JPH04249400A - Conveyor operation auxiliary jig of thin-type printed wiring board - Google Patents

Abstract

PURPOSE:To enable easy fitting and removal of a wiring board by providing a substrate connecting means with a supporting pin which is provided projectingly to one side of a carrier rear end part of a wear plate corresponding to a connection hole formed in a carrier front edge part of a wiring board and a keep plate whose one end part is fixed to one side of the carrier rear end part and other end part is in elastic contact with an upper end of the supporting pin. CONSTITUTION:A keep plate 22 is elastically deformed for making one end part thereof rise above a supporting pin 21 to insert a thin type printed wiring board 5 between a keep plate 22, and a supporting pin 21 and a wear plate 1 or to pull it out between the keep plate 22, and the supporting pin 21 and the wear plate 1. A wiring board 5 is precisely positioned to the wear plate 1 by fitting a connection hole 5a of the wiring board 5 to the supporting pin 21. Furthermore, the wiring board 5 is prevented from being pulled out of a conveyor operation auxiliary jig while it is being carried by bringing the keep plate 22 in to elastic contact with an upper end of the supporting pin 21 with the contact hole 5a of the wiring board 5 fit in the supporting pin 21.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary jig used for carrying thin printed wiring boards.

0002

[Prior Art] Operations such as etching, plating, pickling, honing, washing, drying, etc. for manufacturing printed wiring boards are performed without damaging the printed wiring boards, and evenly applying the processing agent to the printed wiring boards. This is carried out while being transported by a roller conveyor that can feed the surface.

For example, the roller conveyor shown in FIG.
As shown in the figure, a conveyor C is used in which conveyor rollers 6d and 6p facing each other across the conveyance line PL are arranged at appropriate intervals in the conveyance direction, and while the printed wiring board 15 is conveyed by this conveyor C, The treatment is performed by spraying a treatment agent onto both sides of the printed wiring board 15 from spray nozzles S arranged to face each other with the line PL in between.

0004

[Problem to be solved by the invention] However, in recent years, printed wiring boards have become thinner, and the board thickness has become 0.6 m.
In the case of a thin printed wiring board 5 having a size of less than m, as shown in FIG.
It has been found that accidents frequently occur in which the paper deviates from L and flies out to the outside of the transport rollers 6d and 6p, or even gets wrapped around the transport rollers 6d and 6p, making transport impossible.

[0005] The reason for such an accident is that the thickness of the thin printed wiring board 5 is too thin and the base material is not stiff, so the tip wetted with the processing agent tends to sag downward due to its own weight. This is caused by the bending due to the spray pressure P of the processing agent due to uneven spray pressure P on the front and back surfaces and misalignment of the spray nozzle S. Therefore, in order to prevent such accidents, the spray pressure P of the processing agent may be lowered to make it difficult for the thin printed wiring board 5 to bend, or the conveyance speed may be slowed to prevent the bent thin printed wiring board 5 from being bent. An attempt was made to make it easier to restore the flat plate shape due to elasticity, but in this case, the processing efficiency was significantly reduced, and the thin printed wiring board 5 was transported due to misalignment of the transport rollers 6d and 6p. Deviation from line PL or conveyance roller 6
Wrapping around d or 6p cannot be prevented. Moreover,
It has been found that when the plate thickness is about 0.1 mm, the stiffness becomes even weaker, and even if the spray pressure P is lowered, these accidents cannot be prevented.

[0006]Also, a method of narrowing the distance between the transport rollers 6d and 6p in the transport direction, that is, the roller pitch, has been considered, but this method requires modification of existing equipment and also reduces the number of transport rollers 6d and 6p. It is impractical and cannot be adopted because it becomes huge and the equipment cost increases significantly. Taking these results into consideration, next, as shown in FIG.・Db・
An attempt was made to link Dc. These conveyor work auxiliary jigs Da, Db, and Dc are formed to be wider than the width of the thin printed wiring board 5, and are provided with conveyor rollers 6d and 6.
The receiving plate 11 is formed to be longer than the interval in the conveying direction of the thin printed wiring board 5, and the edge of the thin printed wiring board 5 on the conveying destination side is shown in FIG. As shown in FIG. 6(b), the substrate connecting means 32 made of an elastic plate and the receiving plate 11 may be bonded together with an adhesive 12, or connected with a plurality of screws 22 as shown in FIG. 6(c). It is configured to be held between the

The receiving plate 11 is made of a highly rigid material such as a metal plate having a thickness of about 1 mm or more, so that the receiving plate 11 has a thickness of 0.
．． As with printed wiring boards larger than 6mm, the conveyor line P
The thin printed wiring board 5 is transported on the transport line PL while being pulled by the thin printed wiring board 5. However, attaching the thin printed wiring board 5 to the receiving plate 11 with the adhesive 12 and peeling off the thin printed wiring board 5 bonded with the adhesive 12 from the receiving plate 11 requires a considerable amount of effort, and furthermore, the conveyor The thin printed wiring board 5 may peel off from the receiving plate 11 due to the effect of the processing agent used in the work. In addition, when connecting the thin printed wiring board 5 to the receiving plate 11 with a plurality of screws 22, it is troublesome to screw in and unthread the plurality of screws 22, and Since a large amount of time is required for screwing and screwing, production efficiency is significantly reduced. The thin printed wiring board 5 is connected to the board connecting means 3
2 and the receiving plate 11, the thin printed wiring board 5 can be easily attached and detached from the conveyor work auxiliary jig 32 in a short time. The thin printed wiring board 5 may be pulled out from between the board connecting means 32 and the receiving plate 11, and the base material of the thin printed wiring board 5 may be cracked at that time, which is not practical.

The present invention has been made in view of the above-mentioned circumstances, and it is an object of the present invention to enable a thin printed wiring board to be attached and detached easily and in a short time, and to ensure that the thin printed wiring board can be transported by a conveyor. The purpose of the present invention is to provide a conveyor work auxiliary jig for thin printed wiring boards.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the thin printed wiring board conveyor work auxiliary jig according to the present invention has conveyor rollers 6d facing each other, as shown in FIGS. 1 and 2, for example.・In a conveyor work auxiliary jig for the thin printed wiring board 5 that is transported by the conveyor C in which the rollers 6p are arranged at appropriate intervals in the transport direction, a receiver formed longer than the interval in the transport direction between the transport rollers 6d and 6p is used. The substrate connecting means 2 is provided at the rear end of the receiving plate 1 at an appropriate interval in the width direction. A connecting hole 5 is formed on one side 1a at the edge of the thin printed wiring board 5 on the destination side.
The support pin 21 is provided in a protruding manner corresponding to the direction a, and the holding plate 22 has one end fixed to the surface 1a of the rear end of the conveyance and the other end elastically contacts the upper end of the support pin 21. We are taking measures.

0010

[Operation] In the present invention, by elastically deforming the holding plate 22 and lifting the other end above the support pins 21, the thin printed wiring board 5 can be easily and quickly supported with the holding plate 22. It can be inserted between the pin 21 and the receiving plate 1, or pulled out from between the holding plate 22, the support pin 21, and the receiving plate 1. Further, by fitting the connecting holes 5a of the thin printed wiring board 5 into the support pins 21, the thin printed wiring board 5 can be accurately positioned with respect to the receiving plate 1. Furthermore, the connection hole 5 of the thin printed wiring board 5
By bringing the presser plate 22 into elastic contact with the upper end of the support pin 21 while a is fitted into the support pin 21, the thin printed wiring board 5 is reliably prevented from being pulled out from the conveyor work auxiliary jig during conveyance. can.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A conveyor work auxiliary jig for thin printed wiring boards according to an embodiment of the present invention will be explained in detail below with reference to FIGS. 1 to 3. As shown in FIG.
The thin printed wiring board 5 is conveyed by a conveyor C that is connected to the end edge (on the arrowhead side of arrow A in the figure) and has conveyor rollers 6d and 6p facing each other across the conveyance line PL and arranged at appropriate intervals in the conveyance direction. They are carried as if they were leading the way.

This conveyor work auxiliary jig D is formed to be wider than the width of the thin printed wiring board 5 (for example, 500 mm) and longer than the interval between the conveyor rollers 6d and 6p in the conveyance direction (for example, 150 mm). received plate 1
and three board connecting means 2 provided at the rear end of the receiving plate 1 at appropriate equal intervals in the width direction. Each board connecting means 2 includes support pins 21 which are protrudingly provided at the end of one surface 1a of the receiving plate 1 on the transport side in correspondence with connection holes 5a formed at the end of the thin printed wiring board 5 on the transport destination side. is formed of an elastic member, one end is fixed to the rear end of the surface 1a of the receiving plate 1 by spot welding, for example, and the other end is in elastic contact with the upper end of the support pin 21 via the presser pin 23. The press plate 22, the other end of the press plate 22, and one side 1 of the receiving plate 1
It is provided with an interposer 24 inserted between the a. The distance between one surface 1a of the receiving plate 1 and the holding plate 22 is set to about 0.3 to 1 mm, corresponding to the thickness of the thin printed wiring board 5 to be connected, and the total height of the conveyor work auxiliary jig D is The clearance needs to be smaller than the minimum clearance between a device used for conveyor work, such as a drying device, and the conveyance line PL, and in this embodiment, it is set to 3.2 mm or less.

[0013] The receiving plate 1, the support pin 21, the holding plate 22,
The materials of the presser pin 23 and the intervening material 24 must have high durability against the processing materials used in conveyor work, that is, corrosion resistance, acid resistance, alkali resistance, chemical resistance, abrasion resistance, etc. It is preferable to include stainless steel, titanium alloy, etc., as examples. Among these materials, stainless steel has a problem with corrosion resistance against chlorine-based etching solutions, but titanium alloys have been confirmed to have sufficient corrosion resistance against chlorine-based etching solutions.

The area to be treated on both sides of the thin printed wiring board 5 is made as large as possible, and the receiving plate 1 and the holding plate 2 are
2 and the thin printed wiring board 5, the area where the receiving plate 1 and the holding plate 22 overlap with the thin printed wiring board 5 connected thereto is made as small as possible. It is preferable. For this reason,
In this embodiment, the width of the presser plate 22 is, for example, the width of the support pin 21.
and approximately twice the diameter of the presser pin 23, so that only the portion of the rear end of the receiving plate 1 corresponding to the other half of the presser plate 22 extends toward the rear side of the conveyor. A support pin 21 is provided at the protrusion.

Further, the processing agent adhering to the receiving plate 1 is pushed by the rollers 6d and 6p to the edge of the thin printed wiring board 5 on the destination side during transportation, and the processing agent is deposited on the edge of the destination side of the thin printed wiring board 5. This will lead to an oversupply of. In order to prevent this excessive supply, it is preferable to make it difficult for the processing agent to remain on the receiving plate 1. Furthermore, in order to reduce the load on the conveyor C, it is preferable to reduce the weight of the conveyor work assisting jig D. In this embodiment, in order to reduce the amount of processing agent remaining on the receiving plate 1 and to reduce the weight of the conveyor work auxiliary jig D, a large number of escape holes 4 are formed in the receiving plate 1 as shown in FIG. are doing.

In this conveyor work auxiliary jig D,
The thin printed wiring board 5 can be easily and In a short time, presser plate 2
2 and between the support pin 21 and the receiving plate 1, and fit the connection hole 5a of the thin printed wiring board 5 into the support pin 21, or insert the connection hole 5a of the thin printed wiring board 5 from the support pin 21 into the connection hole 5a of the thin printed wiring board 5.
Since the thin printed wiring board 5 can be pulled out from between the holding plate 22, the support pin 21, and the receiving plate 1 by removing the holding plate 22, the thin printed wiring board 5 can be easily attached and detached in a short time. Further, by fitting the connecting holes 5a of the thin printed wiring board 5 into the support pins 21, the thin printed wiring board 5 can be accurately positioned with respect to the receiving plate 1. Furthermore, the connection hole 5a of the thin printed wiring board 5 is connected to the support pin 21.
By bringing the presser plate 22 into elastic contact with the upper end of the support pin 21 while the thin printed wiring board 5 is being fitted into the conveyor work auxiliary jig D, it is possible to reliably prevent the thin printed wiring board 5 from being pulled out from the conveyor work auxiliary jig D during conveyance. Thin printed wiring boards can be transported using a conveyor.

[0017]

As described above, according to the present invention, by lifting the tip of the holding plate and lifting the other end above the support pin, thin printed wiring can be easily and quickly achieved. The plate can be supported on or removed from the board coupling means. In addition, since the support pins fixed to the receiving plate are fitted into the connecting holes provided in the thin printed wiring board, it is possible to reliably prevent the thin printed wiring board from being pulled out of the conveyor work aid jig during transportation. It becomes possible to transport thin printed wiring boards on a conveyor.

Furthermore, in the present invention, in particular, when a relief hole is formed in the receiving plate passing through it in the thickness direction, the amount of processing agent remaining on the receiving plate can be reduced, and It is possible to alleviate contamination, prevent excessive supply of processing agent to the edge of the thin printed wiring board on the conveyance side, and reduce the load on the conveyor by reducing the weight of the conveyor work aid jig. Can be done.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional side view of an embodiment of the present invention.

FIG. 2 is a plan view of an embodiment of the present invention.

FIG. 3 is a configuration diagram of a conveyor that conveys an embodiment of the present invention.

FIG. 4 is a configuration diagram of a conventional conveyor.

FIG. 5 is a schematic diagram of an example of an accident in a conventional conveyor.

FIG. 6 is a vertical side view of a conventional conveyor work aid jig.

[Explanation of symbols]

1　　　　Brace plate 1a　One side 2　　　　　Board connection means 4 Escape hole 5 Thin printed wiring board 5a Connecting hole 6d Conveyance roller 6p Conveyance roller 21 Support pin 22 Presser plate C Conveyor

Claims (2)

[Claims] [Claim 1] Conveyance rollers (6d) facing each other.
In the conveyor work auxiliary jig for thin printed wiring boards (5) conveyed by a conveyor (C) in which thin printed wiring boards (6p) are arranged at appropriate intervals in the conveyance direction, the conveyor rollers (6d
)・(6p) A receiving plate (1) formed longer than the interval in the conveying direction, and a board connection provided at an end on the rear side of the conveying side of the receiving plate (1) with an appropriate interval in the width direction. Means (2)
The board connecting means (2) has a connecting hole (1a) formed on one surface (1a) of the rear end of the receiving plate (1) at the end of the thin printed wiring board (5) on the transport destination side. a support pin (21) protruding in correspondence with 5a), and a presser whose one end is fixed to one surface (1a) of the rear end of the conveyance and whose other end is in elastic contact with the upper end of the support pin (21). A thin printed wiring board conveyor work auxiliary jig, comprising: a plate (22). 2. The thin printed wiring board conveyor work aid jig according to claim 1, wherein the receiving plate (1) is provided with an escape hole (4) passing through it in the thickness direction.