JPH0580620U - Portable shape steel cutting machine - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a portable shaped steel cutting machine capable of cutting so that a clean cut surface can be obtained without any waste portion at the time of cutting. [Structure] A pedestal frame 10 of a size and weight that can be carried by a person by hand, and a plate-shaped pedestal fixed to the pedestal frame 10 in an upright state and provided with through holes 21 corresponding to the shaped steels 50 on its side surfaces. The blade 20 and a through hole 31 having the same shape as the through hole 21 are formed in the side surface, and the hydraulic cylinder 40 provided in the gantry frame 10 operates to slide the fixed blade side surface in a superposed state to the fixed blade 20. And a movable blade 30 for shearing the shaped steel in cooperation with each other.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a portable shape steel cutting machine that is most suitable for cutting shaped steel such as curtain rails.

[0002]

[Prior Art]

 As a conventional technique of this kind, as shown in FIG. 5, a pair of fixed blades 2 and 2 having a through hole 3 corresponding to a cross section of the carten rail 7 on a side surface thereof are erected on a frame 1. A portable curtain rail cutting device that is provided and can cut the curtain rail 7 penetrating the through hole 3 by holding down the handle 5 of the lever-type movable blade 4 for shearing between the fixed blades 2 and 2. The machine is known.

[0003]

[Problems to be solved by the invention]

 However, in the above-mentioned conventional technique, as shown in FIG. 6, since the shearing portions 8 are provided on both sides of the movable blade 4, a large force P is required accordingly. Furthermore, since the shearing force applied to each shearing portion 8 is half of the force P that pushes the movable blade 4, the shearing portion 8 is easily collapsed and a burr is easily generated. In addition, each time the cutting is performed, the portion corresponding to the excision portion 7a is discarded, resulting in waste of material and increase in dust.

The present invention has been made in view of the above-mentioned problems of the prior art, and an object thereof is to provide a portable shaped steel cutting machine capable of cutting so as to obtain a clean cut surface without generating a waste portion at the time of cutting. To do.

[0005]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, in a portable shape steel cutting machine according to the present invention, a gantry frame having a size and weight that can be carried by a person by hand, and a pedestal frame fixed to the gantry frame in an upright state and formed on a side surface. A plate-shaped fixed blade with a through hole corresponding to steel is drilled, a through hole with the same shape as the through hole is drilled on the side surface, and the hydraulic cylinder provided on the gantry frame operates. And a movable blade that slides on the side surface of the fixed blade in a superposed state and cooperates with the fixed blade to shear the shaped steel.

[0006]

[Action]

 The movable blade slides due to the operation of the hydraulic cylinder, the peripheral edge of the movable blade side through hole meshes with the peripheral edge of the fixed blade side through hole, and shears the shaped steel in the through hole at the overlapping surface position of both blades. Since there is only one shearing part, the force acting on the movable blade acts on the shearing part as it is.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of the present invention, FIG. 1 is a front view of a curtain rail cutting machine which is an embodiment of the present invention, and FIG. 2 is a longitudinal sectional view of the same cutting machine (see FIG. 1). FIG. 3 is a cross-sectional view taken along line II-II), and FIG. 3 is an explanatory view for explaining the effect of this embodiment.

In these drawings, reference numeral 10 is a gate-type mount frame, and rectangular plate-shaped fixed blades 20 and movable blades 30 of the same shape overlap the side surfaces between the left and right columns 11 and 12 of the frame 10. Are arranged. The fixed blade 20 engages with guide grooves 11a and 12a extending to face the columns 11 and 12 and is positioned in the left-right direction, and a holding portion 24 provided below the guide grooves 11a and 12a. And a fixing pin 26 provided on the lower surface of the frame upper frame 13 for positioning and fixing in the vertical direction.

The movable blade 30 is engaged with the guide grooves 11 a and 12 a of the columns 11 and 12 to be positioned in the left-right direction, and is carried by the cylinder rod 42 of the hydraulic cylinder 40 provided on the frame lower frame 14. Has been done. Then, the compression coil springs 44, 44 are interposed between the upper frame 13 of the frame and the movable blade 30 to position the movable blade 30 in the vertical direction, and the movable blade 30 moves up and down as the cylinder 40 moves up and down. ..

The fixed blade 20 and the movable blade 30 are provided with through holes 21 and 31 which are aligned with the transverse surface of the curtain rail 50 to be cut, and as shown in FIG. The curtain rail 50 can be arranged so as to penetrate through 31. As the movable blade 30 rises, the movable blade-side hole peripheral edge portion 31a forming the cutting blade meshes with the fixed blade-side hole peripheral edge portion 21a that also forms the cutting blade, and the curtain rail 50 moves toward the blade edges 20 and 30. Shear at the polymerization surface position. The cross-sections of the through holes 21 and 31 are inclined with respect to the X-Y axis so that the stroke until the engagement of the peripheral portions 21a and 31a of both holes, that is, the upward stroke of the movable blade 30 may be small. It is arranged. That is, as shown in FIG. 4, when the through-holes 21 and 31 are formed symmetrically with respect to the fixed blade 20 (movable blade 30), the shearing stroke of the movable blade 30 is L ₂ , but in the present embodiment, When the through holes 21 and 31 are formed to be inclined as in the example, the shear stroke may be small as shown by reference numeral L ₂ in FIG. 1, and the vertical height of the supporting frame, that is, the cutting machine can be reduced accordingly. Reference numeral 46 is a portable hydraulic pump, which is connected to the hydraulic cylinder 40 by a hose 48. Further, the fixed blade 20 and the movable blade 30 are provided with through holes 61 and 71 respectively corresponding to other curtain rails having different cross-sectional shapes, so that they can be used for cutting three kinds of curtain rails. Has become.

Further, the upper frame 13 is screwed to the columns 11 and 12, and the upper frame 13 can be easily separated by removing the fastening screw (not shown). Then, the fixed blade 20 and the movable blade 30 can be extracted upward from between the columns 11 and 12, and the blades 20 and 30 can be easily replaced. In other words, prepare various types of cutting blades (fixed blades and movable blades) that have pre-drilled through holes according to the cross-sectional shapes of various curtain rails, and prepare the cross-sectional shape of the curtain rail to be cut. By attaching cutting blades (fixed blades and movable blades) having matching through-holes to the support frame 10, they can be used for cutting curtain rails of various shapes.

Although the above-described embodiments have been described with respect to the cutting of the curtain rail, the present invention can be similarly applied to the case of cutting a shaped steel having a relatively thin plate thickness other than the cutting of the curtain rail.

[0013]

[Effect of the device]

 As is clear from the above description, according to the portable shape steel cutting machine of the present invention, the peripheral edge of the movable blade side through hole meshes with the peripheral edge of the fixed blade side through hole by the operation of the hydraulic cylinder. Since the shaped steel in the hole is sheared at the overlapping surface position of both blades, the shaped steel can be easily cut. Also, since there is only one shearing part and the force acting on the movable blade acts on the shearing part as it is, the cutting surface is clean. The cutting machine is lightweight and easy to carry, making it convenient to use wherever you want.

[Brief description of drawings]

FIG. 1 is a front view of a curtain rail cutting machine according to an embodiment of the present invention.

FIG. 2 is a vertical sectional view of the cutting machine (a sectional view taken along line II-II shown in FIG. 1).

FIG. 3 is an explanatory view explaining the operation of the cutting machine.

FIG. 4 is an explanatory view for explaining a cutting stroke of the same cutting machine.

FIG. 5 is a perspective view of a conventional curtain rail cutting machine.

FIG. 6 is an explanatory view for explaining the operation of the cutting machine.

[Explanation of symbols]

 10 Stand Frame 20 Fixed Blade 30 Movable Blade 40 Hydraulic Cylinder 21, 31 Through Hole 21a, 31a Aligning with Cross Section of Curtain Rail Peripheral Edge of Through Hole Forming Cutting Blade

Claims (1)

[Scope of utility model registration request] 1. A plate-shaped fixed blade having a size and weight that can be carried by a person by hand, and a plate-shaped fixed blade fixed to the frame in a standing state and having a through hole corresponding to a shaped steel formed in a side surface thereof. And a through hole having the same shape as the through hole is formed on the side surface, and the hydraulic cylinder provided on the gantry frame operates to slide on the fixed blade side surface in a superimposed state to cooperate with the fixed blade. A portable shaped steel cutting machine comprising: a movable blade that shears the shaped steel.