A high-speed intermittent feeding mechanism for gravure rolls

Abstract

A high-speed intermittent feeding mechanism for gravure rolls uses a synchronous traction component to achieve synchronous rotation of six axes, and a swing shaft component to adjust the tension of the hot stamping foil. A buffer assembly is used to achieve continuous, non-stop unwinding of the hot stamping foil. The roll passes around the six axes, and the head and terminal ends of a first synchronous belt are respectively wound around a first adjustment shaft and a second adjustment shaft. When a second drive motor drives the second synchronous belt to rotate, it can drive a floating chuck to displace, thereby causing the first and second adjustment shafts to move in position, thereby achieving a dynamic compensation effect. The present invention can effectively ensure consistent roll transmission line speed, control tension fluctuations, avoid material stretching and deformation, and significantly improve the alignment accuracy of the hot stamping foil and the printing material. At the same time, with the help of a dynamic compensation mechanism, the hot stamping foil can be unwound continuously without stopping, shortening downtime when changing the printing material and improving production efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of cold stamping laminating machines, and in particular to a high-speed intermittent feeding mechanism for a gravure printing roll. Background Art

[0002] Cold foil lamination technology involves transferring cold foil paper to the printing substrate using UV adhesive. During the lamination process, a pressure roller is used to bond the cold foil to the substrate. To achieve efficient and continuous production, high-speed cold foil machines are often equipped with a buffer mechanism that dynamically stores the foil during substrate roll changes. This ensures the synchronization of the film supply system and the printing process, achieving a real-time balance between "what's in stock" and "what's out."

[0003] However, in high-speed operation scenarios, existing cache structures face significant challenges: First, the high-frequency coordinated movement of the rewinding and unwinding system and the cache device is prone to slight vibrations or positional deviations during transmission due to accumulated wear of the cylinder or motor mechanical parts or fluctuations in the stability of the pneumatic power source. This dynamic deviation under high-speed conditions will directly affect the alignment accuracy of the hot stamping foil and the printing material, thereby causing quality problems such as blurred hot stamping patterns and overprint deviations; second, the cache structure relies on the belt-driven roller to swing back and forth at high speed. The continuous pressure of the clamping device on the belt and the inertial pull at the moment of starting and stopping can easily cause belt fatigue deformation, tooth surface wear and other problems in long-term high-frequency operation, and even lead to fracture failures, which increases the frequency of equipment maintenance and seriously affects production continuity.

[0004] In the existing technology, there are deficiencies in the design of vibration suppression under high-speed motion and the durability of key transmission components, which makes it difficult to meet the production requirements of high-speed cold stamping machines for high precision and high reliability. It is urgent to improve the stability and durability of the cache structure under high-speed conditions through optimization. Summary of the Invention

[0005] The purpose of the present invention is to provide a high-speed intermittent feeding mechanism for gravure rolls, which is suitable for high-precision intermittent feeding scenarios of hot stamping foils and printing materials.

[0006] To achieve the above-mentioned object, the present invention provides a high-speed intermittent feeding mechanism for gravure rolls, comprising a frame, and an unwinding assembly, a winding assembly, a traction assembly, and a buffer assembly respectively arranged on the frame, wherein the traction assembly comprises a synchronous traction component and a swing shaft component.

[0007] The synchronous traction component includes a first drive motor, a first synchronous belt, a first driving shaft, a second driving shaft, a third driving shaft, a fourth driving shaft, a first adjustment shaft, and a second adjustment shaft. The first drive motor is connected to the second driving shaft, and the first synchronous belt drives the first driving shaft, the second driving shaft, the third driving shaft, the fourth driving shaft, the first adjustment shaft, and the second adjustment shaft to rotate synchronously.

[0008] The swing shaft component includes a swing shaft cylinder, a flexible connector and a tensioning shaft component. The swing cylinder is fixedly connected to the frame. One end of the flexible connector is fixedly connected to the output end of the swing cylinder, and the other end is connected to the tensioning shaft component. The swing cylinder drives the tensioning shaft component to rotate and abut against the coiled material.

[0009] The cache assembly includes a second drive motor, a linear guide rail, a floating chuck and a second synchronous belt. The second drive motor is connected to the second synchronous belt and drives the second synchronous belt to rotate. The floating chuck is connected to the first adjustment shaft and the second adjustment shaft respectively, and the floating chuck is fixedly connected to the second synchronous belt. The linear guide rail is fixedly connected to the frame and the floating chuck is fixed on the linear guide rail. The connection surface between the floating chuck and the second synchronous belt is an elastic swingable structure.

[0010] The coil passes around the first driving shaft, the second driving shaft, the third driving shaft, the fourth driving shaft, the first adjusting shaft and the second adjusting shaft, and the head end and the terminal end of the first synchronous belt are respectively wound around the first adjusting shaft and the second adjusting shaft. The second drive motor drives the second synchronous belt to rotate, thereby driving the floating chuck to move, and then the first adjusting shaft and the second adjusting shaft are moved in position.

[0011] Preferably, the tensioning shaft component includes a connecting plate, a connecting shaft, a synchronization plate, a tensioning shaft and a detection component. One end of the connecting plate is rotatably connected to the flexible connection mechanism. The connecting shaft passes through the frame and is fixedly connected to the other end of the connecting plate. One end of the synchronization plate is fixedly connected to the connecting shaft, and the other end is fixedly connected to the tensioning shaft. The tensioning shaft abuts against the coil. The detection component is connected to the connecting shaft, and the detection component is used to detect the rotation angle of the connecting shaft.

[0012] Preferably, the detection component includes a first detection gear, a second detection gear, a potentiometer and a fixed shell, the first detection gear is fixedly connected to the connecting shaft, the fixed shell is fixedly connected to the frame, the potentiometer is in the fixed shell and connected to the second detection gear, and the first detection gear is meshed with the second detection gear.

[0013] Preferably, the flexible connector includes a double-ear connector, a flexible spring, a connecting block and a cover. One end of the double-ear connector is provided with a rotational connection with the tensioning shaft component, and the other end is provided with a slide groove. The connecting block is in the slide groove and slides sealed with the slide groove. One end of the flexible spring is abutted against the bottom of the slide groove, and the other end is abutted against the connecting block. The output end of the swing shaft cylinder passes through the cover plate and is fixedly connected to the connecting block, and the cover plate is fixedly connected to the double-ear connector.

[0014] Preferably, the synchronous traction component also includes a first guide wheel and a tension wheel component, the first guide wheel and the tension wheel component are respectively fixedly connected to the frame, the first guide wheel is symmetrically arranged above the first synchronous belt, and the tension wheel component is below the first synchronous belt.

[0015] Preferably, the floating chuck includes a base plate, a bracket, a movable plate and a fixed seat. One side of the base plate is fixedly connected to the linear guide rail, and the bracket is fixed to the other side of the base plate. A channel for the second synchronous belt to pass through is provided between the bracket and the base plate. The movable plate is arranged in the channel and elastically connected to the bracket. The movable plate can elastically swing relative to the bracket.

[0016] The movable plate and the bottom plate clamp the second synchronous belt. The fixed seat is arranged on the bracket and is connected with the first adjusting shaft and the second adjusting shaft respectively.

[0017] Preferably, the floating chuck also includes a ball hinge connector and a butterfly spring. The middle part of the movable plate is fixedly connected to the bracket through the ball hinge connector. Along the movement direction of the second synchronous belt, the butterfly spring is symmetrically fixed on the movable plate and elastically connected to the bracket.

[0018] Preferably, the cache assembly also includes a third driven shaft, a synchronous wheel and a second guide wheel component, the third driven shaft is connected to the second drive motor through the synchronous wheel, the synchronous wheel is fixedly connected to the third driven shaft, the second guide wheel component passes through the third driven shaft and is rotatably connected to the fourth driving shaft, and the second guide wheel component is in contact with the first synchronous belt.

[0019] Preferably, the synchronous wheel includes a wheel body, a first interlocking ring and a second interlocking ring. The wheel body is provided with a placement cavity. The first interlocking ring and the second interlocking ring are placed in the placement cavity and abut against the placement cavity. The first interlocking ring and the second interlocking ring abut against each other and their abutting surfaces are inclined surfaces.

[0020] Preferably, the second guide wheel component includes a second guide wheel, a fixing ring and a bearing component. The bearing component is passed through the third driven shaft, the fixing ring is arranged on both sides of the bearing component, and the second guide wheel is sleeved on the outside of the bearing component and abuts against the first synchronous belt.

[0021] Beneficial effects of the present invention:

[0022] 1. The present invention ensures consistent coil transmission line speed through six-axis synchronous transmission and tension closed-loop control, effectively controls tension fluctuations, avoids material stretching and deformation, and significantly improves the alignment accuracy between the hot stamping foil and the printing material. At the same time, by dynamically compensating for the length change of the coil during intermittent feeding, high-precision intermittent feeding is achieved.

[0023] 2. The present invention absorbs the start-stop impact through an elastic buffer structure, reduces damage to the coil surface and vibration wear of components, and extends the service life of key components such as bearings and synchronous belts; at the same time, through elastic clamping and low-friction transmission design, it evenly disperses the belt contact stress, reduces energy loss and fatigue of the transmission system, and improves the operating stability of the equipment under high-speed conditions.

[0024] 3. The present invention uses a dynamic compensation mechanism to achieve continuous operation of hot stamping foil unwinding without stopping the machine, shortening the downtime when changing substrates and improving production efficiency; it is equipped with an adjustable interlocking ring structure, which optimizes the equipment space layout, reduces maintenance costs, and enhances the versatility and practicality of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0027] Figure 2 It is a structural diagram of the synchronous traction component and the cache component of the present invention.

[0028] Figure 3 It is a partial cross-sectional schematic diagram of the present invention.

[0029] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0030] Figure 5 It is a structural exploded diagram of the flexible connector of the present invention.

[0031] Figure 6 It is a partial schematic diagram of the cache component of the present invention.

[0032] Figure 7 It is a structural schematic diagram of the floating chuck of the present invention.

[0033] Figure 8 It is a cross-sectional schematic diagram of the floating chuck of the present invention.

[0034] Figure 9 yes Figure 6 Enlarged view of point B in the middle.

[0035] In the figure: frame 1; unwinding assembly 2; rewinding assembly 3; traction assembly 4; synchronous traction component 410; first drive motor 411; first synchronous belt 4111; first driving shaft 412; second driving shaft 413; third driving shaft 414; fourth driving shaft 415; first adjusting shaft 416; second adjusting shaft 417; first guide wheel 418; tensioning wheel component 419; swing shaft component 420; swing shaft cylinder 421; flexible connector 422; double-ear connector 422a; flexible spring 422b; connecting block 422c; slide 422d; cover 422e; tensioning shaft component 423; connecting plate 423a; connecting shaft 423b; same Step plate 423c; tensioning shaft 423d; detection component 424; first detection gear 4241; second detection gear 4242; potentiometer 4243; cache assembly 5; second drive motor 510; linear guide rail 520; second synchronous belt 530; synchronous wheel 540; wheel body 541; first interlocking ring 542; second interlocking ring 543; placement cavity 541a; second guide wheel component 550; second guide wheel 551; fixed ring 552; bearing member 553; floating chuck 560; base plate 561; bracket 562; movable plate 563; fixed seat 564; ball joint connector 565; butterfly spring 566; third driven shaft 570. DETAILED DESCRIPTION

[0036] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0037] like Figure 1 As shown, this embodiment provides a high-speed intermittent roll feeding mechanism for a high-speed cold ironing machine, comprising a frame 1, and an unwinding assembly 2, a rewinding assembly 3, a traction assembly 4, and a buffer assembly 5 disposed on the frame 1. After being released from the unwinding assembly 2, the roll passes through the synchronous traction component 410 and the swing shaft component 420 of the traction assembly 4 for tension control. The roll length and tension are then adjusted by the buffer assembly 5, and the roll is finally rewound by the rewinding assembly 3, achieving high-speed intermittent feeding. The unwinding assembly 2 and the rewinding assembly 3 are symmetrically disposed at opposite ends of the frame 1, using motors of the same specification to drive active rollers (using slip shafts), forming an equidistant tension field. The traction assembly 4, located in the middle of the frame 1 and comprising the synchronous traction component 410 and the swing shaft component 420, is the core power unit for roll transmission. The buffer assembly 5 is disposed below the traction assembly 4 and dynamically compensates for changes in roll length during intermittent feeding through the elastic swing and linear displacement of the floating chuck 560. The structures of the unwinding assembly 2 and the rewinding assembly 3 in this application are prior art and will not be described in detail in this application.

[0038] like Figure 2As shown, the first drive motor 411 (servo motor) in the synchronous traction component 410 is connected to the second driving shaft 413 through a rigid coupling, and the first synchronous belt 4111 is wound in a closed loop around the first driving shaft 412, the second driving shaft 413, the third driving shaft 414, the fourth driving shaft 415, the first adjustment shaft 416, and the second adjustment shaft 417; wherein the first synchronous belt 4111 has its head end wound around the first adjustment shaft 416 and its terminal end wound around the second adjustment shaft 417, forming a six-axis synchronous transmission circuit. Specifically, after the hot stamping foil is unwound by the unwinding assembly 2, as shown in FIG. Figure 3 As shown, it sequentially passes through the second driving shaft 413, the second adjustment shaft 417, the fourth driving shaft 415, the third driving shaft 414, the first adjustment shaft 416, and the first driving shaft 412. The first drive motor 411 of the present application drives the second driving shaft 413 to rotate, and through the tooth engagement of the first synchronous belt 4111, the six axes are forced to rotate synchronously. The closed-loop transmission achieves consistent linear speeds among the axes, avoiding feeding deviations caused by speed differences, eliminating linear speed differences from a geometric perspective, ensuring accurate synchronization of the six axes, guaranteeing the stability of coil material transmission, and improving the alignment accuracy of the hot stamping foil and the printing material.

[0039] Furthermore, the synchronous traction component 410 of the present application also includes a first guide pulley 418 and a tensioning pulley assembly 419. The first guide pulley 418 is symmetrically arranged above the first synchronous belt 4111 (i.e., above the first driving shaft 412 and the second driving shaft 413). The arcuate toothed surface limits the lateral deviation of the belt. At the same time, because the first drive motor 411 is connected to the output of the first driving shaft 412, the symmetrically arranged guide pulleys close to the power source can effectively suppress slight vibrations of the belt during operation, preventing transmission to the next driving shaft, which would affect the operation of the belt. The tensioning pulley assembly 419 is located below the synchronous belt and adjusts the belt tension by adjusting the groove position. This structure is prior art and will not be described in detail here.

[0040] like Figure 1 、 Figure 4 As shown, the swing shaft cylinder 421 in the swing shaft component 420 is fixed to the frame 1, and its output end is connected to the tensioning shaft component 423 via a flexible connector 422. The tensioning shaft component 423 includes a connecting plate 4231, a connecting shaft 4232, a synchronization plate 4233, and a tensioning shaft 4234. The tensioning shaft 4234 contacts the web and applies tension. The swing shaft cylinder 421 drives the tensioning shaft component 423 to rotate via the flexible connector 422. The tensioning shaft 4234 contacts the web and applies tension. By providing a detection component 424 connected to the connecting shaft 4232, the rotation angle of the connecting shaft can be detected in real time, and the contact force of the tensioning shaft 4234 on the web can be precisely controlled. This ensures stable tension during web transport, helping to further improve the alignment accuracy of the hot stamping foil and the printing material, and avoiding quality issues such as blurred patterns and overprint deviation caused by unstable tension.

[0041] Detection member 424 includes a first detection gear 4241 secured to connecting shaft 4232 and a second detection gear 4242 connected to potentiometer 4243. These two gears mesh and transmit information to monitor the rotation angle of connecting shaft 4232 in real time. When web tension changes, connecting shaft 4232 rotates first detection gear 4241, amplifying the angle signal through the gear transmission. Potentiometer 4243 then converts the angle into an electrical signal, which is fed back to the control system for real-time adjustment of cylinder output force.

[0042] Further, if Figure 5 As shown, the flexible connector 422 comprises a two-ear connector 422a, a flexible spring 422b, and a connecting block 422c. The two-ear connector 422a is provided with a chute 422d. The connecting block 422c is fixed to the output end of the swing shaft cylinder 421, and the flexible spring 422b abuts the bottom of the chute and the connecting block 422c. When the cylinder is started or stopped, the connecting block 422c slides within the chute, absorbing impact energy through elastic deformation of the spring. This prevents instantaneous overload of the tensioning shaft 4234 on the coil, protects the surface quality of the foil, and reduces vibration wear on the connecting shaft 4232, extending component life.

[0043] like Figure 3 、 Figure 6As shown, the cache assembly 5 of the present application includes a second drive motor 510, a linear guide 520, a second synchronous belt 530, a synchronous wheel 540, a second guide wheel component 550, a floating chuck 560 and a third driven shaft 570. The second drive motor 510 is connected to the second synchronous belt 530 and drives the second synchronous belt 530 to rotate. The floating chuck 560 is connected to the first adjustment shaft 416 and the second adjustment shaft 417 respectively, and the floating chuck 560 is fixedly connected to the second synchronous belt 530. The linear guide 520 is fixedly connected to the frame 1 and the floating chuck 560 is fixed on the linear guide 520. The connection surface between the floating chuck 560 and the second synchronous belt 530 is an elastically swingable structure. This assembly drives the floating chuck 560 to move by the second drive motor 510, adjusts the position of the first adjustment shaft 416 and the second adjustment shaft 417, and compensates for the change in the length of the hot stamping foil unwinding when the substrate is changed. To ensure continuous unwinding of the hot stamping foil during replacement, the unwinding assembly 2 must continue unwinding. The first adjustment shaft 416 is positioned between the first and third drive shafts 412, 414, and the second adjustment shaft 417 is positioned between the second and fourth drive shafts 413, 415. When adjustment is required, the second drive motor 510 drives the first and second adjustment shafts 416, 417 toward the rewinding assembly 3, lengthening the length of the foil between the second and fourth drive shafts 413, 415. This creates buffer time for substrate replacement while the unwinding assembly 2 continues unwinding. Once the substrate is replaced, the second drive motor 510 quickly reverses and resets the adjustment shafts. The excess foil pre-stored in the buffer assembly is released, allowing the entire feeding system to quickly return to its initial tension. This dynamic compensation mechanism not only ensures continuous unwinding of the hot stamping foil, but also effectively avoids production efficiency losses and material waste caused by downtime for rewinding, thereby improving the overall operational efficiency of the equipment.

[0044] Further, such as Figure 7As shown, the floating chuck 560 includes a base plate 561, a bracket 562, a movable plate 563 and a fixed seat 564. One side of the base plate 561 is fixedly connected to the linear guide rail 520, and the bracket 562 is fixed to the other side of the base plate 561. A channel for the second synchronous belt 530 to pass through is provided between the bracket 562 and the base plate 561. The movable plate 563 is arranged in the channel and is elastically connected to the bracket 562. The movable plate 563 can swing elastically relative to the bracket 562. The movable plate 563 and the base plate 561 clamp the second synchronous belt 530. The fixed seat 564 is provided on the bracket 562 and is respectively connected to the first adjustment shaft 416 and the second adjustment shaft 417. When the second synchronous belt 530 produces lateral displacement or tension fluctuation due to high-speed start and stop, the movable plate 563 can quickly adjust the clamping angle in real time to evenly distribute the contact stress between the belt tooth surface and the chuck, avoiding local stress concentration caused by traditional rigid clamping, and helping to reduce belt wear caused by the interaction between the belt and the chuck. At the same time, it ensures the connection stability between the floating chuck 560 and the second synchronous belt 530, thereby improving the working reliability and stability of the cache component 5.

[0045] Furthermore, the side of the base plate 561 that intersects the second synchronous belt 530 is equipped with teeth, which clamp and press the second synchronous belt 530 together to further secure the connection between the two. Meanwhile, the bracket 562, on which the movable plate 563 rests, has a groove corresponding to the movable plate 563. This groove serves to limit the movable plate 563, preventing it from shifting during movement and causing further friction and wear on the belt.

[0046] Further, if Figure 8 As shown, the floating chuck 560 is elastically connected to the second synchronous belt 530 through a ball hinge connector 565 and a butterfly spring 566, and the position of the adjustment shaft is adjusted along with the displacement of the linear guide 520. Specifically, the middle part of the movable plate 563 is fixedly connected to the bracket 562 through the ball hinge connector 565. Along the movement direction of the second synchronous belt 539, the butterfly spring 566 is symmetrically fixed on the movable plate 563 and elastically connected to the bracket 562. This structure enables the movable plate 563 to have better elastic swinging performance on the basis of the elastic connection with the bracket 562. The swinging freedom provided by the ball hinge cooperates with the butterfly spring 566 to automatically adjust the clamping angle when the belt is laterally offset, evenly disperse the contact stress of the tooth surface, effectively reduce the fatigue and wear of the belt caused by uneven force, extend the service life of the belt, and improve the overall stability and durability of the equipment.

[0047] like Figure 9As shown, the third driven shaft 570 passes through the synchronous pulley 540 and is connected to the second drive motor 510. The synchronous pulley 540 is fixedly connected to the third driven shaft 570. The second guide wheel member 550 passes through the third driven shaft 570 and is rotatably connected to the fourth driving shaft 415. The second guide wheel member 550 abuts the first synchronous belt 4111. The cooperation between the third driven shaft 570 and the synchronous pulley 540 enables the power of the second drive motor 510 to be more efficiently transmitted to the second synchronous belt 530, driving the floating chuck 560. The abutment of the second guide wheel member 550 with the first synchronous belt 4111 not only helps guide the movement direction of the first synchronous belt 4111, but also further optimizes the transmission system of the entire feeding mechanism, enhances the coordination between the buffer assembly and the synchronous traction component, and improves the stability and accuracy of feeding. Furthermore, the second guide wheel member 550 further reduces vibration during the operation of the first synchronous belt 4111, ensuring smoother operation.

[0048] The synchronous wheel 540 includes a wheel body 541, a first interlocking ring 542 and a second interlocking ring 543. The wheel body 541 is provided with a placement cavity 541a. The first interlocking ring 542 and the second interlocking ring 543 are placed in the placement cavity 541a and abut against the placement cavity 541a. The first interlocking ring 542 and the second interlocking ring 543 abut against each other and the abutting surfaces of the two are inclined surfaces. This structural design is different from the conventional locating pin connection method. The position of the two interlocking rings can be easily adjusted through bolt connection to achieve a more precise fixation with the wheel body. In actual work, the relative position of the two interlocking rings can be flexibly adjusted according to different transmission requirements to better adapt to the matching accuracy requirements of the synchronous wheel and other transmission components, further improve the accuracy and reliability of the synchronous wheel transmission, and ensure the stable and efficient operation of the feeding mechanism.

[0049] The second guide wheel assembly 550 includes a second guide wheel 551, a retaining ring 552, and a bearing 553. The bearing 553 is threaded onto the third driven shaft 570, with the retaining rings 552 positioned on either side of the bearing 553. The second guide wheel 551 is sleeved onto the exterior of the bearing 553 and abuts the first synchronous belt 4111. The bearing 553, threaded onto the third driven shaft 570, enables the second guide wheel 551 to rotate flexibly, reducing friction with the third driven shaft 570 and lowering energy loss. The retaining rings 552, positioned on either side of the bearing 553, position and secure the bearing 553, ensuring the positional stability of the second guide wheel 551 during operation. The second guide wheel 551, sleeved onto the exterior of the bearing 553 and abutting the first synchronous belt 4111, precisely guides the motion trajectory of the first synchronous belt 4111, further improving the stability and reliability of the synchronous belt drive and ensuring stable and efficient operation of the feeding mechanism. At the same time, the unique structural design of the second guide wheel component 550 can optimize the structural space, reduce the footprint of the device, and improve the space utilization of the equipment while meeting the feeding requirements of the high-speed cold ironing machine.

[0050] The above disclosure is merely one or more preferred embodiments of the present application and is not intended to limit the scope of the present application. A person skilled in the art will understand that all or part of the processes of the above embodiments and equivalent changes made in accordance with the claims of the present application are still within the scope of the present application.

Claims

1. A high-speed intermittent feeding mechanism for gravure printing rolls, comprising a frame, and an unwinding assembly, a winding assembly, a traction assembly, and a buffer assembly respectively arranged on the frame, characterized in that: The traction assembly includes a synchronous traction component and a swing shaft component. The synchronous traction component includes a first drive motor, a first synchronous belt, a first driving shaft, a second driving shaft, a third driving shaft, a fourth driving shaft, a first adjustment shaft, and a second adjustment shaft. The first drive motor is connected to the first driving shaft, and the first synchronous belt drives the first driving shaft, the second driving shaft, the third driving shaft, the fourth driving shaft, the first adjustment shaft, and the second adjustment shaft to rotate synchronously. The swing shaft component includes a swing shaft cylinder, a flexible connector and a tensioning shaft component. The swing shaft cylinder is fixedly connected to the frame. One end of the flexible connector is fixedly connected to the output end of the swing shaft cylinder, and the other end is connected to the tensioning shaft component. The swing shaft cylinder drives the tensioning shaft component to rotate and abut against the coiled material. The cache assembly includes a second drive motor, a linear guide rail, a floating chuck and a second synchronous belt. The second drive motor is connected to the second synchronous belt and drives the second synchronous belt to rotate. The floating chuck is connected to the first adjustment shaft and the second adjustment shaft respectively, and the floating chuck is fixedly connected to the second synchronous belt. The linear guide rail is fixedly connected to the frame and the floating chuck is fixed on the linear guide rail. The connection surface between the floating chuck and the second synchronous belt is an elastic swing shaft structure. The coil passes around the first driving shaft, the second driving shaft, the third driving shaft, the fourth driving shaft, the first adjusting shaft, and the second adjusting shaft, and the head end and the terminal end of the first synchronous belt are respectively wound around the first adjusting shaft and the second adjusting shaft. The second driving motor drives the second synchronous belt to rotate, thereby driving the floating chuck to move, thereby causing the first adjusting shaft and the second adjusting shaft to move in position. The tensioning shaft component includes a connecting plate, a connecting shaft, a synchronization plate, a tensioning shaft and a detection component. One end of the connecting plate is rotatably connected to the flexible connection mechanism. The connecting shaft passes through the frame and is fixedly connected to the other end of the connecting plate. One end of the synchronization plate is fixedly connected to the connecting shaft, and the other end is fixedly connected to the tensioning shaft. The tensioning shaft is in contact with the coil. The detection component is connected to the connecting shaft, and the detection component is used to detect the rotation angle of the connecting shaft.

2. A high-speed intermittent feeding mechanism for gravure printing rolls as claimed in claim 1, characterized in that: The detection component includes a first detection gear, a second detection gear, a potentiometer and a fixed shell. The first detection gear is fixedly connected to the connecting shaft, the fixed shell is fixedly connected to the frame, the potentiometer is in the fixed shell and connected to the second detection gear, and the first detection gear is meshed with the second detection gear.

3. A high-speed intermittent feeding mechanism for gravure printing rolls as claimed in claim 1, characterized in that: The flexible connector includes a double-ear connector, a flexible spring, a connecting block and a cover. One end of the double-ear connector is provided with a rotational connection with the tensioning shaft component, and the other end is provided with a slide groove. The connecting block is in the slide groove and slides sealed with the slide groove. One end of the flexible spring is connected to the bottom of the slide groove, and the other end is connected to the connecting block. The output end of the swing shaft cylinder passes through the cover plate and is fixedly connected to the connecting block. The cover plate is fixedly connected to the double-ear connector.

4. A high-speed intermittent feeding mechanism for gravure printing rolls as claimed in claim 1, characterized in that: The synchronous traction component also includes a first guide wheel and a tension wheel component. The first guide wheel and the tension wheel component are respectively fixedly connected to the frame. The first guide wheel is symmetrically arranged above the first synchronous belt, and the tension wheel component is below the first synchronous belt.

5. The high-speed intermittent feeding mechanism for gravure printing rolls according to claim 1, characterized in that: The floating chuck includes a base plate, a bracket, a movable plate and a fixed seat. One side of the base plate is fixedly connected to the linear guide rail, and the bracket is fixed to the other side of the base plate. A channel for the second synchronous belt to pass through is provided between the bracket and the base plate. The movable plate is arranged in the channel and elastically connected to the bracket. The movable plate can swing elastically relative to the bracket. The movable plate and the bottom plate clamp the second synchronous belt. The fixed seat is arranged on the bracket and is connected with the first adjusting shaft and the second adjusting shaft respectively.

6. A high-speed intermittent feeding mechanism for gravure printing rolls as claimed in claim 5, characterized in that: The floating chuck also includes a ball hinge connector and a butterfly spring. The middle part of the movable plate is fixedly connected to the bracket through the ball hinge connector. Along the movement direction of the second synchronous belt, the butterfly spring is symmetrically fixed on the movable plate and elastically connected to the bracket.

7. A high-speed intermittent feeding mechanism for gravure printing rolls as claimed in claim 1, characterized in that: The cache assembly also includes a third driven shaft, a synchronous wheel and a second guide wheel component. The third driven shaft is connected to the second drive motor through the synchronous wheel. The synchronous wheel is fixedly connected to the third driven shaft. The second guide wheel component passes through the third driven shaft and is rotatably connected to the fourth driving shaft. The second guide wheel component is in contact with the first synchronous belt.

8. A high-speed intermittent feeding mechanism for gravure printing rolls as claimed in claim 7, characterized in that: The synchronous wheel includes a wheel body, a first interlocking ring and a second interlocking ring. The wheel body is provided with a placement cavity. The first interlocking ring and the second interlocking ring are placed in the placement cavity and abut against the placement cavity. The first interlocking ring and the second interlocking ring abut against each other and their abutting surfaces are inclined surfaces.

9. A high-speed intermittent feeding mechanism for gravure printing rolls as claimed in claim 7, characterized in that: The second guide wheel component includes a second guide wheel, a fixing ring and a bearing component. The bearing component is passed through the third driven shaft, the fixing ring is arranged on both sides of the bearing component, and the second guide wheel is sleeved on the outside of the bearing component and abuts against the first synchronous belt.

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