. The rolling elements 222 are partially located within the rolling receptacle space and partially located outside the rolling receptacle space via the rolling grooves. Both ends of the rolling elements 222 are rotationally connected to the rolling receptacle 221, and the rolling elements 222 are connected to each other via a belt drive. A rolling driver 223 is located within the rolling receptacle space. The power output shaft of the rolling driver 223 is in transmission connection with at least one rolling element 222, driving the rotation of the rolling elements 222. Clamping elements 224 are mounted on the rolling receptacle 221 and are located on either side of the rolling receptacle 221.

[0038] The rolling drive member 223 is used to drive the rolling members 222 to rotate so as to rotate the outer cylinder that is in contact with and located between the two rolling members 222 . The two clamping members 224 are used to simultaneously approach and contact the outer cylinder between the two rolling members 222 to clamp the outer cylinder.

[0039] It can be understood that the rolling accommodating member 221 serves as the main frame of the rolling clamping mechanism 22, is fixed on the movable supporting member 213, and a rolling accommodating space is formed inside for installing the rolling member 222 and the rolling driving member 223, and the rolling member 222 is partially exposed through the rolling groove to contact the outer cylinder. For example, the rolling accommodating member 221 can be an aluminum shell, a copper shell, etc., but is not limited to this. The roller 222 is a cylindrical structure that rotates synchronously via a belt drive, supporting the outer cylinder and causing it to rotate along its central axis through friction. The outer cylinder can be placed between two rollers 222 and simultaneously contact at least two of them. The distance and height between the outer cylinders can be adjusted by the user based on the diameter of the outer cylinder before operation to ensure that the outer cylinder can simultaneously contact at least two rollers 222. The transmission connection between the outer cylinders can be, but is not limited to, a gear drive connection or a belt drive connection. The surface of the roller 222 can be knurled or coated with a rubber layer to increase friction. For example, the roller 222 can be a rubber wheel or a roller assembly, but is not limited to such. The rolling drive 223 is a drive device capable of driving at least one rolling element 222 to rotate, thereby driving the outer cylinder to rotate. For example, the rolling drive 223 can be a servo motor, a stepper motor, etc., but is not limited to such. The clamping member 224 is a device that can be symmetrically arranged on both sides of the rolling receiving member 221, and is used to simultaneously approach and contact the outer cylinder to achieve clamping and fixation of the outer cylinder to prevent shaking during assembly. The height of the clamping member 224 is adjusted by the user according to the diameter of the outer cylinder. The rolling member 222 can be located between at least two clamping members 224. For example, the clamping member 224 can be a pneumatic clamp, an electric clamping cylinder, etc., but is not limited to this.

[0040] With this arrangement, when assembling the outer cylinder with the key bar 50, the outer cylinder is placed between at least two rolling elements 222, contacting both rolling elements 222 simultaneously. The clamping element 224 then approaches and contacts the outer cylinder's circumference to secure it. The movable drive mechanism 211 then drives the movable carrier 213 to move, driving the rolling receiving element 221 to move the outer cylinder toward the screw output end. As the outer cylinder moves and the screw output end approaches the outer cylinder, the clamping element 224 simultaneously approaches and contacts the outer cylinder's circumference to secure it, preventing it from shifting during movement and assembly. When the outer cylinder needs to be rotated for adjustment, the clamping element 224 is no longer in contact with the outer cylinder, and the rolling drive element 223 rotates the rolling elements 222, driving the outer cylinder. This rotation of the rolling elements 222 by the rolling drive element 223 allows each outer lock hole in the same circumferential direction of the outer cylinder to approach the screw output end, allowing the key bar 50 to be assembled at different positions along the same circumferential direction of the outer cylinder.

[0041] In some embodiments, see Figure 1 and Figure 4 The conveying mechanism 31 includes a height adjustment mechanism 311 and a key bar conveying portion 312 .

[0042] A height adjustment mechanism 311 is provided on the support portion 10 and can adjust its own height. A key bar conveying unit 312 is provided on the height adjustment mechanism 311 and has a key bar output end 34. The key bar conveying unit 312 is used to move the key bar 50 from the key bar input end 33 to the key bar output end 34.

[0043] The height adjustment mechanism 311 is used to change its own height so that the key bar conveying portion 312 moves closer to or farther from the supporting portion 10 .

[0044] It is understood that the height adjustment mechanism 311 is a device that can adjust its own height to drive the key bar conveying portion 312 toward or away from the support portion 10. The height adjustment mechanism 311 can be located on the side of the support portion 10 away from the outer cylinder fixing portion 20. For example, the height adjustment mechanism 311 can be a screw lift assembly, a pneumatic lift cylinder, etc., but is not limited to such. The key bar conveying portion 312 is a device that can transport the key bar 50 from the key bar input end 33 to the key bar output end 34. The height of the key bar output end 34 is dynamically adjusted according to the height of the height adjustment mechanism 311. For example, the key bar conveying portion 312 can be a linear feeder, a conveyor belt conveyor line, etc., but is not limited to such.

[0045] With such a configuration, before the outer cylinder and the key bar 50 are assembled, the user can change the height of the key bar output end 34 by adjusting the height of the height adjustment mechanism 311, thereby ensuring that the key bar 50 does not come into contact with the outer cylinder in the process of moving from the input end to the key bar output end 34, and making the key bar output end 34 as close to the screw output end as possible, thereby reducing the displacement distance of the key bar 50 when the outer cylinder and the key bar 50 are assembled to ensure the accuracy and stability of the assembly.

[0046] In some embodiments, see Figure 1 and Figure 4 The height adjustment mechanism 311 includes two first support members 3111 , a second support member 3112 and a plurality of locking members 3113 .

[0047] Two first support members 3111 are respectively mounted on the support portion 10. The first support members 3111 are provided with a plurality of support grooves extending perpendicularly to the contact surface between the support portion 10 and the first support members 3111. A second support member 3112 is movably mounted on the first support member 3111 along the support grooves and positioned between the two first support members 3111. The second support member 3112 is provided with a plurality of support holes, each corresponding to a respective support groove. Multiple locking members 3113 secure the first support member 3111 to the second support member 3112 via the support grooves and support holes.

[0048] It is understood that the first support member 3111 can be an L-shaped bracket, a column structure, etc., but is not limited to these. The second support member 3112 spans between the two first support members 3111, and the height position is adjusted by the support holes corresponding to the support slots. Its top surface is used to install the key bar conveying part 312. For example, the second support member 3112 can be a beam structure, an adjustable connecting plate, etc., but is not limited to these. The locking member 3113 serves as a fixed connection member between the first support member 3111 and the second support member 3112. By passing through the support slots and support holes, the second support member 3112 is locked at the target height position and fixed to the two first support members 3111 at the same time. For example, the locking member 3113 can include a bolt and a nut. The bolt passes through the support slots and support holes and is locked with the nut, thereby fixing the second support member 3112 to the two first support members 3111.

[0049] In some embodiments, see Figure 4 and Figure 5 Two matching grooves are opened on the key bar 50 along the moving direction of the key bar 50 from the key bar input end 33 to the key bar output end 34, and the key bar conveying part 312 includes a conveying rod 3121, a driving wheel 3122, a driven wheel 3123, a conveying drive member 3124 and two conveying belts 3125.

[0050] The conveying rod 3121 is disposed on the height adjustment mechanism 311, and an ejection slot is defined at the end of the conveying rod 3121 away from the height adjustment mechanism 311. A driving pulley 3122 is rotatably disposed on the side of the conveying rod 3121 near the height adjustment mechanism 311. A driven pulley 3123 is positioned within the ejection slot and rotatably disposed on the side of the conveying rod 3121 away from the height adjustment mechanism 311. A conveying drive 3124 is disposed on the conveying rod 3121, and a power output shaft of the conveying drive 3124 is connected to the driving pulley 3122. The driving pulley 3122 and the driven pulley 3123 are connected in a transmission manner via two conveyor belts 3125. The ends of the two conveyor belts 3125 near the driving pulley 3122 have a key input end 33, and the ends of the two conveyor belts 3125 near the driven pulley 3123 have a key output end 34.

[0051] Among them, the two matching grooves are respectively matched with the two conveyor belts 3125, and the conveyor belt 3125 can be partially located in the matching groove. The conveying drive member 3124 is used to drive the driving wheel 3122 to rotate, and then drive the driven wheel 3123 connected to the driving wheel 3122 through the conveyor belt 3125 to rotate, so that the key bar 50 placed on the conveyor belt 3125 and matched with the conveyor belt 3125 through the matching groove moves from the key bar input end 33 to the key bar output end 34. The fixing mechanism 32 is arranged on the conveying rod 3121 and is located in the ejection groove, and is located between the driving wheel 3122 and the driven wheel 3123.

[0052] It is understood that the conveying rod 3121 is a rod-shaped structure. For example, the conveying rod 3121 can be an aluminum alloy rod, a steel rod, etc., but is not limited to such. The cross-sectional shape of the conveying rod 3121 can be rectangular, circular, etc., but is not limited to such. The driving wheel 3122 is a wheel. The contact surface between the driving wheel 3122 and the conveyor belt 3125 can be provided with multiple anti-skid grooves along the circumference of the driving wheel 3122 to prevent the conveyor belt 3125 from deflecting. For example, the driving wheel 3122 can be a rubber wheel, a plastic wheel, etc., but is not limited to such. The driven wheel 3123 is a wheel. The contact surface between the driven wheel 3123 and the conveyor belt 3125 can be provided with multiple anti-skid grooves along the circumference of the driven wheel 3123 to prevent the conveyor belt 3125 from deflecting. The rotation axis of the driven wheel 3123 is parallel to the rotation axis of the driving wheel 3122. For example, the driven wheel 3123 can be a rubber wheel, a plastic wheel, etc., but is not limited to such. The conveying drive member 3124 is a driving device that can drive the driving wheel 3122 to rotate. For example, the conveying drive member 3124 can be a servo motor, a stepper motor, etc., but is not limited to this. The conveyor belts 3125 are arranged in pairs and simultaneously connect the driving wheel 3122 and the driven wheel 3123. By engaging with the matching grooves on the key bar 50, respectively, the key bar 50 can be stably conveyed. The inner side of the conveyor belt 3125 can be provided with a protrusion or a tooth-like structure corresponding to the matching groove, so that the conveyor belt 3125 is embedded in the matching grooves on both sides of the key bar 50 to prevent the key bar 50 from shifting laterally during the conveying process. For example, the conveyor belt 3125 can be a rubber belt, a steel belt, etc., but is not limited to this. The distance between the two conveyor belts 3125 can be manually adjusted to ensure that the two conveyor belts 3125 can engage with the two matching grooves on the key bars 50 of different specifications.

[0053] With such arrangement, when the key bar 50 needs to be conveyed to the key bar output end 34, the key bar 50 can be placed on the key bar input end 33 formed by the two conveyor belts 3125 by manual or automatic loading, and the two matching grooves are respectively engaged with the two conveyor belts 3125 (the bottom surface of the matching groove is in contact with the surface of the conveyor belt 3125), and then the conveying drive member 3124 drives the driving wheel 3122 to rotate, thereby driving the conveyor belt 3125 and the driven wheel 3123 to rotate, and then drives the key bar 50 to move toward the key bar output end 34. When the key bar 50 moves to the key bar output end 34 (the method for confirming whether the key bar 50 has moved to the key bar output end 34 can be determined by a sensor arranged in the ejection groove and communicated with the conveying drive 3124, or by a camera arranged on the conveying rod 3121 and communicated with the conveying drive 3124 through image processing, etc., but not limited to this), the conveying drive 3124 stops driving the driving wheel 3122 to rotate so that the key bar 50 stays at the key bar output end 34.

[0054] In some embodiments, see Figure 5An adjustment slot is provided on one side of the conveying rod 3121 close to the driven wheel 3123 , and the fixing mechanism 32 includes a fixed driving member 321 , an ejecting member 322 and a blocking member 323 .

[0055] The fixed drive member 321 is located within the ejection slot, away from the driven wheel 3123, and is mounted on the conveying rod 3121. The ejection member 322 is mounted on the power output shaft of the fixed drive member 321, with the key bar output end 34 located directly above the ejection member 322. The ejection member 322 is configured to abut the key bar 50 between the two conveyor belts 3125 or from both sides of the two conveyor belts 3125. The blocking member 323 is located within the ejection slot, between the driven wheel 3123 and the fixed drive member 321, and is movably mounted on the conveying rod 3121 along the adjustment slot. The blocking member 323 is configured to abut the key bar 50 between the two conveyor belts 3125 or from both sides of the two conveyor belts 3125, thereby preventing the key bar 50 from contacting the driven wheel 3123.

[0056] The fixed driving member 321 is used to drive the ejecting member 322 to approach the key bar output end 34 so as to make the key bar 50 located on the key bar output end 34 come into contact with the outer cylinder.

[0057] It can be understood that the fixed driving member 321 is a driving device that can drive the ejector 322 to move. The power output shaft of the fixed driving member 321 will not come into contact with the conveyor belt 3125 during the process of driving the ejector 322 to move. For example, the fixed driving member 321 can be a pneumatic cylinder, an electric push rod, etc., but is not limited to this. The ejector 322 is a device that can push the key bar 50 upward (opposite to the direction of gravity) to make the key bar 50 fit tightly against the inner wall of the outer cylinder. For example, when the ejector 322 is to push the key bar 50 between the two conveyor belts 3125, the ejector 322 can be a rectangular block structure (the width can be 1mm smaller than the distance between the two conveyor belts 3125 so that the ejector 322 does not come into contact with the conveyor belt 3125 during the movement). When both sides of the key bar 3125 contact the key bar 50, the ejector 322 may include a base plate (aluminum plate, plastic plate, etc.) and two side plates (aluminum plate, plastic plate, etc.). The base plate may be mounted on the power output end of the fixed drive member 321. The side plates may be mounted perpendicular to the base plate and located at either end of the base plate. The distance between the two side plates is greater than the distance between the two conveyor belts 3125. This ensures that when the fixed drive member 321 drives the base plate to move, causing the side plates to contact the key bar 50, the side plates do not contact the conveyor belts 3125. When the fixed drive member 321 drives the ejector 322 toward the key bar output end 34, causing the key bar 50 located thereon to contact the outer cylinder, the distance the ejector 322 moves is less than the vertical distance between the ejector 322 and the conveyor belt 3125 along the direction of gravity (when the key bar 50 contacts the outer cylinder, the ejector 322 does not contact the conveyor belt 3125). The blocking member 323 is a device that can be adjusted along the adjustment slot, preventing the key bar 50 from further movement and contacting the driven wheel 3123, while also assisting in positioning the key bar 50. The blocking member 323 does not come into contact with the conveyor belt 3125. For example, the blocking member 323 may include a T-shaped slider (matching the cross-section of the adjustment slot) with an adjustment screw mounted on its side. Rotating the adjustment screw allows the blocking member 323 to move back and forth along the adjustment slot to accommodate the end positioning of key bars 50 of varying lengths. When the key bar 50 is in contact with the blocking member 323 (the key bar 50 is located at the key bar output end 34), the outer and inner locking holes are coaxial.

[0058] In this arrangement, when the key bar 50 located on the key bar output end 34 needs to be brought into contact with the inner wall of the outer tube, the driving wheel 3122 stops rotating to keep the key bar 50 located on the key bar output end 34 stable, and then the fixed driving member 321 drives the ejection member 322 close to the key bar output end 34 to lift the key bar 50 located on the key bar output end 34, and continues to drive the key bar 50 close to the inner wall of the outer tube until the key bar 50 is in contact with the inner wall of the outer tube, and the inner lock hole is connected to the outer lock hole, and the inner expansion groove is connected to the outer expansion groove.

[0059] In some embodiments, see Figure 6 The outer cylinder is provided with multiple external expansion grooves and multiple external locking holes, each external expansion groove corresponds to at least one external locking hole, and at least one external locking hole is located next to the external expansion groove. The key strip 50 includes a resistance member 51, at least one elastic member 52, a movable member 53 and an expansion member 54.

[0060] The resisting member 51 is provided with an inner expansion groove and at least one inner locking hole. The inner expansion groove corresponds to the outer expansion groove, and the inner locking hole corresponds to the outer locking hole. The ends of the elastic member 52 are connected to the resisting member 51 and the movable member 53, respectively. An expansion member 54 is disposed on the side of the movable member 53 near the upper resisting member 51, movable along the depth direction of the inner expansion groove.

[0061] Among them, two matching grooves are opened on the side of the resistance member 51 close to the movable member 53, and the expansion member 54 is used to move to the outside of the outer cylinder through the inner expansion groove and the outer expansion groove to clamp the material when the resistance member 51 and the outer cylinder are in conflict. The combination part 40 is used to assemble the outer cylinder and the resistance member 51 through the outer lock hole and the inner lock hole when the resistance member 51 and the outer cylinder are in conflict through the screw output end and the inner lock hole is connected to the corresponding outer lock hole. The fixed driving member 321 is used to drive the ejection member 322 close to the key bar output end 34 to make the resistance member 51 located on the key bar output end 34 conflict with the outer cylinder.

[0062] As will be appreciated, multiple external expansion grooves are evenly distributed along the circumference of the outer cylinder, allowing the expansion member 54 to move through the external expansion grooves to the exterior of the outer cylinder and contact the material to clamp it. External locking holes are provided corresponding to the external expansion grooves. After the external locking holes are aligned with the internal locking holes, the outer cylinder and key bar 50 are fixed together using connecting members such as screws or pins output from the screw output end. The contact member 51 can be made of, but is not limited to, an aluminum plate, a plastic plate, or the like. The side of the contact member 51 near the screw output end can be arc-shaped to conform to the inner wall of the outer cylinder to increase the contact area between the contact member 51 and the outer cylinder. The internal expansion grooves match the external expansion grooves of the outer cylinder in shape and size to ensure smooth extension of the expansion member 54. The internal locking holes are coaxial with the external locking holes and provide securement during assembly. The elastic member 52 can be a compression spring, a rubber elastomer, or the like, with its ends connecting the contact member 51 and the movable member 53, respectively, to provide elastic cushioning and a restoring force. The movable member 53 is a plate-like structure, for example, aluminum or plastic, but not limited to such. The expansion member 54 is a wedge-shaped block or stepped boss that can move along the depth of the inner expansion slot. The side of the expansion member 54 near the screw output end may have rubber ridges to increase friction between the expansion member 54 and the material. The expansion member 54 and the movable member 53 do not come into contact with the conveyor belt 3125 during movement. The elastic member 52, when not compressed, can push the movable member 53 to prevent the expansion member 54 from protruding from the inner expansion slot.

[0063] With this arrangement, when the key bar 50 needs to be assembled with the outer cylinder, the fixed drive member 321 drives the ejector member 322 toward and into contact with the contact member 51 located on the key bar output end 34. This then drives the contact member 51 away from the key bar output end 34 in the direction opposite to the direction of gravity, into contact with the inner wall of the outer cylinder, thereby connecting the outer expansion groove with the inner expansion groove and simultaneously connecting the outer lock hole with the inner lock hole. The assembly unit 40 then drives the screw output end to move toward the outer lock hole corresponding to the outer expansion groove, causing the screw output from the screw output end to contact the outer lock hole. The screw is then rotated to secure the contact member 51 to the outer cylinder, thereby completing the assembly of the key bar 50 with the outer cylinder. After one key bar 50 is assembled with the outer cylinder, the fixed drive member 321 drives the ejector member 322 away from the screw output end and to move below the key bar output end 34, allowing the other key bar 50 to move to the key bar output end 34.

[0064] The present application also provides an assembly method of an inflatable shaft assembly device 100, which is applicable to the inflatable shaft assembly device 100 of any of the above embodiments. The method includes: The outer cylinder is placed on the rolling clamping mechanism 22. After the rolling clamping mechanism 22 clamps the outer cylinder, the moving mechanism 21 drives the outer cylinder close to the screw output end and makes at least one outer expansion groove close to the screw output end. Then, the rolling clamping mechanism 22 loosens the outer cylinder and drives the outer cylinder to roll so that the distance between at least one outer lock hole and the screw output end is the shortest and the outer cylinder is located between the combination part 40 and the key bar output end 34. Then, the rolling clamping mechanism 22 clamps the outer cylinder again. The key bar 50 is placed on the key bar input end 33 and transported to the key bar output end 34 by the transport mechanism 31 so that the inner expansion groove is located directly below the outer expansion groove and the inner lock hole is located directly below the outer lock hole. Then, the fixing mechanism 32 approaches and contacts the key bar 50 on the key bar output end 34 so that the key bar 50 contacts the outer cylinder and the inner expansion groove is connected to the outer expansion groove and the inner lock hole is connected to the outer lock hole. The combination part 40 drives the screw output end close to the outer cylinder to assemble the outer cylinder and the key bar 50 that conflicts with the outer cylinder through the connected inner lock hole and outer lock hole. Then the rolling clamping mechanism 22 loosens the outer cylinder and drives the outer cylinder to roll so that the distance between the other outer lock hole that is not assembled with the key bar 50 and the screw output end is the shortest and is located between the combination part 40 and the key bar output end 34 in the circumferential direction of the outer cylinder is repeated. The above steps are repeated by analogy until all the outer lock holes in the same circumferential direction of the outer cylinder are assembled with the key bar 50. The moving mechanism 21 drives the rolling clamping mechanism 22 to move so that the distance between the outer lock hole in another circumferential direction of the outer cylinder that is not assembled with the key bar 50 and the screw output end is the shortest. The above steps are repeated by analogy until all the outer lock holes in all circumferential directions of the outer cylinder are assembled with the key bar 50. The moving mechanism 21 drives the rolling clamping mechanism 22 away from the combination part 40. The rolling clamping mechanism 22 loosens the outer cylinder to facilitate the removal of the outer cylinder.

[0065] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An inflatable shaft assembly device for assembling an outer cylinder with a key bar, characterized in that: include: Support part; An outer cylinder fixing portion is provided on the supporting portion, the fixing portion includes a moving mechanism and a rolling clamping mechanism, the moving mechanism is provided on the supporting portion, the rolling clamping mechanism is provided on the moving mechanism, and the rolling clamping mechanism is used to roll or clamp the outer cylinder; A key bar fixing portion is provided on the support portion, the key bar fixing portion comprising a conveying mechanism and a fixing mechanism, the conveying mechanism being provided on the support portion, the fixing mechanism being provided on a side of the conveying mechanism away from the outer tube fixing portion, the conveying mechanism being used to convey the key bar from the key bar input end to the key bar output end, the fixing mechanism being used to approach and abut against the key bar located at the key bar output end so that the key bar abuts against the outer tube; as well as a combining portion, disposed on the supporting portion, having a screw output end, and configured to drive the screw output end close to the outer cylinder to assemble the outer cylinder and the key bar in conflict with the outer cylinder; The moving mechanism is used to drive the rolling clamping mechanism to move closer to or away from the screw output end, and the key bar output end is located directly below the screw output end and directly above the fixing mechanism and between the outer cylinder and the fixing mechanism.

2. The pneumatic shaft assembly device according to claim 1, characterized in that: The moving mechanism comprises: A mobile driving mechanism is provided on the supporting portion; a guide support member, disposed on the support portion; and A movable bearing member is provided on the movable driving mechanism, wherein a side of the movable bearing member away from the movable driving mechanism has a movable groove, and the movable groove is in concave-convex engagement with the guide support member; Wherein, the rolling clamping mechanism is provided on the movable bearing member, and the movable driving mechanism can drive the movable bearing member to approach or move away from the screw output end along the guide support member.

3. The pneumatic shaft assembly device according to claim 2, characterized in that: The mobile driving mechanism comprises: a transmission accommodating member disposed on the support portion, the transmission accommodating member having a transmission accommodating space, and the transmission accommodating member having transmission connecting grooves connected to the transmission accommodating space on both sides perpendicular to the contact surface between the transmission accommodating member and the support portion; a transmission member located in the transmission accommodating space, with both ends of the transmission member rotatably disposed on the transmission accommodating member, and a length direction of the transmission member being parallel to a length direction of the transmission connecting groove; a mobile driving member, disposed on the transmission accommodating member, wherein a power output shaft of the mobile driving member is connected to the transmission member, and the mobile driving member is used to drive the transmission member to rotate; and a transmission connecting member, partially located in the transmission accommodating space and movably disposed on the transmission member, the transmission connecting member having a transmission hole, the transmission hole being threadedly engaged with the transmission member, and the transmission connecting member being connected to the movable bearing member via the transmission connecting groove; The movable driving member is used to drive the transmission member to rotate and thereby drive the transmission connecting member threadedly engaged with the transmission member to move closer to or away from the screw output end along the transmission member.

4. The pneumatic shaft assembly device according to claim 2, characterized in that: The rolling clamping mechanism comprises: A rolling accommodating member is provided on the movable supporting member, the rolling accommodating member has a rolling accommodating space, and two rolling grooves communicating with the rolling accommodating space are formed on a side of the rolling accommodating member away from the movable supporting member; at least two rolling elements, partially located in the rolling accommodation space and partially located outside the rolling accommodation space through the rolling groove, both ends of the rolling elements being rotatably connected to the rolling accommodation element, and the rolling elements being connected to each other via a belt transmission; a rolling drive member located in the rolling accommodation space, wherein a power output shaft of the rolling drive member is drivingly connected to at least one of the rolling members, and the rolling drive member is used to drive the rolling member to rotate; and At least two clamping members are provided on the rolling receiving member and are respectively located on both sides of the rolling receiving member; The rolling driving member is used to drive the rolling member to rotate so as to rotate the outer cylinder that is in contact with two rolling members and located between the two rolling members at the same time, and the two clamping members are used to simultaneously approach and contact the outer cylinder located between the two rolling members to clamp the outer cylinder.

5. The pneumatic shaft assembly device according to claim 1, characterized in that: The conveying mechanism comprises: a height adjustment mechanism, disposed on the support portion, capable of adjusting its own height; and a key bar conveying portion, disposed on the height adjustment mechanism, the key bar conveying portion having the key bar output end, and used for moving the key bar from the key bar input end to the key bar output end; The height adjustment mechanism is used to change its own height so that the key bar conveying portion is close to or away from the supporting portion.

6. The pneumatic shaft assembly device according to claim 5, characterized in that: The height adjustment mechanism comprises: Two first support members are respectively provided on the support portion, and the first support members are provided with a plurality of support grooves along a direction perpendicular to the contact surface between the support portion and the first support member; a second support member, movably disposed on the first support member along the support groove and located between the two first support members, wherein a plurality of support holes are formed on the second support member, and each of the support holes corresponds to each of the support grooves; and A plurality of locking members are provided, wherein the locking members fix the first support member and the second support member through the support groove and the support hole.

7. The pneumatic shaft assembly device according to claim 5, wherein the key bar is provided with two matching grooves along the direction of movement of the key bar from the key bar input end to the key bar output end, characterized in that: The key strip conveying unit includes: A conveying rod is provided on the height adjustment mechanism, and an ejection groove is provided on one end of the conveying rod away from the height adjustment mechanism; a driving wheel rotatably disposed on a side of the conveying rod close to the height adjustment mechanism; A driven wheel is located in the ejection groove and is rotatably arranged on a side of the conveying rod away from the height adjustment mechanism; a conveying drive member, disposed on the conveying rod, wherein a power output shaft of the conveying drive member is connected to the driving wheel; and Two conveyor belts, the driving wheel and the driven wheel are connected by the two conveyor belts, the ends of the two conveyor belts close to the driving wheel have the key input end, and the ends of the two conveyor belts close to the driven wheel have the key output end; The two matching grooves respectively match the two conveyor belts, and the conveyor belt can be partially located in the matching grooves. The conveying drive member is used to drive the driving wheel to rotate, thereby driving the driven wheel connected to the driving wheel through the conveyor belt to rotate, so that the key bar placed on the conveyor belt and matching the conveyor belt through the matching groove moves from the key bar input end to the key bar output end. The fixing mechanism is arranged on the conveying rod and is located in the ejection groove, and is located between the driving wheel and the driven wheel.

8. The pneumatic shaft assembly device according to claim 7, characterized in that: An adjustment slot is provided on one side of the conveying rod close to the driven wheel, and the fixing mechanism includes: a fixed driving member, located in the ejection groove at a side away from the driven wheel and provided on the conveying rod; an ejector member, disposed on the power output shaft of the fixed driving member, the key bar output end being located directly above the ejector member, the ejector member being used to abut the key bar from between the two conveyor belts or from both sides of the two conveyor belts; and a blocking member located in the ejection groove and between the driven wheel and the fixed driving member, and movably provided on the conveying rod along the adjustment groove, the blocking member being used to abut against the key bar from between the two conveyor belts or from both sides of the two conveyor belts to prevent the key bar from contacting the driven wheel; The fixed driving member is used to drive the ejecting member to approach the key bar output end so as to make the key bar located on the key bar output end come into contact with the outer cylinder.

9. The pneumatic shaft assembly device according to claim 8, characterized in that: The outer cylinder is provided with a plurality of external expansion grooves and a plurality of external locking holes, each of the external expansion grooves corresponds to at least one of the external locking holes, and at least one of the external locking holes is located beside the external expansion groove. The key bar includes: A resisting member, wherein the resisting member is provided with an inner expansion groove and at least one inner locking hole, wherein the inner expansion groove corresponds to the outer expansion groove, and the inner locking hole corresponds to the outer locking hole; at least one elastic member; A movable member, wherein both ends of the elastic member are respectively connected to the resisting member and the movable member; and an expansion member, the expansion member being movably disposed along a depth direction of the inner expansion groove on a side of the movable member close to the abutment member; Wherein, two matching grooves are provided on the side of the resistance member close to the movable member, and the expansion member is used to move to the outside of the outer cylinder through the inner expansion groove and the outer expansion groove to clamp the material when the resistance member and the outer cylinder are in conflict. The combination part is used to assemble the outer cylinder and the resistance member through the outer locking hole and the inner locking hole when the resistance member and the outer cylinder are in conflict through the screw output end and the inner locking hole is connected to the corresponding outer locking hole. The fixed driving member is used to drive the ejection member close to the key bar output end to make the resistance member located on the key bar output end conflict with the outer cylinder.

10. A method for assembling an inflatable shaft assembly device, characterized in that: Applied to the pneumatic shaft assembly device according to any one of claims 1 to 9, the method comprises: The outer cylinder is placed on the rolling clamping mechanism. After the rolling clamping mechanism clamps the outer cylinder, the moving mechanism drives the outer cylinder close to the screw output end and makes at least one outer expansion groove close to the screw output end. Then, the rolling clamping mechanism releases the outer cylinder and drives the outer cylinder to roll so that the distance between at least one outer lock hole and the screw output end is the shortest and the outer cylinder is located between the combination part and the key bar output end. Then, the rolling clamping mechanism clamps the outer cylinder again. The key bar is placed on the key bar input end, and the key bar on the key bar input end is conveyed to the key bar output end by the conveying mechanism, so that the inner expansion groove is located directly below the outer expansion groove, and the inner lock hole is located directly below the outer lock hole. Then, the fixing mechanism approaches and contacts the key bar on the key bar output end so that the key bar contacts the outer cylinder, and the inner expansion groove is connected to the outer expansion groove, and the inner lock hole is connected to the outer lock hole; The outer cylinder is fixed on the outer cylinder with the outer cylinder being fixed with the key bar, and the outer cylinder is moved away from the outer cylinder to move the outer cylinder to the outer cylinder so as to facilitate the removal of the outer cylinder.

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