JPH0825676B2 - Automatic sheet butt splicing device for 2-axis turret type unwinder - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twin-screw turret type unwinder, and more particularly, to a winding end of a preceding sheet unwound by the twin-screw turret type unwinder and a full winding roll for the next unwinding. The present invention relates to an automatic butt splicing device in a two-axis turret type unwinder that automatically butts and unwinds the unwinding start end.

[0002]

2. Description of the Related Art Various devices for joining a trailing end of a preceding unwinding roll and a trailing start end of a succeeding full-rolling roll in a twin-screw turret type unwinder are provided. For example, by applying an adhesive treatment such as sticking a double-sided tape on the winding end of the next unwinding roll, temporarily temporarily fixing it so as not to loosen the winding, and when the preceding unwinding roll becomes short, Rotate at the same peripheral speed as the sheet unwinding speed in advance,
The running preceding sheet is brought into contact with a full roll, and the end portion of the full roll is attached to the preceding sheet by the adhesive tape to automatically join the sheets. When the sheets are joined together, the remainder of the preceding unwinding roll is cut off.

[0003] When such sheets are joined, there is a drawback in that the joining portion becomes a lap joint and the end where the preceding unwinding roll is cut off hangs down from the joining portion. In order to eliminate such a defect, an apparatus has been proposed in which the trailing edge of the preceding sheet and the leading edge of the succeeding sheet are butted against each other, but the apparatus is complicated.

[0004]

SUMMARY OF THE INVENTION The present invention addresses the actual situation and automatically abuts and splices the trailing end of a preceding sheet and the trailing start end of a succeeding sheet in a twin-screw turret winding machine. An object of the present invention is to provide a simple and reliable automatic sheet butt joint device for a twin-screw turret type winder.

[0005]

That is, according to the present invention which meets the above-mentioned object, a turret board is provided with two unwinding shafts, and a sheet of a preceding sheet roll mounted on one unwinding shaft is preliminarily wound. After unwinding almost all from the unwinding position, the turret board is turned 180 degrees, and the succeeding sheet of the full roll mounted on the other unwinding shaft can be unwound from the unwinding position. in unwinder, the turret surface plate, while Installation a first sheet gripping device array orthogonal to the sequence of respective its in correspondence with the two winding Dejiku,
A second sheet gripping device that reciprocates between a predetermined unwinding position proximity position and a predetermined retreat position on the running line on the running line of the running sheet that is unwound from the predetermined unwinding position and goes to the next process. If, on the edge portion of the unwinding position side of the second sheet gripping device provided with cutting blades and adhesive tape applying device together, positioned in the unwinding position prior
The first sheet gripping device corresponding to the sheet roll unwinding shaft and the second sheet gripping device that has reached the unwinding position approaching grip the end portion of the preceding sheet, and cut the sheet between both grips by the cutting device. after cutting, turning the turret plate, and grasped preceding sheet cut trailing end of the unwinding the start of the subsequent sheet to another first sheet gripping device grips corresponding to the subsequent sheet and the second sheet gripping device It is characterized in that it is configured so that the adhesive tape can be affixed to the abutting portion and the abutting portion by an adhesive tape affixing device .
It

[0006]

According to the present invention, the automatic seaming of sheets is
The procedure is as follows. First, when the preceding sheet roll is substantially unwound, the first sheet gripping device corresponding to the sheet roll grips the winding end portion of the preceding sheet on the unwinder side. Then, substantially at the same time, the second sheet gripping device moves from the retracted position to the proximity position along the sheet traveling line between the unwinder and the next process, and faces the first sheet gripping device, Hold the preceding sheet. That is, the winding end portion of the preceding sheet is gripped at the continuous position by the first sheet gripping device and the second gripping device. Then, the sheet cutting blade is actuated in a slight gap portion between the two grips to cut the preceding sheet in that portion.

Next, after the first sheet gripping device corresponding to the full roll is gripped at the unwinding start end of the full roll, the turret disc is swung to rotate the first sheet gripping device on the preceding sheet side, The position of the first sheet gripping device on the full roll side is exchanged.

Further, the second sheet gripping device again arrives at the proximity position while gripping the trailing edge of the preceding sheet cut by the cutting blade, and the first sheet gripping device again reaches the proximity position.
Face the sheet gripping device. As a result, the trailing end of the preceding sheet and the unwinding start end of the full roll are butted against each other.

Then, on the two sheet ends that are abutted, by the adhesive tape attaching device,
Adhesive tape is attached. As described above, the sheets are reliably butt-jointed.

[0010]

Embodiments of the present invention will now be described with reference to the drawings. FIG. 1 shows an outline of an automatic sheet butt joint device according to the present invention. In FIG. 1, I is a twin-shaft turret type unwinder, II is an accumulator, and III is a pinch roller device. This is the next process equipment.

In the twin-screw turret type unwinder I, 1 is a turret board, a central shaft 2 of which is pivotally supported by a machine frame 3 and which is swung about the shaft 2 by a swiveling drive device (not shown). The unwinding shafts 4 and 4'are arranged on the turret board 1 symmetrically with respect to the center axis 2, and the unwinding sheet rolls are pivotally attached to the turret board 1, respectively. Further, each of the two sheet gripping devices 5, 5 with respect to the central axis 2 is orthogonal to the arrangement of the two unwinding shafts 4, 4 ′.
′ And guide rollers 6, 6 ′ are arranged in the turret board 1.

Since the two sheet gripping devices 5 and 5'have the same structure, the structure will be described by using one device as a representative. The sheet gripping device 5 includes a sheet receiving plate 7, a sheet gripping plate 8 and a sheet end supporting plate 9. The sheet gripping plate 8 can be rotated by an actuator from the position shown by the solid line to the position shown by the chain line, and when the sheet gripping plate 8 is rotated to the position shown by the chain line, the sheet is pressed and gripped on the sheet receiving plate 7. A sheet end support plate 9 is rotatable from the solid line position shown in the drawing toward the sheet receiving plate 7, and a sheet protruding from the sheet gripped by the sheet gripping plate 8 when abutting against the sheet receiving plate 7. It is arranged to support the terminal.

Next, 10 is an adhesive tape sticking device which is mounted between the unwinder I and the accumulator II so as to be movable from a solid line position A in the drawing to a chain line position B on a slide rail (not shown). The details of the adhesive tape sticking device 10 will be described with reference to FIG. 3. Reference numeral 11 denotes an adhesive tape roll, which is mounted on the unwinding shaft 13 of the tape unwinding machine frame 12. Reference numeral 14 is a guide roller, 15 is an adhesive tape guide slit, and the tip of the adhesive tape is at a position 16 slightly protruding from the guide slit (details will be described later).

Reference numeral 17 is a tape tip holding device,
The turning arm 18 is configured so that the tip claw portion opens and closes.
Is attached to the tip of the. Further, 19 is an adhesive tape pressing device, 20 is an adhesive tape pasting roller, and the pasting roller 20 is rotatably attached to the tip of another rotating arm 21. Further, 22 is an adhesive tape cutting device.

Adhesive tape sticking apparatus 10 having the above-mentioned structure
Is disposed on the machine frame 12 of the adhesive tape sticking device, and the machine frame 12 engages with a slide rail 23 that is laid across in the width direction of the sheet, and is mounted on the slide rail 23 by an actuator (not shown). Is configured to traverse.

Next, in FIG. 1, 24 is a sheet gripping device different from the above. The sheet gripping device 24 has the same structure as the sheet gripping device 5 in the turret board 1, and although the structural description thereof is omitted, it is arranged below the adhesive tape sticking device 10. A sheet cutting blade 26 is adapted to reciprocate in the sheet width direction along the side edge 25 'of the sheet receiving plate 25 of the sheet gripping device 24. Reference numeral 27 is an actuator for reciprocating the cutting blade. In the illustrated example, a rodless cylinder is applied to the actuator, and the cutting blade is pivotally attached to the cylinder.

The sheet gripping device 24, the sheet cutting device 26, and the cutting blade reciprocating drive actuator 27, together with the sliding rails 23 on which the adhesive tape sticking device machine frame 12 is mounted, form a pair of left and right machine frames. The sheet joining apparatus IV is integrally mounted on the 28 and 28 'sideways. The machine frames 28, 28 of the sheet joining device IV are engaged with a slide rail (not shown) provided between the unwinder I and the accumulator II, and the tape applying device 10 described above is used.
At the same time, the sheet gripping device 24, the sheet cutting device 26, and the cutting blade reciprocating drive actuator 27 are moved to
And can be moved between the chain line position B.

Next, the operation of the embodiment of the present invention having the above construction and structure will be described. During the normal sheet unwinding operation, as shown in FIG. 1, the sheet roll R is mounted on the unwinding shaft 4 and the sheet S is guided by the guide roller 6 in the turret board 1.
After passing through the underside of the adhesive tape sticking device 10, it reaches the accumulator II, is unwound by the sheet feeding device F in the accumulator II, and passes through the guide roller group G in the accumulator II. It is sent to the next step III.

In the meantime, the full roll sheet roll R'for the next roll-out is mounted on the other roll-out shaft 4 ', and the end of the roll is unwound by manual work, and one sheet gripping device 5'is provided. Unfold it under the sheet receiving plate 7 '. Further, the sheet grip plate 8 '
Thus, the unrolling sheet is pressed and gripped toward the sheet receiving plate 7 ', and the sheet supporting plate 9'is rotated toward the sheet receiving plate 7', and the end of the unrolling sheet is supported.

Then, a blade is applied to the side edge 7 '' of the sheet receiving plate 7 ', the blade is manually run with the sheet supporting plate 9'as an anvil, and the end of the unwinding sheet is linearly cut to automatically cut the sheet. Prepare for splicing. Figure 4
It is enlarged and illustrated. In FIG. 4, K is a blade.

On the other hand, when the sheet roll R on the unwinding shaft 4 is running low, the sheet feeding roller device F in the accumulator II is operated at a higher speed than the next process device III to rewind the sheet, and The surplus at this time is stored in the guide roller group G in the accumulator. Further, when the remaining amount of the original roll R becomes very small, the sheet feeding device F is stopped and the sheet unwinding is temporarily stopped. During the suspension period, the sheets stored in the accumulator are fed to the next step III, so that the next step III continues the steady operation.
Since the structure and operation of the accumulator are known, detailed description thereof will be omitted.

Then, during the above-mentioned temporary interruption of the unwound sheet, automatic sheet joining, which is the main part of the present invention, is performed.
The mode will be described below. First, in the sheet joining device IV, from the position A shown by the solid line in FIG. 2 toward the unwinder I side, the sheet receiving plate 7 ′ of the sheet holding device 5 ′ and the sheet of the sheet holding device 24 in the turret board 1 The cutting blade 26 is moved to a position (a position B shown by a chain line in the figure) leaving a gap in which the cutting blade 26 can traverse with the receiving plate 25.

Subsequently, the sheet gripping devices 5'and 24 are operated to grip the sheet, and then the cutting blade 26 is traversed in the gap between the sheet receiving plates to cut the sheet S, and the sheet gripping device 24 cuts it. The sheet joining apparatus is retracted to the old position A indicated by the solid line while the rear end of the sheet is held. Then, the turret board 1 is rotated 180 degrees in the clockwise direction shown by the arrow in the figure, and the positions of the preceding sheet roll shaft 4 are exchanged, and at the same time, the positions of the preceding sheet gripping device 5 and the unwinding sheet gripping device 5'of the full roll are also changed. Replace. This state is shown in FIG.

Thereafter, when the sheet joining device is moved again toward the unwinder I to the position B indicated by the same chain line as the previous time, the sheet ends gripped by the sheet gripping devices 5'and 24 respectively project. To be combined. Further, the adhesive tape is attached by the adhesive tape attaching device 10 along the butt line.

Now, the operation of attaching the adhesive tape will be described. First, the tape tip portion 16 pulled out from the adhesive tape roll 12 is slightly projected from the tip of the tape guide slit 15. The tape tip portion 16 is gripped by the tape tip gripping device 17, the tape tip gripping device 17 is further rotated, and the adhesive tape is pulled out from the slit 15. Then, the adhesive tape spread between the tape guide slit 15 and the tape tip gripping device 17 is pressed and stuck onto the sheet by the adhesive tape pressing device 19.
As described above, the trailing end of the preceding sheet gripped by the sheet gripping device 24 and the sheet front end of the succeeding full-roll roll gripped by the sheet gripping device 5 ′ in the turret board 1 are abutted against this portion. ing.

In this state, as shown in FIG. 3, the adhesive tape pasting roller 20 is rotated and lowered from the position shown by the solid line to the position 20 'shown by the chain line, the adhesive tape is stuck on the sheet, and the tape is unwound in the left direction of the arrow shown in the drawing. The machine frame 12 is moved along the slide rail 23 from the position a indicated by the solid line in the figure to the position b indicated by the chain line. As a result, the adhesive tape can be surely applied onto the sheet by the adhesive tape applying roller 20. When this pasting is completed, the adhesive tape is cut by the tape cutting device 22, but at this time, the adhesive tape is left at a position where the sheet slightly protrudes from the tip of the tape guide slit, leaving a gripping margin for the next tape withdrawal. Disconnect. After the tape is cut, the tape unwinder frame 1
2 is moved to the position c and the trailing end of the tape is stuck on the sheet.

With the above, a series of automatic sheet joining operation is finished,
After this, each device returns to the old position and stands by for the next automatic connection.

[0028]

According to the present invention as described above, in the two-axis turret unwinder, in response to each volume out axis turret surface plate, provided with a respective first sheet gripping device,
A second sheet gripping device, a sheet cutting blade, and an adhesive tape sticking device are integrally reciprocally provided on the sheet traveling line from the unwinder to the next process to unwind the preceding sheet.
Move to the vicinity of the first sheet gripping device and unwinder corresponding to the shaft
By the second sheet gripping device, after first gripping the winding end portion of the preceding sheet, cutting the preceding sheet in both the grip between the parts by the sheet cutting blade, then after the turret plate pivoted on the side away from the unwinder Cutting end and succeeding full winding of the preceding sheet gripped by the retracted second sheet gripping device
Butt and start unwinding the fully wound roll gripped by the first sheet gripping device corresponding to the roll unwinding shaft, the abutting portion of its is obtained by such bonding with adhesive tape by the adhesive tape applying device From the two-axis turret type unwinder, the preceding sheet and the succeeding sheet are attached to the second gripping device, the cutting blade and the adhesive tape.
When moving the integrated structure of the device back and forth on the travel line
The connection is extremely efficient and accurate with simple operation .

Therefore, unlike the conventional case, the operator does not have to join the end of the preceding sheet with the end of the preceding sheet and the unwinding start end of the succeeding full-rolling roll when the unwinding of the preceding sheet is completed.
The usability of the shaft turret type unwinder is improved and the unwinding efficiency is increased.

[Brief description of drawings]

FIG. 1 is a schematic side view of an automatic sheet butt joint device in a twin-screw turret type unwinder according to the present invention.

FIG. 2 is an operation explanatory view of the sheet automatic butt joint device in the twin-screw turret type unwinder according to the present invention.

FIG. 3 is a schematic view of an adhesive tape sticking device which is a part of the sheet automatic butt jointing device in the twin-screw turret type unwinder according to the present invention.

FIG. 4 is an operation explanatory view of the automatic sheet butt joint device in the twin-screw turret type unwinder according to the present invention at the time of sheet separation.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Turret board 4, 4 ′ Unwinding shaft 5, 5 ′ Sheet gripping device 10 Adhesive tape sticking device 24 Sheet gripping device 26 Sheet cutting blade

Claims (1)

[Claims] 1. A turret board is provided with two unwinding shafts,
The sheet of the preceding sheet roll attached to one of the unwinding shafts,
After unwinding substantially all from the predetermined unwinding position, the turret board is rotated 180 degrees, and the succeeding sheet of the full roll mounted on the other unwinding shaft can be unwound from the unwinding position. in turret unwinder, said the turret surface plate, while first established the sheet gripping device array orthogonal to the sequence of respective its in correspondence with the two winding Dejiku, the predetermined unwinding position A second sheet gripping device that reciprocates between a predetermined unwinding position proximity position and a predetermined retreat position on the traveling line on a traveling line of the traveling sheet that is unwound from the next step to the next process; Of the sheet gripping device, the cutting blade and the adhesive tape attaching device are integrally provided at the end of the sheet gripping device on the unwinding position side , and the preceding sheet positioned at the unwinding position is provided .
The first sheet gripping device corresponding to the trawl unwinding shaft and the second sheet gripping device that has come to the position near the unwinding position grip the end portion of the preceding sheet, and the sheet between both grips is cut by the cutting device. After that, turn the turret board,
Butt and gripped preceding sheet cutting the rear end of another first sheet gripping device is unwinding start end and the second sheet gripping device of the subsequent sheet gripping corresponding to the following sheet, paste adhesive tape to the abutting portion sheet automatic butt splicing apparatus in the two-shaft turret type unwinder, characterized in that occupies not as construction Naru allow adhering the adhesive tape by the device.