JP4743728B2 - Ring-shaped member forming machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a ring-shaped member forming machine, and more particularly to a ring-shaped member forming machine suitable for winding wire solder into a coil shape and cutting it to form ring solder.
[0002]
[Prior art]
As a ring-shaped member forming machine, for example, a ring solder forming machine, wire solder (thread solder) is wound around a winding core (core member) provided with a holding member with a blade, and this is gradually turned along with the rotation of the winding core. Has been applied for a structure in which the winding core is pulled back backwards and pressed against the bracket to form ring solder by just one rotation (Japanese Patent Laid-Open No. 10-166182).
The ring solder 21 formed by this ring solder forming machine has a spiral shape like a spring washer as shown in FIG. 4, and the cut ends 21a and 21b are different. For this reason, there is no problem when it is used directly after forming, but when it is stored in a large number of bags or when it is inserted into the lead of a part using a ring solder insertion machine, Entangled in the bag or caught when handled with an insertion machine.
Therefore, in an actual device, an optional mechanism is added in which the formed ring solder is passed between two rollers and the spiral ring solder is pressed into a flat donut shape (this is also a patent application). Filed as Hei 11-129328).
[0003]
In normal use, even the above press work is sufficient as a product, but depending on the orientation when the ring solder is inserted into the press part by the roller, there may be a slight gap between the cut edges of the ring solder. The gap slightly affects the outer dimensions of the ring solder, which may be an obstacle when used with an automatic insertion machine.
Therefore, in the above-mentioned Japanese Patent Application No. 11-129328, a device for further reshaping is provided, the ring solder is flattened in a donut shape, and the outer edge is pressed by a shaping disk so as to be closer to a perfect circle.
[0004]
[Problems to be solved by the invention]
However, at the time of producing the ring solder, if such a flat donut-shaped ring solder can be formed instead of a spiral, it will not be caught even if an automatic insertion machine is used, and the above-mentioned reshaping apparatus will not be caught. This is no longer necessary and can greatly contribute to the cost of the automatic insertion machine.
Further, the ring solder forming machine disclosed in Japanese Patent Laid-Open No. 10-166182 has a feature that only one ring can be formed due to the structure in which the solder is cut while being wound around a core with a blade. Normally, a ring with one round often performs a sufficient function, but in rare cases, the amount of solder is insufficient and a ring with one or more rounds may be required.
In such a case, the ring solder forming machine disclosed in JP-A-10-166182 can form only one round of ring solder. When the amount of solder is insufficient, two or more ring solders are inserted. There was no other way but to use it.
[0005]
[Means for achieving the object]
The object of the present invention is to solve the above-mentioned problems, and can form a ring solder or the like that is flat and close to a perfect circle and does not cause any trouble even if an automatic insertion machine is used. The object is to realize a ring-shaped member forming machine capable of forming solder or the like.
[0006]
In the present invention for the above purposes achieving a core for winding a wire into a coil shape, is rotatably supported on the support member, said core to wound coiled wire is pushed into the hole The shaping guide piece that rotates about the core together with the coiled wire and corrects the coiled wire to a desired outer diameter, and when winding the wire, is synchronized with the rotation of the core. A stopper plate that pushes the coiled wire wound around the winding core toward the exit of the shaping guide piece when the wire is wound by the required number of turns, and in a plane substantially perpendicular to the winding core in advanced retracted, the shaped guide piece of the extruded coiled wire from the outlet is cut at a plane perpendicular to the winding core, and a cutter that cuts to a flat ring-shaped member.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
The details of the present invention will be described below based on the embodiments shown in the drawings. FIG. 1 shows a front view of a main part of a ring solder forming machine according to the embodiment, and FIG. 2 shows a cross section of the ring solder forming machine according to the embodiment, partly cut along line AA in FIG.
In the figure, reference numeral 1 denotes a winding core. Here, two ordinary shafts (round bars) having a diameter matching the inner diameter of the ring solder 2a (FIG. 3) to be formed are arranged. These wire cores 1 are wound with wire solder 2 into a coil shape (2b), which is cut into a ring shape, but if a normal shaft (round bar) slips, a flat knurled Processing may be applied, or a square shaft may be used.
[0008]
The core 1 only rotates, and does not move back and forth while rotating, like the core disclosed in Japanese Patent Laid-Open No. 10-166182. Instead, here, the stopper plate 3 is gradually retracted backward (arrow B in FIG. 2) in synchronization with the rotation of the winding core 1, and vigorously advanced after one round, returning to the previous fixed position. It moves (therefore, the stopper plate 3 is slidable with respect to the core 1).
Reference numeral 4 denotes a shaping guide plate which corresponds to the support member described in the claims. 5 is a shaping guide piece, which is formed with a conical hole 7 whose entrance 7a is slightly larger than the outer shape of the wire solder 2b wound in a coil shape. Is matched to the desired outer dimensions of the ring solder.
[0009]
A bearing 8 is interposed between the shaping guide plate 4 and the shaping guide piece 5. Therefore, the shaping guide piece 5 freely rotates with respect to the shaping guide plate 4.
Reference numeral 9 denotes a cutter, which is arranged so as to be in close contact with the surface of the shaping guide plate 4 and advances as indicated by an arrow C to cut the wire solder 2b wound in a coil shape, and then returns to the original position. fall back.
A feed roller 10 sandwiches the wire solder 2 and supplies them to each core 1. A bearing fixing plate 11 fixes the outer periphery of the bearing 8 to the shaping guide plate 4.
[0010]
More specifically, the wire solder 2 is wound around the core 1 several times, and the tip of the wire solder 2 is put out from the outlet 7 b of the hole 7 of the shaping guide piece 5. When a start switch (not shown) is pressed, the core 1 starts to rotate, and at the same time, the stopper plate 3 descends in synchronization with the rotation of the core 1 (in the direction of arrow B). As a result, the wire solder 2 is wound around the open gap without resistance.
When the wire solder 2 for one round is wound, the stopper plate 3 moves forward toward the original position and pushes the wound wire solder 2.
[0011]
The extruded wire solder 2 enters the entrance 7 a of the hole 7 of the shaping guide piece 5 along the core 1. After that, the wire solder 2b wound in a coil shape advances through the hole 7 of the shaping guide piece 5 and is corrected to the outer dimensional diameter in the vicinity of the outlet 7b, and eventually goes round from the outlet 7b. Come out in minutes.
At this time, the shaping guide piece 5 rotates in the same manner as the coiled wire solder 2b rotates. Here, the inner diameter of the exit vicinity 7b of the hole 7 of the shaping guide piece 5 is adjusted to the ideal outer dimension of the ring solder. For this reason, when the coiled wire solder 2b moves in the hole 7 of the shaping guide piece 5, considerable resistance is involved.
[0012]
At this time, if the shaping guide piece 5 is fixed to the shaping guide plate 4, this resistance acts in the opposite direction to the rotation of the coiled wire solder 2b, so that the winding of the coiled wire solder 2b is loosened, In some cases, the core 1 may be idle.
Therefore, as described above, the bearing 8 is interposed between the shaping guide plate 4 and the shaping guide piece 5 is freely rotated. Thereby, there is no resistance in the rotating direction of the coiled wire solder 2b, and the loosening is prevented.
[0013]
The coiled wire solder 2 b that has come out from the outlet 7 b of the hole 7 of the shaping guide piece 5 is cut by the cutter 9. The cutter 9 starts to move when the stopper plate 3 finishes feeding the coiled wire solder 2b for one round, advances along the wall surface of the shaping guide plate 4 in a direction substantially perpendicular to the core 1, and the coiled wire solder 2b. The blade 9a of the cutter 9 is applied to the outer edge of the. At this time, the coiled wire solder 2b is rotating. Therefore, the blade 9a cuts along the outer edge of the coiled wire solder 2b, and the coiled wire solder 2b can be cut cleanly without producing burrs, just as when cutting with a scissors. As a result, as shown in FIG. 3, the ring solder 2a having a flat outer shape close to a perfect circle is formed. When this operation is finished, the cutter 9 moves back to its original position.
[0014]
Although illustration of the drive mechanism of each part is omitted, for example, the movement of the stopper plate 3 can be realized by a general cam mechanism that moves in synchronization with the rotation of the core 1. The movement of the cutter 9 can be realized by a cam and a crank mechanism that move in synchronization with the rotation of the core 1.
In the embodiment, the case where the wire solder is formed in a ring shape is taken as an example. The wire material to which the device of the present invention can be applied is not limited to this, and can be applied to various wire materials such as gold wire, aluminum wire, and silver wire.
[0015]
【The invention's effect】
As described above, in the present invention, a wire is wound around a winding core in a coil shape, a shaping guide piece is rotatably supported on a support member, and this is externally fitted to the wound coiled wire. A cutter that shapes the coiled wire rod with a stopper plate, extrudes the coiled wire rod toward the exit of the shaping guide piece, and advances and retracts the extruded coiled wire rod in a direction substantially perpendicular to the winding core. It was made to cut with. Thereby, various effects described below are exhibited.
[0016]
First, it is possible to obtain a ring solder or the like in which the cut ends are not different from those of the conventional ring solder, the surface is flat, the outer shape is close to a perfect circle, and even when an automatic insertion machine is used, no trouble occurs.
[0017]
Second, the conventional ring solder forming machine can form only one round of ring solder. However, according to the ring-shaped member forming machine of the present invention, ring solder other than one round can be formed by changing the operation timing of the stopper plate and the cutter.
That is, for example, if the stopper plate is returned to a fixed position every half circumference and the wire wound in a coil shape is sent out, 0.5 rounds of ring solder or the like can be formed. The stopper plate feeds the wire material every one turn, but if the cutter is operated every two turns, it is possible to form two rounds of ring solder or the like. Further, ring solder having an arbitrary number of turns can be formed as necessary, such as forming three or four ring solders.
In this case, the operation of each part is controlled by electronic control such as a CPU by inserting an electromagnetic clutch between the rotational drive source of the winding core and the stopper plate cam or between the cutter crank. Each timing can be varied, and furthermore, each drive motor can be arranged independently, synchronized with a rotary encoder or the like, and also operated by varying the timing by electronic control.
[0018]
Thirdly, it is possible to relatively easily make a ring-shaped member forming machine having a multi-axis configuration including the two-axis of the embodiment. That is, when used in an automatic insertion machine, a considerable number of ring solders or the like are required. For this reason, for example, even an automatic insertion machine of Japanese Patent Application No. 11-129328 is designed on the assumption that a plurality of ring solder forming machines such as Japanese Patent Application Laid-Open No. 10-166182 are used.
In this case, even the ring solder forming machine disclosed in Japanese Patent Laid-Open No. 10-166182 can be multiaxial. However, in the case of a structure like this ring solder forming machine, even if the body etc. can be shared and only one piece is required, many parts such as cutters and drive cams must be provided independently by the number of shafts. In comparison with simply preparing the required number of single-axis ring solder forming machines, the advantage of multi-axis is not so much.
On the other hand, in the ring-shaped member forming machine according to the present invention, a considerable number of parts such as a stopper plate, a shaping guide plate, and a cutter can be made common to each core. In addition, the advantage of having a multi-axis configuration, such as the ability to share each drive source, is not only that it does not take up space, but also has a large cost.
[0019]
Fourthly, when the multi-axis configuration is also used, ring solders having different sizes can be simultaneously manufactured for each axis. In other words, basically one round of ring solder or the like is one round even if there is a difference in size.
Therefore, it is possible to simultaneously produce ring solders of different sizes by matching the respective cores, shaping guide pieces, feed rollers, etc. to the respective sizes. In such a case, it is possible to use only a portion of a desired size in that case, and in that case, a new size ring solder or the like can be produced without having to replace the core and the shaping guide piece one by one. There are also benefits.
[0020]
As described above, the ring-shaped member forming machine of the present invention is capable of forming a ring solder having a flat and nearly perfect outer shape, and does not get caught even if an automatic insertion machine or the like is used. The present invention can also be used for the production of ring solder, etc., can be easily multi-axial, and can produce various sizes of ring solder.
[Brief description of the drawings]
FIG. 1 is a front view showing a ring solder forming machine according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a ring solder forming machine according to an embodiment in which a part is cut along a line AA in FIG. 1 (only the shaping guide plate 4, the shaping guide piece 5, the bearing 8, and the bearing fixing plate 11 are cut).
FIG. 3 is a front view showing an example of ring solder produced by the ring solder forming machine according to the embodiment.
FIG. 4 is a front view showing an example of a conventional spring washer-shaped ring solder.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Core 2 ... Wire solder 2a ... Ring solder 2b ... Coiled wire solder 3 ... Stopper plate 4 ... Shaping guide plate 5 ... Shaping guide piece 7 ... Hole 7a ... Hole inlet 7b ... Hole outlet 8 ... Bearing 9 ... Cutter 9a ... Cutter blade 10 ... Feed roller 11 ... Bearing fixing plate 21 ... Conventional ring solder 21a, 21b ... Conventional ring solder cut end

Claims (1)

A core for winding a wire in a coil shape;
A coiled wire rod that is rotatably supported by the bearing member and is wound around the winding core is inserted into the hole, so that the coiled wire rod rotates with the coil core and the coiled wire rod. An orthopedic guide piece to correct the desired outer diameter ,
When the wire is wound, the wire is retracted in synchronization with the rotation of the core, and when the wire is wound a required number of turns, the coiled wire wound around the core is directed toward the exit of the shaping guide piece. A stopper plate to be extruded,
The coiled wire rod that is advanced and retracted in a plane substantially perpendicular to the winding core and is extruded from the outlet of the shaping guide piece is cut by a plane perpendicular to the winding core, and the cut end is a flat ring-shaped member. A ring-shaped member forming machine comprising a cutter.

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