JPH04501828A - Soldering equipment with spout cleaning member - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Soldering device equipped with a spout cleaning member The present invention provides a soldering device equipped with a spout cleaning member. a container for molten solder and at least one container disposed within the container; The tower has an upright tower at its top with a small It has at least one outflow groove.

Such soldering equipment is generally known.

Most of these soldering devices are used for soldering chip components. has been done. These are generally of small dimensions and are Soldering is a component fixed to a surface. For this reason, they are placed on printed circuit boards. For example, the chip components are initially positioned with glue, and then the chip components are The soldering surface is fixed to the corresponding soldering surface of the conductive path on the printed circuit board. . As a result, printed circuit boards with components are soldered by the type of solder described in the introduction. The soldering is carried through the equipment, where the soldering takes place.

In order to obtain a good quality soldering joint, the soldering equipment must have an upright tower with a narrow outflow. It is important to have grooves. In this way, the configuration elements for soldering are Narrow, powerful solder waves that can penetrate even the space between the bare surface and the printed circuit board You can get

In reality, such narrow outflow grooves are used during the soldering process with solder oxide. It gets dirty quickly due to flux. The substances produced by this pollution and oxidation are Deposits are deposited within the outflow groove, thereby blocking this groove and the resulting wave of solder being Regular and reliable soldering bonds are no longer obtained.

An object of the present invention is to provide a soldering device that prevents the above-mentioned problems from occurring. It is something that

This purpose is achieved by using a scraper member disposed within the groove so as to be movable in its longitudinal direction. more achieved.

This is because the scraper member is moved regularly within the groove, and the groove is kept clean. so that the solder waves that flow out remain regular and reliable. This is because soldering with a certain degree of bonding can provide a good bond.

The invention is further elucidated below with reference to the accompanying drawings, in which: Fig. 1 is a perspective view of a soldering device to which the present invention is applied; Fig. 2 is a perspective view of a soldering device to which the present invention is applied. Partially broken perspective view of a solder container with a solder tower with an outflow groove where light is applied FIG. 3 is a diagram corresponding to FIG. 2 in another embodiment of the present invention; FIG. 5 is a sectional view of the device according to the invention; FIG. 5 is a detailed view of the device according to the invention. 6 is a detailed perspective view of a scraper member applicable to the apparatus according to the present invention. and FIGS. 7 and 8 are diagrams showing two modified examples of the scraper member.

The soldering apparatus 1 represented in FIG. It is formed by a housing 2 that extends. Additionally, the solder shown in Figure 2 The container 4 for soldering is placed below the conveyor belt 3 in the soldering device.

The solder container 4 is equipped with a heating device to keep the solder in the solder container 4 in a liquid state. (not shown). Furthermore, the solder container 4 contains molten solder. A first outlet base 5 with an outflow groove 6 is arranged. Furthermore, a second rotor tower 7 is arranged. It is placed.

The conveyor belt 3 has a printed circuit board 8 for soldering attached to both outlet towers 5 and 7. The solder produced by these towers is arranged to be carried along The waves 9 and 10 of the elements arranged on the bottom surface of the printed circuit board 8 are connected to this printed circuit board. It is designed to be soldered to 8. This conveyor belt is further adapted to the present invention. Since this part is not included, we will not discuss it further. Each of the exit groups 5.7 is Furthermore, it is equipped with a pump (not shown) for raising the molten solder. Part-out The base is first equipped with a narrow outflow groove 6 for forming a narrow, strong solder wave 9. There is. Because of the small thickness of this solder wave, and the force, it is a table for soldering. Good penetration into the space between the surfaces results in a good solder joint. Second use The waves created by tower 7 have a gently flowing surface, and the reason The reason is that it no longer needs to penetrate into the space between the solder surfaces and the solder joint is This is because it has already been brought about by the first wave of solder.

This outflow groove is quite narrow due to oxides from the molten solder flowing out. Flush existing in the solder bath that has accumulated in the groove 6 It becomes blocked due to Kusu.

According to the invention, this contamination can be prevented by moving the scraper member 11 back and forth in the outflow groove 6 in an orderly manner. It can be removed regularly by moving the scraper member. 11 removes dirt deposits while reciprocating. This scraper member 11 is fixed to a block 13 by a holder 12. This block 13 Since it is guided on the guide rod 14, it is movable in the longitudinal direction of the groove 6. .

For this purpose, the block 13 is provided with an opening 15 through which the guide rod 14 is inserted. It is extending. driving the block 13 and therefore the scraper member 11 in the longitudinal direction; A threaded spindle 16 is arranged parallel to the guide rod 14 for this purpose. this The threaded spindle 16 has a threaded section and an opening arranged in the block 13. It extends through 17. This screw spindle 16 is driven by an electric motor 18. It is now possible. An electric motor 18 as well as a guide rod 14 and a screw spindle 16 is attached to a bracket 19 fixed to the container 4.

Once some welding work is done, therefore some printed circuit boards 8, when energy is supplied to the electric motor 18, the threaded spindle 16 is driven, the block 13 moves along the guide rod 14, and the scraper member 11 performs a linear reciprocating motion through the outflow groove 6. The soldering process continues It will be opened.

If a large number of soldering operations are performed again, this scraper operation will be repeated. .

3 except that a second guide rod 20 is arranged in place of the threaded spindle 16. 3 shows another embodiment of a screen member similar to the embodiment shown in FIG. 2; this For this purpose, a second guide opening 21 is provided in the block 13. scraper member A linear drive member 22 is arranged for the drive of 11, and this For example, it can be formed by a pneumatically or hydraulically driven cylinder or by a linear electric motor. I can do it.

However, if the drive member of the scraper member is moved some distance from the solder bath 4, It is also possible to place a It is attractive with respect to the risk of contamination by water and solder. And Bodenke A bowden cable is connected between the linear drive section and the block 13. Fig. 4 is a cross-sectional view of the first solder column, which is used for the bonding of the present invention. Such a scraper member 11 is used. This shows many structural details There is.

The detailed perspective view shown in FIG. 5 shows the structure of the scraper member in more detail. . Here, the groove 6 also has wide parts 23 on both sides where the dirt scraped off collects. It is also shown that Solder oxide and flux collected in this wide area The wax is removed by a wave of solder flowing from the groove. If necessary, this The wide section may also be cleaned manually at regular intervals, for example daily.

Although the wide portion in the figure is rectangular, it may have another shape, for example, a circle.

Finally, FIGS. 6 and 7 show two alternative embodiments of the scraper member. No. In the embodiment shown in Figure 6, two parallel blades 24 are used. , they are both rivets, or pop rivets. 25 on the holder 12. In the embodiment shown in FIG. One blade 6 extending obliquely into the blade 6 is provided.

Claims (10)

[Claims] 1. A container for molten solder is placed in the container above, and forms a wave of solder on the top. at least one upright tower with at least one outflow gutter for In the soldering equipment, a scraper is installed in the groove so as to be movable in the longitudinal direction. A soldering device characterized in that a soldering member is arranged. 2. The scraper member is movable along a path parallel to the groove and is linear. 2. The drive member according to claim 1, wherein the drive member is fixed to an object coupled to the drive member. Soldering equipment. 3. The path is formed by a rod parallel to the groove, and the object is inserted into the groove. an opening formed by a block with an opening and disposed within said block; a rotatable, drivable screw spindle extending through the section and having a corresponding threaded section; Soldering according to claim 2, characterized in that the rod is arranged parallel to the rod. equipment. 4. a Bowden cable is positioned between the object and the linear drive member; 3. The soldering device according to claim 2, further comprising a soldering device. 5. characterized in that the connection between the scraper member and the block is elastic; A soldering device according to any one of claims 1 to 4. 6. The scraper member is substantially elongated and comprises an elastic member extending obliquely into the groove. formed by an elongated plate, each end of said plate substantially extending into said groove. any of claims 1 to 5, characterized in that it is substantially parallel to the relevant sides; Soldering equipment described in any of the above. 7. The scraper member has two plates extending into the groove parallel to the side walls of the groove. According to any one of claims 1 to 6, the Soldering equipment included. 8. Claim characterized in that said groove is provided with a wide portion on at least one side thereof. A soldering device according to any one of claims 1 to 7. 9. 9. The groove according to claim 8, wherein the groove is provided with wide portions on both sides thereof. Soldering equipment. 10. Control of the above drive member is achieved by soldering a predetermined number of printed circuit boards. The scraper member is characterized in that the scraper member performs a reciprocating operation after The soldering device according to any one of claims 1 to 9.