JP2550606Y2 - Electric punch - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device for punching a binding hole in paper to be used by binding to a file.
The present invention relates to an electric punch for punching binding holes in paper.

[0002]

2. Description of the Related Art Conventionally, in order to align the center of a punched hole with the center of the punch when punching a hole in the paper using a punch, a mark is formed at the center of the paper or the paper is folded. Was. Japanese Utility Model Laid-Open Publication No. 59-55697 discloses a centering machine for a punch to make the punch come to the center of the paper when the hole is punched.

[0003]

[Problems to be Solved by the Invention] The former method of the prior art described above is troublesome, and some papers cannot be marked or folded, which is inconvenient. In the latter case, too, the operation was troublesome and the position was inaccurate because humans visually read the size of the paper and adjusted the paper by hand.

[0004]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and has a sensor for detecting an end of a sheet and a punch which is moved by a signal from the sheet end sensor. The present invention proposes an electric punch having a block, a light emitting diode disposed at a substantially central portion of the punch block, and a display window through which light emission of the light emitting diode can be visually recognized from outside.

[0005]

In the electric punch according to the present invention, the punch moves at the same time as the sensor moves to detect the end of the paper. When the end is detected, the punch block is located at the center of the paper, so the punching operation is performed. The time to enter is short, and
The movement of the sensor and the punch block is performed electrically, and the movement of the punch block can be visually recognized from the outside of the cover, so that a hole can be quickly and accurately made at the center position.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the accompanying drawings. First, FIG. 1 is a perspective view showing the internal appearance of the electric punch according to the present invention. Punch block 2 on substrate 1
Are movable. A timing belt 6 is engaged with the lower surface of the end of the punch block 2, and the timing belt 6 is suspended between an output shaft (not shown) of the gear box 4 and a timing pulley 6. The gearbox 4 has a built-in reduction gear,
A motor 5 for moving the punch block 2 is provided.

A timing pulley 9 disposed coaxially with a timing pulley 8 around which the timing belt 6 is wound;
The timing belt 7 is also suspended between the timing belt 10 and the timing pulley 10. An interrupter 12 as a paper edge detection sensor is fixed to the timing belt 7. At the right end of the timing belt 7, an interrupter 11 as a paper detection sensor is disposed. In the center of the front of the punch block 2, a diode 1 emitting light of three colors is provided.
3 are arranged.

Next, FIG. 2 is a perspective view of the entire appearance covering the internal device of FIG. 1. A display window 15 through which the light emitting diode 13 can be seen from the outside is arranged above the cover 14, and a hole is formed below. A paper insertion slot 16 for inserting the paper to be opened is provided with a rotatable opening / closing lid 17 below it.

FIG. 3 is a sectional view showing the internal structure of the punch block 2. As shown in FIG. The drive shaft 18 is directly connected to a punch motor (not shown). The drive shaft 18 meshes with a gear 19, and the gear 19 further meshes with a crank 20. The crankshaft 22 in which the pin 21 of the crank 20 is engaged with the elongated hole is rotatable around the pin 23 as a fulcrum. At the other end of the crankshaft 22, a blade 25 on which a spring 24 is wound is swingably disposed.

At the lower part of the blade 6, a paper waste tray 25 has a hole 2 at the upper part.
7 are arranged. A moving wheel 28 is arranged on the lower surface of the punch block 2.

Next, the operation method and operation will be described. First, when a sheet to be perforated (not shown) is inserted from the sheet insertion slot 16, the interrupter 11 as a sheet detection sensor applies a detection signal to the control circuit 30 via the comparator 29 (step 1), and via the motor driver 31 The punch block moving motor 5 is rotated (step 3). At this time, a light emitting diode (hereinafter referred to as LED) 5
The green color changes from green on standby to red (step 2), the punch block moving motor 5 is rotated, and the end of the inserted paper is detected by the paper end detection interrupter 12 as a paper end detection sensor. This detection signal is applied to the control circuit 30 via the comparator 32.

The control circuit 30 to which the paper edge detection signal is applied
Stops the rotation of the punch block moving motor 5 (step 5). Next, the punch motor 34 is rotated via the motor driver 33 (step 6), and the drive shaft 18 is rotated.
Rotates to rotate the gear 19 and the crank 20 to swing the crankshaft 22. At this time, the LED 13 turns red (step 7), and the blade 25 is moved up and down to make a hole in the sheet.

When the punching of the paper is completed, the blade 25 is held upward, the rotation of the punch motor 34 stops, and the LE
The light emission color of D13 is changed to orange (step 8), and the drilling operation (punch) is completed. Then remove the paper and L
ED13 turns green.

A punch block right end detection sensor 36 and a punch block left end detection sensor 37 are arranged to control the moving range of the punch block 2, and the control circuit 30 controls the rotation of the punch block moving motor 34. .

In this embodiment, various sensors are described as optical interrupters. However, the present invention is not limited to this, and a contact switch such as a microswitch may be used. It is.

[0016]

[Effects of the Invention] The present invention is convenient in that a punch hole can be punched in the center of the paper simply by inserting the paper that needs to be punched, and the operation status can be confirmed by the light emitting diode color. It is.

[Brief description of the drawings]

FIG. 1 is a perspective view showing the internal appearance of an electric punch according to the present invention.

FIG. 2 is a perspective view of the entire appearance.

FIG. 3 is a longitudinal sectional view of a punch block.

FIG. 4 is an electrical block diagram

FIG. 5 is a flowchart.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Substrate 2 Punch block 3 Guide rail 4 Gear box 5 Punch block moving motor 6 Timing belt 7 Timing belt 8 Timing pulley 9 Timing pulley 10 Timing pulley 11 Paper detection interrupter 12 Paper end detection interrupter 13 Light emitting diode 14 Cover 15 Display Window 16 Paper insertion slot 17 Opening / closing lid 18 Drive shaft 19 Gear 20 Crank 21 Pin 22 Crankshaft 23 Pin 24 Spring 25 Blade 26 Paper waste receiving 27 Hole 28 Wheel 29 Comparator 30 Control circuit 31 Motor driver 32 Comparator 33 Motor driver 34 Punch motor 36 Punch block right end detection sensor 37 Punch block left end detection sensor

Claims (1)

(57) [Scope of request for utility model registration] 1. A sensor for detecting an end of a paper, a punch block which is moved by a signal from the paper end sensor,
An electric punch, comprising: a light emitting diode disposed at a substantially central portion of the punch block; and a display window through which light emission of the light emitting diode can be visually recognized from outside.