High-speed intermittent feeding mechanism for gravure reel

Abstract

According to the high-speed intermittent feeding mechanism for the gravure reel, six shafts rotate at the same speed through a synchronous traction component, tension adjustment of a hot stamping foil film is achieved through a swing shaft component, continuous operation of unrolling of the hot stamping foil film without shutdown is achieved through a temporary storage component, and a roll material passes through the six shafts in a surrounding mode; the head end and the tail end of the first synchronous belt are wound on the first adjusting shaft and the second adjusting shaft respectively, and when the second driving motor drives the second synchronous belt to rotate, the floating chuck can be driven to generate displacement, so that position movement of the first adjusting shaft and the second adjusting shaft is achieved, and then the dynamic compensation effect is achieved. The hot stamping foil film unwinding device can effectively ensure that the speed of a roll material transmission line is consistent, control tension fluctuation, avoid material tensile deformation and remarkably improve the alignment precision of a hot stamping foil film and a printing material, meanwhile, continuous operation of unrolling the hot stamping foil film without shutdown is achieved by means of a dynamic compensation mechanism, the shutdown time when the printing material is replaced is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of cold stamping and laminating machines, and particularly to an intaglio printing reel high-speed intermittent feeding mechanism. Background Art

[0002] In the related technology of cold stamping and laminating, cold stamping refers to the method of transferring cold stamping foil to the printing substrate using UV adhesive. During the laminating process, a pressure roller is required to laminate the cold stamping foil and the printing substrate together. To achieve efficient and continuous production, high-speed cold stamping machines are usually equipped with a buffer structure. Through this structure, the stamping foil film is dynamically stored temporarily during the roll change of the printing substrate, ensuring the synchronous connection between the film supply system and the printing process, and achieving real-time balance of "storing as much as releasing".

[0003] However, in the high-speed operation scenario, the existing buffer structure faces significant challenges: First, during the high-frequency coordinated movement of the winding and unwinding system and the buffer device, due to the cumulative wear of the mechanical components of the cylinder or motor or the stability fluctuation of the pneumatic power source, fine vibrations or position offsets are likely to occur during the transmission process. Such dynamic deviations in the high-speed state will directly affect the alignment accuracy between the stamping foil film and the printing substrate, and further cause quality problems such as blurred stamping patterns and overprinting deviations. Second, the buffer structure relies on the belt-driven roller shaft to perform high-speed reciprocating swinging. The continuous pressing action of the clamping device on the belt and the inertial tension at the start and stop moments are likely to cause problems such as belt fatigue deformation and tooth surface wear during long-term high-frequency operation, and even lead to fracture failures, increasing the equipment maintenance frequency and seriously affecting production continuity.

[0004] In the prior art, there are deficiencies in vibration suppression during high-speed movement and durability design of key transmission components, which are difficult to meet the production requirements of high-precision and high-reliability for high-speed cold stamping machines. It is urgent to optimize and improve the stability and durability of the buffer structure under high-speed working conditions. Summary of the Invention

[0005] The purpose of the present invention is to provide an intaglio printing reel high-speed intermittent feeding mechanism, which is applicable to the high-precision intermittent feeding scenario of the stamping foil film and the printing substrate.

[0006] To achieve the above purpose, the present invention provides an intaglio printing reel high-speed intermittent feeding mechanism, including a frame, and a unwinding assembly, a winding assembly, a traction assembly, and a buffer assembly respectively arranged on the frame. The traction assembly includes a synchronous traction component and a swing shaft component. The synchronous traction component includes a first driving motor, a first synchronous belt, a first driving shaft, a second driving shaft, a third driving shaft, a fourth driving shaft, a first adjusting shaft, and a second adjusting shaft. The first driving 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 adjusting shaft, and the second adjusting shaft to rotate synchronously. The pendulum shaft component includes a pendulum 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. The buffer 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 respectively connected to the first adjustment shaft and the second adjustment shaft, 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 elastically swingable structure. The coiled material passes around the first drive shaft, the second drive shaft, the third drive shaft, the fourth drive shaft, the first adjustment shaft, and the second adjustment shaft. The head and the end of the first synchronous belt are respectively wound around the first adjustment shaft and the second adjustment shaft. The second drive motor drives the second synchronous belt to rotate, thereby driving the floating chuck to generate displacement, and further enabling the first adjustment shaft and the second adjustment shaft to move in position.

[0007] Preferably, the tensioning shaft component includes a connecting plate, a connecting shaft, a synchronous 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 synchronous 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 coiled material. The detection component is connected to the connecting shaft and is used to detect the rotation angle of the connecting shaft.

[0008] Preferably, the detection component includes a first detection gear, a second detection gear, a potentiometer, and a fixed housing. The first detection gear is fixedly connected to the connecting shaft. The fixed housing is fixedly connected to the frame. The potentiometer is located inside the fixed housing and is connected to the second detection gear. The first detection gear is meshed with the second detection gear.

[0009] Preferably, the flexible connector includes a double-ear connector, a flexible spring, a connecting block, and a cover plate. One end of the double-ear connector is provided with a connection for rotatably connecting to the tensioning shaft component, and the other end is provided with a chute. The connecting block is located inside the chute and slides in a sealed manner with the chute. One end of the flexible spring abuts against the bottom of the chute, and the other end abuts against the connecting block. The output end of the pendulum 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.

[0010] Preferably, the synchronous traction component further includes a first guide wheel and a tensioning wheel component. The first guide wheel and the tensioning wheel component are respectively fixedly connected to the frame. The first guide wheels are symmetrically arranged above the first synchronous belt, and the tensioning wheel component is located below the first synchronous belt.

[0011] Preferably, the floating chuck includes a bottom plate, a bracket, a movable plate and a fixed seat. One side of the bottom plate is fixedly connected to the linear guide rail. The bracket is fixed to the other side of the bottom plate. A channel for the second synchronous belt to pass through is provided between the bracket and the bottom 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. The movable plate and the bottom plate clamp the second synchronous belt. The fixed seat is arranged on the bracket and is respectively connected to the first adjusting shaft and the second adjusting shaft.

[0012] Preferably, the floating chuck further includes a ball hinge connecting piece and a disc spring. The middle part of the movable plate is fixedly connected to the bracket through the ball hinge connecting piece. Along the movement direction of the second synchronous belt, the disc springs are symmetrically fixed on the movable plate and elastically connected to the bracket.

[0013] Preferably, the buffer assembly further includes a third driven shaft, a synchronous pulley and a second guide wheel component. The third driven shaft passes through the synchronous pulley and is connected to the second driving motor. The synchronous pulley 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 abuts against the first synchronous belt.

[0014] Preferably, the synchronous pulley includes a wheel body, a first fitting ring and a second fitting ring. The wheel body is provided with a placement cavity. The first fitting ring and the second fitting ring are placed in the placement cavity and abut against the placement cavity. The first fitting ring and the second fitting ring abut against each other and the abutting surface of the two is an inclined surface.

[0015] Preferably, the second guide wheel component includes a second guide wheel, a fixing ring and a bearing component. The bearing component is penetrated on the third driven shaft. The fixing ring is arranged on both sides of the bearing component. The second guide wheel is sleeved outside the bearing component and abuts against the first synchronous belt. The beneficial effects of the present invention are as follows: 1. Through six-axis synchronous transmission and tension closed-loop control, the present invention ensures that the speed of the coil material transmission line is consistent, effectively controls the tension fluctuation, avoids the stretching deformation of the material, significantly improves the alignment accuracy between the hot stamping foil film and the printing material, and at the same time realizes the intermittent feeding under high precision by dynamically compensating the length change of the coil material during intermittent feeding.

[0016] 2. The present invention absorbs the start-stop impact through the elastic buffer structure, reduces the surface damage of the coil material and the vibration wear of components, and prolongs the service life of key components such as bearings and synchronous belts; at the same time, through the elastic clamping and low-friction transmission design, the belt contact stress is evenly dispersed, the energy loss and fatigue of the transmission system are reduced, and the operation stability of the equipment under high-speed working conditions is improved.

[0017] 3. The present invention realizes the continuous operation of the hot stamping foil film unwinding without stopping through the dynamic compensation mechanism, shortens the downtime when replacing the printing material, improves the production efficiency; is provided with an adjustable fitting ring structure, optimizes the equipment space layout, reduces the maintenance cost, and enhances the versatility and practicability of the equipment. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art.

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the structure of the synchronous traction component and the buffer component of the present invention.

[0021] Figure 3 It is a schematic cross-sectional view of a part of the present invention.

[0022] Figure 4 It is Figure 3 An enlarged view of part A in

[0023] Figure 5 It is an exploded view of the structure of the flexible connector of the present invention.

[0024] Figure 6 It is a partial schematic view of the buffer component of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the floating chuck of the present invention.

[0026] Figure 8 It is a cross-sectional view of the floating chuck of the present invention.

[0027] Figure 9 It is Figure 6 An enlarged view of part B in

[0028] In the figure: frame 1; unwinding assembly 2; winding assembly 3; traction assembly 4; synchronous traction member 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 pulley 418; tension pulley member 419; swing shaft member 420; swing shaft cylinder 421; flexible connector 422; double-ear connector 422a; flexible spring 422b; connecting block 422c; chute 422d; cover 422e; tensioning shaft member 423; connecting plate 423a; connecting shaft 423b; synchronous plate 423c; tensioning shaft 423d; detection member 424; first detection gear 4241; second detection gear 4242; potentiometer 4243; buffer assembly 5; second drive motor 510; linear guide 520; second synchronous belt 530; synchronous pulley 540; pulley body 541; first fitting ring 542; second fitting ring 543; placement cavity 541a; second guide pulley member 550; second guide pulley 551; fixing ring 552; bearing member 553; floating chuck 560; bottom plate 561; bracket 562; movable plate 563; fixed seat 564; ball hinge connector 565; disc spring 566; third driven shaft 570. Detailed implementation manners

[0029] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0030] As Figure 1 As shown, this embodiment provides a reel high-speed intermittent feeding mechanism applied to a high-speed cold stamping machine, including a frame 1, and an unwinding assembly 2, a winding assembly 3, a traction assembly 4, and a buffer assembly 5 arranged on the frame 1. After the rolled material is released by the unwinding assembly 2, it sequentially passes through the synchronous traction member 410 and the swing shaft member 420 of the traction assembly 4 for tension control, and then the length and tension of the rolled material are adjusted through the buffer assembly 5, and finally wound by the winding assembly 3 to achieve high-speed intermittent feeding. The unwinding assembly 2 and the winding assembly 3 are symmetrically arranged at both ends of the frame 1, and the same specification motors are used to drive the driving rollers (the driving rollers adopt slip shafts) to form an equidistant tension field; the traction assembly 4 is located in the middle of the frame 1 and includes a synchronous traction member 410 and a swing shaft member 420, which is the core power unit for the transmission of the rolled material; the buffer assembly 5 is arranged below the traction assembly 4, and the length change of the rolled material in intermittent feeding is dynamically compensated through the elastic swing and linear displacement of the floating chuck 560. In this application, the structures of the unwinding assembly 2 and the winding assembly 3 are prior arts and will not be elaborated herein.

[0031] As Figure 2As shown in the figure, 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. The first synchronous belt 4111 is wound around the first driving shaft 412, the second driving shaft 413, the third driving shaft 414, the fourth driving shaft 415, the first adjusting shaft 416 and the second adjusting shaft 417 in a closed-loop manner. Among them, the head end of the first synchronous belt 4111 is wound around the first adjusting shaft 416, and the terminal end is wound around the second adjusting shaft 417, forming a six-axis synchronous transmission loop as a whole. Specifically, after the hot stamping foil film is fed by the unwinding assembly 2, as Figure 3 shown, it passes through the second driving shaft 413, the second adjusting shaft 417, the fourth driving shaft 415, the third driving shaft 414, the first adjusting shaft 416 and the first driving shaft 412 in sequence. The first drive motor 411 of the present application drives the second driving shaft 413 to rotate. Through the tooth-shaped engagement of the first synchronous belt 4111, the six axes are forced to rotate synchronously. The closed-loop transmission realizes the same linear velocity between the axes, avoids the feeding deviation caused by the rotational speed difference, eliminates the linear velocity difference from the geometric level, ensures the accuracy of the six-axis synchronization, guarantees the stability of the coil material transmission, and improves the alignment accuracy between the hot stamping foil film and the printing material.

[0032] Furthermore, the synchronous traction component 410 of the present application further includes a first guide wheel 418 and a tension pulley component 419. The first guide wheel 418 is symmetrically arranged above the first synchronous belt 4111 (that is, above the first driving shaft 412 and the second driving shaft 413), and restricts the lateral offset of the belt through an arc-shaped tooth surface. At the same time, since the first drive motor 411 is output-connected to the first driving shaft 412, the symmetrically arranged guide wheels close to the power source can effectively suppress the slight jitter of the belt during operation and avoid transmitting it to the next driving shaft, thereby affecting the belt operation. The tension pulley component 419 is located below the synchronous belt, and adjusts the belt tension through the groove-type position adjustment. This structure is a prior art and will not be elaborated here.

[0033] As Figure 1 、 Figure 4 shown, the swing shaft cylinder 421 in the swing shaft component 420 is fixed to the frame 1, and the output end is connected to the tensioning shaft component 423 through a flexible connector 422. The tensioning shaft component 423 includes a connecting plate 4231, a connecting shaft 4232, a synchronous plate 4233 and a tensioning shaft 4234. The tensioning shaft 4234 abuts against the coil material to apply tension. The swing shaft cylinder 421 drives the tensioning shaft component 423 to rotate through the flexible connector 422, and the tensioning shaft 4234 abuts against the coil material and applies tension. By setting the detection component 424 connected to the connecting shaft 4232, the rotation angle of the connecting shaft can be detected in real time, and then the abutting force of the tensioning shaft 4234 on the coil material can be accurately controlled, so that the tension of the coil material during transmission remains stable, which helps to further improve the alignment accuracy between the hot stamping foil film and the printing material, and avoid quality problems such as blurred patterns and overprint deviation caused by unstable tension.

[0034] The detection component 424 includes a first detection gear 4241 fixed to the connecting shaft 4232 and a second detection gear 4242 connected to the potentiometer 4243. The two are in meshing transmission to detect the rotation angle of the connecting shaft 4232 in real time. When the tension of the coiled material changes, the connecting shaft 4232 drives the first detection gear 4241 to rotate, amplifies the angle signal through gear transmission, and the potentiometer 4243 converts the angle into an electrical signal and feeds it back to the control system to adjust the output force of the cylinder in real time.

[0035] Furthermore, as Figure 5 shown, the flexible connector 422 includes a double-ear connector 422a, a flexible spring 422b, and a connection block 422c. The double-ear connector 422a is provided with a chute 422d. The connection block 422c is fixed to the output end of the swing shaft cylinder 421, and the flexible spring 422b abuts against the bottom of the chute and the connection block 422c. When the cylinder starts and stops, the connection block 422c slides in the chute, absorbs the impact energy through the elastic deformation of the spring, avoids the instantaneous overload of the coiled material by the tension shaft 4234, protects the surface quality of the foil film, reduces the vibration and wear of the connecting shaft 4232 at the same time, and prolongs the service life of the components.

[0036] As 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.

[0037] Further, such as Figure 7As shown, the floating chuck 560 includes a bottom plate 561, a bracket 562, a movable plate 563 and a fixed seat 564. One side of the bottom plate 561 is fixedly connected to the linear guide 520. The bracket 562 is fixed to the other side of the bottom plate 561. A channel for the second synchronous belt 530 to pass through is provided between the bracket 562 and the bottom plate 561. The movable plate 563 is arranged in the channel and elastically connected to the bracket 562. The movable plate 563 can elastically swing relative to the bracket 562. The movable plate 563 and the bottom plate 561 clamp the second synchronous belt 530. The fixed seat 564 is arranged 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 has a lateral offset or a tension fluctuation due to high-speed start-stop, the movable plate 563 can quickly adjust the clamping angle in real time, so that the contact stress between the tooth surface of the belt and the chuck is evenly distributed, avoiding local stress concentration caused by traditional rigid clamping, helping to reduce the belt wear caused by the interaction between the belt and the chuck, and at the same time ensuring the connection stability between the floating chuck 560 and the second synchronous belt 530, thereby improving the working reliability and stability of the buffer assembly 5.

[0038] Further, the surface of the bottom plate 561 that clamps the second synchronous belt 530 is provided with teeth, and the second synchronous belt 530 is clamped and pressed through the teeth, making their connection more stable. At the same time, on the side of the bracket 562 where the movable plate 563 is placed, a channel corresponding to the movable plate 563 is provided, and the channel can limit the movable plate 563 to prevent it from displacing during movement and causing new frictional wear to the belt.

[0039] Still further, as Figure 8 shown, the floating chuck 560 realizes elastic connection with the second synchronous belt 530 through a ball hinge connector 565 and a disc spring 566, and adjusts the position of the adjustment shaft 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 disc springs 566 are 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 disc spring 566 to automatically adjust the clamping angle when the belt has a lateral offset, evenly disperse the tooth surface contact stress, 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.

[0040] As Figure 9As shown, the third driven shaft 570 passes through the synchronous pulley 540 and is connected to the second driving 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 against the first synchronous belt 4111. Through the cooperation of the third driven shaft 570 and the synchronous pulley 540, the power of the second driving motor 510 can be more effectively transmitted to the second synchronous belt 530, driving the floating chuck 560 to move. The second guide wheel member 550 abuts against the first synchronous belt 4111, which not only helps to guide the movement direction of the first synchronous belt 4111, further optimizes the transmission system of the entire feeding mechanism, enhances the cooperative working ability between the buffer assembly and the synchronous traction component, and improves the stability and accuracy of feeding. Moreover, the second guide wheel member 550 further reduces the vibration during the operation of the first synchronous belt 4111, making the first synchronous belt 4111 run more smoothly during operation.

[0041] The synchronous pulley 540 includes a wheel body 541, a first fitting ring 542 and a second fitting ring 543. The wheel body 541 is provided with a placement cavity 541a. The first fitting ring 542 and the second fitting ring 543 are placed in the placement cavity 541a and abut against the placement cavity 541a. The first fitting ring 542 and the second fitting ring 543 abut against each other and their abutting surfaces are inclined planes. This structural design is different from the conventional positioning pin connection method. By using bolt connection, the positions of the two fitting rings can be conveniently adjusted to achieve more precise fixation with the wheel body. In actual work, according to different transmission requirements, the relative positions of the two fitting rings can be flexibly adjusted to better meet the fitting accuracy requirements of the synchronous pulley and other transmission components, further improving the accuracy and reliability of the synchronous pulley transmission, and ensuring the stable and efficient operation of the feeding mechanism.

[0042] The second idler wheel member 550 includes a second idler wheel 551, a fixing ring 552, and a bearing member 553. The bearing member 553 is sleeved on the third driven shaft 570. The fixing ring 552 is disposed on both sides of the bearing member 553. The second idler wheel 551 is sleeved outside the bearing member 553 and abuts against the first synchronous belt 4111. The bearing member 553 is sleeved on the third driven shaft 570, enabling the second idler wheel 551 to rotate flexibly, reducing the friction with the third driven shaft 570, and reducing energy loss. The fixing ring 552 is disposed on both sides of the bearing member 553, playing a role in positioning and fixing the bearing member 553, and ensuring the position stability of the second idler wheel 551 during operation. The second idler wheel 551 is sleeved outside the bearing member 553 and abuts against the first synchronous belt 4111, which can accurately guide the movement track of the first synchronous belt 4111, further improving the stability and reliability of the synchronous belt drive, and ensuring the stable and efficient operation of the feeding mechanism. At the same time, the unique structural design of the second idler wheel member 550 can optimize the structural space, reduce the floor area of the device, and improve the space utilization rate of the equipment while meeting the feeding requirements of the high-speed cold ironing machine. The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. An intaglio printing reel high-speed intermittent feeding mechanism, comprising a frame, and a unwind 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 adjusting shaft, and a second adjusting 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 adjusting shaft, and the second adjusting shaft to rotate synchronously. The swing shaft component includes a swing shaft cylinder, a flexible connector, and a tensioning shaft member. 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 member. The swing cylinder drives the tensioning shaft member to rotate and abut against the coiled material. The buffer 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 respectively connected to the first adjusting shaft and the second adjusting shaft, 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 elastically swingable structure. The coiled material 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. The head and the 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 generate displacement, and further enabling the first adjusting shaft and the second adjusting shaft to move in position.

2. The gravure reel high-speed intermittent feeding mechanism according to claim 1, wherein, The tensioning shaft member includes a connecting plate, a connecting shaft, a synchronous plate, a tensioning shaft, and a detection member. 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 synchronous 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 coiled material. The detection member is connected to the connecting shaft and is used to detect the rotation angle of the connecting shaft.

3. A gravure roll high-speed intermittent feeding mechanism according to claim 2, characterized in that The detection member includes a first detection gear, a second detection gear, a potentiometer, and a fixed housing. The first detection gear is fixedly connected to the connecting shaft. The fixed housing is fixedly connected to the frame. The potentiometer is located inside the fixed housing and is connected to the second detection gear. The first detection gear is meshed with the second detection gear.

4. The gravure reel high-speed intermittent feeding mechanism according to claim 1, characterized in that, The flexible connector includes a double-ear connecting member, a flexible spring, a connecting block, and a cover plate. One end of the double-ear connecting member is provided with a connection for rotatably connecting to the tensioning shaft member, and the other end is provided with a chute. The connecting block is located inside the chute and slides in a sealed manner within the chute. One end of the flexible spring abuts against the bottom of the chute, and the other end abuts 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. The cover plate is fixedly connected to the double-ear connecting member.

5. The gravure reel high-speed intermittent feeding mechanism according to claim 1, wherein, The synchronous traction component further includes a first guide wheel and a tensioning wheel member. The first guide wheel and the tensioning wheel member are respectively fixedly connected to the frame. The first guide wheels are symmetrically arranged above the first synchronous belt, and the tensioning wheel member is located below the first synchronous belt.

6. The gravure reel high-speed intermittent feeding mechanism according to claim 1, wherein The floating chuck includes a bottom plate, a bracket, a movable plate and a fixed seat. One side of the bottom plate is fixedly connected to a linear guide rail. The bracket is fixed to the other side of the bottom plate. A channel for passing a second synchronous belt is provided between the bracket and the bottom 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. The movable plate and the bottom plate clamp the second synchronous belt. The fixed seat is arranged on the bracket and is respectively connected to a first adjusting shaft and a second adjusting shaft.

7. The gravure reel high-speed intermittent feeding mechanism according to claim 6, wherein The floating chuck further includes a ball hinge connecting member and a disc spring. The middle part of the movable plate is fixedly connected to the bracket through the ball hinge connecting member. Along the movement direction of the second synchronous belt, the disc springs are symmetrically fixed on the movable plate and elastically connected to the bracket.

8. The gravure reel high-speed intermittent feeding mechanism according to claim 1, characterized in that The buffer assembly further includes a third driven shaft, a synchronous pulley and a second guide wheel member. The third driven shaft passes through the synchronous pulley and is connected to a second driving motor. The synchronous pulley is fixedly connected to the third driven shaft. The second guide wheel member passes through the third driven shaft and is rotatably connected to a fourth driving shaft. The second guide wheel member abuts against the first synchronous belt.

9. The gravure reel high-speed intermittent feeding mechanism according to claim 8, wherein, The synchronous pulley includes a wheel body, a first fitting ring and a second fitting ring. The wheel body is provided with a placement cavity. The first fitting ring and the second fitting ring are placed in the placement cavity and abut against the placement cavity. The first fitting ring and the second fitting ring abut against each other and their abutting surfaces are inclined planes.

10. A gravure reel high-speed intermittent feeding mechanism according to claim 8, characterized in that, The second guide wheel member includes a second guide wheel, a fixing ring and a bearing member. The bearing member is passed through the third driven shaft. The fixing ring is arranged on both sides of the bearing member. The second guide wheel is sleeved outside the bearing member and abuts against the first synchronous belt.

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