JP4559903B2 - Soldering head for automatic machine - Google Patents

Description

  The present invention relates to a soldering head for an automatic machine that is used by being attached to an automatic machine such as a soldering robot, and more particularly to a soldering head in which a soldering iron can be easily replaced.

  In general, an automatic machine such as a soldering robot that performs soldering of electronic parts or the like generally attaches a soldering head having a solder iron and a solder nozzle for supplying thread solder to the tip of a work arm. Is pressed against a soldering target such as a printed wiring board to melt and solder the thread solder supplied from the solder nozzle.

In such a soldering head, generally, when the soldering iron is detachably attached and the tip of the soldering is worn or another soldering iron having a different tip shape is used, the soldering iron is used. I try to replace it. However, since the soldering iron is usually firmly fixed to the head with a plurality of screws (for example, four), when replacing the soldering iron, loosen these screws with a tool such as a screwdriver in order, and remove the soldering iron. After setting a new soldering iron, it is necessary to perform operations such as tightening and fixing the screws in order. The work usually requires as much as 5 to 10 minutes, and the soldering work must be interrupted during that time, so there is a problem that work efficiency is lowered, and there has been a demand for improvement.
In addition, the part to which the screw for fixing the soldering iron is attached is often a very narrow space, and various members are arranged around it, so that the screw can be attached and removed using a screwdriver. Was very difficult to do.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a soldering head that can easily and quickly perform soldering iron replacement work without using a tool such as a screwdriver.

In order to solve the above problems, according to the present invention, a head substrate having an arm mounting portion for mounting on a working arm of an automatic soldering machine and a hook mounting portion for mounting a soldering iron, solder held by the iron holder A quick-operating attachment / detachment mechanism for detachably attaching the heel and the heel holder to the heel attachment portion of the head base, and the attachment / detachment mechanism rotates the heel holder directly with a fingertip so that the heel holder is attached to the heel holder. has a single operator for detaching the attachment portion, and a mutually two pairs of locking pins and the pin engaging holes of disengageably such positioning, the operator is in the iron holder, the soldering iron assembled in a direction intersecting the axis at all times and engaged state in該鏝holder for rotatably and drop-off prevention in a state of penetrating the該鏝holder, have a threaded portion at the tip projecting from該鏝holder And a pinch portion for rotational operation at the base end, and the pin holder is formed with two pin locking holes at positions on both sides of the operation element with the operation element interposed therebetween, The head mounting portion of the head base is provided with a screw hole for screwing the screw portion of the operation element, and two locking pins are provided at positions on both sides of the screw hole with the screw hole interposed therebetween. An automatic machine soldering head is provided.

In the present invention, a hook may be formed at the tip of the operating element instead of the screw portion, and a hook engaging hole may be formed at the flange mounting portion of the head base instead of the screw hole .

  In the present invention, the head base includes an arm attachment mechanism having the arm attachment portion, and a heel support mechanism coupled to the arm attachment mechanism so that the inclination angle can be adjusted. Thus, the heel mounting portion is formed in the heel support mechanism portion.

  According to the present invention, since the soldering iron can be attached to and detached from the iron attachment portion together with the iron holder by directly operating the operator with the fingertip, the soldering iron can be replaced without using a tool such as a screwdriver. It can be done easily and quickly.

  Hereinafter, a preferred embodiment of a soldering head according to the present invention will be described in detail with reference to the drawings. 1 to 4 show a first embodiment of the present invention. This soldering head includes an arm attachment portion 6 for attaching to a work arm R of an automatic soldering machine, and a hook for attaching a soldering iron 2. Quick operation type attachment / detachment mechanism for detachably attaching the head base 1 having the attachment portion 7, the solder rod 2 held by the rod holder 8, and the rod holder 8 to the rod attachment portion 7 of the head substrate 1. 3 and a solder nozzle 4 for supplying the thread solder 9 to the tip 2a of the solder rod 2.

The head base 1 includes an arm attachment mechanism 11 for attaching to the working arm R, and a heel support mechanism 12 coupled to the arm attachment mechanism 11 so that the inclination angle can be adjusted. .
The arm attachment mechanism portion 11 is composed of a fixing member 11A elongated in the lateral direction and a connecting member 11B elongated in the downward direction from one end side of the fixing member 11A. The arm attachment mechanism 11A is attached to the fixing member 11A. A portion 6 is formed, and two screw holes for attaching the connecting frame 12C of the heel support mechanism portion 12 and two locking pins for positioning are formed on the back side of the connecting member 11B. However, these screw holes and locking pins are not shown.

  Further, the heel support mechanism 12 includes a heel mounting frame 12A having a substantially rectangular shape when viewed from the front, a vertically long base frame 12B to which the heel mounting frame 12A is mounted, and a side from the upper end of the base frame 12B. And the arc-shaped connecting frame 12C extending toward the direction. The connecting frame 12C includes a plurality of sets of angle adjusting holes 13a and 13b, each having two sets positioned in the width direction, and a plurality of sets of locking holes 14a and 14b having two sets. The angle adjusting holes 13a and 13b and the locking holes 14a and 14b are selected, and the locking holes 14a and 14b are formed in the connecting member 11B of the arm mounting mechanism portion 11. A fitting pin (not shown) is fitted, and two fixing screws are screwed into the screw holes of the connecting member 11B through the angle adjusting holes 13a and 13b. They are connected at the required tilt angle.

  On the other hand, the saddle mounting frame 12A is formed with the flat saddle mounting portion 7 facing the front side at the upper end portion thereof, and on the saddle mounting portion 7, the operation element 3A provided on the saddle holder 8 and One screw hole 3C constituting the attaching / detaching mechanism 3 together with the pin locking holes 3B, 3B, and two locking pins 3D, 3D positioned above and below the screw hole 3C are provided.

  The soldering iron 2 has a tip 2a at the tip (lower end) of a cylindrical jacket 17 and an electric heater is built in the outer jacket 17. The soldering is performed by heating and melting the thread-shaped solder supplied from the solder nozzle 4. A rectangular attachment plate 18 that spreads in a flange shape is integrally attached to the base end portion (upper end portion) of the outer jacket 17, and the attachment plate 18 is a bottom portion of the heel holder 8 having a substantially rectangular hollow block shape. Are detachably attached by two screws 19, 19. As shown in FIG. 5, these screws 19 are arranged at one diagonal position of the mounting plate 18, and other diagonal positions different by 90 degrees are used for positioning to engage with each other. Pins 20 and locking holes 21 are provided in the mounting plate 18 and the eaves holder 8.

  Further, the heel holder 8 is formed with one operating element 3A that is directly operated by a fingertip and two pin locking holes 3B and 3B that are positioned above and below the operating element 3A for positioning. Has been. The operation element 3A has a screw shape, and is assembled to the heel holder 8 so as to be rotatable and locked in a state of penetrating the heel holder 8, and has a screw portion 3Ab at the tip. The base end portion has a circular knob 3Aa for rotating operation, and the outer periphery of the knob 3Aa is knurled. Then, in a state where the locking pins 3D and 3D of the flange mounting portion 7 are engaged with the pin locking holes 3B and 3B, the screw portion 3Ab of the operating element 3A is screwed into the screw hole 3C, thereby soldering. The scissors 2 are detachably attached to the scissor mounting frame 12A through the scissors holder 8.

  When removing the solder rod 2 from the rod mounting frame 12A, the solder rod 2 can be removed together with the rod holder 8 by turning the knob 3Aa with a fingertip to remove the operation element 3A from the screw hole 3C.

  Therefore, for the operation element 3A, the position where the screw portion 3Ab is screwed into the screw hole 3C is the mounting position for attaching the solder rod 2 to the rod mounting frame 12A, and the position where the screw portion 3Ab is removed from the screw hole 3C. However, this is a release position for detaching the solder rod 2 from the rod mounting frame 12A.

  The solder nozzle 4 is attached to the heel mounting frame 12A of the heel support mechanism portion 12 via a nozzle holding mechanism 26. The nozzle holding mechanism 26 includes a nozzle holder 26A at the tip end that supports the solder nozzle 4 in a tiltable manner, a shaft portion 26B extending in parallel to the solder rod 2 from the base end portion of the nozzle holder 26A, and the shaft portion 26B. There is a shaft support portion 26C that is supported in an adjustable manner, and an arc-shaped nozzle support frame 26D that surrounds the half circumference side of the soldering iron 2 and has the shaft support portion 26C attached to an intermediate position thereof. Is attached to the saddle mounting frame 12A.

  The soldering head having the above configuration is attached to the working arm R of the automatic soldering machine, and the soldering machine 2 is automatically controlled to press the tip 2a of the soldering iron 2 against the soldering target such as a printed circuit board. The soldering is performed by melting the thread solder 9 supplied from the solder nozzle 4.

  When it is necessary to replace the soldering iron 2 due to wear of the tip 2a or when it is necessary to use another soldering iron having a different shape of the tip 2a, the knob 3Aa of the operation element 3A is The operation rod 3 </ b> A is removed from the screw hole 3 </ b> C to remove the solder rod 2 together with the rod holder 8 from the rod mounting portion 7, and a new solder rod 2 held by another rod holder 8 is attached. The attachment is made by picking the operation element 3A attached to the heel holder 8 with the locking pins 3D and 3D of the heel attachment portion 7 engaged with the pin locking holes 3B and 3B of the heel holder 8. This is done by turning the portion 3Aa and screwing the screw portion 3Ab at the tip into the screw hole 3C of the flange attaching portion 7.

Thus, when exchanging the solder rod 2, the entire rod holder 8 can be easily and simply operated by directly rotating one operating element 3A attached to the rod holder 8 with a fingertip. The replacement work can be performed quickly. In addition, the operation element 3A is attached in a state of being always locked to the eaves holder 8 and is not detached from the eaves holder 8 in a normal use state, so that the operation element 3A is easy to handle. Only will not fall off and be lost.
When repairing or replacing the soldering tip 2a, heater, or the like of the soldering iron 2 removed as described above, the screw 19 is loosened and the soldering iron 2 is removed from the iron holder 8 and necessary work is performed in that state. Just do it.

  In the embodiment described above, the saddle mounting frame 12A, the base frame 12B, and the connecting frame 12C of the saddle support mechanism portion 12 are fixedly coupled as a whole. For this reason, when soldering a plurality of soldering points with the soldering iron 2, it is necessary to bring the tip 2a into contact with each soldering point by moving the work arm R up and down.

However, the saddle mounting frame 12A and the base frame 12B are connected so as to be slidable up and down via a linear guide mechanism (not shown), and an actuator such as an air cylinder is attached to the base frame 12B. By configuring the mounting frame 12A to move up and down, a plurality of soldering points can be soldered without moving the work arm R up and down.
Therefore, the soldering head of the illustrated embodiment is configured to be used for both of the above-described soldering operations only by attaching and detaching some related devices and members such as the near guide mechanism and the actuator.

  FIGS. 6 and 7 partially show a second embodiment of the present invention with respect to an attaching / detaching mechanism 3 for attaching / detaching the soldering iron 2. The attaching / detaching mechanism 3 attaches the iron holder 8 to the iron attaching frame 12 </ b> A. The attachment portion 7 is engaged and disengaged by a hook. That is, a short shaft-like hook 3Ad extends in the direction of both sides of the shaft portion 3Ac at the tip of the shaft portion 3Ac of the operation element 3A attached to the rod holder 8, and the shaft mounting portion 7 By forming a hook engaging hole 3E into which the portion 3Ac and the hook 3Ad can be fitted, inserting the shaft portion 3Ac and the hook 3Ad into the hook engaging hole 3E, and rotating the operation element 3A by 90 degrees, The hook 3Ad is locked to the hole edge of the hook engaging hole 3E.

The operating element 3A is urged toward the front side of the saddle holder 8 by a spring 33. With the operating element 3A pushed in, the hook 3Ad at the tip is inserted into the hook engaging hole 3E, and 90 degrees By releasing the push-in after the rotation, the hook 3Ad is elastically locked to the hole edge of the hook engagement hole 3E. In this case, it is desirable to form a stopper made of a step portion or the like at the hole edge so that the operation element 3A cannot be rotated 90 degrees or more.
When the soldering iron 2 is removed, the operation element 3A is reversely rotated by 90 degrees to unlock the hook 3Ad from the hook engaging hole 3E.

  Therefore, in the second embodiment, the position where the hook 3Ad is locked to the hook engaging hole 3E is the mounting position, and the position where the hook 3Ad is released from the hook engaging hole 3E is released. Release position.

  The edge of the hook engaging hole 3E may be an inclined cam surface that gradually increases in height (thickness) in the circumferential direction, and the operation element 3A may be tightened by the inclined cam surface. . When providing such an inclined cam surface, the spring 33 may be omitted.

  Thus, since the operating element 3A can be freely engaged and disengaged in the hook type, the operating element 3A only needs to be rotated by a smaller angle than the screw type in the first embodiment. The operation can be performed more easily and quickly.

  Since the configuration of the second embodiment other than the above is substantially the same as that of the first embodiment, the same components as those of the first embodiment are denoted by the same reference numerals and the description thereof is omitted. .

  In each of the above-described embodiments, the head base 1 is attached to the work arm R, and an arm attachment mechanism 11 is attached to the arm attachment mechanism 11 so that the inclination angle can be adjusted. Although the head base 1 is not limited to such a configuration, the head base 1 is not limited to such a configuration, but a medium for attaching the solder bar 2 held by the bar holder 8 to the working arm R of the automatic soldering machine. It goes without saying that any configuration may be used as long as the configuration is as follows.

1 is a front view of a first embodiment of a soldering head according to the present invention. It is a side view of FIG. It is a side view of the state which removed the soldering iron in FIG. FIG. 2 is a front view of the head base body with the soldering iron removed in FIG. 1. It is sectional drawing in the AA in FIG. It is a fragmentary sectional view which shows 2nd Embodiment of this invention about a heel holder. It is a partial front view which shows 2nd Embodiment of this invention about a heel attachment part.

Explanation of symbols

R Working arm 1 Head base 2 Solder rod 3 Detachment mechanism 3A Operator 3B Pin locking hole 3C Screw hole 3D Locking pin 3E Hook engagement hole 3Aa Knob 3Ab Screw 3A Hook 6 Arm mounting 7 Hook mounting 8 Holder 11 Arm mounting mechanism 12 Hook support mechanism

Claims (3)

A head substrate having an arm mounting portion for mounting on a work arm of an automatic soldering machine and a flange mounting portion for mounting a solder rod, a solder rod held by the rod holder, and the rod mounting of the rod holder on the head substrate. A quick operation type attaching / detaching mechanism for detachably attaching to the part,
The detaching mechanism, two pairs of locking pins and pin locking directly the rotation operation the trowel holder by a single operator for detaching the portion with the 鏝取, mutually engaged and disengaged freely positioning fingertips With holes,
The operation element is assembled to the heel holder in a state of being always locked to the heel holder so as to be rotatable and prevented from falling off while penetrating the heel holder in a direction crossing the axis of the solder rivet. It has a threaded portion at the tip that protrudes from the holder, and a knob for rotation operation at the base end,
The pin holder is formed with two pin locking holes at positions on both sides of the operation element with the operation element in between.
The head mounting portion of the head base is provided with a screw hole for screwing the screw portion of the operation element, and two locking pins are provided at positions on both sides of the screw hole with the screw hole interposed therebetween. ing,
This is a soldering head for automatic machines. A head substrate having an arm mounting portion for mounting on a work arm of an automatic soldering machine and a flange mounting portion for mounting a solder rod, a solder rod held by the rod holder, and the rod mounting of the rod holder on the head substrate. A quick operation type attaching / detaching mechanism for detachably attaching to the part,
The detaching mechanism, two pairs of locking pins and pin locking directly the rotation operation the trowel holder by a single operator for detaching the portion with the 鏝取, mutually engaged and disengaged freely positioning fingertips With holes,
The operation element is assembled to the heel holder in a state of being always locked to the heel holder so as to be rotatable and prevented from falling off while penetrating the heel holder in a direction crossing the axis of the solder rivet. It has a hook at the tip that protrudes from the holder, and a knob for rotation operation at the base end,
The pin holder is formed with two pin locking holes at positions on both sides of the operation element with the operation element in between.
The hook mounting portion of the head base is provided with a hook engaging hole for locking the hook of the operating element, and two hook engagement holes are provided on both sides of the hook engaging hole. The locking pin is provided,
This is a soldering head for automatic machines.   The head base includes an arm attachment mechanism having the arm attachment portion, and a heel support mechanism coupled to the arm attachment mechanism so that an inclination angle can be adjusted. The soldering head according to claim 1, wherein the flange mounting portion is formed on the soldering head.

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