JP2525639Y2 - Pipe cutting machine with automatic chamfering device - Google Patents

Description

[Detailed description of the invention]

[0001]

This invention is used for cutting pipes used as construction temporary materials, etc.
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe cutting machine with an automatic chamfering device for automatically removing burrs on a cut end of a pipe generated during cutting.

[0002]

2. Description of the Related Art Generally, a pipe cutting machine for cutting a pipe used as a temporary construction material or the like to a desired length includes a cutting made of a thin resinoid grindstone or the like which rotates a pipe fixedly supported by a pipe vise at a high speed. The type of cutting with a grindstone is widely used because of easy handling and easy cutting.

[0003]

[Problems to be Solved by the Invention] By the way, in the pipe cutting machine of the above type, the cutting end of the pipe is burred due to the grinding and cutting by a grindstone, and there is a disadvantage that the pipe cutting machine cannot be used as a temporary construction material as it is. It is necessary to chamfer the cut end of the pipe in order to remove the burrs after cutting.
In this case, conventionally, the pipe is cut with a pipe cutting machine and sent out with the burr generated at the cut end, and in a later process, the cut end of the pipe is chamfered by hand using a hand grinder or the like to chamfer the burr. I try to remove it. For this reason, there has been a problem that the work efficiency is extremely low and that a great deal of labor is imposed on the operator.

The present invention solves the above-mentioned drawbacks of the prior art, and aims to provide a pipe cutting machine with an automatic chamfering device that can efficiently chamfer a cut end of a pipe without requiring much labor. Things.

[0005]

SUMMARY OF THE INVENTION A pipe cutting machine with an automatic chamfering device according to the present invention is provided at a predetermined position on an upper surface of a machine base having a substantially rectangular box shape, and is made of a thin resinoid grindstone driven to rotate at high speed. A cutting machine that cuts a pipe with a cutting grindstone, and a pipe vise that is disposed opposite to the cutting machine at a predetermined position on the upper surface of the machine base and fixedly supports the pipe on the upper surface of the machine base via a pair of vice pieces by a cylinder. A support frame which is disposed movably back and forth in the middle of the machine base, and which is moved back and forth by a cylinder attached and fixed at a predetermined position of the machine base; and A lifting / lowering plate that moves up and down by a cylinder attached and fixed to a predetermined position of a support frame, and a chamfering machine disposed on the lifting / lowering plate and chamfering a cut end of a pipe by a rotationally driven chamfering cutter. It is.

[0006]

In the pipe cutting machine with the automatic chamfering device of the present invention, the pipe fixed on and supported by the pipe vise on the upper surface of the machine base is cut by the cutting machine, and then the support frame and the elevating plate are automatically advanced and raised. By doing so, the chamfering cutter of the chamfering machine is carried to the cutting end of the pipe, and the burrs generated at the cutting end of the pipe when the pipe is cut by the chamfering cutter are removed.

[0007]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a first embodiment of the present invention; In the figure, 1 is a machine base having a substantially rectangular box shape,
2 is a cutting machine arranged on one side of the upper surface of the machine base 1 and 3 is a machine 1
A pipe vise 4 is disposed on one side of the upper surface of the machine 1 so as to face the cutting machine 2, a support frame 4 is disposed inside the machine base 1 so as to be movable back and forth (left and right in FIGS. 1 and 2), and 5 is a support. An elevating plate 6 is provided on the frame 4 so as to be able to move up and down.

The cutting machine 2 supports a swinging frame 8 on a supporting member 7 fixed to one side of the upper surface of the machine base 1 so as to freely swing up and down, and the swinging frame 8 is made of a thin resinoid grindstone or the like. The cutting wheel 9 is rotatably mounted, and a cutting motor 11 for rotating the cutting wheel 9 at high speed through a power transmission means, for example, a belt 10, and for swinging the swing frame 8. The handle 12 is attached and fixed to an arbitrary position of the swing frame 8, and the operator swings the swing frame 8 downward from above by holding the handle 12 to rotate at high speed by the cutting motor 11. The cutting wheel 9 to be driven is provided with a cutting feed.

The pipe vise 3 fixes the fixed vise piece 13 to the upper surface of the machine base 1 and fixes the fixed vise piece 13.
The movable vice piece 14 is opposed to the piston rod 15a of the vise cylinder 15 installed on the upper surface of the machine base 1 by appropriate means.
After the pipe W to be cut is disposed between the two vice pieces 13 and 14, the vise cylinder 15 is operated to extend the piston rod 15 a, so that the two vise pieces 13 and 14 are extended. , 14 to fix and support the pipe W therebetween.

The support frame 4 has rollers 16, 16...
Are projected to the side and are rotatably mounted, and the rollers 16, 16 are respectively mounted on front and rear rails 17, 17,. The distal end of the piston rod 18a of the pushing cylinder 18, which is rotatably fitted and fixed to the rear of the machine base 1 by appropriate means, is connected to the upper rear, and the pushing cylinder 18 is operated by operating the pushing cylinder 18. By expanding and contracting the piston rod 18a, the piston rod 18a is configured to move in the front-rear direction of the machine base 1 via the rollers 16, 16,.

The raising and lowering plate 5 is slidably inserted into and supported by four guide rods 19, 19,... Which are suspended from four corners of the support frame 4, and is lifted up and fixed to the bottom of the support frame 4. The bottom part is connected to the tip of the piston rod 20a of the cylinder 20, and the push-up cylinder 20 is operated to extend and retract the piston rod 20a, so that the cylinder 20 moves up and down along the guide rods 19, 19 ... Have been.

The chamfering machine 6 has a chamfering motor 21 mounted and fixed on the elevating plate 5 by an appropriate means, and a chamfering cutter 23 mounted on a tip of a rotating shaft 22 of the chamfering motor 21. The cut end of the pipe W is chamfered by contacting the cut end of the pipe W with a bevel cutter 23 that is rotated and driven by the chamfer motor 21.

A description will be given of the pipe cutting operation in the apparatus of the present invention having the above-described configuration. First, the pipe W to be cut
Is arranged between the two vice pieces 13 and 14 of the pipe vise 2 arranged on the upper surface of the machine base 1 so that the cutting position coincides with the cutting grindstone 9 of the cutting machine 2. 15a is extended and held between both vise pieces 13 and 14. Thus, the pipe W to be cut is fixedly supported on the upper surface of the machine base 1. Next, the cutting motor 11 of the cutting machine 2
Is operated to rotate the cutting grindstone 9 at high speed via the belt 10, and then the swing frame 8 is swung from above to below by the handle 12 to feed the cutting grindstone 9 by cutting. Then
Since the cutting whetstone 9 contacts the pipe W and cuts the pipe W, the pipe W is cut at a predetermined cutting position. After the pipe W has been cut at the predetermined cutting position in this manner, the swing frame 8 is swung upward from below by the handle 12 and returned to the original position. A control switch such as a switch is operated, whereby the cutting motor 11 stops, and the rotational drive of the cutting grindstone 9 stops. At the same time, the chamfering motor 21 of the chamfering machine 6 is operated to rotationally drive the chamfering cutter 23, and the piston rod 20a of the push-up cylinder 20 is extended to move the lifting plate 5 to the chamfering of the chamfering machine 6. The cutter 23 is raised until the cutter 23 is aligned with the same axis as the pipe W. Next, the piston rod 18a of the pushing cylinder 18 extends to advance the support frame 4, and accordingly the chamfering machine 6 advances to contact the rotatably driven chamfering cutter 23 with the cut end of the pipe W. The cut end of the pipe W is chamfered by the chamfering cutter 23 to remove burrs. When the burr is removed by chamfering the cut end of the pipe W in this manner, the piston rod 18a of the pushing cylinder 18 contracts and retreats the support frame 4, and the piston rod 20a of the pushing cylinder 20 contracts and moves up and down. The plate 5 is lowered, and the chamfering machine 6 is returned to the original position. At the same time, the chamfering motor 21 stops and the rotation of the chamfering cutter 23 stops. After this,
The cut pipe W is removed from the pipe vise 3, and thereafter the pipe W is cut in the same manner.

As described above, the device of the present invention is capable of automatically removing the burrs generated at the cut end of the pipe W when cutting the pipe.

Incidentally, the device of the present invention is not limited to the above-described embodiment, but can be variously modified other than the above-described embodiment.

[0016]

According to the present invention, since the burrs generated at the cut end of the pipe at the time of cutting the pipe can be automatically removed, the chamfer is manually performed by a worker in a later process as in the conventional case. The troublesome work of performing the operation is not required at all, the labor of the operator required for cutting the pipe is greatly reduced as compared with the related art, the time required for the operation is shortened, and the workability can be improved. Therefore, the device of the present invention is practically advantageous and very convenient.

[Brief description of the drawings]

FIG. 1 is a schematic front view showing an embodiment of a pipe cutting machine with an automatic chamfering device according to the present invention.

FIG. 2 is a schematic side view of FIG.

FIG. 3 is a schematic plan view of FIG.

[Explanation of symbols]

 1 Machine stand 2 Cutting machine 3 Pipe vise 4 Support frame 5 Lifting plate 6 Chamfering machine 9 Cutting whetstone 11 Cutting motor 13 Fixed vice piece 14 Movable vice piece 15 Vice cylinder 16 Roller 17 Rail 18 Push-in cylinder 19 Guide rod 20 Push-up cylinder 21 Chamfer motor 23 Chamfer cutter W pipe

Claims (1)

(57) [Scope of request for utility model registration] 1. A cutting machine which is disposed at a predetermined position on an upper surface of a machine base having a substantially rectangular box shape and cuts a pipe by a cutting grindstone made of a thin resinoid grindstone or the like which is driven to rotate at a high speed;
It is disposed opposite the cutting machine at a predetermined position on the upper surface of the machine stand,
A pipe vise that fixedly supports the pipe on the upper surface of the machine through a pair of vise pieces by a cylinder, and was disposed movably back and forth between the inside of the machine and was fixedly mounted at a predetermined position on the machine. A support frame that moves back and forth by the cylinder,
An elevating plate, which is disposed on the supporting frame so as to be able to move up and down, and which moves up and down by a cylinder attached and fixed to a predetermined portion of the supporting frame; and a pipe cut by a chamfering cutter which is disposed on the elevating plate and driven to rotate. A pipe cutting machine with an automatic chamfering device, comprising: a chamfering machine for chamfering an end.