JP7193690B2 - Film processing system and film processing method - Google Patents

Description

The present invention provides a film processing system having a feed mechanism for running a film material, a processing unit having processing rollers, and a position control mechanism for adjusting a processing position, and a processing unit for running a film material and having processing rollers. relates to a film processing method in which processing is performed while adjusting a processing position.

In the manufacture of pouch containers, etc., it is well known that a long film material is fed out from a raw roll and is run, and a sealing process and a cutting process are performed. It is also known to perform processing such as cutting.
When printing is already applied to a long film material, it is required to minimize misalignment with the original printing when further printing, sealing, cutting, embossing, etc. are performed. there is

For example, in the sealing process and the cutting process, which are processed when intermittent feeding is stopped, it is known to detect the stop position of a print mark or the like with a sensor, camera, or the like, determine the amount of positional deviation, and adjust the stop position of intermittent feeding. There is (see Patent Document 1, etc.).
Further, in the embossing process, a sensor, camera, or the like detects the position of a print mark or the like and adjusts the rotation of the embossing roller (see Patent Document 2, etc.).
Furthermore, in the cutting process, there is a well-known technique in which the position of a printed mark or the like is detected by a sensor, camera, or the like, and the position of a cutting device is adjusted (see Patent Document 3, etc.).

JP 2008-100466 A JP 2013-91315 A JP 2013-103344 A

With these known means, the positions of the printed marks are detected and adjusted based on the amount of positional deviation at a specific timing. It is possible to adjust.
However, in the processing process in which processing is performed by processing rollers such as embossing rollers while the film material is running, random misalignment is unavoidable each time. However, during actual operation, the amount of misregistration may fluctuate and exceed the permissible range of misregistration due to factors such as the amount of film feed fluctuating due to changes in film tension. there were.
When the film material is run at a high speed, there is originally a permissible positional deviation that changes randomly, so there is a problem that it is difficult to make adjustments by accurate feedback.
The present invention is intended to solve such problems. An object of the present invention is to provide a film processing system and a film processing method that can adjust the amount of deviation within an allowable range.

A film processing system according to the present invention is a film processing system having a feed mechanism for running a film material, a processing unit having processing rollers, and a position control section for adjusting a processing position, wherein the processing unit includes the A position adjustment mechanism that is placed in the section where the film material travels by the feed mechanism and moves the processing position back and forth in the film material travel direction, and a feed amount detection unit that detects the feed amount in a predetermined time range of the film material during travel. and the position control section has a calculation section and a position command section, and the calculation section is configured to calculate a position adjustment amount from the feed amount detection value detected by the feed amount detection section. The position command unit is configured to output a position control signal to the position adjustment mechanism of the processing unit based on the position adjustment amount calculated by the calculation unit, and the feed mechanism causes the film material to travel intermittently. In the intermittent feed mechanism, the position command unit outputs a position control signal to the position adjustment mechanism to move the processing position back and forth in the running direction of the film material while the intermittent running of the film material is stopped. It solves the problem.

A film processing method according to the present invention is a film processing method in which a film material is intermittently moved and processed by a processing unit having a processing roller while adjusting a processing position, wherein the processing unit is a film material running section. and has a position adjustment mechanism that moves the processing position back and forth in the running direction of the film material. The problem is solved by calculating the adjustment amount and operating the position adjustment mechanism of the processing unit to adjust the processing position while the intermittent running of the film material is stopped .

According to the film processing system and the film processing method according to the present invention, the feed amount of the film material during running is detected within a predetermined time range, and the position adjustment amount is calculated from the detected feed amount detection value, whereby the tension fluctuation is detected. Even if the amount of positional deviation is due to factors such as the above, it is possible to accurately adjust the amount of positional deviation to be processed within the allowable range even if the processing rollers are used to process the workpiece at high speed.
In addition, by intermittently running the film material and activating the position adjustment mechanism when the film material is stopped, the sealing process and the cutting process, which are processed when the intermittent feeding is stopped, can be incorporated in the same feeding mechanism line. Even if it runs at high speed, it is possible to adjust the amount of positional deviation within the allowable range.

According to the configuration of claim 2, it is possible to adjust the amount of positional deviation of the embossing with respect to the film material during running within an allowable range.
According to the configurations according to claims 3 and 8, by moving the entire processing unit back and forth in the running direction of the film material to adjust the position, there is no need to adjust the timing of rotation of the processing roller, and the amount of calculation is reduced. It is possible to perform control with a small amount and good responsiveness, and it is possible to accurately adjust the machining position deviation amount within the allowable range even if the machine is run at high speed.
According to the configurations according to claims 4 and 9, divergence of control due to individual fluctuations in intermittent feed can be prevented, stable adjustment can be made within a predetermined positional error range, and high-speed operation is possible. becomes.
According to the configuration of claim 5, the feeding amount detection unit has a speed detector, detects the running speed of the film material in a predetermined time range, and feeds the film material in the predetermined time range from the detected running speed . Being configured to calculate the quantity further simplifies the device.
According to the sixth aspect of the present invention, the speed detector is a laser Doppler speed detector, which further simplifies the device.

BRIEF DESCRIPTION OF THE DRAWINGS The schematic explanatory drawing of the pouch production line which incorporated the film processing system which concerns on 1st Embodiment of this invention. FIG. 4 is an explanatory view of embossing operation of the embossing unit of the film processing system according to the first embodiment of the present invention; FIG. 4 is an explanatory diagram of position adjustment of the embossing unit of the film processing system according to the first embodiment of the present invention;

A film processing system according to one embodiment of the present invention performs embossing on a film to be formed into a pouch product, and as schematically shown in FIG. Used in line 10.
In the pouch manufacturing line 10 shown in FIG. 1, the film material F fed from the original fabric roll FR by the original fabric delivery section 11 and cut into two sheets is intermittently fed by the dancer roll 12, and the pouring section 13. , and sent to the bottom seal portion 14, the side seal portion 15 and the cut portion 16 in this order to form a pouch product.
The embossing unit 100 of the film processing system according to one embodiment of the present invention is positioned between the dancer roll 12 and the spout molding section 13 .
Only one of the two film materials F may be embossed, or both film materials F may be embossed.
Alternatively, the embossing unit 100 may be arranged downstream from the injection molding section 13, and the embossing may be performed in a state in which both films are overlapped or after sealing.
Further, the above embodiment is a film processing system using the embossing unit 100 having the embossing roller 110, but if processing is performed while the film is fed by the processing roller, the film processing system having the processing unit for printing, cutting, etc. It is also applicable to systems.

In the embossing unit 100, as shown in FIG. 2, an embossing roller 110 having an embossing die 111 and a pressing roller 120 are arranged at positions facing each other with the film material F therebetween.
Further, in this embodiment, a feed roller 130 for feeding the film material F is arranged downstream of the embossing roller 110 .
The interval between the embossing roller 110 and the pressing roller 120 is set to be equal to or larger than the thickness of the film material F in the portion other than the embossing die 111, and is set so as to compress the film material F in the thickness direction in the embossing die 111 portion. The embossing EB having a shape of is formed as a convex portion on the embossing roller 110 side.
In this embodiment, the embossing roller 110 is provided with two embossing dies 111 that are shifted by 180°, and is configured to perform embossing once per half rotation. It is good, and it is good also as three or more places.
Also, the diameters of the embossing roller 110 and the pressing roller 120 may be the same or different.

Next, the adjustment of the embossing position will be described with reference to FIG.
A laser Doppler speed detector 140, which is a speed detector for detecting the speed of the film material F, is arranged upstream of the embossing unit 100, and the movement amount of the film F is calculated from the speed detected in a predetermined time range. Then, the calculated movement amount of the film F is input to the position control section 150 .
The embossing unit 100 as a whole is configured to be movable back and forth in the running direction of the film material F by a unit moving mechanism 160, which is a position adjusting mechanism.
The position control unit 150 has a calculation unit and a position command unit (not shown). A position adjustment amount is calculated based on the feed amount of F, and the position command section outputs a position control signal to the unit moving mechanism 160 based on the position adjustment amount calculated by the calculation section.

The embossing unit 100 and the laser Doppler velocity detector 140 are located downstream from the dancer roll 12 in the intermittent feed section.
In the intermittent feeding section, the film material F is alternately stopped and fed, so the detection of the speed by the laser Doppler speed detector 140 is performed when the film material F is fed.
When the embossing die 111 sandwiches the film F, the feeding speed of the film material F depends on the rotation of the embossing roller 110, and the fluctuation of the feeding speed due to the fluctuation of the film tension does not occur when the embossing die 111 does not sandwich the film F. Therefore, the speed is detected from the timing from when the embossing roller 110 starts to move until the embossing die 111 starts to pinch the film F, or from when the embossing die 111 releases the film F to when the embossing roller 110 finishes moving. is done in
Since the feed roller 130 is synchronized with the embossing roller 110 , the start and end of movement of the embossing roller 110 may be the start and end of movement of the feed roller 130 .
During processing, the embossing die 111 sandwiches the film F with a strong force, and when the embossing die 111 releases the film F, the force applied to the film F is also released, and the feed amount is temporarily discontinuous due to the momentum. It may become impossible to properly measure the feed amount.
Therefore, it is desirable to detect the speed from the start of movement of the embossing roller 110 to the time when the embossing die 111 starts pinching the film.
In the case of printing and cutting, there is little deformation when released from the printing surface of the processing roller or the cutter section, and the feed rate does not temporarily become discontinuous. Any timing may be used as long as the film F is not sandwiched between the surfaces and the cutter.

The embossing unit 100 is set at an optimum position by the unit moving mechanism 160 so that the position of each embossing EB is within a predetermined error range at the initial stage.
At this time, it is ideal that the detected value of the laser Doppler velocity detector 140 is within a predetermined error range for each intermittent feeding of the film material F. , the error in the feeding amount of the film F also increases.
Since this feed amount error correlates with the position error of the embossing EB, the position control unit 150 calculates the position adjustment amount from the feed speed detection value of the film material F detected by the laser Doppler speed detector 140. be able to.

Furthermore, a statistic obtained from a plurality of speed detection values in a plurality of intermittent feeds, for example, an average value of 20 intermittent feed detection values is obtained, and a movement command is issued to the unit moving mechanism 160 in the direction to correct the error. By moving the embossing unit 100 back and forth in the running direction of the film material F, the divergence of control due to random speed changes each time and long-term speed changes during actual operation is prevented, and each embossing is performed stably. The position of EB is adjusted so that it falls within a predetermined error range.
The movement of the unit moving mechanism 160 is performed while the film material F is stopped intermittently, in which the film material F does not directly receive force from the embossing roller 110 and the pressing roller 120, so that the embossing process is not hindered.

In the above embodiment, the laser Doppler speed detector 140 is used as the feed amount detector. A conventional CCD camera or an optical sensor may be used as the amount detector.
In addition, the position control unit 150 may be physically a single controller as long as it functionally has the above-described calculation unit and position command unit. It may be incorporated in the control device.

REFERENCE SIGNS LIST 10: Pouch production line 11: Raw fabric delivery unit 12: Dancer roll 13: Spout molding unit 14: Bottom seal unit 15: Side seal unit 16: Cut unit 100・・・ Embossing unit (processing unit)
110 ・・・ Embossing roller (processing roller)
111... Embossed die 120... Pressing roller 130... Feed roller 140... Laser Doppler velocity detector (feed amount detector)
150: position control unit 160: unit moving mechanism (position adjusting mechanism)
F: Film material FR: Original fabric roll EB: Emboss

Claims (9)

A film processing system having a feeding mechanism for running a film material, a processing unit having processing rollers, and a position control section for adjusting a processing position,
The processing unit is arranged in a section in which the film material travels by the feeding mechanism, and has a position adjusting mechanism that moves the processing position back and forth in the film material traveling direction, and a feeding amount of the film material in a predetermined time range during travel. It has a feed amount detection unit that detects
The position control unit has a calculation unit and a position command unit,
The calculation unit is configured to calculate a position adjustment amount from the feed amount detection value detected by the feed amount detection unit,
The position command unit is configured to output a position control signal to a position adjustment mechanism of the processing unit based on the position adjustment amount calculated by the calculation unit,
The feeding mechanism is an intermittent feeding mechanism for intermittently running the film material,
A film processing system, wherein the position command unit outputs a position control signal to the position adjusting mechanism to move the processing position back and forth in the direction in which the film material travels, while the intermittent travel of the film material is stopped. 2. The film processing system according to claim 1, wherein the processing unit having the processing roller is an embossing unit having an embossing roller. 3. The film processing system according to claim 1, wherein the position adjusting mechanism is a unit moving mechanism that moves the entire processing unit back and forth in the film material running direction. The calculation unit is configured to calculate the position adjustment amount based on a statistic obtained from a plurality of feed amount detection values by the feed amount detection unit during a plurality of intermittent runs of the film material. 4. The film processing system according to any one of claims 1 to 3. The feeding amount detection unit has a speed detector, is configured to detect the running speed of the film material in a predetermined time range, and to calculate the feeding amount of the film material in the predetermined time range from the detected running speed . 5. The film processing system according to any one of claims 1 to 4, characterized in that: 6. The film processing system of claim 5, wherein said velocity detector is a laser Doppler velocity detector. A film processing method in which a film material is intermittently moved and processed by a processing unit having a processing roller while adjusting a processing position,
The processing unit is arranged in a travel section of the film material, and has a position adjustment mechanism for moving the processing position back and forth in the travel direction of the film material,
Detecting the feeding amount of the film material in a predetermined time range during running,
A position adjustment amount is calculated from the detected feed amount detection value,
A film processing method, comprising operating a position adjusting mechanism of a processing unit to adjust a processing position while intermittent running of a film material is stopped. 8. The film processing method according to claim 7, wherein the position adjusting mechanism is a unit moving mechanism that moves the entire processing unit back and forth in the film material running direction. 9. The method according to claim 7, wherein the film material is intermittently run, and the position adjustment amount is calculated based on a statistic obtained from a plurality of feed amount detection values in a plurality of intermittent runs of the film material. film processing method.

Images