JPH08323270A - Washing apparatus - Google Patents

Abstract

PURPOSE: To continuously process washing, etching, washing, etc., on the end part of a sheet by carrying a rectangular sheet while it is stood up and etching or washing the end part of one side of this sheet when it is passed through a conduit-like reservoir provided at the lower end of a carrying means. CONSTITUTION: A sheet 12 is placed between a shaft and a collar or a disc 5 on a carrying machine for perpendicular placing and one side of the sheet 12 is placed on a roll 4 for fixing the lower end position provided in a washing tank 2 to carry it. Namely, the shaft and the collar or the disc 5 pinch the sheet 12 by means of a pair of rolls and the sheet 12 is carried by rotating the rolls consisting of the shaft, the collar or the disc 5 In this case, the distance between the top end of the washing tank 2 and the uppermost end of the roll for fixing the lower end position is made to be the width being washable from the lower end of the sheet 12 and a washing liq. is always fed into the washing tank 2 and overflows out in a liq. reservoir. The liq. face of the washing liq. is thereby always kept const. and the width of the region for washing the sheet 12 is always kept const.

Description

Detailed Description of the Invention

[0001]

[Industrial application] In the field of electronic parts processing where an insulating layer or conductive layer is formed on a plate such as a liquid crystal substrate, a printed wiring board, a glass plate, a plastics plate or a ceramic plate, one side of the plate is continuously etched. Or, it relates to a cleaning device capable of cleaning.

[0002]

2. Description of the Related Art Conventionally, as a method of conveying each leaf of a plate material,
There are a method of conveying by grasping one side and hanging it down, a method of horizontally placing on a belt, and a method of arranging rolls and horizontally conveying on them. In that case, when cleaning at least one of the four sides of the plate material, or when removing the metal layer formed on the plate material by etching or cleaning dirt such as attached oils, the portion not to be cleaned or etched is covered with a masking tape or masking. It was covered with a sheet to prevent adhesion of cleaning liquid and etching liquid. Further, when ink or paint is applied to at least one surface of the plate material by newly applying it, there is a case where an uncoated portion of several millimeters to several tens of millimeters from the end of at least one side of the plate material is required as a work area. In such a case, cover the required part with a masking sheet or masking tape before coating, and then apply ink or paint and peel off the masking sheet or masking tape to dry, or peel off the masking sheet or masking tape after drying. I was doing work such as.

In particular, in the manufacture of printed wiring boards, electroless copper plating and electrolytic plating are carried out in the sense that a hole penetrating the front and back is made and a conductive layer is further provided in the through hole. When this electroless plating or electrolytic plating is performed, burrs are formed by plating on the four side edges of the copper-clad laminate that is the base material. After that, this burr has a problem that it may be peeled off due to printing or exposure work at the time of pattern formation to cause an image forming defect, so that work such as polishing the four sides with abrasive paper or a grindstone to remove the burr has been performed. However, in recent years, the copper-clad laminate serving as a base material has become thin, and it has become difficult to perform such polishing.

Alternatively, when an image is formed on the inner layer of the multi-layer laminate or on one side or both sides of the multi-layer laminate or the surface layer of the multi-layer laminate,
In addition to forming an image by screen printing, a liquid photosensitive resin composition is applied by a dry film or a photosensitive resin, a photopolymerization initiator, a solvent such as an organic solvent or water, and dried to form a photosensitive resin coating layer. In this case, a strip-shaped area where the photosensitive resin coating layer is not formed is formed on at least two sides of the copper-clad laminate as the base material, and the identification mark of the base material or the alignment of the negative film and the base material is formed in this area. Pre-form the holes and symbols of
It is necessary not to be covered by the subsequent plating and photosensitive resin layer forming steps.

However, in a process of laminating dry films or applying and drying a liquid photosensitive resin composition in a step of successively laminating or applying plates having different widths and lengths, the photosensitive resin film is accurately applied. It is difficult to form a region where no layer is formed. Therefore, a masking tape or a masking sheet is laminated to form a photosensitive resin coating layer over the entire surface, and the masking tape or masking sheet is peeled off in a later step to provide a region where the photosensitive resin coating layer is not formed. However, when a masking tape or masking sheet is used, there are problems such as generation of waste masking material as a residue and stains on the device.

On the other hand, when working without using a masking tape or masking sheet, it was applied to the surface of the plate and scraped with a knife or the like before or after drying, but this is not necessary by hand. Contamination caused by scraping off the part re-adhered to the plate itself, causing problems. Thus, there has been a demand for an apparatus that automatically treats at least one end portion without physically treating it without generating dust or dirt.

[0007]

DISCLOSURE OF THE INVENTION The present invention is an apparatus for easily confirming a processing state during transportation in each processing step,
It is an object of the present invention to provide an apparatus capable of performing, for example, cleaning, etching, and cleaning steps on an end portion of at least one of the four sides of a plate while being continuously conveyed.

[0008]

That is, the present invention is
(1) Consists of a transport means for transporting a square or rectangular plate while standing upright, and a gutter-shaped liquid pool provided at the lower end of the transport means. Etching or cleaning one edge of the plate while transporting. Is a cleaning device that can
In addition, (2) Square or rectangular plate is
The cleaning device according to (1), wherein the cleaning device is conveyed while being inclined at an angle of up to 90 degrees, and the cleaning liquid at the entrance of the cleaning tank of the cleaning device according to (3), (1) or (2) does not leak, In addition, it has a structure in which a cylindrical curler made by processing a material selected from expanded polyethylene, expanded polystyrene, expanded polyurethane, expanded polypropylene, or soft rubber or soft polyurethane elastomer is wound around a transport roll that can pass through a plate. The present invention relates to a cleaning device using a conveyance roll.

Further, the detailed description will be given with reference to the drawings. In the vertical transfer machine shown in FIG.
2 is sandwiched between a shaft 6 and a curler or disk 5, and one side of the plate is placed on a roll 4 provided in the cleaning tank 2 for fixing the lower end position and conveyed. The shaft 6 and the curler or disc 5
Is a plate 12 with a pair of rolls as shown in FIG. 2 which is a side view.
By inserting the shaft and rotating the shaft 10,
The power is transmitted to the pair of gears 8 and the roll composed of the shaft 6 and the curler or the disk 5 is rotated to convey the plate 12.

The conveyance state of the plate 12 is shown in FIG. 1, which is a front view, and the distance between the upper end of the cleaning tank 2 and the uppermost end of the lower end position fixing roll 4 is a strip-like width which can be cleaned from the lower end of the plate 12. Becomes The cleaning liquid is constantly supplied to the cleaning tank 2, overflows, and flows out to the liquid receiver 1. Therefore, the level of the cleaning liquid is always kept constant, and the width of the cleaning region of the plate 12 is always kept constant.

As shown in FIG. 3, which is a perspective view of the entrance and exit of the cleaning tank 2, the shafts 7 of the two pairs of transport rolls are
The same material as the shaft 6 may be used. However, the curler 3 is preferably foamed polyethylene, foamed polystyrene, foamed polyurethane, foamed polypropylene, soft rubber, soft polyurethane elastomer or the like that is easily deformed by stress.

In the mechanism in which the shafts 7 move relative to each other and open or narrow due to variations in plate thickness, the curler 3 closes when the plate passes and the curler 3 is closed so that a large amount of cleaning liquid in the cleaning tank 2 does not leak. There is a problem that the cleaning liquid is scattered at an instant and the cleaning liquid is attached to a portion of the plate where cleaning is unnecessary.

It is desirable that one of the pair of conveying rolls consisting of the shaft 6 and the curler or the disc 5 other than the inlet and the outlet easily moves in accordance with the plate thickness. Shaft 6
Does not require abrupt movement especially according to the plate thickness. This is possible by making the upper and lower shaft fixing holes oval so that the shaft 6 can move.

It is sufficient that the conveying surface is upright from the horizontal plane,
It is preferably 45 to 90 degrees from the horizontal plane, and more preferably 80 to 90 degrees. If it is less than 45 degrees, the width of the cleaning zone of the cleaned plate is different because the height of the cleaning liquid surface is different between the front and back of the plate. On the other hand, from 90 to 135 degrees, 90 ~
Although there is essentially no difference from 45 degrees, it is not preferable because it becomes difficult to observe the state of the plate that will be the product.

For the cleaning tank 2 and the liquid receiver 1, it is necessary to select a material suitable for the purpose of cleaning. For example, when washing with hot water, sodium hydroxide aqueous solution, sodium carbonate aqueous solution, dilute sulfuric acid, dilute hydrochloric acid, phosphoric acid aqueous solution or oxidizing mineral acid, polyvinyl chloride, epoxy resin alone or general-purpose metal such as iron or aluminum or its It may be coated with an alloy. The shaft 6 or 7 of the transport roll is selected from aluminum, aluminum alloy, etc. when it does not contain chemicals such as stainless steel and hot water. When an oxidizing mineral acid is used, a titanium alloy, or a metal selected from iron, aluminum and aluminum alloys, coated with polyvinyl chloride or the like is suitable.

The curler 5 used for the transfer rolls other than the entrance and the exit may be a general-purpose resin. For example, there are molded products such as polyvinyl chloride, polystyrene, polyethylene, polypropylene, phenol resin, epoxy resin, and melamine resin.

[0017]

The present invention will be further described with reference to examples. [Embodiment 1] A washing machine having a constitution shown in FIG. 1 which is a front view, FIG. 2 which is a side view and FIG. 3 which is a perspective view is prepared. Body 1
1, liquid receiver 1, transport roll shafts 6 and 7, cleaning tank 2,
A roll 4 for receiving one side of the lower end and smoothly moving it was made of stainless steel. A urethane foam was used for the curler 3 used for the entrance and exit conveyance rolls. The curler 5 used for the other transport rolls was made of polyethylene. From the center of the bottom of the washing tank 2, a 2 wt% aqueous sodium hydroxide solution was heated to 40 ° C. in a preliminary tank and a washing solution was supplied by a pump. The cleaning liquid overflowing the cleaning tank 2 spilled on the liquid receiver 1 and was returned to the sodium hydroxide aqueous solution preparatory tank through the liquid discharge holes provided at two places on the bottom of the liquid receiver 1. At this time, the distance between the liquid surface and the upper end of the roll 4 in the washing tank was set to 10 mm. In addition, in order to improve the cleaning effect, 25
Ultrasonic waves of KHz were applied to vibrate the cleaning liquid and the cleaning product.

Next, a 0.1 mm-thick plate was coated with the alkali-developing liquid photosensitive resin composition on the entire surface of the plate, and the solvent contained therein was dried at 80 ° C. for 40 minutes. The dried photosensitive resin composition film has a thickness of 20 μm on both sides of the center of the plate, and one side edge of the plate has a liquid photosensitive resin composition accumulated during the drying process and thus has a thickness of 1 μm on both sides.
The thickness was 50 μm. While soaking the one side edge where the 150 μm photosensitive resin composition film is formed in the cleaning tank 2, FIG.
I let it pass. The length of stay was 2 minutes. As a result of observing the passed plate, the alkali-developable photosensitive resin composition film adhered by 150 μm was peeled off, and no residue could be confirmed. Moreover, the peeling width of the photosensitive resin composition film from the edge of the plate was 10 to 12 mm.

[Embodiment 2] A washing machine having a structure shown in FIG. 1 which is a front view, FIG. 2 which is a side view and FIG. 3 which is a perspective view is prepared. The skeleton 11 and the liquid receiver 1, the transfer roll shafts 6 and 7, the cleaning tank 2, and the roll 4 for receiving and smoothly moving the lower end 1 side were made of a material in which aluminum was coated with polyvinyl chloride. A urethane foam was used for the curler 3 used for the entrance and exit conveyance rolls. The curler 6 used for the other transport rolls was made of polyethylene.

From the bottom center of the washing tank 2, 80% by weight of a 20% by weight cupric chloride aqueous solution, 37% hydrochloric acid by 10% by weight hydrochloric acid and 2% by weight.
A cleaning liquid obtained by heating 10% by weight of 8% hydrogen peroxide solution to 40 ° C. in a pre-etching bath was supplied by a pump. The cleaning liquid overflowing the cleaning tank 2 spilled on the liquid receiver 1 and was returned to the etching liquid preparatory tank through the liquid discharge holes provided at two places on the bottom of the liquid receiver 1. At this time, the distance between the liquid surface and the upper end of the roll 4 in the washing tank was set to 2 mm.

Next, a copper-clad laminate having a thickness of 0.1 mm and 18 μm of copper was placed on the copper-clad laminate with 3 μm of electroless copper and 25 μm.
Electroplated with copper. Burrs are generated at the four side edges of the plate due to plating. One of the four sides was passed through as shown in FIG. 1 while being immersed in a washing tank. The stay time was 3 minutes.
As a result of observing the passed plate, one side of both sides of the plate is 2 to 4
Copper was etched in a width of mm, and copper burr generated by plating disappeared.

[0022]

Industrial Applicability The cleaning apparatus of the present invention can be easily connected to a production line, and the photosensitive resin composition film and the cleaning liquid as needed can be continuously selected from one side edge of the plate with an arbitrary width. By doing so, it is possible to supply an apparatus capable of removing ink, paint, oil and fat, or metal.

[Brief description of drawings]

FIG. 1 is a front view showing an example of an apparatus of the present invention.

FIG. 2 is a side view showing an example of the device of the present invention.

FIG. 3 is a perspective view showing the vicinity of an inlet and an outlet of a washing tank of the device of the present invention.

[Explanation of symbols]

1 Liquid receiving tank 2 Washing tank 3 Soft curler used for entrance and exit 4 Roll for fixing the lower end position to smooth the leaning conveyance of plates 5 Curlers for rolls other than entrance and exit Curlers for rolls 6 Other than entrance and exit Shaft for transmitting the power of 7 The shaft for transmitting power used for the entrance and the exit 8 Gear for transmitting power to the shaft for each transport roll 9 Gear for transmitting power from the shaft 10 to the gear associated with each transport roll 10 Motor etc. Shaft that transmits power from the power source of the body 11 Body of the body 12 Plate

Claims (3)

[Claims] 1. A square or rectangular plate is constituted by a conveying means for conveying the plate while standing upright, and a gutter-shaped liquid pool provided at a lower end of the conveying means, and one side end portion of the plate is etched while being conveyed. Or a cleaning device that can be cleaned. 2. A square or rectangular plate is placed on a horizontal plane 4
The cleaning device according to claim 1, wherein the cleaning device is conveyed while being inclined at 5 to 90 degrees. 3. A transfer roll that does not leak the cleaning liquid at the inlet of the cleaning tank of the cleaning device according to claim 1 or is capable of passing a plate, is made of expanded polyethylene, expanded polystyrene, expanded polyurethane, expanded polypropylene, or a soft material. Rubber,
A cleaning device using a transport roll, which has a structure in which a cylindrical curler made by processing a material selected from a soft polyurethane elastomer is wound.