JPH0451455B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a film fixing device, and particularly to a film fixing device that is capable of automatically and wrinkle-freely winding a film into a roll, cutting it, and then hooking the film onto a new take-up core. The present invention relates to a film fastening device that allows film to be hung and replaced on a regular basis.

Prior Art Conventionally, after a film is wound into a roll around a winding core, the film is temporarily stopped, the film is cut, the cut end of the film is pasted on a new winding core, and the winding of the film is started again. In this type of film winding machine, the work of cutting the film and pasting it onto the winding core was done manually. In this kind of manual film rehanging work,
When the film is cut, the film before being wound loses its tension and sag, so when the film is re-stretched and the cut end is attached to a new winding core, both ends of the film are pinched and pulled with fingers, which causes wrinkles in the film. If a film is easily affixed with wrinkles and then wound as is, there is a problem in that the quality of the product wound on the upper layer is also affected by the wrinkles in the core and deteriorates. In addition, cutting the film and pasting the cut film onto a new take-up core without wrinkles are delicate tasks that require skill, which takes time and becomes an obstacle to labor saving. There was a problem in that the time ratio of film rewinding to the entire winding process became high, and as a result, the throughput of the winder could not be improved.

Purpose of the Invention In order to solve the above-mentioned problems, the present invention prevents deterioration in the quality of the wound product due to wrinkles on the winding core by rehanging the film without causing wrinkles, and at the same time, it is possible to replace the film without causing wrinkles. The purpose is to automate and save labor and improve the winding processing capacity of the winding machine.

Structure and operation of the invention A film fastening device of the present invention that meets this objective includes: A. a winding core that winds a film into a roll; B. a roll that contacts the film on the winding core; and C. the winding core. When the upper film and the roll are separated, the film in the film path formed between the separated two is adsorbed by a suction port, and the adsorbed film is cut and divided into the winding core side and the roll side. a through bar; D a decompression element that communicates with the suction port; and E a depressurizing element that communicates with the suction port; While supporting the take-up core in the same direction as the axial direction, the supported threading bar is retracted from the film path, and after the new take-up core and the roll approach, the film held by the threading bar is removed from the new winding. (a) one end of the through bar is supported within the through bar so that the cutting edge is moved outside the through bar; a film cutting blade protruding from the surface and supported movably in the longitudinal direction of the threading bar; (b) the suction port is disposed on the outer surface of the threading bar in the longitudinal direction of the bar; (c) The outer surface of the through bar adjacent to these suction ports is provided with a groove in the longitudinal direction of the bar, in which the cutting blade moves.

In such a film fixing device, after the film is wound up into a roll, the film is moved to a bar on the film path connected to the wound roll, and the film is stretched without wrinkles and is then moved by a depressurizing element. The film is adsorbed onto the bar surface by air suction from the suction port. In this state, when the cutting blade is run along the arrangement of the suction ports,
The film is adsorbed and held on the bar surface without wrinkles and is cut into a good cut edge. After that, the film up to the cut end on the take-up roll side is wound up on the take-up roll side, a new take-up core is attached to the take-up arm, and the remaining cut end, which is held by the bar, is taken up. By moving the film to the surface of a new take-up core, the cut film is affixed to the new take-up core in a stretched state without wrinkles, and winding begins with the core free of wrinkles. A rolled product of good quality can be obtained. Also,
Since these film adsorption, cutting, and pasting operations are performed automatically, the film can be reloaded stably without wrinkles in a short time, saving labor and increasing the winding processing capacity of the winder. Improvements can be made.

Embodiments Hereinafter, preferred embodiments of the film fixing device of the present invention will be described with reference to the drawings.

1 to 4 show a film fixing device according to an embodiment of the present invention, which is applied to a film slitter. In the figure, reference numeral 1 indicates the entire vicinity of the winding part of the slitter, and the film 2 that has been run is cut across its entire width into a plurality of appropriate widths, and then passes through guide rolls 3, 4, 5, and 6. Winding core 8 attached to left and right winding arms 7
It is then wound up into a roll 9. In order to avoid interference between adjacent winding arms 7, winding is performed in a left-right staggered manner as shown in FIG. The reason why the film 2 is passed through the rolls immediately before winding is asymmetrical is that care has been taken so that the front and back sides of the film 2 to be wound are the same surface on the left and right winding rolls 9. . Further, a contact roll 10 is provided immediately before winding, and the film 2 is wound up while the roll-shaped winding film 9 is brought into contact with the contact roll 10.

A through bar 11 is provided above the left and right winding arms 7, and serves as a bar around which the film is wound around the outer surface of the running film 2, extending across the entire width of the running film 2 in a direction perpendicular to the running direction of the film 2. The through bar 11 is supported by a switching arm 13 which is supported by a frame 12 and serves as a bar support whose tip position can be moved in a foldable manner. The switching arm 13 is located outside the full width of the running film 2, and the switching arm 13 itself does not interfere with the winding arm 7 and the running film 2 by expanding and contracting. The position of the switching arm 13 in FIGS. 1 and 5 shows the state when the through bar 11 is in the retracted position A. The retracted position of the through bar 11 on the left side of the paper may be a position A' as described later.

As shown in FIG. 6, the switching arm 13 switches the film between the rolled film 9 and the contact roll 10 when the through bar 11 releases the rolled film 9 from the contact roll 10. B so that it can be contacted on path 14.
The position of the tip can be controlled to move up to the position.

As shown in FIG. 3, the through bar 11 is supported at both ends by a switching arm 13, and can be rotated in both directions by a drive motor 15 as a drive device attached to the switching arm 13. The rotation of the drive motor 15 is controlled by a control device (not shown), and the rotational position and/or rotational torque of the through bar 11 can be controlled.

As shown in FIGS. 3 and 4, the structure of the through bar 11 consists of a pipe with a double annular cross section. The space between the pipes 16 and 17 is defined by the through bar 1 at the front and rear positions as seen in the film running direction X.
The suction passages 18 and 19 are separated into two suction passages 18 and 19 as decompression chambers extending in the axial direction of the suction passage 1 . Suction path 18, 19
are fluidly connected to a suitable air suction device 31 as a pressure reducing element, and suction and stop of air can be controlled independently from the suction paths 18 and 19, respectively.

Suction ports 20 and 21 are provided corresponding to the two suction passages 18 and 19 to communicate the respective suction passages 18 and 19 with the surface of the through bar 11. The suction ports 20 and 21 are arranged in the direction along the axis of the through bar, and the arrangement is similar to that of the suction path 1.
Similar to 8 and 19, they are located at the front and back when viewed in the film running direction X. Note that in this embodiment, the suction port 2
Although the holes 20 and 21 are arranged in a line, a plurality of small holes may be used, and the shape of the suction ports 20 and 21 is not limited to circular holes, but may be elongated holes or slits.

Further, in this embodiment, two suction paths 18 and 19 are provided as the decompression chamber, but the decompression chamber may be one chamber. When there is only one decompression chamber, the suction ports may be arranged in one row.

A groove 22 is provided between and adjacent to the array of suction ports 20 and 21 of the through bar 11 and extends over the entire length of the through bar 11 in the axial direction. A cutting blade 23 is provided in the groove 22 and protrudes onto the surface of the bar 11 through the cutting edge, and the groove 22 serves as a guide groove when the cutting blade 23 runs in a direction perpendicular to the film running direction X. ing. The cutting blade 23 is fixed to a cutting blade support piece 24 , and the cutting blade support piece 24 is inserted into the pipe 16 and engaged with a traverse guide 25 . By injecting compressed air from a compressed air source connected at the end,
It is designed to run inside the pipe 16. For this reason, the slit 30 provided in the pipe 16 is made as narrow as possible to minimize air leakage.

The operation of the film fixing device constructed as described above will be described below.

First, FIG. 5 shows the state immediately after the film 2 is wound into a roll on the winding core 8 attached to the left and right winding arms 7. When the winding is completed, the traveling of the film 2 is stopped, and the winding arm 7 turns in the direction of the product removal trolley 26 as shown in FIG. 6, while the film 2 remains connected to the rolled film 9. be done. At this time, the roll-shaped winding film 9 is separated from the contact roll 10, and a film path 14 is formed between them. However, since the winding arm 7 is rotated with the film 2 being stretched, film 2
It remains wrinkle-free.

Next, the switching arm 13 is controlled to move, the threading bar 11 is moved from the retracted position A to the position B on the film path 14, and the suction port 2 of the threading bar 11 is moved from the retracted position A to the position B on the film path 14.
The 0 and 21 side surfaces are pressed against the film. When air is suctioned from the suction passages 18 and 19 in this state, the film 2 is attracted to the surface of the through bar 11 by air suction from the suction ports 20 and 21, as shown in FIG. However, the air suction may be started before this time, and the film 2 may be adsorbed at the same time as the through bar 11 is pressed against the film 2. Further, as shown in FIG. 2, when the cut film is wound in a staggered manner, there will be a portion where the film 2 is not present in the suction ports 20 and 21 on the surface of the through bar 11, but the third As shown in the figure, when setting the width of the cut film, apply mask tape 27 to the suction ports 20, 21 in advance.
By partially blinding the suction force in the necessary area, it is easy to ensure the suction power in the necessary area. This film adsorption is performed while applying a weak winding torque to the take-up film 9 side and keeping the film 2 stretched without wrinkles.
1. Even on the surface, wrinkle-free condition is ensured.

Next, the cutting blade 23 is run, and the through bar 11
The film 2 is cut on the surface. Since the cutting blade 23 travels over the entire width of the threading bar 11, all the wound films can be cut in one run even when multiple films are wound. In addition, the cutting blade 23
is run, and the cutting blade 23 is connected to the suction port 2.
Since the film 2 is cut between 0 and 21 and both sides are held, no cutting errors occur and the cut end surface is excellent.

When the film cutting is completed, the suction in the suction path 18 on the side of the wound film is stopped, and the cut end of the film that has been suctioned until then is released from the surface of the threading bar 11, and the rolled film is cut as shown in FIG. It is wound up on the 9 side. The cut end on the opposite side remains attracted to the through bar 11 by suction from the suction port 21.

Next, as shown in FIG. 9, the rolled film 9 is removed onto the carriage 26, and the empty winding arm 7 is pivoted upward. At this time, the through bar 11 is moved to the film cutting position B.
Although it has been moved to position C, which is slightly escaped,
If the film 2 held by the threading bar 11 and the winding core 8 do not interfere with each other while the winding arm 7 is rotating, a new empty winding core 8 may be installed before the winding arm 7 starts rotating. good. In the case of this embodiment, for the winding arm 7 on the left side of the page, after the winding arm 7 and the switching arm 13 are in the state shown in FIG. core 8
is installed. Regarding the winding arm 7 on the right side of the drawing, no interference occurs even if the winding arm 7 is rotated after a new empty winding core 8 is attached.

Next, with respect to the winding core 8 stopped at the position shown in FIG. 10, the through bar 11 is moved as shown in FIGS. 11 to 13 by position control of the switching arm 13. During movement, the film gripped by the through bar 11 is wrinkled by applying a weak torque to the through bar 11 by the drive motor 15, or by controlling the rotation angle and position by a servo motor, computer, etc., or by a combination thereof. It is held in a tensioned state. Further, the movement of the through bar 11 around the winding core 8 is performed along the outer circumferential surface of the winding core 8, and when the suction port 21 that sucks the cut end of the film comes to the surface of the winding core 8. The film attachment to the winding core 8 is completed naturally. That is, a film adhesive such as glue or water is applied to the surface of the winding core 8 in advance, and when the cut end of the film comes to the surface of the winding core 8, suction by the suction port 21 is stopped and the suction is released. As a result, the cut end of the film is affixed to the winding core 8.

In addition, in this example, the through bar 1 on the left side of the page
1, if the retracted position is at position A' shown in Fig. 1, the positional relationships shown in Figs. 11 to 13 can be easily taken, but if the retracted position is at position A In this case, the positional relationship between the through bar 11 and the adsorbed film after the film is cut by the cutting blade 23 will not be as shown in FIGS. 11 to 13, but as shown in FIG. 14. However, even if such a positional relationship is obtained, it can be easily changed to the positional relationship shown in FIG. 11, for example, by the method shown below. That is, for example, as shown in FIGS. 15 to 18, the through bar 1
A wire 28 is provided that moves along the outer peripheral surface of 1,
After cutting the film, move the wire 28 to the adsorbed cut end as shown in FIG.
As shown in FIGS. 17 and 18, the through bar 11
The same positional relationship as shown in FIG. 11 can be obtained by rotating the film, folding the film back using the wire 28, sucking the folded film through the suction port 20 on the opposite side, and running the cutting blade 23 again.

After attaching the film 2 to the take-up core 8 as described above, a slight torque is applied to the take-up core 8, and the take-up arm 7 is rotated with the film taut to contact the contact roll 10 for the next winding. The acquisition will begin. From winding to cutting and pasting to the winding core 8, the film 2 is kept stretched without sagging or wrinkles during the film rewinding process, so that the next new winding will also be free of wrinkles from the winding core. This prevents the product from being adversely affected by wrinkles in the core.

In addition, a series of film changing operations from one winding to the next winding are carried out by the threading bar 11 and the switching arm 1.
3. Since the cutting blade 23 and the like can be used without requiring human labor, it can be easily automated.

Although this embodiment has been described with reference to the case where there are two decompression chambers, it is possible to hold and cut the film even if there is one decompression chamber and the suction ports are arranged in one row. Further, in this embodiment, a slitter that cuts and winds a traveling or rewound film into a plurality of films has been described, but the invention is not limited to the slitter, and the winding film can be wound into a single film. The same can be applied to a certain winder.

Effects of the Invention As explained above, when using the film fixing device of the present invention, a bar equipped with a decompression chamber and a suction port is provided, and the film is attracted to the bar so that the film can be stretched without sagging immediately after being wound. This makes it possible to cut the film as it is and paste it onto the next new take-up core while maintaining the wrinkle-free condition, which reduces the occurrence of wrinkles when changing the film and prevents the core from wrinkling. The effect of being able to wind up a product of good quality is obtained.

In addition, it is possible to mechanize work that previously relied on manual labor, making it easy to automate. Automation can save labor, reduce film reloading time, and essentially improve the throughput of the winder. You can also do it.

Furthermore, the present invention can be implemented by adding a bar having a decompression chamber and a support for the bar to a conventional winding machine, and can easily automate film rewinding and winding without major modification of the winding machine. It is possible to improve the quality of the products.

[Brief explanation of the drawing]

FIG. 1 is a side view of the vicinity of the winding section of a slitter to which a film fastening device according to an embodiment of the present invention is applied;
2 is a plan view of the device shown in FIG. 1, FIG. 3 is a partial perspective view of the device shown in FIG. 1, FIG. 4 is a cross-sectional view of the device shown in FIG. FIG. 6 is a side view showing one state of the film changing operation, FIG. 7 is a partially enlarged view of the state shown in FIG. 6, and FIG. 8 is a side view showing one state of the film changing operation. FIG. 9 is a side view showing one state of the film changing operation, FIG. 10 is a side view showing one state of the film changing operation, and FIG. 11 is a side view showing one state of the film pasting operation. 12 is a side view showing the next state from FIG. 11, FIG. 13 is a side view showing the next state from FIG. 12, and FIG. 14 is a through bar showing an example of film adsorption. 15 is a sectional view of a through bar equipped with a wire, FIG. 16 is a sectional view showing the operation of the device in FIG. 15, and FIG. 17 is a sectional view showing the next state from FIG. 16. FIG. 18 is a sectional view showing the next state from FIG. 17. 1... Winding section, 2... Film, 3, 4, 5,
6... Guide roll, 7... Winding arm, 8...
Winding core, 9...Rolled winding film, 11...
...Threading bar as a bar on which the film is wound, 13...Switching arm as a support for the bar,
14... Film path, 15... Drive motor as a drive device, 18, 19... Suction path as a decompression chamber, 20, 21... Suction port, 23... Cutting blade,
25... Traverse guide, 26... Trolley, 27
... Mask tape, 28 ... Wire, 31 ... Air suction device as a pressure reducing element.

Claims (1)

[Scope of Claims] 1. A take-up core that winds the film into a roll, B. A roll that contacts the film on the take-up core, and C. The film on the take-up core is separated from the roll. D. a through bar that adsorbs the film of the film path formed between the separated two with a suction port and cuts and divides the suctioned film into the winding core side and the roll side; D communicating with the suction port; a pressure reducing element; E. after replacing the winding core with a new winding core, when bringing the new winding core and the roll closer together, supporting the through bar in the same direction as the axial direction of the winding core; At the same time, the supported threading bar is retracted from the film path, and after the new take-up core and the roll approach each other, the threading bar is moved in a direction where the film held by the threading bar contacts the new winding core. (a) a threading bar having one end supported within the threading bar and having a cutting edge projecting above the outer surface of the threading bar; a film cutting blade supported so as to be movable in the longitudinal direction; (b) the suction ports are disposed on the outer surface of the through bar in the longitudinal direction of the bar; and (c) the suction ports are adjacent to the suction ports. In the film fixing device, the outer surface of the through bar is provided with a groove in the longitudinal direction of the bar, in which the cutting blade moves.