JPS604044B2 - How to bind sheet materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for automatically stacking and bundling a predetermined number of sheet-like articles sequentially carried in by a carry-in conveyor at a predetermined position where they can be stopped by a stopper.

Conventionally, in the above-mentioned tying method, a sheet-like object, that is, a sheet-like or plate-like object such as cardboard or a book, is tied to a string stretched vertically between the end of the arm of the tying machine and the string holder of the knot forming mechanism. Objects (workpieces) are carried in, the front end of the first workpiece to be carried in out of a predetermined number is placed against a string, and the string is pulled out while the workpiece is carried into a predetermined position.

Therefore, if the workpiece is a relatively light item such as cardboard, the thin resistance being pulled out may tilt the workpiece or slow down the loading speed, disrupting the timing and reducing processing capacity. In some cases, there have been various inconveniences, such as the work being unable to be transported to a predetermined position and being stagnant. The object of the present invention is to solve the above-mentioned problems of the prior art, and therefore, the present invention has been developed to provide a sheet-like material that can be stacked and bundled in a predetermined position without being affected by the pull-out resistance of the string. The purpose is to provide a method for tying things together.

A feature of the binding method according to the present invention is that when the front end of the first sheet to be bundled in a predetermined number hits a string that has been stretched vertically in advance, or at the same time, the string is pulled by a claw. Embodiments of the present invention will be described below with reference to the drawings.

Each figure shows an example of a device suitable for carrying out the present invention, which device includes a pair of binding devices 10 arranged opposite each other, and along each binding device an inlet conveyor 11, preferably a belt conveyor. has been set up.

Each binding machine has an arm that moves up and down, that is, a binding arm 12.
It is of the type that pivots up and down or vertically moves up and down, and in addition to the arm 12, it has a knot forming mechanism I4 having a string presser 13, a stopper 15 that can be moved forward and backward by a cylinder etc., and a stacked sheet-shaped It includes a press device 16 that presses the object from above. Furthermore, this device is installed at approximately the same height as the support surface of the conveyor 11 - the lotus conveying rollers 17.
, a pinch roller 18 for feeding the workpieces between them and the conveyor 11, and a push-up device 19, preferably having a cylinder device, for temporarily pushing up the rear part of the workpieces stopped at a predetermined layer, that is, the bundling position, by the stopper 15. including.
The bundling method according to the present invention involves stacking and bundling a predetermined number of workpieces in the form of sheets at a predetermined position where they can be stopped by a stopper 15. Therefore, the front end of the first workpiece to be carried in from among the predetermined number of workpieces is pre-aligned with the arm 15. The process includes the step of detecting the arrival of the workpiece before it hits the thin S stretched vertically between the tip of the workpiece and the string presser 13, and pulling out the string based on the detection signal. A claw 20 located in front of the string stretched up and down, that is, on the opposite side from the stopper 15, a device 21 that supports and reciprocates the claw 20, and detects the workpiece A that is brought in first. For actuating the pawl 20, a sensing device 22, such as a limit switch or a phototube, is provided.

In the illustrated example, as can be seen in FIG. 5, the drive device 21 consists of an endless belt operated by a motor 23, but other devices may be used, such as a linkage or a cylinder arrangement. In the next step, the present invention operates the motor 23 based on the detection signal from the sensing device 22, and also operates the claw 20 via the drive device 21, so that the front end of the workpiece to be carried in first is vertically moved. At the same time as or before hitting the stretched thin S, hook the two-claw strand and pull it out.

In this example, the loading conveyor 11 is
The claws 20 do not necessarily have to move along the conveyor 11 and may move in the direction of the stopper 15 by other routes. . Further, the claw 20 is not necessarily the stopper 1.
It does not have to be longer than 5, but it is enough to pull out the length of string required for binding. Following the movement of the claw 20, the workpiece is carried in, but in the illustrated device, the workpiece is moved by the push-up device 1.
9, the push-up device 19 is lowered by a suitable sensing device, so that the workpiece advances unhindered by it and is stopped against the stopper 15.

When the first workpiece reaches the stopper 15 in this manner, the pawl 20 is returned to its original position and the string is hooked to the front edge of the workpiece. Next, as shown in FIG.
When the next workpiece reaches a position where it slightly passes the rear end of the previous workpiece, the push-up device 19 is lowered.
The next workpiece is fed under the previous workpiece and pushed up until it hits the stopper 15. When a predetermined number of works are stacked in this way, it is preferable to press the stack of works with the press device 16 before tying, and then the tying arm 12 descends and the knot forming mechanism 14
A knot is formed by the action of the string, and as the string is cut, the new string end is held in the string presser, the binding arm 12 is raised, the stopper 15 is moved back, and the tied workpiece is carried out by the conveyor 11 and the conveyor roller 17. , return to the initial state.
Note that in this example, the sheet-like material is tied at two locations. In the above example, the push-up device 19 lifts the workpiece at a predetermined position.
The rear part of the workpiece is specially raised, and the next workpiece is fed in from below and stacked. However, instead of using a lifting device, the carry-in conveyor 11 is composed of a pair of conveyors, the rear conveyor is made slightly lower, and a stopper is installed. The rear end of the workpiece A, which has been fixed at a predetermined position at step 15, may be slightly protruded from the rear end of the front conveyor, and the next workpiece may be sent under the previous workpiece at the predetermined position.

In this case as well, just before the first work is carried in, the string is hooked by the claw 20 and pulled out. Further, there is provided another conveyor for carrying in diagonally above the carrying-in conveyor 11 and a pair of pinch rollers provided at the exit end of the conveyor, and these conveyors and pinch rollers move the next workpiece to a predetermined position. You may also stack up the work by fighting on top of the previous work. As described above, in the binding method according to the present invention, the string is hooked by the claw and pulled out at the same time or before the front edge of the workpiece that is brought in first among the predetermined number of works to be stacked hits the string.
There is no need to pull out the string when carrying the workpiece in, and the pullout resistance of the string will not cause the workpiece to tilt or slow down the carrying speed. Sheets can be stacked and tied together.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of a device used to carry out the present invention, FIG. 2 is a side view thereof, FIG. 3 is an end view, and FIG. 4 is a first
A sectional view taken along the line A--A in the figure, and FIG. 5 is a plan view of the hook for hooking the string and its related members. In the figure, 10... Binding machine, 11... Loading conveyor, 15... Stopper, 18... Pinch loaf, 19
...Pushing device, 20...Claw, 22...
Sensing device, A... Sheet-like object, S...
Thin. O figure, Z figure, O figure, 3 figure, 4 power figure

Claims (1)

[Claims] 1. A step in which strings are stretched vertically between the end of the arm of the tying machine and a string presser of the knot forming mechanism, and a step in which the front end of the sheet-like material that is first carried in is attached to the strings stretched vertically. a step of detecting the abutment before the abutment; and a step of activating the pawl in response to the detection signal, and simultaneously or before the front end of the first sheet material hits the string stretched vertically in the binding machine, the pawl binds the string. a step of hooking and pulling out the objects; a step of stacking a predetermined number of sheet objects at the predetermined position by sequentially stopping the sheet objects in a predetermined position with a stopper; and a step of stacking a predetermined number of sheet objects at the predetermined position by lowering the tip of the arm. A method for bundling sheet-like objects, including the step of bundling. 2. In the binding method set forth in claim 1,
The method for bundling sheet-like objects further includes the step of pressing the sheet-like objects with a press device immediately after a predetermined number of the sheet-like objects are stacked.