A film processing unidirectional drive

Abstract

The application relates to the technical field of letterpress printing, in particular to a one-way driving device for film processing, which is characterized in that a one-way bearing is connected with a first driving motor and an oil absorption roller, independent driving of the first driving motor and the oil absorption roller is realized, the first driving motor is connected with the oil absorption roller through the one-way bearing, rotation of the oil absorption roller is no longer dependent on existence of a transmission assembly, the first driving motor independently drives the oil absorption roller to continuously rotate, and the situation that oil on the surface of the oil absorption roller is dried due to long-time static because the transmission assembly cannot transmit the rotating motion to the oil absorption roller is reduced; when the transmission assembly normally operates, the first driving motor does not operate, and the one-way transmission characteristic of the one-way bearing blocks reverse torque of the oil absorption roller from being transmitted to the first driving motor, so that the probability of reverse damage of the first driving motor is reduced.

Description

Technical Field

[0001] This application relates to the field of letterpress printing technology, and in particular to a unidirectional drive device for film processing. Background Technology

[0002] The letterpress roller precisely transfers ink to the substrate through raised graphics on its surface to achieve imaging, while the smear roller absorbs and evenly releases oil. In the printing process, the smear roller transfers oil to the surface of the letterpress roller, providing a uniform lubricating layer for the letterpress roller. This ensures that the ink can accurately adhere to the raised graphics area of ​​the letterpress roller, while reducing friction, ink clogging, or wear, thereby ensuring the clarity of the printed pattern and the stability of the equipment operation.

[0003] In related technologies, when the equipment is running, the driving of the oiling roller and the letterpress roller usually depends on the same driving source, that is, a drive motor connected to multiple transmission gear sets through the output shaft, so as to realize the synchronous rotation of the two rollers. The drive motor serves as a power source, and the output shaft of the drive motor transmits power to the oiling roller and the letterpress roller through the gear sets, enabling them to rotate at a predetermined speed and direction.

[0004] However, this method has the following drawbacks: When it is necessary to produce products of different specifications, in order to meet the processing requirements of different specifications of products, it is necessary to change the letterpress rollers of different specifications, shapes or materials to achieve different processing effects. However, the existing technology cannot achieve independent control of the rotation of the oil-absorbing roller. Once the letterpress roller is removed, the transmission gear of the letterpress roller is also taken away, resulting in the lack of a key gear in the gear set. The drive motor can no longer drive the oil-absorbing roller to rotate independently. The oil on the surface of the oil-absorbing roller will dry due to long-term stillness, resulting in a decrease in the oil-absorbing effect, increasing the probability of friction and ink blockage, and thus affecting the clarity of the printed pattern and the stability of the equipment operation. Utility Model Content

[0005] To address the aforementioned problems, this application provides a unidirectional drive device for membrane processing.

[0006] This application provides a unidirectional drive device for membrane processing, which adopts the following technical solution:

[0007] A one-way drive device for film processing includes a frame, a transmission assembly, a drive assembly, and a roller assembly. The roller assembly is rotatably supported on the frame. The transmission assembly drives the roller assembly to rotate. The roller assembly includes an oil-absorbing roller, which is rotatably supported on the frame. The drive assembly includes a first drive motor and a one-way transmission component. The output shaft of the first drive motor is connected to the oil-absorbing roller through the one-way transmission component.

[0008] By adopting the above technical solution, the one-way transmission component directly connects the first drive motor to the oil-absorbing roller, so that the rotation of the oil-absorbing roller no longer depends on the existence of the transmission component. The output shaft of the first drive motor can still independently drive the oil-absorbing roller to rotate continuously through the one-way transmission component, thereby maintaining the uniform distribution and fluidity of the oil on the surface of the oil-absorbing roller. This reduces the possibility of the oil on the surface of the oil-absorbing roller drying out due to prolonged stillness when the transmission component is unable to transmit rotational motion to the oil-absorbing roller, which would lead to a decrease in the oil-absorbing effect. This ensures the lubrication effect and processing efficiency during the film processing. If the equipment is running and the oil-absorbing roller is rotating normally by the transmission component, the first drive motor stops running. The one-way transmission component can intercept the rotation of the oil-absorbing roller and transmit it back to the first drive motor in the opposite direction, reducing the possibility of reverse rotation back to the first drive motor and lowering the probability of damage to the first drive motor.

[0009] Preferably, the one-way transmission component is configured as a one-way bearing, the output shaft of the first drive motor is coaxially fixed with one side of the one-way bearing, and the other side of the one-way bearing is coaxially fixed with the oil-coating roller.

[0010] By adopting the above technical solution, when the whole machine is running, the first drive motor is not running and is in standby mode, so it does not generate torque. The torque is transmitted from the transmission component to the oil-absorbing roller. The oil-absorbing roller will try to drive the one-way bearing and the first drive motor to rotate. However, due to the one-way transmission characteristic of the one-way bearing, this torque transmission path is blocked in the reverse direction. The one-way bearing only allows the oil-absorbing roller to rotate freely in the same direction as the rotation direction of the transmission component, while providing locking in the opposite direction. Therefore, when the oil-absorbing roller tries to drive the independent motor to rotate in the opposite direction through the one-way bearing, the one-way bearing will block the rotation of the oil-absorbing roller and transmit it back to the first drive motor in the reverse direction, effectively protecting the first drive motor from the load and the probability of damage.

[0011] Preferably, a cover is provided on the frame, the cover is fixedly connected to the frame, and the cover covers the one-way transmission component.

[0012] By adopting the above technical solution, the enclosure can effectively reduce the intrusion of external dust and impurities into the one-way transmission components, thereby reducing the risk of transmission efficiency decline or failure caused by external pollution and extending the service life of the one-way transmission components.

[0013] Preferably, the roller assembly further includes a letterpress roller, which rolls in conjunction with the oiling roller and is rotatably supported on the frame.

[0014] By adopting the above technical solution, the letterpress roller is rotated and supported on the frame and rolls in cooperation with the oil-dipped roller, so that the oil-dipped roller brings ink to the letterpress roller.

[0015] Preferably, the transmission assembly includes a second drive motor and a transmission gear set, wherein a portion of the transmission gears of the transmission gear set are coaxially fixed with the output shaft of the second drive motor and the roller assembly.

[0016] By adopting the above technical solution, some of the transmission gears of the transmission gear set are coaxially fixed with the output shaft of the second drive motor and the roller assembly. The output shaft of the second drive motor rotates, which enables the second drive motor to drive the transmission gear set to rotate, and further drives the roller assembly to rotate, thus realizing the motion transmission of the second drive motor.

[0017] Preferably, the transmission gear set includes a first transmission gear and a second transmission gear, and there are multiple first transmission gears and second transmission gears. The first transmission gear is coaxially fixed to both ends of the second drive motor, the letterpress roller and the oil-coated roller, and the second transmission gear is located between the first transmission gears and meshes with them.

[0018] By adopting the above technical solution, by adding a second transmission gear between the first transmission gears, the function of the second transmission gear set is intermediate transmission. Through the meshing relationship between the second transmission gear and the first transmission gear, the power of the second drive motor is directly and efficiently transmitted to the letterpress roller through the transmission gear set, and further transmitted to the oiling roller, thereby maintaining the synchronous operation of the letterpress roller and the oiling roller.

[0019] Preferably, the first drive motor and the second drive motor are configured as servo motors.

[0020] By adopting the above technical solutions, the low-speed, high-torque output characteristics of the servo motor can adapt to the processing requirements of different materials and different coating amounts. Furthermore, the real-time torque compensation function optimizes the load distribution of the transmission gear set, reducing gear wear and transmission noise.

[0021] Preferably, it also includes a support, and the frame is slidably connected to the support.

[0022] By adopting the above technical solution, the frame can be flexibly slid and adjusted relative to the support according to the actual processing requirements, so that the position of the roller assembly and transmission assembly on the frame can be adjusted.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. By using a one-way transmission component to achieve a direct and independent connection between the first drive motor and the oil-absorbing roller, the uniformity of the oil during film processing is ensured to maintain the lubrication effect, and the occurrence of the oil on the surface of the oil-absorbing roller drying out due to prolonged stillness caused by the transmission component failing to transmit the rotational motion to the oil-absorbing roller is reduced.

[0025] 2. One side of the one-way bearing is coaxially fixed with the output shaft of the first drive motor and the other side of the one-way bearing is coaxially fixed with the oil-absorbing roller. By utilizing the one-way transmission characteristics of the one-way bearing, the torque transmission path is intercepted when the oil-absorbing roller rotates, thereby reducing the overload or damage to the first drive motor caused by the reverse movement of the oil-absorbing roller, and realizing one-way protection for the first drive motor.

[0026] 3. By setting up a cover that is fixedly connected to the frame and covering the one-way transmission component, the intrusion of external dust and impurities is effectively blocked, thereby reducing the efficiency reduction and failure risk of the transmission component due to contamination, and extending the service life of the one-way transmission component. Attached Figure Description

[0027] Figure 1 This is a structural schematic diagram of an embodiment of this application.

[0028] Figure 2 This is a schematic diagram of the connection between the oil-coating roller and the drive assembly in an embodiment of this application.

[0029] Figure 3 yes Figure 2 An enlarged diagram of A in the diagram.

[0030] Explanation of reference numerals in the attached drawings: 1. Frame; 2. Support; 3. Transmission assembly; 31. Second drive motor; 32. Transmission gear set; 321. First transmission gear; 322. Second transmission gear; 4. Roll assembly; 41. Oil-absorbing roller; 42. Letterpress roller; 5. Drive assembly; 51. First drive motor; 52. One-way transmission component; 6. Cover. Detailed Implementation

[0031] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0032] This application discloses a unidirectional drive device for membrane processing. (Refer to...) Figure 1 A unidirectional drive device for membrane processing includes a frame 1, a support 2, a transmission assembly 3, and a roller assembly 4.

[0033] Specifically, the roller assembly 4 is rotatably supported on the frame 1, and the transmission assembly 3 is used to drive the roller assembly 4 to rotate. The roller assembly 4 includes an oil-absorbing roller 41 and a letterpress roller 42. The oil-absorbing roller 41 and the letterpress roller 42 are rotatably supported on the frame 1. The letterpress roller 42 rotates and rubs against the oil-absorbing roller 41. The letterpress roller 42 is rotatably supported on the frame 1 and rolls with the oil-absorbing roller 41 so that the oil-absorbing roller 41 brings ink to the letterpress roller 42.

[0034] Correspondingly, the transmission assembly 3 includes a second drive motor 31 and a transmission gear set 32. The transmission gear set 32 ​​includes a first transmission gear 321 and a second transmission gear 322. In this embodiment, the first transmission gear 321 is provided in three sets, with two first transmission gears 321 in each set. One set of first transmission gears 321 is coaxially fixed to both ends of the second drive motor 31, and the other two sets of first transmission gears 321 are coaxially fixed to the letterpress roller 42 and the oiling roller 41.

[0035] Furthermore, the second transmission gear 322 is provided in two sets, each set including two second transmission gears 322. One set of second transmission gears 322 is coaxially fixed with the first transmission gear 321 of the second drive motor 31 and coaxially fixed with the first transmission gear 321 of the letterpress roller 42 and rotates in mutual mesh. The other set of second transmission gears 322 is coaxially fixed with the first transmission gear 321 of the letterpress roller 42 and coaxially fixed with the first transmission gear 321 of the oiling roller 41 and rotates in mutual mesh.

[0036] This explains that during equipment operation, a second transmission gear 322 is added between the first transmission gear 321. The second transmission gear 322 serves as an intermediate transmission. Through the meshing and rotation of the second transmission gear 322 and the first transmission gear 321, the output shaft of the second drive motor 31 rotates, driving the first transmission gear 321 to rotate. Since one set of the second transmission gear 322 is coaxially fixed with the first transmission gear 321 of the second drive motor 31 and coaxially fixed with the letterpress roller 42, and they mesh and rotate with each other, the power of the second drive motor 31 is directly and efficiently transmitted to the letterpress roller 42, causing the letterpress roller 42 to rotate.

[0037] To further explain, another set of second transmission gears 322 are coaxially fixed with the first transmission gear 321 of the letterpress roller 42 and coaxially fixed with the first transmission gear 321 of the oil-absorbing roller 41, and rotate in mutual mesh. The power of the second drive motor 31 is further transmitted to the oil-absorbing roller 41, thereby keeping the letterpress roller 42 and the oil-absorbing roller 41 running synchronously, so that the letterpress roller 42 and the oil-absorbing roller 41 roll together, so that the oil-absorbing roller 41 brings the ink to the letterpress roller 42.

[0038] Reference Figure 2 and Figure 3On the other hand, a one-way drive device for film processing also includes a drive assembly 5. The drive assembly 5 includes a first drive motor 51 and a one-way transmission component 52. The output shaft of the first drive motor 51 is connected to the oil-absorbing roller 41 through the one-way transmission component 52. When the equipment stops running or a letterpress roller 42 of different specifications, shapes or materials is replaced, the letterpress roller 42 is removed, reducing a set of first transmission gears 321, causing the second drive motor 31 to be unable to transmit motion to the oil-absorbing roller 41. The drive assembly 5 can still drive the oil-absorbing roller 41 to rotate independently.

[0039] This demonstrates that the one-way transmission component 52 directly connects the first drive motor 51 to the oil-absorbing roller 41, so that the rotation of the oil-absorbing roller 41 no longer depends on the existence of the transmission component 3. The output shaft of the first drive motor 51 can still independently drive the oil-absorbing roller 41 to rotate continuously through the one-way transmission component 52, thereby maintaining the uniform distribution and fluidity of the oil on the surface of the oil-absorbing roller 41. This reduces the possibility that the oil on the surface of the oil-absorbing roller 41 will dry out due to prolonged stillness when the transmission component 3 is unable to transmit rotational motion to the oil-absorbing roller 41, resulting in a decrease in the oil-absorbing effect. This ensures the lubrication effect and processing efficiency during the film processing.

[0040] In addition, if the equipment is operating normally, the oil-coating roller 41 rotates normally through the transmission assembly 3. At this time, the first drive motor 51 stops running. The one-way transmission component 52 can intercept the rotation of the oil-coating roller 41 and transmit it back to the first drive motor 51 in the opposite direction, reducing the occurrence of reverse rotation of the first drive motor 51 and reducing the probability of damage to the first drive motor 51.

[0041] Specifically, the one-way transmission component 52 is set as a one-way bearing. One side of the one-way bearing is coaxially fixed with the output shaft of the first drive motor 51, and the other side of the one-way bearing is coaxially fixed with the oil-soaking roller 41. The one-way bearing usually contains balls and achieves one-way transmission through special structures such as wedge grooves.

[0042] Correspondingly, in this embodiment, the balls inside the one-way bearing are set as balls. When the oil-absorbing roller 41 needs to rotate alone, the balls inside the one-way bearing will be in a free sliding state under the action of the wedge groove. There is no relative resistance between the first drive motor 51 and the oil-absorbing roller 41. The output shaft of the first drive motor 51 can freely drive the one-way bearing to rotate and further drive the oil-absorbing roller 41 to rotate.

[0043] On the other hand, when the equipment is running, the first drive motor 51 does not run and is in standby mode, and does not generate torque. The torque is generated from the second drive motor 31 and transmitted to the oil-absorbing roller 41. The oil-absorbing roller 41 will try to drive the one-way bearing and the first drive motor 51 to rotate. However, due to the one-way transmission characteristic of the one-way bearing, the balls inside the one-way bearing will be wedged into the narrow area of ​​the wedge groove, forming a rigid locking state. At this time, the torque transmission path of the oil-absorbing roller 41 is intercepted by the one-way bearing in the reverse direction, thereby cutting off the rotational motion transmission between the oil-absorbing roller 41 and the motor, reducing the probability that the first drive motor 51 will be driven in the reverse direction.

[0044] Therefore, when the oil-coating roller 41 attempts to drive the independent motor to rotate in the opposite direction via the one-way bearing, the one-way bearing will intercept the rotation of the oil-coating roller 41 and transmit it back to the first drive motor 51 in the opposite direction, effectively protecting the first drive motor 51 from the load and the probability of damage.

[0045] Furthermore, a cover 6 is also provided on the frame 1. The cover 6 is fixedly connected to the frame 1. The cover 6 covers the one-way transmission component 52, which can effectively reduce the intrusion of external dust and impurities into the one-way transmission component 52, thereby reducing the risk of transmission efficiency reduction or failure caused by external pollution and extending the service life of the one-way transmission component 52.

[0046] Meanwhile, the frame 1 is slidably connected to the support 2, allowing the frame 1 to be flexibly slidably adjusted relative to the support 2 according to actual processing requirements, so that the position of the roller assembly 4 and the transmission assembly 3 on the frame 1 can be adjusted.

[0047] In addition, both the first drive motor 51 and the second drive motor 31 are set as servo motors. The low-speed, high-torque output characteristics of servo motors can adapt to the processing requirements of different materials and different coating amounts. Furthermore, the load distribution of the transmission gear set 32 ​​is optimized through the real-time torque compensation function, which reduces gear wear and transmission noise.

[0048] The implementation principle of a unidirectional drive device for membrane processing according to an embodiment of this application is as follows:

[0049] A unidirectional drive device for film processing uses a frame as its support base. The frame slides on a support to adapt to different processing position requirements. The oil-coating roller and the letterpress roller rotate and are supported on the frame, forming a rolling engagement relationship to ensure that the oil can be transferred evenly.

[0050] The output shaft of the second drive motor, the letterpress roller, and the oil-absorbing roller are coaxially fixed with a set of first transmission gears. There are two sets of second transmission gears, which mesh with the first transmission gears coaxially fixed with the letterpress roller and the oil-absorbing roller, respectively, to ensure that the letterpress roller and the oil-absorbing roller rotate synchronously and roll together, so that the letterpress roller and the oil-absorbing roller roll together, so that the oil-absorbing roller can bring the ink to the letterpress roller.

[0051] When the letterpress roller is replaced and withdrawn, thereby reducing one set of the first transmission gear, and the oil-absorbing roller needs to be driven independently, the first drive motor is started to drive the oil-absorbing roller to rotate. The first drive motor and the oil-absorbing roller are connected through a one-way bearing. At this time, the balls inside the one-way bearing roll freely in the wedge groove, so that the torque of the first drive motor can be directly transmitted to the oil-absorbing roller, maintaining the rotation of the oil-absorbing roller to reduce the occurrence of the oil drying on the oil-absorbing roller.

[0052] When the equipment is working normally, the first drive motor stops, and the oil-coating roller rotates by transmitting torque through the second drive motor. The one-way bearing will automatically lock the reverse transmission path, and the balls inside the bearing will be wedged into the narrow area to form a rigid lock, effectively intercepting the torque of the oil-coating roller from being transmitted to the second drive motor, reducing the probability of the second drive motor being damaged by reverse rotation.

[0053] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A unidirectional drive device for membrane processing, characterized in that, The assembly includes a frame (1), a transmission assembly (3), a drive assembly (5), and a roller assembly (4). The roller assembly (4) is rotatably supported on the frame (1). The transmission assembly (3) drives the roller assembly (4) to rotate. The roller assembly (4) includes an oil-absorbing roller (41), which is rotatably supported on the frame (1). The drive assembly (5) includes a first drive motor (51) and a one-way transmission component (52). The output shaft of the first drive motor (51) is connected to the oil-absorbing roller (41) through the one-way transmission component (52). The one-way transmission component (52) is configured as a one-way bearing. The output shaft of the first drive motor (51) is coaxially fixed with one side of the one-way bearing, and the other side of the one-way bearing is coaxially fixed with the oil-coating roller (41). A cover (6) is provided on the frame (1), the cover (6) is fixedly connected to the frame (1), and the cover (6) covers the one-way transmission member (52).

2. The unidirectional drive device for membrane processing according to claim 1, characterized in that, The roller assembly (4) also includes a letterpress roller (42), which is in rolling cooperation with the oil-dipped roller (41), and the letterpress roller (42) is rotatably supported on the frame (1).

3. The unidirectional drive device for membrane processing according to claim 2, characterized in that, The transmission assembly (3) includes a second drive motor (31) and a transmission gear set (32), wherein a portion of the transmission gears of the transmission gear set (32) are coaxially fixed with the output shaft of the second drive motor (31) and the roller assembly (4).

4. The unidirectional drive device for membrane processing according to claim 3, characterized in that, The transmission gear set (32) includes a first transmission gear (321) and a second transmission gear (322). There are several of the first transmission gear (321) and the second transmission gear (322). The first transmission gear (321) is coaxially fixed to both ends of the second drive motor (31), the letterpress roller (42) and the oil-soaking roller (41). The second transmission gear (322) is located between the first transmission gear (321) and meshes with each other.

5. A unidirectional drive device for membrane processing according to claim 3, characterized in that, The first drive motor (51) and the second drive motor (31) are configured as servo motors.

6. A unidirectional drive device for membrane processing according to claim 1, characterized in that, It also includes a support (2), on which the frame (1) is slidably connected.

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