JP4528396B2 - Yarn solder grooving device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a yarn solder grooving device for continuously grooving flux-cored yarn solder.
[0002]
[Prior art]
When soldering using a flux-cored thread solder, the solder melted simultaneously with the flux is scattered as small particles and adheres to the periphery of the soldered portion. In particular, the higher the melting point, the greater the tendency. In recent years, lead-free solder is often used and has a high melting point. Thus, it is known that a thin groove reaching the flux in the thread solder is effective in preventing solder scattering. Further, if the flux is opened immediately before the soldering operation, the deterioration of the flux over time can be prevented. As a reference, a utility model publication number; 3-101363.
[0003]
[Problems to be solved by the invention]
As lead-less soldering increases due to environmental problems, there is a need for a small, inexpensive and versatile instrument for using grooved thread solder that does not cause solder scattering during work.
[0004]
[Means for Solving the Problems]
When grooving thread solder having various diameters and characteristics , the present invention has a dedicated shape according to various thread solders of a grooved rotary roller that contacts a rotary blade for grooving. The purpose of the apparatus is to have versatility for various types of thread solder by making the distance between the rotary roller with groove having a constant groove shape and the rotary blade tip variable.
[0005]
Further, in addition to the taper shape for grooving the grooving rotary roller at the center of the cross section of the thread solder, the guide is provided without providing a guide part independent of the grooving rotary roller from the thread solder reel on the extension of the taper. The purpose is to reduce the number of components by eliminating the guide mechanism by providing a tapered function.
[0006]
When automatic soldering is performed using a robot or the like, it is necessary to separate the molten portion at the end of the yarn solder supplied to the soldering portion and the unmelted portion. In that case, in order to pull back the thread solder in the direction opposite to the supply direction, the thread solder once grooved is provided by providing a knurled surface, a protrusion, a recessed shape, etc. on the surface of the tapered portion for centering the grooved roller. The purpose is not to slip on the taper surface.
[0007]
When grooving the center of the cross section of the thread solder, it is desirable that the groove shape of the cross section of the thread solder is cut radially into the center of the cross section, so that the position of the cutting edge of the rotary blade is accurately positioned And
[0008]
DETAILED DESCRIPTION OF THE INVENTION
In FIG. 1, 3 and 5 are cross sections of the thread solder, and represent differences in the diameter of the thread solder . 3 represents a large diameter, and 5 represents a small diameter. The rotary blade 1 is used to cut into the position of the thread solder 3 or 5 and each flux 4. Further, the distance between the cores 3 and 5 is X1, and X2 is the cutting depth to the center of the thread solder cross section. The wire solder sectional large, for the characteristics of the small or solder, by varying the distance X3, can adjust the depth of cut of X1, X2 for possible optimal grooving solder diameter and characteristics of the various. The centering taper 6 has a function of centering the thread solder cross section of the grooved rotary roller. The guide taper 9 has a function of guiding the thread solder to the centering taper 6. FIG. 2 shows that the distance X3 can be varied by attaching the shaft 7 having the eccentric amount of the distance X4 to the rotary roller 2 with the groove.
[0009]
By forming a guide taper 9 for guiding on the extension of the centering taper 6 in the rotary roller 2 with the groove, the thread solder 3 and (5) guided from the thread solder reel 10 is in the vertical and horizontal positions. 3 and 4 show that it can be easily supplied to the grooved rotary roller.
[0010]
FIG. 5 shows an embodiment in which a knurl 11 is processed on the tapered surface in a tapered portion for centering the grooved rotating roller 6.
[0011]
Wire solder 3 as shown in FIG. 6, (5) grooving shape of, in FIG. 6 (a) is desirable, in FIG. 6 (b), (c) is not allowed. In order to obtain the shape of (A), high machining accuracy is required for the component parts, resulting in high costs. Accordingly, the threaded portion 13 is provided on the rotary shaft constituting the rotary blade of FIG. 7 so that the position of the rotary blade can be adjusted, and the elastic spacer 15 is displaced by turning the nut 14 to thereby change the shape of FIG. Can be obtained.
[0012]
【The invention's effect】
In this way, a small, inexpensive and versatile thread solder grooving device with few components can be realized, and soldering work for environmental measures such as lead-free soldering can be easily performed at a low cost.
[Brief description of the drawings]
FIG. 1 is a side view of a rotary blade and a grooved rotary roller.
FIG. 2 is a cross-sectional view of a grooved rotary roller.
FIG. 3 is a plan view of a thread solder reel, a grooved rotary roller, and a rotary blade.
FIG. 4 is a side view of a thread solder reel and a grooved rotary roller.
FIG. 5 is a side view of a grooved rotary roller whose surface is processed on a centering taper portion .
FIG. 6 is a cross-sectional view of a non-defective product and (B) and (C) are defective products when thread solder and a rotary blade are cut.
FIG. 7 is a cross-sectional view of a thread solder, a rotary blade, and an elastic spacer.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rotating blade 2 Grooved rotating roller 3 Large diameter thread solder 4 Flux 5 Small diameter thread solder 6 Centering taper 7 Eccentric shaft 8 Eccentric shaft base 9 Guide taper 10 Thread solder reel 11 Tapered surface processing 12 Rotating shaft 13 Screw part 14 Nut 15 Elastic spacer

Claims (1)

And a grooved rotating rollers for centering the grooving position in the rotary blade and the wire solder sectional center contact the rotary blade and pair for the grooving on the wire solder before grooving supplied from wire solder reel Thread solder grooving device,
The groove of the rotating roller is formed by a centering taper extending from the bottom thereof and a guide taper extending continuously to the top of the groove, and the taper angle of the guide taper is larger than the taper angle of the centering taper. The guide taper has a function of a guide for introducing the thread solder into the groove,
The rotary shaft of the rotary blade has a threaded portion, and the blade is provided on the threaded portion so as to be sandwiched between the nut and the elastic spacer. By rotating the nut, the rotational shaft of the blade edge It is configured to adjust the position of the direction,
The support shaft of the rotating roller is an eccentric shaft for varying the cutting amount of the rotating blade into the center portion of the thread solder having various diameters and characteristics.
A thread solder grooving device.

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