JPH0243708Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application The present invention is an auxiliary device for a pipe joint fusion machine that fuses resin-made saddles, sockets, and other pipe joints made of resin (for example, polyethylene) to resin pipes made of polyethylene, for example. More specifically, the present invention relates to an auxiliary device that includes a device for adjusting the installation angle of a pipe joint fusion splicer with respect to an installation surface, and an auxiliary clamp device for a resin pipe to be fused to the pipe joint.

Prior Art and Problems In recent years, resin pipes such as polyethylene have been increasingly used as gas pipes in place of conventional metal pipes. When a branch pipe is connected from the side to a main pipe made of such a resin pipe, a saddle 2 made of resin is usually fixed to the main pipe 1, as shown in FIG. Auxiliary resin pipe 3
A branch pipe 5 is connected to a resin socket 4 which is connected to the saddle 2 in advance. saddle 2
and auxiliary pipe 3, socket 4 and branch pipe 5.
A heat fusion method is used for connection. For example, when connecting socket 4 and branch pipe 5,
A method is used in which the distal end of the socket 4 and the distal end of the branch pipe 5 are pressed against a heater and melted under pressure, and then the pressurized melted surfaces are pressed together at a predetermined pressure.

A conventional pipe fitting fusion machine for heating and fusing resin pipe fittings such as saddles and sockets mentioned above and resin pipes such as auxiliary pipes and branch pipes uses a pipe fitting clamp and resin to hold the pipe fittings. It is equipped with a pipe clamp for holding a pipe, a pipe joint clamp and a heater that can be inserted between the pipe clamp, and the pipe joint clamp and the pipe clamp are arranged coaxially with each other on the machine base, and The clamp is arranged so as to be relatively movable in the direction of the central axis of the clamp.

Generally, when connecting a main pipe such as a gas pipe to a branch pipe, the branch pipe 5 is often connected to the main pipe 1 by piping it diagonally, as shown in FIG. However, in conventional pipe fitting fusion machines, the center axis of the pipe fitting clamp or pipe clamp is designed to be parallel to the installation surface of the machine, so it is difficult to connect branch pipes and pipe fittings that extend at an angle. When heating and fusing the pipe joints, the stability of the pipe joint fusing machine is significantly reduced, and pressure work becomes difficult.

In addition, if the resin pipe is long, such as a branch pipe, it is difficult to maintain the axis of the resin pipe concentrically with the pipe fitting simply by holding the tip of the resin pipe with a pipe clamp, This caused the pipe fittings to be connected at an angle.

Purpose of the invention In view of the problems of the prior art described above, the present invention is to easily and reliably connect a resin pipe and a pipe joint using a pipe joint fusion splicer even when the resin pipe is inclined. It is an object of the present invention to provide an auxiliary device for a pipe joint fusion splicer, which enables smooth connection work while maintaining the resin pipe concentrically with the pipe joint.

Structure of the invention According to the invention, the above purpose is to provide a machine base, a pipe joint clamp provided on the machine base for holding a resin pipe joint, and a pipe joint clamp provided on the machine base for holding a resin pipe. a pipe clamp, and a heater insertable between the pipe joint clamp and the pipe clamp, the pipe joint clamp and the pipe clamp being arranged coaxially with each other and movable relative to each other in the central axis direction of the clamp. An auxiliary device for a joint fusion splicer, comprising: an inclination angle adjusting device for adjusting the inclination angle of the machine base with respect to the installation surface; and a positioning of the resin pipe held by the pipe clamp away from the pipe clamp. and an auxiliary pipe clamp provided on the inclination angle adjustment device to hold the pipe clamp movably in the central axis direction. .

Embodiment Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 6 of the drawings.

1 and 2 show the joint state of the pipe joint fusion splicer 10 and the auxiliary device 11 for the pipe joint fusion splicer 10, and FIGS. 3 to 6 show the joint state of the pipe joint fusion splicer 10. 10 structures are shown. Referring to these figures, the pipe joint fusion splicer 10 has a machine base 12, a pipe joint clamp 14 for fastening and holding a pipe joint 13 made of resin such as polyethylene, and a resin pipe 15 made of polyethylene or the like that is fastened and held. A heater 17 (see FIG. 4) that can be inserted between the pipe joint clamp 14 and the pipe clamp 16 is provided. The pipe clamp 16 and the pipe joint clamp 14 are arranged so that their holding center axes coincide. Pipe joint clamp 14
The pipe clamps 16 and 16 are arranged coaxially with each other and are movable along a pair of guide rods 18 fixed to the machine base 12 in the direction of the center axis of both clamps 14 and 16.

The pipe joint clamp 14 has a fixed half body 19 slidably held by a pair of guide rods 18 and a movable half body 20 hinged to the fixed half body 19. Clamp bolt 21 with
This allows the pipe joint 13 held between the two halves 19 and 20 to be strongly fastened and held.

Similarly, the pipe clamp 16 is connected to a pair of guide rods 1
8, and a movable half 23 hinged to the fixed half 22. Both halves are connected by a clamp bolt 24 having a knob. The resin pipe 15 held between the body parts 22 and 23 can be strongly fastened and held.

Referring to FIGS. 1 and 2, the machine stand 12 is provided with a booster 25 for moving the pipe clamp 16 in the direction of the central axis of the pipe joint clamp 14. The booster 25 connects a substantially U-shaped boost lever 26 whose base end is pivoted to a movable frame 33 (described later) by a pin 27, and an intermediate portion of the boost lever 26 and the pipe clamp 16. connecting rod 29
It has By rotating the booster lever 26 using the pin 27 as a fulcrum, the pipe clamp 16 can be moved along the guide rod 18, and by reversing the machine base 12, the pipe joint clamp 14 can be moved along the guide rod 18. It can also be moved along. If one of the pipe clamp 16 or the pipe fitting clamp 14 is to be moved, the other can be fixed on the guide rod 18 by means of fixing means (not shown). According to this booster 25, the pipe clamp 16 can be moved with a light force based on the lever principle.

Referring to FIGS. 1 and 2, the auxiliary device 11 for the pipe joint fusion splicer 10 includes an inclination angle adjustment device 30 for adjusting the inclination angle of the machine base 12 with respect to an installation surface such as underground, and a pipe clamp. An auxiliary pipe clamp 31 is provided for holding the resin pipe 15 held by the pipe clamp 16 at a position away from the pipe clamp 16 so as to be movable in the direction of the center line of the pipe clamp 16.

The inclination angle adjustment device 30 includes a fixed frame 32 installed on an installation surface and a movable frame 3 for holding the machine base 12.
3, a connecting pin 34 as a connecting member that rotatably connects the end of the movable frame 33 on the pipe joint clamp side to the fixed frame 32, and a connecting pin 34 for adjusting the inclination angle of the movable frame 33 with respect to the fixed frame 32. It is equipped with an adjuster 35. The adjuster 35 includes a pair of levers 36, each of which has one end rotatably supported by the fixed frame 32 via a pin 37.
An elongated hole 38 extending in the longitudinal direction is provided. The pair of clamp knobs 39 have bolts 40 that pass through the long holes 38 of the pipe joint clamp lever 36 and are screwed into threaded holes in the movable frame 33. can be tightened or loosened. As shown in FIG. 1, by tightening the clamp knob 39 with the movable frame 33 tilted at a desired angle with respect to the fixed frame 32, the movable frame 33
3 can be fixed to a fixed frame 32.

Auxiliary pipe clamp 31 is attached to movable frame 33. More specifically, the auxiliary pipe clamp 31 includes a pair of rollers 41 and 42 for gripping the resin pipe 15, a support frame 43 that supports the rollers 41 and 42, and a support frame extending in a direction perpendicular to the central axis of the pipe clamp 16. The height adjusting device 44 includes a post 45 fixed to the movable frame 33 and an adjustment knob 4 rotatably attached to the post 45.
6. An adjustment knob 46 is provided on the support frame 43.
A bolt 47 that is screwed into the post 45 is fixed, and the bolt 47 is connected to the post 45 so that it can only slide. By turning the adjustment knob 46, the support frame 43 can be moved up and down together with the bolt 47.

The lower roller 41 is rotatably supported by a support frame 43. The upper roller 42 is supported by a support frame 43 so that its position can be adjusted in a direction perpendicular to the central axis of the pipe clamp 16. Adjustment knob 4
By turning 9, the upper roller 42 can be vertically displaced with respect to the support frame 43.
The support frame 43 is a half body portion 5 that supports the lower roller 41.
0 and a half-body part 51 that supports the upper roller 42, one end side of both half-body parts 50, 51 is connected by a hinge 52, and both half-body parts 5
The other end side of 0 and 51 can be fastened by a clamp member 53.

Next, the operation of the pipe joint fusion splicer 10 and the auxiliary device 11 having the above configuration will be explained.

When connecting the long resin pipe 15 extending at an angle to the socket 13 as a pipe joint, first, the inclination angle of the movable frame 33 is adjusted with the clamp knob 39 with respect to the fixed frame 32 installed on the installation surface. As a result, the pipe clamp 16 and the pipe joint clamp 1
The center axis of 4 is made to coincide with the axis of the resin tube 15.
By tightening the clamp knob 39, the movable frame 33 and the fixed frame 32 are fixed, so the pipe joint fusion splicer 1
0 is made stable with respect to the installation surface.

The socket 13 is held in the pipe joint clamp 14. Further, the resin pipe 15 is held by the pipe clamp 16 and the auxiliary pipe clamp 31. Since the resin pipe 15 is supported at two points by the pipe clamp 16 and the auxiliary pipe clamp 31, the resin pipe 15
stability is increased. Since the height of the lower roller 41 can be adjusted by adjusting the adjustment knob 46, the center of the resin pipe 15 can be accurately aligned with the centers of the pipe clamp 16 and the pipe joint clamp 14. Further, the upper roller 42 can be pressed against the upper surface of the resin pipe 15 by tightening the adjustment knob 49. Therefore, the resin tube 15 can be firmly held. but,
Since the rollers 41 and 42 are rotatable, the resin pipe 15 is movable relative to the auxiliary pipe clamp 31 in the central axis direction.

In order to heat-fuse the resin pipe 15 and the socket 13, a pipe clamp 16 is used as shown in FIG.
A heater 17 is inserted between the pipe joint clamp 14 and the pipe joint clamp 14 . Thereafter, by operating the lever 26 of the booster 25, the pipe clamp 16 is moved toward the pipe joint clamp 14. As a result, the resin tube 15 is pressed against the heater 17, and
Heater 17 is pressed against socket 13. Due to the heating action of the heater 17, the tip of the resin tube 15 and the abutting end of the socket 13 are melted. Next, by operating the lever 26, the pipe clamp 1 is
6 to its original position and the heater 17 is removed, the pipe clamp 16 is again moved to the pipe joint clamp 14 side by operating the lever 26, and the melted end of the resin pipe 15 is brought into contact with the melted surface of the socket 13. Press. As a result, the resin pipe 15 and socket 13
and are pressure fused.

By operating the lever 26, the pipe clamp 16 is
, the resin pipe 15 moves in the central axis direction relative to the auxiliary pipe clamp 31 while being held between the pair of rollers 41 and 42 of the auxiliary pipe clamp 31.
3 can be accurately coaxially connected.

Although one embodiment has been described above, the present invention is not limited to only the aspects of the above embodiment.
Various changes can be made to the pipe joint clamp components of the pipe joint fusion splicer and the auxiliary device within the scope of the invention described in the claims of the utility model registration. Further, the pipe joint to be connected to the resin pipe is not limited to a socket, but may be a saddle, for example.

Effects of the Invention As is clear from the above explanation, the present invention consists of a machine base, a pipe joint clamp provided on the machine base for holding a resin pipe joint, and a machine base for holding a resin pipe. and a heater insertable between the pipe joint clamp and the pipe clamp, the pipe joint clamp and the pipe clamp being disposed coaxially with each other and movable relative to each other in the central axis direction of the clamp. This is an auxiliary device for a pipe joint fusion splicer, comprising: an inclination angle adjustment device for adjusting the inclination angle of the machine base with respect to the installation surface; and an auxiliary pipe clamp provided on the inclination angle adjustment device to hold the pipe clamp movably in the central axis direction of the pipe clamp at a remote position, so that the resin pipe is not tilted. By adjusting the inclination angle adjusting device, even when the pipe joint is fused, the pipe joint fusion splicer can easily and reliably connect the resin pipe and the pipe joint. In addition, the auxiliary pipe clamp allows the resin pipe to be maintained concentrically with the pipe joint, allowing for smooth connection work.

[Brief explanation of the drawing]

Fig. 1 is a front view of a pipe fitting fusion machine and auxiliary equipment showing one embodiment of the present invention, Fig. 2 is a side view of the apparatus shown in Fig. 1 as viewed from the direction of the gripping center of the resin pipe, and Fig. 3
The figure is a plan view of the pipe fitting fusion splicer shown in Fig. 1, Fig. 4 is a front view of the pipe fitting fusion splicer shown in Fig. 1, and Fig. 5 is the left side of the pipe fitting fusion splicer shown in Fig. 1. 6 is a right side view of the pipe joint fusion splicer shown in FIG. 1, and FIG. 7 is a partial sectional view showing the connection structure between a resin main pipe and a resin branch pipe. 10... Pipe joint fusion splicer, 11... Auxiliary device, 1
2... Machine stand, 14... Pipe joint clamp, 16...
Pipe clamp, 17...Heater, 30...Inclination angle adjustment device, 31...Auxiliary pipe clamp, 32
... fixed frame, 33 ... movable frame, 34 ... connection pin, 35 ... adjuster, 41, 42 ... roller, 43 ... support frame, 44 ... height adjustment device, 4
8...Groove.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A machine base, a pipe joint clamp provided on the machine base to hold a resin pipe joint, and a pipe clamp provided on the machine base to hold a resin pipe. A pipe joint fusion splicer, comprising: a heater insertable between the pipe joint clamp and the pipe clamp; , the auxiliary device includes: an inclination angle adjustment device for adjusting the inclination angle of the machine stand with respect to the installation surface; and a resin pipe held by the pipe clamp at a position away from the pipe clamp and an auxiliary pipe clamp provided on the inclination angle adjusting device to hold the pipe movably in the central axis direction. 2. The inclination angle adjustment device includes a fixed frame installed on an installation surface, a movable frame for holding the machine base, and a connecting member rotatably connecting one end of the movable frame to the fixed frame. A utility model according to claim 1, further comprising an adjuster for adjusting the inclination angle of the movable frame with respect to the fixed frame, and the auxiliary pipe clamp is attached to the movable frame. Auxiliary device for pipe joint fusion splicer. 3. The auxiliary pipe clamp includes a pair of rollers for holding the resin pipe, a support frame for supporting the rollers, and a support frame for adjusting the height of the support frame in a direction perpendicular to the central axis of the pipe clamp. The auxiliary device for a pipe joint fusion splicer according to claim 2, further comprising a height adjustment device attached to the movable frame. 4 One of the pair of rollers is rotatably supported by the support frame, and the other roller is supported with respect to the support frame so that its position can be adjusted in a direction perpendicular to the central axis of the pipe clamp. An auxiliary device for a pipe joint fusion splicer, characterized by: