JPS6045985B2 - pipe cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for cutting pipes using a gas burner.

Conventionally, when cutting a pipe at a right angle or diagonally, a cutting line was first drawn on the outer periphery of the pipe, and then the cut was made using a hacksaw or a gas burner.

In the former case, there was a problem that the pipe could not be cut if the perpendicular angle of the pipe became large. In the latter case, since the burner is manually gripped and fused, the cut surface has a poor finish, requires post-processing using a hand grinder, and requires time and effort to rotate the pipe one by one.

There was also the problem that marking was time consuming. Furthermore, when creating a bevel on a cut surface, the work is done manually, which has the disadvantage of being time-consuming. The object of the present invention is to eliminate the above-mentioned drawbacks by making it possible to automatically cut a pipe without being restricted by its diameter and to easily provide a groove. This invention arranges two parallel pipes before and after the tip of a rotating shaft that rotates at a low speed, aligns the axial center of these pipes with the axial center of the rotating shaft, and uses a pin to prevent the rotating and pipes from intersecting each other. The ends of at least two arms parallel to one end of the two shafts are inserted through the shafts, which are rotatable around the axes of the pipes, and can be slid into both pipes and fixed at a predetermined position. are crossed and rotatably supported by a pin, and two or more short tubes are crossed at the tip of the arm, and the intersection of the arm and the short tube is rotatably supported by a pin. In addition, the ends of the slide shafts of the same number as the short tubes are supported by removable pins on the connecting plate, and the slide shafts are passed through the short tubes, and the tip of one slide shaft is gas-fused. A rotor is provided at the tip of the remaining slide shaft, and this rotor is pressed against the inner circumference in the case of a large-diameter vibrator and against the outer circumference in the case of a small-diameter vibrator. An annular plate is installed that can stand still and change the angle of the plate surface freely.
In addition, the tips of the parallel members are crossed at both ends of the vibrator, and the intersection is pivotally supported, and the rotor provided at the end of the parallel member is brought into contact with the plate surface of the annular plate, and the vibrator is held at right angles. When cutting, make the plate surface of the annular plate perpendicular to the axis of the rotating shaft, and when cutting the vibrator diagonally, make the plate surface of the annular plate inclined to the axis of the rotating shaft, and further open the cut end of the vibrator. To provide a cutting device for a vibrator which supports a tip so that the angle of a tip supported by a slide shaft becomes the angle of a groove.

Embodiments of the present invention will be described below with reference to the accompanying drawings.

In the figure, reference numeral 1 denotes a rotating shaft that rotates at a low speed, and from the tip of this rotating shaft 1, parallel plate-like bodies 2, 2 protrude forward.

In addition, two vibrators 3, 3 which are parallel to each other in the front and back are fitted between the plate-shaped bodies 2, 2, and both plate-shaped bodies 2, 2 are fitted with the following:
Both sides of the vibrators 3, 3 are rotatably attached via pins 4.

The axes of both vibrators 3 supported by the plate-shaped body 2 are aligned with the eight rotational shafts 1, and the axes of the pins 4 are aligned with the aligned axes.

Further, shafts 5, 5 are slidably inserted through both the vibrators 3, 3, and a stopper 6 is provided on the shafts 5, 5 to stop the shaft 5 from sliding with respect to the vibrator 3.

In the illustrated case, the above-mentioned fastener 6 is composed of a band and a fastener (a nut screwed onto a bolt) inserted through both ends of the band.

Further, at one end of both the shafts 5, 5, the intersecting end sides of at least two parallel arms 7, 7 are rotatably supported by a pin 8.

The above-mentioned arm 7 is formed by two plate-like bodies 9 with their plate surfaces facing each other, and the plate-like bodies 9, 9 are arranged on both sides sandwiching the shafts 5, 5, so that the pin 8 is The shaft is supported while aligning the core with the axis of the shaft 5.

Furthermore, both ends of two or more parallel short tubes 10 are crossed at the tips of the arms 7, 7, and this crossing portion is rotatably supported by a pin 11.

The above-mentioned short tube 10 is assembled by fitting the end between the plate-like bodies 9 and 9 with the axis of the shaft 5 and the axis of the short tube 10 parallel to each other, and then inserting the axis between the axis of the short tube 10 and the axis of the pin 8. Both sides of the short tube 10 are pivotally supported while aligning with the core.

In addition, while inserting the slide shaft 12 into each short tube 10,
The end of each slide shaft 12 is connected to a connecting plate 13 via a detachable pin 14. The above-mentioned pin 14 is composed of a bolt and a nut screwed into the bolt, and is designed to be removed by removing the nut.

Further, at the tip of one slide shaft 12 close to the shaft 5 side, a gas melting nozzle 15 is supported which can be adjusted to any angle. In order to support the crater 15, a seat plate 17 is provided which protrudes from the end edge of the plate-like body 16 to one side of the plate-like body 16 in the case shown in the figure.
A seat plate 17 is fixed to the seat plate 8, and an arcuate groove 19 is formed between both side edges of one side of the seat plate 17 to be recessed into the seat plate 17 side, and an arcuate groove 19 is provided between both ends of the arcuate groove 19. long hole 20
The projection 21 protruding from the outer peripheral band 22 of the crater 15 is fitted into the arcuate groove 19, and the bolt 23 is screwed in from the elongated hole 20 toward the projection 21 to close the crater 1.
5, and the angle of the crater 15 can be changed freely. Furthermore, a rotor 24 is provided at the tip of the remaining slide shaft 12.

The circumferential edge of the rotor 24 is V-shaped and is brought into point contact with the circumferential surface of the vibrator.

Further, the ends of the springs 25 are removably engaged with the connecting plate 13 and the arm 7 by hooks and rings, so that the rotor 24 is pressed against the circumferential surface of the vibrator. Also,
The tips of the parallel members 26, 26, which are parallel to the plate-like body 2 at the same distance from the plate-like body 2, are crossed at both ends of both the vibrators 3, 3, and parallel to the vibrator 3 via the pin 27. The intersection portions of the members 26 are rotatably supported.

The above-mentioned parallel members 26 are each formed of two plate-like bodies that sandwich the vibrator 3, and are supported on both sides of the vibrator 3 by aligning the axis of the pin 27 with the axis of the vibrator 3. has been done.

Furthermore, a rotor 28 is provided at the ends of both parallel members 26.

Like the rotor 28, the rotor 28 has a V-shaped peripheral edge so as to make point contact.

On the outside of the tip of the rotating shaft 1, the above-mentioned parallel members 2 are provided on the plate surface.
A stationary annular plate 29 is provided which allows the rotors 2 of 6 and 26 to contact each other and whose surface can be tilted at a predetermined angle from the vertical.

In the illustrated case, the annular plate 29 fits the cylindrical body 30 on the outside of the rotating shaft 1, holds the cylindrical body 30 so that it does not rotate, and also holds the cylindrical body 30 from both sides of the cylindrical body 30. A pin 31 whose axis coincides with the axis of the pin 3 is provided protrudingly.
1 is rotatably attached to the inner circumference of the annular plate 29, and furthermore, a semicircular worm wheel 32 is provided on the rear surface of the annular plate 29, and a handle 33 with a handle 33 supported on the cylindrical body 30 is attached to the worm wheel 32. The annular plate 2 is engaged with the worm gear 34 and rotated by the handle 33.
The angle of 9 can be changed. As shown in the figure, by providing an annular groove 35 on the plate surface of the annular plate 29 and fitting the circumferential edge of the rotor 28 into this annular groove 35,
The rotor 28 can be guided. In the figure, reference numeral 36 denotes a base, and on this base 36 is a slider 3 that slides back and forth with a female screw screwed into a male screw having a handle.
7 is provided.

38 is a pillar installed on the slider 37, 39 is a pillar 38
The lifting table 39 is raised and lowered using the handle as a guide, and the lifting table 39 is raised and lowered using a male screw with a handle and a female screw screwed into the male screw, as described above.

Reference numeral 40 denotes a gear provided at the end of the rotating shaft 1 supported on the lifting table 39, and this gear 40 includes a gear 43 driven by a motor 41 installed on the lifting table 39 via a reducer 42.
are interlocking.

The cutting device according to the present invention has the above-described configuration, and the cutting method will be explained next.
After setting, align the axis of the vibrator A with the axis of the rotating shaft 1.

Further, when cutting the vibrator A at a right angle, the plate surface of the annular plate 29 is made to be perpendicular to the axis of the rotating shaft 1.

At this time, the axes of the vibrator 3 and the shaft 5 intersect the axis of the rotating shaft 1 at right angles, and the axis of the arm 7 intersects the axis of the shaft 5 at right angles.

Further, the tip of the nozzle 15 is aligned with the cutting line of the vibrator A, and the rotor 24 is brought into contact with the outer periphery of the vibrator A as shown in FIG.

At this time, the rotor 24 is brought into contact with the vibrator A so as to stretch the spring 25, so the rotor 24 is pressed against the vibrator A.

The operation of pressing the rotor 24 against the vibrator A is as follows: First, loosen the stops 6 that are in contact with both end surfaces of the vibrator 3, and then press the rotor 24 against the vibrator A while sliding the shaft 5. Then, the fasteners 6 are brought into contact with both ends of the vibrator 3, and the fasteners 6 are tightened.

When the motor 41 starts operating and the rotating shaft 1 is driven, the nozzle 15 moves in the circumferential direction of the vibrator A, and the combustion gas from the nozzle 15 melts the vibrator A.

The above-mentioned fusing ends with one rotation of the arm 7.

Further, in order to cut the vibrator A diagonally (in the case where the cut end is inclined with respect to the axis of the vibrator A), the annular plate 29 is rotated and tilted so as to have the same angle as the diagonal cutting angle.

At this time, one parallel member 26 is pushed out while the other parallel member 26 is pushed back, so the vibrator 3 is inclined with respect to the plate-shaped body 2, and one arm 7 is protruded with respect to the other arm 7. As shown in FIG. 8, the axes of each short tube 10 and slide shaft 12 are tilted at an angle of inclination equal to the angle of inclination of the plate surface of the annular plate 29.

At this time, the crater 15 also tilts in the same way.

Then, in the same manner as described above, the arm 9 is rotated while driving the rotary shaft 1, and the vibrator A is cut obliquely by the nozzle 15.

Furthermore, when a groove is provided on the cut end face of the vibrator A, the tip 15 is inclined so that the axis of the tip 15 is parallel to the angle of the groove, as shown in FIG.

Then, while rotating arm 9 in the same manner as described above,
A groove a1 is provided while being fused and cut by the combustion gas in Step 5.

In addition, the diameter of the vibrator A is large and the slide shaft 12 is placed on the ground.
If the ends of the pin 1 collide, first remove the spring 25 and remove the pin 1.
4 and remove the connecting plate 13, and remove each short pipe 1.
Remove the slide shaft 12 from 0.

After that, the slide shafts 12 are inserted into the short tubes 10 so that the rotor 24 and the crater 15 are located outside the rotation line of the arm 7, and the ends of each slide shaft 12 and the connecting plate 13 are connected via the pins 11, Also, both ends of the spring 25 are locked to the arm 9 and the connecting plate 13.

Then, as shown in FIG. 9, the rotor 24 is brought into contact with the inner periphery of the vibrator A, and while the arm 7 is being rotated, the crater 1 is
5, the vibrator A is fused.

As described above, according to the vibrator cutting device according to the present invention, the vibrator can be cut by melting with the tip tip of the arm while the arm is rotated by the rotating shaft.

In addition, the annular plate that comes into contact with the end rotor of the parallel material can be rotated so that the axis of the rotating shaft intersects the plate surface of the annular plate at right angles, or the axis of the rotating shaft and the plate surface of the annular plate are crossed diagonally. Since the axis of the crater can be made perpendicular or oblique to the axis of the vibrator, it is possible to cut at right angles or diagonally.

Furthermore, the shaft, which is supported by a pin across the end of the arm, is inserted into the vibrator of the rotating shaft. In addition, since the shaft is fixed to the vibrator by sliding it, the distance between the arm and the vibrator can be adjusted according to the diameter of the pipe. In addition, two or more short tubes are pivotally supported at the tip of the arm, and the slide shaft is passed through the short tubes.
The end of the slide shaft is attached to and detached from the connecting plate via a pin, and a detachable spring is installed between arm 1 and the connecting plate, so that the tip of the slide shaft and the rotor can be attached to the arm. It can be located inside or outside the swirl path.
Therefore, when the diameter of the vibrator becomes large, it is possible to direct the tip of the nozzle toward the inner circumference of the vibrator for fusing.

Further, since the direction of the tip can be changed at a predetermined angle, after cutting the vibrator, the angle of the tip can be changed and the arm can be rotated again to cut the tip by cutting the tip to form a groove.

Note that the distance between the crater and the vibrator can be kept constant by the rotor that contacts the outer periphery of the vibrator.

[Brief explanation of the drawing]

The drawings show an embodiment of the invention; FIG. 1 is a front view, FIG. 2 is a partially cutaway enlarged front view showing the attachment of an annular plate, and FIG.
Figure 3 is an enlarged front view showing the installation of the crater, Figure 4 is an enlarged vertical side view showing the short pipe and slide shaft, Figure 5 is a vertical side view of the installation part of the crater, Figures 6 and 7 are An enlarged longitudinal front view of the contact area between the rotor and the annular plate, Fig. 8 is an enlarged front view showing diagonal cutting, Fig. 9 is a front view showing fusing from the inner periphery of the vibrator, and Fig. 10 shows fusing of the groove. It is a longitudinal enlarged front view. A... Vibrator, 1... Rotating shaft, 2... Plate-shaped body, 3
... Vibrator, 4... Pin, 5... Shaft, 6... Stopper, 7... Arm, 8... Zen, 9... Plate-shaped body, 1
0... Short pipe, 11... Pin, 12... Slide shaft, 13... Connecting plate, 14... Pin, 15... Crater,
19... Arc-shaped groove, 20... Long hole, 24... Rotor, 25... Spring, 26... Parallel material, 27... Zen,
28... Rotor, 29... Annular plate.

Claims (1)

[Claims] 1. A rotating shaft that rotates at a low speed, a pair of pipes that are arranged before and after the tip of this rotating shaft, and whose axes are aligned with each other and supported by pins, and a shaft that is inserted through this pipe,
In order to be able to adjust the protruding length of this shaft, there is a stop that fixes the shaft to the pipe, and the ends of the two arms intersect with the tip of the shaft, so that the intersection of the rotating shaft and the pipe is at right angles. In this case, a pin supporting the intersection of the arm and the shaft so that the intersection of the shaft and the arm is at a right angle, two or more short tubes with their ends crossed at the tips of both arms, and the short tubes. A pin that supports the intersection of the arm and the short tube by paralleling the axis of the arm and the axis of the pipe, a slide shaft that is inserted into each short tube and can be freely inserted and removed, and a pin that can be freely angled at the tip of one slide shaft. The crater is supported so that it can be changed, the rotor provided at the tip of the remaining slide shaft, the removable pin that connects the end of each slide shaft to the connecting plate, and the link between the arm and the connecting plate. A removable spring that is tensioned,
In addition, while crossing the tips at both ends of both pipes,
A parallel piece placed parallel to the rotating shaft at the same distance, a pin that supports the intersection of the parallel piece and the pipe, a rotor installed at the end of the parallel piece, and a piece placed on the outside of the rotating shaft on the front side of the pipe. While keeping the rotor of the parallel material in contact with the plate surface,
A pipe cutting device comprising an annular plate that can freely change the angle of the plate surface using a fulcrum that coincides with the axis of a rotating shaft.