JPH07195295A - Cutting device of straight strip member - Google Patents

Abstract

PURPOSE:To provide a cutting device of a straight strip member of a wiring duct or the like that is simple in structure, dispensing with any trouble for work clamping. CONSTITUTION:This cutting device consists of a pair of guide blocks 4 and 4 installed with two groove type guide holes (5A and 5B) different in size according to the sectional form of a work W, a cutting blade 6 being installed in a clearance 9 between two guide blocks 4 and 4 free of lifting motion, and a cover 10 being attached after covering this clearance between these blocks 4 and 4 and interconnected to a duct collector 11. These guide blocks 4 and 4 are used for not only as a guide member passing the work W but a presser jig of the work W in combination.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device used for cutting a straight member having a groove-shaped or square-shaped cross section.

[0002]

2. Description of the Related Art As a concrete example of a straight member having a groove-shaped cross section, there is a wiring duct which is widely used as a coating guide for wiring inside a control panel and indoor wiring. This wiring duct will be used by cutting a long resin extruded molded product into a required size along with wiring work. that time,
If the number of cuts is small, the duct can be cut manually using a nipper or the like, but since it has to be cut little by little, it is tiring and time-consuming.

Therefore, when the number of cut ducts is large, it is unavoidable to use a high-speed cutting machine or the like, but the ducts made of resin lack rigidity, and at least the periphery of the cutting position is cracked due to chattering unless it is firmly restrained. Prone to In addition, it is pointed out that the fine powdery chips, which have a peculiar odor peculiar to the resin, are easily scattered at the time of cutting, and the deterioration of the site environment cannot be ignored.

[0004]

In order to solve the above problems, the applicant first proposed a processing device for positioning and cutting a straight member represented by a wiring duct or its lid. (See Japanese Utility Model Laid-Open No. 2-63939).

However, in the processing apparatus according to the above-mentioned proposals, the number of parts is large and the mechanism is complicated, so not only is the equipment expensive, but there is room for improvement in the following points. That is, in the conventional apparatus, as means for restraining and holding ducts (hereinafter, referred to as a work) at a processing position, the ducts (2) are attached to the upper surface and both side surfaces of the work.
Although the clamps operated by a total of six cylinders are brought into contact with each other to hold the work, the work efficiency cannot be increased because the clamp mechanism requires an operating time. Also,
Since the processing part is largely open in the insertion direction of the workpiece, the chips are likely to scatter, and the dust collector also needs to have a large suction capacity.

In view of these problems, it is an object of the present invention to provide a cutting device for a straight member such as a wiring duct which does not require the work of a work clamp and has a simple structure.

[0007]

The present invention employs the following means as a cutting device for achieving the above object.

The first means comprises a pair of guide blocks provided with groove-shaped guide holes, and a cutting blade provided in a gap between the guide blocks so as to be movable up and down. Here, the groove-shaped guide hole provided in the guide block corresponds to the cross-sectional shape of the work. This guide block can be replaced according to the sectional shape of the work.

The second means is to provide a plurality of groove type guide holes of different sizes in the guide block, and the third means is to add to the first or second means. The cover for communicating with the dust collector is attached so as to cover the gap of the guide block in which the cutting blade is vertically movable.

[0010]

If the first means is adopted, the work can be immediately cut by raising the cutting blade provided in the gap between the guide blocks as long as the work is positioned through the guide holes provided in the pair of guide blocks. can do. That is, when the work is cut, the work is brought into contact with the inner walls of the guide holes of the guide blocks arranged on both sides of the cut portion and firmly bound, so that no special clamping means is required.

Further, according to the second means, even if the size or shape of the work is changed, it can be dealt with by selecting the insertion positions of the plurality of guide holes provided in the guide block. Further, according to the third means, Since the cover can cover the cut portion between the guide blocks in an airtight manner, the dust collection efficiency can be improved.

[0012]

1 and 2 show an embodiment of a cutting apparatus according to the present invention, which uses the above-mentioned first to third means in combination.

In FIG. 1, reference numeral 1 is a pedestal, 2A and 2B are pedestals for a work W extending on both sides of the gantry 1. Stand 1
A pair of left and right guide blocks 4 and 4 are installed on the upper side of the work cutting site (cutting blade lifting hole) 3.

Basically, as shown in FIG. 3, the lower surface of the guide block 4 is provided with a groove-shaped guide hole 5 (a lower side portion 5A, a side portion 5B) corresponding to the sectional shape of the work W. . The shape of the guide hole 5 is slightly larger so that the work W can be loosely inserted, and more specifically, the width of each part is slightly larger than the wall thickness of the work W, and the lateral side part 5B has a vertical dimension. Sufficient margin is formed.

The guide block 4 can be exchanged depending on the sectional shape of the work W, but in the case of the illustrated embodiment, as shown in FIG. 4, the size of the work W (W
1, W2, W3, W4) and guide hole 5 even if the shape changes
In order to easily cope with this by selecting the insertion position of the guide block 4, the guide block 4 is wrapped with the lower side portion 5A, and a plurality of groove-shaped guide holes (side portions 5B1 to 5B) are formed.
4) is provided, and as a result, the guide block 4
Is formed in a comb shape with a large number of slits cut out in the width direction.

Inside the gantry 1, a cutting blade (cutting grindstone) 6 rotated by a motor (not shown) is guided by a guide block 4,
It is provided so that it can be raised and lowered from the cutting blade raising / lowering hole 3 opened between the cutting blades 4. This cutting blade 6 is supported on a swing support plate 7 whose one end is rotatably supported by the inner wall of the gantry 1, and a cylinder 8 pivotally connected to the lower surface of the other end of the support plate 7. It is designed so that it can be raised and lowered in conjunction with expansion and contraction.

A transparent cover 10 made of acrylic resin or the like is attached to the upper surfaces and the both side surfaces of the pair of guide blocks 4 and 4 facing each other with the cut portion 3 of the work W interposed therebetween. The cover 10 and the dust collector 11 communicate with each other via a hose 12.

In addition, in FIG. 1, 13 is a work stopper for positioning provided on the mounting table 2B on the insertion side of the work W, and 14 is a scale for measuring the work cutting length.

With the cutting device configured as described above, the work W can be positioned by passing it through the guide holes 5, 5 of the pair of guide blocks 4, 4 provided on the gantry 1. By raising the cutting blade 6 disposed below the gap 9 of 4, it is possible to immediately cut the work W without using a clamping means. That is,
At the time of cutting the work, the work W pushed up by the cutting blade 6 and cut into the work is brought into contact with the guide hole inner walls 5a and 5b (see FIG. 3) of the guide blocks 4 arranged on both sides of the cutting portion 3 to be firmly restrained. The guide blocks 4 and 4 also serve as a holding jig for the work W.

As shown in the illustrated embodiment, if each guide block 4 is provided with a plurality of guide holes 5 and is formed in a comb-like shape, the insertion position of the guide holes 5B is selected.
As shown in FIG. 4, the apparatus can be used for cutting work of a plurality of works W having different sizes without replacing the guide blocks 4 and 4. The applicable shape of the work W is not limited to the channel type such as the wiring duct or the lid thereof, and may be an angle or flat plate straight member.

Further, in the above cutting device, the work W is cut at the closed place surrounded by the guide blocks 4 and 4 and the cover 10, so that the safety is ensured and the cover 1 is also provided.
Since the gap 9 between the blocks that hits the cut portion 3 can be airtightly covered by 0 except the opening of the guide hole 5,
The dust collection efficiency of the chips generated by the cutting is improved, and at the same time, the dust collector 11 can be a small one having a small suction capacity.

In the case of the apparatus of the embodiment, the insertion and feeding operation of the work W and the positioning operation to the cutting position are configured to be performed manually, but a dedicated work feeding operation that is manually or automatically operated. Of course, it is also possible to add a mechanism or a positioning mechanism.

[0023]

As described above, in the cutting apparatus of the present invention, the pair of guide blocks provided with the groove-shaped guide holes are used not only as guide members but also as a jig for holding the work. In this case, no clamp means for restraining and holding the work is required. Therefore, a simple structure of the device is sufficient, and the waiting time for the clamp operation is not required as in the past, and the cutting work can be quickly performed in the continuous process.

Further, by providing a plurality of groove-shaped guide holes having different sizes in the guide block, even if the work size or shape is changed, it is possible to select the insertion positions of the plurality of guide holes provided in the guide block. The versatility of the device that can cope with it is realized, and if the cover is attached to cover the gap of the guide block, work safety and dust collection efficiency can be secured, the site environment is improved and the size of the attached dust collector is small. It can be realized.

[Brief description of drawings]

FIG. 1 is a perspective view of a cutting device showing an embodiment.

FIG. 2 is a cross-sectional view of the mount shown in FIG.

FIG. 3 is a front view showing a basic form of a guide block.

FIG. 4 is a front view of the guide block shown in FIG.

[Explanation of symbols]

 W (W1, W2, W3, W4) Work 1 Stand 2A, 2B Work rest 3 Work cutting site (cutting blade lifting hole) 4 Guide block 5 Groove type guide hole 5A Lower side 5B Side 6 Cutting blade (cutting) (Whetstone) 7 Swing support plate 8 Cylinder 9 Gap 10 Cover 11 Dust collector 12 Hose 13 Work stopper 14 Scale

Claims (3)

[Claims] 1. A cutting device for a straight member, comprising a pair of guide blocks provided with groove-shaped guide holes, and a cutting blade provided in a gap between the guide blocks so as to be able to move up and down. 2. A straight-line member cutting device comprising a pair of guide blocks having a plurality of groove-shaped guide holes of different sizes and a cutting blade provided so as to be vertically movable in a gap between the guide blocks. . 3. A pair of guide blocks having one or a plurality of groove-shaped guide holes of different sizes, a cutting blade which is vertically movable in a gap between the guide blocks, and a cutting block which is attached so as to cover the gap between the guide blocks. A device for cutting a straight member, comprising a cover in communication with a dust collector.