Anti-deviation intermittent film printing machine feeding mechanism

Abstract

The invention relates to the technical field of printing machines, in particular to an anti-deviation intermittent film printing machine feeding mechanism which comprises a rack. An air expansion shaft and a paper shortage electric eye are installed at the upper left corner of the front end of the machine frame, a buckle and a clamp used for fixing the air expansion shaft are installed at the front end of the machine frame, a first rotating shaft is fixedly connected to the lower side of the front end of the machine frame, and a feeding arm is rotationally connected to the outer side of the first rotating shaft. The front end of the rack is rotationally connected with a receiving and feeding paper pressing roller, the right side of the front end of the rack is sequentially provided with a first synchronous wheel, a floating roller, a second synchronous wheel and a roller device from bottom to top, and two sets of low-friction tension automatic tensioning devices are installed on the side, close to the first synchronous wheel, of the front end of the rack; the thin paper feeding device has universality and high performance, the common problems of deformation, deviation and the like in the thin paper printing process can be effectively solved, friction and tension are reduced, feeding is more stable, the problems of paper damage and deviation are effectively solved, and a mechanical arm is used for feeding and discharging.

Description

Technical Field

[0001] The invention relates to the technical field of printing machines, in particular to an anti-deviating intermittent film printing machine feeding mechanism. Background Art

[0002] The working principle of the feeding mechanism of the intermittent film printing machine mainly includes two aspects: intermittent motion and synchronous control. During the printing process, the feeding mechanism feeds the film into the printing area through intermittent motion, while the synchronous control ensures the coordinated work of each component during the printing process.

[0003] The feeding mechanism of an intermittent film printing machine usually includes the following parts: (1) Paper feeding part: The paper feeding part is an important part of the printing machine, mainly including the paper feeding table, paper feeding roller, paper feeding rack and paper correction mechanism; (2) Feeding unit: In a web-type gravure printing machine, the feeding unit is responsible for feeding the material strip into the printing unit at a certain speed and tension. The feeding unit usually includes a roll fixing mechanism, a roll holder, a roll lateral positioning device, a roll handover control device, etc. The roll fixing mechanism has two types: mandrel type and mandrel-free type, of which the mandrel type is more commonly used; the roll holder is generally a double-arm shaft turret structure, which is convenient for replacing the old and new rolls; (3) Paper feeding system: Paper feeding For a single-sheet printing press, the system mainly consists of a feed head (feeder), a feed board and a feed roller. The feed head is responsible for separating and conveying the paper from the paper feed table; the feed board and the feed roller ensure the positioning and acceleration of the paper during the conveying process; (4) Transmission system: The transmission system is one of the core parts of the printing press, usually consisting of a prime mover (such as an electric motor), a transmission system and an actuator. However, the existing feeding mechanism is generally only applicable to certain types of printing presses, is not very versatile, and requires manpower for loading and unloading. The workload of the workers is large, and during the conveying process, the tension is unstable, especially for thin paper, which is prone to deformation and easy to deviate.

[0004] Therefore, in order to solve the above-mentioned problem that the paper is easily deflected and deformed during feeding, an anti-deviating intermittent film printing machine feeding mechanism can be designed. Summary of the invention

[0005] In order to overcome the problem that paper is easily deflected and deformed during feeding.

[0006] The technical scheme of the present invention is: an anti-deviation intermittent film printing machine feeding mechanism includes a frame; also includes a loading and unloading lifting control device and a wheel device, an air shaft and a paper shortage electric eye are installed at the upper left corner of the front end of the frame, a buckle and a clamp for fixing the air shaft are installed at the front end of the frame, a first rotating shaft is fixedly connected to the lower side of the front end of the frame, a loading arm is rotatably connected to the outer side of the first rotating shaft, a feeding and receiving paper pressing roller is rotatably connected to the front end of the frame, a first synchronous wheel, a floating roller, a second synchronous wheel and a wheel device are sequentially arranged on the right side of the front end of the frame from bottom to top, and two sets of low-friction tension automatic tensioning devices are installed on the side of the front end of the frame close to the first synchronous wheel;

[0007] The low-friction tension automatic tensioning device includes a first connecting rod, a second rotating shaft, a low-friction cylinder, a second connecting rod and a paper feeding roller. The first connecting rod and the second connecting rod are rotatably connected on the outer side of the second rotating shaft. The paper feeding roller is installed on the end of the second connecting rod away from the second rotating shaft. The low-friction cylinder is fixed on the wall and is connected to the first connecting rod through a fisheye joint bearing.

[0008] Preferably, thin paper is placed in front of the device, and after the air shaft passes through the thin paper, the loading and unloading lifting control device is pulled, the loading arm rotates around the first rotating shaft and is pulled to the illustrated position, and the air shaft is fixed with a clamp and a buckle. When the roll of thin paper is about to run out, the paper shortage electric eye sends a signal to the control center of the printing press to stop feeding the paper, and the feeding and receiving pressing roller uses an adjusting cylinder to control the pressure to press the roll of paper, so that the paper tension of the thin paper is stable to avoid uneven paper collection during winding, and the thin paper is guided into a low-friction tension automatic tensioning device. The low-friction cylinder is fixed to the wall and connected to the first connecting rod with a fisheye joint bearing. As the low-friction cylinder reciprocates, it drives the first connecting rod and the second connecting rod to swing to compensate for the tension of the thin paper, and the thin paper is sent out. The first synchronous wheel and the second synchronous wheel are driven to rotate by the servo motor, so that the floating roller floats up and down with the rotation of the first synchronous wheel and the second synchronous wheel, thereby performing secondary tension compensation for the thin paper, and finally the thin paper is sent out by the wheel device.

[0009] Preferably, a telescopic cylinder is rotatably connected to the front end of the frame, and the telescopic end of the telescopic cylinder is fixedly connected to the loading arm through a rotating member.

[0010] Preferably, an ultrasonic electric eye for monitoring the diameter of the coil is installed on the frame near the receiving and feeding paper pressing roller.

[0011] Preferably, a deviation correction device, a simple dust removal device and a corona device are arranged on the upper side of the front end of the frame from left to right in sequence.

[0012] Preferably, a first paper guide roller and a second paper guide roller corresponding to the low-friction tension automatic tensioning device are provided at the front end of the frame.

[0013] Preferably, an adjusting cylinder for adjusting the position of the feeding and receiving paper pressing roller is also installed on the frame, and a feeding motor is also installed on the frame, and the feeding motor is connected to the air shaft through gear meshing.

[0014] Preferably, the second synchronous wheel is connected to the tensioning motor via a coupling, the second synchronous wheel is connected to the first synchronous wheel via a belt, and the belt fixing seat on the belt is connected to the floating roller.

[0015] Preferably, sliders are installed at both ends of the floating roller, the slide rails are fixed on the wall panels, buffer pads are arranged at both ends of the slide rails, and a sensor for monitoring the position of the floating roller is also arranged next to the floating roller.

[0016] The beneficial effects of the present invention are as follows: it has both versatility and high performance, can effectively solve the common deformation, deviation and other problems in the thin paper printing process, is improved from the existing printing feeding mechanism, can convey 1m roll of thin paper with a thickness of about 20 threads, the whole machine adopts servo motors, is more precise and stable than traditional machinery, can meet most of the printing needs of the market, has stronger versatility, reduces friction and tension, realizes smoother feeding, and effectively solves the problems of paper damage and deviation. Robot arms are used for loading and unloading, which reduces manpower and improves work efficiency. A low-friction tension automatic tensioning device is used to make the tension more stable, ensure the stability of paper tension, and effectively reduce deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Shown is a schematic diagram of a thin paper feeding route of a feeding mechanism of an anti-deviation intermittent film printing machine of the present invention;

[0018] Figure 2 Shown is a schematic diagram of the working trajectory of the loading arm and the low-friction tension automatic tensioning device in the anti-deviating intermittent film printing machine feeding mechanism of the present invention.

[0019] Explanation of the reference numerals in the accompanying drawings: 1. Loading and unloading lifting control device; 2. Buckle; 3. Clamp; 4. Inflatable shaft; 5. Paper shortage electric eye; 6. Telescopic cylinder; 7. Loading arm; 8. First rotating shaft; 9. Ultrasonic electric eye; 10. Paper receiving and feeding pressing roller; 11. Correction device; 12. Simple dust removal device; 13. Corona device; 14. First connecting rod; 15. Second rotating shaft; 16. Low friction cylinder; 17. Second connecting rod; 18. Paper feeding roller; 19. First paper guide roller; 20. Second paper guide roller; 21. First synchronous wheel; 22. Floating roller; 23. Second synchronous wheel; 24. Wheel device; 25. Frame. DETAILED DESCRIPTION

[0020] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0021] See also Figure 1-Figure 2The present invention provides an embodiment: an anti-deviation intermittent film printing machine feeding mechanism, including a frame 25; also including a loading and unloading lifting control device 1 and a wheel device 24, an air shaft 4 and a paper shortage electric eye 5 are installed at the upper left corner of the front end of the frame 25, when the roll of thin paper is about to run out, the paper shortage electric eye 5 sends a signal to the control center of the printing machine, so that the feeding motor stops running and stops feeding paper, a buckle 2 and a clamp 3 for fixing the air shaft 4 are installed at the front end of the frame 25, a first rotating shaft 8 is fixedly connected to the lower side of the front end of the frame 25, a feeding arm 7 is rotatably connected to the outer side of the first rotating shaft 8, a feeding and receiving paper pressing roller 10 is rotatably connected to the front end of the frame 25, a first synchronous wheel 21, a floating roller 22, a second synchronous wheel 23 and a wheel device 24 are sequentially arranged on the right side of the front end of the frame 25 from bottom to top, and two sets of low-friction tension automatic tensioning devices are installed on the side of the front end of the frame 25 close to the first synchronous wheel 21;

[0022] The low-friction tension automatic tensioning device includes a first connecting rod 14, a second rotating shaft 15, a low-friction cylinder 16, a second connecting rod 17 and a paper feeding roller 18. The first connecting rod 14 and the second connecting rod 17 are rotatably connected on the outer side of the second rotating shaft 15. The paper feeding roller 18 is installed on the end of the second connecting rod 17 away from the second rotating shaft 15. The low-friction cylinder 16 is fixed on the wall and is connected to the first connecting rod 14 through a fisheye joint bearing.

[0023] In this embodiment, the front end of the frame 25 is rotatably connected to a telescopic cylinder 6, and the telescopic end of the telescopic cylinder 6 is fixedly connected to the loading arm 7 through a rotating member. An ultrasonic electric eye 9 for monitoring the diameter of the roll is installed on the frame 25 near the receiving and feeding press roller 10. The ultrasonic electric eye 9 monitors the thickness of the roll of thin paper and sends a signal to the control center of the printing press to adjust the running speed of the feeding motor at any time to control the speed of paper feeding. The upper side of the front end of the frame 25 is provided with a correction device 11, a simple dust removal device 12 and a corona device 13 from left to right in sequence. The front end of the frame 25 is provided with a first paper guide roller 19 and a second paper guide roller 20 corresponding to the low friction tension automatic tensioning device. The frame 25 is also provided with an adjusting cylinder for adjusting the position of the receiving and feeding press roller 10. The receiving and feeding press roller 10 presses the roll of paper to make the thin paper force In order to smoothly avoid uneven material rewinding during rewinding, a feeding motor is also installed on the frame 25, and the feeding motor is connected to the air shaft 4 through gear meshing, and the second synchronous wheel 23 is connected to the tensioning motor through a coupling, and the second synchronous wheel 23 is connected to the first synchronous wheel 21 through a belt, and the belt fixing seat on the belt is connected to the floating roller 22, and sliders are installed at both ends of the floating roller 22, and the slide rails are fixed on the wall panels. There are buffer pads at both ends of the slide rails to prevent the floating roller 22 from escaping from the slide rails. A sensor for monitoring the position of the floating roller 22 is also arranged next to the floating roller 22. When the floating roller 22 rises (or falls) too high (or too low), the sensor sends a signal to the control center of the printing press, and adjusts the speed of the feeding motor to control the speed of paper feeding, so that the feeding of paper is always in a constant tension state, ensuring that the paper feeding will not deviate.

[0024] When working, the thin paper is placed in front of the device, and after the air shaft 4 passes through the thin paper, the loading and unloading lifting control device 1 is pulled, and the telescopic cylinder 6 is compressed to drive the loading arm 7 to rotate around the first rotating shaft 8 to the position shown in the figure. The feeding motor and the air shaft 4 are connected by gear meshing, and the air shaft 4 is fixed by the clamp 3 and the buckle 2. When the roll of thin paper is about to run out, the paper shortage electric eye 5 sends a signal to the control center of the printing press to stop the feeding motor from running and stopping the paper feeding. The ultrasonic electric eye 9 monitors the thickness of the roll of thin paper and sends a signal to the control center of the printing press to adjust the running speed of the feeding motor at any time to control the speed of paper feeding. The feeding and receiving pressing roller 10 uses the regulating cylinder to control the pressure to press the roll of paper, so that the paper tension of the thin paper is stable to avoid uneven paper collection during winding. The correction device 11, the simple dust removal device 12, and the corona device 13 correct the deviation, remove dust and corona treatment of the thin paper;

[0025] The first paper guide roller 19 guides the thin paper into the low-friction tension automatic tensioning device, and the second paper guide roller 20 sends the thin paper out. The low-friction cylinder 16 is fixed on the wall and connected to the first connecting rod 14 with a fisheye joint bearing. The first connecting rod 14 and the second connecting rod 17 are fixed on the second rotating shaft 15. The second connecting rod 17 is equipped with a paper passing roller 18. As the low-friction cylinder 16 reciprocates, it drives the first connecting rod 14 and the second connecting rod 17 to swing to compensate for the tension of the thin paper. The tensioning motor is connected to the second synchronous wheel 23 through a coupling. The second synchronous wheel 23 is connected to the first synchronous wheel 21 below through a belt. The belt fixing seat on the belt is connected to the floating roller 22. Both ends of the floating roller 22 A slider is installed, and the slide rail is fixed on the wall panel. There are buffer pads at both ends of the slide rail to prevent the floating roller 22 from escaping from the slide rail. The first synchronous wheel 21 and the second synchronous wheel 23 are driven to rotate by the servo motor, so that the floating roller 22 floats up and down following the rotation of the first synchronous wheel 21 and the second synchronous wheel 23, thereby performing secondary tension compensation of thin paper. When the floating roller 22 rises (or falls) too high (or too low), the sensor next to the floating roller 22 sends a signal to the control center of the printing press, and the speed of the feeding motor is adjusted to control the speed of paper feeding, so that the feeding of paper is always in a constant tension state, ensuring that the paper feeding will not deviate, and finally the thin paper is fed out by the wheel device 24.

[0026] Through the above steps, both versatility and high performance can be achieved, and deformation, deviation and other problems common in the thin paper printing process can be effectively solved. Paper damage and deviation problems are effectively solved. Robot arms are used for loading and unloading to reduce manpower. Low-friction tension automatic tensioning devices are used to make the tension more stable, ensuring the stability of paper tension and effectively reducing deformation to solve the problem of easy deviation and deformation of paper during feeding.

[0027] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the spirit of the present invention.

Claims

1. An anti-deviating intermittent film printing machine feeding mechanism, comprising a frame (25); characterized in that: The machine also comprises a material loading and unloading lifting control device (1) and a wheel device (24); an air shaft (4) and a paper shortage electric eye (5) are installed at the upper left corner of the front end of the frame (25); a buckle (2) and a clamp (3) for fixing the air shaft (4) are installed at the front end of the frame (25); a first rotating shaft (8) is fixedly connected to the lower side of the front end of the frame (25); a material loading arm (7) is rotatably connected to the outer side of the first rotating shaft (8); a receiving and feeding paper pressing roller (10) is rotatably connected to the front end of the frame (25); a first synchronous wheel (21), a floating roller (22), a second synchronous wheel (23) and a wheel device (24) are sequentially arranged on the right side of the front end of the frame (25) from bottom to top; and two sets of low-friction tension automatic tensioning devices are installed on the side of the front end of the frame (25) close to the first synchronous wheel (21); The low-friction tension automatic tensioning device comprises a first connecting rod (14), a second rotating shaft (15), a low-friction cylinder (16), a second connecting rod (17) and a paper feeding roller (18); the first connecting rod (14) and the second connecting rod (17) are rotatably connected on the outer side of the second rotating shaft (15); the paper feeding roller (18) is installed on one end of the second connecting rod (17) away from the second rotating shaft (15); the low-friction cylinder (16) is fixed on a wall; and the low-friction cylinder (16) is connected to the first connecting rod (14) through a fisheye joint bearing.

2. The anti-deviation intermittent film printing machine feeding mechanism according to claim 1, characterized in that: The front end of the frame (25) is rotatably connected to a telescopic cylinder (6), and the telescopic end of the telescopic cylinder (6) is fixedly connected to a loading arm (7) via a rotating member.

3. The anti-deviation intermittent film printing machine feeding mechanism according to claim 1, characterized in that: An ultrasonic electric eye (9) for monitoring the diameter of the coiled material is installed on the frame (25) near the paper feeding and receiving press roller (10).

4. The anti-deviation intermittent film printing machine feeding mechanism according to claim 1, characterized in that: A deviation correction device (11), a simple dust removal device (12) and a corona device (13) are sequentially arranged on the upper side of the front end of the frame (25) from left to right.

5. The anti-deviation intermittent film printing machine feeding mechanism according to claim 1, characterized in that: The front end of the frame (25) is provided with a first paper guide roller (19) and a second paper guide roller (20) which correspond one to one with the low friction tension automatic tensioning device.

6. The anti-deviation intermittent film printing machine feeding mechanism according to claim 1, characterized in that: The frame (25) is also provided with an adjusting cylinder for adjusting the position of the receiving and feeding paper pressing roller (10). The frame (25) is also provided with a feeding motor, and the feeding motor is connected to the air shaft (4) through gear meshing.

7. The anti-deviation intermittent film printing machine feeding mechanism according to claim 1, characterized in that: The second synchronous wheel (23) is connected to the tensioning motor through a coupling, and the second synchronous wheel (23) is connected to the first synchronous wheel (21) through a belt, and the belt fixing seat on the belt is connected to the floating roller (22).

8. The anti-deviation intermittent film printing machine feeding mechanism according to claim 1, characterized in that: Slide blocks are arranged at both ends of the floating roller (22), the slide rails are fixed on the wall panels, buffer pads are arranged at both ends of the slide rails, and a sensor for monitoring the position of the floating roller (22) is arranged beside the floating roller (22).

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