A turret type double station automatic unwinding tension control device

Abstract

The utility model discloses a kind of automatic unwinding tension control devices of turret double-station, belong to coating machine technical field, including rack and double-station unwinding mechanism, the double-station unwinding mechanism horizontal rotation is connected in rack;Two unwinding tension adjusting mechanisms are equipped on the rack, two The unwinding tension adjusting mechanism is symmetrically arranged on rack, the rotation is connected between the unwinding tension adjusting mechanism and rack, two The unwinding tension adjusting mechanism corresponds with double-station unwinding mechanism.This utility model can be adapted to multiple specifications materials;The cooperation of driving cylinder and slide rail (239) can flexibly adjust unwinding rotating roller spacing, compatible with different width film cylinder, solve the problem of traditional equipment single specification.

Description

Technical Field

[0001] This utility model belongs to the field of coating machine technology, and in particular relates to a turret-type dual-station automatic unwinding tension control device. Background Technology

[0002] Unwinding devices are used in the unwinding process of film production and processing equipment such as coating machines. Existing unwinding devices fix the film roll used for winding the film onto a rotating shaft, and use an external power source to drive the shaft to rotate, thus moving the film roll and achieving the unwinding action. Traditional single-station unwinding equipment has significant limitations. It can only achieve unilateral unwinding, requiring machine stoppage for roll changes, leading to continuous production interruptions and significantly limiting production efficiency. Furthermore, tension fluctuations during unwinding can directly cause quality problems such as film wrinkles and breaks, affecting the accuracy of subsequent processing. Utility Model Content

[0003] This utility model provides a turret-type dual-station automatic unwinding tension control device to solve the problems in the prior art.

[0004] The present invention adopts the following technical solution: a turret-type dual-station automatic unwinding tension control device, including a frame and a dual-station unwinding mechanism, wherein the dual-station unwinding mechanism is horizontally rotatably connected to the frame; the frame is provided with two unwinding tension adjustment mechanisms, which are symmetrically arranged on the frame and rotatably connected to the frame, and the two unwinding tension adjustment mechanisms correspond to the dual-station unwinding mechanism.

[0005] A further technical solution is that the dual-station unwinding mechanism includes a drive motor, a drive shaft, a drive frame, and two dual-station unwinding devices. The drive shaft is horizontally mounted on the drive frame and is rotatably connected to the frame. The drive motor is located on the side wall of the frame and is connected to the drive shaft for transmission. The two dual-station unwinding devices are respectively mounted on both sides of the drive frame.

[0006] A further technical solution is that each of the dual-station unwinding devices includes a horizontal roller, an upper unwinding roller, a lower unwinding roller, and two mounting plates. The two ends of the horizontal roller are rotatably connected to the drive frame, and the two mounting plates are symmetrically arranged on the drive frame. The two ends of the upper unwinding roller and the lower unwinding roller are respectively rotatably connected to the two mounting plates, and the upper unwinding roller and the lower unwinding roller are arranged vertically at intervals.

[0007] A further technical solution is provided, in which each of the dual-station unwinding devices includes an unwinding motor, two mounting seats, two unwinding rotating rollers, and two drive cylinders. The two drive cylinders are horizontally and symmetrically arranged at the middle position on the drive frame. Two slide rails are respectively provided at both ends of the drive frame. The two mounting seats are symmetrically arranged and slide in cooperation with the two slide rails. The mounting seats are connected to the extension and retraction ends of the drive cylinders. The two unwinding rotating rollers are rotatably connected to the two mounting seats. The unwinding motor is located on one of the mounting seats and is drivenly connected to the unwinding rotating roller.

[0008] A further technical solution is that the drive frame is equipped with a horizontally set scale.

[0009] A further technical solution includes each of the unwinding tension adjustment mechanisms comprising a rotating shaft, two adjusting plates, two adjusting cylinders, an upper adjusting roller, and a lower adjusting roller. The rotating shaft is rotatably connected to the frame. The two adjusting plates are respectively disposed at both ends of the rotating shaft. The telescopic ends of the two adjusting cylinders are respectively hinged to the two adjusting plates, and the tail ends of the two adjusting cylinders are respectively hinged to the frame. The upper adjusting roller is horizontally rotatably connected to the two adjusting plates. Adjusting cylinders are provided on the side walls of the two adjusting plates, and adjusting plates are provided on the telescopic ends of the adjusting cylinders. The lower adjusting roller is rotatably connected to the two adjusting plates.

[0010] The above-mentioned technical solutions adopted in the embodiments of this utility model can achieve the following beneficial effects: Firstly, during operation, the position of the mounting base is adjusted by extending and retracting the drive cylinder according to the width of the film tube, and the unwinding motor adjusts the unwinding speed in real time according to the speed of subsequent processes to ensure that the film output speed matches the processing rhythm. Secondly, it can be adapted to materials of various specifications: the cooperation between the drive cylinder and the slide rail can flexibly adjust the spacing between the unwinding rotating rollers, making it compatible with film tubes of different widths and solving the problem of single specifications in traditional equipment. Thirdly, the unwinding speed is precise and controllable: the unwinding motor directly drives the unwinding rotating rollers, and the unwinding speed can be synchronized with the subsequent processes through closed-loop speed control, reducing tension fluctuations caused by speed mismatch.

[0011] Secondly, the two-stage adjustment mechanism in this invention provides a coordinated response, which compensates for tension deviations caused by changes in roll diameter and speed fluctuations during unwinding in real time. The dual-stage adjustment mechanism can quickly respond to tension fluctuations, effectively preventing film wrinkles and breakage. By adjusting the angle of the upper adjustment roller and the height of the lower adjustment roller, it can adapt to films of different thicknesses and elasticities, such as PET film and aluminum foil, solving the problem of poor adaptability of a single tension adjustment method. Attached Figure Description

[0012] The accompanying drawings, which are included to provide a further understanding of the present invention and constitute a part of this invention, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 3 This is a three-dimensional structural diagram of the dual-station unwinding mechanism in this utility model; Figure 4 This is a side view of the dual-station unwinding mechanism in this utility model; Figure 5 This is a three-dimensional structural diagram of the unwinding tension adjustment mechanism in this utility model. Figure 1 ; Figure 6 This is a three-dimensional structural diagram of the unwinding tension adjustment mechanism in this utility model. Figure 2 ; Figure label: Frame 1, dual-station unwinding mechanism 2, drive motor 20, drive shaft 21, drive frame 22, dual-station unwinding device 23, horizontal roller 231, upper unwinding roller 232, lower unwinding roller 233, mounting plate 234, unwinding motor 235, mounting base 236, unwinding rotating roller 237, drive cylinder 238, slide rail 239, scale 24, unwinding tension adjustment mechanism 3, rotating shaft 30, adjusting plate 31, adjusting cylinder 32, upper adjusting roller 33, lower adjusting roller 34, adjusting cylinder 35, adjusting plate 36. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] The technical solution of the turret-type dual-station automatic unwinding tension control device provided by the present invention will be described in detail below with reference to the accompanying drawings.

[0015] Reference Figures 1 to 6As shown, this utility model embodiment provides a turret-type dual-station automatic unwinding tension control device, including a frame 1 and a dual-station unwinding mechanism 2. The dual-station unwinding mechanism 2 is horizontally rotatably connected to the frame 1. The frame 1 is provided with two unwinding tension adjustment mechanisms 3, which are symmetrically arranged on the frame 1. The unwinding tension adjustment mechanisms 3 are rotatably connected to the frame 1, and the two unwinding tension adjustment mechanisms 3 correspond to the dual-station unwinding mechanism 2.

[0016] The dual-station unwinding mechanism 2 solves the problem of having to stop the machine when changing rolls in traditional single-station equipment by switching stations through horizontal rotation, which greatly reduces production interruption time and improves continuous production efficiency. The symmetrically arranged unwinding tension adjustment mechanism 3 corresponds precisely to the dual workstations, and can adjust the tension in real time according to the unwinding status of each workstation, effectively suppressing tension fluctuations and reducing quality problems such as film wrinkles and breakage. In a specific embodiment, the dual-station unwinding mechanism 2 includes a drive motor 20, a drive shaft 21, a drive frame 22, and two dual-station unwinding devices 23. The drive shaft 21 is horizontally mounted on the drive frame 22 and is rotatably connected to the frame 1. The drive motor 20 is located on the side wall of the frame 1 and is connected to the drive shaft 21 in a transmission manner. The two dual-station unwinding devices 23 are respectively mounted on both sides of the drive frame 22.

[0017] Each of the dual-station unwinding devices 23 includes a horizontal roller 231, an upper unwinding roller 232, a lower unwinding roller 233, and two mounting plates 234. The two ends of the horizontal roller 231 are rotatably connected to the drive frame 22. The two mounting plates 234 are symmetrically arranged on the drive frame 22. The two ends of the upper unwinding roller 232 and the lower unwinding roller 233 are respectively rotatably connected to the two mounting plates 234. The upper unwinding roller 232 and the lower unwinding roller 233 are arranged vertically at intervals.

[0018] Each of the dual-station unwinding devices 23 includes an unwinding motor 235, two mounting seats 236, two unwinding rotating rollers 237, and two drive cylinders 238. The two drive cylinders 238 are horizontally and symmetrically arranged at the middle position on the drive frame 22. The drive frame 22 is provided with two slide rails 239 at both ends. The two mounting seats 236 are symmetrically arranged and slide in cooperation with the two slide rails 239. The mounting seats 236 are connected to the telescopic ends of the drive cylinders 238. The two unwinding rotating rollers 237 are rotatably connected to the two mounting seats 236. The unwinding motor 235 is located on one of the mounting seats 236 and is drivenly connected to the unwinding rotating roller 237.

[0019] The horizontal roller 231 not only guides the direction of the film, but also stabilizes the film tension initially through its own rotation characteristics, reducing sudden tension changes during roll changes.

[0020] Before unwinding the film, the drive motor 20 drives the drive shaft 21 to rotate on the frame 1, which in turn drives the drive frame 22 to rotate. This rotates the two unwinding rollers 237 to the top of the frame 1 to feed the film roll. After feeding one film roll, the other two unwinding rollers 237 can be rotated to the top of the frame 1 to feed the other film roll. After feeding is completed, the drive motor 20 operates, positioning the two film rolls vertically. It can also switch between the working position and the roll changing position. When unwinding on one side, the film roll can be loaded and unloaded on the other side. The two working positions work independently: the two-position unwinding devices 23 on both sides operate independently, and the roll changing and unwinding actions are parallel, completely eliminating production interruptions and adapting to the needs of large-scale continuous production.

[0021] The upper unwinding roller 232 and the lower unwinding roller 233 are mounted vertically at intervals on symmetrical mounting plates 234, respectively, for winding the film roll to be unwound; the horizontal roller 231 is rotatably connected to the drive frame 22 at both ends, for guiding and initially tensioning the unwound film. During operation, the film is guided by the upper unwinding roller 232, the horizontal roller 231 and the lower unwinding roller 233 into the subsequent process; The mounting base 236 is pushed horizontally along the two slide rails 239 on the drive frame 22 by the drive cylinder 238, so as to adjust the spacing between the two unwinding rotating rollers 237 to adapt to film tubes of different widths; the unwinding motor 235 directly drives the unwinding rotating rollers 237 to rotate, and precisely controls the unwinding speed. During operation, the drive cylinder 238 extends and retracts to adjust the position of the mounting base 236 according to the width of the film tube, and the unwinding motor 235 adjusts the unwinding speed in real time according to the speed of subsequent processes to ensure that the film output speed matches the processing rhythm.

[0022] It can adapt to materials of various specifications: the cooperation between the drive cylinder 238 and the slide rail 239 can flexibly adjust the spacing of the unwinding rotating roller 237, and is compatible with film tubes of different widths, solving the problem of single specifications in traditional equipment; Precise and controllable unwinding speed: The unwinding motor 235 directly drives the unwinding rotating roller 237, and the unwinding speed can be synchronized with the subsequent process through closed-loop speed control, reducing tension fluctuations caused by speed mismatch.

[0023] In a specific embodiment, the drive frame 22 is provided with a horizontally set scale 24.

[0024] The scale 24 is horizontally set on the drive frame 22 to visually display the spacing parameters of the two mounting seats 236 or the unwinding rotary roller 237.

[0025] When adjusting the position of the mounting base 236 via the drive cylinder 238, the operator can directly read the current spacing value through the scale 24 and quickly calibrate to the required width of the film tube, such as by preset spacing values ​​according to film specifications. The scale 24 provides a visual spacing reference, avoiding the errors of traditional experience-based adjustments, and improving the spacing adjustment accuracy from ±5mm to within ±1mm.

[0026] In a specific embodiment, each of the unwinding tension adjustment mechanisms 3 includes a rotating shaft 30, two adjusting plates 31, two adjusting cylinders 32, an upper adjusting roller 33, and a lower adjusting roller 34. The rotating shaft 30 is rotatably connected to the frame 1. The two adjusting plates 31 are respectively disposed at both ends of the rotating shaft 30. The telescopic ends of the two adjusting cylinders 32 are respectively hinged to the two adjusting plates 31, and the tail ends of the two adjusting cylinders 32 are respectively hinged to the frame 1. The upper adjusting roller 33 is horizontally rotatably connected to the two adjusting plates 31. Adjusting cylinders 35 are provided on the side walls of the two adjusting plates 31. Adjusting plates 36 are provided on the telescopic ends of the adjusting cylinders 35. The lower adjusting roller 34 is rotatably connected to the two adjusting plates 36.

[0027] First adjustment: The extension and retraction of the cylinder 32 drives the adjustment plate 31 to rotate around the rotating shaft 30, changing the tilt angle of the upper adjustment roller 33, thereby adjusting the wrap angle of the upper part of the film and the contact length between the film and the upper adjustment roller 33, and initially adjusting the tension through the change of friction. Second adjustment: The adjusting cylinder 35 pushes the adjusting plate 36 up and down, changing the height of the lower adjusting roller 34, forming a clamping-tensioning fit with the upper adjusting roller 33, further refining the tension. For example, when the film is loose, the lower adjusting roller 34 moves up to increase the tension; when the tension is too high, the lower adjusting roller 34 moves down to release the tension.

[0028] The two-stage adjustment mechanism provides coordinated response and real-time compensation for tension deviations caused by changes in roll diameter and speed fluctuations during unwinding. The dual-stage adjustment mechanism can quickly respond to tension fluctuations, effectively preventing film wrinkles and breakage. By adjusting the angle of the upper adjustment roller 33 and the height of the lower adjustment roller 34, it can adapt to films of different thicknesses and elasticities, such as PET film and aluminum foil, solving the problem of poor adaptability of a single tension adjustment method.

[0029] The film extends outward from the film tube, passes through the upper unwinding roller 232 to the horizontal roller 231, then passes through the horizontal roller 231 to the lower unwinding roller 233, then passes through the bottom of the upper adjusting roller 33 to the lower adjusting roller 34 and then extends outward.

[0030] The above description is merely an embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the scope of the claims of this utility model.

Claims

1. A turret-type dual-station automatic unwinding tension control device, characterized in that, It includes a frame (1) and a dual-station unwinding mechanism (2), which is horizontally rotatably connected to the frame (1); The dual-station unwinding mechanism (2) includes a drive motor (20), a drive shaft (21), a drive frame (22), and two dual-station unwinding devices (23). The drive shaft (21) is horizontally mounted on the drive frame (22) and is rotatably connected to the machine frame (1). The drive motor (20) is located on the side wall of the machine frame (1) and is connected to the drive shaft (21) in a transmission manner. The two dual-station unwinding devices (23) are respectively mounted on both sides of the drive frame (22). Each of the dual-station unwinding devices (23) includes a horizontal roller (231), an upper unwinding roller (232), a lower unwinding roller (233), and two mounting plates (234). The two ends of the horizontal roller (231) are rotatably connected to the drive frame (22). The two mounting plates (234) are symmetrically arranged on the drive frame (22). The two ends of the upper unwinding roller (232) and the lower unwinding roller (233) are rotatably connected to the two mounting plates (234), respectively. The upper unwinding roller (232) and the lower unwinding roller (233) are arranged vertically at intervals. Each of the dual-station unwinding devices (23) further includes an unwinding motor (235), two mounting seats (236) and two unwinding rotating rollers (237). The two mounting seats (236) are symmetrically arranged, and the two unwinding rotating rollers (237) are rotatably connected to the two mounting seats (236). The unwinding motor (235) is located on one of the mounting seats (236) and is connected to the unwinding rotating roller (237) in a transmission manner. The unwinding motor (235) adjusts the unwinding speed in real time according to the speed of the subsequent process. The drive motor (20) drives the drive shaft (21) to rotate on the frame (1) to drive the drive frame (22) to rotate. After the loading is completed, the two film tubes are positioned vertically to achieve the switching between the working position and the roll changing position. When one side is unwinding, the other side can complete the loading and unloading of the film tube. The frame (1) is provided with two unwinding tension adjustment mechanisms (3). The two unwinding tension adjustment mechanisms (3) are symmetrically arranged on the frame (1). The unwinding tension adjustment mechanisms (3) are rotatably connected to the frame (1). The two unwinding tension adjustment mechanisms (3) correspond to the dual-station unwinding mechanism (2). Each of the unwinding tension adjustment mechanisms (3) includes a rotating shaft (30), two adjustment plates (31), two adjustment cylinders (32), an upper adjustment roller (33), and a lower adjustment roller (34). The rotating shaft (30) is rotatably connected to the frame (1). The two adjustment plates (31) are respectively set at both ends of the rotating shaft (30). The telescopic ends of the two adjustment cylinders (32) are respectively hinged to the two adjustment plates (31). The tail ends of the two adjustment cylinders (32) are respectively hinged to the frame (1). The upper adjustment roller (33) is horizontally rotatably connected to the two adjustment plates (31). The side walls of the two adjustment plates (31) are provided with adjustment cylinders (35). The telescopic ends of the adjustment cylinders (35) are provided with adjustment plates (36). The lower adjustment roller (34) is rotatably connected to the two adjustment plates (36). The adjusting cylinder (32) extends and retracts, causing the adjusting plate (31) to rotate around the rotating shaft (30), changing the tilt angle of the upper adjusting roller (33), and thus adjusting the wrap angle of the upper part of the film; the adjusting cylinder (35) pushes the adjusting plate (36) to move up and down, changing the height of the lower adjusting roller (34), and forming a clamping-tensioning fit with the upper adjusting roller (33); The film extends outward from the film tube, passes through the upper unwinding roller (232) to the horizontal roller (231), then passes through the horizontal roller (231) to the lower unwinding roller (233), then passes through the bottom of the upper adjusting roller (33) to the lower adjusting roller (34) and then extends outward.

2. The turret-type dual-station automatic unwinding tension control device according to claim 1, characterized in that: Each of the dual-station unwinding devices (23) further includes two drive cylinders (238). The two drive cylinders (238) are horizontally and symmetrically arranged at the middle position on the drive frame (22). The drive frame (22) is provided with two slide rails (239) at both ends. The mounting base (236) is slidably engaged with the two slide rails (239). The mounting base (236) is connected to the telescopic end of the drive cylinder (238).

3. The turret-type dual-station automatic unwinding tension control device according to claim 2, characterized in that: The drive frame (22) is provided with a horizontally set scale (24), which is used to display the spacing parameters of the two mounting seats (236) or the unwinding rotary roller (237).

4. The turret-type dual-station automatic unwinding tension control device according to claim 1, characterized in that: The horizontal roller (231) is used to guide and initially tension the unwound film.

5. The turret-type dual-station automatic unwinding tension control device according to claim 1, characterized in that: The drive motor (20) drives the drive frame (22) to rotate, which can rotate the position of the two unwinding rollers (237) of one of the dual-station unwinding devices (23) to the top of the frame (1) to feed the film tube. After the feeding is completed, the rotation drives the other two unwinding rollers (237) to the top of the frame (1) to feed the other film tube.

6. The turret-type dual-station automatic unwinding tension control device according to claim 1, characterized in that: When the film relaxes, the lower adjustment roller (34) moves upward to increase the tension; when the tension is too high, the lower adjustment roller (34) moves downward to release the tension.

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