JPH035857B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a document cutting machine, and particularly to a document cutting machine having an automatic paper feeding device that automatically feeds paper or documents to be cut to a cutting cutter roller, for example. Regarding cutting machines.

(Description of Prior Art) This type of document cutting machine
This is disclosed in Publication No. 36192, etc.

(Problems to be Solved by the Invention) In a conventional document cutting machine, if the cutter motor is stopped immediately when there is no paper in the automatic paper feeder, uncut paper remains on the cutting means, that is, the cutter roller, and the state Then, when I started the cutter motor, there was a problem that a large load was applied at startup.

Therefore, the main object of the present invention is to provide a document cutting machine in which at least no uncut paper remains in the cutting means.

(Means for Solving the Problems) Simply put, the present invention provides a paper feeding means for automatically supplying paper to be cut, and a cutting means for cutting paper supplied from the paper feeding means. , and a time difference stopping means for stopping the cutting means a predetermined time after the paper feeding means is stopped.

(Function) For example, when a document cutting machine is commanded to stop in response to a paper sensor detecting that there is no more paper to cut, first the paper feeding means and other parts other than the cutting means operate. will be stopped. The time difference stopping means then stops the cutting means after a predetermined time from the stopping of the sheet feeding means.

(Effects of the Invention) According to the present invention, the cutting means is not stopped until the last paper is supplied from the paper feeding means and is completely cut by the cutting means. This eliminates the problem of remaining cut paper.

The above objects, other objects, features and advantages of the present invention will become more apparent from the following detailed description of embodiments with reference to the drawings.

(Embodiment) FIGS. 1 and 2 are structural diagrams showing an embodiment of the present invention. Document cutting machine 10 includes a cutting unit 12, a paper feed unit 14, and a container unit 16. These units 12, 14 and 16, as best seen in FIG. 2, are designed to be individually separable and assembled into an integrated document cutter 10 for use.

An input port 18 is formed on the top surface of the cutting unit 12, into which documents or papers to be cut are input. As shown in FIG. 1, a pair of cutter rollers 20a and 2 are provided in the housing of the cutting unit 12 to cut paper input from the input port 18 and allow the cut paper to fall downward.
0b is stored. Cut rollers 20a and 2
A plurality of uneven blades extending in the circumferential direction are formed on the circumferential side of each of the rollers 0b in parallel to the width direction of the roller. Then, the blades of the two cutter rollers 20a and 20b mesh with each other, and the paper input from the input port 18 is cut or shredded along the traveling direction of the paper.

Paper scraps cut by the engagement of the cutter rollers 20a and 20b are dropped downward through a discharge port 22 formed below.

Note that one of the cutter rollers 20a and 20b is driven by a cutter motor 50 (FIG. 3).

A paper feed unit 14 mounted on the cutting unit 12 feeds sheets of paper to be cut one by one to the cutting unit 12, that is, cutter rollers 20a and 20b.
automatically supplied.

It includes a paper feed unit 14 and a pedestal 24 for holding papers 26 to be cut in a stacked or stacked manner. At a predetermined position in front of this pedestal 24, an arm 30 is rotatably supported by a shaft 28. A paper feed roller 32 is attached to the free end of the arm 30.
is attached so that it can rotate clockwise. This paper feed roller 32 is rotationally driven by a paper feed motor (not shown). Therefore, the paper feed roller 3
2 comes into contact with the topmost paper 26 stacked on the pedestal 24 due to its own weight, and when the paper feed roller 32 is rotated clockwise in this state, that paper is taken in.

The paper thus taken in is brought to double feed prevention rollers 34a and 34b. One of the double feed prevention rollers 34a is rotated in the same clockwise direction as the paper feed roller 32, and the other roller 34b has its outer peripheral surface in contact with the outer peripheral surface of the roller 34a and is rotated in the same clockwise direction. Double feed prevention rollers 34a and 34b prevent two or more sheets of paper from being fed in an overlapping state by paper feed roller 32 by the action of roller 34b, and feed out one sheet at a time.
Therefore, the aforementioned cutter rollers 20a and 2
0b, that is, it is possible to reduce the torque of the cutter motor 50, which will be described later.

The paper fed through the double feed prevention rollers 34a and 34b is brought to the conveyance path 36. The conveyance path 36 is curved in a substantially U-shape, and the paper discharge port 36a formed at the tip thereof is connected to the above-mentioned cutting unit 1.
It engages or fits into the input port 18 of No. 2. Therefore, the sheets of paper 26 fed out one by one from the double-feed prevention rollers 34a and 34b are supplied to the cutting unit 12.

Furthermore, an opening or slit is formed in the middle of the conveyance path 36, and this slit, together with the inclined surface 40, constitutes the manual feed port 38. That is, when feeding paper without using automatic paper feeding, if the paper is manually loaded or dropped into the manual feed slot 38, the paper will be fed into the paper output slot 36a and the paper input slot as in the case of automatic paper feeding. It is sent through port 18 to cutter rollers 20a and 20b. Therefore, in the paper feeding unit 14 of this embodiment, automatic paper feeding and manual paper feeding can be used together.

The paper waste cut finely by the cutter rollers 20a and 20b is dropped into the container of the container unit 16 from the above-mentioned outlet 22. If the container unit 16 is equipped with a packing device, the waste paper will be packed.

In this embodiment, a paper sensor 42 is further provided in conjunction with the paper holder 24 to detect whether there is any paper held thereon. This paper sensor 42 includes, for example, a photoelectric sensor consisting of a combination of a light emitting element and a light receiving element,
When the output from the paper sensor 42 is at a high level, it is known that the paper on the pedestal 24 has run out.

Referring to FIG. 3, such a document cutting machine 1
A microcomputer 44 is provided to control the overall functionality of 0. This microcomputer 44 is supplied with key operation signals from a start key 46 and a stop key 48, which are not shown in FIGS. 1 and 2, through an input port. The input port of the microcomputer 44 is further provided with a detection output from a paper sensor 42 provided in relation to the pedestal 24 in FIG. Therefore, the microcomputer 44 should know from the output of the paper sensor 42 that the paper is running out, and issue a stop command at that time. In this way, document cutting machine 1
If the paper sensor 42 is used to command the stop of 0, the stop key 48 is not necessarily required.

The output port of the microcomputer 44 is
A motor driver 50 is connected, and a cutter motor 52 and a paper feed motor 54 are connected to the motor driver 50. Therefore, both of these two motors 52 and 54 are controlled in terms of starting and stopping, speed, or direction of rotation by the microcomputer 44.

The operation of this embodiment will be described with reference to FIGS. 1 to 3 and based on FIG. 4.

When a power switch (not shown) is turned on, the microcomputer 44 first performs initial settings in the first step S1 shown in FIG. to judge. This start signal is input by turning on the start key 46 mentioned above. Therefore, when the start key 46 is turned on, the microcomputer 44 executes the following steps S5 and S7.
The cutter motor 52 and paper feed motor 54
A start signal is output to the motor driver 52 to turn on the motor driver 52.

Therefore, after that, the paper feed roller 32 starts rotating, and the paper 26 to be cut on the pedestal 24 is taken in one by one by the paper feed roller 32, and then passed through the double-feed prevention rollers 34a and 34b. , transport route 3
It is sent into 6. At the same time, the cutter motor 52 is also started, and the cutter rollers 20a and 20b are activated.
The function of the cutting machine is to cut the paper fed in this way.

Thereafter, in step S9, the microcomputer 44 determines whether the signal from the paper sensor 42 is at a high level, that is, whether there is no paper left on the pedestal 24 to be cut. If the paper is missing, i.e. the document cutting machine 10
If there is a stop command, the microcomputer 44
In the following step S11, the paper feed motor 54
A stop signal is output to the motor driver 50 to turn off the motor. At the same time, in the next step S13, the microcomputer 44 triggers or turns on a timer allocated to a predetermined area of the RAM (not shown).

Then, in step S15, the microcomputer 44 determines whether the timer has timed up. When it is confirmed that the timer has expired, the microcomputer 44 outputs a stop signal to the motor driver 50 to turn off the cutter motor 52 in the next step S17. In this way, the series of operations or operations ends.

As described above, in this embodiment, when there is no more paper on the pedestal 24, first the paper feed motor 54 is stopped, and then, after a predetermined period of time, the cutter motor 52 is stopped.
Since the cutter roller 2
0a and 20b are stopped a predetermined time after there is no more paper to cut. Therefore, at least the cutter roller 2
If the time is set long enough for the paper being cut by the cutter rollers 0a and 20b, preferably the last paper, to be cut, uncut paper will not remain in the cutter rollers 20a and 20b, that is, in the document cutting machine 10. There isn't.

Next, another embodiment of the invention shown in FIG. 5 will be described.

In this embodiment, a paper passage sensor 56 provided on the transport path 36, that is, on the downstream side of the paper feed roller 32, is used as the stop command in place of the paper sensor 42 of the previous embodiment. More specifically, as shown in FIG. 1, a paper passage sensor 56, which is a photoelectric sensor similar to the paper sensor 42, is provided downstream of the double-feed prevention rollers 34a and 34b. This paper passing sensor 5
The output signal of 6 is input to the microcomputer 44 through an input port, as shown in FIG.

Referring to FIG. 5, step S101 to step
Up to S107, steps S1 to S7 in Figure 4
is the same as Then, in step S109,
Microcomputer 44 determines whether the last paper has passed paper passage sensor 56. This may be done by, for example, detecting that the paper is running out if no detection output is input from the paper passage sensor 56 for a certain period of time or more. In this way, if it is confirmed that the last paper has passed the paper passing sensor 56, this serves as a stop command for the document cutter 10, and thus the microcomputer 4
4 is step S11 to step S17 in Figure 4 above.
Steps S111 to S117 are executed. Also in this embodiment, the cutter motor 52 is stopped a predetermined time after the last paper is used up, so the problem of uncut paper remaining is solved.

Next, still another embodiment of the invention shown in FIG. 6 will be described.

In this embodiment, a paper passage sensor 58 provided downstream of the cutting unit 12 is used as the time difference stopping means in place of the timer in the RAM of the previous embodiment. More specifically, as shown in FIG. 1, a paper passage sensor 58, which is a photoelectric sensor similar to the paper sensor 42, is provided downstream of the cutter rollers 20a and 20b. The output signal of the paper passage sensor 58 is input to the microcomputer 44 through an input port, as shown in FIG. In the microcomputer 44, this paper passage sensor 58
Based on the output of , it is known that the paper that has been cut has passed.

Referring to FIG. 6, step S201 to step
Up to S211, steps S1 to S11 in Figure 4
is the same as Then, in step S213,
The microcomputer 44 determines whether the cut paper has passed the paper passage sensor 58.
If it is confirmed that the cut paper has passed the paper passage sensor 58, the microcomputer 44 executes step S215, which is the same as step S17 in FIG. 4, and turns off the cutter motor 52. According to this embodiment, the cutter motor 52 is stopped after confirming that the last paper is completely cut, so the problem of uncut paper remaining is solved. That is, in the previous embodiment, whether or not the last paper was completely cut was determined speculatively by a timer that counted a predetermined time, but in this embodiment, it was confirmed as a fact by the paper passing sensor 58. The difference is that

Finally, another embodiment of the invention shown in FIG. 7 will be described. This embodiment is a combination of the previous embodiment of FIG. 5 and the embodiment of FIG. 6. That is, in the embodiment shown in FIG. 7, the fact that there is no more paper to cut is detected by the output of the paper passing sensor 56 in step S309, and a stop command is issued accordingly. In step 313, the paper passage sensor 58 detects whether or not the paper has been cut.

In addition, in the above-mentioned embodiment, the cutter roller 20a
and 20b, and a paper feed motor 52 that drives the paper feed roller 32 are provided separately. However, a common drive system that commonly drives the cutter rollers 20a and 20b and the paper feed roller 32 may be used. In this case, when unitizing as in the embodiment, it will be necessary to provide power transmission means such as gears, belts, and pulleys that can be separated and assembled. Then, first, the transmission of the driving force to the paper feed unit 14 is canceled, and
Depending on the time-up of the timer or the output of the paper passage sensor 58, the transmission of the driving force to the cutting unit 12 may be canceled or the motor may be stopped.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway illustrative view showing one embodiment of the present invention. FIG. 2 is an exploded external view of each unit of the embodiment shown in FIG. FIG. 3 is a block diagram showing the configuration of this embodiment. FIG. 4 is a flow diagram showing the operation of this embodiment. Fifth
The figure is a flow diagram showing the operation of another embodiment of the present invention. FIG. 6 is a flow diagram showing the operation of yet another embodiment of the present invention. FIG. 7 is a flow diagram showing the operation of another embodiment of the present invention. In the figure, 10 is a document cutting machine, 12 is a cutting unit, 14 is a paper feeding unit, 20a and 20
b is a cutter roller, 32 is a paper feed roller, 44 is a microcomputer, 48 is a motor driver, 5
0 indicates a cutter motor, and 52 indicates a paper feed motor.

Claims (1)

[Scope of Claims] 1. A paper feeding means for automatically supplying paper to be cut; a cutting means for cutting the paper supplied from the paper feeding means; a stop command means for instructing a stop; and a time difference stopping means for stopping the cutting means a predetermined time after the paper feeding means is stopped in response to a stop command from the stop command means.
Document cutting machine. 2. The time difference stopping means includes timer means for counting the predetermined time.
Document cutting machine mentioned in section. 3. The document cutting machine according to claim 1 or 2, wherein the predetermined time is selected to be at least enough time for the cutting means to finish cutting the paper being cut. 4. The paper feeding means includes a holding section that holds the paper to be cut, and the stop command means is provided in association with the holding section, and has a first section for detecting that there is no paper left there. Claim 1 includes a detection means for
The document cutting machine according to any one of Items 1 to 3. 5. A second detection means is provided on the paper conveyance path from the paper feeding means to the cutting means to detect that the paper has passed therethrough, and the stop command means is configured to detect when the paper passes through the paper conveyance path. A document cutting machine as claimed in any one of claims 1 to 3, including means for outputting a stop signal when the means detects passage of the last paper. 6. A third detection means is provided on the downstream side of the cutting means to detect that the paper has passed therethrough, and the time difference stop means stops the cutting in response to the output of the third detection means. A document cutting machine according to any one of claims 1 to 5, including means for stopping the means. 7. The paper feeding means includes a holding part that holds the paper to be cut, and the stop command means is a first part provided in association with the holding part and configured to detect when there is no paper left there. further comprising a third detecting means provided downstream of the cutting means to detect that paper has passed therethrough, and the time difference stopping means detects the output of the third detecting means. 2. A document cutting machine as claimed in claim 1, including means for stopping said cutting means in response to.