Thin film cutting device of photogravure press
Through the tension adjustment device and arc cutter design, the problem of wrinkles and offsets in the cutting process of the film cutting machine is solved, and efficient and accurate film cutting is achieved, suitable for wide-width materials.
Patent Information
- Application Number
- CN202422375790.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-09-29
AI Technical Summary
Existing film cutting machines are prone to wrinkles or skews during the cutting process, resulting in a deviation in cutting position and it is difficult to meet the complete cutting needs of large film materials.
The tension adjustment device and arc-shaped cutter design are adopted to adjust the film tension through the tension roller, and the driven press roller is used to prevent wrinkles and offsets, and the initial contact surface is reduced through the arc-shaped cutter, which realizes reciprocating cutting, and cooperates with the cylinder drive support to prevent the film from being stuck after cutting.
Effectively prevents wrinkles and offsets in the film during cutting. It is suitable for wider film materials, improves cutting efficiency, reduces material damage during cutting, and ensures cutting accuracy.
Smart Images
Figure CN223073604U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of film cutting, in particular to a film cutting device for a gravure printing press. Background Art
[0002] A gravure printing press can be used for printing materials such as paper, aluminum foil, plastic, and film. Among them, film materials usually need to be cut to meet the usage requirements during cutting. Traditional cutting machines usually simply cut through blades. Although they are convenient to use, there are some problems. When the existing cutting machines are working, the film may wrinkle or skew during transportation, resulting in deviation of the subsequent cutting position, and the film material cannot meet the production requirements. Moreover, it is difficult to cut large-sized film materials completely. Content of the Utility Model
[0003] In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a film cutting device for a gravure printing press.
[0004] The technical solution adopted by the utility model to solve its technical problems is as follows: Figures 1-3 As shown in the figure, a film cutting device for a gravure printing press includes a conveying device, which is composed of two conveyor belts. A tension adjusting device is fixedly connected to one side of the conveying device. A cutting device is arranged between the conveyor belts. The cutting device includes a cutting bracket. A plurality of first cylinders are fixedly connected to the inner top of the cutting bracket. The movable end of the first cylinder is drivingly connected to a support frame. One end of the support frame extends out of the cutting bracket and is fixedly connected to a motor support frame. A motor is fixedly connected to the motor support frame. A groove horizontally penetrating the support frame is opened in the middle below the support frame. A reciprocating lead screw is arranged in the groove. One end of the reciprocating lead screw is fixedly connected to the movable end of the motor. A cutter moving frame is sleeved outside the reciprocating lead screw. The shape of the cutter moving frame fits the shape of the groove. A cutter is fixedly connected below the cutter moving frame. A plurality of guide rods perpendicular to the support frame are arranged on both sides of the support frame inside the cutting bracket, and the guide rods all penetrate the support frame.
[0005] Preferably, the tension adjusting device includes a T-shaped bracket. A long circular hole is opened in the T-shaped bracket. A tension roller is slidably connected in the long circular hole. A locking wheel cooperating with the tension roller is arranged outside the long circular hole. The tension of the film material can be adjusted by moving the tension roller by loosening the locking wheel, and the height of the tension roller can be fixed by tightening the locking wheel.
[0006] Preferably, guide rollers are fixedly connected between the tension roller and the conveyor belt and on the T-shaped bracket. The top surface of the guide rollers is at the same height as the top surface of the conveyor belt.
[0007] Preferably, a driven pinch roller is provided above the conveyor belt. When the film material is transported forward, the driven pinch roller applies pressure to the film material to prevent the film material from wrinkling or shifting.
[0008] Preferably, adjustment brackets are provided on both sides of the driven pinch roller. A number of oblong holes are formed in the adjustment brackets. Both ends of the driven pinch roller extend out of the oblong holes, and locking sleeves are fixedly connected to both ends of the driven pinch roller by threads, so that the height of the driven pinch roller can be adjusted according to the thickness of the film material.
[0009] Preferably, arc-shaped cutting edges are provided on both sides of the cutting knife. When a traditional straight blade approaches the film material and is about to cut, the blade will be in overall contact with the side edge of the film material, and the film material may be driven by the blade to wrinkle during cutting. When the arc-shaped cutting edge approaches the film material and is about to cut, the cutting edge will first contact the corner of the film material and make an opening in the film material, facilitating the subsequent overall cutting by the cutting knife.
[0010] Preferably, two symmetrically arranged support members are provided on one side adjacent to the conveyor belt. A groove matching the shape of the edge of the conveyor belt is formed on one side of the support member. A gap for the cutting knife to pass through is left between the support members. A support plate driven and connected by a second air cylinder is provided below the gap. When the cutting knife completes the cutting work, the second air cylinder will drive it to lift upward until the top surface of the support plate is flush with the top surface of the support member, preventing the film material from getting stuck in the gap during subsequent transportation.
[0011] The beneficial effects of the present utility model are as follows: The appropriate tension of the film material is maintained by the height of the tension roller. When transporting, the driven pinch roller prevents the film material from wrinkling or shifting. The cutting knife is a blade with openings on the side. Compared with the common blade that presses from above and below, it can be applied to wider film materials, with a wider application range. In addition, arc-shaped cutting edges are provided on both sides of the cutting knife. The initial contact surface with the film material during cutting is smaller, making it easier to make an opening in the film material, facilitating subsequent cutting and not easily causing the film material to wrinkle during cutting. Moreover, reciprocating cutting can be realized through the two-sided cutting edges, improving work efficiency. Additionally, when the cutting equipment finishes cutting and the film material needs to continue to be transported forward, the support member is lifted by the second air cylinder to prevent the edge of the film material from getting stuck in the gap during transportation. Description of the Drawings
[0012] The following further describes the present utility model in conjunction with the drawings and embodiments.
[0013] Figure 1 is the front view of the present utility model;
[0014] Figure 2 is Figure 1 the cross-sectional view in the A-A direction of
[0015] Figure 3 Yes Figure 1 It is the top view in the B-B direction in the figure;
[0016] In the figure, 1. Conveyor belt; 2. Tension adjusting device; 3. Cutting equipment; 4. Cutting support; 5. First cylinder; 6. Support frame; 7. Groove; 8. Motor support frame; 9. Motor; 10. Reciprocating lead screw; 11. Cutter moving frame; 12. Guide rod; 13. Cutter; 14. Driven pressure roller; 15. T-shaped support; 16. Elongated circular hole; 17. Tension roller; 18. Locking wheel; 19. Guide roller; 20. Adjusting support; 21. Kidney-shaped circular hole; 22. Locking sleeve; 23. Support member; 24. Gap; 25. Second cylinder; 26. Support plate. Specific embodiments
[0017] All features disclosed in this specification, or all steps in the disclosed methods or processes, except for mutually exclusive features and / or steps, can be combined in any way.
[0018] Any feature disclosed in this specification (including any additional claims, abstract, and drawings), unless specifically stated, can be replaced by other equivalent or similar-purpose alternative features. That is, unless specifically stated, each feature is only an example of a series of equivalent or similar features.
[0019] As Figures 1-3 A film cutting device for a gravure printing press shown in the figure includes a conveying device, the conveying device is composed of two conveyor belts 1, a tension adjusting device 2 is fixedly connected to one side of the conveying device, a cutting device 3 is arranged between the conveyor belts 1, the cutting device 3 includes a cutting support 4, a plurality of first cylinders 5 are fixedly connected to the inner top of the cutting support 4, the movable end of the first cylinder 5 is drivingly connected to a support frame 6, one end of the support frame 6 extends out of the cutting support 4 and is fixedly connected to a motor support frame 8, a motor 9 is fixedly connected to the motor support frame 8, a groove 7 horizontally penetrating the support frame 6 is opened in the middle below the support frame 6, a reciprocating lead screw 10 is arranged in the groove 7, one end of the reciprocating lead screw 10 is fixedly connected to the movable end of the motor 9, a cutter moving frame 11 is sleeved outside the reciprocating lead screw 10, the shape of the cutter moving frame 11 fits the shape of the groove 7, a cutter 13 is fixedly connected below the cutter moving frame 11, and a plurality of guide rods 12 perpendicular to the support frame 6 are arranged on both sides of the support frame 6 inside the cutting support 4, and the guide rods 12 all penetrate the support frame 6.
[0020] The tension adjusting device 2 includes a T-shaped support 15, an elongated circular hole 16 is opened on the T-shaped support 15, a tension roller 17 is slidably connected in the elongated circular hole 16, a locking wheel 18 cooperating with the tension roller 17 is arranged outside the elongated circular hole 16, the tension of the film material can be adjusted by moving the tension roller 17 by loosening the locking wheel 18, and the height of the tension roller 17 is fixed by tightening the locking wheel 18.
[0021] A guiding roller 19 is fixedly connected to the T-shaped bracket 15 between the tension roller 17 and the conveyor belt 1, and the top surface of the guiding roller 19 is at the same height as the top surface of the conveyor belt 1.
[0022] A driven pressure roller 14 is provided above the conveyor belt 1. When the film material is transported forward, the driven pressure roller 14 will apply pressure to the film material to prevent the film material from wrinkling or shifting.
[0023] Adjusting brackets 20 are arranged on both sides of the driven pressure roller 14. A plurality of waist-shaped holes 21 are formed in the adjusting brackets 20. Both ends of the driven pressure roller 14 extend out of the waist-shaped holes 21, and locking sleeves 22 are fixedly connected to both ends of the driven pressure roller 14 by threads, and the height of the driven pressure roller 14 can be adjusted according to the thickness of the film material.
[0024] Arc-shaped cutting edges are formed on both sides of the cutting knife 13. When a traditional straight blade approaches the film material and is about to cut, the blade will be in overall contact with the side edge of the film material, and the film material may be driven by the blade to wrinkle during cutting. When the arc-shaped cutting edge approaches the film material and is about to cut, the cutting edge will first contact the corner of the film material and make an opening in the film material, which is convenient for the subsequent overall cutting of the cutting knife 13.
[0025] Two symmetrically arranged support members 23 are provided on one side adjacent to the conveyor belt 1. A groove matching the shape of the edge of the conveyor belt 1 is formed on one side of the support member 23. A gap 24 for the cutting knife 13 to pass through is left between the support members 23. A support plate 26 driven by a second air cylinder 25 is provided below the gap 24. When the cutting knife 13 finishes cutting, the second air cylinder 25 will drive 26 to lift upward until the top surface of the support plate 26 is flush with the top surface of the support member 23, preventing the film material from getting stuck in the gap 24 during subsequent transportation. Specific embodiments
[0026] The height of the tension roller 17 is adjusted to keep the film material under appropriate tension. During transportation, the driven pressure roller 14 is used to prevent the film material from wrinkling or shifting. When in the position where cutting is required, the conveyor belt 1 stops working, and the first air cylinder 5 drives the support frame 6 to press down onto the film material. At this time, the cutting knife 13 is located on the side edge of the film material. The motor 9 drives the reciprocating lead screw 10 to rotate, driving the cutting knife moving frame 11 and the cutting knife 13 to move to complete the cutting. After the cutting is completed, the first air cylinder 5 drives the support member 6 to rise, and the second air cylinder 25 lifts the support member 23 upward. The conveyor belt 1 continues to work. When the film material is at the next cutting position, the motor 9 drives the cutting knife 13 to move to the initial position to complete the next cutting, and then the cycle works.
[0027] This design is ingenious. By adjusting the height of the tension roller, the film material can be kept under appropriate tension. During transportation, the driven pressure roller is used to prevent the film material from wrinkling or shifting. The cutting knife is a blade with an opening on the side. Compared with the common blades that press from above and below, it can be applied to wider film materials, with a wider application range. In addition, arc-shaped cutting edges are provided on both sides of the cutting knife. When cutting, the initial contact surface with the film material is smaller, making it easier to make an opening on the film material, facilitating subsequent cutting and less likely to cause the film material to wrinkle during cutting. Moreover, reciprocating cutting can be achieved through the cutting edges on both sides, improving work efficiency. Additionally, when the film material needs to continue to be transported after the cutting equipment has completed cutting, the second cylinder is used to lift the support member to prevent the edge of the film material from getting stuck in the gap during transportation.
[0028] The present utility model is not limited to the foregoing specific embodiments. The present utility model extends to any new feature or any new combination disclosed in this specification, as well as any new combination of the steps of any new method or process disclosed.
Claims
1. An intaglio printing machine film cutting device, characterized in that: It includes a conveying device which is composed of two conveyor belts (1). A tension adjusting device (2) is fixedly connected to one side of the conveying device. A cutting device (3) is arranged between the conveyor belts (1). The cutting device (3) includes a cutting bracket (4). A plurality of first cylinders (5) are fixedly connected to the inner top of the cutting bracket (4). The movable end of the first cylinder (5) is drivingly connected to a support frame (6). One end of the support frame (6) extends out of the cutting bracket (4) and is fixedly connected to a motor support frame (8). A motor (9) is fixedly connected to the motor support frame (8). A groove (7) horizontally penetrating the support frame (6) is opened in the middle below the support frame (6). A reciprocating lead screw (10) is mounted in the groove (7). One end of the reciprocating lead screw (10) is fixedly connected to the movable end of the motor (9). A cutter moving frame (11) is sleeved outside the reciprocating lead screw (10). The shape of the cutter moving frame (11) fits the shape of the groove (7). A cutter (13) is fixedly connected below the cutter moving frame (11). A plurality of guide rods (12) perpendicular to the support frame (6) are arranged on both sides of the support frame (6) inside the cutting bracket (4), and the guide rods (12) all penetrate the support frame (6).
2. The film cutting device of a gravure printing press according to claim 1, wherein: The tension adjusting device (2) includes a T-shaped bracket (15). A long circular hole (16) is opened in the T-shaped bracket (15). A tension roller (17) is slidably connected in the long circular hole (16). A locking wheel (18) used in cooperation with the tension roller (17) is arranged outside the long circular hole (16).
3. The film cutting device of a gravure printing press according to claim 2, characterized in that: Guide rollers (19) are fixedly connected to the T-shaped bracket (15) between the tension roller (17) and the conveyor belt (1).
4. A film cutting device for a gravure printing press according to claim 1, characterized in that: A driven pressure roller (14) is arranged above the conveyor belt (1).
5. The film cutting device of a gravure printing press according to claim 1, characterized in that: Adjusting brackets (20) are arranged on both sides of the driven pressure roller (14). A plurality of waist-shaped circular holes (21) are opened in the adjusting brackets (20). Both ends of the driven pressure roller (14) extend out of the waist-shaped circular holes (21). Locking sleeves (22) are fixedly connected to both ends of the driven pressure roller (14) by threads.
6. The film cutting device of a gravure printing press according to claim 1, characterized in that: Arc-shaped cutting edges are opened on both sides of the cutter (13).
7. The film cutting device of an intaglio printing press according to claim 1, characterized in that: Two symmetrically arranged support members (23) are arranged on one adjacent side of the conveyor belt (1). A groove fitting the shape of the edge of the conveyor belt (1) is opened on one side of the support member (23). A gap (24) for the cutter (13) to pass through is left between the support members (23). A support plate (26) drivenly connected by a second cylinder (25) is arranged below the gap (24).