JPH0723130Y2 - Cutting equipment - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for cutting a long-shaped material having an asymmetrical cross-section, and in particular, a portable device that can easily and easily cut a main girder of a cable rack formed in a ladder shape. It is a possible cutting device.

[0002]

2. Description of the Related Art Conventionally, various devices have been developed and used for cutting various long-shaped mold materials. For example, there is a cutting device described in Japanese Patent Publication No. 58-50808 as a cutting device having a die set and a sharp plate-shaped cutting blade similar to the present invention. In addition, a cut grinder using a disk grindstone is generally widely used as a portable and handy one.

[0003]

[Problems to be solved by the invention] Japanese Patent Publication No. 58-5
The cutting device of No. 0808 is one in which only a long-shaped mold material is placed through a die set and is sheared by a sharp plate-shaped cutting blade, and the main girder of a cable rack formed in a ladder shape is cut. It was impossible to cut, and the device was large and not easy to carry. In addition, the cut grinder can be moved to a narrow place and is easy to use, but sparks and chips are scattered at the time of cutting, dust is generated, and a large noise is generated, which is harmful to the work environment in terms of safety and beautification. there were.

Further, the cross-sectional shape of the main girder 25 of the cable rack 24 which is widely used at present is not symmetrical as shown in FIG. 4, and the cable rack has two parallel parallelly arranged oppositely. A large number of child girders 26 are passed between the main girders 25, 25 and transported to the site in the state of being assembled into a ladder, and the parent girders are appropriately cut and connected at the site, but this ladder state It is impossible to cut the main girder with the conventional hydraulic cutting device.Even if the parent girder on one side can be cut, the main girder on the other side can be cut in the longitudinal direction of the long shape material. Must be rotated in reverse (register rotation), and in reality, it is often impossible in space to rotate a cable rack having a length of about 3 m.

[0005]

SUMMARY OF THE INVENTION The present invention is to solve the above problems and is a ladder-shaped cable in which two oppositely arranged parent girders whose transverse cross sections are vertically asymmetrical are connected and fixed by a large number of child girders. Even in the case of a rack, the parent girders on the left and right sides can be easily and easily sheared simply by rotating (axially rotating) the cable rack with respect to the longitudinal axis.

That is, according to the present invention, in a device for cutting a long-sized die material by inserting and removing a sharp plate-shaped cutting blade into and from the cutting space of a die having a cutting gap in the center, The rear center of the die holder that secures
The die frame is rotatably supported on the inner surface of one vertical wall of the concave frame having an opening above, and the die holder is provided so as to be movable back and forth by air pressure or hydraulic pressure. The head plate-shaped cutting blade is fixed in correspondence with the cutting gap of the die, and the cover frame can be opened and closed in the opening above the concave frame, and can be fixed between both vertical walls of the concave frame at the closed position. It is characterized by being provided.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention.
Is the main girder 2 of the cable rack 24 that is the material to be cut on the front side.
A die having a recess 2 having the same shape as the shape of the back of the die 5 is fixed to the front surface of the die holder 4 with a constant cutting gap 3 provided in the middle. At the upper and lower ends of the rear of the die holder 4, slits 5 and 5 in the same direction as the cutting gap of the die are provided in the front-rear direction, and the center of the rear portion of the die holder has a concave frame 8 having an opening 7 at the top. It is fixed to the tip of a rod 22 which projects from the hydraulic cylinder 21 fixed to the outside of one vertical wall 9 to the inside of the vertical wall 9. In addition, 6 is in the front center of the die holder,
It is a slime provided on an extension line of the cutting gap of the die. Reference numeral 11 denotes an action ball for positioning the die holder 4, which is provided via a spring 12 so that a part of the action ball faces the slit 5 below the die holder from the bottom surface of the concave frame. Reference numeral 13 is a pointed plate-shaped cutting blade fixed to the inner surface of the other vertical wall 10 of the concave frame via a holder 14, and is provided corresponding to the cutting gap 3 at the center of the die. Reference numeral 15 denotes a cover frame having an inner surface provided with a fixed guide 16 by a feather key fitted into the slit 5 of the die holder, one end of which is rotatably supported by an upper portion of one vertical wall 9 of the concave frame 17, The other end can be locked by a pin 18 with the upper part of the vertical wall 10 at the other end of the concave frame. 19 is a handle provided on the upper surface of the cover frame, 20
Is a hole for shearing debris provided at the bottom of the concave frame,
Reference numeral 23 is a lock nut for fixing the hydraulic cylinder.

[0008]

The cover frame 15 above the concave frame 8 is opened as shown by the chain double-dashed line in FIG. 1, and the left main girder 24 of the cable rack shown in FIG. 4 is brought into contact with the front concave portion of the die 1. At this time, a block (not shown) is placed under the parent girder on the right side so that the right side of the cable rack does not descend. Next, the cover frame 15 is closed as shown in FIGS. 1 and 3, and the pin 18 is fixed to the right end of the cover frame 15. At this time, the fixed guide 16 on the inner surface of the cover frame is attached to the die holder 4
Since it fits into the slit 5 at the upper end of the die holder, the die holder becomes unrotatable.

Next, when the hydraulic cylinder 21 is operated and the rod 22 is moved forward, the dies 1 and 1 advance together with the die holder, and the cutting blade 13 is press-fitted into the cutting gap 3 of the die, whereby the master girder of the cable rack. 25 is cut by shearing. The sheared dust generated at this time falls from the drop hole 20 on the bottom surface of the concave frame.

When cutting the parent girder on the opposite side of the cable rack, the rod 22 is retracted to return the dice to its original position, the cover frame 15 is opened, and the cable rack is removed from the dice. While axially rotating with respect to the axis, the die holder 4 is manually rotated by 180 ° about the rod 22 to bring the slit 5 at the upper end into engagement with the action ball 11 on the bottom surface of the concave frame,
The left side main girder 24 of the axially rotated cable rack is brought into contact with the front recesses of the dies 1 and 1 which are turned upside down in the same manner as described above. Then, the cover frame 15 is closed in the same manner as described above, the fixed guide 16 is fitted into the slit 5 at the upper end, and the pin 18 is fixed to the right end of the fixed guide 16 to fix the rear rod 22.
When is moved forward, the left-hand parent girder is cut in the same manner as described above.

[0011]

According to the present invention, since the die holder having the fixed die can be rotated by 180 °, there is a great effect that the cutting of a long die having an asymmetric cross section can be performed only by rotating the shaft. In particular, it is difficult to cut the parent girder of a cable rack in which two parallel parent girders which are vertically asymmetrical are opposed to each other and which are formed in a ladder shape by a large number of child girders, only by rotating the cable rack axially. This has the effect of significantly improving work efficiency in the.

Further, since the cutting means is a shearing method utilizing hydraulic pressure or pneumatic pressure, noises as well as sparks and dust are not generated and a clean working environment can be maintained. Further, when cutting the main girder of the cable rack, since the outside is received by a die and the cutting blade in the shape of a pointed plate is positioned inside to perform shearing, burrs only occur outside but not inside. Therefore, when cutting the main girder of a cable rack that dislikes burr on the inner surface,
It is suitable because it does not require deburring.

[Brief description of drawings]

FIG. 1 is a side view of a central longitudinal section of a cutting device according to the present invention.

FIG. 2 is a plan view showing a state in which a cover frame is opened.

3 is a sectional view taken along the line AA of FIG.

FIG. 4 is a partial perspective view of a cable rack.

[Explanation of symbols]

 1 Die 3 Cutting Gap 4 Dice Holder 5 Slit 8 Concave Frame 9, 10 Vertical Wall 11 Action Ball 13 Cutting Blade 15 Cover Frame 16 Fixed Guide 18 Pin 21 Hydraulic Cylinder 22 Rod 24 Cable Rack 25 Parent Girder

Front page continuation (72) Inventor Masaaki Takahashi, Chuo 1-3-3, Edogawa-ku, Tokyo Inside Brest Industrial Research Institute, Inc. (72) Inventor, Satoshi Iwashige 1-3-3 Chuo, Edogawa-ku, Tokyo Brest, Inc. Industrial Research Institute

Claims (2)

[Scope of utility model registration request] 1. A die 1, 1 having a cutting gap in the center thereof.
In a device for cutting a long mold material by inserting and removing a sharp plate-shaped cutting blade 13 into the cutting space, a rear center of a die holder 4 for fixing the dies 1 and 1 is opened upward. Of the concave frame 8 is rotatably supported on the inner surface of one vertical wall, and the die holder 4 is provided so as to be movable back and forth by air pressure or hydraulic pressure, and the point plate is provided on the inner surface of the other vertical wall of the concave frame. -Shaped cutting blade 13 was fixed in correspondence with the cutting gap of the die, and a cover frame 15 could be opened and closed on the upper part of the concave frame and fixed between both vertical walls of the concave frame at the closed position. A device for cutting a mold material, which is characterized in that 2. The cutting device according to claim 1, wherein slits 5 and 5 in the front-rear direction are provided at the upper and lower ends of the die holder 4, and an action of which a part of the slits at the lower end faces the bottom surface of the concave frame 8. A device for cutting a die material, wherein a ball 11 is provided and a fixed guide 16 is provided on the inner surface of the cover frame 15 so as to be fitted into the slit 5 at the upper end when the cover frame is closed.