JP2001205515A - Cutting device for pipe member or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutting device for a pipe member or the like in which form of a cut end surface of the pipe member or the like is not crushed to be flat when it is cut, and in which the diameter of the pipe member or the like to be cut is not limited but generality is provided. SOLUTION: This cutting device is composed of a fixed blade body 1 provided with a cutting tip 11 formed roughly in a V-form, and installed on the fixed side of the cutting device to which a pipe member 3 to be cut is fed, and a movable blade body 2 provided with a cutting tip 21 formed roughly in a reverse V-form, and installed on the drive side of the cutting device to slide in contact with the fixed blade body 1 while moving.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting device for a pipe member or the like, and more particularly to a pipe member or a wire rod (hereinafter referred to as "pipe member or the like") using a fixed blade and a movable blade. The present invention relates to a versatile cutting device for pipe members and the like, in which the shape of the cut end surface of the pipe member or the like is not flattened when cut, and the diameter of the pipe member or the like to be cut is not limited. It is.

2. Description of the Related Art Conventionally, composite pipes and wires having a synthetic resin film formed on the surface of a pipe member, particularly a metal pipe or a metal pipe (including a pipe formed by rolling a strip-shaped metal plate in this specification). In particular, when cutting a metal wire or a composite wire having a synthetic resin film formed on the surface of the metal wire, a method of cutting the pipe members or the like one by one with a metal saw or a peripheral surface of the pipe members or the like using a special cutting device. For example, a method of forming a kerf and cutting is used.

[0003] However, when a special cutting device that forms a kerf on the peripheral surface of a metal saw or a pipe member is used for cutting the pipe member or the like, it takes time to cut the pipe member or the like.
In particular, in the production process of pipe members and the like, there is a problem that the production speed of the pipe members and the like is regulated by the time required for cutting the pipe members and the like, which hinders the improvement of the production efficiency of the pipe members and the like.

[0004] In order to cope with this, there has been proposed a method of cutting a pipe member or the like so as to shear it using a fixed blade body and a movable blade body. An example is shown in FIG. This cutting device forms a circular hole 16 through which a pipe member 30 to be cut is inserted at the center, and the periphery of the hole 16 is cut by the cutting blade 1.
5 and a semicircular concave portion 26 which is disposed so as to move while being in sliding contact with the fixed blade body 10 and into which a pipe member 30 to be cut can enter. The movable blade body 20 has a peripheral edge of the concave portion 26 as a cutting blade 25, and is formed in the circular hole 16 of the fixed blade body 10.
With the pipe member 30 to be cut inserted, the movable blade 2
The pipe member 30 is moved while slidingly contacting the fixed blade body 10, so that the pipe member 30 is cut along the peripheral edge of the hole 16 formed in the movable blade body 20 and the peripheral edge of the concave portion 26 formed in the movable blade body 20. The cutting blade 25 cuts the sheet so as to be sheared.

[0005] By the way, this cutting device is a movable blade 20
The pipe member 30 is cut so as to be sheared by sliding the pipe member 30 in sliding contact with the fixed blade body 10. Therefore, the pipe member 30 can be cut in an extremely short time. In the production process 30, the movable blade 2
The pipe member 30 is cut by simply moving the cylinder member 0 while sliding on the fixed blade body 10 without lowering the production efficiency of the pipe member 30 and by accurately aligning the length of the pipe member 30. It has the advantage of being able to.

[0006]

However, although this cutting device has the above-mentioned advantages, it cuts the pipe member 30 so as to shear it.
For example, when the thickness of the metal pipe constituting the pipe member 30 is small, when the pipe member 30 is cut, the shape of the cut end face of the pipe member 30 is crushed into a flat shape. There is a problem that it becomes difficult not only to reduce the commercial value but also to fit the cap to the cut end of the pipe member 30.

In the case of this cutting device, the pipe member 3
To ensure that 0 can be cut,
It is necessary to set the inner diameter of the hole 16 formed in the fixed blade 10 and the inner diameter of the concave portion 26 formed in the movable blade 20 according to the outer diameter of the pipe member 30. For example, when the pipe members 30 having different outer diameters are alternately cut, the fixed blade 1
It is necessary to replace the movable blade 20 and the movable blade body 20, and the advantage that the cutting of the pipe member 30 included in the cutting device can be performed without lowering the production efficiency of the pipe member 30 cannot be fully utilized. .

The present invention has been made in view of the problems of a conventional cutting device for a pipe member, etc.
An object of the present invention is to provide a cutting device for a pipe member or the like having a cut end surface of a pipe member or the like so that the shape of the cut end surface is not crushed into a flat shape and the diameter of the pipe member or the like to be cut is not limited. I do.

[0009]

In order to achieve the above object, a cutting device for a pipe member or the like according to the present invention comprises a fixed blade having a substantially V-shaped cutting blade into which a pipe member or the like to be cut is fed. And a movable blade provided with a substantially inverted V-shaped cutting blade disposed so as to move while sliding on the fixed blade.

This cutting device such as a pipe member moves a movable blade having a substantially inverted V-shaped cutting blade while slidingly contacting a fixed blade having a substantially V-shaped cutting blade. By doing so, the pipe member or the like can be cut while the shape of the pipe member or the like is maintained by the cutting blade of the fixed blade body and the cutting blade of the movable blade body.

In this case, an acute-angled cutting edge can be formed at the tip of the cutting blade on the side where the fixed blade and / or the movable blade is in sliding contact.

Thus, the force of crushing the pipe member or the like applied to the pipe member or the like from the fixed blade body and / or the cutting blade of the cutting blade can be reduced, and the shape of the cut end surface of the pipe member or the like is flat. Can be more reliably prevented from being crushed.

Further, the trough of the cutting blade formed in a substantially V-shape and / or a substantially inverted V-shape may be formed in an arc shape.

Thus, the stroke required to move the movable blade while slidingly contacting the fixed blade in order to cut the pipe member or the like can be reduced.
The working efficiency can be improved, and the manufacture of the fixed blade and / or the movable blade is facilitated.

A polygonal hole through which a pipe member or the like to be cut is inserted is formed in the fixed blade body, and a cutting blade is formed at the periphery of the hole, and two adjacent sides of the periphery of the polygonal hole are formed. Can be selected and used as a cutting blade.

Thus, by rotating and rotating the fixed blade, the service life of the fixed blade can be extended.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a cutting device for a pipe member or the like according to the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show an embodiment of a cutting device for a pipe member or the like according to the present invention. The cutting device such as a pipe member is attached to a fixed side (not shown) of the cutting device.
A fixed blade 1 having a cutting blade 11 formed in a substantially V shape into which the pipe member 3 to be cut is fed, and an arbitrary driving mechanism (not shown) so as to move while sliding on the fixed blade 1. ), The movable blade body 2 having a cutting blade 21 formed in a substantially inverted V-shape, which is attached to a driving side (not shown) of the cutting device driven by the cutting device.

In this case, the fixed blade 1 is not particularly limited, but as shown in FIGS.
An equilateral triangular shape having a substantially cylindrical shape with a bottom and a pipe member 3 to be cut through the bottom (end face);
A hole 12 having a polygonal shape (a regular triangular shape in the present embodiment) such as a square shape is formed, and a cutting blade 1 is formed around the hole 12.
1 is formed, and two adjacent sides of the periphery of the hole 12 are selected and used as the cutting blade 11 formed in a substantially V shape. Thus, the cutting edge 11 is provided on the periphery of the polygonal hole 12.
Is formed, and two adjacent sides of the periphery of the hole 12 are selected and used as the cutting blade 11, so that the fixed blade 1 can be rotated and rotated, thereby extending the service life of the fixed blade 1. Can be done.

The effective diameter of the polygonal hole 12 formed at the bottom of the fixed blade 1, that is, the diameter D of the inscribed circle of the hole 12 is
As shown in FIG. 5, pipe members 3A and 3B having different outer diameters.
Is formed slightly larger than the outer diameter of the largest pipe member 3 which is supposed to be cut by a cutting device such as this pipe member so that the fixed blade body 1 does not need to be replaced even when cutting is performed alternately. To do.

Further, the cutting blade 11 of the fixed blade 1 has an acute-angled cutting edge 11a formed at the end on the side where the movable blade 2 slides. In this manner, by forming the sharp edge 11a at the tip of the cutting blade 11, the force for crushing the pipe member 3 applied to the pipe member 3 from the cutting blade 11 of the fixed blade body 1 can be reduced. In addition, by forming the sharp edge 11 a at the tip of the cutting blade 11, the tip of the cut pipe member 3 can be guided to the hole 12 and can be reliably inserted into the hole 12.

The valley 13 of the cutting blade 11 of the fixed blade 1 formed in a substantially V shape is formed in an arc shape. As described above, by forming the valley portion 13 of the cutting blade 11 in an arc shape, the pipe member 3 is cut.
The stroke required when moving the movable blade body 2 while slidingly contacting the fixed blade body 1 can be reduced,
Work efficiency can be improved, and the fixed blade 1
There is an advantage that the manufacture of the device is easy.

The fixed blade 1 is fixed to the fixed side (not shown) of the cutting device so that the fixed blade 1 can be accurately and stably fixed on the outer peripheral surface of the fixed blade 1. Position, in this embodiment, valley 13 of cutting blade 11
The mounting groove 14 is formed at a position opposed to the fixing blade 1 in parallel with the axis of the fixed blade 1.

Although not particularly limited, the movable blade 2 is formed in a thick plate shape as shown in FIGS. 1 and 3, and one end thereof, specifically, a cutting device. When attached to the drive side (not shown),
A cutting blade 21 formed in a substantially inverted V-shape is formed.

The effective width W of the cutting blade 21 formed in the movable blade 2 in a substantially inverted V-shape is such that the movable blade 2 does not need to be replaced even when pipe members having different outer diameters are alternately cut. The outer diameter of the pipe member 3 is set to be slightly larger than the maximum diameter of the pipe member 3 which is supposed to be cut by the cutting device such as the pipe member.

The movable blade 2 is also similar to the fixed blade 1,
The cutting blade 21 of the movable blade body 2 has an acute-angled cutting edge 21a formed at the end on the side that comes into sliding contact with the fixed blade body 1. As described above, the sharp edge 2 is attached to the tip of the cutting blade 21.
By forming 1a, the force of crushing the pipe member 3 applied to the pipe member 3 from the cutting blade 21 of the movable blade body 2 can be reduced.

The trough 23 of the cutting blade 21 of the movable blade 2 formed in a substantially inverted V-shape is formed in an arc shape. By forming the valley portion 23 of the cutting blade 21 in an arc shape in this manner, it is necessary to move the movable blade body 2 while slidingly contacting the fixed blade body 1 in order to cut the pipe member 3. There is an advantage that the stroke can be reduced, the working efficiency can be improved, and the manufacture of the movable blade 2 is facilitated.

Next, the process of cutting the pipe member by the pipe member cutting device will be described with reference to FIGS. 4 (A) and 4 (B).

For example, the pipe member 3 is adjusted in accordance with the production speed of the pipe member 3 in the production process of the pipe member 3.
Sequentially, they are fed into holes 12 formed in the fixed blade 1 (FIG. 4A). At this time, the movable blade 2 is at the raised standby position.

When the pipe member 3 protrudes from the fixed blade 1 by a predetermined length, a driving mechanism (not shown) drives a driving side (not shown) of the cutting device to which the movable blade 2 is attached. Then, the movable blade 2 at the raised standby position is lowered while slidingly contacting the fixed blade 1.
Thereby, the cutting blade 1 formed in the substantially V shape of the fixed blade body 1
The pipe member 3 is sandwiched between the cutting blade 21 and the movable blade body 2 formed in a substantially inverted V-shape (FIG. 4 (2)).

When the movable blade 2 further descends,
The cutting blade 11 formed in the substantially V shape of the fixed blade body 1 and the cutting blade 21 formed in the substantially inverted V shape of the movable blade body 2 form the pipe member 3.
And cutting starts (Fig. 4
(3)). At this time, the cutting blade 11 formed in the substantially V shape of the fixed blade body 1 and the cutting blade 21 formed in the substantially inverted V shape of the movable blade body 2 bite from all sides of the pipe member 3. The pipe member 3 can be cut while maintaining the shape of.

As described above, when the movable blade 2 further descends, the pipe member of the cutting blade 11 formed in the substantially V-shape of the fixed blade 1 and the cutting blade 21 formed in the substantially inverted V-shape of the movable blade 2 is formed. The amount of penetration into 3 further expanded (Fig. 4 (4)),
The pipe member 3 is completely cut (FIG. 4 (5)).

The apparatus for cutting a pipe member or the like according to the present invention has been described based on the embodiment.
It is not limited to the configuration described in the above embodiment,
For example, the fixed blade body is formed into a thick plate shape like the movable blade body, and is configured to include a cutting blade formed in a substantially V shape. Conversely, the movable blade body is formed like the fixed blade body. Formed in a substantially cylindrical shape with a bottom, a polygonal hole is formed at the bottom, and a cutting blade is provided around the periphery of this hole, etc.
The configuration can be appropriately changed without departing from the spirit of the invention. In addition, the cutting device for a pipe member or the like of the present invention, in addition to a metal pipe or a composite pipe having a synthetic resin film formed on the surface of the metal pipe, a wire, particularly, a metal wire or a synthetic resin film formed on the surface of the metal wire. It can also be applied to cutting of composite wires, and in particular, by using the cutting device for pipe members and the like of the present invention for cutting composite pipes and composite wires formed with a synthetic resin film, it is possible to cut metal tubes and metal wires. There is an advantage that peeling of the synthetic resin film, generation of cracks in the synthetic resin film, and the like can be prevented.

[0034]

According to the apparatus for cutting a pipe member or the like of the present invention, a movable blade body having a substantially inverted V-shaped cutting blade is provided.
By moving the fixed blade body provided with the substantially V-shaped cutting blade while slidingly contacting the fixed blade body, the cutting blade of the fixed blade body and the cutting blade of the movable blade body maintain the shape of a pipe member or the like. , Pipe members and the like can be cut. For this reason, the cutting of the pipe member or the like can be performed in a very short time. For example, in the production process of the pipe member or the like, the movable blade is slid on the fixed blade in accordance with the production speed of the pipe member or the like. While moving the pipe member, the pipe member can be cut without lowering the production efficiency of the pipe member, etc. Even when the thickness of the metal pipe constituting the member or the like is small, when the pipe member or the like is cut, the shape of the cut end surface of the pipe member or the like is not flattened, and the cut pipe member or the like is not cut. Product value can be increased. In addition, in the case of this cutting device, since the cutting blade of the fixed blade and the cutting blade of the movable blade are formed in a substantially V-shape or a substantially inverted V-shape, it is possible to cope with pipe members having different outer diameters. For this reason, for example, even when pipe members having different outer diameters are alternately cut, it is not necessary to replace the fixed blade body and the movable blade body. The advantage that the process can be performed without lowering the efficiency can be fully utilized.

Further, by forming an acute-angled cutting edge at the tip of the cutting blade on the side where the fixed blade and / or the movable blade comes into sliding contact, the fixed blade and / or the cutting blade of the cutting blade can be used to make a pipe member or the like. The force of crushing a pipe member or the like applied to the pipe member can be reduced, and the shape of the cut end surface of the pipe member or the like can be more reliably prevented from being crushed into a flat shape.

Further, by forming the trough of the cutting blade formed in a substantially V-shape and / or a substantially inverted V-shape in an arc shape, the movable blade can be cut into a fixed blade in order to cut a pipe member or the like. It is possible to reduce the stroke required for moving while sliding on the surface, improve the working efficiency, and facilitate the manufacture of the fixed blade and / or the movable blade.

Further, a polygonal hole through which a pipe member or the like to be cut is inserted is formed in the fixed blade body, and a cutting blade is formed at the periphery of the hole, and two adjacent sides of the periphery of the polygonal hole are formed. Is selected and used as a cutting blade, so that the fixed blade body is rotated and rotated, thereby extending the service life of the fixed blade body.

[Brief description of the drawings]

FIG. 1 shows an embodiment of a cutting device for a pipe member or the like according to the present invention, wherein (A) is a front view and (B) is a sectional view.

FIGS. 2A and 2B show a fixed blade body, wherein FIG. 2A is a front view and FIG.

3A and 3B show a movable blade body, wherein FIG. 3A is a front view and FIG. 3B is a bottom view.

4A and 4B show a cutting process of a pipe member and the like, wherein FIG. 4A is a front view and FIG.

FIG. 5 is an explanatory diagram showing a relationship between a fixed blade body and pipe members having different outer diameters.

FIG. 6 shows a conventional cutting device for a pipe member or the like, and (A)
Is a front view, and (B) is a sectional view.

[Explanation of symbols]

 Reference Signs List 1 fixed blade 11 cutting blade 11a blade tip 12 hole 13 valley 14 mounting groove 2 movable blade 21 cutting blade 21a blade tip 23 valley 3 pipe member D effective diameter of hole W effective width of cutting blade

Claims (4)

[Claims] 1. A substantially fixed V-shaped fixed blade body, into which a pipe member or the like to be cut is fed, and a substantially fixed V-shaped cutting blade disposed so as to move while sliding on the fixed blade body. A cutting device for a pipe member or the like, comprising a movable blade having a cutting blade formed in an inverted V-shape. 2. A cutting device for a pipe member or the like according to claim 1, wherein an acute-angled cutting edge is formed at the tip of the cutting blade on the side of the fixed blade and / or the movable blade that slides. 3. The cutting device for a pipe member or the like according to claim 1, wherein the valley of the cutting blade formed in a substantially V shape and / or a substantially inverted V shape is formed in an arc shape. 4. A polygonal hole through which a pipe member or the like to be cut is inserted is formed in a fixed blade body, and a cutting blade is formed at the periphery of the hole, and two sides adjacent to the periphery of the polygonal hole. 4. The cutting device for a pipe member according to claim 1, wherein the cutting device is selected and used as a cutting blade.