Device and method for zero-speed positioning splicing of thin films

Abstract

The present invention relates to a device and a method for zero-speed positioning splicing of thin films, comprising an unwinding device, a splicing mechanism, a traction mechanism, a storage device and a photoelectric detection device, wherein the unwinding device, the splicing mechanism, the traction mechanism and the storage device are arranged in sequence along the feeding direction of the thin film, and the photoelectric detection device is used to detect the position on the thin film that needs to be spliced ​​and feedback control, so that the splicing mechanism, the traction mechanism and the storage device coordinate with each other to complete the zero-speed positioning splicing of the new film roll and the old film roll. The present invention can perform the splicing of thin films without affecting the normal operation of the production line. During the splicing, the speed at the splicing position is zero, which reduces the docking error, makes the splicing more accurate and stable, reduces the scrap rate of the subsequent process, improves the production efficiency and reduces the cost.

Description

[Technical field]

[0001] The invention relates to a device and a method for zero-speed positioning splicing of thin films. [Background technology]

[0002] The printing, coating and composite equipment of the film in the prior art does not have the function of positioning and splicing. Moreover, when the new film is spliced ​​with the old film, the splicing position speed is relatively fast, and the splicing effect is not good, which easily causes the splicing to fail or the docking error is too large, resulting in a lot of waste in the subsequent processes.

[0003] The present invention is proposed in view of the deficiencies in the prior art. [Summary of the invention]

[0004] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a device and method for zero-speed positioning splicing of thin films, which can achieve precise splicing of new and old films without affecting the normal operation of the production line, with small docking error, and effectively reduce waste in subsequent processes.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solution: a device for zero-speed positioning splicing of film, comprising a unwinding device, a splicing mechanism, a traction mechanism, a storage device and a photoelectric detection device, wherein the unwinding device, the splicing mechanism, the traction mechanism and the storage device are respectively arranged in sequence along the feeding direction of the film, and the photoelectric detection device is used to detect the position on the film that needs to be spliced.

[0006] In the above-mentioned device for zero-speed positioning splicing of films, the photoelectric detection device is fixedly arranged between the splicing mechanism and the storage device along the feeding direction of the film.

[0007] The device for zero-speed positioning splicing of thin films as described above further includes a control unit, and the unwinding device, the splicing mechanism, the traction mechanism, the material storage device and the photoelectric detection device are electrically connected to the control unit respectively.

[0008] The device for zero-speed positioning splicing of film as described above is provided with a cutter mechanism between the unwinding device and the splicing mechanism along the feeding direction of the film, and the cutter mechanism is electrically connected to the control unit. After the head end of the new film roll and the tail end of the old film roll are spliced, the cutter mechanism is actuated to cut off the tail end of the old film roll, and the new film roll provides the film to the subsequent process.

[0009] A method for zero-speed positioning splicing of a film, the method using the device for zero-speed positioning splicing of a film as described above, comprising the following steps:

[0010] S1. The tail end of the old film roll is provided with a mark for determining the position to be spliced. Before the old film roll is about to be used up, the new film roll is placed on the unwinding device, and then the head end of the new film roll is manually pulled onto the splicing mechanism and aligned;

[0011] S2. When the photoelectric detection device detects the mark on the old film roll, the traction mechanism stops working, and the storage device is started to provide the required film for the subsequent process;

[0012] S3, the splicing mechanism is started to splice the head end of the new film roll with the tail end of the old film roll. At this time, the part of the tail end of the old film roll that has passed through the splicing device is in a stationary state, thereby achieving zero-speed positioning splicing;

[0013] S4. After the splicing is completed, the tail end of the old film roll is cut off between the unwinding device and the splicing mechanism;

[0014] S5. Restart the traction mechanism to provide the required film for subsequent processes.

[0015] In the method for zero-speed positioning and splicing of films as described above, in step S5, the traction mechanism first runs at a speed greater than the normal feeding speed after being restarted, and the storage device continues to provide the required film to the subsequent process at the normal feeding speed while storing the excess film sent by the traction mechanism. When the storage device is full of film, the traction mechanism switches to the normal feeding speed, and then the storage device stops running.

[0016] Compared with the prior art, the present invention has the following advantages: the film can be spliced ​​without affecting the normal operation of the production line, the speed at the material connection position is zero during splicing, the docking error is reduced, the splicing is more accurate and stable, the scrap rate of subsequent processes is reduced, the production efficiency is improved, and the cost is reduced; at the same time, the present invention can realize the splicing of films at designated positions according to needs.

Brief Description of the Drawings

[0017] The specific embodiments of the present invention are further described in detail below with reference to the accompanying drawings, wherein:

[0018] Figure 1 Schematic diagram of the present invention before splicing the new film roll with the old film roll

[0019] Figure 2 This is a schematic diagram of the present invention after the new film roll and the old film roll are spliced ​​together. [Specific implementation method]

[0020] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0021] like Figure 1 and Figure 2As shown, a device for zero-speed positioning splicing of thin films comprises an unwinding device 1, a splicing mechanism 2, a traction mechanism 3, a storage device 4, a photoelectric detection device 5 and a control unit 6; the unwinding device 1, the splicing mechanism 2, the traction mechanism 3 and the storage device 4 are arranged in sequence along the feeding direction of the thin film; the unwinding device 1, the splicing mechanism 2, the traction mechanism 3, the storage device 4 and the photoelectric detection device 5 are electrically connected to the control unit 6 respectively; the unwinding device 1 is used to place the thin film roll, and the splicing mechanism 2 is used to place the new film roll 001 The head end of the new film roll 001 is spliced ​​with the tail end of the old film roll 001, the traction mechanism 3 is used to pull the film so as to convey the film to the next process, the storage device 4 is used to store the film and when the traction mechanism 3 stops running, the stored film can be released and provided to the next process, the photoelectric detection device 5 is used to detect the position on the film that needs to be spliced ​​and feed it back to the control unit 6, the control unit 6 is used to automatically control the splicing mechanism 2, the traction mechanism 3 and the storage device 4 to coordinate with each other so as to complete the zero-speed positioning splicing of the new film roll 001' and the old film roll 001.

[0022] Preferably, the photoelectric detection device 5 is fixedly arranged between the splicing mechanism 2 and the storage device 4 .

[0023] Preferably, a cutter mechanism 7 is provided between the unwinding device 1 and the splicing mechanism 2 along the feeding direction of the film, and the cutter mechanism 7 is also electrically connected to the control unit 6. The cutter mechanism 7 is used to cut off the tail end of the old film roll 001 after the new film roll 001' and the old film roll 001 are spliced.

[0024] The method of the present invention uses the device for zero-speed positioning splicing of thin films as described above, and comprises the following steps:

[0025] S1. The tail end of the old film roll 001 is provided with an identification for determining the position to be spliced, and the identification is a pattern printed on the film or a label pasted on the film; before the old film roll 001 is about to be used up, the new film roll 001' is placed on the unwinding device 1, and then the head end of the new film roll 001' is manually pulled onto the splicing mechanism 2 and aligned.

[0026] S2. When the photoelectric detection device 5 detects the mark on the old film coil 001, the traction mechanism 3 stops working, and the storage device 4 is started to provide the required film for the subsequent process.

[0027] S3, the splicing mechanism 2 is started to splice the head end of the new film roll 001' with the tail end of the old film roll 001.

[0028] S4. After the splicing is completed, the tail end of the old film roll 001 located between the unwinding device 1 and the splicing mechanism 2 is cut off.

[0029] S5, restarting the traction mechanism 3 to provide the required film for the subsequent process.

[0030] Preferably, in step S5, after the traction mechanism 3 is restarted, it first runs at a speed greater than the normal feeding speed, and the storage device 4 continues to provide the required film to the subsequent process at the normal feeding speed while storing the excess film sent by the traction mechanism 3. After the storage device 4 is full of film, the traction mechanism 3 switches to the normal feeding speed, and then the storage device 4 stops running.

Claims

1. A device for zero-speed positioning splicing of thin films, characterized by: The invention comprises an unwinding device (1), a splicing mechanism (2), a traction mechanism (3), a storage device (4) and a photoelectric detection device (5) for detecting a position on a film that needs to be spliced, wherein the unwinding device (1), the splicing mechanism (2), the traction mechanism (3) and the storage device (4) are arranged in sequence along the feeding direction of the film; the photoelectric detection device (5) is fixedly arranged between the splicing mechanism (2) and the storage device (4) along the feeding direction of the film; and a control unit (6) is also included, wherein the unwinding device (1), the splicing mechanism (2), the traction mechanism (3), the storage device (4) and the photoelectric detection device (5) are electrically connected to the control unit (6) respectively. The unwinding device (1) is used to place the film roll, the splicing mechanism (2) is used to splice the head end of the new film roll (001') with the tail end of the old film roll (001), the traction mechanism (3) is used to traction the film so as to convey the film to the next process, the storage device (4) is used to store the film and when the traction mechanism (3) stops running, the stored film can be released and provided to the next process, the photoelectric detection device (5) is used to detect the position on the film that needs to be spliced ​​and feed it back to the control unit (6), and the control The control unit (6) is used to automatically control the coordinated actions between the splicing mechanism (2), the traction mechanism (3) and the storage device (4) so ​​as to complete the zero-speed positioning splicing of the new film roll (001') and the old film roll (001). The tail end of the old film roll (001) is provided with a mark for determining the position to be spliced. When the photoelectric detection device (5) detects the mark on the old film roll (001), the traction mechanism (3) stops working, and the storage device (4) is started at the same time to provide the required film for the subsequent process. When the traction mechanism (3) is restarted after the splicing is completed to provide the required film for the subsequent process, the traction mechanism (3) first operates at a speed greater than the normal feeding speed, and the storage device (4) continues to provide the required film to the subsequent process at the normal feeding speed while storing the excess film delivered by the traction mechanism (3). When the storage device (4) is full of film, the traction mechanism (3) switches to the normal feeding speed and the storage device (4) stops running.

2. The device for zero-speed positioning splicing of thin films according to claim 1, characterized in that: Along the feeding direction of the film, a cutting mechanism (7) is provided between the unwinding device (1) and the splicing mechanism (2), and the cutting mechanism (7) is electrically connected to the control unit (6).

3. A method for zero-speed positioning splicing of a film, using the device for zero-speed positioning splicing of a film according to any one of claims 1 to 2, characterized in that: The following steps are involved: S1. The tail end of the old film roll (001) is provided with a mark for determining the position to be spliced. Before the old film roll (001) is about to be used up, the new film roll (001') is placed on the unwinding device (1), and then the head end of the new film roll (001') is manually pulled onto the splicing mechanism (2) and aligned; S2. When the photoelectric detection device (5) detects the mark on the old film roll (001), the traction mechanism (3) stops working, and the storage device (4) is started to provide the required film for the subsequent process; S3, the splicing mechanism (2) is started to splice the head end of the new film roll (001') with the tail end of the old film roll (001); S4, after the splicing is completed, the tail end of the old film roll (001) is cut off at the part between the unwinding device (1) and the splicing mechanism (2); S5, restarting the traction mechanism (3) to provide the required film for the subsequent process; In step S5, after the traction mechanism (3) is restarted, it first runs at a speed greater than the normal feeding speed. The storage device (4) continues to provide the required film to the subsequent process at the normal feeding speed while storing the excess film sent by the traction mechanism (3). After the storage device (4) is full of film, the traction mechanism (3) switches to the normal feeding speed, and then the storage device (4) stops running.

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