JPH07186271A - Pipe material connection device and welding machine - Google Patents

Abstract

PURPOSE:To facilitate setting at the time of clamping even when joints such as an elbow or the like are contained in a piping material to be connected. CONSTITUTION:A plurality of marks D...D are provided to the regions of the periphery of the grasping parts of clamps 1, 2 clamping piping materials J1, J2 along the circumferences centering around the grasping centers of the clamps at a predetermined pitch. Further, a plurality of marks SA...SA are arranged at least at the positions corresponding to the periphery of the pipe end parts of the positioning piping materials of the positioning piping materials of the positioning surfaces 5a, 5b of the spacer 5 for prescribing the distance between the pipe end surfaces of the piping materials J1, J2 clamped by clamps 3, 4 centering around the points corresponding to the grasping centers of the clamps 3, 4 at a predetermined angle in rotary symmetry.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting device and a fusion splicer for connecting pipe materials such as pipes and joints formed of synthetic resin.

[0002]

2. Description of the Related Art As a device for connecting a pipe material of a synthetic resin molded product, the pipe material is grasped by a pair of clamps, and the connecting ends of the respective pipe materials are melted by heating with a heater, and then each is operated by operating a handle or the like. There is a structure in which the respective melted portions are abutted and fused by moving the clamps toward each other (for example, Japanese Utility Model Application No. 56-26217).
Issue).

[0003]

By the way, when connecting joints such as elbows in the above-mentioned connecting device (fusing machine), it is necessary to angle the connecting joint during setting. The angle is adjusted by, for example, visually checking the elbow J with the elbow J11, J12 temporarily fastened to the pair of clamps 11, 12 as shown in FIG. However, the current situation is that the angle cannot be accurately set.

Further, such angle adjustment is complicated and the workability is poor, and particularly when the assembly of the piping material is long and has many bends, many man-hours are required for setting. The number of man-hours required for setting in the joining process of each of these parts is one joint part in an average time, temporary tightening of clamp: 60se
c, Angle check: 20sec, Direction check: 10sec, Clamp fixing: 10sec, a total of 100sec is required, which is very long compared to the actual heating and melting time of the joining process: 20sec, joining time: 20sec. As shown in Fig. 6, there are many joints such as elbows, cheeses, flanges, etc.
If the number of locations is large, the total man-hours required for setting will account for about 50% of the total man-hours (40 min) of the entire assembly.

The present invention has been made in view of such circumstances, and an object thereof is to facilitate setting at the time of clamping even if a pipe material for connection includes a joint such as an elbow. An object of the present invention is to provide a pipe connecting device and a fusing machine.

[0006]

In order to achieve the above object, the connecting device of the present invention is, as shown in FIG. 1 corresponding to the embodiment, a pair of clamps for holding pipe materials J1 and J2 to be connected. 1 and 2, each of the clamps 1 and 2 has a plurality of marks D, ... D at a peripheral portion of the pipe material gripping portion along a circumference around the gripping center of the clamp. It is characterized by being provided at a pitch of.

Further, in order to achieve the same object, the fusion machine of the present invention is, as shown in FIG. 3 corresponding to the embodiment, a space between the pipe end faces of the pipe members J1 and J2 held by a pair of clamps 3 and 4. Is provided with spacers 5 for defining the distance between the pipe ends 5a and 5b, which are in contact with the pipe end faces of the spacers 5, respectively, at least at positions corresponding to the periphery of the pipe ends of the positioning piping members J1 and J2. .. SA are arranged rotationally symmetrically at a predetermined angle about a point C corresponding to the grip centers of the clamps 3, 4.

[0008]

In the connecting device of the present invention, the marks D, ... D provided on the clamps 1, 2 can be used to perform the angle adjustment. That is, the outer peripheral surface S1, of the piping materials J1, J2 for connection
When a mark M (see FIG. 2) is attached to S2 and these piping materials J1 and J2 are gripped by the pair of clamps 1 and 2,
The marks M of the piping materials J1 and J2 are aligned with the marks D of the pair of clamps 1 and 2, and the positions where the marks M are aligned are different between the one clamp 1 and the other clamp 2 and clamped in this state. By doing so, the pipe materials J1 and J2 can be set in a state where they are accurately positioned at a relative angle of 90 °, for example.

Further, according to the fusion machine of the present invention, it is possible to perform accurate angle alignment by utilizing the marks SA..SA provided on the spacer 5. As for the setting, similarly to the above, the mark M of the piping materials J1 and J2 is attached, and the respective pipe end surfaces of these piping materials J1 and J2 are attached to the surfaces 5a and 5b of the spacer 5.
When aligning with each other, the mark M of each pipe material is aligned with the mark SA of the spacer, and the positions where the marks M are aligned are different between the both surfaces 5a and 5b of the spacer 5 respectively. This can be done by fixing the piping materials J1 and J2.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, an embodiment of the connection device of the present invention will be described with reference to FIG. FIG. 1 is a diagram showing a main configuration of the embodiment.

The connection device of this example includes a pair of clamps 1,
2 and a heater (not shown) that can be arranged between the clamps. The pair of clamps 1 and 2 respectively hold the pipe members J1 and J2 for connection, and are arranged on the base (not shown) of the apparatus so as to face each other.

The points to be noted in this embodiment are as follows.
As shown in FIG. 1 (a), a plurality of marks D ... D are provided around the grips of the clamps 1 and 2. Each of the marks D is a dot-shaped mark formed by a general printing method such as transfer or hot stamping or a marking method such as stamping with a punch, and along the circumference centered on the grip center of the clamp. They are arranged at a constant pitch (30 ° angular pitch). However, with respect to the positions of the upper and lower mating surfaces (the surfaces along the horizontal direction) of the clamps 1 and 2, the lines 1a and 2a appearing on the mating surfaces can be used as marks, and therefore, marking of these parts is omitted.

Next, the operation of this embodiment will be described together with the connection procedure. First, the piping material (elbow) used for connection
As shown in FIG. 2, J1 and J2 have an outer peripheral surface S1,
Marks M extending in the direction parallel to the tube center are formed on S2. The mark M is formed by a printing method such as transfer or hot stamping, and the marking portions are two locations facing each other with the tube center interposed therebetween.

Next, the pipe materials J1 and J2 are arranged in the clamps 1 and 2, respectively, and the pipe material J1 held by one of the clamps 1 has the mark M on the line 1 of the mating surface of the clamp 1.
Piping material J2 to the other clamp 2 according to
Aligns the mark M with the mark D located in the vertical direction of the mark groups D, ... D of the clamp, and in this state, clamps the respective clamps to fix the pipe materials J1 and J2.
As a result, the piping materials J1 and J2 are set in a state where the relative angles are 90 ° (FIG. 1 (b)).

A heater is arranged between the pair of clamps 1 and 2 to heat and melt the connecting end of each of the piping materials J1 and J2 with or without contact with the heating surface of the heater. Then, the pair of clamps 1 and 2 are moved relative to each other to bring the melted portions of the pipe materials J1 and J2 into contact with each other, thereby performing butt fusion.

In the above connection procedure, the piping material J1,
Although an example in which J2 is angled by 90 ° in the relative angle has been described, in the connecting device of this embodiment, an angle of 30 ° is obtained by appropriately selecting the mark D of the clamp with which the mark M of the piping material is aligned. It is also possible to make the angle at the pitch of. The arrangement pitch of the marks D, ... D attached to the clamps 1 and 2 is not limited to the angle of 30 °, and if the angle pitch is, for example, 15 °, the angle normally required in this type of connection device is set. You can be almost satisfied with the delivery.

The marks to be attached to the clamps 1 and 2 may be not only dots but also lines having a shape extending radially around the grip center of the clamps. Furthermore, in the above embodiments, an example in which the connection device of the present invention is applied to butt fusion bonding is described, but the connection device of the present invention is also used for socket fusion bonding or adhesive connection using a socket and an adhesive. it can.

Next, an embodiment of the fusion machine of the present invention will be described with reference to FIG. FIG. 3 is a diagram showing a main part structure of the embodiment. The fusion machine of this example uses the pipe materials J1 and J2 for joining.
A pair of clamps 3 and 4 for gripping, a heater (not shown) for heating and melting the connection end of the piping material, and a spacer 5 are provided.

The spacer 5 is used for positioning when fixing the piping materials J1 and J2 to the clamps 3 and 4,
The whole is supported by a rotation mechanism (not shown). The thickness of the spacer 5 is thicker than the heater by 2 mm, and the positioning surfaces 5a and 5b of the spacer 5 are arranged in the use position (the intermediate position between the pair of clamps 3 and 4).
Position is 1 for each position on the heating surface of the heater.
It is set so that the position is closer to the clamps 1 and 2 side by mm. The spacer 5 is in a standby position (a position where it does not interfere with the clamps 1 and 2) by manually operating the lever 51.
Is moved to the use position and returned to the standby position.

The notable points of this embodiment are as follows.
The point is that two types of marks SA..SA and SC..SC are provided on the positioning surfaces 5a and 5b of the spacer 5, respectively. When one of the marks SA, ..., SA is located at the use position, the marks SA, .. SA are aligned with the vertical / horizontal direction along the straight line passing through the point C that coincides with the grip centers of the clamps 1 and 2. The mark extends in a direction inclined by 30 °.

The other marks SC..SC are ring-shaped marks having different diameters, which are arranged concentrically around the point C. Further, the diameter of each of the marks SC corresponds to the outer diameter of each pipe portion having a pipe material size that can be connected by this fusion machine. The above two kinds of marks SA..SA, SC..SC are formed by a general printing method such as transfer or hot stamping.

Next, the operation of this embodiment will be described together with the connection procedure. First, the piping material (elbow) J1, used for connection
As for J2, as in the previous embodiment, the outer peripheral surfaces S1, S of the pipe end are
Mark 2 on 2 respectively (see Fig. 2). Further, the pair of clamps 3 and 4 are set in the clamp open state and are arranged with a predetermined gap therebetween, and the spacer 5 is manually moved to be arranged between the pair of clamps 3 and 4. Keep it.

Next, as shown in FIG. 3 (a), a pipe material J1 is placed on one clamp 3 and the pipe end surface is brought into contact with the positioning surface 5a of the spacer 5 and the mark M of this pipe material is provided. Are clamped with the marks SA of the spacer group 5 of the spacer 5 aligned along the horizontal direction SA and the outer peripheral surface S1 of the pipe material aligned with the ring-shaped mark SC. Then, the pipe material J2 is placed on the other clamp 4 and the same positioning as that described above is performed, but the clamp M is clamped with the mark M of the pipe material J2 aligned with the mark SA along the vertical direction. As a result, the piping materials J1 and J2 are set in a state where the relative angle is 90 ° (FIG. 3 (b)).

After this, the spacer 5 is moved to the standby position, and then a heater is arranged between the pair of clamps 3 and 4, so that the connecting ends of the respective piping materials J1 and J2 are placed on the heater heating surface. On the other hand, after heating and melting in a non-contact state (interval of 1 mm), the heater is removed and the pair of clamps 3 and 4 are relatively moved to bring the melted portions of the pipe materials J1 and J2 into contact with each other, thereby causing butt fusion. To wear.

Here, according to this embodiment, the piping material J1,
When setting J2, the outer peripheral surface of the pipe end is positioned by aligning it with the ring-shaped mark SC of the spacer positioning surfaces 5a, 5b. Therefore, in addition to the above angle adjustment, the alignment of the piping materials J1, J2 is performed at the same time. It can be carried out.

In the above connection procedure, the piping materials J1, J
Although the example in which 2 is angled at 90 ° by the relative angle has been described, in the fusion machine of this example, the angle SA of the spacer 30 to which the mark M of the pipe material is aligned is appropriately selected. It is also possible to perform angle adjustment at a pitch of °. The angles between the marks SA and SA provided on the spacer 5 are not limited to 30 ° and may be arbitrary, for example, 15 °.

Further, as the mark to be attached to the spacer 5, instead of the line having the shape shown in FIG. 3 (b), another shape such as a dot may be adopted. Further, as the marks to be attached to the piping materials J1 and J2, in addition to the line shape shown in FIG. 2, for example, the dot MD shown in FIG. 4 (a) or the line group MS shown in FIG. 4 (b) is used. For example, any shape can be adopted as long as the alignment at the time of clamping is possible.

[0028]

As described above, according to the pipe material connecting device of the present invention, the angle of the pipe material can be set at the time of setting the pipe material by using the mark provided on the clamp. According to the landing machine, since the angle can be set using the mark provided on the positioning surface of the spacer, any device does not require visual angle adjustment work using an angle meter. The angle can be accurately set in a short time. In particular, when connecting a long pipe assembly, the angle matching becomes extremely simple as compared with the conventional case, and the workability thereof is dramatically improved.

[Brief description of drawings]

FIG. 1 is a diagram showing a main configuration of an embodiment of a connection device of the present invention.

FIG. 2 is an external view of a pipe material to be connected by the connection device and the fusion machine of the present invention

FIG. 3 is a diagram showing a configuration of essential parts of an embodiment of a fusion bonding machine of the present invention.

FIG. 4 is a view showing a modified example of a mark provided on a piping material.

FIG. 5 is a diagram showing an example of a conventional technique for angle determination of joints.

FIG. 6 is a diagram showing an example of a connection part of a piping assembly.

[Explanation of symbols]

 1, 2 Clamp D mark 3,4 Clamp 5 Spacer 5a, 5b Positioning surface SA mark J1, J2 Piping material (elbow) S1, S2 Outer peripheral surface of pipe end M mark

Claims (2)

[Claims] 1. A pair of clamps for holding a pipe material such as a resin pipe and a joint, and the pipe materials are connected by fusion bonding or adhesion by relative movement of the clamps. In the device, each of the above-mentioned clamps is provided with a plurality of marks at a predetermined pitch along the circumference around the gripping center of the clamp in the peripheral portion of the piping material gripping portion. A characteristic pipe material connection device. 2. A device for connecting a pipe material such as a resin pipe and a joint by butt fusion welding, and having a pair of clamps and a heater facing each other, wherein the pipe material is gripped by each of the pair of clamps. In this state, the heater is arranged between the clamps to heat and melt the connection end of each pipe material, and the fused parts are abutted by the relative movement of the pair of clamps. The pair of clamps is provided with a spacer for defining the distance between the pipe end faces of the pipe material, and the surface of the spacer against which the pipe end face abuts at least around the pipe end portion of the positioning pipe material. A fusion machine in which a plurality of marks are rotationally symmetrically arranged at a predetermined angle around a point corresponding to the grip center of the clamp at corresponding positions.