JPH07105596B2 - Inner layer material storage cage for blackening treatment - Google Patents

Description

Description: Outline A frame member that exposes the front and back surfaces of an inner layer material of a printed circuit board and holds the inner layer material, and an appropriate gap between the frame members when the plurality of frame members are accommodated from above. In regard to the cage for accommodating the inner layer material for blackening treatment, which is composed of cage members aligned in parallel with each other, it is intended to provide a cage that can be used regardless of the thickness of the inner layer material and is easy to handle. Is made by bending and welding a metal wire rod,
A frame portion having a rectangular contour, and an inner layer material locking portion projecting inward from a front side of the frame portion in the accommodation direction of the car member and an opposite side thereof, and the car member accommodates the frame member. In addition, rail portions having a generally U-shaped cross section into which the frame portion is loosely fitted are provided on both sides of the car member.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blackening treatment inner layer material storage basket used for immersing an inner layer material of a printed circuit board in a treatment bath when blackening the inner layer material.

In the field of manufacturing multilayer printed circuit boards, in order to improve the adhesion between the inner layer material and the resin, the inner layer material on which the copper pattern is formed may be subjected to blackening treatment. The blackening treatment is performed by immersing the inner layer material on which the copper pattern is formed in the treatment bath. Here, since the thickness of the inner layer material is as thin as about 0.2 mm, if a plurality of inner layer materials are soaked in the treatment bath as they are, the inner layer materials may contact with each other and uniform blackening may be difficult. Therefore, in order to prevent the inner layer materials from coming into contact with each other in the processing bath, a dedicated inner layer material storage basket is used.

2. Description of the Related Art Conventionally, when a blackening treatment is applied to a relatively thick inner layer material, a plug-in type cage (5th
A uniform blackening treatment could be carried out by using the substantially same structure as the car member in the embodiment of the present invention shown in FIGS. However, in recent years, a thin (for example, about 0.2 mm) inner layer material has been used with an increase in the number of laminated printed circuit boards. When performing blackening treatment on such a thin inner layer material, When the above-mentioned plug-in basket is used, the inner layer materials may come into contact with and adhere to each other due to stirring of the treatment bath or the like, and uniform blackening treatment may not be performed. For this reason, when the blackening treatment is performed on a relatively thin inner layer material, a storage basket having a structure in which the inner layer materials are sandwiched one by one by a stainless frame is used.

[Problems to be Solved by the Invention] As described above, the plug-in type cage has a problem that it cannot be used regardless of the thickness of the inner layer material, assuming that the uniform blackening treatment is realized. On the other hand, in the case of a storage basket that is sandwiched by a frame, it can be used regardless of the thickness of the inner layer material, but there is a problem that it takes a lot of assembly and disassembly work and is not easy to handle.

The present invention was created in view of the above circumstances, and an object thereof is to provide an inner layer material storage basket for blackening treatment, which can be used regardless of the thickness of the inner layer material and is easy to handle.

Means for Solving the Problems An inner layer material-containing cage for blackening treatment of the present invention made to solve the above-mentioned technical problems holds the inner layer material by exposing the front and back surfaces of the inner layer material of a printed circuit board. An inner layer material accommodating cage for blackening treatment, which comprises a frame member and a car member in which the frame members are aligned in parallel with each other at an appropriate interval when the plurality of frame members are accommodated from above.

The frame member is formed by bending and welding a metal wire rod and has a rectangular contour, and an inner layer member assembly projecting inward from a front side and a side opposite to a housing direction of the frame section in the car member. The car member is provided with rail portions having a substantially U-shaped cross section into which the frame portion is loosely fitted when the frame member is accommodated, on both sides of the car member.

Action Since the inner layer material locking portion is provided in the frame member, the inner layer material held by the frame member does not easily move in the vertical direction.
Since the car member is provided with a rail portion having a substantially U-shaped cross section, when the frame member holding the inner layer material is housed in the car member, the inner layer material is not connected to the frame portion of the frame member and the inside of the rail portion of the car member. Since the inner layer material is sandwiched between the inner layer material and the inner layer material, the inner layer material is prevented from coming into contact with each other during the blackening process even when the inner layer material is thin. Further, when accommodating the inner layer material, it suffices that the inner layer material is locked to the inner layer material locking portion of the frame member and the frame member is housed in the car member in this state, so that the handling is easy.

Embodiments Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic perspective view of a frame member in an embodiment of the present invention,
2 is a front view of the same frame member, and FIG. 3 is II in FIG.
FIG. 4 is a sectional view taken along line I-III, and FIG. 4 is a sectional view taken along line IV-IV.

Reference numeral 2 denotes a frame member that holds the inner layer material by exposing the front surface and the back surface of the inner layer material of the printed circuit board. The frame member 2 includes a frame portion 4 having a rectangular contour and an inner side from the upper and lower sides of the frame portion 4. And inner layer material engaging portions 6 and 8 that project to the inside. The frame portion 4 bends and welds the outer wire rod 10 and the inner wire rod 12, and
A reinforcing wire 14 is welded and fixed between the inner wire 10 and the inner wire 12. The inner layer material locking portion 6 on the upper side is formed by welding and fixing two wire rods bent in a U-shape to the outer wire rod 10 and bending them downward. The inner layer material locking portion 8 on the lower side is formed by welding and fixing two U-shaped wire rods to the inner wire material 12 and the outer wire material 10 and directing this to the same side as the upper inner layer material locking portion 6 in the upward direction. It is bent and formed.

According to the structure of this frame member, when the inner layer material having substantially the same contour as the frame portion 4 is locked between the inner layer material locking portions 6 and 8, the inner layer material is against the frame member 2. It is prevented from moving up and down. The lower inner layer material locking portion 8 is not welded and fixed only to the outer wire rod 10 like the upper inner layer material locking portion 6, but is welded and fixed to the outer wire material 10 and the inner wire material 12. This is to prevent the lower end of the inner layer material from coming into contact with and damaging the car member when the frame member 2 is housed in the car member described later while holding the inner layer material.

5 is a front view of a car member in an embodiment of the present invention, FIG. 6 is a top view of the car member, FIG. 7 is a partially enlarged view of FIG. 6, and FIG. 8 is a side view of the car member. is there. In the following description, the front side of the plane of FIG. 5 is the front side of the car member, the back side of the plane is the back side of the car member, and the left and right sides in FIG. 5 are the left side of the car member, respectively. Side and right side.

16 is a handle formed by bending a wire rod such as a round rod wire into a rectangular shape, and the front handle 16 and the rear handle 16 are welded together by two connecting rods 18 and 20 made of the same wire. Are linked together. Also, the two handles on the front side 16
And the two handles 16 on the rear side are six side plates 24, 26, 28 in total.
And two connecting rods 22 are connected by welding. Reference numeral 30 denotes a rail portion fixed to the side plates 24, 26, 28 on the same side by spot welding, and this rail portion 30 is formed by bending an elongated metal plate into a substantially U-shaped cross section. . In this embodiment, the bent portion has an inclination. A plurality of rail portions 30 are provided at equal intervals in the longitudinal direction of the side plates 24, 26, 28, that is, in the direction from the front side to the back side.

A case where the frame member 2 and the inner layer material are housed in the car member 15 shown in FIGS. 5 to 8 will be described. The interval between the rail portions 30 facing each other matches the width of the frame portion 4 of the frame member 2. First, the inner layer material is locked by the inner layer material locking portions 6 and 8 of the frame member to hold the inner layer material by the frame member 2.
In this case, since the inner layer material is easily elastically deformed when the inner layer material is thin, the operation of holding the inner layer material on the frame member 2 is extremely easy. When the inner layer material is thick and is not easily elastically deformed, the inner layer material is attached from the side of the frame member 2 to the inner layer material locking portion.
Can be locked to 6,8. Next, the frame member 2 holding the inner layer material is inserted into the pair of rail portions 30 facing each other from above, as shown by the contour line (2) in FIGS. 5 and 8,
The frame portion 4 of the frame member is loosely fitted in the rail portion 30. At this time, since the portion of the frame member corresponding to the lower side of the outer wire rod 10 abuts on the connecting rod 22 of the car member, there is no risk of damaging the inner layer material positioned inside the outer wire rod 10.

When the frame member 2 and the inner layer material are housed in the car member 15 in this manner, the inner layer material is sandwiched between the frame portion 4 of the frame member and the rail portion 30 of the car member. When immersed in the blackening treatment bath, the inner layer materials are prevented from coming into contact with each other due to a stirring operation or the like.

In the present embodiment, the bent portion of the rail portion 30 is formed in a tapered shape so that the rail portion 30 is in line contact with the frame member and the inner layer material to minimize play on at least one side. is there.

EFFECTS OF THE INVENTION As described above, according to the present invention, it is possible to provide an inner layer material storage basket for blackening treatment that can be used regardless of the thickness of the inner layer material and is easy to handle. Play.

[Brief description of drawings]

1 is a schematic perspective view of a frame member in an embodiment of the present invention, FIG. 2 is a front view of the frame member, FIG. 3 is a sectional view taken along line III-III of FIG. 2, and FIG. 4 is FIG. IV-IV line sectional view of FIG. 5, FIG. 5 is a front view of a car member in an embodiment of the present invention, FIG. 6 is a top view of the car member, FIG. 7 is a partially enlarged view of FIG. 6, and FIG. [Fig. 4] is a side view of the car member. 2 ... Frame member, 4 ... Frame part, 6, 8 ... Inner layer material locking part, 15
… Car parts, 30… rails.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-62-242531 (JP, A) Actually opened 62-146734 (JP, U) Actually opened 62-184778 (JP, U)

Claims (1)

[Claims] 1. A frame member (2) for holding the inner layer material by exposing the front and back surfaces of the inner layer material of a printed circuit board, and the frame member (2) when the plurality of frame members (2) are accommodated from above. 2)
Is a car for accommodating an inner layer material for blackening treatment, which comprises car members (15) aligned in parallel at appropriate intervals, wherein the frame member (2) is a rectangle formed by bending and welding a metal wire rod. A frame portion (4) having a contour and inner layer material locking portions (6, 8) projecting inward from the front side and the opposite side of the accommodation direction of the frame portion (4) in the car member (15).
The car member (15) includes a rail part (30) having a substantially U-shaped cross section into which the frame part (4) is loosely fitted when the frame member (2) is housed. ) A basket for accommodating inner layer material for blackening treatment, characterized in that it is provided on both sides.