JPH06134547A - Pen type heating tool - Google Patents

Abstract

PURPOSE: To provide an easy-to-handle heating tool which is held by hand in a manner as to hold a pencil, injects the heated air heated by a halogen lamp to a region irradiated with the spot light of the halogen lamp and is capable of locally heating and dissolving low melting material, such as wax or solder. CONSTITUTION: The hollow part of an axial cylinder which is hollow and slender and has a nozzle 13 having a small diameter at the front end is internally provided with the halogen lamp 11 for casting light outside from the nozzle 3. An air pump 12 is connected to the axial cylinder. The air is sent from the air pump into the hollow part and is ejected outside from the nozzle 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is a wax type tree-like assembly made of low melting material such as wax used in lost wax casting, correction, deburring, and other work made of low melting material locally. The present invention relates to a pen-type heating tool suitable for intensively heating a pen.

[0002]

2. Description of the Related Art Conventionally, a soldering mold for lost wax casting is usually assembled and modified by a soldering iron heating method. or,
A non-fusing type soldering device which uses the heat of light emitted from a halogen lamp as a heat source is known from Japanese Patent Application Laid-Open No. 1-294391.

[0003]

When a wax mold for lost wax casting is assembled and repaired with a soldering iron, the heated iron tip directly hits the solder, resulting in local excessive melting and denting, and In addition, since it is a protruding mold for lost wax casting, it impedes the flow of molten metal during casting. Further, since the brazing material adheres to the tip portion of the solder, the wax tends to become smoke and the working environment tends to be significantly deteriorated. Further, in the apparatus disclosed in Japanese Patent Laid-Open No. 1-29439, since it is necessary to use a reflecting mirror for focusing on the heat beam of the halogen lamp on the processing portion, the apparatus becomes large in size and can be manually operated like a pencil. It is impossible to make it compact so that you can carry it around.

[0004]

In view of the above, the present invention has been made in view of the above.
It can be held by hand like a pencil, and the heating point of the lost wax wax type work can be easily limited by the light of the halogen lamp.It is hollow and long and has a small diameter at the front end. A halogen lamp for irradiating light from the nozzle to the outside is provided in the hollow portion of the barrel having the nozzle, and an air pump is connected to the barrel to feed air from the air pump into the hollow portion, and It is characterized in that it is designed to squirt.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the illustrated embodiment, 10 is a hollow and elongated shaft cylinder, 11 is a halogen lamp, and 12 is an air pump. The barrel 10 has a small-diameter nozzle 13 at the front end, and after the nozzle 13, the conical portion 1 whose diameter decreases toward the nozzle.
4, a plurality of heat radiation fins 16 are provided after the conical portion 14 in the axial direction away from the outer circumference of the cylindrical portion 15, and behind the cylindrical portion 15 is a grip 17 having a larger diameter. . The hollow portion 10 ′ of the shaft cylinder has a small diameter nozzle opening 13 ′ on the inner circumference of the nozzle 13 and a conical opening 1 corresponding to the conical portion 14.
4 ', and then there is a cylindrical opening 15' corresponding to the cylindrical portion 15, and the cylindrical opening 15 'ends before reaching the grip 17,
After that, a thin through hole 18 is formed.

A support body 20 for supporting a socket 19 for mounting / dismounting the halogen lamp 11 is concentrically attached to the cylindrical opening 15 'by adhesion or the like, and a lead wire 21 extending from the socket 19 passes through the through opening 18 and the shaft. It goes out from the rear end of the tube 10. In order to replace the halogen lamp 11 attached to the socket 19, the shaft tube is cut back and forth in the middle of the cylindrical portion 15,
The screw engaging portion 22 makes it detachable. This barrel 10
Is about 20 cm long so that it can be held by hand like a pencil, the diameter of the cylindrical portion 15 is about 10 mm, the diameter of the grip 17 is about 15 mm, and the nozzle opening 13 '
It is advisable to prepare a large, medium, or small number of inner diameters in the range of about 0.8 to 2.0 mm so as to accommodate changes in the size of the heating region of the work. The nozzle 13 shown in the drawing is a straight pipe, but may be curved. The barrel 10 may be made of metal such as cast aluminum, or may be made of heat-resistant plastic, but in this embodiment, the nozzle 1 that can be separated by the screw engaging portion 22.
The front portion 10A of the barrel including 3 is made of metal, and the rear portion 10B is made of plastic.

The air pump 12 may be an extremely small one such as an air pump for air-lifting water to a top filter in a tropical fish tank, and in this embodiment, an air supply tube 23 extending from the air pump 12 is provided on the side surface of the cylindrical portion 15. It is connected to a certain vent hole 24 so as to supply air into the cylindrical port 15 '. Like the lead wire 21, this air supply tube 23 is inserted into the inside of the barrel from the rear end of the through hole 18, and the cylindrical port 15 '
You may make it air-supply. Also, halogen lamp 1
If 1 is of a small size of about 9 W, the radiation fin 16 can be omitted.

To work with this heating tool, the halogen lamp 11 and the air pump 12 are energized. As a result, the halogen lamp 11 spotlights a light beam from the nozzle 13 to the outside, and at the same time, the air pump 12 sends air into the hollow portion of the shaft cylinder, and the hot air flow heated by the halogen lamp 11 is ejected from the nozzle 13. As described above, since the inner diameter of the nozzle opening 13 'is various within the range of 0.8 to 2.0 mm, the nozzle having the optimum inner diameter of the nozzle opening is attached according to the size of the heating area of the work and the melting point. By selecting and using a heating tool, the tip of the nozzle 13 is brought close to the heating area of the workpiece, the heating area of the workpiece is illuminated with a light beam of a halogen lamp like a spotlight, and a hot air stream is blown to the irradiation area. Alternatively, a part or all of the heating region can be melted or softened for correction. In this case, the work is exposed to the hot air flow within the range illuminated by the halogen lamp spotlight,
The work can be precisely corrected while looking at the part illuminated by the light of the halogen lamp. When the area irradiated by the spotlight of the halogen lamp is part of the heating area of the workpiece, move the tool while making corrections so that the irradiation area of the spotlight of the halogen lamp covers the entire heating area of the workpiece. Good. Also, halogen lamp 1
Since the amount of heat generated by No. 1 is constant, the work heating temperature is optimally controlled by adjusting the distance that brings the tip of the nozzle 13 closer to the work, adjusting the amount of air blown by the air pump 12, or changing the nozzle diameter. it can.

[0009]

As is clear from the above, the barrel of the heating tool of the present invention is small and elongated, and can be handled by holding it with a pencil. Therefore, the workability is good and the work can be performed efficiently. And
Hot air is blown into the area illuminated by the halogen spotlight to heat the workpiece without contact, so the illuminated portion of the workpiece can be accurately corrected while looking at the spotlight, and at the very surface of the workpiece. It can be heated easily. Furthermore, since the tip of the tip nozzle does not contact the brazing material and the brazing material is melted by warm air, no smoke is emitted, and the melted brazing material can be gently welded to the connection part due to the surface tension. A preferable runner is formed during casting. In addition, small holes and the like on the surface of the wax can be accurately captured by halogen light, heated and melted with warm air, and the holes can be smoothly filled. Further, the temperature can be delicately and easily adjusted by changing the distance between the pen tip (the tip of the nozzle).

[Brief description of drawings]

FIG. 1 is a plan view showing a cross section of one half of an embodiment of a heating tool of the present invention with a part thereof enlarged.

[Explanation of symbols]

 10 Shaft cylinder 10 'Shaft cylinder hollow part 11 Halogen lamp 12 Air pump 13 Nozzle

Claims (1)

[Claims] 1. A halogen lamp for irradiating light from the nozzle to the outside is provided in a hollow portion of a shaft cylinder that is hollow and long and has a small diameter nozzle at the front end, and an air pump is connected to the shaft cylinder to connect the air pump to the air pump. A pen-type heating tool, characterized in that air is sent into the hollow portion and ejected from the nozzle to the outside.