JP3008905U - Metal profile cutting machine - Google Patents

Abstract

(57) [Abstract] [Purpose] When cutting the movable die by driving the movable die by inserting the shaped material into the grooved holes of the fixed die and the movable die, the shape is cut at a plane perpendicular to the axis of the movable die. . [Structure] One die 16 of the two dies 16 and 18 provided with groove-shaped holes 17 and 19 of the same shape as the shape member is fixed, and the other die 18 is driven by a piston member 22. A pressing member 32 that comes into contact with the outer surface of the shape member on the piston member 22 side.
Was installed in front of the fixed die 16 side, and the inclination due to the jump when the movable die 18 was driven was eliminated.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hand-held portable cutting machine for cutting a metal profile.

[0002]

[Prior art]

 For example, when building an indoor electrical wiring circuit, raceways or ducts that comply with the technical standards for electrical equipment are used to attach electric wires and lighting equipment.

These raceways or ducts are metal profiles having a U-shaped cross section and are usually cut into a predetermined length at a construction site.

As a hand-held portable cutting machine for that purpose, the cutting end of the profile is not deformed or crushed by the shearing force applied by the cutting blade at the time of cutting, and therefore the cutting blade is also damaged. In order to prevent this, the two dies with grooved holes of the same shape as the profile are placed in a stack, and the profile is inserted through these grooved holes so that the cut points match the mating surface. A cutting machine having a structure in which a die is fixed and the other die is driven by fluid pressure, electric force, or human power so that the groove-shaped holes are bitten each other to cut the die is widely used.

Since such a die with a grooved hole is described in detail in an embodiment of the present invention to be described later, a more detailed description thereof will be omitted here. Even if the edge of the grooved hole on the mating surface that acts as a cutting blade is worn, the dies can be replaced and the opposite surface can be used economically without creating burrs on the cross section. By preparing several types of grooved holes according to the shape, it is possible to cut shapes with different sizes and shapes with one cutting machine.

However, the groove-shaped hole is formed slightly larger than the profile because the operator manually inserts the profile after aligning the positions of the two dies. Therefore, the shape member is loosely inserted and held by the two dies in a state with play, and when the movable die is driven to cause the groove-shaped hole to be misaligned with the fixed die, the play is not achieved. This causes the inconvenience that the profile is tilted by that much and is cut diagonally, resulting in poor connection to the box or attachment of the end cap.

[0007]

[Problems to be solved by the device]

 The problem to be solved by the present invention is to arrange two dies having grooved holes of the same shape as the shape member in a stacked manner, fix one die, and place the other die along their mating surfaces. The point is that it is easy to cut diagonally with a cutting machine that has a structure in which the corners of the mating side edges of the grooved holes are used as cutting blades to cut the profile by driving.

[0008]

[Means for Solving the Problems]

 SUMMARY OF THE INVENTION It is an object of the present invention to solve the above problems and to provide a cutting machine that can cut a profile at a right angle without tilting even if the profile is loosely inserted into the groove. Another object of the present invention is to provide a cutting machine that can drive a movable die stably in addition to the above, and can be attached to and detached from an existing reciprocating drive motor.

That is, according to the present invention, therefore, one of the two dies is fixed and the other one is linearly reciprocally movable. The piston member which contacts the outer peripheral surface of the movable die and transmits the motive force is linearly reciprocally moved to the housing. The holding member, which is held as much as possible, and which contacts the outer surface of the profile on the piston member side, is installed in the housing in front of the fixed die side.

In the above-mentioned means, the pressing member is positionally adjustable in the driving direction of the movable die and in a direction perpendicular to the driving direction, or the piston member in contact with one outer peripheral surface of the thin and thin movable die is used. It is preferable that at least the tip portion has a flat shape that extends in the longitudinal direction of the outer peripheral surface, or that the outer peripheral surface of the housing on the piston member side is provided with a coupling mechanism that is attachable to and detachable from the reciprocating drive motor.

[0011]

[Action]

 The grooved holes of the two dies are aligned with each other, the profile is inserted, the cut points are aligned with their mating surfaces, and the pressing member is brought into contact with the part of the profile protruding from the fixed die. Next, the movable die is driven to cause the groove-shaped holes of the two dies to intersect with each other, whereby the profile is cut.

At that time, the shape member is pushed by the movable die and tends to incline by the amount of backlash with the groove-like hole of the fixed die, but this inclination is stopped by the pressing member, so that the shape member is prevented from moving along its axis. It will be cut at a right angle.

[0013]

【Example】

 Referring to the drawings, an embodiment of the present invention will be described. The housing 1 is composed of a frame 2 and side plates 11 and 13 arranged on both sides of the frame 2, which are rectangular plates and are connected to each other by a through bolt 40. It is tightened and solidified in the overlapped state.

The frame 2 has a rectangular hollow portion penetrating in the front-rear direction, and one half thereof in the thickness direction forms a fixed die accommodating portion 3 into which a fixed die 16 described later is fitted without a gap, and the remaining One half forms a movable die housing 4 in which a movable die 18 described later is fitted so as to be capable of linearly reciprocating, and the return side outer surface of the movable die 18 has two mounting flanges 5 at the front and rear in the thickness direction. , 7 are provided, and through holes 6 and 8 for mounting bolts are provided on both sides thereof. The flanges 5 and 7 and the through holes 6 and 8 form a connecting mechanism 15. Further, a guide groove 9 of a piston member 22, which will be described later, is provided so as to communicate with the movable die accommodating portion 4 so as to divide one mounting flange 7 into two, and a grip 10 for transportation is mounted on an outer surface at a right angle to this. Has been.

The side plates 11 and 13 have the same size as the frame 2 and have window holes 12 and 14 slightly smaller than the two dies 16 and 18.

The fixed die 16 and the movable die 18 are formed in a thin rectangular shape having the same size so that they can be used interchangeably, and they have the same shape as the profile to be cut and are loosely inserted therethrough. It has groove-like holes 17 and 19, and the overlapping thickness thereof is equal to the thickness of the frame 2 so that it is fitted in the respective accommodating portions 3 and 4 so as not to protrude by the side plates 11 and 13. ing.

The tip end surface of the piston member 22 fitted in the guide groove 9 so as to be linearly reciprocable comes into contact with one outer peripheral surface of the movable die 18, and the outer peripheral surface on the opposite side is accommodated in the housing portion 4. The return spring 21, which is a mounted compression coil spring, is in contact.

The piston member 22 has a disk-shaped load receiving portion 23 at its base, and a plate-shaped pressing portion 24 having a width equal to the thickness of the movable die 18 and a length equal to the diameter of the load receiving portion 23. On the tip side, and is arranged on the center bisector of the movable die 18. Further, a retaining pin 25 is provided on one side surface of the tip portion of the pressing portion 24 so as to be fitted into a regulating groove 26 formed in the side plate 11 on the movable die 18 side so that the piston member 22 does not come out of the guide groove 9. Is being done.

Next, a bracket 28 is provided so as to project along the peripheral edge of the side plate 13 on the fixed die 16 side where the piston member 22 is installed, and a pressing member 32 is attached to the tip thereof. That is, the bracket 28 is T-shaped, and has a slot 29 in the base portion which is overlapped with the side plate 13, and the movable die 18 of the movable die 18 is screwed into the side plate 11 from the slot 29 through the side plate 13 and the frame 2. It is fixed at a position adjustable in the direction perpendicular to the driving direction.

Further, a support shaft 33 formed of a screw rod penetrates the tip of the bracket 28, and is fixed to the movable die 18 in a drive direction adjustable position by nuts 34, 34 screwed to sandwich the bracket 28. ing. An L-shaped pressing member 32 that is in contact with two sides of the shape member is fixed to the tip of the support shaft 33.

The cutting machine according to the present embodiment is placed on the floor at the site and performs the cutting work with the reciprocating drive motor facing downward. At this time, the mounting flange 5 of the housing 1 is provided in order to keep the machine upright in a stable manner. , 7 have trapezoidal leg pieces 38, 38 attached to the side plates 11, 13 by screwing them to the outer side.

This embodiment having such a structure is preferably a piston tip of a crimping / compressor using electric fluid pressure as described in JP-A-2-104498 and JP-A-2-130769. It is used as a reciprocating drive prime mover by removing the movable die coupled to and the fixed die in front of it. That is, by fitting the bracket 51 in which the fixed die is attached to the front of the cylinder so as to cross the attachment flanges 5 and 7, and inserting and tightening the connecting bolt 42 into the shaft hole 52 and the through holes 6 and 8. The piston 53 and the piston member 22 can be handled as one body and arranged on the same central axis.

Then, the housing 1 is placed upright on the floor surface, and the groove hole 17 of the fixed die 16 and the groove hole 19 of the movable die 18 placed at the return position by the return spring 21 are aligned. The shape member 71 is inserted into these to match the mating surfaces of the two dies 16 and 18, and the pressing member 32 is pressed with the shape member 71 being pressed against the lower surface of the groove-shaped holes 17 and 19. The shape member 71 is brought into contact with the upper surface.

Next, the piston 53 of the reciprocating drive motor is moved forward to press the piston member 22 to drive the movable die 18 to cause the two groove-shaped holes 17 and 19 to be eclipsed by each other. The edge corners of the work as cutting blades and cut the profile 71.

At this time, the portion of the shape member 71 on the side of the fixed die 16 pushed by the movable die 18 is repelled by the reaction force and tends to incline by the amount of backlash with the groove-shaped hole 17. However, since the holding member 32 arranged on the tilt side restrains this tilt, the profile 71 is cut on a plane perpendicular to the axis. When the piston 53 is retracted after the cutting is completed, the movable die 18 and the piston member 22 return to the position where the two groove-shaped holes 17 and 19 are aligned by the spring force of the return spring 21.

In the present embodiment, in order to reduce especially the initial load at the time of cutting, the shape member 71 is slanted so as to be inserted and held in the two dies 16 and 18, and therefore the pressing member 32 is formed into an L shape. However, depending on the shape and the holding posture of the shape member 71, it may be a flat plate shape that presses only one side surface.

When exchanging the dies 16 and 18 with another one and cutting a profile having a different size or shape, the mounting bolt 41 is loosened, the bracket 28 is moved according to the slot 29, or the nuts 34 and 34 are used. By loosening and moving the support shaft 33, the position of the pressing member 32 can be adjusted, the shape member can be appropriately pressed and cut on a plane perpendicular to the axis line.

Further, the piston member 22 for driving the thin rectangular movable die 18 comes into contact with the tip end surface of the piston 53 over a wide area by the load receiving portion 23 having a diameter larger than the thickness of the movable die 18, so that power is transmitted stably. At the same time, the flat pressing portion 24 allows the movable die 18 to exert a load evenly on the movable die 18 for smooth driving.

Furthermore, since the two dies 16 and 18 having the same size are used in the present embodiment, when the edge corner portions of the groove-shaped holes 17 and 19 which serve as cutting blades are worn, they are replaced and the opposite surface is replaced. It can be used economically by facing each other.

[0030]

[Effect of device]

 As can be understood from the above, according to the present invention, when the movable die is driven, the reaction force causes the portion of the shape member on the fixed die side to be flipped up, and the phenomenon of tilting by the amount of the play with the groove-like hole is caused. It is stopped by a holding member installed in front of the fixed die side of the housing, and the profile can be cut while maintaining a straight line state to obtain a cut surface perpendicular to the profile axis. Therefore, when it is used to cut a raceway or a duct of an indoor electric wiring circuit, it can be properly connected to a box or the like and an end cap can be attached. In addition, since it cuts at a right angle in a fixed state without backlash, the corners of the grooved holes that act as cutting blades are less likely to wear, and can withstand multiple cutting operations.

When the position of the pressing member is adjustable, it can be properly pressed in correspondence with shapes having different sizes and shapes, and when the piston member is flat, the movable die is contacted with a wide range of load. It can be operated smoothly without biasing, and if a detachable connecting mechanism to the forward / backward drive prime mover is provided, the existing compression / crimping machine can be used and the range of use is widened. There is an advantage.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional view showing an embodiment of the present invention.

FIG. 3 is a sectional view taken along line XX of FIG.

FIG. 4 is a left side view of FIG.

[Explanation of symbols]

1 housing, 15 connecting mechanism, 16 fixed die, 17, 19 grooved hole, 18 movable die, 2
2 piston members, 32 pressing members.

Claims (4)

[Scope of utility model registration request] 1. A die having two grooved holes of the same shape as the shape member is fixedly mounted on one side and is reciprocally movable on the other side. A piston member, which is in contact with the peripheral surface and transmits motive force, is linearly reciprocally held in the housing.
In addition, a pressing member that comes into contact with the outer surface of the shape member on the side of the piston member is positioned in front of the fixed die side and installed in the housing, and the cutting machine for metal shape members. 2. The machine for cutting a metal profile according to claim 1, wherein the pressing member is positionally adjustable in the driving direction of the movable die and in a direction perpendicular to the driving direction. 3. The die has a thin and thin shape, and at least the tip portion of the piston member that contacts one outer peripheral surface of the movable die has a flat shape extending in the outer peripheral surface longitudinal direction. A cutting machine for metal profile described above. 4. The metal shape member according to claim 1, wherein a connecting mechanism that is detachable from the reciprocating drive motor is provided on the outer surface of the housing on the side where the piston member is arranged. Cutting machine.