JPH0732139A - Roller type soldering jig - Google Patents

Abstract

PURPOSE:To provide a roller type soldering jig suitable for continuously soldering the prescribed overlap margin at overhead working. CONSTITUTION:A roller type soldering jig 10 is provided with a pair of brackets 18 arranged in fork shape at the tip of a grip 12, a cooling roller 26 and heat storing roller 28 supported by each bracket free to rotate, a heater 22 placed inside the heat storing roller 28 and a power feeding cord 30 connected to the heater 22 through the grip 12, on the surface of the heat storing roller 28 in the peripheral direction perpendicular to the longitudinal direction plural heat dissipating grooves 32 are engraved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roller-type soldering jig suitable for soldering steel plates and galvanized steel plates with a certain degree of overlap without any gap.

[0002]

2. Description of the Related Art For example, in a room where a magnetic resonance diagnostic apparatus in a hospital or the like or a device such as a computer which is easily affected by magnetism or radio waves is installed, a steel plate is used in the room.
It is electromagnetically shielded by being surrounded by a magnetic plate such as a galvanized steel plate.

In this case, when a gap is created at the joint between the magnetic plates, magnetism and radio waves leak from this gap. Therefore, a lap margin is provided at the joint between the magnetic plates to fix it to the indoor base, and to overlap. The gaps are eliminated by applying solder along the margins, and the magnetic plates are electrically connected to each other.

As this connection method, for example, in the case of a ceiling surface, as shown in FIG. 3, an interior base material 2 made of a veneer plate or the like is fixed to one surface of the lower surface of a steel aggregate 1 framed under a slab. A structure in which a galvanized steel plate 3 is adhered and fixed to the lower surface is adopted, and adjacent steel plates 3 are stacked with a predetermined overlapping margin.

Then, after the inner sticking of the steel plates 3 is completed, the solder iron 5 is pressed against the solder 4 while the solder 4 is being supplied along the small portions of the overlapping portions 3a of the steel plates 3, and the solder is melted by the heat and overlapped. The small portion of the portion 3a was fixed by soldering and adhered.

[0006]

However, in this joining method, the work is directed upward, especially on the ceiling surface, and the solder iron 5 must be pushed to the target position with one hand while the solder 4 is being fed out. Since it does not happen, the molten solder was likely to fall off and required skill to work.

Further, while the heating portion 5a of the soldering iron 5 is in point contact with the edge by almost point contact, the heat radiation area of the steel sheet is large, so that the temperature is hard to rise, and it takes time for the soldering work, and after the soldering, the overlapping portion is formed. When the small edge portion of 3a is biased in the opening direction, the overlapping portion 3a must be pressed by another roller or the like until it is cooled and solidified. It was hanging.

When this joining method is applied to a wall surface or a floor surface, the work is performed laterally or downward, and although the labor is not as great as that of the ceiling surface, similar labor is required.

[0009] Therefore, the applicant of the present invention preliminarily solder-plats the overlapped portions of the magnetic plates, and overlaps and fixes the magnetic plates on the surface of the overlapped portion in a state where the magnetic plates are overlapped and fixed on the base in the chamber. We have developed a method of pressing a soldering iron having a heating portion having a width corresponding to the above and moving it along the overlapping portion.

It is an object of the present invention to provide a roller-type soldering jig suitable for the above-mentioned upward work and continuously soldering a predetermined overlapping portion.

[0011]

In order to achieve the above object, the present invention provides a pair of brackets arranged in a bifurcated shape at the tip of a handle, and a rotatably borne bearing for each bracket and a soldering portion. A roller-type soldering jig including a roller set according to a width, a heater disposed inside at least one roller, and a power supply cord connected to the heater through the grip handle, the surface of the roller. Is provided with a plurality of heat dissipation grooves in the circumferential direction orthogonal to the length direction.

[0012]

According to the above construction, the roller having the heater built in is moved forward while pressing each roller against the surface of the overlapping portion of the plates to be bonded as the leading side, whereby the roller rolls and the width of the overlapping portion increases. Since the pre-plated solder is entirely melted, the heat transfer efficiency is high and the solder can be melted instantly. After the roller on the heater side has moved, it is pressed down by the roller and is cooled to bond the entire overlap area in a close contact state. The temperature of the roller on the heater side is maximized at the center of the roller due to the heat of the heater and tends to be low on both sides.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a perspective view of a soldering jig according to the present invention. In the figure, this soldering jig 10 is provided with a horizontal grip handle 12, a pair of frames 14 projecting from both sides of the grip handle 12, and swingable via pins 16 at the tip of each frame 14. The V-shaped bracket 18 and
A tubular heater 22 fixed at both ends to one side of each bracket 18 via electrode terminals 20, a cooling roller 26 rotatably supported on the other side of each bracket via a bearing pin 24, and A heat storage roller 28 rotatably supported on the outer circumference of the heater 22 is provided. And
A power supply cord 30 is connected to each of the electrode terminals 20, and the power supply cord 30 is led out through the handle 12 and is connected to an external power source.

Each of the rollers 26 and 28 is made of a metal having a high heat transfer coefficient such as copper, and a plurality of heat dissipation grooves 32 are formed on the surface of the heat storage roller 28 at right angles to the longitudinal direction thereof. .

A method of joining the ceiling surface of the electromagnetic shield room using the above soldering jig 10 is as shown in FIG. 2 (a). It should be noted that in FIG. 2, the same parts as those in the related art are designated by the same reference numerals, and different parts are designated by different reference numerals.
This is the same as the conventional one, in which the interior base material 2 made of a veneer plate or the like is fixed to one surface of the steel aggregate 1 framed under the slab with bolts, and the galvanized steel plate 4 is attached to the lower surface.
It is a structure in which 0 is adhered and fixed.

The overlapping portion 4 of the steel plates 40 adjacent to each other
One of the 0a has a flat shape, and the other overlapping portion 40b is bent into an L-shape according to the overlapping thickness and overlaps with a predetermined overlapping dimension D. Is pre-plated with solder 42,
Solder 42 is similarly plated on the inside of the L-shape of the overlapping portion 40b of the other steel plate 40.

Therefore, when the inner surface of the ceiling surface is completed, the overlapping portions 40a and 40b are pressure-bonded to each other via the solders 42, and the thickness of the overlapping portions 40a and 40b keeps them in close contact with each other. It is pressed and urged.
It should be noted that the solder 42 may contain flux in advance, or may be applied at the time of attachment.

After that, the grip handle 1 of the soldering jig 10
While holding 2 in the hand of the operator, the rollers 26 and 28 are moved while being pressed against the surface side of the overlapping portion 40b while rolling. The lengths of the cooling roller 26 and the heat storage roller 28 are equal to the overlapping dimension D of the overlapping portions 40a and 40b.

At this time, power is supplied to the heater 22 in advance to heat the heat storage roller 28, and the heat storage roller 28 is positioned on the advance side and the cooling roller 26 on the delay side in the traveling direction, so that the heat storage roller 28 is pressed. The solder 42 in the open portion is instantly heated and melted with each other, and then the cooling roller 26 is pressed to remove the heat from the overheated surface in an instant and cooled, and the overlapping portions 40a and 40b are in close contact with each other and the solder 4
2 is cooled and solidified, and joined in a close contact state.

At this time, the surface of the heat storage roller 28 has the overlapping portion 4
Although heat is taken by 0a and 40b, since a new hot surface is pressed by rolling, uniform heating can be performed. Further, the cooling roller 26 side is heated by drawing heat from the surface, but likewise radiates heat by rolling, so that the cooling action can be continued.

The molten state of the solder can be confirmed by seeping a small amount of the molten solder with the flux vapor from the small portion of the overlapping portion 40b.

Therefore, the operator only has to move the soldering jig 10 while observing this state, so that the soldering work is extremely simplified, and the joint portion is formed over the entire overlap area of both steel plates 40. Since it extends, reliable joining can be performed.

The heat storage roller 28 during the above work
If the entire surface of the sheet hits the overlapping portion 40b,
As shown in (b), the surface temperature distribution is highest in the center according to the heating distribution of the heater 22 as shown by the broken line in the figure,
The characteristics become lower toward the periphery. In this case, if the center portion is set equal to the melting temperature of the solder 42, the surroundings are not melted and the solder becomes defective. Conversely, if the both ends are set to the melting temperature of the solder, the center is overheated and the solder 4
No. 2 softens, and solder failure also occurs.

However, in actuality, the heat dissipation portion is divided by the heat dissipation groove 32, and as shown by the solid line in the figure, the heat dissipation groove 32 serves as an average temperature characteristic, and as a result, the entire contact surface has a uniform temperature. Thus, the solder 12 can be melted at an appropriate temperature while being prevented from overheating.

It is to be noted that, even on the wall surface and the floor surface, the joining work can be carried out in the same work form, and the respective steel plates 40 cover the entire inside of the electromagnetic shield room without any gap, and the respective steel plates 40 are electrically connected. Can be connected together.

Further, in the embodiment, the heat storage roller 28 and the cooling roller 26 are distinguished from each other, but both of them are rollers having the heater 22 built-in, and both can be heated by a switch or the like so that either one can be heated. You may do it.

[0028]

As described above in detail with reference to the embodiments, in the soldering jig according to the present invention, the roller having the heater is mounted on the surface of the overlapping portion of the plates to be bonded as the leading side. By moving the roller while pressing it, the roller rolls and melts the pre-plated solder over the entire width of the overlapping portion, so the heat transfer efficiency is high, the solder can be melted instantly, and the roller on the heater side moves. After that, the entire overlap area is bonded in close contact by cooling while holding it down by the rollers, so it is easier and more reliable to fill the gaps in the bonding part without requiring skill in comparison to the conventional soldering work with a soldering iron. You can Also, the temperature of the roller on the heater side is maximized at the center of the roller due to the heat of the heater and tends to be low on both sides, but the temperature is averaged by the heat dissipation groove and the entire rolling surface is heated at a uniform heating temperature. Therefore, problems due to overheating can be prevented.

Therefore, according to the present invention, the adherends having a large heat radiation area can be faced upward by the work such as when fixing the magnetic plate to the ceiling surface in the electromagnetic shield room and filling the gap by soldering. When joining, there is an advantage that work efficiency can be improved step by step.

[Brief description of drawings]

FIG. 1 is a perspective view of a soldering jig according to the present invention.

FIG. 2A is a sectional view showing a work procedure for ceiling surface soldering using the same soldering jig. (B) is a graph showing the temperature distribution of the heat storage roller during the same work.

FIG. 3 is a cross-sectional view showing a conventional soldering work procedure.

[Explanation of symbols]

 10 soldering jig 12 grip handle 18 bracket 22 heater 26 cooling roller 28 heat storage roller 30 power supply cord 32 heat dissipation groove

Claims (1)

[Claims] 1. A pair of brackets arranged in a bifurcated shape at the tip of the handle, and a bearing rotatably supported by each bracket,
And a roller type soldering jig including a roller set according to the width of the soldering portion, a heater disposed inside at least one roller, and a power supply cord connected to the heater through the grip handle. A roller-type soldering jig characterized in that a plurality of heat dissipation grooves are provided on the surface of the roller in a circumferential direction orthogonal to the length direction thereof.