JP2006321582A - Device for storing predetermined amount of film, and method for using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for storing the predetermined amount of films which is space-saving, and capable of preventing occurrence of wrinkles or folds in the film, and a method for using the same. <P>SOLUTION: In the device for storing the predetermined amount of films, the films 7 of the predetermined amount delivered by a drive roll 1 to be driven by a drive roll motor 2 and a driven roll 4 are wound around a suction roll 5 which is driven by a suction roll motor 6 and capable of performing the vacuum suction, and stored therein. The drive roll motor 2 has an encoder 3 to detect the rotational quantity. The suction roll motor 6 drives the suction roll 5 according to the pulse signal subjected to the frequency conversion to the pulse signal from the encoder 3 by a frequency conversion circuit including a frequency divider circuit 9. The frequency ratio by the frequency conversion circuit is set so that the rotation of the suction roll 5 is smaller than the rotation of the drive roll 1. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a predetermined amount storage device for storing a predetermined amount of a film terminal portion that has been sent out and a method of using the same.

  FIG. 3 is a schematic perspective view showing the processing state of the film terminal unit according to the prior art. When the film 7 was sent out and stored for the required length, if the film length for the stored was left unattended, a space corresponding to the length was required. Also, when there are other units nearby, they interfered with other units. As a countermeasure, the receiving tray 11 for receiving the terminal of the sent out film 7 is provided so that the sent out film 7 does not interfere with other units, but the film 7 on the receiving tray 11 is wrinkled or broken. There is.

  Moreover, the method of winding and storing the film on a roll is common, for example, there is an example disclosed in Patent Document 1, but in some cases, when the film 7 is wound by a roll, The film 7 may be wrinkled or broken due to the tension during winding.

JP 2001-63877 A

  As already mentioned above, even if a saucer for receiving the delivered film terminal is provided, there is a need for a space corresponding to the amount of the delivered film, which may interfere with other nearby units. Folding may occur. In addition, even when the film is wound by a roll, wrinkles or folds may occur in the film due to tension at the time of winding.

  In this situation, an object of the present invention is to provide a film predetermined amount storage device that saves space and does not cause wrinkles or breakage of the film, and a method for using the same.

  In order to solve the above-described problems, in the present invention, a film that is sandwiched between a driven roller that rotates idly and a drive roll that is driven by a motor and that can be fed out is vacuum-sucked to a suction roll that can be vacuum-sucked, and When the film is fed out, the suction roll motor is driven by the suction roll drive pulse signal that has been frequency-converted by the frequency dividing circuit that divides the pulse signal from the encoder that detects the rotation amount attached to the drive roll, and the film is suctioned. It was decided to wind up on a roll.

  That is, the film predetermined amount storage device of the present invention winds a predetermined amount of film fed by a driving roll driven by a first motor and a driven roll around a suction roll driven by a second motor and capable of being sucked by vacuum. In the storage device for a predetermined amount of film to be stored, the first motor includes an encoder for detecting a rotation amount, and the second motor converts the frequency of the pulse signal from the encoder by a frequency conversion circuit including a frequency dividing circuit. The suction roller is driven in accordance with the pulse signal, and the frequency ratio is set by the frequency conversion circuit so that the rotation amount of the suction roll is smaller than the rotation amount of the drive roll.

  Further, the method for using the film predetermined amount storage device according to the present invention includes the frequency ratio of the pulse signal converted by the frequency conversion circuit, the pulse resolution of the encoder, the circumference of the drive roll, and the drive of the suction roll. It is calculated from the resolution, the circumference of the suction roll, and the sag ratio of a predetermined amount of film wound up and stored.

  The amount of rotation that is attached to the drive roll when the film that is sandwiched between the idle driven roll and the drive roll driven by the motor is vacuum-adsorbed to the suction roll capable of vacuum suction and the film is sent out by the drive roll The pulse signal from the encoder that detects the noise is input to a frequency dividing circuit that divides the frequency, and the suction roll driving pulse signal output from the frequency dividing circuit drives the suction roll motor in synchronism with the driving roll to wind the film around the suction roll. Therefore, it is not necessary to provide a space or a tray according to the amount of the film sent out, and there is no problem of wrinkling or folding of the film, and the space can be reduced.

  Further, by appropriately setting the frequency division setting value of the frequency dividing circuit, the rotation amount of the suction roll can be reduced by the frequency division setting value of the driving roll, and the film can be wound while being slackened. By winding the film while slackening in this way, no great tension is applied to the film, and wrinkles and breakage due to the tension during winding are not generated.

  In addition, since the suction roll motor is driven by a pulse signal from the encoder attached to the drive roll, the suction roll motor is driven in synchronization with the drive roll even when the speed of the drive roll fluctuates. No more slack than necessary.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic perspective view showing a film predetermined amount storage device according to an embodiment of the present invention. There is a driven roll 4 that idles and a drive roll 1 that is driven by a drive roll motor (first motor) 2. The driven roll 4 and the drive roll 1 are arranged so as to be in contact with each other, and a film 7 is sandwiched therebetween. The drive roll motor 2 of the drive roll 1 has an encoder 3 that detects the amount of rotation. A vacuum suction hole is arranged in the suction roll 5. The suction roll motor (second motor) 6 is driven by a suction roll drive pulse signal 10 output by a frequency dividing circuit 9 that divides the encoder pulse signal 8 from the encoder 3 of the drive roll motor 2.

  Next, the operation of the film predetermined amount storage device based on such a configuration diagram will be described. The film 7 sandwiched between the drive roll 1 and the driven roll 4 is sent out as the drive roll 1 rotates clockwise. The terminal of the fed film 7 is wound around the suction roll 5 while being vacuum-sucked by the vacuum suction holes arranged in the suction roll motor 6 driven by the suction roll motor 6 rotating in synchronization with the drive roll motor 2. This eliminates the need to prepare a tray or the like according to the length of the fed film.

  Also, when the drive roll circumference and suction roll circumference are the same, and the drive roll encoder resolution and suction roll encoder resolution are the same, the frequency division setting value of the frequency divider 9 is 1 / n times (n is an integer of 2 or more) The suction roll drive pulse signal 10 having a frequency converted to 1 / n times can reduce the rotation amount of the suction roll 5 by the frequency division set value of the drive roll 1. The film can be wound around the suction roll 5 while being slackened, so that a large tension is not applied to the film and the film 7 is not wrinkled or broken. However, in order for the film 7 to have a slack, n must be set to an appropriate value.

  In order to control the rotation speed of the suction roll 5 with respect to the rotation speed of the drive roll 1, the encoder pulse signal 8 from the encoder 3 added to the drive roll motor 2 is 1 / n ( It is also possible to drive the suction roll motor 6 by the suction roll drive pulse signal 10 having a frequency multiplied by m (m is an integer of 2 or more) after being converted to a frequency of n (an integer of 2 or more).

  Further, even when the circumference and resolution of the drive roll 1 and the suction roll 5 are different, the frequency ratio determined by the frequency division setting can be calculated by the following formula. As an example, when the amount of rotation of the suction roll is 80% with respect to the amount of rotation of the drive roll (the amount of movement of the points on the circumference of the drive roll) and the slack ratio is taken as the slack ratio, when winding with that slack, Frequency ratio by frequency division setting = {drive roll circumference / suction roll circumference} × {drive roll encoder resolution / suction roll encoder resolution} × {80/100 (sag ratio)}.

  In the embodiment described above, the film sent out as a method of processing and storing a predetermined amount of the terminal portion of the film is wound by vacuum suction with a suction roll, but the film can be wound. If it has a roll, it is not limited to a suction roll capable of vacuum suction.

  The present invention is a measure against the problem of the space of the stored amount or the folding or wrinkle of the film at the time of storage, even if the film is fed out and stored for the required length regardless of the type and material of the film. It is valid. Further, when the film is wound by a roll, it is effective as a countermeasure when wrinkles or breakage of the film becomes a problem due to tension at the time of winding.

The typical perspective view which shows the film predetermined amount storage apparatus of this invention. The typical perspective view which shows the film winding state in the film predetermined amount storage apparatus of this invention. The typical perspective view which shows the processing state of the conventional film terminal part.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Drive roll 2 Drive roll motor 3 Encoder 4 Follower roll 5 Suction roll 6 Suction roll motor 7 Film 8 Encoder pulse signal 9 Dividing circuit 10 Suction roll drive pulse signal 11 Receptacle

Claims (2)

  In a film predetermined amount storage device for winding and storing a predetermined amount of film fed by a drive roll driven by a first motor and a driven roll on a suction roll driven by a second motor and capable of being vacuum-sucked, The first motor includes an encoder that detects a rotation amount, and the second motor drives the suction roll in accordance with a pulse signal obtained by frequency-converting the pulse signal from the encoder by a frequency conversion circuit including a frequency dividing circuit. The predetermined amount storage device for a film, wherein the frequency ratio is set by the frequency conversion circuit so that the rotation amount of the suction roll is smaller than the rotation amount of the drive roll.   2. The method of using a predetermined film quantity storage device according to claim 1, wherein the frequency ratio of the pulse signal converted by the frequency conversion circuit is determined by the pulse resolution of the encoder, the circumference of the drive roll, and the drive of the suction roll. A method for using a predetermined amount storage device for a film, wherein the predetermined amount of film is calculated from a resolution, a circumference of the suction roll, and a sag ratio of the predetermined amount of film wound and stored.

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