JPH0733530U - Chip scattering prevention cover of cutting device - Google Patents

Abstract

(57) [Summary] [Object] The present invention relates to a chip scattering prevention cover for preventing chips scattered around a cutting device when a workpiece is cut by a rotary blade. A base having a fixed arm and a fixing device for holding a workpiece, and a motor supported by one end of the fixed arm and provided with a rotary blade on one side and a rotary drive on the other side. And a movable arm provided with a movable arm. A pressing piece for rotating the cover is provided on either one of the ends of the feed handle supported and attached to the arm. Since the cover can be put on or released from the work piece in conjunction with the vertical movement of the feed handle of the cutting device, it is not necessary to operate the cover separately, and the cutting work is performed efficiently. be able to.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chip scattering prevention cover for preventing chips scattered around a cutting device when a workpiece is cut by a rotary blade attached to a movable arm.

[0002]

[Prior art]

 Conventionally, in order to cut a work piece such as an angle steel material, a shaped steel material, and a reinforcing bar, a cutting device in which a movable arm provided with a rotary blade is moved by a feed handle is used. When cutting a workpiece using this cutting device, after fixing the workpiece on the base, move the feed handle downward and attach it to one end of the movable arm that interlocks with the feed handle. When a work piece is cut with a rotary blade, chips are vigorously discharged from the cutting point. This chip has the problem that it is rolled up by the rotation of the rotary blade, or hits the work piece or the base and bounces off, so that it is widely scattered around.

[0003]

[Problems to be solved by the device]

 The chips that are discharged by cutting the work piece with the rotary blade, the chips that are wound up by the rotation of the rotary blade, and the chips that have bounced off by hitting the base etc. are scattered around. There is a danger that the chips will spread widely around the cutting device and hit the face and hands of the worker. If the chips widely spread around the work area, it will be very troublesome to clean after the work. Have a problem. Therefore, the present invention is intended to prevent the scattering of chips during the cutting work and to perform the work safely.

[0004]

[Means for Solving the Problems]

 According to the present invention, a base having a fixed arm and a fixing device for holding a work piece, and a rotary blade supported on one end of the fixed arm and provided with a rotary blade on one side, and a motor for driving the rotary blade on the other side. A movable arm provided with a rotor, a cover for covering the workpiece is rotatably attached to the base, and one end of the movable arm or the fixed arm is used as a fulcrum. A constitution in which a pressing piece for rotating the cover is provided on one of the ends of the feed handle supported and attached to the movable arm is means for solving the above problems.

[0005]

[Action]

 The pressing piece attached to the tip of either the feed handle or the movable arm engages with the receiving piece provided at one end of the cover attached to either the fixed arm or the fixed base or the base. And one end of the cover is lifted. When the handle portion side of the feed handle is moved downward, the movable arm rotates downward with the approximately middle portion of the feed handle as the fulcrum, and one end of the feed handle is lifted with the first bracket as the fulcrum and received. The cover, which is separated from the piece and has the receiving piece, rotates downward by its own weight to cover the workpiece. When the feed handle is moved downward and the cormorant is cut with a rotary blade, the chips prevent the chips from scattering. Further, after the cutting work is completed, when the feed handle is rotated upward to return to the original position, the pressing piece attached to one end of the feed handle or the movable arm pushes down the receiving part piece. The cover is rotated upward with the support shaft as a fulcrum, lifted from the workpiece and returned to its original position.

[0006]

【Example】

 The present invention will be described with reference to the drawings of an embodiment. In FIG. 1, reference numeral 1 is a cutting device, which is a caster 3 for moving and fixing casters 3 at four corners of a lower surface of a base 2 formed in a substantially rectangular shape when seen from a plane. The legs 4 are attached to the bases 2, and a fixing device 5 for holding a workpiece is provided on the upper surface of the base 2. This fixing device 5 is composed of a fixed base 6 provided on the base 2 and a movable base 7, and is movable by rotating a handle 9 attached to one end of a screw rod 8 screwed on the movable base 7. Adjust the stand 7 back and forth. A shaft supporting portion 11 provided on the top of a fixed arm 10 which is erected on one side of the upper surface of the base 2 rotatably supports a middle portion of a movable arm 13 formed in a substantially L shape. is there. A rotary blade 15 for cutting a workpiece is attached to one end of the movable arm 13, and a peripheral portion of the rotary blade 15 is covered with a fixed cover 16 and a movable cover 17, respectively. A latch plate 17a is provided at the lower end of the movable cover, and the fixed cover 16 and the movable cover 17 are axially attached to the shaft stopper 14 coaxially with the rotary blade 15.

A motor 18 for rotating the rotary blade 15 is attached to the other end of the movable arm 13, and the motor 18 and the rotary blade 15 are interlocked by a chain or belt not shown. I am allowed. Reference numeral 19 is a cover such as a chain or a belt. Reference numeral 20 is a first bracket rotatably attached to the front side of the fixed arm 10 by a bolt 21a. A second bracket 24 is rotatably attached to the movable arm 13 pivotally supported by the shaft support portion 11 at the same front side as the first bracket 20 by a bolt 24a. The 2 bracket 24 has a sliding hole.

Reference numeral 26 denotes a rod-shaped feed handle, which is fixed by a screw 21 b provided on the first bracket 20 and is slidably attached to the second bracket 24, and the rear end of the feed handle and the second bracket 24. The first bracket 20 is located at an intermediate portion between and. The first bracket 20 is rotatably supported below the shaft supporting portion 11 provided on the fixed arm 10, and the second bracket 24 is mounted so as to be located above the movable arm 13. The shaft support 11 is located between the two brackets. The feed handle 26 rotates about the first bracket 20 as a fulcrum, and moves with the movable arm 13 while slidably engaging with the second bracket supported by the movable arm 13.

Reference numeral 27 is a pressing piece that is adjustably attached to the tip of the feed handle 26, and is fastened by a tightening screw 28. Reference numeral 30 denotes a support shaft which is pivotally supported by the fixed arm 10 and which is provided on the front side of the fixed arm 10 and close to the rear end portion of the feed handle 26 located before the cutting work. is there. A flat plate-shaped cover 32 is rotatably supported on one end of the support shaft 30, and a receiving portion is provided on the outside of the support shaft 30 to engage with a pressing piece 27 attached to the rear end of the feed handle 26. A piece 34 is provided. The receiving part 34 may be the cover 32 itself. The cover 32 may be formed of a transparent member or an opaque member, and the other end of the cover 32 may have an abutting piece 33 bent or curved downwardly as an integral or separate body. Alternatively, one end of the corresponding contact piece may be brought into contact with the workpiece 50 or the movable base 7. Reference numeral 50 denotes a work piece such as an angle steel material, a shaped steel material, or a reinforcing bar. The cover 32 may be rotatably provided on the base 2 or the fixed base 6 via a mounting portion (not shown), and the pressing piece 27 may be provided at one end of the movable arm. It's good.

Next, the operation of the present embodiment will be described. First, the casters 3 of the base 2 in which the legs 4 are respectively raised and lowered are placed on the floor surface, and the casters 3 are used. After moving the base 2 to an arbitrary position and setting it in a place where the workpiece can be easily cut, the legs 4 are rotated to raise the base 2 and move the casters 3 away from the floor. The base is fixed in place. Next, the workpiece 50 is placed on the base 2, and the grip 9 of the fixing device 5 including the fixed base 6 and the movable base 7 is rotated and tightened to prepare for the cutting work. First, a switch (not shown) is inserted, the motor 18 is rotated, and the rotary blade 15 is rotated via a chain, a belt or the like (not shown), and as shown by an arrow M in FIG. When the feed handle 26 is moved downward, the feed handle 26 moves downward around the bolt 21a of the first bracket 20, and the pressing piece 27 provided at the rear end of the feed handle 26 moves upward. When the pressing piece 27 rises, the cover 32 rotates around the support shaft 30 and the receiving piece 34 also moves upward. Further, when the feed handle 26 is moved downward, the pressing piece 27 is separated from the receiving piece 34, and since the cover 32 has the center of gravity in the front end direction, the cover 32 rotates downward about the support shaft 30 by its own weight, While covering the workpiece 50, the tip of the cover 32 contacts the movable table 7 on the base 2. Further, when the movable arm 13 moves downward together with the feed handle 26, the retaining plate 17a provided at one end of the movable cover body 17 contacts the movable base 7 on the base. Further, when the movable arm 13 is rotated downward and the rotary blade 15 is fed to the workpiece side, the movable cover body 17 is rotated on the fixed cover body 16.

When the rotary handle 15 is pressed against the workpiece 50 by moving the feed handle 26 downward to perform a cutting operation, the cutting chips hit the inner surface of the cover 32 and fall, so that the chips do not scatter around. . Therefore, the worker can safely perform the work and also can easily perform the cleaning after the end of the work. Further, by forming the cover 37 transparent or semi-transparent, it is possible to perform work while checking the cut portion of the workpiece, or to cut while checking the accumulation state of the cutting chips. Further, after the cutting work is completed, when the feed handle 26 is moved upward, the rear end of the feed handle 26 is moved downward, and the pressing piece 27 comes into contact with the receiving portion 34 of the cover body 32, so that the receiving portion 34 is moved. In order to push the piece downward, the cover 32 rotates upward about the support shaft 30 and stands up apart from the workpiece 50.

[0012]

[Effect of device]

 The present invention allows the cover to be placed on or released from the work piece by interlocking with the vertical movement of the feed handle of the cutting device, thus eliminating the need to operate the cover separately and efficiently. Can perform cutting work. Also, since the work covers the upper part of the work piece, it is possible to prevent scattering of cutting chips during cutting, and to prevent the scattering of cutting chips, prevent injury to workers and cut safely. It has the advantage of being able to carry out work and, in addition, being able to easily and efficiently perform cleaning after work.

[Brief description of drawings]

FIG. 1 is a front view of a cutting device according to the present invention.

FIG. 2 is a front view showing a state in which a feed handle is moved downward to cut a workpiece.

FIG. 3 is a right side view of the cutting device with a part omitted.

[Explanation of symbols]

 1 Cutting Device 2 Base 5 Fixing Device 10 Fixed Arm 13 Movable Arm 15 Rotating Blade 18 Motor 26 Feed Handle 27 Pressing Piece 30 Support Shaft 32 Cover 50 Workpiece

Claims (1)

[Scope of utility model registration request] 1. A base having a fixed arm and a fixing device for holding a workpiece, and a rotary blade supported on one end of the fixed arm and provided on one side to drive the rotary blade on the other side. A movable arm provided with a motor, a cover for covering the workpiece is rotatably attached to the base, and one end of the movable arm or the fixed arm is used as a fulcrum. A chip scattering prevention cover for a cutting device, characterized in that a pressing piece for rotating the cover is provided at either one end of a feed handle supported and attached to the movable arm.