CN219278971U

CN219278971U - Rewinding machine capable of avoiding excessive retraction of film during film breakage

Info

Publication number: CN219278971U
Application number: CN202223375726.2U
Authority: CN
Inventors: 臧世伟
Original assignee: Chongqing Jinmei New Material Technology Co Ltd
Current assignee: Chongqing Jinmei New Material Technology Co Ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-06-30
Anticipated expiration: 2032-12-15

Abstract

The utility model discloses a rewinding machine for preventing film from excessively retracting when a film is broken, which comprises an unwinding roller, a winding roller, a driving mechanism and a controller, wherein a first tension roller and a second tension roller are arranged between the unwinding roller and the winding roller, the first tension roller and the second tension roller are used for detecting film tension, a first brake roller group and a second brake roller group are arranged between the first tension roller and the second tension roller, and the first brake roller group and the second brake roller group are respectively driven by one driving mechanism to clamp or loosen the film; the tension roller is used for obtaining a tension value signal when the film passes through, the controller is used for receiving the tension value signal, and when the tension value is within a preset range, the driving mechanism is controlled to drive the brake roller group to clamp the film. According to the utility model, the first brake roller set and the second brake roller set are arranged, after film breaking, two film breaking edges of the film are clamped, and the two film breaking edges are pulled to be close to each other, so that manual pulling by a person is not needed, film receiving is facilitated, and film receiving efficiency is improved.

Description

Rewinding machine capable of avoiding excessive retraction of film during film breakage

Technical Field

The utility model relates to the technical field of film rewinding, in particular to a rewinding machine for preventing film from being excessively retracted when film breakage occurs.

Background

When the rewinding machine is used for rewinding the film product, if the film is provided with blowby or salient points, the film is very easy to break. When the film is rewound, the film has certain tension, the front and back tension of the film is inconsistent in the film transmission process, the tension control is poor, the film breakage can be caused, once the film breakage is caused, two film breakage edges can retract to the unreeling end and the reeling end by a large margin respectively, specifically about 50cm towards the unreeling end, and directly retract to the reeling end. At this time, a film joining is required to join the two broken films together. But the unwinding mechanism and the winding mechanism are required to rotate, and two broken film edges are manually found and held, and the two broken film edges are pulled to be in contact and bonded together. Because the rewinder has more rollers, the space between the rollers is limited, and the film breaking edge is inconvenient to hold and pull by hands.

The above disadvantages are to be improved.

Disclosure of Invention

In order to solve the problems that the rewinding machine has more rollers and limited space between the rollers, and is inconvenient for hands to hold and pull broken film edges, so that film connection is inconvenient, the utility model provides the rewinding machine for avoiding excessive retraction of films during film breaking.

The technical scheme of the utility model is as follows:

the rewinding machine for preventing the film from being excessively retracted during film breaking comprises an unwinding roller, a winding roller, a driving mechanism and a controller, wherein a first tension roller and a second tension roller are arranged between the unwinding roller and the winding roller, the first tension roller and the second tension roller are used for detecting the film tension, a first brake roller set and a second brake roller set are arranged between the first tension roller and the second tension roller, and the first brake roller set and the second brake roller set are respectively driven by one driving mechanism to clamp or release the film; the film is wound around the first tension roller, the first brake roller set, the second brake roller set and the second tension roller in sequence, and finally wound on the winding roller, the tension roller is used for acquiring a tension value signal when the film passes through, and the controller is used for receiving the tension value signal and controlling the driving mechanism to drive the brake roller set to clamp the film when the tension value is within a preset range.

Further, the first brake roller set comprises a first movable roller and a first fixed roller, the second brake roller set comprises a second movable roller and a second fixed roller, the film bypasses the first fixed roller and the second fixed roller, the first movable roller can clamp the film close to the first fixed roller, and the second movable roller can clamp the film close to the second fixed roller.

Further, a first scraper set is arranged between the first brake roller set and the second brake roller set, and the first scraper set is used for detecting the flatness or thickness of the film.

Further, a second scraper set is arranged between the second brake roller set and the second tension roller, and the second scraper set is used for detecting the thickness of the connecting part of the film.

Further, the first scraper set and the second scraper set each comprise a knife roll and a cushion roll, and the film passes between the knife roll and the cushion roll and bypasses the cushion roll.

Further, the first scraper group and the second scraper group are both provided with two scrapers.

Further, a film receiving platform is arranged between the first brake roller set and the second brake roller set, and the film receiving platform is positioned below the film.

Further, the film level between the first set of brake rolls and the second set of brake rolls.

Further, each roller in the first brake roller set and the second brake roller set is a rubber roller.

Further, the device also comprises a plurality of passing rollers.

Further, the tension value is within a preset range, specifically, the tension value is greater than a preset value and/or the tension is 0.

According to the scheme, the film cutting machine has the beneficial effects that by arranging the first brake roller set and the second brake roller set, after the film is cut off, two film cutting edges of the film are clamped, and the two film cutting edges are pulled to be close to each other, so that manual pulling by a person is not needed, the film cutting is convenient, and the film cutting efficiency is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic diagram of an embodiment of a drive mechanism;

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a schematic view of another embodiment of a driving mechanism;

wherein, each reference sign in the figure: 1. an unreeling roller; 2. a wind-up roll; 3. a film; 4. a first tension roller; 5. a second tension roller; 6. a first brake roller set; 601. a first movable roller; 602. a first fixed roller; 7. a second brake roller set; 701. a second movable roller; 702. a second fixed roller; 8. a first scraper set; 9. a second scraper set; 10. a film receiving platform; 11. passing through a roller; 12. a base; 13. a driving mechanism; 14. an output shaft; 15. and a limit column.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "mounted" or "disposed" or "connected" to another element, it can be directly or indirectly on the other element. The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "multiple" is two or more, unless explicitly defined otherwise. The meaning of "a number" is one or more than one, unless specifically defined otherwise.

As shown in fig. 1, the rewinding machine for preventing the film from being excessively retracted during film breakage comprises an unwinding roller 1, a winding roller 2, a driving mechanism 13 and a controller, wherein a first tension roller 4 and a second tension roller 5 are arranged between the unwinding roller 1 and the winding roller 2, the first tension roller 4 and the second tension roller 5 are used for detecting the tension of the film 3, a first brake roller set 6 and a second brake roller set 7 are arranged between the first tension roller 4 and the second tension roller 5, and the first brake roller set 6 and the second brake roller set 7 are respectively driven by one driving mechanism 13 to clamp the film 3 or release; the film 3 sequentially bypasses the first tension roller 4, the first brake roller set 6, the second brake roller set 7 and the second tension roller 5, is finally wound on the winding roller 2, the tension roller is used for acquiring a tension value signal when the film 3 passes through, and the controller is used for receiving the tension value signal and controlling the driving mechanism 13 to drive the brake roller set to clamp the film 3 when the tension value is within a preset range.

The tension roller can adopt the existing tension roller, the specific structure of the tension roller can comprise a roller body and a tension sensor positioned in the roller body, the roller body transmits force to the tension sensor, and the tension sensor can detect the tension value of the film 3 in the moving process of the film 3 in real time. The specific structural connection relation is that the tension sensor is electrically connected with a controller, and the controller is electrically connected with two driving mechanisms 13.

The driving mechanism 13 can adopt the existing driving mechanism 13, and only the clamping and the loosening of the two brake rollers of the driving brake roller set are needed. Either two brake rolls can be driven to move or only one brake roll can be driven to move against the other brake roll.

As shown in fig. 2, the driving mechanism 13 is schematically configured, and fig. 3 is a top view of fig. 2. Specifically, a driving mechanism 13 is disposed on the base 12, where the driving mechanism 13 may be a motor, and an output shaft 14 of the driving mechanism is a lead screw, and the lead screw is screwed with one end of the second movable roller 701. The other end of the second movable roller 701 is matched with the limit column 15 in an up-and-down sliding clamping manner, so that the other end of the second movable roller 701 is prevented from horizontally rotating. Since the second movable roller 701 is light, a support can be provided at only one end of the second movable roller 701, and the second movable roller 701 is driven to lift by the rotation of the motor, so that the film 3 is clamped and released by the brake roller set.

In another embodiment, as shown in fig. 4, the driving mechanism 13 is two cylinders, and two ends of the second movable roller 701 are driven to lift by the output shafts 14 of the two cylinders, so that the film 3 can be clamped and loosened by the brake roller set.

When the film winding device works, the film 3 is released from the unreeling roller 1 and then sequentially bypasses the first tension roller 4, the first brake roller set 6, the second brake roller set 7 and the second tension roller 5, and finally is wound on the reeling roller 2. The first brake roller set 6 and the second brake roller set 7 are arranged at two ends of the film which is easy to break, the front and back tension of the film 3 is inconsistent in the process of transferring the film 3, the film breaking can be caused by poor tension control, at the moment, the first tension roller 4 or the second tension roller 5 detects the tension change of the film 3, a tension signal is sent to a controller, the controller is used for receiving the tension value signal, and the driving mechanism 13 is controlled to drive the brake roller set to clamp the film 3 when the tension value is within a preset range. Specifically, the tension value is within a preset range, specifically, the tension value is greater than a preset value and/or the tension is 0. The controller controls the first brake roller set 6 and the second brake roller set 7 to brake, and can also control the unreeling roller 1 and the wind-up roller 2 to stop by the controller, film 3 fracture is located between the first brake roller set 6 and the second brake roller set 7 this moment, control the first brake roller set 6 and the second brake roller set 7 clamp film 3, and drive unreeling roller 1, wind-up roller 2, first brake roller set 6, the second brake roller set 7 pull film 3, make two broken film limit be close to, until two broken film limit meet or overlap into the state of being convenient for connect the membrane, operating personnel cuts off thickness department overrun on film 3, connect two broken film limit with adhesive tape etc. again. After the connection is completed, the first brake roller set 6 and the second brake roller set 7 loosen the film 3, and the rewinder continues to wind.

According to the utility model, the first brake roller set 6 and the second brake roller set 7 are arranged, after film breaking, two film breaking edges of the film 3 are clamped, and the two film breaking edges are pulled to be close to each other, so that manual pulling by a person is not needed, film receiving is facilitated, and film receiving efficiency is improved.

In a preferred example, as shown in fig. 1, the first brake roller set 6 includes a first movable roller 601 and a first fixed roller 602, the second brake roller set 7 includes a second movable roller 701 and a second fixed roller 702, the film 3 bypasses the first fixed roller 602 and the second fixed roller 702, the first movable roller 601 can approach the first fixed roller 602 to pinch the film 3, and the second movable roller 701 can approach the second fixed roller 702 to pinch the film 3. In the initial state, a gap exists between the first movable roller 601 and the film 3, so that the film 3 is not hindered from being rewound; after the film is broken, the first movable roller 601 is connected with a pneumatic push rod, the first movable roller 601 is pressed down to the first fixed roller 602 under the pushing of the pneumatic push rod, the first movable roller 601 and the second movable roller 701 clamp one fracture of the film 3, the first fixed roller 602 is connected with a motor through transmission such as a belt, and the motor rotates to pull the film 3 to the second brake roller set 7. Similarly, the second movable roller 701 and the second fixed roller 702 pull the other fracture toward the first brake roller group 6. The power component for driving the first movable roller 601 and the second movable roller 701 may be a hydraulic push rod or an electric push rod.

In a preferred embodiment, as shown in fig. 1, a first scraper set 8 is disposed between the first brake roller set 6 and the second brake roller set 7, the film 3 passes through the first scraper set 8, the first scraper set 8 is used for detecting the flatness or thickness of the film 3, when a bubble or a bump appears on the film 3, the thickness of the film 3 becomes thicker, and when the thickness exceeds a certain range, the film 3 cannot pass through the first scraper set 8, so that the tension on the film 3 is continuously increased until the film 3 is broken.

In a preferred embodiment, as shown in fig. 1, a second doctor blade set 9 is disposed between the second brake roller set 7 and the second tension roller 5, and the second doctor blade set 9 is used to detect whether the thickness of the film 3 after film splicing is within a required range, because two film-cutting edges or film-cutting edges may overlap each other during film splicing, and the adhesive tape also has a thickness when the adhesive tape is used for film splicing.

In a preferred example, as shown in fig. 1, the first blade set 8 and the second blade set 9 each include a cutter roller and a backup roller, and the film 3 passes between the cutter roller and the backup roller and bypasses the backup roller. Both the first set of blades 8 and the second set of blades 9 are provided with two blades. The thickness of the film 3 is controlled by controlling the interval between the two scrapers, thereby ensuring the production quality of the film 3.

In a preferred embodiment, as shown in fig. 1, a film receiving platform 10 is disposed between the first brake roller set 6 and the second brake roller set 7, and the film receiving platform 10 is located below the film 3. The length of film 3 between the first set of brake rollers 6 and the second set of brake rollers 7 is horizontal. The first brake roller set 6 and the second brake roller set 7 draw the fracture of the two films 3 to the film receiving platform 10, so that an operator can conveniently carry out film receiving operation on the film receiving platform 10. The section 3 of the film between the first brake roller group 6 and the second brake roller group 7 is horizontal, so that the film can be further conveniently connected.

In a preferred embodiment, each of the first set of brake rollers 6 and the second set of brake rollers 7 is a rubber roller. The rubber roller has lower hardness, prevents the film surface from being damaged, and can be in close contact with the film 3, so that the film 3 can be clamped.

In a preferred embodiment, as shown in fig. 1, the rewinding machine is further provided with a plurality of passing rollers 11, and the passing rollers 11 change the trend and the position of the film 3, so as to adjust the position of the film 3 according to the production requirement and the production environment.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims

1. The rewinding machine is characterized by comprising an unreeling roller, a winding roller, a driving mechanism and a controller, wherein a first tension roller and a second tension roller are arranged between the unreeling roller and the winding roller, the first tension roller and the second tension roller are used for detecting the tension of the film, a first brake roller set and a second brake roller set are arranged between the first tension roller and the second tension roller, and the first brake roller set and the second brake roller set are respectively driven by one driving mechanism to clamp or release the film; the film is wound around the first tension roller, the first brake roller set, the second brake roller set and the second tension roller in sequence, and finally wound on the winding roller, the tension roller is used for acquiring a tension value signal when the film passes through, and the controller is used for receiving the tension value signal and controlling the driving mechanism to drive the brake roller set to clamp the film when the tension value is within a preset range.

2. The rewinder for avoiding excessive film retraction during film breakage according to claim 1 wherein the first set of brake rollers comprises a first movable roller and a first fixed roller, the second set of brake rollers comprises a second movable roller and a second fixed roller, the film bypasses the first fixed roller and the second fixed roller, the first movable roller is capable of clamping the film toward the first fixed roller, and the second movable roller is capable of clamping the film toward the second fixed roller.

3. The rewinder for preventing excessive film retraction during film breakage according to claim 1, wherein a first scraper set is arranged between the first brake roller set and the second brake roller set, the film passes through the first scraper set, and the first scraper set is used for detecting the flatness or thickness of the film.

4. A rewinding machine for preventing excessive retraction of a film when a film is broken according to claim 3, wherein a second scraper set is arranged between the second brake roller set and the second tension roller, and the second scraper set is used for detecting the thickness of the connecting part of the film.

5. The rewinder for avoiding excessive film retraction during film breakage as recited in claim 4 wherein said first and second doctor blade sets each include a knife roll and a backing roll, said film passing between said knife roll and said backing roll and bypassing said backing roll.

6. A rewinder for avoiding excessive film retraction during film breakage as recited in claim 5 wherein said first and second blade sets are each provided with two blades.

7. A rewinding machine for preventing excessive film retraction during film breakage according to claim 1 wherein the tension value is within a preset range, in particular a tension value greater than a preset value and/or a tension of 0.

8. A rewinder for avoiding excessive film retraction during film breakage as recited in claim 1 wherein said film is level between said first and second sets of brake rollers.

9. The rewinder for preventing excessive film retraction during film breakage according to claim 1 wherein each of the first and second sets of brake rollers is a rubber roller.

10. The rewinder for preventing excessive film retraction during film breakage as recited in claim 1 further comprising a plurality of pass rollers.