JPS6158280B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutter device in which a pair of blades are moved toward and away from each other by the rotation of a motor to cut the material between them.

Conventional conventional devices of this kind have the risk of being cut if a foreign object, such as a worker's finger, gets caught between the blades, and if the foreign object is quite hard, there is a risk of damaging the blade. There were some drawbacks.

In order to avoid these dangers, for example, it is possible to stop the motor instantly when a foreign object is caught between the blades. This method requires an instantaneous stop device for the motor, which is expensive, and has drawbacks such as the need to restart the motor after removing foreign objects.

The object of the present invention is to eliminate the drawbacks of the above-mentioned conventional devices, and to provide a cutter device which, when a foreign object is caught between the blades, can limit the forward movement of the blades without any hindrance while the motor continues to rotate. It is.

The present invention will be described with reference to embodiments shown in the drawings.

In Figures 1 and 2, 1 is the frame substrate;
Reference numerals 2 and 2 and 3 located between them are guide shafts fixed parallel to each other below the substrate 1, 4 and 4 are sliders mounted astride the guide shafts 2 and 2 and movable along them, respectively. Sliders 6 and 7 are attached to the guide shaft 3 so as to be movable along it, and the lower ends of the sliders 6 and 7 are respectively fixed to the sliders 4 and 5. Supports 9 and 10 extend upward through the slot 8 of the substrate 1. Blades 11 are fixed to the supports 6 and 7 facing each other, 11 is an actuation plate fixed to the sliders 4 and 4 and has a bent portion 12 at one end, 13 is a motor fixed to the frame, 14
is an eccentric shaft fixed to the rotating shaft 15 of the motor 13 via a disk 16, and 17 is a pin 1 provided on the frame.
8, 18, and a vertical hole 20 that engages with the eccentric shaft 14, the reciprocating plate 21 reciprocates with the circular motion of the eccentric shaft 14; is attached to the bending part 12 and the reciprocating plate 17, and in a steady state, the bending part 12 is brought into contact with the end of the reciprocating plate 17, and when an external force of more than a predetermined value is applied, the bending part 12 A tension spring 22 is arranged between one end of the guide shaft 3 and the slider 5 to allow the blade to move away from the end of the reciprocating plate 17, and a compression spring 23, 2 is arranged to bias the blade 10 in the backward direction.
3 is a guide plate fixed to the base plate 1 on both sides of the column 7 and holds the column 7 in an upright state; 24 is an intermediate shaft 2 attached to the guide plates 23, 23 behind the column 7;
5 are pivotally mounted, and rollers 2 engage with the back surface of the support column 7 and the inclined portion 26 of the actuating plate 11 at both upper and lower ends, respectively.
A swinging lever equipped with 7 and 28, 29 is a reciprocating plate 1
This is a limit switch that confirms the completion of the reciprocating stroke of step 7.

Reference numeral 30 denotes a material to be cut by the blades 9 and 10, for example, a continuous drug packaging paper that is packaged in an automatic drug packaging machine and then intermittently transferred by an appropriate transfer means; Two pairs of rollers are arranged before and after the blades 9, 10 with respect to the conveying direction in order to keep the blades in a tensioned state.
33 and notched rollers 32, 34 are combined, and the notched rollers 32, 34 have their notched portions in phase with each other.
They are placed 90 degrees apart.

In the above-mentioned cutting device, when the continuous drug packaging paper 30 is interrupted due to intermittent transfer, the portion located between the blades 9 and 10 becomes taut due to the action of the roller pairs 31 to 34, and in this state,
As shown in FIGS. 3 to 5, as the reciprocating plate 17 moves forward due to the rotation of the motor 13, the actuating plate 11 advances integrally with the reciprocating plate 17 via the tension spring 21, thereby moving the blade 9 forward. At the same time, the inclined part 2
The swinging lever 24, which is pushed by the roller 28 at 6, swings counterclockwise to move the blade 10 forward against the compression spring 22, thereby causing the blades 9 and 10 to cut the continuous medicine packaging paper 30. . If, for example, an operator's finger or the like is caught between the blades 9 and 10 while the actuating plate 11 is moving forward, the reciprocating plate 1 will be moved by the rotation of the motor 13, as shown in FIG.
Regardless of the forward movement of blade 7, the tension spring 21 stretches and the actuating plate 11 does not advance any further, so neither the blades 9 nor 10 move forward, and there is no risk of cutting off the operator's fingers, etc. Even if there is no foreign matter or a very hard foreign object is caught, the blades 9,1
There is no risk of damage to 0. After cutting the continuous drug packaging paper 30, the blade 9 moves back due to the retreat of the actuating plate 11 as the reciprocating plate 17 moves back, and the swinging lever 24 swings clockwise due to the action of the compression spring 22, causing the blade 10 to move backward. is moved back, thereby returning to the initial position, and waiting for the next part of the continuous drug packaging paper 30 to be cut to be transferred between the blades 9 and 10. In addition, if a foreign object is caught between the blades 9 and 10, the blades 9 and 1
0 will expand and the foreign object will be easily removed.

In the above embodiment, the continuous medicine packaging paper 30 was exemplified as the material to be cut by the blades 9 and 10, but the present invention is not limited to this, and it goes without saying that various changes and modifications of the above embodiment are possible. Nor.

Since this invention is configured as described above, even if a foreign object is caught between the blades, the forward movement of the blades can be restricted without any problem while the motor continues to rotate. This prevents the risk of the blade being cut or damaged if the foreign object is quite hard, and there is no need for a detector to detect when a foreign object is caught or an instant stop device for the motor. Not only is it inexpensive, it can easily remove trapped foreign objects, and there is no need to restart the motor after removing it, so it is suitable for a wide range of applications. It has the following effects.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. 1 is a partially cutaway front view, FIG. 2 is a perspective view of the main part, and FIG. 3 is a partially cutaway front view.
Figures 1 to 6 are explanatory diagrams showing the operating state. 1: Substrate, 2, 3: Guide shaft, 4, 5: Slider, 6, 7: Support column, 8: Slot, 9, 10: Blade, 11: Operating plate, 12: Bending part, 13: Motor, 14 : Eccentric shaft, 15: Rotating shaft, 16: Disc,
17: Reciprocating plate, 18: Pin, 19: Horizontal hole, 2
0: vertical hole, 21: tension spring, 22: compression spring, 2
3: Guide plate, 24: Swing lever, 25: Intermediate shaft, 26: Inclined part, 27, 28: Roller, 29:
Limit switch, 30: Continuous medicine wrapping paper, 31-3
4: Laura vs.

Claims (1)

[Claims] 1 A pair of blades that can approach and separate by moving forward and backward in opposition to each other, an actuation plate fixed to one of the blades, a motor, and the rotation of the motor causes the actuation plate to reciprocate via a spring when moving forward. A cutter device comprising: a member; and a member that engages with the actuating plate to advance the one blade toward the other blade when the actuating plate advances.