JP2570834B2 - Web supply device and web supply method - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a feeding device for feeding a roll of paper to a processing machine such as a printing press or a laminator.

[Conventional technology]

As shown in FIGS. 13 to 15, a conventional kind of web feeder 1 includes rolls a,
an arm 2 to which b is attached, and a paper feed cutter 3 for connecting the paper being supplied to the paper not supplied at the time of splicing, and cutting the old paper (the paper supplied before this connection) at the time of connection. It is provided with.

The arm 2 has roll mounting portions 2a and 2b at symmetric positions about the rotation shaft portion 20, and the roll mounting portions 2a and 2b
The rolls a and b are detachably attached to 2b. And feeding the web A to the processing machine while rotating one of the feeding rolls, for example, a feeding roll a (hereinafter, abbreviated as an old roll) a counterclockwise as viewed from the side as shown in the figure. When the amount of the paper roll A of the old roll a becomes small (the time point is determined by the control part built in the supply device from the roll length of the roll paper, the number of rotations of the roll detected by the roll mounting unit, and the like). ), The arm 2 rotates clockwise as viewed from the side to move an unsupplied roll (hereinafter abbreviated as a new roll) b to the regular paper feed position side and to retract the old roll a. .

A connecting means c formed by applying an adhesive or the like is provided on the start surface of the roll paper in the new roll, and the roll paper B of the new roll b reaching the regular paper feed position is being supplied from the old roll a. To be connected via the connection means c. This connection is made by the operation of the paper feed cutter 3.

As shown in FIG. 13, the paper feed cutter 3 has a blade (having a length extending in the width direction of the web) 31 at the tip of an arm 30 rotatably pivoted, and a pressing roller. 32 is provided so as to be rotatable, and is rotatable toward the lower side of the new roll that has reached the regular paper feeding position. For example, when the new roll b reaches the regular supply position, the pressing roller 32 of the paper feed cutter 3 comes into contact with the web A traveling below the new roll b from below, and travels via the connection means c. Web paper A and Web paper B are connected.
When the pressing roller 32 comes into contact, the blade 31
(The old roll) and cuts the web A instantly.

After the web A is cut, the web B is supplied from the new roll b, and during this time, the roll is replaced at the roll mounting unit 2a.

Thereafter, the roll is switched from the old roll with a reduced number of rolls to the new roll as described above, and the paper supply to the processing machine is continued.

In the drawing, reference numeral 4 denotes a guide roller disposed symmetrically from the rotary shaft 20 to the side of the arm 2. The guide roller 4 runs when the new roll reaches a regular paper feed position. This guides the rolled paper so as to contact the new roll at an appropriate angle.

[Problems to be solved by the invention]

In the above-described conventional supply device, the two rolls rotate in the same direction in a state where the winding direction of the web is the same, and the connection of the web is performed by the contact of the pressing roller from one side (below).

By the way, in the current roll, of the front and back surfaces of the web, the specific one side is not always required to have the required suitability (for example, printability), that is, the surface facing the outer side of the roll is appropriate. It was uncertain whether the surface would be correct or the surface facing inward would be the proper surface.

On the other hand, one side selected from the front and back sides of the roll paper of the new roll must always be overlapped on the installation side of the paper feed cutter so that it faces in the same direction as the appropriate surface of the roll paper (the one being supplied) of the old roll. In some cases, the front and back surfaces of the roll paper of the new roll must be reversed.

However, the method of inverting the web is to reverse the front and back surfaces of the mounted new roll via a turn bar, or to reverse the front and back surfaces before mounting the new roll on the supply device. There is no other way to fix it. In addition, in the method using the turn bar, when the roll paper of the new roll is inverted and connected, it is necessary to stop the processing machine side once and pass the roll paper again through the turn bar. Certain art papers, coated papers, and the like may cause the turn bar to rub, which causes peeling of the upper surface processing layer, causing a problem that the printing ink is not uniformly applied. The method of rewinding the paper roll takes time and labor to increase the manufacturing cost, and furthermore, grasps whether or not it is necessary to rewind all of the many rolls that can be used in other printing lines. In consideration of the actual operation, there is also a problem that rewinding immediately before the mounting of the supply device is not enough in time.

Therefore, it is an object to reverse the front and back of the web without stopping the web supply device itself and the processing machine, and to perform the splicing without damaging the front and back of the web. Was.

[Means for solving the problem]

The present invention has been made in view of the above problems,
Rolls that are rotatably supported in forward and reverse rotations, and rolls, each of which is wound around a roll paper at a symmetrical position about the rotation shaft, are detachably mounted and can be rotated in forward and reverse directions. The arm that rotates so as to move in the paper position direction, and the roll paper that is being supplied at the time of splicing, are pressed against the connection means at the paper supply end of the unsupplied roll located at the regular paper supply position, and And a pair of paper feed cutters for cutting the web, and one of the paper feed cutters is provided so as to be able to contact the web running above the unsupplied roll positioned at the regular paper feed position from above, and the other is provided. Feeding cutter,
A web feeder is provided which is provided so as to be able to contact the web running below the unsupplied roll located at the regular paper feed position from below. The arm in which the roll on which the paper roll is wound at each of the symmetrical positions is removably mounted in a reversible and detachable manner is rotated in the same direction as the winding direction of the unsupplied roll,
And the unsupplied roll is rotated in the feeding direction so that the outer peripheral speed thereof becomes the feed speed, and when the unsupplied roll reaches the regular supply position, the connection positioned on the start end surface of the rolled paper of the unsupplied roll. Through the means, the roll paper being supplied from one roll and the roll paper of the unsupplied roll are moved between the pair of paper feed cutters rotating in opposite directions toward the regular supply position side. By providing a method of feeding a web, wherein the web is fed by being connected with a paper feed cutter located on the web side and cutting the web being fed.
This is to solve the above problem.

(Operation)

In the present invention, the upper area is directed downward according to the selected one side according to the processing machine side conditions (for example, so that the printing-appropriate surface of the printing paper supplied to the printing machine faces the plate surface or the printing ink transfer cylinder surface). For web paper running in the state,
When one side of the rolled paper is spliced with the selected roll of the new roll (hereinafter referred to as a normal feed), the winding direction and the rotating direction of the new roll are the winding direction and the rotating direction of the old roll. The arm rotates in the same direction as the winding direction of the new roll so that the new roll moves toward the back side of the web being pulled out from the old roll. The connection is made by a paper cutter, and cutting is performed on the upstream side in the supply direction of the connection portion. Then, when splicing a web of a new roll with an appropriate side opposite to a selected one side (hereinafter, referred to as an appropriate side) of the old roll of paper (hereinafter, referred to as a reverse feed). The arm and the new roll are wound in such a way that the winding direction and the rotation direction of the new roll are opposite to the winding direction and the rotation direction of the old roll, and the arm moves so that the new roll moves toward the front side of the paper roll of the old roll. Rotating in the same direction, connection and disconnection are performed by a paper feed cutter located on the side of the web being supplied.

〔Example〕

Next, the present invention will be described in detail based on an embodiment shown in FIGS. In addition, the same reference numerals are given to portions having the same configuration as the conventional example, and the description thereof is omitted.

That is, the web supply device 1 includes an arm 2 pivotally supported in the rotating shaft portion 20 so as to be able to rotate forward and backward, and a pair of paper feed cutters.
3,5. The arm 2 is configured such that a roll is detachably mounted and can be rotated forward and backward at a roll mounting portion 2a, 2b at each end.

Similarly to the paper feed cutter 3, the paper feed cutter 5 has a blade 51 at the tip of an arm 50 rotatably pivoted, and has a press roller 52 freely rotatable, and is located at a regular paper feed position. The same operation as the paper feed cutter 3 is performed in which the web A being supplied is pressed against the connection means c at the paper feed end of the new roll b to cut the web A. The operation of the paper feed cutters 3 and 5 is performed selectively. When the new roll b reaches the regular paper feed position from the back side with respect to the running paper roll A, the paper feed cutter 5 is moved to the paper roll A. When the new roll b reaches the regular paper feeding position from the front side with respect to the running web A, the paper feed cutter 3 performs an operation of coming into contact with the web A from below. is there.

Next, the operation of the web supply device will be described, for example, in the case where paper is fed to the printing press side with the lower surface as an appropriate surface.

When the front surface of the normal feed and the roll paper is an appropriate surface, the old roll a mounted on the roll mounting portion 2a of the arm 2 of the roll paper supply device 1 is counterclockwise when viewed from the side (supplying direction is right). To supply the web A having a proper surface. When the new roll b is mounted on the arm 2 by the normal feed, the new roll b is mounted on the roll mounting portion 2b so that the winding direction of the web B is clockwise, similarly to the old roll a. It is provided so as to rotate around (see FIG. 1). In the rotation direction (unwinding direction) of the roll and the rotation direction of the arm, the counterclockwise direction is indicated by an arrow i and the clockwise direction is indicated by an arrow ii, and the direction opposite to the roll rotation direction is the winding direction of the web. become.

When the remaining amount of the web A of the old roll a becomes small,
The arm 2 rotates clockwise ii about the rotation shaft 20 (see FIG. 2). When the new roll b reaches the regular paper feed position while rotating so that its outer peripheral speed becomes the same as the feed speed of the old roll, the paper feed cutter 3 rotates toward the web A on which the paper feed cutter 3 is traveling. Web A and new roll b
(See FIG. 3), and the web A is cut by the blade 31 at the leading end.
Is fed to the processing machine side.

In the case where the back side of the normal feed and the web is an appropriate side, the old roll a mounted on the roll mounting section 2a of the arm 2 of the web feeder 1 rotates clockwise ii to remove the web A having the back side as an appropriate side. Supplying. When the new roll b is mounted on the arm 2 by the normal feed, the new roll b is mounted on the roll mounting portion 2b so that the winding direction of the web B is counterclockwise as in the case of the old roll a. It is provided so as to rotate around ii (see FIG. 4).

When the remaining amount of the web A of the old roll a becomes small,
The arm 2 rotates counterclockwise i (see FIG. 5). When the new roll b reaches the regular paper feed position while rotating so that the outer peripheral speed thereof becomes the same as the feed speed of the old roll, the paper feed cutter 5 rotates toward the web A on which the paper feed cutter 5 is traveling. The web A is connected to the web B of the new roll b (see FIG. 6), and at the same time, the web A is cut by the blade 51 at the tip, and thereafter the web B from the new roll b is fed to the processing machine side. .

Reverse feed, when the front surface of the roll paper of the old roll and the back surface of the new roll are appropriate surfaces, the old roll a mounted on the roll mounting portion 2a of the arm 2 of the web supply device 1 rotates counterclockwise i, The web A having the proper surface is supplied. When the new roll b is mounted on the arm 2 by reverse feed, the new roll b is mounted on the roll mounting portion 2b so that the winding direction of the web B is counterclockwise, contrary to the old roll a. It is provided so as to rotate clockwise i (see FIG. 7).

When the remaining amount of the web A of the old roll a becomes small,
The arm 2 rotates counterclockwise i (see FIG. 8). When the new roll b reaches the regular paper feed position while rotating so that the outer peripheral speed thereof becomes the same as the feed speed of the old roll, the paper feed cutter 5 rotates toward the web A on which the paper feed cutter 5 is traveling. The web A is connected to the web B of the new roll b (see FIG. 9), and at the same time, the web A is cut by the blade 51 at the tip, and thereafter the web B from the new roll b is fed to the processing machine side. .

Reverse feed, when the back surface of the roll paper of the old roll and the front surface of the new roll are appropriate surfaces The old roll a mounted on the roll mounting portion 2a of the arm 2 of the roll paper supply device 1 rotates clockwise ii and the back surface Supplies the web A having a proper surface. When the new roll b is mounted on the arm 2 by reverse feed, the new roll b is mounted on the roll mounting portion 2b so that the winding direction of the web B is clockwise, contrary to the old roll a. It is provided so as to rotate around i (see FIG. 10).

When the remaining amount of the web A of the old roll a becomes small,
The arm 2 rotates clockwise ii (see FIG. 11). When the new roll b reaches the regular paper feed position while rotating so that its outer peripheral speed becomes the same as the feed speed of the old roll, the paper feed cutter 3 rotates toward the web A on which the paper feed cutter 3 is traveling. The web A and the web B of the new roll b are connected (see FIG. 12), and the web A is
Is cut, and thereafter, the web B from the new roll b is fed to the processing machine side.

In the above-described embodiment, the case where the lower surface is fed from the web supply device as an appropriate surface in order to satisfy the condition on the processing machine side has been described. Is carried out in the same manner except that the sheet is fed as a proper surface.

In addition, in this web feeder, the new roll is mounted on the roll mounting unit so that the proper surface orientation when the new roll paper is fed out in the paper feeding direction is the same as the proper paper feeding direction. Then, simply input and set various conditions (such as the appropriate surface position of the old roll paper and the appropriate surface position of the new roll paper) to the control unit that controls the operation of the arm and the operation of the roll mounting unit. Is provided so that the paper splicing is automatically performed by the control of.

〔The invention's effect〕

As described above, according to the present invention, the web feeder is rotatably supported in a forward / reverse direction, and the rolls each wound with the web at a symmetrical position about the rotation shaft portion are detachable and forward / reverse. An arm that is rotatably mounted and rotates so as to move unrolled rolls in the direction of the regular paper feed position during splicing. A pair of paper feed cutters that press against the connecting means of the paper feed end to cut the paper roll from the roll being supplied, and one of the paper feed cutters
The other paper feed cutter is provided so as to be able to abut from above on the paper roll running above the unsupplied roll located at the regular paper feed position, and the other paper feed cutter travels below the unsupplied roll located at the regular paper feed position. Since it is provided so as to be able to abut from below, the paper roll can be spliced without limiting the new roll that can be mounted, without using a turn bar or performing rewinding, and there is no need to stop the processing machine. In addition, the arm on which the roll wound with the paper roll is symmetrically positioned around the center rotation shaft portion of the arm so that the roll can be normally and reversely rotated and detachably mounted is rotated in the same direction as the winding direction of the unsupplied roll, And the unsupplied roll is rotated in the feeding direction so that the outer peripheral speed thereof becomes the feed speed, and when the unsupplied roll reaches the regular supply position, the connection located at the start surface of the web of the unsupplied roll is connected. Through the means, the paper roll being supplied from one roll and the paper roll of the unsupplied roll are separated from each other by a pair of paper feed cutters rotating in opposite directions toward the regular supply position side. Since the web paper being supplied is cut by being connected by the paper feed cutter located on the web side, it can be used when feeding the web in the direction in which the appropriate side of the web being fed and the new roll are fed in the paper feeding direction. If the appropriate surface faces the same direction, that is, if the appropriate surface is directed downward under the paper feeding conditions, the appropriate surface of the new roll faces downward when the web is fed from the new roll in the paper feeding direction. In this way, the new roll can be mounted on the roll mounting portion, and the old paper can be continuously used, thereby achieving an effect excellent in practicality.

[Brief description of the drawings]

FIGS. 1 to 3 are explanatory views showing splicing when the front surface of the web is an appropriate surface in a normal feed according to an embodiment of the present invention, and FIGS. 4 to 6 are web feeds in a normal feed according to an embodiment of the present invention. FIGS. 7 to 9 show reverse splicing in one embodiment in which the front surface of the old roll and the back surface of the new roll have the proper surface. FIG. 10 to FIG. 12 are explanatory diagrams showing the splicing when the back surface of the old roll roll paper and the front surface of the new roll are appropriate surfaces in reverse feed in one embodiment, FIG. 13 to FIG. Is an explanatory view showing a conventional example. 1 roll paper feeder 2 arm 2a, 2b roll mounting section 3,5 paper feed cutter a roll being supplied (old roll) b roll not supplied (new roll) A … Web paper (old roll) B …… Web paper (new roll)

Claims (2)

(57) [Claims] 1. A roll which is rotatably supported in forward and reverse rotations and has rolls each wound with a wrapping paper at a symmetrical position with respect to a rotating shaft portion, which is detachably and rotatably mounted so as not to be supplied during splicing. The arm that rotates so as to move the roll in the direction of the regular paper feed position, and the roll paper being supplied at the time of splicing, are pressed against the connection means at the paper feed end of the unsupplied roll located at the regular paper feed position, A pair of paper feed cutters for cutting the paper roll from the roll being supplied, wherein one of the paper feed cutters can be contacted from above with a paper roll running above an unsupplied roll located at the regular paper feed position. Wherein the other paper feed cutter is provided so as to be able to abut from below on a web running below an unsupplied roll located at a regular paper feed position. 2. An arm in which rolls, each of which has a roll of paper wound at a symmetrical position about a central rotation shaft portion of the arm, are removably and removably mounted in the same direction as the winding direction of an unsupplied roll. And the unsupplied roll is rotated in the unwinding direction so that the outer peripheral speed thereof becomes the feed speed. When the unsupplied roll reaches the regular supply position, the starting surface of the roll paper of the unsupplied roll is rotated. Of the pair of paper feed cutters rotating in the opposite directions toward the regular supply position between the paper being supplied from one of the rolls and the paper of the unsupplied roll via the connection means located at A method for feeding a roll of paper, wherein the roll is connected by a paper feed cutter located on the side of the roll of paper being supplied, and the roll of paper being supplied is cut.