JP3640490B2 - Winding shaft switching device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a take-up shaft switching device that is arranged in a printing machine, a coater, or the like and can switch a web between a pair of take-up shafts.
[0002]
[Prior art]
Conventionally, a take-up shaft switching device having a take-up unit and a pair of take-up shafts is arranged in a printing press or a coater. That is, the web processed by the printing machine or the coater is wound on one winding shaft, then switched to the other winding shaft and wound on the other winding shaft.
[0003]
When such a winding shaft is switched, the line may be temporarily stopped using an accumulator or the like, and the web may be switched or the web may be cut.
[0004]
[Problems to be solved by the invention]
By the way, when the winding shaft is switched, an adhesive tape is attached to the winding shaft in advance, and when the web is wound around the winding shaft, the leading end of the web is bonded to the adhesive tape and wound.
[0005]
On the other hand, there is a case where the adhesive tape is not attached to the take-up shaft, and the web is taken up by winding the tip of the web around the take-up shaft.
[0006]
As described above, the take-up shaft is pre-attached with an adhesive tape and the take-up shaft is not attached with an adhesive tape, but the structure of the take-up shaft switching device differs depending on whether the take-up shaft has an adhesive tape. ing.
[0007]
The present invention has been made in consideration of such points, and an object thereof is to provide a winding shaft switching device capable of smoothly switching a web regardless of the presence or absence of an adhesive tape on the winding shaft. To do.
[0008]
[Means for Solving the Problems]
The present invention has a near roll and a touch roll, and a winding unit that sequentially feeds the web outward through the near roll and the touch roll, a turnable turret disposed so as to be close to the winding unit, and a turret A pair of winding shafts fixed to the touch roll and freely contactable with the touch roll, and arranged on a straight line that is fixed to the turret and orthogonal to a straight line connecting the pair of winding shafts. A pair of guide roller portions that rotate together with the shaft, a movable arm that is swingably disposed in the vicinity of the winding unit, and moves the web to the vicinity of the winding unit; and first and second cutters provided in the winding unit; The pair of winding shafts comprises an old winding shaft on which a web is wound and a new winding shaft, and the guide roller portion may be separated from the fixed roller and the fixed roller. When the pair of winding shafts is without adhesive tape, the turret turns 180 °, the old winding shaft leaves the winding unit, and the new winding shaft comes to the winding unit side. When the web fed from the take-up unit is wound around one guide roller, the take-up unit approaches the new take-up shaft and the touch roll comes into contact with the new take-up shaft, and the take-up unit is moved by the movable arm. When the web between the guide roller and the one guide roller is brought to the winding unit side, the web is cut by the first cutter, and the pair of winding shafts have adhesive tape, the turret rotates 180 ° and the old When the take-up shaft moves away from the take-up unit and the new take-up shaft comes to the take-up unit side and the web fed from the take-up unit is wound around one guide roller, the movable roller is separated from the fixed roller. Extend to the winding unit With a winding shaft switching device, characterized in that the winding unit is touch roll close to Aramaki shaft cuts the web by contact with the second cutter to Aramaki shaft.
[0009]
According to the present invention, when switching between the pair of winding shafts, first, the pair of winding shafts are turned by the turret, and a new winding shaft comes to the winding unit side. Thereafter, when there is no adhesive tape on the winding shaft, the web is moved to the vicinity of the winding unit by the movable arm, and the web is cut by the first cutter. When there is an adhesive tape on the take-up shaft, the movable roller of the guide roller portion located below extends to the take-up unit side to move the web below the take-up unit, and the web is cut by the second cutter.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. 1 to 15 are views showing an embodiment of a winding shaft switching device according to the present invention.
[0011]
First, the winding shaft switching device will be described with reference to FIGS. As shown in FIGS. 1A and 1B, the winding shaft switching device includes a winding unit 3 having a touch roll 6, a near roll 7, and a guide roll 9 that adjust the winding stiffness of the web 15, and the winding unit 3. And a pair of winding shafts 1a and 1b fixed to a rotating turret 12 and arranged so as to be in contact with the touch roll 6.
[0012]
Of these, the winding unit 3 feeds the web 15, and the web 15 is wound around the winding shafts 1 a and 1 b by the touch roll 6 from the guide roll 9 through the near roll 7.
[0013]
The turret 12 is provided with a pair of guide roller portions 2 and 2 at positions orthogonal to the pair of winding shafts 1a and 1b. Further, below the winding unit 3, a movable arm 4 for moving the web 15 to the winding unit 3 side is swingably provided.
[0014]
A guide roll 10 for guiding the web 15 is provided at the tip of the movable arm 4, and a nip roll 8 for pressing the web 15 against the winding shafts 1 a and 1 b is attached in the vicinity of the guide roll 10. ing.
[0015]
By the way, each of the pair of guide roller portions 2 and 2 has a fixed roller 2a and a movable roller 2b movable with respect to the fixed roller 2a. The movable roller 2b extends along a guide 14 extending from the fixed roller 2a. It is supposed to move.
[0016]
A first cutter 5a and a second cutter 5b are provided at the upper and lower portions of the winding unit 3, respectively. The first cutter 5 a and the second cutter 5 b are fixed to the rodless cylinder 11, and move in the width direction of the web 15 when the web 15 is stopped to cut the web 15.
[0017]
Next, the operation of the present embodiment having such a configuration will be described.
First, the start of winding of the web 15 by the winding shafts 1a and 1b will be described. The web 15 is fed from a printing machine or coater (not shown) to the winding unit 3 and then wound around the pair of winding shafts 1a and 1b. In this case, if an adhesive tape is previously attached to the take-up shafts 1a and 1b, the tip of the web 15 can be reliably adhered by the adhesive tape, and the take-up action by the take-up shafts 1a and 1b is reliably performed. be able to.
[0018]
On the other hand, when the adhesive tape is not attached to the winding shafts 1a and 1b, it is necessary to wind the tip of the web 15 around the winding shafts 1a and 1b. However, there is an advantage that the web 15 around the winding shafts 1a and 1b is less likely to be uneven as much as there is no adhesive tape.
[0019]
In the present embodiment, the operation when the take-up shafts 1a and 1b do not have an adhesive tape will be described with reference to FIGS.
[0020]
First, as shown in FIG. 2, the web 15 is wound around the old winding shaft 1b with a predetermined winding diameter (see FIG. 2). In this case, the touch roll 6 of the winding unit 3 comes into contact with the web 15 of the old winding shaft 1b and winds the web 15 fed from the guide roll 9 through the near roll 7 around the old winding shaft 1b. The old winding shaft 1b is rotated.
[0021]
Next, as shown in FIG. 3, the winding unit 3 moves away from the web 15 around the old winding shaft 1b. Next, the turret 12 turns 180 ° counterclockwise, and the new winding shaft 1a comes to the winding unit 3 side (FIG. 4). At this time, the web 15 from the winding unit 3 is wound around the guide roller portion 2 positioned below.
[0022]
Next, as shown in FIG. 5, the winding unit 3 approaches the new winding shaft 1a (FIG. 5), and the touch roll 6 of the winding unit 3 comes into contact with the new winding shaft 1a (FIG. 6).
[0023]
Next, as shown in FIG. 7, the movable arm 4 swings counterclockwise and the web 15 is brought to the winding unit 3 side by the guide roll 10 of the movable arm 4.
[0024]
Next, as shown in FIG. 8, the nip roll 8 of the movable arm 4 presses the web 15 against the new winding shaft 1a. Next, the entire line including the winding unit 3 and the pair of winding shafts 1a and 1b is stopped, and the web 15 provided in the winding unit 3 and stopped by the first cutter 5a as shown in FIG. Cut in the direction.
[0025]
After that, the new winding shaft 1a is slightly rotated reversely by the touch roll 6, and air is blown to the tip of the web 15 on the new winding shaft 1a side, so that the folding of the tip of the web 15 around the new winding shaft 1a is corrected. Is done. Next, as shown in FIG. 10, the operation of the winding unit 3 is restarted, and the new winding shaft 1 a is restarted by the touch roll 6 of the winding unit 3. At the same time, as shown in FIG. 11, the nip roll 8 moves away from the new take-up shaft 1a, and the movable arm 4 swings in the clockwise direction to complete the switching operation of the take-up shafts 1a and 1b.
[0026]
Next, the operation when the adhesive tape is attached to the winding shafts 1a and 1b will be described with reference to FIGS. When the tape is attached, the operation until the turret 12 turns is substantially the same as the operation when the tape shown in FIGS. 2 to 4 is not attached.
[0027]
Next, when the turret 12 turns and the new winding shaft 1a comes to the winding unit 3 side, the movable roller 2b of the guide roller portion 2 positioned below is wound along the guide 14 as shown in FIG. It extends to the unit 3 side. Next, as shown in FIG. 13, the winding unit 3 approaches the new winding shaft 1a side. In this case, the web 15 from the take-up unit 3 extends substantially vertically toward the lower side of the take-up unit 3 by the movable roller 2b of the guide roller portion 2 located below, so that the web 15 adheres to the new take-up shaft 1a. It does not adhere to the tape. Thereafter, the entire line including the winding unit 3 and the pair of winding shafts 1a and 1b is stopped.
[0028]
Next, as shown in FIG. 14, the touch roll 6 of the winding unit 3 comes into contact with the new winding shaft 1a. Thereafter, the web 15 is cut by the second cutter 5b, and then the new winding shaft 1a is slightly rotated backward by the touch roll 6, and the tip of the web 15 is bonded to the adhesive tape of the new winding shaft 1a. In this way, the folding of the tip of the web 15 is corrected, and then the new winding shaft 1a is rotated by the touch roll 6 of the winding unit 3, and the switching action of the winding shafts 1a, 1b is completed.
[0029]
As described above, according to the present embodiment, it is possible to reliably and smoothly perform the switching operation of the winding shaft between the pair of winding shafts 1a and 1b regardless of the presence or absence of the adhesive tape.
[0030]
【The invention's effect】
As described above, according to the present invention, regardless of whether the adhesive tape is attached to the pair of winding shafts, the switching operation of the winding shaft between the pair of winding shafts can be performed reliably and smoothly. it can.
[Brief description of the drawings]
FIG. 1 is a diagram showing an embodiment of a take-up shaft switching device according to the present invention.
FIG. 2 is a diagram showing an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 3 is a view showing the operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 4 is a diagram illustrating an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 5 is a diagram showing an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 6 is a diagram showing an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 7 is a view showing an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 8 is a diagram showing an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 9 is a view showing the operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 10 is a diagram illustrating an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 11 is a diagram illustrating an operation of the take-up shaft switching device when the take-up shaft does not have a tape.
FIG. 12 is a diagram showing an operation of the take-up shaft switching device when the take-up shaft has a tape.
FIG. 13 is a diagram showing the operation of the take-up shaft switching device when the take-up shaft has a tape.
FIG. 14 is a diagram showing an operation of the take-up shaft switching device when the take-up shaft has a tape.
FIG. 15 is a diagram showing the operation of the take-up shaft switching device when the take-up shaft has a tape.
[Explanation of symbols]
1a, 1b Winding shaft 2 Guide roller 2a Fixed roller 2b Movable roller 3 Winding unit 4 Movable arm 5a First cutter 5b Second cutter 12 Turret 15 Web

Claims (1)

A winding unit having a near roll and a touch roll, and sequentially feeding the web outward through the near roll and the touch roll;
A swivelable turret arranged so as to be close to the winding unit;
A pair of winding shafts that are fixed to the turret and are capable of contacting the touch roll;
A pair of guide roller portions fixed on the turret and arranged on a straight line perpendicular to a straight line connecting the pair of winding shafts, and swiveling with the pair of winding shafts by turning the turret;
A movable arm that is swingably disposed in the vicinity of the winding unit and moves the web to the vicinity of the winding unit;
A first and a second cutter provided in the winding unit;
A pair of winding shafts consists of an old winding shaft on which a web is wound and a new winding shaft,
The guide roller section is composed of a fixed roller and a movable roller that can be separated from the fixed roller.
When the pair of take-up shafts does not have adhesive tape, the turret turns 180 °, the old take-up shaft is released from the take-up unit, and the new take-up shaft comes to the take-up unit side and is sent out from the take-up unit. When the web is wound around one guide roller, the take-up unit approaches the new take-up shaft and the touch roll comes into contact with the new take-up shaft, and the movable arm moves between the take-up unit and one guide roller. Bring the web in between to the winding unit, cut the web with the first cutter,
When the pair of take-up shafts has adhesive tape, the turret turns 180 °, the old take-up shaft leaves the take-up unit, the new take-up shaft comes to the take-up unit side, and is sent out from the take-up unit. When the web is wound around one guide roller, the movable roller is moved away from the fixed roller and extends toward the winding unit, and the winding unit approaches the new winding shaft and the touch roll is newly wound. A winding shaft switching device, wherein the web is cut by a second cutter in contact with the shaft.

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