Winding and smoothing device and winding equipment

Abstract

The embodiment of the utility model provides a winding and smoothing device and winding equipment, and relates to the technical field of pole piece production equipment.The winding and smoothing device comprises a mounting plate; the winding module comprises a winding rotating shaft, the winding rotating shaft is installed on the installation plate, and the winding rotating shaft is used for winding a material belt; the material pressing assembly comprises a pressing roller and a pressing module, the pressing roller is arranged on one side of the winding rotating shaft, and the pressing module is used for driving the pressing roller to move towards the side close to the winding rotating shaft so that the pressing roller can abut against the material belt wound around the winding rotating shaft. According to the winding and smoothing device and the winding equipment, the pressing module can drive the pressing roller to press the material belt wound around the winding rotating shaft, and the material roll can be effectively prevented from loosening; meanwhile, if the material belt is broken, the pressing roller can fix the material belt, the material roll is prevented from loosening, and the material belt can also be prevented from falling off.

Description

Technical Field

[0001] This application relates to the field of electrode production equipment technology, and in particular to a winding and smoothing device and winding equipment. Background Technology

[0002] In related technologies, the problem of loose material rolls is prone to occur during electrode winding; at the same time, the material roll is prone to falling off when the roll breaks; in addition, the material roll winding mechanism has poor compatibility with different material rolls. Utility Model Content

[0003] This application aims to solve at least one of the technical problems existing in the prior art. To this end, this application proposes a winding and smoothing device and winding equipment to solve the problems of loose material strip during winding and material strip falling off when the strip breaks.

[0004] One embodiment of this application provides a winding and smoothing device, including:

[0005] Mounting plate;

[0006] A winding module includes a winding shaft mounted on the mounting plate, the winding shaft being used for winding material strips;

[0007] The pressing assembly includes a pressure roller and a pressing module. The pressure roller is located on one side of the winding shaft, and the pressing module is used to drive the pressure roller to move toward one side of the winding shaft so that the pressure roller abuts against the strip wound on the winding shaft.

[0008] Furthermore, the pressing module includes a swing drive, a swing arm, and a mounting bracket. The swing drive is mounted on the mounting plate, one end of the swing arm is connected to the output end of the swing drive, the mounting bracket is connected to the other end of the swing arm, and the pressure roller is rotatably mounted on the mounting bracket.

[0009] Furthermore, the clamping module includes a connector and a sliding block. The connector is connected to the swing arm and has a connecting portion. The sliding block is connected to the mounting bracket and is detachably connected to the connector.

[0010] Furthermore, the connecting part has a cylindrical structure, and the sliding block is rotatably connected to the connecting part.

[0011] Furthermore, the pressing assembly also includes a connecting block, which is provided with an anti-detachment hole, and a stop member is provided through the anti-detachment hole. The stop member is used to restrict the sliding block from disengaging from the connecting part.

[0012] Furthermore, the pressing assembly includes a limiting member and a stop block. The limiting member is connected to the mounting plate, and the stop block is provided on one or both sides of the limiting member. Each stop block is connected to the swing arm, and the stop block is used to limit the limiting member.

[0013] Furthermore, the pressing assembly includes a support base, a movable bracket, and a slide rail. The support base is fixedly connected to the mounting plate, the slide rail is installed on the support base, and the movable bracket is slidably connected to the slide rail. The extension direction of the slide rail is the same as the axial direction of the winding shaft, and the pressing module is installed on the movable bracket.

[0014] Furthermore, it also includes a correction sensor and a mounting base, the mounting base having an adjustment groove extending axially along the winding shaft, and an adjustment bolt passing through the adjustment groove.

[0015] Furthermore, the winding shaft is capable of moving along its own axial direction.

[0016] Another embodiment of the winding device of this application includes the winding smoothing device as described above.

[0017] As can be seen from the above technical solutions, the embodiments of this application have at least the following beneficial effects:

[0018] In the winding and smoothing device and winding equipment provided in this application embodiment, the pressing module can drive the pressure roller to press on the material strip wound on the winding shaft, thus effectively preventing the material roll from loosening; at the same time, if the material strip breaks, the pressure roller can fix the material strip to prevent the material roll from loosening and also prevent the material strip from falling off. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the overall structure of a winding and smoothing device provided in one embodiment of this application;

[0021] Figure 2 This is a front view of a winding and smoothing device provided in one embodiment of this application;

[0022] Figure 3 This is a schematic diagram of the structure of a winding and smoothing device provided in one embodiment of this application after removing the mounting plate;

[0023] Figure 4 This is a schematic diagram of the structure of the pressure component, the correction sensor, and the mounting base in a winding and smoothing device provided in one embodiment of this application.

[0024] Figure label:

[0025] 1. Material strip;

[0026] 100. Mounting plate;

[0027] 210. Rewinding spindle;

[0028] 310. Pressure roller; 321. Swing drive component; 322. Swing arm; 323. Mounting bracket; 330. Support base; 340. Movable bracket; 351. Connector; 352. Stop block; 353. Sliding block; 354. Fastener; 355. Connecting block; 356. Stop component; 361. First stop block; 362. Second stop block; 370. Limiting component;

[0029] 410. Mounting base; 411. Adjustment slot; 420. Correction sensor;

[0030] 500. Full material sensor;

[0031] 610. Cache mechanism; 620. Isolation mechanism. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] See Figures 1 to 4 As shown, one embodiment of this application discloses a winding and smoothing device, including a mounting plate 100, a winding module, and a pressing assembly.

[0034] Specifically, the winding module includes a winding shaft 210, which is mounted on the mounting plate 100 and is used to wind the material strip 1; the pressing assembly includes a pressure roller 310 and a pressing module, the pressure roller 310 is located on one side of the winding shaft 210, and the pressing module is used to drive the pressure roller 310 to move toward one side of the winding shaft 210 so that the pressure roller 310 abuts against the material strip 1 wound on the winding shaft 210.

[0035] In the winding and smoothing device provided in this application embodiment, the pressing module can drive the pressure roller 310 to press on the material strip 1 wound on the winding shaft 210, thus effectively preventing the material roll from loosening; at the same time, if the material strip 1 breaks, the pressure roller 310 can fix the material strip 1 to prevent the material roll from loosening, and can also effectively reduce the situation of the material strip falling off.

[0036] In some embodiments of this application, see Figures 1 to 4 The pressing module includes a swing drive 321, a swing arm 322, and a mounting bracket 323. The swing drive 321 is mounted on the mounting plate 100. One end of the swing arm 322 is connected to the output end of the swing drive 321. The mounting bracket 323 is connected to the other end of the swing arm 322. The pressure roller 310 is rotatably mounted on the mounting bracket 323. In this embodiment, the rotation axis of the swing drive 321 is parallel to the axis of the winding shaft 210. The swing drive 321 is used to drive the swing to move towards the side closer to the winding shaft 210. The pressure roller 310 can rotate relative to the mounting bracket 323.

[0037] In practical applications, the material strip 1 is wound around the outer circumference of the winding shaft 210, and gradually forms a coil on the winding shaft 210. As the winding proceeds, the diameter of the coil gradually increases. During this process, the pressure roller 310 abuts against the outermost edge of the material strip 1 of the coil. The pressure roller 310 can rotate relative to the mounting bracket 323, which can smooth the winding material strip 1, making the material strip 1 more compact and reducing the problem of the coil being loose.

[0038] It is understandable that the function of the oscillating drive 321 is to drive the swing arm 322 to move toward the side closer to the take-up shaft 210, so that the pressure roller 310 can come into contact with the material strip 1 wound on the take-up shaft 210. As the diameter of the material roll gradually increases, the distance between the pressure roller 310 and the take-up shaft 210 will gradually increase. That is, when the force exerted by the material roll on the pressure roller 310 is greater than the force exerted by the oscillating drive 321 on the pressure roller 310, the swing arm 322 can rotate in the opposite direction.

[0039] In one possible implementation, the swing drive 321 is a swing cylinder.

[0040] Of course, in some other possible implementations, the swing drive 321 may also be selected as a spring, a coil spring or other drive structure that can drive the swing arm 322 to swing toward the winding shaft 210.

[0041] In some embodiments of this application, see Figures 2 to 4The pressing module includes a connector 351 and a sliding block 353. The connector 351 is connected to the swing arm 322 and has a connecting part. The sliding block 353 is connected to the mounting bracket 323 and the sliding block 353 is detachably connected to the connecting part. This allows for easy adjustment of the pressure roller 310.

[0042] In one possible implementation, see Figures 2 to 4 The clamping module includes a connector 351, a stop 352, a sliding block 353, and a fastener 354. The connector 351 is connected to the swing arm 322 and has a connecting portion. The sliding block 353 is connected to the mounting bracket 323 and has a connecting hole through which the connecting portion passes. The connecting portion is movably connected to the connecting hole. The connecting portion has a fastening hole, and the fastener 354 engages with the fastening hole. The stop 352 is mounted on the connector 351 via the fastener 354. The stop 352 is used to stop the sliding block 353 and prevent it from sliding out of the connecting portion. During assembly, the connecting hole of the sliding block 353 is aligned with the connecting portion of the connector 351, so that the sliding block 353 fits into the connecting portion. Then, the fastener 354 and the stop 352 are installed to prevent the sliding block 353 from sliding out of the connecting portion. When it is necessary to disassemble the pressure roller 310, first remove the fastener 354 and the stop block 352, and then the sliding block 353 can be removed. In this way, the pressure roller 310 can be quickly installed and removed.

[0043] In one possible implementation, the fastener 354 may specifically be a bolt, and the fastening hole may be a threaded hole.

[0044] In this embodiment, the stop block 352 is provided with a through hole for the fastener 354 to pass through. The outer circle diameter of the cross-sectional profile of the stop block 352 is larger than the diameter of the connecting hole to prevent the sliding block 353 from sliding out of the connecting part.

[0045] In some embodiments of this application, the connecting part has a cylindrical structure, and the sliding block 353 is rotatably connected to the connecting part. In this way, the pressure roller 310 can rotate around the connecting part within a certain range, which helps to keep the pressure roller 310 in contact with the surface of the material strip 1 at all times, and ensures the smoothing effect on the material strip 1.

[0046] In some embodiments of this application, see Figures 1 to 4 As shown, the pressing assembly also includes a connecting block 355, which has an anti-detachment hole. A stop 356 passes through the anti-detachment hole and is used to prevent the sliding block 353 from disengaging from the connecting part of the connecting member 351. The projection of the sliding block 353 along the extension direction of the connecting part is at least partially located on the stop 356, and the stop 356 is located on the side of the sliding block 353 closer to the stop block 352. Thus, the stop 356 can be used to prevent the sliding block 353 from sliding out of the connecting member 351.

[0047] In one possible implementation, the anti-detachment hole is a threaded hole, and the stop 356 is a bolt.

[0048] Of course, the stop 356 can also be a pin or other combination that can stop the sliding block 353.

[0049] In this embodiment, see Figure 3 and Figure 4 A stepped groove is provided at the position corresponding to the sliding block 353 and the stop member 356. The stop member 356 extends at least partially into the stepped groove, thereby preventing the sliding block 353 from sliding out of the connecting part.

[0050] In some embodiments of this application, see Figure 3 As shown, the pressing assembly includes a limiting member 370 and stop blocks. The limiting member 370 is connected to the mounting plate 100, and stop blocks are provided on one or both sides of the limiting member 370. Each stop block 352 is connected to the swing arm 322, and the stop blocks are used to limit the limiting member 370. In this way, the swing range of the swing arm 322 can be limited by the limiting effect of the limiting member 370 and the stop blocks.

[0051] In the above embodiments, the limiting member 370 can be directly connected to the mounting plate 100, or it can be indirectly connected to the mounting plate 100 through other mounting structures, which is not limited here.

[0052] In this embodiment, see Figure 3 The stop block includes a first stop block 361 and a second stop block 362, which are installed at intervals on the swing arm 322. The limiting member 370 is located between the first stop block 361 and the second stop block 362. The first stop block 361 and the second stop block 362 together limit the swing range of the limiting member 370, thus limiting the swing range of the swing arm 322 and preventing the swing arm 322 from swinging too much.

[0053] In some embodiments of this application, see Figures 1 to 4 The pressing assembly includes a support base 330, a movable bracket 340, and a slide rail. The support base 330 is fixedly connected to the mounting plate 100, the slide rail is mounted on the support base 330, and the movable bracket 340 is slidably connected to the slide rail. The extension direction of the slide rail is the same as the axial direction of the winding shaft 210, and the pressing module is mounted on the movable bracket 340. This allows the pressure roller 310 to be adjusted in position along the axial direction of the winding shaft 210 to accommodate material strips 1 of different widths.

[0054] It should be pointed out that, Figure 1 The X direction shown is the axial direction of the winding shaft 210.

[0055] In some embodiments of this application, see Figures 1 to 4 The winding and smoothing device also includes a web-aligning sensor 420 and a mounting base 410. The mounting base 410 has an adjustment groove 411 extending axially along the winding shaft 210, and an adjustment bolt passes through the adjustment groove 411. In use, the relative position of the web-aligning sensor 420 in the axial direction of the winding shaft 210 can be changed by loosening the adjustment bolt to adapt to the web-aligning work of strips 1 with different widths.

[0056] In some embodiments of this application, the web correction sensor 420 can be moved in a direction perpendicular to the winding shaft 210 to change the lateral position of the web correction sensor 420.

[0057] In some embodiments of this application, the winding shaft 210 is movable along its own axial direction. Thus, by changing the position of the winding shaft 210, the relative positions of the material roll and the material strip 1 in the axial direction of the winding shaft 210 can be adjusted.

[0058] It is worth understanding that the winding shaft 210 can move along its own axial direction in various ways. For example, the drive mechanism that drives the winding shaft 210 to rotate can be mounted on a guide rail, the extension direction of which is consistent with the axial direction of the winding shaft 210. The guide rail is directly or indirectly mounted on the mounting plate 100, and the mounting plate 100 provides corresponding support for the guide rail.

[0059] In one possible implementation, the winding and smoothing device includes a pressing assembly and a web-aligning sensor, wherein the winding shaft can move along its own axial direction. Thus, when the web-aligning sensor detects a deviation in the material strip 1, the winding shaft 210, the pressure roller 310, and the web-aligning sensor simultaneously adjust their relative positions in the axial direction of the winding shaft 210 to ensure alignment during winding.

[0060] In one embodiment of this application, see [link to embodiment]. Figures 1 to 3 The winding and smoothing device includes a full-load sensor 500, a buffer mechanism 610, and a stop mechanism 620. The full-load sensor 500 is located on one side of the winding shaft 210 and is used to detect whether the material roll has reached a preset diameter to determine whether the winding is complete. The stop mechanism 620 is used to cut the material strip 1 after winding is complete.

[0061] Another embodiment of this application discloses a winding device, including the winding and smoothing device as described above, which has all the technical effects of the aforementioned winding and smoothing device, and will not be repeated here.

[0062] It is worth understanding that the aforementioned winding equipment can specifically be battery production equipment or film winding production equipment, etc.

[0063] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0064] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0065] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0066] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A winding smoothing device, characterized in that, The utility model relates to a winding device, including: An installation plate; A winding module including a winding shaft, the winding shaft is installed to the installation plate, the winding shaft is used for winding the material belt; A pressure material assembly including a pressure roller and a pressure module, the pressure roller is arranged at one side of the winding shaft, the pressure module is used for driving the pressure roller moves to one side of the winding shaft, so that the pressure roller and the material belt winding in the winding shaft abuts;The pressure module includes a swing drive, a swing arm and an installation support, the swing drive is installed to the installation plate, one end of the swing arm is connected with the output end of the swing drive, the installation support is connected with the other end of the swing arm, the pressure roller is rotatably installed to the installation support; The pressure material assembly includes a limiting piece and a stop block, the limiting piece is connected with the installation plate, one side or both sides of the limiting piece is equipped with the stop block, wherein each stop block is connected with the swing arm, and the stop block is used for limiting the limiting piece.

2. The winding and smoothing device according to claim 1, characterized in that The pressure module includes a connecting piece and a sliding block, the connecting piece is connected with the swing arm, the connecting piece has a connecting part, the sliding block is connected with the installation support, and the sliding block is detachably connected with the connecting part.

3. The roll tamer device of claim 2, wherein, The connecting part is a cylindrical structure, and the sliding block is rotatably connected with the connecting part.

4. A winding smoothing device according to claim 2 or 3, characterized in that The pressure material assembly further includes a connecting block provided with an anti-dropping hole, a stopper is arranged in the anti-dropping hole, and the stopper is used to limit the sliding block from being separated from the connecting part.

5. The roll tamer device of claim 1, wherein, The pressure material assembly includes a support seat, a movable support and a sliding rail, the support seat is fixedly connected with the installation plate, the sliding rail is installed to the support seat, and the movable support is slidably connected with the sliding rail, wherein the extension direction of the sliding rail is the same as the axial direction of the winding shaft, and the pressure module is installed to the movable support.

6. The roll tamer device of claim 1, wherein, It also includes a deviation correction sensor and a mounting seat, the mounting seat is provided with an adjusting groove extending along the axial direction of the winding shaft, and an adjusting bolt is arranged in the adjusting groove.

7. The winding smoothing device according to claim 1 or 6, characterized in that The winding shaft can move along the axial direction of itself.

8. A winding apparatus characterized by comprising: The utility model relates to a winding device, including: An installation plate; A winding module including a winding shaft, the winding shaft is installed to the installation plate, the winding shaft is used for winding the material belt; A pressure material assembly including a pressure roller and a pressure module, the pressure roller is arranged at one side of the winding shaft, the pressure module is used for driving the pressure roller moves to one side of the winding shaft, so that the pressure roller and the material belt winding in the winding shaft abuts; The pressure module includes a swing drive, a swing arm and an installation support, the swing drive is installed to the installation plate, one end of the swing arm is connected with the output end of the swing drive, the installation support is connected with the other end of the swing arm, the pressure roller is rotatably installed to the installation support; The pressure material assembly includes a limiting piece and a stop block, the limiting piece is connected with the installation plate, one side or both sides of the limiting piece is equipped with the stop block, wherein each stop block is connected with the swing arm, and the stop block is used for limiting the limiting piece. The pressure module includes a connecting piece and a sliding block, the connecting piece is connected with the swing arm, the connecting piece has a connecting part, the sliding block is connected with the installation support, and the sliding block is detachably connected with the connecting part. The connecting part is a cylindrical structure, and the sliding block is rotatably connected with the connecting part. The pressure material assembly further includes a connecting block provided with an anti-dropping hole, a stopper is arranged in the anti-dropping hole, and the stopper is used to limit the sliding block from being separated from the connecting part. The pressure material assembly includes a support seat, a movable support and a sliding rail, the support seat is fixedly connected with the installation plate, the sliding rail is installed to the support seat, and the movable support is slidably connected with the sliding rail, wherein the extension direction of the sliding rail is the same as the axial direction of the winding shaft, and the pressure module is installed to the movable support. It also includes a deviation correction sensor and a mounting seat, the mounting seat is provided with an adjusting groove extending along the axial direction of the winding shaft, and an adjusting bolt is arranged in the adjusting groove. The winding shaft can move along the axial direction of itself. The utility model relates to a winding device, including: An installation plate; A winding module including a winding shaft, the winding shaft is installed to the installation plate, the winding shaft is used for winding the material belt; A pressure material assembly including a pressure roller and a pressure module, the pressure roller is arranged at one side of the winding shaft, the pressure module is used for driving the pressure roller moves to one side of the winding shaft, so that the pressure roller and the material belt winding in the winding shaft abuts; The pressure module includes a swing drive, a swing arm and an installation support, the swing drive is installed to the installation plate, one end of the swing arm is connected with the output end of the swing drive, the installation support is connected with the other end of the swing arm, the pressure roller is rotatably installed to the installation support; The pressure material assembly includes a limiting piece and a stop block, the limiting piece is connected with the installation plate, one side or both sides of the limiting piece is equipped with the stop block, wherein each stop block is connected with the swing arm, and the stop block is used for limiting the limiting piece. The pressure module includes a connecting piece and a sliding block, the connecting piece is connected with the swing arm, the connecting piece has a connecting part, the sliding block is connected with the installation support, and the sliding block is detachably connected with the connecting part. The connecting part is a cylindrical structure, and the sliding block is rotatably connected with the connecting part. The pressure material assembly further includes a connecting block provided with an anti-dropping hole, a stopper is arranged in the anti-dropping hole, and the stopper is used to limit the sliding block from being separated from the connecting part. The pressure material assembly includes a support seat, a movable support and a sliding rail, the support seat is fixedly connected with the installation plate, the sliding rail is installed to the support seat, and the movable support is slidably connected with the sliding rail, wherein the extension direction of the sliding rail is the same as the axial direction of the winding shaft, and the pressure module is installed to the movable support. It also includes a deviation correction sensor and a mounting seat, the mounting seat is provided with an adjusting groove extending along the axial direction of the winding shaft, and an adjusting bolt is arranged in the adjusting groove. The winding shaft can move along the axial direction of itself. The utility model relates to a winding device, including: An installation plate; A winding module including a winding shaft, the winding shaft is installed to the installation plate, the winding shaft is used for winding the material belt; A pressure material assembly including a pressure roller and a pressure module, the pressure roller is arranged at one side of the winding shaft, the pressure module is used for driving the pressure roller moves to one side of the winding shaft, so that the pressure roller and the material belt winding in the winding shaft abuts; The pressure module includes a swing drive, a swing arm and an installation support, the swing drive is installed to the installation plate, one end of the swing arm is connected with the output end of the swing drive, the installation support is connected with the other end of the swing arm, the pressure roller is rotatably installed to the installation support; The pressure material assembly includes a limiting piece and a stop block, the limiting piece is connected with the installation plate, one side or both sides of the limiting piece is equipped with the stop block, wherein each stop block is connected with the swing arm, and the stop block is used for limiting the limiting piece. The pressure module includes a connecting piece and a sliding block, the connecting piece is connected with the swing arm, the connecting piece has a connecting part, the sliding block is connected with the installation support, and the sliding block is detachably connected with the connecting part. The connecting part is a cylindrical structure, and the sliding block is rotatably connected with the connecting part. The pressure material assembly further includes a connecting block provided with an anti-dropping hole, a stopper is arranged in the anti-dropping hole, and the stopper is used to limit the sliding block from being separated from the connecting part. The pressure material assembly includes a support seat, a movable support and a sliding rail, the support seat is fixedly connected with the installation plate, the sliding rail is installed to the support seat, and the movable support is slidably connected with the sliding rail, wherein the extension direction of the sliding rail is the same as the axial direction of the winding shaft, and the pressure module is installed to the movable support. It also includes a deviation correction sensor and a mounting seat, the mounting seat is provided with an adjusting groove extending along the axial direction of the winding shaft, and an adjusting bolt is arranged in the adjusting groove. The winding shaft can move along the axial direction of itself. The utility model relates to a winding device, including: An installation plate; A winding module including a winding shaft, the winding shaft is installed to the installation plate, the winding shaft is used for winding the material belt; A pressure material assembly including a pressure roller and a pressure module

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