JPH04288899A - Printed board transfer device - Google Patents

Abstract

PURPOSE:To provide a printed board transfer device which has a large processing capability and an excellent workability for transferring, storage, etc., without causing any default processings such as breakage or failures in painting of the printed board. CONSTITUTION:This transfer device consists of a transfer basket and a holding jig 1 which can attach or detach a printed board to be loaded in said basket. The jig 1 is composed of an outer frame 11 to be secured to the transfer basket, and an inner frame 13 placed by means of a spring 12 inside the outer frame. Furthermore, the frame 13 is provided with a clamp 14 for clamping the board 3.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device capable of holding, conveying and storing a large number of printed circuit boards.

0002

2. Description of the Related Art As shown in FIGS. 7 and 8, printed circuit boards 8 have conventionally been transported and stored using various holders 9 and 90. For example, the first transport method is to lean the printed circuit board 8 against the locking groove 911 of the rack 91 and transport it to the next process or storage location, as shown in FIG. In this method, a holder 9 consisting of a rack 91, a handle portion 92, a support frame 93, and a bottom support portion 94 is used.

[0003] As shown in FIG. 8, the second conveyance method uses a support frame 93, a coil spring-shaped clip 95 attached to the support frame 93, a handle part 92, and a bottom support part 94.
A holder 90 consisting of the following is used. In this method, the clip 95 is locked into the locking hole 81 of the printed circuit board 8, and the printed circuit board 8 is suspended from the support frame 93.

0004

[Problem to be Solved] However, the above technique has the following problems. That is, the holder 9 used in the first transport method has a small holding force for the rack 91, and the thin printed circuit board 9 is easily bent as a whole. Therefore,
They may come into contact with adjacent printed circuit boards 9 or overlap each other. Therefore, the printed circuit board 9 that has just been painted may have a coating defect, and the printed circuit board 9 that has just been plated may have processing defects such as a plating defect. Further, the circuit formed on the surface of the printed circuit board 8 is easily damaged by contact.

[0005] Furthermore, the printed circuit boards 8 swing due to the wind pressure of air convection generated during transportation, and the printed circuit boards come into contact with each other and overlap each other, resulting in the above-mentioned processing failure. Therefore, in the holder 9, the gap between the printed circuit boards 8 must be increased, and a large number of printed circuit boards cannot be transported and stored at the same time. Therefore, the above-mentioned holder 9 has a small processing capacity for transportation, storage, etc.
Workability such as transportation and storage is not good. On the other hand, in the second holder 90, the printed circuit board 8 is held by the clip 95.
The work of suspending it is complicated and the work efficiency is not good.

[0006] Also, a clip 95 is attached to the printed circuit board 8.
As a result, a strong tension such as a gripping force is exerted locally. Therefore, the gripping portion of the printed circuit board 8 may be damaged due to vibrations, impacts, etc. that occur during transportation. The present invention has been made in view of such conventional problems, and provides a printed circuit board conveyance device that does not cause processing defects such as damage to printed circuit boards or poor coating, and is excellent in workability such as transportation and storage. This is what I am trying to do.

[0007]

[Means for Solving the Problems] The present invention includes a transport basket and a holder for a printed circuit board that is detachably mounted in the transport basket, and the holder includes an outer frame for locking to the transport basket; The printed circuit board conveying device comprises an inner frame disposed inside the outer frame via a spring, and the inner frame has a clamp for gripping the printed circuit board. The most noteworthy feature of the present invention is that the holder consists of an outer frame for locking to the transport basket, and an inner frame disposed inside the outer frame via a spring, and the inner frame is It has a clamp for gripping the substrate.

The outer frame and the inner frame are, for example, rectangular frames, and may be constructed of a light alloy frame, a wooden frame, or a plastic frame depending on the shape and size of the printed circuit board. The inner dimension of the outer frame is slightly larger than the outer dimension of the inner frame, and there is a gap between the two.

Further, a spring is disposed between the outer frame and the inner frame, and the tension of the spring causes the inner frame to be stretched toward the outer frame. For example, a spring spring is used as the spring. Preferably, a plurality of springs are provided on each side of the outer frame and the inner frame. As a result, the inner frame is stretched in a well-balanced manner inside the outer frame. The above-mentioned clamp includes, for example, a rotating shaft, a main body supported by the rotating shaft, an elastic member such as a leaf spring that moves the main body up and down, and a gripping member placed at the tip of the main body. Consists of ends.

The transport basket has a locking groove for locking the holder and a partition frame inside thereof. For example, the printed circuit board has a thickness of about 0.4 m.
Thin printed circuit boards of m or less, lead frame boards,
There is a chip carrier board. In addition to finished products, the printed circuit boards include, for example, intermediate products coated with photosensitive resin paint and intermediate products before and after plating.

[0011]

[Operations and Effects] When transporting a printed circuit board using the transport device of the present invention, the printed circuit board is first clamped and held within the inner frame. Next, a plurality of the holders are installed in the transport basket. Next, the transport basket is moved onto a transport means such as a transport table or a conveyor. The transport basket is then moved to the next process and storage location by the transport means. Since the holder always has a spring interposed between the outer frame and the inner frame even during transportation, the tensile force of the spring always acts between the outer frame and the inner frame. Therefore, even if the holder swings, the swing of the inner frame is absorbed by the spring. Therefore, the printed circuit boards do not come into contact with each other or overlap each other, resulting in processing defects such as poor coating.

[0012] Furthermore, although the printed circuit board is held by the clamp, since a spring is interposed between the outer frame and the inner frame, a force acts to relieve the tensile force of the spring. . Therefore, part of the printed circuit board will not be damaged. Furthermore, a plurality of holders can be attached to the transport basket at the same time. Therefore, the transport basket can transport many printed circuit boards at the same time.
It has a large processing capacity for transportation and storage, and has excellent workability. Therefore, according to the present invention, it is possible to provide a printed circuit board conveyance device that does not cause processing defects such as damage to printed circuit boards or poor coating, and is excellent in workability such as transportation and storage.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A printed circuit board conveying apparatus according to an embodiment of the present invention will be described with reference to FIGS. 1 to 6. That is, as shown in FIG. 2, the conveyance device of this example includes a conveyance basket 2 and a holder 1 for a printed circuit board 3 that is removably mounted within the conveyance basket 2. As shown in FIG. 1, the holder 1 has an outer frame 11 for locking onto the transport basket 2
and an inner frame 13 disposed inside the outer frame 11 via a spring 12. In addition, the inner frame 13 is connected to the printed circuit board 3.
It has a plurality of clamps 14 for gripping.

As shown in FIG. 2, the transport basket 2 includes a pair of supporting bodies 20 facing each other, and a partition frame 21 and a locking groove 22 for locking a holder, which are disposed on the upper and lower sides of the supporting bodies 20, respectively. , and a bottom support portion 23. Further, the partition frame 21 and the locking groove 22 are configured to simultaneously hold a large number of the holders 1, as shown in FIGS. 2 and 4. As shown in FIG. 1, the outer frame 11 is made of a rectangular light metal frame. The outer frame 11 is slightly larger than the outer dimension of the inner frame 13, and as shown in FIG. 1, there is a gap t between the two. The inner frame 13 is constructed of a frame body having a substantially similar shape to the outer frame 11 and made of the same material. What should be noted here is that the inner frame 13 and the outer frame 1
In the gap t between 1 and 1, there are 8 springs 12 in total, 2 on each four sides.
This means that they are individually placed. The spring 12 is made of a coil spring, and is mounted so that the outer part of the inner frame 13 is stretched inside the outer frame 11 in a well-balanced manner. As a result, the inner frame 13 is attached to the inner side of the outer frame 11 in a state where it is always stretched to the inner side of the outer frame 11.

The inner frame 13 also has a clamp 14 for gripping the printed circuit board 3, as shown in FIG. Four clamps 14 are arranged inside the inner frame 13, as shown in FIG. Further, as shown in FIG. 5, the clamp 14 includes a rotation shaft 140, a pair of clamping bodies 141, 141, and a leaf spring 142 for vertically moving one side of the body 141. Further, as shown in FIG. 6, the main body 141 has a clamping end 1411 and a draining recess 1412 at its tip. Therefore, the printed circuit board 3, which is in a wet state immediately after being coated with a photosensitive resin paint or immersed in a plating solution, can be clamped with a small contact area, for example.

As shown in FIG. 5, the clamp 13 has a locking member 17 such as a bolt 171 and a nut 172.
It is attached and fixed to the inner frame 13 via. The clamp 14 grips the printed circuit board 3 at the clamping end 1411 by the tensile force of the plate spring 142. The printed circuit board 3 includes, in addition to a thin plate-like finished printed circuit board with a thickness of 0.4 mm or less, an intermediate product coated with a photosensitive resin, an intermediate product before and after plating, and the like.

Next, the functions and effects will be explained. That is, when transporting the printed circuit board 3 using the transport device of this embodiment, the printed circuit board 3 is first clamped and held within the inner frame 13 by the clamps 14 . Next, a plurality of the holders 1 are mounted in the transport basket 2. Next, the transport basket 2 is moved onto a transport means such as a transport table or a belt conveyor. Then, the transport basket 2 is moved to the next process and storage location by the transport means.

The holder 1 has a spring 12 interposed between the outer frame 11 and the inner frame 13 at all times even during transportation.
The tensile force of the spring 12 is acting. Therefore, the holder 1
Even if the entire frame oscillates, the oscillation of the inner frame 13 is absorbed by the spring. Therefore, the printed circuit boards 3 do not come into contact with each other or overlap each other, resulting in processing defects such as coating defects. Furthermore, although the printed circuit board 3 is held by the clamp 14, since the spring 12 is interposed between the outer frame 11 and the inner frame 13, the gripping portion of the printed circuit board 3 may be damaged. Never.

Furthermore, the transport basket 2 can have a plurality of holders 1 attached thereto at the same time. Therefore, the transport basket can transport a large number of printed circuit boards 3 at the same time, and has a large processing capacity for transport and storage.
It also has excellent workability such as transportation and storage.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of a printed circuit board holder according to an embodiment.

FIG. 2 is a perspective view of a printed circuit board conveyance device according to an embodiment.

FIG. 3 is a plan view showing how the clamp is attached according to the embodiment.

FIG. 4 is a plan view showing a state in which a holder is installed in the transport basket according to the embodiment.

FIG. 5 is a sectional view showing how the clamp is attached according to the embodiment.

FIG. 6 is a perspective view of the upper portion of the clamp according to the embodiment.

FIG. 7 is a perspective view of a conventional printed circuit board conveyance device.

FIG. 8 is a perspective view of another example of a conventional printed circuit board conveyance device.

[Explanation of symbols]

1. ．． ．． holder, 11. ．． ．． Outer frame, 12. ．． ．． Spring, 13. ．． ．． The inner frame, 14. ．． ．． clamp, 2. ．． ．． transport basket, 3. ．． ．． Printed board,

Claims (1)

[Claims] Claim 1: Consisting of a transport basket and a holder for a printed circuit board that is removably mounted in the transport basket, the holder comprises an outer frame for locking to the transport basket, and an inner side of the outer frame. 1. A conveying device for a printed circuit board, comprising an inner frame arranged with a spring interposed between the inner frame and the inner frame, the inner frame having a clamp for gripping the printed circuit board.