Automatic roll device

Abstract

The automatic plate winding device of the present application can be applied in a printing device, adopts the design of the rotating body cooperating with the gear set, has small axial space occupation, and is beneficial to the miniaturization development of the printing device; the outer ring of the rotating body is in transmission connection with the gear set, and the outer ring is further connected with a locking block; when the locking block is clamped by the clamping piece, the outer ring does not rotate, the gear set rotates around the outer ring along with the rotation of the cylinder, simultaneously drives the winding shaft to wind the plate, thereby completing the automatic plate winding action; the clamping piece is moved to the front of the rotating direction of the locking block, thereby clamping the locking block; compared with the conventional cooperation locking between the teeth and the teeth, the clamping piece will not slip or be stuck, and is more safe and durable.

Description

Technical Field

[0001] This invention relates to the field of printing technology, and in particular to an automatic plate-rolling device. Background Technology

[0002] In the printing process of cartons, different carton models require different printing content. Therefore, the printing plates on the printing rollers in the printing equipment need to be frequently disassembled and replaced. During installation, if the printing plate is not securely attached, it is prone to moving up and down on the printing roller. If the printing plate is attached too tightly, it will deform due to stretching. Therefore, whether the printing plate is too loose or too tight, it is detrimental to the printing quality. Thus, the plate attachment operation often affects both printing efficiency and printing quality.

[0003] The usual method for mounting the printing plate is as follows: the front mounting strip of the printing plate is directly fixed to the mounting plate of the printing roller, and the rear mounting strip is inserted into the mounting groove of the printing roller. The rear mounting strip inserted into the mounting groove is wound on the winding shaft to make the printing plate adhere tightly to the printing roller.

[0004] Traditional printing equipment typically involves operators using a wrench to turn a winding shaft to rewind the printing plate. In this method, the tightness of the plate is entirely determined by the operator's experience, making it highly susceptible to human error. Therefore, in actual production applications, this method often fails to meet printing quality requirements due to its low efficiency and excessive reliance on operator skill.

[0005] To address the aforementioned issues, some manufacturers have developed devices that eliminate the need for manual plate mounting. One such device is described in patent application number 201811241439.8, which discloses an automatic plate-rolling device and method for a corrugated cardboard printing machine. This device consists of a gear frame mounted on the printing roller shaft. A first plate-rolling gear and a second plate-rolling gear are arranged parallel to each other on the gear frame. A telescopic rack, driven by a cylinder, engages or disengages with the first plate-rolling gear. The second plate-rolling gear is connected to a plate-hanging shaft gear via a plate-mounting gear located at one end of the plate-hanging shaft, which is parallel to the inner side of the printing roller. The method involves a cylinder driving the telescopic rack to engage or disengage with the first plate-rolling gear. When engaged, the plate-mounting gear rotates around the second plate-rolling gear, causing the plate-hanging shaft gear to rotate, thus tightening the printing plate. When disengaged, the printing roller can begin printing.

[0006] These automatic plate-winding devices use a cylinder to drive a telescopic rack to engage or disengage with a first plate-winding gear. The telescopic rack engages the first plate-winding gear, generating movement during machine operation. When the plate is wound to the desired position, it needs to be locked in place. Since the teeth of the telescopic rack and the first plate-winding gear may not align at the predetermined position, if the telescopic rack extends directly, slippage or jamming can easily occur, which is unsafe. Furthermore, the plate-winding stroke is controlled by adjusting the cylinder's pushing time to maintain continuous engagement between the telescopic rack and the first plate-winding gear. This method is time-consuming and wasteful of electricity. In addition, it requires axially arranged first and second plate-winding gears, whose cooperation completes the plate-hanging action. This structure occupies a large axial space, hindering the trend towards miniaturization of equipment. Therefore, the above problems urgently need to be solved. Summary of the Invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an automatic plate winding device that can solve the problem of slippage or jamming when the automatic plate winding device of the prior art is hung, and occupies little axial space, which is conducive to the miniaturization of the equipment.

[0008] An automatic plate winding device includes a roller, a drive mechanism for driving the roller to rotate, and a plate hanging groove on the outer side of the roller. It also includes:

[0009] The plate hanging mechanism includes a rolling shaft located in the plate hanging groove, a gear set that is pulsatorically connected to one end of the rolling shaft, and a rotating body sleeved on the outer side of one end of the roller.

[0010] The rotating body includes an outer ring that can rotate relative to the drum, the outer ring being drivenly connected to the gear set, and the outer ring is also connected to a locking block;

[0011] A locking mechanism, the locking mechanism including a latching member movable to the front of the lock block in the direction of rotation and locking the lock block;

[0012] After the locking piece is engaged, the outer ring does not rotate. The gear set rotates around the outer ring as the roller rotates, and at the same time drives the winding shaft to wind the hanging plate.

[0013] Specifically, the gear set includes a first gear and a second gear. The first gear is sleeved on one end of the winding shaft, and the outer ring surface is provided with external teeth that cooperate with the gear set. The second gear meshes with both the first gear and the external teeth.

[0014] Specifically, the roller has a mounting plate along its length, and the second gear is rotatably mounted on the mounting plate.

[0015] Specifically, the automatic plate rolling device also includes a plate unloading mechanism, which includes a linkage shaft located in the plate hanging slot, a rotating frame connected to both ends of the linkage shaft, a pawl set on the rotating frame, and a ratchet sleeved on the outside of the rolling shaft. The pawl cooperates with the ratchet. A spring is also provided below the rotating frame. The lower end of the spring is fixed to the bottom of the plate hanging slot, and the upper end is connected to the bottom of the rotating frame.

[0016] Specifically, each of the rotating frames is also connected to a handle along the axial direction.

[0017] Specifically, the automatic plate winding device further includes a reset mechanism, which includes a torsion spring. One end of the torsion spring is connected to the ratchet, and the other end is connected to the mounting plate.

[0018] Specifically, the locking mechanism further includes a pushing device and a rotating column. The locking member is rotatable, with its middle part hinged to the rotating column. One end of the locking member is hinged to the output end of the pushing device, and the other end is provided with a stop for locking the locking block.

[0019] Specifically, the pushing device is a single-acting spring-return cylinder, and the mounting end of the pushing device has a rotating structure.

[0020] Specifically, the end of the winding shaft away from the locking mechanism is also connected to an extension for the wrench to turn.

[0021] Specifically, the drive mechanism is a combination of a conventional motor and a gearbox or a servo motor.

[0022] The beneficial effects of this invention are:

[0023] The automatic plate-rolling device of the present invention can be applied in printing equipment. It adopts a design that combines a rotating body with a gear set, which occupies little space along the axial direction, thus facilitating the miniaturization of printing equipment. The outer ring of the rotating body is connected to the gear set for transmission, and the outer ring is also connected to a locking block. When the locking block is locked by the locking component, the outer ring does not rotate, and the gear set rotates around the outer ring with the rotation of the roller, thereby driving the rolling shaft to roll the plate, thus completing the automatic plate-rolling action. The locking component moves to the front of the locking block in the direction of rotation, thereby locking the locking block. Compared with the conventional gear-to-gear locking, slippage or jamming will not occur, making it safer and more durable. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 A schematic diagram of the structure before or after mounting or unmounting the plate, using a non-full-wheel as the plate-hanging mechanism in Comparative Example 1.

[0026] Figure 2 This is a schematic diagram of the structure after the plate is hung using a non-full-wheel mechanism in Comparative Example 1.

[0027] Figure 3 The three-dimensional structure of the automatic plate winding device in Example 1 Figure 1 ;

[0028] Figure 4 for Figure 3 Enlarged view of section A;

[0029] Figure 5 for Figure 3 Enlarged view of section B;

[0030] Figure 6 The three-dimensional structure of the automatic plate winding device in Example 1 Figure 2 ;

[0031] Figure 7 for Figure 6 Enlarged view of section C;

[0032] Figure 8 This is a schematic diagram of the hanging mechanism in Example 1;

[0033] Figure 9 for Figure 8 Enlarged view of section D;

[0034] Figure 10 This is a schematic diagram of the plate mounting mechanism and plate unloading mechanism in Example 1;

[0035] Figure 11 This is a schematic diagram of the unloading mechanism in Example 1;

[0036] Figure 12 This is a schematic diagram of the locking mechanism before locking in Example 1;

[0037] Figure 13 This is a schematic diagram of the locking mechanism in Example 1 after the locking block is engaged.

[0038] Figure 14 This is a three-dimensional structural diagram of the automatic plate winding device in Example 2.

[0039] The attached figures are labeled as follows: roller 10, hanging slot 11, hanging mechanism 20, rolling shaft 21, gear set 22, bearing 23, inner ring 231, outer ring 232, external gear 2321, locking block 24, locking mechanism 30, clamp 31, first gear 221, second gear 222, mounting plate 12, unloading mechanism 40, linkage shaft 41, rotating frame 42, pawl 43, ratchet 44, spring 45, handle 46, reset mechanism 50, torsion spring 51, pushing device 32, rotating column 33, stop block 311, hook 211, extension 212, drive mechanism 60, ordinary motor 61, gearbox 62, servo motor 63, non-full wheel 71. Detailed Implementation

[0040] This invention provides an automatic plate-winding device. To make the objectives, technical solutions, and effects of this invention clearer and more explicit, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the invention and are not intended to limit the invention.

[0041] Comparative Example 1

[0042] Figure 1 and Figure 2 The diagrams show the structure of the plate-hanging mechanism before and after plate unloading, using a non-full-wheel 71 as the plate-hanging mechanism. This design involves using a gear with a non-full-wheel 71 structure (i.e., an incomplete cylindrical gear). When rolling the plate, the operator needs to manually press the pawl and use a wrench to turn the ratchet. Furthermore, the two sides are not synchronized, the number of teeth is limited, and the rolling stroke is restricted. This comparative example 1 is for illustrative purposes only and does not constitute the technical solution of this application.

[0043] Example 1

[0044] Please see Figure 3 This embodiment discloses an automatic plate winding device, including a roller 10 for mounting the printing plate and a drive mechanism 60 for driving the roller 10 to rotate. The printing plate includes a flexible printing strip and a front hanging strip and a rear hanging strip connected to the front and rear ends of the flexible printing strip. The installation method of the front hanging strip can be screw fixing, adhesive fixing, clamping fixing, etc. In this embodiment, the installation method of the front hanging strip is bolt fixing, but it is not limited to the above installation methods. Correspondingly, this embodiment adds an installation strip for mounting and fixing the front hanging strip on the outside of the roller 10. During installation, after aligning the front hanging strip, it is fixed to the installation strip with screws. In addition, in order to facilitate the operator to accurately install the front hanging strip, some rulers are also set on the surface of the installation strip.

[0045] Additionally, please see Figure 4In order to achieve the hanging of the back-hanging strip, this embodiment also needs to provide a hanging groove 11 for inserting the back-hanging strip along the length direction on the outside of the roller 10. After the back-hanging strip inserted into the hanging groove 11 is wound up, the rubber sheet is tightly attached to the roller 10, thereby preventing the rubber sheet from loosening.

[0046] like Figure 3 , 4 As shown in Figure 8, the automatic plate winding device disclosed in this embodiment also has a plate hanging mechanism 20. The plate hanging mechanism 20 includes a winding shaft 21 located in the plate hanging groove 11, a gear set 22 that is drivenly connected to one end of the winding shaft 21, and a rotating body sleeved on the outer side of one end of the roller 10. The rotating body adopts a bearing 23, specifically a ball bearing, including an inner ring 231, balls, and an outer ring 232. The inner ring 231 and the outer ring 232 are coaxial. The inner ring 231 cooperates with the roller 10, and the outer ring 232 can rotate relative to the inner ring 231. The outer ring 232 is drivenly connected to the gear set 22, and the outer ring 232 is also connected to a locking block 24.

[0047] like Figure 5 , 12 As shown in Figure 13, the automatic plate winding device disclosed in this embodiment also has a locking mechanism 30. The locking mechanism 30 includes a locking member 31 that can be moved to the front of the locking block 24 to lock the locking block 24 in the direction of rotation. After the locking member 31 locks the locking block 24, the outer ring 232 does not rotate, and the gear set 22 rotates around the outer ring 232 with the rotation of the roller 10, while driving the winding shaft 21 to wind the hanging plate.

[0048] The automatic plate-rolling device of the present invention can be applied in printing equipment. The plate-hanging mechanism 20 adopts a design in which a rotating body and a gear set 22 cooperate, which occupies little space along the axial direction and is conducive to the miniaturization of printing equipment. The outer ring 232 of the rotating body is connected to the gear set 22 for transmission, and the outer ring 232 is also connected to a locking block 24. When the locking piece 31 locks the locking block 24, the outer ring 232 does not rotate with the rotation of the roller 10, that is, the outer ring 232 is fixed relative to the frame of the printing equipment. The gear set 22 rotates with the rotation of the roller 10. Since the gear set 22 is connected to the outer ring 232 for transmission, the gear set 22 can rotate around the outer ring 232, and at the same time drive the rolling shaft 21 to roll the plate, thereby completing the automatic plate-hanging action. The locking piece 31 moves to the front of the locking block 24 in the direction of rotation, thereby locking the locking block 24. Compared with the conventional gear-to-gear locking, slippage or jamming will not occur, making it safer and more durable.

[0049] Conventional plate-winding devices typically design the gears used to drive the winding shaft as full-wheel structures (i.e., complete cylindrical gears). For example, an application document for an automatic plate-winding device for a corrugated cardboard printing machine disclosed in application number 201811241439.8 is provided. In order to increase the winding stroke of the winding shaft, the outer diameter of the gear is usually designed to be larger. However, the outer tangent circle of a larger gear generally exceeds the outer tangent circle of the cylinder 10, which affects the normal printing of the cylinder 10. Therefore, the only solution is to increase the depth of the plate-hanging groove 11. However, if the depth of the plate-hanging groove 11 is too large, problems such as difficulty in aligning and inserting the subsequent plate strip and insufficient length will occur.

[0050] Based on the above problems, in order to solve the problem of the slotting depth of the mounting slot 11, the technical solution of Comparative Example 1 is to design the gear used to drive the winding shaft as a non-full gear structure (i.e., a non-complete cylindrical gear), referring to... Figures 1 to 2 As shown, this structure allows for a smaller groove depth in the plate slot 11 without affecting the normal printing of the roller 10. However, the limited number of teeth results in a small travel of the plate roll, which can easily lead to problems with the plate not being securely attached.

[0051] In response to the above problems, such as Figure 4 , 11 As shown in Figure 12, this embodiment adds a gear set 22, which includes a first gear 221 and a second gear 222. The first gear 221 is sleeved on one end of the winding shaft 21. The outer ring 232 has external teeth 2321 that mesh with the gear set 22. The second gear 222 meshes with both the first gear 221 and the external teeth 2321. When the locking piece 31 locks the locking block 24, the outer ring 232 does not rotate, and the rotation of the roller 10 drives the gear set 22 to rotate as a whole. Since the external teeth 2321 mesh with the second gear 222, the second gear 222 can rotate around the outer ring 232. The external gear 2321 of 32 rotates, and the second gear 222 also meshes with the first gear 221. While the first gear 221 rotates, it drives the winding shaft 21 to wind the hanging plate. In this embodiment, the gear set 22 is used as the intermediate transmission hub between the outer ring 232 and the winding shaft 21. Moreover, both the first gear 221 and the second gear 222 are full-wheel structures. In this way, the groove depth of the hanging plate groove 11 can be designed to be smaller. The first gear 221 can be designed as a full-wheel structure, and the outer diameter of the first gear 221 can be made smaller, which can ensure the winding stroke of the winding shaft 21, making the hanging plate strip more secure after hanging.

[0052] The external tooth 2321 is a non-full tooth structure formed on the surface of the outer ring 232. By setting the number of teeth of the external tooth 2321, the meshing stroke between the second gear 222 and the external tooth 2321 can be controlled, thereby achieving the effect of controlling the number of turns of the winding shaft 21.

[0053] like Figure 4 , 7As shown, a mounting plate 12 is provided on the outer edge of the end of the roller 10 along the length direction. The second gear 222 is rotatably mounted on the mounting plate 12. The mounting plate 12 is installed in an embedded manner at the end of the roller 10 along the length direction, and its outer side is designed as an arc surface consistent with the shape of the roller 10, which reduces the resistance of the roller 10 rotation and is also better adapted to the bonding of the adhesive plate.

[0054] like Figure 10 , 11 As shown, the automatic plate winding device also has a plate unloading mechanism 40. The plate unloading mechanism 40 includes a linkage shaft 41 located in the plate hanging slot 11, a rotating frame 42 connected to both ends of the linkage shaft 41, a pawl 43 mounted on the rotating frame 42, and a ratchet 44 sleeved on the outside of the winding shaft 21. The pawl 43 and the ratchet 44 cooperate to control the rotation of the winding shaft 21 and the gear set 22. This is safe and prevents fatigue and slippage. A spring 45 is also provided below the rotating frame 42. The lower end is fixed to the bottom of the mounting slot 11, and the upper end is connected to the bottom of the rotating frame 42. The spring 45 always exerts an upward elastic force on the rotating frame 42. During the locking stage, the elastic force of the spring 45 enables the pawl 43 to lock onto the ratchet 44, preventing the winding shaft 21 from loosening, thereby ensuring that the printing plate always has a good adhesion effect during the printing process. During the unloading stage, by pressing the rotating frame 42, the pawl 43 no longer locks onto the ratchet 44, and the winding shaft 21 can reverse, thereby releasing the back mounting strip of the printing plate. The structure is ingenious.

[0055] like Figure 7 As shown, a handle 46 is also connected axially to the rotating frame 42 in the direction away from the locking mechanism 30, and a hole for the handle 46 to move needs to be provided at the corresponding position of the mounting plate 12. The shape of the hole can be an oblong hole, but it is not limited to an oblong hole. When unloading the plate, by pressing the handle 46, the rotating frame 42 on this side rotates downward. Since the two rotating frames 42 are linked by the linkage shaft 41, the rotating frame 42 on the other side rotates downward synchronously, so that the pawls 43 on both sides no longer lock the ratchet 44, which can realize one-click unloading, which is safer and faster.

[0056] As an extension of automation, the above can also be used to add a power device (not shown) on the mounting plate 12 that can automatically press the handle 46. Specifically, it can be a cylinder, electric cylinder or other power device. With the corresponding control program or manual control switch, the power device can automatically press the handle 46 to achieve a more automated effect.

[0057] like Figure 4 and Figure 7As shown, the automatic plate winding device also includes a reset mechanism 50, which includes a torsion spring 51. The torsion spring 51 has two insertion ends. One insertion end of the torsion spring 51 is connected to the insertion hole on the ratchet 44, and the other insertion end is connected to the insertion hole on the mounting plate 12. With the setting of the torsion spring 51, after the plate unloading action is completed, the winding shaft 21 and the gear set 22 can be automatically reset by the torsion of the torsion spring 51. There is no need to use other power mechanisms to control the reset. The structure is ingenious and consumes little power.

[0058] like Figure 5 As shown, the locking mechanism 30 also includes a pushing device 32 and a rotating column 33. The pushing device 32 is specifically set on one side of the end of the roller 10 along the axial direction and is set along the tangential direction of the circumferential movement of the locking block 24. Since its pushing direction is towards the clamping member 31, it occupies less space along the axial direction of the roller 10, thus greatly reducing the size of the equipment. The clamping member 31 is rotatable. The middle part of the clamping member 31 is hinged to the rotating column 33. One end of the clamping member 31 is hinged to the output end of the pushing device 32, and the other end is provided with a stop 311 for locking the locking block 24. By restricting the movement of the locking block 24 by the stop 311, the gear set 22 can rotate around the external teeth 2321 on the surface of the outer ring 232. Since the second gear 222 on the gear set 22 is always meshed with the external teeth 2321, compared with the conventional locking structure that uses a telescopic rack and gear for telescopic cooperation, slippage or jamming will not occur, making it safer and more durable.

[0059] like Figure 5 As shown, the pushing device 32 is a single-acting spring reset cylinder. One end of the single-acting spring reset cylinder is driven by compressed air, and the other end is connected to the atmosphere. Reset is driven by a spring. The reset speed of the single-acting spring reset cylinder is stable and unaffected by changes in air pressure, making it safer. Moreover, the locking block 24 can be locked in one push-out action without continuous control, reducing energy consumption. In addition, since the pushing device 32 has a direct-push structure, in order to ensure that it can smoothly push one end of the clamp 31, the mounting end of the pushing device 32 has a rotating structure.

[0060] like Figure 8 and Figure 9 As shown, the surface of the winding shaft 21 is also formed with a hook 211 for winding the plate. After the plate strip is inserted into the plate hanging groove 11, the hook 211 is used to hook the plate strip tightly during the winding process of the winding shaft 21. In addition, since electric equipment is bound to malfunction during use, when a malfunction occurs, the plate hanging mechanism 20 cannot automatically hang the plate. Before the repair is completed, the printing process cannot be carried out. Based on this, in this embodiment, an extension 212 for wrench to be turned is also connected to the end of the winding shaft 21 away from the locking mechanism 30. The operator can turn the extension 212 with a wrench at this end to complete the plate hanging and ensure the effective operation of the printing process.

[0061] like Figure 3 , 6 As shown, the drive mechanism 60 used in this embodiment is a combination of a common motor 61 and a gearbox 62, which can minimize the possibility of step loss or stalling of the common motor 61, and ensure that the common motor 61 matches the load and application parameters. The number, position, size, number of teeth and other parameters of each gear in the gearbox 62 are adjusted according to the actual application and are not limited to the structure shown in the figure. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention. These equivalent modifications or substitutions are all included within the scope defined by the claims of the present invention.

[0062] Example 2

[0063] Reference Figure 14 As shown, the drive mechanism 60 used in this embodiment is a servo motor 63. The rest of the structure is the same as in Embodiment 1, and will not be described in detail below. Using a servo motor 63 allows for speed control with very accurate positioning. It can convert voltage signals into torque and speed to drive the controlled object. When the signal voltage is zero, there is no self-rotation; the speed decreases uniformly as the torque increases.

[0064] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited to the embodiments described. Those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and these equivalent modifications or substitutions are all included within the scope defined by the claims of the present invention.

Claims

1. An automatic plate-winding device, comprising a roller (10) and a drive mechanism (60) for driving the roller (10) to rotate, wherein the outer surface of the roller (10) is provided with a plate-hanging groove (11), characterized in that, Also includes: The plate hanging mechanism (20) includes a rolling shaft (21) located in the plate hanging groove (11), a gear set (22) that is connected to one end of the rolling shaft (21) for transmission, and a rotating body sleeved on the outside of one end of the roller (10); The rotating body includes an outer ring (232) that can rotate relative to the roller (10), the outer ring (232) being connected to the gear set (22) in a transmission, and the outer ring (232) is also connected to a locking block (24). Locking mechanism (30), the locking mechanism (30) includes a latch (31) that is movable to the front of the lock block (24) in the direction of rotation and locks the lock block (24). After the locking block (24) is locked by the locking piece (31), the outer ring (232) does not rotate. The gear set (22) rotates around the outer ring (232) as the roller (10) rotates, and at the same time drives the winding shaft (21) to wind the hanging plate. The gear set (22) includes a first gear (221) and a second gear (222). The first gear (221) is sleeved on one end of the winding shaft (21). The outer ring (232) has external teeth (2321) that cooperate with the gear set (22). The second gear (222) meshes with both the first gear (221) and the external teeth (2321). The roller (10) has a mounting plate (12) along the outer edge of its end along the length direction, and the second gear (222) is rotatably mounted on the mounting plate (12); The automatic plate rolling device also includes a plate unloading mechanism (40), which includes a linkage shaft (41) located in the plate hanging groove (11), a rotating frame (42) connected to both ends of the linkage shaft (41), a pawl (43) provided on the rotating frame (42), and a ratchet (44) sleeved on the outside of the rolling shaft (21). The pawl (43) cooperates with the ratchet (44). A spring (45) is also provided below the rotating frame (42). The lower end of the spring (45) is fixed to the bottom of the plate hanging groove (11), and the upper end is connected to the bottom of the rotating frame (42). Each of the rotating frames (42) is also connected to a handle (46) along the axial direction, and the mounting plate (12) is provided with a power device that can automatically press the handle (46); The automatic plate winding device also includes a reset mechanism (50), which includes a torsion spring (51). One end of the torsion spring (51) is connected to the ratchet (44), and the other end is connected to the mounting plate (12).

2. The automatic plate winding device according to claim 1, characterized in that, The locking mechanism (30) also includes a pushing device (32) and a rotating column (33). The locking member (31) is rotatable. The middle part of the locking member (31) is hinged to the rotating column (33). One end of the locking member (31) is hinged to the output end of the pushing device (32), and the other end is provided with a stop (311) for locking the locking block (24).

3. The automatic plate winding device according to claim 2, characterized in that, The pushing device (32) is a single-acting spring reset cylinder, and the mounting end of the pushing device (32) is a rotating structure.

4. The automatic plate winding device according to claim 1, characterized in that, The end of the reel (21) away from the locking mechanism (30) is also connected to an extension (212) for the wrench to turn.

5. The automatic plate winding device according to claim 1, characterized in that, The drive mechanism (60) is a combination of a common motor (61) and a gearbox (62) or a servo motor (63).

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