KR101933654B1 - Portable device for cutting beam steel - Google Patents

Abstract

The present invention relates to a device for cutting various types of sections based on a portable structure comprising: a main body (10) for mounting a cutter (15) on a frame (11) of a bent structure extending over a section steel; a rotating means (20) for causing a change in cutting angle between the main body (10) and the cutter (15) through a movable base (22); and a fixing means (30) for realizing detachment and attachment of the vise (32) mounted on the main body (10) to the section steel in connection with a magnetic force member. Therefore, the steel sheet is able to be cut into a desired length in a fast and stable clamping state on the steel frame based on a lightweight structure, and is able to easily adjust the cutting angle to be inclined, thereby preventing accidents and improving productivity.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a mechanism for cutting a section steel, and more specifically, to a portable steel section cutting mechanism for cutting a section to a desired length while being temporarily clamped to various sections.

Generally, H-shaped steel, L-shaped steel and the like are used as structural materials for various buildings and machinery, and the size of a device for cutting to a predetermined length is generally large, which is inconvenient and accompanies a risk. As a prior art document relating to the solution of these disadvantages, reference can be made to Korean Patent Registration No. 1711915 (Prior Art 1) proposed by the present applicant.

The prior art document 1 has a cutter body portion, a cutting portion rotatably arranged on the cutter body portion, a vise body portion detachably connected to the cutter body portion and surrounding at least a part of the material to be cut, And a clamping unit for pressing and fixing the object to be cut. Accordingly, the effect of facilitating the cutting operation is expected by changing the arrangement of the fixed vice body portions.

However, according to the prior art document 1, as the size of the H-beam or L-beam increases, handling is inconvenient and it is difficult to cut the beam.

As another prior art document, Korean Patent Registration No. 1612324 (prior art document 2) is known.

Prior Art 2 is a height adjuster installed on the main base for raising or lowering the height; A base fixing handle for fixing the main base; A rotary plate rotatably installed on an upper surface of the main base, the rotary plate having a receiving groove for receiving a cutting edge; A digital angle indicator installed on the turntable to display a rotation angle; And the like. Therefore, it is expected that accurate slant cutting can be performed, the horizontal can be easily adjusted, and the transportation can be facilitated.

However, the prior art 2 has a complicated structure, which is cumbersome and has low portability and has low usability for cutting of H-shaped or L-shaped steel having a bent section.

Korean Patent Registration No. 1711915 entitled "Cutting Device" (Publication Date: Mar. 13, 2013). Korean Patent Registration No. 1612324 entitled " Precision Sliding Angle Cutter "(Published on 2014.04.12.)

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems of the related art by providing a portable steel-frame cutting mechanism which is convenient for cutting a desired length in a fast and stable clamping state to various shapes of slabs, .

In order to accomplish the above object, the present invention provides a mechanism for cutting various types of sections based on a portable structure, comprising: a main body for mounting a cutter on a frame having a bent structure extending over a section steel; Rotating means between the main body and the cutter for causing a change in cutting angle through a movable base; And a fixing means for realizing detachment and attachment of the section steel by connecting the vise mounted on the main body and the magnetic force member.

As a detailed configuration of the present invention, the rotating means is characterized in that arc-shaped grooves are formed on a movable table mounted on a main body via a hinge, and angle fluctuations of the movable table are interrupted by using bolts on arc-shaped grooves.

As a detailed configuration of the present invention, the fixing means is characterized in that the permanent magnet and the ball plunger are used as a magnetic force member, or the magnetic force is interrupted by using the mag switch as a magnetic force member.

As a modification of the present invention, the main body includes a moving roller member provided so as to easily move in a state where it extends over a section steel, and a size adjusting member provided so as to display a cutting dimension corresponding to the movement of the section steel.

As a further modification of the present invention, the fixing means includes a bevel gear accommodated in the casing, a knob fixed to the input side of the bevel gear, a helical shaft fixed to the output side of the bevel gear, .

Industrial Applicability As described above, according to the present invention, it is possible to cut a steel strip into a desired length in a fast and stable clamping state on a steel frame on the basis of a lightweight structure, and to easily adjust a cutting angle to be inclined, thereby preventing a safety accident and improving productivity.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view showing a main part of a cutting mechanism according to the present invention;
Fig. 2 is a schematic view showing the operation before and after the operation of the cutting mechanism according to the present invention
Figure 3 is a photograph showing the actual use of the cutting mechanism according to the invention
Figs. 4 to 6 are diagrams showing a configuration of a cutting mechanism according to a modification of the present invention

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention proposes a mechanism for cutting various sections based on a portable structure. H-section, L-section, C-section, and the like, but is not limited thereto. That is, the present invention can be applied to a case having a more specific cross-sectional shape besides H-shaped, L-shaped and C-shaped. The portable structure is aimed at the size and weight that one operator can move or push.

According to the present invention, a cutter (15) is mounted on a frame (11) of a folded structure in which a main body (10) extends over a section steel. The main body 10 has a structure that is bent to be "a" or "c" so as to directly extend to the section steel to be cut, not to the ground. The frame 11 can be clamped to a portion corresponding to a flange protruding to one side or both sides of the H-shaped, L-shaped and C-shaped steel. The cutter 15 is mounted so as to be tightly supported on the frame 11 of the main body 10 as a circular saw having a portable structure.

1, a supporting arm 12 is formed on the upper end of the frame 11 in a downward direction. The support arm 12 is disposed at the center of the frame 11 and may be integrally formed with the frame 11. [ An unexplained reference character H is an example of an H-shaped steel to be cut.

According to the present invention, the turning means 20 causes a change in cutting angle between the main body 10 and the cutter 15 via the movable base 22. The turning means 20 assists the cutting of the circular saw of the cutter 15 at an arbitrary angle not perpendicular to the section steel. The cutter 15 is fixed on the movable base 22 instead of the frame 11 and the movable base 22 is rotatably supported on the frame 11 of the main body 10. [

As a detailed construction of the present invention, the pivoting means 20 is provided with an arc-shaped groove 26 on a movable base 22 mounted on a main body 10 via a hinge 24, And the variation of the angle of the movable base (22) is controlled by using the tightening bolt (28). The movable base 22 is pivoted about the hinge 24 on the frame 11 and is provided with an arcuate groove 26 and a tightening bolt 28 coaxially with the hinge 24. The tightening bolt (28) is fixed to the frame (11) so as to be slidable on the arcuate groove (26). Thus, when the worker unfastens the tightening bolt 28 and adjusts the angle of the movable base 22 and tightens the tightening bolt 28, the cutting angle of the section steel can be kept tilted.

In addition, according to the present invention, the fixing means (30) is a structure for realizing attachment and detachment of a section steel by connecting the vise (32) mounted on the main body (10) and the magnetic force member. The fixing means (30) clamps the body (10) and the turning means (20) to the section steel to maintain the cutting posture. The vise 32 is helically engaged with the support arm 12 of the main body 10 and interrupts the pressurization of the section steel as the lever is turned. The magnetic force member applies a magnetic force to the magnetic steel member in the clamping / unclamping process of the vise 32 to generate an adhesive force.

The clamping / unclamping using the vise 32 is shown in Fig. 2, and the cutting operation using the cutter 15 after clamping is shown in Fig.

As a detailed configuration of the present invention, the fixing means (30) is characterized in that the permanent magnet (34) and the ball plunger (35) are used as a magnetic force member or the magnet switch (37) . The permanent magnet 34 and the ball plunger 35 are used as the first embodiment of the magnetic force member and the mag switch 37 is used as the second embodiment of the magnetic force member.

As a first embodiment, a permanent magnet 34 and a ball plunger 35 are provided on a lower portion of the frame 11 which is spaced apart from the vise 32. The ball plunger 35 has a structure in which a ball supported by the spring is partially exposed as a tip. The ball of the ball plunger 35 is retracted and the attachment force of the permanent magnet 34 is increased and when the unclamping is performed by unscrewing the vise 32, The ball of the permanent magnet 34 advances by the coiled force and causes the weakening of the permanent magnet 34. Therefore, it is possible to support the vise 32 and the permanent magnet 34 by the vise 32 and the permanent magnet 34 in the cutting process, and the interference of the permanent magnet 34 is reduced during the subsequent cutting process to ensure smooth movement.

As a second embodiment, a mag switch 37 is provided on the lower side of the frame 11, spaced apart from the vise 32. [ The magnet switch 37 can replace the functions of the permanent magnet 34 and the ball plunger 35 described above. That is, since the magnetic force is turned on / off along the direction of turning the lever (not shown) of the mag switch 37, the ease of continuous cutting operation is ensured.

On the other hand, it is also possible to form a long hole in the support arm 12 and to support the vise 32 in a position-variable manner up and down. Since the clamping position of the C-shaped steel is structurally lowered in comparison with the H-shaped or L-shaped steel, it is preferable to perform the clamping after moving the vise 32 to the lower side of the slot.

As a modification of the present invention, the main body 10 includes a moving roller member 40 provided so as to easily move in a state where it extends over a section steel, a size adjusting member 42 provided so as to display a cutting dimension corresponding to the movement of the section steel, And a control unit. The moving roller member 40 is constituted by rotatably supporting a roller at a portion of the frame 11 which is in contact with the flange end of the section steel. By reducing the moving load of the main body 10 by using the moving roller member 40 during the continuous cutting of the section steel, the productivity can be improved by the convenience of the operation. The dimensional adjustment member 42 is wound around a reel like a tape measure having a scale and forms a bent portion 42a so that the end portion extends over the section steel. The cutting time is shortened by clamping the bending portion 42a while confirming the moving distance to the dimension adjusting member 42 and then clamping the vise 32 with the vise 32 during the continuous cutting of the section steel.

5 and 6, the moving roller member 40 is composed of two spaced rollers, and at least one of the rollers is supported by the adjusting bolt 41 so as to be movable up and down via a separate bracket. Accordingly, when the height difference of the moving roller members 40 on both sides occurs, the cutter 15 can be inclined to realize a cutting angle in another direction with respect to the turning means 20. [ As shown in FIG. 6, the adjustment bolt 41 may be adjusted to horizontally align the frame 11 in a state in which the H-shaped steel H as the object to be cut is inclined.

The fixing means 30 includes a bevel gear 45 accommodated in the casing 44, a knob 46 fixed to the input side of the bevel gear 45, a bevel gear 45 fixed to the input side of the bevel gear 45, A spiral shaft 47 fixed to the output side, and a tilting rod 48 slidably engaged with the spiral shaft 47. 1 and 2, since the lever of the vise 32 maintains the horizontal posture, operation is inconvenient when the flange of the section steel is low. In this case, if the knob 46 is held in a vertical posture as shown in Fig. 4, the convenience of clamping / unclamping is improved.

4, a bevel gear 45 and a spiral shaft 47 are accommodated in a casing 44 coupled to the frame 11, and a torsion bar material 48 is horizontally disposed on one side of the frame 11 And is slidably installed. When the knob 46 connected to the input side bevel gear 45 is turned, the output side bevel gear 45 rotates together with the spiral shaft 47 and the coarse sand material 48 reaches the spiral shaft 47 like a nut of the lead screw Clamping / unclamping by axial movement. It is not necessary to bend the waist much as when the operator operates the vise 32, so that the convenience of the operation can be improved.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

10: main body 11: frame
12: support arm 15: cutter
20: rotation means 22:
24: hinge 26: arched groove
28: fastening bolt 30: fastening means
32: Vice 34: permanent magnet
35: Ball flange 37: Mag switch
40: moving roller member 41: adjusting bolt
42: Dimension adjusting member 44: casing
45: bevel gear 46: knob
47: helical axis 48:

Claims (5)

1. A mechanism for cutting various types of sections based on a portable structure, comprising:
A main body 10 on which a cutter 15 is mounted on a frame 11 having a structure in which one side and the other side are bent to have a different length so as to extend over a projected flange of a section steel;
A rotation means (20) for causing a change in cutting angle between the main body (10) and the cutter (15) via a movable base (22); And
And fixing means (30) for realizing detachment and attachment of the vise (32) mounted on the main body (10) to the section steel in connection with the magnetic force member,
The pivoting means 20 includes an arcuate groove 26 formed on the movable base 22 mounted on the main body 10 through a hinge 24 and a fastening bolt 28 on the arcuate groove 26 Thereby controlling the variation of the angle of the movable base 22,
The fixing means 30 uses the permanent magnets 34 and the ball plungers 35 as magnetic force members to intermittently apply magnetic force,
The main body 10 includes a moving roller member 40 which is installed so as to easily move in a state where the main body 10 is extended over a section steel,
The fixing means 30 includes a bevel gear 45 accommodated in the casing 44, a knob 46 fixed to the input side of the bevel gear 45, a spiral shaft 47 fixed to the output side of the bevel gear 45, , And a tilting rod (48) slidably engaged with the spiral shaft (47)
Wherein the main body (10) is provided with a dimension adjusting member (42) provided so as to display a cutting dimension corresponding to the movement of the steel strip.
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