JPH0448640Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is applicable to processing of electronic components, such as soldering the lead pins of flat package ICs to the leads of printed circuit boards, and of plastics, such as bending, cutting, and coating of resin. The present invention relates to a heat source lamp mounting mechanism that is suitable as a heat source for wire-related processing such as wire coating, glass-related processing such as reed switch sealing, and metal-related processing such as metal distortion removal.

[Conventional technology]

For example, an SOP with lead pins in two directions
(Sma11 Outline Package) or FPP (Flat Plastic Package) with lead pins in 4 directions
In flat package ICs such as these, the spacing between lead pins tends to become smaller and smaller as LSIs become more multifunctional.

Processing devices for soldering this type of flat package IC to a printed circuit board include, for example, a soldering iron heating method, a pulse heater heating method, and recently a method using a laser beam.

However, these processing methods have several problems. As the number of lead pins in a flat package IC increases, problems with shorting between the pins due to excess solder occur, which requires precise control of work conditions, including advanced solder paste printing technology and board mounting technology.

Recently, in order to reduce costs, there is a tendency for substrates to be molded from materials with extremely low heat resistance, such as paper phenolic resin. , hot air method, and laser method are unsuitable because they cause thermal damage.

In particular, in the case of the laser method, there is no change in the heat input head over time (for example, oxide film formation) compared to a heat input method using heat conduction such as a soldering iron. However, since the laser beam is guided to the output optical section using a flexible fiber and the output optical section is operated by a robot to focus the laser beam on the part to be soldered to perform soldering, the equipment becomes large and requires less space. is restricted.

The present inventors proposed a device that uses a new heat beam instead of a heat input method like a soldering iron, and instead of a powerful laser beam in a large device like a laser method. For example, patent application No. 59-262691
No. 60-33348, No. 60-157056, Jitsugan No. 60
-66863 is mentioned.

These devices instantly solder the processed portion by irradiating the heat beam emitted from the lamp tube according to the length and width of the portion to be soldered. The heat source lamp used in this device has flat parts formed at both longitudinal ends of the lamp tube, electrode plates embedded in these flat parts, and one end of these electrode plates sealed inside the lamp tube. Both ends of the filament are then connected. Further, conductors extending to the outside are connected to the other ends of the electrode plates, and thin lead wires are fixed to these conductors, respectively, and the fixed portions are insulated and reinforced with ceramics.

Therefore, in order to connect the heat source lamp to the power supply side,
A lamp tube is installed inside the U-shaped reflective mirror surface of the heat source body, and the lead wire from the lamp tube is led out of the reflective mirror surface, matched with the lead wire from the power supply side, and soldered to the welded part. Insulate and reinforce with ceramics.

[Problem to be solved by the invention] The above heat source lamp has a lamp tube arranged inside the reflecting mirror surface, and when connecting to the power supply side, for example, the lamp tube may be misaligned, causing the lamp to be out of center with respect to the reflecting mirror surface. cannot be done easily. In addition, the fixed part of the lead wire fixed to the conductor must be insulated and reinforced with ceramics, the lead wires must be matched and soldered to connect to the power supply side, and the welded part must be insulated and reinforced with ceramics. , the connection work becomes complicated and the number of parts increases, resulting in high costs. Furthermore, since the lead wire has a small diameter, it is often broken during connection work, making soldering work particularly troublesome in a narrow space.

This invention simply attaches the lamp tube inside the reflecting mirror surface and removably connects the connector of the lamp tube to the connector on the power supply side. To provide a heat source lamp mounting mechanism that can automatically center the heat source lamp and provide a constant line-shaped heat beam at all times.

[Means to solve the problem]

According to the device of the present invention for achieving the above object, a lamp tube having a filament that emits a line-shaped heat beam is provided with a flat portion at both ends in the longitudinal direction, an electrode plate is embedded in the flat portion, and an electrode plate is embedded in the flat portion. Both ends of the filament are connected to one end of the electrode plate, and a conductor is connected to the other end, and the conductor is led out from the flat part, the electrode plate of the conductor. A plate-shaped connector that is connected horizontally so that it has the same planar arrangement and has a screw hole for mounting on the free end side, and a screw hole that matches the screw hole of this connector and is fastened with a screw. an L-shaped connector with an The present invention provides a heat source lamp mounting mechanism characterized by comprising a screw for fixing the heat source lamp.

Embodiments of the present invention shown in the drawings will be described in detail below.

〔Example〕

In FIGS. 1 and 2, reference numeral 1 denotes a heat source lamp unit, which includes a pair of heat source bodies 2 and 3 as shown in FIG. 3a. Heat source body 2,
3 includes matching surfaces that match each other and reflecting surfaces 5 and 6 that are continuous with the matching surfaces. Recesses 2a, 3a are provided on the mating surfaces of the heat source bodies 2, 3 facing each other.
are provided for each. These recesses 2a, 3
A cavity is formed by the heat source bodies 2 and 3 being matched at their mating surfaces. This cavity is connected by a pipe to a source of high pressure fluid, such as compressed air or nitrogen gas. The high-pressure fluid sent into the cavity is blown into a U-shaped reflective mirror surface 7 formed by reflective surfaces 5 and 6 through a slit 4 formed in the mating surface. The entire surface of the reflecting mirror surface 7 is coated with gold plating to a uniform thickness, thereby increasing the reflection efficiency of the heat beam. Cooling channels 8 and 9 are provided in the heat source bodies 2 and 3 along the longitudinal direction. One end of the cooling channels 8 and 9 (the left end in Fig. 2) is connected to the pipe 1.
2, the cooling water injected from the injection pipe 10 passes through the cooling water channel 8, enters the cooling water channel 9 from the pipe 12, is led out from the discharge pipe 11, and is circulated.

Reflective side plates 13 and 14 are detachably attached to both ends of the heat source bodies 2 and 3 in the longitudinal direction with screws. The reflective surfaces of the reflective side plates 13 and 14 are coated with gold plating to a uniform thickness over the entire surface as described above. The reflective side plate 13 is shown in perspective view in FIG. 3b. The reflective side plate 13 is a vertical piece 15
and a horizontal piece 16. At the upper edge of the vertical piece 15, a pair of mounting pieces 17, 17 are attached to the horizontal piece 16.
It is bent and formed on itself so as to face each other. These mounting pieces 17, 17 have screw holes 1
8 and 18 are provided. Also, mounting pieces 19, 19 are provided in the lower part of the vertical piece 15 so as to face each other, and these mounting pieces 19, 19 are also provided with screw holes 20, 20. 21 is a screw hole for attaching the reflective side plate 13 to the heat source body, and a lamp tube insertion hole 23 is formed in the center of the vertical piece 15. The lamp tube insertion hole 23 has a circular central portion, and a horizontally extending cut groove is provided in the diametrical direction of the lamp tube insertion hole 23 .

The cover 25 shown in FIG. 3c has a top plate 26 and side plates 27, 27 facing each other. The top plate 26 is provided with screw holes 28, mounting holes 29, and slits 30, 30 at predetermined positions. Screw holes 3 are provided in the corners of the free end sides of the side plates 27, 27.
1, 31 and 32, 32 are formed, respectively. The cover 25 is mounted on the reflective side plate 13, the screw holes 18, 18 are aligned with the screw holes 28, 28, respectively, and the screws are screwed in to attach the cover 25.
Further, the screw holes 20, 20 of the mounting pieces 19, 19 are matched with the screw holes 31, 31 of the side plates 27, 27, respectively, and the screw holes 20, 20 of the mounting pieces 19, 19 are fitted by screwing them in the same manner as described above.

The cover plate 33 shown in FIG. 3d has a web 34 and a flange 35. Convex pieces 36, 36 are provided on the upper end surface of the web 34. These convex pieces 3
6, 36 are slits 30 provided in the top plate 26;
30 is inserted. Webb 34 and flange 35
Screw holes 37 are provided at intersections with each other, facing each other. These screw holes 37 are connected to the side plate 2 mentioned above.
They are matched with screw holes 32 and 32 provided in holes 7 and 27, respectively, and are removably attached by screwing in the screws. A slit 38 is provided on the free end side of the web 34 and the flange 35, through which outside air is taken in and exhausted to cool the connection between the lamp side and the power source side.

Insulating materials 39, 39 made of ceramics are fitted into the centrally located mounting hole 29 provided in the top plate 26, and the insulating materials 39, 39 are inserted by screwing screws 40, 40 into the other mounting holes 29, 29. Top plate 26
Fixed. Lead wires 41, 41 connected to the power supply side are arranged inside the insulating materials 39, 39, and their inner ends are connected to connecting rods 42, 42.
These connecting rods 42, 42 are connected to the insulating material 3 mentioned above.
9, 39 with screws 44, 44 to connect plates 43, 43 which are removably attached. These connecting plates 43, 43 are L-shaped connectors 45,
A screw hole 45a provided at one end of the screw 44, 4
4, it can be detachably attached. connector 4
Screw holes 45b, 45b provided at the other ends of 5, 45 and screw holes 46a, 46a provided in connectors 46, 46
are aligned with each other and removably attached using screws 47, 47. The connectors 46, 46 have conductors 51, 51 on the opposite side from the screw holes 46a, 46a.
is fixed to.

As shown in FIG. 6, the details of the heat source lamp 48 include a lamp tube 49, and both ends of the lamp tube 49 in the longitudinal direction are formed into flat parts 50, 50. Electrode plates 52, 52 are embedded in the flat parts 50, 50, and one end side of these electrode plates 52, 52 is connected to both ends of a filament 53 disposed in the lamp tube 49, respectively. The other ends of the electrode plates 52, 52 are connected to one ends of the conductors 51, 51, and the other ends are led out from the flat parts 50, 50. Plate-shaped conductors 46, 46 are fixed horizontally to the other ends of these. Therefore, filament 53 - electrode plate 52, 52 - conductor 51, 51 - conductor 46, 4
6 are set in a straight line, and the center of the heat source lamp is determined in advance.

Mask elements 54, 54 are arranged on the horizontal portions 16 of the reflective side plates 13, 14 so that the spacing between them can be adjusted. mask element 5
4 and 54 are of the same construction, one of which, mask element 54, is shown in detail in FIG. The mask element 54 includes a flat mask portion 55, and rectangular vertical pieces 56, 56 are integrally provided at both ends of the mask portion 55 in the longitudinal direction. Vertical pieces 57 and 58 are integrally provided at both ends of the mask portion 55 in the width direction along its longitudinal direction. A window 59 is opened in the vertical piece 58.
The vertical piece 58 is bent outward at a right angle from a portion slightly above the window 59 to form a horizontal piece 60. The upper end surfaces of the horizontal piece 60 and the vertical pieces 56, 56 and 57 are formed at the same height and are attached closely to the horizontal part 16 of the reflective side plate 13. Horizontal piece 6
Adjustment holes 61, 61 are formed at both ends of the lengthwise direction. These adjustment holes 61, 61 are connected to screws 6
2, 62 are adjustably attached to the horizontal portion 16, and the distance between the mask elements 54, 54 facing each other can be arbitrarily adjusted. A protection plate 63 is arranged between the reflective aperture surface and the mask elements 54, 54. The protective plate 63 is heat resistant,
Examples of light-transmitting materials include quartz glass and Pyrex (trade name). The dimension of the mask width L is determined by the adjustment holes 6 of the mask elements 54, 54.
By changing the mounting position of 1 and 61,
Can be adjusted freely.

The mask elements 54, 54 cut off unnecessary heat beams reflected by the reflecting mirror surface 7. Therefore, the heat beam passing between the mask elements 54 has a high temperature and its outline becomes clear. The heat beam cut by the mask elements 54, 54 passes through the window 59 and the vertical piece 5.
It is discharged to the outside of the mask elements 54, 54 from the gap between 7, 58 and 56, 56.

In order to insert and hold the heat source lamp 48 into the insertion holes 23, 23 of the reflective side plates 13, 14, the lid plates 33, 3 are inserted.
3 from the covers 25, 25, and then remove the cover 2.
5 and 25 are left completely open. Therefore, the lamp tube 4 shown in FIG.
9 into the insertion hole 23, and then insert the reflective side plates 13, 14.
hold in between. The connectors 46, 46 are then positioned horizontally within the covers 25, 25. Therefore, the screw holes 46a, 46a of the connectors 46, 46 are aligned with the screw holes 45b, 45b of the connectors 45, 45, respectively, and the screw holes 45a, 45a of the connectors 45, 45 are attached removably with the screws 47, 47, respectively. Attach screw 4 to the connecting plates 43, 43.
4 and 44 are each removably attached. In this case, when the heat source lamp 48 is inserted into the insertion holes 23, 23 of the reflective side plates 13, 14, its center is automatically brought out, so the center of the heat source lamp can be aligned with the reflective mirror surface with a single touch, and the connector Matching the screw holes of the connectors 45, 45 with the screw holes of the connectors 45 and 45 can be done with one touch; it is a simple task of simply screwing the screws into these holes. Therefore, the cover plates 33, 33 are attached to the covers 25, 25, and screws are screwed into the screw holes 37, 37 to attach them.

[Effect of idea]

Electrode plates are embedded in the flat parts of both longitudinal ends of the lamp tube, one end of the electrode plates is connected to both ends of the filament sealed in the lamp tube, and the other end is connected to the outside from the flat part. Conductors protruding from the conductors are connected to the conductors, and flat connectors each having a screw hole at the outer end are connected to these conductors in a horizontal state. Therefore, the centers of the filament, electrode plate, conductor, and connector are set in a straight line, so the heat source lamp is placed inside the reflective mirror surface, and the screw hole of the connector is inserted into the screw hole of the connection plate connected to the power supply side. The holes are aligned and screwed together, so no special centering work is required, and the heat source lamp can be automatically centered with respect to the reflecting mirror surface. In addition, since the connection between the heat source lamp side and the power source side is removable with screws, the connection work is easy, and there is no need to insulate and reinforce the connection with expensive ceramics, so the heat source lamp can be replaced. Alternatively, the work can be easily carried out during inspections and the like. Furthermore, since the heat source lamp is directly connected to the power supply side through the connector, there is no need to provide a socket or the like, and the structure is simplified.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention.
The figure is a longitudinal sectional view of the heat source lamp unit, Figure 2 is its plan view, Figure 3 a is an exploded slope view of the heat source body,
b, c, and d are respectively oblique views of the reflective side plate, cover, and lid, Fig. 4 is an oblique view of the mask element, Fig. 5 is a bottom view of a portion of Fig. 1, and Fig. 6 is an oblique view of the heat source lamp. It is an exploded perspective view. Explanation of symbols, 45... Connector, 45b... Screw hole, 46a... Connector, 46... Screw hole, 47
... Screw, 49 ... Lamp tube, 50 ... Flat part, 51 ... Conductor, 52 ... Electrode plate, 53 ...
Filament.

Claims (1)

[Scope of utility model registration request] Flat parts 50, 50 are provided at both longitudinal ends of the lamp tube 49, which has a filament 53 that emits a line-shaped heat beam.
0, the electrode plates 52, 52 are embedded in the electrode plates 52, 52,
Both ends of the filament 53 are connected to one end of the filament 52, and conductors 51, 5 are connected to the other end.
1 and the conductors 51, 51 are led out from the flat parts 50, 50, the electrode plates 52 of the conductors 51, 51,
52, and screw holes 46a, 46 for mounting are connected in a horizontal state so as to have the same planar arrangement as 52, and screw holes 46a, 46 for mounting are provided on the free end side.
plate-shaped connectors 46, 46 provided with a screw hole 45 that matches the screw holes 46a, 46a of the connectors 46, 46 and fastens with screws 47, 47;
L-shaped connector 4 with b and 45b on one end
5, 45, and a connecting plate 4 connected to the power supply side, which has screw holes that match the screw holes 45a, 45a provided on the other end side of the L-shaped connectors 45, 45.
3, 43, and screws 44, 44 for screwing these screw holes.