JPS5952215B2 - Metal wire plating and annealing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a plating and annealing apparatus for metal wire bodies.

Conventionally, as shown in FIG. 1, as a facility for annealing a metal wire such as a copper wire while also plating it, a metal wire w sent out from a delivery device 101 for the metal wire w is used.
is first passed through a cleaning tank 102 to remove oil and dirt adhering to its surface, and then the cleaned metal wire w is passed through a plating/annealing tank containing a molten plating solution such as molten solder. It is known that the metal filament w is guided into a tank 103, where the metal filament w is plated and at the same time annealed. However, in this case, the effect of annealing on the filament w is due to 103, the filament w is greatly affected by the amount of heat given by the molten plating solution, so to obtain an appropriate annealing effect, the specific heat of the metal material or the difference in the wire diameter of the filament is important. It is necessary to change the residence time of the filament w in the molten plating solution according to the change in the wire diameter, and therefore it is necessary to change the take-up speed of the take-off device 104 each time the material or wire diameter changes. It is also necessary to adjust and set the running speed of the strip w to bring about a suitable result for the plating work, so the linear speed of the strip w is severely limited, making it difficult to perform the plating and annealing work efficiently. There was a drawback that I couldn't do it.

The object of the present invention is to provide a plating/annealing device capable of solving the above-mentioned conventional problems, and the basic configuration of an embodiment thereof will be explained with reference to FIGS. 2 and 3. do.

In both figures, reference numeral 1 denotes a hollow prismatic metal melting tank, in which is disposed a liquid level adjustment block 2 which also has a prismatic shape and can be moved in and out in the vertical direction. In the embodiment shown, the side surface of the liquid level adjustment block 2 in one direction is made of metal (the melting tank 1
The relationship between the metal melting tank 1 and the liquid level adjustment block 2 is such that the melt plating liquid 9 is in contact with and guided by the inner wall surface of the metal melting tank 1. The volume of the metal melting tank 1 is set such that there is enough room to accommodate the metal melting tank 1, and the liquid level adjustment block 2 can raise and lower the liquid level of the molten plating liquid 9 sufficiently effectively when moving l into and out of the metal melting tank 1. It would be good if it could be held in the opposite direction. Therefore, the shape is not limited to a prismatic shape, and different shapes may be combined, for example, a hollow cylindrical metal melting tank and a prismatic liquid level adjustment knob. A guide roller 3 for guiding the metal wire w is attached to the lower part of the liquid level adjustment block 2, and a threaded rod 5 extending in the vertical direction is fixedly attached to the upper surface of the guide roller 3.

This threaded rod 5 is screwed into a feed screw 7 which is rotatably attached to an external fixed bracket 6, and is moved forward and backward in the vertical direction by rotation of the feed screw 7 from side to side. Note that the bevel gear 7 is integrally formed with the feed screw 7.
The feed screw 7 is rotated by the bevel gear 8 that meshes with the bevel gear a. Note that this mechanism is merely an example of a mechanism for raising and lowering the liquid level adjustment block 2, and any other mechanical or electrical mechanism such as a fluid pressure cylinder, rack and pinion, etc., may be used. Of course. The molten plating liquid 9, such as molten solder, is then contained in the metal melting tank 1 and heated by a heating device 17, such as a gas flame, to maintain its molten state.

Reference numeral 10 indicates the liquid level of the molten plating liquid, and a floating die 15 is provided at the liquid level at a position where each of the metal filaments W emerges from the plating liquid to the outside. This serves to scrape off excess molten plating metal adhering to the filament w.

FIG. 4 shows the second and third embodiments of the present invention.

First, in the second embodiment, the upper opening surface of the metal melting tank 1 is covered with a sealing lid 12, and the space above the liquid level 10 of the molten plating liquid 9 in the metal melting tank 1 is filled with a gas such as argon or carbon dioxide. It is filled with an atmosphere of inert gas 4.
An airtight inlet 18 is formed in the airtight lid 12 so as not to impede the vertical movement of the liquid level adjustment block 2, and an inert gas inlet 18 is formed in the airtight lid 12 so that the inert gas is not impeded when the inert gas introduction pipe 13 and the metal wire body w travel. An airtight die 14 is installed to prevent leakage. This inert gas 4 is of course intended to prevent oxidation of the molten plating solution. Further, the third embodiment is provided with a liquid level detection device 16 for detecting the position of the liquid level 10 of the molten plating liquid 9.

The illustrated liquid level detection device 16 is a transparent hollow tube with a small inner diameter and a scale that communicates with the bottom of the metal melting tank 1.
A buoy floating above 0 may also be used. Next, the functions and effects of this invention will be explained.

First, the immersion time in the plating solution is determined so as to provide the necessary amount of annealing heat in accordance with the annealing characteristics and wire diameter of the metal wire w to be plated and annealed. Therefore, the immersion running length is such that the immersion time can be secured while the running speed of the metal filament W is maintained at a sufficiently high value, that is, the filament W travels while immersed in the molten plating liquid 9. The length is determined, and the liquid level adjustment block 2 is moved up and down into and out of the metal melting tank 1 so that this value is obtained. For example, if the liquid level adjustment block 2 is lowered, the liquid level of the molten plating liquid 9]
0 rises and the position of the guide roller 3 falls, so naturally the immersed running length increases, and in the opposite case, the immersed running length decreases. Therefore,
According to this invention, by moving the liquid level adjustment hook 2 up and down, the immersion running length of the metal wire w to be processed can be arbitrarily and easily adjusted. The wire speed is adjusted according to the material and wire diameter of the body, in other words, the effect of performing sufficient plating and annealing work without reducing the efficiency of the annealing work is achieved, and the gap between the i1 metal melting tank 1 and the liquid level adjustment block 2 is reduced. 11 can be narrowed as much as possible within a range that does not impede the vertical movement of the floating die 15 and the passage of the filament JW, and as a result, the exposed surface area of the molten plating liquid can be minimized, so that the plating liquid can be The heating device 17 helps prevent oxidation and reduces heat dissipation.
This has the effect of sufficiently saving heat energy consumed in other processes. Furthermore, according to the second embodiment, in addition to the above basic effects, the atmosphere of the inert gas 4 provides
The contact between the molten plating liquid 9 and the air is blocked, thereby reliably preventing the oxidation phenomenon at the surface of the molten plating liquid 9 on which the floating die 15 is floating. As a result, the molten plating liquid can be reliably plated onto the metal filament w without the possibility of oxidation, and the product quality can be improved.

According to the eighth embodiment, in addition to the basic effects I and ii above, the level of the molten plating liquid can be accurately and immediately determined by the Iv liquid level detection device.
From this and the relative position of the liquid level adjustment block 2 with respect to the metal melting tank 1, it is possible to accurately know the immersion travel length of the metal filament w in the plating liquid. The vertical position of the liquid level adjustment block 2 serves as a gauge to check the vertical position of the liquid level adjustment block 2, and is used to obtain the best annealing result for the metal wire w depending on the material and wire diameter. This has the effect of allowing easy and accurate detection and setting.

[Brief explanation of the drawing]

FIG. 1 is a simplified side view explaining the prior art, FIG. 2 is a sectional side view showing a basic embodiment of the present invention, and FIG. 3 is a sectional view taken along the line 111-111 in FIG. , and FIG. 4 are simplified side sectional views similar to FIG. 2 showing second and third embodiments of the invention.

Claims (1)

[Scope of Claims] 1. A metal melting tank containing a molten plating solution, a guide roller for guiding a metal wire running in the metal melting tank, and configured to be able to move in and out of the metal melting tank. A plating/annealing device for a metal wire body, characterized in that it has a liquid level adjustment block. 2. A metal melting tank that accommodates a molten plating solution, and a liquid level adjustment block that has a guide roller that guides a metal linear body running in the metal melting tank and is configured to be able to move in and out of the metal melting tank. A plating and annealing apparatus for a metal filament having the above, wherein a gap above the liquid level of the molten plating liquid in the metal melting tank is filled with an inert gas. Combined annealing equipment. 3. A metal melting tank that accommodates a molten plating solution, and a liquid level adjustment block that has a guide roller that guides a metal linear body running in the metal melting tank and is configured to be able to move in and out of the metal melting tank. An apparatus for plating and annealing metal filaments, characterized in that the apparatus is equipped with a liquid level detection device for checking the liquid level of the molten plating liquid.