JPH09327767A - Soldering head for automatic machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soldering head for an automatic machine in which a feeding nozzle is not pressed to a work even when a soldering iron is pressed to the work with the desired pressing force, and which is safe and easy for handling. SOLUTION: A base member 12 is fitted to a rod 9 of a cylinder 8 fixed to a working arm 1 of an automatic machine in a longitudinally movable manner to energize the base member forward by a first spring 13, a soldering iron 4 is fixed to the base member 12 through a soldering iron fitting member 14, a solder feeding nozzle 5 is fitted through a nozzle fitting member 15, the nozzle fitting member 15 is movable in the longitudinal direction, and energized forward by a second spring 18, and the solder feeding nozzle 5 is synchronously displaceable with the soldering iron 4 to prevent a nozzle tip part 5a from being pressed to a work 6 during the soldering operation.

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 which is attached to an automatic machine such as a soldering robot for use.

[0002]

2. Description of the Related Art Generally, an automatic machine such as a soldering robot for soldering electronic parts or the like supplies a trowel member for soldering to a tip of a work arm and a thread solder to a trowel of the trowel member. Attach the solder supply nozzle for
With the trowel member pressed against an object, the thread-like solder supplied from the supply nozzle is melted to perform soldering. In this case, what is important is that the tip of the trowel member is always pressed against the object with an appropriate force, and therefore, conventionally, the trowel member can be moved back and forth, By biasing 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 working arm, and even when the trowel member compresses the spring and retracts during soldering, the position of the supply nozzle is reduced. In other words, since the position of the supply nozzle relative to the iron tip changes relative to the iron tip, when the trowel member retracts, the supply nozzle strongly abuts the object, and the position shifts, breakage, or defective soldering. However, there is a problem in that it is apt to occur. Therefore, in general, the positional relationship between the iron tip and the supply nozzle is set within a safe range in consideration of the spring compression amount, but when the soldering conditions change and the iron tip pressing force increases or decreases. In addition, since the above setting must be changed each time, it is troublesome and the handling is complicated. Also, when the distance between the iron tip and the object becomes smaller than normal due to the dimensional error of the object to be soldered, the operating stroke of the iron tip is set according to the normal value. The amount of compression of the spring due to increases the supply nozzle strongly abuts the object,
It was unavoidable that breakage or displacement occurred.

[0004]

The main technical problem of the present invention is to press the trowel member against an object with an arbitrary pressing force by arranging the trowel member and the supply nozzle so that they can be displaced in synchronization with each other. Even if the supply nozzle is not pressed against the object, it is to provide a soldering head for an automatic machine, which is safe and easy to handle. Another technical object of the present invention is to provide a soldering head for an automatic machine in which setting of a relative positional relationship between a supply nozzle and a trowel member is easy.

[0005]

In order to solve the above problems, in the present invention, a soldering iron, which is attached to a working arm of an automatic machine so as to be movable back and forth by a cylinder, is pressed against an object for soldering. Of the trowel member and a solder supply nozzle for supplying a filamentous solder to the trowel end of the trowel member, and the trowel member is movable back and forth between the front end position and the rear end position on the rod of the cylinder. And is biased toward the front end position by the first spring, and the supply nozzle is attached to the trowel member so as to be movable back and forth between the front end position and the rear end position. A soldering head for an automatic machine is provided, which is biased by two springs toward a front end position, and the front end position of the supply nozzle is adjustable by an adjusting means.

Further, according to the present invention, a trowel member, which is attached to a working arm of an automatic machine so as to be movable back and forth by a cylinder for soldering by pressing a trowel tip against an object, and a trowel member of the trowel member. And a solder supply nozzle for supplying the thread solder first, the trowel member is fixed to the base member via a trowel mounting member, the base member to the rod at the front end position and the rear end position. Is attached to the front end position by a first spring, the supply nozzle is supported by a nozzle attaching member, and the nozzle attaching member is attached to the base member by the front end. Mounted so as to be movable back and forth between a position and a rear end position, and urged toward a front end position by a second spring,
A soldering head for an automatic machine is provided in which the front end position of the nozzle mounting member is adjustable by an adjusting means.

In the soldering head of the present invention having the above structure, the positional relationship between the iron member and the supply nozzle at the time of soldering is such that the iron tip and the tip of the nozzle are substantially at the same position, or It is set in advance by adjusting the front end position of the supply nozzle by the adjusting means so that the nozzle tip end portion occupies a slightly retracted position. During soldering, the rod of the cylinder extends so that the iron member and the supply nozzle advance together, and the iron tip of the iron member is pressed against the object. At this time, the trowel member retracts relatively to the rod by slightly compressing the first spring, and the pressing force of the trowel tip is increased by the amount of the reaction force corresponding to the compression amount.

On the other hand, the supply nozzle retreats together with the trowel member even if the trowel member is pressed against the object and moves backward, so that the positional relationship with the trowel member does not always change.
Therefore, it is not pressed against the object. When changing the positional relationship between the tip portion of the supply nozzle and the iron tip, the front end position of the supply nozzle may be adjusted in the front-rear direction by the adjusting means, whereby the solder supply position is set to the soldering site. It can be freely changed to a position where it is directly supplied or a position where it is supplied toward the side of the iron tip of the iron member.
As a result, various soldering can be supported.
According to a specific configuration aspect of the present invention, the adjusting means comprises:
The supply nozzle comprises an adjusting screw inserted between the engaging portion on the side of the working arm and the engaging portion on the side of the supply nozzle, and a nut screwed to the adjusting screw. It is configured to define the position of the side locking portion.

[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 its tip is shown. Reference numeral 2 is a soldering head attached to the working arm 1, and the soldering head 2
Has a trowel member 4 that presses the trowel 4a against the object 6 for soldering, and a solder supply nozzle 5 that supplies the filamentous solder 7 to the trowel 4a of the trowel member 4.

The trowel member 4 and the supply nozzle 5 are attached to a rod 9 of a cylinder 8 fixed to the working arm 1 so as to be movable back and forth in synchronization with each other by a mechanism described in detail below. . In this embodiment, the terms "front and rear" and "up and down" are substantially the same.

That is, a pair of front and rear stoppers 10 are provided at the tip of the rod 9 extending downward from the cylinder 8.
a, 10b are formed, and these stoppers 10a, 10b
The base member 12 is mounted between the front stopper 10a and the rear stopper 10b so that the base member 12 is movable in the axial direction of the rod 9, and the first spring 13 contracted between the rear stopper 10b and the front stopper 10a.
It is biased toward the front end position where it is locked to. Therefore,
The rear end position of the base member 12 is the position where the first spring 13 is maximally compressed.

The base member 12 is provided with a trowel mounting member 14
Are fixed by screws 14a, and the trowel member 4 is attached to the trowel mounting member 14 with the trowel 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. A second spring 18 contracted between the nozzle mounting member 15 and the base member 12 urges the rear stopper 17b toward the front end position where it abuts the upper surface of the base member 12. Therefore, the rear end position of the nozzle mounting member 15 is
This means that the second spring 18 is in the maximum compressed position.

A supporting column 19 is erected on the nozzle mounting member 15 so as to vertically penetrate the member.
9 through the support fitting 20 at the lower end of the supply nozzle 5
Is supported so that the tilt angle can be adjusted. The trowel member 4 is arranged so as to penetrate the nozzle mounting member 15 in a loosely inserted state. The trowel mounting member 14 and the nozzle mounting member 15 are coupled by a first slide portion 21 and a second slide portion 22 formed on them so as to be relatively slidable in the front-rear direction.

Further, between the working arm 1 and the nozzle mounting member 15, an adjusting means 24 for adjusting and changing the front end position of the nozzle mounting member 15 (and therefore the supply nozzle 5).
Is provided. This adjusting means 24 is used for the working arm 1.
An adjusting screw 26 is loosely inserted between the engaging portion 1a provided on the nozzle mounting member 15 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, the nut 27 is turned to shorten the adjusting screw 26, and the screw head 26a is engaged with the engaging portion 25 on the nozzle mounting member 15 side so that the front end position of the nozzle mounting member 15 is brought to that position. This allows the position of the supply nozzle 5 to be raised during soldering.

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 does not engage with the screw head 26a, and the supply nozzle during soldering (see FIG. 2). 5 position, the rear stopper 17b of the shaft portion 16
Is adjusted so as to occupy the front end position where it comes into contact with the upper surface of the base member 12, the positional relationship between the supply nozzle 5 and the trowel member 4 becomes substantially the same as the trowel tip 4a and the nozzle tip portion 5a. Is set in advance.

In a state where soldering has not been performed yet, as shown in FIG. 1, the rod 9 of the cylinder 8 is shortened so that the trowel member 4 and the supply nozzle 5 are separated from each other by the nozzle mounting member 15.
The side locking portion 25 is in a position where it abuts on the working arm 1 side locking portion 1a. When soldering, as shown in Figure 2,
The rod 9 of the cylinder 8 extends and the trowel member 4 and the supply nozzle 5 advance together, the trowel tip 4a of the trowel member 4 is pressed against the object 6, and the supply nozzle 5 is threaded to the soldering site. Solder 7 is supplied and soldering is performed.

At this time, the trowel member 4 slightly compresses the first spring 13 (about 1 mm) by pressing the trowel tip 4a against the object 6 and retracts relative 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 trowel member 4 compresses the first spring 13 and retreats, the trowel member 4 retreats together with the trowel member 4, so that there is always a constant distance between the supply nozzle 5 and the trowel member 4. The positional relationship will be maintained.

For this reason, the supply nozzle 5 is not pressed against the object 6, and therefore, there is no inconvenience such as displacement or damage of the supply nozzle 5 and defective soldering accompanying them. Moreover, even if the setting is changed so as to increase the compression amount of the first spring 13 and increase the pressing force of the iron tip 4a, 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 thus the trowel 4a as in the conventional art is used.
It is not necessary to change the positional relationship between the supply nozzle 5 and the trowel member 4 for the purpose of preventing displacement or damage of the supply nozzle 5 every time the pressing force of the supply nozzle 5 is increased or decreased, and the handling is easy.

Further, depending on the soldering conditions, as shown in FIG. 3, after the solder 7 is directly supplied from the supply nozzle 5 to the side surface of the iron tip 4a to be melted, the "secondary solder feed" is introduced to the soldering site. In order to carry out the above, the adjusting screw 26 in the adjusting means 24 is shortened to lock the locking portion 25 on the nozzle mounting member 15 side to the screw head 26a, thereby raising the front end position of the nozzle mounting member 15. Can be
As a result, the tip portion 5a of the supply nozzle 5 is 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 trowel member 4 can be easily set by the adjusting means 24.

The adjusting means 24 is not limited to the one shown in the drawing, and for example, the rear stopper 1 of the shaft portion 16 is used.
The position of 7b may be adjustable back and forth.
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 if the trowel member is pressed against an object with a desired pressing force, the supply nozzle is not pressed against the object and the automatic machine is safe and easy to handle. A 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 trowel member can be easily set, and various soldering can be dealt with.

[Brief description of drawings]

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

FIG. 2 is a side view showing a soldering state of the soldering head shown in FIG.

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

[Explanation of symbols]

1 Working Arm 1a Locking Part 2 Soldering Head 4 Trowel Member 4a Iron Point 5 Supply Nozzle 6 Object 7 Solder 8 Cylinder 9 Rod 12 Base Member 13 First Spring 14 Trowel Mounting Member 15 Nozzle Mounting Member 18 Second Spring 24 Adjustment Means 25 Locking part 26 Adjusting screw 27 Nut

Claims (3)

[Claims] 1. A trowel member, which is attached to a working arm of an automatic machine so as to be movable back and forth by a cylinder, for soldering by pressing a trowel tip onto an object, and a filamentous solder is supplied to the trowel tip of the trowel member. The trowel member is attached to the rod of the cylinder so as to be movable back and forth between the front end position and the rear end position, and is moved toward the front end position by the first spring. The supply nozzle is urged to be attached to the trowel member so as to be movable back and forth between a front end position and a rear end position, and is urged by a second spring toward the front end position. A soldering head for an automatic machine, wherein a front end position is adjustable by an adjusting means. 2. A trowel member, which is attached to a working arm of an automatic machine so as to be movable back and forth by a cylinder, for soldering by pressing a trowel tip against an object, and thread solder is supplied to the trowel tip of the trowel member. The trowel member is fixed to the base member via a trowel mounting member, and the base member is movable back and forth between the front end position and the rear end position on the rod. And is biased toward the front end position by the first spring, the supply nozzle is supported by the nozzle mounting member,
The nozzle mounting member is mounted on the base member so as to be movable back and forth between a front end position and a rear end position, and is urged toward the front end position by a second spring so that the front end position of the nozzle mounting member is A soldering head for an automatic machine, which is adjustable by adjusting means. 3. The soldering head according to claim 1 or 2, wherein the adjusting means includes an adjusting screw inserted between the engaging portion on the working arm side and the engaging portion on the supply nozzle side, and the adjusting screw. A nut that is screwed into the screw, and the adjustment screw is expanded and contracted by the nut to define the position of the locking portion on the supply nozzle side.