Film winding device

Abstract

The present invention relates to a winding device. A film winding device comprises a frame, a film winding shaft structure is installed on the frame, a pressure roller structure is provided on one side of the film winding shaft structure, the film winding shaft structure is connected to a driving structure, the driving structure drives a connecting rod to move through a transmission structure, one end of the connecting rod is connected to the film winding shaft structure, a position controller is provided on the pressure roller structure, the position controller detects the pressure roller status, transmits a signal to the driving structure, the driving structure drives the connecting rod to move and adjust the position of the film winding shaft, and the position controller and the driving structure form a closed-loop control structure. The present invention provides a film winding device that can achieve a neat end face of film winding, a good film winding effect, and is not easy to deviate; it solves the technical problems of uneven film winding end faces and easy deviation of the film during the winding process in the film winding device in the prior art.

Description

Technical Field

[0001] The invention relates to a winding device, in particular to a film winding device. Background Art

[0002] The film winding device is used to wind the film into a film roll of a specified diameter for easy transportation and sale. The film winding device generally includes a frame, on which there is a film winding shaft for winding the film, and on one side of the frame, a pressure roller and other structures are used to press the film to ensure that each layer of film can be tightly wrapped on the film winding shaft. During the film winding process, as more and more film is wound, it is necessary to adjust the distance between the film winding shaft and the pressure roller to ensure that the film can continue to be wound quickly. In the prior art, the adjustment of the film winding shaft is generally controlled by a hydraulic structure. When the film on the film winding shaft becomes thicker and thicker, the hydraulic proportional valve structure moves, driving the film winding shaft to move to adapt to the continuously thickening film winding shaft, and the pressure roller presses the film on the film winding shaft through the clamping structure. However, this structure has the following problems: 1. After repeated use, the hydraulic proportional valve is prone to wear, the viscosity of the oil inside decreases, and the sealing performance is poor. In addition, the hydraulic proportional valve has a large kinetic potential energy, which causes a sudden change in the force acting on the film winding shaft, resulting in problems such as winding deviation between two adjacent layers of winding film; 2. Due to the movement of the film winding shaft, the pressure roller will also move. When the film winding movement is high-speed (the general film winding speed is about 600m / s), the sudden change in movement caused by the sudden change in the force on the film winding shaft will cause a time gap between the pressure roller and the film winding shaft for disengagement. Without the pressure roller to press, air flows in the gap between adjacent winding films, causing the winding film to be misaligned and deviated, resulting in a fault on the end face after winding, and the film winding effect is poor. Summary of the invention

[0003] The present invention provides a film winding device which can achieve a neat film winding end surface, good film winding effect and is not prone to deviation; it solves the technical problems in the prior art that the film winding end surface of the film winding device is not neat and the film is prone to deviation during the winding process.

[0004] The present invention also provides a film winding device with good followability between a film winding shaft and a pressure roller, and the movement of the film winding shaft is smooth and precise, thereby improving the winding effect of the film; it solves the technical problems in the prior art that the film winding shaft and the pressure roller of the film winding device have poor followability, and the movement of the film winding shaft is prone to sudden changes, thereby affecting the winding effect of the film.

[0005] The above technical problems of the present invention are solved by the following technical solutions: a film winding device, including a frame, a film winding shaft structure is installed on the frame, a film winding shaft is arranged on the film winding shaft structure, a pressure roller structure is arranged on one side of the film winding shaft structure, a pressure roller is arranged on the pressure roller structure, the pressure roller presses the film winding shaft, the film winding shaft structure is connected with a driving structure, the driving structure drives the connecting rod to move through the transmission structure, one end of the connecting rod is connected to the film winding shaft structure, a position controller is arranged on the pressure roller structure, the position controller detects the pressure roller situation, transmits the signal to the driving structure, the driving structure drives the connecting rod to move and adjust the position of the film winding shaft, and the position controller and the driving structure form a closed-loop control structure. The film is continuously wound on the film winding shaft, and the pressure roller is always pressed on the film winding shaft to ensure the tightness between each layer of film winding. When the film is wound to a certain thickness, a thrust is generated to make the pressure roller retreat. At this time, the position controller on the pressure roller detects this signal and transmits the signal to the drive mechanism. The drive mechanism drives the film winding shaft to retreat steadily, so that the pressure roller always maintains this state and does not move forward and backward, thereby avoiding the formation of a follow-up time difference between the pressure roller and the film winding shaft. The film winding will not be misaligned, forming the problem of deviation between the two layers of winding film, so that the end surface after winding is neat and has no fluctuation, so that the overall winding effect of the film is good. The controller is designed to be installed on the pressure roller, and the real-time state of the pressure roller is detected to feedback control the movement of the film winding shaft, so that the pressure roller is always in a state of near-stationary motion. The near-stationary state of the pressure roller allows the film to be reliably wound in each layer, and there will be no winding deviation caused by the instantaneous disappearance of the pressure of the pressure roller outside the film.

[0006] The position controller can determine the condition of the pressure roller by detecting the pressure change on the pressure roller or the position change of the pressure roller. Preferably, the position controller includes a cylinder installed on the pressure roller structure, and a position sensor is provided on the cylinder, and the position sensor detects the position of the pressure roller. The pressure roller is pressed against the film winding shaft by the pressure applied by the cylinder, and the condition of the pressure roller can be determined by detecting the position of the cylinder shaft, or the displacement can be detected by detecting other components in the cylinder, such as magnetic rings. Through the detection of displacement, it is known that the winding thickness of the film winding shaft has increased, and the distance between the two needs to be adjusted, so that a signal is sent to the drive structure, and the drive structure adjusts the position of the film winding shaft to achieve a stable position relationship between the film winding shaft and the pressure roller.

[0007] Preferably, the driving structure is a servo motor, the servo motor is connected to a transmission structure, the transmission structure is a sprocket structure or a gear structure, the connecting rod is a screw, wherein the driving wheel is connected to the output shaft of the servo motor, and the driven wheel is connected to the screw. The servo motor drives the screw to move, which has good controllability and good stability of the screw movement, so that the movement of the film winding shaft has a buffering effect, and does not produce a sudden change in force, thereby ensuring the winding effect.

[0008] Preferably, the film winding shaft structure comprises a guide rail base fixed on the frame, a film winding shaft bracket is installed on the guide rail base, a film winding shaft is installed on the film winding shaft bracket, a connecting rod is hinged on the guide rail base, support shafts are fixed at both ends of the guide rail base, and the support shafts are installed on the frames at both ends of the guide rail base. The support shaft rotates in the through hole of the frame, the connecting rod is hinged on the guide rail base, and the forward and backward movement of the connecting rod drives the swing of the guide rail base, thereby achieving the purpose of adjusting the distance between the film winding shaft and the pressure roller.

[0009] Preferably, the pressure roller structure comprises a pressure roller guide rail seat, the pressure roller guide rail seat is fixed on the bracket, a fixing plate is installed on the pressure roller guide rail seat, a position controller is fixed on the fixing plate, a pressure roller bracket is hinged below the fixing plate, and a pressure roller is installed on the pressure roller bracket. The pressure roller is fixed on the pressure roller frame, and the pressure roller bracket can be fine-tuned according to the positional relationship between the pressure roller and the film winding shaft. The position controller monitors the displacement of the pressure roller by detecting the displacement of the pressure roller bracket.

[0010] As a more preferred embodiment, a stopper is provided on the pressure roller support, and the stopper is connected to the cylinder shaft in the position controller. The stopper is always connected to the cylinder shaft, and the pressure of the cylinder shaft is applied to the stopper to ensure that the pressure roller is always pressed against the film. The stopper is located in the moving direction of the pressure roller and is parallel to the radial end face of the pressure roller, which can facilitate the force of the cylinder shaft, so that the pressure roller is pressed against the film winding shaft to ensure the film winding effect.

[0011] As a more preferred embodiment, a locking device is installed on the pressure roller support, and the locking device is connected to the pressure roller shaft. The pressure roller shaft is fixed to the pressure roller support by the locking device to ensure the structural stability of the pressure roller.

[0012] As a more preferred embodiment, the locking device includes a mounting hole opened above the pressure roller bracket, a locking ring of the pressure roller shaft is installed in the mounting hole, the locking ring is an open ring, and a locking lever is connected to the outside of the locking ring.

[0013] Preferably, two sets of film winding shaft structures and two sets of pressure roller structures are installed on the frame, the axes of the two sets of film winding shafts are parallel to each other, the two sets of pressure roller structures are also parallel to each other, each set of film winding shaft structures is connected to a driving structure, and the two driving structures are respectively located at the two ends of the frame. Separate drive control can realize single control winding, and multiple winding can also be achieved, with good flexibility and reasonable structural layout.

[0014] Therefore, a film winding device of the present invention has the following advantages: by installing a control device on the pressure roller, real-time monitoring of the pressure roller condition is achieved, and a closed-loop control system is used to complete the position adjustment of the film winding shaft structure, thereby ensuring that the pressure roller is always in contact with the film winding shaft and has good follow-up performance, thereby ensuring the flatness of the end surface of the rolled film; and the film winding shaft structure adopts a servo motor and a screw rod structure for coordinated transmission, which has good stability and will not produce sudden force changes, thereby ensuring that the film winding will not deviate and produce bubbles, and the film winding effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of a film winding device of the present invention.

[0016] Figure 2 yes Figure 1 Side view of.

[0017] Figure 3 yes Figure 1 Stereoscopic diagram.

[0018] Figure 4 yes Figure 1 A three-dimensional image with one of the rack side panels removed.

[0019] Figure 5 yes Figure 1 A three-dimensional diagram of the internal drive mechanism and transmission structure.

[0020] Figure 6 yes Figure 1 Schematic diagram of the inner pressure roller structure.

[0021] Figure 7 yes Figure 6 Schematic diagram of the locking device inside. DETAILED DESCRIPTION

[0022] The technical solution of the invention is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0023] Example:

[0024] like Figure 1 and 2As shown in Figures 3 and 4, a film winding device includes a frame 1, and the frame 1 includes two side panels parallel to each other. Two groups of film winding shaft structures are installed between the two side panels. The two groups of film winding shaft structures are the same. The film winding shaft structure includes a guide rail base 3, and a guide rail is installed above the guide rail base 3. The two ends of the guide rail base 3 are installed in support holes on the side panels of the frame on both sides through support shafts 9, and the support shaft 9 can rotate in the support holes. A screw rod 7 is hinged on the guide rail base 3 through a hinge seat 10, and the other end of the screw rod 7 is connected to a nut, and the nut is sleeved on the transmission shaft. The transmission shaft is connected to the output shaft of the servo motor through a sprocket, and the screw rod 7 is driven to move by the servo motor 12 (such as Figure 5 As shown in the figure, the servo motor 12 is installed on the base 11. A film winding shaft bracket 4 is installed on the guide rail base 3, and a groove is provided below the film winding shaft bracket 4. Through the cooperation between the groove and the guide rail, the film winding bracket 4 can slide on the guide rail base 3. A film winding shaft 8 is installed on the film winding shaft bracket, and a film can be wound on the film winding shaft 8. The two groups of film winding shafts 8 are parallel to each other, and the servo motors and screw nut structures of the two groups of film winding shafts 8 are respectively installed near the two side panels. The two groups of film winding devices are arranged back to back, and can be driven and operated separately, with good flexibility.

[0025] The roller shaft 6 is installed on the side of the film winding shaft 8, and the two ends of the roller shaft 6 are fixed to the roller support 5 through a locking device. The roller support 5 is fixed to the roller guide rail seat 2 through a fixing plate 16. The lower end of the front side of the fixing plate 16 is fixed to the roller support 5. A groove is formed at the lower end of the rear side of the fixing plate 16. A guide rail is installed on the side of the roller guide rail seat 2. The groove and the guide rail cooperate to allow the roller support 5 to slide on the roller guide rail seat 2. The two ends of the roller guide rail seat 2 are fixed to the two side plates of the frame 1.

[0026] like Figure 6 and 7As shown, a cylinder 17 is fixed to the upper end of the rear side of the fixing plate 16, a cylinder shaft 15 is installed in the cylinder 17, a magnetic ring is installed in the cylinder, a position sensor is installed on the cylinder 17, and the position sensor 18 detects the position of the magnetic ring to monitor the position of the cylinder shaft 15. The output end of the cylinder shaft 15 passes through the through hole on the fixing plate 16 and connects with the stopper 14 on the pressure roller bracket 13. A stopper 14 is installed on each of the two support arms 13 of the pressure roller bracket 5, and the stopper 14 is perpendicular to the support arm 13. A pressure roller 6 is installed above the pressure roller bracket 13, and a locking device is installed at the joint between the support arm 13 and the pressure roller 6. The locking device includes a locking ring 19, which is installed at the upper end of the support arm 13 and is provided with a bayonet 21. The two ends of the pressure roller shaft are sleeved with support bearings, and the support bearings are installed on the support arm 13 through the bayonet 21. A locking ring 10 is installed in the bayonet. The locking ring 19 is an open ring, and the locking ring is coaxially connected to a locking lever, which is located outside the support arm. The locking lever 20 is turned to rotate the locking ring, so that the open ring is adjusted from the bayonet side to the inside, and the pressure roller shaft is locked.

[0027] During operation, the film begins to be wound on the film winding shaft, the pressure roller shaft abuts against the outside of the film, and the cylinder shaft is in the middle position, pressing the pressure roller shaft toward the film winding shaft. When the film on the film winding shaft begins to thicken, the film winding shaft will generate a force that pushes the pressure roller shaft to move backward. The position sensor on the cylinder shaft receives the movement signal and sends the signal to the servo motor. The servo motor controls the movement of the lead screw nut structure, and the guide rail base rotates around the support shaft, thereby adjusting the movement of the film winding shaft. The cooperation between the servo motor and the lead screw nut ensures stable output and slow movement, avoiding sudden changes in force. In this way, the pressure roller shaft and the film winding shaft have better followability, ensuring that the position of the pressure roller shaft remains basically stationary, and the cylinder shaft is always in the middle position, thereby avoiding the sudden change in force that causes the pressure roller shaft and the film winding shaft to be separated instantly, thereby causing the winding film to deviate.

Claims

1. A film winding device, comprising a frame, a film winding shaft structure is mounted on the frame, a film winding shaft is arranged on the film winding shaft structure, a pressure roller structure is arranged on one side of the film winding shaft structure, a pressure roller is arranged on the pressure roller structure, and the pressure roller presses against the film winding shaft, characterized in that: The film winding shaft structure is connected with a driving structure, and the driving structure drives the connecting rod to move through the transmission structure, and one end of the connecting rod is connected to the film winding shaft structure. The pressure roller structure is provided with a position controller, and the position controller detects the pressure roller status and transmits the signal to the driving structure. The driving structure drives the connecting rod to move and adjust the position of the film winding shaft. The position controller and the driving structure form a closed-loop control structure; the pressure roller structure includes a pressure roller guide seat, the pressure roller guide seat is fixed on the frame, and a fixed plate is installed on the pressure roller guide seat, and a position controller is fixed on the fixed plate A device, a pressure roller bracket is hingedly connected to the lower part of the fixed plate, and a pressure roller is installed on the pressure roller bracket; a stopper is provided on the pressure roller bracket, and the stopper is connected to the cylinder shaft in the position controller, and the stopper is always connected to the cylinder shaft. The pressure of the cylinder shaft is applied to the stopper to ensure that the pressure roller is always pressed tightly on the film. The stopper is located in the movement direction of the pressure roller and is parallel to the radial end face of the pressure roller, which can facilitate the force of the cylinder shaft and make the pressure roller press tightly against the outside of the film winding shaft; the position controller includes a cylinder installed on the pressure roller structure, and a position sensor is provided on the cylinder, and the position sensor detects the position of the pressure roller.

2. A film winding device according to claim 1, characterized in that: The driving structure is a servo motor, the servo motor is connected to a transmission structure, the transmission structure is a sprocket structure or a gear structure, the connecting rod is a screw rod, wherein the driving wheel is connected to the output shaft of the servo motor, and the driven wheel is connected to the screw rod.

3. A film winding device according to claim 1 or 2, characterized in that: The film winding shaft structure includes a guide rail base fixed on the frame, a film winding shaft bracket is installed on the guide rail base, a film winding shaft is installed on the film winding shaft bracket, a connecting rod is hinged on the guide rail base, support shafts are fixed at both ends of the guide rail base, and the support shafts are installed on the frames at both ends of the guide rail base.

4. A film winding device according to claim 1, characterized in that: The pressing roller bracket is provided with a locking device, which is connected to the pressing roller shaft.

5. A film winding device according to claim 4, characterized in that: The locking device comprises a mounting hole opened above the pressure roller bracket, in which a locking ring of the pressure roller shaft is mounted, the locking ring is an open ring, and a locking lever is externally connected to the locking ring.

6. A film winding device according to claim 1 or 2, characterized in that: The frame is equipped with two sets of film winding shaft structures and two sets of pressure roller structures. The axes of the two sets of film winding shafts are parallel to each other, and the two sets of pressure roller structures are also parallel to each other. Each set of film winding shaft structures is connected to a driving structure, and the two driving structures are respectively located at both ends of the frame.

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