JPS5919573Y2 - Solder wire winding bobbin - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an improvement of a bobbin for winding solder wire.

Conventionally, when brazing pipes and joints in piping work for water supply, hot water supply, air conditioning, etc., workers generally pull out the solder wire wound around the bobbin from the bobbin while performing the brazing work using a torch, etc. .

By the way, the length of the solder wire used for brazing depends on the type of pipe to be brazed (outer diameter of the pipe).
There are appropriate values depending on the situation.

For example, if the length of the solder wire to be melted is short, there will be insufficient solder and the strength of the brazed part will be insufficient.
There is a problem that the gap between the pipe and the joint is not completely filled and shallow water occurs, which can lead to a major accident.On the other hand, if the length of the solder wire is too long, there is a problem that the solder wire is wasted.

However, in the past, operators only determined the length of the solder wire based on experience and visual inspection, which sometimes caused the problems described above when determining the column diameter.

Therefore, this brazing generally required considerable skill.

This idea was made with the above points in mind.
To provide a bobbin for winding solder wire that allows even an unskilled person to set the length of the solder wire to an appropriate value.

As a means for achieving this purpose, for example, as shown in FIGS. 1a and 1b, a scale 3 is drawn on one side of the collars 2, 2 provided at both ends of the bobbin body 1,
One possible method is to use this scale 3 to determine the length of the solder wire 4.

However, with this method, it is difficult to measure the length of the solder wire because the measurement starting point is visually observed, and the solder wire is placed around the outer periphery of the narrow collar. There is a problem in that the measurement work takes time because the step of attaching the markings to represent the measurement is separate, and that only one measurement port can be obtained in one measurement.

Therefore, in this invention, these problems were taken into consideration to achieve the above object.

An embodiment of this invention will be described below with reference to FIG. 2a.

This will be explained with reference to FIGS. b and 3.

In the figure, 6 is a bobbin main body, and a solder wire 7 is wound around the outer periphery of the bobbin main body.

Flams 8.9 are provided at both ends of the bobbin body 6, respectively.

A scale member 10 is attached to the side of one of the collars 8 9 by fitting its cylindrical portion 11 into the through hole 12 of the bobbin body 6 .

Therefore, this scale member 10 can be easily removed if necessary.

The scale member 10 has three regular hexagons 13 of different sizes.
．． 14, 15 and a regular square 16 are integrally formed in a concentrically stacked shape.

Grooves 17 for fitting the solder wire 7 are formed along the circumferential direction on the outer periphery of each regular polygon 13, 14, 15° 16, and grooves 17 are formed along the circumferential direction at the apex portions of the outer periphery. The bottom cylindrical bodies 18... are each fixedly attached.

The inner diameter of the bottomed cylindrical body 18 is made slightly larger than the diameter of the solder wire 7, so that the solder wire 7 can be fitted inside the cylinder.

The lengths 11 to 14 of each side of each regular polygon 13, 14, 15, and 16 are, for example, solder wires used when connecting 1-inch pipes by brazing. 7 is made equal to the appropriate length.

The appropriate length of the solder wire 7 in this case is a value determined by calculation and experiment.

Next, a case will be described in which brazing is performed using the solder wire winding bobbin having the above structure.

For example, when brazing and connecting inch-sized pipes, the solder wire 7 is unwound by a predetermined amount in advance, and then the tip of the unwound solder wire 7 is connected to the inch scale member. By inserting the solder wire into the bottomed cylindrical body 18 of the regular hexagonal body 14 and rotating it once along the groove 17 on the outer periphery of the regular hexagonal body 14, the solder wire of the appropriate length for the connection can be soldered. You can mark five 7's at once.

In addition, in the above embodiment, the cylindrical portion 11 of the scale member 10 is provided so that it is fitted into the through hole 12 of the bobbin body 6, so compared to the case where the scale member 10 and the bobbin body 6 are integrated. It has the advantage that it can be easily applied to conventional bobbins.

Further, in the above embodiment, the scale member 10 is attached to the pre-provided collar 8, but the configuration is not limited to this, and for example, the collar 8 can be eliminated and the scale member 10 can be used not only as a scale but also as a collar. It's okay.

As explained above, according to the bobbin for winding solder wire according to this invention, a plurality of regular polygons of different sizes and having grooves on the outer periphery are arranged concentrically on the side of at least one brim of the bobbin. Since a stacked scale member is provided, the length of the solder wire can be maintained at an appropriate value depending on the type of object to be brazed by using this scale member. It is possible to determine the optimal length of solder wire according to the situation, and since it is possible to determine the length of multiple solder wires in one measurement operation, the time required for measurement can be relatively shortened, resulting in economical Moreover, it has the effect of being able to perform reliable brazing.

[Brief explanation of drawings]

Fig. 1a is a partially cutaway front view shown to explain this invention, Fig. 1 is a side view of Fig. 1a, and Fig. 2a is a partially cutaway front view showing an embodiment of this invention. , Figure 2 is the second
The side view of Fig. a and Fig. 3 are diagrams shown for explaining the operation. 8.9...Brim, 7...Solder wire, 6...
- Bobbin body, 10... Scale member, 13.14.
15... Regular hexagon, 16... Regular square, 17...
groove.

Claims (1)

[Scope of utility model registration request] In a bobbin for winding solder wire, which is made up of a bobbin body around which solder wire used for brazing is wound, and ribs provided at both ends of the bobbin body, a solder wire is attached to the side of at least one of the ribs. A scale member is provided to determine the length of the solder wire required for attachment, and the scale member has a plurality of regular polygons of different sizes stacked concentrically, and the plurality of regular polygons are Each of the solder wires has a groove along the circumferential direction on the outer periphery, and the length of each side is equal to the length of the solder wire determined by the type of the object to be brazed. A bobbin for winding solder wire.