Laminating drum with automatically adjustable drum diameter

Abstract

Provided in the present disclosure is a laminating drum with an automatically adjustable drum diameter. The laminating drum comprises a main shaft, turnover plate devices, a first adjusting device, a second adjusting device and a driving device, wherein the first adjusting device comprises a lead screw assembly and a plurality of first transmission assemblies, with a first lead screw of the lead screw assembly passing through the main shaft; when a first nut moves, the first transmission assemblies drive the turnover plate devices to move radially along the main shaft; the second adjusting device is movably arranged relative to the main shaft and connected to the plurality of turnover plate devices, and is configured to drive the turnover plate devices to turn upright and retract; and the driving device is connected to the tail end of the main shaft and the tail end of the first lead screw, and is configured to drive the main shaft and the first lead screw to rotate synchronously and drive the first lead screw to rotate relative to the main shaft. The laminating drum with an automatically adjustable drum diameter in the present disclosure has a high degree of automation, a simple and compact structure, low costs and a long service life.

Description

Automatically adjustable fitting drum

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202510314423.9, filed on March 17, 2025, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of triangular adhesive bonding, and more specifically to a bonding drum with an automatically adjustable drum diameter. Background Technology

[0004] Triangular rubber bonding machines are used for bonding triangular rubber to tires, with the bonding drum being the core component. In related technologies, the outer periphery of the front end of the bonding drum's main shaft has multiple flaps arranged at intervals. Inside the front end of the main shaft is a mandrel, which protrudes from the front face of the main shaft and has connecting parts such as hexagonal bosses. Before bonding operations, manual tools such as wrenches or wheel discs are used to connect these connecting parts. The manual tools are operated to rotate the mandrel within the main shaft, driving the flaps to move radially, thereby adjusting the diameter of the bonding drum to match the size of the tire rim. After the diameter is adjusted, the manual tools need to be removed to avoid interference with the rim during operation. However, each diameter adjustment of the bonding drum requires manual installation, operation, and removal of the manual tools, resulting in low efficiency and a low degree of automation. In the context of automation and intelligent systems, manually adjustable bonding drums cannot meet production demands. Meanwhile, the related technologies require multiple spindles to achieve drum diameter adjustment, making the structure of the bonding drum complex. In addition, the flipping device of the bonding drum in the related technologies adopts a sliding groove pair structure, which suffers greater wear during use, resulting in a shorter service life of the bonding drum. Summary of the Invention

[0005] This disclosure aims to at least partially address one of the technical problems in the related art.

[0006] Therefore, embodiments of this disclosure propose a fitting drum with an automatically adjustable drum diameter.

[0007] The automatically adjustable fitting drum of this disclosure includes:

[0008] spindle;

[0009] A flip-plate device, wherein multiple flip-plate devices surround the outer periphery of the head end of the main shaft and are movably connected to the main shaft;

[0010] The first adjusting device includes a lead screw assembly and a plurality of first transmission assemblies. The lead screw assembly includes a first lead screw and a first nut. The first lead screw passes through the main shaft. The first nut is connected to the first lead screw and can move along the first lead screw. One end of the first transmission assembly is pivotally connected to the first nut, and the other end of the first transmission assembly is pivotally connected to the corresponding flap device. Thus, when the first nut moves, the first transmission assembly drives the flap device to move radially along the main shaft.

[0011] A second adjusting device is movably arranged relative to the main shaft and connected to a plurality of the flipping devices, used to drive the flipping devices to flip up and retract.

[0012] A drive device is provided, which is connected to the tail end of the main shaft and the tail end of the first lead screw, for driving the main shaft and the first lead screw to rotate synchronously, and for driving the first lead screw to rotate relative to the main shaft.

[0013] The automatically adjustable drum of this embodiment of the bonding drum is driven by a first adjusting device to move a flipping device radially along the main shaft, and a second adjusting device to flip and retract the flipping device. The first adjusting device includes a first lead screw disposed in the main shaft. Both the first lead screw and the main shaft can be connected to a driving device and rotate under the control of the driving device. Thus, the bonding drum is rotated by the rotation of the main shaft, and the drum diameter of the bonding drum is adjusted by the rotation of the first lead screw. Therefore, the automatically adjustable drum of this embodiment of the bonding drum has a high degree of automation, a simple and compact structure, low cost, and long service life.

[0014] In some embodiments, the second adjusting device includes a telescopic member, a push plate assembly, and a plurality of second transmission assemblies. The telescopic member is disposed on the outer periphery of the main shaft and is telescopic relative to the main shaft. The push plate assembly is sleeved on the outer periphery of the main shaft and connected to the telescopic member to move along the main shaft under the drive of the telescopic member. One end of the second transmission assembly is pivotally connected to the push plate assembly, and the other end of the second transmission assembly is pivotally connected to the corresponding flipping device, so that the second transmission assembly drives the flipping device to flip up and retract when the push plate assembly moves.

[0015] In some embodiments, the driving device includes a first driving member and a second driving member. The first driving member is connected to the tail end of the main shaft and is used to drive the main shaft to rotate. The second driving member is connected to the tail end of the first lead screw and is used to drive the first lead screw to rotate.

[0016] The drive device has a first drive state and a second drive state. In the first drive state, both the first drive member and the second drive member are turned on, causing the main shaft and the first lead screw to rotate synchronously. In the second drive state, the first drive member is stopped, and the second drive member is turned on, so as to drive the first lead screw to rotate relative to the main shaft.

[0017] In some embodiments, the driving device further includes a drive spindle, a drive mandrel, and a rotating air ring assembly. The drive spindle is connected between the main shaft and the first driving member to drive the main shaft to rotate under the drive of the first driving member. The drive mandrel passes through the drive spindle and is connected between the first lead screw and the second driving member to drive the first lead screw to rotate under the drive of the second driving member. The rotating air ring assembly is disposed on the outer periphery of the drive spindle and communicates with a first air passage inside the wall of the drive spindle. The first air passage communicates with a second air passage inside the wall of the main shaft. The telescopic member is a telescopic cylinder that communicates with the second air passage.

[0018] In some embodiments, the drive device further includes a first transmission mechanism and a second transmission mechanism, wherein the first transmission mechanism is connected between the tail end of the drive spindle and the first drive member, the tail end of the drive spindle extends from the tail end of the drive spindle, and the second transmission mechanism is connected between the tail end of the drive spindle and the second drive member.

[0019] In some embodiments, the drive device further includes a housing, the drive spindle, the first drive member and the second drive member are all connected to the housing, and the drive spindle is rotatable about the axial direction of the drive spindle relative to the housing, and the rotating air ring assembly is located inside the housing.

[0020] In some embodiments, the telescopic member includes a cylinder body, a cylinder end cap, and a cylinder retaining ring sleeved on the main shaft. The cylinder body is axially connected between the push plate assembly and the cylinder end cap along the main shaft, and the cylinder retaining ring is radially connected between the cylinder body and the main shaft, dividing the space formed by the cylinder body, the main shaft, the cylinder end cap, and the push plate assembly into a first chamber and a second chamber. At least one of the first chamber and the second chamber is used to receive compressed air to drive the cylinder body and the cylinder end cap to move axially along the main shaft, thereby driving the push plate assembly to move.

[0021] In some embodiments, the automatically adjustable drum further includes a limiting component, which is disposed on the main shaft and connected to the cylinder end cover to limit the extreme position of the cylinder end cover's movement along the main shaft.

[0022] The limiting assembly includes a limiting rod, a first limiting member, and a second limiting member. The limiting rod is disposed on the main shaft, and at least a portion of the limiting rod extends axially along the main shaft and passes through the cylinder end cover. The first limiting member and the second limiting member are spaced apart on the limiting rod axially along the main shaft, and the cylinder end cover is located between the first limiting member and the second limiting member.

[0023] In some embodiments, the lead screw assembly is a ball screw.

[0024] In some embodiments, the automatically adjustable drum further includes a base plate device, which is disposed at the beginning of the main shaft and closes the opening at the beginning of the main shaft. The flip plate device is disposed on the base plate device and is movably disposed along the radial direction of the main shaft.

[0025] In some embodiments, the base plate device includes a base plate body, a slide rail, a first slider, and a guide post. The base plate body is disposed at the beginning of the main shaft and closes the opening at the beginning of the main shaft. The slide rail is disposed on the base plate body and extends radially along the main shaft. There are multiple slide rails, which are arranged at intervals along the circumference of the main shaft. Each slide rail is provided with a corresponding first slider, and the first slider is provided with a guide post arranged parallel to the main shaft.

[0026] The flip-plate device is movably connected to the corresponding first slider, and the other end of the first transmission component is pivotally connected to the corresponding first slider, so that the first slider drives the flip-plate device to move radially along the main shaft under the drive of the first transmission component.

[0027] The pusher assembly includes a pusher body and a second slider. The pusher body is sleeved on the outer periphery of the main shaft and connected to the telescopic member. The second slider is connected to the pusher body and can move radially relative to the pusher body along the main shaft. There are multiple second sliders, which are arranged at intervals along the circumference of the main shaft. One end of the second transmission assembly is pivotally connected to the corresponding second slider. The second slider is sleeved on the corresponding guide post and can move along the guide post under the push of the pusher body. The guide post passes through the pusher body and can move radially relative to the pusher body along the main shaft, so as to drive the second slider to move radially along the main shaft under the action of the first slider.

[0028] In some embodiments, the flip-plate device includes a flip-plate body, a third link, and a fourth link. One end of the flip-plate body is pivotally connected to the first slider, the other end of the flip-plate body is pivotally connected to one end of the third link, the other end of the third link is pivotally connected to one end of the fourth link, the other end of the fourth link is pivotally connected to the first slider, and the middle portion of the fourth link is pivotally connected to the other end of the second transmission assembly.

[0029] The first transmission assembly includes a first connecting rod;

[0030] The second transmission assembly includes a second connecting rod.

[0031] In some embodiments, the automatically adjustable fitting drum further includes a steel ring locking block, and at least a portion of the first slider is provided with the steel ring locking block, which is used to support the steel ring.

[0032] In some embodiments, the first adjusting device further includes a connector and a push ring. The push ring is sleeved on the outer periphery of the main shaft and is movable along the main shaft. The main shaft has an axially extending elongated hole. The connector passes through the elongated hole and is connected between the first nut and the push ring. The connector is movable along the elongated hole, thereby driving the push ring to move under the drive of the first nut. One end of the first transmission assembly is pivotally connected to the push ring.

[0033] In some embodiments, the automatically adjustable fitting drum of this disclosure further includes a steel ring locking block, which is disposed on the base plate device and connected to the first adjustment device. The steel ring locking block is radially movable along the main shaft under the drive of the first adjustment device, and the steel ring locking block is used to support the steel ring. Attached Figure Description

[0034] Figure 1 is a cross-sectional view of a fitting drum with automatically adjustable drum diameter according to an embodiment of the present disclosure;

[0035] Figure 2 is a partially enlarged schematic diagram of the automatically adjustable fitting drum shown in Figure 1;

[0036] Figure 3 is a schematic diagram of a partially adjustable fitting drum, as shown in Figure 2.

[0037] Reference numerals: 1. Main shaft; 2. Flip plate device; 21. Flip plate body; 22. Third connecting rod; 23. Fourth connecting rod; 3. First adjusting device; 31. Lead screw assembly; 311. First lead screw; 312. First nut; 32. First transmission assembly; 33. Connecting part; 34. Push ring; 4. Second adjusting device; 41. Telescopic part; 411. Cylinder body; 412. Cylinder fixing ring; 413. Cylinder end cover; 42. Push plate assembly; 421. Push plate body; 422. Second slider; 43. Second transmission assembly; 5. Drive device; 51. First driving component; 52. Second driving component; 53. Drive main shaft; 54. Drive spindle; 55. Rotary air ring assembly; 56. First transmission mechanism; 57. Second transmission mechanism; 58. Housing; 6. Base plate device; 61. Base plate body; 62. Slide rail; 63. First slider; 64. Guide post; 7. Steel ring locking block; 8. Limiting assembly; 81. Limiting rod; 82. First limiting component; 83. Second limiting component; 9. Adsorption assembly. Detailed Implementation

[0038] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0039] The following description, with reference to Figures 1-3, describes an automatically adjustable fitting drum according to an embodiment of the present disclosure.

[0040] As shown in Figures 1-3, the automatically adjustable drum of this embodiment includes a main shaft 1, a flipping device 2, a first adjusting device 3, a second adjusting device 4, and a driving device 5.

[0041] Multiple flap devices 2 surround the outer periphery of the head end (left end as shown in Figure 1) of the main shaft 1 and are movably connected to the main shaft 1.

[0042] The first adjusting device 3 includes a lead screw assembly 31 and a plurality of first transmission assemblies 32. The lead screw assembly 31 includes a first lead screw 311 and a first nut 312. The first lead screw 311 is coaxially inserted into the main shaft 1. The first nut 312 is connected to the first lead screw 311 and can move along the first lead screw 311 when the first lead screw 311 rotates. One end of the first transmission assembly 32 (the right end as shown in Figure 2) is pivotally connected to the first nut 312, and the other end of the first transmission assembly 32 (the left end as shown in Figure 2) is pivotally connected to the corresponding flip plate device 2. Thus, when the first nut 312 moves, the first transmission assembly 32 drives the flip plate device 2 to move radially along the main shaft 1.

[0043] The second adjustment device 4 is movably arranged relative to the main shaft 1 and connected to multiple flip-plate devices 2, used to drive the flip-plate devices 2 to flip up and retract.

[0044] The drive device 5 connects the tail end of the main shaft 1 and the tail end of the first lead screw 311, and is used to drive the main shaft 1 and the first lead screw 311 to rotate synchronously, and to drive the first lead screw 311 to rotate relative to the main shaft 1. In other words, the drive device 5 can drive the main shaft 1 and the first lead screw 311 to rotate simultaneously, and the main shaft 1 and the first lead screw 311 have no relative angular displacement, and can drive the first lead screw 311 to rotate so that it has a relative angular displacement with the main shaft 1. It can be, but is not limited to, driving the first lead screw 311 to rotate while the main shaft 1 is stationary.

[0045] The automatically adjustable drum of this embodiment of the bonding drum is driven by a first adjusting device to move a flipping device radially along the main shaft, and a second adjusting device to flip and retract the flipping device. The first adjusting device includes a first lead screw located within the main shaft. Both the first lead screw and the main shaft are connected to a driving device and rotate in a controlled manner under the drive of the driving device. This rotation of the main shaft causes the bonding drum to rotate, and the rotation of the first lead screw adjusts the drum diameter. This allows the bonding drum to automatically adjust its diameter under the drive of the driving device, achieving higher adjustment accuracy compared to manual adjustment. Therefore, the automatically adjustable drum of this embodiment of the bonding drum has a high degree of automation, a simple and compact structure, low cost, and a long service life.

[0046] In some embodiments, the second adjustment device 4 includes a telescopic member 41, a push plate assembly 42, and a plurality of second transmission assemblies 43. Specifically, as shown in FIG2, the plurality of second transmission assemblies 43, the push plate assembly 42, and the telescopic member 41 are arranged sequentially from left to right.

[0047] The telescopic component 41 is located on the outer periphery of the main shaft 1; in other words, the telescopic component 41 is an annular ring arranged around the main shaft 1. It is telescopic relative to the main shaft 1 in the left-right direction as shown in Figure 2.

[0048] The push plate assembly 42 is sleeved on the outer periphery of the main shaft 1 and connected to the telescopic member 41. It can be connected to the left end of the telescopic member 41 as shown in Figure 2, so as to move along the main shaft 1 under the drive of the telescopic member 41.

[0049] Multiple second transmission components 43 surround the outer periphery of the main shaft 1. One end of the second transmission component 43 (the right end as shown in Figure 2) is pivotally connected to the push plate assembly 42, and the other end of the second transmission component 43 (the left end as shown in Figure 2) is pivotally connected to the corresponding flipping device 2. Thus, when the push plate assembly 42 moves in the left and right direction, the second transmission component 43 drives the flipping device 2 to flip up and retract.

[0050] The telescopic component is designed as a ring, making the structure of the second adjustment device more compact, which in turn makes the structure of the bonding drum more compact. At the same time, the main shaft guides the telescopic movement of the component, ensuring the stability of the movement of the telescopic component and the push plate assembly, thereby enabling the flipping device to flip and retract stably and ensuring the working accuracy of the bonding drum.

[0051] In some embodiments, the drive device 5 includes a first drive member 51 and a second drive member 52. The first drive member 51 is connected to the tail end of the main shaft 1 (the right end as shown in FIG1) and is used to drive the main shaft 1 to rotate. The second drive member 52 is connected to the tail end of the first lead screw 311 (the right end as shown in FIG1) and is used to drive the first lead screw 311 to rotate.

[0052] The drive unit 5 has a first drive state and a second drive state.

[0053] In the first driving state, both the first driving member 51 and the second driving member 52 are activated, and the main shaft 1 and the first lead screw 311 rotate synchronously. At this time, the main shaft 1 and the first lead screw 311 rotate without relative angular displacement, so that the bonding drum can be rotated in the first driving state, avoiding uncontrolled changes in the drum diameter of the bonding drum when it is rotating.

[0054] In the second driving state, the first driving member 51 stops and the second driving member 52 starts to drive the first lead screw 311 to rotate relative to the main shaft 1. At this time, the main shaft 1 and the first lead screw 311 generate a relative angular displacement to adjust the drum diameter of the fitting drum in the second driving state.

[0055] Thus, the rotation of the bonding drum and the adjustment of the drum diameter are controlled by the cooperation of the first drive component 51 and the second drive component 52.

[0056] It should be noted that since the adjustment of the drum diameter of the fitting drum includes two steps, increasing the drum diameter and decreasing the drum diameter, the first nut 312 needs to be able to move to the left and right along the first lead screw 311. Therefore, the second drive member 52 needs to be able to rotate forward and reverse so as to drive the first lead screw 311 to rotate forward and reverse.

[0057] It is understood that in the second driving state, the first driving member is not limited to being stopped. In some other embodiments, in the second driving state, both the first and second driving members are turned on, but the rotational speeds of the first and second driving members are different, so that the spindle and the first lead screw produce relative angular displacement.

[0058] In some embodiments, the drive device 5 further includes a drive spindle 53, a drive mandrel 54, and a rotating air ring assembly 55. The drive spindle 53 is connected between the spindle 1 and the first drive member 51 to drive the spindle 1 to rotate under the drive of the first drive member 51. The drive mandrel 54 passes through the drive spindle 53 and is connected between the first lead screw 311 and the second drive member 52 to drive the first lead screw 311 to rotate under the drive of the second drive member 52.

[0059] As shown in Figure 1, the main spindle 1, the first lead screw 311, the drive spindle 53, and the drive spindle 54 all extend in the left-right direction, and their central axes are collinear. The drive spindle 54 is coaxially inserted inside the drive spindle 53. The main spindle 1 and the drive spindle 53 are connected sequentially from left to right, and the drive spindle 53 is connected to the first drive member 51 so that it rotates under the drive of the first drive member 51, thereby driving the main spindle 1 to rotate. The first lead screw 311 and the drive spindle 54 are connected sequentially from left to right, and the drive spindle 54 is connected to the second drive member 52 so that it rotates under the drive of the second drive member 52, thereby driving the first lead screw 311 to rotate.

[0060] In some embodiments, the right end of the spindle 1 has a first flange, and the left end of the drive spindle 53 has a second flange. The first flange and the second flange are connected by a connector such as bolts.

[0061] In some embodiments, the right end of the first lead screw 311 is connected to the left end of the drive spindle 54 via a flat end or a spline.

[0062] In some embodiments, the first lead screw 311 is coaxially inserted into the main shaft 1, and first bearings are provided at both ends of the first lead screw 311 to indirectly connect with the main shaft 1, so that the first lead screw 311 can rotate relative to the main shaft 1. In some embodiments, first stop members such as retaining rings are provided at both ends of the first bearing, or first abutment surfaces are formed on at least one of the outer circumferential surface of the first lead screw 311 and the inner circumferential surface of the main shaft 1, so as to limit the position of the first bearing in the left-right direction by the first stop members or the first abutment surfaces, and prevent the first bearing from moving in the left-right direction.

[0063] The drive spindle 54 is coaxially mounted inside the drive spindle 53. Second bearings are provided at both ends of the drive spindle 54 and indirectly connected to the drive spindle 53, allowing the drive spindle 54 to rotate relative to the drive spindle 53. In some embodiments, second stop members, such as retaining rings, are provided at both ends of the second bearing, or second abutment surfaces are formed on at least one of the outer circumferential surface of the drive spindle 54 and the inner circumferential surface of the drive spindle 53, to limit the position of the second bearing in the left-right direction and prevent the second bearing from moving in the left-right direction.

[0064] The rotating air ring assembly 55 is located on the outer periphery of the drive spindle 53 and is connected to the first air passage (not shown in the figure) inside the wall of the drive spindle 53. The first air passage is connected to the second air passage (not shown in the figure) inside the wall of the spindle 1. The telescopic member 41 is a telescopic cylinder connected to the second air passage.

[0065] As shown in Figures 1 and 2, the rotating air ring assembly 55 is disposed on the outer periphery of the drive spindle 53. The rotating air ring assembly 55 has multiple air ring passages. The drive spindle 53 has multiple first air passages extending in the left-right direction inside its wall, and the spindle 1 has multiple second air passages extending in the left-right direction inside its wall. The right end opening of the first air passage is located on the outer peripheral surface of the drive spindle 53 and communicates with the corresponding air ring passage of the rotating air ring assembly 55. The left end opening of the first air passage is located on the left end face of the drive spindle 53, and the right end opening of the second air passage is located on the right end face of the spindle 1. The first flange and the second flange... The discs are connected to align and connect the left end opening of the first air passage and the right end opening of the second air passage one by one. Therefore, the air ring air passage, the first air passage and the second air passage are connected in sequence to form a set of air passages and multiple sets are provided. The left end opening of the second air passage of at least two sets of air passages is located on the outer peripheral surface of the main shaft 1 and is connected to the telescopic member 41. The telescopic member 41 is a telescopic cylinder located on the outer peripheral surface of the main shaft 1. Compressed air is supplied and discharged into the telescopic member 41 through the two sets of air passages, thereby driving the telescopic member 41 to extend and retract, and driving the push plate assembly 42 to move left and right, thereby driving the flipping device 2 to flip up and retract.

[0066] The drive spindle is set to indirectly connect the first drive component to the spindle, and the drive mandrel is set to indirectly connect the second drive component to the first lead screw. This facilitates the installation of the first and second drive components, and also facilitates the setting of the rotating air ring assembly to drive the telescopic component to extend and retract, and makes the structure of the fitting drum compact.

[0067] In some embodiments, the drive device 5 further includes a first transmission mechanism 56 and a second transmission mechanism 57. The first transmission mechanism 56 is connected between the tail end of the drive spindle 53 (the right end of the drive spindle 53 as shown in FIG1) and the first drive member 51. The tail end of the drive spindle 54 (the right end of the drive spindle 54 as shown in FIG1) extends out from the tail end of the drive spindle 53 (the right end of the drive spindle 53 as shown in FIG1). The second transmission mechanism 57 is connected between the tail end of the drive spindle 54 (the right end of the drive spindle 54 as shown in FIG1) and the second drive member 52.

[0068] A first transmission mechanism is provided to indirectly connect the drive spindle and the first drive component. A second transmission mechanism is provided to indirectly connect the drive mandrel and the second drive component, facilitating the installation of the first and second drive components and preventing interference between them. The tail end of the drive mandrel extends from the tail end of the drive spindle to facilitate connection between the drive mandrel and the second transmission mechanism.

[0069] The first driving member 51 and the second driving member 52 may be, but are not limited to, servo motors. The first transmission mechanism 56 and the second transmission mechanism 57 may be, but are not limited to, belt transmission mechanisms. One pulley of the first transmission mechanism 56 is located on the outer periphery of the tail end of the drive spindle 53, and one pulley of the second transmission mechanism 57 is located on the outer periphery of the tail end of the drive spindle 54.

[0070] The first and second transmission mechanisms adopt belt drive mechanisms to achieve high transmission accuracy and control sensitivity. Meanwhile, the first and second drive components use servo motors to facilitate the setting of high-precision encoders to detect angle changes. By cooperating with the lead screw assembly, high-precision drum diameter values ​​can be obtained, enabling the mating drum to have high drum diameter adjustment accuracy and precision.

[0071] In some embodiments, the drive device 5 further includes a housing 58, a drive spindle 53, a first drive member 51 and a second drive member 52 are all connected to the housing 58, and the drive spindle 53 can rotate about the axial direction of the drive spindle 53 relative to the housing 58, and the rotating air ring assembly 55 is located inside the housing 58.

[0072] As shown in Figure 1, the drive spindle 53 passes through the housing 58 in the left-right direction and is indirectly connected to the housing 58 through a third bearing, thereby allowing the drive spindle 53 to rotate relative to the housing 58. The left and right ends of the third bearing are provided with third stop members and / or third stop surfaces formed on either the housing 58 or the drive spindle 53, to restrict the position of the third bearing in the left-right direction and prevent it from moving in that direction.

[0073] The middle part of the drive spindle 53 along the left and right direction is located inside the housing 58 and is provided with a rotating air ring assembly 55, so that the rotating air ring assembly 55 is located inside the housing 58 to prevent pollutants such as dust and particles in the environment outside the housing 58 from entering the rotating air ring assembly 55, the first gap space, the second gap space and the telescopic member 41 and causing friction damage, jamming and other situations.

[0074] The first drive member 51 and the second drive member 52 are also mounted on the housing 58. The housing defines the relative positions of the drive spindle 53, the drive spindle 54, the first drive member 51, and the second drive member 52, thereby ensuring the stability of the positions of the first transmission mechanism 56 and the second transmission mechanism 57 and ensuring the operational stability of the first transmission mechanism 56 and the second transmission mechanism 57.

[0075] In some embodiments, the housings of the first drive member 51 and the second drive member 52 are also disposed inside the housing 58 to avoid contamination from pollutants in the environment outside the housing 58.

[0076] In some embodiments, the housing 58 is provided with a partition to divide the internal space of the housing 58 into an upper space and a lower space. The drive spindle 53 passes through the upper space, and the housings of the first drive member 51 and the second drive member 52 are located in the lower space to avoid mutual interference.

[0077] The housing also protects the first drive component, the second drive component, the drive spindle, and the rotating air ring assembly from damage caused by collisions.

[0078] In some embodiments, the telescopic member 41 may be, but is not limited to, a rodless cylinder.

[0079] In some embodiments, the telescopic member 41 includes a cylinder body 411, a cylinder end cap 413, and a cylinder retaining ring 412 sleeved on the main shaft 1. As shown in FIG2, the cylinder body 411, the cylinder end cap 413, and the cylinder retaining ring 412 are all annular in the left-right direction, and the cylinder body 411 extends a certain distance in the left-right direction. The position of the cylinder retaining ring 412 relative to the main shaft 1 in the left-right direction is fixed. In some embodiments, the right end of the cylinder retaining ring 412 abuts against the fourth stop surface provided on the main shaft 1, the left end of the cylinder retaining ring 412 abuts against the limiting sleeve sleeved on the outer periphery of the main shaft 1, and the left end of the limiting sleeve abuts against the fourth stop member such as a retaining ring provided on the outer periphery of the main shaft 1, thereby restricting the position of the cylinder retaining ring 412. The cylinder body 411 and the cylinder end cap 413 are movable relative to the main shaft 1 in the left-right direction.

[0080] The cylinder body 411 is connected between the push plate assembly 42 and the cylinder end cover 413 along the axial direction of the main shaft (as shown in the left and right direction in Figure 2). The cylinder retaining ring 412 is connected between the inner circumferential surface of the cylinder body 411 and the outer circumferential surface of the main shaft 1 along the radial direction of the main shaft 1. The space formed by the inner circumferential surface of the cylinder body 411, the outer circumferential surface of the main shaft 1, the left end of the cylinder end cover 413 and the right end of the push plate assembly 42 is divided into a first chamber and a second chamber. The first chamber and the second chamber can be, but are not limited to, arranged at intervals along the left and right direction.

[0081] The first chamber is connected to a second air passage of one set of air passages, and the second chamber is connected to a second air passage of another set of air passages. When the first chamber receives compressed air through one set of air passages, the second chamber discharges compressed air through the other set of air passages, increasing the space of the first chamber and decreasing the space of the second chamber. At this time, the cylinder body 411 and cylinder end cover 413 move to the left under the action of air pressure, thereby pushing the pusher assembly 42 to move to the left. When the first chamber discharges compressed air through one set of air passages, the second chamber receives compressed air through the other set of air passages, decreasing the space of the first chamber and increasing the space of the second chamber. At this time, the cylinder body 411 and cylinder end cover 413 move to the right under the action of air pressure, thereby pulling the pusher assembly 42 to move to the right. By supplying and discharging compressed air to the first and second chambers in coordination through the two sets of air passages, the cylinder body 411 and cylinder end cover 413 are driven to move axially along the main shaft 1, realizing the telescopic movement of the telescopic member 41, thereby driving the pusher assembly 42 to move.

[0082] In some embodiments, the automatically adjustable drum of this disclosure further includes a limiting component 8, which is disposed on the main shaft 1 and connected to the cylinder end cover 413 to limit the extreme position of the cylinder end cover 413 moving along the main shaft 1, thereby limiting the extreme position of the push plate assembly 42 moving along the main shaft 1, and further limiting the extreme position of the flipping device 2 flipping and the extreme position of the retraction.

[0083] In some embodiments, the limiting assembly 8 includes a limiting rod 81, a first limiting member 82, and a second limiting member 83. The limiting rod 81 is disposed on the main shaft 1, and at least a portion of the limiting rod 81 extends axially along the main shaft 1 and passes through the cylinder end cover 413. The first limiting member 82 and the second limiting member 83 are spaced apart on the limiting rod 81 axially along the main shaft 1, and the cylinder end cover 413 is located between the first limiting member 82 and the second limiting member 83.

[0084] As shown in Figure 2, the right end of the main shaft 1 has a first flange. The first flange is provided with a limiting rod 81 extending to the left. The limiting rod 81 passes through the outer peripheral end of the cylinder end cover 413 so that the cylinder end cover 413 moves in the left and right directions guided by the limiting rod 81. The limiting rod 81 is provided with a first limiting member 82 and a second limiting member 83 arranged at intervals in the left and right directions. The outer peripheral end of the cylinder end cover 413 is located between the first limiting member 82 and the second limiting member 83. The first limiting member 82 is used to stop the cylinder end cover 413 from moving to the left to form the extreme position of the cylinder end cover 413 moving to the left. The second limiting member 83 is used to stop the cylinder end cover 413 from moving to the right to form the extreme position of the cylinder end cover 413 moving to the right.

[0085] The limiting rod 81 can be, but is not limited to, a threaded rod, and the first limiting member 82 and the second limiting member 83 can be, but is not limited to, nuts that are threadedly connected to the limiting rod 81, so that the first limiting member 82 and the second limiting member 83 can be adjusted along the limiting rod 81, thereby adjusting the limit position of the cylinder end cover 413 in the left and right directions.

[0086] It is understood that in other embodiments, the first limiting member and the second limiting member may also be protrusions provided on the main shaft and capable of extending and retracting from the outer peripheral surface of the main shaft, so as to stop the cylinder end cover by the protrusions, thereby limiting the extreme position of the cylinder end cover in the left and right direction.

[0087] In some embodiments, the lead screw assembly 31 is a ball screw. This is to avoid backlash in the drum diameter adjustment, thereby ensuring high accuracy and precision in drum diameter adjustment for the mating drum.

[0088] In some embodiments of the present disclosure, the automatically adjustable drum further includes a base plate device 6, which is disposed at the beginning of the main shaft 1 and closes the opening at the beginning of the main shaft 1. The flip plate device 2 is disposed on the base plate device 6 in a radially movable manner along the main shaft 1.

[0089] As shown in Figures 1 and 2, the base plate device 6 is located at the left end of the main shaft 1 and closes the opening at the left end of the main shaft 1. In other words, the base plate device 6 covers the left end of the main shaft 1.

[0090] The flip-plate device 2 is movably disposed on the base plate device 6 along the radial direction of the main shaft 1, so that multiple flip-plate devices 2 surround the outer periphery of the head end of the main shaft 1 and are indirectly movably connected to the main shaft 1.

[0091] It is understood that in other embodiments, the base plate device may also be configured to surround the left end of the spindle, with the left end of the spindle being closed, or a cap may be provided at the left end of the spindle to cover the opening at the left end of the spindle.

[0092] In some embodiments, as shown in Figures 2 and 3, the base plate device 6 includes a base plate body 61, a slide rail 62, a first slider 63, and a guide post 64. The base plate body 61 is located at the beginning of the main shaft 1 (the left end of the main shaft 1 as shown in Figure 2) and closes the opening at the beginning of the main shaft 1. The slide rail 62 is located on the right end face of the base plate body 61, or is embedded in the right end of the base plate body 61, and extends radially along the main shaft 1. There are multiple slide rails 62, which are arranged at intervals around the circumference of the main shaft 1. In other words, the multiple slide rails 62 are arranged at intervals around the center line of the main shaft 1, and can be evenly arranged. Each slide rail 62 is provided with a corresponding first slider 63, which can slide along the slide rail 62 on which the first slider 63 is located. The first slider 63 is provided with a guide post 64 arranged parallel to the main shaft 1. Specifically, the first slider 63 is provided with a guide post 64 extending to the right.

[0093] The flip-plate device 2 is movably connected to the corresponding first slider 63. The other end of the first transmission component 32 (the left end of the first transmission component 32 as shown in Figure 2) is pivotally connected to the corresponding first slider 63. Thus, the first slider 63 drives the flip-plate device 2 to move radially along the main shaft 1 under the drive of the first transmission component 32. Specifically, when the first nut 312 moves to the left, the left end of the first transmission component 32 drives the corresponding first slider 63 away from the main shaft 1, thereby driving the flip-plate device 2 away from the main shaft 1 to increase the diameter of the mating drum. When the first nut 312 moves to the right, the left end of the first transmission component 32 drives the corresponding first slider 63 closer to the main shaft 1, thereby driving the flip-plate device 2 closer to the main shaft 1 to reduce the diameter of the mating drum.

[0094] The pusher assembly 42 includes a pusher body 421 and a second slider 422. The pusher body 421 is sleeved on the outer periphery of the main shaft 1 and connected to the telescopic member 41, so as to move left and right along the main shaft 1 under the drive of the telescopic member 41. The second slider 422 is connected to the pusher body 421 and can move radially relative to the pusher body 421 along the main shaft 1. Specifically, the second slider 422 can be disposed on the slide rail at the left end of the pusher body 421, or it can be embedded in the slide groove at the left end of the pusher body 421, or it can be embedded in the slide groove at the left end of the pusher body 421, with the slide groove being arranged radially along the main shaft 1.

[0095] There are multiple second sliders 422, which are arranged at intervals along the circumference of the main shaft 1. In other words, the multiple second sliders 422 are arranged at intervals around the center line of the main shaft 1, which can be a uniform arrangement. At the same time, there are multiple sliding grooves on the push plate body 421, which are arranged at intervals around the center line of the main shaft 1, which can be a uniform arrangement. The second sliders 422 are embedded in the corresponding sliding grooves and can slide along the sliding grooves in which the second sliders 422 are set.

[0096] One end of the second transmission component 43 (the right end of the second transmission component 43 as shown in Figure 2) is pivotally connected to the corresponding second slider 422. The second slider 422 is sleeved on the corresponding guide post 64; in other words, the guide post 64 passes through the corresponding second slider 422. The second slider 422 can move left and right along the guide post 64 under the push of the push plate body 421. The guide post 64 also passes through the push plate body 421 and can move radially relative to the push plate body 421 along the main shaft 1. Specifically, the outer circumferential surface of the push plate body 421 is provided with a strip-shaped hole extending radially along the main shaft 1. The strip-shaped hole penetrates the push plate body 421 in the left and right direction. There are multiple strip-shaped holes, which are arranged at intervals around the center line of the main shaft 1. They can be evenly arranged. The guide post 64 passes through the corresponding strip-shaped hole to drive the second slider 422 to move radially along the main shaft 1 under the drive of the first slider 63.

[0097] Thus, the fit drum can be flipped and retracted by the second adjustment device 4 under different drum diameters adjusted by the first adjustment device 3, while ensuring that the flipping reference point of the flipping device 2 does not change axially when adjusting the drum diameter, thus ensuring the accuracy of the steel ring placement.

[0098] In some embodiments, as shown in Figures 2 and 3, the first transmission assembly 32 includes a first link. The second transmission assembly 43 includes a second link. The flap device 2 includes a flap body 21, a third link 22, and a fourth link 23.

[0099] One end of the flap body 21 (the left end of the flap body 21 as shown in Figure 2) is pivotally connected to the first slider 63, and may be connected, but is not limited to, to the end of the first slider 63 away from the main shaft 1. The other end of the flap body 21 (the right end of the flap body 21 as shown in Figure 2) is pivotally connected to one end of the third link 22 (the left end of the third link 22 as shown in Figure 2), the other end of the third link 22 (the right end of the third link 22 as shown in Figure 2) is pivotally connected to one end of the fourth link 23 (the right end of the fourth link 23 as shown in Figure 2), and the other end of the fourth link 23 (the left end of the fourth link 23 as shown in Figure 2) is pivotally connected to the first slider 63, and may be connected, but is not limited to, to the right end of the first slider 63, and is located between the part of the first slider 63 connected to the flap body 21 and the guide post 64. The middle part of the fourth link 23 along its length is pivotally connected to the other end of the second transmission assembly 43 (the left end of the second transmission assembly 43 as shown in Figure 2).

[0100] The fourth link 23 is driven by the second transmission component 43 to pivot relative to the first slider 63, thereby causing the fourth link 23 to drive the flip plate body 21 to pivot relative to the first slider 63 via the third link 22, achieving flipping and retraction. Meanwhile, the first transmission component 32 has less wear and a longer service life compared to structures with grooves in related technologies. It also reduces wear on the flip plate device 2 during flipping and retraction, improves the fitting accuracy of the flip plate device 2, the fitting accuracy between the flip plate device 2 and the second transmission component 43, and the service life of the contact drum. Furthermore, the flipping reference point of the flip plate device 2 does not change axially when adjusting the drum diameter, ensuring the accuracy of the steel ring placement.

[0101] In some embodiments, the automatically adjustable fitting drum of this disclosure further includes a steel ring locking block 7, which is disposed on the base plate device 6 and connected to the first adjustment device 3. The steel ring locking block 7 is movable radially along the main shaft 1 under the drive of the first adjustment device 3.

[0102] As shown in Figures 2 and 3, at least some of the first sliders 63 are provided with steel ring locking blocks 7. It is possible, but not limited to, that each first slider 63 has a corresponding steel ring locking block 7 at its left end. The steel ring locking block 7 is used to support the steel ring, so that while the first transmission assembly 32 drives the first slider 63 to move to adjust the drum diameter, the steel ring is locked and released at the same time, and the pre-support function is realized.

[0103] In use, the triangular rubber material head can be adsorbed by the adsorption component 9, but is not limited to. The main shaft 1 drives the base plate device 6 to rotate, thereby driving the triangular rubber to wrap around the drum. When rotating once, the material head and tail of the triangular rubber are precisely overlapped to form a cylindrical triangular rubber material ring. Then, the steel ring is placed on the steel ring locking block 7. The first adjusting device 3 drives the first slider 63 to move away from the axis of the main shaft 1 to expand the triangular rubber material ring and clamp the steel wire ring. This allows the steel ring to be clamped on the drum so that the relative position of the steel ring and the drum is accurate. At the same time, the triangular rubber is stretched to a certain extent so that the triangular rubber adheres tightly to the steel ring after being flipped up.

[0104] Therefore, the first adjustment device 3 can adjust the diameter of the bonding drum and drive the pre-support without the need for a separate drive component to implement the pre-support, further improving the automation level of the bonding drum, enabling the steel ring to be integrally formed on the bonding drum, and giving the bonding drum a simple structure.

[0105] In some embodiments, as shown in FIG2, the first adjusting device 3 further includes a connector 33 and a push ring 34. The push ring 34 is sleeved on the outer periphery of the main shaft 1 and can move left and right along the main shaft 1. The wall of the main shaft 1 is provided with an axially extending elongated hole. The connector 33 passes through the elongated hole and is connected between the first nut 312 and the push ring 34. The connector 33 can move left and right along the elongated hole, so that the connector 33 drives the push ring 34 to move left and right under the drive of the first nut 312. One end of the first transmission component 32 (the right end shown in FIG2) is pivotally connected to the push ring 34 so as to drive the first slider 63 to move under the drive of the push ring 34.

[0106] The elongated holes and connectors 33 can be, but are not limited to, at least two correspondingly provided, and are arranged at circumferential intervals along the spindle 1.

[0107] In some embodiments, as shown in FIG3, an adsorption assembly 9 is provided on the side wall of one of the first sliders 63. The adsorption assembly 9 includes an adsorption disk, which may be, but is not limited to, at least two disks arranged axially along the main shaft 1. The adsorption disks are disposed away from the main shaft 1, and the adsorption surface of the adsorption disks away from the main shaft 1 is substantially parallel to the outer wall surface of the retracted flap body 21, for adsorbing and fixing the wound material head. The adsorption assembly 9 is disposed on the first slider 63 and can move with the change of drum diameter.

[0108] The adsorption component 9 is connected to the remaining set of air passages other than the two sets of air passages connected to the telescopic member 41, specifically to the second air passage of the remaining set of air passages, so as to supply and draw air through the remaining set of air passages to achieve the adsorption function.

[0109] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0110] Furthermore, the terms "first" and "second" are used only for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0111] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0112] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0113] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0114] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A fitting drum with automatically adjustable diameter, characterized in that, include: Main spindle (1); Flip-plate device (2), a plurality of the flip-plate devices (2) surround the outer periphery of the head end of the main shaft (1) and are movably connected to the main shaft (1); The first adjustment device (3) includes a lead screw assembly (31) and a plurality of first transmission assemblies (32). The lead screw assembly (31) includes a first lead screw (311) and a first nut (312). The first lead screw (311) passes through the main shaft (1). The first nut (312) is connected to the first lead screw (311) and can move along the first lead screw (311). One end of the first transmission assembly (32) is pivotally connected to the first nut (312). The other end of the first transmission assembly (32) is pivotally connected to the corresponding flip plate device (2). Thus, when the first nut (312) moves, the first transmission assembly (32) drives the flip plate device (2) to move radially along the main shaft (1). The second adjustment device (4) is movably arranged relative to the main shaft (1) and connected to the plurality of the flipping devices (2) for driving the flipping devices (2) to flip up and retract. A drive device (5) is connected to the tail end of the main shaft (1) and the tail end of the first lead screw (311) for driving the main shaft (1) and the first lead screw (311) to rotate synchronously, and for driving the first lead screw (311) to rotate relative to the main shaft (1).

2. The automatically adjustable fitting drum according to claim 1, characterized in that, The second adjustment device (4) includes a telescopic member (41), a push plate assembly (42), and a plurality of second transmission assemblies (43). The telescopic member (41) is located on the outer periphery of the main shaft (1) and is telescopic relative to the main shaft (1). The push plate assembly (42) is sleeved on the outer periphery of the main shaft (1) and connected to the telescopic member (41) so as to move along the main shaft (1) under the drive of the telescopic member (41). One end of the second transmission assembly (43) is pivotally connected to the push plate assembly (42), and the other end of the second transmission assembly (43) is pivotally connected to the corresponding flip plate device (2). Thus, when the push plate assembly (42) moves, the second transmission assembly (43) drives the flip plate device (2) to flip up and retract.

3. The automatically adjustable fitting drum according to claim 2, characterized in that, The drive device (5) includes a first drive member (51) and a second drive member (52). The first drive member (51) is connected to the tail end of the main shaft (1) and is used to drive the main shaft (1) to rotate. The second drive member (52) is connected to the tail end of the first lead screw (311) and is used to drive the first lead screw (311) to rotate. The drive device (5) has a first drive state and a second drive state. In the first drive state, both the first drive member (51) and the second drive member (52) are turned on, and the main shaft (1) and the first lead screw (311) rotate synchronously. In the second drive state, the first drive member (51) stops and the second drive member (52) turns on, so as to drive the first lead screw (311) to rotate relative to the main shaft (1).

4. The automatically adjustable fitting drum according to claim 3, characterized in that, The drive device (5) further includes a drive spindle (53), a drive mandrel (54), and a rotating air ring assembly (55). The drive spindle (53) is connected between the main shaft (1) and the first drive member (51) to drive the main shaft (1) to rotate under the drive of the first drive member (51). The drive mandrel (54) passes through the drive spindle (53) and is connected between the first lead screw (311) and the second drive member (52) to drive the first lead screw (311) to rotate under the drive of the second drive member (52). The rotating air ring assembly (55) is located on the outer periphery of the drive spindle (53) and communicates with the first air passage in the wall of the drive spindle (53). The first air passage communicates with the second air passage in the wall of the main shaft (1). The telescopic member (41) is a telescopic cylinder that communicates with the second air passage.

5. The automatically adjustable fitting drum according to claim 4, characterized in that, The drive device (5) further includes a first transmission mechanism (56) and a second transmission mechanism (57). The first transmission mechanism (56) is connected between the tail end of the drive spindle (53) and the first drive member (51). The tail end of the drive spindle (54) extends from the tail end of the drive spindle (53). The second transmission mechanism (57) is connected between the tail end of the drive spindle (54) and the second drive member (52).

6. The automatically adjustable fitting drum according to claim 5, characterized in that, The drive device (5) further includes a housing (58), the drive spindle (53), the first drive member (51) and the second drive member (52) are all connected to the housing (58), and the drive spindle (53) can rotate about the axis of the drive spindle (53) relative to the housing (58), and the rotating air ring assembly (55) is located inside the housing (58).

7. The automatically adjustable fitting drum according to any one of claims 2 to 6, characterized in that, The telescopic component (41) includes a cylinder body (411), a cylinder end cap (413), and a cylinder retaining ring (412) sleeved on the main shaft (1). The cylinder body (411) is axially connected between the push plate assembly (42) and the cylinder end cap (413) along the main shaft. The cylinder retaining ring (412) is radially connected between the cylinder body (411) and the main shaft (1) along the main shaft, and divides the space formed by the cylinder body (411), the main shaft (1), the cylinder end cap (413), and the push plate assembly (42) into a first chamber and a second chamber. At least one of the first chamber and the second chamber is used to receive compressed air to drive the cylinder body (411) and the cylinder end cap (413) to move axially along the main shaft (1), thereby driving the push plate assembly (42) to move.

8. The automatically adjustable fitting drum according to claim 7, characterized in that, It also includes a limiting component (8), which is disposed on the main shaft (1) and connected to the cylinder end cover (413) to limit the extreme position of the cylinder end cover (413) moving along the main shaft (1); The limiting assembly (8) includes a limiting rod (81), a first limiting member (82), and a second limiting member (83). The limiting rod (81) is disposed on the main shaft (1). At least a portion of the limiting rod (81) extends axially along the main shaft (1) and passes through the cylinder end cover (413). The first limiting member (82) and the second limiting member (83) are spaced apart on the limiting rod (81) axially along the main shaft (1). The cylinder end cover (413) is located between the first limiting member (82) and the second limiting member (83).

9. The automatically adjustable fitting drum according to any one of claims 1 to 8, characterized in that, The lead screw assembly (31) is a ball screw.

10. The automatically adjustable fitting drum according to any one of claims 2 to 9, characterized in that, It also includes a base plate device (6), which is located at the beginning of the main shaft (1) and closes the opening at the beginning of the main shaft (1). The flip plate device (2) is located on the base plate device (6) and can be moved radially along the main shaft (1).

11. The automatically adjustable fitting drum according to claim 10, characterized in that, It also includes a steel ring locking block (7), which is located on the base plate device (6) and connected to the first adjustment device (3). The steel ring locking block (7) is radially movable along the main shaft (1) under the drive of the first adjustment device (3). The steel ring locking block (7) is used to support the steel ring.

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