Film winding device capable of preventing roll loosening

Abstract

The utility model discloses an anti-loose film winding device which comprises a base, a movable seat, a fixed column, a movable column, an auxiliary shaft, an air swelling shaft, a lifting device, a movable frame and a pressing roller, the movable seat is installed on the base in a sliding mode, and a driving mechanism for driving the movable seat to slide is installed on the base. A movable column and a driving motor are fixed to the base, one end of the air expansion shaft is rotationally installed on the movable column, a winding drum is installed on the air expansion shaft, the air expansion shaft and the driving motor are each provided with a belt wheel, the two belt wheels are connected through a belt, a fixed column is fixed to the base, and the fixed column is fixed to the base. The auxiliary shaft is rotationally installed on the fixing column, and the auxiliary shaft and the air swelling shaft are located on the same horizontal axis. According to the utility model, the movable frame, the compression roller and the spring are matched with one another, so that a film can be propped during rolling, the film has certain tightness, and the phenomenon of roll scattering is not easy to occur.

Description

Technical Field

[0001] The utility model relates to the technical field of film making, in particular to the technical field of film winding devices. Background Art

[0002] In the production process of thermal transfer film, PVC decorative film, coating film and other films, a winding device is used to wind the produced film onto a winding drum to facilitate the subsequent transportation and processing of the film. The film is prone to loose rolls during the film winding process.

[0003] The existing patent CN218809283U discloses a decorative film winding mechanism, which uses a plurality of rotating wheels to press against the wound decorative film so that the decorative film has a certain degree of tightness when winding and is not easy to loosen. However, due to the presence of multiple rotating wheels, the decorative film is subjected to uneven force at different locations, which is prone to indentations and depressions. At the same time, as the winding progresses, the pressure of the rotating wheels on the decorative film will gradually increase. If the pressure is too high, the decorative film will be easily crushed. Summary of the invention

[0004] The purpose of the utility model is to solve the problems in the prior art and to propose a film winding device that prevents the film from unwinding, which can keep the film at a certain tightness when winding, making it less likely to unwind, less likely to have indentations and depressions, and the film will not be damaged.

[0005] The cam is provided with a plurality of movable members, and the movable members are provided with a plurality of movable members, and the movable members are provided with a plurality of movable members. The fixed column end is provided with an embedding block that matches the embedding groove, and the embedding block is embedded in the embedding groove. A mounting frame is installed on the base, and a lifting device is installed on the mounting frame. The lifting device is connected to a mounting plate, and the lifting device drives the mounting plate to move vertically up and down. A movable frame is provided under the mounting plate, and a clamping roller is installed on the movable frame. The clamping roller is located directly above the winding drum, and the length of the clamping roller is greater than the length of the winding drum. A plurality of vertically arranged guide rods are installed on the movable frame, and a plurality of guide holes corresponding to the guide rods are provided on the mounting plate. The guide rods pass through the guide holes, and a spring is installed on the movable frame. The top end of the spring is connected to a pressure sensing device fixed to the bottom of the mounting plate, and the pressure sensing device and the lifting device are both connected to a control device.

[0006] Preferably, the driving mechanism consists of a servo motor and a screw rod. The servo motor is installed on a base. The servo motor is connected to a screw rod. The end of the screw rod is rotatably installed on a fixed column. The movable seat is provided with a thread hole matching the screw rod. The movable seat is screwed on the screw rod. The base is provided with a slide groove parallel to the screw rod. The bottom of the movable seat is provided with a slider matching the slide groove.

[0007] Preferably, a limiting ring is provided on the air-inflating shaft, and the limiting ring abuts against the end of the winding drum close to the movable column.

[0008] Preferably, the cross-sections of the embedding groove and the embedding block are both square.

[0009] Preferably, the pressure roller is hollow inside.

[0010] The beneficial effects of the utility model are as follows: the utility model cooperates with the movable frame, the pressure roller and the spring so that the film can be supported when being rolled up, so that the film has a certain tightness and is not easy to unwind; the control device cooperates with the lifting device and the pressure sensing device so that the pressure of the pressure roller on the film is always within a certain range, and the film is not easily crushed; the length of the pressure roller is greater than the length of the winding drum so that the pressure roller can press the film in the entire width direction, the film is evenly stressed, and is not easy to have indentations and depressions.

[0011] The features and advantages of the present invention will be described in detail through embodiments in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a front view of the film winding device for preventing unwinding of the utility model.

[0013] In the figure: 1-base, 2-movable seat, 3-air expansion shaft, 4-mounting frame, 5-winding drum, 10-fixed column, 11-auxiliary shaft, 12-embedded groove, 15-slide groove, 20-movable column, 21-drive motor, 22-pulley, 23-slider, 25-servo motor, 26-screw, 31-limiting ring, 32-embedded block, 40-lifting device, 41-mounting plate, 42-movable frame, 43-pressure roller, 44-guide rod, 45-spring, 46-pressure sensing device. DETAILED DESCRIPTION

[0014] See also Figure 1The utility model anti-loosening film winding device comprises a base 1, a movable seat 2, a fixed column 10, a movable column 20, an auxiliary shaft 11, an air expansion shaft 3, a lifting device 40, a movable frame 42, and a pressing roller 43. A movable seat 2 is slidably installed on the base 1, and a driving mechanism that drives the movable seat 2 to slide is installed on the base 1. A movable column 20 and a driving motor 21 are fixed on the base 1. One end of the air expansion shaft 3 is rotatably installed on the movable column 20. A winding drum 5 is installed on the air expansion shaft 3. A pulley 22 is installed on both the air expansion shaft 3 and the driving motor 21. The two pulleys 22 are connected by a belt. A fixed column 10 is fixed on the base 1, and the auxiliary shaft 11 is rotatably installed on the fixed column 10. The auxiliary shaft 11 and the air expansion shaft 3 are located on the same horizontal axis. An embedding groove 12 is provided on the side of the auxiliary shaft 11 close to the movable column 20, and a An embedding block 32 that matches the embedding groove 12, the embedding block 32 is embedded in the embedding groove 12, a mounting frame 4 is installed on the base 1, a lifting device 40 is installed on the mounting frame 4, the lifting device 40 is connected to a mounting plate 41, the lifting device 40 drives the mounting plate 41 to move vertically up and down, a movable frame 42 is provided below the mounting plate 41, a pressure roller 43 is installed on the movable frame 42, the pressure roller 43 is located directly above the winding drum 5, the length of the pressure roller 43 is greater than the length of the winding drum 5, a plurality of vertically arranged guide rods 44 are installed on the movable frame 42, a plurality of guide holes corresponding to the guide rods 44 are provided on the mounting plate 41, the guide rods 44 pass through the guide holes, a spring 45 is installed on the movable frame 42, the top of the spring 45 is connected to a pressure sensing device 46 fixed to the bottom of the mounting plate 41, and the pressure sensing device 46 and the lifting device 40 are both connected to a control device.

[0015] The driving mechanism consists of a servo motor 25 and a screw rod 26. The servo motor 25 is installed on the base 1. The servo motor 25 is connected to a screw rod 26. The end of the screw rod 26 is rotatably installed on the fixed column 10. The movable seat 2 is provided with a thread hole matching the screw rod 26. The movable seat 2 is screwed on the screw rod 26. The base 1 is provided with a slide groove 15 parallel to the screw rod 26. The bottom of the movable seat 2 is provided with a slider 23 matching the slide groove 15.

[0016] A limiting ring 31 is provided on the air inflation shaft 3 , and the limiting ring 31 abuts against the end of the winding drum 5 close to the movable column 20 .

[0017] The cross sections of the embedding groove 12 and the embedding block 32 are both square.

[0018] The pressure roller 43 is hollow inside.

[0019] Working process of this utility model:

[0020] During the working process of the film winding device for preventing unwinding of the utility model, the control device will pre-set a pressure range and an initial pressure value. When winding, the clamping roller 43 presses against the film. As the film is continuously wound, the clamping roller 43 will gradually rise, and the spring 45 will press the pressure sensing device 46. The pressure sensing device 46 will feed back the pressure information to the control device in real time. When the feedback pressure value is greater than the maximum value of the pressure range, the control device sends a signal to the lifting device 40, and the lifting device 40 drives the mounting plate 41, the movable frame 42 and the clamping roller 43 to rise. During the rising process, the pressure on the spring 45 and the pressure feedback from the pressure sensing device 46 will become smaller. When the feedback pressure is less than or equal to the initial pressure value and greater than the minimum value of the pressure range, the lifting device 40 stops working and continues to roll. During the whole process, the pressure on the film will not be too large, and it is not easy to be crushed. At the same time, there is enough pressure to ensure that the film does not unwind.

[0021] After the winding is completed, the driving motor 21 stops working, and the control device gives a signal to the lifting device 40 to drive the clamping roller 43 to leave the film roll. Then the manipulator used in conjunction with the film winding device holds the film roll, and then the air inflation shaft 3 is deflated. The air inflation shaft 3 no longer supports the winding drum 5. The servo motor 25 drives the screw rod 26 to rotate, and the screw rod 26 drives the movable seat 2 to move away from the fixed column 10. The air inflation shaft 3 is separated from the auxiliary shaft 11, and the air inflation shaft 3 is finally pulled out from the inside of the winding drum 5. The manipulator moves the film roll out, and then the manipulator puts in a new winding drum 5. Under the action of the servo motor 25, the air inflation shaft 3 is inserted into the winding drum 5 and connected to the auxiliary shaft 11 for the next winding.

[0022] The above embodiments are intended to illustrate the present invention, not to limit the present invention. Any solution that is a simple transformation of the present invention falls within the protection scope of the present invention.

Claims

1. The film winding device for preventing loose rolls is characterized by: The invention comprises a base (1), a movable base (2), a fixed column (10), a movable column (20), an auxiliary shaft (11), an air expansion shaft (3), a lifting device (40), a movable frame (42), and a pressing roller (43), wherein a movable base (2) is slidably mounted on the base (1), a driving mechanism for driving the movable base (2) to slide is mounted on the base (1), a movable column (20) and a driving motor (21) are fixed on the base (1), one end of the air expansion shaft (3) is rotatably mounted on the movable column (20), and the air expansion shaft (3) is rotatably mounted on the movable column (20). ) is mounted on a winding drum (5), a pulley (22) is mounted on each of the air expansion shaft (3) and the driving motor (21), and the two pulleys (22) are connected via a belt, a fixed column (10) is fixed on the base (1), an auxiliary shaft (11) is rotatably mounted on the fixed column (10), the auxiliary shaft (11) and the air expansion shaft (3) are located on the same horizontal axis, an embedding groove (12) is provided on the side of the auxiliary shaft (11) close to the movable column (20), and an end of the air expansion shaft (3) close to the fixed column (10) is provided with a groove that is compatible with the embedding groove (12) is provided with an embedding block (32) which is matched with the embedding block (32), the embedding block (32) is embedded in the embedding groove (12), a mounting frame (4) is installed on the base (1), a lifting device (40) is installed on the mounting frame (4), the lifting device (40) is connected to a mounting plate (41), the lifting device (40) drives the mounting plate (41) to move vertically up and down, a movable frame (42) is provided below the mounting plate (41), a pressing roller (43) is installed on the movable frame (42), and the pressing roller (43) is located at the positive side of the winding drum (5). At the top, the length of the pressure roller (43) is greater than the length of the winding drum (5), a plurality of vertically arranged guide rods (44) are installed on the movable frame (42), a plurality of guide holes corresponding to the guide rods (44) are provided on the mounting plate (41), and the guide rods (44) pass through the guide holes, a spring (45) is installed on the movable frame (42), and the top end of the spring (45) is connected to a pressure sensing device (46) fixed to the bottom of the mounting plate (41), and the pressure sensing device (46) and the lifting device (40) are both connected to a control device.

2. The anti-loosening film winding device according to claim 1, characterized in that: The driving mechanism is composed of a servo motor (25) and a screw rod (26). The servo motor (25) is mounted on the base (1). The servo motor (25) is connected to a screw rod (26). The end of the screw rod (26) is rotatably mounted on a fixed column (10). The movable seat (2) is provided with a thread hole matching the screw rod (26). The movable seat (2) is screwed onto the screw rod (26). The base (1) is provided with a slide groove (15) parallel to the screw rod (26). The bottom of the movable seat (2) is provided with a slider (23) matching the slide groove (15).

3. The anti-loosening film winding device according to claim 1, characterized in that: A limiting ring (31) is provided on the air expansion shaft (3), and the limiting ring (31) abuts against the end of the winding drum (5) close to the movable column (20).

4. The anti-loosening film winding device according to claim 1, characterized in that: The embedding groove (12) and the embedding block (32) both have square cross-sections.

5. The anti-loosening film winding device according to claim 1, characterized in that: The interior of the pressure roller (43) is hollow.

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