A digital printing machine integrating flexographic printing and hot stamping.

Abstract

This invention discloses an integrated digital printing machine for flexographic printing and hot stamping, comprising: a main unwinding assembly, on which a plurality of substrate layers are fitted; a flexographic printing assembly for uniformly printing ink patterns onto the substrate surface; a hot stamping film assembly for covering the printed patterns on the substrate with hot stamping film; and a frame, on which the main unwinding assembly, flexographic printing assembly, and hot stamping film assembly are sequentially arranged. This invention combines traditional flexographic printing technology with digital printing technology, enriching the functionality of the digital printing machine; the flexographic printing stand preceding the digital printing allows for varnishing processes, resulting in better digital printing effects; the hot stamping film assembly is positioned after the flexographic printing assembly, enabling integrated hot stamping film production, which streamlines the processing, saves time, and simplifies equipment integration; it is compatible with both coating and hot stamping processes, allowing for hot stamping followed by digital printing to meet specific customer needs.

Description

Technical Field

[0001] This invention relates to the field of digital printing equipment technology, and mainly to a digital printing machine that integrates flexographic printing and hot stamping. Background Technology

[0002] Currently, digital printing equipment has a relatively simple function, merely printing patterns onto material rolls. However, as product requirements gradually increase, printing processes are becoming more complex, requiring the application of coatings to the materials before printing. Existing digital printing equipment only has simple coating devices; the process of laminating hot stamping film onto the substrate surface requires specialized hot stamping film lamination equipment, making the substrate printing process quite cumbersome.

[0003] Furthermore, the substrate coating path and digital printing path are quite convoluted and complicated, resulting in a long coating and printing time. After printing, the printed pattern is easily damaged, and the printing effect does not meet higher requirements. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a digital printing machine that integrates flexographic printing technology, digital printing effect, and hot stamping film lamination.

[0005] The technical problem to be solved by this invention can be achieved by the following technical solution:

[0006] A digital printing machine integrating flexographic printing and hot stamping, characterized in that it comprises:

[0007] A main unwinding assembly, wherein several layers of substrate are sleeved on the main unwinding roller of the main unwinding assembly;

[0008] Flexographic printing components are used to uniformly print ink patterns onto the surface of a substrate.

[0009] Hot stamping film assembly, used to cover the printed pattern on the substrate with hot stamping film;

[0010] The main unwinding assembly, flexographic printing assembly, and hot stamping film assembly are sequentially mounted on the frame.

[0011] In a preferred embodiment of the present invention, a web guiding component, a dust collector, and a corona generator are sequentially arranged between the main unwinding component and the flexographic printing component. The web guiding component is used to adjust the two ends of the substrate and the central axis perpendicular to the web guiding roller. The dust collector and the corona generator are used to improve the printing quality of the substrate.

[0012] In a preferred embodiment of the present invention, the dust collector includes a dust collection bracket and a pair of dust collection rollers horizontally disposed on the dust collection bracket.

[0013] In a preferred embodiment of the present invention, the flexographic printing assembly includes a flexographic printing support, a flexographic plate holder, a flexographic roller, and a printing plate roller arranged sequentially; the flexographic roller and the printing plate roller are arranged sequentially on the flexographic plate holder.

[0014] The flexographic printing assembly further includes a first auxiliary flexographic printing roller and a second auxiliary flexographic printing roller. The first auxiliary flexographic printing roller and the second auxiliary flexographic printing roller are respectively disposed on the input and output substrate paths of the flexographic printing bracket, and the first auxiliary flexographic printing roller and the second auxiliary flexographic printing roller are located at the bottom corner of the inverted trapezoid.

[0015] In a preferred embodiment of the present invention, the hot stamping film assembly includes a hot stamping bracket, a hot stamping unwinding roller, a hot stamping composite roller, a hot stamping UV curing lamp, a hot stamping peeling roller, and a hot stamping rewinding roller arranged sequentially, with each roller on the conveying path of the hot stamping film; the hot stamping composite roller, the hot stamping UV curing lamp, and the hot stamping peeling roller are respectively located on the outer periphery of the printing plate roller.

[0016] In a preferred embodiment of the present invention, the hot stamping film assembly is provided with a first auxiliary hot stamping roller and a second auxiliary hot stamping roller in a downwardly inclined direction to the right of the second auxiliary flexographic roller, and the substrate output path of the second auxiliary hot stamping roller is connected to the printing assembly; the substrate hot stamping path is V-shaped in general.

[0017] In a preferred embodiment of the present invention, the flexographic hot stamping composite digital printing machine further includes a printing component, a curing component, a laminating component, a coating component, and a main winding component arranged sequentially on the frame. The curing component is used to cure the printing ink on the substrate. The laminating component is used to laminate the composite material with the substrate. The coating component is used to coat and isolate the surface of the printed and laminated material. After the substrate has been coated and isolated, it is wound up by the main winding component.

[0018] In a preferred embodiment of the present invention, the printing assembly includes a plurality of front printing rollers arranged sequentially on the frame and a plurality of printing rollers arranged sequentially; the substrate path of the plurality of front printing rollers is in the shape of an inverted U-shape, and the substrate path of the plurality of printing rollers is an arc shape with the opening facing downward.

[0019] In a preferred embodiment of the present invention, the composite component includes a composite unwinding roll, a composite device, and a composite winding roll sequentially arranged on the frame. The composite unwinding roll, the composite roll, and the composite winding roll are connected by a composite material to form a composite material path. The composite unwinding roll unwinds the composite material, and the composite material and the substrate are laminated together by the composite roll and a UV curing lamp. The base paper of the composite material is wound up by the composite winding roll. A plurality of post-composite rolls are arranged on the substrate path after the composite roll, and the substrate path of the plurality of post-composite rolls is inverted V-shaped.

[0020] In a preferred embodiment of the present invention, the coating assembly includes a plurality of front coating rollers, a coating roller, and a coating unwinding roller. The substrate path of the plurality of front coating rollers is a plurality of broken lines. The coating rollers and the coating unwinding roller are connected by composite materials to form a coating path.

[0021] The beneficial effects of this invention are: a digital printing machine integrating flexographic printing and hot stamping combines traditional flexographic printing technology with digital printing technology, enriching the functions of the digital printing machine; a flexographic printing base is set before digital printing, which can be used for varnishing processes, resulting in better digital printing effects; the hot stamping film assembly is set after the flexographic printing assembly, and the integrated hot stamping film production process is more concentrated, saving time and simplifying equipment integration; it is compatible with coating and hot stamping processes, and can perform hot stamping before digital printing according to special customer needs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a digital printing machine integrating flexographic printing and hot stamping.

[0023] Figure 2 This is a schematic diagram of the flexographic coating apparatus of the present invention.

[0024] Icon labels:

[0025] Frame 10; Main unwinding assembly: main unwinding roller 11; Straightening assembly: straightener 12, straightening roller 13; Dust collector: dust collector bracket 14, dust collector roller 15; Corona machine 16.

[0026] Flexographic printing assembly 20, flexographic plate holder 21, flexographic roller 22, printing plate roller 23; inverted trapezoid 24.

[0027] Hot stamping film assembly 30, hot stamping unwinding roller 31, hot stamping composite roller 32, hot stamping UV curing lamp 33, hot stamping peeling roller 34, hot stamping take-up roller 35.

[0028] Printing assembly 40; front printing roller 41, printing roller 42. Curing assembly 50; curing roller 51, curing UV lamp 52.

[0029] Composite assembly 60; composite unwinding roller 61, composite roller 62, composite take-up roller 63; rear composite roller 64. Coating assembly 70; front coating roller 71, coating roller 72, coating unwinding roller 73. Main take-up assembly 80; front take-up roller 81, main take-up roller 82. Detailed Implementation

[0030] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below with reference to specific illustrations.

[0031] See Figures 1 to 2The diagram shows an integrated flexographic and hot stamping digital printing machine, comprising: a main unwinding assembly with several layers of substrate mounted on the main unwinding roller 11; a flexographic printing assembly 20 for uniformly printing ink patterns onto the substrate surface; a hot stamping film assembly 30 for covering the printed patterns onto the substrate with hot stamping film; and a frame 10 on which the main unwinding assembly, flexographic printing assembly 20, and hot stamping film assembly 30 are sequentially arranged. This combination of traditional flexographic printing technology and digital printing technology enriches the functionality of the digital printing machine.

[0032] Between the main unwinding assembly and the flexographic printing assembly 20, a web guiding assembly, a dust collector, and a corona generator 16 are sequentially arranged. The web guiding assembly is used to adjust the two ends of the substrate perpendicular to the central axis of the web guiding roller 13. The dust collector and the corona generator 16 are used to improve the printing quality of the substrate. Specifically, the web guiding assembly prevents the substrate from deviating and affecting the printing quality. The web guiding assembly includes a web guiding device 12 and a pair of web guiding rollers 13 respectively arranged on the front and rear sides of the web guiding device 12. The web guiding rollers 13 include a first web guiding roller 13 that rotates clockwise on the outer side and a second web guiding roller 13 that rotates counterclockwise on the inner side. A first web guiding auxiliary roller and a second web guiding auxiliary roller are sequentially connected on the output substrate path of the second set of first web guiding rollers 13.

[0033] The dust collector includes a dust collection bracket 14 and a pair of dust collection rollers 15 horizontally arranged on the dust collection bracket 14. The dust collection rollers are arranged in a pair, and there is always a horizontal substrate in the middle of the pair of dust collection rollers, so that the dust collection rollers can remove dust from each part of the substrate for a period of time (N seconds). The dust removal time is the transportation time of the same part of the substrate between the pair of dust collection rollers.

[0034] The corona machine 16 includes a corona frame and a pair of corona rollers horizontally arranged on the corona frame. A pair of vertically arranged first auxiliary corona rollers are connected to the output substrate path of the corona rollers.

[0035] The flexographic printing assembly 20 includes a flexographic printing stand, a flexographic plate holder 21, a flexographic roller 22, and a printing plate roller 23 arranged sequentially; the flexographic roller 22 and the printing plate roller 23 are sequentially mounted on the flexographic plate holder 21. The flexographic printing assembly 20 also includes a first auxiliary flexographic roller and a second auxiliary flexographic roller, which are respectively positioned on the input and output substrate paths of the flexographic printing stand, and are approximately located at the base corner of an inverted trapezoid. The flexographic printing stand positioned before digital printing allows for varnishing processes; the optimized substrate flexographic printing path saves time and results in better digital printing quality.

[0036] The hot stamping film assembly 30 includes a hot stamping bracket, a hot stamping unwinding roller 31, a hot stamping composite roller 32, a hot stamping UV curing lamp 33, a hot stamping peeling roller 34, and a hot stamping take-up roller 35 arranged in sequence, with each roller on the hot stamping film conveying path; the hot stamping composite roller 32, the hot stamping UV curing lamp 33, and the hot stamping peeling roller 34 are respectively located on the outer periphery of the printing plate roller 23.

[0037] Specifically, the hot stamping film assembly 30 has a first auxiliary hot stamping roller and a second auxiliary hot stamping roller arranged sequentially in a downward-right inclined direction on the second auxiliary flexographic printing roller. The substrate output path of the second auxiliary hot stamping roller is connected to the printing assembly 40; the substrate hot stamping path is V-shaped. The hot stamping film assembly is positioned after the flexographic printing assembly, optimizing the substrate hot stamping path and saving time. The integrated hot stamping film lamination production process further concentrates the processing technology, saving time and simplifying equipment integration.

[0038] See Figure 1 The integrated digital printing machine for flexographic hot stamping also includes a printing component 40, a curing component 50, a laminating component 60, a coating component 70, and a main winding component 80, which are sequentially arranged on the frame 10. The curing component 50 is used to cure the printing ink on the substrate, the laminating component 60 is used to laminate the composite material with the substrate, and the coating component is used to coat and isolate the surface of the printed and laminated material. After the substrate is coated and isolated, it is wound up by the main winding component 70.

[0039] The printing assembly 40 includes several front printing rollers 41 and several printing rollers 42 arranged sequentially on the frame 10; the substrate path of the several front printing rollers 41 is in the shape of an inverted U-shape, and the substrate path of the several printing rollers 42 is in the shape of an arc with the opening facing downward; the substrate printing path is optimized, saving time.

[0040] The curing assembly 50 includes several curing rollers 51 and a curing UV lamp 52. The curing path of the several curing rollers 51 is sequentially conveyed clockwise through the several curing rollers 51, then cured by the curing UV lamp 52, and finally cured by one of the printing rollers 42. The substrate path of the several curing rollers 51 is an irregular pattern.

[0041] The composite assembly 60 includes a composite unwinding roller 61, a composite device, and a composite take-up roller 63, sequentially arranged on a frame. The composite unwinding roller 61, composite roller 62, and composite take-up roller 63 are connected by a composite material to form a composite material path. The composite unwinding roller 61 unwinds the composite material, and the composite material and substrate are laminated together by the composite roller 62 and the curing UV lamp 52. The base paper of the composite material is then wound up by the composite take-up roller 63. Several post-composite rollers 64 are arranged on the substrate path after the composite roller 62, and the substrate path of the several post-composite rollers 64 is inverted V-shaped; the substrate printing path is optimized, saving time.

[0042] The coating assembly 70 includes several front coating rollers 71, coating rollers 72, and coating unwinding rollers 73. The substrate path of the several front coating rollers 71 is in the form of several broken lines. The coating rollers 72 and coating unwinding rollers 73 are connected by composite materials to form the coating path. The substrate printing path is optimized, saving time. Coating is performed after printing and lamination processes to further protect the printed pattern from damage.

[0043] The main winding assembly 80 includes a pair of horizontally arranged front winding rollers 81 and a main winding roller 82. The pair of front winding rollers 81 and the main winding roller 82 form a main winding path. The pair of front winding rollers 81 are arranged horizontally to facilitate the alignment of the two ends of the forming material during winding.

[0044] This invention is compatible with both coating and hot stamping processes, replacing the original single flexographic coating function. It can perform hot stamping before digital printing according to the customer's special needs; the modular layout facilitates later functional expansion; the paper path is optimized, making material operation more reasonable and reducing material waste; and a lamination function is added, which can be applied after printing to protect the printed pattern from damage.

[0045] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A digital printing machine integrating flexographic printing and hot stamping, characterized in that, The integrated digital printing machine for flexographic hot stamping includes a printing component, a curing component, a laminating component, a coating component, and a main winding component arranged sequentially on the frame. The curing component is used to cure the printing ink on the substrate. The laminating component is used to laminate the composite material with the substrate. The coating component is used to coat and isolate the surface of the printed and laminated material. After the substrate has undergone a film-coating and isolation treatment, it is wound up by the main winding assembly; The digital printing machine further includes: a main unwinding assembly, on which a plurality of substrate layers are sleeved; Flexographic printing components are used to uniformly print ink patterns onto the surface of a substrate. Hot stamping film assembly, used to cover the printed pattern on the substrate with hot stamping film; The main unwinding assembly, flexographic printing assembly, and hot stamping film assembly are sequentially arranged on the frame. Between the main unwinding assembly and the flexographic printing assembly, a web guiding assembly, a dust collector, and a corona generator are arranged in sequence. The web guiding assembly is used to adjust the two ends of the substrate and the central axis perpendicular to the web guiding roller. The dust collector and the corona generator are used to improve the printing quality of the substrate. The flexographic printing assembly includes a flexographic printing bracket, a flexographic plate holder, a flexographic roller, and a printing plate roller arranged in sequence; the flexographic roller and the printing plate roller are arranged in sequence on the flexographic plate holder. The flexographic printing assembly further includes a first auxiliary flexographic printing roller and a second auxiliary flexographic printing roller. The first auxiliary flexographic printing roller and the second auxiliary flexographic printing roller are respectively disposed on the input and output substrate paths of the flexographic printing bracket. The first auxiliary flexographic printing roller and the second auxiliary flexographic printing roller are located at the bottom corner of the inverted trapezoid. The hot stamping film assembly includes a hot stamping bracket, a hot stamping unwinding roller, a hot stamping composite roller, a hot stamping UV curing lamp, a hot stamping release roller, and a hot stamping take-up roller arranged in sequence, with each roller on the hot stamping film conveying path; the hot stamping composite roller, the hot stamping UV curing lamp, and the hot stamping release roller are respectively located on the outer periphery of the printing plate roller. The hot stamping film assembly has a first auxiliary hot stamping roller and a second auxiliary hot stamping roller arranged sequentially in the lower right tilt direction of the second auxiliary flexographic roller. The substrate output path of the second auxiliary hot stamping roller is connected to the printing assembly. The substrate hot stamping path is V-shaped.

2. The digital printing machine integrating flexographic hot stamping as described in claim 1, characterized in that, The dust collector includes a dust collection bracket and a pair of dust collection rollers horizontally arranged on the dust collection bracket.

3. The digital printing machine integrating flexographic hot stamping as described in claim 1, characterized in that, The printing assembly includes several front printing rollers arranged sequentially on the frame and several printing rollers arranged sequentially; the substrate path of the several front printing rollers is in the shape of an inverted U-shape, and the substrate path of the several printing rollers is an arc shape with the opening facing downwards.

4. The digital printing machine integrating flexographic hot stamping as described in claim 1, characterized in that, The composite assembly includes a composite unwinding roll, a composite device, and a composite winding roll, which are sequentially arranged on the frame. The composite unwinding roll, composite roll, and composite winding roll are connected by a composite material to form a composite material path. The composite unwinding roll unwinds the composite material, and the composite material and substrate are bonded together by the composite roll and a UV curing lamp. The base paper of the composite material is wound up by the composite winding roll. Several post-composite rolls are arranged on the substrate path after the composite roll, and the substrate path of the several post-composite rolls is inverted V-shaped.

5. The digital printing machine integrating flexographic hot stamping as described in claim 1, characterized in that, The coating assembly includes several front coating rollers, a coating roller, and a coating unwinding roller. The substrate path of the several front coating rollers is a series of broken lines. The coating rollers and the coating unwinding roller are connected by composite materials to form the coating path.

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