JP2657202B2 - Hanger - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hanger used in a dipping process such as a plating process and a washing process of a plate body such as a printed wiring board, and more particularly to a hanger having a guide function.

[0002]

2. Description of the Related Art For example, in a manufacturing process of a plate body such as a printed wiring board, there are many immersion processing steps of immersing a non-processed plate (hereinafter, referred to as a substrate) in a processing solution such as a plating solution or a cleaning solution. Have been.

In these immersion treatment processes, for example, plating of a plate such as a printed wiring board, in order to process a large number of substrates at the same time, a large number of substrates are erected vertically in a processing tank and parallel to the thickness direction. They are arranged side by side.

In order to make the non-processed plate stand vertically in the processing tank, for example, a hanger 100 as shown in a front view of FIG. 5 and a side view of FIG. 6 is used. This conventional hanger includes at least one clamp 120 suspended from a carry bar 110 at an appropriate distance in the horizontal direction. Each clamp 120 includes a fixed clamp member 121 fixed to the carry bar 110 and a fixed clamp member 121 fixed to the carry bar 110. Clamp member 12
A movable clamp member 123 pivotally connected to a fulcrum 122 set at an intermediate portion of the fixed clamp member 12;
A spring 124 that presses the lower end of the movable clamp member 123 is provided on the lower end of the movable clamp member 123.

When the substrate 130 is held by the hanger 100, as shown in the flow chart of FIG. 7, the substrate 130 is vertically erected below the hanger 100 by an erecting device 140 (a), and both fixed and movable Clamp member 121
After the upper part of 123 is sandwiched by the forced open scissors means 150 and their lower ends are opened, the hanger 100 is lowered (b), and the forced open scissor means 150 is removed from the upper parts of the fixed and movable clamp members 121 and 123. The procedure of (c) is adopted in which the lower ends are closed so as to be separated from each other, and the upper end of the substrate 130 is sandwiched between the lower ends of the fixed and movable clamp members 121 and 123.

As shown in FIG. 8, the hanger 100 holding the substrate 130 is sequentially moved above the processing tank 160 and is lowered downward at a predetermined interval as shown in FIG. 130 are arranged in parallel in the plate thickness direction while standing vertically in the processing tank 160.

Here, in order to effectively use the processing capacity of the processing tank 160, the interval between the substrates 130 in the processing tank 160 is narrowed so that a large number of substrates 130 can be processed at one time. .

[0008]

However, the substrate 1
If the interval of 30 is set too narrow, the
Since the substrate 130 is warped due to the swinging or clamping of the substrate 130, as shown in FIG. 8, the substrate 130 is put into the upper end of the movable clamp member 123 of the hanger 100 that holds the substrate 130 previously placed in the processing tank 160. The lower end of the substrate 130 is caught and the hanger 100 holding the substrate 130
However, there is a problem that the substrate 130 is disengaged from the transfer device and falls down as shown by a broken line in the figure, and the substrate 130 is damaged or broken.

The substrate 13 previously placed in the processing bath 160
The movable clamp member 123 of the hanger 100 holding 0
The substrate 130 previously placed in the processing tank 160 may fall from the clamp 120 due to an impact when the lower end of the substrate 130 to be inserted later is hooked on the upper end of the substrate 130.

Further, when such a trouble occurs,
It is necessary to stop the flow of the production line and perform a recovery operation, and productivity is significantly impaired. The present invention has been made in view of the above circumstances, and prevents a hanger or a substrate from falling when descending into a processing tank, and prevents damage or breakage of the substrate due to the fall of the hanger, and enhances productivity. With the goal.

[0011]

In order to achieve the above object, a hanger of the present invention is provided on a clamp support member 1 such as a carry bar 1c as shown in FIG.
The two clamps 2 are suspended, and each clamp 2 is swingably connected to a fixed clamp member 21 fixed to the clamp fixed member 1 and a fulcrum 22 set at an intermediate portion of the fixed clamp member 21. Clamp member 2
3 and a hanger provided with a spring 24 for pressing the lower end of the movable clamp member 23 at the lower end of the fixed clamp member 21, the upper part of the movable clamp member 23 of the clamp 2 is extended above the fixed clamp member 21. The extension portion is formed as a guide portion 23a inclined toward the fixed clamp member 21.

[0012]

In the present invention, the upper part of the movable clamp member is extended above the fixed clamp member, and this extension is inclined toward the fixed clamp member.
The swing range above the movable clamp member 23 is not narrowed by the extension.

Further, since the upper edge of the guide portion 23a is inclined obliquely downward from the fixed clamp member 21 side to the opposite side, the lower edge of the substrate 130 descending above the movable clamp member 23 Is guided to the side opposite to the fixed clamp member 21.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A hanger according to an embodiment of the present invention will be described below in detail with reference to FIGS.

As shown in the side view of FIG. 1 and the front view of FIG. 2, the hanger is supported on a carry bar 1c as a clamp support member 1 by suspending the hanger at appropriate intervals in the horizontal direction. Here, 11) clamps 2 are provided.

The main body 11 of the carry bar 1c is made of, for example, a flat bar made of copper or the like.
And an insulating support member 13 received on the side wall of the processing tank
And

Each of the clamps 2 is formed of a metal material having high conductivity and chemical resistance such as stainless steel, and is set at a fixed clamp member 21 fixed to the carry bar 1c and at an intermediate portion of the fixed clamp member 21. A movable clamp member 23 swingably connected to the fulcrum 22 and a spring 24 for pressing the lower end of the movable clamp member 23 on the lower end of the fixed clamp member 21.

The fixed and movable clamp members 21 and 2
The included angle of 3 is 1 when these lower ends are closed.
The angle is set to about 0 ° to 15 ° (here, about 11 °).
The guide portion 23a is formed by extending the upper part of the movable clamp member 23 above the fixed clamp member 21 by, for example, about 35 mm higher and inclining the upper end by about 35 mm toward the fixed clamp member 21 side. I have.

The guide portion 23a can be formed in a curved shape such as an arc or a parabola, but in this embodiment, in order to reduce the processing cost, the guide portion 23a is formed in a straight line. I have.

It is preferable that the inclination angle of the guide portion 23a with respect to the other portion of the movable clamp member 23 is about 30 ° to 45 °.
Guide portion 23a to secure a horizontal distance of
It is not preferable because the height of the guide portion 23a needs to be considerably large, and if it exceeds 45 °, the guiding action of the guide portion 23a is unpreferably reduced. In this example,
The angle of inclination is set at about 40 ° where the best result is obtained.

As shown in the enlarged side view of FIG. 3 and the enlarged front view of FIG. 4, the end of the movable clamp member 23 on the fixed clamp member 21 side at the lower end has a tip for securely supporting the substrate 130. A sharp clamp pin 25 protrudes, and a relief hole 26 is provided at the lower end of the fixed clamp member 21 so that the tip of the clamp pin 25 protrudes in a non-contact manner.

The escape hole 26 is provided to prevent the tip of the clamp pin 25 from being worn and becoming dull when the lower ends of the fixed and movable clamp members 21 and 23 are closed. And therefore the escape hole 26
Alternatively, a bottomed hole or a through hole may be provided.

However, when such holes or through holes are provided, the plating solution may remain therein and cause various obstacles in the subsequent processing. In order to prevent the occurrence, a relief hole 26 formed of a U-shaped groove opened at the lower end of the fixed clamp member 21 is provided.

The procedure for holding the substrate 130 on the hanger may be the same as the conventional procedure. Here, the movable clamp member 2
3 is extended above the fixed clamp member 21,
Since this extension is inclined toward the fixed clamp member 21, the movable clamp member 2 above the movable clamp member 23
The swing range to one side is not narrowed by the extension.

Further, the procedure for taking the substrate 130 held by the hanger in and out of the processing tank may be the same as the conventional procedure.
When the lower edge of the substrate 130 descends above the guide portion 23a of the movable clamp member 23 of the hanger previously set in the processing tank due to the swing of the substrate 130 due to the conveyance or the warpage of the substrate 130 by clamping. Guide part 23a
Is inclined obliquely downward from the fixed clamp member 21 side to the opposite side, so that the lower edge of the substrate 130 descending upward does not catch on the guide portion 23a, Since the board 130 is guided to the side opposite to the fixed clamp member 21, it is possible to prevent the board 130 from being caught by the clamp 2 and the hanger holding the board 130 from falling down to damage or break the board 130. .

Further, there is no impact when the lower end of the substrate 130 to be inserted later is caught on the upper end of the movable clamp member 23 of the hanger for holding the substrate 130 which has been previously inserted into the processing tank. Does not fall from the clamp 2.

Since the occurrence of these troubles can be prevented, the productivity of the production line can be improved without stopping the flow of the production line. In addition, the clearance between the hangers dropped into the processing tank can be reduced, for example, from about 35 mm or more in the related art to about 8 to 10 mm. The processing capacity of the tank can be used more effectively, and the productivity can be further increased.

Further, since the allowable range of the swing of the substrate 130 due to the transfer can be widened, it is possible to increase the transfer speed of the hanger and shorten the time for putting the substrate into the processing tank and the time for removing the substrate from the processing tank. And productivity can be further enhanced.

In the above description, only the hanger having a plurality of clamps has been described. However, the present invention is not limited to the hanger, and the present invention is naturally applicable even when the number of clamps is one. Can be.

[0030]

As described above, according to the hanger of the present invention, when the substrate to be loaded later descends above the movable clamp member of the hanger supporting the substrate previously loaded into the processing tank. The lower end of the substrate loaded later is guided by the guide member to the side of the movable clamp member.

Thus, it is possible to prevent the lower end of the substrate to be loaded later from being caught by the movable clamp member of the hanger set in the processing tank and the substrate and the hanger holding the substrate from falling.

Therefore, it is possible to prevent the substrate from being damaged or broken due to the overhang of the hanger, and the substrate that has been put into the processing tank earlier is dropped from the hanger by the impact of the substrate to be put into the processing tank later hitting the hanger. Can be prevented.

Further, since the occurrence of these troubles is prevented, the flow of the production line does not need to be stopped to recover from the troubles, so that the productivity can be improved. Furthermore, the interval between the hangers lowered into the processing tank is reduced, so that a larger number of substrates can be accommodated in the processing tank and a large number of substrates can be processed at the same time, so that the productivity can be further improved.

In addition, since the allowable range of the swing of the substrate accompanying the transfer can be widened, it is possible to increase the transfer speed of the hanger and shorten the time for putting the substrate into the processing tank and the time for removing the substrate from the processing tank. And productivity can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a side view of the present invention.

FIG. 2 is a front view of the present invention.

FIG. 3 is an enlarged side view of a main part of the present invention.

FIG. 4 is an enlarged front view of a main part of the present invention.

FIG. 5 is a front view of a conventional example.

FIG. 6 is a side view of a conventional example.

FIG. 7 is a flowchart showing a procedure of a clamp operation.

FIG. 8 is a schematic diagram showing a problem of a conventional example.

[Explanation of symbols]

 Reference Signs List 1 clamp support member 1c carry bar 2 clamp 21 fixed clamp member 22 fulcrum 23 movable clamp member 23a guide portion 24 spring 25 clamp pin 26 relief hole

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location H05K 3/26 7511-4E H05K 3/26

Claims (4)

(57) [Claims] At least one clamp (2) is suspended from a clamp support member (1), and each clamp (2) is
(2) is a movable clamp that is swingably connected to a fixed clamp member (21) fixed to the clamp fixed member (1) and a fulcrum (22) set at an intermediate portion between the fixed clamp member (21). In a hanger provided with a member (23) and a spring (24) pressing the lower end of the movable clamp member (23) at the lower end of the fixed clamp member (21), the hanger of the movable clamp member (23) of the clamp (2) is provided. The upper portion extends above the fixed clamp member (21), and the extended portion is inclined toward the fixed clamp member (21).
a) A hanger characterized by the following. 2. The guide part (23a) is connected to a movable clamp member (23).
The hanger according to claim 1, wherein the hanger is inclined by 30 ° to 45 ° with respect to the other portion. 3. A clamp pin (2) having a sharp tip at one of the lower end of the fixed clamp (21) and the lower end of the movable clamp (23).
3. The hanger according to claim 1, further comprising a relief hole provided in the other end of the clamp pin, the distal end of the clamp pin protruding in a non-contact manner. 4. The hanger according to claim 3, wherein the relief hole (26) is continuous with a lower end of the fixed clamp (21) or the movable clamp (23) and is opened at the lower end.