JPS5820996Y2 - tape punch mechanism - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a tape punch mechanism, and more specifically, to a tape punch mechanism for forming a perforated tape used in electronic computers and the like.

A conventional tape punch mechanism will be explained with reference to FIG.

In FIG. 1, 101 is a drive shaft such as a motor shaft, to which an eccentric cam 102 is fixed.
2, a rocking plate 103 is rotatably attached.

A part of the hammer lever 105 is connected to a part of the swing plate 103 via a rotation shaft 103A, and a lever 105 is connected to the other part of the swing plate 103 via a rotation shaft 103A.
One end of the punch lever 106 is rotatably connected via 103B.

Another part of the hammer lever 105 is connected to the middle of the punch lever 106 via a punch lever M104, and the other end 1
06A is a punch pin 8 that is slidably supported on the punch table.
engage with.

The punch lever shaft 106 is pulled by the reset spring 110 so as to rotate counterclockwise about the size of the reset shaft 103B, and the stopper shaft 107 is pulled in the direction in which it is pulled.
is provided to restrict its rotation.

The six electromagnetic claws 109, which rotate counterclockwise around the shaft 109A by the excitation of the trigger electromagnet 7, are connected to the trigger lever 108.
The trigger lever 108, which is normally pulled to the right in the figure by the trigger lever spring 111, is moved to the left by the trigger lever 105 and the punch lever 1.
06 and the end 106A of 06.

Next, the operation of this conventional tape punch mechanism will be explained.

As the drive shaft 1010 rotates, the swing plate 103 is constantly swinging as shown by the thick arrow.

Along with this, the hammer lever 105 is also constantly reciprocating as shown by the arrow, but the hammer lever 105 is not normally engaged with the punch lever 106.

Now, when it is desired to punch a hole in the paper tape T, the trigger electromagnet 7 is excited by operating a button (not shown) or the like.

At this time, as already mentioned, the trigger lever 108 moves and intervenes between the punch lever 105 and the punch lever 106. Therefore, when the punch lever 105 moves upward in the figure, the punch lever 106 moves through the trigger lever 108. engages and pushes it up.

Therefore, this punch lever 106 is connected to the punch lever shaft 104.
Instead, it rotates counterclockwise, pushing up the punch pin 8 that is in contact with the end 106A of the punch lever 106, and creating a hole in the paper tape T.

Next, when the hammer lever 105 enters the downward stroke, the punch pin 8 descends and separates from the paper tape T, and at the same time, the reset shaft 1
03B pushes up the left end of the punch lever 106 and is reset.

Immediately after this, the trigger electromagnet 7 has already been energized and is oil-moved, so that the trigger lever 108 moves to the right of the arrow and returns to the standby state.

The conventional tape punch mechanism described above has the drawback that it has a large number of component parts and its mechanism is extremely complicated.

This invention was made in order to eliminate the drawbacks of the prior art, and the object is to provide a new tape punch mechanism with a small number of component parts and a simple mechanism.

One implementation 1) of this invention will be explained with reference to FIG.

In the figure, an eccentric cam 2 is fixed to a drive shaft 1 driven by a motor or the like, and this eccentric cam 2 is rotatably mounted approximately in the middle of a plate 3.

A swinging arm 4 rotatable via a shaft 4B is attached to one end of the plate 3, the other end of the swinging arm 4 is rotatably supported by a shaft 4A, and the position of the shaft 4A is fixed by attaching the swinging arm 4 to one end of the plate 3. 3 performs in-field movement as the eccentric cam 2 rotates.

Therefore, from now on, board 3 will be referred to as the intra-field motion board.

Now, attach the shaft 3 to the end opposite to the shaft 4B of the movement plate 3 in the column.
A punch lever 5 is rotatably attached via A.

The punch lever 5 has a substantially triangular plate shape, and a punch lever engaging portion 51 corresponding to one corner apex is arranged facing the core 71 of the selector magnet 7, and the punch lever engaging portion 51 is located opposite to the punch lever engaging portion 51. A punch lever stopper 6 is disposed on the portion 52, and the punch lever 5 is normally drawn to the punch lever stopper 6 by a tension spring 11 attached to the side 52 side.

Ji, -3A(U), and 3A(D) are the top dead center position and bottom dead center position, respectively, when the shaft 3A of the column movement plate 3 moves according to the trajectory of the column motion shown by 9. It shows.

The surface of the magnet core 71 facing the punch pin engaging portion 51 is coated with a wear-resistant coating 10 made of a non-magnetic and highly wear-resistant material such as polypropylene or polyethylene. is in contact with the magnetic core 71, and the punch pin 8 is provided so as to be slidable in its axial direction so as to engage with the notch of the punch pin 8.

Next, the operation of this implementation "11" will be explained.

1 When the drive shaft 1 is rotated, the in-field movement plate 3 performs in-field movement as described above.

At this time, if the selector magnet γ is excited by an operation button (not shown) or the like, the punch pin engaging portion 51 of the punch lever 5 is attracted to the magnet core 71 and comes into contact with the wear-resistant coach ink 10.

In this state, when the in-field movement of the in-field movement plate 3 advances, the punch lever 5 moves its punch pin engaging portion 51 to the magnet core 7.
The punch pin 8 moves one inch above the contact point 1, so that the punch pin 8 is pushed up and punches a paper tape (not shown).

When the operation button is released to demagnetize the selector magnet γ, the tension spring 11 pulls the punch lever 5 toward the punch lever stopper 6, and the side 52 of the punch lever 5
moves up and down while being close to the punch lever stopper 6, and thus the punch pin engaging portion 51 of the punch lever 5 engages with the notch of the punch pin 8 and disengages, resulting in idle movement.

As is clear from the above details, this idea is based on (i
) The number of component parts is smaller than the conventional mechanism, and the configuration is extremely simple. (11) When the selector magnet is energized, the distance between the magnet core and the punch lever that is to be pulled by it is zero, so less current is required. (110 The surface of the magnet core Since it is coated with a wear-resistant coating, it operates smoothly and has many advantages, such as being able to withstand long-term operation.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing a conventional tape punch mechanism, and FIG. 2 is an explanatory diagram showing an embodiment of this invention. 3A...In-column movement axis, 5...Punch lever, 51...
・Punch pin engagement part, 6... Punch lever stopper, 7
... Selector magnet, 71 ... Magnet core, 8 ... Punch pin

Claims (1)

[Scope of utility model registration request] a punch lever 5 whose one end is rotatably attached to the field movement shaft 3A, and whose other end is arranged to face the magnet core 71 of the selector magnet 7;
a punch pin 8 slidably disposed in contact with the punch pin engagement portion; and a punch disposed so as to bring the punch pin engagement portion into contact with the magnet core when the punch lever reaches a dead center position of the in-field movement. A tape punch mechanism having a lever stopper 6.