A relief printing device

Abstract

This invention relates to the field of relief printing technology and discloses a relief printing apparatus. The invention includes: a relief printing machine; a paper roll for storing paper rolls; a functional roll for guiding, flattening, and stress-relieving the paper; two adaptive adjusters symmetrically arranged within the relief printing machine, each including a sliding part and a bearing seat that slides on the sliding part; an energy storage rewinder for traction of the bearing seat; and a damping adjustment part disposed on the side of the energy storage rewinder. The damping adjustment part includes a magnetic damping fork with adjustable stroke, the magnetic damping fork being adjustable in position relative to an aluminum disc rotating within the energy storage rewinder. This invention addresses the unique intermittent feeding unwinding system of relief printing machines by using displaceable adaptive stress rollers to suppress the jumping that may occur during paper movement.

Description

Technical Field

[0001] This invention relates to the field of relief printing technology, and in particular to a relief printing apparatus. Background Technology

[0002] Breakthroughs in UV curing technology have provided core support for the innovation of embossed printing processes. UV curing technology uses ultraviolet light as an energy source to rapidly polymerize UV ​​inks containing photosensitizers on the substrate surface, achieving instantaneous curing from liquid to solid. Compared to traditional solvent-based inks, UV inks offer advantages such as solvent-free evaporation, fast curing speed, strong adhesion, wear resistance, and high color stability, making them an ideal ink type for achieving high-precision embossed effects. Based on this, the industry began exploring the combination of UV curing technology with traditional embossed printing processes, gradually forming early prototypes of UV embossed printing. Embossed printing equipment includes a paper unwinding system for feeding materials. Due to the characteristics of embossed printing, the paper movement is not uniform and continuous but intermittent. The high start-stop frequency places high demands on stress control during the paper unwinding process, leading to the improvement proposed in this case. Summary of the Invention

[0003] To overcome the problems mentioned above, an embossing printing apparatus is provided.

[0004] The technical problem solved by this invention is achieved through the following technical solution: an embossing printing device, comprising: an embossing printing machine; a paper roll for storing paper rolls; a functional roll for guiding, flattening, and stress-relieving paper; two adaptive adjusters symmetrically arranged within the embossing printing machine, including a sliding part and a bearing seat that slides on the sliding part, an energy storage winding device for traction of the bearing seat, and a damping adjustment part disposed on the side of the energy storage winding device. The damping adjustment part includes a magnetic damping fork with adjustable stroke, the magnetic damping fork being adjustable in position relative to an aluminum disc rotating within the energy storage winding device. The aluminum disc is coaxial with the energy storage winding device, and the magnetic damping force on the aluminum disc is transmitted to the energy storage winding device through coaxial transmission, causing it to rotate under damping force; and an adaptive stress roller rotatably disposed between the two adaptive adjusters, traction of the paper, the adaptive stress roller being able to move its axis height under the action of the adaptive adjusters to adjust the displacement caused by changes in paper tension.

[0005] In one embodiment, the sliding part is disposed on a mounting bracket, which is fixed inside the relief printing machine by bolt fasteners.

[0006] In one embodiment, the sliding part includes a slide rail and a slider slidably disposed on the slide rail, the slider being able to slide smoothly within the effective stroke of the slide rail, and the mounting direction of the slide rail being perpendicular to the paper flattening direction.

[0007] In one embodiment, the bearing housing is fixed to the slider by bolt fasteners.

[0008] In one embodiment, the winding reel includes a winding box, in which a winding reel wound with a steel wire rope is rotatably disposed. One end of the steel wire rope passes through a rope outlet provided at the bottom of the winding box and is fixed on a bearing seat or a slider. A torsion spring box is disposed on the outer shell of the winding box, and the shaft of the winding reel extends into the torsion spring box. A coil spring is disposed in the torsion spring box, and the coil spring provides a rotational tendency force to the winding reel.

[0009] In one embodiment, a damping box is fixedly mounted on the mounting bracket, the aluminum disc is rotatably disposed inside the damping box, the winding box is disposed on the outer shell of the damping box and is coaxial with the damping box, and the shaft of the winding wheel is coaxial with the shaft of the aluminum disc.

[0010] In one embodiment, the damping adjustment unit includes an adjustment bracket and a magnetic damping fork, wherein the magnetic damping fork is provided with a radial clearance through groove, the magnetic damping fork is slidably inserted into the adjustment bracket, the magnetic damping fork slides radially relative to the aluminum disk, and permanent magnets are symmetrically fixed on the inner wall of the radial clearance through groove, the permanent magnets being located at the front and rear end faces of the aluminum disk.

[0011] In one embodiment, the aluminum disc is provided with three structural holes at radial intervals: a first structural hole, a second structural hole, and a third structural hole. The length and width of the first structural hole, the second structural hole, and the third structural hole are the same, and the spacing increases sequentially.

[0012] In one embodiment, the aluminum disk is provided with uniformly variable structural holes at an annular interval, the width of which gradually decreases from the center outwards.

[0013] Preferably, the adjusting bracket is also rotatably provided with a screw adjusting knob, the helical section of which is threadedly connected to a screw hole at the tail end of the magnetic damping fork. Rotating the screw adjusting knob can adjust the position of the magnetic damping fork through the cooperating helical pair.

[0014] The advantages and positive effects of this invention are as follows: For the unique gap feeding unwinding system of embossing printing machines, a displaceable adaptive stress roller is used to suppress the jumping that may occur during paper movement. The adaptive stress roller maintains a constant and tight fit with the paper through its active movement, achieving active adaptation to paper stress. Specifically, traction is achieved through a coil spring inside a torsion spring box, and magnetic damping is used to adjust the speed of the take-up wheel during unwinding or take-up by utilizing the principle of cutting magnetic lines of force. Furthermore, this device can produce different magnetic damping effects by adjusting the cooperation between the permanent magnet and the preset uniform structure hole, providing options to allow for appropriate adjustment of the damping force according to the paper thickness, toughness, and production requirements. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall installation structure of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 3 yes Figure 2 Schematic diagram of a partial cross-section.

[0019] Figure 4 This is a schematic diagram of the three-dimensional partial cross-sectional structure of the present invention.

[0020] Figure 5 This is a schematic diagram of the main structure of the present invention.

[0021] Figure 6 This is a schematic diagram of an embodiment of the configuration structure of the aluminum disc 27 and the magnetic damping fork 16 in this invention.

[0022] Figure 7 This is a schematic diagram of another embodiment of the configuration structure of the aluminum disk 27 and the magnetic damping fork 16 in this invention.

[0023] The labels in the attached diagram are described as follows: 10. Relief printing machine; 11. Functional roller; 12. Mounting bracket; 13. Adaptive stress roller; 14. Paper roll roller; 15. Adjustment bracket; 16. Magnetic damping fork; 17. Screw adjustment knob; 18. Damping box; 19. Torsion spring box; 20. Rewinding box; 21. Rope outlet; 22. Steel wire rope; 23. Slide rail; 24. Slider; 25. Bearing seat; 26. Rewinding wheel; 27. Aluminum disc; 28. Damping adjustment part; 29. ​​Sliding part; 30. Permanent magnet; 31. Gear position one structural hole; 32. Gear position two structural hole; 33. Gear position three structural hole; 34. Uniform deformation structural hole; 35. Adaptive regulator; 36. Energy storage rewinder. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0025] The embodiments of the present invention will be further described in detail below with reference to the accompanying drawings: Figure 1-7 As shown, the embossing printing apparatus of the present invention includes: an embossing printing machine 10; a paper roll roller 14 for storing paper rolls; a functional roller 11 for guiding, flattening, and stress-relieving the paper; two adaptive adjusters 35 symmetrically arranged within the embossing printing machine 10, each including a sliding part 29 and a bearing seat 25 that slides on the sliding part 29; an energy storage rewinder 36 for traction of the bearing seat 25; and a damping adjustment part 28 disposed on the side of the energy storage rewinder 36, the damping adjustment part 28 including a magnetic damping fork 16 with adjustable stroke. The magnetic damping fork 16 can be adjusted relative to the rotating aluminum disk 27 inside the energy storage winding unit 36 ​​to achieve different magnetic damping. The aluminum disk is coaxial with the energy storage winding unit 36. The magnetic damping force on the aluminum disk is transmitted to the energy storage winding unit 36 ​​through the coaxial connection, so that it is damped when rotating, thereby suppressing and absorbing kinetic energy. The adaptive stress roller 13 is rotatably set between the two adaptive adjusters 35 and plays a traction role on the paper. Under the action of the adaptive adjusters 35, the adaptive stress roller 13 can move its axis height to adjust the displacement caused by the change in paper tension.

[0026] In one embodiment, the sliding part 29 is disposed on the mounting bracket 12, which is fixed inside the relief printing machine 10 by bolt fasteners.

[0027] In one embodiment, the sliding part 29 includes a slide rail 23 and a slider 24 slidably disposed on the slide rail 23. The slider 24 can slide smoothly within the effective stroke of the slide rail 23. The installation direction of the slide rail 23 is perpendicular to the paper flattening direction. Specifically, after the paper on the paper roll 14 is unwound, it passes through the functional roller 11 and then around the adaptive stress roller 13. The moving direction of the paper along the straightening trend is the same as the axially movable direction of the adaptive stress roller 13. In this way, when the stress of the paper changes and the relaxation changes, the adaptive stress roller 13 can compensate for the displacement along the moving direction, avoiding excessive or insufficient paper tension and keeping the paper tension within a certain range.

[0028] In one embodiment, the bearing housing 25 is fixed to the slider 24 by bolt fasteners.

[0029] In one embodiment, the take-up reel 26 includes a take-up box 20, within which a take-up reel 26 is rotatably mounted, winding a steel wire rope 22. One end of the steel wire rope 22 passes through a rope outlet 21 located at the bottom of the take-up box 20 and is fixed to the bearing seat 25 or the slider 24. A torsion spring box 19 is disposed on the outer shell of the take-up box 20, and the shaft of the take-up reel 26 extends into the torsion spring box 19. A coil spring is disposed within the torsion spring box 19, which provides a rotational tendency force to the take-up reel 26, keeping it in a designated position. When the adaptive stress roller 13 is subjected to the force of the paper, the potential energy of the coil spring is overcome by the traction of the steel wire rope 22 by the slider 24, at which point the coil spring tightens and stores elastic potential energy.

[0030] In one embodiment, a damping box 18 is fixedly mounted on the mounting bracket 12, the aluminum disc 27 is rotatably disposed inside the damping box 18, the winding box 20 is disposed on the outer shell of the damping box 18 and is coaxial with the damping box 18, and the shaft of the winding wheel 26 is coaxial with the shaft of the aluminum disc 27.

[0031] In one embodiment, the damping adjustment unit 28 includes an adjustment bracket 15 and a magnetic damping fork 16, wherein the magnetic damping fork 16 has a radial clearance through groove, the magnetic damping fork 16 is slidably inserted into the adjustment bracket 15, the magnetic damping fork 16 slides radially relative to the aluminum disk 27, and permanent magnets 30 are symmetrically fixed on the inner wall of the radial clearance through groove, the permanent magnets 30 are located at the front and rear end faces of the aluminum disk 27; specifically, the rotation of the aluminum disk cuts the magnetic field lines between the permanent magnets 30, thereby forming magnetic damping to suppress the rotation of the winding wheel 26, making the forward and reverse rotation of the winding wheel 26 more stable.

[0032] In one embodiment, the aluminum disc 27 is provided with three structural holes 31, 32, and 33 at radial intervals. The length and width of the three structural holes 31, 32, and 33 are the same, and the spacing increases sequentially. Specifically, the magnetic damping fork 16 moves radially so that the permanent magnet 30 corresponds to the three structural holes 31, 32, or 33. Since the spacing density of the three structural holes 31, 32, and 33 is different, the force cutting the magnetic field lines when the aluminum disc 27 rotates is different, thereby playing an adjustment role.

[0033] In one embodiment, the aluminum disk 27 is provided with uniformly variable structural holes 34 at an annular interval, and the width of the uniformly variable structural holes 34 gradually decreases from the center to the outside. Specifically, the non-penetrating portion of the aluminum disk 27 gradually decreases radially from the outside to the inside, resulting in the permanent magnet 30 having smaller magnetic damping closer to the center position within the radial adjustment range of the uniformly variable structural holes 34. Furthermore, this embodiment is a stepless linear adjustment, while the previous embodiment is a stepped adjustment. The previous embodiment is suitable for processing several types of paper and can quickly achieve the preset magnetic damping.

[0034] Preferably, the adjusting bracket 15 is also rotatably provided with a screw adjusting knob 17. The helical section of the screw adjusting knob 17 is threadedly connected to the screw hole at the tail end of the magnetic damping fork 16. Rotating the screw adjusting knob 17 can adjust the position of the magnetic damping fork 16 through the cooperating screw pair.

[0035] It should be emphasized that the embodiments described in this invention are illustrative rather than limiting. Therefore, this invention is not limited to the embodiments described in the specific implementation. Any other implementation methods derived by those skilled in the art based on the technical solutions of this invention also fall within the scope of protection of this invention.

Claims

1. A relief printing device, characterized by It comprises: a relief printing machine (10); a paper roll (14) for storing paper rolls; a functional roller (11) for guiding, flattening and de-stressing paper; two self-adapting regulators (35) symmetrically arranged in the relief printing machine (10), each comprising a sliding part (29) and a bearing seat (25) on which the sliding part (29) slides, a storage reel (36) for pulling the bearing seat (25), and a damping adjusting part (28) arranged on the side of the storage reel (36), the damping adjusting part (28) comprising a magnetic damping fork (16) with an adjustable stroke, the magnetic damping fork (16) being capable of adjusting the acting position relative to an aluminum disc (27) rotating in the storage reel (36), the aluminum disc being coaxial with the storage reel (36), and the magnetic damping force acting on the aluminum disc being transmitted to the storage reel (36) to make it rotate under the damping force; a self-adapting stress roller (13) rotating between the two self-adapting regulators (35) and pulling the paper, the self-adapting stress roller (13) being capable of moving the axis height under the action of the self-adapting regulators (35) to adjust the displacement of the paper caused by the change of the paper tension.

2. A relief printing device according to claim 1, characterised in that: The sliding part (29) is arranged on a mounting bracket (12) which is fixed in the relief printing machine (10) by a bolt fastener.

3. A relief printing device according to claim 1, wherein: The sliding part (29) comprises a sliding rail (23) and a sliding block (24) arranged on the sliding rail (23), the sliding block (24) being capable of smoothly sliding in the effective stroke of the sliding rail (23), and the mounting direction of the sliding rail (23) being perpendicular to the paper flattening direction.

4. A relief printing device according to claim 3, wherein: The bearing seat (25) is fixed on the sliding block (24) by a bolt fastener.

5. A relief printing device according to claim 2, wherein: The storage reel (36) comprises a storage box (20) in which a storage reel (26) winding a steel wire rope (22) is arranged to rotate, one end of the steel wire rope (22) is pulled out through a rope outlet (21) arranged at the bottom of the storage box (20) and fixed on the bearing seat (25) or the sliding block (24), a torsion spring box (19) is arranged on the outer shell of the storage box (20), the rotating shaft of the storage reel (26) extends into the torsion spring box (19), and a coil spring is arranged in the torsion spring box (19) to provide a rotating tendency force to the storage reel (26).

6. A relief printing device according to claim 5, wherein: A damping box (18) is fixed on the mounting bracket (12), the aluminum disc (27) is arranged to rotate in the damping box (18), the storage box (20) is arranged on the outer shell of the damping box (18) and coaxial with the damping box (18), and the rotating shaft of the storage reel (26) is coaxial with the rotating shaft of the aluminum disc (27).

7. A relief printing device according to claim 1, wherein: The damping adjusting part (28) comprises an adjusting support (15) and a magnetic damping fork (16), wherein a radial avoiding through slot is arranged in the magnetic damping fork (16), the magnetic damping fork (16) is slidingly installed on the adjusting support (15), the magnetic damping fork (16) slides radially relative to the aluminum disc (27), permanent magnets (30) are symmetrically fixed on the inner wall of the radial avoiding through slot, and the permanent magnets (30) are located at the front and rear end faces of the aluminum disc (27).

8. A relief printing device according to claim 1, wherein: Radial interval gear one structure holes (31), gear two structure holes (32) and gear three structure holes (33) are arranged on the aluminum disc (27), the length and width of the gear one structure holes (31), the gear two structure holes (32) and the gear three structure holes (33) are the same, and the intervals are gradually increased.

9. A relief printing device according to claim 1, wherein: Uniformly variable structure holes (34) are annularly and interval arranged on the aluminum disc (27), and the width of the uniformly variable structure holes (34) gradually decreases from the center to the outside.

10. A relief printing device according to claim 7, wherein: A screw rod adjusting knob (17) is further rotationally arranged on the adjusting support (15), a screw thread of a screw structure section of the screw rod adjusting knob (17) is connected with a screw hole arranged at the tail end of the magnetic damping fork (16), and the position of the magnetic damping fork (16) can be adjusted by rotating the screw rod adjusting knob (17) through a matched screw pair.

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