JP2006205334A - Cutter - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a useful cutter capable of easily and smoothly cutting, without cutting a projection such as a joint plate, a guide piece, a suspension piece or an erection piece mainly projected in a connecting part such as a steel frame column in a steel frame structure or a reinforced concrete structure by a burner. <P>SOLUTION: This cutter has a body frame 1 formed in a gate shape, an electromagnet part 2 detachably installed in a fixing part such as the steel frame column, and a cutting hand blade 3c rotatably arranged in the body frame 1. The body frame 1 has a cutting opening part 1a opened for allowing the projection such as the erection piece, a handle 1b extended to the side end of the body frame 1, and attachments 4 and 4 oppositely arranged in the cutting opening part 1a. The attachments 4 and 4 are composed of a pair of upper-lower angle adjusting parts cut out to communicate with the edge in the longitudinal direction, and a guide part formed on the base side for blocking an upper surface of a cutting blade 3c. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention cuts a projection such as a joint plate, a guide piece, a suspension piece or an erection piece, which is mainly provided at a connection portion such as a steel column in a steel structure or a reinforced concrete structure, easily and smoothly without cutting with a burner. It relates to a useful cutting machine that can.

Conventionally, in the cutting of such steel columns, for example, a joint plate along the longitudinal direction of the column is welded to the end portion to be joined of the square steel column, and the steel column between the upper and lower sides is welded to both sides of the plate. Since the erection piece is temporarily fixed by fastening the attached splice plate with bolts, after welding between steel columns, the joint plate is cut with a gas burner from a position about 10 mm away from the column surface. This is the current situation (see Patent Document 1).
JP-A-6-185114

  However, in the conventional cutting method, after welding between steel columns, all joint plates must be cut with a burner, so the workability is poor, and the columns are damaged by fire, dust, smoke, etc. , Has a problem of generating a flame.

  Moreover, since the conventional cutting method cannot be cut from the base of the joint plate, the cut traces (convex portions) of the cut plate remain on the surface of the column, and it takes time to finish the sander and the like. At the same time, it has become a social problem, such as causing noise pollution for a long time.

  The present invention has been made in view of such conventional problems, and is useful for cutting projections such as a joint plate, a guide piece, an erection piece or a suspension piece easily and smoothly without fear of a flame. The purpose is to provide a machine.

  In order to solve the conventional problems as described above and achieve the intended purpose, the structure as the gist of the present invention is a cutting opening which is opened to allow cutting means such as a band saw and projections such as an erection piece. And a attachment for suppressing the vertical movement of the cutting means, and a drive gear linked to the drive motor, and a predetermined distance from the drive gear. A cutting machine comprising a driven gear, a cutting means such as a band saw that is activated via the driven gear and the drive gear, and a cutting opening that allows projections such as an erection piece between the two gears. Exist.

  The attachment may include an angle adjusting portion that is opened to communicate with a longitudinal edge, and a guide portion that is formed on the base side and blocks the upper surface of the cutting means.

  A cutting means such as a band saw, a cutting opening that is opened to allow protrusions such as an erection piece, and an attachment for suppressing the vertical movement of the cutting means are provided. By moving the projection in the longitudinal direction along the root, there is an effect that the projection can be cut well from the root.

  Further, a drive gear linked to the drive motor, a driven gear provided at a certain interval from the drive gear, a cutting means such as a band saw that starts via the driven gear and the drive gear, and both gears Since the projection opening such as the erection piece or the like is provided with a cutting opening that allows the projection such as the erection piece to be cut more easily and smoothly with a small force, there is less noise, and Since the trouble of cutting with a burner as in the prior art can be saved, there is an effect that it is possible to eliminate concerns such as smoke and flame.

  Further, the attachment includes an angle adjusting portion that is opened to communicate with the longitudinal edge, and a guide portion that is formed on the base side and blocks the upper surface of the cutting device, thereby preventing the cutting device from being lifted. As a result, it is possible to cut smoothly from the base of the protrusion, so that the cut trace (convex part) of the plate cut on the surface of the column as in the conventional case does not remain, and accordingly, a sander or the like Since the time required for finishing work can be shortened and the amount of cutting per day can be increased, the construction period can be further shortened, and the blindfolding process, final finishing or fireproof coating work can also be made beautiful.

  A drive gear linked to the drive motor, a driven gear provided at a certain interval from the drive gear, a cutting means such as a band saw that starts via the driven gear and the drive gear, and a gap between the two gears. And an opening for allowing protrusions such as an erection piece and an attachment for suppressing the vertical movement of the cutting means, and the attachment is open to communicate with the longitudinal edge. And a guide portion formed on the base side and standing on the upper surface of the cutting means.

  Next, a first embodiment of a cutting machine according to the present invention will be described with reference to the drawings. In the drawing, A is a cutting machine according to the present invention. As shown in FIGS. 1 to 3, the cutting machine A has a main body frame 1 formed in a gate shape and a fixing part (not shown) such as a steel column. The electromagnet portion 2 is detachably attached to the main body frame 1 and the cutting means 3 is rotatably provided on the main body frame 1.

  The main body frame 1 includes a cutting opening 1a opened to allow projections such as an erection piece between a pair of gears described later, a handle 1b extended to a side end of the main body frame 1, Attachments 4 and 4 (see FIG. 3) provided to be opposed to the cutting opening 1 a are provided.

  The cutting opening 1a is formed in a size that allows the projection C such as a guide piece, a joint piece, or an erection piece, and a cutting blade 3c described later is opened in a direction orthogonal to the projection C.

  As shown in FIG. 4, the attachments 4, 4 are formed on the base 4 c side so as to stand up on the upper surface of the cutting means 3 and a pair of upper and lower angle adjusting portions 4 b, 4 b opened to communicate with the longitudinal edge 4 a. It is comprised from the guide part 4d made.

  The angle adjusting portions 4b and 4b are attached to the inner peripheral surface of the cutting opening 1a via angle adjusting bolts 5 and 5, and are screwed into a state where not only angle adjustment but also adjustment in the front-rear direction is possible. Is done.

Further, the guide portion 4d includes a loose fitting slit 4d ₁ formed to have a size allowing the thickness of a cutting blade such as a band saw, and a height adjusting spiral 4d ₂ for adjusting the height of the loose fitting slit 4d _1. It is provided and prevents lifting due to the rotation of the cutting blade 3c.

  On the other hand, the electromagnet portion 2 is provided with electromagnets 2b, 2b,... Via attachment arms 2a. The electromagnets 2b, 2b,... Can be detachably attached to a steel column fixing portion (not shown) by switching on and off the electromagnetic switches 2c, 2c,.

  Moreover, the electromagnet part 2 supports the main body frame 1 rotatably via the rotating arm 2d. That is, as shown in FIG. 5, the rotary arm 2d is pivotally mounted so that the main body frame 1 can be rotated in both the forward and reverse directions with the rotary arm 2d as a central axis. It can be rotated smoothly by using pivoting means such as (not shown).

  On the other hand, as shown in FIG. 2, the cutting means 3 includes a driving roller (main pulley) 3a and a driven roller (guide pulley) 3b that are spaced apart from the left and right ends of the main body frame 1, and both rollers 3a, There is provided a cutting blade (cutter) 3c such as a band saw, which is rotatably supported between 3b, and a drive motor 3d which activates the drive roller 3a.

  The cutting blade 3c is made of, for example, a band saw or a wire-type rotary cutter (wire saw) and is rotated at high speed via the rollers 3a and 3b. reference).

  Further, although not shown, the drive motor 3d may be attached to the main body frame 1 via a plate-like height adjusting member supported by a repellent body for absorbing vibration. Incidentally, as the height adjusting member, for example, a helical interval adjusting unit is provided below the repellent body, and the drive motor 3d can be displaced in the vertical direction by rotating the interval adjusting unit. Easy and convenient.

  As shown in FIG. 3, the cutting machine A of this embodiment configured as described above is inserted into the projection C such as an erection piece to be cut by inserting the electromagnetic switches 2c, 2c,. Then, the main body frame 1 is rotated around the rotating arm 2d to check whether the projection C can be properly submerged in the cutting opening 1a, and the height of the cutting blade 3c. After the adjustment, the drive motor 3d is turned on to rotate the drive roller 3a, and the cutting blade 3c is rotated at high speed by the rotational force to start the cutting operation.

  Next, the cutting means 3 is moved along the lower end of the projection C while manually rotating the main body frame 1 about the rotary arm 2d, so that the projection C is smoothly cut from the root by the cutting blade 3c. can do.

  Further, during operation, even if the cutting blade 3c tries to float with the force of the cutting blade 3c rotating or sliding at a high speed, it can be prevented by pressing the guide 4d of the attachment 4. Therefore, the initial positioning can be performed horizontally from the base portion of the protrusion C without any deviation.

  Furthermore, it goes without saying that safety is also taken into consideration such that when the cutting blade 3c breaks or a base abnormality occurs, a sensor (not shown) is activated to stop the drive motor 3d and the like. Absent.

  As described above, in the cutting machine of the present invention, the working conditions are greatly improved as compared with the prior art, such as the projection C such as the erection piece can be cut more easily and more smoothly with a small force. There is no need to worry about cutting, so there is no need to worry about smoke or flames. In addition, the cut traces (convex parts) of the cut plate remain on the surface of the pillar, which was a problem with conventional cutting methods. That much time is required for finishing work such as sanders, noise pollution for a long time, and floating of the cutting blade. Since the amount of work (cutting amount) per day can be increased, the construction period can be further shortened, and the blindfolding, final finishing or fireproof coating can be made beautiful.

  Next, a second embodiment of the present invention will be described with reference to FIGS. In order to facilitate understanding, the same parts as those in the first embodiment described above are denoted by the same reference numerals, and only parts having different configurations will be described with new numbers.

  In FIG. 6, reference numeral 5 denotes an axial pole for attaching the main body frame 1 to a curved surface such as a cylinder, and the center pole 5 penetrates the main body frame 1 in a direction orthogonal to the main frame 1 as shown in FIG. At the same time, the main body frame 1 is slidably supported.

  In other words, the axial pole 6 as a whole has a bowl-like shape, the electromagnet portions 2 and 2 are projected from both free ends, and a fixing portion B such as a steel frame is provided with a temporary or cylindrical column. Even if it is a curved surface, etc., it is provided along the longitudinal direction (axial direction) of the fixed portion B so that the main body frame 1 can be stably adsorbed, and the main body frame 1 is slidably supported. .

  As in the first embodiment, the cutting machine of the present embodiment configured as described above is inserted into the electromagnetic switches 2c, 2c... Of the electromagnets 2b, 2b. After adjusting the height of the blade 3c, the drive motor 3d is switched on and the cutting blade 3c is rotated at a high speed by the rotational force of the drive roller 3a. After that, the main body frame 1 is slid on the shaft pole 6. By doing so, the projection C passes through the cutting opening 1a and can be cut from the root.

  The cutting machine of the present invention is not limited to the present embodiment, and can be freely designed and modified within the scope of the object of the present invention. The present invention encompasses all of them. For example, in the present embodiment, a horizontal (horizontal) drive motor 3d is used as the cutting means 3, but the drive motor 3d may be a vertical (vertical) drive without being limited thereto. Furthermore, the cutting means 3 may be automatically driven with respect to the axial pole 6 by using an air regulator 6 or an electric gear (not shown).

It is a front view which shows 1st Example of the cutting machine which concerns on this invention. It is a top view of the cutting machine. It is a perspective view of the cutting machine. 4A is a plan view of an attachment used in this embodiment, FIG. 4B is a front view thereof, and FIG. 4C is a right side view thereof. It is explanatory drawing which shows the use condition of the cutting machine. It is a front view which shows 2nd Example of the cutting machine which concerns on this invention. It is a top view of the cutting machine. FIG. 8A is a right side view of the cutting machine, and FIG. 8B is a left side view of the cutting machine.

Explanation of symbols

A cutting machine B fixed part C projection 1 main body frame 1a cutting opening 1b handle 1c main body cover 2 electromagnet part 2a mounting arm 2b electromagnet 2c electromagnetic switch 2d rotating arm 3 cutting means 3a driving roller (main pulley)
3b Follower roller (guide pulley)
3c Cutting blade (cutter)
3d Drive motor 4 Attachment 4a Longitudinal edge 4b Angle adjustment part 4c Base 4d Guide part 4d ₁ Free fitting slit 4d ₂ Height adjustment spiral 5 Angle adjustment bolt 6 Axis pole

Claims (3)

  A cutting machine comprising: a cutting means such as a band saw; a cutting opening formed in a size allowing projections such as an erection piece; and an attachment for suppressing the vertical movement of the cutting means. .   A drive gear linked to the drive motor, a driven gear provided at a certain interval from the drive gear, a cutting means such as a band saw that starts via the driven gear and the drive gear, and a gap between the two gears. And a cutting opening that allows protrusions such as an erection piece.   The said attachment is provided with the angle adjustment part opened so that it might communicate with a longitudinal direction edge, and the guide part which is formed in a base side and blocks up on the upper surface of a cutting | disconnection means, It is characterized by the above-mentioned. Cutting machine.

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