JPS6318791B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION According to the present invention, when printed materials such as newspapers are stacked at a substantially constant pitch and sent by a carrier cord, a pressurized gas outlet is brought into contact with the surface of the printed materials. Pressure gas is blown onto the surface of the printed document, and the change in pressure determined by the step formed between the curved bag surface of the printed document and the curved bag surface of the next printed document is detected. This relates to a pressure gas outlet by a counting device that performs counting by doing this.

Newspapers and other printed matter that come out of a rotary press, for example, the morning edition, are often 24 pages long, and one copy is folded into four. For evening editions, Sunday editions, and advertising editions, the number is less than 2.
The minimum number of pages is folded into four, which constitutes one copy.

In other words, these pages vary in thickness from 24 pages to 2 pages.

Furthermore, there are two cases: a so-called fold tip, which is fed with the folded bent portion in the front, and a cutting tip, which is fed with the bent portion in the rear.

In any case, it flows in various states from time to time, and the speed of the flow is 35 to 58.
m/min, therefore the counting speed is per minute
830-1250 copies, extremely fast.

Moreover, the number of copies to be processed is enormous, 200,000 to 450,000 copies in 5 to 6 hours, and this number must be counted continuously.

The mission of counting is to calculate 1 for each bundle.
The goal is to count without making any mistakes.

Traditionally, when newspaper companies ship newspapers to newsagents, one bundle is 100 copies for the morning edition and 160 copies for the evening edition.

If there is one more copy of this bundle, it is considered acceptable, but on the other hand, even if there is one less copy, this is absolutely unacceptable.

In addition to this, we also have to count odd bundles.

In this way, when counting newspapers, there are various conditions during counting, and it must be able to adapt immediately to these conditions, and it must be possible to count continuously at extremely high speed and without a single error. Must-have.

The present invention is intended to meet this demand, and by improving the pressure gas outlet,
The purpose of this method is to spray pressurized gas onto a printed document and reliably determine the change in pressure, thereby performing accurate counting.

This will be explained with reference to the diagram.

Figure 1 shows a morning edition of a newspaper with 24 pages per copy, which is sent with a cutting tip, and Figure 2 shows a thin folded printed matter, such as a newspaper with 2 pages per copy, which is sent with a cutting tip. This is the case.

1 is a printed document that is shifted and overlapped at a substantially constant pitch and sent in the direction of the arrow, 1a is the bent end thereof, 1
b indicates a bent bag surface, and 1c indicates a stepped portion having an approximately triangular cross section formed between the bent bag surface 1b and the next bent bag surface 1b.

2 is the upper carrier cord, 3 is the lower carrier cord, 4 is the counting pressure gas outlet, 4a
is its outlet.

5 is a rotating drum that rotates in contact with the printed document 1; 7 is its drive shaft; 6, 6 (see Figure 3);
A drive pulley is provided on both sides of the rotating drum 5, and the lower carrier cord 3 is fitted into the groove 6a of the drive pulley. 9 is a fixed beam, 10 is a fixed piece, 1
Reference numeral 1 denotes an L-shaped fixing piece fixed to the lower part of the fixing piece 10, and the upper part is bifurcated.

13 is the fulcrum pin 1 at the bifurcated upper end of the L-shaped fixed piece.
An air sensor 18 is screwed to the tip of the adjustment block 13 via a connecting plate 17.

A connector 14 is fixed to the bifurcated lower part of the L-shaped fixing piece 11 with a bolt 14a. 14' is the upper end of the connector 14, and a coil spring 15 is installed between this upper end 14' and the adjustment block 13. At the lower end 13' of the adjustment block 13,
An adjustment screw 16 is provided, and by adjusting the adjustment screw 16, the level of the air outlet 4 fitted to the air sensor 18 is adjusted.

19 is a leaf spring that connects the air outlet 4 and the air sensor 1.
8 are brought into close contact with each other.

Reference numeral 20 denotes a pressure gas introduction pipe, which communicates with a pressure gas source via a pressure regulating valve (not shown).

21 is a lead-out pipe for the same gas and is connected to a pressure sensor 22 attached to the connector 14. The pressure sensor 22 has a pressure gas outlet 4 connected to the bent bag surface 1.
6 or the outlet 4
Changes in pressure caused by releasing pressure gas to the stepped portion 1c are transmitted to the step portion 1c.

As mentioned above, the change in pressure sensed by the pressure sensor 22 is applied to a silicon diaphragm on which a strain gauge part is directly formed as a diffusion layer, and is detected as a voltage proportional to the minute strain generated therein.
This detected voltage is amplified and converted into a digital waveform, which is used as a counting pulse to perform counting.

The upper surface of the pressure gas outlet 4 is
When the flow is viewed from the side, its radius of curvature R ₁ is
It is made smaller than the radius of curvature R of the rotating drum 5.
(See Fig. 2) And with this, the air outlet 4 of the air outlet 4
The peripheral part of a is made to come into relatively strong pressure contact with the signature printed matter 1 among the contact surfaces.

Also, when viewed from the front of the flow of the printed matter 1, the radius of curvature is adjusted relative to the horizontal line so that the peripheral part of the blow-off hole 4a abuts relatively strongly within the contact surface.
Let the contact surface have R ₂ .

Further, on both sides of the blow-off hole 4a, there are printed matter 1
Along the flow direction, two pressurized gas release grooves 4c, 4c are provided with the sliding surfaces 4b, 4b having approximately the same width as the diameter of the blowout hole 4a, separated from each other.

When the signature printed matter 1 is relatively thick, as shown in FIG. Then, the blowing hole 4a of the pressurized gas blowing port 4 is completely closed because the bent bag surface 1b is in pressure contact with the surface pressure that is sufficient to prevent the pressurized gas from blowing out. Pressure gas is blown out to the stepped portion 1c, and this is continuously performed, so that the pressure sensor 22 senses the pressure change, and counting is performed reliably.

When the printed bibliography 1 is thick, the blowing of pressurized gas against the stepped portion 1c is clearly detected in this way.

However, when this is thin as in the case of Figure 2,
Since the stepped portion 1c is thin and short in length, it is difficult to reliably detect changes in pressure.

Therefore, in the present invention, the pressure gas escape grooves 4c, 4c are formed on the side surface of the outlet 4a, so that the pressure gas blown into the narrow stepped portion 1c escapes directly from the stepped portion 1c. The pressure gas is also discharged to the outside from the relief grooves 4c, 4c, thereby promoting the blowing out of the pressure gas from the blow-off hole 4a, thereby making it easier for the pressure sensor 22 to detect pressure changes.

The upper surface of the air outlet 4 has a radius of curvature R 1 smaller than the radius of curvature R of the rotating drum 5 when viewed from the side, and has a radius of curvature R ₁ smaller than the radius of curvature R of the rotating drum 5 when viewed from the front. _R2 , and as a result, the peripheral part of the blow-off hole 4a is in the strongest contact with the printed matter 1 among the contact surfaces, so in combination with the provision of the pressure gas escape groove 4c, Even a slight step 1c can be sensed sharply and the pressure gas can be blown out, so that accurate counting can be expected.

In the above case, the pressure gas outlet 4 is rubbed by an average of about 300,000 pieces of printed matter (newspapers) per day, as described at the beginning, so for example, it may be hardened by heat treatment or hard chrome. It is necessary to prevent wear by plating, and it is better to make the contact width, that is, the width seen from the front, as wide as possible. However, in order to do this, it is necessary to widen the distance between the upper and lower carrier cords 2 and 3, and there is a limit to this, so experiments have shown that it is best to make this 8 to 10 times the diameter of the outlet hole. The results were confirmed.

According to the present invention, even when the printed materials are thick, it is possible to count the printed materials that are shifted and flow.
Alternatively, even if it is relatively thin, it can be counted accurately and at high speed without any errors.

This type of counting device, which in the past could not be put to practical use due to occasional errors, has been completely put into practical use, and its structure is extremely simple, and there are no difficulties in its manufacture. Moreover, there is no problem in terms of service life, and a sufficiently durable product can be manufactured at a low cost.

[Brief explanation of the drawing]

FIG. 1 is a side view of the device, showing the thick layer and cutting edge case. FIG. 2 is a side view of the main part in the case of a thin layer with a cutting edge, and FIG. 3 is a longitudinal cross-sectional view of the main part of FIG. DESCRIPTION OF SYMBOLS 1... Diary printed material, 2... Upper carrier cord, 3... Lower carrier cord, 4... Air outlet, 4a... Air outlet, 4c... Pressure gas release groove.

Claims (1)

[Scope of Claims] 1. A system in which printed materials such as newspapers are stacked at a substantially constant pitch and sandwiched between upper and lower carrier cords, and pressurized gas is blown onto the transition surface from a pressure gas outlet. In a counting device that senses the pressure change of the pressurized gas at that time and performs counting based on this, the pressure gas outlet that is in pressure contact with the transition surface of the printed document has a side surface of the outlet when viewed from the front of the flow. A pressure gas outlet with a pressure gas release groove. 2. A pressure gas outlet in a counting device according to claim 1, wherein pressure gas relief grooves are provided on both sides of the outlet. 3. The pressure gas outlet in the counting device according to claim 2, wherein the contact width of the outlet when viewed from the front is six times or more the diameter of the outlet.