JPH0826944B2 - Pipe positioning device - Google Patents

Description

The present invention relates to a pipe positioning device.

(Prior art) Conventionally, when connecting a pipe molded with a thermoplastic resin such as polyethylene, a heating element such as a resistance wire is embedded in the inner peripheral surface of the receiving part of the joint, and the pipe is inserted and connected to this joint. A technique is known in which the resin is melted by appropriately heating the heating element in this state, and the two pipes are joined via a joint. In this case, the pipe and the joint must be accurately positioned so that their centers coincide with each other, and the pipe and the joint should be firmly fixed against the thermal stress and thermal deformation until a certain strength is generated at the time of joining. Need to hold.

From these things, a pipe positioning device as disclosed in JP-A-62-62074 has been proposed.

This positioning device is composed of at least one bar and a fan-shaped cutout portion having a different curvature corresponding to the pipe diameter at an edge portion thereof, and a support plate slidable on the bar, and adapted to the fan-shaped cutout portion. The sharp tube is fixed to the support plate by a belt.

(Problems to be Solved by the Invention) By the way, in the pipe positioning device described above,
Since the pipe is fixed to the fan-shaped notch at the edge of the support plate, the volume is large and the weight is large as a whole, so the pipe joining work is performed in a narrow space, for example, on a road to a predetermined width and depth. Considering that it is performed inside the groove and that it must be fixed with a belt, it is extremely difficult to handle and there is a problem that positioning takes time.

Moreover, a large number of positioning devices corresponding to the combination of the type of joint, such as a T-shaped joint or an elbow joint bent at a predetermined angle, the joint diameter and the pipe diameter, must be prepared, and the work becomes complicated.

The present invention has been made in view of the above points, and provides a pipe positioning device capable of easily joining pipes regardless of the type of joint and the pipe diameter.

(Means for Solving the Problems) The present invention is directed to a main support plate, an auxiliary support plate which is pivotally supported by a substantially central portion of the main support plate, and a right and left proper position of the main support plate and the above The auxiliary support plate is composed of one or a plurality of pipe clamps that are detachably arranged at appropriate positions, and the main support plate and the auxiliary support plate regulate the rotation angle of the auxiliary support plate with respect to the main support plate. A fixing device is provided, and an insertion opening capable of connecting an extension support plate is provided at the end portions on the tip side of the main support plate and the auxiliary support plate, and an appropriate diameter is provided across the main support plate and the auxiliary support plate. The pipe can be fixed via a pipe clamp corresponding to the pipe.

(Operation) At the joining site, attach the required number of pipe clamps corresponding to the diameter of the pipe to be joined to the main support plate or the main support plate and the auxiliary support plate, and further support each of these depending on the pipe diameter and length. An extension support plate is connected to the end of the plate, a pipe is arranged on one of the left and right sides of the main support plate so that one end thereof is located at the substantially center, and is fixed by the above-mentioned pipe clamp. Then, one receiving end of the joint is fitted into one end of the fixed pipe on the center side, and one end of the pipe arranged on the main supporting plate or the auxiliary supporting plate corresponding to the joint is connected to the other receiving end of the joint. Insert it into the part, position it, and fix the other side pipe with the pipe clamp.

After that, the heating element embedded in the inner peripheral surface of the receiving portion of the joint is heated and appropriately melted, and both pipes are joined via the joint. When the joining work is completed and the joining portion is solidified, the pipe is fixed by the pipe clamp, and the main support plate and the auxiliary support plate are pulled up.

Also, when joining the pipe and the joint with an adhesive,
When inserting and joining the pipe and the joint, after applying an adhesive to either or both of the outer surface of the pipe and the inner surface of the joint receiving port, and fixing each pipe with a pipe clamp,
The state may be maintained until the adhesive strength is obtained.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a pipe positioning device, and a main support plate 2 and an auxiliary support plate 4 rotatably pivotally supported on the main support plate 2 at a substantially central portion thereof. It is composed of Although not shown in detail in the vicinity of the shaft support portions 3 of the main support plate 2 and the auxiliary support plate 4, for example, notch balls,
A ratchet type fixing device including an engaging recess into which the notch ball is fitted and removed is incorporated, and when the auxiliary support plate 4 is appropriately rotated, a predetermined angle with respect to the main support plate 2, for example, 45 degrees. The turning angle can be stopped in steps.

Further, one or more pipe clamps 5 are removably arranged on the main support plate 2 on the left and right sides of the main shaft supporting portion 3 and on the auxiliary support plate 4, respectively. It is supposed to be done. The pipe clamp 5 has a conventionally well-known structure, which will not be described in detail, but as shown in FIG. 2, bolts inserted into holes 6 provided at appropriate positions of the main support plate 2 and the auxiliary support plate 4. It is equipped with 7. Therefore, by inserting the bolt 7 of the pipe clamp 5 into the hole 6 provided in the main support plate 2 and the auxiliary support plate 4 and fastening the bolt 7 with the wing nut 8 or the like, the main support plate 2 and the auxiliary support plate 4 For plumbing clamp 5
Can be firmly fixed.

Each pipe clamp 5 is arranged such that the pipes to be joined have their central axes on the same plane. For this reason, it is preferable that the height of the pipe clamp is adjusted so that the central axis of the pipe is fixed at a fixed position when the pipe is fixed by the pipe clamp, regardless of the pipe diameter. Further, when the main support plate 2 and the auxiliary support plate 4 are not in the same plane, it is necessary to make the center axes the same by making the heights of the pipe clamps attached to them different.

Further, at both ends of the main support plate 2, there are insertion openings 2
2, 22 and an insertion opening 42 is provided at the tip end side of the auxiliary support plate 4, so that the overall length of each plate can be lengthened according to the pipe diameter and the pipe length. Thus, the insertion stopper 10 of the extension support plates 21 and 41 can be inserted. The extension support plates 21 and 41 are also appropriately provided with mounting holes 6 for the pipe clamps 5.

 Next, the operation of this embodiment will be described.

FIG. 3 shows a case where the pipe P1 and the pipe P2 are connected on the main support plate 2 via a joint T1 in which a heating element is embedded in the inner peripheral surfaces of both receptacles. In this case, first, the pipe clamps C1 and C2 capable of fixing the pipes P1 and P2 corresponding to the pipe diameters of the pipes P1 and P2 to be connected are inserted into the holes 6 provided in the main support plate 2, Secure with wing nut 8. Then, the pipe P1 is arranged on the left side of the main support plate 2 so that its one end opening is located at the substantially central portion of the main support plate 2, and is fixed by the pipe clamp C1. Then, fit one receiving end of the joint T1 into the one opening of the pipe P1, insert the one opening of the pipe P2 into the other receiving end of the joint T1, and then clamp the pipe P2.
Fix it to the right of the main support plate 2 with C2.

In this way, after connecting the pipes P1 and P2 with the joint T1, if a power source voltage is supplied to the heating element for a predetermined time through a terminal (not shown) provided in the joint T1, the pipe of the joint T1
The heating element embedded in the joint between P1 and P2 heats up and the joint T
By melting the inner peripheral surface of the receiving port of 1 and the outer peripheral surfaces of the pipes P1 and P2, both pipes P1 and P2 can be integrally fusion-bonded via the joint T1.

When the pipe diameters of the pipes P1 and P2 are different, each end portion has an inner diameter corresponding to the pipe diameters of the pipes P1 and P2, and a joint having a tapered portion from one opening to the other opening is formed. (Reducer) may be used. At this time, it is also necessary to replace the pipe clamps C1 and C2 corresponding to the pipe diameters of the pipes P1 and P2.

Next, a case where the pipe P3 and the pipe P4 are bent at a predetermined angle and joined together will be described with reference to FIG. In this case, the joint T2 uses an elbow joint, and the auxiliary support plate 4 is fixed by rotating the auxiliary support plate 4 by a predetermined angle with respect to the main support plate 2 so as to follow the bending angle of the elbow joint T2.

In this case, the auxiliary support plate 4 (the pipe P4 is fixed to the auxiliary support plate 4 by the pipe clamp C3) and the elbow joint T2 are the same as those shown in FIG. The description is omitted.

Further, as shown in FIG. 5, a case where the pipes P5, P6, P7 are connected in a T shape will be described.

First, a pipe clamp C1 that can fix the pipe P5 corresponding to the pipe diameter of the pipe P5 is attached to the left of the main support plate 2, while the pipe diameter of the pipe P6 is attached to the right of the main support plate 2. Correspondingly, install the pipe clamp C2. Then, the main support plate 2 by the pipe clamp C1
The pipe P5 arranged on the left side of is fixed, and one receiving end portion of the T-shaped joint T3 in the linear direction is fitted into the one end opening portion of the pipe P5. At this time, the pipe P5 is adjusted and fixed so that the receiving portion of the joint T3 in the branching direction is located on the auxiliary support plate 4. Further, the one end opening portion of the pipe P6 arranged on the right side of the main support plate 2 is inserted into the other receptacle portion of the joint T3 in the linear direction.

A pipe clamp C3 corresponding to the pipe diameter of the pipe P7 is attached to the auxiliary support plate 4, and the pipe P7 is arranged on the pipe clamp C3.

Then, the one end side opening portion of the pipe P7 is inserted into the receiving portion of the joint T3 in the branching direction, and is fixed by the pipe clamp C3. Here, by heating and melting the heating element embedded in the inner peripheral surface of each socket of the joint T3, the pipes P5, P6,
P7 can be fusion bonded.

In the above example, the heating element embedded in the joint is heated using electric energy and the pipe is fusion-bonded, but other joining, for example, the metal piece is embedded in the inner surface of the joint receiving portion. Alternatively, heating can be performed using ultrasonic waves or electromagnetic waves.

Furthermore, the pipe positioning device of the present invention can be used to hold the state until the joint strength and the pipe are adhered and bonded with an adhesive agent until the adhesive strength can be obtained.

(Effects of the Invention) As described above, according to the present invention, the main support plate, the auxiliary support plate rotatably attached to the main support plate, and several pipes detachably provided on these plates. Since the pipe positioning device is configured with an extremely simple structure called a clamp, it is possible to join a plurality of types of pipes having different pipe diameters and joint shapes with one set of positioning device, and also easy to handle. The joining work in a small space can be easily performed.

Further, since the insertion port into which the insertion stopper of the extension support plate is inserted is provided at the end of each support plate, each support plate length can be adjusted according to the pipe diameter and pipe length.

[Brief description of drawings]

The drawings illustrate an embodiment of the pipe positioning apparatus of the present invention. FIG. 1 is an overall plan view thereof, FIG. 2 shows a pipe clamp, and FIG. 1 is a sectional view taken along line II-II. FIG. 3 to FIG. 5 are explanatory views showing a joint mode of pipes. 2 ... Main support plate 4 ... Auxiliary support plate 5 ... Piping clamp 21,41 ... Extension support plate 10 ... Insertion stopper 22,42 ... Insertion port P ... Pipe C ... Piping clamp

Claims (1)

[Claims] 1. A main support plate, an auxiliary support plate which is pivotally supported by a substantially central portion of the main support plate, and which is rotatable, and which is attached to and detached from an appropriate position on the left and right of the main support plate and an appropriate position of the auxiliary support plate. The main support plate and the auxiliary support plate are provided with a fixing device for restricting a rotation angle of the auxiliary support plate with respect to the main support plate. The main support plate and the auxiliary support plate are provided at their tip end side end portions with insertion ports to which extension support plates can be connected, and the main support plate or a pipe having an appropriate diameter arranged over the main support plate and the auxiliary support plate is provided. A pipe positioning device characterized by being fixable via a pipe clamp corresponding to the pipe.