JPS61209814A - Tubular member cutting device - Google Patents

Abstract

PURPOSE:To automatize the operation of cutting various tubular members in order on one line by revolving a cutting edge which is retractively mounted on a cutting edge mounting mechanism, around the outer periphery of said tubular member. CONSTITUTION:When cutting long-size covered copper pipes each at a defined length, a rotary cutting edge 53 of a rotary member is removed and only the shearing cutting edge 36 of a reciprocatingly moving member is mounted, a shearing hydraulic cylinder 35 is operated being interlocked with the holding of the covered copper pipe, and the reciprocatingly moving member 33 is projected to shear the pipe between the cutting edges 36. This operation is repeated to cut the pipes at a defined length one after another. When separating a long pipe which is connected by a connecting member by cutting only the covering layer of the mutually connected part, the cutting tool 36 is removed and the cutting tool 53 is mounted, a rotary board 43 is rotated several times around the covered copper pipe via a rack 46, pinion 45, and screw part 44, to cut the covered layer between the rotary cutting edges 53.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Application of Cmm Field of the Invention The present invention relates to a tubular member cutting device suitable for cutting steel pipes and the like having a coating layer formed on the outer periphery thereof.

[Prior art and its problems]

For example, when manufacturing heat-insulating coated steel pipes for use in air-conditioning equipment, etc., a heat-insulating coat made of synthetic resin is first applied continuously around the outer periphery of the long steel pipe, primarily to maintain uniform quality of the above-mentioned coating layer. In other words, for long steel pipes of several thousand meters long, such as those wound on reels, etc. In addition, as shown in Fig. 3, for the steel pipe 1.2 manufactured as a straight pipe in units of several meters/torre, insertion portions 4°4 are formed at both ends of the central vM3. The heat insulating coating layer 6t-
is forming.

Then, among the steel pipes on which the coating layer has been formed in this way, the former long ones are cut into predetermined lengths. 7
? : For the latter type of connection, only the coating layer 6 on the outer periphery of the central part 3 of the connector 5 is cut over the entire circumference, and the insertion portions 4.4 of the connector 5 are made of steel pipes 1.2, respectively. Each straight pipe is separated by pulling it out from the end of the pipe.

By the way, conventionally, when cutting the above-mentioned long steel pipe into predetermined lengths, there are nine pairs of cutting blades arranged oppositely on both sides of the above-mentioned steel pipe, and the above-mentioned copper pipe is cut by shearing by these cutting blades. A cutting machine is used to cut.

However, the above-mentioned conventional cutting machine cannot be used when cutting only the coating layer 6 on the outer periphery of the VC% connection true central portion 3, as in the latter case. Therefore,
In such a case, the operator should use a special cutting jig to cut only the coating layer 6 around the outer periphery of the central portion 3 of the connector 5. Therefore, in the past, there was a problem in that a line for cutting the long steel pipe and a line for cutting off the connected straight pipe had to be provided separately. In addition, the work of cutting and separating the straight pipes is inefficient, requiring a large number of man-hours and requiring a large amount of man-hours, and there has been a particular desire to save labor and automate this type of work.

[Purpose of the invention]

This invention was made in view of the above circumstances, and can handle the cutting of various types of tubular members. Therefore, it is possible to sequentially cut various types of tubular members on the same line, and it is also possible to automate this type of work. It is an object of the present invention to provide a tubular member cutting device that can also achieve the following.

[Structure of the invention]

The tubular member cutting device of the present invention includes a holding mechanism for holding the tubular member, and a holding mechanism that is held by the holding mechanism and is thrown to the side of the tubular member via a drive mechanism so as to be freely forward and backward toward the tubular member, a cutting blade attachment mechanism in which a cutting blade is attached to the tip of the tubular member to cut it by contacting the tubular member; and a rotation drive for rotating the cutting blade attached to the cutting blade attachment mechanism around the outer circumference of the tubular member. It is equipped with a mechanism.

[Example of real plums]

Fig.
This shows an example of a cutting device.

In FIG. 2, the tubular member cutting device of this example is arranged in sequence along a tubular member transfer line 10 [1 clamp l 1. A holding mechanism 14 consisting of an IIE2 clamp 12 and a third clamp 13vs, and the first clamp 11
and a cutting machine 15 disposed between the clamp 12 and the clamp 12.

Here, a transfer line 10 is provided at the center of the first clamp 11.1E2 clamp and the third clamp 13, respectively.
The openings 11a, 12 through which the tubular members are carried are inserted.
a, 13a are formed.

Each of these clamps 11. I2. I3 9 mouth part 1
1a, 12a, and 13a, a pair of gripping members 16.16.17.17. are provided on both sides of the tubular member to be inserted so as to be movable forward and backward with respect to the tubular member and grip the tubular member.
18.18 is installed. Furthermore, these gripping members 16, 16, 17, 17, 18, 18 are connected to rack 19, 20, 21 and gear 22, 23, 24, respectively.
via hydraulic cylinders 25, 26, 27. As a result, each gripping member 16, 17, 18 is driven by the reciprocating movement of the hydraulic cylinder 25, 26, 27 in the direction of gripping the tubular member or in the direction of releasing the grip, as shown by the arrow in Figure 1. It is now possible to do so. Furthermore, hydraulic cylinders 28 and 29 are attached to the second clamp 12 and the IE3 clamp 13, respectively, for reciprocating the tubular member along the transfer line 1 (HC).

9. As shown in FIGS. 1 and 2, the cutting machine 15 is constructed by incorporating a cutting blade attachment mechanism 31 and a rotational drive mechanism 32 into a main body 30.

The cutting blade attachment mechanism 31 further includes a pair of reciprocating members 33.33 and a rotating member 34.34. The reciprocating member 33° 33 is connected to the transfer line Jo.
(t) They are arranged horizontally opposite to each other on both sides of the tubular member to be transferred, and are movable forward and backward toward the tubular member by hydraulic cylinder C drive mechanisms 135 and 35 connected to their base ends, respectively. . These reciprocating members 33°3
A cutting blade 36, 36 with a notch in the shape of a letter is removably provided at the tip of the reciprocating member 33. Convexes W37 and 37 are formed along the sides.Meanwhile, on one side of the open side of the main body 30, there is a disk-shaped end plate 3 that closes this and has an insertion hole 3B for a tubular member formed in the center.
9 is fixed. A recess 41.degree. 41 having a groove 40.40 that engages with the convex portion 37.37 of the reciprocating member 33.33 is formed in the inner surface of the end plate 39 in the horizontal direction. As a result, the reciprocating member 33.33 moves its convex portion 37°37? The groove portions 40, 4
0 VC4a together<C1 recess 41 of the above 111 face plate 39
:, It is said that it can be moved freely within 41.

On the other hand, the rotary members 34, 34 are held by the rotary drive mechanism 32 in such a manner that they are parallel to each other along the reciprocating members 33, 33, respectively. here,
The rotary drive mechanism 32 is rotatably provided in the main body 30 with its axis aligned with the transfer line IO, and is attached to a great circle rotating shaft 42 and an end face of the cutting blade attachment mechanism 31 of the rotary shaft 42. A large opening rotating plate 43 and the rotating shaft 4 are integrally formed.
The pinion 4 screws with the threaded portion 44 formed around the outer periphery of the pinion 4.
5, and a rack 46 for rotating the binion 45.6, and at one end of the rack 46,
A hydraulic cylinder 47 that reciprocates this rack 46 and rotates the rotating shaft 42 is connected thereto. In addition, there is a grating at the center of the rotating shaft 42 and the rotating plate 43. An insertion hole 4 for inserting a tubular member along the feeding in 10
8 is perforated. Furthermore, the end surface 4 of the rotary plate 43
9, water under normal stop condition,,yp,! and one half of the rotating member 34.34.

a guide frame each slidably held toward the same; -
150... is provided, and the above-mentioned guide frame.

The rotary members 34 and 34 are slidably inserted between the two members 50 and 50, respectively. In addition, these rotating members 34.3
Between the ends of the reciprocating member 33.3311 of No. 4, a cam follower 51.51 whose leading end is formed in the shape of a small diameter disk is formed, and on the other hand, the reciprocating member 33. A groove-shaped cam follower receiver 52.52 is formed to guide the cam follower 51.51. Thereby, the rotating member 34.34 is provided along the reciprocating member 33.33 with each cam follower 51.51 inserted into the cam follower receiver 52.52. Rotating cutting blades 53, 53 are removably provided at the tip ends of the rotating members 34, 34, respectively. The tip of this rotary cutting blade 53.53 is notched inwardly in the shape of a letter, and the curvature of the central portion of this notch is approximately equal to the radius of the tubular member to be cut. . The reciprocating member 33. The reciprocating member 33.33 is provided on the inner OR surface of the end plate 39 where the reciprocating member 33 is slidably provided.
3 is a force guide groove 5 in the inner circumferential shape of the cam follower holder 52, which is continuous with the cam follower receiver 52 and 52 at a position protruding from the tubular member.
4.54 is formed. , and the reference numeral 55 in FIG.
3 shows the iron piece detection ls for detecting the nine-iron connector shown in FIG.

The operation of the above-mentioned tubular member cutting device made of cyanide will now be described.

First, a long coated steel pipe without a connection part is used as a tubular member.
When cutting every fixed length, the rotating cutting blade 53 of the rotating member 34 is removed and only the cutting blade 36 of the reciprocating member 33 is attached.

In this case, the feeding speed of the coated steel pipe sent along the transfer line 1G and the clamps 11, 12.
In synchronization with the operation of the hydraulic cylinders 25.26 and 27 of 13, the gripping member 16.1 holds the coated steel pipe every predetermined length.
7. Grip at 18.

Next, in conjunction with the gripping of the coated steel pipe by these gripping members 16, 17, 18, the hydraulic cylinder 35.3
5t - During operation, the reciprocating members 33 and 33 are made to protrude toward the coated steel pipe, so that the cutting blades 3 are separated from each other.
The coated steel pipe is sheared and cut at 6.36 mm. By repeating the above operation, the coated steel pipe is successively cut into predetermined lengths.

Next, the nine long straight steel pipes 1.2 connected by the nine connecting layers 5 shown in FIG.
In the case of cutting the reciprocating members 33 and separating them, the drilling cutting blades 36 of each of the reciprocating members 33 are removed, and the rotating cutting blades 53 are attached to each of the rotating members 34 instead. next,
In this case, the feeding speed of the incoming coated steel pipe or the detection signal of the connecting tool 5 of the iron palanquin by the iron piece detector 55, and the first
and II3 clamp 11, 1'3 hydraulic cylinder 25
When the connecting tool 51 is positioned between the rotating cutting blades 53, 53 of the cutting machine 15, the gripping members 16, 18 grip the coated steel pipe in synchronization with the operation of the cutting machine 15. At approximately the same time, the new moon hydraulic cylinders 35 and 351 are operated to cause the reciprocating member 33° 331 to protrude. Then, the reciprocating member 3 is moved through the cam hollow 751°51'.
The rotating members 34 and 34 connected to the guide frames 50 and 3.33 also protrude integrally toward the coated steel pipe along the guide frame 50, and grip the coated steel pipe with their rotating cutting blades 53 and 53. . Next, in this state, the hydraulic cylinder 47 is operated to rotate the rotary plate 43 one to several revolutions around the mouth of the coated steel pipe via the rank 46, vinyl tonne 45, and screw portion 44. Then, the rotating members 34, 34 also rotate along the respective cam followers 51, 51 within the cam follower guide grooves 54, 54 of the end plate 39, thereby causing the rotational cutting blades 53, 53 to rotate. The coating layer 6 on the outer periphery of the connector 5 of the coated steel pipe is cut.

Next, after setting the guide frame 50 of the rotary plate 43 to a horizontal position, the hydraulic cylinders 35, 35! The rotating cutting blade 53.531- is actuated via the reciprocating member 33.33.
make them retreat. Next, of the first and lE3 clamps 11.13 that grip the coated steel pipe, the third clamp 13
is moved to the left in FIG. 2 by the hydraulic cylinder 29. Then, one of the steel pipes 1.2 connected by the connector 5 in FIG. 1 is pulled out from the insertion part 4 of the connector 5 and separated.

Next, the above-mentioned 4i which is exposed from the end of the other copper pipe 2 which is gripped by the above-mentioned first clamp 11 and remains open! The insertion part 4 of the fitting 5 is gripped by the gripping member 17.17 of the second clamp 12. Next, the hydraulic cylinder 28 is actuated to move the two clamps 12 km2 to the left in the figure. As a result, the *a tool 5 held by the gripping member 17.17 of the fitting 2 clamp 12 is pulled out of the other steel pipe 2:P, etc., and the two connected by the connecting tool 5 are The separation of the steel pipe 1.2 is completed, and the separated copper pipe 1 is sent to the left in the figure.

By sequentially repeating the above series of operations, the coated steel pipes are separated one after another at their mutual connection parts (1). The t-1 machine can perform cutting into predetermined lengths by shearing, and separation by cutting only the coating layer on the outer periphery of the connector of the coated steel pipe connected by the connector 5.

Therefore, the various types of coated steel pipes can be cut and separated using only one transfer line, which is advantageous in terms of space. What's more, it can be processed continuously and automatically without the hassle of manpower as in the past.
Therefore, it is possible to greatly save labor and streamline this type of work.

In addition, in the above embodiment, the cutting blade attachment mechanism 31
It is made reciprocatingly movable by a hydraulic cylinder 35 for suspension,
A reciprocating member 33 is connected to the reciprocating member 33 and has a cutting blade 36 attached thereto, and a rotary cutting blade 53 is attached to the reciprocating member 33 and rotates as well. It is configured to be rotatable relative to the reciprocating member 33 by a drive mechanism 32, and a great circle rotating member 34, but is not limited to this; A common cutting blade for both shearing and rotation may be attached to the tip of the cutting blade, and the restraining hydraulic cylinder and the cutting blade attachment member may be provided integrally and rotatably by a rotational drive mechanism.

〔Effect of the invention〕

As explained above, the tubular member cutting device of the present invention includes a holding mechanism that holds a tubular member, and a drive mechanism that advances and retreats toward the tubular member to the side of the tubular member held by the holding mechanism. a cutting blade attachment mechanism that is freely provided and has a cutting blade attached to the tip thereof that comes into contact with the tubular member to cut it; and a cutting blade attached to the cutting blade attachment mechanism that extends around the outer periphery of the tubular member. It is equipped with a rotation drive mechanism for rotating. Therefore, according to this tubular member cutting device, various types of tubular members can be cut continuously and automatically by shearing or rotating on the same transfer line without requiring any manual labor. This type of cutting work can be greatly streamlined.

[Brief explanation of drawings]

1 and 2 show an embodiment of the tubular member cutting device of the present invention, FIG. 1 is a perspective view showing the overall schematic structure, and FIG. 2 is an exploded perspective view of the main parts of the cutting machine. FIG. 3 is a cross-sectional view of a connecting portion of a round steel pipe connected using a connecting tool among the steel pipes cut by the above-mentioned apparatus. 1.2...Steel pipe 5...Connector 6...Coating layer, 10...Transfer line,
11.12゜13... Clamp, 14 Old...
Retained 1111, 15... Cutting machine% 31/Old/
・Cutting blade attachment mechanism, 32・Old...Rotary drive mechanism, 33・
... Reciprocating member, 34 ... Rotating member,
35...... Hydraulic cylinder C @ moving mechanism) 3
6... Cutting blade C-senshingetsu), 39...
End plate, 43... Rotating plate, 44... Screw part, 45... Pinion, 46 Old... Rack, 4
7...Hydraulic cylinder, 51...Cam follower, 52...Cam follower holder, 53...
・Cutting blade (for rotation), 54...camshaft guide groove.

Claims (1)

[Claims] A holding mechanism that holds the tubular member; and a holding mechanism that is provided on the side of the tubular member held by the holding mechanism so as to be movable forward and backward toward the tubular member via a drive mechanism, and has a distal end that abuts the tubular member. A cutting blade attachment mechanism to which a cutting blade for cutting the tubular member is attached, and a rotational drive mechanism for rotating the cutting blade attached to the cutting blade attachment mechanism around the outer periphery of the tubular member. A tubular member cutting device.