JP3213802B2 - Numbering device with position detection function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a numbering device (number printing device) used for a printing device such as a printing machine, and more particularly to a numbering device having a function of detecting a feed position of each character ring using a permanent magnet. About.

[0002]

2. Description of the Related Art Conventionally, for printing a number having a continuous number such as securities, for example, a plurality of ring-shaped rings engraved with progressive numbers are engraved on the surface of a cylindrical body. A numbering device is constituted by separately arranging the numbering device, for example, mounted on a rotating shaft of a printing press, and each time the rotating shaft makes one rotation, a predetermined character ring is moved up to the next numeral to print a serial number. I was

[0003]

However, in this type of conventional numbering apparatus, for example, due to poor maintenance or rotation of the unspecified ring due to foreign matter such as dust or the like, rotation of the ring is caused. If a climbing error occurs, it cannot be found during the printing operation, so it will be found by the operator after printing, resulting in a large loss of work time and paper during this time. In addition, since the check is difficult, in the worst case, there is a fear that the occurrence of the printing failure may not be noticed. In order to prevent this, it is desirable to add a device that monitors and detects the position of each character ring and issues a print stop and a warning.

For this type of purpose, a method of attaching a permanent magnet (magnet) to an object to be detected and detecting and monitoring its magnetic flux with a magnetic sensor is often used as a small and resistant detection method. However, when the distance between the detection objects is small (for example, 0.1 ″ = 2.54 mm) as in the ring of the numbering device, accurate detection becomes difficult due to the influence of magnetic flux leakage from the adjacent permanent magnet. It is becoming.

Further, since the permanent magnet must be mounted at a height such that it does not touch the printed matter, it cannot be sufficiently close to the magnetic sensor. For this reason, as shown in an example of the main part in FIG. 7 , the magnetic flux density near the magnetic sensor is remarkably reduced, and the detection voltage due to the magnetic flux of the magnetic sensor is reduced. In addition to the fact that the difference from the equilibrium voltage can not be taken large,
More accurate detection becomes difficult.

In FIG. 7 , reference numeral 1 denotes a magnetic substance
Each ring of a magnetic material attached to the
Reference numeral 2 denotes each permanent magnet (magnet) attached to each ring 1, 3 denotes a magnetic flux generated by the magnet, 4 denotes a magnetic sensor for detecting the magnetic flux 3 , 7 denotes a magnetic sensor 4
1 shows a printed circuit board .

As a countermeasure, there are various methods for reducing the influence of the unbalanced voltage, such as selecting a magnetic sensor element, adjusting with a variable resistor, and using an adjusted IC magnetic sensor. At the same time, the size of the substrate and the components is increased, so that there is a problem that the distance between the detection targets is restricted.

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation, and has the effect of reducing the influence of magnetic flux leakage from an adjacent permanent magnet, increasing the magnetic flux density near a magnetic sensor, and improving the circuit board and It is an object of the present invention to provide means capable of solving the above-described problem by providing a magnetic metal member for forming a magnetic path that can be easily attached to a numbering device.

[0009]

Therefore, in the present invention, the object is achieved by providing a numbering device with a position detecting function according to any one of the following items (1) to (5). Things.

(1) A magnetic metal fitting having projections for converging magnetic flux from each permanent magnet attached for detecting the position of each character ring of a numbering device frame to each magnetic sensor on a magnetic detection circuit board. Is attached to the frame, the numbering device with a position detecting function.

(2) A magnetic metal fitting having a projection for reducing the influence of magnetic flux leaking from an adjacent permanent magnet is attached to each of the character rings with the permanent magnets for position detection arranged at a narrow interval. A numbering device with a position detection function according to the above (1), which is characterized by the following.

(3) A magnetic metal fitting having a projection for converging a magnetic flux from a permanent magnet attached for detecting the position of the character ring on each of the magnetic sensors is fixed to the magnetic detection circuit board. The numbering device with a position detection function according to any one of (1) and (2), wherein the numbering device is used as a positioning pin.

(4) The circuit board on the numbering device is simplified and downsized by providing the data processing circuit on the rotary shaft of the printing press. The numbering device with a position detection function according to any one of (3) and (3).

(5) A magnetic sensor for detecting magnetism utilizing the magnetic effect is mounted on a flexible printed wiring board at a position corresponding to each of the permanent magnets mounted on each of the character rings, so as to correspond to each of the character rings. Glued to the shaped block,
The numbering device with a position detecting function according to any one of the above (1), (2), (3), and (4), wherein a magnetic sensor block for detection is formed.

[0015]

According to the structure of the present invention as described above, the magnetic flux density of a specific character ring to be detected by each magnetic sensor is increased, so that the normal / abnormal position of the character ring can be reliably detected.

[0016]

Embodiments of the present invention will be described below in detail with reference to the drawings based on an embodiment.

[0017]

EXAMPLES showing an embodiment illustrating the FIG. 1 to FIG. FIG. 1 is a diagram showing the essential components of the position detection numbering device of the present embodiment.
Part (a) is a perspective view of a magnetic metal fitting with a projection,
(B) is a perspective view of a printed circuit board for each magnetic sensor.
Each is assembled in the direction of the dotted arrow. FIG. 2 is an explanatory diagram of the magnetic material projection effect.

[0018] (Configuration) FIG. 1 (a), in (b), 5 is a projection with magnetic metal having the projections 6 in each of the character wheel corresponding positions.
Reference numeral 7 denotes a printed circuit board, 8 denotes through holes for avoiding the respective protrusions 6 of the magnetic metal fitting 5, and each magnetic sensor 4 is indicated by a broken line.

(Effect) That is, in the embodiment of the present invention, each permanent magnet (magnet)
The numbering device using the character wheel 1 fitted with a 2, a magnetic fitting 5 of the flux with the guide projection 6 corresponding to the position of the permanent magnet 2, as shown in FIG. 1 (a), FIG. 1 (b)
And a magnetic sensor printed board 7 provided with through holes 8 for avoiding the projections 6 of the metal fitting 5 as shown in FIG. The data is sent to the data tally judging unit 12 shown in FIG.
The data totaling determination unit 12 sends the determination result to an external controller 13 (not shown). External controller 13
Is to output an error display and a control signal to the printing press 14 from the determination result.

As shown in FIG. 2 , the effect of each of the magnetic projections 6 allows the magnetic flux to be concentrated on the magnetic sensor 4 mounting portion, so that the detection voltage of the magnetic sensor 4 rises dramatically. The effect is more effective when the tip of the projection 6 is closer to the back of the magnetic sensor 4.

Further, as shown in FIG. 3 , the main part of the single ring 1 of the numbering device frame 9, which is a magnetic material, has a small pitch between adjacent magnets. In the case where the influence is large, the height of each magnetic projection 6 is selected at the expense of the rise of the detection voltage of the magnetic sensor 4, so that the magnetic flux perpendicular to the magnetic projection 6 penetrates the magnetic sensor 4. Work to get close to zero. This makes it possible to minimize the influence of both adjacent magnets 2 as compared with the conventional example of FIG.
From the problem of the influence of the magnetic flux 3 from the motor.

(Other Embodiments) Further, as shown in FIG. 4 , a flexible printed wiring board 7a is used as a substrate on which the magnetic sensor 4 is mounted, and a magnetic body is mounted in accordance with the shape of each target ring 1. Hardware 1
By making 0 and pasting it on it, 1
The detection of the magnetic flux 3 of the permanent magnet 2 at a plurality of locations per wheel can be easily realized, and the reliability of the detection accuracy can be improved.

FIGS. 5 (a) and 5 (b) show two examples (6 and 6a) in which the height of the magnetic projection is different in the case of a five-shaped ring.
FIG. 4 is an explanatory diagram showing a main part relationship diagram of FIG.

(Control Function Configuration Block Diagram) FIG. 6 is a block diagram showing a control function configuration according to the embodiment of the present invention, a part of which is described above. As is clear from the figure, the outline configuration will be briefly described. Reference numeral 11 denotes a position detection board, 12 denotes a data tabulation judging unit, 13 denotes an external controller, and 14 denotes a printing machine.

Each magnetic sensor 4 is provided with a data total
Is switched to the magnetic sensor 4 for the predetermined ring 1 by the sensor selection switching unit 15 according to the sensor selection signal from the sensor unit. Input to 12.

The data tabulation unit 12 communicates with the external controller 13, and the external controller 13 exchanges control signals with the printing machine 14.

[0027]

As described above, according to the present invention,
Since the magnetic fitting with each projection is used, during operation using the numbering device in the printing press, the magnetic flux to the magnetic sensor of the permanent magnet for detecting the untimely carry-up error of each character ring is adjacent. The magnetic head is not affected by the magnetic flux leakage from other permanent magnets, and the detection effect can be surely exerted.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a position detection numbering device according to an embodiment .
View, (a) Perspective view of magnetic body with projection , (b) Magnetic
Perspective view of printed circuit board for sensor

FIG. 2 is an explanatory view of a magnetic projection effect.

FIG. 3 is an explanatory view of the effect of reducing the influence of magnetic flux from an adjacent permanent magnet.

FIG. 4 is an explanatory view of another embodiment.

FIG. 5 shows two examples with different projection heights

FIG. 6 is a block diagram of a control function configuration.

FIG. 7 shows an example of a conventional error detection device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 ring 2 permanent magnet (magnet) 3 magnetic flux 4 magnetic sensor 5 magnetic metal fitting with projection 6 projection 7 printed board 7 a flexible printed wiring board 8 through hole 9 numbering device frame 11 position detection board 12 data totaling and judgment unit 13 external controller 14 Printer

──────────────────────────────────────────────────続 き Continued on the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B41K 1/16 B41K 3/10 G01B ⁷ /00-7/34

Claims (5)

(57) [Claims] A magnetic metal fitting having projections for converging magnetic flux from each permanent magnet attached for detecting the position of each character ring of a numbering device frame to each magnetic sensor on a magnetic detection circuit board. A numbering device with a position detection function, wherein the numbering device is attached to the frame . 2. A magnetic metal fitting having a projection for reducing the influence of magnetic flux leaking from an adjacent permanent magnet is attached to each of the character rings with permanent magnets for position detection arranged in parallel at a narrow interval. The numbering device with a position detection function according to claim 1. 3. A magnetic metal fitting having a projection for converging a magnetic flux from a permanent magnet attached for detecting the position of the character ring to each of the magnetic sensors is fixedly positioned on the circuit board for magnetic detection. The numbering device with a position detecting function according to claim 1, wherein the numbering device is used as a pin. 4. The simplification and miniaturization of the circuit board on the numbering device by providing a data processing circuit on a rotary shaft of a printing press. A numbering device with a position detection function according to any one of the above. 5. A magnetic sensor for detecting magnetism, utilizing the magnetic effect, is mounted on a flexible printed wiring board at a position corresponding to each permanent magnet mounted on each of the character rings, and is provided for each of the character rings. 5. The numbering device with a position detection function according to claim 1, wherein the numbering device is bonded to a block having a shape to form a magnetic sensor block for detection.