JP2005317731A - Conveyor for conveying and processing apparatus for printed wiring board and copper clad laminate board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device capable of horizontally conveying, washing, or chemically processing a thin leaf type printed wiring board or copper clad laminate board with ease while preventing any trouble accompanied by horizontal conveyance, washing, or chemical processing of the thin leaf type printed wiring board or copper clad laminate board. <P>SOLUTION: A conveyor for a washing device and a chemical processing device, horizontally conveys the thin leaf type printed wiring board or copper clad laminate board or atomize liquid simultaneously the horizontal conveyance. In a conveyor device, and the washing device and chemical processing device for the printed wiring board or copper clad laminate board with a conveyor, the printed wiring board or copper clad laminate plate is conveyed while having both its side in its traveling direction fixed by continuous beltlike rotary supports from above and below. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a horizontal conveyance conveyor device and a cleaning or chemical treatment device for a thin-leaf printed wiring board or a copper clad laminate.

  Cleaning and chemical treatment equipment that sprays and sprays liquid from the top and bottom simultaneously with horizontal conveyance of printed wiring boards or copper-clad laminates, and rolls with shafts passing through multiple circular or polygonal conveyor wheels Mainstream. In the case of horizontal conveyance, cleaning, or chemical treatment of a thin-leaf printed wiring board or copper clad laminate having a substrate thickness of 0.10 mm or less, further 0.06 mm or less, the printed wiring board or copper clad laminate is sprayed. Problems such as falling between the conveyor wheels, being caught, or being broken due to being covered. In order to prevent such falling and getting caught between conveyor wheels, a device in which the diameter of the conveyor wheel is larger than the wheel interval or a device using a specially shaped wheel has been devised.

  In a cleaning device or chemical processing device that uses a circular or polygonal star-shaped conveyor wheel to horizontally convey a printed wiring board or copper-clad laminate, or spray liquid from the top and bottom simultaneously with the horizontal conveyance, the structure of the device is It has the advantage of being simple, easy to design and manufacture, and inexpensive, but it can be used for horizontal transfer, cleaning, or chemical treatment of thin-leaf printed wiring boards or copper clad laminates. It is unsuitable because it causes quality deterioration.

  In addition, in order to prevent the thin printed wiring board or copper-clad laminate from falling or being caught between conveyor wheels, the conveyor wheel diameter is larger than the wheel interval or the conveyor wheel is improved to a special shape. However, in horizontal transport, cleaning, or chemical treatment of thin-leaf printed wiring boards or copper clad laminates of 0.06 mm or less, there is no drop or entanglement between conveyor wheels, resulting in reduced yields and defective products. If the distance between the wheels is further narrowed, the cleaning liquid and the processing liquid are blocked by the wheel, causing problems such as insufficient cleaning, insufficient processing, and spots.

  The present invention eliminates these problems, prevents problems associated with horizontal conveyance, cleaning or chemical treatment of thin-leaf printed wiring boards or copper-clad laminates, and facilitates thin-leaf printed wiring boards or copper-clad laminates. An object is to provide an apparatus capable of horizontal conveyance, cleaning or chemical treatment.

  The present invention relates to a printed wiring board or a copper-clad laminate in a cleaning device or a chemical treatment device conveyor that sprays a liquid from the top and bottom simultaneously with horizontal conveyance of a thin printed wiring board or copper-clad laminate. A conveyor device characterized in that both sides of the direction are fixed by being sandwiched from above and below by a continuous belt-like rotating support, and a printed wiring board or copper clad laminate cleaning device and chemical treatment having the conveyor Relates to the device.

  With the conveyor wheel according to the present invention, even in a thin printed wiring board or copper-clad laminate with a thickness of 0.06 mm, there is no problem such as folding or catching, horizontal transport or cleaning that sprays liquid simultaneously with horizontal transport, chemical treatment It becomes possible to do.

The present invention will be described in further detail.
According to the present invention, in conveying a thin printed wiring board or copper clad laminate, both sides of the printed wiring board or copper clad laminate traveling direction are sandwiched and fixed from above and below by a continuous belt-like rotating support. Therefore, the conveyor wheel is not required, and it is possible to prevent falling and being caught between the conveyor wheels.

  In the present invention, the material of the belt-like rotary support is arbitrary, such as a plastic chain or a metal chain, but is preferably made of rubber for preventing scratches on the printed wiring board or the copper-clad laminate. The width of the rotating support is 10 to 50 mm, preferably 20 to 30 mm, and the diameter of the rotating shaft that supports the rotating support is 10 to 50 mm, preferably 20 to 30 mm. The material thereof is arbitrary such as plastic and metal. The unit length of the belt-like rotary support is arbitrary, and is most preferably the length extending over the entire length of the apparatus, but it is desirable to set the unit length to 3 to 10 m in consideration of ease of adjustment. Further, the belt-like rotating support is provided with projections arranged at equal intervals on the surface in contact with the printed wiring board or the copper clad laminate, thereby increasing the fixing force of the printed wiring board or the copper clad laminate, It becomes possible to further prevent the displacement of the copper-clad laminate.

  As shown in FIG. 1, a thin printed wiring board or copper-clad laminate is obtained by fixing and transporting both sides of the printed wiring board or copper-clad laminate in the direction of travel with a continuous belt-like rotating support from above and below. It is possible to prevent the plate from falling and being caught between the conveyor wheels.

The following examples illustrate the invention.
Example 1

Etching a glass epoxy substrate double-sided copper-clad laminate “MCL-E-67” (trade name, manufactured by Hitachi Chemical Co., Ltd.) having a size of 500 mm × 500 mm, a substrate thickness of 0.06 mm, and a copper foil thickness of 18 μm A sample plate was prepared by removing 50% of the copper foil area.
The plate was sandwiched and conveyed from above and below by a rubber flat belt-like rotary supporter having a width of 20 mm and driven by a plastic rotary shaft having a diameter of 30 mm and having the shape shown in FIGS. The unit length of the belt-like rotating support was 3 m, and it was attached to a horizontal conveyance washing machine having a tank length of 3 m, and was sprayed with water at a pressure of 0.1 MPa from the top and bottom, and washed at a rate of 1.5 m / min.
The presence or absence of stumbling during transportation, the presence or absence of tripping, and the appearance of the sample plate after the treatment were observed to visually evaluate the presence or absence of folding. Table 1 shows. The number of sample plates was 50.
Example 2

On the surface of the device shown in Example 1 that contacts the double-sided copper-clad laminate of the belt-like rotary support, a conical protrusion having a diameter of 3 mm and a height of 2 mm shown in FIG. Evaluation was performed in the same manner as in Example 1.
Comparative Example 1

  The conveyance wheel of the shape shown in FIG. 4 was made into the conveyance roll through the shaft with the conveyance horizontal direction pitch of 60 mm. The outer diameter of the wheel is 40 mm, the height of the star projection is 2 mm, and the wheel is attached to a horizontal conveyance washing machine with a pitch of 50 mm in the conveyance direction and a tank length of 3 m, and sprayed with water at a pressure of 0.1 MPa from above and below. Washing was performed at a speed of 5 m / min, and the same sample plate as in Example 1 was evaluated in the same manner as in Example 1.

It is a schematic explanatory drawing of the conveying apparatus by this invention. It is the top view and side view of Example 1 by this invention. It is the top view and side view of Example 2 by this invention. It is a schematic explanatory drawing of the conveying apparatus by the conventional wheel, and the comparative example 1. FIG.

Explanation of symbols

1: printed wiring board or copper-clad laminate 2: strip-shaped rotating support 3: rotating shaft 4 of rotating support: spray 5: protrusion 6 evenly arranged on the strip-shaped rotating support 6: roll shaft 7: wheel

Claims (2)

In the conveyor of the horizontal processing of the thin printed wiring board or copper clad laminate, or spraying the liquid simultaneously with the horizontal transport, in the conveyor of the chemical processing apparatus, both sides of the printed wiring board or the copper clad laminate traveling direction, A conveyor device, which is fixed by being sandwiched from above and below by a continuous belt-like rotating support and transported. A cleaning device and a chemical processing device for a printed wiring board or a copper clad laminate having the conveyor according to claim 1.

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