JPH06211328A - Conveyer device for double-coated printed wiring board - Google Patents

Abstract

PURPOSE:To provide a conveyer device whereby a printed wiring board can be conveyed without coming into contact with a liquid-state object applied to both sides of the printed wiring board. CONSTITUTION:In a conveyer device suited for conveying a printed wiring board 12 of applying a liquid-state object to its both sides, the device is constituted by separating the first/second drive roller rows 16, 18, constituted of a plurality of drive rollers 14, from each other by a predetermined distance and also by setting up these first/second drive roller rows 16, 18 tilted in almost V-shape so that sides opposed to each other of the first/second drive roller rows 16, 18 are arranged near.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor device for a double-sided coated printed wiring board. The double-sided coated printed wiring board conveyor device is a transportation device that prints or applies a liquid substance such as ink or a photosensitizer on both sides of the printed wiring board and conveys it in an uncured state, such as a drying furnace or an exposure device. It is used for automatic loading into a surface treatment machine, or for a transport section such as a drying furnace, etching device, and developing machine.

When a liquid substance such as ink or a photosensitizer is printed or applied on both sides of a printed wiring board and then conveyed to a drying oven, an exposure device or the like, it is necessary to convey without contacting the surface. This is because if a roll or the like should come into contact with the surface, the uncured surface that has been printed or applied will be damaged.

[0003]

2. Description of the Related Art At present, the following conveyors and the like are used as a conveyor for printed wiring boards.

(1) A roller conveyer device for rotating horizontally arranged rollers to convey a printed wiring board. (2) A belt conveyor device for rotating and driving an endless belt to convey a printed wiring board.

(3) A traverser in which an end face of the printed wiring board 2 is held by a holding member 4 as shown in FIG.
The holding member 4 is attached to the support member 3 so as to be movable in the arrow direction, and the support member 3 is movable in the vertical direction by the cylinder 5. Further, the cylinder 5 is moved laterally along the guide member 6.

(4) A suction pad type handling device as shown in FIG. 21 (B) which sucks the printed wiring board 2 by the suction pad 8 and conveys it. The suction pad 8 is attached to a lateral member 7 which is vertically movable by a cylinder 9, and the cylinder 9 is attached to an arm 10 which is rotationally movable.

[0007]

If a printed wiring board coated with a liquid material on both sides is conveyed by a roller conveyor device or a belt conveyor device, the ink or paint applied to the lower surface of the printed wiring board will be damaged. Therefore, when it is necessary to convey the printed wiring board in a state where the photosensitizer applied by these conveyor devices is uncured, first the ink or the photosensitizer is printed or applied on one side and the necessary treatment is performed. After that, it was necessary to reverse the printed wiring board and perform the same treatment on the other side.

Further, although the above-mentioned traverser moves the printed wiring board while sandwiching the end of the printed wiring board, there are many restrictions such as stability and a small moving distance. Since it is necessary to use a roller conveyor device, a belt conveyor device, or the like to convey the printed wiring board to the traverser, this traverser is not suitable for use in conveying the double-sided coated printed wiring board as a practical problem.

Further, in the above-mentioned suction pad type handling device, the printed wiring board is sucked and conveyed by the suction pad, and therefore it is necessary to increase the area of the suction portion in order to improve stability. Since paint or the like cannot be applied to the adsorption portion, widening the adsorption portion reduces the effective manufacturing area. Further, since such a suction pad type handling device sucks the upper surface of the printed wiring board, it is not suitable for carrying the double-sided coated printed wiring board.

The present invention has been made in view of the above points, and an object of the present invention is to convey a printed wiring board having a liquid material such as ink or paint applied on both sides thereof. It is to provide a device.

[0011]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention is a conveyor device suitable for carrying a printed wiring board coated with a liquid material on both sides, and comprising a plurality of drive rolls. A first drive roll row and a second
While separating the drive roll row from each other by a predetermined distance,
A conveyor for double-sided coated printed wiring board, characterized in that the first and second drive roll rows are installed so as to be inclined in a substantially V shape so that opposite sides of the first and second drive roll rows are lowered. Provide a device.

The first drive roll row and the second drive roll row may be composed of tapered drive rolls, and each tapered drive roll may be installed so that the smaller diameter is on the inside.

Further, according to another aspect of the present invention, the pair of drive belts are separated from each other by a predetermined distance, and the pair of drive belts are installed so as to be inclined in a substantially V-shape so that the opposite sides are lowered. A double-sided coated printed wiring board conveyor device is provided.

[0014]

When the printed wiring board is placed on the first and second drive roll rows that are installed so as to be inclined in a substantially V-shape in a nearly horizontal state, only the end face of the printed wiring board is held in contact with the drive roll. Since the liquid material application surface does not come into contact with the driving roll, the printed wiring board having the liquid material applied on both sides can be conveyed without damaging the applied liquid material.

Even in a conveyer device in which a pair of drive belts are tilted in a substantially V shape, the printed wiring board is held in contact with the drive belts only at the end faces, and the coating surface does not contact the drive belts. It is possible to convey a printed wiring board having a liquid material coated on both sides without damaging the substrate.

In the roller conveyor device or the belt conveyor device of the present invention, even if the width of the printed wiring board to be conveyed is changed, it can be conveyed within the effective range of the conveyor.

[0017]

Embodiments of the present invention will now be described in detail with reference to the drawings. Referring to FIG. 1, there is shown a vertical sectional view of an embodiment of the present invention. Reference numeral 16 is a first drive roll row (transport roll row) composed of a plurality of drive rolls (transport rolls) 14, and 18 is a second drive roll row (also a plurality of drive rolls (transport rolls) 14). It is a conveyance roll row). The first drive roll row 16 and the second drive roll row 18 are separated from each other by a predetermined distance, and are installed so as to be inclined in a substantially V shape so that the sides facing each other are lowered.

A pressing roll 20 is provided so as to face each drive roll 14, and a long wipe cloth 22 is pressed against the drive roll 14 by this press roll 20. As shown in FIG. 9, the wiping cloth 22 is wound around the delivery roll 24 and the winding roll 50. Two
Reference numeral 6 is a tension roll for applying an appropriate tension to the wiping cloth 22.

The printed wiring board 12 is placed on the first and second drive roll rows 16 and 18 and conveyed in a substantially horizontal state. As best shown in FIG. 4, a position correction rod 28 that corrects the position of the printed wiring board is inserted between the adjacent drive rolls 14.
8 is movable in the axial direction of the drive roll 14 along a parallel moving rail 30 installed parallel to the drive roll 14.

As shown in FIG. 2 (A), even if the width of the printed wiring board is changed such as the wide printed wiring board 12a and the narrow printed wiring board 12b, if the width of the printed wiring board is within the effective range of the conveyor, printing is performed. The wiring boards 12a and 12b are held only by the contact of their end faces, and the upper and lower coating surfaces are the drive roll 1
No contact with 4.

Further, as shown in FIG. 2B, the printed wiring board 12 can be held while being inclined to some extent and transported. As shown in FIG. 3, if the installation angle of the drive roll 14 can be changed, the conveyance level of the printed wiring board 12 to be conveyed can be adjusted within a predetermined range.

Next, referring to FIG. 4, the position correction rod 28
The position correction operation of the printed wiring board by means of will be described. First, as shown in FIG. 4 (A), the printed wiring board 12 enters while the position correction rod 28 is open, and the conveyance of the printed wiring board is stopped. Next, as shown in FIG. 4 (B), the left and right position correction rods 28 simultaneously move in the directions toward each other. As a result, the misalignment of the displaced printed wiring board 12 to the central portion is started, and at the end of the misalignment shown in FIG. 4C, the printed wiring board 12 and the position correction rod 28 are stopped at the center distribution position.

Next, as shown in FIG. 4 (D), the stopped position correcting rod 28 is opened to the left and right, and the drive roll 14 is opened.
Is driven to send out the printed wiring board 12. In the above description of the correction operation, the driving of the conveyor is stopped and the position correction operation of the printed wiring board is performed. However, when the conveyor speed is low, the position correction operation of the printed wiring board can be performed while the conveyor is driven. It is possible.

Next, with reference to FIGS. 5 and 6, a concrete example of the substrate position correction control will be described. The correction control of this embodiment first reads the position of the printed wiring board,
The correction operation is determined, and the position correction rod 28 is moved to perform the correction.

That is, as shown in FIG. 5 (A), a plurality of sensors 32 arranged at the center of the conveyor device
When it is detected that the printed wiring board 12 that has been conveyed is in the position correction unit, the conveyor is stopped.

Next, the left and right sensors 34 detect the left and right displacement of the printed wiring board 12. Alternatively, FIG.
As shown in (B), the CCD sensor 36 detects the amount of lateral displacement of the printed wiring board 12 by image recognition.

This detection result is input to the computer,
The computer determines the direction and movement amount of the position correction rod and outputs a signal. This output signal is converted into a servo output signal to move the position correction rod 28 by a predetermined amount.

The correction control of this embodiment is shown in FIG.
There are width adjustment control for moving the printed wiring board 12 to the central portion of the conveyor and distribution control for distributing the printed wiring board 12 to a predetermined position.

Referring now to FIG. 7, there is shown an embodiment in which the position correction rod moves horizontally. In the above-described embodiment, the position correction rod 28 is moved in the axial direction of the drive roll 14, but in the present embodiment, the position correction rod 40 is horizontally moved along the guide rail 38 that extends horizontally in the width direction of the conveyor. Be moved.

Also in this embodiment, the position of the printed wiring board 12 can be corrected by moving the position correcting rod 40 as in the above-described embodiments. Referring to FIG. 8, there is shown an embodiment in which the embodiment shown in FIG. 7 is modified and applied to a substrate handler. That is, the pair of gripping rods 42 are attached to the support member 44 so as to be horizontally movable, and the support member 44 is mounted on the arm 4 via the cylinder 46.
It is attached to 8.

The printed wiring board 12 conveyed by the driving roll 14 is gripped by the end face of the grip rod 42 by moving the grip rod 42 in the central direction, and is lifted by driving the cylinder 46. Further, it is transported to a desired place by expanding and contracting or rotating the arm 48.

Next, with reference to FIGS. 9 to 13, a wiping mechanism for wiping off a liquid material such as paint adhered to the drive roll 14 will be described. In the embodiment of the wiping mechanism shown in FIG. 9, the wiping cloth 22 is wound around the delivery roll 24 and the winding roll 50, and the pressing roll 2 is used.
The wipe cloth 22 is pressed against the lower surface of each drive roll 14 by 0. Reference numeral 26 is a tension roll that gives tension to the wiping cloth 26.

The wiping cloth 22 is moved in a direction opposite to the direction in which the drive roll 14 conveys the printed wiring board, wipes off the liquid substance adhering to the drive roll 14, and the wiped cloth 22 after wiping is wound up by the winding roll 50. .

As described above, since the liquid matter attached to the drive roll 14 is always wiped off by the wiping cloth 22, the surface of the drive roll 14 is always kept clean. Referring to FIG. 10, there is shown an embodiment in which the degree of contamination of the wiping cloth 22 is detected and the feeding amount of the wiping cloth 22 is controlled. Detection of the degree of dirt on the wiping cloth 22 is performed by the color sensor 52 or the contact sensor 54, and the outputs of these sensors are input to the computer 56.

The amount of dirt is quantitatively calculated by the computer 56, and the motor 60 and the cleaning agent sprayer 6 for driving the winding roll 50 via the converter 58 based on the calculated amount.
4 drives the pump 62 which supplies the cleaning agent.

By controlling in this way, a new wiping cloth 22 is sent out only when the amount of dirt on the wiping cloth 22 is equal to or more than a predetermined amount, so that the wiping cloth 22 can be saved.

Referring to FIG. 11, the wiping cloth 22 'is endlessly wound around the driving roll 68 and the driven roll 70, and the dirty wiping cloth 22' is washed by passing it through the washing tub 66. An example is shown.

In the embodiment of FIG. 12, the wiping cloth 22 after the wiping work is cut by the cutter 72, and the recovery box 74
It is collected inside and discarded. Further, as shown in FIG. 13, the cartridge-shaped cloth roll 76 may be pressed against each drive roll 14 of the conveyor to wipe off the dirt on the drive roll 14.

Next, with reference to FIG. 14, another embodiment of the present invention which employs a tapered drive roll (tapered transport roll) will be described. In this conveyor device, the taper-shaped drive rolls 78 forming the first drive roll row 80 and the second drive roll row 82 are arranged alternately so that the smaller diameter is the inner side.

By adopting the tapered driving roll 78 as described above, even if the tapered driving roll 78 is horizontally arranged as shown in FIG.
The coated surface of does not contact the tapered drive roll 78, and the printed wiring board 12 is held in contact with the tapered drive roll 78 at its end.

Referring to FIG. 15, there is shown an embodiment of a conveyor device in which the left and right tapered drive rolls 84 are installed facing each other. By arranging the tapered drive rolls 84 so as to face each other in this manner, the first
Even if the second drive roll rows 86 and 88 are configured, the same function as that of the embodiment shown in FIG. 14 can be achieved.

Next, referring to FIG. 16, the pair of endless drive belts (conveyor belts) 90 and 92 are separated from each other by a predetermined distance, and the opposite sides are lowered so as to be roughly V.
An example of a conveyor device that is installed so as to be inclined in a V shape is shown.

Even if the endless drive belts 90 and 92 are installed as the conveying means in such an inclined manner, the liquid material application surface of the printed wiring board 12 is the same as in the above-described embodiment in which the driving roll is used as the conveying means. The printed wiring board 12 can be conveyed without the drive belts 90 and 92 coming into contact with each other.

Next, referring to FIG. 17, there is shown an embodiment in which a pair of taper wheels 94 are fixed to a drive shaft 96 with a predetermined distance therebetween. That is, the taper wheel 94 is fixed to the drive shaft 96 so that the smaller diameter thereof faces the inside.
A gear 98 fixed to the drive shaft 96 meshes with the drive gear 100.

Also in this embodiment, as shown in FIG. 17B, the printed wiring board 12 having the liquid material applied on both sides thereof is used.
The coated surface is held in contact with the tapered wheel 94 at its end without contacting the tapered wheel 94. This embodiment is effective when the printed wiring board 12 to be conveyed has a constant width.

Referring now to FIG. 18, the chain 102
An example of a conveyor device in which the tilt block 104 is fixed is shown in FIG. FIG. 19 is an enlarged view of FIG. 18 (B). Even in the conveyor device in which the inclined block 104 is fixed to the chain 102 as described above, when the width of the printed wiring board 12 to be conveyed is constant, the printed wiring board 12 coated with the liquid material on both sides is brought into contact with the coating surface. It can be transported without doing.

Next, referring to FIG. 20, the taper roll 1
An example of a curved conveyor device in which 06 and the flat roll 108 are arranged in a fan shape is shown. As described above, by combining the taper roll 106 and the flat roll 108, the conveying direction of the double-sided coated printed wiring board 12 can be changed by 90 ° without contacting the coated surface of the liquid material.

[0048]

Since the conveyor device for double-sided coated printed wiring board of the present invention is constructed as described in detail above, the following effects can be obtained.

(1) The printed wiring board can be transported in a state where liquid materials such as ink, a photosensitizer, and a paint are applied to both surfaces of the printed wiring board. (2) The position of the printed wiring board can be corrected with the liquid material applied to both sides of the printed wiring board.

(3) Since the dirt on the carrying roll (driving roll) can be automatically wiped off, the printed wiring board to be carried is not soiled. (4) Since the cleaning and wiping of the transport roll can be arbitrarily controlled, the cleaning can be performed efficiently and economically.

(5) Since the lower surface of the transport roll is wiped and cleaned, it is not necessary to stop the transport of the printed wiring board during the wipe cleaning.

[Brief description of drawings]

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

FIG. 2 is an explanatory view of the operation of the embodiment.

FIG. 3 is an explanatory diagram of level adjustment.

FIG. 4 is an explanatory diagram of the operation of correcting the position of the printed wiring board.

FIG. 5 is an explanatory diagram of position reading of a printed wiring board.

FIG. 6 is an explanatory diagram of a correction operation.

FIG. 7 is a diagram showing an embodiment in which a position correction rod moves horizontally.

FIG. 8 is a diagram showing an embodiment in which a position correction rod is applied to a substrate handler.

FIG. 9 is a diagram showing an example of a dirt wiping mechanism.

FIG. 10 is a view showing another embodiment of the dirt wiping mechanism.

FIG. 11 is a view showing still another embodiment of the dirt wiping mechanism.

FIG. 12 is a view showing still another embodiment of the dirt wiping mechanism.

FIG. 13 is a view showing still another embodiment of the dirt wiping mechanism.

FIG. 14 is a diagram showing another embodiment of the present invention that employs a tapered drive roll.

FIG. 15 is a view showing still another embodiment of the present invention which employs a tapered drive roll.

FIG. 16 is a diagram showing an embodiment of the present invention employing an endless drive belt.

FIG. 17 is a diagram showing an embodiment in which tapered wheels are installed relative to each other.

FIG. 18 is a diagram showing an embodiment in which an inclined block is attached to a chain.

FIG. 19 is an enlarged view of FIG. 18 (B).

FIG. 20 is a diagram showing an example of a curve conveyor device in which a taper roll and a flat roll are installed in a fan shape.

FIG. 21 is a diagram showing a conventional example.

[Explanation of symbols]

 12 Printed Wiring Board 14 Drive Roll (Conveyor Roll) 16 First Drive Roll Row 18 Second Drive Roll Row 20 Pressing Roll 22 Wiping Cloth 28,40 Position Correction Rod 78,84 Tapered Drive Roll 90,92 Drive Belt (Conveyor Belt) )

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Akitaka Nakayama 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture, Fujitsu Limited (72) Inventor, Michiharu Abe 1015, Kamedotachu, Nakahara-ku, Kawasaki, Kanagawa Prefecture 72) Inventor Hitoshi Ogawa 1015 Kamiodanaka, Nakahara-ku, Kawasaki City, Kanagawa Prefecture Fujitsu Limited (72) Inventor Kenji Mimura 12-1 Satsuki-cho, Kanuma City, Tochigi Prefecture Alumex Kanuma Plant (72) Inventor Shinohara Nobuaki 12-1 Satsuki-cho, Kanuma City, Tochigi Prefecture At ALUMEX Kanuma Plant

Claims (8)

[Claims] 1. A conveyor device suitable for carrying a printed wiring board (12) having a liquid material applied on both sides thereof, the first drive roll row comprising a plurality of drive rolls (14).
(16) and the second drive roll train (18) are separated from each other by a predetermined distance, and the first and second drive roll trains (16, 18) are lowered so that opposite sides of the first and second drive roll trains (16, 18) are lowered. A conveyor device for a double-sided coated printed wiring board, characterized in that the drive roll rows (16, 18) are installed so as to be inclined in a substantially V shape. 2. A conveyor device suitable for carrying a printed wiring board (12) having a liquid material applied on both sides thereof, the conveyor device comprising a plurality of tapered drive rolls (78, 84).
The driving roll train (80, 86) and the second driving roll train (82, 88) are installed such that the smaller diameter of the tapered driving rolls (78, 84) is the inner side. Conveyor device for double-sided coating printed wiring boards. 3. A conveyor device suitable for carrying a printed wiring board (12) having a liquid material applied on both sides thereof, wherein a pair of drive belts (90, 92) are separated from each other by a predetermined distance and face each other. A conveyor device for a double-sided coated printed wiring board, characterized in that the pair of drive belts (90, 92) are installed so as to be inclined in a substantially V-shape so that the side to be driven is lowered. 4. The first and second drive roll trains (16, 80, 8)
6; 18,82,88) is provided with first and second position correcting means (28) movable in the substantially axial direction of the drive roll (14,78,84). The double-sided coated printed wiring board conveyor device described. 5. The conveyor for double-sided coated printed wiring board according to claim 4, wherein the first and second position correcting means (28) are simultaneously moved in a direction toward each other or in a direction away from each other at substantially the same speed. apparatus. 6. A sensor means (34, 36) for detecting the width of the printed wiring board, and the first and second sensor means (34, 36) according to the output of the sensor means (34, 36).
A movement amount calculation means for calculating the movement amount of the position correction means (28) and the first and second movements according to the output of the movement amount calculation means.
5. The double-sided coated printed wiring board conveyor device according to claim 4, further comprising drive means for driving the position correction means (28). 7. A delivery roll (24) and a take-up roll (5)
0) and a long sheet (22) wound around the first and second drive roll rows (16, 18) pressed against the lower surfaces of the first and second drive roll rows (16, 18). 7. The double-sided coated printed wiring board conveyor device according to claim 1, 2, 4, 5, or 6. 8. The sensor means (52, 54) for detecting dirt on the long sheet (22), respectively, said first and second extracting means.
8. The double-sided coated printed wiring board according to claim 7, further comprising a driving means for selectively driving the winding roll (50) according to the output of the sensor means (52, 54). Conveyor device.