JPH0329487B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application and Overview of the Invention] The present invention relates to a punching device for punching out parts to be punched arranged at unequal intervals on a blank sheet, and particularly to a conveying device for the blank sheet. For example, it can be used in an apparatus for punching a card from a rectangular original plate on which a large number of printing parts corresponding to a single card are arranged.

[Prior art and its problems] As a punching device of the type described above, one disclosed in Japanese Patent Application Laid-open No. 144995/1983 has already been proposed.

In this case, printed parts 1, 1, which correspond to a single card and are to be punched, are arranged vertically and horizontally on the original plate A, as shown in Fig. 1, and from this, only the printed parts are punched. It is something to remove.

Further, marks such as registration marks 11, 11 provided to match the printing parts 1, 1 of the original plate A are detected by a detection device such as a mark sensor, and the transfer stop of the original plate transfer device is controlled by the output of this detection device. It consists of

That is, the detection device is provided to coincide with a punching die consisting of a combination of a punch and a die, and a detection device such as a mark sensor detects the point in time when the punching die and the registration mark 11 coincide with each other, and the transfer device is stopped.
A system is adopted in which the punching device is operated during this stop period.

In the above-mentioned conventional device, even when the pitches in the transport direction of each printing section 1, 1 are not constant, the printing sections 1, 1 as the section to be punched are punched out in accordance with the unequal pitch.

However, in this conventional method, the accuracy of the transfer pitch is insufficient, and there is a problem that the part to be punched and the punching die such as a punch or die of the punching device do not match accurately.

One of the causes of this is the inertial force in the transfer direction when the transfer device is stopped. That is, when the transfer device is in operation, the operation of the transfer device is stopped by an instantaneous detection output from the detection device, so that a shift occurs due to the inertial force of the transfer device in the transfer direction.

In this regard, in the above-mentioned conventional device, since a crank mechanism is employed as the transfer force transmission means of the transfer device, the above-mentioned deviation is alleviated. This is because when converting constant speed rotational motion into linear motion, the speed in the transfer direction at both the top and bottom dead centers is extremely slow, and moreover, the transfer is stopped near the dead centers.

However, the speed near the dead center is not zero, but there is a certain speed, so the deviation does not decrease extremely.

In addition, the cause of the deviation is a delay in the signal in the signal transmission path from when the detection device detects the stop timing to when the transfer device completes stopping, and an operation delay due to passing through each operating section. may not be constant.

Due to both of these reasons, the above-described deviation cannot be set sufficiently small in the above-mentioned conventional device, resulting in insufficient precision in the punching position.

[Technical Problems] The present invention is characterized by ``transferring an original plate intermittently by a transfer device, punching out the parts to be punched arranged on the original plate with a punching die while the original plate is stopped, and after punching is completed, the original plate is transferred by the transfer device. In this device, even if the parts to be punched are arranged at unequal intervals, in order to accurately punch through the parts to be punched, even if the parts to be punched are arranged at unequal intervals, The technical problem is to enable the original plate to be transferred by setting in advance a transfer distance that corresponds to the distance between the punched parts arranged in the same manner.

* Regarding the first invention [Technical means] The technical means of the first invention taken to solve the above technical problem is "a preceding punched part corresponding to a punching die and a subsequent punched part". A measuring device that measures the distance from the cutting die on the front side of the punching die in the original plate transfer direction, a drive device that determines the amount of one operation based on the output from this measurement device, and one operation amount of this drive device. A transfer device that moves the original sheet a predetermined distance according to The operation timing of the control device is set so that the driving device is operated and the transfer operation of the transfer device is started after the measurement operation progresses and the punching operation of the punching die is completed.

[Operation] The above technical means of the first invention operates as follows.

The distance between the preceding part to be punched and the succeeding part to be punched out is measured when the blank is stopped, and a transfer distance corresponding to this distance is set prior to the transfer operation.

Therefore, when setting the original sheet on the transfer device, if the first part of the original sheet to be punched is set in correspondence with the measuring device and the punching device is put into operation, the punching die will operate idle and the measuring device will not be able to measure it. The action progresses. Thereby, the distance between the punching part (preceding punched part) and the punching die installation part is measured. Next, after the operation of one step of the punching die is completed, the transfer operation proceeds at a predetermined timing, but this transfer distance is based on the measurement result, and the position where the preceding punched part matches the punching die is determined. The transfer device stops when the paper is transferred to , and then the punching die starts a punching operation. At this time, at the same time, the distance between the preceding punched part and the subsequent punched part is measured by the measuring device. Then, the next unit transfer distance is set prior to punching.

A transport that matches this setting is then performed,
The latter part to be punched is punched out when the original plate is stopped during the next punching operation. At this time, the distance between the subsequent parts to be punched is measured, and if the above operation is repeated, each part to be punched will be punched out successively.

[Effects] Since the first invention has the above configuration, it has the following unique effects.

Since the unit transfer distance between the preceding part to be punched and the subsequent part to be punched is measured when the original plate is stopped, the detection and measurement of the unit transfer distance is performed accurately in advance, and furthermore, the unit transfer distance can be accurately measured in advance, and the unit transfer distance can be adjusted to match this accurate measurement value. The next transfer distance is set. Therefore, the misalignment that occurs in the prior art is extremely reduced or eliminated, and the punching accuracy is improved. This is because no operation delay, signal transmission delay, etc. occur.

Furthermore, when setting a blank on which a large number of parts to be punched are arranged on the transfer device, even if the setting position is inaccurate, as long as the setting posture is accurate, the initial transfer will move the original plate to the first one. Since the positions of the part to be punched and the punching die are precisely matched, poor punching accuracy due to poor setting of the original plate can be prevented.

* Regarding the second invention [Technical means] Next, the technical means of the second invention is "the distance from the punching die installation part to the subsequent part to be punched, and the distance between the part to be punched and the part to be punched." a measuring device that measures the unit transfer distance between the subsequent punched part and the subsequent punched part on the front side of the punching die in the original plate transfer direction; and a storage device that stores the measured value from the measuring device or an output signal corresponding thereto. , a drive device whose one-time operation amount is determined by an output from a control device equipped with this storage device, and a transfer device which moves the original by a predetermined distance according to the one-time operation amount of this drive device. It is equipped with a control device that sets the operation timing of each of the punching die, the transfer device, and the drive device, so that the measurement operation by the measuring device progresses when the original plate is stopped during punching, and the punching die is driven after the punching operation is completed. The operation timing by the control device is set so that the device operates and the transfer operation of the transfer device proceeds.

[Operation] The technical means of the second invention operates as follows.

The original plate on which a large number of parts to be punched are arranged is sequentially and intermittently transferred to a punching die installation part by a transfer device.

Here, the transfer device, ie, the blank, is kept stationary while the punching die is in operation, but the first part to be punched is properly defined by preliminary adjustment (for example, by setting the blank in the device). . Then, at the same time as the punching device starts operating, the distance from the punching die to the first punched part and the distance from the punched part to the next punched part are measured with the original plate stopped at the time of startup, and are stored in the memory. A signal from this storage device is input to the drive device of the transfer device, and the original sheet is transferred by a constant stroke. As a result, the preceding punched portion matches the punching die, and the punching operation proceeds when the transfer is completed. At this time, since the transfer device is in a stopped state, the distance (unit transfer distance) between the subsequent punched part and the subsequent punched part is measured at the same time.
be remembered.

Next, the next moving distance is set by the control device based on the unit moving distance stored in the previous process, and the subsequent part to be punched matches the punching die by interlocking the driving device and the moving device.
The original plate will be transferred.

Thereafter, the drive device is started in response to a signal indicating completion of punching of the preceding punched portion, moves the transfer device by a distance corresponding to the unit transfer distance, and then stops.

As a result, the next part to be punched coincides with the punching die, and the punching process by the punching die proceeds sequentially, and at the same time, the above-described predetermined measurement operation proceeds.

Thereafter, as the above operations progress, the operations of ``transfer stop punching and measurement transfer'' are repeated.

[Effects] Since the second invention has the above configuration, it has the following unique effects.

As in the first invention described above, even when the arrangement of the parts to be punched is uneven, the parts to be punched can be punched accurately;
The punching process of each punched part can be performed intermittently and continuously. Furthermore, it becomes easier to set the original plate on the transfer device.

Furthermore, since the measuring device measures the distance to the subsequent punched part located on the front side of the punching die and the distance between the subsequent punched part and the subsequent punched part, that is, the unit transfer distance, the measuring device The mounting position can be set away from the punching die installation position, allowing accurate measurement even when the die is large. In other words, it is possible to prevent the inconvenience of being unable to measure the position of the part to be punched out due to a large punching die or the like getting in the way.

[Example] Hereinafter, an example of the present invention will be described based on the drawings.

This embodiment, like the conventional example, is implemented in an apparatus for punching cards from an original A.

In this case, a combination of an image sensor 2 and an arithmetic device 3 is used as the measuring device, and the sensor is attached to a frame 41 that supports a punch 4 of a punch type, and its detection part 21 is connected to the upper surface of the original plate A. is facing. This detection part is located at a reference position a certain distance from the punching die installation part,
This distance is the printing part 1 as the part to be punched of the original plate A.
The average distance from the punching die to the register mark 11 provided in the middle of the next printing section 1 is made to correspond to the average distance when one of the blanking die accurately matches the punching die.
This corresponds to the average transport distance.

The image sensor 2 measures and detects the amount of deviation of the point or line to be detected from the reference position.
The distance between the mounting position of the image sensor 2 and the punching die becomes a reference distance.

Therefore, the output from the image sensor 2 becomes a signal corresponding to the amount of deviation of the registration mark 11 from the reference distance.

On the other hand, the transfer device serves as an original plate holding device, and includes a clamp 51 and a feed screw 5 screwed into the clamp.
2, and a pulse motor 53 serving as a drive device that rotationally drives the feed screw 52. Rotation corresponding to the rotational speed of the output shaft of the pulse motor 53 is transmitted to the feed screw 52, thereby causing the clamp 51 to rotate against the original plate A. It moves straight along with the vehicle.

The output signal of the image sensor 2 is input to a calculation device 3, which calculates the next transfer distance from the relationship with the reference distance, and the output signal from the calculation device 3 is used as a drive pulse corresponding to the transfer distance. The signal is input to the pulse motor 53. In some cases, the output from the arithmetic device 3 may be input to the pulse motor 53 via a conversion device.

The pulse motor 53 operates according to the number of pulses in response to input pulses, and the timing of this operation is related to the punching operation, and the transfer operation is started after the punch 4 completes the punching operation. For this purpose, the drive pulse may be inputted by a signal from a switch or the like that is linked to the operation of the punch 4.

In the above embodiment, the image sensor 2 detects the registration mark 11, but when punching a card equipped with the magnetic tape 12, the magnetic tape 12
It is also possible to detect the magnetic tape, and in this case, the reference distance is set in accordance with the placement position of the magnetic tape.

In the above-mentioned embodiment, the distance between the preceding punched part that matches the punching die and the succeeding punched part is measured; It is also possible to measure the distance from the subsequent punched part. In this case, two image sensors are used, one image sensor 2a is provided in the same manner as in the first embodiment, and the other image sensor 2a is provided in the same manner as in the first embodiment. The image sensor 2b is provided a unit distance away from the image sensor 2a.

When the output signals from both image sensors 2a and 2b are inputted to the arithmetic unit 3, the image sensor 2a detects the distance from the preceding punched part corresponding to the punching die to the punched part located at the subsequent position. The distance and the interval (unit transfer distance) between the part to be punched at the subsequent position and the part to be punched at the subsequent position are calculated, and the output signal from the calculation device corresponds to the distance or interval. .

This output signal is temporarily input to the memory device 7, and when the subsequent punched part matches the punching die, the output from the memory device is input to the pulse motor 53 via the converter.

Thereby, the operation is similar to that of the first embodiment. Particularly in the case of this embodiment, since both the measuring device and the part to be measured can be set at a position away from the punching device, accurate measurements can be made even if the punching device is large. In other words, it is possible to prevent inconveniences in which a punching device such as a punching die gets in the way and makes it impossible to perform measurements.

Incidentally, when punching out each printed part in this horizontal row from a machine having a plurality of printed parts 1, 1 in the horizontal direction as shown in FIG. 1, the printed parts 1, 1 provided in this horizontal row 1, and these punching dies are set to operate simultaneously or integrally, but even in this case, only one measuring device such as an image sensor is required. The registration mark 11 or the magnetic tape 12 in the center may be the detection target.

This is because normally, the arrangement pitch of the printing section has an extremely small deviation in the horizontal direction, but a large deviation in the vertical pitch direction.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the original plate A to which the present invention is implemented, and FIG. 2 is an explanatory diagram of the main parts of the first embodiment of the present invention.
Fig. 3 is a block diagram of the main part, Fig. 4 is an explanatory diagram of another type of original plate A, Fig. 5 is an explanatory diagram of the main part of the second embodiment, and Fig. 6 is a block diagram of the main part. In the figure, A...Original plate, 1...Printing section, 2...Image sensor, 3...Arithmetic unit, 4...Punch, 6...
Conversion device, 7... Storage device.

Claims (1)

[Scope of Claims] 1. An original plate is intermittently transferred by a transfer device, parts to be punched arranged on the original plate along the transfer direction are punched out by a punching die while the original plate is stopped, and after punching is completed, the parts to be punched are punched by the transfer device. In a device that transports an original sheet a predetermined distance and sequentially punches out parts to be punched,
A measuring device measures the distance between the preceding punched part that matches the punching die and the following punched part on the front side of the punching die in the original plate transport direction, and the amount of one operation is determined by the output from this measuring device. a drive device that moves the original sheet a predetermined distance according to the amount of one-time operation of the drive device; and a control device that sets the operation timing of each of the punching die, measuring device, and drive device. and an operation by the control device such that when the original plate is stopped during punching, the measurement operation by the measurement device progresses, and after the punching operation of the punching die is completed, the drive device operates and the transfer operation of the transfer device proceeds. Punching device with set timing. 2. A measuring device that measures the distance from the punching die installation part to the succeeding part to be punched, and the unit transfer distance between the subsequent part to be punched and the succeeding part to be punched, on the near side of the punching die in the original plate transport direction. a storage device that stores the measurement value or an output signal corresponding to the measurement value from the measurement device; and a drive device in which the amount of one operation is determined by the output from the control device equipped with the storage device. It is equipped with a transfer device that moves the original sheet by a predetermined distance according to the amount of one-time operation of this drive device, and a control device that sets the operation timing of each of the punching die, measuring device, and drive device. A punching device in which the operation timing by the control device is set so that the measurement operation by the measurement device progresses when the original plate in the middle is stopped, and the drive device operates after the punching operation of the punching die is completed and the transfer operation of the transfer device proceeds. .