JPH10114466A - Wire feeding method and device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve workability by smoothly moving a wire by the specified amount without any waste. SOLUTION: A wire feeding device is provided with a wire winding part for winding a wire (a), a wire transferring mechanism 4 for attachably and detachably pinching the outer peripheral surface of the wire delivered from the wire winding part and transferring the wire material forward in the axial direction, a wire guide part 5 arranged ahead of the wire material transferring mechanism and for guiding the front end of the wire to the specified part, and a wire holding part 6 for holding the wire guided to the specified part in the advancing position, and the wire transferring mechanism 4 is provided with a wire pinching part 7 for attachably and detachably pinching the wire in the retreating position E in the transferring direction of the wire material, a transferring and operating mechanism for transferring and operating the wire pinching part back and forth in the transferring direction of the wire, and a pinching releasing mechanism 9 for releasing pinching of the wire in the specified position in the advancing process. The wire delivered from the wire wrapping part is intermittently fed out from the front end of the wire guide part 5 in collaboration with the wire transferring mechanism 4 and the wire holding part 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wire feed method and a wire feeder for feeding a wire such as thread solder for brazing electronic parts and electrical equipment members.

[0002]

2. Description of the Related Art Conventionally, as a wire feeding device of this type, as shown in FIG. 7, a wire winding portion B and a wire feeding mechanism portion C are mounted on a device main body A, and a wire feeding portion C from the wire winding portion B is provided. The transfer rod 101 in the wire transfer mechanism C is used to transfer the wire a.
(FIG. 8), a configuration is known in which the nozzle member 103 is supplied to a predetermined location through an insertion hole of a flexible pipe 102.

[0003]

However, according to the above construction, after the wire a is sent out from the wire transport mechanism C, it passes through the flexible pipe 102 and the nozzle member 1 at the front end.
Since the feed distance is from 03, the transfer distance from the wire feed position X1 to the wire feed position X2 is relatively long, and if the transfer frictional resistance increases due to the bending of the pipe 102, the supply becomes impossible. Further, if the wire a is sagged on the way, even if the amount of wire supplied from the wire transport mechanism C is constant, the variation in the amount of wire supplied from the nozzle member 103 becomes large, and the wire solder May interfere with the brazing work. Further, when all the wires a are unreeled from the wire winding portion B and the final end of the wire a wound on the wire winding portion B passes through the wire transfer mechanism C, the wire a is removed. Since there is no transfer means, there is a problem that it remains in the pipe 102 and is discarded wastefully, which is extremely uneconomical.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and the transfer distance from a wire feed position to a supply position is shortened so that a predetermined amount of wire can be transferred smoothly without waste and good workability is achieved. It is an object of the present invention to provide a wire feed method and apparatus.

[0005]

According to a first aspect of the present invention, there is provided a wire feeding method comprising the steps of: feeding out a wire wound around a wire winding portion; and detachably attaching an outer peripheral surface of the fed wire at a retracted position. A wire rod clamping step, a wire rod transporting step of transporting the clamped wire rod forward in the axial direction, and a wire rod guiding step of guiding the front end of the transferred wire rod to the wire rod guiding unit,
A wire rod holding step of holding the wire rod guided by the wire rod guiding section at a forward position, and a pinch releasing step of releasing the pinching of the wire rod held at the forward position, wherein the wire rod from the wire winding section is formed of the wire rod. The present invention is characterized in that the guide portion is configured to be intermittently fed from the front end portion.

According to a second aspect of the present invention, there is provided a wire rod feeding device for winding a wire rod and an outer peripheral surface of the wire rod fed out of the wire rod winding section so as to be detachably sandwiched between the wire rod axis direction and the axial direction. A wire transport mechanism that transports the wire forward, a wire guide that is disposed in front of the wire transport mechanism and guides the front end of the wire to a predetermined location, and a wire that holds the wire guided to the predetermined location at a forward position A wire holding mechanism for holding the wire at a retreat position in a wire transferring direction, and a wire holding section for detachably holding the wire, and transferring the wire holding portion back and forth in the wire transferring direction. A transfer operation mechanism, comprising a pinch release mechanism for releasing the pinching of the wire at a predetermined position in the advancement process, the wire fed from the wire winding portion is cooperated with the wire transfer mechanism and the wire holding section. From the front end of the wire guide Characterized by being configured to deliver a manner.

According to a third aspect of the present invention, there is provided a wire rod feeding device, wherein the wire rod holding portion has an inner cylindrical member having a wire insertion hole formed in a central shaft portion and a split piece portion which can be radially expanded and contracted at a front end portion. An outer cylinder member slidably fitted to the inner cylinder member, the outer cylinder member abutting against a first stopper at a retracted position of the inner cylinder member to radially move the divided piece portion. While contracting and pinching the wire, the inner cylinder member is configured to abut on a second stopper during the advancing process to expand the split piece portion in the radial direction to release the pinching of the wire. Features.

It is recommended that the first stopper comprises a cylindrical guide member for guiding the inner cylindrical member. In addition, the above-mentioned pinching release mechanism includes:
As described in claim 5, it is recommended that the wire feeder body be provided with a second stopper that is movably mounted on the wire rod body and that can be variably adjusted. Furthermore, as described in claim 6, it is recommended to dispose a transfer roller which is in contact with and separates from the wire at the front end of the wire feeder body.

[0009]

According to the method and the apparatus according to the first and second aspects of the present invention, the wire is sandwiched and transported axially forward, and the wire guided to a predetermined position is held at the forward position, and the held wire is held. Is released, and the wire from the wire winding section is supplied to a predetermined location while being sent out.Because the transfer distance from the wire feed position to the wire supply position is relatively short and close, Smooth supply of wire can be achieved with low transfer frictional resistance.

Further, since the wire feed position is close to the wire feed position, there is no danger of the wire being sagged, so that a substantially constant wire feed amount is always ensured to eliminate variations in the wire feed amount, and Workability such as solder brazing can be improved. Further, when the final end of the wire fed from the wire winding portion passes through the wire feed position, the transfer of the wire is stopped and remains, but the wire feed position and the wire feed position are close to each other. For,
It is extremely economical to minimize the amount of waste wire that is wasted.

According to the third aspect of the present invention, the wire holding portion includes an inner cylindrical member and an outer cylindrical member, and the outer cylindrical member is brought into contact with the first and second stoppers, thereby making it extremely possible. With a simple structure, the wire can be firmly clamped, and stable transfer of the wire can be achieved. According to a fourth aspect of the present invention, since the first stopper is constituted by a cylindrical guide member for guiding the inner cylindrical member, the first stopper can be manufactured easily and easily. In that case, the cylindrical guide member Is formed integrally with the wire feeder body, the structure is simpler and the manufacture is easier.

According to a fifth aspect of the present invention, the pinch release mechanism is mounted on the wire feeder body so as to be axially movable, and the second stopper is configured to be variably adjustable, so that the wire feed amount can be reduced. Adjustment can further improve workability such as brazing with thread solder. Further, as set forth in claim 6, a transfer roller is provided at the front end of the wire feeder main body, and the outer cylinder member contacts the second stopper at the forward position of the wire transfer mechanism, thereby restraining the split piece. In the release state, the transfer roller can be pressed against the wire to continuously transfer the wire, and a versatile wire feeder can be provided in combination with the intermittent feed operation of the wire.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an external perspective view showing an example of a wire feeder according to the present invention, which feeds a wire made of thread solder. In the figure, a wire rod feeding device is a device main body A.
, A wire winding part B, and a wire feeder D. A wire winding part B having a wire winding reel 1 for winding a wire a made of, for example, thread solder is mounted on the apparatus main body A via a bearing member 2, and the wire winding reel is provided. The wire rod a from No. 1 is fed out by the wire rod feeder D and supplied to a predetermined position.

The wire feeder D is, as shown in FIG.
The wire feeder body 3 incorporates a wire transfer mechanism 4, a wire guide 5, and a wire holder 6. That is, the wire feeder main body 3 is made of, for example, a metal or synthetic resin tubular body having a frusto-conical front end 3a, and the wire transfer mechanism 4, the wire holding portion 7, and the wire holding portion 7. The transfer operation mechanism 8 and the holding release mechanism 9 are provided. The wire guide portion 5 is formed of, for example, a guide pipe fitted in a fitting hole 3b in the front end 3a of the wire feeder main body 3, and is configured to guide the front end of the wire a to a predetermined position. Have been. The wire holding portion 6 is provided with a fitting hole 3 at the rear end of the wire guide portion 5.
The wire a is made of, for example, an annular elastic body and is fitted to the wire b to hold the front end of the wire a at a predetermined position.

As shown clearly in FIG. 3, the wire rod holding portion 7 has an inner cylindrical member 11 having a scalable split piece 10 projecting from a front end thereof, and an outer cylindrical member 11 slidably mounted on the inner cylindrical member 11. An outer cylinder member 12 is fitted, and the inner cylinder member 11 is formed integrally with or separate from the operation shaft member 11c, and protrudes from the front end of the operation shaft member 11c. Divided piece part 1
Reference numeral 0 denotes a plurality of divided pieces 10a, 10b formed by a dividing line 11b extending in the axial direction (the direction of arrow b) from the front end of the inner cylindrical member 11 having the insertion hole 11a of the wire a, and these divided pieces 10a, 10b In the radial direction (direction of arrow c)
And a large diameter portion 10c is formed at the front end.

The outer cylindrical member 12 has a collar 12a at its front end.
And is fitted to the front end of the insertion hole 13a of the cylindrical guide member 13 fitted to the hollow shaft portion 3c of the wire feeder body 3 so as to be axially movable in the axial direction (the direction of the arrow b). In the retracted position E (FIG. 2), the collar 12
a comes into contact with a first stopper 14 which is a front end of the guide member 13, contracts the split piece portion 10 in the radial direction (the direction of the arrow c), clamps the wire a, and moves the wire rod a into the forward position F (FIG. In 4), the displaceable second stopper 1
5 so that the split piece 10 is enlarged in the radial direction to release the holding of the wire a.

An inner cylindrical member 11 is loosely fitted in the insertion hole 13a of the cylindrical guide member 13 so as to be axially movable in the axial direction (the direction of the arrow b), and a return spring member which constantly applies a spring force in a retreating direction. 16 is housed in a compressed state between the protrusion 11d of the operating shaft member 11c of the inner cylinder member 11 and the protrusion 13b of the cylindrical guide member 13, and the inner cylinder member is opposed to the spring force. An operating body 17 for urging the pressing force in the forward direction to 11 is fitted to the rear end of the operating shaft member 11c, and the return spring member 16 and the operating body 17 transfer the operating mechanism 8 of the wire pinching portion 7. Is configured. The pinch release mechanism 9
Is mounted on the outer peripheral surface on the front end side of the wire feeder main body 3 so as to be axially movable, and the second stopper 1 is mounted on the front end side.
5 and an operation body 18 on the rear end side.

Next, the operation of the above configuration will be described. First, the wire a from the wire winding portion B in FIG. 1 is inserted into the insertion hole 17a of the operating body 17 provided in the wire feeder D clearly shown in FIG. 2, the wire transfer mechanism 4, the wire holding portion 7, and the wire holding. After passing through the portion 6, the wire is guided out of the front end of the wire guide portion 5. In this lead-out state, the wire holding portion 7 retreats in the axial direction (direction of the arrow b) under the spring reaction force of the return spring member 16, and at the retreat position E, the outer cylindrical member 12 The guide member 13 contacts the first stopper 14 which is the front end of the guide member 13 and is externally fitted to the divided piece portion 10. As clearly shown in FIG. 3, the divided piece portion 10 is moved in the radial direction (the direction of arrow c). The wire a is firmly clamped by contraction.

In this holding state, when the operating body 17 is pressed to move forward in the axial direction, the wire holding section 7 composed of the outer cylinder member 12 and the split piece 10 moves forward, and its forward position F In FIG. 4, the outer cylinder member 1
2 comes into contact with the second stopper 15, and as shown clearly in FIG. After the release of the restraint, when the pressing of the operating body 17 is released, the large-diameter portion 10c of the split piece 10 is fitted to the front end of the outer tubular member 12 with the retreat of the wire transport mechanism 4. The wire rod a is integrally retracted.
Is held at a predetermined location by the wire holding portion 6,
The wire rod is held at the advance position F without retreating along with the wire rod transport mechanism 8 being retracted. It can be sent from the unit 5. Hereinafter, the same operation is repeated, and the wire winding portion B
Is intermittently fed from the front end of the wire guide 5.

According to the above structure, the wire a is pinched and transferred to the front in the axial direction, the wire a guided to a predetermined position is held at the advance position E, and the held wire is released from being pinched. The wire a is fed from the wire winding portion B to a predetermined location G while being sent out, and the wire feed position (retreat position) is provided.
Since the transfer distance from E to the wire supply position G is relatively short and close, the wire a has a low transfer frictional resistance.
Smooth supply can be achieved.

Further, since the wire feed position E is close to the wire feed position G, there is no danger of the wire a becoming slack or the like, and a substantially constant wire feed amount is always secured to reduce the variation in the wire feed amount. Therefore, workability such as brazing with thread solder can be improved. Further, the wire winding portion B
The final end of the wire a fed out from the wire rod feed position E
, The transfer of the wire a is stopped and remains, but since the wire feed position E and the wire supply position G are close to each other, the amount of the wire a that is wasted and discarded is minimized. Extremely economic.

According to the structure of the wire holding portion 7, the inner tube member 11 and the outer tube member 12 are provided.
Is brought into contact with the first and second stoppers 14 and 15, the wire a can be firmly held with a very simple structure, and the wire a can be stably transported.

Further, the first stopper 14 can be easily and easily manufactured by being composed of the cylindrical guide member 13 for guiding the inner cylindrical member 11, in which case the cylindrical guide 11 If the member 13 is formed integrally with the wire feeder body 3, the structure is simpler and the manufacture is easier. Further, the pinch release mechanism 9 is mounted on the wire feeder body 3 so as to be axially movable, and the second stopper 15 is configured to be variably adjustable. Workability such as attachment can be further improved.

FIG. 6 is an external perspective view showing another example of the wire feeder according to the present invention. In the figure, a transfer roller 20 is disposed at the front end of the wire feeder D,
The wire a sent out from the front end of the wire feeder D is configured to be continuously transferred by the transfer roller 20. That is, in the above configuration, the operating tool 17
Is pushed forward to move in the axial direction, as described with reference to FIG. 4, the wire pinching portion 7 including the outer cylinder member 12 and the split piece portion 10 built in the wire feeder D advances, and At the forward position F, the outer cylinder member 12 comes into contact with the second stopper 15, and the restriction on the wire a by the split piece 10 is released as shown in FIG.

In this released state, the transfer roller 20 is moved inward in the radial direction (the direction of arrow c) and pressed against the wire a, and when this is rotated, the wire a is moved by the transfer roller 20. Thus, the wire a can be continuously transferred at a high speed, which can contribute to a large supply of the wire a. When the transfer roller 20 is moved outward in the radial direction of the wire a to release the pressure contact with the wire a (not shown), the wire a is supplied by the wire feeder D as described above. Intermittent feeding can be achieved, and a versatile wire feeder can be provided.

In the above embodiment, the wire winding portion B
May be attached to the apparatus main body A, but the apparatus main body A may be removed and arranged in a separate room to guide the wire a to the wire feeder D from a distant place. It goes without saying that various modifications can be made.

[0027]

According to the method and the device according to the first and second aspects of the present invention, the wire is sandwiched and transported axially forward, and the wire guided to a predetermined position is held at the forward position, and the wire is held. Release the pinching of the wire rod, and supply the wire rod from the wire winding section to a predetermined location while sending out the wire rod,
Because the transfer distance from the wire feed position to the wire supply position is relatively short and close, it is possible to achieve a smooth supply of the wire with low transfer frictional resistance,
There is no danger of slack in the wire, and a substantially constant wire feed rate is always ensured, eliminating variations in the wire feed rate, improving workability such as brazing by thread soldering, and wasting waste. It is extremely economical to minimize the amount of wire rod generated.

According to the third and fourth aspects of the present invention,
The wire rod holding portion includes an inner cylinder member and an outer cylinder member, and the outer cylinder member is brought into contact with the first and second stoppers to firmly clamp the wire rod with a very simple structure. And the first stopper can be easily and easily manufactured by being composed of a cylindrical guide member for guiding the inner cylindrical member. If the guide member is formed integrally with the wire feeder body, the structure is simpler and the manufacture is easier.

According to the fifth aspect of the present invention, the wire holding portion includes an inner tube member and an outer tube member, and the holding release mechanism is mounted on the wire feeder body so as to be axially movable, and the second stopper is provided. Since it is configured to be variably adjustable, the workability such as brazing by thread solder can be further improved by adjusting the supply amount of the wire material. Further, according to the invention as set forth in claim 6, if the transfer roller disposed at the front end of the wire feeder main body is pressed against the wire and continuously transferred, the intermittent feeding operation of the wire is performed. A versatile wire rod feeding device can be provided.

[Brief description of the drawings]

FIG. 1 is a schematic external perspective view showing an example of a wire feeder according to the present invention.

FIG. 2 is a longitudinal sectional view of the wire rod feeding device.

FIG. 3 is a perspective view of a main part of the wire rod feeding device.

FIG. 4 is a longitudinal sectional view for explaining the operation of the wire rod feeding device.

FIG. 5 is a perspective view of a main part explaining the operation of the feeder.

FIG. 6 is a schematic external perspective view showing another example of the wire rod feeding device according to the present invention.

FIG. 7 is a schematic side view showing an example of a conventional wire rod feeding device.

FIG. 8 is a perspective view of a main part of a conventional wire feeding device.

[Explanation of symbols]

 Reference Signs List A device main body B wire winding part D wire feeder E retreat position F advance position a wire b axial direction c radial direction 3 wire feeder body 4 wire transfer mechanism 5 wire guide 6 wire holding 7 wire holding 8 transfer operation Mechanism 9 Nipping release mechanism 10 Split piece 11 Inner cylinder member 11a Insertion hole 12 Outer cylinder member 13 Cylindrical guide member 14 First stopper 15 Second stopper 20 Transfer roller

Claims (6)

[Claims] 1. A step of paying out a wire wound around a wire winding section, a step of holding a wire rod removably at an outer peripheral surface of the fed wire rod at a retracted position, and a step of axially moving the held wire rod in an axial direction. A wire rod transferring step of transferring the wire rod to the wire rod guiding section, and a wire rod guiding step of guiding the front end of the transferred wire rod to the wire rod guiding section.
A wire rod holding step of holding the wire rod guided by the wire rod guiding section at a forward position, and a pinch releasing step of releasing pinching of the wire rod held at the forward position, wherein the wire rod from the wire winding section is A wire feeding method, wherein the wire is fed intermittently from the front end of a wire guide. 2. A wire winding portion for winding a wire, a wire transport mechanism for detachably holding an outer peripheral surface of the wire fed from the wire winding portion and transporting the wire forward in the axial direction, A wire rod guide disposed in front of the wire rod transport mechanism for guiding a front end of the wire to a predetermined location; and a wire rod holding section for holding the wire guided to the predetermined location at a forward position. The transfer mechanism includes a wire holding portion that detachably holds the wire at a retracted position in the wire transfer direction, a transfer operation mechanism that transfers the wire holding portion back and forth in the wire transfer direction, and a holding device for holding the wire. And a pinch releasing mechanism for releasing the wire at a predetermined position in the forward movement process, wherein the wire fed from the wire winding portion is intermittently moved from the front end of the wire guide by the cooperation of the wire transfer mechanism and the wire holder. Specially configured to send The wire feeder to be used. 3. An inner cylindrical member having a wire insertion hole formed in a center shaft portion and having a split piece which can be radially expanded and contracted at a front end portion, and a slidable member mounted on the inner cylindrical member. An outer cylinder member externally fitted to the outer cylinder member, wherein the outer cylinder member abuts on a first stopper at a retracted position of the inner cylinder member to shrink the split piece portion in the radial direction to pinch the wire rod and 3. The device according to claim 2, wherein the inner cylindrical member is configured to abut on a second stopper in a process of advancing the inner cylindrical member so as to expand the divided piece portion in the radial direction to release the holding of the wire. Wire feeder. 4. The apparatus according to claim 2, wherein the first stopper comprises a cylindrical guide member for guiding the inner cylindrical member.
Or the wire feeder according to 3. 5. The pinch release mechanism according to claim 2, further comprising a second stopper movably mounted on the wire feeder main body so as to be axially movable. Wire feeder. 6. A transfer roller is provided at the front end of the wire feeder main body so as to be in contact with and detachable from the wire, and the outer cylindrical member at the forward position of the wire transfer mechanism abuts on a second stopper. The wire feeder according to any one of claims 2 to 5, wherein the transport roller is pressed against the wire to continuously transport the wire in the release state of the constraint of the split piece. .