JP2001106400A - Product cutting method in fixed length for film winding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a product cutting method in fixed length for a film winding device accurately practicing cutting of film following a change of winder in a predetermined length in regard to providing a plurality of winding shafts and sequentially setting the winding shafts in an operation position for winding long films or the like manufactured by a film manufacturing device on the winding shafts. SOLUTION: In this method, a plurality of winding shafts are provided on a film winding device 1 and the winding shafts are sequentially set in an operation position for winding film 14 manufactured by a film manufacturing device 13 in a predetermined length and cutting it at the predetermined length. This method features that the film 14 during winding is measured by a length measuring counter 15, forecasting calculation of an operation start timing of a next winding shaft 2 is performed on the basis of travel speed of the film 14 measured by the length measuring counter 15, a winding shaft 2 with the film 14 of a predetermined length wound around it is moved to a cutting position, the next winding shaft 2 is set in a winding position, the winding shaft 2 with the film 14 wound around it and a cutter arm 10 are moved to the cutting position, and the film 14 wound around the winding shaft 12 is cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blown film, a laminated film, a shrink film and other long films manufactured by a film manufacturing apparatus provided with a plurality of winding shafts, and sequentially setting the winding shafts at operating positions. The present invention relates to a method of accurately cutting a film or the like to a predetermined length when the film is wound around the winding shaft.

[0002]

2. Description of the Related Art As described above, a plurality of winding shafts are provided, and the winding shafts are sequentially set at operating positions, and films such as blown films, laminated films, shrink films and the like manufactured by a film manufacturing apparatus. When a coil (hereinafter, abbreviated as a film) is wound into a coil, the film is cut when the coil reaches a predetermined length, and the film is wound on a next winding shaft.

[0003] The winding operation by the winding shaft generally used in the past is as follows: (1) The winding shaft reversal inversion operation is started by setting one stage of the winding length counter. (2) After the reversal is completed, move the cutter arm to the cutting position. (3) The cutter is run according to the setting of the two-stage winding length counter to perform cutting. (4) The product is wound around the new winding shaft, and the winding operation is completed. Is performed.

In this winding operation, a touch roll is brought into contact with the coil of the film to be wound, so that the film is wound densely to prevent air from entering between the coils.

[0005] However, the above-mentioned rewinding operation has a problem that it is necessary to separate the touch roll from the surface of the coil in order to wind the product around the new winding shaft, and during this time, air is trapped between the coils. . Further, since a two-stage counter is used, it is mechanically complicated. Further, there are various problems such as a decrease in length measurement accuracy when the flow speed of the product changes.

[0006]

SUMMARY OF THE INVENTION According to the present invention, when a winding shaft for winding a film into a coil is exchanged, the length of the film being wound is measured successively by a length measuring counter. The operation start time of the next take-up shaft is estimated and calculated from the running speed of the film measured by the above, and the next take-up shaft is set at the take-up position, and the take-up shaft on which the film is taken up is connected to the cutter arm. And moving the film to a cutting position to cut the film wound on the winding shaft accurately to a fixed length.

[0007]

According to a first aspect of the present invention, there is provided a film winding device comprising a plurality of winding shafts, the winding shafts being sequentially set to an operation position. The film manufactured by the film manufacturing apparatus is wound into a predetermined length, and when the film is cut at a predetermined length, the film being wound is measured by a length measurement counter, and the film measured by the length measurement counter is measured. From the traveling speed, the operation start time of the next winding shaft is predicted and calculated, the winding shaft having taken up the film of a predetermined length is moved to the cutting position, and the next winding shaft is set to the winding position. Moving the take-up shaft and the cutter arm on which the film has been taken up to a cutting position, and cutting the film taken up on the take-up shaft by a method for cutting a product fixed length of a film take-up device. is there.

According to a second aspect of the present invention, in the fixed length cutting method for a film winding device according to the first aspect, the operation of predicting the operation start timing of the winding shaft and the cutter arm is performed by the following formula. This is a method for cutting a fixed length product of a film winding device.

[0009] Counter setting value (m) = product length (m)
-Rewinding time (min) x Product running speed (m / min)

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above, according to the present invention, a film manufactured by a film manufacturing apparatus is set by sequentially setting a plurality of winding shafts provided in a film winding apparatus to operating positions. When winding on the winding shaft, the film being wound is measured by a length measuring counter, and from the running speed of the film measured by the length measuring counter, the operation start time of the next winding shaft is predicted and calculated, The next winding shaft is set at the winding position, and the winding shaft on which the film has been wound and the cutter arm are moved to the cutting position to cut the film.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings.
FIG. 1 is an explanatory diagram showing one embodiment of the present invention.

In FIG. 1, 1 is a plurality (two in the figure).
In the film winding device provided with the winding shafts 2, 2, the winding shafts 2, 2 are symmetrically arranged on the circumference of a rotating body 4 rotated by a reversing motor 3. Further, at the film winding position 5 of the film winding device 1, the film manufacturing device 1
3 is provided with a touch roll 6 for guiding the long film 14 manufactured by the method 3 to the winding shaft 2 and contacting the wound film 14 to prevent air from being wound into the film 14. The touch roll 6 is provided at the tip of the arm 8 and moves in parallel along the film 14. Further, a cutter arm 10 that rotates around a fulcrum 11 and allows the cutter 9 installed at the tip to enter and exit the film cutting position 12 of the winding shaft 2 is disposed near the film winding device 1. I have. Also,
Between the film winding device 1 and the film manufacturing device 13, there is provided a length measuring counter 15 connected to a computing device 16 for controlling the operations of the film winding device 1, the touch roll 6, the cutter 9 and the like. .

In order to carry out the present invention using the film winding device constructed as described above, the rotating body 4 of the film winding device 1 is rotated in advance by the operation of the reversing motor 3 so as to rotate one of the winding devices. The shaft 2 is moved to the film winding position 5 and the length of the product to be cut is adjusted by the length measuring counter 15. Therefore, the film 14 manufactured by the film manufacturing apparatus 13 is guided to the winding shaft 2, and while the touch roll 6 is in contact with the film 14, the winding shaft 2 is rotated to start winding the film 14. The measurement of the length of the film 14 wound around the winding shaft 2 is started by the length measuring counter 15, and the measured value is input to the arithmetic unit 16.

The winding of the film 14 proceeds, and the measurement of the length measuring counter 15 is performed at the same time. When the calculated value reaches a preset value, the operation of the calculating device 16 causes the film winding device 1 to operate. The reversing motor 3 starts to operate, and starts moving the winding shaft 2 during film winding from the film winding position 5 toward the film cutting position 12. Move away from 14.

On the other hand, the other winding shaft 2 provided on the rotating body 4 of the film winding device 1 is set at the film winding position 5, and the film 14 is wound around the winding shaft 2, and at the same time, the touch roll 6 It comes into contact with the film 14 being wound again.

At this time, the winding shaft 2 on which the predetermined amount of film has been wound reaches the film cutting position, and at the same time as the above operation, the cutter arm 10 rotates about the fulcrum 11. When reaching the film cutting position 12, the cutter 8 provided at the tip of the cutter arm 10 operates in the width direction of the film 14, and cuts the film 14 wound on the winding shaft 2 to a predetermined length. After cutting the film, the cutter arm 10 rotates about the fulcrum 11 and retreats from the film cutting position 12. In the present invention, since the film is cut by the above-described operation, the chance of air being caught in the film being wound can be reduced as much as possible. Here, an example of the film cutting operation in the present invention will be described.

The length of the product (film) to be cut is 100
0m, winding shaft replacement time 1 minute, product flow speed 1
When 0 m / min is set, the traveling amount of the product while the winding shaft is being replaced is 10 m. Therefore, the above formula: Counter setting value (m) = product length (m) −rewinding time (minute) × product If the calculation is performed based on the traveling speed (m / min) and the set value of the length measurement counter is set to 990 m,
The film wound around the winding shaft is cut into a length of just 1000 m.

The prediction calculation by the length measurement counter is always performed in accordance with a change in the running speed of the film.

[0019]

As described above, according to the present invention, unlike the conventional winding device, there is no need to install a two-stage counter, so that the device and the operation can be simplified. In addition, the length of the product can be accurately cut only by inputting the data of the length of the product into the length measuring counter.

Further, in the present invention, since the non-contact time between the touch roll and the film is short, the possibility that air is trapped between the films can be reduced as much as possible.

[Brief description of the drawings]

FIG. 1 is an explanatory view showing one embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 film winding device 2 winding shaft 5 film winding position 10 cutter arm 12 film cutting position 13 film manufacturing device 14 film 15 length measuring counter

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Masaaki Fujita 4-16-4 Koyama, Shinagawa-ku, Tokyo Tommy Machinery Co., Ltd. F-term (reference) 3F064 AA03 CA02 DA01 3F105 AA04 AB15 BA16 DA23 DB02 4F207 AG01 AP07 AP10 AP11 AR07 AR08 AR11 AR12 KA01 KA19 KM05 KM16 KW21 KW23 KW41

Claims (2)

[Claims] A film winding device is provided with a plurality of winding shafts, and the winding shafts are sequentially set at an operating position to wind a film manufactured by a film manufacturing device to a predetermined length, and At the time of cutting at the length, the film being wound is measured by a length measuring counter, and from the running speed of the film measured by the length measuring counter, the operation start timing of the next winding shaft is predicted and calculated, and a predetermined length is calculated. Moving the winding shaft having wound the film to the cutting position, setting the next winding shaft to the winding position, and moving the winding shaft and the cutter arm having wound the film to the cutting position, A method for cutting a fixed length product of a film winding device, wherein the film wound on the winding shaft is cut. 2. The method according to claim 1, wherein the predictive calculation of the operation start timing of the winding machine and the cutter arm is performed by the following formula. Counter setting value (m) = product length (m)-rewinding time (min) x product running speed (m / min)