JPH0259877B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for plating a strip-shaped plated object.

For plating processing, a wide variety of processing methods have been proposed and put into practice.
As shown in the figure, when plating a rectangular plated object 1 such as an IC lead frame (hereinafter simply referred to as the "plated object") with an injection plating device 2, a large number of sheets are placed on the pass line to improve efficiency. The plating material 1 is brought into contact with the processing liquid in the processing tank 3 while being transported in parallel, and subjected to the intended pre-treatment and post-treatment in the pre-treatment zone A and the post-treatment zone B, respectively, and the injection plating device in the plating zone C. A method has been proposed in which a large number of sheets are plated at the same time (not shown). In such a plating method, a plurality of horizontal rolls 4 are usually arranged along a pass line, and a plurality of sheets of plating material 1 are passed in parallel over the horizontal rolls 4. Therefore, in such a plating method, in order to transport each plated item 1 in a horizontal state, a pass line width W ₁ corresponding to the width of the plurality of plated items is required, and the load zone D and the pretreatment zone A are , plating zone C, post-processing zone B, and unloading zone E, in order to pass a large number of plating objects 1 through, the entire processing tank 3 must be constructed with a correspondingly wide width, and the width W ₂ of each processing tank 3 is the same. In other words, if there is a processing tank that is limited to a certain width size, the number of sheets of plated material that can be passed through within that width size [in other words, the number of plated items in parallel] ] is limited, and there is a problem that you cannot increase it.

This invention was made with attention to these points, and is characterized by transporting a plurality of plated strips in a vertical format instead of horizontally (horizontal) in order to efficiently process a plurality of plated strips at a high density. Specifically, the method of plating a strip-shaped plated object according to the present invention is such that each of a plurality of strip-shaped plated objects is vertically formed in each groove of a plurality of grooved rolls arranged along a pass line. The gist is that the material is transported while being supported by a holder and undergoes the plating process.

The details of this invention will be explained below with reference to the drawings. In the following description, the same reference numerals will be used for parts common to those in the prior art, and redundant explanation will be omitted. First of all,
In this invention, the plating object 1 is conveyed vertically instead of horizontally, and therefore a plurality of grooved rolls 10 are used in place of the conventional horizontal rolls 4. The plurality of grooves 11 of these grooved rolls 10 are of a size and shape that can sufficiently support the plated object 1 in a vertical shape, and have wide openings 12 to easily receive the plated object 1, as shown in FIG. 5A. ,
It is also possible to support the plating object 1 on the bottom 13 and the slope 14 so that it does not fall down, and to support the plating object 1 as a whole in a slightly "inclined" vertical position. The bottom 1 corresponds to the thickness t.
It is also possible to support the plating object 1 vertically in a "nearly vertical state" by recessing the grooves 11 of various shapes and sizes.
can be adopted. Of course, in order to transfer a large number of plated objects 1 at the same time, grooves 11 corresponding to the number of sheets must be formed in the roll 10. If the plated object 1 is a normal IC lead frame, the grooves 11 The opening is 0.25~10mm, bottom 13,15
The size is 0.15~2.0mm, the depth is 3~25mm, groove 1
The pitch between the two can be about 5 to 40 mm. Each roll 10 has a plurality of such grooves 11 on its circumferential surface, and a plurality of grooves 11 are arranged along the pass line. For placement, various shapes,
It is also possible to combine rolls 10 with grooves 11 of different sizes, and in the example of FIG.
In each central section of post-processing zone B, a grooved roll 10 with a relatively small pitch is used, and in the sections before and after that, grooved rolls 10 with a relatively large pitch and a relatively wide opening are used in combination. In processing zone A and post-processing zone B, even if the processing capacity of loading, plating, and unloading zones D, C, and E becomes considerably high, a large number of plating objects 1 are vertically arranged and supported in a high density manner. It is designed so that it can be transported while

Incidentally, the slope 1 of the groove 11 as shown in Fig. 5 A and B
It is also possible to use slope 4 for sequential heating or rapid heating, or, for example, load zone D is fed horizontally, and after entering pretreatment zone A, slope 1 is gradually increased.
Roll 1 with grooves 11 whose inclination in 4 is steeper than warm
It is fully possible to transport the plated object 1 from horizontal (horizontal) to vertical by combining 0 and vice versa.

In this way, the plated items are vertically supported and transported within each groove of the plurality of grooved rolls, and a large number of the plated items are transferred in parallel for pretreatment, plating, and post-processing. It is treated and plated.

Since the method for plating plated strips according to the present invention is as described above, it is possible to perform plating using grooved rolls even if the roll width and processing tank width are the same compared to the conventional plating method using horizontal rolls. Since the objects are supported and transferred vertically, by reducing the groove pitch of the roll and forming a large number of grooves on the roll, it is possible to achieve a much higher density and increase the transfer capacity, making it possible to handle strip-shaped plated objects. For plating processing methods in which pre-processing, plating, and post-processing are carried out in parallel, a considerable improvement in plating processing capacity can be expected, especially when the number of strip-shaped plated objects to be transferred is considerably increased in the plating processing conditions. It also has the advantage of being easy to set, making it easier to design the plating process line.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing how the horizontal roll used in the conventional plating method is used, Figure 2 is a schematic plan view of the plating process from loading to unloading zone, and Figure 3 is the middle of Figure 2. FIG. 4 is a perspective view corresponding to FIG. 1 showing the state of use of the grooved roll used in the plating method according to the present invention, and FIGS. 6 is a partial front view of a roll showing an embodiment of the grooved roll, and FIG. 6 is a second embodiment showing an embodiment of the present invention.
FIG. 7 is a plan view corresponding to FIG. 3 showing the transfer state of the plating material indicated by the arrow in FIG. 6. 1... Strip-shaped plated material, 3... Processing tank, 4...
Horizontal roll, A... pre-processing zone, B... post-processing zone, C... plating zone, D... loading zone, E... unloading zone, 10... grooved roll, 11... groove.

Claims (1)

[Scope of Claims] 1. In a method for plating a plated strip in which a plurality of plated strips are transferred in parallel and subjected to pre-treatment, plating and post-treatment, the plated strip has the following properties: 1. A method for plating a strip-shaped plated object, characterized in that the strip-shaped plated object is transported while being vertically supported in each groove of a plurality of grooved rolls arranged along a pass line.