JP2944037B1 - Pipe end processing machine - Google Patents

Abstract

Abstract: PROBLEM TO BE SOLVED: To cut a pipe end face into various types such as a pipe diameter and a wall thickness, and to process a pipe end face into a variety of shapes by changing a pipe diameter and a wall thickness. It is common to use different matching machines, and the driving force requires a hydraulic device and a hose connecting it, so the machine is inevitably a large and heavy machine, so the installation space is large and expensive. There was a problem of becoming a machine. SOLUTION: A fixing portion for fixing the pipe when cutting the pipe end face, and fixing the inside of the pipe with a female screw pipe 13 having a spacer 14 using a bevel gear 10, 11 transmission mechanism, and a pipe end face. The cutting portion of the cutting blade 6 for cutting the workpiece is fixed to the feed shaft 20 via the fitting plate 19 and the spring 15, and the fixed portion and the large spur gear 5 into which the cutting portion is fixed are fixed from the motor. The end faces of the pipes can be cut by the large and small gear mechanisms 5 and 6 by driving.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pipe end face processing machine, and more particularly, to a pipe end face processing method in which a welded portion of a seam at the time of connection between pipes is neat and improved in strength. Pipe processing machine.

[0002]

2. Description of the Related Art Generally, when welding and connecting pipes at the time of pipe piping work, if the pipe end face is not machined, the welded portion will swell up, so that the pipe end face is generally chamfered and then welded. It is a target. However, the current situation is that different processing machines are used according to the difference in diameter and wall thickness of various pipes.

In order to cope with various types of pipes, such as diameter and wall thickness, and to process pipe end faces into various shapes, at present, a machine provided with a cutter blade on the circumference of a pipe is a pipe. Machines that perform cutting along the circumference of a circle (for example, referred to as a hand beller) or machines that fix a pipe and cut along a pipe end face according to the pipe diameter are mainly used. It is a situation that is. However, the driving force of this conventional processing machine is generally of a hydraulic type, which requires a hydraulic device and a hydraulic hose connected to the hydraulic device, which inevitably results in a large and heavy machine. -The cost of the machine is large and there is a problem that it becomes an expensive machine.

[0004]

In the above-mentioned conventional method, a pipe processing machine, a hydraulic device for driving the pipe processing machine and a hose connecting the pipe processing machine are required, and a method for fixing a pipe to be processed is also spiral. Since the method of feeding and fixing the above device into a pipe is common, the machine has become heavy and large. Therefore, at present, there is a strong demand for a pipe end face processing machine capable of compactly storing the processing machine and capable of processing various types of pipes.

[0005]

DISCLOSURE OF THE INVENTION The present invention has been made in response to the above-mentioned problems, and its gist is to provide a method for processing a pipe end face, such as chamfering a steel pipe pipe, on a frame. A mechanism to pinch the pipe placed on the roller with a roller chain, etc., and the pipe is fixed from the inside of the pipe by a female threaded pipe with a spacer from the inside of the pipe by turning the threaded rod by the bevel gear transmission mechanism. A large spur gear provided with a cutting blade for cutting the pipe end face and a large spur gear is fitted and fixed to the feed shaft via a spring between the fitting plate and the large spur gear, and driven by a motor to transmit the large and small spur gear. The present invention relates to a pipe end face processing machine characterized in that a pipe end face can be cut by a mechanism.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a frame.
The small spur gear 4 is fixed to the rotating shaft of the. In FIG. 2, reference numeral 18 denotes a fixing plate provided with a circular recess 24 in the center, and cutouts 25 are provided at three places radially outward from the circular recess 24 of the fixing plate 18. The large bevel gear 11 is fixed to the center of the circular recess 24 of the fixing plate 18. Reference numeral 13 denotes a T-type female screw tube, and a spacer 14 is further detachably mounted on the upper portion of the female screw tube 13. A threaded rod 12 integrally provided at the lower end with a small bevel gear 10 meshing with a large bevel gear 11 is screwed into a female screw tube 13. Then, the female screw tube 13 thus configured is loosely fitted into the notch 25 of the fixing plate 18. At this time, the small bevel gear 10
Is of course meshed with the bevel gear 11.

Reference numeral 19 denotes a fitting plate, on which the receiving gear 9 is fixed in the central recess 26. The receiving gear 9 meshes with the small bevel gear 10 and is integrally mounted on the fixed plate 18. Reference numeral 20 denotes a feed shaft.
9 is fixed. And the large spur gear 5
And is fixed by the front plate 21. A spring 15 is interposed between the fitting plate 19 integrated with the fixed plate 18 and the large spur gear 5. 6 is a cutting blade,
This cutting blade 6 is located on the right side (surface on which the pipe is cut) of the large spur gear 5 at a position corresponding to the size of the pipe diameter.
7 are provided so that the cutting blades 6 can be attached appropriately, and are attached to the outer peripheral portion of the large spur gear 5 at two places. 22
Is a color to which the grip 8 is attached.
2 is formed integrally with the front plate 21. Further, the front end of the handle shaft 7 passes through the collar 22, the front plate 21, the large spur gear 5, and the feed shaft 20, and the fitting plate 1
9 the receiving gear 9 and the bevel gear 1 of the fixing plate 18
It is inserted in 1.

Therefore, a pipe 23 for processing an end face is mounted on a frame 1 and a plurality of roller chains 2 or a plurality of roller chains 2 are provided.
The frame is clamped on the frame 1 with a hook or the like. At this time, as shown in FIG. 4, the pipe receiving base 16 is slid left and right depending on the pipe diameter, and the center of the pipe 23 is fixed at the same position as the rotation center of the large spur gear 5. At the time of processing the end face of the pipe, the large spur gear 5, which is detachable and is connected to each other around the rotation axis of the large spur gear 5 having both the cutting part and the fixed part, is integrally assembled so as to mesh with the small spur gear 4.

Next, a method of fixing the pipe from the inside during pipe cutting will be described. The handle shaft 7 is inserted into the collar 22, and the collar 22, the front plate 21, the large spur gear 5, and the feed shaft 20 are respectively inserted. , Fitting plate 19
Through the receiving gear 9, and mesh with the large bevel gear 11 fixed to the fixed plate 18.

Then, when the handle shaft 7 is rotated to engage the receiving gear 9 and the orthogonal threaded rod 12 is rotated, the female screw pipe 13 is raised, and the spacer 14 attached to the female screw pipe 13 is moved from the inside of the pipe. It extends radially upward, and firmly fixes the inner peripheral surface of the pipe by the pressure of the spacer 14 as shown in FIG. At this time, it is possible to cope with various pipe diameters by attaching and detaching the spacer 14 at the upper end portion of the female screw tube 13 for fixing the pipe 23 with a bolt.

Next, the method of cutting the pipe will be described. When the pipe 23 is fixed at the fixing portion, the handle shaft 7 is pulled out from the bevel gear 11 and the grip 8 is turned to thereby rotate the large spur gear 5 and the fitting plate 19. The intermediate spring 15 is expanded and contracted, and the cutting blade 6 for cutting the pipe end face attached to the large spur gear 5 is adjusted and fixed according to the processing shape of the pipe end face. At this time, the expansion and contraction of the spring 15 is evenly applied vertically by the rotation of the grip 8 from the large spur gear 5, so that the center of the pipe does not shift. In addition, as shown in FIG. 5, the cutting blade 6 that performs cutting according to the pipe diameter can be adapted to various pipe diameters by replacing it with the mounting hole 19 provided in the large spur gear 5. The driving force of the motor 3 is transmitted to the large spur gear 5 via the small spur gear 4, the large spur gear 5 rotates, and the cutting blade 6 attached to the large spur gear 5 rotates to cut the pipe end face. .

[0012]

According to the present invention, a female screw pipe 1 for fixing a pipe so that one pipe can cope with a variety of pipe diameters than before.
By attaching and detaching the spacer 14 with bolts at the upper portion of the pipe 3, it is possible to cope with a wide pipe diameter from a thin pipe to a thick pipe.

The pipe fixing portion engages the large bevel gear 10, the small bevel gear 11, and the threaded rod 12, and the female screw pipe 13 extends radially from the inside of the pipe just by turning the handle shaft 7, so that the pipe 23 is shaped. The cutting blade 6 can be firmly fixed by the serrer 14, and the cutting blade 6 can be easily adjusted to the pipe end face position perpendicular to the cutting surface of the pipe by turning the grip 8 and expanding and contracting the spring 15, and the fixing part of the processing pipe is Since the rotating portion of the large spur gear 5 is coaxially connected to the cutting portion of the pipe end face, the cutting can be performed stably without the center of the pipe being shifted from the rotating center of the cutting blade 6 of the large spur gear 5.

Since a hydraulic device or a hydraulic hose is not required by replacing the hydraulic device, which is a conventional driving method, with a motor, the power supply corresponds to 100V or 200V. In addition, the large spur gear and the cutting blade are integrated, simplifying the structure of the machine, making it compact and lightweight, enabling on-site work-in-place processing that was previously impossible.

[Brief description of the drawings]

FIG. 1 is a front view showing a cutting state of an end face of a pipe according to the present invention.

FIG. 2 is an enlarged longitudinal sectional view of a main part of the first embodiment of the present invention.

FIG. 3 is an enlarged right side view of a female screw pipe portion of the pipe fixing portion of the present invention.

FIG. 4 is an enlarged left side view of the pipe support of the present invention.

FIG. 5 is a side view of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Frame 2 Roller chain 3 Motor 4 Small spur gear 5 Large spur gear 6 Cutting blade 7 Handle shaft 8 Grip 9 Receiving gear 10 Small bevel gear 11 Large bevel gear 12 Screw rod 13 Female thread tube 14 −Spring 15 Spring 16 Pipe holder 17 Mounting hole 18 Fixing plate 19 Fitting plate 20 Feed shaft 21 Front plate 22 Color 23 Pipe 24 Circular recess 25 Notch 26 Center recess

Claims (1)

(57) [Claims] 1. A mechanism for clamping a pipe placed on a frame by a roller chain or the like when processing a pipe end face such as chamfering of a steel pipe, and a bevel gear transmission of the pipe. A mechanism for fixing the pipe from the inside of the pipe to a female screw pipe having a spacer by rotating the threaded rod, and a large spur gear provided with a cutting blade for cutting the pipe end face. A pipe end face processing machine characterized in that it is fitted into a feed shaft via a spring therebetween, and is fixed so that a large spur gear transmission mechanism can feed a large spur gear to cut a pipe end face by driving from a motor. .