A material dispensing apparatus and a flexible material printing apparatus

Abstract

The embodiment of the application relates to the technical field of digital printing, and discloses a material winding and unwinding device and a flexible material printing equipment, the material winding and unwinding device comprises a rack, a winding and unwinding mechanism, a driving mechanism and a material guiding mechanism, the winding and unwinding mechanism is arranged on the rack, the winding and unwinding mechanism comprises a first winding and unwinding shaft and a second winding and unwinding shaft, the first winding and unwinding shaft is used for winding and unwinding wide-width material, the second winding and unwinding shaft is used for winding and unwinding multiple rolls of narrow-width material at different positions in the axial direction of the second winding and unwinding shaft, the driving mechanism is in transmission connection with the winding and unwinding mechanism and is used for independently driving the first winding and unwinding shaft and the second winding and unwinding shaft to rotate so as to realize winding and unwinding of the material, and the material guiding mechanism is arranged between the winding and unwinding mechanism and a printing plane and is used for guiding the material to be conveyed to the printing plane. In the above manner, the embodiment of the application can realize flexible switching of wide-width material and narrow-width material printing modes.

Description

Technical Field

[0001] This application relates to the field of digital printing technology, and in particular to a roll take-up and unrolling device and a flexible material printing device. Background Technology

[0002] UV digital inkjet printing technology is widely used in the printing and processing of flexible materials, among which belt-type printing equipment has become the mainstream in the market due to its ability to achieve continuous feeding and high-efficiency production. In high-end wide-width belt machines, the roll take-up and unwinding device usually adopts an air-expansion shaft structure, which uses air pressure expansion to achieve rapid loading and unloading and stable conveying of the roll material.

[0003] In implementing this application, the inventors discovered that most conveyor belt unloading and take-up devices on the market currently use a single air shaft configuration, which can only support the loading and printing of a single roll of material. While this design can fully utilize the equipment's capacity when handling wide-width materials, in actual production, the effective printing width of the equipment is not fully utilized when printing narrow-width materials. Because it is impossible to load and print two rolls of narrow-width material simultaneously on the same machine, equipment utilization decreases, production efficiency is low, and the need for rapid delivery of multi-variety, small-batch orders cannot be met. Utility Model Content

[0004] The main technical problem solved by the embodiments of this application is to provide a roll take-up and unwrap device that can flexibly switch between wide and narrow material printing modes. When wide material needs to be printed, a first take-up and unwrap shaft can be used to take up and unwrap a single roll of material. When narrow material needs to be printed, a second take-up and unwrap shaft can be used to carry multiple rolls of narrow material at different positions along its axial direction for take-up and unwrap operations, making full use of the effective printing width of the equipment and improving equipment utilization and production efficiency.

[0005] To solve the above-mentioned technical problems, one technical solution adopted in this application embodiment is: providing a material roll take-up and unwinding device, including a frame, a take-up and unwinding mechanism, a drive mechanism, and a material guiding mechanism. The take-up and unwinding mechanism is disposed on the frame and includes a first take-up and unwinding shaft and a second take-up and unwinding shaft. The first take-up and unwinding shaft is used for take-up and unwinding of wide-width materials, and the second take-up and unwinding shaft is used for taking up and unwinding multiple rolls of narrow-width materials at different positions along its axial direction. The drive mechanism is connected to the take-up and unwinding mechanism and is used to independently drive the first take-up and unwinding shaft and the second take-up and unwinding shaft to rotate to realize the take-up and unwinding of materials. The material guiding mechanism is disposed between the take-up and unwinding mechanism and the printing plane and is used to guide the material to be conveyed to the printing plane.

[0006] Optionally, the material guiding mechanism includes a first material guiding roller, which is disposed below the first take-up and release shaft and between the first take-up and release shaft and the printing plane. When printing wide material, the wide material is placed on the first take-up and release shaft, and the driving mechanism drives the first take-up and release shaft to rotate to realize the take-up and release of the material. The wide material is conveyed to the printing plane after passing around the first material guiding roller.

[0007] Optionally, the material guiding mechanism further includes a second material guiding roller, which is disposed below the first take-up and release shaft and between the second take-up and release shaft and the first material guiding roller. When printing narrow-width material, multiple rolls of narrow-width material are placed at different axial positions on the second take-up and release shaft. The driving mechanism drives the second take-up and release shaft to rotate to realize the take-up and release of the material. The narrow-width material first passes around the second material guiding roller, then passes around the first material guiding roller, and is then conveyed to the printing plane.

[0008] Optionally, the driving mechanism includes a first driving motor, which is connected to the first take-up and put-down shaft for driving the first take-up and put-down shaft to rotate in order to take up and put down wide materials.

[0009] Optionally, the driving mechanism further includes a second driving motor, which is connected to the second take-up and put-down shaft for driving the second take-up and put-down shaft to rotate in order to take up and put down narrow materials.

[0010] Optionally, the drive motor further includes a third drive motor. One end of the second take-up and untake-down shaft is connected to the second drive motor, and the other end of the second take-up and untake-down shaft is connected to the third drive motor. The second drive motor and the third drive motor control the rotation speed at both ends of the second take-up and untake-down shaft, respectively. When multiple rolls of narrow-width material carried on the second take-up and untake-down shaft have different roll diameters, the second drive motor and the third drive motor rotate at different speeds to achieve synchronous take-up and untake-down of narrow-width material with different roll diameters.

[0011] Optionally, the frame includes a first bracket, a second bracket, and a support portion. The first bracket and the second bracket are disposed relative to the support portion. The two ends of the take-up and release mechanism are respectively fixed to the first bracket and the second bracket, and the two ends of the material guiding mechanism are respectively fixed to the first bracket and the second bracket. The support member is disposed at the bottom of the frame and is used to support the first bracket and the second bracket.

[0012] Optionally, the first take-up shaft and the second take-up shaft are arranged in parallel, and the frame is also provided with bearing seats, with the two ends of the first take-up shaft and the second take-up shaft respectively rotatably supported on the frame through the bearing seats.

[0013] Optionally, both the first and second take-up shafts are air shafts. The air shaft includes a shaft body and an air bladder. The air bladder is disposed on the outer peripheral surface of the shaft body. The air bladder expands by inflating to clamp the material core, and the air bladder contracts by deflating to release the material core.

[0014] To solve the above-mentioned technical problems, another technical solution adopted in the embodiments of this application is to provide a flexible material printing device, including any of the above-mentioned roll take-up and unwinding devices.

[0015] This application provides a material winding and unwinding device, including a frame, a winding and unwinding mechanism, a drive mechanism, and a material guiding mechanism. The winding and unwinding mechanism is disposed on the frame and includes a first winding and unwinding shaft and a second winding and unwinding shaft. The first winding and unwinding shaft is used for winding and unwinding wide-width materials, and the second winding and unwinding shaft is used for winding and unwinding multiple rolls of narrow-width materials at different axial positions. The drive mechanism is connected to the winding and unwinding mechanism and is used to independently drive the first winding and unwinding shaft and the second winding and unwinding shaft to rotate to realize the winding and unwinding of materials. The material guiding mechanism is disposed between the winding and unwinding mechanism and the printing plane and is used to guide the material to be conveyed to the printing plane. By setting the first winding and unwinding shaft and the second winding and unwinding shaft on the frame, wide-width materials and narrow-width materials can be wound and unwound. The flexible switching of material printing modes allows for the use of the first take-up and untake-down shaft for single-roll material loading and unloading when printing wide-width materials. Conversely, the second take-up and untake-down shaft can simultaneously carry multiple rolls of narrow-width material at different axial positions when printing narrow-width materials, fully utilizing the equipment's effective printing width and improving equipment utilization and production efficiency. Furthermore, the drive mechanism can independently drive both the first and second take-up and untake-down shafts, ensuring independence and operational flexibility between the two printing modes. This allows the equipment to quickly switch working modes according to actual production needs. The material guiding mechanism ensures that materials are smoothly and reliably conveyed to the printing plane in both single-roll and multi-roll modes, guaranteeing stable print quality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the winding and unwinding device according to an embodiment of this application; Figure 2 This is another schematic diagram of the winding and unwinding device according to an embodiment of this application; Figure 3 This is another schematic diagram of the winding and unwinding device according to an embodiment of this application.

[0018] The reference numerals in the attached drawings of the specific embodiments are as follows: 100, winding and unwinding device; 10, frame; 11, first support; 12, second support; 13, support part; 20, winding and unwinding mechanism; 21, first winding and unwinding shaft; 22, second winding and unwinding shaft; 30, drive mechanism; 31, first drive motor; 32, second drive motor; 33, third drive motor; 40, guiding mechanism; 41, first guide roller; 42, second guide roller. Detailed Implementation

[0019] To facilitate understanding of this application, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on the other element, or one or more intermediate elements may exist between them. When an element is described as "connected" to another element, it can be directly connected to the other element, or one or more intermediate elements may exist between them. The terms "upper," "lower," "inner," "outer," "vertical," "horizontal," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0020] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0021] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0022] As attached Figure 1 As shown, this embodiment provides a roll take-up and unwinding device 100, which is applied to flexible material printing equipment, and is particularly suitable for UV digital inkjet printing belt-type printing equipment. The roll take-up and unwinding device 100 includes a frame 10, a take-up and unwinding mechanism 20, a drive mechanism 30, and a material guiding mechanism 40.

[0023] Please see Figure 2The frame 10 includes a first support 11, a second support 12, and a support portion 13. The first support 11 and the second support 12 are arranged opposite to each other, and the support portion 13 is located at the bottom of the frame 10 to support the first support 11 and the second support 12, ensuring the stability of the entire device. The frame 10 is also provided with bearing seats for rotatably supporting the various take-up and take-down shafts in the take-up and take-down mechanism 20.

[0024] The take-up and untake-down mechanism 20 is mounted on the frame 10 and includes a first take-up and untake-down shaft 21 and a second take-up and untake-down shaft 22. The first take-up and untake-down shaft 21 is used for take-up and untake-down operations of wide-width materials, and the second take-up and untake-down shaft 22 is used for take-up and untake-down operations of multiple rolls of narrow-width materials at different positions along its axial direction. The first take-up and untake-down shaft 21 and the second take-up and untake-down shaft 22 are arranged in parallel, and their two ends are rotatably supported on the first support 11 and the second support 12 by bearing seats, respectively, so that the first take-up and untake-down shaft 21 and the second take-up and untake-down shaft 22 can rotate flexibly to realize the material take-up and untake-down function.

[0025] In this embodiment, both the first take-up shaft 21 and the second take-up shaft 22 adopt an air-expansion shaft structure. The air-expansion shaft includes a shaft body and an air bladder, with the air bladder disposed on the outer circumferential surface of the shaft body. During use, the air bladder inflates to clamp the material roll core, ensuring the material roll is firmly fixed to the take-up shaft. When material needs to be replaced, the air bladder deflates to release the material roll core, facilitating rapid unloading and loading, and significantly improving material replacement efficiency.

[0026] Please see Figure 2 The drive mechanism 30 is connected to the take-up and release mechanism 20, and is used to independently drive the first take-up and release shaft 21 and the second take-up and release shaft 22 to rotate to realize the take-up and release of materials. Specifically, the drive mechanism 30 includes a first drive motor 31, a second drive motor 32, and a third drive motor 33. The first drive motor 31 is connected to the first take-up and release shaft 21 and is used to drive the first take-up and release shaft 21 to rotate to realize the take-up and release of wide materials. The second drive motor 32 and the third drive motor 33 are respectively connected to both ends of the second take-up and release shaft 22 and are used to drive the second take-up and release shaft 22 to rotate to realize the take-up and release of narrow materials.

[0027] Please see Figure 3The material guiding mechanism 40 is disposed between the take-up and release mechanism 20 and the printing plane to guide the material smoothly to the printing plane. The material guiding mechanism 40 includes a first guide roller 41 and a second guide roller 42. The first guide roller 41 is disposed below the first take-up and release shaft 21 and between the first take-up and release shaft 21 and the printing plane. The second guide roller 42 is disposed below the first take-up and release shaft 21 and between the second take-up and release shaft 22 and the first guide roller 41. Both the first guide roller 41 and the second guide roller 42 are rotatably mounted on the frame 10, and their two ends are fixed to the first support 11 and the second support 12, respectively. The axis of the second guide roller 42 is parallel to the axis of the first guide roller 41 to ensure that the material remains stable during the conveying process and to avoid twisting or deviation.

[0028] In this application, the winding and unwinding device 100, through the above-mentioned settings, realizes flexible switching between wide-width and narrow-width material printing modes, effectively improving the adaptability and production efficiency of the equipment.

[0029] When printing wide-format material, the operator places the wide-format material roll onto the first take-up and untake-down shaft 21. The specific operation process is as follows: first, the air bladder on the first take-up and untake-down shaft 21 is deflated and contracted; then, the core of the wide-format material roll is fitted onto the shaft of the first take-up and untake-down shaft 21; subsequently, the air bladder is inflated to make it expand. After the air bladder expands, it tightly clamps the material core, ensuring that the material roll is firmly fixed and will not slip during rotation.

[0030] After loading is complete, the first drive motor 31 starts and drives the first take-up and unload shaft 21 to rotate, realizing the unloading action of the wide material. The wide material unfolds from the first take-up and unload shaft 21, moves downward and passes around the first guide roller 41. The first guide roller 41 guides and supports the material, changing the direction of movement and maintaining appropriate tension. After passing around the first guide roller 41, the material continues to be conveyed downward to the printing plane, where UV digital inkjet printing is performed.

[0031] During the printing process, the first drive motor 31 controls the rotation speed of the first take-up and unwind shaft 21 according to the printing speed requirements, ensuring that the material is conveyed to the printing plane at a constant speed and tension. After printing is completed, the first drive motor 31 drives the first take-up and unwind shaft 21 in the reverse direction to achieve the material winding action, retracting the printed material roll onto the first take-up and unwind shaft 21.

[0032] The working mode of this embodiment makes full use of the effective length of the first take-up and untake-down shaft 21, which is suitable for handling single rolls of material with a large width and meets the needs of large-format printing. The entire material conveying path is simple and clear, and it only needs to be guided by the first guide roller 41 to reach the printing plane, ensuring the stability of material conveying and printing quality.

[0033] When printing narrow-width material, the operator places multiple rolls of narrow-width material at different axial positions on the second take-up and unwind shaft 22. Specifically, the second take-up and unwind shaft 22 has sufficient axial length to simultaneously accommodate two or more rolls of narrow-width material at different positions along its length. The operator first deflates and contracts the air bladder on the second take-up and unwind shaft 22, then places the core of the first roll of narrow-width material onto the end of the second take-up and unwind shaft 22 near the second drive motor 32, and places the core of the second roll of narrow-width material onto the end of the second take-up and unwind shaft 22 near the third drive motor 33. After loading, the air bladder is inflated, causing it to grip both material cores, ensuring that both rolls of material are securely fixed to the second take-up and unwind shaft 22.

[0034] After loading is completed, the second drive motor 32 and the third drive motor 33 start simultaneously and drive the second take-up and unwrap shaft 22 to rotate, realizing the unloading action of the narrow material. Since the second drive motor 32 and the third drive motor 33 are respectively connected to the two ends of the second take-up and unwrap shaft 22, when the two drive motors rotate synchronously, the second take-up and unwrap shaft 22 rotates as a whole, and the two rolls of narrow material are unwrapped from the second take-up and unwrap shaft 22 at the same time.

[0035] After two rolls of narrow-width material are unwound from the second take-up / unwind shaft 22, they move downwards and first pass over the second guide roller 42. The second guide roller 42, located between the second take-up / unwind shaft 22 and the first guide roller 41, provides initial guidance and support to the two rolls of material, changing their direction of movement. After passing over the second guide roller 42, the material continues downwards and then passes over the first guide roller 41. The first guide roller 41 provides a second guidance, further adjusting the material's direction of movement and tension. After being guided sequentially by the second guide roller 42 and the first guide roller 41, the two rolls of narrow-width material are conveyed side-by-side to the printing plane, where UV digital inkjet printing is performed simultaneously.

[0036] During printing, the second drive motor 32 and the third drive motor 33 can synchronously control the rotation speed of the second take-up and unwind shaft 22 according to the printing speed requirements, ensuring that the two rolls of material are conveyed to the printing plane at the same linear speed and with appropriate tension. Since the two narrow rolls of material are placed side-by-side on the printing plane, the effective printing width of the equipment is fully utilized, effectively completing two independent printing tasks simultaneously, thus improving production efficiency. After printing is completed, the second drive motor 32 and the third drive motor 33 synchronously drive the second take-up and unwind shaft 22 in opposite directions to achieve the material winding action, simultaneously retracting the two printed rolls of material onto the second take-up and unwind shaft 22.

[0037] The operating mode of this embodiment is suitable for mass production of narrow-width materials. By simultaneously carrying multiple rolls of material on a single take-up and untake-down shaft, it effectively solves the problem of low equipment utilization when printing narrow-width materials in the prior art. The entire material conveying path is guided by two stages of guide rollers, ensuring that multiple rolls of material remain parallel and stable during the conveying process, avoiding mutual interference between materials, and guaranteeing the consistency of print quality.

[0038] In actual production, due to differences in material consumption rates or the initial material roll diameter, the two rolls of narrow-width material on the second take-up shaft 22 may have different roll diameters. For example, the first roll of material near the second drive motor 32 has a diameter of 200 mm, while the second roll of material near the third drive motor 33 has a diameter of 150 mm. In this case, if the second drive motor 32 and the third drive motor 33 drive the second take-up shaft 22 at the same speed, their linear velocities will differ due to the different roll diameters. The material with the larger roll diameter will have a faster linear velocity, while the material with the smaller roll diameter will have a slower linear velocity, causing the two rolls of material to fail to reach the printing plane synchronously, affecting printing efficiency and quality. To solve this problem, in this embodiment, the second drive motor 32 and the third drive motor 33 have the function of independently controlling their rotational speeds. One end of the second take-up shaft 22 is connected to the second drive motor 32, and the other end is connected to the third drive motor 33. The second drive motor 32 and the third drive motor 33 control the rotational speeds of the two ends of the second take-up shaft 22, respectively. The external control system calculates the required rotational speed for each roll of material based on their actual diameters, ensuring that the linear velocities of the two rolls remain consistent.

[0039] Specifically, the external control system can detect the diameter of the two rolls of material in real time via sensors, or the operator can input the initial roll diameter parameters into the system. Based on the relationship between roll diameter and linear velocity (linear velocity equals angular velocity multiplied by radius), the control system calculates the appropriate rotational speeds for the second drive motor 32 and the third drive motor 33. For materials with larger roll diameters, the corresponding drive motor rotates at a lower speed. For materials with smaller roll diameters, the corresponding drive motor rotates at a higher speed. This differential speed control ensures that both rolls of material unwind from the second take-up / unwind shaft 22 at the same linear velocity.

[0040] During the printing process, after the material is unwound from the second take-up and unwrap shaft 22, it passes sequentially around the second guide roller 42 and the first guide roller 41. The two narrow rolls of material are conveyed side by side and synchronously to the printing plane for printing. Due to the precise synchronous control, the positional relationship between the two rolls of material on the printing plane remains stable, avoiding problems such as printing misalignment or material accumulation caused by asynchronous material conveying.

[0041] This application provides a material winding and unwinding device 100, including a frame 10, a winding and unwinding mechanism 20, a drive mechanism 30, and a material guiding mechanism 40. The winding and unwinding mechanism 20 is disposed on the frame 10 and includes a first winding and unwinding shaft 21 and a second winding and unwinding shaft 22. The first winding and unwinding shaft 21 is used for winding and unwinding wide-width materials, and the second winding and unwinding shaft 22 is used for winding and unwinding multiple rolls of narrow-width materials at different axial positions. The drive mechanism 30 is connected to the winding and unwinding mechanism 20 and is used to independently drive the first winding and unwinding shaft 21 and the second winding and unwinding shaft 22 to rotate to realize the winding and unwinding of materials. The material guiding mechanism 40 is disposed between the winding and unwinding mechanism 20 and the printing plane and is used to guide the material to the printing plane. By setting the first winding and unwinding shaft 21 and the second winding and unwinding shaft 22 on the frame 10, the device achieves material winding and unwinding. The release shaft 22 enables flexible switching between wide and narrow material printing modes. When printing wide materials, the first release shaft 21 can be used for single-roll release and take-up operations. When printing narrow materials, the second release shaft 22 can be used to simultaneously carry multiple rolls of narrow materials at different positions along its axis, making full use of the equipment's effective printing width and improving equipment utilization and production efficiency. Furthermore, the drive mechanism 30 can independently drive the first release shaft 21 and the second release shaft 22, ensuring the independence and operational flexibility between the two printing modes. This allows the equipment to quickly switch working modes according to actual production needs. The material guiding mechanism 40 ensures that the material can be smoothly and reliably conveyed to the printing plane in both single-roll and multi-roll modes, ensuring the stability of printing quality.

[0042] This application also provides a flexible material printing device, which is a professional device for printing graphics on various flexible substrates and is widely used in advertising signage, textile printing, packaging materials, decorative materials, and other fields. The device mainly includes a roll-up / unroller device 100, a printing platform, a printing system, a control system, and other auxiliary systems. The roll-up / unroller device 100 adopts the technical solution described in the foregoing embodiments and is located at the feeding end or the discharging end of the flexible material printing device. When the roll-up / unroller device 100 is used as a feeding device, it is responsible for unrolling the flexible material roll to be printed and conveying it to the printing platform. When the roll-up / unroller device 100 is used as a discharging device, it is responsible for winding up and storing the printed flexible material. In some equipment configurations, the feeding end and the discharging end can be equipped with roll-up / unroller devices 100 respectively to achieve continuous material supply and collection.

[0043] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A winding and unwinding device, characterized in that, include: frame; The take-up and untake-down mechanism, disposed on the frame, includes a first take-up and untake-down shaft and a second take-up and untake-down shaft. The first take-up and untake-down shaft is used for take-up and untake-down of wide-width materials, and the second take-up and untake-down shaft is used to carry multiple rolls of narrow-width materials at different positions along its axial direction. A drive mechanism, which is connected to the take-up and release mechanism, is used to independently drive the first take-up and release shaft and the second take-up and release shaft to rotate in order to take up and release the material. A material guiding mechanism is located between the receiving and dispensing mechanism and the printing plane, and is used to guide the material to be conveyed to the printing plane.

2. The winding and unwinding device according to claim 1, characterized in that, The material guiding mechanism includes a first material guiding roller, which is disposed below the first take-up and release shaft and between the first take-up and release shaft and the printing plane. When printing wide-width material, the wide-width material is placed on the first take-up and release shaft. The drive mechanism drives the first take-up and release shaft to rotate to realize the take-up and release of the material. The wide-width material is conveyed to the printing plane after passing around the first guide roller.

3. The winding and unwinding device according to claim 2, characterized in that, The material guiding mechanism further includes a second guide roller, which is disposed below the first take-up and release shaft and between the second take-up and release shaft and the first guide roller. When printing narrow-width material, multiple rolls of narrow-width material are placed at different axial positions on the second take-up and untake-down shaft. The drive mechanism drives the second take-up and untake-down shaft to rotate to realize the take-up and untake-down of the material. The narrow-width material first passes around the second guide roller, then passes around the first guide roller, and is then conveyed to the printing plane.

4. The winding and unwinding device according to claim 2, characterized in that, The driving mechanism includes a first driving motor, which is connected to the first take-up and release shaft for driving the first take-up and release shaft to rotate in order to take up and release wide materials.

5. The winding and unwinding device according to claim 3, characterized in that, The driving mechanism further includes a second driving motor, which is connected to the second take-up and release shaft for driving the second take-up and release shaft to rotate in order to take up and release narrow materials.

6. The winding and unwinding device according to claim 5, characterized in that, The drive motor further includes a third drive motor. One end of the second take-up and release shaft is connected to the second drive motor, and the other end of the second take-up and release shaft is connected to the third drive motor. The second drive motor and the third drive motor respectively control the rotational speed of the two ends of the second take-up and release shaft. When multiple rolls of narrow-width material with different diameters are carried on the second take-up and untake-down shaft, the second drive motor and the third drive motor rotate at different speeds to achieve synchronous take-up and untake-down of narrow-width material with different diameters.

7. The winding and unwinding device according to claim 1, characterized in that, The frame includes a first bracket, a second bracket, and a support portion. The first bracket and the second bracket are disposed relative to the support portion. The two ends of the take-up and release mechanism are respectively fixed to the first bracket and the second bracket, and the two ends of the material guiding mechanism are respectively fixed to the first bracket and the second bracket. The support portion is disposed at the bottom of the frame and is used to support the first bracket and the second bracket.

8. The winding and unwinding device according to claim 1, characterized in that, The first take-up shaft and the second take-up shaft are arranged in parallel. The frame is also provided with a bearing seat. The two ends of the first take-up shaft and the second take-up shaft are rotatably supported on the frame through the bearing seat.

9. The winding and unwinding device according to claim 1, characterized in that, Both the first and second take-up shafts are air shafts. Each air shaft includes a shaft body and an air bladder. The air bladder is disposed on the outer circumferential surface of the shaft body. The air bladder expands by inflating to clamp the material core and contracts by deflating to release the material core.

10. A flexible material printing device, characterized in that, Includes the winding and unwinding device as described in any one of claims 1-9.

Images