JPH01124985A - Lamp termal source device - Google Patents

Abstract

PURPOSE:To reduce a reflection mirror width as possibly as so as to reduce the size as wells as weight of a device by providing a lamp accommodation member formed at the top member of the mirror, a first reflection face on the inside of the accommodation member, and a second reflection face formed continuously at the opening edge of the first reflection face. CONSTITUTION:A lamp 17 is housed in a lamp accommodation member 13 formed at the top of a reflection mirror 12. A beam from the lamp 17 is reflected against first reflection faces 14, 15 and turned to be long beam, and then focusing is set on a workpiece, and further a beam reflected against a second reflection face 16 is focused on the workpiece. It is thus possible to remarkably reduce the mirror width of the reflection mirror as well as to elongate the beam length from the mirror opening face. It is, therefore, possible to reduce the size and weight of a thermal power source device so as to generate no trouble in operation as the incorporation is easily done and it is light in weight in the case that it is set in a small space in an automatic welding machine.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention provides a heat source for soldering, for example, a two-way leaded flat package IC (SOP) and a four-way leaded flat package IC (QFP) to a printed circuit board. The present invention relates to a lamp heat source device suitable for use as a lamp heat source device.

[Conventional technology]

For example, various methods have been proposed for the heat source when soldering two-way leaded flat package IC (SOP) and four-way leaded flat package IC (QFP) (hereinafter referred to as flat package IC) to a printed circuit board. has been done. For example, soldering iron heating method, pulse heater heating method, infrared heating reflow method, hot air method (Electronic materials P37, February 1985 issue), or recently, a method using laser beam [light metal welding Vof,
17 (1979) No. 1) was known.

In addition, the present applicant has proposed heat source systems completely different from those described above, such as JP-A No. 61-140368 and Utility Model Application No. 61-1.
As shown in Japanese Utility Model Application No. 52381 and Japanese Utility Model Application No. 61-185566, heat source devices using halogen lamps capable of high output were proposed.

As shown in FIG. 1, this heat source device 1 includes a reflecting mirror 4 whose inner surface is formed into a concave reflecting surface 3.3 by aligning a pair of mirror bodies 2.2 with each other, and the reflecting surface 3.3. 3.3 and a lamp 5 located at the top of the center of the lamp. Therefore, the beam from the lamp 5 is reflected by the reflecting surface 3.3 and focused on the part to be processed, thereby performing the desired processing.

[Problem that the invention seeks to solve]

However, if you want to increase the focal length from the mirror aperture 6 (mirror width) to the focal point 7 of the workpiece using the heat source device as described above, if the lamp 5 is arranged as shown in Fig. 1, the reflection In order to focus the reflected beam 8.8 on the focal point 7, the width of the mirror aperture 6 must be designed to be large as shown in FIG.

As described above, if the reflected beam from the mirror aperture surface 6 is required to have a long focal length due to the processing conditions, the mirror width of the reflecting mirror must be designed to be large, which increases the size and weight of the heat source device. If the equipment becomes larger and heavier, such as an automatic welding machine that must be installed in a small space, various problems may arise, such as the inability to incorporate it, or the equipment being heavy and causing problems in operation. be. Furthermore, for example, when the total length of the processed part of a flat package IC is extremely small (lead pitch spacing is 6 mm, for example), in the case of the above-mentioned reflective mirror, the width of the mirror is too large, causing unnecessary parts to be There was a problem that the reflected beam was irradiated, which had an adverse thermal effect on the part to be processed.

The inventors of the present invention have conducted various studies to reduce the size and weight of heat source devices that use halogen lamps, and as a result, the installation position of the halogen lamp has been improved by providing a lamp accommodating portion on the top of the reflecting mirror. By arranging the mirror in a completely different way from conventional ones, we have made the mirror width of the reflecting mirror as narrow as possible, making the device smaller and lighter.
Moreover, they succeeded in developing a device that allows the reflected beam to have a long focal length.

An object of the present invention is to provide a lamp accommodating portion at the top of the reflecting mirror, thereby arranging the halogen lamp in a completely different position from that of the conventional one. To provide a heat source device in which the mirror width of the reflecting mirror is made as narrow as possible, the device is made smaller and lighter, and the focal length of the reflected beam can be made longer.

[Means for solving problems]

A lamp accommodating part is provided on the top of the reflecting mirror, a lamp is built into this lamp accommodating part, and the inner surface of the lamp accommodating part is a first reflecting surface, and the part other than this first reflecting surface is a second reflecting surface. Form as a surface. That is, according to the present invention, the lamp accommodating portion formed at the top of the reflecting mirror;
a first reflective surface formed on the inner surface of the lamp accommodating portion; a second reflective surface formed continuously on the opening edge of the first reflective surface;
The present invention provides a lamp heat source device characterized by comprising a lamp accommodated in the above-mentioned lamp accommodating section.

[Effect]

A lamp is accommodated in a lamp accommodating portion formed on the top of the reflecting mirror. The beam from the lamp is reflected by the first reflective surface into a long beam that is focused onto the workpiece, and in addition, the beam reflected by the second reflection surface is also focused onto the workpiece. The focus is brought into alignment. Therefore, the mirror width of the reflecting mirror can be made extremely narrow, and the beam length from the mirror aperture can be made long.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

First, the principle of the heat source device of the present invention will be explained with reference to FIG.

A heat source device according to the invention is indicated generally by the reference numeral 10. The heat source device 10 includes a pair of mirror bodies 1). 1) are aligned with each other to form the reflecting mirror 12. A lamp accommodating portion 13 is formed at the top of the reflecting mirror 12. The lamp housing 13 is formed in the first reflective surfaces 14, 14 and 15. The second reflective surface 16 is continuous to the opening edge of the first reflective surface.
．． 16 is formed. A line-type halogen lamp 17 capable of high output is housed in the lamp housing section 13 . By doing so, the reflected beams 19 and 20 from the lamp 17 can be made to coincide with the focal point 18 of the workpiece. In principle, in order to place a lamp in the same position as in the present invention and to obtain the reflected beam of the lamp at the focal point 18 using the conventional heat source device shown in FIG. As shown by the dashed line in FIG. 2, it is clear that the mirror width must be designed to be considerably larger than the mirror width of the present invention.

In the reflective mirror of the present invention, a heat source device is constructed as a unit as shown in FIGS. 3 and 4. When configured as a unit, the entire heat source device 10 is covered by a case 21, and the heat source device 10 is fixed to a holder 22, as shown in FIG. The heat source device 10 is a water supply pipe 2
Cooling water supplied from 3 is connected to the pair of mirror bodies 1) through a connecting pipe 24. 1) Circulate inside the heat source device 10
It is designed to cool the entire area. The holder 22 is provided with a hanger 25, and the hanger 25 is detachably attached to an appropriate fixing member. In FIG. 4, reference numerals 26 and 26 indicate connection terminals to the power source. The connection terminals 26.26 are removably connected to connection conductors 28.28 provided at both ends of the lamp 17 by means of connection plates 27.27 and screws 29.29. 30 is a protection plate made of a glass plate, and is detachably attached to the opening surface 31 of the reflection mirror IO.

The beam from the lamp 17 thus consists of a primary reflected beam 19 and a secondary reflected beam 20, and these reflected beams 19, 20 are focused on the focal point 18. Of course, this beam is formed in a line shape. The first reflective surfaces 14, 14 and 15 and the twenty-third reflective surface 16.
16 is plated with gold on its entire surface to increase beam reflection efficiency.

The halogen lamp 17 is housed in the lamp housing section 13 described above. As is clear from FIG. 1, the upper half of the lamp 17 is located within the first reflective surface, and the lower half thereof is located within the second reflective surface, with the horizontal axis 32 of the lamp 17 as the center. It is forced to protrude inward. Therefore, the beam from the lamp 17 is formed into a primary reflected beam 19 shown by a solid line in FIGS. 2 and 3 and a secondary reflected beam 20 shown by a dashed line. The first reflected beam 19 is formed by the first reflective surfaces 14.14 and 15. Also, the secondary reflected beam 20 is formed by the second reflective surface 16.16. The thus reflected primary reflected beam 19 and secondary reflected beam 20 are brought into alignment with the focus of the workpiece to be processed.

〔Effect of the invention〕

A lamp is accommodated in a lamp accommodating portion formed on the top of the reflecting mirror, and a beam from the lamp is reflected by a first reflecting surface to be focused on the workpiece as a first reflected beam, and a second reflected beam is focused on the workpiece. The secondary reflected beam reflected by the reflective surface is also focused on the workpiece. therefore,
The mirror width of the reflecting mirror can be made extremely narrow, and the length of the reflected beam from the mirror aperture can be made long. Therefore, even if the reflected beam from the mirror aperture is required to have a long focal length due to processing conditions, the mirror width of the reflecting mirror can be made small.

Therefore, the heat source device can be made smaller and lighter, so when it has to be installed in a small space, for example in an automatic welding machine, it can be easily installed and the light weight makes it easy to operate. There is no risk of any trouble.

[Brief explanation of the drawing]

Fig. 1 is a partial cross-sectional explanatory diagram of a conventional heat source device, Fig. 2 is a principle diagram for explaining a comparison between the heat source device of the present invention and a conventional heat source device, and Fig. 3 is a cross-sectional view of the main parts of the heat source device. FIG. 4 is a front view with the left half cut away. Explanation of symbols 10...Heat source device 1)...Mirror body 1-2...Reflection mirror 13...Lamp accommodating portion 14.15...First reflection surface 16...Second reflection surface 17 ... Lamp 31 ... Opening surface of the first reflecting surface (Fig. 1, Fig. 2)

Claims (4)

[Claims] (1) A lamp accommodating portion formed at the top of the reflecting mirror;
The lamp housing includes a first reflective surface formed on the entire inner surface of the lamp housing section, a second reflective surface formed continuously on the opening surface of the first reflective surface, and a lamp accommodated in the lamp housing section. A lamp heat source device characterized by: (2) The lamp heat source according to claim 1, wherein the first reflecting surface is composed of vertical reflecting surfaces facing each other and a reflecting surface located between these surfaces and having a curved inner surface. Device. (3) The lamp device according to claim 1, wherein the second reflecting surface is a curved reflecting surface formed on the inner surface of a pair of reflecting mirror bodies. (4) The lamp housed in the lamp accommodating section has an upper half disposed within the first reflective surface and a lower half disposed within the second reflective surface with the horizontal center line as the boundary. The lamp device according to item 1.