JPS5820379Y2 - Japanese ink - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an improvement of an automatic stamping machine.

Conventionally, there has been a demand for an automatic stamping machine that can change the stamping position over a wide range from the leading end to the trailing end when, for example, a long stamped object is to be stamped.

In consideration of these points, the present inventor has provided a printing roller in the transfer path of the object to be stamped of an automatic stamping machine, and a detection lever that is rotated when the object to be stamped is in contact with the object to be stamped in front of the printing roller.
When the lever is rotated, the first clutch is actuated, which rotates the delay operation cam, and after a certain period of time has elapsed, the second clutch is actuated to transmit rotation to the printing roller, and the printing roller is rotated. We have developed a device that changes the delay time by rotating the cam and changing the angle of the delay action cam.

If a dog clutch, which is generally used for low-torque applications, is used in such equipment, noise will be generated when the clutch engages for each detection and stamping, giving the operator a suspicious feeling and causing problems in general offices, etc. It was unsuitable for use.

Therefore, the present invention provides an automatic stamping machine that does not generate such noise, and the gist of the invention is to provide a stamping object passage detection means and a printing roller in the stamping object transfer path of the automatic stamping machine main body. are sequentially arranged, the first clutch is operated by the detection means, and after a certain period of time has elapsed by the operation, the operation instruction means of the second clutch which transmits rotation to the printing roller is operated, and the object to be imprinted by the detection means is operated. In an automatic stamping machine configured to rotate the printing roller after a certain period of time has passed after the detection of It is equipped with a freely movable driven roller and an auxiliary roller, and the outer periphery of the driven roller and the auxiliary roller is provided with an escape groove that does not touch the main driving roller and an arc-shaped stopper piece locking groove that extends in the circumferential direction of both rollers at the same intervals. In addition, the auxiliary roller is combined with the driven roller so that it can rotate at a certain angle in a direction in which the positions of the respective relief grooves and the stopper piece locking grooves are shifted from each other, and the side relief is provided on the outer periphery of the driven roller and the auxiliary roller. At a position where the groove faces the driving roller side, clamp-shaped stopper pieces that can be freely engaged with both ends of the entrainment groove are biased in the clamping direction and come into contact with each other, and are brought into contact with the driven roller and the auxiliary roller. The automatic stamping machine is characterized in that a cam for pushing up the stopper piece is rotatably interposed between the rollers, and the cam is linked to the pressed page passage detection means.

Next, an example of implementation of the present invention will be described with reference to the drawings.

In the figure, 1 is the main body of the automatic stamping machine.

The automatic stamping machine main body 1 is equipped with a table 2 that constitutes a transfer path for the stamped object (not shown), and feeding rollers 3 and 4 are provided on the table 2 with their upper surfaces exposed. , ring-shaped rollers 5, 5 for pressing the object to be pressed are rotatably provided in contact with the feed roller located in the front.

These ring-shaped rollers 5, 5 are loosely fitted to a lever shaft 6 constituting the pressed page object detection means, and the imprinted object is located between the ring-shaped rollers 5.5 and has its tip hanging downward. A detection lever 7 is attached.

A first clutch 8 is attached to the lever shaft 6 in the printing machine body 1, and the first clutch 8 is rotated when the detection lever 7 passes an object to be stamped.
As a result, the rotation of the continuously rotated main drive roller 9 arranged parallel to the lever shaft 6 within the main body 1 is transmitted to the lever shaft 6.

A cam 1 for delay operation is attached to one end of this lever shaft 6.
0 is fixed.

This cam 10 has a large number of tapped holes 11, 11... on its outer surface.
... is formed, and its screw holes 11.11...
A protrusion screw 12 is removably fitted into one of the .

A clutch operating piece 15 for operating a clutch 14 fixed to the printing roller shaft 19 is in contact with the outer periphery of the cam 10, and the clutch operating piece 15 is connected to the screw 1 of the cam 10.
2, the stopper piece 18 of the clutch 14 around the print roller shaft is rotated via the clutch operation shaft 16, and rotation is thereby transmitted to the print roller shaft 19, causing the print roller 13 to rotate. I'm trying to make it happen.

The first clutch 8 includes a driven roller 21 which is rotated in contact with a driving roller 9 and is fixed to the lever shaft 6. The driving roller 21 rotates in contact with a driving roller 9 and is fixed to the lever shaft 6. A rotatable auxiliary roller 22 is fitted in contact with the auxiliary roller 22 .

Both rollers 21 and 22 have escape grooves 23a on their outer peripheral surfaces that do not contact the main drive roller 9.

23b and both rollers 21 and 22, arc-shaped stopper piece locking grooves 24a and 24b facing in the circumferential direction are formed in the same arrangement, and an auxiliary roller locking pin is provided on the end surface of the driven roller 21. 40 is provided protrudingly, and the auxiliary roller 22 is formed with an arc-shaped hole 41 into which the pin 40 is fitted and is slidable by a certain length. Grooves 23a, 23b, and stopper piece locking groove 2
4a and 24b are configured to be rotated by a certain length so as to be slightly shifted from each other in the circumferential direction.

A stopper piece push-up cam 26 for pushing up a stopper piece 25, which will be described later, is interposed between the driven roller 21 and the auxiliary roller 22.

The cam 26 is rotatably fitted to the lever shaft 6, and has a pin fitting groove 27 formed on its inner peripheral surface, into which the cam protruding from the lever shaft 6 is engaged. The matching pin 28 is fitted, and the cam engagement pin 28 is connected to the lever shaft 6.
The cam 26 is operated by being rotated in the circumferential direction.

This cam engagement pin 28 is implanted at one end of a cam operating shaft 29 that is inserted concentrically inside the lever shaft 6, and projects through the elongated hole 30 of the lever shaft 6. .

The aforementioned cam engagement pin 28 is attached to the other end of the cam operating shaft 29.
Similarly, a lever engaging pin 32 that penetrates the long hole 31 of the lever shaft 6 and projects outside the outer circumferential surface thereof is implanted, and the above-mentioned imprint object detection lever is attached to this lever engaging pin 32. 7 is engaged, the object to be stamped comes into contact with the detection lever 7, the detection lever 7 is rotated, the cam operating shaft 29 is rotated, and the cam 26 is operated.

A long groove 7a is formed on the inner circumferential surface of the detection lever 7, and the lever engaging pin 32 is engaged with the long groove 7a, and the tip of the detection lever 7 is moved toward the transfer direction of the imprint object by a spring 33. It is energized so that it can be rotated by a certain angle without operating the lever engagement pin 32 in the opposite direction.

The stopper single push-up cam 26 that is opened in this manner has an auxiliary roller locking pin 40 that protrudes from the driven roller 21 passed through it, and is built into the driven roller 21 so as to be rotatable at a certain angle. Further, a spring 34 is interposed between the auxiliary roller 22 and the stopper single push-up cam 26, and the spring 34 causes both rollers 2 to move in opposite circumferential directions.
Both relief grooves 23 a , 23 b and both stop bar locking grooves 24 a , 24 b of 1.22 are biased in directions shifted from each other in the circumferential direction.

Note that in FIG. 4, reference numerals 41a and 41b are end fitting holes for the spring 34, and 42 is a hole for inserting the pin 40.

This driven roller 21. A stopper piece 25 is rotatably attached to a fixed shaft 35 on the outer periphery of the auxiliary roller 22.
are in contact with each other, and this stopper piece 25 is biased in the pinching direction by a spring 36.
It consists of 25 b.

The respective tips of the two wedge-shaped pieces 25 a and 25 b are simultaneously locked at both ends of the stopper piece locking grooves 24 a and 24 b formed on the outer periphery of the two rollers 21 and 22, respectively. Locked Shigure roller 2
The escape grooves 23a and 23b of 1.22 are both located at positions facing the main drive roller 9, and when the stopper one push-up cam 26 is rotated by the rotation of the detection lever 7, one of the relief grooves 23a and 23b It is configured to push up the wedge-shaped piece 25a.

In the automatic stamping machine configured in this manner, when the object to be stamped comes into contact with the detection lever 7 and the detection lever 7 is rotated, the stopper push-up cam 26 of the first clutch 8 is rotated. , this cam 26 causes the stopper piece 2 to
Push up one of the clamping pieces 25a of the roller 21.
, 24b is released.

When this lock is released, the auxiliary roller 22 is rotated by a certain angle by the elasticity of the spring 34, and the escape groove 23b moves, and the outer circumference of the auxiliary roller 22 comes into contact with the main drive roller 9, and rotation is transmitted. As a result, the driven roller 21 is started, and its relief groove 23a is removed from the main driving roller 9, and the driven roller 21 is also removed from the main driving roller 9.
At the same time, the lever shaft 6 is rotated, and the delay action cam 10 at the other end is rotated.
After the screw 12 protruding from the outer periphery of the cam 10 rotates by a predetermined angle, it pushes the clutch operating piece 15 and rotates the stopper piece 18 for the clutch 14 of the printing roller shaft 19 via the clutch operating shaft 16.

As a result, the clutch 14 operates and the printing roller 13
is rotated, and after detection, the print 13 on the outer periphery of the print roller 20 is
The stamp is stamped on the object to be stamped which has been transferred for the time until a is pressed against the feed roller 4 side, and then
When the clutch 14 is rotated once, the stopper piece 18 stops the clutch 14 at its original position.

Also, the driven roller 21 of the first clutch 8. The auxiliary roller 22 is rotated once, and the tip of the wedge-shaped piece 25 a first comes into contact with one end of the stopper piece locking groove 24 b of the auxiliary roller 22 and is stopped, and then the driven roller 21 resists the spring 34 . When the stopper piece locking groove 24a is rotated by the length that the stopper piece is deviated from, and the stopper piece 25a is locked at one end of the stopper piece locking groove 24a, and the locking grooves 24a and 24b are aligned, the ringlet piece 2
5b is fitted into the other ends of the entrainment stop grooves 24a and 24b, and both rollers 21 and 22 are stopped in their original state.

The automatic stamping machine of the present invention is constructed as described above, and the first clutch operated by the rotation of the pressed page detection lever is connected to the auxiliary roller, the driven roller and the main driving roller, and the stopper piece and the stopper piece pushing up cam. By rotating the cam and pushing up the stopper piece, the auxiliary roller and driven roller sequentially come in contact with the main roller and rotate once, so it works like a conventional dog clutch that transmits rotation with a small torque. It also makes less noise when used inside an office, etc., and is less likely to cause trouble to others.

[Brief explanation of drawings]

The drawings show an example of the implementation of the present invention, in which Fig. 1 is a partially cutaway cross-sectional view, Fig. 2 is a sectional view showing the imprint object transfer path, and Fig. 3 is a side view of the first clutch. FIG. 4 is an exploded perspective view, FIG. 5A is an explanatory view showing the state at the time of starting the first clutch, and FIG. 5A is an explanatory view showing the state immediately before the first clutch is stopped. 1... Main body of the sliding stamping machine, 3, 4... Feed roller 6... Lever shaft, 7... Pressed object detection lever 8... ...first clutch, 9.
..... Drive roller, 10 .... Cam for delay operation, 12 ..... Screw, 19 .... Shaft for printing roller, 14 .... Clutch. 15...
...Clutch operating piece, 16...Clutch operating shaft, 18...Stopper piece, 13...Print roller, 21...Followed roller, 22...
...Auxiliary rollers, 23a, 23b...
-... Relief groove, 24 a, 24 b... Stopper locking groove, 25... Stopper piece, 26...
...Pushing cam, 29...Axle for cam operation.

Claims (1)

[Scope of utility model registration request] A means for detecting passage of a stamped object and a printing roller are sequentially arranged in the transfer path of the object to be stamped in the main body of the automatic stamping machine, a first clutch is operated by the detection means, and the above-mentioned printing roller is activated after a certain period of time by the operation. In the automatic stamping machine, the operation instruction means of the second clutch that transmits rotation to the second clutch is operated, and the printing roller is rotated after a certain period of time has passed after the detection means detects the stamped object. The clutch includes a main roller that is constantly rotated by a drive source such as a motor, and a driven roller and an auxiliary roller that are rotatable in contact with the main roller, and the outer peripheries of the driven roller and the auxiliary roller do not contact the main roller. The auxiliary roller is provided with an escape groove and an arc-shaped stopper piece locking groove facing the circumferential direction of the arc-shaped stopper facing the circumferential direction of both rollers at the same intervals, and the auxiliary roller has a respective relief groove with respect to the driven roller. The groove and the stopper piece locking groove are combined so as to be rotatable by a certain angle in a direction in which the positions of the groove and the stopper piece locking groove are shifted from each other, and the relief groove and the stopper piece locking groove are biased between the auxiliary roller and the driven roller in a direction in which the positions of the stopper piece locking groove are shifted from each other. A spring is interposed between the driven roller and the auxiliary roller, and a wedge-shaped stopper piece is provided on the outer periphery of the driven roller and the auxiliary roller so as to be able to engage with both ends of the entrainment groove at a position where the surface relief groove faces the driving roller side. A cam for pushing up one part of the stopper is rotatably interposed between the driven roller, the auxiliary roller, and the auxiliary roller, and the cam is used as the imprint object passage detection means. An automatic stamping machine characterized by being interlocked.