CN215473742U - Continuous transfer offset printing equipment - Google Patents

Abstract

The utility model relates to a continuous transfer offset printing device, wherein an unreeling unit and a film storage unit are arranged on a transfer glue coating unit, a working unreeling shaft I and a storage unreeling shaft are arranged among the unreeling unit, the film storage unit and the transfer glue coating unit, and the working unreeling shaft I and the storage unreeling shaft I are arranged in parallel or in an overlapping mode; the unwinding unit comprises a working unwinding shaft I, a to-be-unwound shaft and a cutter breaking device I, and the film storage unit comprises a floating roller I, a fixed roller, a guide roller I and a transverse deviation correcting device; the next process of the film storage unit is provided with an impression transfer stripping unit and a winding unit in a connecting mode, the impression transfer stripping unit comprises a floating roller II, a compensation roller, a deviation correction roller, a detection electric eye, a guide roller II, a rubber cylinder II and an impression cylinder II, and the rubber cylinder II, the impression cylinder II and a transfer film are extruded mutually; the winding unit comprises a winding shaft to be wound, a working unwinding shaft II, a cutter breaking device II, a working winding shaft and a storage winding shaft II.

Description

Continuous transfer offset printing equipment

Technical Field

The utility model relates to the technical field of continuous transfer offset printing equipment, in particular to continuous transfer offset printing equipment.

Background

At present, the printing products of complex alloy, silver and laser paper have the advantages of good decoration effect, high grade, exquisite appearance, anti-counterfeiting and the like, so the printing products are widely applied to the field of packaging materials of cigarettes, food, medicines and the like; however, because the PET or OPP film adopted by the composite paper cannot be degraded, the environmental protection is greatly influenced, and the printing industry starts to adopt a large amount of transfer aluminum-sprayed paper to replace the composite aluminum-plated paper. The transfer aluminum-sprayed paper has the characteristics of low production cost, environmental friendliness, suitability for the packaging requirements of high-speed printing machines, embossing machines, die-cutting machines and high-speed cigarette making machines and the like; the transfer aluminum-sprayed paper used in the existing offset printing mainly has two processing methods, namely direct aluminum-plated paper printing and indirect aluminum-plated paper (also called transfer paper) printing; the direct aluminum-plated paper printing is that the web is firstly arranged on a vacuum aluminum-plating machine for aluminum plating, and then is cut into single sheets to be printed on an offset press; the indirect aluminized paper printing is that a roll-shaped PET or OPP film is first coated with a 0.02-0.06um aluminum layer on a compounding machine, and then the aluminum layer is transferred to paper, cut into single sheets and printed on an offset press. Compared with the direct plating method, the method has the advantages that cheap paper can be adopted, and thick paper aluminizing is more economical, so that the transfer paper is widely used in offset printing.

However, the composite transfer printing equipment in the prior art consists of two independent devices, namely a composite transfer machine and an offset press, so that the method has the defects of various printing procedures, high equipment investment cost and difficulty in producing high-precision and high-quality products; in addition, in order to highlight the local decorative effect in the offset printing product, a first-ironing and then-printing process is mostly adopted; however, due to the influence of temperature and pressure in the hot stamping process, the hot stamping patterns are limited to block-shaped patterns and characters to a great extent, the hot stamping precision of fine patterns and characters is difficult to control, and the phenomena of incomplete printing and plate pasting are easy to occur; the paper is easy to deform after hot stamping, so that the image-text overprinting precision in the offset printing process is not high; the gold stamping operation is complicated and low in efficiency, the manufacture and adjustment of the gold stamping plate are time-consuming and expensive, and the requirement of high-speed offset printing on short plate printing cannot be met, so that a continuous transfer offset printing device is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a continuous transfer offset printing device, which is stable in product quality and economical and efficient in line transfer (including local transfer).

In order to solve the problems, the utility model provides continuous transfer offset printing equipment which comprises a transfer glue coating unit, a drying unit, an unreeling unit and a film storage unit, wherein the unreeling unit and the film storage unit are arranged on the transfer glue coating unit, a working unreeling shaft I and a storage unreeling shaft are arranged among the unreeling unit, the film storage unit and the transfer glue coating unit, and the working unreeling shaft I and the storage unreeling shaft I are arranged in parallel or overlapped; the unwinding unit comprises a working unwinding shaft I, a to-be-unwound shaft and a cutter breaking device I, and the film storage unit comprises a floating roller I, a fixed roller, a guide roller I and a transverse deviation correcting device; the film storage unit is provided with an impression transfer stripping unit and a winding unit in a next procedure connection mode, the impression transfer stripping unit comprises a floating roller II, a compensation roller, a deviation correction roller, a detection electric eye, a guide roller II, a blanket cylinder II and an impression cylinder II, and the blanket cylinder II, the impression cylinder II and a transfer film are mutually extruded; the winding unit comprises a winding shaft to be wound, a working unwinding shaft II, a cutter breaking device II, a working winding shaft and a storage winding shaft II, wherein the working winding shaft and the storage winding shaft II are arranged in parallel or in an overlapped mode.

The continuous transfer offset printing equipment provided by the utility model also has the following technical characteristics:

furthermore, the circumferences of the working unreeling shaft I and the storage unreeling shaft I are overlapped.

Furthermore, the maximum circumferences of the working unreeling shaft I and the storage unreeling shaft I are overlapped.

The utility model has the following beneficial effects: the following points are provided by combining specific technical means:

1. the utility model is composed of a transfer glue coating unit, a drying unit, an unreeling unit, an impression transfer stripping unit and a reeling unit, wherein a working unreeling shaft I and a storage unreeling shaft I are arranged in an overlapping mode, so that the space is saved to the maximum extent; the working winding shaft and the reserve winding shaft II are arranged in parallel or overlapped, so that the transfer base film is recovered without stopping connection; the utility model can automatically adjust the position of the film in the unwinding unit and the film storage unit through the arranged transverse deviation correcting device, the deviation correcting roller and the detection electric eye, realize the combination of the film transfer layer and the printing material through the impression transfer stripping unit, finish the transfer and the stripping, utilize the pressure among the blanket cylinder II, the impression cylinder II and the printing material, the transfer film is closely combined with the printing material coated with the adhesive under the pressure action of the transfer layer, the transfer layer is transferred to the printing material-paper from the film carrier, and the base material of the film is separated from the printing material, realize the combination of the film transfer layer and the printing material, and finish the transfer and the stripping.

2. The utility model can also be combined with automatic control equipment to automatically track and adjust the front and back and left and right positions of the transfer film according to the gauge of the sheet-fed offset press; the position and the size of the film are automatically adjusted according to the size and the running speed of the single paper and the plate distance of the transferred holographic film, so that the two films can be accurately registered; automatic control of winding and unwinding is set, so that non-stop operation is ensured, and the working efficiency is improved; the automatic positioning and roll changing realize the complete registration and butt joint of the film, improve the yield of products and the safety performance of equipment, greatly improve the production efficiency, reduce the manual input and intervention, and provide a basis for technical improvement for automatic production.

Drawings

FIG. 1 is a schematic view of a continuous transfer offset printing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a continuous transfer offset printing apparatus according to an embodiment of the present invention;

FIG. 3 is a schematic view showing a state of a rear side of a sheet feeding table of a continuous transfer offset printing apparatus according to an embodiment of the present invention;

in the figure: 1. the device comprises a transfer glue coating unit 2, a drying unit 3, an unreeling unit 4, a film storage unit 5, an impression transfer stripping unit 6, a reeling unit 9, a transfer film 17, a blanket cylinder I18, an impression cylinder I31, a working unreeling shaft I32, a reel to be unreeled 33, a knife breaking device I41, a floating roller I42, a fixed roller 43, a guide roller I44, a transverse deviation correcting device 51, a floating roller II 52, a compensating roller 53, a deviation correcting roller 54, a detection electric eye 55, a guide roller II 57, a blanket cylinder II 58, an impression cylinder II 61, a reel to be collected 62, a working unreeling shaft II 63 and a knife breaking device II.

Detailed Description

The utility model will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

As shown in fig. 1-3, a continuous transfer offset printing apparatus includes a transfer glue coating unit 1, a drying unit 2, an unwinding unit 3, and a film storage unit 4, and is characterized in that: the unwinding unit 3 and the film storage unit 4 are arranged on the transfer glue coating unit 1, a working unwinding shaft I31 and a storage unwinding shaft I are arranged among the unwinding unit 3, the film storage unit 4 and the transfer glue coating unit 1, and the working unwinding shaft I31 and the storage unwinding shaft I are arranged in parallel or in an overlapping mode; the unwinding unit 3 comprises a working unwinding shaft I31, a to-be-unwound shaft 32 and a cutter breaking device I33, and the film storage unit 4 comprises a floating roller I41, a fixed roller 42, a guide roller I43 and a transverse deviation correcting device 44; the next process of the film storage unit 4 is provided with an impression transfer stripping unit 5 and a winding unit 6 in a connecting mode, the impression transfer stripping unit 5 comprises a floating roller II 51, a compensation roller 52, a rectification roller 53, a detection electric eye 54, a guide roller II 55, a rubber cylinder II 57 and an impression cylinder II 58, and the rubber cylinder II 57, the impression cylinder II 58 and the transfer film 9 are mutually extruded; the winding unit 6 comprises a winding-waiting shaft 61, a working unwinding shaft II 62, a cutter breaking device II 63, a working winding shaft and a storage winding shaft II, wherein the working winding shaft and the storage winding shaft II are arranged in parallel or in an overlapping mode.

When the utility model is implemented, the implementation key points are as follows:

1. the utility model is composed of a transfer glue coating unit 1, a drying unit 2, an unreeling unit 3, an impression transfer stripping unit 5 and a reeling unit 6, wherein a working unreeling shaft I31 and a storage unreeling shaft I are arranged in an overlapping mode, so that the space is saved to the maximum extent; the working winding shaft and the reserve winding shaft II are arranged in parallel or overlapped, so that the transfer base film is recovered without stopping connection; the utility model can automatically adjust the position of the film in the unreeling unit 3 and the film storage unit 4 through the arranged transverse deviation correcting device 44, the deviation correcting roller 53 and the detection electric eye 54, realize the combination of a film transfer layer and a printing material through the impression transfer stripping unit 5, finish the transfer and the stripping, utilize the pressure between the rubber roller II 57, the impression roller II 58 and the printing material, the transfer film 9 is tightly combined with the printing material coated with adhesive under the pressure action of the transfer layer, the transfer layer is transferred to the printing material-paper from the film carrier, and the base material of the film is separated from the printing material, realize the combination of the film transfer layer and the printing material, and finish the transfer and the stripping.

2. The utility model can also be combined with automatic control equipment to automatically track and adjust the front and back and left and right positions of the transfer film according to the gauge of the sheet-fed offset press; the position and the size of the film are automatically adjusted according to the size and the running speed of the single paper and the plate distance of the transferred holographic film, so that the two films can be accurately registered; automatic control of winding and unwinding is set, so that non-stop operation is ensured, and the working efficiency is improved; the automatic positioning and roll changing realize the complete registration and butt joint of the film, improve the yield of products and the safety performance of equipment, greatly improve the production efficiency, reduce the manual input and intervention, and provide a basis for technical improvement for automatic production.

In an embodiment of the application, the working unreeling shaft I31 and the storage unreeling shaft I are overlapped in circumference, flexible in adjustment and wide in application range.

In an embodiment of the application, the maximum circumferences of the working unreeling shaft I31 and the storage unreeling shaft I are overlapped, so that the space is saved, the use is convenient, and the structure is simple.

In one embodiment of the present application, the glue transfer device comprises a transfer glue coating unit 1, a drying unit 2, 3, 4, 5, 6 and the like;

the transfer glue coating unit 1 utilizes a first color group of a printing machine to coat the regional or whole surface of an adhesive on a printing material such as a single piece of paper, the single piece of paper with the transfer glue is arranged in an impression transfer unit, and a transfer layer of a film carrier is transferred to the single piece of paper under the action of pressure with a transfer film;

because the adhesive used in the drying unit 2 belongs to a UV or EB photocuring drying type, the adhesive is photocured after being coated under the irradiation of ultraviolet light or EB electron beams, and the film transfer layer is tightly adhered to a single piece of paper to be printed under the action of pressure;

the unwinding unit 3 and the film storage unit 4 are arranged on the transfer glue coating unit 1, and a working unwinding shaft I31 and a storage unwinding shaft I are arranged in parallel or overlapped to ensure that a transfer film 9 is provided without stopping connection; the space is saved to the maximum extent, overlapping arrangement can be considered preferentially, and an automatic roll changing function is adopted during roll changing; the automatic adjustment of the position of the film is realized by utilizing a floating roller I41, a fixed roller 42 and a transverse deviation correcting device 44 which are arranged on the film storage unit 4;

the combination of the film transfer layer and the printing material is realized through the impression transfer stripping unit 5, the transfer and the stripping are completed, the transfer film 9 is tightly combined with the printing material coated with the adhesive under the pressure action of the transfer layer by utilizing the pressure among the blanket cylinder II 57, the impression cylinder II 58 and the printing material, the transfer layer is transferred to the printing material, namely paper from a film carrier, and the base material of the film is separated from the printing material, so that the combination of the film transfer layer and the printing material is realized, and the transfer and the stripping are completed;

the winding unit 6 is arranged above the second printing unit and comprises a to-be-wound reel 61, a working unwinding reel II 62, a cutter breaking device II 63, a working winding shaft and a storage winding shaft II, wherein the working winding shaft and the storage winding shaft II are arranged in parallel or in an overlapping mode, and the transfer base film is recovered by connecting lines without stopping;

FIGS. 1 and 2 are different from each other only in the arrangement of an unwinding shaft and a winding shaft, wherein FIG. 1 is an overlapped arrangement, FIG. 2 is a side-by-side arrangement, and the specific embodiment is described together, in a transfer glue coating unit 1, a printing material is coated on a full plate or is partially coated with a UV type adhesive or an EB type adhesive under the action of pressure by a blanket cylinder I17 and an impression cylinder I18, and under the action of a drying unit 2, the liquid adhesive is subjected to photochemical reaction to form a solid firmly adhered to a printing stock and runs to the next unit along a paper feeding path;

the unreeling unit 3 comprises a driving device, a control device, a bearing and the like, and the transfer film 9 is unreeled from the working reel, passes through the guide roller I43 and then enters the film storage unit 4;

when the unwinding unit 3 finishes the operation of unwinding the transfer film 9, the equipment automatically changes the reel, the unwinding unit 3 rotates clockwise 180 degrees, so that the position of the reel to be unwound 32 and the position of the reel to be unwound I31 are changed, the double faced adhesive tape for bonding is pasted on the back of the transfer film 9 in the reel to be unwound 32 in advance, then the reel to be unwound 32 starts to rotate, the rotation speed of the reel to be unwound I31 is gradually reduced, when the linear speed of the reel to be unwound and the linear speed of the reel to be unwound reach a set value, the phase of the transfer film 9 is consistent, the cutter breaking device I33 is started, the transfer film 9 of the reel to be unwound I31 is cut off, the transfer film 9 of the reel to be unwound 32 is bonded, and the automatic positioning and reel changing are finished; the film storage unit 4 is automatically started in the process of handing over the to-be-unwound reel 32, the stored transfer film 9 slowly moves towards the fixed roller 42 under the action of the floating roller I41 according to the conditions of machine speed and tension, and then the transfer film 9 required by normal production is continuously provided for the impression transfer stripping unit 5, after the handing over of the working unwound reel I31 and the to-be-unwound reel 32 is completed, when the speed of the working unwound reel I31 reaches the normal machine speed, the floating roller I41 in the film storage unit 4 gradually returns to the designated position, and the film storage unit 4 is ensured to always have enough transfer film 9 and transfer film 9;

the transfer film 9 is output from the film storage unit 4 through the guide roller I43, passes through the transverse deviation correcting device 44, enters the impression transfer stripping unit 5 after the transverse position is corrected, and firstly plays a role in controlling the tension stability of the film and the plate distance stretching under the action of the floating roller II 51; after passing through the floating roller II 51, the detection electric eye 54 detects the color code on one side of the transfer film 9, transmits related information to the main controller, and feeds the information processed in the main controller back to the controllers of the floating roller II 51 and the compensation roller 52 to realize accurate registration of the transfer film 9, which is not detailed herein; the compensation roller 52 can accurately control the transfer film 9 entering the embossing stripping position, and ensure the accurate registration of the film and the printing material pattern; before the transfer film 9 enters the printing unit for impression stripping, the rectification roller 53 can adjust the torsion of the film, so as to keep the transfer film 9 flat and without wrinkle;

under the action of a rubber roller II 57 and an impression roller II 58 of a later unit of the printing machine, a printing material and a transfer film 9 on a transfer glue coating unit 1 along a paper feeding route are tightly combined under the action of pressure, a transfer layer on the transfer film 9 is adhered by an adhesive and is separated downwards in the separation direction of different film feeding and paper feeding paths of a film and the printing material, and a full-page or local transfer layer is left on the printing material;

the transfer film 9 enters the winding unit 6 to complete the recovery of the base film, when the base film is automatically wound, the winding unit 6 rotates 180 degrees clockwise, the spool 61 to be wound and the working unwinding spool II 62 are switched, the double-sided adhesive tape for bonding is pasted on the axis of the spool 61 to be wound, the cutter breaking device II 63 is started, the transfer film 9 of the working winding spool is cut off, meanwhile, the transfer film 9 of the spool 61 to be wound is bonded, and the automatic winding change is completed;

in the figure 3, the unreeling unit 3 and the reeling unit 6 are arranged behind a paper feeder of the printing unit, and both adopt an automatic reel changing mode, because the limitation of space is not considered, two bearings of an unreeling shaft or a reeling shaft are arranged in parallel, the position of a floating roller II 51 is changed correspondingly, the unreeling path and the reeling path of the transfer film 9 are lengthened relatively, and the integral operation is not influenced.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (3)

1. The utility model provides a continuous transfer offset printing equipment, includes transfer glue coating unit (1), drying unit (2), unreels unit (3), film stock unit (4), its characterized in that: the unwinding unit (3) and the film storage unit (4) are arranged on the transfer glue coating unit (1), a working unwinding shaft I (31) and a storage unwinding shaft I are arranged among the unwinding unit (3), the film storage unit (4) and the transfer glue coating unit (1), and the working unwinding shaft I (31) and the storage unwinding shaft I are arranged in parallel or overlapped; the unwinding unit (3) comprises a working unwinding shaft I (31), a to-be-unwound shaft (32) and a cutter breaking device I (33), and the film storage unit (4) comprises a floating roller I (41), a fixed roller (42), a guide roller I (43) and a transverse deviation correcting device (44); an impression transfer stripping unit (5) and a winding unit (6) are arranged in the next process of the film storage unit (4) in a connecting mode, the impression transfer stripping unit (5) comprises a floating roller II (51), a compensating roller (52), a rectification roller (53), a detection electric eye (54), a guide roller II (55), a blanket cylinder II (57) and an impression cylinder II (58), and the blanket cylinder II (57), the impression cylinder II (58) and a transfer film (9) are mutually extruded; the winding unit (6) comprises a to-be-wound winding shaft (61), a working unwinding shaft II (62), a cutter breaking device II (63), a working winding shaft and a storage winding shaft II, wherein the working winding shaft and the storage winding shaft II are arranged in parallel or in an overlapping mode.

2. The continuous transfer offset printing apparatus according to claim 1, wherein: the working unreeling shaft I (31) and the storage unreeling shaft I are overlapped in circumference.

3. The continuous transfer offset printing apparatus according to claim 1, wherein: the maximum circumferences of the working unreeling shaft I (31) and the reserve unreeling shaft I are overlapped.

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