JPH07117826A - Base plate manufacturing device and manufacture thereof, and flat plate conveying device and conveying method - Google Patents

Abstract

PURPOSE:To improve the yield without impairing a printed circuit board by preventing wickets to function as a sliding guide from being brought in contact with a substrate as a body to be conveyed by using a substrate gripper during the conveyance in a cure furnace. CONSTITUTION:A substrate 2 as a body to be heated is conveyed by an input conveyer 1 and lifted by a pair of wickets 6, so as to be fed in a furnace. In this case, the wickets 6 are erected, and a jig 7 as a substrate gripper is slid on the wickets 6, so as to pinch the substrate 2 (position H). Next, when the wickets 6 are straight erected, the substrate 2 is held in the floated state by the jig 7 (position I). Since the wickets 6 are attached with angle, the taper of the jig 7 is not directly come into contact with the substrate 2, the balance is kept. The substrate 12 is slipped off from the taper part of the jig 7 by the inclination of the wickets 6 to be generated by the own weight of the substrate 2, and the jig 7 is naturally dropped inside the wickets 6, thereby the substrate 2 is released.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveyor belt which extends in a substantially horizontal direction, is formed in an annular shape, and is continuously rotatable, and a belt surface of the conveyor belt provided in a substantially vertical direction. The present invention relates to an improvement of a substrate manufacturing apparatus including at least one sliding guide and a heating unit disposed in at least a part of an upper portion of a transport strip, and more particularly, it is moved along the sliding guide. The present invention relates to a substrate manufacturing apparatus and a manufacturing method, and a flat plate transporting apparatus and a transporting method in which a plate-like body, that is, a substrate or a flat plate which is a transported object can be moved without directly contacting a sliding guide. Specifically, for example, in the manufacturing process of a printed circuit board, the wicket functioning as a sliding guide and the substrate, which is the transported object, are configured so as not to come into contact with each other during the transportation in the curing furnace. The present invention relates to an apparatus and a method for preventing scratches and the like.

[0002]

2. Description of the Related Art In a conventional printed board manufacturing process, when a board and a wicket come into contact with each other in a wicket-type curing furnace for heat curing, the ink re-softens by heat, There is a problem that the substrate becomes a defective product because marks such as scratches remain on the contact portion. As one conventional method for solving such a problem, there is known a manufacturing method in which the amount of air in the furnace is reduced to suppress the shake of the substrate.

According to this manufacturing method, there is an advantage that the above-mentioned scars are not formed on the substrate portion that does not directly contact the wickets. However, the re-softening of the ink on the side leaning against the wick (the side in contact with the wick) causes the same phenomenon as the conventional one, so that the effect cannot be obtained.

Therefore, in order to surely avoid such a problem, the substrate transfer system of the curing furnace itself is made to be a suspension system, or an ink which is not easily scratched even when contacted is newly developed. Other than that, no suitable method is easily conceivable. However, for the substrate transfer method of the curing furnace itself,
If the hanging type is adopted, another problem is that the cost will increase, and there is an unsolved problem that it is not easy to develop ink that does not easily cause scratches even if it comes into contact. It was

[0005]

SUMMARY OF THE INVENTION According to the present invention, the disadvantage that occurs in the conventional manufacturing process of a printed circuit board, that is, the substrate to be heated comes into contact with the wicket functioning as a sliding guide during the thermosetting process. This solves the inconvenience that the board becomes defective due to scratches, etc., and uses a jig (flat plate gripper, board gripper, etc.) that can fix the board in a floating state in the curing oven. Thus, the wicket and the substrate are kept in non-contact with each other so that the generation of scratches can be suppressed, and the generation of the defective rate of the product is significantly reduced. Further, the substrate manufacturing apparatus and manufacturing method and the flat plate transfer apparatus which improve the yield by eliminating the scratches caused by the contact with the wickets on the substrate that is the object to be heated without having to make new improvements or changes to the furnace body. And to provide a transportation method.

[0006]

According to the present invention, firstly,
A conveyor belt extending in a substantially horizontal direction, formed in an annular shape, and continuously rotating, and at least one sliding guide attached to a belt surface of the conveyor belt in a substantially vertical direction;
A substrate gripper that is slidable along the sliding guide and has an engaging claw part that partially engages with the substrate; and a heating unit that is disposed in at least a part of the upper portion of the transport strip. And a substrate manufacturing apparatus provided with.

Secondly, in the first board manufacturing apparatus, the sliding guide has two guide parts, and the board gripper is composed of a main body part and two leg parts. The part has a slit part into which two guide parts of the sliding guide are inserted on one surface, and a taper part having an angle on the other surface, and each of the two leg parts has an angle smaller than the above angle. This is a configuration having a tapered portion having

Thirdly, a substrate gripper, which has an engaging claw portion that is engaged with the substrate and is located on a sliding guide that is attached substantially vertically to the annular transport strip, is previously provided with the transport strip. A first step of moving the substrate away from the body, and a second step of transporting the substrate from one direction on a substantially horizontal plane,
A third step of applying a substantially vertical contact to the belt surface of the transfer belt, and a fourth step of gripping the substrate by moving the substrate gripper to a position closer to the transfer belt and engaging the substrate. A substrate configured to sequentially perform six steps of a fifth step of heating the substrate while transporting the substrate and a sixth step of moving the substrate gripper to a position away from the transport strip to release the substrate. It is a manufacturing method.

Fourthly, in the third method of manufacturing a substrate, the carrier strip is arranged so as to extend in a substantially horizontal direction, and the substrate gripper is moved to a position away from the carrier strip. The step 6 is configured to move the sliding guide by the weight of the substrate gripper when the sliding guide is located below the transport strip.

Fifthly, a conveyor belt extending substantially horizontally, formed in an annular shape, and continuously rotating, and at least one member attached to the belt surface of the conveyor belt in a substantially vertical direction. A flat plate transporting device is provided with two sliding guides, and a flat plate gripper that is slidable along the sliding guides and has an engaging claw portion that partially engages with the flat plate.

Sixthly, a flat plate gripper, which has an engaging claw portion which engages with a flat plate, is located on a slide guide which is attached substantially vertically to an annular transport strip, and the flat strip gripper is previously provided. A first step of moving to a position away from the body, and a second step of transporting the flat plate from one direction on a substantially horizontal plane,
A third step of applying a substantially vertical contact to the belt surface of the transfer belt, and a fourth step of gripping the flat plate by moving the flat plate gripper to a position closer to the transfer belt and engaging the flat plate. A fifth step of transporting the flat plate, and a sixth step of moving the flat plate gripper to a position away from the transport strip to open the flat plate. is there.

Seventh, in the sixth flat plate transport method, the transport strips are arranged so as to extend in a substantially horizontal direction, and the flat plate gripper is moved to a position away from the transport strips. The step 6 is configured to move the sliding guide by the own weight of the flat plate gripper when the sliding guide is located below the transport strip.

[0013]

According to the present invention, in a printed board manufacturing process, in a wicket-type curing furnace for heat curing treatment, a novel jig that can naturally move up and down in the wicket by its own weight and fix the board in a floating state. By using, the non-contact between the wicket and the printed circuit board is possible.

[0014]

Embodiments of the present invention will be described in detail with reference to the drawings. In this embodiment, a substrate manufacturing apparatus and a manufacturing method will be mainly described. next,
With respect to the present invention, a schematic configuration of a curing oven after printing a solder resist (thermosetting ink) and an operating principle of a jig (substrate gripper) used will be described.

FIG. 1 is a diagram showing an embodiment of the substrate manufacturing apparatus of the present invention, and is a side view of the principal part for explaining the moving state of the substrate in the curing furnace. In the figure, 1 is a feeding conveyor, 2 is a substrate, 3 is a conveyor belt, 4 and 5 are rotary driving parts, 6 is a wicket (sliding guide), 7 is a jig (substrate gripper), and 8 is a carry-out conveyor. , Arrow A is the moving direction of the feeding conveyor 1, B is the moving direction of the wicket 6, and C is
And D are moving directions of the transport belt 3, E and F are rotating directions of the rotation driving units 4 and 5, G is moving direction of the carry-out conveyor 8, and H is H.
Is a position where the jig 7 holds the substrate 2, I is a position where the substrate 2 is kept floating, J is a position where the jig 7 falls naturally, K is a position where the jig 7 releases the substrate 2, and L is a jig 7. Wicket 6
, P is the pitch between the two front and rear wickets 6, where P falls naturally.

The printed circuit board manufacturing apparatus of FIG. 1 is characterized in that a jig (board gripper) 7 is used (inventions 1 and 3 and 4). Then, by the action of the jig 7, the substrate 2 is moved in the curing furnace in a state where it is not in direct contact with the wicket 6 and is subjected to a heat curing treatment.

In FIG. 1, the substrate 2 which is the object to be heated is
From the left side of the figure, it is carried by the charging conveyor 1, and is lifted by, for example, a pair of two wickets 6 and fed into the furnace. The wicket 6 advances in the direction of arrow B while performing the inching operation, and at the exit shown on the right,
The substrate 2 is dropped onto the carry-out conveyor 8 and carried out of the furnace as indicated by an arrow D.

Before describing the overall operation of FIG. 1, the wicket 6 and the jig 7 will be described in detail. The jig 7 is attached to the wicket 6 as follows.

FIG. 2 is an external view of the wicket 6, where (1) is a front view and (2) is a side view. In the figure, 6a and 6b are guide portions of the wicket 6, and 6c is an upper end connecting portion.

The wicket 6 is a sliding guide having a sliding function with respect to the jig 7. As shown in FIG. 2, the wicket 6 includes guide portions 6a, 6b and an upper end connecting portion 6c for connecting both portions upward. It is configured. Guide parts 6a, 6b
The interval of is narrower at the upper side so that the jig 7 can slide easily.

FIG. 3 is a view showing an example of a state in which the jig 7 is attached to the wicket 6 shown in FIG. 2, (1) is a front view, and (2) is a side view. Show. The reference numerals in the figure are the same as those in FIG. 2, and 7 indicates a jig, and an arrow M indicates the moving direction of the jig 7.

As shown in FIG. 3 (1), the wicket 6 and the jig 7 are located at two positions on the left and right sides of the substrate 2 on the carrier strip (3 in FIG. 1), although they vary depending on the size of the substrate 2. Attach in pairs. The jig 7 is provided with two legs to maintain the left-right balance, and the guide portion 6 of the wicket 6 is held.
Slide a and 6b in the vertical direction as indicated by arrow M in FIG. 3 (2). The detailed structure of the jig 7 is shown in FIG.

FIG. 4 is an external view showing an embodiment of the jig 7 used in the present invention. (1) is a front view, (2)
Is a right side view and (3) is a bottom view. In the figure, 7a is a main body portion, 7b is a leg portion, 7c is a slit portion provided in the main body portion 7a, 7d is a notch portion also provided in the main body portion 7a, and 7e is a 30 ° portion provided in the main body portion 7a. The taper portion, 7f is a 10 ° taper portion provided on the leg portion 7b,
Q indicates the intersection of the tapered portions 7e and 7f.

The jig 7 has a structure as shown in FIGS. 4 (1) to 4 (3), and is a substrate gripper that functions as a movable substrate fixture (the invention of claim 2). Substrate (2 in Figure 1)
Is supported by the two legs 7b shown in FIGS. 4 (1) and 4 (2) to prevent contact with the wicket 6.

Explaining this state in detail, the substrate (2 in FIG. 1) can be actually gripped (contacted) by the condition shown in FIG.
The two taper parts 7e and 7f shown in FIG.
Intersection Q of the tapered portion 7e of 10 ° and the tapered portion 7f of 10 °
Only in the vicinity of. In this way, the jig 7 and the substrate 2 are
Only at their ends will they touch each other.

Since the jig 7 enters between the substrate 2 and the wicket 6 at an angle of 10 °, it does not stop in the middle of the wicket 6. Further, the jig 7 has a configuration in which the wicket 6 can be easily fitted into the slit portion 7c by the cut portion 7d provided in the main body portion 7a. The configurations and functions of the wicket 6 and the jig 7 are as described above.

Next, the operation of the jig 7 in the substrate manufacturing apparatus shown in FIG. 1, that is, the curing furnace will be described in detail. The substrate 2 is loaded on the loading conveyor 1. The jig 7 slides on the wicket 6, and at the same time as the wicket 6 rises, the substrate 2 is pinched (position H).

When the wicket 6 stands upright, the jig 7 holds the substrate 2 in a floating state (position I). In this case, since the wickets 6 are attached at an angle, the tapered portion 7e of the jig 7 does not come into direct contact with the substrate 2 and maintains balance.

Further, since the mutual distance (pitch) P of the wickets 6 is, for example, 25.4 mm pitch, even if the jig 7 is swung back and forth by the wind pressure when continuously attached, the back and forth It is possible to prevent the jigs 7 from interfering with each other and sliding down. On the outlet side, the substrate 2 naturally slides off the 30 ° taper portion 7e of the jig 7 due to the inclination of the wicket 6 caused by the weight of the substrate 2. That is, the jig 7
Falls naturally in the wicket 6 (position J). By the above operation, the substrate 2 is released from the jig 7 (position K) and placed on the carry-out conveyor 8.

The substrate 2 is carried out of the furnace (direction of arrow G). In accordance with the operation of the wicket 6, the jig 7 spontaneously falls again to the upper side of the wicket 6 (in FIG. 1, since the wicket 6 is below the carry-out conveyor 8, it is below the wicket 6) (position L).

By using the jig 7 for performing the above-described operation, in the substrate manufacturing apparatus and manufacturing method of the present invention, the wicket 6 which is a sliding guide and the substrate 2 which is the transported object are in direct contact with each other. The curing furnace can be moved so as not to do so. The jig 7 shown in FIG. 4 can be applied to other models only by changing the long hole pitch of the slit portion 7c according to the shape of the wicket 6.

Further, in the above-mentioned embodiments, the case of performing the horizontal type transfer has been described, but it can be used as a method of fixing an object with a high degree of freedom even in the case of performing the vertical type transfer.
Further, not only in the case of the substrate manufacturing apparatus, but also in the flat plate transporting device for transporting the flat plate as the transported object without directly contacting the sliding guide such as the wicket 6 (the invention of claim 5).
Alternatively, the present invention can be carried out by the transportation method (the inventions of claims 6 and 7).

[0033]

According to the substrate manufacturing apparatus of the first aspect, by using the substrate gripper (jig), the substrate to be transported is not directly contacted with the sliding guide such as the wicket, It can be moved inside the curing furnace. Therefore, the substrate is free from scratches and the like as in the conventional case, the yield is improved, and the productivity is improved.

Further, it is not necessary to change the setup for changing the work size of the substrate. Furthermore, the effect can be obtained regardless of the type of ink used.

According to the board manufacturing apparatus of the second aspect, the work of mounting and removing is easy. In addition, it can be manufactured at a low unit price. According to the substrate manufacturing method of claims 3 and 4, the same effect as that of the substrate manufacturing apparatus of claim 1 can be obtained.

According to the flat plate carrying device of the fifth aspect, the flat plate as the object to be carried can be moved without directly contacting the sliding guide. According to the flat plate conveying method of the sixth and seventh aspects, the same effect as that of the flat plate manufacturing apparatus of the fifth aspect can be obtained.

[Brief description of drawings]

FIG. 1 is a diagram showing an embodiment of a substrate manufacturing apparatus of the present invention, and is a side view of essential parts for explaining a moving state of a substrate in a curing furnace.

FIG. 2 is an external view of a wicket 6.

3 is a diagram showing an example of a state in which a jig 7 is attached to the wicket 6 shown in FIG.

FIG. 4 is an external view showing an embodiment of a jig 7 used in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Input conveyor 2 Substrate 3 Conveying strips 4 and 5 Rotational drive unit 6 Wicket (sliding guides 6a and 6b Guide portion of wicket 6c Upper end connection portion 7 Jig 7a Main body portion 7b Leg portion 7c Provided on main body portion 7a Slit portion 7d Cut portion 7e similarly provided on the main body portion 7a 30e taper portion 7f provided on the main body portion 7a 10 ° taper portion provided on the leg portion 7b 8 Carry-out conveyor

Claims (7)

[Claims] 1. A conveyor belt which extends in a substantially horizontal direction, is formed in an annular shape, and rotates continuously, and at least one slide provided on a belt surface of the conveyor belt in a substantially vertical direction. A moving guide, a substrate gripper that is slidable along the sliding guide, and has an engaging claw portion that partially engages with the substrate, and is provided on at least a part of the upper portion of the transport strip. And a heating unit that is provided. 2. The substrate manufacturing apparatus according to claim 1, wherein the sliding guide has two guide portions, and the substrate gripper includes a main body portion and two leg portions.
The main body portion has a slit portion on one surface into which the two guide portions of the sliding guide are inserted, and a taper portion having an angle on the other surface, and each of the two leg portions has a value smaller than the angle. A substrate manufacturing apparatus having a tapered portion having an angle of. 3. A substrate gripper, which is located on a sliding guide provided substantially perpendicularly to an annular transport strip and has an engaging claw portion for engaging a substrate, is provided in advance from the transport strip. A first step of moving the substrate to a distant position, a second step of transporting the substrate from one direction on a substantially horizontal plane, a third step of applying the substrate substantially vertically to the strip surface of the transport strip, and the substrate A fourth step of gripping the substrate by moving the gripper to a position closer to the transfer belt and engaging the substrate; a fifth step of transferring and heating the substrate at the same time; A sixth aspect of the present invention is a method of manufacturing a substrate, which comprises sequentially performing six steps of a sixth step of opening the substrate by moving it to a position away from the carrier belt. 4. The substrate manufacturing method according to claim 3, wherein the carrier strip is disposed so as to extend in a substantially horizontal direction, and the substrate gripper is moved to a position away from the carrier strip. The step is a method of manufacturing a substrate, wherein the sliding guide is moved by the weight of the substrate gripper when the sliding guide is located below the transport strip. 5. A conveyor belt which extends in a substantially horizontal direction, is formed in an annular shape, and continuously rotates, and at least one slide provided on a belt surface of the conveyor belt in a substantially vertical direction. A flat plate transporting device comprising: a moving guide; and a flat plate gripper that is slidable along the sliding guide and has an engaging claw portion that partially engages with the flat plate. 6. A flat plate gripper, which has an engaging claw portion which is engaged with a flat plate and which is located on a sliding guide which is attached substantially perpendicularly to the annular transport strip, is previously provided from the transport strip. A first step of moving to a distant position, a second step of transporting the flat plate from one direction on a substantially horizontal surface, a third step of applying the flat plate substantially perpendicularly to the strip surface of the transport strip, and the flat plate A fourth step of gripping the flat plate by moving the gripper to a position closer to the transport strip and engaging the flat plate, a fifth step of transporting the flat plate, and a step of moving the flat plate gripper to the transport strip. And a sixth step of opening the flat plate by moving the flat plate to a position away from the flat plate conveying method. 7. The flat plate transport method according to claim 6, wherein the transport strips are arranged so as to extend in a substantially horizontal direction, and the flat plate gripper is moved to a position away from the transport strips. In the step, the sliding guide is moved by the weight of the flat plate gripper when the sliding guide is located below the transport strip, and the flat plate transport method is characterized in that.