Laminating drum with automatically adjustable drum diameter

Abstract

The invention provides a laminating drum with the drum diameter capable of being automatically adjusted. The laminating drum comprises a main shaft, a turning plate device, a first adjusting device, a second adjusting device and a driving device, the first adjusting device comprises a lead screw assembly and a plurality of first transmission assemblies, a first lead screw of the lead screw assembly is arranged in the main shaft in a penetrating mode, and the first transmission assemblies drive the turning plate device to move in the radial direction of the main shaft when a first nut moves. The second adjusting device is movably arranged relative to the main shaft, connected with the plate turnover devices and used for driving the plate turnover devices to turn over and retract, and the driving device is connected with the tail end of the main shaft and the tail end of the first lead screw, used for driving the main shaft and the first lead screw to rotate synchronously and used for driving the first lead screw to rotate relative to the main shaft. The laminating drum with the drum diameter capable of being automatically adjusted is high in automation degree, simple and compact in structure, low in cost and long in service life.

Description

Technical Field

[0001] The invention relates to the field of apex adhesive bonding, and in particular to a bonding drum with an automatically adjustable drum diameter. Background Art

[0002] The apex glue laminating machine is used for laminating apex glue on tires, and the laminating drum is the core component of the apex glue laminating forming machine. In the related art, the outer periphery of the front end of the main shaft of the laminating drum is provided with a plurality of flaps arranged at intervals, and the interior of the front end of the main shaft is provided with a core shaft, which is exposed at the front end surface of the main shaft and is provided with a connecting part such as a hexagonal boss. Before the laminating drum is used for laminating operation, the connecting part is connected by a manual tool such as a wrench or a wheel, and the manual tool is manually operated to rotate the core shaft in the main shaft to drive the flap to move radially, thereby adjusting the diameter of the laminating drum so that the diameter of the laminating drum is adapted to the size specification of the steel rim. After the diameter of the laminating drum is adjusted in place, the manual tool needs to be removed to avoid interference with the steel rim during operation. However, the manual tool needs to be manually installed, operated and disassembled each time the diameter of the laminating drum is adjusted, which is inefficient and has a low degree of automation. In the context of automation and intelligence, the laminating drum with manually adjusted drum diameter cannot meet production needs. Meanwhile, in the related art, multiple spindles need to be set up to adjust the drum diameter, and the structure of the bonding drum is complicated. In addition, the flap device of the bonding drum in the related art adopts a slide pair structure, which suffers from greater wear during use, resulting in a shorter service life of the bonding drum. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, an embodiment of the present invention provides a laminating drum with automatically adjustable drum diameter.

[0005] The laminating drum with automatically adjustable drum diameter according to the embodiment of the present invention comprises:

[0006] Spindle;

[0007] A flap device, a plurality of flap devices surround the outer circumference of the head end of the main shaft and are movably connected to the main shaft;

[0008] a first adjusting device, the first adjusting device comprising a screw assembly and a plurality of first transmission assemblies, the screw assembly comprising a first screw and a first nut, the first screw being inserted in the main shaft, the first nut being connected to the first screw and being movable along the first screw, one end of the first transmission assembly being pivotally connected to the first nut, and the other end of the first transmission assembly being pivotally connected to the corresponding flap device, so that the first transmission assembly drives the flap device to move radially along the main shaft when the first nut moves;

[0009] A second adjusting device, the second adjusting device is movably arranged relative to the main shaft and connected to the plurality of flap devices, and is used to drive the flap devices to flip up and retract;

[0010] A driving device is connected to the tail end of the main shaft and the tail end of the first lead screw, and is used to drive the main shaft and the first lead screw to rotate synchronously, and is used to drive the first lead screw to rotate relative to the main shaft.

[0011] The bonding drum with automatically adjustable drum diameter in the embodiment of the present invention drives a flap device to move radially along the main shaft through a first adjusting device, and a second adjusting device drives the flap device to flip and retract, wherein the first adjusting device includes a first screw arranged in the main shaft, and the first screw and the main shaft can be connected to a driving device and rotate in a controlled manner under the drive of the driving device, so that the bonding drum can be rotated by rotating the main shaft, and the drum diameter of the bonding drum can be adjusted by rotating the first screw. Therefore, the bonding drum with automatically adjustable drum diameter in the embodiment of the present invention has a high degree of automation, a simple and compact structure, a low cost, and a long service life.

[0012] In some embodiments, the second adjusting device includes a telescopic member, a push plate assembly and multiple second transmission assemblies. The telescopic member is arranged on the periphery of the main shaft and is retractable relative to the main shaft. The push plate assembly is sleeved on the periphery of the main shaft and is 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 flip plate device, so that the second transmission assembly drives the flip plate device to flip and retract when the push plate assembly moves.

[0013] 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, and the second driving member is connected to the tail end of the first screw, and is used to drive the first screw to rotate;

[0014] The driving device has a first driving state and a second driving state. In the first driving state, the first driving member and the second driving member are both turned on and cause the main shaft and the first screw to rotate synchronously. In the second driving state, the first driving member is stopped and the second driving member is turned on to drive the first screw to rotate relative to the main shaft.

[0015] In some embodiments, the driving device also includes a driving spindle, a driving core shaft and a rotating air ring assembly. The driving spindle is connected between the spindle and the first driving member to drive the spindle to rotate under the drive of the first driving member. The driving core shaft is passed through the driving spindle and connected between the first screw and the second driving member to drive the first screw to rotate under the drive of the second driving member. The rotating air ring assembly is arranged on the outer periphery of the driving spindle and is connected to the first air path in the wall of the driving spindle. The first air path is connected to the second air path in the wall of the spindle. The telescopic member is a telescopic cylinder connected to the second air path.

[0016] In some embodiments, the driving device also includes a first transmission mechanism and a second transmission mechanism, the first transmission mechanism is connected between the tail end of the driving spindle and the first driving member, the tail end of the driving spindle extends from the tail end of the driving spindle, and the second transmission mechanism is connected between the tail end of the driving spindle and the second driving member.

[0017] In some embodiments, the driving device also includes a housing, the driving spindle, the first driving member and the second driving member are all connected to the housing, and the driving spindle can rotate around the axial direction of the driving spindle relative to the housing, and the rotating air ring assembly is located in the housing.

[0018] In some embodiments, the telescopic member includes a cylinder body, a cylinder end cover and a cylinder fixing ring which are sleeved on the main shaft, the cylinder body is connected between the push plate assembly and the cylinder end cover along the axial direction of the main shaft, the cylinder fixing ring is connected between the cylinder body and the main shaft along the radial direction of the main shaft, and divides the space formed by the cylinder body, the main shaft, the cylinder end cover 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 cover to move along the axial direction of the main shaft, thereby driving the push plate assembly to move.

[0019] In some embodiments, the laminating drum with automatically adjustable drum diameter further comprises a limit assembly, which is disposed on the main shaft and connected to the cylinder end cover to limit the limit position of the cylinder end cover moving along the main shaft;

[0020] The limit assembly includes a limit rod, a first limit piece and a second limit piece. The limit rod is arranged on the main shaft. At least a portion of the limit rod extends along the axial direction of the main shaft and is passed through the cylinder end cover. The first limit piece and the second limit piece are arranged on the limit rod at intervals along the axial direction of the main shaft, and the cylinder end cover is located between the first limit piece and the second limit piece.

[0021] In some embodiments, the screw assembly is a ball screw.

[0022] In some embodiments, the bonding drum with automatically adjustable drum diameter also includes a base device, which is arranged at the head end of the main shaft and closes the opening of the head end of the main shaft, and the flap device can be movably arranged on the base device along the radial direction of the main shaft.

[0023] In some embodiments, the base device includes a base body, a slide rail, a first slider and a guide column. The base body is arranged at the head end of the spindle and closes the opening of the head end of the spindle. The slide rail is arranged on the base body and extends radially along the spindle. There are multiple slide rails, and the multiple slide rails are arranged at intervals along the circumference of the spindle. Each of the slide rails is provided with a corresponding first slider, and the first slider is provided with the guide column arranged parallel to the spindle.

[0024] The flap device is movably connected to the corresponding first slider, and the other end of the first transmission assembly is pivotally connected to the corresponding first slider, so that the first slider drives the flap device to move along the radial direction of the main shaft under the drive of the first transmission assembly;

[0025] The push plate assembly includes a push plate body and a second slider, the push plate body is sleeved on the outer circumference of the main shaft and connected to the telescopic member, the second slider is connected to the push plate body and can move radially along the main shaft relative to the push plate body, there are multiple second sliders, and the multiple second sliders 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 column, and can move along the guide column under the push of the push plate body, the guide column is penetrated on the push plate body, and can move radially along the main shaft relative to the push plate body, so as to drive the second slider to move radially along the main shaft under the drive of the first slider.

[0026] In some embodiments, the flap device includes a flap body, a third connecting rod and a fourth connecting rod, one end of the flap body is pivotally connected to the first slider, the other end of the flap body is pivotally connected to one end of the third connecting rod, the other end of the third connecting rod is pivotally connected to one end of the fourth connecting rod, the other end of the fourth connecting rod is pivotally connected to the first slider, and the middle part of the fourth connecting rod is pivotally connected to the other end of the second transmission assembly;

[0027] The first transmission assembly includes a first connecting rod;

[0028] The second transmission assembly includes a second connecting rod.

[0029] In some embodiments, the fitting drum with automatically adjustable drum diameter further includes a steel ring locking block, and at least part of the first sliding block is provided with the steel ring locking block, and the steel ring locking block is used to support the steel ring.

[0030] In some embodiments, the first adjusting device also includes a connecting member and a push ring, wherein the push ring is sleeved on the outer circumference of the main shaft and can move along the main shaft, the main shaft is provided with a long hole extending along the axial direction, the connecting member passes through the long hole and is connected between the first nut and the push ring, and the connecting member can move along the long hole, so that the connecting member drives the push ring to move under the drive of the first nut, and one end of the first transmission assembly is pivotally connected to the push ring.

[0031] In some embodiments, the bonding drum with automatically adjustable drum diameter of an embodiment of the present invention further includes a steel ring locking block, which is arranged on the base plate device and connected to the first adjusting device. The steel ring locking block is movable along the radial direction of the main shaft under the drive of the first adjusting device, and the steel ring locking block is used to support the steel ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 is a cross-sectional view of a laminating drum with automatically adjustable drum diameter according to an embodiment of the present invention;

[0033] Figure 2 yes Figure 1 A partial enlarged schematic diagram of a fitting drum with an automatically adjustable middle drum diameter;

[0034] Figure 3 yes Figure 2 Schematic diagram of a fitted drum in which the diameter of part of the drum can be automatically adjusted.

[0035] Reference numerals:

[0036] 1. Spindle;

[0037] 2. flap device; 21. flap body; 22. third connecting rod; 23. fourth connecting rod;

[0038] 3. First adjusting device; 31. Screw assembly; 311. First screw; 312. First nut; 32. First transmission assembly; 33. Connecting member; 34. Push ring;

[0039] 4. Second adjusting device; 41. Telescopic member; 411. Cylinder body; 412. Cylinder end cover; 413. Cylinder fixing ring; 42. Push plate assembly; 421. Push plate body; 422. Second sliding block; 43. Second transmission assembly;

[0040] 5. driving device; 51. first driving member; 52. second driving member; 53. driving spindle; 54. driving mandrel; 55. rotating air ring assembly; 56. first transmission mechanism; 57. second transmission mechanism; 58. housing;

[0041] 6. base plate device; 61. base plate body; 62. slide rail; 63. first slide block; 64. guide column;

[0042] 7. Steel ring lock block;

[0043] 8. Limiting assembly; 81. Limiting rod; 82. First limiting member; 83. Second limiting member;

[0044] 9. Adsorption components. DETAILED DESCRIPTION

[0045] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0046] Reference below Figure 1-Figure 3 A laminating drum with automatically adjustable drum diameter according to an embodiment of the present invention is described.

[0047] like Figure 1-Figure 3 As shown, the bonding drum with automatically adjustable drum diameter according to the embodiment of the present invention comprises a main shaft 1, a flap device 2, a first adjustment device 3, a second adjustment device 4 and a driving device 5.

[0048] A plurality of flap devices 2 surround the head end of the main shaft 1 (such as Figure 1 The left end shown in the figure) is arranged on the outer periphery and is movably connected with the main shaft 1.

[0049] The first adjusting device 3 includes a screw assembly 31 and a plurality of first transmission assemblies 32. The screw assembly 31 includes a first screw 311 and a first nut 312. The first screw 311 is coaxially arranged in the main shaft 1. The first nut 312 is connected to the first screw 311 and can move along the first screw 311 when the first screw 311 rotates. One end of the first transmission assembly 32 (such as Figure 2 The right end as shown in FIG. 1 is pivotally connected to the first nut 312, and the other end of the first transmission assembly 32 (as shown in FIG. Figure 2 The left end as shown in the figure is pivotally connected to the corresponding flap device 2, so that the first transmission assembly 32 drives the flap device 2 to move radially along the main shaft 1 when the first nut 312 moves.

[0050] The second adjusting device 4 is movably arranged relative to the main shaft 1 and is connected to the plurality of flap devices 2 for driving the flap devices 2 to flip up and retract.

[0051] The driving device 5 is connected to 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 driving device 5 can drive the main shaft 1 and the first lead screw 311 to rotate at the same time, 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 as to have a relative angular displacement with the main shaft 1, preferably but not limited to driving the first lead screw 311 to rotate while the main shaft 1 is stationary.

[0052] The laminating drum with automatically adjustable drum diameter of the embodiment of the present invention drives the flap device to move radially along the main shaft through the first adjusting device, and the flap device is driven to flip and retract by the second adjusting device, wherein the first adjusting device includes a first screw disposed in the main shaft, and the first screw and the main shaft can both be connected to the driving device and rotate in a controlled manner under the drive of the driving device, so that the laminating drum can rotate by rotating the main shaft, and the drum diameter of the laminating drum can be adjusted by rotating the first screw, so that the laminating drum can automatically adjust the drum diameter under the drive of the driving device and has a higher adjustment accuracy than manual adjustment. Therefore, the laminating drum with automatically adjustable drum diameter of the embodiment of the present invention has a high degree of automation, a simple and compact structure, low cost, and a long service life.

[0053] In some embodiments, the second adjusting device 4 includes a telescopic member 41, a push plate assembly 42 and a plurality of second transmission assemblies 43, specifically, as Figure 2 As shown, a plurality of second transmission assemblies 43, push plate assemblies 42 and telescopic members 41 are arranged in sequence from left to right.

[0054] The telescopic member 41 is disposed on the outer periphery of the main shaft 1. In other words, the telescopic member 41 is annular and disposed around the main shaft 1. Figure 2 The left and right directions shown are retractable.

[0055] The push plate assembly 42 is sleeved on the outer periphery of the main shaft 1 and connected to the telescopic member 41, preferably connected to the telescopic member 41 as shown in FIG. Figure 2 The left end shown is connected so as to move along the main shaft 1 under the drive of the telescopic member 41.

[0056] A plurality of second transmission components 43 surround the outer circumference of the main shaft 1, and one end of the second transmission component 43 (such as Figure 2 The right end as shown in FIG. 1 is pivotally connected to the push plate assembly 42, and the other end of the second transmission assembly 43 (as shown in FIG. Figure 2 The left end as shown in the figure is pivotally connected to the corresponding flap device 2, so that the second transmission assembly 43 drives the flap device 2 to flip and retract when the push plate assembly 42 moves in the left and right directions.

[0057] The telescopic member is arranged in a ring shape to make the structure of the second adjustment device more compact, thereby making the structure of the bonding drum more compact. At the same time, the main shaft guides the telescopic movement of the telescopic member, ensuring the stability of the movement of the telescopic member and the push plate assembly, so that the flap device can be stably turned up and retracted, ensuring the operating accuracy of the bonding drum.

[0058] In some embodiments, the driving device 5 includes a first driving member 51 and a second driving member 52. The first driving member 51 is connected to the rear end of the main shaft 1 (such as Figure 1 The second drive member 52 is connected to the tail end of the first lead screw 311 (as shown in the right end) for driving the main shaft 1 to rotate. Figure 1 The right end as shown in the figure) is connected to drive the first lead screw 311 to rotate.

[0059] The driving device 5 has a first driving state and a second driving state.

[0060] In the first driving state, the first driving member 51 and the second driving member 52 are both turned on, 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 to avoid uncontrolled changes in the drum diameter of the bonding drum when the bonding drum is rotating.

[0061] In the second driving state, the first driving member 51 stops and the second driving member 52 starts to drive the first screw 311 to rotate relative to the main shaft 1. At this time, the main shaft 1 and the first screw 311 produce a relative angular displacement to adjust the drum diameter of the fitting drum in the second driving state.

[0062] Therefore, the rotation operation of the bonding drum and the adjustment of the drum diameter are controlled by the cooperation between the first driving member 51 and the second driving member 52 .

[0063] It should be noted that since the drum diameter adjustment of the fitting drum includes two steps of increasing the drum diameter and reducing the drum diameter, the first nut 312 needs to be able to move to the left and right along the first screw 311. Therefore, the second drive member 52 needs to be able to rotate forward and reverse to drive the first screw 311 to rotate forward and reverse.

[0064] It can be understood that in the second driving state, the first driving member is not limited to stopping. In other embodiments, in the second driving state, the first driving member and the second driving member are both turned on, but the rotational speeds of the first driving member and the second driving member are different, so that the main shaft and the first screw produce relative angular displacement.

[0065] In some embodiments, the driving device 5 also includes a driving spindle 53, a driving core shaft 54 ​​and a rotating air ring assembly 55. The driving spindle 53 is connected between the spindle 1 and the first driving member 51 to drive the spindle 1 to rotate under the drive of the first driving member 51. The driving core shaft 54 ​​is inserted into the driving spindle 53 and connected between the first lead screw 311 and the second driving member 52 to drive the first lead screw 311 to rotate under the drive of the second driving member 52.

[0066] like Figure 1 As shown, the main shaft 1, the first lead screw 311, the driving main shaft 53 and the driving mandrel 54 all extend in the left-right direction, and the central axes are collinear. The driving mandrel 54 is coaxially arranged in the driving main shaft 53, and the main shaft 1 and the driving main shaft 53 are connected in sequence from left to right, and the driving main shaft 53 is connected to the first driving member 51, so as to rotate under the drive of the first driving member 51, thereby driving the main shaft 1 to rotate. The first lead screw 311 and the driving mandrel 54 are connected in sequence from left to right, and the driving mandrel 54 is connected to the second driving member 52, so as to rotate under the drive of the second driving member 52, thereby driving the first lead screw 311 to rotate.

[0067] Preferably, the right end of the main shaft 1 has a first flange, the left end of the driving main shaft 53 has a second flange, and the first flange and the second flange are connected by a connecting member such as a bolt.

[0068] Preferably, the right end of the first lead screw 311 is connected to the left end of the driving spindle 54 via a flat mouth or a spline.

[0069] Preferably, the first lead screw 311 is coaxially disposed in the spindle 1, and first bearings are provided at both left and right ends of the first lead screw 311 to be indirectly connected to the spindle 1, so that the first lead screw 311 can rotate relative to the spindle 1. More preferably, first stoppers such as retaining rings are provided at both left and right ends of the first bearing, or first abutment surfaces are formed on at least one of the outer circumference of the first lead screw 311 and the inner circumference of the spindle 1, so as to limit the position of the first bearing in the left-right direction through the first stoppers or the first abutment surfaces, thereby preventing the first bearing from moving in the left-right direction.

[0070] The driving mandrel 54 is coaxially disposed in the driving main shaft 53, and second bearings are provided at both left and right ends of the driving mandrel 54 to be indirectly connected to the driving main shaft 53, so that the driving mandrel 54 can rotate relative to the driving main shaft 53. More preferably, second stoppers such as retaining rings are provided at both left and right ends of the second bearing, or second abutment surfaces are formed on at least one of the outer circumference of the driving mandrel 54 and the inner circumference of the driving main shaft 53, so as to limit the position of the second bearing in the left-right direction through the second stoppers or the second abutment surfaces, and prevent the second bearing from moving in the left-right direction.

[0071] The rotating air ring assembly 55 is arranged on the outer periphery of the driving main shaft 53 and is connected to the first air path (not shown in the figure) in the wall of the driving main shaft 53. The first air path is connected to the second air path (not shown in the figure) in the wall of the main shaft 1. The telescopic part 41 is a telescopic cylinder connected to the second air path.

[0072] like Figure 1 and Figure 2 As shown, the rotating air ring assembly 55 is arranged on the outer periphery of the driving main shaft 53, and the rotating air ring assembly 55 is provided with a plurality of air ring gas paths. A plurality of first air paths extending in the left-right direction are provided in the wall of the driving main shaft 53, and a plurality of second air paths extending in the left-right direction are provided in the wall of the main shaft 1. The right end opening of the first air path is arranged on the outer periphery of the driving main shaft 53 and is connected with the corresponding air ring gas path of the rotating air ring assembly 55. The left end opening of the first air path is arranged on the left end surface of the driving main shaft 53, and the right end opening of the second air path is arranged on the right end surface of the main shaft 1. The first flange is connected to the second flange. The left end opening of the first air circuit and the right end opening of the second air circuit are connected one by one and connected, so that the air ring air circuit, the first air circuit and the second air circuit are connected in sequence into a group of air circuits and multiple groups are provided, wherein the left end opening of the second air circuit of at least two groups of air circuits is arranged on the outer peripheral surface of the main shaft 1 and connected to the telescopic part 41, and the telescopic part 41 is a telescopic cylinder arranged on the outer periphery of the main shaft 1, so that compressed air is cooperatively supplied and discharged into the telescopic part 41 through the two groups of air circuits, thereby driving the telescopic part 41 to extend and retract, and driving the push plate assembly 42 to move left and right, and then driving the flap device 2 to flip and retract.

[0073] A driving main shaft is set to indirectly connect the first driving member to the main shaft, and a driving core shaft is set to indirectly connect the second driving member to the first screw, which is convenient for installing the first driving member and the second driving member. At the same time, it is convenient to set a rotating air ring assembly to drive the telescopic member to telescopically move and make the structure of the bonding drum compact.

[0074] In some embodiments, the driving device 5 further includes a first transmission mechanism 56 and a second transmission mechanism 57. The first transmission mechanism 56 is connected to the rear end of the driving spindle 53 (eg, Figure 1 The rear end of the driving spindle 54 (as shown in FIG. Figure 1 The right end of the driving spindle 54 shown in FIG. 5 is driven by the tail end of the driving spindle 53 (as shown in FIG. Figure 1 The second transmission mechanism 57 is connected to the rear end of the driving spindle 54 (as shown in FIG. Figure 1 between the right end of the drive spindle 54 shown in the figure and the second drive member 52.

[0075] A first transmission mechanism is provided to indirectly connect the driving main shaft and the first driving member, and a second transmission mechanism is provided to indirectly connect the driving mandrel and the second driving member, so as to facilitate the installation of the first driving member and the second driving member and avoid interference between the first driving member and the second driving member. The tail end of the driving mandrel extends from the tail end of the driving main shaft so as to facilitate the connection of the driving mandrel with the second transmission mechanism.

[0076] The first driving member 51 and the second driving member 52 are preferably but not limited to servo motors, the first transmission mechanism 56 and the second transmission mechanism 57 are preferably but not limited to belt transmission mechanisms, a pulley of the first transmission mechanism 56 is arranged on the outer periphery of the tail end of the driving main shaft 53, and a pulley of the second transmission mechanism 57 is arranged on the outer periphery of the tail end of the driving core shaft 54.

[0077] The first transmission mechanism and the second transmission mechanism adopt belt transmission mechanism to have higher transmission accuracy and control sensitivity. At the same time, the first drive member and the second drive member adopt servo motors to facilitate the setting of high-precision encoders to detect angle changes. By cooperating with the screw assembly, high-precision drum diameter values ​​can be obtained, so that the bonding drum has higher drum diameter adjustment accuracy and accuracy.

[0078] In some embodiments, the driving device 5 also includes a box body 58, and the driving spindle 53, the first driving member 51 and the second driving member 52 are all connected to the box body 58, and the driving spindle 53 can rotate around the axial direction of the driving spindle 53 relative to the box body 58, and the rotating air ring assembly 55 is located in the box body 58.

[0079] like Figure 1 As shown, the driving spindle 53 is passed through the box body 58 in the left-right direction and is indirectly connected to the box body 58 through the third bearing, so that the driving spindle 53 can rotate relative to the box body 58. The left and right ends of the third bearing are provided with third stoppers and / or third stop surfaces formed on one of the box body 58 and the driving spindle 53, so as to limit the position of the third bearing in the left-right direction through the third stoppers or the third stop surfaces, and prevent the third bearing from moving in the left-right direction.

[0080] The middle part of the driving main shaft 53 along the left and right direction is located in the box body 58, and is provided with a rotating air ring assembly 55, so that the rotating air ring assembly 55 is located in the box body 58 to prevent pollutants such as dust and particles in the environment outside the box body 58 from entering the rotating air ring assembly 55, the first gap space, the second gap space and the telescopic part 41 to cause friction damage, jamming, etc.

[0081] The first driving member 51 and the second driving member 52 are also arranged on the box body 58. The box body limits the relative positions of the driving main shaft 53, the driving core shaft 54, the first driving member 51 and the second driving member 52 to ensure the position stability of the first transmission mechanism 56 and the second transmission mechanism 57, thereby ensuring the operating stability of the first transmission mechanism 56 and the second transmission mechanism 57.

[0082] Preferably, the housings of the first driving member 51 and the second driving member 52 are also disposed in the box body 58 to avoid being contaminated by pollutants in the environment outside the box body 58 .

[0083] More preferably, a partition is provided in the box body 58 to separate the internal space of the box body 58 into an upper space and a lower space, the driving main shaft 53 is arranged in the upper space, and the shells of the first driving member 51 and the second driving member 52 are arranged in the lower space to avoid mutual influence.

[0084] The box body also protects the first driving member, the second driving member, the driving spindle and the rotating air ring assembly to avoid damage caused by collision.

[0085] In some embodiments, the telescopic member 41 is preferably, but not limited to, a rodless cylinder.

[0086] In some embodiments, the telescopic member 41 includes a cylinder body 411 sleeved on the main shaft 1, a cylinder end cover 413 and a cylinder fixing ring 412. Figure 2 As shown, the cylinder body 411, the cylinder end cover 413 and the cylinder fixing ring 412 are all ring-shaped around the left-right direction, and the cylinder body 411 extends a certain distance in the left-right direction. The cylinder fixing ring 412 is fixed relative to the spindle 1 in the left-right direction. Preferably, the right end of the cylinder fixing ring 412 abuts against the fourth stop surface provided on the spindle 1, the left end of the cylinder fixing ring 412 abuts against the limiting sleeve sleeved on the outer periphery of the spindle 1, and the left end of the limiting sleeve abuts against the fourth stop member such as a snap ring provided on the outer periphery of the spindle 1, thereby limiting the position of the cylinder fixing ring 412. The cylinder body 411 and the cylinder end cover 413 are movable relative to the spindle 1 in the left-right direction.

[0087] The cylinder body 411 is axially oriented along the main shaft (eg Figure 2 The cylinder fixing ring 412 is connected between the inner circumference of the cylinder body 411 and the outer circumference of the main shaft 1 along the radial direction of the main shaft, and separates the space formed by the inner circumference of the cylinder body 411, the outer circumference of the main shaft 1, the left end of the cylinder end cover 413 and the right end of the push plate assembly 42 into a first chamber and a second chamber. The first chamber and the second chamber are preferably but not limited to being arranged at intervals along the left-right direction.

[0088] The first chamber is connected to the second air path of one group of air paths, and the second chamber is connected to the second air path of another group of air paths. When the first chamber receives compressed air through one group of air paths, the second chamber discharges compressed air through another group of air paths, the space of the first chamber increases and the space of the second chamber decreases. At this time, the cylinder body 411 and the cylinder end cover 413 move to the left under the action of air pressure to push the push plate assembly 42 to move to the left. When the first chamber discharges compressed air through one group of air paths, the second chamber receives compressed air through another group of air paths, the space of the first chamber decreases and the space of the second chamber increases. At this time, the cylinder body 411 and the cylinder end cover 413 move to the right under the action of air pressure to pull the push plate assembly 42 to move to the right. The compressed air is supplied and discharged to the first chamber and the second chamber in coordination through two groups of air paths to drive the cylinder body 411 and the cylinder end cover 413 to move along the axial direction of the main shaft 1, so as to realize the telescopic movement of the telescopic member 41, thereby driving the push plate assembly 42 to move.

[0089] In some embodiments, the bonding drum with automatically adjustable drum diameter of the embodiment of the present invention further includes a limit assembly 8, which is disposed on the main shaft 1 and connected to the cylinder end cover 413 to limit the limit position of the cylinder end cover 413 moving along the main shaft 1, thereby limiting the limit position of the push plate assembly 42 moving along the main shaft 1, and further limiting the limit position of the flipping device 2 for flipping up and the limit position of recovery.

[0090] In some embodiments, the limit assembly 8 includes a limit rod 81, a first limit member 82 and a second limit member 83. The limit rod 81 is arranged on the main shaft 1. At least a portion of the limit rod 81 extends along the axial direction of the main shaft 1 and is passed through the cylinder end cover 413. The first limit member 82 and the second limit member 83 are arranged on the limit rod 81 at intervals along the axial direction of the main shaft 1, and the cylinder end cover 413 is located between the first limit member 82 and the second limit member 83.

[0091] like Figure 2 As shown, the right end of the main shaft 1 has a first flange, and the first flange is provided with a limit rod 81 extending to the left. The limit rod 81 is passed through the outer peripheral end of the cylinder end cover 413 so that the cylinder end cover 413 can move in the left and right directions guided by the limit rod 81. The limit rod 81 is provided with a first limit member 82 and a second limit 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 limit member 82 and the second limit member 83. The first limit 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, and the second limit 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.

[0092] The limiting rod 81 is preferably but not limited to a threaded rod, and the first limiting member 82 and the second limiting member 83 are preferably but not limited to nuts threadedly connected to the limiting rod 81, so that the first limiting member 82 and the second limiting member 83 can adjust their positions along the limiting rod 81, thereby adjusting the limit position of the cylinder end cover 413 moving in the left and right directions.

[0093] It can be understood that in other embodiments, the first limit member and the second limit member can also be protruding buttons provided on the main shaft and capable of extending and retracting from the outer circumferential surface of the main shaft, so as to stop the cylinder end cover through the protruding buttons, thereby limiting the extreme position of the cylinder end cover moving in the left and right directions.

[0094] In some embodiments, the screw assembly 31 is a ball screw to avoid travel gaps in drum diameter adjustment, so that the bonding drum has higher drum diameter adjustment precision and accuracy.

[0095] In some embodiments, the bonding drum with automatically adjustable drum diameter of the embodiment of the present invention also includes a base device 6, which is arranged at the head end of the main shaft 1 and closes the opening at the head end of the main shaft 1, and the flap device 2 can be movably arranged on the base device 6 along the radial direction of the main shaft 1.

[0096] like Figure 1 and Figure 2 As shown, the base device 6 is disposed at the left end of the spindle 1 and closes the opening at the left end of the spindle 1 . In other words, the base device 6 cover is disposed at the left end of the spindle 1 .

[0097] The flap device 2 is movably disposed on the base device 6 along the radial direction of the main shaft 1 , so that a plurality of flap devices 2 surround the outer circumference of the head end of the main shaft 1 and are indirectly movably connected to the main shaft 1 .

[0098] It is understandable that in other embodiments, the base disc device can also be arranged to surround the left end of the main shaft, the left end of the main shaft is closed, or a cover is arranged at the left end of the main shaft to cover the opening of the left end of the main shaft.

[0099] In some embodiments, Figure 2 and Figure 3 As shown, the base device 6 includes a base body 61, a slide rail 62, a first slider 63 and a guide column 64. The base body 61 is arranged at the head end of the main shaft 1 (such as Figure 2The left end of the main shaft 1 shown in the figure) and closes the opening at the head end of the main shaft 1. The slide rail 62 is arranged on the right end surface of the base body 61, or is embedded in the right end of the base body 61, and extends radially along the main shaft 1. There are multiple slide rails 62, and the multiple slide rails 62 are arranged at intervals along 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, preferably evenly arranged. Each slide rail 62 is provided with a corresponding first slider 63, and the first slider 63 can slide along the slide rail 62 on which the first slider 63 is provided. The first slider 63 is provided with a guide column 64 arranged parallel to the main shaft 1. Specifically, the first slider 63 is provided with a guide column 64 extending to the right.

[0100] The flap device 2 is movably connected to the corresponding first slider 63, and the other end of the first transmission assembly 32 (such as Figure 2 The left end of the first transmission assembly 32 shown in the figure is pivotally connected to the corresponding first slider 63, so that the first slider 63 drives the flap device 2 to move radially along the main shaft 1 under the drive of the first transmission assembly 32. Specifically, when the first nut 312 moves to the left, the left end of the first transmission assembly 32 drives the corresponding first slider 63 away from the main shaft 1, thereby driving the flap device 2 away from the main shaft 1 to increase the drum diameter of the bonding drum; when the first nut 312 moves to the right, the left end of the first transmission assembly 32 drives the corresponding first slider 63 close to the main shaft 1, thereby driving the flap device 2 close to the main shaft 1 to reduce the drum diameter of the bonding drum.

[0101] The push plate assembly 42 includes a push plate body 421 and a second slider 422. The push plate 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 push plate body 421 and can move radially along the main shaft 1 relative to the push plate body 421. Specifically, the second slider 422 can be set on the slideway at the left end of the push plate body 421, or can be embedded in the slide groove at the left end of the push plate body 421, preferably embedded in the slide groove at the left end of the push plate body 421, and the slide groove is set radially along the main shaft 1.

[0102] 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, preferably evenly. At the same time, there are multiple slide grooves on the push plate body 421, which are arranged at intervals around the center line of the main shaft 1, preferably evenly. The second slider 422 is embedded in the corresponding slide groove and can slide along the slide groove where the second slider 422 is set.

[0103] One end of the second transmission assembly 43 (such as Figure 2The second transmission assembly 43 shown in FIG. 4 is pivotally connected to the corresponding second slider 422, and the second slider 422 is sleeved on the corresponding guide column 64. In other words, the guide column 64 is inserted into the corresponding second slider 422. The second slider 422 can move left and right along the guide column 64 under the push of the push plate body 421. The guide column 64 is also inserted into the push plate body 421, and can move radially along the main shaft 1 relative to the push plate body 421. Specifically, the outer peripheral surface of the push plate body 421 is provided with a strip hole extending radially along the main shaft 1, and the strip hole penetrates the push plate body 421 in the left and right direction. There are multiple strip holes, and the multiple strip holes are arranged at intervals around the center line of the main shaft 1, preferably evenly arranged. The guide column 64 is inserted into the corresponding strip hole to drive the second slider 422 to move radially along the main shaft 1 under the drive of the first slider 63.

[0104] Therefore, the fitting drum can drive the flap device 2 to flip up and retract through the second adjusting device 4 under different drum diameters adjusted by the first adjusting device 3. At the same time, the flipping reference point of the flap device 2 has no axial change when adjusting the drum diameter, thereby ensuring the accuracy of the steel ring placement.

[0105] In some embodiments, Figure 2 and Figure 3 As shown, the first transmission assembly 32 includes a first connecting rod. The second transmission assembly 43 includes a second connecting rod. The flap device 2 includes a flap body 21, a third connecting rod 22 and a fourth connecting rod 23.

[0106] One end of the flap body 21 (such as Figure 2 The left end of the flap body 21 as shown in the figure is pivotally connected to the first slider 63, preferably but not limited to being connected to the end of the first slider 63 away from the main shaft 1. Figure 2 The right end of the flap body 21 shown in FIG. 1 ) and one end of the third connecting rod 22 (as shown in FIG. Figure 2 The left end of the third link 22 shown in FIG. 1 is pivotally connected, and the other end of the third link 22 (as shown in FIG. Figure 2 The right end of the third connecting rod 22 shown in FIG. Figure 2 The right end of the fourth connecting rod 23 shown in FIG. 1 is pivotally connected, and the other end of the fourth connecting rod 23 (as shown in FIG. Figure 2 The fourth connecting rod 23 is pivotally connected to the first slider 63, preferably but not limited to the right end of the first slider 63, and is located between the portion of the first slider 63 connected to the flap body 21 and the guide column 64. The middle portion of the fourth connecting rod 23 along the length direction is connected to the other end of the second transmission assembly 43 (as shown in FIG. Figure 2 The left end of the second transmission assembly 43 shown is pivotally connected.

[0107] The fourth connecting rod 23 is driven to pivot relative to the first slider 63 through the second transmission assembly 43, so that the fourth connecting rod 23 drives the flap body 21 to pivot relative to the first slider 63 through the third connecting rod 22, thereby realizing flipping and retraction. At the same time, compared with the structure with a slide groove in the related art, the first transmission assembly 32 has less wear and longer service life, and can also reduce the wear of the flap device 2 during flipping and retraction, improve the matching accuracy of the flap device 2, the matching accuracy between the flap device 2 and the second transmission assembly 43, and the service life of the fitting drum. In addition, when adjusting the drum diameter, the flip reference point of the flap device 2 has no axial change, ensuring the accuracy of the steel ring placement.

[0108] In some embodiments, the bonding drum with automatically adjustable drum diameter of an embodiment of the present invention further includes a steel ring locking block 7, which is arranged on the base device 6 and connected to the first adjusting device 3. The steel ring locking block 7 is movable along the radial direction of the main shaft 1 under the drive of the first adjusting device 3.

[0109] like Figure 2 and Figure 3 As shown, at least part of the first sliders 63 are provided with a steel ring locking block 7. Preferably, but not limited to, a corresponding steel ring locking block 7 is provided at the left end of each first slider 63. The steel ring locking block 7 is used to support the steel ring, so that in the process of the first transmission assembly 32 driving the first slider 63 to move to adjust the drum diameter, the steel ring can be locked and released at the same time, and the pre-support function can be realized.

[0110] When in use, it is preferred but not limited to adsorbing the head of the triangular rubber material through the adsorption component 9, and the main shaft 1 drives the base plate device 6 to rotate, thereby driving the triangular rubber to be wound around the drum, and the head and tail of the triangular rubber are accurately overlapped after one rotation to form a cylindrical triangular rubber material ring, and then the steel ring is placed on the steel ring locking block 7, and the first adjustment 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 at the same time, so that the steel ring can be clamped on the drum so that the relative position of the steel ring and the drum is accurate, and at the same time, the triangular rubber is stretched to a certain extent, so that the triangular rubber is close to the steel ring after being turned over.

[0111] Therefore, the first adjusting device 3 can adjust the drum diameter of the bonding drum and can also drive the pre-stressing, without setting up an independent driving component to implement the pre-stressing, further improving the automation level of the bonding drum, allowing the steel ring to be integrally formed on the bonding drum and giving the bonding drum a simple structure.

[0112] In some embodiments, Figure 2As shown, the first adjusting device 3 also includes a connecting member 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. A long hole extending in the axial direction is provided on the wall of the main shaft 1. The connecting member 33 passes through the long hole and is connected between the first nut 312 and the push ring 34. The connecting member 33 can move left and right along the long hole, so that the connecting member 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 assembly 32 (such as Figure 2 The right end (as shown) is pivotally connected to the push ring 34 to drive the first slider 63 to move under the drive of the push ring 34.

[0113] The elongated holes and the connecting members 33 are preferably but not limited to at least two correspondingly arranged and spaced apart along the circumference of the main shaft 1 .

[0114] In some embodiments, Figure 3 As shown, a side wall surface of one of the first sliders 63 is provided with an adsorption assembly 9, which includes an adsorption disk, which is preferably but not limited to at least two adsorption disks arranged along the axial direction of the main shaft 1, and the adsorption disk is arranged away from the main shaft 1, and the adsorption surface of the adsorption disk away from the main shaft 1 is substantially parallel to the outer wall surface of the retracted flap body 21, and is used to adsorb and fix the wound material head. The adsorption assembly 9 is arranged on the first slider 63 and can move with the change of the drum diameter.

[0115] The adsorption component 9 is connected to the remaining set of air paths except the two sets of air paths connected to the telescopic member 41, specifically connected to the second air path of the remaining set of air paths, so as to supply and suck air through the remaining set of air paths to realize the adsorption function.

[0116] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0117] In addition, the terms "first" and "second" are only used for distinction, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0118] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0119] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0120] In the present invention, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0121] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A laminating drum with automatically adjustable drum diameter, characterized in that: include: Spindle (1); A flap device (2), wherein a plurality of flap devices (2) surround the outer circumference of the head end of the main shaft (1) and are movably connected to the main shaft (1); A first adjusting device (3), the first adjusting device (3) comprising a screw assembly (31) and a plurality of first transmission assemblies (32), the screw assembly (31) comprising a first screw (311) and a first nut (312), the first screw (311) being inserted into the main shaft (1), the first nut (312) being connected to the first screw (311) and being movable along the first screw (311), one end of the first transmission assembly (32) being pivotally connected to the first nut (312), and the other end of the first transmission assembly (32) being pivotally connected to the corresponding flap device (2), so that the first transmission assembly (32) drives the flap device (2) to move radially along the main shaft (1) when the first nut (312) moves; A second adjusting device (4), the second adjusting device (4) is movably arranged relative to the main shaft (1) and is connected to the plurality of flap devices (2) and is used to drive the flap devices (2) to flip up and retract; A driving device (5), wherein the driving device (5) is connected to 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 is used to drive the first lead screw (311) to rotate relative to the main shaft (1).

2. The laminating drum with automatically adjustable drum diameter according to claim 1, characterized in that: The second adjusting device (4) comprises a telescopic member (41), a push plate assembly (42) and a plurality of second transmission assemblies (43); the telescopic member (41) is arranged on the outer periphery of the main shaft (1) and is retractable relative to the main shaft (1); the push plate assembly (42) is sleeved on the outer periphery of the main shaft (1) and is 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 flap device (2), so that the second transmission assembly (43) drives the flap device (2) to flip up and retract when the push plate assembly (42) moves.

3. The laminating drum with automatically adjustable drum diameter according to claim 2, characterized in that: The driving device (5) comprises a first driving member (51) and a second driving member (52), wherein the first driving member (51) is connected to the tail end of the main shaft (1) and is used to drive the main shaft (1) to rotate, and the second driving 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 driving device (5) has a first driving state and a second driving state. In the first driving state, the first driving member (51) and the second driving member (52) are both turned on and cause the main shaft (1) and the first lead screw (311) to rotate synchronously. In the second driving state, the first driving member (51) is stopped and the second driving member (52) is turned on to drive the first lead screw (311) to rotate relative to the main shaft (1).

4. The laminating drum with automatically adjustable drum diameter according to claim 3, characterized in that: The driving device (5) further comprises a driving spindle (53), a driving core shaft (54) and a rotating air ring assembly (55); the driving spindle (53) is connected between the spindle (1) and the first driving member (51) so as to drive the spindle (1) to rotate under the drive of the first driving member (51); the driving core shaft (54) is arranged in the driving spindle (53) and is connected between the first lead screw (311) and the second driving member (52) so as to drive the first lead screw (311) to rotate under the drive of the second driving member (52); the rotating air ring assembly (55) is arranged on the outer periphery of the driving spindle (53) and is connected to a first air path in the wall of the driving spindle (53); the first air path is connected to a second air path in the wall of the spindle (1); and the telescopic member (41) is a telescopic cylinder connected to the second air path.

5. The laminating drum with automatically adjustable drum diameter according to claim 4, characterized in that: The driving device (5) further comprises a first transmission mechanism (56) and a second transmission mechanism (57), wherein the first transmission mechanism (56) is connected between the tail end of the driving main shaft (53) and the first driving member (51), the tail end of the driving core shaft (54) extends out from the tail end of the driving main shaft (53), and the second transmission mechanism (57) is connected between the tail end of the driving core shaft (54) and the second driving member (52).

6. The laminating drum with automatically adjustable drum diameter according to claim 5, characterized in that: The driving device (5) also includes a housing (58), the driving spindle (53), the first driving member (51) and the second driving member (52) are all connected to the housing (58), and the driving spindle (53) can rotate around the axial direction of the driving spindle (53) relative to the housing (58), and the rotating air ring assembly (55) is located in the housing (58).

7. The laminating drum with automatically adjustable drum diameter according to claim 2, characterized in that: The telescopic member (41) comprises a cylinder body (411), a cylinder end cover (413) and a cylinder fixing ring (412) which are sleeved on the main shaft (1); 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; the cylinder fixing ring (412) is connected between the cylinder body (411) and the main shaft (1) along the radial direction of the main shaft, and divides the space formed by the cylinder body (411), the main shaft (1), the cylinder end cover (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 cover (413) to move along the axial direction of the main shaft (1), thereby driving the push plate assembly (42) to move.

8. The laminating drum with automatically adjustable drum diameter according to claim 7, characterized in that: It also includes a limit assembly (8), which is arranged on the main shaft (1) and connected to the cylinder end cover (413) to limit the limit position of the cylinder end cover (413) moving along the main shaft (1); The limiting assembly (8) comprises a limiting rod (81), a first limiting member (82) and a second limiting member (83); the limiting rod (81) is arranged on the main shaft (1); at least a portion of the limiting rod (81) extends along the axial direction of the main shaft (1) and is passed through the cylinder end cover (413); the first limiting member (82) and the second limiting member (83) are arranged on the limiting rod (81) at intervals along the axial direction of the main shaft (1); and the cylinder end cover (413) is located between the first limiting member (82) and the second limiting member (83).

9. The laminating drum with automatically adjustable drum diameter according to claim 1, characterized in that: The screw assembly (31) is a ball screw.

10. The laminating drum with automatically adjustable drum diameter according to claim 2, characterized in that: It also includes a base disc device (6), which is arranged at the head end of the main shaft (1) and closes the opening at the head end of the main shaft (1), and the flap device (2) is arranged on the base disc device (6) so as to be movable along the radial direction of the main shaft (1).

11. The laminating drum with automatically adjustable drum diameter according to claim 10, characterized in that: It also includes a steel ring locking block (7), which is arranged on the base plate device (6) and connected to the first adjusting device (3). The steel ring locking block (7) is movable along the radial direction of the main shaft (1) under the drive of the first adjusting device (3), and the steel ring locking block (7) is used to support the steel ring.

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