A contactless direct printing device for roll-to-roll printing of tear-off film

Abstract

The utility model discloses a kind of contactless direct printing devices of roll-to-roll printing film tearing, it is related to film tearing equipment field, including gyro wheel conveying mechanism and film tearing mechanism, film tearing mechanism is arranged between gyro wheel conveying mechanism and printing machine, film tearing mechanism includes two groups of film tearing components, two groups of film tearing components are arranged with interval up and down, and the piece material to be printed passes between two groups of film tearing components, film tearing component includes sliding base and lifting seat, sliding base has the freedom of movement along piece material conveying direction, lifting seat is installed below sliding base, lifting seat has the freedom of movement along the height direction of sliding base, winding film roller is rotatably arranged on lifting seat, the winding film roller in two groups of film tearing components respectively winds the protective film on the top of piece material and the protective film on the bottom, and the protective film on the top and the bottom of piece material is wound respectively by the winding film roller in two groups of film tearing components, contactless film tearing is realized, avoid the friction on the surface of piece material by traditional contact type film tearing, effectively prevent piece material from scratch, wrinkle and other quality problems.

Description

Technical Field

[0001] This utility model relates to the field of film-tearing equipment, specifically a non-contact direct printing device for roll-to-roll printing and film-tearing. Background Technology

[0002] In modern industrial production, roll-to-roll printing technology, with its high efficiency and continuous production characteristics, is widely used in many fields such as electronics, packaging, and decoration. This technology achieves large-scale automated printing production by continuously feeding rolls of material to the printing station, significantly improving production efficiency and reducing costs.

[0003] In roll-to-roll printing, the surface of the sheet material is usually covered with a protective film to prevent scratches, contamination, and other damage during transportation and storage. Therefore, a film-removing operation is required before printing. However, existing film-removing direct printing devices have many shortcomings. Traditional film-removing mechanisms mostly use contact-type film-removing methods, which easily cause friction on the sheet material surface during the film-removing process, leading to quality problems such as scratches and wrinkles, affecting subsequent printing results. Furthermore, the film-removing components in traditional devices are in fixed positions, making it difficult to adapt to the film-removing needs of sheets of different specifications and thicknesses, resulting in poor versatility. In addition, if the film-removed sheet material comes into direct contact with the conveyor components during the transport of the printing press, it is prone to electrostatic adsorption or secondary contamination, further affecting printing quality. Therefore, there is an urgent need to develop a roll-to-roll printing film-removing device that can achieve non-contact film-removing and direct printing, improve printing accuracy and product quality, and enhance equipment versatility. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a roll-to-roll printing non-contact direct printing device for tearing film, thereby solving the deficiencies of the prior art.

[0005] The purpose of this utility model is achieved through the following technical solution: a roll-to-roll non-contact direct printing device for film tearing, comprising a roller conveying mechanism and a film tearing mechanism, wherein the film tearing mechanism is arranged between the roller conveying mechanism and the printing press, the film tearing mechanism comprising two sets of film tearing components, the two sets of film tearing components being arranged vertically at intervals, the sheet to be printed passing through the two sets of film tearing components, each film tearing component comprising a slide and a lifting seat, the slide having a degree of freedom to move along the sheet conveying direction, the lifting seat being installed below the slide, the lifting seat having a degree of freedom to move along the height direction of the slide, a film winding roller being rotatably arranged on the lifting seat, the film winding rollers in the two sets of film tearing components respectively winding the protective film at the top and bottom of the sheet.

[0006] Furthermore, the film-tearing assembly also includes a fixed mounting plate, on which a T-shaped groove is formed along the conveying direction of the sheet material, and a T-shaped slider is fixed on the slide block, the T-shaped slider slidingly fitting into the T-shaped groove.

[0007] Furthermore, a locking screw is threaded through the slide block, the locking screw abuts against the mounting plate, and a locking wrench is fixed to the end of the locking screw away from the mounting plate.

[0008] Furthermore, a cylinder is vertically mounted on the slide block, the telescopic shaft of the cylinder is connected to the lifting seat, a motor is mounted on the lifting seat, and the output shaft of the motor is connected to the film winding roller.

[0009] Furthermore, the roller conveying mechanism includes an upper roller and a lower roller rotatably arranged, with a conveying space formed between the upper roller and the lower roller for the sheet material to pass through.

[0010] Furthermore, it also includes a pneumatic support roller, which is fixedly installed between the printing machine and the film-tearing mechanism. The top of the pneumatic support roller has several air holes along its own axial direction, and the air holes spray gas to keep the film-tearing sheet in a suspended state.

[0011] Furthermore, it also includes a guiding mechanism located between the roller conveying mechanism and the film-tearing mechanism. The guiding mechanism includes a fixed plate and guide shafts. Two guide shafts are provided on the fixed plate. The two guide shafts are spaced apart along the conveying direction of the sheet material, and the two guide shafts respectively contact both sides of the sheet material.

[0012] Furthermore, the top of the fixing plate has multiple threaded holes along its own length, the bottom thread of the guide shaft is adapted to fit into one of the threaded holes, and the top of the guide shaft is fixed with a limiting plate.

[0013] The beneficial effects of this utility model are:

[0014] 1. By wrapping the protective film on the top and bottom of the sheet material with the film-wrapping rollers in the two sets of film-tearing components respectively, non-contact film tearing is achieved, avoiding the friction on the surface of the sheet material caused by traditional contact film tearing, effectively preventing quality problems such as scratches and wrinkles on the sheet material, and greatly improving the yield of subsequent printing.

[0015] 2. The pneumatic support roller ensures that the sheet material is suspended in the air and transported into the printing press after the film is torn off, effectively avoiding electrostatic adsorption or secondary contamination caused by direct contact between the sheet material and the conveying components, thus ensuring high-quality printing. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a roll-to-roll non-contact direct printing device for tearing film. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of a roll-to-roll non-contact direct printing device for tearing film. Figure 2 ;

[0018] In the diagram, 1-slide block, 2-lifting block, 3-film winding roller, 4-mounting plate, 5-T-shaped slide groove, 6-locking screw, 7-locking wrench, 8-cylinder, 9-upper roller, 10-lower roller, 11-pneumatic support roller, 12-air hole, 13-fixed plate, 14-guide shaft, 15-limiting plate, 16-threaded hole. Detailed Implementation

[0019] Example 1

[0020] like Figure 1 and Figure 2 As shown, a roll-to-roll non-contact direct printing device for film tearing includes a roller conveyor mechanism and a film tearing mechanism. The film tearing mechanism is arranged between the roller conveyor mechanism and the printing press. The film tearing mechanism includes two sets of film tearing assemblies, which are arranged vertically at intervals. The sheet to be printed passes between the two sets of film tearing assemblies. Each film tearing assembly includes a slide 1 and a lifting seat 2. The slide 1 has a degree of freedom to move along the sheet conveying direction. The lifting seat 2 is installed below the slide 1 and has a degree of freedom to move along the height direction of the slide 1. A film winding roller 3 is rotatably mounted on the lifting seat 2. The film winding rollers 3 in the two sets of film tearing assemblies respectively wind the protective film on the top and bottom of the sheet. The protective film on the top of the roll is conveyed towards the printing press via a roller conveyor mechanism. The film-tearing mechanism is positioned between the roller conveyor mechanism and the printing press, allowing the film-torn roll to directly enter the printing press for direct printing. This avoids the film-torn roll coming into contact with other parts and causing contamination or damage. The specific film-tearing process is as follows: the protective film on the top surface of the roll is wound around the upper film-winding roller 3, and the protective film on the bottom surface of the roll is wound around the lower film-winding roller 3. Then, the continuous film-tearing action is completed by the rotation of the film-winding roller 3. This avoids the friction on the surface of the sheet material caused by traditional contact film-tearing, effectively preventing quality problems such as scratches and wrinkles on the sheet material, and greatly improving the yield rate of subsequent printing.

[0021] Example 2

[0022] Based on Embodiment 1, a pneumatic support roller 11 is also included. The pneumatic support roller 11 is fixedly installed between the printing machine and the film-tearing mechanism. The top of the pneumatic support roller 11 has several air holes 12 along its own axial direction. The air holes 12 spray gas to keep the film-tearing sheet suspended in the air. The roll passes over the pneumatic support roller 11. The pneumatic support roller 11 is connected to an air pump, so that the gas sprayed from the air holes 12 supports the roll without contact, ensuring that the roll is suspended in the air after film tearing and is transported into the printing machine, avoiding secondary contamination.

[0023] Example 3

[0024] Based on Embodiment 2, a guiding mechanism is also included. The guiding mechanism is located between the roller conveying mechanism and the film tearing mechanism. The guiding mechanism includes a fixed plate 13 and guide shafts 14. Two guide shafts 14 are provided on the fixed plate 13. The two guide shafts 14 are spaced apart along the conveying direction of the sheet material. The two guide shafts 14 respectively contact both sides of the sheet material. The two guide shafts 14 limit the roll of tape to avoid conveying deviation and ensure printing quality.

[0025] Furthermore, the top of the fixing plate 13 is provided with multiple threaded holes 16 along its own length direction. The bottom thread of the guide shaft 14 is threaded into one of the threaded holes 16. The top of the guide shaft 14 is fixed with a limiting plate 15. The guide shaft 14 is installed by means of threads, which can adjust the installation position of the guide shaft 14, thereby adjusting the distance between the two guide shafts 14 to adapt to different widths of tape.

[0026] Example 4

[0027] Based on Example 3, such as Figure 1 and Figure 2 As shown, the film-tearing assembly also includes a fixed mounting plate 4. A T-shaped groove 5 is provided on the mounting plate 4 along the conveying direction of the sheet material. A T-shaped slider is fixed on the slide block 1. The T-shaped slider slides and fits into the T-shaped groove 5. A locking screw 6 is threaded through the slide block 1. The locking screw 6 abuts against the mounting plate 4. A locking wrench 7 is fixed at the end of the locking screw 6 away from the mounting plate 4. The locking screw 6 can be easily rotated by the locking wrench 7. Loosening the locking screw 6 allows the slide block 1 to slide and adjust the position of the film-tearing assembly. After adjustment, tightening the locking screw 6 locks the position of the slide block 1.

[0028] Furthermore, a cylinder 8 is vertically mounted on the slide 1. The telescopic shaft of the cylinder 8 is connected to the lifting seat 2. A motor is mounted on the lifting seat 2. The output shaft of the motor is connected to the film winding roller 3. The extension and retraction of the cylinder 8 drives the lifting seat 2 to move up and down, which facilitates the adjustment of the position of the film winding roller 3, so that the film winding roller 3 can effectively wind the protective film to achieve the film tearing action.

[0029] Example 5

[0030] Based on Embodiment 4, the roller conveying mechanism includes an upper roller 9 and a lower roller 10 rotatably arranged, forming a conveying space between the upper roller 9 and the lower roller 10 for the sheet material to pass through. The upper roller 9 and the lower roller 10 are driven by a stepper motor, and the conveying of the tape is completed through the cooperation of the upper roller 9 and the lower roller 10.

Claims

1. A roll-to-roll non-contact direct printing device for tearing film, characterized in that, The system includes a roller conveyor mechanism and a film-tearing mechanism. The film-tearing mechanism is arranged between the roller conveyor mechanism and the printing press. The film-tearing mechanism includes two sets of film-tearing components, which are arranged vertically at intervals. The sheet to be printed passes through the two sets of film-tearing components. The film-tearing component includes a slide (1) and a lifting seat (2). The slide (1) has a degree of freedom to move along the sheet conveying direction. The lifting seat (2) is installed below the slide (1) and has a degree of freedom to move along the height direction of the slide (1). A film-winding roller (3) is rotatably arranged on the lifting seat (2). The film-winding roller (3) in the two sets of film-tearing components respectively winds the protective film at the top and the protective film at the bottom of the sheet.

2. The roll-to-roll non-contact direct printing device for tearing film as described in claim 1, characterized in that, The film-tearing assembly also includes a fixed mounting plate (4), on which a T-shaped groove (5) is provided along the conveying direction of the sheet material, and a T-shaped slider is fixed on the slide block (1), which slides and adapts to the T-shaped groove (5).

3. The roll-to-roll non-contact direct printing device for tearing film according to claim 2, characterized in that, A locking screw (6) is threaded through the slide (1), the locking screw (6) abuts against the mounting plate (4), and a locking wrench (7) is fixed at the end of the locking screw (6) away from the mounting plate (4).

4. The roll-to-roll non-contact direct printing device for tearing film as described in claim 1, characterized in that, A cylinder (8) is vertically mounted on the slide (1). The telescopic shaft of the cylinder (8) is connected to the lifting seat (2). A motor is mounted on the lifting seat (2). The output shaft of the motor is connected to the winding roller (3).

5. The roll-to-roll non-contact direct printing device for tearing film according to claim 1, characterized in that, The roller conveying mechanism includes an upper roller (9) and a lower roller (10) rotatably arranged, and a conveying space for sheet material to pass through is formed between the upper roller (9) and the lower roller (10).

6. The roll-to-roll non-contact direct printing device for tearing film according to claim 1, characterized in that, It also includes a pneumatic support roller (11), which is fixedly installed between the printing machine and the film-tearing mechanism. The top of the pneumatic support roller (11) has several air holes (12) along its own axial direction. The air holes (12) spray gas to keep the film-tearing sheet suspended.

7. The roll-to-roll non-contact direct printing device for tearing film according to claim 1, characterized in that, It also includes a guiding mechanism, which is located between the roller conveying mechanism and the film tearing mechanism. The guiding mechanism includes a fixed plate (13) and a guide shaft (14). Two guide shafts (14) are provided on the fixed plate (13). The two guide shafts (14) are spaced apart along the conveying direction of the sheet material. The two guide shafts (14) respectively contact the two sides of the sheet material.

8. The roll-to-roll non-contact direct printing device for tearing film according to claim 7, characterized in that, The top of the fixing plate (13) has multiple threaded holes (16) along its length direction. The bottom thread of the guide shaft (14) is adapted to fit into one of the threaded holes (16). The top of the guide shaft (14) is fixed with a limiting plate (15).

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