JPS5928795Y2 - cutting machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a cutting machine whose cutting blade can be easily replaced.

Conventional paper cutting machines, in which the cutting blade is attached to a machine frame set upright on a base so that it can be raised and lowered, and the paper placed on the base is cut by pushing the cutting blade down by operating a handle, all have large cutting blades. There was a problem in that it was not easy to replace the cutting blade because it was attached directly to the machine frame, and a link mechanism for raising and lowering the cutting blade, a paper holding plate, etc. were attached to the top of the cutting blade.

The present invention was completed with the aim of providing a cutting machine that solves the above-mentioned problems, and one of the inventions will be explained in detail below with reference to an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes a base plate, and a machine frame 2 is erected on the upper surface of the base plate. A shaped cutting blade holder 6 is suspended.

Furthermore, three pins 7 are provided protruding from the back of the cutting blade holder 6 as shown in FIG. We support
Since the outer surface 10 of this paper press plate 8 is in contact with the inner surface of the machine frame 2, the cutting blade holder 6 can be moved up and down along the machine frame 2.

Furthermore, a recessed step 11 having a depth corresponding to the thickness of the cutting blade is formed in the lower part of one side of the cutting blade holder 6, extending from one end to the other end of the ancient capital, and a stopper part 13 is formed on the other end side. , and a horizontal locking groove 12 is provided at the upper part of the recessed step 11 .

Reference numeral 14 denotes a cutting blade that is attached and held in the recessed step 11. The cutting blade 14 is inserted and removed through the cutting blade insertion port 18 provided on one side of the machine frame 2, and is attached to the recessed step 11. One side of the cutting blade 14 is provided with a ridge 15 that engages with the locking groove 12, and the cutting blade 14 is connected to the cutting blade holder 6.
This prevents it from falling downward.

Further, as shown in FIG. 2, a paper presser plate 8 is attached to one side of the cutting blade holder 6, and the cutting blade 14 fits perfectly within the space formed by the recessed step 11 and the paper presser plate 8. Since the cutting blade 14 is housed in the cutting blade holder 6, the cutting blade 14 is held in the cutting blade holder 6 without fear of falling off laterally.

In addition, this cutting blade 14 is in the raised position shown in FIG. 1 by the force of the spring 5 during non-several cutting, and can be inserted from one side of the cutting blade holder 6 through the cutting blade insertion port 18 without removing the front plate 3. The cutting blade can be removed,
Reference numeral 19 denotes a push-down plate that is in contact with the upper surface of the cutting blade holder 6, and the tip of a pin 20 protruding from the rear plate 4 is fitted into a diagonal hole 21 of the push-down plate 19.

Further, 22 is a cam with operating handles 2 and 3 supported by the front plate 3 and the rear plate 4, and when the operating handle 23 is rotated downward, the cam is fixed to the connecting portion 24 of the push-down plate 19. The paper pressing plate 19 is slid diagonally downward and the cutting blade holder 6 is pressed down by the lower surface of the pressing plate 19 to perform cutting.
This is a spring that biases the

With this structure, when the paper to be cut is placed on the board 1 and the operating handle 23 is rotated downward, the push-down plate 19 presses the top surface of the cutting blade holder 6, causing the cutting blade to be cut. The holder 6 gradually descends while stretching the spring 5, and the cutting blade 14 held at its lower part starts cutting the paper, and almost at the same time or around the same time, the cutting blade 14 is supported by the cutting blade holder 6. The lower surface of the paper presser plate 8 comes into contact with the paper surface, but once the paper presser plate 8 hits the paper surface, it cannot lower any further, so it stays at that position while pressing the paper surface, while the cutting blade holder 6 is pressed further. As the cutting blade holder 6 is lowered, the cutting blade holder 6 advances diagonally downward along the inclined hole 9 of the paper presser plate 8, and is attached to the recessed step 11 of the cutting blade holder 6, as shown in FIG. The cutting blade 14, which engages and holds the strip 15 in the locking groove 12, produces a so-called pulling action.

When the operating handle 23 is raised after cutting is completed, the cam 22 stops pressing the protrusion 25 and the cutting blade 14 is pulled up together with the cutting blade holder 6 by the force of the spring 5, resulting in the state shown in FIG. to return to.

If such cutting work is repeated for a long period of time and the sharpness of the cutting blade 14 becomes dull, insert the cutting blade 14 in the state shown in FIG. When the cutting blade 14 is moved to the opposite position, the head of the cutting blade 14 comes out from the cutting blade insertion opening 18 provided on one side of the machine frame 2, so it can be easily pulled out by pinching it, and a new cutting blade 14 can be cut in the same way. It can also be inserted into the recessed step 11 of the blade holder 6.

Furthermore, since these operations can be performed without removing the front plate 3, rear plate 4, etc., the cutting blade 14 can be replaced extremely easily, and its sharpness can always be maintained.

As is clear from the description of the above embodiments, the present invention has a recessed step with a locking groove formed on the lower part of one side of the cutting blade holder that moves up and down along the machine frame. Since the cutting blade is inserted and held through the cutting blade insertion slot, the cutting blade is always held integrally with the cutting blade holder, allowing for accurate cutting without fear of falling off, and the sharpness of the cutting blade is maintained. When it deteriorates, the cutting blade can be replaced very easily through this cutting blade insertion port without removing the front plate etc.
Furthermore, since the cutting blade itself is thin and inexpensive, it is economically advantageous and has great practical value as it solves the problems of conventional cutting machines.

[Brief explanation of the drawing]

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 of the main part showing a different aspect. 1: Base plate, 2: Machine frame, 6: Cutting blade holder, 11: Recessed step, 12: Locking groove, 14 Two cutting blades, 15: Ridge, 18
: Cutting blade insertion port.

Claims (1)

[Scope of utility model registration request] Concave stepped portion 1 with grooves 12 for locking the lower portion of one side of the plate-shaped cutting blade holder 6 that moves up and down along the machine frame 2 installed upright on the base plate 1
1 and a cutting blade insertion port 18 on one side of the machine frame 2.
A cutting blade 1 having a ridge 15 on one side to be engaged with the locking groove 12 is attached and held in the recessed step 11 so that it can be inserted and removed through the cutting blade insertion port 18. A cutting machine characterized by: