JPH03270899A - Punching device for card, etc. - Google Patents

Abstract

PURPOSE:To remove punching residue certainly by forming a punch pin in the form of a hollow cylinder, allowing the head of this cylindrical pin to open to the space bounded by a solenoid bobbin, moving core and stationary core, and spouting the compressed air in this space from the tip of the pin when a card is punched off. CONSTITUTION:When a solenoid 1 is out of operation, a moving core 4 is energized upward by a spring 5 and heaved through a punch pin 16. In this state, a space A is formed as bounded by the inner surface of a coil bobbin 2, a stationary core 3, and the moving core 4. When the solenoid 1 is operated, the moving core 4 is attracted to the stationary core 3, and the punch pin 16 is depressed by the undersurface to perform punching off. In this motion, the space A is compressed, and the compressed air comes into the punch pin 16 from its head opening 17 to pass through the hollow therein, and spouts out of an opening 18 at the pin bottom. The spouting force becomes maximum when the punching-off is ended, and residue 11 is discharged certainly from the die hole 12.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a punching device for punching cards such as magnetic cards with punch pins, and in particular, to a punching device that can reliably discharge punch scum generated by punching out of the device. The present invention relates to an improved punching device.

[Conventional technology]

In recent years, prepaid magnetic cards have become popular and are used for purchasing telephones, various types of tickets, and other widely distributed fields. In this magnetic card, small holes are sequentially punched using a punch pin depending on the degree of use.During the perforation, a solenoid acts as the card is used, and the movable iron core is attracted to the fixed iron core, and the driving force is used to push the pin toward the die. The extrusion is performed at the appropriate location on the card inserted into the card insertion part of the die of the punching device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS As a prior art, an example of a punching device currently used for punching such cards will be explained with reference to the accompanying drawings.

Figure 4 is an enlarged schematic cross-sectional view of a typical punching device currently in use.A movable iron core is driven by the action of a solenoid, and the punch pin is pushed downward by the driving force to punch a hole in a card. Indicates the condition.

As shown in the figure, the punch device includes a solenoid 1, a cylindrical fixed iron core 3 in the lower half inside the coil bobbin 2,
A cylindrical movable core 4 that is movable up and down is arranged in the upper half, and the movable core 4 is lifted by the upper surface of the head of a punch pin 6 that is urged upward by a spring 5. A cylindrical pin guide 7 is disposed inside the spring 5, and the guide 7 is firmly fixed to a bunch die 8 assembled below. The punch pin 6 is configured such that the cylindrical punch pin 6 is slidably fitted inside a cylindrical pin guide 7, and is guided by the guide 7 to perform accurate vertical movement.

When current flows through the solenoid 1 to form an electromagnet, the movable core 4 attracts the fixed core 3 against the spring 5 and pushes the punch pin 6 downward.

By this operation, the corresponding portion of the card 10 inserted into the card running groove 9 of the punch die 8 is cut by the tip end surface of the punch pin and the corresponding lower through hole of the bunch die, forming a punched small circular hole. . The cut small circular punch dregs 11 are discharged from the punch dregs discharge hole 12 of the die to the outside of the apparatus.

However, in such conventional devices, the punch chips cut by the punch pin are very small, and due to static electricity or oil and fat adhering to the surface, they sometimes adhere to the tip of the punch pin and get stuck between the punch pin and the card. There is a problem in that if the punch device becomes stuck and becomes unable to punch, or if the adhered punch particles fall into the card running groove, they will be scattered as foreign matter inside the machine in which the punch device is installed, causing malfunction of the entire device.

[Problem to be solved by the invention]

Therefore, an object of the present invention is to provide a perforation punch mechanism that does not cause the above-mentioned disadvantages due to punch scum. Another object of the present invention is to provide a punching device for cards, etc., which can be stably used over a long period of time.

[Means to solve the problem]

The present inventors conducted many prototype experiments on a perforation punch device that effectively solves the above problem, and as a result, they have developed a practically desirable punch device that reliably releases punch dregs from the device after each punch. .

That is, the present invention provides a perforation punch device that can punch a small hole in a card or the like by pushing a punch pin using the driving force generated by the action of a solenoid. The opening on the head side leads to the hollow.

opening into a substantially airtight space formed by the coil bobbin of the solenoid, the movable core, and the fixed core, and the movable core attracts the fixed core to push out the punch pin;
The gist of this device is a device for punching holes in cards, etc., which is configured so that when the tip of the pin penetrates the card, etc., the compressed air in the space passes through the hollow of the punch pin and blows out from the opening at the tip of the punch pin. It is.

The perforation punch device of the present invention having the above configuration uses a cylindrical punch pin instead of the conventional cylindrical punch pin, and also makes the space formed by the solenoid coil bobbin, movable iron core, and fixed iron core substantially airtight. The technical feature is that the opening on the head side of the cylindrical punch pin is opened in the space.

The punch pin used in the device of the present invention, which can punch small holes in cards, etc., has a structure in which a hollow cylindrical pin and a head having an outer diameter larger than the outer diameter of the pin are integrally formed. Usually, the punch pin has an outer diameter of 1. About .2m.

It consists of a hollow cylindrical pin body with an inner diameter of about 0.6 m and a length of about 10 to 20 m, and a head part with a diameter of about 2 to 3 m11. It communicates with the hollow part and has a configuration that allows compressed air formed by compressing the space within the punch device to be released to the outside from another opening at the lower end of the pin. Such pins are provided, for example, in a rigid metal such as stainless steel. This pin is slidably fitted inside a cylindrical pin guide that is firmly attached to the bunch die, and accurately drills at a predetermined position of the force. Although the head of the punch pin may be formed to fit on the inner surface of the fixed core, it is usually practical to form it with an outer diameter slightly smaller than the inner diameter of the fixed core. When the bunch pin is formed in a fitted shape, the opening of the head of the bunch pin into the space is made at or near the shoulder (ridgeline) of the head, but the opening is made to have a slightly smaller outer diameter. In this case, one can be opened on the side of the head. Such a head opening may be, for example, a through hole that passes through the axis of the cylindrical head and opens at right angles to the central part of the cylindrical head, or an opening to the shoulder that extends from the side opening to the upper surface. It is also possible to provide a groove on the side surface leading to the upper surface of the head, or to form a through hole along the axis to the upper surface of the head, and form a groove for an air flow path from there to the side surface on the upper surface of the head. As a method of forming the air flow path on the upper surface of the head, it is also practical to join C-shaped metal plates corresponding to the upper surface by resistance spot welding or the like. Alternatively, the ridgeline shoulder of the head may be slightly hollowed out and an opening may be made there.

The irregularly shaped punch pin according to the present invention can be formed by casting, but since it is an extremely small member, the cylindrical pin and the head are made separately, and they are integrated by laser welding, screwing, etc. Generally, a method is advantageously employed.

In such a punch pin, the lower side of the protruding peripheral edge of the pin head is lifted upward by a spring based on a bunch die, which is placed around the outside of the bin guide in which the pin is guided in a fit-in manner. , the movable core is also pushed upward by the bias.

This normal sand-like state occurs when a current flows through the solenoid and an electromagnet is formed in response to the use of the card.

The movable iron core is attracted to the fixed iron core and is driven toward the fixed iron core to push down the bunch pin, and the lower end of the pin passes through a pair of upper and lower corresponding through holes formed in the card running groove of the punch die and guides the card into a predetermined position. A small circular cut hole is formed in the part.

In the device of the present invention, a substantially airtight space is formed by the coil bobbin of the solenoid, the movable core fitted on the upper inner surface thereof, and the fixed core disposed in the lower half of the coil bobbin, and the movable core It is important to configure the structure so that when the fixed iron core is attracted to the fixed iron core by the electromagnetic action of the solenoid, the air in that space is compressed. The compressed air passes through the hollow part of the cylindrical punch pin and blows out from the tip opening of the pin, and the small circular card part, that is, the punch scum, cut by the pin is blown out by the jet of compressed air. It is released from the bottom of the punch die to the outside of the device. Therefore, in the present invention, "substantially airtight" means airtightness in which the air in the space is compressed by the movement of the movable core, and the compressed air can blow punch scum out of the device, A slight escape of air from the sliding gap between the coil bobbin and the movable iron core is allowed and included.

[Effect]

The perforation punch device of the present invention reliably and effectively ejects the punch dregs out of the device without attaching a special punch dregs discharging member to the device, so that the dregs do not adhere to the bunch pin or remain inside the device. There will be no inconvenience at all.

〔Example〕

The perforation punch device of the present invention will be explained in more detail with reference to the accompanying drawings.

1 and 2 are enlarged schematic sectional views for explaining the implementation state of the apparatus of the present invention. Also.

FIG. 3 is a longitudinal sectional view of a different example of a bunch pin used in the apparatus of the present invention.

FIG. 4 is an enlarged schematic sectional view of a conventional punching device.

FIG. 1 is a sectional view of the normal stationary state in which the solenoid is not activated, and FIG. 2 is a sectional view in which the solenoid is activated.

It is a sectional view at the moment when drilling is completed.

As seen in the figure, inside the coil bobbin 2 of the solenoid 1, a cylindrical fixed core 3 is arranged and fixed in the lower half thereof, a cylindrical movable core 4 is arranged in the upper half, and a spring 5
It is lifted upward via a cylindrical punch pin 16 which is urged upward by a cylindrical punch pin 16. A cylindrical pin guide 7 is disposed inside the spring 5, and the lower end of the guide 7 is firmly fixed to a bunch die 8 combined with a solenoid. Furthermore, the cylindrical pin of the punch pin 16 is slidably fitted inside the cylindrical bin guide door, and is configured to perform accurate vertical movement under the guidance of the guide 7.

In the stationary state shown in the drawing, the coil bobbin 2 of the solenoid 1
A cylindrical fixed iron core 3 fixed to the inner surface and the lower half of the
A space A is formed in the upper half of the space A, which is surrounded by a cylindrical drive core 4 that is suctionably held by the fixed core.

In this state, when the card is used and current flows through the solenoid 1 to create an electromagnet, the movable core 4 attracts the fixed core against the bias of the spring 5, as shown in FIG. The card is punched by pushing down the punch pin 16 on the bottom surface. In this operation, the space A is compressed.

The compressed air thus formed flows from a head opening 17 opened on the side of the head of the cylindrical punch pin 16 through the hollow passage of the pin in the direction of the arrow, and is ejected from the lower end opening 18 of the pin. Ru. This jet is caused by the resistance of the air flow path and the pressure increases at the moment the card part is cut, so when the cutting is completed, compressed air is released instantly with a large jet force, and the pin shavings 11 are released from the die hole. 12, the liquid is ejected from the device vigorously and reliably.

In this manner, the punch device of the present invention uses the hollow portion of the cylindrical body pin to discharge the punch scum from the cut card to the outside of the device, so that inconveniences due to malfunction are substantially eliminated.

In the above punch pin, the head opening 17 is formed at the center position on the side surface of the head in FIG. A head shoulder opening 17' is formed with a groove for guiding air. In addition, Figure (c) shows that an open hole is formed at the axial position of the upper surface of the head, and an opening 17''' to the space A is formed at the shoulder of the head due to the air flow groove in the radial direction on the upper surface. This is an example of the formation of

〔Effect of the invention〕

The perforation punch device of the present invention does not leave small punch scum inside the device, and there is extremely little risk of the device itself malfunctioning, including failure to punch, so the device itself has a long lifespan and has high practical value. However, it is highly desirable industrially.

[Brief explanation of drawings]

Figures 2 and 2 are enlarged schematic cross-sectional views for explaining the implementation state of the device of the present invention, and Figures 3 (a) to (c) show different examples of punch pins used in the device of the present invention. FIG. Codes in the diagram: 1... Solenoid 2... Coil bobbin 3...
・Fixed core 4...Movable core 5...Spring 6...Cylindrical punch pin 7...Bin guide
8...Punch die 9...Card running groove 10...
・Card 11... Punch scraps 12... Die hole 1
6...Cylindrical punch pin 17.17', 17''...Punch pin head opening 1
8...Lower opening of the pin A...Space Figure 1 Figure 2 Procedural amendment (Fuction (a) No. (b) Curved diagram (C) 1. Indication of the case 1990 Patent Application No. 71186 No. 2, Punch device for invention title cards, etc. 3, Relationship with the case of the person making the amendment Patent applicant address: Nagai Building, 4-4-11 Nihonbashi Honmachi, Chuo-ku, Tokyo Name: Nikkoshi Co., Ltd. 4, Agent: 103 Address: Nagai Building, 4-4-11, Nihonbashi Honmachi, Chuo-ku, Tokyo [Telephone: Tokyo (270) 0858] Draft date: June 11, 2015 7. Contents of amendment (1) Specification, page 13, number 7 "..." written on the line
... is a vertical cross-sectional view. ” and then add the following: "Also, Figure 4 is an enlarged schematic cross-sectional view of the currently used punching device."67

Claims (1)

[Claims] 1. In a perforation punch device that can punch a small hole in a card, etc. by pushing a punch pin using the driving force generated by the action of a solenoid, a hollow cylindrical pin is used as the perforation punch pin, and the head of the cylindrical pin communicates with the hollow. The side opening is opened into a substantially airtight space formed by the coil bobbin of the solenoid, the movable iron core, and the fixed iron core, and the movable iron core attracts the fixed iron core and pushes out the punch pin, and the tip of the pin punches the card, etc. A perforation punch device for a card or the like, which is configured so that compressed air in the space passes through the hollow of the punch pin and blows out from the opening at the tip thereof when the punch pin is penetrated.