JP4304164B2 - Solder recycling equipment - Google Patents

Description

  The present invention relates to a solder recycling apparatus for recycling solder that can be reused from solder dross.

In the process of soldering a printed wiring board or the like, when the solder contained in the solder bath is exposed to air, it is oxidized and generates solder scraps (solder dross). If it is used while containing solder scraps, it causes deterioration of the quality of soldering, so the solder scraps have been removed and discarded.
However, solder scraps contain a lot of usable solder. In particular, solder made of tin, silver, copper, etc. is expensive, so it is desirable to take out usable solder from the solder scrap and reuse it. In order to realize this, there is a solder recycling apparatus that, after putting solder scraps into the melting tank, heats and stirs the solder scraps in the melting tank with a heater and separates them into solder and oxide (scraps). (For example, refer to Patent Document 1).
JP 2001-234259 A

In conventional solder recycling equipment, the melting tank is integrally fixed to the main body frame (casing), so when multiple types of solder scraps are to be recycled, the melting tank is cleaned before throwing in different types of solder scraps. The cleaning work was also difficult.
SUMMARY OF THE INVENTION An object of the present invention is to provide a solder recycling apparatus that can efficiently recycle solder scraps generated during the soldering operation of a printed wiring board or the like and can be easily cleaned. .

In order to achieve the above object, a solder recycling apparatus according to the present invention comprises a heater, a heating casing having an upper opening-shaped storage space provided with the heater at a lower portion, and an inner pot for introducing solder scraps. The inner hook is removably inserted into the housing space of the casing, and the inner hook has a pair of protrusions having a lower groove on the inner peripheral surface of the upper end opening at a 180 ° symmetrical position. and, and, equipped with a lifting device having engageable locking portion to the pair of the lower groove in the inner pot further comprises a cover member for lidding the upper end opening of the inner pot, the lid member A stirring unit that is attached in a penetrating manner and has a stirring blade at the lower end and a manual handle at the upper end that stirs the solder debris charged into the inner pot, and both the lid member and the stirring unit are configured to be removable from the kettle, The lid member is composed of a disc-shaped upper surface portion and a peripheral edge portion provided in a downward projecting manner on the edge of the upper surface portion, and in the covered state, the peripheral edge portion is disposed outside the upper edge of the inner hook. It is what.

The present invention has the following remarkable effects.
According to the solder recycling apparatus of the present invention, it is possible to efficiently melt and reuse a plurality of types of solder scraps. That is, when regenerating multiple types of solder scraps, if the inner hooks are provided for each type of solder scraps, it is only necessary to replace the inner pots with the casing. There is no need to clean.
Further, since the inner hook is detachable from the casing, the inner hook and the casing can be easily cleaned. Furthermore, since the inner hook can be carried, the casing can be installed in a place where it is easy to exhaust, and the work environment can be prevented from deteriorating.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
In FIG. 1 and FIG. 2, reference numeral 1 denotes a heating casing having an upper opening-shaped storage space 3, and a rod-shaped heater 11 is provided at the lower portion of the casing 1. A circular insertion port 14 is formed at the upper end of the casing 1, and an inner pot 2 for inserting solder waste H into the storage space 3 is inserted from the insertion port 14 so as to be removable.

  The casing 1 includes a cylindrical storage portion 16 having a bottom portion, and a control portion 17 that controls the heater 11 and the like attached to the outer peripheral surface of the storage portion 16. The storage unit 16 has a storage space 3, and a metal heating platen 15 is disposed below the storage space 3, and each of the four hole portions 18 formed in the heating plate 15 has a rod-shaped heater 11. Is inserted horizontally. The inner pot 2 is placed on the heating board 15. The heating panel 15 is formed in a substantially square shape in plan view (see FIG. 2). Further, a replacement hole 33 for replacing the heater 11 penetrating into the storage space 3 is formed in the lower portion of the outer peripheral surface of the storage portion 16 (see FIG. 3). Four leg members 32 project downward from the bottom surface of the storage portion 16. The control unit 17 includes a temperature adjusting device for the heater 11, a timer, a buzzer, and the like (not shown).

  The upper end opening 8 of the inner hook 2 is covered with a lid member 10, and a stirring unit 9 is attached to the lid member 10 so as to be inserted therethrough. Both the lid member 10 and the stirring unit 9 can be detached from the inner pot 2. Further, the stirring unit 9 has a stirring blade 12 for stirring the solder scrap H introduced into the inner pot 2 at its lower end, and a manual handle 13 at its upper end.

  As shown in FIGS. 2 and 3, a holding member 21 having an insertion hole 22 is attached to the center of the top surface of the lid member 10, and the stirring unit 9 has a shaft portion 19 that is rotatably inserted into the insertion hole 22. Have. A ring-shaped member 20 for holding a position that contacts the upper end of the holding member 21 is attached to the shaft portion 19 with a set screw or the like. Further, an attachment portion 23 in which three stirring blades 12 are arranged at equal intervals is attached to the lower end of the shaft portion 19, and a crank-shaped manual handle 13 is detachably attached to the upper end. Each stirring blade 12 is provided so as to be inclined in the same direction with respect to the rotation surface of the blade 12.

In FIG. 3, the upper edge of the inner hook 2 and the lid member 10 are arranged above the insertion port 14 of the casing 1. The lid member 10 is composed of a disc-shaped upper surface portion 24 and a peripheral edge portion 25 provided in a downward projecting manner on the edge of the upper surface portion 24, and the peripheral edge portion 25 is the upper edge of the inner hook 2 in the covered state. Arranged outside. That is, the lid member 10 is prevented from being detached from the inner hook 2 even if the rotational vibration of the stirring unit 9 is transmitted to the lid member 10 during the stirring of the solder scrap H. The inner hook 2 is formed in a circular shape in plan view (see FIG. 2).
A pair of handles 26, 26 project from the upper surface portion 24 of the lid member 10, and the handle 26 has a wooden grip portion 27 so that the inner hook 2 and the lid member 10 are not heated even when heated. In addition, the handles 26 and 26 are each formed by bending a single metal wire, and the metal wire is wound in a coil shape (spiral) at the intermediate portion to form the grip portion 27. Good.
Further, a guide pipe 28 for inserting a sensor for measuring the temperature of the solder scrap H introduced into the inner hook 2 is provided in a penetrating manner on the upper surface portion 24 of the lid member 10.

5 and 6, the inner peripheral surface of the upper end opening 8 of the inner hook 2 has a pair of protrusions 4 and 4 having a lower groove 5 at 180 ° symmetrical positions. Reference numeral 6 denotes a metal lifting tool for taking out the inner hook 2 from the casing 1, and the lower left and right ends of the lifting tool 6 have a locking portion 7 that can be engaged with the lower groove 5. . The lifting tool 6 includes a handle portion 30 formed by bending a single wire rod into a U-shape, and linear support portions 31 attached to both ends of the handle portion 30. The handle portion 30 and the support portion 31 are circular in cross section, and have locking portions 7 and 7 at both ends of the support portion 31.
Moreover, the upper end part of the downward ditch | groove 5 is formed in arc shape or circular arc shape (refer FIG. 3).
Further, a scale for measuring the amount of solder scrap H introduced is provided on the inner peripheral surface of the inner hook 2 (not shown).
A plurality of inner pots 2 may be provided according to the type of solder scrap H to be reused.

The use method (action) of the above-described solder recycling apparatus of the present invention will be described.
In FIG. 1, the manual handle 13 is first removed from the shaft portion 19 of the stirring unit 9, and then the lid member 10 and the stirring unit 9 (excluding the manual handle 13) are held in the inner pot by holding the handle 26. Remove from 2. Then, the solder scrap H is put into the inner hook 2, and the upper lid 8 is covered with the lid member 10 and the stirring unit 9 covered together. The controller 17 is operated to cause the heater 11 to generate heat, and the solder scrap H is heated to about 300 °. When the heated solder scrap H is melted, the manual handle 13 is attached to the shaft portion 19 of the stirring unit 9, and the handle 13 is turned by hand to stir the melted solder scrap H. By stirring the solder scrap H in a molten state, the solder and oxide (debris) are separated from the solder scrap H.

  After separating the solder scrap H into solder and oxide, as shown in FIG. 4, the manual handle 13 is removed from the shaft portion 19 of the stirring unit 9, and the lid member 10 and the stirring member (excluding the manual handle 13) are stirred from the inner pot 2. Remove unit 9 together. Then, as shown in FIGS. 5 and 6, the lifting tool 6 is inserted into the inner hook 2 from the upper end opening 8, and the locking portions 7 and 7 of the lifting tool 6 are recessed downward from the protrusions 4 and 4. Fit into the grooves 5 and 5 and lock. After locking the locking portion 7 in the lower concave groove 5, the lifting tool 6 is pulled up and the inner hook 2 is taken out from the casing 1. Since the oxide separated in the inner pot 2 floats on the solder, only the oxide floating with a scissors or the like is removed and removed, and the inner pot 2 is transported to a device (place) for soldering only reusable solder. .

  If it is desired to reuse a different kind of solder scrap H, another inner hook 2 is inserted into the casing 1 and the solder scrap H is inserted into the inner hook 2 so that the solder scrap H is similar to the above description. May be heated, melted, and stirred.

As described above, the solder recycling apparatus of the present invention includes the heater 11, the heating casing 1 having the upper opening-shaped storage space 3 provided with the heater 11 in the lower portion, the inner pot 2 into which the solder scrap H is charged, Since the inner hook 2 is inserted into the housing space 3 of the casing 1 so as to be removable, a plurality of types of solder scraps H can be efficiently melted and reused. That is, when regenerating a plurality of types of solder scrap H, if the inner pot 2 is provided for each type of solder scrap H, it is only necessary to replace the inner pot 2 with the casing 1, and a different type of solder scrap H is introduced. It is not necessary to clean the inner pot 2 before starting.
Further, since the inner hook 2 can be attached to and detached from the casing 1, the inner hook 2 and the casing 1 can be easily cleaned.
Furthermore, since the inner pot 2 can be carried, it is not necessary to install the casing 1 near the place where the solder is used, it can be installed in a place where it is easy to exhaust, and the work environment can be prevented from deteriorating.

  Further, the inner hook 2 has a pair of protrusions 4, 4 having a lower groove 5 on the inner peripheral surface of the upper end opening 8 at a 180 ° symmetrical position and can be engaged with the lower groove 5. Since the lifting tool 6 having the locking portions 7 and 7 is provided, the inner hook 2 can be easily and smoothly inserted into and removed from the casing 1, and the inner hook 2 can be easily carried.

Further, a lid member 10 for covering the upper end opening 8 of the inner hook 2 and a stirring blade 12 attached to the lid member 10 so as to be inserted therethrough and agitating the solder scrap H introduced into the inner hook 2 are provided at the lower end. And the stirring unit 9 having the manual handle 13 at the upper end, and the lid member 10 and the stirring unit 9 are both configured to be removable from the inner pot 2. Attachment / removal to / from the hook 2 can be performed easily and quickly, and the working time can be shortened. Further, during the stirring of the solder scrap H, even if the rotational vibration of the stirring unit 9 is transmitted to the lid member 10, the lid member 10 is not detached from the inner pot 2.

It is a side view which shows embodiment of this invention. It is a top view. It is a front view. It is a perspective view for description. It is a front view which shows the state which took out the inner hook. It is a side view which shows the state which took out the inner hook.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Casing 2 Inner hook 3 Storage space 4 Protruding part 5 Downward groove 6 Lifting tool 7 Locking part 8 Upper end opening part 9 Stirring unit
10 Lid member
11 Heater
12 Stir blade
13 Manual handle H Hands

Claims (1)

A heater (11), a heating casing (1) having an upper opening-shaped storage space (3) provided in the lower portion of the heater (11), an inner pot (2) for charging solder scraps (H), The inner hook (2) is removably inserted into the storage space (3) of the casing (1) ,
The inner hook (2) has a pair of protrusions (4) and (4) having a lower groove (5) on the inner peripheral surface of the upper end opening (8) at a 180 ° symmetrical position,
And a lifting tool (6) having locking portions (7) and (7) engageable with the pair of lower concave grooves (5) and (5) of the inner hook (2),
Further, a lid member (10) for covering the upper end opening (8) of the inner hook (2), and solder attached to the lid member (10) so as to be inserted into the inner hook (2). A stirring unit (9) having a stirring blade (12) for stirring the waste (H) at its lower end and a manual handle (13) at its upper end, the lid member (10), the stirring unit (9), Are configured to be removable from the inner hook (2),
The lid member (10) includes a disc-shaped upper surface portion (24) and a peripheral edge portion (25) provided in a downward projecting manner on the edge of the upper surface portion (24). (25) is a solder recycling apparatus, which is disposed outside the upper edge of the inner hook (2) .

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