KR101674478B1 - Polyethylene Pipe Joint Machining Apparatus - Google Patents

Abstract

The present invention relates to an apparatus for machining a joint surface of polyethylene pipe for gas supply before joining the polyethylene pipe, which is simple in structure, convenient in maintenance, and easy to detachably install a clamping member on an inner diameter of the polyethylene pipe by improving a structure thereof, thereby providing a polyethylene pipe joint part machining apparatus having an improved economic efficiency in which cutting of an outer circumference is uniformly performed through smooth rotation of a cutting member so that fused surfaces can be stably bonded.

Description

TECHNICAL FIELD [0001] The present invention relates to a polyethylene pipe joint machining apparatus,

The present invention relates to a device for machining a joint surface before connecting a polyethylene pipe for gas supply by fusion bonding. It is a simple structure that can be easily attached and detached to a polyethylene pipe at a burial site, And to improve the machining reliability of the fused surface.

In general, a polyethylene pipe, which is one of the gas pipes supplying gas fuel to a home or an industrial complex, is used as a connecting member (an electronic socket, an electronic cap, an electronic service device, And a heating jig. The ends of the pipe are connected to each other by joining or joining the ends of the pipes by connecting the automatic joining device to these joining members or the heating jig and performing the pressure fusion, the heating maintenance, the hot plate removal, the fusion pressure maintenance, and the slow cooling.

It is possible to prevent the occurrence of defective bonding of the joint portion only by removing the UV agent (ultraviolet ray blocking agent) coated on the surface of the polyethylene pipe before the fusion welding operation.

Since the working space is narrow when cutting the surface of the polyethylene pipe during the burial process, the circumference (outer diameter) of the polyethylene pipe is processed by the naked eye and the judgment of the individual with the conventional hand scraper, So that the fusion state of the joint portion is not good and defects are generated.

For example, in Korean Patent No. 10-0201234 (Jun. 15, 1999), "apparatus for forming a flange for forming a synthetic resin pipe, " and Patent No. 10-0938667 (issued on January 25, 2010) Is a processing device in which the end portion of the pipe is used as a support structure to be introduced into the inside of the pipe and a cutting portion is a very complicated and large-sized pipe, so that the connection portion can not be directly processed in the buried site.

In addition, the Korean Registered Patent No. 10-0552237 (published on Mar. 17, 2006) discloses a " polishing apparatus for a nipple of a boiler header "having a rotating shaft supported by bearings contacting with an inner surface of a header, The head of the rotating grinding machine abrades the outer diameter of the header. Since the worker artificially rotates the grinding machine, the worker can not rotate at a uniform moving speed, so that the polishing surface of the full circle can not be obtained.

In addition, a "pipe polishing apparatus" of Japanese Laid-Open Patent Publication No. 10-2014-0021162 (published on April 20, 2014) has a polishing ring gear member composed of a plurality of gears and a polishing member surrounding an outer diameter of the pipe, The polishing member is polished to the outer diameter of the pipe by the rotation of the polishing ring gear member, so that uniform polishing is possible. However, since the polishing member can be used only for a pipe of a single size, There is a problem.

Korean Registered Patent No. 10-0201234 (issued June 15, 1999) Domestic registered patent No. 10-0938667 (Bulletin issued on January 25, 2010) Korean Registered Patent No. 10-0552237 (2006.02.17 Announcement) Korean Patent Laid-Open No. 10-2014-0021162 (published on April 20, 2014)

Accordingly, the present invention has been made in view of the deficiencies and deficiencies of the prior art, and it is an object of the present invention to provide a clamping device which is simple and rational in structure, has a convenient structure and can be easily detached and attached to the inner diameter of a polyethylene pipe, And it is an object of the present invention to provide a polyethylene pipe joint machining apparatus having a very economical effect in which a uniform outer diameter cut is made and stable bonding of the fused surfaces is achieved.

A polyethylene pipe joint processing apparatus of the present invention comprises a central screw rod which is located at an inner diameter of a polyethylene pipe and serves as a central shaft and fixes a first knob at a rear end thereof, a clamping member mounted on the tip of the central screw rod, And a cutting member mounted on the support member and cutting the outer diameter of the polyethylene pipe, wherein the support member is mounted by a fixing bolt fastened to the body, The clamping member includes a support ring coupled to an end of the center screw rod so as to be separated from the center screw rod by a fastening bolt so as to be separated from the centering screw, One end of each of which is hingedly pinned to the support ring and the moving ring, As the middle hinge pin fixed and the other end is made of As done in the first mobile link and the second link moves in contact with the inner diameter of the polyethylene pipe features a link chuck disposed in three places; The support member includes a vertical support having a long hole formed in the longitudinal direction thereof to be coupled to the body by a fixing bolt, a second handle fixed at a rear end thereof while one end thereof is fixed perpendicularly to the tip of the vertical support, A support; Wherein the cutting member includes a casing fixed to the end of the horizontal support of the support member, a boss formed in the casing with a coil spring and formed with a cutting edge at the tip thereof, And the other end of which is fixed to the bite can be a feature of the technical construction.

Further, according to the present invention, it is possible to provide a second support member having a guide roller portion so as to be symmetrical with the support member so as to improve the stability of rotation so as to smoothly perform the cutting operation.

The polyethylene pipe joint part processing apparatus of the present invention can be easily attached to and detached from the inner diameter of a polyethylene pipe of a different size by using a link chuck of a clamping member and the outer diameter of the polyethylene pipe can be easily adjusted by the movement of the support member And uniform cutting of the outer diameter is performed through the smooth rotation of the cutting member, so that stable bonding of the fused surfaces is achieved, thereby improving work efficiency.

Further, according to the present invention, when the guide roller mounted on the second support member contacts the outer diameter of the polyethylene pipe and rotates, the cutting edge of the bite rotates more stably and the outer diameter of the polyethylene pipe can be cut and the worm gear and the rack gear So that it is easy to adjust the position of the cutting edge of the cutting tool so that the cutting depth can be adjusted easily, thereby improving the working efficiency.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a polyethylene pipe jointing apparatus according to the present invention. FIG.
2 and 3 are a side view and a front view showing a use state of the polyethylene pipe jointing apparatus according to the present invention.
4 is an enlarged cross-sectional view illustrating an operating state of a cutting edge of a bite according to the present invention;
5 is a front view showing an operating state as another embodiment according to the present invention.
6 is a partially enlarged cross-sectional view showing an operating state of the second supporting member in Fig.

Hereinafter, the structure and operation of the present invention will be described in more detail with reference to the accompanying drawings. In describing the present invention, terms and words used in the present specification and claims are to be construed in accordance with the principles of the present invention, on the basis that the inventor can properly define the concept of a term in order to best explain his invention It should be construed as meaning and concept consistent with the technical idea of.

1 to 3, the present invention provides a pneumatic tire according to one of the first to third aspects of the present invention, which comprises a central screw rod 10 positioned at an inner diameter of a polyethylene pipe 100 and serving as a central shaft and fixing a first handle 11 at a rear end thereof, A clamping member 2 mounted on the tip of the screw rod 10, a body 13 screwed to the center screw rod 10 so as to be rotatable and maintained in an engaged state by a fixing pin 12, A supporting member 3 mounted by a fixing bolt 14 fastened to the body 13 and a cutting member mounted on the supporting member 3 for cutting the outer diameter or end portion 101 of the polyethylene pipe 100 4) is used.

The core technology of the present invention includes a clamping member 2 detachably attached to the inner diameter of the polyethylene pipe 100 so that the outer diameter of the polyethylene pipe 100 can be uniformly cut and removed while being easily removable from the buried work site, (3 ') for supporting the guide roll part (5) which improves the cutting operation (3) and the cutting member (4) and additionally stably assists the rotation.

First, the clamping member 2 is a core which centers the cutting member 4 so that the cutting member 4 can rotate stably. As shown in Figs. 1 and 2, the center knife 10, to which the first handle 11 is fixed, A support ring 21 which is coupled to the other end of the support ring 21 in a state where the center thereof is fitted in the support ring 21 and is prevented from being separated by the fastening bolt 15 is provided, The support ring 21 and the movement ring 22 are provided at their one ends with hinge pins 211 and 222, respectively, And the other end is composed of a first moving link 231 and a second moving link 232 that are in contact with the inside diameter of the polyethylene pipe 100 and are fixed at three positions, And a link chuck 23 disposed at an interval. The hinge pins 211 and 222 and the hinge pin 212 are formed of a common parallel pin or a split pin or a bolt and a nut which serve as a shaft for assisting rotation of the first moving link 231 and the second moving link 232 .

The support member 3 is attached to a body 13 screwed to the center screw rod 12 by a fixing bolt 14 to mount a cutting member 4 for cutting the polyethylene pipe 100, A vertical support 31 formed with a long hole 311 in the longitudinal direction and coupled to the body 13 by means of a fixing bolt 14, And a horizontal support 32 for fixing the cutting member 4 to the front end thereof while the second handle 321 is fixed to the rear end thereof with one end thereof being fixed by a bolt so as to be orthogonal to the front end of the cutting member 4.

The cutting member 4 is fixed by a bolt in a direction orthogonal to the tip of the horizontal support table 32 of the support member 3 and serves to cut the outer diameter which is a joint portion of the polyethylene pipe 100. The support member 3 And a cutting blade 431 is formed at the tip end of the casing 41 so as to be continuously accommodated together with the coil spring 42 in the casing 41, A fixing pin 43 whose one end is in contact with the slot 411 formed on the side surface of the casing 41 and whose other end is fixed to the bit 43 so as to help the bit 43 move up and down, 44). The elastic force of the coil spring 42 acts to make the cutting edge 431 of the bite 43 adhere to the outer diameter of the joint part of the polyethylene pipe 100, thereby facilitating the cutting operation.

When the support member 3 and the cutting member 4 are disposed at one side from the body 13 and rotate forward or reverse while the body 13 moves forward or backward along the spiral portion of the central screw rod 10, 5 and 6 so that the support member 3 and the cutting member 4 can be smoothly rotated while preventing the center of gravity from being unbalanced when the first support member 3 ' Thereby forming a part 5.

That is, the second support member 3 'is provided with the second vertical support 31' and the second horizontal support 32 'having the same configuration as that of the support member 3, The guide roller unit 5 is mounted on the second horizontal support base 32 'in such a manner that the elastic force of the coil spring 5' can act on the second horizontal support base 32 ' So as to contact the outer diameter of the pipe 100.

The positions of the vertical support 31 of the support member 3 and the vertical support 31 'of the second support member 3' are simultaneously adjusted so that the bite 43 of the cutting member 4 and the guide roller 31 ' The vertical support 31 of the support member 3 and the vertical support (not shown) of the second support member 3 'are provided in order to provide ease of use such that the portion 5 is brought into close contact with or widened to the outer diameter of the polyethylene pipe 100 And rack gears 52 and 52 'are formed on the inner sides of the rack gears 52 and 52' to prevent the rack gears 52 and 52 'from being separated by support plates 51 and 51' A main pinion 54 for rotating the subsidiary pinion 53 and a worm gear 55 for rotating the main pinion 54 are provided on the body 13 so that the main pinion 54 and the subsidiary pinion 53 rotate in synchronization with the main pinion 54, . The third handle 56 is fixed to the end of the worm gear 55 to assist rotation.

Next, the operation of the present invention configured as described above will be described.

 First, after the portion of the link chuck 23 of the clamping member 2 is introduced into the inner diameter of the polyethylene pipe 100 with the gap between the support ring 21 of the clamping member 2 and the movement ring 22 opened, When the knurled surface 221 of the first knob 22 is manually gripped and the first knob 11 is rotated so that the moving ring 22 spirally coupled to the central screw rod 10 is moved toward the support ring 21, The free ends of the first moving link 231 and the second moving link 232 of the chuck 23 are widened to the outside so that they easily come in contact with the inner diameter of the polyethylene pipe 100 as shown in FIGS. And is fixed at the same time.

The central screw rod 10 is positioned at the center in the state where the link chuck 23 of the clamping member 2 is fixed to the inner diameter of the polyethylene pipe 100, When the screwed body 13 is rotated, the cutting member 4 fixed to the horizontal support table 32 of the support member 3 can be moved back and forth, and the fixing bolt 14, The vertical movement of the vertical support 31 of the support member 3 is used to adjust the movement of the cutting member 4 in the vertical direction and the cutting member 4 The cutting edge 431 of the cutting edge 43 of the cutting edge 43 is positioned.

In this state, the cutting edge 431 of the bite 43 is pressed against the outer diameter of the polyethylene pipe 100 by the elastic force of the coil spring 42, and then the second handle 11 is rotated, The cutting edge 431 of the bite 43 cuts the outer diameter of the polyethylene pipe 100 so as to form the UV And the cutting surface is moved forward while the cutting blade 431 of the cutting tool 43 is rotated along with the body 13 on the basis of the center screw bar 10 so that the machined surface is uniform, It is possible to provide a fused joint portion.

5, when the second support member 3 'is disposed so as to correspond to the symmetrical position with respect to the support member 3, the guide roller portion 5 of the second support member 3' The cutting edge 431 of the bite 43 mounted on the support member 3 is pressed against the outer diameter of the polyethylene pipe 100 more stably because it is supported in contact with the outer diameter of the polyethylene pipe 100 with the help of the elastic force of the elastic member 5 ' It is possible to cut the outer diameter of the polyethylene pipe 100 easily by rotating more smoothly since it is possible to closely contact and maintain the balance.

6, when the worm gear 55 is rotated with the aid of the third knob 56, the main pinion 54 and the dependent pinion 53 are rotated at the same time, and the rack gear 55 engaged with the subsidiary pinion 53 is rotated, The vertical support 31 having the first support member 52 and the vertical support 31 'having the rack gear 52' are narrowed with respect to the body 13 and the second support member 3 'is fixed to the outer diameter of the polyethylene pipe 100, It is possible to more easily cut the outer diameter of the polyethylene pipe 100 through the convenient adjustment in which the cutting blade 431 of the bite 43 mounted on the guide roller portion 5 of the support member 3 and the guide roller portion 5 of the support member 3 are in contact with each other .

The position of the cutting edge 431 of the bite 43 finally mounted on the support member 3 is changed only by rotating the third knob 56 of the worm gear 55 in the forward and reverse directions, The cutting depth adjustment is very convenient.

Therefore, the present invention is characterized in that the clamping member (2) having the link chuck (23) is used to position the central screw rod (10) stably in the inner diameter of the polyethylene pipe (100) The cutting edge 431 of the bite 43 mounted on the support member 3 when the support member 3 and the second support member 3 ' When the guide roller portion 5 mounted on the second supporting member 3 'is brought into contact with the outer diameter of the polyethylene pipe 100, the cutting edge 431 of the bite 43 is further cut Since the outer diameter of the polyethylene pipe 100 can be cut while stably rotating, work efficiency is improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. Accordingly, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

10: center thread bar 11: first handle
12: fixing pin 13: body
14: fastening bolt 15: fastening bolt
2: clamping member 21: support ring
22: moving ring 23: link chuck
231: first movement link 232: second movement link
3: support member 31: vertical support
32: horizontal support 4: cutting member
41; Casing 42: coil spring
43: Byte 3 ': Second supporting member
31 ': second vertical support 32': second horizontal support
5: guide roller portion 51:
52, 52 ': Rack gear 53: Dependent pinion
54: main pinion 55: worm gear

Claims (3)

A central screw rod 10 positioned in the inner diameter of the polyethylene pipe 100 and acting as a central shaft and having a first handle 11 fixed to its rear end;
A support ring 21 fitted at the center of the center threaded bar 10 so as to be separated from the end of the center threaded bar 10 by a fastening bolt 15 and a center ring threadedly coupled to the center threaded rod 10, A hinge pin 211 and 222 are fixed to the support ring 21 and the hinge pin 22 so that the hinge pins 211 and 222 are fixed to the support ring 21 and the movement ring 22, And a link chuck 23 which is fixed by the hinge pin 212 and whose other end is composed of a first moving link 231 and a second moving link 232 which are in contact with the inside diameter of the polyethylene pipe 100 and are disposed at three places, (2);
A body 13 screwed to allow the central screw rod 10 to rotate and to maintain the engaged state by a fixing pin 12;
A vertical support 31 formed with a long hole 311 in the longitudinal direction to be coupled to the body 13 by a fixing bolt 14 screwed to the body 13 and a vertical support 31 which is perpendicular to the tip of the vertical support 31 A support member 3 composed of a horizontal support 32 for fixing the cutting member 4 to the tip end while the second handle 321 is fixed to the rear end while one end is fixed; And
A casing 41 mounted on the distal end of the horizontal support 32 of the support member 3 to support the outer diameter of the polyethylene pipe 100 to be cut off; And a cutting edge 431 formed at one end of the cutting edge 431 and a slot 411 formed at the side surface of the casing 41 to prevent the cutting edge 43 from moving up and down, And a fixing pin (44) fixed to the base (43);
A second support member 3 'composed of a second vertical support base 31' and a second horizontal support base 32 'having the same configuration as the support member 3 is mounted symmetrically on the body 13, And a guide roller part (5) which is mounted on the second horizontal support part (32 ') and which is held in contact with the outer diameter of the polyethylene pipe (100) with the aid of the elastic force of the coil spring (5' Processing equipment.
delete The vertical support 31 'of the support member 3 and the vertical support 31' of the second support member 3 'are fixed to the support plate 51 and 51' And a driven pinion 53 which rotates in engagement with the rack gears 52 and 52 'and a driven pinion 53 which rotates in conjunction with the rack gears 52 and 52' Wherein a main pinion (54) for rotating the main pinion (54) and a worm gear (55) for rotating the main pinion (54) are formed in the body (13).

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