KR20120005930U - Apparatus for press-connecting pipes - Google Patents

Abstract

The present invention relates to a pipe crimping fastener for pressing both outer pipes by pressurizing an outer circumferential surface of a large diameter pipe into which a small diameter pipe is inserted.
The present invention has a center dice provided with a circular arc-shaped jaw; A pair of side dies whose one end is hinged to an end of the center die, an arc-shaped jaw is provided therein, and a tooth groove is formed at the other end; And a slide die elastically supported by a spring at an end of the side die and configured to slide relative to the side die and having an arc of a circular arc formed therein.

Description

Pipe Crimp Fasteners {Apparatus for press-connecting pipes}

The present invention relates to a pipe crimping fastener for pressing both outer pipes by pressurizing an outer circumferential surface of a large diameter pipe into which a small diameter pipe is inserted.

In general, when connecting a pipe for outdoor and indoor plumbing of metal, a small diameter pipe is inserted into a large diameter pipe and then welded to the insertion part. However, in many cases, a thin pipe is used for cost reduction. Connecting work of the pipe by welding has a problem that the economic efficiency is greatly reduced because too many failures.

In addition, the classic fastening method for fastening both pipes using threaded connection pipes is not easy to process the screws for fastening the connection pipes to thin metal pipes, and the joints can be easily deformed during the fastening process. Given that, it was difficult to apply realistically.

Accordingly, many crimping fastening methods and crimping fastening tools for fastening both pipes by crimping the outer circumferential surface of a large diameter pipe into which a small diameter pipe is inserted have been proposed. The metal pipe can be fastened more easily and simply.

Pipe compression fastening device shown in Figure 1 is disclosed in the Republic of Korea Patent No. 110-578450, the first and second fixed blocks (10, 12), and the first and second fixed blocks (10, 12) rotated mutually A plurality of chain links 14 which are connected to each other, and a plurality of circular arc blocks which are coupled to the inner surface of each chain link 14 by a coupling means, and an arcuate groove is formed on the inner circumferential surface thereof and contacts the outer circumferential surface of the pipe to be crimped ( 16).

In addition, the pipe crimp fastening device is connected to the connection link 15 for rotatably connecting the adjacent circular arc blocks (16), and the plurality of circular arc blocks 16 in the direction in which the crimped to the outer peripheral surface of the pipe or to release the crimp And operating means for operating the first and second fixing blocks 10 and 12 in the direction. In addition, the pipe compression fastening device is provided with a connecting piece 13 to prevent the separation of the circular arc blocks (16).

As described above, the conventional pipe crimping fastening device has a large number of parts for crimping pipes, which causes a complicated part production and assembly process for producing a product. In addition, the conventional pipe crimp fastening device is used in the crimping process in the state that many parts are assembled, there is a problem that the parts are often damaged by the force applied during the crimping.

Moreover, the conventional pipe crimp fastening device requires the operator to wrap the pipe crimp fastening device on the outer surface of the pipe, but the conventional pipe crimp fastening device is composed of many parts, which is very heavy, and due to the many link structures, the crimp fastening device is wound around the pipe outer surface. There was a problem that the workability is remarkably poor.

The present invention has been devised to solve the above problems, the structure is simple, not only to reduce the production cost, but also to reduce the cost of failure and light weight, so that the operator can be easily mounted on the pipe with less force It is an object of the present invention to provide a group.

In order to achieve the above object, the present invention provides a center die having an arc-shaped jaw inside; A pair of side dies whose one end is hinged to an end of the center die, an arc-shaped jaw is provided therein, and a tooth groove is formed at the other end; And a slide die elastically supported by a spring at an end of the side die and configured to slide relative to the side die and having an arc of a circular arc formed therein.

At this time, the angle (α) that the slide die slides with respect to the side dice is characterized in that composed of a 55 ° angle with respect to the line between the two slide dice.

In addition, the center dice or side dice is characterized in that a predetermined number of perforated holes are configured.

In addition, the slide die has a guide protruding from the lower portion, the guide is inserted into the guide groove of the side die, the guide groove is characterized in that the stopper is formed so that the slide die does not fall out.

The present invention configured as described above is simple in structure to reduce the production cost, and also has the effect that the operator can be easily mounted on the pipe with less power due to light weight without failure.

1 illustrates a conventional pipe crimp fastener.
Figure 2 is a view showing a pipe compression fastener according to the present invention.
3 is an enlarged cross-sectional view of a slide die portion;
4 is a sectional view taken along the line AA in Fig.
5 to 7 are views sequentially showing a state of crimping the pipe using the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing a conventional pipe compression fastener, Figure 2 is a view showing a pipe compression fastener according to the present invention, Figure 3 is an enlarged cross-sectional view showing a slide die portion, Figure 4 is AA of Figure 3 5 to 7 are views sequentially showing a state of crimping the pipe using the present invention.

As shown in FIG. 2, the pipe crimp fastener 100 according to the present invention includes a center dice 101 having an arc 102 having an arc shape in contact with the pipe 10, and the center dice. Side dice 104 are hinged 103 on both sides of 101, respectively.

The side dice 104 is formed in contact with the pipe 10 is formed in the arc 105 of the same curvature as the jaw 102 of the center die 101, the one end is the center die 101 and Hinge 103 is fastened to the other end of the teeth 201 of the forceps 200 is inserted into the tooth groove 106 to apply a force, and the jaw 111 of the same curvature as the jaw 105 of the side die 104 The slide dice 110 are provided to slide with respect to the side dice 104.

The slide die 110 is formed at the end of the side dice 104 and configured to slide relative to the side dice 104.

As shown in FIGS. 3 and 4, a guide 112 having a protruding shape is formed under the slide die 110, and the guide 112 slides by being inserted into the guide groove 108 of the side die 104. The dice 110 are configured to slide in a linear direction with respect to the side dice 104.

In addition, the slide die 110 is elastically supported by the spring 113 is configured to elastically return by the elasticity of the spring 113. And, even though the elasticity of the spring 113 pushes the slide die 110 as shown in FIG. 3, the guide 112 below the slide die 110 hits the side of the pin-shaped stopper 109 formed in the guide groove 108. The slide dice 110 are not separated from the dice 104.

It describes the state of pressing the pipe 10 using the pipe crimping fastener 100 of the present invention configured as described above.

As shown in FIG. 5, after opening the side die 104 fastened to both sides of the center die 101 and positioning the pipe 10 to be press-fitted therein, the side die 104 is closed and the center die 101 is closed. And the jaws 102 and 105 in the side dice 104 and the jaws 111 of the slide dice 110 in contact with the pipe 10.

This state is because the diameter of the pipe 10 is larger than the diameter formed by the center die 101, the side die 104, and the jaws 102, 105, and 111 of the slide die 110. Likewise, only the jaw 102 of the center die 101 is in close contact with the pipe 10, the jaw 105 of the side die 104 is in a state of contacting only part of the pipe 10, and the slide die 110 The jaw 111 is not in contact with the pipe 10 yet.

In the state of FIG. 6 as described above, the tooth 201 of the forceps 200 is inserted into the tooth groove 201 of the side die 104 as shown in FIG. Press-press 104).

When the side die 104 is compressed with the tongs 200, the jaw 102 of the center die 101 is lifted around the hinge 103 by the side die 104 fastened to the hinge 103 at both sides of the center die 101. ) And the jaw 105 of the side die 104 compresses the pipe 10, and then the jaw 111 of the slide die 110 is brought into contact with the outer surface of the pipe 10 to retract. The jaw 111 slides in the direction of the side die 104 and the center die 101, the side die 104 and the jaws 102, 105, 111 of the slide die 110 form a circle and the pipe 10. ) Press and fasten.

The present invention configured as described above is very easy to fasten the pipe 10 as compared to the conventional pipe compression fastener 100. In addition, the slide die 110 slides during the compression process of the pipe 10, and the pipe 10 is compressed to compress the pipe 10 at a portion where the respective tubs 102, 105, and 111 are engaged during the compression process of the pipe 10. 10) Minimize the distortion.

And it is preferable to comprise the angle (alpha) which the said slide die 110 slides with respect to the side dice 104 at 55 degrees.

As shown in FIG. 2, the slide die 110 is configured to slide at a 55 ° angle with respect to the line where the two slide dice 104 contact each other, thereby not only compressing the pipe 10 with a small force, It is possible to minimize the crushing of the pipe 10, which is pressed at the portion where the slide die 104 slides to meet the jaw 111 of the slide die 110 and the jaw 105 of the side dice 104.

If the angle α is configured to be larger or smaller than 55 °, a large amount of force for compressing the pipe 10 is required, or the jaw 105 of the side die 104 and the jaw 111 of the slide die 110 are formed. The phenomenon that the pipe 10 is crushed at the portion where the meet.

In addition, as shown in FIG. 2, the center die 101 and the side die 104 are drilled to form holes 107 to reduce the weight of the crimp fastener 100, thereby increasing the worker's convenience. .

The pipe crimp fastener according to the present invention has been described above. The technical configuration of the present invention will be understood by those skilled in the art that the present invention can be implemented in other specific forms without changing the technical spirit or essential features.

Therefore, the embodiments described above are to be understood as illustrative and not limitative in all respects, and the scope of the present invention is represented by the utility model registration claims described below rather than the foregoing detailed description, and utility model registration All changes or modifications derived from the meaning and scope of the claims and their equivalent concepts shall be construed as being included in the scope of the present invention.

10: pipe
100: crimp fastener
101: Center Dice
102: Joe
103: hinge
104: side dice
105: Joe
106: Tooth Home
107: hall
108: guide groove
109: stopper
110: slide dice
111: Joe
112: the guide
200: tongs
201: Tooth

Claims (4)

A center dice 101 provided with an arc-shaped jaw 102 therein;
One end is hinged to the end of the center die 101 101, a pair of side die 104 is provided with a circular arc-shaped jaw 105 and the tooth groove 106 is formed at the other end and ;
A slide die 110 which is elastically supported at the end of the side die 104 by a spring 113 and configured to slide with respect to the side die 104 and has an arc-shaped jaw 111 formed therein. Pipe crimp fasteners, characterized in that configured.
The method of claim 1,
The angle α at which the slide die 110 slides with respect to the side dice 104 is configured at a 55 ° angle with respect to the line where the two slide dice 110 come into contact with each other.
The method of claim 1,
The center die 101 or the side die 104, the pipe crimp fasteners, characterized in that a predetermined number of perforated holes (107) is configured.
The method of claim 1,
The slide die 110 has a guide 112 protruding from the bottom, the guide 112 is inserted into the guide groove 108 of the side die 104, the stopper 109 is inserted into the guide groove 108 A pipe crimp fastener, characterized in that the slide die 110 is formed so as not to fall.

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