JPS6226187Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a socket fusion device for fusion-bonding a socket joint and a pipe by gripping them concentrically with a clamp.

(Prior art and its problems) Conventionally, this type of fusion device has a joint clamp that grips a socket joint and a pipe clamp that grips a pipe, which are arranged concentrically on a support frame to support the pipe clamp. There is one that allows you to move it on the frame.

When fusion-bonding a pipe and a socket joint using this fusion device, the pipe clamp is brought close to the joint clamp side and the end of the pipe and socket joint is pressed against the heater, so that the outer circumferential surface of the end of the pipe and After simultaneously melting the inner peripheral surface of the socket of the socket joint, the pipe end was pushed into the socket of the socket joint and fused and joined.

However, in the clamp of the conventional device, the half-structured clamp part that grips the pipe and the pedestal that supports the clamp part on the support frame are integrated in a pre-centered state, so it is difficult to connect. When the pipe is bent, there is a drawback that it is impossible to center the pipe held in each clamp and the socket joint depending on the degree of bending of the pipe. For this reason, a heater (same as the centering tool W shown in Fig. When heated and melted using a shaped heater, the outer circumferential surface of the end of the tube or the inner circumferential surface of the socket joint may be melted in an extremely eccentric state, causing the tube wall thickness to become partially thin or not to be melted. There was a problem that a strong fusion bond could not be obtained due to the formation of parts.

The present invention solves this problem by easily and reliably aligning the socket joint with the pipe held in each clamp, depending on the degree of bending of the pipe, thereby creating a strong fusion joint. The present invention provides a socket fusing device.

(Means for solving the problem) In the socket fusion device of the present invention, both ends of the parallel support frames 2, 2 are fixed to the underframes 19A, 19B, and the joint clamp 1 and the pipe clamp 3 are attached to each support frame 2. , 2 is movably fitted.

The joint clamp 1 and the pipe clamp 3 are composed of half-split clamp parts 6A and 6B that grip the pipe, and pedestals 4A and 4B that support the clamp parts 6A and 6B on support frames 2 and 2, Either one of the clamps has a clamp part and a pedestal formed as separate structures, and a support plate 13 is provided at the bottom of the clamp and a support plate 41 is provided at the top of the pedestal so as to overlap each other. A large-diameter bolt hole is provided through the portion, and the support plates 13 and 41 are connected and fixed with bolts 15 so as to be aligned with each other.

In addition, the tip of the lever 32 pin-joined to the pedestal 4B of the joint clamp 3 and the pedestal 4A of the pipe clamp 1 are connected to each other.
The pedestal 4A or the pedestal 4B can be fixed onto the support frames 2, 2 with a locking tool 22 by connecting the pedestal 4A or the pedestal 4B via a link 30.

Hereinafter, the specific configuration of the present invention will be explained in detail based on examples.

(Example) Fig. 1 is a partially cutaway side view of a socket fusion device showing an embodiment of the present invention, and Fig. 2 is an arrow A in Fig. 1.
It is a front view seen from the direction.

Two support frames 2, 2 extending in parallel in the front-rear direction are arranged at intervals in the left-right direction, and both ends of each support frame 2, 2 are provided with underframes 19A, which are arranged at intervals in the front-rear direction. 19B to form a support stand 5, and on the support frames 2, 2, a joint clamp 1 and a tube clamp 3 are arranged concentrically. The joint clamp 1 includes a clamp part 6A with a half-split structure that grips a pipe, and a pedestal 4A that supports the clamp part 6A on support frames 2, 2.
The clamp portion 6A and the pedestal 4A are constructed separately. In the clamp portion 6A, one end of an upper clamp 62A having a semicircular recess is pivotally attached to one end of a lower clamp 61A having a semicircular recess, and a groove-shaped holding member is attached to the other end of the lower clamp 61A. The ends of both arms of the metal fitting 35 are pivotally connected by pins 11, and the holding metal fitting 3
A tightening screw 9 is screwed into the intermediate portion of the clamp 5, and the holding fitting 35 and the tightening screw 9 constitute a clamp tightening tool 36. Also, the upper clamp 62
A, lower clamp 61A and clamp fastener 3
When the clamp portion 6A is closed by the screw 6, a circular hole 10 for inserting a socket joint is formed. This clamp part 6
A support plate 13 is provided protruding from the lower part of A.

On the other hand, the pedestal 4A is fitted into each support frame 2, 2 so as to be movable back and forth, and a support plate 41 is protruded from the upper part of the pedestal 4A.

This support plate 41 and the support plate 13 of the clamp part 6A
The two bolts 15 which are placed on top of each other and spaced apart in the left and right direction are the washer 1.
6. The bolt 15, which is sequentially inserted through the bolt hole 42 of the support plate 41 of the pedestal 4A, the large-diameter bolt hole 12 of the clamp part 6A, the tightening plate 14, and the friction plate 17, and protrudes from the friction plate 17, has a handle. A fixing female screw fitting 18 is screwed together. The bolt 15
A space is provided between the periphery of the bolt hole 12 and the periphery of the large-diameter bolt hole 12 to allow the clamp portion 6A to move up and down and move left and right. Then, the clamp part 6A can be moved up and down and left and right with respect to the pedestal 4A, and when the tightening fixture consisting of the bolt 15 and the fixing female screw fitting 18 is tightened, the clamp part 6A is fixed to the pedestal 4A. Ru.

Locking rods 23 are fixed to both left and right sides of the pedestal 4A, and hook-shaped locking tools 2 are provided on both left and right sides of the underframe 19A to be detachably engaged with the locking rods 23.
2 is pivotally attached by a pin 21, and when the locking tool 22 is engaged with the locking rod 23, the pedestal 4A supporting the clamp portion 6A is fixed in contact with the underframe 19A.

On the other hand, the joint clamp 3 has a structure in which a half-split clamp part 6B for gripping a pipe and a pedestal 4B for supporting the clamp part 6B on the support frames 2, 2 are integrally coupled. Clamp part 6B
One end of an upper clamp 62B having a semicircular concave portion is pivotally attached to one end of a lower clamp 61B having a semicircular concave portion by a pin, and the other end of the lower clamp 61B is attached to one end portion of a lower clamp 61B having a semicircular concave portion. A metal fitting 35 is pivotally attached by a pin and is composed of the upper clamp 62B, the lower clamp 61B, and the clamp fastener 36, and the clamp portion 6B has the same structure as the clamp portion 6A of the joint clamp 1.

A pedestal 4B integrally connected to the lower part of the clamp part 6B is fitted to each support frame 2, 2 so as to be movable back and forth, and the intermediate portion of a lever 32 is pivotally connected to the pedestal 4B by a pin 33. and that lever 3
One end of a link 30 is pivotally attached to the tip of the lever 2 by a pin 31, and the other end of the link 30 is pivotally attached to a mounting seat 28 fixed to the pedestal 4A by a pin 29, and the lever By rotating 32, the joint clamp 1 and the pipe clamp 3 can be moved relatively toward each other or away from each other.

Furthermore, a handle bar 27 that protrudes from the lower clamp 61A to both left and right sides is fixed to the joint clamp 1, and one end of the arm 24 is attached to a screw type fitting 25 on both the left and right sides of the lower clamp 61B of the pipe clamp 3. A handhold bar 26 is attached to the other end of the arm 24, and each handhold bar 26, 2
When the joint clamp 1 and the pipe clamp 3 are tightly gripped by placing a hand over the joint clamp 7, the joint clamp 1 and the tube clamp 3 are moved relatively closer to each other.

Note that the underframe 19B and the pedestal 4B are also provided with the aforementioned locking tools 22 and locking rods 23,
Its illustration is omitted.

Next, an explanation will be given of the sequence of operations when fusion splicing a pipe and a socket joint using the socket fusion device of the above embodiment.

First, with the joint clamp 1 and pipe clamp 3 positioned at both ends of the support base 5, insert the socket joint S.
is gripped by the joint clamp 1, and the pipe P is gripped by the pipe clamp 3, and a slight gap is provided between the socket joint S and the pipe P.

Next, fit the centering tool W into one of the socket joint S and the pipe P, release the fixation between the pedestal 4A and the underframe 19A, or the fixation between the pedestal 4B and the underframe 19B, and remove the bolts 15 and Fixing female screw fitting 1
Loosen the fixture consisting of 8. Next, lever 32
The centering tool is rotated to move the joint clamp 1 and pipe clamp 3 relatively close together, and adjust the vertical and horizontal positions of the clamp part 6A of the joint clamp 1 with respect to the pedestal 4A. Fit W into socket joint S and pipe P, and
After aligning the center of the pipe P, the clamp portion 6A is fixed to the pedestal 4A by tightening the tightening fixture consisting of the bolt 15 and the fixing female screw fitting 18.

Next, the lever 32 is rotated in the opposite direction to relatively move the joint clamp 1 and the pipe clamp 3 apart, and then the centering tool W is removed, and then a socket joint Simultaneously heating and melting the inner circumferential surface of S and the outer circumferential surface of the pipe P, and then immediately moving the joint clamp 1 holding the socket joint S and the pipe clamp 3 holding the pipe P closer to each other, The pipe P is inserted into the socket joint S and fused and joined.

When the joint clamp 1 and the pipe clamp 3 are moved relatively close to each other, in addition to the moving force caused by the rotation of the lever 32, the moving force caused by gripping the hand rods 26 and 27 may be applied.

In the case of the above embodiment, the clamp part 6A of the joint clamp 1 is fixed to the pedestal 2 so that its position can be adjusted in the vertical and horizontal directions, and the clamp part 6B of the pipe clamp 3 is integrally provided with the pedestal 4B. However, on the contrary, the clamp part 6B of the pipe clamp 3 is fixed to the pedestal 4B so that its position can be adjusted in the vertical and horizontal directions, and the clamp part 6A of the joint clamp 1 is integrally provided with the pedestal 4A. You can.

[Functions and effects of the invention]

As detailed above, in the present invention, either the joint clamp or the pipe clamp has a separate structure that allows the clamp part to be aligned with the pedestal, so if the pipe gripped by the joint clamp or the pipe clamp is bent. However, it is possible to easily and reliably align the socket joint with the pipe to be connected depending on the degree of bending of the pipe. Therefore, when simultaneously heating and melting the outer peripheral surface of the end of the pipe and the inner peripheral surface of the socket joint using a heater, both joint surfaces can be melted uniformly and evenly, and the pipe and socket joint can be melted together. Strong fusion bonding is possible.

In addition, since either the joint clamp or the pipe clamp can be fixed on the support frame as appropriate using a locking device, it is practical to be able to fix either clamp on the support frame depending on the situation of piping construction on site. In addition, since the joint clamp or pipe clamp can be easily moved by rotating the lever, the pipe and the socket joint can be easily fused and joined.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway side view showing a socket fusion device according to an embodiment of this invention, and FIG. 2 is a front view as seen from the direction of arrow A in FIG. 1. In the figure, 1 is a joint clamp, 2 is a support frame, 3 is a pipe clamp, 4A and 4B are pedestals,
5 is a support base, 6A and 6B are clamp parts, 12
is a large diameter bolt hole, 13 is a support plate, 14 is a tightening plate,
15 is a bolt, 17 is a friction plate, 18 is a female screw fitting for fixing, 19A and 19B are an underframe, 22 is a locking tool, 23 is a locking rod, 24 is an arm, 26 and 2
7 is a handhold bar, 30 is a link, 32 is a lever, 41
is the support plate.

Claims (1)

[Scope of utility model registration request] Both ends of the parallel support frames 2, 2 are the underframe 1
9A, 19B, and a joint clamp 1 and a pipe clamp 3 are guided and movably supported by the support frames 2, 2. In the socket fusion device, the joint clamp 1 and the pipe clamp 3 grip the pipe. The clamp parts 6A, 6B have a half-split structure, and the pedestals 4A, 4B support the clamp parts 6A, 6B on the support frames 2, 2. A support plate 13 is provided on the lower part of the clamp part and a support plate 41 is provided on the upper part of the pedestal so as to overlap each other, and a large diameter bolt hole is formed in the overlapping part. A lever 3 is provided through the support plates 13 and 41 and connected and fixed with bolts 15 so that the support plates 13 and 41 can be aligned with each other, and is pin-connected to the pedestal 4B of the joint clamp 3.
2 and the pedestal 4A of the tube clamp 1 are connected via a link 30, and the pedestal 4A or the pedestal 4B
A socket fusing device characterized in that it can be fixed onto support frames 2, 2 with locking tools 22.