JPS5957845A - Seizing position detecting structure in automatic paper feeding device - Google Patents

Abstract

PURPOSE:To make it possible to improve the operatability and freely alter a pasting position by fitting a cylindrical shell body around the space between a wound paper supporting part and the pivotting part of a spider arm and providing a dog on the peripheral surface of said shell body. CONSTITUTION:A shell body 20 is formed by magnetic substance, and a non- magnetic substance dog 21 is provided in one place on the peripheral surface of the shell body 20. A proximity switch 13 for detecting the access of the dog 21 while allowing said switch to approach the rotary orbit of the dog 21 from the outside is provided on a spider arm 2. The shell body 20 can properly select its phase by turning the shell body in the opposite direction to that of a winding cone 14, so that it is possible to adapt the desired pasting position on the outer periphery of wound paper 7 to a pasting pointer by turning the shell 20 without turning a heavy wound paper 7.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a gluing position detection structure for an automatic paper splicing device in a paper making machine, printing machine, laminator machine, etc.

First, a conventional automatic paper splicing device will be explained based on FIG. 1 showing a typical example thereof. In the device shown in the drawings, the slot and rear arm 2 for attaching the paper roll 7 protrude from the center in two directions (some devices have protrusions in three directions). The reel stand IK spider arm 2 installed upright on the pace is rotatably attached. Roll paper 7.7 at the tip of spider arm 2
' is the installation. 7 is a new web, and 7' is an old web.

An infeed frame 3 is erected on the pace in parallel with a reel stand 1. The paper (running paper) 10 from the old roll paper 7' is fed out while being guided by the idle roller of the puller arm 2 and the guide roller provided on the infeed frame 3. The infeed frame 3 is provided with a predrive arm 5 that swings as shown by the arrow and has a predrive belt 6. 8 is a pre-drive motor, and 9 is a drive belt. The infeed frame 3 is also provided with a paster arm 4 that swings as shown by the arrow. The star arm 4 is provided with a Venuta roller 1 which advances in the direction of the arrow at a required time and presses the running paper 10 against the web 7, and a cutter 12 which cuts the running paper from the old web 7'.

When performing automatic paper splicing (auto paste), press ? The paster arm 4 is raised by mouth operation, the siridrive arm 5 is lowered, the predrive belt 6 is brought into contact with the outer periphery of the web 7, the predrive motor 8 is driven, and the periphery of the web 7 is driven by the running of the gridrive belt 6. The speed is set to be the same as the traveling speed of the traveling paper 10. Thereafter, the wave star roller 11 is put into operation by pressing the wave star button, and the running paper 1
By pressing 0 onto the glued web 7, the running paper 1 ( ) is adhered to the web 7, and the web 7 is unrolled.
After that, the cutter 12 starts to move (out) and the old paper roll 7'
The running paper 10 from is cut.

Paper production by the paster roller 11 and paper output by the cutter 12 are performed by operating a solenoid valve for air in response to a signal from the proximity switch 13 shown in FIGS. 2 and 3. This is done by operating an air cylinder.

As shown in FIGS. 2 and 3 (mainly FIG. 3), the web 7 is supported by a take-up cone 14 attached to one end of a take-up shaft 15 rotatably supported at the tip of the spider arm 2. ing. A dog 16 is provided at one location on the circumferential surface of the winding shaft 15.
This is provided. The spider arm 2 is provided with a proximity switch 13 that is brought closer to the rotational orbit of the dog 16 from the outside to detect the approach of the dog J6. In this way,
The mechanism is such that a signal (Noculus signal) is transmitted when the dog 16 approaches the proximity switch]3. Therefore, the first pulse signal causes the hard star roller 11 to move (in), and the second pulse signal causes the cutter 12 to move (out).

The mechanism and splicing operation of the conventional automatic splicing device are as described above. Since the dog that activates the proximity switch is at a certain point on the outer circumference of the winding shaft, the position of the dog, that is, the signal generation point of the proximity switch and the location of the landing motion of the star roller (the same goes for the coming out motion of the cutter) are constant. The angular relationship is A gluing pointer 17 (second
゜See Figure 3) is boxwood.

Therefore, it is necessary to cut off the end of the roll paper in line with the gluing pointer, and while rotating the heavy paper roll, it is necessary to cut the end of the roll paper in line with the gluing pointer. The operator had to check the position of the pointer, which was a very difficult task for the operator. In addition, if some of the rolls are poorly rolled, and the gluing position is located at a location where the surface of the roll is uneven, the adhesion between the running paper and the roll may be poor, and the paper splicing success rate may be reduced. This is the cause of the decline.

An object of the present invention is to provide an automatic paper splicing device that eliminates the drawbacks of the prior art, facilitates the gluing positioning work, and allows the gluing position to be freely changed to avoid deformed portions of the web. The present invention provides a glued position detection structure.

The gluing position detection structure in the automatic paper splicing device according to the present invention (C) is based on the structure in which the web supporting portion of the winding cone rotatably supports the web at the tip of the spider arm of the automatic paper splicing device and the spider arm. A cylindrical shell body is fitted between the pivot joint and the winding cone. It can be fixed in position, and has a dog on the peripheral surface of the shell,
The spider arm is provided with a proximity switch that is brought closer to the rotational orbit of the dog from the outside to detect the approach of the dog, and the position of the dog is in a predetermined angular relationship with the gluing position of the new web. The gluing position detection structure is characterized in that the shell is rotated so as to be in position and then fixed, and gluing and cutting of old paper are performed in response to a signal from the proximity switch.

Preferred embodiments of the gluing position detection structure according to the present invention [,1,
- The radial cross section of the cylindrical shell is U-shaped, and the U-shaped cavity accommodates three rollers with built-in one-way rotation clutches and two brake rollers, each of which has a winding. It is circumscribed by a cone and attached to a shell with a bottle, the shell being a magnetic material and the dog being a non-magnetic material.

Hereinafter, the gluing position detection structure of the present invention will be explained in the fourth embodiment of the drawings.
．． The details will be explained based on FIGS. 5 and 6. In this device as well, the winding cone 14 rotatably supports the winding paper 7 at the tip of the Snokida arm 2. A cylindrical shell is externally fitted between the web supporting portion of the winding cone 14 and the pivoting portion of the spider arm 2 (corresponding to the winding shaft 15 in FIG. 3). The shell side has a U-shaped cross section in the radial direction, and three rollers 19 and two brake rollers n are accommodated in the U-shaped cavity. Roller 19 and brake roller 2
3 is circumscribed by the winding cone 14. Coro 19
A one-way rotation clutch 22 is built in between a bottle 18 inserted through the center, and is attached to the shell side by the bottle 18. Therefore, the shell 20 has three bottles 18 and a roller 1.
9 is supported by the winding cone 14, and the winding cone 140 cannot be rotated in the direction of rotation, but can only be rotated in the opposite direction with respect to the shell 20ij and the winding cone 14.

Therefore, if the machine is stopped for some reason while the web 7 is rotating, a brake (/'1' Uta brake or motor brake) is applied to the web 7 and the shell 20 is also stopped at the same time. However, the shell 20 can be rotated in the opposite direction, and the gluing position can be set as described later. The brake roller 23 prevents a phase shift between the gluing position of the web 7 and the dog 21 on the shell side during rotation, when the winding cone 14 and the shell rotate together with the web 7 during glue drive. The brake force is made variable by the eccentric bin 24.

The shell 20 is made of a magnetic material, and a non-magnetic dog 21 is provided at one location on the circumferential surface of the shell. In addition, Snokida Arm 2 has an outer side on the rotating orbit of Dog 2].

A proximity switch 13 is provided to detect the approach of the dog 21 when the dog 21 approaches the dog 21. In the conventional devices shown in FIGS. 2 and 3, when the dog 16 approaches, the proximity switch sends an on signal, but in this device, contrary to the conventional device, the p1 shell 20 is a magnetic material, The switch 13 always sends an on signal, and changes to an off signal when the non-magnetic dog 21 approaches. With this signal, the wave - star roller (M)
Performs operation and cutter (exit) operation. Also, unlike the conventional device and the giant 1, the operating position of the paster roller (R) is the circumferential surface of the web 7 in the radial direction of the gluing pointer 17 when the dog 2 approaches the proximity switch 13 as shown in FIG. It is.

This device is constructed as described above, and since the shell 2o can be rotated in the opposite direction to the winding cone 14 and the phase can be selected as appropriate, the heavy web 7 can be rotated without being rotated.
By rotating the shell side, a desired gluing position on the outer periphery of the paper roll 7 can be aligned with the gluing pointer. Even when the paper roll is pre-driven with the gluing position aligned, the brake rollers on the shell work to apply the glue7]? There is no phase shift between the ink and the glue application position, and even if the paper is suddenly braked during operation,
A one-way rotating clutch works and the shell is also braked at the same time, ensuring safety.

Since the device of the present invention is configured as described above, conventionally,
Use heavy paper (approximately 100,100 O
However, in the device of the present invention, the cylindrical shell (approximately 1.0 kg) can be rotated, resulting in improved workability. In addition, the gluing position can be freely changed to avoid deformed portions of the web (areas with many irregularities), and the success rate of O-F d-sting is improved.

[Brief explanation of the drawing]

Fig. 1 is a side view of the entire automatic paper splicing device, Fig. 2 is a partially cutaway side view of a spider arm in a conventional device, Fig. 3 is a sectional view taken along the line I-I in Fig. 2, and Fig. 4- Fig. 5 shows an embodiment of the device of the present invention, Fig. 4 is a cross-sectional view of the web support portion at the tip of the spider arm, Fig. 5 is a cross-sectional view taken along the line ■-■ in Fig. 4, and Fig. 6 is a cross-sectional view of the web support portion at the tip of the spider arm. is Vl in Figure 5
, -Vl line sectional view. 2... Spider arm, 4... K-star arm, 5
...Pre-drive arm, 7. τ...rolling paper, 1o
...Running paper,]1...Ze-Starola,"2...
Cutter, 13... Proximity switch, 14... Winding cone, 16, 21... Dog, 17... Gluing pointer, 18... Pin, 19... Roller, 20... Cylindrical shell, 22... One-way rotation clutch, %... Brake roller, 24... Eccentric bin. Representative Patent Attorney Tadashi Akimoto Minoru 21st Tour r ■ 31'・i

Claims (1)

[Scope of Claims] 1. At the tip of the spider arm of the automatic paper splicing device, a cylindrical part is provided between the web supporting part of the winding cone that supports the web in a rotational position and the pivoting part of the Sumi4ida arm. A shape shell is externally connected, and the shell is fixed at any position with respect to the winding cone, being unrotatable in the direction of rotation of the winding cone and rotatable in the opposite direction. A dock is provided on the circumferential surface of the shell, and a proximity switch is provided on the spider arm to detect the approach of the dog by approaching the rotating orbit of the dog from the outside, and the position of the dog is set so that the new web is glued. The shell is rotated so as to be in a predetermined angular relationship with the imperial order, and then fixed, and the paste and old paper are cut by a signal from the proximity switch. Gluing position detection structure of automatic paper splicing device. 2. The radial cross-section of the cylindrical shell is U-shaped, and three rollers with built-in one-way rotation clutches and two brake rollers are housed in the U-shaped cavity, each of which has a winding cone. 2. The structure of claim 1, wherein the dog is attached to a shell by means of a bottle, the shell being a magnetic material, and the dog being a non-magnetic material.