JPS6318790B2 - - 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 in a counting device that performs counting by doing so.

Newspapers and other printed matter that come out of rotary presses, for example, the morning edition, are often 24 pages long, and each 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, so the counting speed is extremely fast at 830 to 1250 parts per minute.

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 count each bundle without any errors.

Conventionally, 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 be.

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, reliably determine the pressure change, and thereby perform 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.

Reference numeral 1 denotes a printed document that is shifted and overlapped at a substantially constant pitch and sent in the direction of the arrow, and 1a is its bent end 1b.
1c indicates a bent bag surface, and 1c indicates a step 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 inserted into the groove 6a of the drive pulley.
is fitted.

9 is a fixed beam, 10 is a fixed piece, 11 is a fixed piece 10
An L-shaped fixed piece is fixed to the lower part of the holder, and the upper part is bifurcated.

Reference numeral 13 denotes an adjustment block whose pivot is a fulcrum pin 12 at the bifurcated upper end of the L-shaped fixing piece 11, and an air sensor 18 is screwed to the tip of this 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.
(Refer to 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 set 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 printed signature 1 is relatively thick, as shown in FIG. When this happens, the blowout hole 4a of the pressurized gas blowout port 4 is completely closed because the bent bag surface 1b is in contact with the surface pressure that is sufficient to prevent the pressurized gas from blowing out. Pressure gas is blown out to the next step portion 1c, and by continuously blowing out pressure gas, 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 to 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.

However, in the present invention, 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 also has a horizontal line of the printed matter 1 when viewed from the front. As a result, the peripheral part of the blowing hole _4a is in the strongest contact with the printed matter 1 among the contact surfaces, so it is sensitive to even the slightest step 1c. This is sensed and pressure gas is blown out.

Note that pressure gas relief grooves 4c, 4c are formed on both sides of the blowout hole 4a, so that the pressure gas blown into the narrow stepped portion 1c is transferred to the relief groove 4.
c, 4c to the outside, assisting the blowing out of the pressure gas from the blowing hole 4a, and pressurizing the pressure sensor 22.
This further clarifies the sensing of pressure changes.

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 also good to widen the contact width, that is, the width seen from the front, as much as possible. Since there is a limit to how wide the hole can be, it has been confirmed through experiments that it is best to set it to 8 to 10 times the diameter of the blowout hole.

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 error.

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 products with sufficient durability can be supplied at low cost.

[Brief explanation of the drawing]

FIG. 1 is a side view of the device, showing a thick layer and cutting edge case. FIG. 2 is a side view of the main part in the case of a thin layer and a cutting edge, and FIG. 3 is a longitudinal sectional side view of the main part of FIG. 1... Signature printed matter, 2... Upper carrier cord, 3... Lower carrier cord, 4... Air outlet, 4a... Air outlet, R... Radius of curvature of rotating drum, R ₁ ... Air outlet Radius of curvature of side surface, R ₂ ...
Radius of curvature in front of the outlet.

Claims (1)

[Scope of Claims] 1. A system in which printed materials such as newspapers are stacked at a substantially constant pitch, sandwiched between upper and lower carrier cords, and pressurized gas is blown from a pressure gas outlet onto the transition surface. In a counting device that counts by sensing the pressure change of the pressure gas at that time,
A curved surface with a constant radius of curvature is formed on the transition surface of the printed document, a pressure gas outlet is brought into pressure contact with the curved surface, and the pressure contact surface of the outlet has a radius of curvature smaller than the radius of curvature of the curved surface when viewed from the side. A pressure gas outlet formed to have a radius and a constant radius of curvature relative to the horizontal line when viewed from the front. 2. The pressure gas outlet in the counting device according to claim 1, wherein the width of the outlet when viewed from the front is eight times or more the diameter of the pressure gas outlet.