JPS6156830B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a card punching mechanism that enables simple and highly accurate punch hole positioning processing.

In conventional mechanism control for punching holes in cards, the punching mechanism was operated while the card was held completely still by a stopper or brake control. It took time to process the process and it was difficult to process it in a short time. Furthermore, the use of a stopper mechanism has the disadvantage of complicating the structure and forcibly stopping the card, which may result in damage to the card. On the other hand, braking control is difficult to accurately punch holes at predetermined positions when disturbances such as slips occur due to friction fluctuations in the card transport system or environmental changes such as temperature and humidity. There were flaws.

This invention was made to eliminate the above-mentioned drawbacks, and when it is detected that the rotational speed of the card transport motor has decreased to a predetermined value due to the braking output, the punching mechanism is driven by sending out a detection signal. , the punching process is performed before the card comes to a complete standstill. This invention will be explained in detail below.

An embodiment of the present invention will be explained by taking a magnetic card type public telephone as an example. Magnetic card public telephones use magnetic cards instead of coins.The magnetic card has a predetermined number of calls recorded in advance, and the magnetic card is inserted into the card slot of the public telephone. The data is imported internally and subtracted from the remaining data on the magnetic card according to the actual number of calls, and the data is updated and recorded on the magnetic card before being returned.In order to make it easier for users to understand the remaining data, A visual indicator is provided by punching a hole at a predetermined position on the magnetic card as a guide to the remaining power. At this time, the hole that indicates the remaining power is
In order to place the magnetic card in a predetermined position, accurate stopping braking and punching control of the magnetic card are required.

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention. In this figure, 1 is a card transport motor, 2 is a motor drive unit, 3 is a start signal,
4 is a magnetic card, 5 is a detection element, 6 is a position detection section, 7 is a position selection section, 8 is a counter, 9 is a pulse generation section, 10 is a waveform shaping section, 11 is a pulse width detection section, 12 is a punch mechanism drive 13 is a punch mechanism, and SW ₁ to _{SW o} are switches.

Next, the operation will be explained with reference to the waveform diagrams of each part in FIGS. 2a to 2g.

When the activation signal 3 is given to the motor drive unit 2 that drives the motor 1, the motor drive unit 2 generates a normal rotation output, and in response, the motor 1 rotates in the normal direction, and the magnetic card 4 is transported in the normal direction. . The relationship between the rotational speed of the motor 1 and time is as shown in FIG. 2g, and the waveforms at each part a to f in FIG. 1 correspond to those in FIG. 2 a to f.
Now, when the magnetic card 4 reaches the detection position, the magnetic card 4 is detected by the detection element 5 and the position detection section 6, and a detection output a is generated, which is transmitted to the position selection section 7.
sent to. Next, since the switches SW ₁ to W _o are selectively turned on according to the predetermined hole positions of the magnetic card 4 by a separate control unit, the states indicated by these turns are transferred to the code conversion circuit. A position selection section 7 composed of a gate circuit, etc.
converts it into a code value indicating the count value and sends it to the counter 8. As the counter 8, for example, a presettable subtraction counter is used, and is preset by a code indicating the counter value from the position selection section 7.

On the other hand, a pulse generator 9 such as a tachometer pulse generator is connected to the motor 1, and generates a pulse signal b according to the rotational speed of the motor 1.
Since the clock input of the counter 8 is given through 0, the counter 8 performs subtraction according to the pulse signal b, and when the count value becomes 0, an output c is generated, which is sent to the motor drive unit 2 and the pulse width It is given to the detection unit 11. Then, the motor drive section 2 outputs d
is converted from the normal rotation output F to the reverse rotation output B, and this is applied to the motor 1 as a braking output, so the motor 1 starts decelerating, and the pulse width T _p of the pulse signal b increases accordingly. Further, the pulse width detection section 11 is composed of a monostable multivibrator driven by the change point of the pulse signal b, a gate circuit, etc.
After the motor drive unit 2 generates a braking output due to the output c, it enters the operating state, and the pulse width T of the pulse signal b
_p is monitored, and when it exceeds a predetermined value, a detection output e is generated, thereby stopping the output d of the motor drive unit 2. On the other hand, the punch mechanism drive section 12
After the detection output e is sent out, a punch signal f is sent out after a delay time _Td has elapsed, and the punch mechanism 13 is operated. During this time, the magnetic card 4 does not stop completely due to the inertia of the motor 1 and the transport mechanism, but moves slightly. Therefore, if the predetermined monitoring value T of the pulse width T _p and the punch signal delay time T _d are determined according to the inertia of the motor 1 and the transport mechanism, the position detected by the detection element 5 can be recorded on the magnetic card 4. As a reference, the holes are accurately punched at predetermined positions determined by the ON states of the switches SW ₁ to SW _o . However, if the forward rotation output F and reverse rotation output B are alternating current or pulse signals, direct current may be sent as the braking output and electromagnetic braking may be used. Depending on the conditions, the counter 8 may be omitted and a separate circuit may be used. Various modifications are possible, such as providing a signal corresponding to the output c.

It goes without saying that the present invention is applicable not only to the magnetic card 4 but also to hole positioning and punch mechanism control when punching various media such as cards, pieces of paper, and tickets.

As explained above, in this invention, control output is stopped and punch signals are sent in accordance with the deceleration state of the card transport motor. There is no shift in the position of the punch hole due to shift of the card due to the movement of the card, the hole can be punched accurately at a predetermined position, and the objective can be achieved with a simple structure.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a timing chart showing the waveforms of various parts and the rotational speed of the motor in FIG. In the figure, 1 is a motor, 2 is a motor drive unit, 3 is a starting signal, 4 is a magnetic card, 5 is a detection element, 6 is a position detection unit, 7 is a position selection unit, 8 is a counter, 9 is a pulse generation unit, 10 is a waveform shaping section, 11 is a pulse width detection section, 12 is a punch mechanism drive section, and 13 is a punch mechanism.

Claims (1)

[Claims] 1. In an information processing device using a card as a usage medium, a punching mechanism section that punches holes in the card, a rotation speed detection section of a card conveyance motor, and a rotation speed of the card conveyance motor reaches a predetermined value. and a control circuit that drives the punching mechanism based on the detection output of the rotational speed detector to perform punching before the card comes to a complete standstill. .