Digital printing film winding structure

Abstract

The invention relates to the technical field of film winding, in particular to a digital printing film winding structure which comprises a rack, an air swelling shaft and a swing frame, the air swelling shaft and the swing frame are arranged on the rack, and the swing frame is provided with a traction roller parallel to the air swelling shaft. The traction roller is pressed on a film roll on the air expansion shaft through the lower swing of the swing frame, the swing frame is provided with a first motor, the traction roller is connected with an output shaft of the first motor, the rack is provided with an air cylinder, the air cylinder is connected with the swing frame, and the air expansion shaft is connected with the air cylinder. According to the digital printing thin film winding structure, the problems that in the prior art, when a thin film roll is unloaded, the whole winding structure needs to be lifted manually, the process is tedious, meanwhile, manpower is consumed, and operation is inconvenient are solved.

Description

Technical Field

[0001] The invention relates to the technical field of film winding, in particular to a digital printing film winding structure. Background Art

[0002] In the common winding structure, the method of using motor drive to drive the air shaft to rotate can better meet the winding needs of general paper roll materials. However, when the paper roll material is replaced with film, this kind of winding structure will expose obvious limitations. Due to the thin thickness, low elastic modulus, and smooth surface of film materials, problems such as material deviation, wrinkling, and uneven winding are prone to occur during the winding process. These problems not only reduce production efficiency, but also directly affect the product qualification rate.

[0003] To solve the above problems, in the prior art, some winding structures will use the deadweight of structures such as traction rollers to press down the film wound on the air inflation shaft to avoid problems such as wrinkling of the film during the winding process. However, when unloading the film roll, manpower is often required to lift the entire winding structure. The process is relatively cumbersome, labor-intensive, and inconvenient to operate. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present application provides a digital printing film winding structure.

[0005] The digital printing film winding structure provided by the present invention adopts the following technical solution:

[0006] A digital printing film winding structure comprises a frame and an air inflation shaft and a swing frame arranged on the frame, the swing frame is provided with a traction roller parallel to the air inflation shaft, the traction roller is pressed against the film roll on the air inflation shaft by the swing of the swing frame, the swing frame is provided with a first motor, and the traction roller is connected to the output shaft of the first motor; the frame is provided with a cylinder, and the cylinder is connected to the swing frame.

[0007] Preferably, the cylinder includes a cylinder body and a telescopic rod, the cylinder body of the cylinder is hinged on the frame, one end of the telescopic rod of the cylinder is telescopically connected to the cylinder body, and the other end is hinged to the swing frame, and the cylinder and the air expansion shaft are respectively located on both sides of the swing frame.

[0008] Preferably, a compensating pressure spring is provided on the frame, and the compensating pressure spring is provided on the upward swing path of the swing frame, and the compensating pressure spring gradually contracts as the swing frame swings upward.

[0009] Preferably, the pressure-compensating spring is sleeved on the telescopic rod of the cylinder, one end of the pressure-compensating spring is connected to the telescopic rod and the other end is connected to the cylinder body.

[0010] Preferably, the frame is hingedly provided with a mounting plate, the cylinder is provided on the mounting plate, the mounting plate is provided with a driving assembly, the driving assembly is used to drive the cylinder to move on the mounting plate, and the movement direction of the cylinder is parallel to the extension and retraction direction of the telescopic rod.

[0011] Preferably, the driving assembly includes a slide rail, a slider, a screw and a second motor, the slide rail is arranged on the mounting plate, the slider is slidably connected to the slide rail, the cylinder is arranged on the slider, the screw is rotatably arranged on the mounting plate and is threadedly connected to the slider, and the output shaft of the second motor is coaxially connected to the screw.

[0012] Preferably, a limit rod is provided on the frame, the limit rod is parallel to the air expansion shaft, the limit rod is located on the downward swing path of the swing frame, and the limit rod is used to prevent the traction roller from hitting the air expansion shaft.

[0013] Preferably, the limiting rod sleeve is provided with a buffer pad.

[0014] The beneficial effects of the present invention are:

[0015] 1. When the film roll needs to be unloaded, the cylinder controls the telescopic rod to retract, and the telescopic rod drives the swing frame to automatically move away from the air expansion shaft, thereby making room for the film roll to be unloaded. This solves the problem in the prior art that when unloading the film roll, manpower is often required to lift the entire winding structure, which is a cumbersome process, labor-consuming, and inconvenient to operate;

[0016] 2. By setting the compensating spring, even if the traction roller and the swing frame gradually reduce their force on the film roll due to being lifted up, the gradually increasing resilience of the compensating spring will compensate for this part of the pressure, thereby ensuring that the film can have a good anti-wrinkling effect in the later stage of winding;

[0017] 3. When the rolled film needs to be unloaded, the cylinder is first operated to keep the telescopic rod at its length, and then the drive assembly is operated to pull the cylinder and the swing frame away from the air shaft to make enough space for the film to be unloaded. During this process, the compensating spring will stop being compressed because it will move synchronously with the cylinder. This can prevent the compensating spring from being damaged due to excessive compression, and make it easier to lift the swing frame during the unloading process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an overall schematic diagram of the winding structure in the first embodiment;

[0019] Figure 2 It is a partial enlarged view of the winding structure in Example 1;

[0020] Figure 3 is a partial enlarged view of the winding structure in the first embodiment from another viewing angle;

[0021] Figure 4 is a schematic diagram of the structure of the winding structure at the cylinder in the first embodiment;

[0022] Figure 5 is a schematic diagram of the structure of the winding structure at the cylinder in the second embodiment;

[0023] Figure 6 It is a structural schematic diagram of the winding structure at the cylinder in the third embodiment.

[0024] Explanation of the reference numerals in the accompanying drawings: 1. Frame; 11. Fixed frame; 12. Swinging frame; 2. Air expansion shaft; 31. First film guide roller; 32. Second film guide roller; 4. Traction roller; 41. First motor; 5. Cylinder; 6. Limit rod; 7. Compensating pressure spring; 8. Mounting plate; 91. Slide rail; 92. Slider; 93. Screw rod; 94. Second motor. DETAILED DESCRIPTION

[0025] The following will be combined Figure 1-Figure 6 The present invention is further illustrated by the following embodiments.

[0026] Embodiment 1

[0027] This embodiment discloses a digital printing film winding structure.

[0028] Reference Figures 1 to 3The digital printing film winding structure includes a frame 1, on which an air expansion shaft 2 is rotatably provided, and the rotation axis of the air expansion shaft 2 is a horizontal axis. A fixed frame 11 is provided on the frame 1, and the fixed frame 11 is located in front of the air expansion shaft 2. A plurality of first film guide rollers 31 are rotatably provided on the fixed frame 11, and the plurality of first film guide rollers 31 are all parallel to the air expansion shaft 2. A swing frame 12 is hinged on the fixed frame 11, and the swing frame 12 is also located in front of the air expansion shaft 2 and above the fixed frame 11. A plurality of second film guide rollers 32 are rotatably provided on the swing frame 12, and the plurality of second film guide rollers 32 are all parallel to the inflation shaft. The film passes through the plurality of first film guide rollers 31 and the plurality of second film guide rollers 32 in sequence and is then rolled up on the inflation shaft. A traction roller 4 is also rotatably arranged on the swing frame 12, and the traction roller 4 is also parallel to the air expansion shaft 2. The traction roller 4 is pressed against the film roll on the air expansion shaft 2 by the swing frame 12. Furthermore, the swing frame 12 is provided with a first motor 41, and the traction roller 4 is connected to the output shaft of the first motor 41 through a synchronous belt and a synchronous wheel. Since the traction roller 4 presses the film roll on the air expansion shaft 2, when the first motor 41 is started, the traction roller 4 serves as a driving wheel and the air expansion shaft 2 serves as a driven wheel to roll the film onto the air expansion shaft 2. As the thickness of the film increases, the film roll will gradually lift up the traction roller 4 and the swing frame 12. The continuous pressure of the traction roller 4 and the swing frame 12 can avoid problems such as wrinkling of the film during the winding process, thereby improving product quality.

[0029] Reference Figures 1 to 4 The frame 1 is provided with a cylinder 5, which includes a cylinder body and a telescopic rod. The cylinder body of the cylinder 5 is hinged on the frame 1, one end of the telescopic rod of the cylinder 5 is telescopically connected to the cylinder body, and the other end is hinged to the swing frame 12. The cylinder 5 and the air expansion shaft 2 are respectively located on both sides of the swing frame 12. When the film roll needs to be unloaded, the cylinder 5 controls the telescopic rod to retract, and the telescopic rod drives the swing frame 12 to automatically move away from the air expansion shaft 2, thereby making room for the film roll to be unloaded, thereby solving the problem in the prior art that manpower is often required to lift the entire winding structure when unloading the film roll, the process is relatively cumbersome, and it consumes manpower and is inconvenient to operate.

[0030] Reference Figure 2 A limit rod 6 is provided on the fixed frame 11, the limit rod 6 is parallel to the air shaft 2, and the limit rod 6 is located on the swing path of the swing frame 12. The limit rod 6 is used to limit the maximum swing angle of the swing frame 12 to prevent the traction roller 4 from hitting the air shaft 2 due to a failure of the cylinder 5. Further, the limit rod 6 is sleeved with a buffer pad, which can reduce the problem of excessive noise and excessive damage caused by the hard contact between the swing frame 12 and the limit rod 6.

[0031] Embodiment 2

[0032] This embodiment also discloses a digital printing film winding structure.

[0033] Reference Figure 5 In the present invention, the wrinkle-proof effect of the film roll is achieved based on the pressure brought by the deadweight of the traction roller 4 and the swing frame 12. As the thickness of the film roll increases, the traction roller 4 and the swing frame 12 will be gradually lifted up and swung upward, resulting in a decrease in the pressure exerted by the traction roller 4 and the swing frame 12 on the film roll, which reduces the wrinkle-proof effect of the film in the later stage of winding. To this end, in this embodiment, a compensating spring 7 is further provided on the frame 1. The compensating spring 7 is provided on the upward swing path of the swing frame 12. The compensating spring 7 gradually contracts as the swing frame 12 swings upward. By providing the compensating spring 7, even if the traction roller 4 and the swing frame 12 gradually reduce their force on the film roll due to being lifted up, the gradually increasing resilience of the compensating spring 7 will compensate for this part of the pressure, thereby ensuring that the film can also have a good wrinkle-proof effect in the later stage of winding.

[0034] Reference Figure 5 In the present embodiment, the compensating pressure spring 7 is sleeved on the telescopic rod of the cylinder 5. Specifically, one end of the compensating pressure spring 7 is connected to the telescopic rod and the other end is connected to the cylinder body. When the traction roller 4 and the swing frame 12 are lifted up and swung upward, the swing frame 12 will push the telescopic rod to retract, thereby compressing the compensating pressure spring 7 between the telescopic rod and the cylinder body, so that the rebound force of the compensating pressure spring 7 increases and acts on the film roll, compensating for the pressure on the film roll that is reduced due to the upward swing of the traction roller 4 and the swing frame 12.

[0035] Embodiment 3

[0036] This embodiment also discloses a digital printing film winding structure.

[0037] Reference Figure 6 , which is different from the second embodiment, is that: the frame 1 is hingedly provided with a mounting plate 8, and the cylinder 5 is provided on the mounting plate 8, so that the cylinder 5 is hinged on the frame 1 through the mounting plate 8. Furthermore, the mounting plate 8 is provided with a driving assembly, and the driving assembly is used to drive the cylinder 5 to move on the mounting plate 8, and the movement direction is parallel to the extension direction of the telescopic rod of the cylinder 5. The purpose of setting the driving assembly is that when it is necessary to unload the wound film, the cylinder 5 is first operated to keep the length of the telescopic rod, and then the driving assembly is operated and pulls the cylinder 5 and the swing frame 12 away from the air shaft 2 to free up enough space for the film to be unloaded. In this process, since the compensating spring 7 will move synchronously with the cylinder 5, the compensating spring 7 will stop further compression, which, on the one hand, avoids the compensating spring 7 from being damaged due to excessive compression, and on the other hand, makes it easier to lift the swing frame 12 during the unloading process.

[0038] Reference Figure 6Specifically, the driving assembly includes a slide rail 91, a slider 92, a screw rod 93 and a second motor 94, wherein the slide rail 91 is arranged on the mounting plate 8, the slider 92 is slidably connected to the slide rail 91, the cylinder 5 is arranged on the slider 92 and slides through the slider 92, the screw rod 93 is rotatably arranged on the mounting plate 8 and is threadedly connected to the slider 92, and the output shaft of the second motor 94 is coaxially connected to the screw rod 93. When the second motor 94 is started, it will drive the screw rod 93 to rotate, and the screw rod 93 will then drive the slider 92 and the cylinder 5 on the slider 92 to slide, so as to control the swing frame 12 to swing upward during unloading.

[0039] The above are all preferred embodiments of the present invention, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A digital printing film winding structure, characterized in that: The invention comprises a frame (1), an air-expanding shaft (2) and an oscillating frame (12) arranged on the frame (1); the oscillating frame (12) is provided with a traction roller (4) parallel to the air-expanding shaft (2); the traction roller (4) is pressed against a film roll on the air-expanding shaft (2) by the downward swing of the oscillating frame (12); the oscillating frame (12) is provided with a first motor (41); the traction roller (4) is connected to the output shaft of the first motor (41); the frame (1) is provided with a cylinder (5), and the cylinder (5) is connected to the oscillating frame (12).

2. The digital printing film winding structure according to claim 1, characterized in that: The cylinder (5) comprises a cylinder body and a telescopic rod. The cylinder body of the cylinder (5) is hinged on the frame (1). One end of the telescopic rod of the cylinder (5) is telescopically connected to the cylinder body, and the other end is hinged to the swing frame (12). The cylinder (5) and the air expansion shaft (2) are respectively located on both sides of the swing frame (12).

3. The digital printing film winding structure according to claim 2, characterized in that: A compensating pressure spring (7) is arranged on the frame (1), and the compensating pressure spring (7) is arranged on the upward swing path of the swing frame (12). The compensating pressure spring (7) gradually contracts as the swing frame (12) swings upward.

4. The digital printing film winding structure according to claim 3, characterized in that: The pressure-compensating spring (7) is sleeved on the telescopic rod of the cylinder (5); one end of the pressure-compensating spring (7) is connected to the telescopic rod and the other end is connected to the cylinder body.

5. The digital printing film winding structure according to claim 4, characterized in that: The frame (1) is hingedly provided with a mounting plate (8), the cylinder (5) is arranged on the mounting plate (8), the mounting plate (8) is provided with a driving assembly, the driving assembly is used to drive the cylinder (5) to move on the mounting plate (8), and the movement direction of the cylinder (5) is parallel to the extension and retraction direction of the telescopic rod.

6. The digital printing film winding structure according to claim 5, characterized in that: The driving assembly comprises a slide rail (91), a slider (92), a screw rod (93) and a second motor (94); the slide rail (91) is arranged on the mounting plate (8); the slider (92) is slidably connected to the slide rail (91); the cylinder (5) is arranged on the slider (92); the screw rod (93) is rotatably arranged on the mounting plate (8) and is threadedly connected to the slider (92); and the output shaft of the second motor (94) is coaxially connected to the screw rod (93).

7. The digital printing film winding structure according to claim 1, characterized in that: A limit rod (6) is provided on the frame (1), the limit rod (6) is parallel to the air expansion shaft (2), the limit rod (6) is located on the downward swing path of the swing frame (12), and the limit rod (6) is used to prevent the traction roller (4) from colliding with the air expansion shaft (2).

8. The digital printing film winding structure according to claim 7, characterized in that: The limiting rod (6) is sleeved with a buffer pad.

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