JPH038386Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a gluing device for attaching glue in a line shape to a continuous form paper on which a predetermined frame is printed and perforations are provided at a constant pitch. Something,
The present invention is characterized in that it is possible to perform gluing in a uniform state during intermittent gluing.

[Conventional technology]

Conventionally, when producing copy-type slips that are made by stacking a certain number of sheets of continuous form paper on which a predetermined frame is printed and perforations 22 of a certain pitch are provided, printing by a computer has been used. For this reason, a continuous form paper is used, as shown in FIG. 2, with feeding holes 21 provided at both ends of the long paper for feeding the paper. A plurality of these form papers are continuously fed in a parallel state, and glue is continuously applied in a line shape to the inside of one of the paper holes in the longitudinal direction of each paper. It is made into a continuous shape and folded in a zigzag shape at the perforation 22. Necessary characters and data are then continuously typed into the several sheets of continuous paper produced in this way by a computer, but at this time, the folded several sheets of form paper are sequentially pulled up and stretched. Then, as shown in FIG. 4, a tenting phenomenon 23 occurs at the folded portion, which impedes setting into a computer and subsequent transportation. This is because the line-shaped glue 27 is continuously attached to the front and back of the perforation 22 that is perpendicular to the longitudinal direction so as to cross the perforation. By using a thin disk 25 having a cutout 24 as shown in FIG. 3, and partially immersing the lower part of the disk in a glue tank 26 and rotating it in contact with the bottom surface of the continuous paper, the perforations are made as shown in FIG. The above-mentioned tenting phenomenon is solved by not applying glue between a certain distance in the front and back.

[Problem that the invention attempts to solve]

However, in the case of application using the notched disc shown in Figure 3,
Glue adheres to the sides of the disc, making it impossible to apply the glue in a thin line of a constant width, and even if you scrape off the glue on the sides with a scraper, it is not very effective due to the high circumferential speed. , the application speed is also 1 second.
It was a slow one, about 20 to 30 cm. Furthermore, it is necessary to change the cutout disk in various ways depending on the size of the pitch of the perforation 22, which is inefficient.

In order to solve the above problem, we initially considered a method in which glue was put into a cylinder and the pressure of a piston was used to discharge the glue from a nozzle installed at the tip of the cylinder, but this method It was difficult to install the paper between the sheets being fed, and the discharge pressure could not be sharply cut, resulting in the formation of "pools" of glue at the front and rear ends of the line.

[Means for solving problems]

The present invention solves the above problems all at once, by using a long and narrow piston cylinder and providing a glue discharge port on the outer circumferential surface of the cylinder.
This device is characterized in that the discharge of glue, which is constantly filled in the cylinder under pressure, is quickly cut off by the sliding movement of the piston.

That is, in the present invention, a press-fit hole 2 is provided on a part of the outer circumference of a cylinder 1, a connecting rod 6 is provided inside this cylinder, and two pistons 7 and 8 are provided on this connecting rod so as to straddle the press-fit hole. Connecting rod 6
The pistons 7 and 8 are provided to slide inside the cylinder by the drive of the cylinder, and a glue discharge nozzle 4 is provided at a position offset in the axial direction and circumferential direction with respect to the glue press-fitting hole on the outer periphery of the cylinder. This is an intermittent gluing device that uses reciprocating motion to instantly open and close only the glue discharge nozzle.

〔Example〕

Hereinafter, one embodiment of the gluing device according to the present invention will be described based on the drawings.

In the figure, reference numeral 1 denotes a cylinder, which has a press-fit hole 2 in the upper part of the outer periphery, and a glue discharge hole 3 in the lower part at a position slightly shifted forward in the axial direction with respect to the press-fit hole. There is a discharge nozzle 4 in the hole.
is provided. 5 is a deaeration hole provided at the tip of the cylinder.

6 is a connecting rod, and the above-mentioned glue press-fit hole 2 is inserted into this connecting rod.
Pistons 7 and 8 are provided at a certain distance in the axial direction so as to straddle the discharge hole 3, and a glue filling chamber 9 is formed in the ring-shaped space between the two pistons.

A piston rod 10 has another piston at its rear end, and this piston rod is connected to the connecting rod 6 and driven by air or hydraulic pressure.

To explain the drive means of the piston-cylinder type gluing device described above based on an illustrated example, a glue tank 12 is provided in the glue press-in hole 2 of the cylinder 1 via a pipe 11; A regulator 13 and an air compressor 14 are provided. A solenoid valve 16 is connected to the air compressor via another regulator 15, and the piston rod 10 is driven back and forth by switching this valve.

In addition, instructions to the solenoid valve 16 can be given by a computer 17 which reads the progress state of the form paper based on the number of feed holes 21 and issues commands for when to discharge the glue from the nozzle and when to stop. .

[Operation]

The gluing device according to the present invention brings the tip of the glue discharge nozzle 4 into contact with a predetermined position of the form paper running on a rotary press, and detects the number of feed holes 21 provided in the edges of the form paper 20. As shown in FIG. 2, the discharge of the glue 27 is stopped only within a certain distance between the front and back of the folding perforations 22, which are provided at a certain pitch, as shown in FIG. To discharge and stop the glue, the number of feed holes 21 is read by a sensor, and the solenoid valve is driven by the computer 17 based on the signal. By blocking the nozzle and stopping the discharge of glue from the nozzle, and conversely opening the discharge hole when the connecting rod is pushed forward, the glue filling chamber 9 between both pistons is constantly filled with pressure. The viscous glue is discharged from the discharge nozzle 4 in the form of a thin line,
It is applied uniformly to the traveling foam paper at high speed.

[Effect of idea]

The present invention is extremely simple in structure as described above, but since it is equipped with a glue discharge nozzle on the outer periphery of a long and narrow cylinder, it is possible to feed multiple sheets of paper paper close together and simultaneously in parallel. Even in a rotary press, if there is a space between each sheet slightly larger than the diameter of the cylinder, there is a great practical advantage that the sheets can be inserted from the side.

In addition, regarding the state of application of linear glue, a glue discharging nozzle is provided on the outer periphery of the cylinder, and a piston that closes this nozzle operates in a so-called shutter-like manner to cross the nozzle mouth, so that the cut-off speed of glue is reduced. is fast and complete, and the distance between the glue filling space and the nozzle tip is short, and the glue is cut at the mouth of the nozzle, so there is no discharge of glue due to inertia pressure after the nozzle is closed, and it is easy to draw. , no glue "pools" will form at either end.

Therefore, the running speed of the form paper has increased to 600 mm, which would have been unthinkable with conventional methods for a glue applicator.
It is possible to increase the speed to ~1000 mm/sec, and because the glue is always discharged under a constant pressure, the width of the line drawn and the amount of glue deposited are uniform.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; Fig. 1 is a cross section of the gluing device and a block diagram showing its drive system, Fig. 2 is a plan view of the form paper, and Fig. 3 is a block diagram showing the gluing device and its drive system.
The figure is a side view of a conventional gluing disk, and FIG. 4 is a side view showing a tenting phenomenon using a conventional foam paper. 1...Cylinder, 2...Glue press-fit hole, 3...
Glue discharge hole, 4...discharge nozzle, 6...connecting rod,
7, 8...Piston, 9...Glue filling chamber, 10...
...Piston rod.

Claims (1)

[Scope of utility model registration request] A press-fit hole 2 is provided in a part of the outer periphery of the cylinder 1, and a connecting rod 6 is provided inside this cylinder, and two pistons 7 and 8 are provided on this connecting rod to straddle the press-fit hole, and the connecting rod 6 is driven. The pistons 7 and 8 are provided to slide inside the cylinder, and the glue discharge nozzle 4 is provided at a position shifted in the axial direction and circumferential direction with respect to the glue press-fit hole on the outer periphery of the cylinder, and the reciprocating movement of the piston is provided. An intermittent gluing device that can instantly open and close only the glue discharge nozzle.