relief printing device

Abstract

This application provides an embossing printing apparatus, belonging to the field of paper printing technology, including a worktable, a rotary disk, and multiple printing components. The worktable is horizontally mounted; the rotary disk is connected to it via an intermittent rotation mechanism, and has a set of circumferentially spaced mounting slots for embedding paper; multiple printing components are arranged around the rotary disk on the worktable at intervals. Driven by the intermittent rotation mechanism, the rotary disk rotates stepwise, aligning each mounting slot sequentially with a different printing component, realizing multi-station continuous printing processing. This application, through the intermittent rotation of the rotary disk and the cooperation of the surrounding printing components, can complete multiple embossing printing processes after a single paper loading, effectively improving processing efficiency, reducing manual intervention, and its modular structure design facilitates maintenance and expansion, making it suitable for mass embossing printing production needs.

Description

Technical Field

[0001] This utility model belongs to the technical field of paper relief printing equipment, and more specifically, it relates to a relief printing device. Background Technology

[0002] Embossed printing is a printing technique that uses mechanical pressure to create an embossed effect on the surface of paper. This technique is widely used in high-end packaging, bookbinding, embossed card production, and other fields, and can significantly enhance the visual and tactile experience of products.

[0003] Currently, the basic principle of embossing printing is to use a pair of concave and convex dies to plastically deform the paper under pressure, thereby forming a three-dimensional pattern or texture. However, when creating a high-relief effect, in order to avoid tearing the paper, the original single stamping is usually changed to multiple stampings; correspondingly, the number of pairs of concave and convex dies is also changed to correspond to different relief heights under different stamping times.

[0004] The inventors discovered that manually changing molds is time-consuming and labor-intensive, which not only affects the efficiency of the relief printing process, but also leads to a decrease in the yield rate due to incorrect operation. Utility Model Content

[0005] The purpose of this application is to provide an embossing printing apparatus to solve the technical problem in the prior art where manual mold replacement is time-consuming and labor-intensive during the production of high-relief effects, resulting in reduced efficiency of the embossing printing process.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A relief printing apparatus is provided, comprising:

[0008] A workbench, used for installation on a horizontal surface;

[0009] A rotating disk is rotatably connected to the worktable, and its upper side has one or more mounting slots for embedding paper; when there are multiple mounting slots, the multiple mounting slots are spaced apart circumferentially along the rotating disk; the rotating disk is connected to an intermittent rotation mechanism to cause the rotating disk to rotate intermittently about its own axis; and

[0010] Multiple imprinting components are arranged at intervals around the rotating disk on the worktable;

[0011] When the intermittent rotation mechanism drives the rotating disk to rotate, any one of the mounting slots can move to a position corresponding to any one of the imprinting components, so that the imprinting component can perform imprinting processing on the corresponding paper material.

[0012] In one possible implementation, each of the mounting slots has a through hole at its bottom extending to the lower side of the rotating disk, and the imprinting assembly includes:

[0013] An upper template, located above the rotating disk, is slidably connected to the worktable in the vertical direction; the lower side of the upper template has multiple concave molds for contacting the upper surface of the paper; and

[0014] The lower template is located below the rotating disk and is slidably connected to the worktable in the vertical direction; the upper side of the lower template has a plurality of punches for passing through the through hole and contacting the lower surface of the paper, and the plurality of punches correspond one-to-one with the plurality of dies;

[0015] The upper template and the lower template are connected to the worktable via a synchronous drive mechanism, which is suitable for driving the upper template and the lower template to move towards or away from each other.

[0016] In one possible implementation, the synchronous drive mechanism includes:

[0017] Two threaded sleeves are respectively fixedly installed on the upper template and the lower template;

[0018] A double-ended screw is rotatably connected to the worktable, and the double-ended screw has two threaded portions with opposite thread directions; the two threaded portions are respectively threadedly connected to two threaded sleeves; and

[0019] A first drive motor is mounted on the worktable and is connected to the double-ended screw drive to make the double-ended screw rotate.

[0020] When the first drive motor drives the double-ended screw to rotate, the double-ended screw can drive the two threaded sleeves to move towards or away from each other.

[0021] In one possible implementation, the relief printing apparatus further includes a feeding component and a discharging component; the feeding component and the discharging component are each disposed between two adjacent imprinting components along the circumferential direction of the rotating disk, and are respectively used to place paper into the mounting slot and to remove paper from the mounting slot.

[0022] In one possible implementation, the mounting slots have at least three, such that when the rotating disk rotates to a position where one of the mounting slots corresponds to any one of the imprinting components, the other two mounting slots are respectively positioned corresponding to the feeding member and the unloading member, and / or, one or more additional mounting slots are positioned corresponding to other imprinting components.

[0023] In one possible implementation, the intermittent rotation mechanism includes:

[0024] A dial is rotatably connected to the worktable, and the axis of the dial is parallel to the axis of the rotating disk; the dial also has a lever extending radially to the outside of the dial, and the axis of the lever is parallel to the axis of the dial.

[0025] A grooved wheel is coaxially and fixedly connected to the rotating disk, and its outer circumferential surface is provided with a plurality of radial grooves at equal intervals along the circumference, the number of which is the same as the number of mounting grooves; a locking surface adapted to the outer circumferential wall of the dial is provided between two adjacent radial grooves; and

[0026] A second drive motor is mounted on the worktable and is connected to the dial in a transmission manner so that the dial rotates around its own axis.

[0027] When the second drive motor drives the lever to rotate, the lever can periodically engage with each of the radial slots and drive the grooved wheel to rotate intermittently; after the lever disengages from the radial slot, the locking surface is adapted to contact the outer peripheral wall of the dial to keep the grooved wheel stationary.

[0028] In one possible implementation, the relief printing apparatus further includes:

[0029] A preheating component is disposed between the rotating disk and the worktable, and the preheating component corresponds to the feeding component, so that the preheating component can heat the paper material when the feeding component places the paper material into the mounting slot; and

[0030] A negative pressure assembly, disposed on the rotating disk, is used to generate negative pressure between each mounting slot and the paper material, so that the paper material adheres to the mounting slot.

[0031] In one possible implementation, the bottom of each mounting slot has an air intake extending to the upper side of the rotating disk, and the negative pressure assembly includes:

[0032] An exhaust fan is fixedly mounted on the rotating disc and connected to the air intake through a duct, or connected to multiple air intakes one by one through multiple ducts.

[0033] The exhaust fan is used to remove the air between the bottom of the mounting groove and the paper material to create a negative pressure, so that the paper material adheres to the bottom of the mounting groove.

[0034] In one possible implementation, each of the ducts is equipped with a solenoid valve.

[0035] In one possible implementation, there are clearance grooves between adjacent sidewalls of the mounting groove; when the paper is embedded in the mounting groove, the clearance grooves are adapted to avoid the corners of the paper.

[0036] In this embodiment, the paper to be processed is embedded in the mounting slot of the rotating disk. The rotating disk is driven to rotate intermittently around its own axis by an intermittent rotation mechanism, so that the paper in the mounting slot moves sequentially to multiple embossing components arranged around it. When the rotation stops at each step, the corresponding embossing component performs relief embossing on the paper at the current station. Through the cyclical cooperation of multiple intermittent rotations and multi-station embossing, a single sheet of paper can continuously complete multiple relief printing processes.

[0037] Compared with the prior art, the relief printing apparatus provided in this application can complete the superimposed printing of complex relief patterns synchronously or stepwise through the intermittent rotation of the rotating disk and the coordinated operation of the multi-station printing components, significantly improving production efficiency; the intermittent motion combined with precise positioning ensures the pattern alignment accuracy of multiple printing processes and improves the consistency of finished products; the modular design of the printing components can be added, removed or adjusted according to needs, with strong scalability, and the failure of a single station does not affect the overall operation; the automated cyclic processing reduces manual intervention and is suitable for large-scale standardized production scenarios, while the circumferential layout of the mounting slot optimizes space utilization. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0039] Figure 1 This is a three-dimensional structural diagram of the relief printing apparatus provided in the embodiments of this application;

[0040] Figure 2 This is a top view of the relief printing apparatus provided in the embodiments of this application;

[0041] Figure 3 A bottom view of the relief printing apparatus provided in the embodiments of this application;

[0042] Figure 4 This is a side view of the relief printing apparatus provided in an embodiment of this application.

[0043] Figure 5 This is a three-dimensional structural diagram of the rotating disk used in the embodiments of this application;

[0044] Figure 6 for Figure 5A top-view structural diagram;

[0045] Figure 7 For along Figure 6 Schematic diagram of the cross-sectional structure along line AA;

[0046] Figure 8 This is a three-dimensional structural diagram of the upper template used in the embodiments of this application;

[0047] Figure 9 This is a three-dimensional structural diagram of the lower template used in the embodiments of this application;

[0048] The following are the labeling elements in the figure:

[0049] 1. Workbench; 2. Rotary disc; 21. Mounting slot; 211. Clearance slot; 3. Imprinting assembly; 31. Upper template; 311. Die; 32. Lower template; 321. Punch; 4. Synchronous drive mechanism; 41. Threaded sleeve; 42. Double-ended screw; 43. First drive motor; 5. Intermittent rotation mechanism; 51. Dial; 511. Dial lever; 52. Grooved wheel; 521. Radial groove; 522. Locking surface; 53. Second drive motor; 6. Preheating component; 7. Negative pressure assembly; 71. Air inlet; 72. Exhaust fan; 73. Air duct; 731. Solenoid valve; 8. Paper material; 91. Feeding component; 92. Unloading component. Detailed Implementation

[0050] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0051] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0052] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0054] Please refer to the following: Figures 1 to 9 The relief printing apparatus provided in this application will now be described. The relief printing apparatus includes a worktable 1, a rotating disk 2, and multiple printing components 3.

[0055] Workbench 1 is used to be installed on a horizontal surface.

[0056] The rotating disk 2 is rotatably connected to the workbench 1, and its upper side has one or more mounting slots 21 for embedding paper material 8; when there are multiple mounting slots 21, the multiple mounting slots 21 are spaced apart along the circumference of the rotating disk 2; the rotating disk 2 is connected to an intermittent rotation mechanism 5, so that the rotating disk 2 rotates intermittently about its own axis; and

[0057] Multiple imprinting components 3 are arranged at intervals around the rotating disk 2 on the worktable 1;

[0058] When the intermittent rotating mechanism 5 drives the rotating disk 2 to rotate, any one of the mounting slots 21 can move to a position corresponding to any one of the imprinting components 3, so that the imprinting component 3 can perform imprinting processing on the corresponding paper material 8.

[0059] The workbench 1 serves as a base fixing device. The rotating disk 2 achieves distributed rotation through the intermittent rotation mechanism 5. Multiple mounting slots 21 distributed around it are used to support the paper material 8. Multiple printing components 3 are arranged around the rotating disk 2. When the rotating disk 2 rotates intermittently, the mounting slots 21 are aligned with different printing stations in sequence to achieve continuous processing of multiple processes.

[0060] By adopting the above technical solution, multi-station collaboration can be achieved. Through the intermittent rotation of the rotary disk 2, the paper material 8 flows between different printing stations, supporting the superimposed printing or step-by-step processing of complex reliefs. Multiple mounting slots 21 can simultaneously carry multiple sheets of paper material 8, realizing parallel processing, reducing idle time, and improving work efficiency. The printing components 3 are set independently, which makes it easy to add or remove stations according to process requirements and adapt to different relief complexities.

[0061] In this embodiment, the paper material 8 to be processed is embedded in the mounting groove 21 of the rotating disk 2. The rotating disk 2 is driven to rotate intermittently around its own axis by the intermittent rotation mechanism 5, so that the paper material 8 in the mounting groove 21 moves sequentially to the multiple embossing components 3 arranged around it. When the rotation stops at each step, the corresponding embossing component 3 performs relief embossing on the paper material 8 at the current station. Through the cyclical cooperation of multiple intermittent rotations and multi-station embossing, a single sheet of paper material 8 can continuously complete multiple relief printing processes.

[0062] Compared with the prior art, the relief printing apparatus provided in this application embodiment can complete the superimposed printing of complex relief patterns synchronously or stepwise through the intermittent rotation of the rotating disk 2 and the coordinated operation of the multi-station printing assembly 3, significantly improving production efficiency; the intermittent motion combined with precise positioning ensures the pattern alignment accuracy of multiple printing processes and improves the consistency of finished products; the modularly designed printing assembly 3 can be added, removed or adjusted according to needs, with strong scalability, and the failure of a single station does not affect the overall operation; the automated cyclic processing reduces manual intervention and is suitable for large-scale standardized production scenarios, while the circumferential layout of the mounting slot 21 optimizes space utilization.

[0063] In some embodiments, the embossing component 3 described above may employ, for example... Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 Each mounting slot 21 has a through hole at the bottom that extends to the lower side of the rotating disk 2. The embossing assembly 3 includes an upper template 31 and a lower template 32.

[0064] The upper template 31 is located on the upper side of the rotating disk 2 and is slidably connected to the worktable 1 in the vertical direction; the lower side of the upper template 31 has a plurality of concave molds 311 for contacting the upper surface of the paper material 8.

[0065] The lower template 32 is located on the lower side of the rotating disk 2 and is slidably connected to the worktable 1 in the vertical direction; the upper side of the lower template 32 has a plurality of punches 321 for passing through through holes and contacting the lower surface of the paper material 8, and the plurality of punches 321 correspond one-to-one with the plurality of dies 311.

[0066] The upper template 31 and the lower template 32 are connected to the worktable 1 through a synchronous drive mechanism 4, so as to drive the upper template 31 and the lower template 32 to move towards or away from each other.

[0067] The bottom through hole of the mounting slot 21 passes through the rotating disk 2. The imprinting assembly 3 consists of an upper template 31 and a lower template 32. The upper and lower templates 32 are driven to move towards each other by a synchronous drive mechanism 4. The concave mold 311 and the convex mold 321 clamp the paper material 8 through the through hole to complete the imprinting.

[0068] By adopting the above technical solution, the upper and lower templates 32 apply pressure synchronously, avoiding paper shifting or wrinkling caused by unilateral force, and improving the symmetry and accuracy of the embossed pattern; the punch 321 passes through the through hole to accurately align with the die 311, simplifying the mold alignment process and reducing debugging time; by adjusting the stroke of the synchronous drive mechanism 4, the embossing depth can be flexibly controlled.

[0069] In some embodiments, the aforementioned synchronous drive mechanism 4 may employ, for example, Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 The synchronous drive mechanism 4 includes two threaded sleeves 41, a double-ended screw 42, and a first drive motor 43.

[0070] Two threaded sleeves 41 are fixedly mounted on the upper template 31 and the lower template 32, respectively.

[0071] The double-ended screw 42 is rotatably connected to the worktable 1, and has two threaded portions with opposite thread directions; the two threaded portions are respectively threadedly connected to two threaded sleeves 41; and

[0072] The first drive motor 43 is mounted on the workbench 1 and is connected to the double-ended screw 42 for transmission, so that the double-ended screw 42 rotates.

[0073] When the first drive motor 43 drives the double-ended screw 42 to rotate, the double-ended screw 42 can drive the two threaded sleeves 41 to move towards or away from each other.

[0074] The double-ended screw 42 has reverse threads at both ends, which mesh with the threaded sleeves 41 of the upper and lower templates 32 respectively. When the first drive motor 43 drives the double-ended screw 42 to rotate, the reverse threads drive the upper and lower templates 32 to move synchronously in opposite directions or in opposite directions. By adopting the above technical solution, the reverse thread design ensures that the upper and lower templates 32 move at the same speed, eliminating asynchronous errors. The screw drive has high rigidity, is suitable for high-load scenarios, and is not easily worn after long-term use. The mechanical transmission has low energy loss and is more environmentally friendly than hydraulic / pneumatic systems.

[0075] In some embodiments, the above-described relief printing apparatus may employ, for example... Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 The relief printing device also includes a feeding component 91 and a discharging component 92; the feeding component 91 and the discharging component 92 are both arranged between two adjacent printing components 3 along the circumference of the rotating disk 2, and are respectively used to place the paper material 8 into the mounting groove 21 and to remove the paper material 8 from the mounting groove 21.

[0076] The loading component 91 and unloading component 92 are located between adjacent printing stations and rotate intermittently in sync with the rotating disk 2 to achieve automatic loading and unloading of paper material 8. By adopting the above technical solution, loading and unloading functions can be integrated, reducing manual intervention. Loading and unloading operations can be completed when the rotating disk 2 stops, avoiding processing interruptions caused by loading and unloading, and improving the overall efficiency of the equipment.

[0077] In some embodiments, the mounting slot 21 may be as follows: Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 The mounting slot 21 has at least three slots. When the rotating disk 2 rotates to a position where one of the mounting slots 21 corresponds to any one of the imprinting components 3, the other two mounting slots 21 are respectively in positions corresponding to the feeding component 91 and the unloading component 92, and / or, one or more additional mounting slots 21 are in positions corresponding to other imprinting components 3.

[0078] At least three mounting slots 21 are distributed circumferentially. The rotating disk 2 rotates one station interval at a time, so that one mounting slot 21 is aligned with the imprinting station, and the other two are aligned with the loading and unloading stations respectively, forming a cyclic operation chain. By adopting the above technical solution, the multi-mounting slot 21 and multi-station layout reduces the equipment footprint. Processing, loading and unloading are carried out simultaneously, and multiple tasks can be completed in a single rotation, which significantly shortens the production cycle. If one station fails, the other stations can continue to operate, reducing the risk of equipment downtime.

[0079] In some embodiments, the intermittent rotation mechanism 5 described above may employ, for example... Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 The intermittent rotation mechanism 5 includes a dial 51, a grooved wheel 52, and a second drive motor 53.

[0080] The dial 51 is rotatably connected to the worktable 1, and the axis of the dial 51 is parallel to the axis of the rotating disk 2; the dial 51 also has a lever 511 extending radially to the outside of the dial 51, and the axis of the lever 511 is parallel to the axis of the dial 51.

[0081] The grooved wheel 52 is coaxially and fixedly connected to the rotating disk 2, and its outer circumferential surface is provided with multiple radial grooves 521 at equal intervals along the circumferential direction. The number of radial grooves 521 is the same as the number of mounting grooves 21. There is a locking surface 522 between two adjacent radial grooves 521 that is adapted to the outer circumferential wall of the dial 51.

[0082] The second drive motor 53 is mounted on the worktable 1 and is connected to the dial 51 for transmission, so that the dial 51 rotates around its own axis.

[0083] When the second drive motor 53 drives the lever 511 to rotate, the lever 511 can periodically engage with each radial groove 521 and drive the grooved wheel 52 to rotate intermittently; after the lever 511 disengages from the radial groove 521, the locking surface is adapted to contact the outer peripheral wall of the dial 51 to keep the grooved wheel 52 stationary.

[0084] The Geneva wheel 52 mechanism consists of a dial 51 and a Geneva wheel 52. The second drive motor 53 drives the dial 51 to rotate continuously. The lever 511 periodically engages with the radial groove 521 of the Geneva wheel 52, driving the Geneva wheel 52 to rotate intermittently. After the lever 511 disengages, the locking surface 522 contacts the outer wall of the dial 51, keeping the Geneva wheel 52 stationary. By adopting the above technical solution, the number of Geneva wheels 52 and mounting grooves 21 are matched, ensuring accurate rotation angle and correct alignment of work positions. The locking surface 522 and the outer circumferential surface of the dial 51 are physically limited, which can prevent the rotating disk 2 from shifting due to inertia and improve the stability of the rotating disk 2 when it stops. Furthermore, the Geneva wheel 52 mechanism adopts a purely mechanical structure, has strong anti-interference ability, and is suitable for high-frequency start-stop scenarios.

[0085] In some embodiments, the above-described relief printing apparatus may employ, for example... Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 The relief printing device also includes a preheating component 6 and a negative pressure component 7.

[0086] The preheating component 6 is located between the rotating disk 2 and the worktable 1, and the preheating component 6 corresponds to the feeding component 91, so that when the feeding component 91 places the paper material 8 into the mounting groove 21, the preheating component 6 can heat the paper material 8; the preheating component 6 can heat and soften the paper material 8 when feeding the paper material 8, reducing the risk of printing cracks, especially suitable for thick paper or special paper, and avoiding deformation and damage of the paper material 8 during the printing process;

[0087] The negative pressure component 7 is installed on the rotating disk 2 to generate negative pressure between each mounting groove 21 and the paper material 8, so that the paper material 8 adheres to the mounting groove 21; the negative pressure component 7 draws air to make the paper material 8 stick tightly to the bottom of the mounting groove 21, preventing the paper material 8 from shifting during printing.

[0088] By adopting the above technical solution, the combined use of preheating and negative pressure can ensure that the embossed pattern is clear after imprinting.

[0089] In some embodiments, the negative pressure component 7 described above can be as follows: Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 Each mounting slot 21 has an air intake 71 extending to the upper side of the rotating disk 2 at the bottom of the slot, and the negative pressure assembly 7 includes an exhaust fan 72.

[0090] The exhaust fan 72 is fixedly mounted on the rotating disk 2 and is connected to the air intake 71 through the air duct 73, or is connected to multiple air intakes 71 one by one through multiple air ducts 73.

[0091] The exhaust fan 72 is used to remove the air between the bottom of the mounting groove 21 and the paper material 8 to create a negative pressure, so that the paper material 8 adheres to the bottom of the mounting groove 21.

[0092] The air intake 71 at the bottom of each mounting slot 21 is connected to the exhaust fan 72 through the air duct 73. The exhaust creates negative pressure, causing the paper material 8 to adhere tightly to the bottom of the slot. The multi-duct design 73 allows for independent control of the adsorption state of each mounting slot 21. By adopting the above technical solution, the power of the exhaust fan 72 can be adjusted to accommodate paper materials 8 with different weights and surface properties. The multi-duct design 73 allows for selective adsorption, such as activating only the current station, reducing energy consumption. The negative pressure can be immediately released after the exhaust fan 72 is turned off, facilitating rapid unloading.

[0093] In some embodiments, the aforementioned duct 73 may be adopted as follows: Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 Each air duct 73 is equipped with a solenoid valve 731.

[0094] The solenoid valve 731 on each duct 73 independently controls the airflow and stops the negative pressure adsorption of a specific mounting slot 21 as needed. By adopting the above technical solution, the solenoid valve 731 is linked with the position signal of the rotating disk 2, and the adsorption is activated only at the processing station, saving energy. In the event of a failure in a certain duct 73, the corresponding solenoid valve 731 can be closed separately without affecting other stations.

[0095] In some embodiments, the mounting slot 21 may be as follows: Figures 1 to 9 The structure shown is described in the following document. Figures 1 to 9 Each adjacent sidewall of the mounting groove 21 has a clearance groove 211; when the paper material 8 is embedded in the mounting groove 21, the clearance groove 211 is adapted to avoid the corner of the paper material 8.

[0096] The clearance groove 211 on the side wall of the mounting groove 21 provides physical clearance space for the corners of the paper material 8, avoiding friction or folding during embedding; the clearance groove 211 reduces mechanical contact and prevents the corners from curling or tearing; operators or robotic arms can visually align the paper material 8 with the clearance groove 211, improving feeding efficiency; the clearance groove 211 is designed to be expandable into an adjustable structure, supporting special shapes such as circles and polygons.

[0097] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A relief printing device, characterized in that include: A workbench, used for installation on a horizontal surface; A rotating disk is rotatably connected to the worktable, and its upper side has one or more mounting slots for embedding paper; when there are multiple mounting slots, the multiple mounting slots are spaced apart circumferentially along the rotating disk; the rotating disk is connected to an intermittent rotation mechanism to cause the rotating disk to rotate intermittently about its own axis; and Multiple imprinting components are arranged at intervals around the rotating disk on the worktable; When the intermittent rotation mechanism drives the rotating disk to rotate, any one of the mounting slots can move to a position corresponding to any one of the imprinting components, so that the imprinting component can perform imprinting processing on the corresponding paper material.

2. The relief printing device of claim 1, wherein Each of the mounting slots has a through hole at its bottom extending to the lower side of the rotating disk, and the embossing assembly includes: An upper template, located above the rotating disk, is slidably connected to the worktable in the vertical direction; the lower side of the upper template has multiple concave molds for contacting the upper surface of the paper; and The lower template is located below the rotating disk and is slidably connected to the worktable in the vertical direction; the upper side of the lower template has a plurality of punches for passing through the through hole and contacting the lower surface of the paper, and the plurality of punches correspond one-to-one with the plurality of dies; The upper template and the lower template are connected to the worktable via a synchronous drive mechanism, which is suitable for driving the upper template and the lower template to move towards or away from each other.

3. The relief printing device of claim 2, wherein The synchronous drive mechanism includes: Two threaded sleeves are respectively fixedly installed on the upper template and the lower template; A double-ended screw is rotatably connected to the worktable, and the double-ended screw has two threaded portions with opposite thread directions; the two threaded portions are respectively threadedly connected to two threaded sleeves; and A first drive motor is mounted on the worktable and is connected to the double-ended screw drive to make the double-ended screw rotate. When the first drive motor drives the double-ended screw to rotate, the double-ended screw can drive the two threaded sleeves to move towards or away from each other.

4. The relief printing device of claim 1, wherein The relief printing device further includes a feeding component and a discharging component; the feeding component and the discharging component are both disposed between two adjacent printing components along the circumference of the rotating disk, and are respectively used to place paper into the mounting slot and to remove paper from the mounting slot.

5. The relief printing apparatus as described in claim 4, characterized in that, The mounting slots have at least three, and when the rotating disk rotates to a position where one of the mounting slots corresponds to any one of the imprinting components, the other two mounting slots are respectively positioned corresponding to the feeding component and the unloading component, and / or, one or more of the other mounting slots are positioned corresponding to the other imprinting components.

6. The relief printing apparatus as described in claim 5, characterized in that, The intermittent rotation mechanism includes: A dial is rotatably connected to the worktable, and the axis of the dial is parallel to the axis of the rotating disk; the dial also has a lever extending radially to the outside of the dial, and the axis of the lever is parallel to the axis of the dial. A grooved wheel is coaxially and fixedly connected to the rotating disk, and its outer circumferential surface is provided with a plurality of radial grooves at equal intervals along the circumference, the number of which is the same as the number of mounting grooves; a locking surface adapted to the outer circumferential wall of the dial is provided between two adjacent radial grooves; and A second drive motor is mounted on the worktable and is connected to the dial in a transmission manner so that the dial rotates around its own axis. When the second drive motor drives the lever to rotate, the lever can periodically engage with each of the radial slots and drive the grooved wheel to rotate intermittently; after the lever disengages from the radial slot, the locking surface is adapted to contact the outer peripheral wall of the dial to keep the grooved wheel stationary.

7. The relief printing apparatus as described in claim 4, characterized in that, The relief printing device also includes: A preheating component is disposed between the rotating disk and the worktable, and the preheating component corresponds to the feeding component, so that the preheating component can heat the paper material when the feeding component places the paper material into the mounting slot; and A negative pressure assembly, disposed on the rotating disk, is used to generate negative pressure between each mounting slot and the paper material, so that the paper material adheres to the mounting slot.

8. The relief printing apparatus as described in claim 7, characterized in that, Each of the mounting slots has an air intake at its bottom that extends to the upper side of the rotating disk, and the negative pressure assembly includes: An exhaust fan is fixedly mounted on the rotating disc and connected to the air intake through a duct, or connected to multiple air intakes one by one through multiple ducts. The exhaust fan is used to remove the air between the bottom of the mounting groove and the paper material to create a negative pressure, so that the paper material adheres to the bottom of the mounting groove.

9. The relief printing apparatus as described in claim 8, characterized in that, Each of the aforementioned air ducts is equipped with a solenoid valve.

10. The relief printing apparatus as claimed in claim 1, characterized in that, Each adjacent sidewall of the mounting groove has a clearance groove; when the paper is embedded in the mounting groove, the clearance groove is adapted to avoid the corner of the paper.

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