JPS6367222B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention uses a pneumatic sensing type detection device to detect when printed materials such as newspapers are folded in four and sent out in a row in a staggered manner. This invention relates to a counting device for printed materials that accurately counts the number of copies.

For example, in the case of newspapers and other printed matter that come out of a rotary press, the morning edition is made up of 24 pages, or 6 pages, folded in the center, and then folded into quarters, and the evening edition is made up of 16 pages. Pages are 14 or 12 pages, and special editions such as Sunday editions may be 8 pages, 4 pages, or even 2 pages.

In addition to this, there are more than 10 different thicknesses.In addition to the so-called folded edge, which is fed out with the folded bag side facing forward due to the structure of the rotary press, and the folded tip, which is fed out with the folded bag side facing backward due to the structure of the rotary press, there are There is a case of the first one.

In either case, the folded newspapers are fed out in a manner that they are stacked one on top of the other at a substantially constant pitch. For example, it is extremely difficult to accurately and quickly count the number of copies of newspapers that come in without even a single error. For 100 copies in the case of a 16-page evening edition, and 150 copies in the case of a 16-page evening edition, negative counts were absolutely prohibited, even if it was possible to add a plus due to tightness or other reasons.

Also, when the total number of copies was not a multiple of the standard bundle and there were fractions, the laborious process of counting the fractions manually and creating half-fraction bundles for shipping.

In recent years, there has been a call for labor saving, and computers are used to memorize the total number of copies, command the number of standard bundles and fractional bundles, and automatically count the number of copies, making the entire line unmanned. It is still incomplete and reliable for accurate counting without any errors.

In an attempt to meet this demand, the present applicant previously filed a patent application No. 158521/1983 for a method and device for counting printed materials, but this was complicated in structure and required pneumatic detection. Since the printed matter is forcibly transferred using a drum equipped with a device, the forced transfer disturbs the shape of the area, which causes a counting error. The present invention has improved this, and the drum rotates simply following the movement of the printed matter, thereby avoiding such errors as much as possible, and simplifying the overall structure.

This will be explained with reference to the diagram.

In FIG. 1, 1 is a frame, and 2 is a plurality of elastic endless belts stretched between a head pulley 4 and a tail pulley 6. The head pulley 4 is driven and the tail pulley 6 is driven.

9 is an endless belt on the introduction side of the signature print P; 14
are endless belts on the outlet side, each of which is elastic and has a plurality of belts.

11 and 16 are head pulleys, and 13 and 18 are tail pulleys. The tail pulley 18 is swingable about the head pulley 16 axis as a fulcrum.
This serves as a safety device for emergency ejection of the printed documents P that are continuously sent. 19 indicates its swinging arm.

Reference numeral 7 denotes a support shaft mounted on the frame 1, and a drum 8 is loosely fitted onto the support shaft 7 so as to freely rotate.

The drum 8 is brought into pressure contact with approximately the center of the endless belt 2.

Reference numeral 21 denotes an air pressure sensing type detection device, which is fitted between the drums 8, 8, as shown in FIG. As shown in FIG. 2, the fixed piece 2 of the fixed beam 22 fixed to the frame 1
It is attached above the L-shaped support piece 24 attached to 3, the details of which will be described later.

In FIG. 3, the support shaft 7 is supported by brackets 26, 26 fixed to the frames 1, 1. 2
6' is a set screw.

27 is a spacer inserted into the center of the support shaft 7;
28, 28 are ball bearings provided on both sides, 29, 29 are spacers outside each of the ball bearings 28, 28, 28', 28' are ball bearings outside the spacers 29, 29, and anti-rotation washers 30, 30. and grooved nuts 31, 31
to fix the position. The drums 8, 8 are fitted onto the outer races of ball bearings 28, 28', 28, 28'. Note that brackets 26 and 26 are frame 1.
It is also possible to make the mounting position vertically adjustable.

The air pressure sensitive detection device 21 will be described in further detail with reference to FIG.

A connector 33 is provided on the L-shaped support piece 24, and the air sensor 3 of the device 21 is attached to the connecting piece 34 at the tip of the L-shaped support piece 24.
Fix 5.

A nozzle 36 is provided above the air sensor 35. 37 is its nozzle hole. Nozzle 3
6 is a leaf spring 38 that is brought into close contact with the air sensor 35. The leaf spring 38 is attached to the tip of a mounting plate 40 that is pivotally supported around a fulcrum pin 39, and a coil spring 41 is interposed between the tip of the mounting plate 40 and the tip of the connector 33.

The coil spring 41 is connected to the nozzle 36 of the signature print P.
When the pressing force against the printed material P is too large, it bends, and always applies an appropriate pressing force to the surface that comes into sliding contact with the printed material P.

If the tip of the nozzle 42 is pushed out using an adjustment screw, the upper surface of the nozzle 36 will be lowered using the fulcrum pin 39 as a fulcrum, and conversely, if the same screw 42 is loosened, the upper surface of the nozzle 36 will be raised.

In this way, the upper surface of the nozzle 36 is
Adjust so that it protrudes slightly from the outer circumferential surface of.

Reference numeral 37' denotes an air exhaust groove to the outside, which allows air to escape to the outside when the printed document P is thin.

43 is a rotation prevention plate for the level adjustment screw 42; 44
is its fixing screw.

Reference numeral 45 denotes a pressure gas introduction pipe whose lower end 45' is connected to a pressure gas source via a pressure regulating valve (not shown).

Reference numeral 46 denotes a pressure gas outlet pipe, the lower end of which is attached to a pressure sensor 47.

The pressure sensor 47 applies the sensed pressure change of the pressure gas to a silicon diaphragm on the surface of which a strain cage portion is directly formed as a diffusion layer, detects it as a voltage proportional to the minute strain generated therein, and amplifies this voltage. This is converted into a digital waveform and used as a counting pulse. (Details are not shown.) 47' is a conductor connected to the amplifier.

Q is a stepped portion having a triangular cross section that is formed between the paper sheet P and the conveyance path 25 when the printed documents P are sent in a shifted manner.

As described above, by pressing the drum 8 having such a structure against the approximate center of the elastic endless belt 2 stretched between the head pulley 4 and the tail pulley 6, the printed matter P can be printed. A guiding curved surface is formed in the conveyance path 25, and the printed document P introduced here is clamped to the drum 8 with a substantially constant contact pressure by the tension component of the endless belt 2, and is in a state with the least vibration. be. Counting is performed with the nozzle 36 of the air pressure sensing type detection device 21 facing approximately the center of this curved guide surface.

32 is fixed to the fixed beam 22 by a guide chute provided between the drum 8 and the head pulley 16.

Note that the air pressure sensing type detection device 21 can also be attached to the support shaft 7 without using the support piece 23 of the frame 1.

Figures 1 and 2 apply to the cutting edge, and Figure 4 applies to the folding edge.
In the figure, a drum 8 is positioned above, and an endless belt 2 and an air pressure sensing type detection device 21 are provided on the bottom surface of the drum 8.
It is intended to provide

In this case as well, a guide curved surface is formed at the least vibration-free part of the printed document, and the air pressure sensing type detection device 2
There is no difference in counting by 1.

In FIG. 2, the signature printed matter P is now being sent between the endless belt 2 and the drum 8 in a stacked state.

Then, a stepped portion Q having a triangular cross section is formed between the upper surface of the drum 8, that is, the conveyance path 25, and the signature printed material P on the folded bag side of the signature printed material P.

Pressure gas is blown out from the nozzle 36 of the air pressure sensing type detection device 21 onto this stepped portion Q.

With the flow of the printed document P, this stepped portion Q gradually becomes narrower through a stepped portion on the upper surface of the nozzle 36 and finally disappears, and then the next stepped portion Q appears continuously. It will be done.

This pressure change is detected by the pneumatic pressure sensing type detection device 21, and each copy of the signature printed material P is counted accurately each time it passes there.

Counting based on this change in air pressure must be performed accurately while the printed document P is flowing at high speed, without allowing even the slightest error. And the signature print P
The shape of the triangular stepped portion Q is not necessarily constant, and in addition, the accuracy of counting may be affected by vibrations of the machine, etc. It is difficult to maintain this at all times, and this leads to counting errors.

Therefore, in the present invention, the change in the contact pressure between the printed document P and the nozzle 36 is minimized to ensure the accuracy of counting. When this contact pressure changes, the pressure sensor 47 of the air pressure sensing type detection device 21 senses the change in pressure gas, and when this is detected as a voltage, the digital waveform is disturbed and the reading as a counting pulse becomes inaccurate.

For this purpose, the drum 8 equipped with the air pressure sensing type detection device 21 is brought into pressure contact with the substantially central portion of the endless belt 2, so that the conveyance path 25 for the signature printed material P is formed into a dogleg-shaped guiding curved surface. Here, the printed matter P is brought into contact with the nozzle 36 and counted.

By doing so, the nozzle 36 and the signature printed matter P stably contact with a substantially constant pressure, and changes in the contact pressure are extremely small.

Further, since the drum 8 simply rotates following the flow of the printed matter P that is conveyed as the endless belts 9, 2, and 14 move, the stepped portion Q is forcibly moved by the rotation. Since no deformation occurs at all, the counting is extremely accurate.

And this drum 8 is an endless belt 9, 2, 1
It is independent of the device for transporting the signature printed material P such as 4, and to install it, the endless belt 2
The purpose can be achieved simply by press-contacting it approximately in the middle of the body, so the entire device can be constructed without difficulty.

[Brief explanation of drawings]

Fig. 1 is a longitudinal side view of the device of the present invention, Fig. 2 is an enlarged longitudinal side view of the main parts thereof, Fig. 3 is a sectional view taken along line A-A in Fig. 1, and Fig. 4 applies to the case of folding edges. FIG. DESCRIPTION OF SYMBOLS 1... Frame, 2... Endless belt, 7... Support shaft, 8... Drum, 21... Air pressure sensing type detection device, 24... Support piece, 25... Conveyance path, 36...
...nozzle, P...signature printed material, Q...stepped portion.

Claims (1)

[Claims] 1. The nozzle of the air pressure sensing type detection device is brought into contact with the stepped part of the triangular cross-section of printed materials such as newspapers that are conveyed overlapping each other at a nearly constant pitch, and the change in the internal pressure of the nozzle is converted into a potential difference to calculate the number of copies. In the counting device, the drum is loosely fitted onto a support shaft provided on the frame so that it can rotate freely, and an air pressure sensing type detector is fitted approximately in the center of the drum, and its nozzle is placed slightly below the outer circumferential surface of the drum. This pneumatic detection device is supported by a support piece fixed to the frame, and the drum is pressed against approximately the center of an elastic endless belt stretched between the head pulley and the tail pulley. A counting device for printed matter such as newspapers.