JPS609895Y2 - Katsuta - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an automatic cutter attached to a ticket issuing machine or the like.

In the conventional cutter attached to so-called automatic ticket vending machines, as shown in Fig. 1, a lower blade 2 is rotatably supported on an upper blade 1 which is fixedly attached via a spring washer 2. The swing driving means for this lower blade is as shown in FIG.

That is, the upper end of a lever 5 that swings about a shaft 4 is rotatably connected to the lower blade 3, and a return spring 6 is stretched around the upper end.

A roller 7 is pivotally supported at the lower end of this lever 5, and is always in elastic contact with a cam 9 which is pivotally attached to a drive shaft 8 by the spring 6.

10 is a roller that wraps the paper P.

In such a conventional automatic cutter, the lower blade 3 is driven to swing in conjunction with the counterclockwise rotation of the cam 9, but the paper P is cut within the angle θ range of the longest diameter side of the cam. The lower blade swings downward and opens only when the roller 7 is in contact with the cam, and when the roller falls on the four parts of the cam.

For this reason, this conventional cutter cuts from one end of the paper, but if the paper is not strong enough, the paper may bend and the paper may be cut off from a predetermined line.

In addition, because the drive mechanism of these conventional cutters is not integrated, it is difficult to maintain positional accuracy when connecting the drive mechanism and cutter, making it impossible to apply them to other devices, and they tend to become larger. Since it is driven via a link mechanism or a lever mechanism, the force transmission efficiency and poor connections (backlash) at each joint reduce the stroke efficiency.

In addition, it is necessary to accurately reset the relative angle of the fixed and movable cutting blades, the pressing force, etc., and a mechanism that charges force with a cam or the like to drive the movable blade has poor response and becomes mechanically complex. There were drawbacks such as.

Therefore, the purpose of this invention is to make the positioning of the fixed and movable double blades easy and do not require adjustment, to make the force transmission to the movable blade efficient by directly driving the movable blade with a solenoid, and to The force is used to press the movable blade against the fixed blade and at the same time to return the movable blade.Therefore, the object of the present invention is to provide a cutter with a reduced number of parts.

The feature of this invention is that the fixed blade is fixed on the top surface of the table.
The movable blade that slides on the upper surface of the fixed blade is fixed to a movable blade support plate having a hollow part in the center, and the solenoid fixed to the table is positioned in this hollow part, and the movable blade that is moved by this fixed blade is fixed to a movable blade support plate having a hollow part in the center. The iron core is swingably connected to the movable blade support plate, and the spring, which is stretched between the movable blade support plate and the table, connects the movable blade support plate and the movable iron core to the connecting point and the movable blade. It is located on the fixed blade side with respect to the line connecting the contact point with the fixed blade, and one end is hooked to the table above on the backward side of the movable blade support plate, and the other end is hooked to the movable blade support plate on the forward side. Therefore, the spring force of this spring is in the direction of the return of the movable blade and in the direction of pressing the movable blade against the fixed blade.

This embodiment will be described below with reference to FIGS. 3 and 4.

Supports 12.12 are fixed to both sides of the base 11,
A table 13 is horizontally fixed to the upper surface of this support.

A solenoid 14 is fixed to the table 13 at a predetermined position by bolts 15, 15.

16 is a yoke of this solenoid 14, and 17 is a coil.

The movable iron core 18 is controlled by the yoke 21 of this solenoid 14.
is designed to be driven, and the mounting position of this solenoid is configured as follows.

That is, by providing a movable blade support plate 19 having a hollow portion in the center, the solenoid 14 is positioned within this hollow portion.

The movable blade support plate 19 and the movable iron core 18 are swingably connected via a bracket 20, and the movable blade support plate is therefore reciprocated in the left-right direction in FIG.

At this time, guide rollers 22 and 22 are positioned on both sides of the outer periphery of the movable blade support plate 19 to guide the sliding direction of this support plate.

Further, pins 23 and 23 are suspended from the front (left) lower surface of both sides of the movable blade support plate 19, and pins 24 and 24 are also implanted on the upper surface of one end (right end) of the table 13.

Therefore, by hooking one end of the spring 25 to the pin 23 and the other end to the pin 24, the spring 25 is stretched between the table 13 and the movable blade support plate 19. The position return action and the elastic contact action between the movable blade 32 and the fixed blade 34 are combined.

That is, in this example, the spring 25 is located on the fixed blade 34 side with respect to the line connecting the connection point between the movable blade support plate 19 and the movable iron core 18 and the contact point between the movable blade 32 and the fixed blade 34. Moreover, since the pin 24 on the table 13 side is located on the backward side of the movable blade support plate 19, and the pin 23 is located on the forward side of the movable blade support plate 19, the spring force of the spring 25 is in the return direction of the movable blade. At the same time, it extends in the direction of pressing the movable blade against the fixed blade.

Further, a mounting plate 26 is fixed to the upper surface of the yoke 16 with screws 27, 27, and a detection switch 28 is screwed to one end of this mounting plate with screws 29, 29.

A contact piece 31 fixed to the upper surface of the movable blade support plate 19 with screws 30 and 30 can be freely moved toward and away from the contact piece for opening and closing the detection switch 28.

A movable blade 32 is screwed to one end side (right end side) of the movable blade support plate 19 with screws 33, 33.

Edges 32a and 32b are provided at both ends of this movable blade 32, and when one edge cannot be cut, screw 3
3, remove this movable blade and rotate it so that the attachment can be cut with the other edge.

A fixed blade 34 that cooperates with the movable blade 32 is mounted on the table 13.

The shape of the edge at the tip of the fixed blade 34 is inclined from both ends toward the center.

The shape of the edge of the fixed blade 34 may be the same as that of the movable blade 32.

An open groove 13a is bored in this table 13, and guide pieces 35, 36 and 37 are attached to the screws 3 around the lower surface of this open groove.
It is screwed by 8.39.

Note that 40 is a guide roller for the paper P, and 41 is a cushion.

Next, the operation of the present invention will be explained.

When a pulse signal is input to the solenoid 14, the yoke 21 is attracted, thereby attracting the movable iron core 18.

Therefore, the movable blade support plate 19 is guided by the guide rollers 22, 22 and moves to the right.

Therefore, the paper P guided into the guide pieces 35, 36, and 37 is cut by the cooperation of the movable blade 32 and the fixed blade 34.

During this cutting, the movable blade 3 is moved by the spring force of the spring 25.
2 slides in elastic contact with the upper surface of the fixed blade 34, so the paper P
Cutting is performed with high precision.

In particular, if the shape of the fixed blade 34 is inclined from both ends toward the center, the position of the paper P will not shift from side to side, so that it can be cut accurately and efficiently.

The moving state of the movable blade support plate 19 is detected by the contact/separation state between the detection switch 28 and the contact piece 31.

When the cutting is finished, no current flows through the solenoid 14, and the movable blade support plate 19 is returned to its original position by the spring spring 25.

When returning, the movable blade support plate 19 hits the cushion 41 and its vibration is absorbed.

As described above, the present invention fixes the solenoid, which is an electromagnetic drive means, on the table and arranges this solenoid in the hollow part of the movable blade support plate to form a unit. Therefore, the positioning of the fixed and movable double blades is easy and adjustment is possible. Not necessary.

Furthermore, it can be installed as a unit in any device, and since the movable blade is directly driven without using a ring mechanism or levers, solenoid stroke and force transmission are efficient.

In addition, there is no need to install or adjust the position when replacing the movable blade, so the work is easy, and since it uses a solenoid, the response is good.The mechanism itself can be simplified, and not only can cutting be performed with high precision, but also the spring is attached to the movable blade. Since the spring force is applied in the return direction as well as in the direction of pressing the movable blade against the fixed blade, the cutting precision is good and the entire structure can be made simple and compact.

[Brief explanation of drawings]

1 and 2 show a conventional example, with FIG. 1 being a partially omitted front view and FIG. 2 being a side view thereof. 3 and 4 show an embodiment of the present invention, with FIG. 3 being a front view and FIG. 4 being a plan view. 13...Table, 14...Solenoid, 18...Movable iron core, 19...Movable blade support plate, 32...Movable blade, 34...
Fixed blade, 25...spring.

Claims (1)

[Scope of Claim for Utility Model Registration] A table, a fixed blade fixed to the top surface of this table, and a movable blade that always comes into elastic contact with the top surface of this fixed blade and slides on this top surface to cooperate with this fixed blade. , a movable blade support plate to which the movable blade is fixed; a solenoid located in a hollow central part of the movable blade support plate and fixed to the top surface of the table; a movable iron core that is swingably connected to the movable iron core; a connection point between the movable blade support plate and the movable iron core;
It is located on the fixed blade side with respect to the line connecting the contact points of the movable blade and the fixed blade, and one end is connected to the table on the backward side of the movable blade support plate, and the other end is connected to the movable blade support plate on the forward side. a spring that is latched to the cutter and has a spring force exerted in a direction in which the movable blade returns and in a direction that presses the movable blade against the fixed blade.