JP3213238B2 - Soldering head for automatic machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soldering head for an automatic machine used by attaching to an automatic machine such as a soldering robot.

[0002]

2. Description of the Related Art Generally, an automatic machine such as a soldering robot for soldering an electronic component or the like supplies an iron member for soldering to the tip of a working arm and a thread-like solder to the iron tip of the iron member. And a solder supply nozzle for
In a state in which the iron member is pressed against the object, the solder is supplied by melting the thread-like solder supplied from the supply nozzle. What is important in this case is that the iron tip of the iron member is always pressed against the object with an appropriate force. For this reason, in the related art, the iron member can be moved back and forth, By urging the spring forward, the spring is slightly compressed after the iron tip comes into contact with the object, and the reaction force increases the pressing force.

However, in such a conventional automatic machine, the solder supply nozzle is fixedly attached to the work arm, and even when the iron member compresses the spring during soldering and retreats, the position of the supply nozzle is maintained. In other words, since the position of the supply nozzle relative to the iron tip changes relatively, when the iron member is retracted, the supply nozzle comes into strong contact with the object by that amount, causing misalignment, breakage, or poor soldering. And so on. For this reason, in general, the positional relationship between the iron tip and the supply nozzle is set within a safe range in consideration of the amount of compression of the spring, but when the soldering conditions change and the pressing force of the iron tip increases or decreases In addition, since the above setting must be changed each time, handling is troublesome and complicated. Also, if the distance between the iron tip and the target becomes smaller than normal due to the dimensional error of the soldering target, the operating stroke of the iron tip is set to the normal value. As the amount of compression of the spring by the supply nozzle increases, the supply nozzle strongly contacts the object,
Damage and displacement were inevitable.

[0004]

The main technical problem of the present invention is that a trowel member is pressed against an object with an arbitrary pressing force by arranging a trowel member and a supply nozzle so as to be able to move in synchronism with each other. Another object of the present invention is to provide a safe and easy-to-handle soldering head for an automatic machine in which a supply nozzle is not pressed against the object. Another technical problem of the present invention is to provide a soldering head for an automatic machine in which the relative positional relationship between the supply nozzle and the iron member can be easily set.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, according to the present invention, a soldering iron is mounted on a work arm of an automatic machine so as to be movable back and forth by a cylinder. Iron member, and a solder supply nozzle for supplying a thread-like solder to the iron tip of the iron member , the iron member is a base member via an iron mounting member
Be secured to, the base member is Rutotomoni mounted so freely back and forth movement between the rod front end position and rear end position of the cylinder, the rod by a first spring
The supply nozzle is urged toward a front end position to be locked by the upper stopper, and the supply nozzle is supported by a nozzle mounting member.
A nozzle mounting member penetrates the base member through the base member.
Rutotomoni mounted for back and forth becomes universal movement between a front end position and rear end position via an axis passing by the second spring,
A soldering head for an automatic machine is provided, wherein a stopper at a rear portion of the shaft is urged toward a front end position where the stopper is engaged with the base member, and a front end position of the nozzle mounting member is adjustable by adjusting means. Is done.

[0006]

In the soldering head of the present invention having the above configuration, the positional relationship between the iron member and the supply nozzle at the time of soldering is such that the iron tip and the nozzle tip are at substantially the same position, or It is preset by adjusting the front end position of the supply nozzle by the adjusting means so that the nozzle tip occupies a position slightly retreated from the front. At the time of soldering, the iron member and the supply nozzle advance together due to the extension of the rod of the cylinder, and the iron tip of the iron member is pressed against the object. At this time, the iron member retreats relatively to the rod by slightly compressing the first spring, and the pressing force of the iron tip is increased by a reaction force corresponding to the amount of compression.

On the other hand, even if the iron member is pressed against the object and retreats, the supply nozzle retreats together with the iron member, so that the positional relationship with the iron member does not always change.
Therefore, it is not pressed against the object. When the positional relationship between the tip of the supply nozzle and the iron tip is changed, the front end position of the supply nozzle may be adjusted in the front-rear direction by adjusting means. It can be freely changed between the position to supply directly and the position to supply toward the side of the iron tip of the iron member,
As a result, it is possible to cope with various soldering.
According to a specific configuration aspect of the present invention, the adjusting unit includes:
An adjusting screw inserted between the engaging portion on the working arm side and the engaging portion on the supply nozzle side, and a nut screwed on the adjusting screw, the adjusting screw is expanded and contracted by the nut to supply the nozzle. It is configured to define the position of the locking portion on the side.

[0009]

An embodiment of the present invention will be described below in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a working arm of a soldering robot, which is an automatic machine, and a part of the tip is shown. Reference numeral 2 denotes a soldering head attached to the work arm 1, and the soldering head 2
Has an iron member 4 for pressing the iron tip 4a against the object 6 to perform soldering, and a solder supply nozzle 5 for supplying thread-like solder 7 to the iron tip 4a of the iron member 4.

The iron member 4 and the supply nozzle 5 are attached to a rod 9 of a cylinder 8 fixed to the work arm 1 so as to be able to move back and forth in synchronism with each other by a mechanism described in detail below. . In this embodiment, the meanings of “front and rear” and “up and down” are substantially the same.

That is, a pair of front and rear stoppers 10 is provided at the distal end of the rod 9 extending downward from the cylinder 8.
a, 10b are formed, and these stoppers 10a, 10b are formed.
b, a base member 12 is mounted so as to be movable in the axial direction of the rod 9, and a first spring 13 contracted between the base member 12 and a rear stopper 10b causes a front stopper 10a
And is urged toward the front end position to be locked. Therefore,
The rear end position of the base member 12 is a position where the first spring 13 is compressed to the maximum.

The base member 12 has a trowel mounting member 14 attached thereto.
Are fixed by screws 14a, and the iron member 4 is mounted on the iron mounting member 14 with the iron tip 4a facing downward. A nozzle mounting member 15 is attached to the base member 12 so as to be movable back and forth between a pair of front and rear stoppers 17a and 17b by a shaft portion 16 penetrating the base member 12, and also serves as a front stopper 17a. The rear stopper 17b is urged toward the front end position where it comes into contact with the upper surface of the base member 12 by the second spring 18 contracted between the nozzle mounting member 15 and the base member 12. Therefore, the rear end position of the nozzle mounting member 15 is
This is the position where the second spring 18 is maximally compressed.

A support column 19 is provided on the nozzle mounting member 15 so as to penetrate the member vertically.
9 via a support fitting 20 at the lower end of the supply nozzle 5.
Are supported so that the inclination angle can be adjusted. The iron member 4 is disposed so as to penetrate the nozzle mounting member 15 in a loosely inserted state. The iron mounting member 14 and the nozzle mounting member 15 are connected to each other by a first slide portion 21 and a second slide portion 22 formed thereon so as to be relatively slidable in the front-rear direction.

An adjusting means 24 for adjusting and changing the front end position of the nozzle mounting member 15 (and thus the supply nozzle 5) is provided between the working arm 1 and the nozzle mounting member 15.
Is provided. The adjusting means 24 is provided with the work arm 1.
The adjusting screw 26 is loosely inserted between the engaging portion 1a provided on the nozzle and the engaging portion 25 provided on the nozzle mounting member 15 side, and a nut 27 is screwed onto the adjusting screw 26, as shown in FIG. As described above, by turning the nut 27 to shorten the adjusting screw 26 and locking the locking portion 25 of the nozzle mounting member 15 to the screw head 26a, the front end position of the nozzle mounting member 15 is set to that position. With this, the position of the supply nozzle 5 at the time of soldering can be raised.

In the soldering head 2 having the above structure,
When performing normal soldering, the adjusting screw 26 of the adjusting means 24 is sufficiently extended so that the engaging portion 25 is not engaged with the screw head 26a, and the supply nozzle at the time of soldering (see FIG. 2) is used. 5 is adjusted to the rear stopper 17b of the shaft portion 16.
Is adjusted so as to occupy the front end position in contact with the upper surface of the base member 12, so that the positional relationship between the supply nozzle 5 and the iron member 4 is substantially the same between the iron tip 4a and the nozzle tip 5a. Is set in advance as follows.

In the state where soldering has not been performed yet, as shown in FIG. 1, the rod 9 of the cylinder 8 is shortened, and the iron member 4 and the supply nozzle 5 are connected to the nozzle mounting member 15.
Is located at a position where the locking portion 25 on the side contacts the locking portion 1a on the working arm 1 side. At the time of soldering, as shown in FIG.
The rod 9 of the cylinder 8 extends, and the iron member 4 and the supply nozzle 5 advance together, and the iron tip 4a of the iron member 4 is pressed against the object 6 and the supply nozzle 5 forms a thread on the soldering portion. Solder 7 is supplied and soldering is performed.

At this time, when the iron tip 4 a is pressed against the object 6, the iron member 4 slightly compresses the first spring 13 (about 1 mm) and retreats relatively to the rod 9. Then, the pressing force of the iron tip 4a is increased by the amount of the reaction force corresponding to the compression amount. On the other hand, the supply nozzle 5
Even if the iron member 4 compresses the first spring 13 and retreats, the iron member 4 retreats in synchronization with the iron member 4, so that there is always a constant distance between the supply nozzle 5 and the iron member 4. The positional relationship will be maintained.

Therefore, the supply nozzle 5 is not pressed against the object 6, so that there is no inconvenience such as a displacement or breakage of the supply nozzle 5 and a poor soldering associated therewith. Moreover, even if the setting is changed so that the pressing force of the iron tip 4a is increased by increasing the amount of compression of the first spring 13, the positional relationship between the iron member 4 and the supply nozzle 5 does not change at all. Is not strongly pressed against the object 6, and therefore the iron tip 4a
Each time the pressing force is increased or decreased, there is no need to change the positional relationship between the supply nozzle 5 and the iron member 4 for the purpose of preventing the supply nozzle 5 from being displaced or damaged, and is easy to handle.

According to the soldering conditions, as shown in FIG. 3, the solder 7 is directly supplied from the supply nozzle 5 to the side surface of the iron tip 4a, melted, and then guided to the soldering site. Is performed, the adjusting screw 26 in the adjusting means 24 is shortened to lock the screw head 26a with the locking portion 25 on the nozzle mounting member 15 side, so that the front end position of the nozzle mounting member 15 is raised. Can be
As a result, the supply nozzle 5 has its tip 5a moved to the iron tip 4a.
The position can be adjusted so that the required amount becomes higher.
Thus, the relative positional relationship between the supply nozzle 5 and the iron member 4 can be easily set by the adjusting means 24.

The adjusting means 24 is not limited to the one shown in the figure.
7b may be adjustable in front and rear.
In this case, the locking portions 1a and 25, the adjusting screw 26 and the nut 27 can be omitted.

[0021]

As described above, according to the present invention, even when the iron member is pressed against the object with a desired pressing force, the supply nozzle is not pressed against the object, and the safe and easy-to-handle automatic machine is used. Soldering head can be obtained. Further, by adjusting the front end position of the supply nozzle by the adjusting means, the relative positional relationship between the supply nozzle and the iron member can be easily set, and it is possible to cope with various soldering.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a soldering head according to an embodiment of the present invention in a non-soldering state.

FIG. 2 is a side view showing a soldering state of the soldering head of FIG. 1;

FIG. 3 is a side view showing a soldering mode of the soldering head of FIG. 1 in a state where settings are changed.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Working arm 1a Locking part 2 Soldering head 4 Iron member 4a Iron tip 5 Supply nozzle 6 Object 7 Solder 8 Cylinder 9 Rod 12 Base member 13 First spring 14 Iron mounting member 15 Nozzle mounting member 18 Second spring 24 Adjustment Means 25 Locking part 26 Adjusting screw 27 Nut

Claims (2)

(57) [Claims] An iron member mounted on a work arm of an automatic machine so as to be able to move back and forth by a cylinder for soldering by pressing an iron tip against an object, and supplying a thread-like solder to the iron tip of the iron member. The iron member is fixed to a base member via an iron mounting member.
Have been, the base member is Rutotomoni mounted such longitudinal become universal movement between the rod front end position and rear end position of the cylinder, the first spring on the rod string
The supply nozzle is urged toward a front end position to be locked to the hopper, and the supply nozzle is supported by a nozzle mounting member,
The nozzle mounting member connects the base member to the base member.
Rutotomoni mounted for back and forth becomes universal movement between a front end position and rear end position by way of a shaft which penetrates, to the second spring
The stopper at the rear portion of the shaft is biased toward a front end position where the stopper is locked to the base member, and the front end position of the nozzle mounting member is adjustable by adjusting means. Soldering head for machine. 2. The adjusting means comprises an adjusting screw inserted between a locking portion on the working arm side and a locking portion on the supply nozzle side, and a nut screwed on the adjusting screw. according to claim 1, characterized in that by stretching the adjustment screw with a nut is configured to define the position of the locking portion of the supply nozzle side
Soldering head .