JPH09308964A - Iron tip fitting device for automatic soldering machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a soldering head for an automatic soldering machine capable of fitting a soldering iron of any structure in a surely positioned condition by a simple positioning mechanism. SOLUTION: In a head 2 having a tip holder 3 fitted to a wording arm 1 of an automatic soldering machine and a tip member 4 which is attachable/ detachable to/from the tip holder 3, a sleeve 9 having an engagement part 10 for positioning is fitted to an outer circumference of a body 6 of the tip member 4, and the tip holder 3 is provided with a chucking member 13 provided with a fitting hole 14 to insert the tip member 4 therein, a nut member 15 to fix the tip member 4 inserted in the fitting hole 14, and a positioning member 16, and an engagement part capable of being engaged with the engagement part 10 at the sleeve end is formed on a forward end of a cylindrical part 16a of the positioning member 16.

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 The iron tip of a soldering iron used for soldering electronic parts has various tip shapes. For example, a conical or frusto-conical shape with a gradually tapering shape, a shape in which the tip of a cylinder is cut off obliquely, a shape in which the tip is flattened like a minus driver, and a dent is provided at the tip There are items, etc., and they are used properly according to the purpose.

In an automatic machine such as a soldering robot, generally, only the iron tip can be replaced if necessary, but in this case, it is important that the iron tip has a directional tip shape. If it has, it means that the iron tip can always be attached in a desired orientation. That is, when the tip shape of the iron tip is flattened like a flat-blade screwdriver, when replacing it with an iron tip having the same shape but a different tip width, the same direction as that before replacement It is necessary to attach to. Otherwise, the automatic machine would have to be taught each time to make the movement suitable for the direction of the iron after replacement, and this would consume a lot of time and effort. .

In order to solve such a problem, for example, in Japanese Utility Model No. 3001893, a cross-shaped engaging groove is formed on the rear end surface of the iron tip, and a contact surface of the iron tip holder with the rear end surface of the iron tip is formed. It is disclosed that a cross-shaped projection is formed on the shaft, and the locking groove and the projection are engaged with each other so that the iron tip can be attached to the iron tip holder in a rotationally positioned state. However, in the above-mentioned conventional one, since the locking groove is formed in the rear end surface of the iron tip, there is no problem when the iron tip is formed of a non-hollow member as a whole, for example, In the case of a hollow structure with a built-in heater, etc., where electrodes for electrical connection are formed on the rear end surface or lead wires are led out, a locking groove is formed on the rear end surface Therefore, it cannot be positioned and mounted. Also, since it is almost impossible to form a locking groove on the rear end surface of the existing iron, it is almost impossible to use it for positioning only the iron tip with the locking groove formed on the rear end surface at the manufacturing stage. However, there was a problem that it was not versatile.

[0005]

SUMMARY OF THE INVENTION A main object of the present invention is to securely attach a trowel which is not provided with a locking groove for positioning on its rear end face in a surely positioned state by a simple positioning mechanism. It is possible to provide a soldering head for an automatic machine. Another object of the present invention is to provide a versatile automatic machine that can be used for positioning by simply attaching a simple member even to an existing iron tip that does not have a means for positioning. It is to provide a soldering head. Still another object of the present invention is to provide a soldering head for an automatic machine, which can be used only by exchanging a part of parts even if the shape of the engaging portion for positioning is different. To provide. Still another object of the present invention is to provide a soldering head for an automatic machine, which is capable of fixing the iron tip without damaging it by tightening and which has excellent safety.

[0006]

In order to solve the above-mentioned problems, according to the present invention, there is provided a tip holder for attaching to a working arm of an automatic machine, and a tip member detachable from the tip holder. The trowel member has a cylindrical body with a built-in heater, a heat generating portion for solder welding provided at the tip of the body, and a positioning member at the rear edge attached to the outer periphery of the body. A sleeve having an engaging portion, wherein the iron tip holder is provided with a chuck member having a mounting hole for inserting the iron tip member, and for fixing the iron tip member inserted in the mounting hole. A soldering head for an automatic machine is provided, which has a nut member and a positioning engaging portion that is positioned around the mounting hole and that can engage with an engaging portion of the sleeve end.

In the soldering head having the above structure, when the iron tip member is inserted into the attachment hole of the chuck member and the engagement portion of the rear end portion of the sleeve is engaged with the engagement portion around the attachment hole, Since the orientation of the iron tip member is regulated, the iron tip member can be fixed in a desired orientation by tightening the nut member in that state. As a result, even if the iron tip member is structurally incapable of forming a locking groove on its rear end surface, it has a sleeve with an engaging portion fitted around its outer periphery and an engaging portion formed around the mounting hole. With the engagement of, it is possible to mount the device in a surely positioned state. In addition, even with an existing trowel that does not have means for positioning,
Only by attaching the above-mentioned sleeve, it can be reliably used for positioning.

According to one specific configuration of the present invention, the iron holder has a removable positioning member having a tubular portion inserted into a mounting hole of a chuck member, and the tubular portion of the positioning member. The engaging portion is formed at the tip of the. As a result, even a trowel member having a different engagement portion formed on the sleeve can be simply and surely dealt with by replacing it with a positioning member having an engagement portion suitable for it.

According to another specific embodiment of the present invention,
One of the engaging portions provided on the sleeve and the positioning member is formed by a mountain-shaped projection formed by cutting the member end obliquely and symmetrically with respect to the central axis, and the other is formed by a V-shaped recess. . According to a preferred configuration mode of the present invention, the chuck member has a tightening portion capable of reducing the diameter, and the tightening portion is tightened from the outside by a nut member to reduce the diameter, thereby making the iron tip member of the sleeve It is to be fixed in position. This allows the trowel member to
It can be fixed to the iron holder without damaging it by tightening. In the present invention, it is desirable that the heater built in the iron tip member is a high frequency induction heating type heater.

[0010]

An embodiment of the present invention will be described below in detail with reference to the drawings. In FIG. 1, 1 is a working arm of a soldering robot which is an automatic machine, and 2 is a soldering head attached to the tip of the working arm 1 by appropriate means.
Is a trowel holder 3 attached to the working arm 1.
And the iron tip member 4 which is attachable to and detachable from the iron tip holder 3.

As shown in FIG. 3, the iron tip member 4 has an elongated cylindrical body 6 having a built-in heater, and the tip of the body 6 is shown by the heat from the heater. A heat generating portion 7 for melting and applying solder to the target portion is formed, and a male connector 8 for connecting the heater to a power source is formed at the rear end portion of the body 6, and the male connector 8 is formed. The male terminal 8a is incorporated therein. A cylindrical sleeve 9 having a shorter length than the body 6 is attached to a part of the outer periphery of the body 6 at a position slightly closer to the rear end than the center thereof.

The heat generating portion 7 has a tip shape according to the application,
For example, it has a directional tip shape such as a flattened shape like a flat-blade screwdriver, a shape in which a tip of a cylinder is cut off obliquely, or a shape in which a dent is provided at the tip. The sleeve 9 has an engaging portion 10 for positioning at the rear edge thereof, and the engaging portion 10 is cut into two parts by cutting the sleeve end obliquely and symmetrically with respect to the central axis. It is formed as a mountain-shaped protrusion 10a having inclined surfaces 10b, 10b on both sides. And this engaging portion 1
0 is formed in a direction that matches the directionality of the tip shape of the heat generating portion 7. The apex angle θ of the protrusion 10a is preferably 90 degrees.

A high frequency induction heating type heater is used as the heater built in the iron tip member 4. With this heater, the temperature rises very quickly and the temperature control is easy. However, the heater is not limited to such a heating type heater, and a heater of a type that generates heat by resistance can also be used.

On the other hand, as shown in FIG. 2, the iron tip holder 3 has a mounting hole 1 into which the iron tip member 4 is inserted.
4, a chuck member 13 provided at the center, a nut member 15 screwed to the chuck member 13 to fix the iron tip member 4 inserted into the mounting hole 14, and a nut member 15 around the axis of the iron tip member 4. Removable positioning member 1 for determining orientation
6 is provided.

The chuck member 13 has, at its tip,
The nut member 15 has a small-diameter tightening portion 13a for tightening and fixing the iron tip member 4. This tightening part 1
The reference numeral 3a designates a hole diameter of the mounting hole 14 which can be changed by a plurality of notches 18 formed in the axial direction, and a screw portion 19 for screwing the nut member 15 and a cam receiving surface inclined in a tapered shape. 20 and the cam receiving surface 20
Is a cam surface 2 in which the tip of the nut member 15 is inclined in a tapered shape.
1 and the nut member 15 is tightened, so that the tightening portion 13a is inserted through the cam surface 21 and the cam receiving surface 20.
Can be displaced in the radial direction. The hole diameter of the attachment hole 14 is formed so that the sleeve 9 of the iron tip member 4 is fitted exactly in the portion penetrating the tightening portion 13a, and the portion on the rear end side (working arm side) than that. Has a slightly enlarged pore size.

The positioning member 16 is in contact with a rear end surface of the chuck member 13 and a cylindrical portion 16a having an outer diameter and a length that can be fitted into the large diameter portion of the attachment hole 14 of the chuck member 13. Flange-shaped mounting part 16b that contacts
And is fixed to the chuck member 13 by a plurality of bolts 22 at the mounting portion 16b. The sleeve 9 of the trowel member 4 is attached to the tip of the tubular portion 16a.
Engaging portion 2 for positioning that can be mutually engaged with the engaging portion 10 of
5, the engaging portion 25 is formed by a V-shaped recess cut in the central portion of the tip end surface of the tubular portion 16a. A female connector 23 extending from the working arm 1 is fitted inside the cylindrical portion 16a, and a female terminal 23 that communicates with a power source is provided.
The male connector 8 of the iron tip member 4 is fitted into the female connector 23 provided with a so that the male terminal 8a is fitted and connected to the female terminal 23a.

In the soldering head having the above construction, the iron tip member 4 is inserted into the mounting hole 14 of the chuck member 13 from the rear end side with the nut member 15 loosened as shown in FIG. The engaging portion 10 at the end is used as the positioning member 1.
6 is engaged with the engaging portion 25 at the tip of the iron tip member 4,
The direction of rotation of is defined. Therefore, by tightening the nut member 15 in this state to reduce the diameter of the tightening portion 13a, the iron tip member 4 can be fixed in a predetermined position.

As a result, even if the iron tip member is structurally incapable of forming a locking groove on its rear end surface, the sleeve 9 with the engaging portion 10 fitted on the outer periphery thereof and the mounting hole 14 are surrounded. By engaging with the engaging portion 25 positioned at, it can be mounted in a surely positioned state. Further, even an existing iron tip member having no positioning means can be reliably used for positioning only by performing a simple process of attaching the sleeve 9.

Moreover, there is no particular restriction on the length and the mounting position of the sleeve 9, and the sleeve 9 can be freely set according to the structure of the iron tip member 4 and the iron tip holder 3.
For a trowel member having a very wide range of application and in which the shape of the engaging portion 10 formed on the sleeve 9 is different, the positioning member 16 is replaced with one having an engaging portion 25 adapted to it. By doing so, it is possible to respond easily and surely. Further, the portion where the iron tip member 4 is fastened by the fastening portion 13a of the chuck member 13 is the sleeve 9 and the body 6 is not directly fastened, so that the body 6 is not damaged at all. .

The engagement portion 1 at the rear end of the sleeve 9 is also provided.
0 is formed by a mountain-shaped projection 10a having two inclined surfaces 10b, 10b on both sides, and the positioning member 16
Since the engaging portion 25 at the tip end of the is formed by a V-shaped recess corresponding to this, high positioning accuracy can be obtained despite the fact that the shapes thereof are simple and the machining is very easy. .

In the above embodiment, the sleeve 9 of the iron tip member 4 is formed with the engaging portion 10 formed of a projection, and the positioning member 16 is formed with the engaging portion 25 formed of a recess. In addition, the positioning member 16 has an engaging portion 1 formed of a protrusion.
0 may be formed, and the engaging portion 25 formed of a recess may be formed in the sleeve 9 of the iron tip member 4. Alternatively, the engagement portion may be formed in a shape other than the shape of the embodiment, for example, a shape provided with one inclined surface engaging with each other or a shape provided with three inclined surfaces at equal angles. In short, it is only necessary that they have concave and convex shapes that can complement each other.

[0022]

As described above, according to the soldering head of the present invention, the sleeve provided with the positioning engaging portion at the rear end is attached to the outer periphery of the iron tip member, and the engagement of the rear end of the sleeve is performed. Since the mating part is engaged with the engaging part around the mounting hole of the iron tip holder, even if the iron tip member is structurally not capable of forming the locking groove on the rear end face, The fitted sleeve with the engaging portion allows the device to be mounted in a surely positioned state. Further, even an existing iron tip having no means for positioning can be surely used for positioning only by performing a simple process of attaching the sleeve. Moreover, even for the iron tip member in which the shape of the engaging portion formed on the sleeve is different, the positioning member can be simply and surely dealt with by exchanging the positioning member with one having the engaging portion adapted to it. . Further, since the iron tip member is fastened and fixed at the position of the sleeve, the iron tip member can be fixed to the iron tip holder without being damaged by the tightening.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a soldering head according to the present invention.

FIG. 2 is a cross-sectional view of the soldering head of FIG. 1 with a trowel member removed.

FIG. 3 is a side view of the iron tip member.

[Explanation of symbols]

1 Working Arm 2 Soldering Head 3 Iron Tip Holder 4 Iron Tip Member 6 Body 7 Heat Generation Section 9 Sleeve 10, 25 Engagement Section 10a Protrusion 13 Chuck Member 13a Tightening Section 14 Mounting Hole 15 Nut Member 16 Positioning Member 16a Cylindrical Section

Claims (5)

[Claims] 1. A tip holder for attaching to a working arm of an automatic machine, and a tip member detachable from the tip holder, wherein the tip member has a cylindrical body containing a heater. ,
A heat generating portion for solder welding provided at the tip of the body,
A chuck member provided on the outer periphery of the body, the sleeve having a rear end edge having a positioning engaging portion, and the iron tip holder having a mounting hole for inserting the iron tip member; A nut member for fixing the iron tip member inserted into the mounting hole, and a positioning engaging portion that is positioned around the mounting hole and is engageable with the engaging portion of the sleeve end. , Soldering head for automatic machines. 2. The soldering head according to claim 1, wherein the iron holder has a detachable positioning member having a tubular portion inserted into an attachment hole of a chuck member, and the tubular portion of the positioning member The engaging portion is formed at the tip. 3. The soldering head according to claim 1, wherein one of the engaging portions provided on the sleeve and the positioning member has a member end cut off obliquely and symmetrically with respect to the central axis. Which is formed by a mountain-shaped protrusion and the other is formed by a V-shaped depression. 4. The soldering head according to claim 1, wherein the chuck member has a tightening portion capable of reducing the diameter, and the tightening portion is tightened with a nut member to reduce the diameter. , The above-mentioned trowel member is fixed at the position of the sleeve. 5. The soldering head according to claim 1, wherein the heater incorporated in the iron tip member is a high frequency induction heating type heater.