JPH05293891A - Fusion-bonding device - Google Patents

Abstract

PURPOSE:To provide a fusion bonding device which can manufacture a branch pipe joint of a required shape at a low cost. CONSTITUTION:A first stand 2 and a second stand 3 are in a freely sliding manner supported in mutually approaching and separating directions along a guide rail 1. A heater 6 is in a freely providing manner provided between the first stand 2 and the second stand 3. A first clamp 4 and a second clamp 5 wherein a synthetic resin tube is respectively in a freely holding manner formed, is freely rotatably fitted respectively to the first stand 2 and the second stand 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fusing machine for fusing and joining resin molded products such as synthetic resin pipes and pipe fittings and their accessories, and more particularly to a fusing machine suitable for manufacturing branch pipe fittings. It's about the machine.

[0002]

2. Description of the Related Art Methods of manufacturing a branch pipe joint include an injection molding method, a blow molding method, a drawing method, and a fusion bonding method.

The drawing method is a method of joining two synthetic resin pipes. That is, first, a hole is made in the tube wall of one synthetic resin tube, and the peripheral portion of this hole is heated and softened. Next, insert a mold with a diameter larger than the hole from the open end of this synthetic resin pipe, pull out the mold from the through hole,
A rising portion is formed on the peripheral portion of the through hole. Then, another synthetic resin pipe is fused to the rising portion thereof, or fitted or adhered to be joined to manufacture a branch pipe joint (see Japanese Patent Laid-Open No. 48-62868).

As a method of fusion bonding, there is known a method of joining three synthetic resin pipes each having one end cut at an angle of 45 degrees to the pipe axis. That is, first, the slanted end surfaces of two synthetic resin pipes are fused together to form an L-shaped pipe, then the corners of the L-shaped pipe are cut at an angle of 45 degrees, and the cut surface remains. Is a method of manufacturing a branch pipe joint by fusing the inclined end faces of the synthetic resin pipe.

[0005]

However, the above conventional method for manufacturing a branch pipe joint has the following problems.

In the drawing method, since the diameter of the rising portion formed on the tube wall of the synthetic resin tube must be almost the same as the diameter of the other synthetic resin tube to be joined, the same diameter or the same diameter is used. It is impossible to manufacture a branch pipe joint by joining two synthetic resin pipes close to each other.

In the injection molding method and the blow molding method, the molds must be aligned in accordance with the size and shape of the branch pipe joint, resulting in high cost.

Further, in the method of fusing, the conventional fusing machine is capable of fusing and joining the synthetic resin pipes only in a preset direction (directions in which their axes are perpendicular to each other). Therefore, it has been impossible to manufacture the branch pipe joint by obliquely fusion-bonding the synthetic resin pipes. In addition,
If you want to manufacture branch pipe joints with different shapes,
The fusing machine also needs to be manufactured separately, which increases the cost.

The present invention has been made in view of the above conventional problems, and an object of the present invention is to provide a fusion splicer capable of manufacturing a branch pipe joint having a desired shape at low cost.

[0010]

In order to achieve the above object, in the fusion machine of the present invention, the first frame and the second frame are slidably supported in the directions toward and away from each other, and the heater is A clamp that is provided so as to be installed between the first frame and the second frame and that can hold a resin molded product such as a synthetic resin pipe, a pipe joint, or an accessory thereof is provided with the first frame and the second frame. It is rotatably attached to two mounts.

[0011]

When manufacturing a branch pipe joint by using the fusion machine of the present invention, first, a synthetic resin pipe having a hole in the pipe wall is held by one clamp, and the end portion is made of the synthetic resin. The other resin clamp holds a synthetic resin pipe formed in a shape matching the hole of the resin pipe. At this time, in the fusion machine according to the present embodiment, the clamps are rotatably attached to the first frame and the second frame, so that the relative orientations of the two synthetic resin pipes can be set freely. You can

Then, the heater installed between the first frame and the second frame heats and melts the peripheral portion of the hole of the one synthetic resin pipe and the end of the other synthetic resin pipe, and the heater is used as the first frame. The synthetic resin pipes are removed from the position between the second mounts, and the two synthetic resin pipes are slid in the direction in which they approach each other, and the heating and melting surfaces are fused with each other at a predetermined pressure. Then, the synthetic resin pipes are fusion-bonded to each other in the direction of being held by the clamp.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A fusing machine according to an embodiment of the present invention will be described below with reference to the drawings. 1 is a plan view showing a fusion machine according to an embodiment of the present invention, FIG. 2 is a side view showing the fusion machine, and FIG.
-III cross-sectional view, in the figure, 1 is a guide rail, 2 is a first mount, 3 is a second mount, 4 is a first clamp, 5 is a second clamp, and 6 is a heater.

The guide rail 1 includes a first mount 2 and a second mount 2.
The pedestal 3 is slidably supported in a direction in which it approaches and away from each other, and is formed by two rod members.

The first frame 2 and the second frame 3 support the first clamp 4 and the second clamp 5, respectively, and the cylindrical bodies 21, 31 into which the guide rail 1 is inserted are inserted.
And lower tables 22 and 32 fixed on the cylinders 21 and 31, respectively. The first mount 2 and the second mount 2
The gantry 3 is connected to each hydraulic cylinder 7,
The hydraulic cylinder 7 is driven to slide.

The first clamp 4 holds the synthetic resin pipe P1 in a direction orthogonal to the sliding direction of the first frame 2, and is attached to the second frame 3 with two pairs of bolts 8 and nuts 9. Upper table 41 and the upper table 41
The tube support member 42 is fixed to the tube support member 42, and two pressing members 43 and 43 are fixed to both ends of the tube support member 42. The pipe support member 42 is formed in an L shape, and the pressing member 43 is formed in a shape having a curved portion 431 along the pipe wall of the synthetic resin pipe P1, and a corner of the pipe support member 42 is formed. 421 and the curved portion 4 of the pressing member 43
The synthetic resin pipe P can be held between the same and 31.

The second clamp 5 holds the synthetic resin pipe P2 in a direction parallel to the sliding direction of the second mount 3,
An upper table 51 attached to the second mount 3 with two pairs of bolts 8 and nuts 9, a pair of holding members 52, 52 slidably attached along the upper surface of the upper table 51, and holding these Guide members 53, 53 for guiding the slide of the members 52, 52, and a handle 54
And a rod 55 with a thread for transmitting the rotational force of the handle 54 to the holding members 52, 52 as a force in the sliding direction. The thread of the rod 55 is such that when the handle 54 is turned to one side,
2 and 52 approach each other, and the holding members 52 and 52 are cut away from each other when the handle 54 is turned to the other. Further, the holding member agents 52, 52 are formed with cutouts 531 at right angles on the surfaces facing each other, and the synthetic resin pipe P is provided between the cutouts 531 of the holding members 52, 52.
You can hold two.

Further, the first clamp 4 and the second clamp 5
Has bolt holes 411, 412, 511, 512 formed in two places of the upper tables 41, 51 in the shape of concentric arc-shaped long holes, and the lower tables 22 of the first frame 2 and the second frame 3 are It is rotatable along the upper surface of 32.

The heater 6 includes a first mount 2 and a second mount 2.
It is installed between the mounts 3 and is rotatably attached to a base (not shown). Further, the heater 6 is provided with a mountain-shaped attachment 61 in which a mountain portion 611 having a right-angled top is formed, a groove-shaped attachment 62 in which a V-shaped groove 621 having a right-angled bottom is formed, and a handle 63. .. In the heater 6, the chevron attachment 61 faces the first clamp 4, and the groove-shaped attachment 62 is the second.
It is attached so as to face the clamp 5. It is preferable that the attachments 61 and 62 be mounted so as to be suitable for the maximum diameter of the joint to be manufactured.

Next, the operation of the embodiment will be described.

When manufacturing a branch pipe joint using the fusion machine of the present invention, first, the synthetic resin pipe P1 having holes formed in the pipe wall is held by the first clamp 4, and the end portion is The second clamp 5 holds the synthetic resin pipe P2 formed in a shape corresponding to the hole of the synthetic resin pipe P1. At this time,
In the fusion machine of this embodiment, the first clamp 4 is rotatably attached to the first pedestal 2 and the second clamp 5 is rotatably attached to the second pedestal 3. The relative directions of the synthetic resin pipes P1 and P2 of the book can be set freely.

Then, the peripheral portion of the hole of the synthetic resin pipe P1 held by the first clamp 4 is brought into close contact with the chevron attachment 61 of the heater 6 installed between the first frame 2 and the second frame 3 so as to be in a molten state. And the pipe end of the synthetic resin pipe P held by the second clamp 5 is brought into close contact with the groove-shaped attachment 62 of the heater 6 and heated until a molten state is obtained. Each attachment 61,
If you attach the one that fits the maximum diameter of the joint that manufactures 62, starting with international standards with one attachment,
All tubing can be heated in common.

Next, the heater 6 is removed from between the first cradle 2 and the second cradle 3 and both synthetic resin pipes P1 and P2 are slid toward each other to melt the heating and melting surfaces at a predetermined pressure. To wear. Then, two synthetic resin pipes P1 and P2
Are fusion-bonded to each other in the directions held by the first clamp 4 and the second clamp 5.

That is, in the fusion-bonded joint of this embodiment, since two synthetic resin pipes can be fusion-bonded at an arbitrary angle, a branch pipe joint having a desired shape (the synthetic resin pipes are fused at right angles). Those that are bonded and joined, or synthetic resin pipes at 30 degrees, 45 degrees
And those which are fusion-bonded obliquely at an inclination angle of 60 degrees or the like) can be manufactured at low cost.

Now, a method of manufacturing a branch pipe joint in which synthetic resin pipes are fusion-bonded to each other at an inclination angle of 60 degrees will be described in detail.

First, the two synthetic resin pipes P1 and P2 are cut and processed. The two synthetic resin tubes have the same diameter. As shown in FIG. 4A, the synthetic resin pipe P1 has a V-shaped hole P10 having a right-angled bottom formed by cutting the pipe wall into a V-shape. At this time, the bottoms of the V-shaped holes P10 are located at two positions 180 degrees apart from each other on the outer circumference of the synthetic resin pipe P1, and one cut surface P11 is oriented at 60 degrees with respect to the pipe axis XX. , The other cut surface P12 is oriented at 30 degrees with respect to the tube axis XX. Also, the other synthetic resin pipe P
In No. 2, as shown in FIG. 4B, the pipe end is cut into a mountain shape to form a mountain portion P20 having a right angle. At this time, Yamabe P
The tops of the synthetic resin pipes P2 are located at two positions 180 degrees apart from each other on the outer periphery of the synthetic resin pipe P2, and one cut surface P21 is the pipe axis Y.
-The direction is 60 degrees with respect to Y, and the other cut surface P22
Is oriented at 30 degrees with respect to the tube axis Y-Y.

Next, the synthetic resin pipe P1 in which the V-shaped hole P10 is formed is held by the first clamp 4 of the fusion machine, and
The synthetic resin pipe P2 on which the mountain portion P20 is formed is the second of the fusion machine.
The clamp 5 holds it. At this time, the former synthetic resin pipe P
In No. 1, the V-shaped hole P10 faces the chevron-shaped attachment 61 of the heater 6, and in the latter synthetic resin pipe P2, the crest portion P20 faces the groove-shaped attachment 62 of the heater 6. Further, as shown in FIG. 5, the cut surfaces P11, P12 of the synthetic resin pipe P1 held by the first clamp 4 are cut.
The first pedestal 2 is rotated so that the angle becomes 45 degrees with respect to the sliding direction ZZ of the first pedestal 2 and the second pedestal 3, and
Cut surface P2 of the synthetic resin pipe P2 held by the clamp 5
1, P22 is the sliding direction Z- of the first mount 2 and the second mount 3.
The second pedestal 3 is rotated so that it becomes 45 degrees with respect to Z.
That is, the synthetic resin pipe P1 held by the first clamp 4
Is a synthetic resin held by the second clamp 5 by rotating the tube axis XX by 15 degrees in the direction of the arrow in the drawing from the state where the pipe axis XX is orthogonal to the sliding direction ZZ of the first gantry 2 and the second gantry 3. The pipe axis Y-Y of the pipe P2 is the sliding direction Z-Z of the first mount 2 and the second mount 3.
It will be rotated 15 degrees in the direction of the arrow in the figure from the state parallel to. At this time, the former synthetic resin pipe P1 needs to be held by the first clamp 4 so as to rotate around the bottom of the V-shaped hole P10. Similarly, the latter synthetic resin pipe P2 also needs to be held by the second clamp 5 so as to rotate around the top of the mountain portion P20. By doing so, the positions of the bottom of the V-shaped hole P10 of the synthetic resin pipe P1 and the top of the mountain portion P20 of the synthetic resin pipe P2 are the same as those before the rotation even after the rotation.

Then, the first mount 2 and the second mount 3 are slid in the directions approaching each other, and the cut surfaces P11, P12 of the synthetic resin pipe P1 held by the first clamp 4 are attached to the chevron attachment 61 of the heater 6. It is heated for a predetermined time until it is brought into close contact and a molten state is obtained, and the cut surfaces P21 and P22 of the synthetic resin pipe P2 held by the second clamp 5 are brought into close contact with the groove-shaped attachment 62 of the heater 6 to obtain the molten state. Heat for a predetermined time until. At this time, the synthetic resin pipe P
Cut surfaces P11 and P12 of No. 1 and cut surface P of the synthetic resin pipe P2
21 and P22 both approach the sliding direction ZZ of the first gantry 2 and the second gantry 3 at an angle of 45 degrees, and the heater 6
Since it closely adheres to all cut surfaces P11, P12, P2
The molten states of 1 and P22 are evenly obtained.

Next, after removing the heater 6 from between the first cradle 2 and the second cradle 3, the first cradle 2 and the second cradle 3 are slid toward each other so that the first clamp 4 is attached to the first clamp 4. The cut surfaces P11 and P12 of the held synthetic resin pipe P1 and the second
Cut surface P2 of the synthetic resin pipe P2 held by the clamp 5
1, P22 are brought into close contact with each other at a predetermined pressure and fused. At this time, the cut surfaces P11 and P12 of the synthetic resin pipe P1 and the synthetic resin pipe P
The two cut surfaces P21 and P22 are both the first mount 2 and the second mount 2.
Since they approach each other at an angle of 45 degrees with respect to the sliding direction Z-Z of the gantry 3 and are in close contact with each other, the fusion of the cut surfaces P11 and P21 inclined by 60 degrees with respect to the tube axes X-X and Y-Y. Strength and
Cut surface P1 inclined by 30 degrees with respect to the tube axes XX and YY
2, the fusion bonding strength between P22s is evenly obtained. That is,
Z acting on the cut surfaces P11 and P12 of the synthetic resin pipe P1
The component forces of the pressing force in the −Z direction are equal to each other, and the component forces of the pressing force in the ZZ direction acting in reaction on the cut surfaces P21 and 22 of the synthetic resin pipe P2 are equal to each other. The beads formed on the inner and outer surfaces of the bonded joint are uniform. As a result, a branch pipe joint having a uniform fusion bond strength can be obtained.

As shown in FIG. 6, the second clamp 5
Only the synthetic resin pipe P2 held at 30 ° is rotated (the pipe axis XX is 30 degrees in the direction of the arrow in the drawing from the state where the pipe axis XX is orthogonal to the sliding direction ZZ of the first frame 2 and the second frame 3), First clamp 4
When the synthetic resin pipe P1 held by the second clamp 5 is slid in a direction orthogonal to the pipe axis X-X and the synthetic resin pipe P2 held by the second clamp 5 is slid at an angle of 30 degrees, the pipe axis X −
Cutting planes P11 and P21 inclined by 60 degrees with respect to XY
The sections are in close contact with each other at an angle of 30 degrees with respect to the sliding direction ZZ of the first pedestal 2 and the second pedestal 3 and are inclined by 30 degrees with respect to the tube axes X-X and Y-Y. Since the P22s are in close contact with each other at an angle of 60 degrees with respect to the sliding direction ZZ of the first gantry 2 and the second gantry 3, their respective fusion strengths are likely to be uneven. Therefore, the cut surfaces P11, P1 of the synthetic resin pipe P1
2 and the cut surfaces P21 and P22 of the synthetic resin pipe P2 are both 45 with respect to the sliding direction Z-Z of the first frame 2 and the second frame 3.
Rotating the first clamp 4 and the second clamp 5 so as to form an angle of degrees is effective in obtaining even fusion strength.

That is, in the fusion machine of this embodiment, if the two synthetic resin pipes P1 and P2 are fusion-bonded as described above, a branch pipe joint having high fusion strength and good quality can be produced at low cost. Can be manufactured in.

The embodiment of the present invention has been described above with reference to the drawings. However, the specific configuration is not limited to this embodiment, and design changes and the like can be made without departing from the scope of the present invention. Even if it is included in the present invention. For example,
In the example, the fusion machine for fusion-bonding the synthetic resin pipes is shown, but the shape of the clamp is changed to fusion-bond the accessories to the synthetic resin pipe, or the pipe joint to the synthetic resin pipe. It can also be applied to a fusing machine used for joining and bonding. In addition, as a mechanism that allows the first and second clamps to rotate, for example, a mechanism that can rotate about a shaft that is erected on the first and second mounts (a part of a lathe where a cutting tool is attached). The same mechanism as the base) can be adopted.

[0033]

As described above, in the fusion machine of the present invention, since two synthetic resin pipes can be fusion-bonded at an arbitrary angle, a branch pipe having a desired shape can be obtained. The effect is that the joint can be manufactured at low cost.

[Brief description of drawings]

FIG. 1 is a plan view showing a fusion splicer of this embodiment.

FIG. 2 is a side view showing the fusion machine of the present embodiment.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 (a) is a side view showing a synthetic resin pipe for manufacturing a branch pipe joint. (B) It is a side view showing a synthetic resin pipe for manufacturing a branch pipe joint.

FIG. 5 is an explanatory diagram showing a relative relationship between two synthetic resin pipes.

FIG. 6 is a comparative explanatory view showing a relative relationship between two synthetic resin pipes.

[Explanation of symbols]

 1 Guide rail 2 1st mount 3 2nd mount 4 1st clamp 5 2nd clamp 6 Heater P1, P2 Synthetic resin pipe

Claims (3)

[Claims] 1. A first pedestal and a second pedestal are slidably supported in directions toward and away from each other, and a heater is installed between the first pedestal and the second pedestal, and is made of synthetic resin. First and second clamps formed so as to be able to hold resin molded products such as pipes and pipe joints and their accessories are rotatably attached to the first and second mounts, respectively. And a fusion machine. 2. The first clamp is configured such that, as the first clamp rotates, one resin molded product having a V-shaped groove formed on a pipe wall rotates about a deepest portion of the V-shaped groove. Hold the molded product, and the second clamp rotates as the second clamp rotates so that the other resin molded product having the chevron portion formed on the pipe wall rotates about the top of the chevron portion. The fusion machine according to claim 1, characterized in that the molded product is gripped by the mold. 3. The fusion machine according to claim 1, wherein the heater includes a groove-shaped attachment having a right angle V-shaped groove and a chevron attachment having a substantially right angled portion. ..