An adjustable continuous roll printing curling device

Abstract

This utility model discloses an adjustable continuous roll-to-roll printing device, including a frame and a rolling mechanism. The rolling mechanism comprises a central cylinder and a friction-type rotary drive mechanism. The friction-type rotary drive mechanism achieves rotational drive through frictional contact with the outer circumferential wall of the central cylinder. A connecting shaft passes through the hollow central cylinder, and slots are provided at both ends of the connecting shaft. The frame is equipped with unlockable fixing components that engage with the slots, allowing the central cylinder and connecting shaft to be replaced as a whole. The central cylinder also has an adjusting component and circumferentially distributed elastic support members. The adjusting component can drive the elastic support members to synchronously displace radially, changing the effective winding diameter. This utility model adopts a frictional non-rigid drive combined with a quick-release slot structure, allowing for rapid changeover without disassembling the transmission components; it can uniformly adjust the winding diameter, adapting to different materials and thicknesses of roll materials, ensuring smooth winding operation, and offering strong versatility, making it suitable for continuous roll-to-roll printing operations.

Description

Technical Field

[0001] This utility model specifically relates to an adjustable continuous roll printing curling device. Background Technology

[0002] In existing roll-to-roll printing technologies, for continuous roll-to-roll printing, a fixed-diameter take-up mechanism is often used to complete the winding operation. On the one hand, the rollers of traditional take-up mechanisms are mostly connected to the transmission system through rigid components such as couplings and gears. The rollers are usually fixed by locking with nuts. When changing to different sizes of cylindrical printing substrates or changing the rollers, it is necessary to use tools to tighten the nuts and disassemble multiple components such as the transmission pair and bearing seats. The operation steps are cumbersome, the downtime for changing types is long, and it seriously affects the efficiency of continuous printing. Utility Model Content

[0003] In view of the defects of the existing technology, the technical problem to be solved by this utility model is to provide an adjustable continuous roll printing curling device.

[0004] An adjustable continuous roll-to-roll printing curling device includes a frame and a curling mechanism mounted on the frame for driving the substrate to curl. The curling mechanism comprises a central cylinder and a friction-type rotary drive mechanism. The friction-type rotary drive mechanism rubs against the outer peripheral wall of the central cylinder to drive the central cylinder to rotate around its own axis. The central cylinder has an internally hollow structure along its axial direction, with a connecting shaft inserted into its inner side. Both ends of the connecting shaft are movably connected to the frame via bearings. Bearings are provided between the connecting shaft and the central cylinder to achieve relative rotation between them. The sidewalls at both ends of the connecting shaft are recessed along their circumference to form grooves. Fixing components are provided on the frame at positions corresponding to both ends of the connecting shaft. The fixing components are engaged in the grooves to achieve axial limiting of the connecting shaft. The fixing components can be unlocked and disengaged from the grooves.

[0005] In one embodiment, the fixing assembly includes a rotating component rotatably mounted on a frame, and a limiting component for locking the rotation of the rotating component; the rotating component has a toothed groove and a circular hole coaxially arranged on the side facing the connecting shaft, the circular hole being located at the center of the toothed groove; the limiting component includes a fixed shaft, a gear fixedly mounted on the fixed shaft, and a spring, the fixed shaft being movably inserted into the frame, and the fixed shaft being movably inserted into the circular hole and capable of rotating relative to the circular hole, a limiting block being provided at the end of the fixed shaft away from the rotating component; the spring is sleeved on the fixed shaft, and its two ends abut against the limiting block and the frame respectively, for providing elastic force to keep the gear engaged in the toothed groove connection state.

[0006] In one embodiment, the central cylinder is provided with an adjustment component and several elastic support components. The several elastic support components are evenly distributed around the outer side of the central cylinder and can be displaced radially along the central cylinder. The adjustment component is connected to the several elastic support components and is used to drive the several elastic support components to make synchronous radial displacement relative to the central cylinder, so as to change the effective diameter of the winding working surface.

[0007] In one embodiment, the adjusting member includes an adjusting ring that is rotatably sleeved on the outer side of the central cylinder via a bearing, and a locking assembly for locking the adjusting ring to rotate. The adjusting ring and the elastic support are connected by connecting rods in a one-to-one correspondence.

[0008] In one embodiment, the locking assembly includes a spring pin disposed on the outer periphery of the central cylinder and capable of elastically extending and retracting along the axial direction of the central cylinder, and the adjusting ring has a plurality of pin holes evenly distributed along the circumference that can be inserted and engaged with the spring pin.

[0009] In one embodiment, the elastic support is a combination structure of a spring metal sheet or an elastic rubber block and a skeleton.

[0010] In one embodiment, the friction-type rotary drive mechanism includes two sets of conveyor belt assemblies respectively disposed at both ends of the central cylinder, and a drive device for driving the conveyor belt assemblies to run; each set of conveyor belt assemblies includes a driving wheel, a driven wheel, and a conveyor belt wound around the driving wheel and the driven wheel, the conveyor belt being in contact with the outer peripheral wall of the central cylinder, and the drive device being drively connected to the driving wheel.

[0011] In one embodiment, the drive wheels of the two sets of conveyor belt assemblies are connected by a synchronous shaft drive to achieve synchronous operation of the two conveyor belts.

[0012] In one embodiment, the driving device is a geared motor, and the output shaft of the geared motor is coaxially and fixedly connected to the drive wheel.

[0013] In summary, the advantages of this utility model over the prior art are:

[0014] This utility model adopts a friction-type rotary drive mechanism, which transmits rotational torque through the surface contact between the conveyor belt and the outer peripheral wall of the central cylinder, eliminating the need for a rigid transmission connection with the central cylinder. With the quick-release installation structure of the connecting shaft slot and the frame fixing component, the drive end and roller can be directly separated when changing the winding body. The axial limit can be released by pressing the unlocking fixing component, and the central cylinder along with the connecting shaft can be replaced as a whole without the need for tools or disassembling the transmission system and adjustment components. This eliminates the limitations of the traditional winding mechanism's rigid binding with the substrate and the cumbersome nut disassembly and assembly, significantly shortening the downtime for changing models and effectively improving the efficiency and applicability of continuous roll printing.

[0015] By adjusting the components to drive multiple sets of elastic support members to synchronously extend and retract radially, the effective diameter of the entire winding working surface can be flexibly and uniformly changed, and the curling tightness and winding tension of the substrate can be adjusted as needed to adapt to rolls of different thicknesses and materials. Attached Figure Description

[0016] Figure 1 This is a perspective view of an adjustable continuous roll printing curling device according to one embodiment of the present invention;

[0017] Figure 2 A partially enlarged schematic diagram of an adjustable continuous roll printing curling device in one embodiment of this utility model;

[0018] Figure 3 One partial cross-sectional view of an adjustable continuous roll printing curling device according to one embodiment of the present invention;

[0019] Figure 4 A side view of an adjustable continuous roll printing curling device in one embodiment of the present invention;

[0020] Figure 5 A second partial cross-sectional view of an adjustable continuous roll printing curling device according to one embodiment of this utility model. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments:

[0022] like Figures 1 to 5 The present invention preferably provides an adjustable continuous roll-to-roll printing curling device, including a frame 1 and a curling mechanism disposed on the frame 1 for driving the substrate to curl. The curling mechanism includes a central cylinder 2 and a friction-type rotary drive mechanism 3, which are used in conjunction with a continuous roll-to-roll printing device to achieve continuous winding of the substrate after printing.

[0023] The friction-type rotary drive mechanism 3 makes frictional contact with the outer peripheral wall of the middle cylinder 2, and is used to transmit rotational torque to the middle cylinder 2, drive the middle cylinder 2 to rotate at a constant speed around its own axis, and gradually roll the printed continuous substrate around the outside of the middle cylinder 2.

[0024] The central cylinder 2 has an internally hollow structure along the axial direction, and a connecting shaft 16 is inserted and fitted inside it. The two ends of the connecting shaft 16 are movably connected to the frame 1 via bearings. Bearings are provided between the connecting shaft 16 and the central cylinder 2 to allow them to rotate relative to each other. The sidewalls at both ends of the connecting shaft 16 are recessed along the circumference to form grooves 18. Fixing components 19 are provided on the frame 1 at positions corresponding to the two ends of the connecting shaft 16. The fixing components 19 are engaged in the grooves 18 to achieve axial limitation of the connecting shaft 16 and prevent it from moving during operation.

[0025] Specifically, the fixing assembly 19 includes a rotating member 191 rotatably mounted on the frame 1, and a limiting member 192 for locking the rotation of the rotating member 191. The rotating member 191 has a toothed groove 193 and a circular hole 194 coaxially arranged on the side facing the connecting shaft 16, with the circular hole 194 located at the center of the toothed groove 193. The limiting member 192 includes a fixed shaft 1921, a gear 1922 fixedly mounted on the fixed shaft 1921, and a spring 1923. The fixed shaft 1921 is movably inserted into the frame 1 and is movably inserted into the circular hole 194 and can rotate relative to the circular hole 194. A limiting block 1924 is provided at the end of the fixed shaft 1921 away from the rotating member 191. The spring 1923 is sleeved on the fixed shaft 1921, and its two ends abut against the limiting block 1924 and the frame 1 respectively. Under the elastic force of the spring 1923, the fixed shaft 1921 tends to move in the direction of the rotating part 191, so that the gear 1922 remains engaged with the tooth groove 193, thereby locking the circumferential rotation of the rotating part 191.

[0026] In the installed state, the edge of the rotating component 191 is engaged in the slot 18 of the connecting shaft 16, and with the meshing and locking of the gear 1922 and the tooth groove 193, the rotating component 191 cannot rotate, thus forming a stable axial limit on the connecting shaft 16. When it is necessary to replace the winding body, pull the fixed shaft 1921 outward, compress the spring 1923 to disengage the gear 1922 from the tooth groove 193, and release the rotation lock on the rotating component 191; rotate the rotating component 191 so that its edge moves out of the slot 18, and the axial limit on the connecting shaft 16 can be released, and the connecting shaft 16 can be completely pulled out from the frame 1 for replacement. The operation requires no tools and is convenient and efficient.

[0027] In this embodiment, the friction-type rotary drive mechanism 3 includes two sets of conveyor belt assemblies 11 respectively disposed at both ends of the central cylinder 2, and a drive device 12 for driving the conveyor belt assemblies 11. Each set of conveyor belt assemblies 11 includes a driving wheel 13, a driven wheel 14, and a conveyor belt 15 wound around the driving wheel 13 and the driven wheel 14. The conveyor belt 15 is tensioned and closely adheres to the outer peripheral wall of the central cylinder 2, and drives the central cylinder 2 to rotate by the static friction of the contact surface. The drive device 12 is connected to the driving wheel 13 through a transmission, outputting power to drive the driving wheel 13 to rotate, and then drives the driven wheel 14 to rotate synchronously through the conveyor belt 15.

[0028] Furthermore, the drive wheels 13 of the two sets of conveyor belt assemblies 11 are connected by synchronous shaft transmission, which forces the drive wheels 13 at both ends to maintain the same speed and direction, thereby ensuring that the linear speed of the conveyor belts 15 on both sides is strictly consistent. This eliminates the speed difference between the two sides from the transmission source, avoids the roll material winding deviation and uneven end face caused by the asynchronous speed at both ends of the middle cylinder 2, and ensures the neatness and quality of continuous printing and winding of long-size continuous roll material.

[0029] Furthermore, the drive device 12 is a geared motor, and the output shaft of the geared motor is coaxially and fixedly connected to the drive wheel 13. Using a geared motor as the drive source converts the high-speed rotational power into a low-speed, high-torque output, directly driving the drive wheel 13 to rotate coaxially. This results in a short transmission chain, high transmission efficiency, and a stable supply of the driving torque required for continuous winding. Simultaneously, by adjusting the output speed of the geared motor, it can be matched to continuous roll-to-roll equipment with different printing speeds, ensuring that the winding line speed and printing speed are synchronized and avoiding substrate accumulation or stretching deformation.

[0030] As a further improvement, the central cylinder 2 is also provided with an adjusting component 4 and several elastic support members 5. The several elastic support members 5 are evenly distributed around the outer side of the central cylinder 2 and can be displaced radially along the central cylinder 2 respectively; the adjusting component 4 is connected to the several elastic support members 5 and is used to drive the several elastic support members 5 to make synchronous radial displacement relative to the central cylinder 2, thereby uniformly changing the effective diameter of the winding working surface and adjusting the curling tightness of the substrate.

[0031] Specifically, several guide shaft assemblies are evenly distributed along the circumference of the outer side of the central cylinder 2. Each guide shaft assembly includes two guide shafts 98 arranged along the axis. The elastic support 5 is movably sleeved on the two guide shafts 98 located in the same guide shaft assembly via linear bearings, so that the elastic support 5 can be relatively displaced radially along the central cylinder 2. A limiting nut 99 is threadedly fitted on the guide shaft 98, and the limiting nut 99 restricts the movement stroke of the elastic support 5.

[0032] The adjusting component 4 includes an adjusting ring 6 rotatably fitted onto the outer side of the central cylinder 2 via a bearing, and a locking assembly 7 for locking the adjusting ring 6. A connecting rod 8 is hinged to each of the adjusting ring 6 and the elastic support member 5. When adjusting the winding radius, rotating the adjusting ring 6 loosely fitted onto the outer side of the central cylinder 2 converts the circumferential rotation of the adjusting ring 6 into the radial translation of each elastic support member 5 via the corresponding hinged connecting rods 8. Operating only a single adjusting ring 6 achieves synchronous and equal extension and retraction of all supports, ensuring the winding working surface remains perfectly circular and avoiding winding skewing and uneven tension caused by asynchronous multi-point independent adjustments. After adjustment, the locking assembly 7 fixes the circumferential position of the adjusting ring 6, preventing the winding tension from causing the adjusting ring 6 to deflect in the opposite direction and maintaining a stable winding radius.

[0033] Furthermore, the locking assembly 7 includes a spring pin 9 disposed on the outer periphery of the central cylinder 2 and capable of elastic extension and retraction along the axial direction of the central cylinder 2. The adjusting ring 6 has a plurality of pin holes 10 evenly distributed around its circumference, which can engage with the spring pin 9. Before adjusting the radius, the spring pin 9 is pulled out along the axial direction to exit the current pin hole 10, thus releasing the circumferential limit on the adjusting ring 6. After rotating the adjusting ring 6 to the position corresponding to the target curl radius, the spring pin 9 is released, and it automatically engages with the corresponding pin hole 10 under the action of the spring force, completing the position locking. The multiple sets of pin holes 10 evenly distributed around the circumference correspond to multiple curl radii, enabling precise stepped adjustment. The spring pin 9 maintains the engagement state continuously due to its elasticity, resisting the vibration generated by the continuous operation of the equipment, avoiding the problem of easy loosening and displacement of traditional set screw locking, and ensuring the stability of the curl degree during long-term continuous printing.

[0034] The spring pin 9 is a relatively mature existing technology, and its structural principle will not be described in detail here.

[0035] Furthermore, the elastic support 5 is a combination of a spring metal sheet or an elastic rubber block and a skeleton. The elastic support 5 adopts a combination structure of skeleton and elastomer. The skeleton body bears the radial support force during the winding process, ensuring the structural rigidity of the outer diameter of the winding and bearing the winding tension of the continuous roll material; the spring metal sheet or elastic rubber block provides an appropriate elastic buffer margin. Supports with different elastic coefficients can be matched according to the hardness and thickness characteristics of the substrate, which avoids scratching and deformation when winding hard substrates and also avoids collapse and loosening when winding soft substrates, thus adapting to the winding process requirements of different materials.

[0036] The foregoing has shown and described the basic principles and main features of this utility model, as well as its advantages. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. An adjustable continuous edge print crimping apparatus comprising a frame and a crimping mechanism disposed on the frame for driving crimping of a substrate, characterized in that: The curling mechanism includes a central cylinder and a friction-type rotary drive mechanism. The friction-type rotary drive mechanism makes frictional contact with the outer peripheral wall of the central cylinder to drive the central cylinder to rotate around its own axis. The central cylinder has an internally hollow structure along the axial direction, and a connecting shaft is inserted and fitted inside it. The two ends of the connecting shaft are movably inserted into the frame through bearings. A bearing is provided between the connecting shaft and the central cylinder to realize relative rotation between the two. The side walls at both ends of the connecting shaft are recessed along the circumference to form a groove. A fixing component is provided on the frame at the position corresponding to the two ends of the connecting shaft. The fixing component is engaged in the groove to realize axial limitation of the connecting shaft. The fixing component can be unlocked and disengaged from the groove.

2. An adjustable permanent press print crimping device according to claim 1, wherein: The fixing assembly includes a rotating component rotatably mounted on the frame, and a limiting component for locking the rotation of the rotating component; the rotating component has a toothed groove and a circular hole coaxially arranged on the side facing the connecting shaft, and the circular hole is located at the center of the toothed groove; the limiting component includes a fixed shaft, a gear fixedly mounted on the fixed shaft, and a spring; the fixed shaft is movably inserted into the frame, and the fixed shaft is movably inserted into the circular hole and can rotate relative to the circular hole; a limiting block is provided at the end of the fixed shaft away from the rotating component; the spring is sleeved on the fixed shaft, and its two ends abut against the limiting block and the frame respectively, for providing elastic force to keep the gear engaged in the toothed groove connection state.

3. An adjustable permanent press print crimping device according to claim 1, wherein: The central cylinder is provided with an adjustment component and several elastic support components. The elastic support components are evenly distributed around the outer side of the central cylinder and can be displaced radially along the central cylinder. The adjustment component is connected to the elastic support components and is used to drive the elastic support components to make synchronous radial displacement relative to the central cylinder, so as to change the effective diameter of the winding working surface.

4. An adjustable permanent press print crimping device according to claim 3, wherein: The adjusting component includes an adjusting ring that is rotatably sleeved on the outer side of the central cylinder via a bearing, and a locking assembly for locking the adjusting ring to rotate. The adjusting ring and the elastic support are connected by connecting rods in a one-to-one correspondence.

5. An adjustable permanent press print crimping device according to claim 4, wherein: The locking assembly includes a spring pin disposed on the outer periphery of the central cylinder and capable of elastic extension and retraction along the axial direction of the central cylinder. The adjusting ring has a plurality of pin holes evenly distributed along its circumference that can be inserted and engaged with the spring pin.

6. An adjustable permanent press print crimping device according to claim 3, wherein: The elastic support is a combination structure of spring metal sheet or elastic rubber block and frame.

7. The adjustable continuous roll printing curling device according to claim 1, characterized in that: The friction-type rotary drive mechanism includes two sets of conveyor belt assemblies respectively disposed at both ends of the central cylinder, and a drive device for driving the conveyor belt assemblies to run; each set of conveyor belt assemblies includes a driving wheel, a driven wheel, and a conveyor belt wound around the driving wheel and the driven wheel, the conveyor belt being in contact with the outer peripheral wall of the central cylinder, and the drive device being connected to the driving wheel in a transmission.

8. The adjustable continuous roll printing curling device according to claim 7, characterized in that: The two sets of conveyor belt assemblies are connected by a synchronous shaft drive to achieve synchronous operation of the two conveyor belts.

9. An adjustable continuous roll printing curling device according to claim 7, characterized in that: The driving device is a geared motor, and the output shaft of the geared motor is fixedly connected to the drive wheel on the same axis.

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