JP2769297B2 - Bar cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bar cutting apparatus for cutting a metal bar such as a reinforcing bar used for reinforced concrete construction or a resin bar made of vinyl chloride resin or the like.

[0002]

2. Description of the Related Art For example, a steel pipe provided in a predetermined shape when reinforced concrete is constructed, and a resin pipe such as a vinyl chloride resin used for a water pipe or the like are provided in a fixed shape which is easy to handle in production or transportation. It is generally used after being cut to a required length at a construction site.

For example, when the length of reinforced concrete to be constructed is equal to or longer than the entire length of the reinforcing bar, the reinforcing bar is connected to the axial direction and used to extend to a required length. It is common that cutting is involved. Usually, since a plurality of reinforcing bars are arranged adjacent to each other, it is necessary to make the connecting positions different from each other in the longitudinal direction in order to secure the strength and reliability of the reinforced concrete. Further, such as gas pressure welding in which the end faces of the rebar are heated with gas while pressing the end faces with a predetermined force, and CB welding in which the end faces are held at a predetermined distance from each other, heated and a welding material is poured between the end faces. When the connection method is adopted, in order to ensure the strength and reliability of the connection portion, both end surfaces of the reinforcing bar to be connected must be perpendicular and flat to the axial direction thereof, and the oxide has been removed. Therefore, cutting is required.

[0004]

In cutting a bar such as a reinforcing bar as described above, for example, a method described in Japanese Utility Model Application No. Hei 6-13382 (not disclosed) filed by the applicant of the present invention has been described. A bar gripper for gripping a bar, and having an outer peripheral blade, around a rotation axis parallel to the axial direction to cut the bar gripped by the bar gripper. A bar cutting device including a cutting machine having a disk-shaped rotary cutting tool driven to rotate is used. However, the above-mentioned bar material cutting device includes a cutting machine equipped with a disc-shaped rotary cutting tool,
The cutting was performed by rotating around a predetermined rotation axis parallel to the axial direction of the bar. Therefore, when the above-mentioned bar material cutting device is applied to cut a bar material such as a rebar which has been installed, the interval between the bar materials such as the rebar is increased so as to secure a sufficient rotation angle of the cutting machine. Therefore, there is a problem that the method cannot be applied to cutting bars, such as reinforcing bars, which are arranged relatively densely. Such a problem can also occur in the case of cutting a resin pipe provided underground in a water supply work or the like.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the purpose of using a rod material such as a reinforcing rod or a resin pipe even when the rod material is relatively densely arranged. It is an object of the present invention to provide a bar cutting device capable of cutting.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the gist of the present invention is to provide a bar gripper for gripping a bar, an outer peripheral blade, and a gripper provided by the bar gripper. And a longitudinal cutting machine having at one end a disk-shaped rotary cutting tool that is driven to rotate about a rotation axis parallel to the axial direction to cut the cut bar. (A) provided between the bar gripper and the cutting machine, the cutting machine so that the disk-shaped rotary cutting tool provided at one end of the cutting machine approaches the bar. Including a tool guide device that guides linearly along its longitudinal direction,
(b) the bar gripping machine, (b-1) extending in the axial direction of the rod the rod for Ru receiving each <br/> and mutual intersection line pixels
Preparative receiving portion comprising a pair of receiving surfaces that match with the axial direction and a main body having at one end, to the body comprise (b-2) pressing surfaces
Ri attached is, exchange of the receiving surface thereof a pair by rotating operation
Receiving surface thereof a pair by Rukoto is pressed toward the line
And a pressing member for fixing by gripping the rod between its pressing surface, is to have.

[0007]

In this manner, the bar cutting device is provided between the bar gripper and the cutting machine, and has a disk-shaped rotary cutting tool provided at one end of the cutting machine. Includes a tool guide device that guides the cutting machine along its length in a straight line so as to approach the bar, and the bar gripper has an axial center of the bar for receiving the bar respectively. Growth
A body mutual intersection line has at one end a receiving portion comprising a pair of receiving surfaces that match the axial One, its includes a pressing surface
Attached to the body, its these pair of receiving by Rukoto is pressed toward those pair of receiving surfaces by the rotation operation
Only the surface and configured to have a pressing member for fixing by gripping the rod between its pressing surface. Therefore, when cutting the bar, the disk-shaped rotary cutting tool is directed straight in a direction approaching the bar gripped by the bar gripper. Therefore, there is no need to secure the turning angle of the cutting machine as in the conventional bar cutting device,
It is also possible to cut rods such as steel bars and resin pipes which are relatively densely erected. Moreover, since the bar is extended in the axial direction and the line of intersection is aligned with the axial direction, the rod is fixed with a narrow pressure between the pair of receiving surfaces and the pressing surface . Even when the bar is erected, the bar gripper is attached to the bar with the longitudinal direction of the receiving portion coinciding with the axial direction of the bar. Therefore, the disk-shaped rotary cutting tool that is moved relative to the bar gripping machine so as to linearly move toward the bar, the rotation axis thereof coincides with the axis direction of the bar and is aligned with the axis thereof. Since the rod is rotated in a vertical plane, the bar can be cut so that its cut end face is vertical and flat in the axial direction.

[0008] The tool guide device is, for example, as shown in (b)
A longitudinal guide member provided in the bar gripper, (c)
A moving member provided in the cutting machine and engaged with the guide member so as to be relatively moved only in the longitudinal direction of the guide member.

Here, another embodiment of the bar cutting device will be described. Preferably, in the bar holding machine ,
The part is provided at one end of the main body so as to protrude in a hook shape,
Serial Monodea at least a portion of a pair of receiving surfaces that are not positioned on the opposite side to the disc-shaped rotary cutting tool side of the bar
Ri, the pressing portion, the pressing surface is of even Ru allowed to position on the disc-shaped rotary cutting tool side of the bar.

In this way, in the bar gripper ,
The receiving unit, at least a portion of the pair of receiving surfaces provided to project in a hook shape at one end of said body is caused to opposite to the disk-shaped rotary cutting tool side of the bar Monodea
Ri, the pressing portion is to the pressing surface is brought into position in the disk-shaped rotary cutting tool side of the bar. Therefore, when cutting the bar, at least a part of the receiving surface of the receiving portion provided in a hook shape at one end of the main body is passed through the side of the bar and is opposed to the disk-shaped rotary cutting tool side. The bar is gripped by pressing the bar from the disc-shaped rotary cutting tool side toward the receiving surface with the pressing member in a state where the bar is positioned on the side. Therefore, compared with the case where the bar is gripped from the side by the receiving portion and the pressing member, even when the bar such as a reinforcing bar or a resin pipe is relatively densely arranged, the bar can be easily removed. It can be gripped and cut.

Further , another invention for achieving the above object.
The point of the point is, a bar gripper for gripping a bar,
The bar having an outer peripheral blade and gripped by the bar gripper
Around the axis of rotation parallel to the axis direction to cut the material
Longitudinal with a disk-shaped rotary cutting tool driven at one end
A bar cutting device, comprising:
A cutting machine provided between the bar gripper and the cutting machine;
The disk-shaped rotary cutting tool provided at one end of the
Straighten the cutter along its length to approach
A tool guide device for linearly guiding is provided, and the bar gripper is provided so as to protrude in a hook shape at one end of the bar gripper.
At least part of the receiving surface for receiving the bar is the circle of the bar
Receiving part located on the opposite side to the plate-shaped rotary cutting tool side
(C) the disk-shaped rotary cutting of the bar material
The bar is provided with a pressing surface positioned on the
By pressing against the receiving surface of the receiving part
A pressing member supported rotatably to the first pivot axis about parallel to the axial direction of the rod to the body in order to grip the bar between, (d) is elongated A first rotation member provided on the main body so as to be rotatable around a second rotation axis provided at one end side in parallel with the first rotation axis;
(e) connected at one end to the pressing member so as to be relatively rotatable around a third rotation axis parallel to the first rotation axis, and at the other end, other than the first rotation member. An end is connected so as to be relatively rotatable about a fourth rotation axis parallel to the first rotation axis, and the second rotation axis, the third rotation axes,
And a fixed position where the fourth pivot axis is located on a straight line and the pressing member grips the bar, and a straight line connecting the second pivot axis and the third pivot axis. a second rotating member to which the pressing member 4 and pivot axis is removed is rotated between a release position not gripping the bar, include
In .

With this configuration, the bar cutting device includes the bar
Between the material gripper and the cutting machine at one end of the cutting machine
Linear rotation cutting tool close to the bar
Tool guide for guiding the cutting machine along its length
The device is provided, and the bar gripper is mounted at one end.
The receiving surface of the receiving surface, which is
At least a part of the bar is on the disk-shaped rotary cutting tool side
A body having a receiving portion located on the side opposite to
A pusher positioned on the disk-shaped rotary cutting tool side of the bar material
With a pressure surface, and move the bar toward the receiving surface of the receiving portion.
Holds the bar between the receiving part by pressing
And a pressing member rotatably supported on a main body thereof around a first rotation axis parallel to the axial direction of the bar, and a second member parallel to the first rotation axis at one end. A first rotating member provided on the main body so as to be rotatable around the dynamic axis, and a pressing member and a first rotating member which are relatively rotatable around third and fourth rotating axes, respectively; And a second rotating member to be connected. The second rotating member is connected to the second, third and third rotating members.
And a fixed position in which the pressing member grips the bar with the three rotation axes of the fourth rotation axis being aligned, and a pressing position in which the three rotation axes are not aligned. The member is operated between a release position where the bar does not grip the bar. That
Therefore, when cutting a bar, a disk-shaped rotary cutting tool
Is approaching the bar gripped by the bar gripper
Conventional straight bar cutting
It is not necessary to secure the turning angle of the cutting machine as in the device.
Bars such as steel bars and resin pipes that are relatively densely arranged
Can also be cut. And at one end of the body
At least the receiving surface of the provided receiving part that protrudes like a hook
A part of the rod-shaped rotary cutting tool through the side of the bar.
Is located on the opposite side, and the rod is
Material from the disk-shaped rotary cutting tool side toward its receiving surface.
The bar is gripped by pressing,
When the bar is gripped from the side by the stopper and the pressing member
Bars such as steel bars and resin pipes are relatively denser
Even if it is arranged, the bar can be easily gripped.
You. Furthermore, at the fixed position of the second rotation member, the three rotation axes are located on a straight line, so that the reaction force received by the pressing member from the rod material is the first rotation axis of the pressing member. And the second rotation axis of the first rotation member does not act as a force for rotating the first rotation member and the second rotation member. Therefore, it is possible to reliably hold the bar by a simple operation.

[0013] Still another object of the present invention is to achieve the above object.
The gist of the invention is a bar gripper for gripping a bar.
Having an outer peripheral blade, and the bar gripped by the bar gripper.
Rotation axis parallel to the axis direction to cut the bar
At one end has a disk-shaped rotary cutting tool that is driven to rotate
A bar cutting device comprising a longitudinal cutting machine, and (a)
The cutting device is provided between the bar gripper and the cutting machine, and the axis of the bar gripped by the bar gripper is the cutting machine.
The disk-shaped rotary cutting tool is positioned at a position closer to the rotation direction of the disk-shaped rotary cutting tool than the extension of the movement locus of the center of rotation of the disk-shaped rotary cutting tool provided at one end of the disk-shaped rotary cutting tool.
The cutting machine in its longitudinal direction so as to approach the bar
Equipped with a tool guide device that guides linearly along
It is in.

In this way, the bar cutting device includes
Between the bar gripper and cutting machine by the bar gripper
Disk with the axis of the cut bar provided at one end of the cutting machine
With its disk positioned in the direction of rotation of the rotary cutting tool
The cutting machine is set so that the rotary cutting tool approaches the bar.
A tool guide device that guides linearly along the longitudinal direction
Be provided. Therefore, when cutting the bar,
The plate-shaped rotary cutting tool was gripped by the bar gripper
Being able to be directed straight in the direction approaching the bar
From the angle of rotation of the cutting machine as in the conventional bar cutting device.
No need to secure, relatively densely laid rebar
It is also possible to cut rods such as and resin pipes,
At this time, the bar is cut with its axis shifted in the rotation direction with respect to the rotation center of the disk-shaped rotary cutting tool.
Therefore , when the outer peripheral blade of the disk-shaped rotary cutting tool is brought into contact with the bar at the time of cutting, a force is generated in a direction to bring the disk-shaped rotary cutting tool closer to the bar side, and the disk is cut at the time of cutting. The force required to guide the rotary cutting tool in the direction approaching the bar according to the tool guiding device is reduced, and the cutting process can be performed more easily.

Preferably, the tool guiding device is
(j) a rack gear provided on one of the cutting machine and the bar gripper, and (k) a pinion gear provided on the other of the cutter and the bar gripper and meshed with the rack gear; ) Provided on the pinion gear, and by rotating the pinion gear about a predetermined rotation axis, the cutting machine is linearly moved in a direction approaching the bar material based on the engagement between the pinion gear and the rack gear. And an operation member for moving the object.

With this configuration, the tool guide device is configured such that the rack gear and the pinion gear having the operating member are provided on one and the other of the cutting machine and the bar gripping machine. Therefore, when cutting the bar, the disk-shaped rotary cutting tool is guided by the tool guide device in a direction approaching the bar simply by rotating the operation member about a predetermined rotation axis. Therefore, the rack gear, the pinion gear and the operating member act as a booster, and the movement of the disk-shaped rotary cutting tool is further facilitated,
The cutting of the bar can be performed more easily.

[0017]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 5 are views showing the entirety of a bar cutting apparatus 10 according to an embodiment of the present invention, and are respectively a front view, a plan view, a bottom view, a cross-sectional view taken along line IV-IV in FIG. 2 corresponds to a cross-sectional view taken along line VV in FIG. As shown in FIG. 1, the bar material cutting device 10 is provided with a bar material gripping machine 14 that grips a bar material 12 a such as a reinforcing bar to be cut in a predetermined posture, and the bar material gripping machine 14. The bar material 12 gripped by the disk-shaped rotary cutting tool 16 built in one end.
a and a longitudinal cutting machine 18 for cutting a and the like.

As shown in FIG. 3, the bar gripper 14 has a receiving portion 20 having a longitudinal shape and a hook shape at one end.
A pressing member 28 rotatably attached to a base 24 of the receiving portion 20 of the main body 22 by a bolt 26 around its axis, and one end at an intermediate portion in the longitudinal direction of the pressing member 28. A connecting member 32 which is relatively rotatably attached by a pin 30 at a portion thereof, and a rotatable member which has a longitudinal plate shape and is relatively rotatably attached at one end to the other end of the connecting member 32 by a pin 34. Member 3
6 and an adjusting bolt 40 which is provided at the other end of the main body 22 and stores the other end of the rotating member 36 and is screwed from the other end. . In this embodiment, the turning member 36 serves as a first turning member, the connecting member 32 serves as a second turning member, and the bolt 26
Corresponds to the first rotation axis, the axis of the pin 30 corresponds to the third rotation axis, and the axis of the pin 34 corresponds to the fourth rotation axis.

As shown in FIGS. 3 to 5, the main body 22 is provided with the storage section 38 on one surface of the other end opposite to the cutting machine 18, and has one end of a guide member 42 having a long shape. The receiving portion 20 is fixed to the side surface of the base portion 24 by welding or the like. The pressing member 28, the connecting member 32, the rotating member 36, and the adjusting bolt 40
As is clear from FIG. 5, all are located on the same surface side as one surface on which the storage portion 38 of the guide member 42 is provided.

As shown in FIG. 4, the guide member 42 has a substantially rectangular cross section perpendicular to the longitudinal direction, and the other end portion (housing portion) of one side (upper side in FIG. 3) in the longitudinal direction. In the vicinity of the portion provided with the gear 38, a rack gear 4 meshed with a pinion gear 168 described later is provided.
4 are provided. Further, the other side surface is formed so as to protrude to the side surface by reducing the width from one surface in which the storage portion 38 is provided over the entire length in the longitudinal direction to approximately half the position in the thickness direction. A step 46 is provided. As shown in FIG. 5, the guide member 42 is provided with a bottomed hole 48 having a length extending from the other end surface on the adjusting bolt 40 side to substantially the entire length in the longitudinal direction. The spring 50 is housed, and on one surface opposite to the surface on which the housing portion 38 is provided,
An elongated hole 52 having a length and a width sufficiently shorter than the bottomed hole 48 and communicating with the bottomed hole 48 is provided.

The receiving portion 20 has a receiving surface 54a extending from the base 24 in parallel to the longitudinal direction of the guide member 42 and extending in the thickness direction thereof, that is, in the direction perpendicular to the plane of FIG.
The receiving surface 54a faces the end surface of the guide member 42 in a direction facing the end surface.
And a pair of receiving surfaces 54a and 54b (hereinafter, referred to as a receiving surface 54b) extending vertically from the
If not particularly distinguished, it is simply referred to as a receiving surface 54). That is, the pair of receiving surfaces 54a and 54b are formed such that the intersection line of a plane including each of the receiving surfaces 54a and 54b extends in the thickness direction of the guide member 42.

The pressing member 28 has a plate-like portion 55 attached to the base 24 by the bolt 26 at one end thereof, and a plate-like portion 55 at the other end of the plate-like portion 55 opposite to the bolt 26. Thickness direction, ie, bolt 26
Pressing portion 56 formed in a rectangular parallelepiped shape extending in the axial direction of
And The axial direction of the bolt 26 is parallel to the intersection line. That is, the receiving surface 54 and the pressing portion 56 are provided such that their axial directions are parallel to each other, and the pressing surface 58 and the receiving surface 54 which are one surface of the pressing portion 56 facing the intersection line side are provided. Bar 12a between
Is gripped.

The connecting member 32 has a longitudinal shape and is attached to the pressing member 28 and the connecting member 32 at the one end and the intermediate portion by the pins 30 and 34, respectively. The cross section has a U-shape as shown in FIG. 5, and the middle part of the pressing member 28 and one end of the rotating member 36 are sandwiched from both sides in the thickness direction, and the other end in the longitudinal direction is The pivoting operation lever 60 extending in the longitudinal direction is fixedly mounted. The pivot operation lever 60 is moved between the fixed operation position shown in FIG.
The rotation operation is performed around the vicinity as a rotation center.

Returning to FIG. 3, the adjusting bolt 40 is provided on the end face of the other end of the rotating member 36 opposite to the pin 34.
And a projection 62 is formed at the end of the other end surface on the rack gear 44 side in the width direction toward the adjustment bolt 40. On the other hand, as is clear from FIGS. 4 and 5, the entirety of the storage section 38 on the guide member 42 has a substantially rectangular parallelepiped shape.
A female screw hole 64 into which the adjusting bolt 40 is screwed is provided at an end on the adjusting bolt 40 side, and an intermediate portion in the thickness direction is removed from the end on the connecting member 32 side except for the side surface on the rack gear 44 side. As a result, a storage groove 66 for storing the other end of the rotating member 36 is provided. Therefore, the protrusion 62 of the rotating member 36
Is movable only between the side surface of the storage section 38 on the rack gear 44 side and the tip of the adjustment bolt 40.

An end of the upper surface of the storage portion 38 (the surface opposite to the guide member 42) on the side of the connecting member 32 is provided with a guide member 42 on the side surface of the storage portion 38 on the side of the stepped portion 46. It is formed so as to be separated from the side surface of the storage portion 38 toward the pin 34 in the longitudinal direction of the rotating member 36 so as to limit the amount of movement of the rotating member 36 to the side of the storage portion 38. A supporter 68 having a projection (not shown) is fixed by a bolt 70. The tip of the bolt 70 protrudes into the storage groove 66 of the storage section 38, and is formed by a notch 72 provided on the side surface of the rotating member 36 on the rack gear 44 side and the remaining side surface of the storage section 38. It is located between. For this reason, the rotating member 36
Is a bolt 7 whose other end on the adjustment bolt 40 side fixes the adjustment bolt 40 and the supporter 68.
0, the amount of movement in the longitudinal direction is limited, and the protrusion 62 provided at the other end as described above leaves the tip of the adjustment bolt 40 and the storage portion 38. And the amount of movement in the direction perpendicular to the longitudinal direction is limited.
It is rotatable around the center of the tip surface of the adjustment bolt 40 as the center of rotation without falling off the adjustment bolt 40. That is, in this embodiment, the adjustment bolt 40
The center of the distal end surface of the rotation member 36 corresponds to the second rotation axis.
Is substantially provided on the main body 22.

Further, one end of a tension spring 74 is hung on the bolt 70 fixing the supporter 68,
When the other end of the tension spring 74 is hung on a bolt 76 erected near the pressing portion 56 of the pressing member 28, the pressing surface 58 of the pressing member 28 is moved according to the restoring force of the tension spring 74. , I.e., in the clockwise direction about the bolt 26 in FIG. The receiving surface 54b is formed so as to protrude more toward the cutting machine 18 than the receiving surface 54a as shown in FIG. 1, and the upper end surface of the receiving surface 54b on the cutting machine 18 side is a disk-shaped rotary cut. The figure shows the cutting position of the gripped bar 12a corresponding to the lower surface position of the tool 16.
In FIG. 1 and FIG. 3, reference numeral 78 designates a portion which is attached to an intermediate portion of the adjusting bolt 40 in order to directly read the amount of screwing of the adjusting bolt 40, so that the amount of screwing of the adjusting bolt 40 is changed and the axis of The pointing member is moved in the direction.

On the other hand, as shown in FIGS. 1 to 3, the cutting machine 18 has a motor 84 having a power cord 80 and a switch 82 and also serving as a grip portion, and is attached to the motor 84 to drive the motor 84. And a housing 86 made of, for example, a light alloy (for example, an aluminum alloy or an aluminum die-cast) for accommodating the disk-shaped rotary cutting tool 16 rotated by the above. As shown in FIG. 2, the outer peripheral blade of the disk-shaped rotary cutting tool 16 is formed of a tip made of, for example, a cemented carbide, which is fixed to the rear side in the rotation direction at a predetermined interval.

FIGS. 1 and 3 show the housing 86.
As shown in FIG. 7, a cover 88 formed of the same light alloy as the housing 86 and covering the disk-shaped rotary cutting tool 16 on one surface of the bar gripper 14 has two screws 90,
As shown in FIGS. 1 and 2, a bearing case 92 is mounted on one surface opposite to the cover 88 by four bolts 94. As shown in FIG. 2, each of the housing 86 and the cover 88 has a receiving portion 20 of the bar gripper 14.
And a pressing member 28, a part of the bar 12a side
A letter-shaped notch 98 is provided, and the disk-shaped rotary cutting tool 16 is partially exposed. The knob 96 provided on the housing 86 is operated to stop the rotation when exchanging the disk-shaped rotary cutting tool 16 or the like.

The inside of the housing 86 has the structure shown in the sectional view of FIG. Output shaft 1 of motor 84
02, a helical gear 104 is attached. The helical gear 104 is a helical gear 1 attached to one end of a transmission shaft 106 provided in parallel with the output shaft 102.
08. The transmission shaft 106 is supported by a total of three bearings 110 inserted into the shaft portion, one at the one end and the other at the other end, and has a bevel gear at the other end. .

In front of the bevel gear of the transmission shaft 106,
A rotating shaft 114 supported by a pair of bearings 112, 112 is provided perpendicular to the transmission shaft 106, and a bevel gear 116 meshed with the bevel gear of the transmission shaft 106 is mounted on the shaft portion. Have been. On the outer peripheral surface of the bevel gear 116, there are provided about two to four bottomed holes 118 extending in the axial direction of the rotating shaft 114. The bottomed hole 118 is fitted with a rotation stop pin 122 fixed to the knob 96, and the rotation stop pin 122 is provided with a spring 124 provided between the housing 86 and the knob 96. It is always located apart from the outer peripheral surface of the bevel gear 116 by the force.

A cylindrical cutter flange 126 having a large-diameter portion is fitted and attached to the tip of the rotary shaft 114 until it comes into contact with the bearing 112 located on the upper side in FIG. Cutter flange 1
The disk-shaped rotary cutting tool 16 is attached to one surface of the plate 26 opposite to the upper bearing 112 by being clamped by a disk-shaped flange 128 having a through hole in the center. The screw is screwed to the rotating shaft 114. The cutter flange 12
6, one pin 132 is press-fitted, and the one pin 1 is inserted into the disc-shaped rotary cutting tool 16 and the flange 128.
By inserting the pin 132 into the through hole provided corresponding to the hole 32, the relative rotation between the disk-shaped rotary cutting tool 16 and the cutter flange 126 is prevented.

The three bearings 110 fitted to the transmission shaft 106 are fixed by cylindrical spacers 134 and 136, a collar 138, and a flat bar 142 which is fastened and fixed by a bolt 140 to fix the collar 138. The spacing and position of each other is kept constant.
The rotation of the rotary shaft 114, the cutter flange 126, the bevel gear 116, and the transmission shaft 106 and the helical gear 108 are prevented from rotating relative to each other by keys (not shown).

As shown in FIGS. 1 and 4, on one surface of the cover 88 opposite to the housing 86, an adjust bolt 40 in the longitudinal direction of the guide member 42 of the bar gripper 14 is provided from the center thereof. And a pair of guide walls 144 extending toward the bar gripper 14 so as to cover the rack gear 44 and the stepped portion 46 on both sides thereof.
146 are provided. These pair of guide walls 14
4, 146, one of the guide wall portions 144 located on the side of the stepped portion 46 has an upper end formed by the stepped portion 4 of the guide member 42.
6 is relatively low so as to be substantially at the same position as one surface of the storage portion 38 side, but the other guide wall portion 146 has its upper end in the thickness direction of the guide member 42 excluding the storage portion 38. Is formed relatively high so as to be substantially at the same position as the upper end of the.

The upper end surfaces of the guide walls 144 and 146 are shown in plan view in FIG. 3 and in cross section in FIG.
A pair of back plates 148 and 150 similar to that of No. 6 are fixed by a plurality of bolts 152, respectively. One back plate 148 fixed to the guide wall 144 has a width slightly larger than the width of the upper end surface of the guide wall 144 so that it protrudes from the upper end to the guide wall 146 side. Installed. As shown in FIG. 3, the other back plate 150 has a protruding portion 154 formed at a middle portion in the longitudinal direction so as to protrude to the opposite side to the back plate 148, but other portions are the back plate 148. And is mounted so as to protrude from the guide wall portion 146 toward the guide wall portion 144 by the same width direction size as the back plate 148.

That is, the guide walls 144 and 146 and the back plates 148 and 150 are provided so as to be in close contact with the outer peripheral surface of the guide member 42 of the bar gripper 14, whereby the guide walls 144 are provided. The guide member 42 and the like are immovable relative to each other in a direction perpendicular to the longitudinal direction.
That is, the disk-shaped rotary cutting tool 16 is configured to move the bar 1 in the longitudinal direction of the guide member 42, that is, the bar 1 gripped by the bar gripper 14.
2a only in a direction that approaches or separates linearly (ie, along the longitudinal direction of the cutting machine 18).
And are relatively movable. In the present embodiment, a moving member is constituted by the guide walls 144, 146 and the back plates 148, 150, and the tool guide device constituted by the moving member and the guide member 42 is a bar-gripping machine. 14 and a cutting machine 18.

As described above, the compression spring 50 is provided in the bottomed hole 48 of the guide member 42. The end faces of the guide walls 144 and 146 on the adjustment bolt 40 side are shown in FIG. As shown in FIG. 3 and FIG. 5, a thin plate-shaped end plate 156 is attached by two bolts 158, 158, the ends of which are closed, and is located between the guide walls 144, 146. Pin nut 1
60 is fixed to the end plate 156 by bolts 162. The compression spring 50 is pressed toward the receiving portion 20 by the end plate 156 in a state where the end on the adjustment bolt 40 side is fitted to the pin nut 160, whereby the cutting machine 18 Part 20
That is, it is constantly urged in the direction away from the bar 12a gripped by the bar gripper 14. The cover 8
The pin 16 erected from 8 toward the guide member 42
Numeral 4 is engaged with the elongated hole 52 provided in the guide member 42, so that the relative movement between the cutting machine 18 and the bar gripping machine 14 is such that the pin 164 moves in the longitudinal direction of the elongated hole 52. Unnecessary relative movement is prevented by being limited to the range in contact with both ends in the direction. Note that the U-shaped notch 98 has a distance from the disc-shaped rotary cutting tool 16 side surface of the gripped bar 12a to the bottom of the U-shape, rather than the above-described movement amount of the cutting machine 18. It is formed so as to be slightly larger, thereby preventing interference between the bar 12a and the housing 86 and the cover 88 at the time of cutting.

On the other hand, as shown in FIGS. 1 and 4, the protruding portion 154 of the back plate 150 and the guide wall portion 146 are provided.
A pinion gear 168 engaged with the rack gear 44 of the guide member 42 is provided between the lower end of the guide member 42 and a protrusion 166 provided in the same direction in a plane parallel to the protrusion 154. 154,166
Is provided so as to be rotatable around its axis by a pin 170 in a state sandwiched between them. The pinion gear 168 has a shape in which a circular plate member is cut by two planes parallel and perpendicular to the longitudinal direction of the back plate 150 as shown in FIG. An arc-shaped notch 172 is provided at a corresponding portion of the guide wall 146.

Further, the protruding portion 1 of the pinion gear 168
A female screw hole 174 having a bottom from the other end face located on the end plate 156 side is provided at an end on the tip end side of the end plate 156 so that the axial direction is parallel to one end face on the end side. A feed lever 176 for rotating the pinion gear 168 is screwed into the female screw hole 174. Therefore, the feed lever 176 is
When rotated about 0, the cover 88 and the guide member 42 are engaged based on the engagement between the pinion gear 168 and the rack gear 44.
Are relatively moved. In the present embodiment, the feed lever 176 corresponds to an operation member.

As shown in FIG. 5, the housing 86 and the cover 88 are provided on the outer peripheral side of the disk-shaped rotary cutting tool 16 with side walls 178 and 181 protruding in opposite directions. By making the tips of the 180 abut against each other, a substantially closed space is formed in the housing 86. This side wall portion 178, 1
80 is provided along the outer peripheral surface of the disk-shaped rotary cutting tool 16 in most parts including the receiving part 20 side in which the U-shaped notch 98 is provided, and has a side wall part 17.
8 and 180 have a minimum necessary size that does not interfere with the outer peripheral surface of the disk-shaped rotary cutting tool 16. In the U-shaped notch 98, the side wall 18 on the cover 88 side
Although 0 is the same side wall height as the other parts, the side wall part 178 of the housing 86 is made a predetermined amount (for example, about 3 mm) lower than the other part, so that the side wall part 178 is Interference with the disk-shaped rotary cutting tool 16 is prevented.

Further, at the lowermost portion in FIG. 3 of the side wall portions 178 and 180 of the housing 86 and the cover 88, a chip discharge port 182 projecting to the outer peripheral side is formed. Neither side wall portions 178, 180 are provided on the distal end surface 184 of the chip discharge port 182,
Chips generated when cutting the bar 12 a with the disk-shaped rotary cutting tool 16 are discharged from the front end surface 184. A chip storage bag 186 as shown in FIG. 6 is attached to the chip discharge port 182 at an opening 188 provided at one longitudinal end thereof as shown in FIG. In addition, chips generated by the cutting operation are collected. The chip storage bag 186 is configured to have a capacity of, for example, about 1000 cm ³ (about 600 g as a chip weight) by, for example, heat-resistant fibers having air permeability. It is said to be able to withstand the temperature of powder (for example, when cutting iron material, it reaches about 200 ° C). In addition, the chip storage bag 18
6 is provided with a fastener 190 on one side in the longitudinal direction, and the chips collected in the bag are removed from the fastener 19.
Open 0 to process.

The bar cutting apparatus 10 configured as described above
The operation of cutting the bar 12a or the like such as a reinforcing bar constructed so that the axis is in the vertical direction by using is described below. The bar 12a such as a reinforcing bar is cut for the purpose of obtaining a clean end face suitable for gas pressure welding when connecting another bar such as a reinforcing bar (not shown) in the vertical direction, or as shown in FIG. Bars 12b, which are constructed adjacent to each other as shown in FIG.
This is performed for the purpose of making the axial length equal to 12c or the like.

First, the receiving portion 20 of the bar gripping machine 14 is shown in FIG.
The bar 12 adjacent to the bar 12a to be cut shown in FIG.
c, and is further moved toward the bar 12a, whereby the receiving surface 54b is positioned on the back side (the side opposite to the side where the main body of the bar cutting device 10 is located). At this time, the turning operation lever 60 of the bar material gripping machine 14 is
Is rotated from the fixed operation position H in the counterclockwise direction to the release operation position R. With the rotation of the rotation operation lever 60 counterclockwise, the rotation member 38 is adjusted. The pressing member 28 moves around the center of the tip end surface of the bolt 40 (that is, the second rotation axis) and around the axis of the bolt 26 (that is, the first rotation axis) in the clockwise direction from the position shown in the figure. The pin 34 is rotated, and the axis of the pin 34 (the fourth rotation axis) is determined from a straight line connecting the center of the tip end surface of the adjustment bolt 40 (the second rotation axis) and the axis of the pin 30 (the third rotation axis). Dynamic axis) has been removed. In addition, the bar 12a to be cut,
It is sufficient that the distance between the members b, c and the like is large enough to allow the receiving portion 20 to be inserted therebetween, and the distance d between the bars 12a, b, and c shown in FIG. As long as the maximum width D (width in the longitudinal direction of the cutting machine 18 and the guide member 42) D is larger than 20, the work by the bar cutting device 10 of the present embodiment is possible.

As described above, the receiving surface 54b is connected to the bar 12a.
After the rotary operation lever 60 is rotated clockwise in FIG. 3 to the fixed operation position H, the rotation member 38 and the pressing member 28 are moved in the opposite direction, that is, leftward. The pins 30 and 3 are rotated in the
The rod 12a is squeezed by the pressing portion 56 and the receiving portion 20 in a state where the shaft center of No. 4 and the center of the tip end surface of the adjustment bolt 40 are located on a straight line. Thereby, as shown in FIG. 1, the axial direction of the bar 12 a is set to the longitudinal direction of the receiving portion 20 (the direction of the intersection of the receiving surfaces 54 a and b).
That is, it is gripped in a state in which it coincides with the axial direction of the disk-shaped rotary cutting tool 16. As is clear from the above description, at the release operation position R of the rotation operation lever 60, the connecting member 32 is located at the release position where the rod 12a is not gripped by the pressing member 28, and is shown in FIG. In the fixed operation position H of the rotation operation lever 60, the connecting member 32
Is located at a fixed position where the rod 12a is gripped by the pressing member 28.

In the above state, the pressing member 28
Is urged in the clockwise direction in the figure by the urging force of the tension spring 74 and the reaction force given by the bar 12a, but as described above, the center of relative rotation with the connecting member 32 (the axis of the pin 30) Center), the relative rotation center of the connecting member 32 and the rotation member 38 (the axis of the pin 34), and the rotation center of the rotation member 38 (the center of the distal end surface of the adjustment bolt 40) are aligned. Therefore, the urging force and the reaction force are all received by the bolt 26 and the adjustment bolt 40. Therefore, the pressing member 28
Is fixed to the position where the bar 12a shown in FIG. 3 is gripped, and the bar 12a is securely gripped.

When the diameter of the bar 12a is different, the amount of rotation of the rotation operation lever 60 is excessive as compared with the state shown in FIG. 3, and the three points are not located on a straight line. In this case, the bar 12a cannot be gripped, but in this case, the screwing amount of the adjusting bolt 40 is changed according to the diameter to thereby fix the fixing operation position H.
In the above, the three points can be positioned on a straight line.
Therefore, within the range in which the screwing amount of the adjustment bolt 40 can be changed, the rod 1 having various diameters can be used.
2a can be gripped.

As described above, the bar material 12a is
After the switch 82 is operated and the disc-shaped rotary cutting tool 16 is rotated in the direction of arrow A shown in FIG. 2 in a state where the feed lever 176 is separated from the motor 84, that is, FIG. , The pinion gear 168 and the rack gear 44 are rotated.
And the cover # 88, to which the pinion gear 168 is attached, that is, the cutting machine 18, and the guide member 42, in which the rack gear 44 is provided, that is, the bar gripper 14, is relatively moved. At this time, as described above, the relative movement direction of the guide member 42, the cutting machine 18 and the bar 1
2a is linearly approached or separated from the direction, and the bar gripper 14 is a bar 12a standing upright.
The cutting machine 18, that is, the disk-shaped rotary cutting tool 16 is linearly directed to the bar 12 a by the turning operation of the feed lever 176, so that the cutting is performed. Be started. The feed lever 176 can be detached from the pinion gear 168 as needed, and the operator can directly grip the cutting machine 18 and direct it to the bar 12a.

The feed lever 176 is moved until the pin 164 erected on the cover 88 contacts the end of the elongated hole 52 provided on the guide member 42 on the receiving portion 20 side.
When the rod 12a is rotated against the urging force of the compression spring 50 provided in the bottomed hole 48, the bar 12a is relatively moved to the position 12a 'in FIG. 2, and the cutting is completed. At this time, the adjacent bar members 12b and 12c also move relative to each other as shown by the arrow in FIG. 2, similarly to the bar member 12a. 1
No interference occurs between the housing 2b and the cover 86b and the cover 88. That is, the width C of the housing 86 and the cover 88 in a direction perpendicular to the moving direction of the cutting machine 18 (that is, the longitudinal direction of the cutting machine 18) is a bar in the portion where the U-shaped notch 98 is provided. When the interval between the members 12 is the minimum dimension that can be cut, the width C and the width of the receiving portion 20 are set to be smaller than the distance between the bars 12b and 12c located on the left and right of the bar 12a to be cut. The maximum width D is determined. At the time of the above cutting, the rod 12a
Is located on the front side in the rotation direction A with respect to the locus B of the rotation center of the disk-shaped rotary cutting tool 16.

When the feed lever 176 is released after the cutting is completed as described above, the cutter 18 is moved in a direction away from the bar 12a in accordance with the restoring force of the compression spring 50, and the feed lever 176 is also returned to its original position. Is rotated to the position. Thereafter, the switch 82 is operated again to stop the rotation of the disk-shaped rotary cutting tool 16, and the turning operation lever 60 is turned counterclockwise in FIG. By removing the machine 14 from the bar 12a, a series of cutting operations is completed.

Here, in this embodiment, the bar cutting device 10 has a guide member 42 for linearly guiding the disk-shaped rotary cutting tool 16 in a direction approaching or separating from the bar 12a. Guide walls 144, 146 and back plate 14
A tool guide device comprising 8,150 is provided. Therefore, when cutting the bar 12a, the cutting machine 18, that is, the disk-shaped rotary cutting tool 16 is linearly moved toward the bar 12a gripped by the bar gripper 14, and even after cutting. It is moved linearly in a direction away from the bar 12a. Therefore, it is not necessary to secure the rotation angle as in the case where the disk-shaped rotary cutting tool 16 is rotated around a predetermined rotation axis different from the rotation axis to perform cutting, and is shown in FIG. It is possible to easily cut the rods 12 which are arranged relatively densely.

Further, since the cutting is performed by linearly feeding the cutting machine 18 as described above, unlike the case where the disk-shaped rotary cutting tool 16 is rotated, the cutting between the bar holding machine 14 and the bar 12a is performed. Relative rotation hardly occurs, and it is not necessary to have the bar gripper 14. Therefore, after the bar 12a is gripped by the bar gripper 14, the operator can move the cutting machine 18 toward the bar 12a with one hand, and the bar 12a is cut and removed at the time of cutting. The work can be performed safely by holding the upper part with the other hand to prevent the upper part from dropping.

In this embodiment, the bar gripper 1
A receiving portion 20 is provided at one end portion of the receiving portion 20 so as to protrude in a hook shape, and the receiving surface 54b (that is, at least a part of the pair of receiving surfaces 54a, b) is positioned on the back side of the rod 12a. And a pressing portion 56 having a pressing surface 58 located on the front side of the bar 12a. for that reason,
When cutting the bar 12a, as described above, the one receiving surface 54b of the receiving portion 20 that protrudes in a hook shape at one end of the bar holding machine 14 is attached to the side of the bar 12a (the bar 12a,
12c), and positioned on its back side,
By pressing the bar 12a from the front side toward the receiving surface 54 by the pressing portion 56, the bar 12
a is gripped. Therefore, compared to the case where the bar 12a is gripped from the side by the receiving portion 20 and the pressing portion 56, even when the bar 12 is relatively densely arranged as shown in FIG. The bar 12a to be cut can be gripped and cut.

Further, according to the present embodiment, as described above, at the fixed operation position H of the rotary operation lever 60 that grips the bar 12a, the pressing portion 56 (that is, the pressing member 28) and the connecting member 32 are not connected. The center of relative rotation (ie, the axis of the pin 30), the center of relative rotation between the connecting member 32 and the rotating member 38 (ie, the axis of the pin 34), the center of rotation of the rotating member 38 (ie, the adjustment bolt) 40 center of the tip surface)
Since the three rotation centers are located on a straight line, the pressing portion 56 is separated from the receiving surface 54 by the pressing member 28 generated by the reaction force received from the bar 12a and the urging force received from the tension spring 74 in FIG. The force for turning in the clockwise direction is all received by the adjustment bolt 40 and the bolt 26, and the connecting member 32 and the turning member 38
Does not act as a force to rotate the rod 12a, so that the bar 12a is securely held by a simple operation.

According to the present embodiment, the axis O of the bar 12a is located forward of the trajectory B of the center of rotation of the disk-shaped rotary cutting tool 16 in the rotation direction A. When the outer peripheral blade of the disk-shaped rotary cutting tool 16 is brought into contact with the bar 12a at the time of cutting, a force is generated in a direction in which the disk-shaped rotary cutting tool 16 approaches the bar 12a side, and cutting is performed. At times, the force required to guide the cutting machine 18 in the direction approaching the bar 12a is reduced, and the cutting process can be performed more easily.

According to the present embodiment, the bar gripper 14
A rack gear 44 is provided on a side surface of the guide member 42 of the cutting machine 18, and a protrusion 166 protruding from a guide wall 146 provided integrally with a cover 88 of the cutting machine 18 and a back plate 15 are provided.
A pinion gear 168 is provided between the pinion gear 168 and the protruding portion 154 that protrudes from the pin 0, and the pinion gear 168 is provided with a feed lever 176. Just by rotating the disk-shaped rotary cutting tool 16 clockwise in FIG. 3, the disk-shaped rotary cutting tool 16 is directed toward the bar 12a. Therefore, the rack gear 44, the pinion gear 168
In addition, the feed lever 176 acts as a booster, so that the disk-shaped rotary cutting tool 16 can be moved more easily, and the bar 12a can be cut more easily.

In this embodiment, the U-shaped notch 98 has a side wall 180 on the cover 88 side having the same side wall height as other parts, and the side wall 178 of the housing 86 has another side. Since the height of the side wall is slightly lower than that of the notched portion 98, the disk-shaped rotary cutting tool 16 is exposed. Only a minimum necessary gap is provided to prevent interference with the tool 16. Therefore, the side wall portion 178 formed in the notch 98 on the housing 86 side functions as a cut piece stopper for preventing a cut piece generated by cutting the bar 12a from entering the housing 86. Therefore,
Even when the cut piece has a relatively thin coin shape, entry into the housing 86 is suitably suppressed, and even when the bar 12a is a metal bar such as a reinforcing bar, the disk-shaped rotary cutting tool is used. The breakage of the 16 outer peripheral blades can be suitably suppressed.

Further, a chip discharge port 182 is provided on the side surface of the housing 86 and the cover 88, and a chip storage bag 186 is provided in the chip discharge port 182, so that chips generated by the cutting process are provided. Is collected, and burns and dust inhalation of workers due to high temperature chips are suitably suppressed, and work safety is improved.

The disk-shaped rotary cutting tool 1 of the cutting machine 18
Since 6 is rotated in a plane perpendicular to the axis of the bar 12a, it is possible to cut the bar 12a so that its cut end face is perpendicular and flat in the axial direction. Therefore, when another bar is connected to the bar 12a by welding or the like, a clean end face suitable for welding is obtained.

A compression spring 50 is provided in the bottomed hole 48 of the guide member 42, and the cutting machine 18 is urged against the bar gripper 14 in a direction away from the bar 12a. At the time of the cutting operation for moving the cutting machine 18 to the bar 12a side, an appropriate movement resistance is given, the bar 12a can be cut slowly, and the disk-shaped rotary cutting tool 16 is more reliably prevented from being damaged. At the same time, the cutting machine 18 is returned to the original position immediately upon completion of the cutting, so that high working efficiency can be obtained.

Further, since the pressing member 28 is always urged by the tension spring 74 in a direction in which the pressing surface 58 is separated from the receiving surface 54, the rotation operating lever 60 is always released when the bar 12a is gripped. It is located at the operation position, and the gripping operation is further facilitated.

In the above description of the cutting operation,
Although the bar 12a is constructed and erected, the bar cutting device 10 can also be used to cut the bar 12 that has not yet been constructed. The cutting operation may be performed, for example, as described above, or may be performed by fixing the bar cutting device 10 to a fixed base (not shown). That is, as shown in FIGS. 1 and 2, a pair of female screw holes 192 and 192 are provided in the receiving surface 54 b of the receiving portion 20.
If this receiving portion 20 is attached to a fixing stand (not shown) by a bolt and the bar material cutting device 10 is fixed such that the receiving portion 20 is located on the lower side and the motor 84 is located on the upper side, similar to the conventional desktop type cutting device, It is possible to use.

While the embodiment of the present invention has been described in detail with reference to the drawings, the present invention can be embodied in still another embodiment.

For example, in the above-described embodiment, the moving member composed of the guide walls 144, 146, and the back plates 148, 150 is closely arranged on the outer peripheral surface of the guide member 42, so that the tool guide device is provided. Although the relative movement direction of the moving member and the guide member 42 is configured to be only in the longitudinal direction of the guide member 42, the cutting machine 1
8 is inserted into the guide member 42 so as to be relatively movable in the longitudinal direction and immovable in the direction perpendicular to the longitudinal direction, so that the tool guide device is configured. good. In addition, the tool guide device does not necessarily need to include the longitudinal guide member 42. For example, the guide member includes a rolling member or a rolling bearing provided at several places in the longitudinal direction of the cutting machine 18, and the cutting device includes a cutting member. Machine 18
May be provided with a moving member to be engaged with the rolling member or the like.

The compression spring 50 provided in the bottomed hole 48 of the guide member 42 is for giving an appropriate operation resistance to the cutting machine 18 and returning to the original position immediately after the cutting is completed. It does not necessarily have to be provided. Similarly, the tension spring 74 may not necessarily be provided.

In the embodiment, the bar gripper 14 is used.
The receiving portion 20 is provided at one end thereof so as to protrude in a hook shape, one receiving surface 54b is positioned on the back side of the bar 12a, and the pressing surface 58 of the pressing portion 56 is connected to the bar 12a.
The bar 12a is configured to be pinched and gripped from the front and back sides by being provided so as to be positioned on the front side of the bar.
a may be configured to be gripped from its side.

The shape of the receiving surface 54b of the receiving portion 20 is a planar shape so as to be perpendicular to the other receiving surface 54a, but the shape may be changed as appropriate. For example,
It may be formed in an arc shape along the outer peripheral surface of the bar 12a, or may be formed in a V shape. In the case of these shapes, it is also possible to hold the bar 12a only between the pressing portion 56 and the receiving surface 54b. That is, the entire receiving surface 54 may be located on the back side of the bar 12a.

In the embodiment, the pressing member 2 having the pressing portion 56 and attached to the base 24 of the receiving portion 20 is provided.
8, a connecting member 32 connected to the pressing member 28 so as to be relatively rotatable around the axis of the pin 30, and an end portion connected to the connecting member 32 so as to be relatively rotatable around the axis of the pin 34. Adjust bolt 40 at the other end.
Member 3 rotatably provided around the center of the front end face of
And the bar 12a is gripped in a state where the center of relative rotation (the axis of the pins 30, 34) and the center of rotation of the rotating member 38 are aligned. For example, the rotating member 38 may be rotatably attached to the tip of the adjustment bolt 40 by a pin or the like, or the pressing portion 56 may be attached to the receiving surface 54 by a bolt or the like attached to the guide member 42 or the like. The bar 12a may be configured so as to be gripped by pressing toward it.

Further, in the embodiment, the axis of the bar 12a is configured to be located forward of the trajectory of the rotation center of the disk-shaped rotary cutting tool 16 in the rotation direction. It may be configured to be located on the locus or on the rear side in the rotation direction with respect to the locus. However, it is preferable to configure the rod 12a such that the axis of the rod 12a is located on the front side in the rotation direction, as in the embodiment, since the cutting resistance is reduced.

The rack gear 44, the pinion gear 16
8 need not be provided. In that case, the bar 12
When cutting a, the cutting machine 18 may be directly sent directly by the operator.

In the embodiment, the switch 82 for rotating the disk-shaped rotary cutting tool 16 was provided, and the switch 82 was operated when the cutting machine 18 was moved toward the bar 12a. However, for example, an interlocking switch that starts the rotation of the disc-shaped rotary cutting tool 16 in conjunction with the movement of the cutting machine 18 or the operation of the feed lever 176 before the cutting machine 18 contacts the bar 12a may be provided. .

In the embodiment, the bar cutting device 1
0 is provided with a power cord 80, and the motor 84, that is, the disk-shaped rotary cutting tool 16 is configured to be rotated by a power source to which the power cord 80 is connected. And may be configured to be used in a rechargeable manner.

In the embodiment, the chip storage bag 18 is used.
6 is provided with a fastener 190, and this fastener 1
90 is opened so as to treat the swarf accumulated inside. For example, a portion provided with a fastener 190 is formed in a mere opening, and a surface fastener covering a wide area including the opening is provided. May be provided to open the hook-and-loop fastener to process chips.

Further, in the embodiment, the case where the metal rod 12 such as a reinforcing bar is cut has been described. However, the rod cutting apparatus 10 may be, for example, a resin (for example, a vinyl chloride resin) used for a water pipe. The present invention can be similarly used for cutting a rod or a pipe made of another material such as a pipe.

Although not specifically exemplified, the present invention can be variously modified without departing from the gist thereof.

[Brief description of the drawings]

FIG. 1 is a front view showing a bar cutting device according to one embodiment of the present invention.

FIG. 2 is a plan view of the bar cutting device of FIG. 1;

FIG. 3 is a bottom view of the bar cutting device of FIG. 1;

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a sectional view taken along line VV in FIG. 2;

FIG. 6 is a view showing a chip storage bag used by being attached to the bar cutting device of FIG. 1;

[Explanation of symbols]

10: Bar material cutting device 12: Bar material 14: Bar material gripping machine 16: Disc-shaped rotary cutting tool 18: Cutting machine {42: Guide member, {144, 146: Guide wall portion, 148, 150: Back plate} (Moving member)｝ (tool guide device)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B23D 45/16 B23D 45/12

Claims (5)

(57) [Claims] 1. A bar gripper for gripping a bar, and an outer peripheral blade. The cutting device is provided around a rotation axis parallel to an axial direction of the bar for cutting the bar gripped by the bar gripper. A bar cutting device including a longitudinal cutting machine having a disk-shaped rotary cutting tool driven at one end, the cutting machine being provided between the bar gripping machine and the cutting machine. wherein one end tool guide apparatus for linearly guided the disc-shaped rotary cutting tool provided with along the cutting machine so as to approach the bar in the longitudinal direction of the bar gripping machine, Extending in the axial direction of the bar to receive each of the bars
A body having at one end a receiving portion comprising a pair of receiving surfaces that beauty and mutual intersection line coincides with the axial center direction, attached to the body comprises a push pressure side, depending on the rotation operation
Gripping the rod member between the pair of receiving surfaces and pressing surfaces by Rukoto is pressed toward the intersecting line of the receiving surface of the one pair Te
A bar cutting device, comprising : a pressing member to be fixed . 2. A said bar grippers, the receiving portion, the disc-shaped rotary cutting at least a portion of one end the pair of receiving surfaces provided to project in a hook shape to the body the bar Located on the opposite side of the tool
Ones, and the said pressing portion, the pressing surface bar cutting apparatus according to claim 1 is to be Ru allowed to position on the disc-shaped rotary cutting tool side of the rod member. 3. A bar gripper for gripping a bar and an outer peripheral blade.
Cutting the bar held by the bar holding machine
Is driven to rotate around a rotation axis parallel to its axis.
A longitudinal cutting machine having a disc-shaped rotary cutting tool at one end
A bar cutting device provided between the bar gripper and the cutting machine;
The disk-shaped rotary cutting tool provided at one end of the machine is
The cutter is moved straight along its length to approach the material.
A tool guide device for linearly guiding is provided, and the bar holding machine is provided to protrude in a hook shape at one end to receive the bar.
At least a part of the receiving surface is the disk-shaped rotary cut of the bar.
Body to have a receiving portion that is is positioned on the opposite side of the tool side
And the bar is positioned on the disk-shaped rotary cutting tool side.
The bar is provided with a pressing surface toward the receiving surface of the receiving portion.
Holds the bar between the receiving part by pressing
It said first pivot axis and a pressing member which is rotatably supported by the first pivot axis about parallel to the axial direction of the rod to the body, one end side forms a longitudinal shape in order A first rotation member provided on the main body so as to be rotatable around a second rotation axis provided in parallel with the first rotation axis; The first rotation member is connected at the other end to the other end of the first rotation member around a fourth rotation axis parallel to the first rotation axis. The second rotation axis, the third rotation axis, and the fourth rotation axis are connected so as to be rotatable, and the pressing member grips the bar. Between a position and a release position where the fourth rotation axis is removed from a straight line connecting the second rotation axis and the third rotation axis so that the pressing member does not grip the bar. Be in a second rotating member which is rotated, characterized in that it comprises
That the bar cutting device. 4. A bar gripper for gripping a bar and an outer peripheral blade.
Cutting the bar held by the bar holding machine
Is driven to rotate around a rotation axis parallel to its axis.
A longitudinal cutting machine having a disc-shaped rotary cutting tool at one end
A bar cutting device wherein the the bar grippers disposed between the cutting machine, the axis of the bar, which is gripped by the bar grippers of the cutting machine
When the disk-shaped rotary cutting tool is positioned at a position closer to the rotation direction of the disk-shaped rotary cutting tool than an extension of the movement locus of the center of rotation of the disk-shaped rotary cutting tool provided at one end, the disk-shaped rotary cutting tool is mounted on the bar. To
Approach the cutting machine in a straight line along its length
Characteristically equipped with a tool guide device
Rod cutting device to. 5. The tool guide device includes a rack gear provided on one of the cutting machine and the bar gripper, and a rack gear provided on the other of the cutting machine and the bar gripper and engaged with the rack gear. A pinion gear, provided on the pinion gear, and rotating the pinion gear around a predetermined rotation axis so that the cutting machine approaches the bar material based on the engagement between the pinion gear and the rack gear. The bar material cutting device according to any one of claims 1 to 4 , further comprising an operation member for linearly moving the bar material in the direction of movement.