JPS6218394Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a cutting device for cutting inclined surfaces of cardboard, and in particular, a cutting device for cutting inclined surfaces of cardboard, which is convenient for cutting holes in cardboard such as decorative picture frames used for photographs, paintings, etc. Regarding.

Generally, for photographs, paintings, etc., after pasting them onto a mount, a decorative frame made of cardboard with cut-out holes provided at the edges is pasted.

In such decorative picture frames, the cutout portions are usually formed obliquely for the purpose of improving appearance. For this reason, such cut-out holes cannot be formed by simply punching out cardboard using a press, and in the past, workers have to manually cut each sheet one by one using a cutter. . However, this manual process of cutting each sheet one by one has extremely poor workability, making mass production impossible, and has disadvantages such as high costs and uneven cutting, resulting in irregular products. Ta. In addition, in order to eliminate such drawbacks, when a mechanical cutting device is used to form a cutout hole,
For example, when a rectangular cutout hole is formed by inserting a cutter into cardboard and moving the cutter along the cutout point, each intersection of the adjacent inclined cut ends is rounded and neatly formed without sharp edges. Moreover, when the cutter was moved from different directions to each cutout location, the work efficiency decreased, which was not completely satisfactory.

Therefore, in view of the conventional situation, the present inventors cut cardboard with a cutter according to a predetermined shape, such as a cutout hole, so that the end face of the cut forms an inclined surface with a predetermined angle. We propose a cutting device for cutting inclined surfaces of cardboard that can effectively cut the intersection of the surfaces, and a cardboard fixing device that uses vacuum force to place and fix the cardboard on the cutting table. It has a simple structure, facilitates the work of setting cardboard, and improves work efficiency.

An embodiment of the present invention will be described below with reference to the accompanying drawings. FIGS. 1A and 1B are views showing the appearance of a cutting device for cutting inclined surfaces of cardboard (hereinafter referred to as a slant cutter) according to the present invention. This cutting device slides a cutting table on which cardboard is placed, a cutter, and a cutter holder that holds the cutter toward and away from each other in a direction parallel to the cut to be made in the cardboard at an angle of inclination to the table surface. and a moving device that relatively moves the cutter and the cutting table, and forms an inclined surface on the cut edge of the cardboard by raising and lowering the cutter and moving the cutting table and the cutter relative to each other. be.

That is, in these figures, a horizontally long main frame 2 is supported on a bed 1 supported by legs, and a main frame 2 is slidably operated in orthogonal X and Y directions by a drive device built into the main frame 2. A cutting table 3 is provided.

On the other hand, a cutter holder 7 for holding a cutter 6 is provided in the cutting head 5 at the bottom of the cutting unit 4 horizontally supported on the rear end of the main frame 2, and the cutter holder 7 is tilted to the table surface by a cutter lifting device 12 to be described later. The cutter 6 is slid toward and away from the cut in a direction parallel to the cut to be made in the cardboard at an angle, and is also rotated by a cutter rotating device (not shown) to change the direction of the cutting edge of the cutter 6.

The structure of the cutter lifting device 12 will be explained based on FIGS. 2 and 3. A slider 13 is attached to the cutter holder 7. As shown in FIG. This slider 13
is slidably supported by the main body of the cutting head 5.

Further, this sliding is smoothly performed by a guide roller 13a provided on the slider 13. Slider 13
A substantially cross-shaped slider groove 13A is formed in the slider groove 13A, which is composed of a groove 13b extending along the sliding direction and grooves 13c formed by recessing a portion of both inner surfaces of the groove 13b. One end of the operating lever 14, which is rotatably supported inside the cutting head 5 body, is swingably inserted into the groove 13b, and the operating lever 1 is inserted into the groove 13c.
A pin 15 fixed and protruding from both ends of 4 is movably inserted.

The other end of the operating lever 14 is connected to the cutting head 5.
An actuating rod 16 is installed on the main body so that it can slide up and down.
is rotatably connected to via a link 17. As shown in FIG. 2, the upper end of the actuating rod 16 projects from the main body of the cutting head 5, and an annular member 19 having a circumferential groove 18 is fixedly attached to this projecting portion. On the other hand, a pair of swing levers 21 spaced apart from each other are pivotally supported on the outer periphery of a rod 20 which is rotatably supported within the main body of the cutting unit 4. The swinging lever 21 has an engaging pin 2 facing inside one end.
2, and the engaging pin 22 is connected to the actuating rod 16.
It protrudes into the circumferential groove 18 of the annular member 19 at the upper end, and the swing of the swing lever 21 about the rod 20 is transmitted to the actuating rod 16 via the engagement pin 22.
It is designed to move up and down. Furthermore, the swing levers 21 are connected to an output rod 25 of an actuating cylinder 24 provided within the main body of the cutting unit 4 via a link 23 fixed to the other end of each swing lever 21.

Therefore, when the actuating cylinder 24 is actuated to actuate the output rod 25 in the direction of the arrow in FIG. 2, the swinging lever 21 swings in the direction of the arrow via the link 23, and the actuating rod 16 is moved upward. Actuation rod 16
When the operating lever 14 swings clockwise in the figure via the link 17 in FIG. 3 due to the upward movement, the end of the operating lever 14 moves within the groove 13b of the slide groove 13A of the slider 13 in the direction of arrow A in the figure. The pin 15 comes into contact with the inner end surface of the groove 13c of the slide groove 13A and slides the slider 13 downward, allowing the cutter holder 7 to approach the table surface and reversing the operation of the operating cylinder 24. Then, the operation opposite to the above is performed, and the cutter holder 7 can be separated from the table surface.

The table driving device that drives the cutting table 3 orthogonally toward the cutting edge of the cutter 6 constitutes the above-mentioned moving device according to the present invention.

In such a configuration, the cutting table 3
The structure is such that the cardboard to be cut out is sucked by the vacuum force and fixedly supported on the upper surface thereof. That is, the cutting table 3 is formed into a hollow structure as shown in FIG. 2, and the hollow portion is configured as a vacuum chamber 3A.
A large number of suction holes 3a are provided in the upper wall of the cutting table 3 and communicate with the vacuum chamber 3A. This suction hole 3a is connected to the table 3 in advance.
Either set the opening range so that it roughly corresponds to the area of the 8 cardboard sheets to be placed on the top surface, or
It may be opened over the entire upper wall, and depending on the cardboard 8 placed thereon, the portion of the reverse drawing hole 3a protruding from the cardboard may be closed with means such as tape. An undersheet 9 made of rubber or the like is pasted to the upper wall of the cutting table 3 to absorb the excess cut of the cutter when cutting cardboard, which will be described later. A communication hole 9a corresponding to the opened suction hole 3a is opened. A frame 10 for positioning the cardboard 8 is provided on the undersheet 9. This positioning frame 1
0 is constructed by pasting, for example, cardboard onto the upper surface of the undersheet 9 using double-sided tape or the like.
In this case, the positioning frame 10 may be one that partially supports the corners of the cardboard 8, but if the cardboard is hard and warped, or if the cardboard is not fixed due to the thrust load during cutting, which will be described later. If it is stable, a ring-shaped frame that supports the cardboard 8 over its entire circumference may be used.

A vacuum pump (not shown) is connected to the cutting table 3 so as to communicate with the interior of the vacuum chamber 3A via a pipe 11 in which a control solenoid valve (not shown) is interposed.

Therefore, by operating the vacuum pump and opening the pipe 11 with the solenoid valve, the vacuum chamber 3A is opened.
Vacuum force acts inside the table 3 to suck the cardboard 8 placed on the top surface of the table 3, and to fix and support it on the top surface of the table 3.

Next, using the slant cutter with the above configuration,
A method for providing rectangular cut holes in the cardboard 8 will be explained.

At the cutting table position shown in FIG. 1A, cardboard is placed on the top surface of the cutting table 3 according to the positioning frame 10. and,
As mentioned above, the inside of the vacuum chamber 3A of the table 3 is brought into a vacuum state using a vacuum pump (not shown), and suction force is generated in the cardboard with the suction holes 3a, so that it is fixedly supported on the upper surface of the table 3. .

Next, when the operating switch (not shown) is turned on, the cutter lifting device 12 shown in FIGS. 2 and 3
is activated, and as described above, the operating cylinder 24 moves the swinging lever 21, the operating rod 16, and the link 17.
The operating lever 14 swings clockwise in FIG. 3 via the lever 14, and slides the slider 13 in the direction of arrow A in the figure. Therefore, the cutter holder 7 descends, and the cutter 6
is inserted at an inclined angle into the cardboard 8 placed and fixed on the cutting table 3 with its cutting edge facing in the Y direction. At the same time, a table drive device (not shown) is activated, and the cutting table 3 is moved a predetermined distance in the Y direction as described above. Therefore, the cardboard 8 on the cutting table 3 moves in the Y direction, and one side is cut by the cutter 6.

After this, the slider 13 is moved by the cutter lifting device 12 in the direction of arrow B in FIG. 3, the cutter holder 7 is raised, and the cutter 6 is pulled out from the cardboard 8. Here, the cutter rotating device is activated to rotate the cutting head 5 by 90 degrees from the current position, changing the direction of the cutting edge of the cutter 6 in the X direction, and the cutter lifting device 12 is activated to rotate the cutting head 5 by 90 degrees from the current position. sticks into cardboard 8. Next, the table driving device is activated, the cutting table 3 is moved a predetermined distance in the X direction, and one side of the cutout hole in the cardboard 8 in the X direction is cut. Then, the table driving device, the cutter lifting device 12, and the cutter rotating device are operated, and the cutting table 3 moves in the Y direction and the X direction to cut the other sides of the cardboard in the ends. After this, the pipe between the vacuum pump and the vacuum chamber 3A of the cutting table 3 is shut off by a solenoid valve, and the cardboard 8 is released from being fixed by the suction force and removed.

As described above, in this embodiment, the cutter 6 is raised and lowered by the cutter lifting device 12, the cutter 6 is rotated by the cutter rotation device, and the cutting table 3 and the cutter 6 are moved by the moving device including the table drive device. Due to the relative movement, a rectangular cutout hole is formed in the cardboard 8, with the cut end surface being an inclined surface at a predetermined angle.

In the above embodiment, the cutting edge direction of the cutter 6 is changed by rotation of the cutter 6 by the cutter rotation device, but in the present invention, the cutter rotation device is not necessarily required. isn't it.

According to this configuration, when cutting the cardboard 8 so that the cut end surface forms an inclined surface at a predetermined angle,
Compared to manual cutting work using the conventional cutter 6, work efficiency can be greatly improved, mass production becomes possible, and production costs can be reduced. In particular, when forming a rectangular cutout hole, it is highly effective in improving work efficiency, and the cutter 6 can be pulled out and inserted into the cardboard 8 by the cutter lifting device 12, so the cutout hole can be formed. In this case, the intersecting portions of the adjacent inclined cut end surfaces of the cut holes can be sharply formed, so that the cut holes can be processed neatly.

Incidentally, as mentioned in the explanation of the prior art, in the case where a rectangular cutout hole is formed by moving the cutter 6 along the cutout point while sticking the cutter 6 into the cardboard 8, each of the adjacent inclined cut end faces The intersection becomes rounded and cannot be formed neatly without being sharp.

In this embodiment, an example in which a rectangular cutout hole is formed has been described, but the above-mentioned slant cutter is not limited to this, and can also simply cut cardboard 8 or cut out a predetermined shape. The cut end face can be cut to form an inclined surface at a predetermined angle.

In this embodiment, the table driving device constitutes the moving device; however, this moving device may be any device as long as it moves the cutting table 3 and the cutter 6 relative to each other. The present invention is not limited to this, and a configuration may be adopted in which the cutting table 3 is fixed and only the cutters 6 are moved.

Also, according to the slant cutter with the above configuration,
Since the cardboard is fixed and supported by the vacuum force, and the upper surface of the cutting table 3 is directly used as a support for placing and fixing the cardboard, for example, a separate piece of cardboard that is fixed by holding the cardboard between the frames can be used. There is no need to provide a fixed support device, etc., and as a result, there is no restriction on the configuration and operation of the cutter section located above the cutting table 3, and the frame body cannot be manually operated unlike the above-mentioned fixed support device. It eliminates the need for troublesome work such as manual operation, simplifies the work process, and is also advantageous when adding automatic cardboard supply and automatic paper ejection devices to the slant cutter of the present invention to enable unmanned operation. It is.

By the way, if the cardboard fixing support device is composed of an underplate installed on the cutting table and a pressure frame installed on top of this to hold down the cardboard from above, the structure is extremely complicated, and Since the presser frame had to be manually operated, the workability when attaching and removing cardboard was poor. Further, since it is constructed separately on the cutting table, there are drawbacks such as the positioning of the cutter directly above the cutting table being restricted.

As explained above, according to the present invention, it is possible to easily and efficiently form a cut end face with a cutter to form an inclined surface at a predetermined angle according to a predetermined shape such as a cutout hole in cardboard, which is different from conventional cardboard. Compared to the manual cutting of each sheet using a cutter, this greatly improves work efficiency, makes mass production possible, and ultimately leads to lower production costs. Furthermore, if the device of the present invention is used, the work will be more uniform compared to manual work using a conventional cutter, the size of the cutout hole and the angle of inclination of the cut end surface will be uniform, and in particular, the work will be made more uniform by the cutter lifting device and the lowering and lowering of the cutter. Since the cutting table and the cutter are moved relative to each other by the moving device, an inclined surface is formed at the cut edge of the cardboard. It is now possible to cleanly process the intersections of the end faces by making them sharp, and it is also possible to cut the intersections of the inclined cut end faces adjacent to the cutout holes well, making it possible to improve quality. This method is particularly effective for making frames for photographs, paintings, etc. that require excellent aesthetic appearance. Furthermore, since the present invention utilizes vacuum force to securely support the cardboard, it has the advantage of simplifying the structure and making the work of setting the cardboard extremely easy, which in turn leads to improved product quality. .

[Brief explanation of the drawing]

1 is a diagram illustrating the structure of a cutting device for cutting inclined surfaces of cardboard according to the present invention, A is a plan view, B is a side view, and FIG. 2 is a diagram illustrating the structure of a cutting table in the same device; FIG. 3 is a longitudinal sectional view illustrating the structure of the cutting table of the cutter portion. 3... Cutting table, 3a... Suction hole, 3A... Vacuum chamber, 6... Cutter, 7... Cutter holder, 12... Cutter lifting device.

Claims (1)

[Scope of claim for utility model registration] (1) A cutting table for setting cardboard,
A cardboard fixing support device that suctions and holds the cardboard set on the cutting table by applying vacuum force generated in the vacuum chamber by a vacuum generator to a suction port provided at a predetermined position on the upper wall of the cutting table. and a cutter that cuts the cardboard at an angle to the surface, and a cutter holder that holds the cutter, are slid toward the table surface so as to be close to each other in a direction parallel to the cut to be made in the cardboard at an angle of inclination. The device includes a cutter lifting device and a moving device for relatively moving the cutting table and the cutter, and forms an inclined surface on the cut end of the cardboard by the lifting and lowering of the cutter and the relative movement between the cutting table and the cutter. A cutting device for cutting an inclined surface of cardboard. (2) The cutting device for cutting inclined surfaces of cardboard according to claim 1, wherein the cutting table is constituted by a hollow box that can serve as a vacuum chamber for the cardboard fixing and supporting device. (3) The cutting device for cutting inclined surfaces of cardboard according to claim 1 or 2, in which the suction port of the cutting table has a large number of small holes. (4) The cutting device for cutting an inclined surface of cardboard according to any one of claims 1 to 3, wherein the cutting table is provided with a frame for positioning the cardboard to be placed thereon. (5) The cutting table is equipped with a resin undersheet on its upper wall to absorb the excess cut of the cutter when cutting cardboard, and the undersheet is equipped with a communication port corresponding to the suction port.Registered as a utility model. A cutting device for cutting an inclined surface of cardboard according to any one of claims 1 to 4. (6) The cutting device for cutting inclined surfaces of cardboard according to any one of claims 1 to 5, wherein the vacuum generator comprises a vacuum pump connected to a vacuum chamber.