JP3026324B2 - Electric wire welding method and apparatus - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for joining ends of electric wires by welding.

[0002]

2. Description of the Related Art Conventionally, as a method of welding an electric wire, for example, as disclosed in Japanese Patent Application Laid-Open No. 50-53886, a high-temperature metal melt generated by a thermite reaction is poured into an end portion of the electric wire. It is known that the ends of the electric wires are melted by the heat of the melt, and the ends of the electric wires are pressed against each other and welded.

Japanese Patent Application Laid-Open No. 48-34049 discloses a method in which a welding material having good electrical characteristics with an electric wire is arranged at the terminal portion of the electric wire, and this is indirectly heated and melted from outside to weld. Is disclosed.

[0004] However, in the former method, there is a possibility that a molten metal produced by the thermite reaction remains in the welded portion of the electric wire and enters the welded portion of the electric wire. Therefore, there has been a problem that the electric resistance is out of the standard (Japan Cable Industry Association Standard JCS 251).

In the latter method, the molten welding material may flow from between the externally heated portion and the electric wire. As a result, the welding becomes insufficient due to the flow of the welding material, and the electric resistance is standardized (JCS Standard JCS).
251).

In order to solve such a problem, the present inventor has previously filed an application for an electric wire welding method and apparatus (Japanese Patent Application No. 5-49543). The method and apparatus for welding the electric wire will be described with reference to FIG.

In FIG. 1, reference numeral 31 denotes a housing. The housing portion 31 includes, for example, a medicine package outer cylinder 32 made of cardboard, a half-walled partition wall member 33 made of a tubular iron plate, a donut-shaped end plate 34, a heating agent 35, and an igniter 36.

The housing portion 31 is formed in advance by forming a cylindrical body with the medicine package outer cylinder 32, the partition member 33, and one end plate 34, and thereafter, the inside thereof is filled with the heating agent 35 and the igniter 36 is attached. , And finally by attaching the remaining end plates 34.

The cardboard envelope 32 made of cardboard has a thickness of 3 mm to 5 mm.
Is formed in a tubular shape. The donut-shaped end plate 34 is also made of cardboard similarly to the medicine package outer cylinder 32.

The partition member 33 made of a half-tubular iron plate is made of, for example, an iron plate having a thickness of about 1.5 mm. The half-walled partition wall member 33 made of a tubular iron plate can maintain its shape without melting up to about 1500 ° C.

The heating agent 35 is obtained by applying a redox reaction between a metal oxide and a metal or a metal alloy represented by a thermite reaction. Here, the composition ratio of the heating agent 35 is aluminum 25% by weight, iron-aluminum alloy 10% by weight, silicon iron 20% by weight, copper oxide 10% by weight, triiron tetroxide 20% by weight, ferric oxide It was 10% by weight and 5% by weight of manganese dioxide.

The heating agent 35 generates only heat and does not flow during heat generation. The igniter 36 communicates with a power source (not shown) to ignite the ignition charge and activate the heating agent 35.

An aluminum welding material 3 is accommodated in the accommodation portion 31.
7 are arranged. This aluminum welding material 37
The same or better quality aluminum material is used as the aluminum wires 38.

Here, as the aluminum welding material 37, an aluminum material having a purity of 99.9% or more is used. The melting point is 660 ° C. The size is set to be large enough to weld the two aluminum wires 38.

On both sides of the aluminum welding material 37, ends 38 of two aluminum electric wires 38, 38 to be connected are provided.
a, 38a are in contact. Aluminum wire 38,
38 is made of JIS H-2110 (aluminum metal for electrical use). The composition is Al 99.65% by weight or more, Si 0.10% by weight or less, Fe 0.25% by weight or less, Cu 0.005% by weight or less, Mn 0.005% by weight.
% By weight, and Ti + V is 0.005% by weight or less. The melting point is 660 ° C.

After the heat-resistant ceramic fibers are wound around the ends 38a, 38a of the aluminum electric wires 38, 38 for the length to be fitted into the accommodating portion 31, the ends are stopped with cellophane tape or the like. By attaching it, the hot water stopper 39 is formed.

The heat-resistant ceramic fibers forming the water stoppers 39, 39 have a raised surface, for example, like a felt. For this reason, it is easy to adapt to the unevenness of the electric wire surface, and the partition member 33 made of a half-tubular iron plate is used.
And the aluminum electric wire 38 can be closed to prevent the molten material of the aluminum welding material 37 from flowing out.

Next, the operation of the above-configured device will be described. First, after a cylindrical body is formed by the medicine package outer cylinder 32, the partition member 33, and one end plate 34, a heating agent 35 is filled therein. Next, the igniter 36 is attached to a place where the heating agent 35 is filled. Then, the accommodation portion 31 is formed by attaching the remaining end plate 34 at last.

Next, the aluminum welding material 37 is disposed in the housing 31. On the other hand, the two aluminum electric wires 38, 38 to be connected have their ends 38a, 38
a, a heat-resistant ceramic fiber is wound over a length that fits into the housing portion 31 and is fastened thereon with a cellophane tape or the like.
9, 39 are formed in advance.

The aluminum electric wires 38, 38 provided with the hot water stoppers 39, 39 are connected to the ends 3 of the two aluminum electric wires 38, 38 to be connected from both ends of the housing portion 31.
8a and 38a are inserted, and when their respective ends come into contact with the aluminum welding material 37, the movement is stopped.

In this state, the igniter 36 of the container 31 filled with the heating agent 35 that causes an oxidation-reduction reaction is operated to cause the heating agent 35 to react. The heat of oxidation-reduction reaction by the heating agent 35 is added to the aluminum welding material 37 via the partition member 33 of the housing portion 31 and is heated and melted. The molten aluminum is supplied to the end portions 3 of both aluminum electric wires 38, 38.
It flows along the surface of the electric wire from the portions 8a and 38a.

When the molten aluminum reaches the position of the metal stoppers 39, 39, the aluminum is prevented from flowing out to the outside by the partition wall member 33 and the metal stoppers 39, 39. After that, when the aluminum is cooled and solidified,
After destruction of 1, half of the partition wall member 33 is disassembled and the hot water stopper 39 is removed, whereby 2
Ends 38a, 38a of book aluminum electric wires 38, 38
Can be obtained by welding the aluminum electric wire 40 with the molten aluminum welding material 37.

At the time of the oxidation-reduction reaction of the heating agent 35,
The cardboard does not burn at a stroke, and the unburned heating agent 35 does not spill out of the medicine envelope 32 during the time from the ignition of the oxidation-reduction reaction to the completion of combustion.

As described above, in this example, the welded portion 41 of the aluminum welding material 37 melted by the reaction heat of the heating agent 35 is used to separate the partition member 33 of the accommodating portion 31 and the metal stoppers 39 and 3.
9 prevents outflow to the outside.

Further, since the welded portion is closed by the hot water stoppers 39, 39, the holding portion 31 can be used, for example, obliquely or vertically without holding the housing portion 31 in a horizontal posture at the time of welding.

As described above, the wire welding method and apparatus by the present inventor can eliminate all the disadvantages of the above-described conventional method and apparatus, prevent impurities from being mixed during heat welding, and provide a welding material. Can be prevented from flowing out.

[0027]

However, in the above-described method and apparatus for welding electric wires by the present inventors,
When the molten material of the heated electric wires 38, 38 and the welding material 37 changes from a molten state to a solidified state, it shrinks due to a change in volume, so that a generally called porosity is generated and, as shown in FIG. Sometimes the melt is welded to the wires 38,
A dent 42 is generated in the fused material by flowing through the gap at the end face of the fuselage 38.

For this reason, the welded portion (fused portion) 41 of the electric wire
There is a problem that the electrical resistance deviates from the standard (Japan Cable Industry Standard JCS 251). The present invention has been made to solve such a conventional problem, and an object thereof is to provide an electric wire welding method and an electric wire welding method capable of preventing a cavity and a dent in a welded portion of the electric wire. It is in.

[0029]

A first aspect of the present invention is to insert the ends of two electric wires to be connected into a welder with a welding material interposed therebetween.
In the electric wire welding method of heating and melting the welding material by the oxidation-reduction reaction heat and welding the ends of the two electric wires, the molten material of the welding material generated at the time of heating and melting is stored in a pool portion provided in the welding machine, The gas, such as gas and water vapor, generated at the same time is discharged to the outside through a gas exhaust passage provided in the welder, and the outflow of the molten material of the welding material during the heating and melting is applied to the ends of the two electric wires. prevented by mounting the hot water stop, the heating melting temperature decreases end, the melt starts to contract solidified, and write unnecessarily constituting flowing melt was accumulated in the hot water reservoir to the reduced portion Things.

According to a second aspect of the present invention, in the method for welding an electric wire according to the first aspect, a welding material is arranged and placed in a basin provided in the welder. Claim 3 is a medicine package outer cylinder, a heating agent which causes an oxidation-reduction reaction to be filled in the medicine package outer cylinder, a cylindrical partition member with a flange disposed inside the medicine package outer tube, and this partition member. A housing member formed of a stopper member to be fitted with the flange of the above, and a hot-water stopper inserted into the cylindrical partition wall member. The flange of the cylindrical partition wall member has a welding material substantially at the center. A communication portion communicating with the communication portion, a water pool portion communicating with the communication portion, and a gas exhaust passage communicating the water pool portion with the end of the flange. The gas exhaust passage and the partition member The exhaust passage is formed by the flange and the stop member.

According to a fourth aspect of the present invention, in the electric wire welding apparatus of the third aspect, the medicine envelope is formed of a ceramic material. According to a fifth aspect of the present invention, in the electric wire welding apparatus of the third aspect, the stop member is formed of a ceramic material.

[0032]

In the first and third aspects, first, a stopper member is attached to the flange of the cylindrical partition member. Next, after a cylindrical body is formed by the medicine package outer cylinder and one end plate of the partition member, a heating agent that causes an oxidation-reduction reaction is filled therein.
Then, the accommodation part is formed by attaching the other end plate of the partition member.

Next, a welding material is placed in the housing. After that, two electric wires to be connected, each of which is provided with a metal stopper at its end, are inserted from both ends of the partition wall member, and when their ends abut against the welding material, the movement is stopped.

Next, the two electric wires are opposingly pressed by a holding jig with a normal spring force and joined. In this state, an igniter is attached to the housing portion, and the igniter is ignited to react the heating agent. The heat of oxidation-reduction reaction by the heating agent heats and melts the welding material via the partition wall member of the storage section.

At this time, a part of the molten welding material passes through the communicating portion of the flange and accumulates in the pool. At the same time, gas,
Gas such as water vapor is generated, and this gas is exhausted to the outside through an exhaust passage formed by the flange of the partition member and the stopper member, through a gas exhaust passage communicating with the water pool.

Further, the molten welding material flows out from the terminal portions of both wires along the surface of the wires. Then, when the molten welding material reaches the position of the stopper, the outflow to the outside is prevented by the partition member and the stopper, and is cooled and solidified at the position of the stopper.

Thereafter, when the heating is completed and the temperature is lowered by heat radiation, the fused portion starts to solidify and, at the same time, starts to contract. At this time, the melt of the welding material that has been stored in the hot water reservoir is seen flow into the recessed portion or the blow hole of the contraction portion of the fusion part,
Prevents the formation of dents and voids in the welded part.

In the second aspect, first, a welding material is disposed in a pool of water formed in a flange of a cylindrical partition wall member, and then a stopper member is attached to the flange. Next, after a cylindrical body is formed by the medicine package outer cylinder and one end plate of the partition member, a heating agent that causes an oxidation-reduction reaction is filled therein. Then, the accommodation part is formed by attaching the other end plate of the partition member.

Next, a welding material is arranged in the housing. After that, two electric wires to be connected, each of which is provided with a metal stopper at its end, are inserted from both ends of the partition wall member, and when their ends abut against the welding material, the movement is stopped.

Next, the two electric wires are opposingly pressed by a holding jig with a normal spring force and joined. In this state, an igniter is attached to the housing portion, and the igniter is ignited to react the heating agent. The heat of oxidation-reduction reaction by the heating agent heats and melts the welding material via the partition wall member of the storage section.

At this time, a part of the molten welding material passes through the communicating portion of the flange and accumulates in the pool. Also, the welding material disposed in the pool is heated and melted.

At the same time, gas such as gas and water vapor is generated, and this gas passes through a gas exhaust passage communicating with the water pool, and from an exhaust passage formed by the flange of the partition member and the stopper member. It is exhausted to the outside.

Further, the molten welding material flows out from the terminal portions of both electric wires along the surfaces of the electric wires. Then, when the molten welding material reaches the position of the stopper, the outflow to the outside is prevented by the partition member and the stopper, and is cooled and solidified at the position of the stopper.

Thereafter, when the heating is completed and the temperature is lowered by the heat radiation, the fused portion starts to solidify and, at the same time, starts to contract. At this time, the melt of the welding material that has been stored in the hot water reservoir is seen flow into the recessed portion or the blow hole of the contraction portion of the fusion part,
Prevents the formation of dents and voids in the welded part.

According to the fourth aspect, the trace gas generated during the combustion is released to the outside from the wall surface of the air-permeable ceramic medicine package outer cylinder. After the combustion, the generated heating agent slug is held and kept warm by a ceramic medicine envelope until welding of the electric wire is completed.

According to the fifth aspect, the heating agent slug generated after the combustion is held and kept warm by the ceramic stopper member until welding of the electric wire is completed.

[0047]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention; FIG. 1 shows an embodiment in which the electric wire welding method according to claim 1 and the electric wire welding apparatus according to claim 3 are applied to the welding of aluminum electric wires.

In the drawing, reference numeral 1 denotes a housing. The storage section 1 includes, for example, a medicine package outer cylinder 2 made of cardboard, a half-walled cylindrical iron plate-made partition member 3, two stop members 4, a donut-shaped end plate 8, a heating agent 9, an ignition device 7, and the like. Consists of

The housing portion 1 is formed by forming a tubular body in advance with the medicine package outer cylinder 2, the partition member 3 and one end plate 8, and then filling the inside thereof with the heating agent 9 and the remaining end plate 8. Attach. Finally, it is formed by attaching the igniter 7.

The medicine package outer cylinder 2 made of cardboard is formed by forming cardboard having a thickness of 3 mm to 5 mm into a cylindrical shape. Donut-shaped end plate 8
Similarly, the medicine envelope 2 is made of cardboard. The partition member 3 made of a half-tubular tubular iron plate has flanges 3a, 3b at both ends.
Having. One flange 3a is longer than the other flange 3b.

As shown in FIG. 3, a concave portion 3c for forming a pool 15 and a concave portion 3d for forming a communication portion 17 are provided at substantially the center of one of the elongated flanges 3a.
And a concave groove 3e for forming a passage 16 for gas exhaust.

This half-walled tubular iron plate-made partition member 3 is
For example, it is constituted by an iron plate having a thickness of about 1.2 mm. The partition wall member 3 made of a half-tubular iron plate can maintain its shape without melting up to about 1500 ° C.

The partition member 3 made of a half-sectioned tubular iron plate is
The flanges 3a and 3b are fitted with a metal stopper member 4 having a substantially U-shaped cross section to form a cylindrical body. The stop member 4 is, for example, an arc portion 4a having a diameter of 2.4 mm.
Is formed so as to be formed.

As a result, as shown in FIG. 3, when the flanges 3a, 3b of the partition wall member 3 made of a half-tubular iron plate are fitted, the exhaust space is provided between the flanges 3a, 3a and the arc portion 4a. A passage 11 is formed.

The heating agent 9 is obtained by applying an oxidation-reduction reaction between a metal oxide and a metal or metal alloy represented by a thermite reaction. In this embodiment, the composition ratio of the heating agent 9 is 25% by weight of aluminum, 10% by weight of an iron-aluminum alloy, 20% by weight of silicon iron, 10% by weight of copper oxide, 20% by weight of ferric oxide, and Ferrous iron was 10% by weight and manganese dioxide was 5% by weight.

The heating agent 9 generates only heat and does not flow during heat generation. The igniter 7 communicates with a power source (not shown) to ignite the ignition charge and activate the heating agent 9.

An aluminum welding material 12
Is arranged. The aluminum welding material 12 is made of the same or better quality aluminum material as the aluminum electric wires 13.

In this embodiment, as the aluminum welding material 12, an aluminum material having a purity of 99.9% or more is used. The melting point is 660 ° C. In addition, the size is set to be large enough to weld the two aluminum electric wires 13.

On both sides of the aluminum welding material 12, the end portions 13 of the two aluminum electric wires 13, 13 to be connected are provided.
a, 13a are in contact. Aluminum wire 13,
Reference numeral 13 is made of JIS H-2110 (aluminum metal for electrical use). The composition is Al 99.65% by weight or more, Si 0.10% by weight or less, Fe 0.25% by weight or less, Cu 0.005% by weight or less, Mn 0.005% by weight.
% By weight, and Ti + V is 0.005% by weight or less. The melting point is 660 ° C.

Around the end portions 13a of the aluminum electric wires 13, 13a, a heat-resistant ceramic fiber is wound over a length to be fitted into the accommodating portion 1, and a cellophane tape, a glass fiber The stopcock 14 is formed by fastening with a tape or the like using.

The heat-resistant ceramic fibers forming the water stoppers 14, 14 have a raised surface, for example, like a felt. For this reason, it is easy to adapt to the irregularities on the surface of the electric wire, and the space between the partition wall member 3 made of a half-tubular iron plate and the aluminum electric wire 13 can be closed, so that the melt of the aluminum welding material 12 can be prevented from flowing out.

Next, the operation of the present embodiment configured as described above will be described. First, after the flanges 3a and 3b of the partition member 3 are overlapped, the stopper member 10 is fitted. Next, after a cylindrical body is formed by the medicine package outer cylinder 2, the partition member 3 and one end plate 8, a heating agent 9 is filled therein. Next, the remaining end plate 8 is attached. Finally, the housing part 1 is formed by attaching the igniter 7 to a place where the heating agent 9 is filled.

Next, the aluminum welding material 12 is arranged in the housing 1. On the other hand, the two aluminum electric wires 13, 13 to be connected have their respective ends 13a, 13a in advance.
A heat-resistant ceramic fiber is wound over a length that fits into the housing portion 1 and is fastened thereon with cellophane tape, tape using glass fiber, etc. Is formed.

The aluminum wires 13, 13 provided with the water stoppers 14, 14 are connected to the ends 13 of the two aluminum wires 13, 13 to be connected from both ends of the housing 1.
a and 13a are inserted, and when their respective ends come into contact with the aluminum welding material 12, the movement is stopped.

In this state, the igniter 7 of the container 1 filled with the heating agent 9 causing an oxidation-reduction reaction is operated to
Is reacted. The heat of oxidation-reduction reaction by the heating agent 9 is
Aluminum welding material 12 via partition member 3 of accommodation portion 1
And melted by heating.

At this time, the molten aluminum welding material 12
Passes through the communicating portion 17 formed by the recesses 3d of the flanges 3a, 3a, and the recesses 3c, 3c of the flanges 3a, 3a.
Is accumulated in the hot water pool portion 15 formed by the above.

At the same time, gas such as gas and water vapor is generated, and this gas is supplied to the flange 3 communicating with the pool 15.
Through the gas exhaust passage 16 formed by the concave grooves 3e, 3e of the a, 3a, from the passage 11 between the upper side of the flanges 3a, 3a of the partition member 3 and the arc portion 4a of the stop member 4, to the outside. Is discharged.

The melted welding material is used for both electric wires 13 and 1.
3 flows out along the surface of the electric wire from the terminal portion. Also,
The molten aluminum is used for both aluminum electric wires 13,1
3 flows along the surface of the electric wire from the end portions 13a, 13a.

When the molten aluminum reaches the position of the stopcocks 14, 14, the outflow to the outside is prevented by the partition member 3 and the stopcocks 14. After that, the heating is finished, the temperature is lowered by preheating, and when the fused portion starts to solidify, it starts to shrink at the same time.

[0070] At this time, the melt of the welding material that had been stored in the hot water reservoir 15, only flow into the recess and chairs part of the contraction of the fused portion, of the fused portion dents and chairs of occurrence To prevent Then, when the aluminum was cooled and solidified,
, The half-wall partition member 3 is disassembled, and
By removing 4, an aluminum electric wire welded with a molten aluminum welding material can be obtained in the same manner as the welding electric wire 40 shown in FIG. 6.

During the oxidation-reduction reaction of the heating agent 9, the cardboard does not burn at a stretch, and the unburned heating agent 9 is not burned during the time from the ignition of the oxidation-reduction reaction to the completion of combustion.
Is not spilled from the medicine package outer cylinder 2.

As described above, in the present embodiment, when the aluminum welding material 12 is heated and melted by the reaction heat of the heating agent 9, a part of the molten material is transferred through the communicating portion 17 to the pool 15.
At the same time as the gas flows into and is stored therein, gas, steam, and the like generated during heating and melting do not stop in the partition member 3.
Since the exhaust gas is exhausted through the passage 11 communicating to the outside through the passage 16 formed by the concave grooves 3 e provided in the flange 3 a, the melt that tends to flow out due to the volume expansion of the aluminum welding material 12 is not allowed. And can flow into the hot-water pool portion 15.

When the temperature is lowered after the completion of the heating and melting, and the molten material starts to solidify and shrink, the molten material stored in the pool 15 at the shrinking portion is removed by the electric wires 1.
Since it is configured to flow into the welding portions 3 and 13, it is possible to cover the cavities due to bubbles and the cavities due to shrinkage as shown in FIG. 7 and prevent the cavities and cavities.

Further, as shown in FIG. 2, since the hot water reservoir 15 is arranged at a position close to the center of the housing 1, even if the heating by the heating agent 9 is completed, the hot water is heated by the preheating. Therefore, the molten material of the aluminum welding agent 12 stored inside is not rapidly cooled.

Therefore, when the cooling at the welding site is started, the molten aluminum welding material 12 can be reliably supplied. Further, the welded portion of the molten aluminum welding material 12 is formed by the partition member 3 of the accommodating portion 1 and the metal stopper 1.
4 and 14 prevent the outflow to the outside.

Further, since the welded portion is closed by the hot water stoppers 14, 14, the container 1 can be used, for example, obliquely or vertically without holding the housing 1 in a horizontal posture during welding.

In the above embodiment, the case where the heat-melted aluminum is temporarily stored in the pool 15 has been described. However, as described in claim 2, the aluminum welding material 12 is previously stored in the pool 15. A welding material of the same quality as that described above may be arranged and placed.

In this case, the molten metal to be replenished separately from the aluminum welding material 12 abutting on the electric wires 13 and 13 is ensured in the pool 15 so that pits and cavities during cooling are ensured. Can be reliably prevented.

Further, in the above embodiment, the case where the hot water stopper 14 is formed by fixing the heat-resistant ceramic fiber to the ends 13a of the aluminum electric wires 13, 13 has been described. Hei 5-49543
As in the case of the above, the heat stopper may be formed by fixing a heat-resistant ceramic fiber to the end of the aluminum electric wire, and then attaching a half-split member made of iron, stainless steel or an aluminum alloy to the rear. .

In this case, the heat generated by the heating agent is transmitted to half of the members, thereby heating the aluminum electric wire and preventing heat loss during welding. Although not shown, the hot water stopper may be formed of a half-split member made of iron, stainless steel, or an aluminum alloy.

Further, in the embodiment shown in FIG. 1, the hot water stopper 14 is formed by fixing a heat-resistant ceramic fiber, but instead of this, silica or / and alumina or a compound thereof is mainly used. A paste-like sealing material made of an inorganic compound as a component may be provided.

Since the paste-like sealing material is a clay-like material, the aluminum electric wire 13 and the partition member 3
Can be in close contact. In addition, since the paste-like sealing material can be easily broken even after drying, the removal operation becomes easy.

In the embodiment shown in FIG. 1, the heat stopper 1 is fixed by fixing a heat-resistant ceramic fiber.
In this embodiment, a molded body made of silicon oxide, aluminum oxide, or a compound of silicon oxide and aluminum oxide may be used.

In this case, it is not divided in half, but is made into a tubular body and broken after welding. This simplifies the removal operation. Further, by using a tubular body, there is no need to worry about leakage from the mating portion as in the case of a half-split, and the effect of retaining the water is improved.

Moreover, they are harmless and easy to dispose of. Further, in the case of this water stopper, if the shape matches the surface shape of the aluminum electric wire 13, the space between the aluminum electric wire 13 and the partition member 3 of the housing portion 1 can be closed tightly, and the molten aluminum welding material 12 can be prevented from flowing out.

Further, since the hot water stopper is a material having high heat resistance, it does not deteriorate due to the heat of the molten aluminum welding material 12 or the heating agent 9. In addition, since it is a tubular body, there is no need to worry about leakage from the mating portion as in the case of a half, and the pouring effect is improved.

Further, according to the present invention, the partition member 3 and the metal stopper 14 are made longer than the medicine package outer cylinder 2, and the metal stopper 14 is provided with fins so that the molten aluminum welding material 12 can be effectively melted. It may be cooled.

In the above embodiment, the medicine package outer cylinder 2 has been described as being made of cardboard. However, in the medicine package outer cylinder 2 made of cardboard, the exothermic composition contained in the medicine package outer cylinder 2 is carbonized by high temperature during combustion. The thick paper may be peeled off by burning due to the heat of the exothermic agent, so that the heat retaining effect of the combustion slag of the exothermic agent may vary.

Therefore, in order to solve this problem, a medicine envelope 2 made of a ceramic material containing silica, alumina and a binder as main components as described in claim 4 is provided.
Can be used.

[0090] Here, the ceramic material, the ceramic fibers were formed into a cylindrical shape, if example embodiment, facilities a surface hardening treatment impregnating the inorganic binder such as an organic binder or colloidal silica, such as acrylic copolymers, painting and the like It was done.

The ceramic envelope 2 has a cylindrical shape or a partially uneven thickness cylindrical shape, but is not limited to a cylindrical shape but may be a square cylindrical shape. This ceramic medicine envelope 2
Is used, the end plate 8 is similarly replaced with ceramic.

When the ceramic medicine envelope 2 is used as described above, a small amount of gas generated by the oxidation-reduction reaction by the heating agent 9 and moisture contained in the heating agent 9 become steam, and during combustion, the ceramic Medicine envelope 2, end plates 8, 8
It is released to the outside.

At this time, the molten material of the welding material stored in the pool 15 is kept warm even after the heating agent 9 is burned by the ceramic medicine envelope 2 for retaining the original shape. To flow into the recesses and cavities in the shrinking portion of the slab to prevent the formation of dents and cavities in the fused portion.

In the above-described embodiment, the case where the metal stopper member 4 having a substantially U-shaped cross section is used has been described. Alternatively, it can be made of ceramic.

In order to prevent the exothermic agent and the combustion residue from adhering to the material to be welded, for example, Japanese Patent Publication No. 48-40473 discloses the use of asbestos, glass fiber, a metal plate, and the like. It discloses the use of asbestos, glass fiber, a metal plate, or the like having an exhaust hole for heat retention for effectively utilizing combustion heat.

[0096] However, asbestos is a carcinogen and its use is restricted. In glass fiber,
Due to the difficulty in heat resistance, the gas generated when the exothermic agent is burned is sealed inside the medicine package in the thin metal plate pharmaceutical envelope, and an air pocket is generated in the welded portion, so that welding reliability is lacking.

On the other hand, as described above, the use of the ceramic medicine envelope has the advantage that the temperature of the combustion slag of the heating agent can be kept constant and the combustion gas can be released.

Further, the case where the medicine package outer cylinder 2 and the end plates 8 and 8 are used and the case where the ceramic stopper member 4 is used have been described. It is expected that better effects can be obtained by making both the ceramics 8 and 8 and the stopper member 4 made of ceramic.

Although the welding of the aluminum electric wire 13 has been described in each of the above embodiments, the present invention is not limited to this. For example, it can be applied to welding of copper electric wires. The copper electric wire is specified in JIS H-2123 (Tough pitch type copper is used as a material). The melting point is 1084 ° C.

The copper welding material is of the same quality as the copper wire and has a Cu content of 99.90% by weight or more. The melting point is 1084 ° C. Further, in the present invention, the electric wire is
It may be a single wire or a stranded wire, and is not particularly limited.
In connection between the two, welding is possible even if one is a single wire and the other is a stranded wire.

[0101]

As described above, according to the first and third aspects, the molten material of the welding material generated at the time of heating and melting is temporarily stored in the pool, and the generated gas, gas such as water vapor, etc. Is exhausted through a gas exhaust passage provided in the flange of the partition wall member and a passage formed by the flange and the stopper member of the partition wall member, and the pit formed during cooling the molten material stored in the pool at the time of cooling. And cavities are reliably prevented.

Further, since the partition plate is provided between the heating agent and the electric wire, impurities from the heating agent do not enter the welding portion of the electric wire. Furthermore, since a metal stopper is disposed between the welding material, the electric wire and the partition plate, it is possible to prevent the welding material melted by the heating agent from flowing through the gap between the electric wires and to be welded. Be certain.

According to the second aspect of the present invention, the welding material of the same quality as the welding material is previously arranged and placed in the basin portion, so that the basin portion is supplemented separately from the welding material abutted on both electric wires. As a result, the melt to be formed is secured, and dents and cavities during cooling can be reliably prevented.

According to the fourth aspect of the present invention, since the medicine package outer cylinder is formed of a highly permeable ceramic, a small amount of gas generated during combustion from the heating agent, water vapor of moisture in the heating agent, and the like. Gas is released from the ceramic envelope.

Further, even after the heating agent is burned, the ceramic medicine package is kept warm and hardened, and flows into the recessed portion or the cavity of the contracted portion of the fusion portion, and the generation of the recessed portion or the cavity of the fusion portion is generated. To prevent. Further, according to the fifth aspect, even after the heating agent is burned, the ceramic medicine package outer casing flows into the recessed portion or the casting cavity of the contracted portion of the fused portion due to the heat-retaining and hardening, and the recessed portion of the fused portion or the casting cavity is formed. Prevent nest development.

[Brief description of the drawings]

FIG. 1 shows a method for welding an electric wire according to claim 1 and claim 3.
1 is a cross-sectional view showing an embodiment in which the electric wire welding apparatus according to the present invention is applied to welding of an aluminum electric wire.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is an enlarged sectional view of a main part of FIG.

FIG. 4 is a perspective view of a partition member of FIG. 1;

FIG. 5 is a cross-sectional view showing an embodiment in which the electric wire welding method and the electric wire welding apparatus according to Japanese Patent Application No. 5-49543 are applied to aluminum electric wire welding.

FIG. 6 is a sectional view showing the aluminum electric wire welded according to FIG. 5;

FIG. 7 is a sectional view showing the aluminum electric wire welded according to FIG. 5;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage part 2 medicine package outer cylinder 3 Partition member 3c, 11 Passage 4 Stopping member 9 Heating agent 12 Aluminum welding material 13 Aluminum electric wire 13a End of aluminum electric wire 13 14 Hot water stopper 15 Hot water pool 16 Gas exhaust passage 17 Communication department

────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Kimiharu Sato Nishisaka Village, Nishishirakawa-gun, Fukushima Prefecture Osamu Nagasaka 2-1, Nippon Koki Co., Ltd. (72) Inventor Hideaki Kikuchi 1-8-1 Hisamoto, Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture Inside Asahi Electric Co., Ltd. (72) Eiji Nishida 1, Kusu-ku, Takatsu-ku, Kawasaki-shi, Kanagawa Prefecture No. 8-1, Asahi Electric Co., Ltd. (72) Inventor Norio Ueno 1812, Yamada, Imaizumi, Nagai City, Nagai City, Yamagata Prefecture Asahi Electric Co., Ltd. Nagai Laboratory (56) References JP-A-48-34049 (JP, A) 50-53886 (JP, A) JP-A-6-267633 (JP, A) JP-A-6-310249 (JP, A) Yoshiki Ibi, Seita Ikeda, Hideaki Kikuchi, Eiji Nishida "Aluminum Basic Study "Heisei about the melting connection construction method of the line than gold six years the Institute of Electrical Engineers of power and energy sector competition Vol. 5 No. 2 p. 681-682 (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 4/02 H01R 43/02 H02G 1/14 H02G 15/08

Claims (5)

(57) [Claims] 1. An end of two wires to be connected, which is inserted into a welder with a welding material interposed therebetween, and the welding material is heated and melted by heat of oxidation-reduction reaction to weld the ends of the two wires. In the welding method, the molten material of the welding material generated at the time of heating and melting,
The molten material of the welding material at the time of heating and melting while accumulating in the hot water pool provided in the welder and simultaneously discharging gas, such as gas and water vapor, to the outside through the gas exhaust passage provided in the welder. Is prevented by a hot-water stopper attached to the ends of the two electric wires. When the heating and melting are completed and the temperature decreases, and the molten material starts to solidify and shrink, the shrinkage portion is filled with a hot-water pool. welding method of the wire, characterized in that the write unnecessarily constituting flowing melt which has been accumulated. 2. The electric wire welding method according to claim 1, wherein a welding material is arranged and placed in a basin provided in the welder. 3. A medicine package, a heating agent filled in the medicine package, which causes an oxidation-reduction reaction, a cylindrical partition member with a flange disposed inside the medicine package, and the partition member A housing member formed of a stopper member to be fitted with the flange of the above, and a hot-water stopper inserted into the cylindrical partition wall member. The flange of the cylindrical partition wall member has a welding material substantially at the center. A communication portion communicating with the communication portion; a pool portion communicating with the communication portion; and a gas exhaust passage connecting the pool portion and an end portion of the flange. The gas exhaust passage and the partition member are formed. An electric wire welding apparatus characterized in that an exhaust passage is formed by the flange and the stopper member. 4. The electric wire welding apparatus according to claim 3, wherein the medicine envelope is formed of a ceramic material. 5. The electric wire welding apparatus according to claim 3, wherein the stop member is formed of a ceramic material.