JPS6322975B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an aging device for a laminate, such as a copper-clad laminate, that heats the laminate to remove residual stress therein.

[Background technology]

Traditionally, aging of laminates such as copper-clad laminates has been done by stacking them in a hot air dryer for a long time, or by leaving them in a hot air dryer for a long time.
Alternatively, a heating process was provided during the press molding process to remove residual stress. However, in the former conventional example, since the materials are stacked, heat is applied differently between the outside and inside, resulting in variations in dimensional stability. Furthermore, the residual stress removal effect varies between the outside and the inside due to the gravity of the product itself.
In addition, in the latter conventional example, since it is carried out during the press molding process, the molding time becomes long and productivity is reduced.

[Purpose of the invention]

The present invention has been made in view of the above points, and an object of the present invention is to effectively remove residual stress during the process of forming a laminate, and to form a laminate that does not cause variations among individual laminates. is to provide board aging equipment.

[Disclosure of the invention]

The laminate aging device of the present invention includes a conveyor 2 for conveying a laminate 1 into a heating furnace, and a holding means 3 for suspending and holding a plurality of laminates 1 provided on the conveyor 2 at intervals. , an insertion means 4 for inserting the laminate 1 carried in in a horizontal state into the holding means 3, and an insertion conveyor 7 of the insertion means 4 is provided with an insertion belt 10 on a conveyor base 9 having a suction box 8. The insertion conveyor 10
is characterized in that it can be raised and lowered freely between a horizontally fallen state and a vertically erected state.
In other words, the laminate 1 is inserted into the holding means 3 from the insertion means 4, the laminate 1 is held by the holding means 3, a plurality of laminates 1 are suspended from the conveyor 2 at intervals, and the laminate 1 is suspended from the conveyor 2 at intervals. The laminate plate 1 is conveyed into a heating furnace to remove residual stress, and the laminate plate 1 that is carried in horizontally is automatically held by suction so that it can be raised vertically and held in the holding means 3. .

The present invention will be explained in detail below with reference to Examples. The main parts of the laminate aging apparatus of the present invention include an insertion means 4, a conveyor 2, a holding means 3, and a heating furnace (not shown). First, the insertion means 4 will be explained with reference to FIG. Reference numeral 6 denotes a carry-in conveyor such as a belt conveyor, and an insertion conveyor 7 is disposed in front of the carry-in conveyor 6 (with the forward direction being the direction in which the laminates travel). This insertion conveyor 7 has a plurality of insertion belts 10 wound around a conveyor base 9 having a suction box 8.
It is formed by punching a large number of suction holes 11 in it. The insertion conveyor 7 is attached to the container body 12 so that it can be raised and lowered freely by a shaft 13, and is driven by a motor 1 with a brake.
By driving the shaft 13 at 4, the insertion belt 1
0 can be rotated. Reference numeral 15 denotes a reversing mechanism, in which a motor 16 connects the rotating disc 1 via a clutch brake unit 17 and a belt 24.
8 is rotated, and the rotating disk 18 and the insertion conveyor 7
Connecting rod 19 to one end of rotating disk 1
8, and the insertion conveyor 7 is raised and lowered by 90 degrees when driven by a motor 16. Here, reference numeral 41 is a proximity switch for stopping, which detects the rotation of the rotary disk 18 and operates the clutch brake unit 17.
20 is a suction fan, and the suction fan 20 is connected to the suction box 8 via a flexible hose 21. 22 is an on-off valve, and 23 is a rotary air cylinder. When the laminate 1 is inserted by the carry-in conveyor 6, it is conveyed onto the insertion belt 10, which is waiting in a horizontal state and is rotationally driven. At this time, the tip of the laminated plate 1 is detected by the position detection phototube 25, and after a certain time (set by a timer), the insertion belt 10 is stopped by the motor 14 with a brake. When the laminated sheet 1 is carried into the insertion belt 10, it is attracted to the insertion belt 10 by suction by the suction fan 20. After that, the clutch of the clutch brake unit 17 motor 1
6 is transmitted to the belt 24, the rotating disk 18 is rotated, and the insertion conveyor 7 is vertically erected while the laminated plate 1 is being attracted. Thereafter, the motor 14 with a brake is driven again to raise the laminated plate 1 in the direction of the arrow A until the insertion position detection phototube 26 detects it. When the upper end of the laminated plate 1 is held by the holding means 3, which will be described later, the opening/closing valve 22 is closed to release the suction of the insertion belt 10, the laminated plate 1 is removed from the insertion belt 10, and the clutch brake unit 17 is moved again. The clutch is engaged and the rotary disk 18 is rotated by the motor 16 to return the insertion conveyor 7 to the horizontal position and wait for the insertion of the next laminate 1. Next, the conveyor 2 and the holding means 3 will be explained with reference to FIG. The conveyor 2 is a so-called chain conveyor, and conveys the material from above the insertion means 4 through the heating furnace to the discharge section. This conveyor 2 is provided with a plurality of holding means 3 at equal intervals. Holding means 3
The main body is composed of a chuck bar 28 and a chuck 29. A chuck shaft 30 is arranged parallel to the chuck bar 28, and both ends of the chuck shaft 30 are rotatably mounted on a mounting plate 31, and a plurality of chucks 29 are mounted on the chuck shaft 30. A rubber roller 33 is rotatably mounted on each chuck 29 via a leaf spring 32. chuck shaft 30
A coil spring 40 is attached to the chuck shaft 30 to bias the rubber roller 33 in a direction in which it comes into elastic contact with the chuck bar 28, and an actuating plate 34 is attached to the end of the chuck shaft 30. A chuck opening/closing cylinder 35 is arranged above the operating plate 34, and a pressing plate 37 is attached to the lower end of the rod 36 of the chuck opening/closing cylinder 35, and the lower end of the pressing plate 37 presses the operating plate 34. The chuck shaft 30 is rotated by the rotation of the chuck shaft 30. Here, reference numeral 38 denotes a guide groove of the pressing plate 37, which is fitted with a guide plate 39 of the chuck bar 28 so that the chuck bar 28 can be positioned. When the conveyor 2 is fed by a predetermined pitch and the chuck bar 28 comes to the stop position, the pressing plate 37 is lowered by the chuck opening/closing cylinder 35 and the guide plate 39 and the guide groove 38 are fitted together as shown in FIG. The chuck bar 28 is then fixed at an accurate position, and the actuating plate 34 is pushed by the pressing plate 37, causing the chuck shaft 30 to rotate and the chuck bar 2
8 and the rubber roller 33 and wait for the laminate 1 to be inserted. When the upper end of the laminate 1 that has been raised by the aforementioned insertion belt 10 enters between the rubber roller 33 and the chuck bar 28 and is inserted until it is detected by the insertion position detection phototube 26 as shown in FIG. 5, the chuck opens and closes. The pressure plate 37 is raised by the cylinder 35, and the upper end of the laminated plate 1 is sandwiched between the chuck bar 28 and the rubber roller 33. Thereafter, the opening/closing valve 22 is closed to release the adhesion to the insertion belt 10, the laminated plate 1 is removed, the insertion conveyor 7 is returned to the horizontal position, the holding means 3 is moved one pitch, and the next operation is repeated. In the holding means 3, the rubber roller 33
The reason why it is sandwiched between the two is to prevent the laminate 1 from being damaged. At this time, silicone rubber is used especially when heat resistance is required. Further, the reason why a plurality of chucks 29 are attached to the holding means 3 and a rubber roller 33 is provided to each chuck 29 is to enable the laminated plate 1 to be adapted to changes in size. The reason why the rubber rollers 33 are attached by the leaf springs 32 in the holding means 3 is to absorb the differences in the deformation and abrasion of the rubber rollers 33 due to heat, which vary depending on the number of times each rubber roller 33 is used. Further, a coil spring 40 is attached to the chuck shaft 30 by the holding means 3.
The reason why the laminate board 1 was installed is because there are many types of thicknesses of the laminate plate 1, such as 0.1 to 3.0 mm, and it is necessary to correspond to each thickness.

Next, the overall operation of the laminate aging apparatus constructed as described above will be explained. A laminate 1 such as a copper-clad laminate is supplied from a carry-in conveyor 6 to an insertion conveyor 7, and when the laminate 1 is placed on the insertion conveyor 7, the laminate 1 is attracted to the insertion belt 10 and the insertion belt 10 is stopped. be done. Next, the insertion conveyor 7 is raised from a horizontal state to a vertical state, the insertion belt 10 is driven, and the laminate 1 is raised. At this time, the gap between the chuck bar 28 of the holding means 3 and the rubber roller 33 is opened, and the upper end of the laminate 1 enters between the chuck bar 28 and the rubber roller 33. Next, the upper end of the laminate 1 is sandwiched between the rubber roller 33 and the chuck bar 28, and the adhesion to the insertion belt 10 is released, and the insertion conveyor 7 returns to the horizontal position. Next, conveyor 2
The laminated plate 1 is advanced by a pitch and inserted by the insertion conveyor 7 in the same manner as described above, and is held by the next holding means 3. In this way, the laminate 1 is transferred to the conveyor 2.
They are suspended and held at equal intervals, and transported one after another into a heating furnace by a transport conveyor 2, where they are heated and residual stress is removed. When passing through the heating furnace, laminate plate 1
They are heated evenly without any contact between them. At this time, there is a wind velocity in the heating furnace that does not impede heat transfer efficiency. The laminate 1 from which the residual stress has been removed is cooled,
When inserting at the ejection section, take out the laminate 1 by performing the reverse operation.

〔Effect of the invention〕

Since the present invention is constructed as described above, the laminate is inserted and held by the insertion means into the holding means of the conveyor, and the plurality of laminates are suspended from the conveyor at intervals. The laminate can be transported into a heating furnace in the heating furnace, and the residual stress during the laminate forming process can be removed in the heating furnace, and dimensional changes during the printed circuit board processing process (for example, before and after the etching process) can be reduced, Moreover, since the laminates can be hung and heated at intervals, it is possible to heat them uniformly and remove residual stress uniformly from each laminate.Furthermore, since residual stress is removed in a process separate from press molding, production is easier. It is not a sexual downgrade.

Also, the laminate that has been carried in horizontally is placed on the insertion belt of the insertion conveyor in a fallen state, and in this state, the laminate is attracted to the insertion belt by suction from the suction hole, and then the insertion conveyor is raised vertically. As a result, the laminate is also raised vertically in a suctioned state, and by driving the insertion belt, the laminate is moved upward in a vertically suctioned state, and the upper end of the laminate is held by the holding means. The laminate is hung vertically on the transport conveyor by releasing the adsorption at It can be lowered to automate the hanging of the laminate, and can be hung without damaging or deforming the laminate.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an insertion means according to an embodiment of the present invention, FIG. 2 is a perspective view showing the conveyor and holding means of the same as above, FIG. 3 is a perspective view of the rubber roller part of the same as above, and FIG. 4 is a perspective view of the same as above. FIG. 5 is an explanatory diagram showing the operation of the chuck opening/closing cylinder of FIG. be.

Claims (1)

[Claims] 1 A transport conveyor that transports the laminates into the heating furnace, a holding means for suspending and holding the laminates provided at intervals on the transport conveyor, and a laminate that holds the laminates brought in in a horizontal state. The insertion conveyor of the insertion means has an insertion belt wound around a conveyor base having a suction box so as to be rotationally driven, and a plurality of suction holes in the insertion belt. 1. An aging device for laminated plates, characterized in that the insertion conveyor is formed by perforating a hole in the laminate, and the insertion conveyor can be raised and lowered between a horizontally fallen state and a vertically erected state.