JPH08231090A - Cutting device for surface skin of rolled paper - Google Patents

Abstract

PURPOSE: To prevent the breakage of a rolled paper surface skin being clue to the sticking position of an adhesive tape by attaching a black surface detecting piece abutting against the outer periphery of the side end of a rolled paper at the adjacent position of a spatula and a knife, and a light quantity sensor which is opposite to the detecting piece and detects its insertion between a surface skin and an inner layer paper, to a cutter moving device. CONSTITUTION: The side end on a surface side of a rolled paper is detected on the quantity of reflected light varied by inserting a detecting piece 22 under the side end of the tip part of a surface skin. The surface of the detecting piece 22 stricken by the light of a light quantity sensor 21 is blackened so that the quantity of reflected light may be sharply varied. The front and back detecting pieces 22 are abutted near the side end of the rolled paper 24 by an air cylinder 23, and when the rolled paper 24 is rotated in the inserting direction of the detecting piece 22, the detecting piece 22 advances between the surface skin and an innerpacked paper. The rolled paper 24 is rotated from a detected side end position in the same direction as at detecting time to a position where the length in a circumferential direction of the rolled paper 24 of an adhesive tape is cleared, and then the spatula 8 and the knife 9 are inserted for cutting the surface skin, and thus the breakage of the rolled paper being due to the adhesive tape is not caused.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wound paper skin cutting device applied to an automatic wound paper tailoring device (hereinafter referred to as SPR).

[0002]

2. Description of the Related Art FIGS. 3 and 4 show a wound paper skin cutting device and a cutter moving device thereof installed in a conventional SPR.
In FIG. 3, the web cover skin cutting device 1 includes a bracket 3a, 3b fixed to a substrate 2 and a bearing 4 moving along guide shafts 5a, 5b mounted between the brackets 3a, 3b.
An air cylinder 7 provided between the bearing 4 and the bracket 3b; a spatula 8 and a knife 9 fixed to the bearing 4 via the bracket 6; The guide bar 14 is composed of a roller 13 and is fixed to the bosses 2a and 2b of the substrate 2.
The substrate 2 is moved forward and backward by the air cylinder 18 along a and 14b. Further, in FIG. 4, the bracket 17 to which the air cylinder 18 of the cutter moving device 16 is attached is mounted between the pair of frames (not shown) of the SPR along the pair of guide bars 19 by the screw shaft 20. Move in the paper axis direction (arrow). Both ends of the pair of guide bars 19 are fixed to a connecting member (not shown) fixed to the pair of frames, and the screw shaft 20 is driven by a driving device (motor or the like, not shown) attached to the connecting member. Rotate.

Next, as shown in FIG. 5, there are various shapes of the tip of the skin 25 of the web 24, and both side ends 2 of the skin 2 are axially arranged.
5'is removed and adhesive tape 27 is attached at several places, and the tip of the skin 25 is attached to the outer peripheral surface of the web 24.
The paper wrapper 24 of FIG.
In order to cut the outer skin 25, the outer skin cutting device 1 retracted to the standby position by the air cylinder 18 is moved to the cutter moving device 1.
At 6, the paper is moved in the axial direction of the paper roll and stopped by the existing means such as a sensor at a position (FIG. 3) separated by a distance D from the side surface of the paper roll on which the suction position of the suction port 12 is attached. Next, when the skin-cutting device 1 advances to the position P by the air cylinder 18 and stops, the web 24 retracts and pushes the rollers 13 back on the outer peripheral surface of the web. By pushing back, a position sensor (not shown) built in the air cylinder 18 is activated, and the web 24 is stopped at the skin cutting position Q. In this state, the suction port 12 sucks up a portion of the skin tip close to one side. The skin 25 generated at this time and the inner layer paper 26 in contact with the skin 25
The spatula 8 and the knife 9 that move together with the bearing 4 that moves in the axial direction in the air cylinder 7 are inserted into the clearance S between After insertion, the suction port 12 stops sucking, and the cutter moving device 1
6 is moved in the axial direction by the screw shaft 20 and the spatula 8 is used to move the skin 2
5 is separated from the inner layer paper 26, and the skin 25 is cut by the knife 9 which moves together with the spatula 8.

However, in such a device,
The outer skin 25 of the paper roll and the inner layer paper 26 adjacent to the outer skin 25
When cutting the epidermis 25 with the knife 9 that moves together with the spatula 8 inserted between and, when the knife 9 comes to the position where the adhesive tape 27 is attached, the cutting resistance sharply increases, and the epidermis 25 is shown in FIG. 28 along the side of the adhesive tape 27
Occurs, and this tear 28 advances over the entire width of the epidermis and finally breaks. Therefore, in order to obtain a normal cut, the cutting must be redone. Further, if the suction port 12 is located at the position where it is in contact with the tip of the skin (hereinafter referred to as semi-suction), air may be sucked from between the tip of the skin 25 and the inner layer paper 26, and sufficient suction may not be performed, resulting in a suction failure.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been proposed in view of the above circumstances, and prevents tearing due to the position where the adhesive tape is attached to the outer surface of the paper roll, and prevents suction failure due to semi-suction. An object of the present invention is to provide a wound paper skin cutting device.

[0006]

To this end, according to the present invention, a spatula and a knife are attached to a substrate so as to be movable in the axial direction of the web, and a suction port is provided at the tip of the spatula and a knife so as to be movable in a direction orthogonal to the axial direction of the web. Is attached, the spatula is inserted between the surface of the paper roll and the inner layer paper inside the paper, and the substrate is moved in the axial direction of the paper roll by the cutter moving device, and the tip end is attached with adhesive tape. In a device for cutting with a knife, the cutter moving device is in contact with the side edge outer peripheral surface of the web at a position near the spatula and the knife. A light quantity sensor for detecting insertion is attached.

[0007]

In the paper-skin cutting device of the present invention, the skin side edge is detected by the amount of reflected light that changes when the detection piece is inserted below the side edge of the skin tip portion. The surface of the detection piece on which the light of the light quantity sensor strikes is black so that the quantity of reflected light changes significantly. When the front and rear detection pieces are brought into contact with the side edges of the web and the web is slowly rotated in the direction in which the detection piece is inserted, the detection piece picks up the outer skin and enters between the outer skin and the inner layer paper. From the side edge position detected in this way, in the same direction as at the time of detection, rotate the paper roll to a position that clears the circumferential length of the paper roll of the adhesive tape, and insert a spatula and a knife to cut the skin, No tearing occurs with the adhesive tape. Further, since the detecting piece and the light amount sensor are attached to the cutter moving device, the detecting piece and the light amount sensor can be freely moved to the vicinity of the end of the web according to the width of the web.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a paper wrapper skin cutting device of the present invention will be described with reference to FIG. 1 (A), a plan view of the device, FIG. 1 (B), a side view of the cutter moving device and FIG. Then, in FIGS. 1A and 1B, reference numerals 1 to 20 denote the same members as those in FIGS. 3 and 4, and the light amount sensor 21 is attached to the cutter moving device 16 by the support base 21 ′ and the air cylinder 23. A front surface black detection piece 22 that moves back and forth is attached so that the light from the light amount sensor 21 strikes the black surface of the detection piece 22. In order to detect the side edge of the front end of the skin 25 of the paper roll 24 mounted on the SPR by the light quantity sensor 21 and the detection piece 22, the cutter quantity moving device 16 moves the light quantity sensor 21 and the detection piece 22 to the side edge of the web paper 24. Then, the air cylinder 23 moves the detection piece 22 forward, and the outer peripheral surface 24 ′ of the side edge of the paper roll 24 ′.
(Fig. 2 (A)). Then, the paper roll 24 is rotated in the direction (arrow) in which the detection piece 22 hits the tip of the skin 25.

When the detection piece 22 comes into contact with the skin-side end 25 ', it is attached so as to slide under the skin-side end 25' as shown in FIG.
5'is pushed to enter between the rolled-up skin 25 and the inner layer paper 26. When entering, the light from the light quantity sensor 21, which has hit the black detection piece 22 and is almost absorbed until now, enters the skin 25.
Since the amount of reflected light increases sharply,
5'is detected. When detected, the direction in which the detection piece 22 pushes the epidermis side end 25 'with a timer (not shown) (Fig. 2 (A)
The paper roll 24 is further rotated in the direction indicated by the arrow), and the adhesive tape 27 is wound over the length L of the paper roll 24 in the circumferential direction of the paper roll L or more.
The rotation of 4 is stopped and the detection piece 22 is pulled out. Then, the outer skin 25 is lifted by the suction port 12, the spatula 8 and the knife 9 of the wound paper outer skin cutting device 1 are inserted between the outer skin 25 and the inner layer paper 26, and the cutter moving device 16 is moved in the axial direction of the wound paper 24. The epidermis 25 is cut.

In this way, according to this winding paper skin cutting device, the cutter moving device 16 is provided with the light amount sensor 21 which moves together with the detection piece 22 having the black surface, so that the detection piece 22 is located below the outer skin side end 25 'of the winding paper 24. When entering, the epidermal side edge 25 'can be detected by the change in the reflected light amount.
When the outer skin side edge 25 'is detected, the outer skin 2 is placed at a position where the adhesive tape 27 attached to the leading end of the paper roll 24 does not get in the way.
5 can be cut, and because the skin lifting failure due to the semi-adsorption does not occur, the conventional adhesive tape 27
A clean cut surface of the epidermis can be obtained without tearing and semi-adsorption due to.

[0011]

In summary, according to the present invention, the spatula and the knife are attached to the substrate so as to be movable in the axial direction of the paper roll, and the suction port is attached to the tip thereof so as to be movable in the direction orthogonal to the axial direction of the paper roll. Insert the spatula between the skin of the paper roll and the inner layer paper inside it, move the substrate in the axial direction of the paper roll by the cutter moving device, and use a knife to attach the skin to the tip of the paper roll with adhesive tape. In the cutting device, in the vicinity of the spatula and knife in the cutter moving device, the detection piece facing the black side surface and the detection piece that contacts the outer peripheral surface of the side edge of the paper roll, and the insertion of the outer skin and inner layer paper of the detection piece is detected. By installing a light intensity sensor that prevents the tearing of the paper wrapper due to the position of the adhesive tape sticking on the paper wrapper, and prevents the suction failure due to half-suction, Since obtaining the present invention is extremely useful industrially.

[Brief description of drawings]

FIG. 1 shows an embodiment of a wound paper skin cutting device of the present invention,
FIG. 1A is a plan view and FIG. 1B is a side view of the above cutter moving device.

FIG. 2 is an explanatory diagram of the operation of this device.

FIG. 3 is a plan view of a conventional wound paper skin cutting device.

FIG. 4 is a side view of the above cutter moving device.

FIG. 5 is an explanatory view showing a pasted state of a front end of a wound paper skin.

[Explanation of symbols]

 1 Winding paper skin cutting device 2 Substrate 8 Spare 9 Knife 12 Suction port 16 Cutter moving device 21 Light intensity sensor 22 Detecting piece 23 Air cylinder

Claims (1)

[Claims] 1. A spatula and a knife are attached to a substrate so as to be movable in the axial direction of the paper roll, and a suction port is attached to the tip thereof so as to be movable in a direction orthogonal to the axial direction of the paper roll. In the device that inserts between the outer skin and the inner layer paper inside it, moves the substrate in the axial direction of the roll paper by the cutter moving device and cuts the outer skin with the tip pasted with adhesive tape with a knife, The device was equipped with a black surface detection piece that abuts the side edge outer peripheral surface of the paper roll near the spatula and knife, and a light quantity sensor that faces the detection piece and detects the skin of the detection piece and the insertion of the inner layer paper. A wound paper skin cutting device characterized in that