JP2002018571A - Soldering device for wire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve precision in soldered length to the tip part of wire. SOLUTION: A reciprocal unit 1 has wire holding parts 3a to 3e, engaging means 5a to 5e, wire guiding means 7a to 7e, a reciprocally guiding part 4 and a reciprocally driving means 6. Respective wire holding parts 3a to 3e holding the wire W are freely movable back and forth so guide to working units A to E by the reciprocally guiding part 4. The engaging means 5a to 5e are selectively engageable with the wire holding parts 3a to 3e corresponding to them. The engaging means 5a to 5e are driven in the backward and forward direction of the wire holding parts by the reciprocally driving means 6. The tip parts of the wires W corresponding to the wire guiding means 7a to 7e, are respectively guided by the wire guiding means 7a to 7e, and the guiding directions of the wires W are variably composed between a direction tilted in the front downward direction and a horizontal direction to a soldering unit E. By advancing with high precision the wire holding parts 3a to 3e by driving ball screws by the driving means 6, the wires W is fed to the soldering unit E in high precision as well.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire soldering apparatus for applying solder to an end of an electric wire, and more particularly, to an end of an electric wire which is inclined forward and downward by a predetermined angle with respect to an opposing solder unit. The present invention relates to an electric wire soldering apparatus that applies solder by sending out a portion.

[0002]

2. Description of the Related Art As a wire soldering apparatus as described above, there is conventionally known a structure in which an end of a wire is fed forward and downward by a pair of opposed feed rollers. That is, in the device, the solder is attached to the end of the electric wire fed by the feed roller by the solder unit.

[0003] More specifically, the end of the fed electric wire is immersed in a solder liquid in a solder tank provided in a solder unit, so that the solder is attached. In this case, the length of the solder attached to the end of the wire is determined by the length of the wire.

[0004]

In the conventional wire soldering apparatus as described above, since the feed of the end of the wire is performed by the feed roller, there is an error in the feed length due to the slip of the roller and the like. Easy to occur. For this reason, there is a problem that the accuracy of the length of the solder attached to the end of the wire is reduced.

The present invention has been made in view of the above points, and an object of the present invention is to provide a wire soldering apparatus which can improve the accuracy of the length of the solder to the end of the wire. Aim.

[0006]

According to a first aspect of the present invention, there is provided a solder unit for attaching solder to an end of a wire, and an advancing / retreating unit for advancing / retreating the wire with respect to the solder unit. The unit includes an electric wire holding portion for holding the electric wire, an advance / retreat driving means for driving the electric wire holding portion in an advancing / retreating direction with respect to the solder unit by a ball screw, and an end of the electric wire held by the electric wire holding portion. And a wire guiding means for guiding the solder unit in a direction inclined at a predetermined angle downward and forward with respect to the solder unit.

According to the first aspect of the present invention, when the wire holding portion is advanced with respect to the solder unit by driving the advancing / retreating drive means, the end of the wire held by the wire holding portion becomes an electric wire. It is sent out while being guided by the guide means in a direction inclined at a predetermined angle forward and downward with respect to the solder unit. Then, solder is attached to the end of the sent electric wire by the solder unit. In this case, the advance / retreat driving means can advance the electric wire holding portion with high precision by a ball screw drive (as compared with the case of using a feed roller or the like), so that the electric wire can be sent out to the solder unit with high accuracy.

[0008] In a second aspect based on the first aspect, the guide means sets the guide direction of the electric wire between a direction inclined at the predetermined angle and a direction corresponding to the advancing / retreating direction of the electric wire holding portion. It is variably configured.

According to the second aspect, in the first aspect, the solder is adhered by the solder unit in a state where the guide direction of the electric wire by the guide means is inclined at a predetermined angle, and the guide direction is maintained. In a state in which the direction corresponds to the direction in which the part advances and retracts, other processing such as cutting or stripping of an electric wire can be performed.

[0010]

Next, an embodiment of the present invention will be described with reference to the drawings. 1 to 5 are views showing an embodiment of a wire soldering apparatus according to the present invention. Hereinafter, the overall configuration of the present embodiment, the configuration of the advance / retreat unit, the operation or effect, and the modified example will be sequentially described.

[Overall Configuration] In FIGS. 1 and 2, a wire soldering apparatus according to the present embodiment includes a solder unit E for applying solder to an end of an electric wire (in this case, a covered wire) W, and a solder unit E. An advancing / retreating unit 1 for advancing / retreating the electric wire W with respect to the solder unit E. These solder unit E and advance / retreat unit 1 are both provided on a base Z.

On the base Z, other processing units such as a cutting unit A, a strip unit B, a core wire twisting unit C and a flux unit D are provided as shown in FIG. Among them, the cutting unit A cuts the fixed length of the wire W, the strip unit B cuts off the end of the wire W, the core twisting unit C twists the core of the wire W exposed by the stripping, and the flux unit D Is used to apply flux to the twisted core wire.

The processing units A to E may have known structures.
In this case, as the solder unit E, one having a solder tank e1 for storing the molten solder liquid is used.

Further, a moving means 2 is further provided on the base Z. The moving means 2 is for moving the advance / retreat unit 1 along each of the processing units A to E, and has a ball screw shaft 20, a servomotor 22, and a guide rail 24.

[Structure of the advance / retreat unit] As shown in FIGS. 1 and 2, the advance / retreat unit 1 has five wire holding portions 3a to 3e, engagement means 5a to 5e, and wire guide means 7a to 7e. 7e, an advance / retreat guide unit 4, and an advance / retreat drive unit 6.

Of these, five wire holding portions 3a to 3e
Are arranged in parallel with each other on a virtual horizontal plane (in a direction orthogonal to the moving direction of the moving means 2), and are configured to be able to hold the electric wires W, respectively. Further, the advance / retreat guide unit 4 connects the electric wire holding units 3a to 3e to the processing units A to
E are guided independently (in this case, in the horizontal direction) so as to be able to advance and retreat independently. Note that a nut portion 40 (FIG. 1) into which the ball screw shaft 20 is screwed is formed in the advance / retreat guide portion 4.

Next, the engaging means 5a to 5e are provided corresponding to the rear ends of the wire holding parts 3a to 3e, respectively.
It is configured to be selectively engageable with the corresponding wire holding portions 3a to 3e.

Specifically, a pair of opposing rollers 30, 30 are provided at the rear ends of the wire holding portions 3a to 3e, respectively. Each of the engagement means 5a to 5e has an engagement claw 50 which can be engaged between the opposed rollers 30, 30. Each of the engagement means 5a to 5e is provided with a corresponding one of the engagement claws 50 of the corresponding one of the rollers 30,
An ascending / descending cylinder 52 is provided as a claw portion advancing / retreating means for advancing / retreating (elevating / lowering) the 30 The five engaging means 5a to 5e (specifically, each cylinder 52) are integrally connected by a connecting member 55.

The forward / backward drive means 6 connects the five engaging means 5a to 5e connected to the connecting member 55 to the electric wire holding section 3.
This is for driving in the forward and backward directions of a to 3e. Specifically, the advance / retreat driving means 6 includes a ball screw shaft 60 extending in the advance / retreat direction, and a servo motor 62 for driving the ball screw shaft 60 to rotate. And the connecting member 5
In the center of the nut 5, a nut portion 6 screwed to the ball screw shaft 60 is provided.
4 are formed.

Next, the respective wire guide means 7a to 7e are provided corresponding to the front ends of the respective wire holding portions 3a to 3e, respectively, and the ends of the wires W held by the corresponding wire holding portions 3a to 3e. It is configured to guide the section. Each of the wire guides 7a to 7e sets the guide direction of the wire W to a predetermined angle (for example, about 6
(0 degree) It is variably configured between an inclined direction and a horizontal direction corresponding to the forward and backward directions of the wire holding portions 3a to 3e.

More specifically, each of the wire guide means 7a to 7e
Is a straight tubular guide member 70 for guiding the end of the electric wire W;
And a support member 72 for swingably supporting the guide member 70 (in the above-described variable direction). The latter support member 7
2 is fixed to the advance / retreat guide unit 4. Each of the electric wire guides 7 a to 7 e has a swing cylinder 74 for swinging the guide member 70 with respect to the support member 72.

[Operation or Effect] Next, the operation or effect of the present embodiment having the above-described configuration will be described by dividing into 1. the whole thing and 2. the case of performing the solder attachment processing. I do.

<1. Overall Operation or Effect> First, according to the present embodiment, the moving unit 2 moves the moving unit 2 along the plurality of processing units A to E to thereby move the moving unit 1. Wires W held in
Can be selectively processed by any of the processing units A to E. However, usually, the cutting unit A,
Processing is performed in the order of the strip unit B, the core wire twisting unit C, the flux unit D, and the solder unit E.

In this case, in the advancing / retreating unit 1, the corresponding engaging means 5a to 5e are engaged with an arbitrary one of the plurality of wire holding parts 3a to 3e. Is driven by the advance / retreat driving means 6, only the wire holding portions 3a to 3e can be advanced / retracted with respect to the processing units A to E. This allows
Any of the electric wires W held by the plurality of electric wire holding units 3a to 3e can be selectively advanced and retracted with respect to the processing units A to E, and the processing by the processing units A to E can be performed. Become.

The cutting unit A, the strip unit B, and the core wire twisting unit C excluding the solder unit E
When processing is performed by each processing unit of the flux unit D, the guide direction of the electric wire W by the electric wire guiding means 7a to 7e in the forward / backward unit 1 is changed to the electric wire holding portion 3a
The electric wire W is moved forward and backward in a state where the electric wire W is in a horizontal direction corresponding to the moving directions of ~ 3e.

In this case, the advance / retreat driving means 6 can advance the electric wire holding portions 3a to 3e with high accuracy by the ball screw drive (compared with the case of using a feed roller or the like). Can be delivered with high precision. Therefore, each processing unit A
In the processing of the end of the electric wire W by the steps E to E, the accuracy of the position and size in the length direction can be improved.

<2. When soldering is performed>
In particular, the case where the solder unit E performs the solder attaching process to the end (core wire) of the electric wire W will be described in detail.

In this case, in the forward / backward unit 1, the drive of the forward / backward drive unit 6 causes the (any) wire holding section 3 to be driven.
When the wires a to 3e are advanced with respect to the solder unit E (FIG. 5), the ends of the wires W held by the wire holding portions 3a to 3e correspond to the corresponding wire guide means 7a to 7e (the guide member 70). Thus, it is fed out while being guided forward and downward by a predetermined angle with respect to the solder unit E.

Then, the end (core wire) of the sent electric wire W is immersed in the solder liquid in the solder tank e1 of the solder unit E, so that the solder is attached. In this case, the adhesion length of the solder to the end (core wire) of the electric wire W is determined by the depth at which the end (core wire) of the electric wire W enters the solder liquid level e2 of the solder tank e1. The penetration depth of the end (core wire) of the electric wire W corresponds to the sending length of the electric wire W.

Therefore, according to the present embodiment, the advancing / retracting drive means 6 can advance the wire holding portions 3a to 3e with high accuracy (as compared with the case of using a feed roller or the like) by ball screw driving. The electric wire W can be sent out with high accuracy. For this reason, the accuracy of the length of the solder attached to the end (core wire) of the electric wire W can be improved.

Here, the specific operation in the case of performing the solder attachment processing will be described step by step.
(D).

(A) First, as shown in FIG. 3, an (any) wire holding portion 3a holding a wire W to be processed.
The corresponding engaging means 5a to 5e are engaged with .about.3e. Specifically, in the engagement means 5a to 5e,
The engaging claw 50 is raised by the lifting cylinder 52,
Opposing rollers 30, 30 of corresponding wire holding parts 3a to 3e
Is engaged between them.

(B) Next, as shown in FIG. 4, the guiding direction of the electric wire W by the corresponding electric wire guiding means 7a to 7e is inclined from the horizontal direction by a predetermined angle forward and downward with respect to the solder unit E. Move to Specifically, in the electric wire guide means 7a to 7e, the swing member 74 swings the guide member 70 forward and downward to the direction inclined by the predetermined angle.

(C) Next, as shown in FIG. 5, the wire holding portions 3a to 3e are advanced with respect to the solder unit E by driving the advance / retreat driving means 6, so that the solder is attached as described above. I do. Specifically, the ball screw shaft 60 is moved by the servo motor 62 in the forward / backward driving means 6.
Is rotated, the wire holding portions 3a to 3e are advanced from the connecting member 55 screwed with the wire via the engaging means 5a to 5e in the engaged state.

(D) Then, after the solder is attached, the wire W after processing is returned to the original position by performing the reverse operation.

[Modification] In the embodiment described above, the case where the advance / retreat unit 1 has the five wire holding portions 3a to 3e has been described.
One or six or more wire holding parts may be provided.
When only a single electric wire holding portion is provided, it is not possible to selectively process a plurality of electric wires W, but the effects on the position and dimensional accuracy in the length direction in the processing of the electric wires W are the same. However, in the latter case, it is not necessary to provide the opposing roller of the electric wire holding unit and the above-mentioned engaging means.

[0037]

According to the present invention, the advancing / retracting drive means can advance the holding portion with high accuracy by driving the ball screw, so that the wire can be sent out to the solder unit with high accuracy. For this reason, the accuracy of the length of the solder attached to the end of the electric wire can be improved.

[Brief description of the drawings]

FIG. 1 is a side view partially showing a longitudinal section of an embodiment of a wire soldering apparatus according to the present invention.

FIG. 2 is a plan view partially showing the wire soldering apparatus shown in FIG. 1 in a horizontal section.

FIG. 3 is an enlarged view showing an operation of an engaging means in the wire soldering apparatus shown in FIG. 1;

FIG. 4 is a diagram showing an operation of the wire soldering device in the wire soldering device shown in FIG.

FIG. 5 is a view showing a state of the wire soldering apparatus shown in FIG. 1 when solder is applied.

[Explanation of symbols]

 W electric wire 1 advance / retreat unit 2 moving means 3a, 3b, 3c, 3d, 3e electric wire holding part 30 facing roller 4 advance / retreat guide part 5a, 5b, 5c, 5d, 5e engaging means 50 engaging claw part 52 lifting cylinder (claw) 6 Advance / retreat means 6 Advance / retreat drive means 60 Ball screw shaft 62 Servo motor 64 Nut 7a, 7b, 7c, 7d, 7e Electric wire guide means 70 Guide member 72 Support member 74 Oscillating cylinder A Cutting unit B Strip unit C Core torsion unit D Flux unit E Solder unit e1 Solder tank e2 Solder liquid level

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (Reference) H01R 43/28 H01R 43/28

Claims (2)

[Claims] 1. A solder unit for attaching solder to an end of an electric wire, and an advance / retreat unit for advancing / retreating the electric wire with respect to the solder unit, wherein the advance / retreat unit is an electric wire holding unit for holding the electric wire. Forward / backward driving means for driving the wire holding unit in the forward / backward direction with respect to the solder unit by a ball screw; and moving the end of the wire held by the wire holding unit forward and downward with respect to the solder unit. An electric wire soldering device, comprising: electric wire guiding means for guiding in a direction inclined by a predetermined angle. 2. The guide means comprises: a guide direction of the electric wire;
2. The wire soldering device according to claim 1, wherein the wire soldering device is variably configured between a direction inclined by the predetermined angle and a direction corresponding to the direction of movement of the wire holding unit. 3.