Deviation rectifying system for composite discharging and gravure feeding

Abstract

The utility model discloses a composite discharging and gravure feeding deviation rectifying system which comprises a paper unwinding unit, a film unwinding device, a composite unit and a gravure printing unit, and the composite unit is used for coating transfer glue on a film and compositing the film on body paper to form composite paper; a preheating and primary deviation rectifying device for preheating and primary deviation rectifying of unwound raw paper is arranged between the compounding unit and the paper unwinding unit; the output end of the composite unit is provided with a drying box for drying and curing the composite paper by hot air; a tension adjusting device is arranged at the discharging end of the drying box, and a stripping and winding unit for stripping the base film on the composite paper is arranged on the lower side of the discharging end of the drying box. A waste film winding device used for winding and collecting stripped base film waste is further arranged on the lower side of the drying box, and a feeding traction deviation rectifying device used for conducting secondary deviation rectifying on the compounded transfer paper is further arranged between the stripping winding unit and the gravure printing unit. The whole device realizes self-adaptive adjustment of tension and deviation correction of paper unwinding and winding and unwinding before and after compounding.

Description

Technical field

[0001] The utility model relates to a gravure printing deviation correction technology, in particular to a compound discharging and gravure printing material feeding correction system. [Background Technology]

[0002] At present, with the development of technology, in the gravure production process of cigarette label paper, it is often compounded with thin films such as aluminum-coated film or laser film before printing to give it a novel and bright appearance, and then the composite paper with the film compounded is used for overprinting.

[0003] As a result, during the simultaneous gravure printing of paper, the aluminized or laser film must first be adjusted online before being laminated with the paperboard. After laminating the aluminized or laser film with the paper, the base film on the surface of the aluminized or laser film must be peeled off online using a stripping machine so that the paper can be continuously fed into the next step of overprinting. This process involves multiple steps: unwinding the paper, unwinding the aluminized or laser film before lamination, rewinding the base film after lamination, and feeding the overprint material before gravure printing. This places extremely high demands on the tension, web correction accuracy, and splicing and docking of the entire production system. Currently, the requirements for overprinting accuracy on multi-color, high-speed gravure printing presses are becoming increasingly stringent. Failure to effectively control the tension and web correction of the material not only affects the splicing during lamination but also leads to serious inaccuracies in the subsequent overprinting and docking, affecting product quality and yield. There is an urgent need to improve the existing tension and web correction systems to ensure a stable paper splicing process and subsequent online printing production when feeding the gravure material after lamination. [Utility Model Content]

[0004] The utility model provides a deviation correction system for composite material discharging and gravure printing material feeding. Through the joint control of multiple groups of deviation correction and tension control, online linkage control of paper unwinding and winding and unwinding of base film peeling before and after composite is realized, so as to achieve accurate positioning of overprinting material feeding and continuous production, and effectively improve production efficiency.

[0005] The technical solution adopted by the utility model to solve its technical problems is:

[0006] The correction system for composite discharging and gravure feeding is used for the adaptive adjustment of the tension and correction of paper unwinding and rewinding before and after composite, and includes a paper unwinding unit, a film unwinding device, a composite unit and a gravure printing unit. The paper unwinding unit is used for caching and pulling the raw paper, and the film unwinding device is located at the rear side of the composite unit and is used to unwind the film to the composite unit.

[0007] The composite unit applies transfer glue to the film supplied by the film unwinding device through a screen roller, and composites the film onto the base paper unwound by the paper unwinding unit to form composite paper;

[0008] A preheating and primary deviation correction device is also provided between the compounding unit and the paper unwinding unit to preheat the unwinding base paper before compounding to facilitate compounding and perform primary deviation correction before synchronous alignment with the film for compounding;

[0009] The composite paper output end corresponding to the composite unit is provided with a drying box for hot air drying and curing the composite paper;

[0010] The composite paper discharge end of the drying box is provided with a tension adjustment device for adjusting the tension of the composite paper after drying;

[0011] A peeling and winding unit is provided on the lower side of the drying box discharge end corresponding to the tension adjustment device, which peels off the base film on the composite paper after drying and tension adjustment to form transfer paper;

[0012] The stripping and winding unit is further provided with a waste film winding device on the lower side of the drying box in the opposite direction of the composite paper feeding direction for winding and collecting the base film waste after stripping;

[0013] The gravure printing unit is used to perform multiple gravure printing on the transfer paper peeled by the peeling and winding unit;

[0014] A feeding traction and correction device is also provided between the stripping and winding unit and the gravure printing unit for performing secondary correction on the composite transfer paper to facilitate accurate docking when feeding the overprinting paper.

[0015] Preferably, the paper unwinding unit includes a first unwinding mechanism, a second unwinding mechanism and a splicing mechanism. The first unwinding mechanism and the second unwinding mechanism are used for switching the output supply of the base paper roll during unwinding. The splicing mechanism is used to perform zero-speed docking and splicing of the end\head end of the base paper output by the first unwinding mechanism with the head end\end of the base paper output by the second unwinding mechanism.

[0016] Preferably, the paper unwinding unit further comprises a paper storage mechanism provided on the upper side of the first unwinding mechanism, the second unwinding mechanism and the splicing mechanism, for continuously feeding paper with constant tension.

[0017] The beneficial effects of the utility model are:

[0018] In the utility model, during the unwinding of paper, before the feeding of overprinting, and during the peeling and unwinding of the base films before and after compounding, the paper storage mechanism, the preheating and primary deviation correction device, the tension adjustment device and the feeding traction deviation correction device are used to realize the joint control of multiple groups of tension control and deviation correction, so as to achieve the online linkage control of the unwinding of paper and the unwinding of the base films before and after compounding, to achieve the accurate positioning of the overprinting feeding and continuous production, and to effectively improve the production efficiency.

Brief Description of the Drawings

[0019] Figure 1 It is a main structural diagram of the present utility model. [Specific implementation method]

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Correction system for composite outfeed and gravure infeed, such as Figure 1 As shown, it is used for the adaptive adjustment of the tension and deviation correction of the unwinding and rewinding before and after paper unwinding and laminating, including a paper unwinding unit 1, a film unwinding device 2, a laminating unit 3 and a gravure printing unit 4. The paper unwinding unit 1 is used for caching and pulling the raw paper, and the film unwinding device 2 is located at the rear side of the laminating unit 3 and is used to discharge the film to the laminating unit 3; the laminating unit 3 coats transfer glue on the film supplied by the film unwinding device 2 through a screen roller, and laminates the film on the raw paper discharged from the paper unwinding unit 1 to form a composite paper; a preheating process for the unwinding raw paper before laminating is provided between the laminating unit 3 and the paper unwinding unit 1 to facilitate laminating and laminating. A preheating and primary deviation correction device 5 is provided for synchronous alignment and compounding with the film after primary deviation correction; wherein, the paper unwinding unit 1 includes a first unwinding mechanism 1a, a second unwinding mechanism 1b and a splicing mechanism 1c, the first unwinding mechanism 1a and the second unwinding mechanism 1b are used for switching and outputting the base paper rolls during unwinding, and the splicing mechanism 1c is used for zero-speed docking and splicing the end\head end of the base paper output by the first unwinding mechanism 1a with the head\end of the base paper output by the second unwinding mechanism 1b; a paper storage mechanism 1d for continuous paper feeding with constant tension is also provided on the upper side of the first unwinding mechanism 1a, the second unwinding mechanism 1b and the splicing mechanism 1c.

[0022] Continue as Figure 1As shown, a drying box 6 for hot air drying and curing the composite paper is further provided at the composite paper output end corresponding to the composite unit 3, a tension adjustment device 7 for adjusting the tension of the dried composite paper is provided at the composite paper discharge end of the drying box 6, a peeling and winding unit 8 for peeling off the base film on the composite paper after drying and tension adjustment to form transfer paper is provided at the lower side of the drying box 6 discharge end corresponding to the tension adjustment device 7, and a waste film winding device 9 for winding and collecting the peeled base film waste is further provided at the lower side of the drying box 6 along the opposite direction of the composite paper feeding of the peeling and winding unit 8; the gravure printing unit 4 is used to perform multiple embossing and concave printing on the transfer paper after composite peeling by the peeling and winding unit 8; a feed traction correction device 10 for performing secondary deviation correction on the composite transfer paper to facilitate accurate docking when overprinting and feeding is further provided between the peeling and winding unit 8 and the gravure printing unit 4.

[0023] In this embodiment, through the paper storage mechanism, the preheating and primary deviation correction device 5, the tension adjustment device 7 and the feed traction deviation correction device 10, the combined control of multiple groups of tension control and deviation correction is realized, so as to achieve the online linkage control of the unwinding of the paper and the winding and unwinding of the base film before and after lamination, so as to achieve the accurate positioning of the overprint feed and continuous production, and effectively improve the production efficiency.

[0024] In the description of the present utility model, it should be noted that the terms "front", "rear", "inside", "outside", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as a limitation on the present utility model.

[0025] The above-described embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of implementation of the present invention. Any equivalent changes based on the shape, structure, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. The correction system for composite discharging and gravure feeding is used for the adaptive adjustment of tension and correction of paper unwinding and rewinding before and after composite, and its characteristics are: It includes a paper unwinding unit, a film unwinding device, a compound unit and a gravure printing unit. The paper unwinding unit is used for caching and pulling the raw paper. The film unwinding device is located at the rear side of the compound unit and is used to unwind the film to the compound unit. The composite unit applies transfer glue to the film supplied by the film unwinding device through a screen roller, and composites the film onto the base paper unwound by the paper unwinding unit to form composite paper; A preheating and primary deviation correction device is also provided between the compounding unit and the paper unwinding unit to preheat the unwinding base paper before compounding to facilitate compounding and perform primary deviation correction before synchronous alignment with the film for compounding; The composite paper output end corresponding to the composite unit is provided with a drying box for hot air drying and curing the composite paper; The composite paper discharge end of the drying box is provided with a tension adjustment device for adjusting the tension of the composite paper after drying; A peeling and winding unit is provided on the lower side of the drying box discharge end corresponding to the tension adjustment device, which peels off the base film on the composite paper after drying and tension adjustment to form transfer paper; The stripping and winding unit is further provided with a waste film winding device on the lower side of the drying box in the opposite direction of the composite paper feeding direction for winding and collecting the base film waste after stripping; The gravure printing unit is used to perform multiple gravure printing on the transfer paper peeled by the peeling and winding unit; A feeding traction and correction device is also provided between the stripping and winding unit and the gravure printing unit for performing secondary correction on the composite transfer paper to facilitate accurate docking when feeding the overprinting paper.

2. The correction system for composite discharging and gravure feeding according to claim 1, characterized in that: The paper unwinding unit includes a first unwinding mechanism, a second unwinding mechanism and a splicing mechanism. The first unwinding mechanism and the second unwinding mechanism are used for switching the output supply of the base paper roll during unwinding. The splicing mechanism is used to perform zero-speed docking and splicing of the tail end\head end of the base paper output by the first unwinding mechanism with the head end\tail end of the base paper output by the second unwinding mechanism.

3. The correction system for composite discharging and gravure feeding according to claim 2, characterized in that: The paper unwinding unit further includes a paper storage mechanism disposed on the upper side of the first unwinding mechanism, the second unwinding mechanism and the splicing mechanism, and used for continuously feeding paper with constant tension.

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