JPS5928794Y2 - cutting machine - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a push-cut type cutting machine.

A push-cut type cutting machine is widely used, in which a cutting blade is attached to the top surface of the base plate so that it can be moved up and down, and the paper set on the base plate is cut by pushing the cutting blade down by operating an operating handle. There is, but.

Conventional cutting machines of this type often have complicated lifting and lowering mechanisms for the cutting blades, making them expensive/difficult due to the large number of products to be manufactured, and also because a large lifting mechanism is provided above the cutting blades. However, there were various drawbacks such as the tube being difficult to match accurately with the straight F of the paper iM blade.

The present invention was completed with the aim of providing a cutting machine free from the above-mentioned drawbacks, and one of the inventions will be explained in detail below using an actual case shown in the drawings.

In the figure, reference numeral 1 denotes a machine frame erected on a base plate 2, on which a cutting blade 4 is suspended horizontally by a pair of left and right springs 3, 3 from the upper part of the frame.

Three pins 5 are installed on one side of the cutting blade 4, and as shown in FIG. The paper pressing plate 6 is fitted into the oblique oblong hole 7 to support the paper press plate 6 so as to be slidable in an oblique direction with respect to the cutting blade 4.

Also, the paper pressing plate 6 is always at the lowest position O with respect to the cutting blade 4 as shown in FIG. They are constructed to have approximately the same height.

Further, above the cutting blade 4, a pair of pins 8, 8 are protruded from the machine frame 1, and these pins 8, 8 are connected to a push-down plate 9, which is provided above the side of the cutting blade 4. 9, and the left and right push-down holes 9, 9 are connected to the connecting rod 1.
1 and supported by the machine frame 1 so as to be able to move only obliquely.These push-down plates 9.9 are located above both ends of the cutting blade 4, and the cutting blade 4 is constantly held by a pair of springs 3, 3. Since they are pulled upward, the lower edges of the push-down plates 9, 9 are in contact with the upper edge of the cutting blade 4.

In addition, a cam 15 force ball with an operating handle 14 that rotates around a shaft 13 is attached to the machine frame 1, and one side of this cam 15 is provided to protrude from the connecting rod 11 of the push-down plates 9, 9. The push-down plates 9, 9 are brought into contact with the protrusions 12 so that a pushing force in the lateral direction can be applied by operating the handle.

With this structure, when the operating handle 14 is lifted upward and the cam 15 is rotated counterclockwise as shown in FIG. 1, the cutting blade 4 is pushed by the force of the springs 3, 3. The push-down plates 9, 9 are provided with inclined elongated holes 10.
, 10 to the upper right, and the cutting blade 4 rises until the protrusion 12 comes into contact with the cam 15.

In the state shown in Fig. 1, the paper to be cut is set on the base plate 2.As shown in the figure, the elevating mechanism of the cutting blade 4 is very thin, so the cutting position is precisely placed directly below the cutting blade 4. can be set to .

Next, when the operating handle 14 is gradually lowered, the cam 15 rotates clockwise and presses the projection 12 to the left.
The push-down plates 9, 9 are guided by the oblique elongated holes 10, 10 and move to the lower left, and their lower surfaces push down the upper surfaces of both ends of the cutting blade 4.

When the first paper presser plate 6 and the cutting blade 4 come into contact with the upper surface of the paper sheet almost simultaneously, the first paper presser plate 6 cannot descend any further and remains in that position while holding the paper sheet, but the operation handle If you lower 14 further, the cutting blade 4 will move to the push-down plate 9.
, 9 further pushes it down and cuts into the paper.

At this time, the side surface of the paper presser plate 6 engages with the inner side surface 17 of the machine frame 1 and cannot move laterally, so the cutting blade 4 is guided into the oblique long hole 7 formed in the paper presser plate 6. The machine moves diagonally downward and performs both push and pull cuts, making it possible to reliably cut a large amount of paper.

In addition. As described above, since the cutting blade 4 is supported by the pair of springs 3.degree., the cutting blade 4 can freely move not only downward but also obliquely downward.

As shown in FIG. 3, when the cutting blade 4 is lowered to the lowest position and cutting is completed, the operation handle 14 is raised again. When the pin 5 of the cutting blade 4 rises along the inclined elongated hole I, the paper pressing plate 6 also rises together with the cutting blade 4, returning to the state shown in FIG.

In addition. In this embodiment, a pin 5 is provided on the cutting blade 4, an oblique long hole 7 is provided on the paper presser plate 6, an oblique elongated hole 10.10 is provided on the presser plate 9, and a pin 8 is provided on the machine frame 1. However, the pin and the oblique elongated hole may be provided in the opposite way to those in the above embodiment.

As is clear from the description of the above embodiments, the present invention has a cutting blade suspended on the machine frame by a pair of springs, and a push-down plate above the cutting blade and an operating handle for driving the push-down plate. A cam is installed so that the cutting blade is pushed down by the lower surface of the push-down plate.The lifting mechanism for the cutting blade can be made extremely thin, making it easier to precisely align the cutting position of the paper directly below the cutting blade. .

Moreover, since the cutting blade is suspended from the machine frame by a pair of springs, the supporting structure of the cutting blade is simplified.
The total number of parts can be reduced to reduce manufacturing costs. Furthermore, the strong pressing force provided by the cam with the operating handle is converted into the pressing force of the cutting blade by the pressing plate that moves diagonally, making it extremely powerful. In addition to being able to perform deep push-cuts, a paper presser plate is attached to the cutting blade so that it can slide freely in the diagonal direction, so after one paper presser plate contacts the paper surface, the cutting blade advances diagonally downward and performs a pulling action. It is possible to accurately cut dozens of sheets of paper at once, and furthermore,
Since the push-down plates are brought into contact with the upper edges of both sides of the cutting blade, the effect of the push-down blade acting evenly on the entire cutting blade can be obtained, and it has great practical value as it eliminates the drawbacks of conventional cutting machines of this type. It is something.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view showing an embodiment of the present invention. FIG. 2 is a partially cutaway perspective view of the main part, and FIG. 3 is a partially cutaway perspective view showing a different aspect. 1: Machine frame, 3 Ni spring, 4: Cutting blade, 6: Paper press plate, 7: Slanted long hole, 8: Pin, 9: Press down plate, io: #!
Oblique slot, 11: connecting rod, 12: protrusion. 14: Operation handle, 15: Cam.

Claims (1)

[Scope of utility model registration request] A cutting blade 4 is suspended on a machine frame 1 by a spring 3, and a paper presser plate 6 is placed on one side of the cutting blade 4 under the guidance of a pin 5 and an inclined elongated hole 7 provided on the cutting blade 4 and the paper presser plate 6. The machine frame 1 and the push-down plates 9 are attached to the machine frame 1 and the push-down plates 9, which are slidably attached to the machine frame 1 and connected with connecting rods 11 above both sides of the cutting blade 4.
The connecting rod 11 is provided under the guidance of a pin 8 and an oblong oblong hole 10 so that its lower edge is always in contact with the upper edge of the cutting blade 4. A cutting machine characterized in that a protrusion 12 is provided which applies a pressing force in the lateral direction to the push-down plates 9, 9 by being brought into contact with a cam 15.