JPH1035962A - Sheetlike material splicing device and air tensioner-cum-air suction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheetlike material splicing device that aims at almost complete automation and also ease of handling, aside from the promotion of shortening a sheetlike material line. SOLUTION: This device is provided with a film suction holding means 10 with a suction box 11 being reciprocable in the vertical direction to a film running plane determined by a pair of guide rollers 4 and 5, and when coming into contact with a film 3, making it into vacuum suction for locking, and a film cutter means 20 equipped with a film cutter 27 being installed in opposite to this film suction holding means in relation to the film running plane and capable of reciprocating motion in the vertical direction and a double-side adhesive tape sticking device 27, respectively. In addition, it is also provided with a scrap take-up roller 8 winding the tip side of a succeeding film guided by another guide roller 7, and a film splicing means 30 equipped with a film guide roller capable of reciprocating motion in the diagonal direction after passing through an interval between the guide roller and the scrap take-up roller and coming into contact with the film suction holding means, and a film cutter 38, respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet-like material such as a film slitter, a sheet-like post-processing equipment, and a preceding sheet-like material unwound from one unwinder having a plurality of unwinding shafts. The present invention relates to a sheet-like material joining apparatus for joining a sheet-like material wound around another shaft.

[0002]

2. Description of the Related Art Various devices have been provided for joining the end of a preceding unwinding sheet roll and the unwinding start end sheet of a succeeding full roll in a twin-screw turret type unwinder. For example, a double-sided adhesive tape is stuck to the unwinding start end of the sheet of the full roll, and when the sheet of the preceding unwind roll becomes small, the full roll is previously rotated at the same peripheral speed as the sheet unwinding speed, and the running is performed. Abutting the leading sheet to the full roll, affixing the unwinding start end of the full roll to the preceding sheet with an adhesive tape to join the sheets, and after joining the sheets, the remaining of the preceding unwinding roll is removed. There is a disconnecting device.

[0003] When such sheet joining is performed, the joining portion becomes a spliced portion, and there is a disadvantage that the cut end of the sheet of the advance unwinding roll from the joining portion hangs down from the joining portion of the sheet. In order to eliminate such disadvantages, there is a device introduced in JP-A-6-234443 as an apparatus for automatically splicing the end of the preceding unwound sheet and the leading end of the subsequent unwound sheet and automatically joining them. The outline will be described.

In FIGS. 6 and 7, two first sheet gripping devices 05 and 05 'are provided on a turret board 01 in correspondence with respective unwinding shafts 04 and 04'. A second sheet gripping device 024, a sheet cutting blade 026, and an adhesive tape sticking device 010 are integrally provided on the sheet traveling line so as to be able to reciprocate. At the time of joining, the preceding sheet is partially stopped, and first, the first sheet gripping device
05 and the second sheet gripping device 024, the end of the roll of the preceding sheet roll R is gripped, the gap between the two grippers is cut by the sheet cutting blade 026, and then the turret board 01 is turned. The cutting end of the preceding sheet gripped by the gripping device 024 and the unwinding start end (cut manually) of the full roll R 'gripped by the first sheet gripping device 05' are abutted. Adhere with the adhesive tape of the adhesive tape attaching device 010.

The adhesive tape sticking device 010 is mounted so as to be movable on the slide rail (not shown) from the solid line position A shown in FIG. 7 to the chain line position B between the unwinding machine I and the accumulator II. 01 In the turning and sheet cutting process, the sheet is retracted to the solid line position A, and when the old and new tapes are abutted, the tape is moved to the chain line position B to perform the joining operation.

As shown in FIG. 8, reference numeral 011 denotes an adhesive tape roll which is mounted on an unwinding shaft 013 of a tape unwinding machine frame 012. 014 is a guide roller, 015 is an adhesive tape guide slit, and the tip of the adhesive tape is located at a position 016 slightly protruding from the guide slit 015. Reference numeral 017 denotes a tape tip gripping device which is configured to open and close a tip claw thereof, and is attached to the tip of the rotating arm 018. Reference numeral 019 is an adhesive tape pressing device, 020 is an adhesive tape sticking roller, and the adhesive tape sticking roller 020 is rotatably attached to the tip of another rotating arm 021. 022 is a tape cutting device. The adhesive tape applying device 010 traverses in the sheet width direction by an actuator (not shown).

[0007] At first, the operation of sticking the adhesive tape is performed by first applying the tape tip 016 pulled out by the adhesive tape roll 011 to the tape tip 016.
The tape guide slit 015 is slightly projected from the tip. The tape tip 016 is gripped by the tape tip gripping device 017, and the tape tip gripping device 017 is rotated to pull out the adhesive tape from the slit 015. Subsequently, the adhesive tape stretched between the tape guide slit 015 and the tape tip holding device 017 is pressed by the adhesive tape pressing device 019,
Press and paste on the sheet. The adhesive tape attaching device 010 is
The sheet is traversed in the width direction of the sheet at positions a to b and c in FIG. 8 by an actuator (not shown). The position b is the position where the adhesive tape is cut. The position c is an operation position where the adhesive tape to which the sheet is bonded is turned at the end after cutting and is attached to the sheet.

[0008]

In a conventional sheet-like material automatic joining apparatus, there are many steps in which a new and old sheet-like material joining operation is performed manually when a raw material roll of a sheet-like material unwinding machine is replaced. However, there is a demand to reduce the number of hands and fully automate. In addition, since the old and new sheets are abutted and both sides are affixed to each other with an adhesive tape, the width of the adhesive tape is widened, the tape is likely to be deviated or wrinkled, and there is a problem in handling. In addition, the adhesive tape is required to have a tensile strength.

In the case where an air tensioner is provided after unwinding of the sheet material unwinding machine and a sheet material joining device is installed at the same time, a dedicated sheet material holding head for holding the sheet material is separately provided. Since it must be provided, the equipment will be long, but we want to shorten the sheet-like material line by also using functional parts.

SUMMARY OF THE INVENTION An object of the present invention is to provide a sheet-like material joining apparatus and an air tensioner which can also be used for air suction, which can be substantially completely automated, can be easily handled, and can shorten the sheet-like material line.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention relates to an unwinding machine having a plurality of unwinding shafts capable of adjusting a braking force. In a sheet-like article joining apparatus for joining a wound sheet-like article, when a sheet comes into contact with a sheet-like article reciprocally movable in a vertical direction with respect to a sheet-like article traveling surface determined by a pair of guide rollers, A sheet-like object suction holding means having a suction housing for vacuum-sucking and fixing the sheet-like material, and a sheet-like member provided opposite to the sheet-like material suction holding means with respect to the sheet-like material running surface and capable of reciprocating vertically. Sheet-like object cutter means having an object cutter and a double-sided adhesive tape applying device, a scrap take-up roller for winding the leading end side of a subsequent sheet-like object guided by another guide roller, and
By means of a sheet-like article guide roller and a sheet-like article joining means provided with a sheet-like article cutter, which can reciprocate in an oblique direction through the space between the guide roller and the scrap take-up roller and come into contact with the sheet-like article suction holding means. It is configured.

In the sheet bonding apparatus having the above structure, while the preceding sheet is stopped, the suction housing of the sheet suction and holding means is moved to abut on the preceding sheet, and is fixed and held. The preceding sheet-like material is cut laterally by the cutter by approaching the sheet-like material cutter, and a double-sided adhesive tape is applied to the trailing edge of the preceding sheet-like material, then the sheet-like material cutter is separated, and the sheet-like material is joined. In the course of moving the means forward and obliquely passing between the guide roller and the scrap take-up roller, the succeeding sheet-like material unwound from the other shaft is pushed out by the guide roller, and the succeeding sheet-like material is moved to the preceding sheet. The sheet-like material on the scrap take-up roller side is cut and removed with the cutter of the same means, and then the sheet-like material cutter is returned to its original position. The back, stop the vacuum suction of the suction holding means away the means from the sheet material, which has the effect of starting the travel of the sheet, which with a attempt to resolve the problem.

[0013] In the sheet-like article joining apparatus,
The above-mentioned sheet-like material suction holding means provided with a cutter escape groove in the center of the suction surface of the suction housing in the direction perpendicular to the sheet-like material traveling direction facilitates cutting when the sheet-like material is joined, and is a more preferable solution. It is.

Further, in the sheet joining apparatus according to the above item 2, the air pipe of the suction casing of the sheet sucking and holding means is switched between pressurized air and vacuum to form a nozzle casing capable of both air suction. In the case of air suction, it is used as a sheet-like material suction holding means of the sheet-like material joining device,
When the air pipe is switched to a pressurized air blower to form a nozzle housing, a sheet joining device that can be used as an air tensioner while the sheet is traveling is a means for solving the problem.

Further, in an air tensioner of a sheet-like material unwound from an unwinding machine having a plurality of unwinding shafts capable of adjusting a braking force, a switching valve is provided in an air pipe of a tensioner nozzle housing, and a pressurizing operation is performed. A nozzle housing for air suction that can switch between air and vacuum, and at the same time, the nozzle housing can rotate about 90 degrees about an axis parallel to the sheet and perpendicular to the running direction,
At the center of the suction surface, a cutter escape groove is provided in the direction perpendicular to the sheet-like material traveling direction, and when performing sheet-like material joining manually,
The problem is solved by an air tensioner that also serves as air suction, characterized in that the joining operation is facilitated by rotating the nozzle housing.

[0016]

BEST MODE FOR CARRYING OUT THE INVENTION

[First Embodiment] An embodiment in which the sheet joining apparatus of the present invention is applied to an unwinding machine having two unwinding shafts in a post-processing facility for films and sheets such as a film slitter is shown in the figure. It will be described based on the following. A description of a dancer roll, a film tensioner, and the like in a later process will be omitted.

FIG. 1 is a side view of an automatic film joining apparatus.
FIG. 2 is a side view showing a film joining step of the apparatus of FIG.

In the drawing, reference numeral 1 denotes an unwinding machine having two unwinding shafts 2 and 2 '. The unwinding shafts 2 and 2' are each capable of controlling a braking force, and are driven shafts. Outboard rotating shaft 1a
Rotate by 180 degrees around. 3 is a preceding film, which is wound around the unwinding shaft 2, 3 'is a subsequent film,
It is wound around the unwinding shaft 2 '. Reference numerals 4 and 5 are guide rollers for holding the position of the cutting and joining of the film,
Reference numeral 7 denotes a guide roller for guiding the succeeding film 3 ′, and reference numeral 8 denotes a driving and rotating scrap winding roller, which is configured to wind a scrap portion of the film 3 ′ guided by the guide roller 7 with the scrap winding roller 8. ing.

Reference numeral 10 denotes film suction holding means,
Is a frame of the holding means 10. A guide rail 15 for guiding the suction housing 11 and a motor 13 for rotating and driving a feed screw 14 for moving the suction housing 11 up and down are fixedly provided on the frame 12. The position of the suction housing 11 indicated by a solid line indicates the position of the film joining process, and the position of the suction housing 11 'indicated by a two-dot chain line indicates the position where the suction housing 11 is retracted during the film running. A cutter escape groove 11 a is provided in a lower portion of the suction housing 11.

Reference numeral 20 denotes a film cutter. Reference numeral 22 denotes a frame of the cutter 20. The frame 22 has a guide rail 25 for guiding the cutter head 21 and a motor 23 for rotating a feed screw 24 for moving the cutter head 21 up and down. Is fixed. A double-sided adhesive tape attaching device 26 and a cutter 27 are attached to the cutter head 21. The double-sided adhesive tape applying device 26 and the cutter 27
Is driven by an actuator, cuts the film while traversing the film, and affixes a double-sided adhesive tape to the rear edge of the cut preceding film 3, and this configuration has been described in the example of the prior art above. It has the same structural action as the one described above. FIG. 2 shows a state in which the cutter head 21 is retracted.

Reference numeral 30 denotes a film joining means, and 31 denotes a joining head. Reference numeral 32 denotes a frame of the film joining means 30. The frame 32 is provided with a guide rail 35 for guiding the joining head 31 and a motor 33 for rotating and driving a feed screw 34 for moving the joining head 31 up and down. A holding roller 36 and a guide roller 37 are provided on the joining head 31.
And a cutter 38 are attached. The cutter 38 is driven by an actuator to cut the leading film of the succeeding film 3 'while traversing the leading portion of the film 3', and to wind the leading scrap film on the scrap winding roller. FIG.
The joining head 31 passes between the guide roller 7 and the scrap take-up roller 8, pushes the film 3 ′ wound on the scrap take-up roller 8 via the guide roller 7, and is pressed by the holding roller 36. ′ Is pressed against and adhered to the adhesive tape at the edge of the preceding film 3.

The operation of the embodiment constructed as described above will be described. The leading film 3 of the unwinding shaft 2 is reduced. The suction housing 11 is moved closer to the film line, the cutter head 21 is moved closer to the film line from the opposite side of the suction housing 11, the running of the film 3 is stopped, the suction housing 11 is evacuated, and the film 3 is suction-held. While cutting the preceding film 3 by the cutter 27 of the cutter head 21, a double-sided adhesive tape is stuck to the trailing edge of the film 3. After pasting, the cutter head 21 is lowered to return to the original position. The leading end of the film 3 ′ of the unwinding shaft 2 ′ is wound around the scrap roll 8, the joining head 31 is advanced, and the suction housing 1 is moved.
1, the succeeding film 3 ′ abuts against the edge of the preceding film 3, and is pressed against the joining double-sided adhesive tape 28 by the pressing roller 36 to join the old and new films.
At 8, the leading portion of the subsequent film 3 ′ is cut and wound on a scrap roll 8. When the joining is completed, the suction housing 11 and the joining head 31 are returned to their original positions, and the film line is started.

[Second Embodiment] In the present embodiment, the air pipe of the film suction housing in the automatic film bonding apparatus similar to the first embodiment is switched between pressurized air and vacuum, so that the film of the film bonding apparatus can be changed. Suction holding means, a device also used as an air tensioner during film running,
This is shown in FIGS.

As shown in the drawing, the unwinder 1 and the guide roller 7, the scrap winding roll 8 and the film cutter 2
The constructions of the film joining means 30 are the same as those of the first embodiment. Unlike the first embodiment, the film suction holding means 1
Instead of 0, a nozzle case 40 also serving as a suction case is fixed to an external member (not shown). The nozzle housing 40 is installed downward between the guide rollers 7 and 9, and an air pipe connected to the nozzle housing 40 has a switching valve 4 provided at a branch portion.
An air blower 41 and a vacuum pump 42 are respectively connected to the pipes at the end of 4.

As shown in the cross section of FIG. 4, the nozzle housing 40 has a large number of blowing nozzles 46 formed in the longitudinal direction at the center with respect to the room 45a of the housing 45, and a large number of blowing nozzles 46 on both sides thereof. A suction port 47 is opened, and a plate valve 48 urged by a valve spring 49 is provided inside the suction port 47. When the room 45a has a positive pressure, the suction port 47 is closed, and the room 45 is closed.
When the pressure a is negative, the suction port 47 is opened. At this time, the blowing nozzle 46 also has a suction action. 45b is a cutter escape groove for cutting the preceding film.

When the air pipe connected to the nozzle housing 40 communicates with the air blower 41, the suction port 47 is closed, and FIG.
As described above, high-speed air is blown from the blowing nozzle 46 to act as an air tensioner on the film 3. 51
Is a film tension detecting sensor for detecting the load applied to the guide roller 5 and measuring the film tension. The detected value is fed back to a control device (not shown) to increase or decrease the braking force of the unwinding shaft, thereby providing an air tensioner. The slack amount of the film 3 in the section is controlled and adjusted to a necessary film tension.

When the air pipe 43 is switched to the vacuum pump 42 side by the switching valve 44 and the nozzle housing 40 is replaced with a suction housing, it can be used as a film joining apparatus similar to the first embodiment.

[Third Embodiment] In this embodiment, when the running of the film is stopped and the film is joined manually, the suction / nozzle housing 40 of the air tensioner is used as a film joining work table.

FIG. 5 is a side view of a film bonding apparatus according to a third embodiment of the present invention. In the figure, the nozzle housing 4
Numeral 0 is a position (joining position) indicated by a solid line from a position indicated by a two-dot chain line (operating position as an air tensioner) centering on a pin 55 fixed to a fixed member (not shown) attached to the rotating arm 54. (The position as a workbench). Numeral 53 denotes a flexible air pipe, which is branched and a blower 41 and a vacuum pump 42 are connected to each branch pipe, and a switching valve 44 for switching a pipe line is provided at a branch point. The operation as an air tensioner is the same as in the second embodiment.

The procedure for using the film bonding work table is as follows. The film 3 is stopped, and the nozzle housing 40 is rotated by 90 degrees and fixed. Connect the air pipe 53 to the vacuum side (vacuum pump 42 side)
And the vacuum pump 42 is turned on to adsorb the preceding film 3. The film 3 is cut by the cutter knife along the cutter escape groove 45b. The trailing part of the film 3 is removed. The subsequent film 3 ′ is unwound, superimposed on the preceding film 3, adsorbed on the rear half of the nozzle housing 40, and
Cut the film 3 'with a cutter knife in the same way as
The leading portion of the film 3 'is removed so that the ends of the new and old films are in contact. An operator attaches an adhesive tape to join the end of the preceding film 3 and the end of the succeeding film 3 '. The vacuum pump 42 is turned off, the nozzle housing 40 is returned to the position of the air tensioner, the film is run, and the air pipe 5
3 is switched to the blower 41 side, and the blower 41 is turned on.

[0031]

According to the automatic sheet joining apparatus of the present invention, it is not necessary to add manpower to the joining work of the old and new sheets when replacing the roll of the sheet unwinding machine. It has a configuration that can be fully automated.
In addition, the old and new sheet materials are overlapped at their ends and are pasted with double-sided adhesive tape, so the width of the adhesive tape may be narrow, and the handling of the tape is easy without any deviation of the tape direction or wrinkling. is there. In addition, the lamination with the adhesive tape can sufficiently secure the shearing force due to the adhesive force corresponding to the tension of the sheet.

Even when an air tensioner is provided after the unwinding of the sheet unwinding machine, the air suction case can be switched between the pressurized air pipe and the vacuum air pipe so that the sheet suction head is air-tensioned. By also using the head as a sheet-like material joining device that can also be used as an air tensioner, the sheet-like material line can be shortened,
The number of parts can be reduced.

Further, an air tensioner is provided after unwinding of the sheet unwinding machine so that the air nozzle housing can be switched between a pressurized air pipe and a vacuum air pipe, so that the sheet-shaped suction head can be air-tensioned. It can also be used as a head and can be rotated about 90 degrees, so that when joining sheets manually, the sheet-like object suction head is used as a work table to facilitate cutting and sticking of adhesive tape. be able to.

[Brief description of the drawings]

FIG. 1 is a side view of an automatic film joining apparatus according to a first embodiment of the present invention.

FIG. 2 is a side view showing the same film bonding step.

FIG. 3 is a side view of an automatic film joining apparatus according to a second embodiment of the present invention.

FIG. 4 is an enlarged view of the air nozzle portion.

FIG. 5 is a side view of an automatic film joining apparatus according to a third embodiment of the present invention.

FIG. 6 is a side view of a conventional automatic sheet joining apparatus.

FIG. 7 is an explanatory diagram of the operation.

FIG. 8 is a schematic diagram of an adhesive tape attaching device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 unwinder 2, 2 a unwinding shaft 3 preceding film 3 ′ succeeding film 4, 5 guide roller 7 guide roller 8 scrap winding roller 10 film suction holding means 11 suction housing 11 a cutter escape groove 20 film cutter means 21 cutter head 26 Double-sided adhesive tape application device 30 Film joining means 31 Joining head 36 Pressing roller 37 Guide roller 38 Cutter 40 Nozzle housing 41 Air blower 42 Vacuum pump 44 Switching valve

Claims (4)

[Claims] 1. A sheet-like structure in which a preceding sheet-like material unwound from one shaft of an unwinder having a plurality of unwinding shafts with adjustable braking force is joined to a subsequent sheet-like material wound on another shaft. The article joining apparatus has a suction housing that can reciprocate in a direction perpendicular to a sheet-like article traveling surface determined by a pair of guide rollers and vacuum-suctions and fixes the sheet-like article when it comes into contact with the sheet-like article. A sheet-like material suction holding unit, a sheet-like material cutter provided opposite to the sheet-like material suction holding unit with respect to the sheet-like material running surface and capable of reciprocating vertically, and a double-sided adhesive tape attaching device. Sheet-like material cutter means, a scrap take-up roller for winding the leading end side of a subsequent sheet-like material guided by another guide roller, and an oblique direction passing between the guide roller and the scrap take-up roller. And a sheet joining means provided with a sheet cutter and a sheet cutter capable of reciprocating and abutting on the sheet sucking and holding means. 2. The sheet joining apparatus according to claim 1, wherein a cutter escape groove is provided at a center of a suction surface of the suction housing of the sheet suction holding means in a direction perpendicular to the sheet running direction. Characteristic sheet joining device. 3. The sheet joining apparatus according to claim 1, wherein the air pipe of the suction housing of the sheet suction holding means is switched between pressurized air and vacuum so as to be capable of both air suction. It is used as a housing, and it is used as a sheet-like material suction holding means of the sheet-like material joining device at the time of air suction,
A sheet joining apparatus characterized in that when the air pipe is switched to a pressurized air blower to form a nozzle housing, it can be used as an air tensioner while the sheet is traveling. 4. An air tensioner for a sheet-like material unwound from an unwinder having a plurality of unwinding shafts capable of adjusting a braking force, wherein a switching valve is provided in an air pipe of a tensioner nozzle housing, and pressurization is performed. A nozzle housing for air suction that can switch between air and vacuum. At the same time, the nozzle housing can be rotated about 90 degrees around an axis parallel to the sheet and perpendicular to the running direction. An air tensioner combined with air suction, characterized in that a cutter escape groove is provided in a direction perpendicular to an object running direction, and when joining sheets by hand, the nozzle housing is rotated to facilitate the joining operation.