JP2003245818A - Method for cutting-off laminated sheet coated with copper - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method for cutting-off a laminated sheet coated with copper, by which, when a roll material has been cut-off using a rotary circular saw in the direction perpendicular to the axis of the roll material, the dimensional accuracy of the width of the laminated sheet coated with copper in the cut-off roll material obtained by cutting-off can be kept excellent. <P>SOLUTION: In the method for cutting-off a laminated sheet coated with copper, the roll material 2 formed by winding a lengthy laminated sheet 1 coated with copper around the outer periphery of a cylindrical core 3 is cut-off in the direction perpendicular to the axis of the core 3 using the rotary circular saw 6. In this method, the roll material 2 is cut-off by the circular saw 6 rotating in the direction opposite to the rotational direction of the roll material 2, while the roll material 2 is rotated about the core 3 in the same direction as the winding direction of the laminated sheet 1 coated with copper. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a roll core formed by rolling a long copper clad laminate around a cylindrical core with a rotating circular saw blade. The present invention relates to a method for cutting a copper clad laminate that cuts in a direction orthogonal to the axis.

[0002]

2. Description of the Related Art In recent years, as a material for producing an inner layer material for a multilayer printed wiring board, a long copper clad laminate is rolled around a cylindrical core to form a roll. Material is becoming used. As an example of the roll material, the thickness of the insulating layer is 0.025 mm to 0.20.
Examples include glass cloth-based epoxy resin copper-clad laminates, which are as thin as about mm and have copper foil adhered on both sides. Such a roll material has a length of about 50 m to 500 m.
It is manufactured by winding a long copper clad laminate having a width of about 500 mm to 1250 mm around a cylindrical winding core in a roll shape. Then, a roll material having such a wide width, which is further cut into a predetermined width dimension (for example, 200 mm, 300 mm, etc.), is used when continuously manufacturing the inner layer material. Is cut in a direction orthogonal to the axis of the winding core to divide the core. As a method of cutting in this way, for example, a method of cutting using a rotating circular saw blade as proposed by the applicant of the present application in JP 2001-8739 A is known.

However, in the conventional method of cutting using a rotating circular saw blade, the precision of the width dimension of the copper clad laminate in the roll material after division obtained by cutting is insufficient, and an improvement measure is required. Has been.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object thereof is to provide a circular saw that rotates a roll material in a direction orthogonal to the axis of the winding core. It is an object of the present invention to provide a method for cutting a copper-clad laminate which can improve the accuracy of the width dimension of the copper-clad laminate in the roll material after the division obtained by the cutting when the blade is cut with a blade.

[0005]

According to a first aspect of the present invention, there is provided a method for cutting a copper clad laminate, wherein a long circular copper clad laminate is rolled around a cylindrical winding core by a rotating circular saw blade. A method for cutting a copper-clad laminate in which a roll material formed by winding in a direction perpendicular to the axis of a winding core is cut, wherein the roll material is wound in the same direction as the winding direction of the copper-clad laminate. It is characterized by cutting with a circular saw blade rotating in a direction opposite to the rotating direction of the roll material while rotating around the core.

In this case, the roll material is rotated about the core in the same direction as the direction in which the copper clad laminate is wound around the core, while rotating in the opposite direction of the rotation direction of the roll material. Since it is cut with a circular saw blade that is being cut, the cutting with the circular saw blade acts to tighten the copper clad laminate that is being wound. Therefore, it is considered that the layer deviation of the rolled copper-clad laminate at the time of cutting is less likely to occur, but the accuracy of the width dimension of the copper-clad laminate in the divided roll material obtained by cutting is improved.

A method for cutting a copper-clad laminate according to a second aspect of the present invention is the same as the method for cutting a copper-clad laminate according to claim 1,
Rotate the roll material around the core by rotating the shaft that passes through the core, supports the core, and has shaft ends protruding on both sides of the core. At the same time, a stopper stopper for preventing layer deviation at the time of cutting is attached to both end portions of the shaft body so that the stopper stopper contacts the side surface of the roll material,
Characterized by cutting the roll material.

In this case, the stopper material is attached to both end portions of the shaft body of the shaft body so that the stoppers are brought into contact with the side surfaces of the roll material, and the roll material is cut. The layer displacement of the copper-clad laminate is prevented, and the accuracy of the width dimension of the copper-clad laminate in the divided roll material obtained by cutting is further improved.

A method of cutting a copper clad laminate according to a third aspect of the present invention is the method of cutting a copper clad laminate according to claim 1 or 2, wherein the roll material is in a direction orthogonal to the axis of the winding core. , When cutting at multiple points, each of the outer peripheral surfaces of both roll ends of the roll material, by pressing with a finger toward the core side, to compare the winding hardness of both ends of the roll material,
The roll material is characterized in that the roll material is cut in order from a cut portion closer to the roll end side having a softer winding hardness.

When the number of windings of the roll material increases, the roll material is affected by the difference in plate thickness in the width direction of the long copper clad laminate,
A difference is likely to occur in the winding hardness of the ends of both rolls. When a roll material having a difference in winding hardness between both roll ends is cut with a rotating circular saw blade in a direction orthogonal to the axis of the winding core, the winding hardness is soft. The layers of the copper-clad laminate tend to shift toward the end of the roll. Therefore, in the method for cutting a roll material according to the third aspect of the present invention, the roll material having a softer winding hardness is cut in order from the cut portion closer to the roll end side. Therefore, in this case, it is possible to finish the cutting at the position where the layers are easily shifted before the phenomenon that the layers of the copper-clad laminate are displaced. Dimensional accuracy can be improved.

A method for cutting a copper-clad laminate according to a fourth aspect of the present invention is the method for cutting a copper-clad laminate according to claim 1,
Rotate the roll material around the core by rotating the shaft that passes through the core, supports the core, and has shaft ends protruding on both sides of the core. In addition, a stopper for preventing displacement when cutting is attached to only one end of the shaft of the shaft so that the stopper comes into contact with the side surface of the roll material, and The one shaft end portion, each of the outer peripheral surfaces of both roll end portions of the roll material, by pressing with a finger toward the winding core side, when comparing the winding hardness of both roll end portions of the roll material The roll material is characterized in that the roll material is cut in order from the cut end that is the shaft end located on the side of the roll end having the softer winding hardness and further away from the end of the shaft where the stopper is arranged.

In this case, a stopper is attached only to the end of the shaft on the side of the roll end where the winding hardness is softer, and in order from the cut end far from the end of the shaft where the stopper is arranged, Since the roll material is cut by the rotating circular saw blade, the work of installing the stopper is reduced and the layer of the copper clad laminate is displaced toward the roll end side where the winding hardness is softer. Since it can be prevented by the shift stopper, the copper clad laminate can be cut while preventing the layer shift. Therefore, the accuracy of the width dimension of the copper clad laminate in the divided roll material after cutting can be improved.

A roll material cutting method according to a fifth aspect of the present invention is the roll material cutting method according to the second or fourth aspect, wherein the shift stopper contacts the entire side surface of the roll material. It is a stopper.

In this case, since the shift stopper is a stopper that comes into contact with the entire side surface of the roll material, layer deviation of the copper clad laminate in the roll material at the time of cutting can be reliably prevented. The accuracy of the width dimension of the copper clad laminate in the divided roll material after cutting can be improved.

[0015]

1 is a schematic view of a cutting device used for carrying out an embodiment of a method for cutting a copper clad laminate according to the inventions of claims 1 to 4. FIG.

First, a first embodiment of a method for cutting a copper clad laminate will be described.

In the first embodiment, as shown in FIG.
A roll material 2 formed by winding a long copper clad laminate 1 around a cylindrical winding core 3 in a roll shape is cut by a circular saw blade 6 in a direction orthogonal to the axis of the winding core 3. Then, by passing through the winding core 3 of the roll material 2 and supporting the winding core 3 and rotating the shaft body 4 having shaft body end portions protruding on both sides of the winding core 3, Roll material 2 and core 3
I am trying to rotate around. In this case, as the long copper clad laminate 1, for example, a strip-shaped double-sided copper clad produced by sticking copper foil on both sides of a glass cloth impregnated with epoxy resin or the like can be used. After the copper-clad laminate 1 is wound around the outer circumference of the winding core 3 such as a thick paper tube while applying tension, the tip end of the winding end is fixed to the roll material 2 with tape or the like. , It is desirable that the tip does not turn over when cutting.

In the first embodiment, as shown in FIG. 2, the roll material 2 is wound in the same direction as the direction in which the copper clad laminate 1 is wound around the winding core 3 (direction A in FIG. 2). While rotating around the core 3, the roll material 2 is cut by the circular saw blade 6 which is rotating in the direction opposite to the rotation direction (direction B in FIG. 2) (direction C in FIG. 2). . Then, the roll core 2 is inserted through the core 3 to support the core 3,
In addition, the shaft body 4 with the shaft body ends protruding on both sides of the winding core 3
(See FIG. 1) is supported at both ends. The shaft body 4 is a supporting and rotating means for the roll material 2, and the rotation of the shaft body 4 rotates the roll material 2. In the first embodiment, the core 3 is detachably pressure-contacted with the inner surface of the core 3.
A plurality of lugs (not shown) are provided on the shaft body 4 as a member for holding the shaft so as to project in the outer peripheral direction of the shaft body. It can move back and forth in any direction. The roll material 2 is placed at a predetermined position, the shaft body 4 is inserted into the winding core 3, and then a plurality of lugs provided on the outer periphery of the shaft body 4 are attached by using a screw mechanism, compressed air, or the like. The shaft extends outward from the shaft body, and the inner surface of the winding core 3 is fixed to the shaft body 4 by this lug.
The arrangement of the lugs is preferably staggered. Then, the lug is made of, for example, a synthetic resin, and the circular saw blade 6 reaches the surface of the lug, so that the winding core 3 can be cut together with the copper-clad laminate of the roll material 2. When the inner surface of the winding core 3 is fixed to the shaft body 4 by the lugs in this way, the divided roll material 2 after cutting is supported by the lugs, so that it can be continuously cut at a plurality of locations.
By making the depth at which the lug is cut by the circular saw blade 6 as shallow as possible, the lug can be continuously used in the next cutting operation without replacement. After the cutting work by the circular saw blade 6, the shaft body 4 and the inner surface of the winding core 3 are separated by accommodating the lug in the shaft body 4 by using a screw mechanism, compressed air or the like. You can

In the case of the first embodiment, as shown in FIG. 2, the roll material 2 is in the same winding direction as the copper clad laminate 1 is wound around the winding core 3 (direction A in FIG. 2). The roll material 2 while rotating it around the core 3 in the same direction, the roll material 2 is cut by a circular saw blade 6 which is rotating in the direction opposite to the rotation direction (direction B in FIG. 2) (direction C in FIG. 2). Therefore, the cutting with the circular saw blade 6 acts to wind up the wound copper clad laminate 1. Therefore, it is considered that the layer deviation of the rolled copper-clad laminate 1 at the time of cutting is less likely to occur, but the precision of the width dimension of the copper-clad laminate in the divided roll material obtained by cutting is improved.

Next, a second embodiment will be described. Second
In the embodiment of the present invention, in addition to the method of cutting the copper clad laminate of the first embodiment described above, as shown in FIG. 3, a stopper stopper 8 for preventing layer deviation at the time of cutting is provided to prevent the deviation. The stopper 8 is attached to both projecting shaft ends of the shaft 4 inserted into the winding core 3 of the roll material 2 so that the stopper 8 contacts the side surface of the roll material 2, and the roll material 2 is cut. . In FIG. 3, the cut portion is shown by a chain line,
No. 1, No. 2, No. The roll material 2 is cut by a circular saw blade in the order of the cutting points 3 in FIG. The stopper 8 is attached to the shaft body 4 by using a screw or the like.
It is desirable to install it so that it does not rattle.

In this case, since the deviation stoppers 8 attached to both protruding end portions of the shaft body 4 are in contact with the side surface portions of the roll material 2, the roll material 2 is cut at the time of cutting. The layer deviation of the copper clad laminate 1 is prevented, and the accuracy of the width dimension of the copper clad laminate in the divided roll material obtained by cutting is further improved. Further, it is more effective to prevent the layer shift of the copper clad laminate 1 by making the shift stopper 8 into contact with the entire side surface of the roll material 2. Further, the stopper stopper 8 is preferably made of a metal such as iron in terms of durability.

Next, a third embodiment will be described. Third
In the embodiment, in addition to the method for cutting the copper clad laminate of the first embodiment described above, when the roll material 2 is cut at a plurality of locations in the direction orthogonal to the axis of the winding core 3, Each of the outer peripheral surfaces of both roll ends of the roll material 2 is attached to the core 3
The roll hardnesses of both ends of the roll material 2 are compared by pushing with a finger toward the side. Then, the roll material 2 is cut in order from a cut portion closer to the roll end portion side having a softer winding hardness (not shown).

As the number of windings of the roll material 2 increases, a difference in the winding hardness of both roll ends easily occurs due to the influence of the plate thickness difference in the width direction of the long copper clad laminate 1. When the roll material 2 having a difference in winding hardness between both roll ends is cut by the rotating circular saw blade 6 in the direction orthogonal to the axis of the winding core 3, the winding hardness is However, there is a tendency that the layers of the copper clad laminate 1 deviate toward the side of the roll having the softer side. Therefore, in the cutting method of the third embodiment, cutting is performed in order from a cutting position closer to the roll end side having a softer winding hardness. Therefore, in this case, the cutting of the position where the layers are likely to be displaced can be finished before the phenomenon of the layers of the copper-clad laminated plate 1 being displaced, so that the copper-clad laminate 1 in the roll material after the division obtained by the cutting is cut.
The accuracy of the width dimension can be improved.

Next, a fourth embodiment will be described. Fourth
In the embodiment of the present invention, in addition to the method of cutting the copper clad laminate of the first embodiment described above, as shown in FIG. 4, a stopper stopper 8 for preventing layer deviation at the time of cutting is provided to prevent the deviation. The stopper 8 is attached only to one of the protruding shaft end portions of the shaft body 4 so that the stopper 8 contacts the side surface portion of the roll material 2. Then, by pressing the outer peripheral surfaces of both roll end portions of the roll material 2 toward the winding core side with fingers, the winding hardness when comparing the winding hardness of both roll end portions of the roll material 2 is soft. A stopper 8 for preventing misalignment is attached to one end of the roll. Furthermore, in the fourth embodiment,
The roll material 2 is cut in order from a cutting position farther from the end of the shaft body where the shift stopper 8 is arranged (a cutting position indicated by a chain line with No. 1 in FIG. 4) (No. 1). , No. 2, and No. 3 cutting positions).

In the fourth embodiment, the deviation stopper 8 is attached only to the end of the shaft on the side of the roll end having the softer winding hardness, and the end of the shaft with the stopper 8 disposed therein is arranged. Since the roll material 2 is cut by the rotating circular saw blade 6 in order from the cutting point farthest from the side, the labor for attaching the shift stopper 8 is reduced and the roll end having the softer winding hardness. Since the layers of the copper-clad laminate 1 can be prevented from shifting toward the side by the shift stopper 8, the cutting can be performed while preventing the layers of the copper-clad laminate 1 from shifting. Therefore, the accuracy of the width dimension of the copper clad laminate 1 in the divided roll material after cutting can be improved. Further, it is more effective to prevent the layer shift of the copper clad laminate 1 by making the shift stopper 8 into contact with the entire side surface of the roll material 2.

[0026]

EXAMPLES Example 1, Comparative Example 1 A roll material 2 was prepared by using a glass cloth substrate epoxy resin double-sided copper clad laminate having a thickness of insulating layer of 0.1 mm, a width of 518 mm and a length of 210 m (copper foil thickness: 18 μm). ), Winding tension 490
It was formed by winding N (50 kgf) on a paper tube which is the winding core 3. The tip of the end of winding was fixed to the roll material 2 with tape.

While rotating the roll material 2 at a rotation speed of 50 rpm, a circular saw blade having a diameter of 350 mm and a thickness of 4.0 mm, a rotation speed of 2000 rpm and a moving speed of 100 m
Cutting width 120 using a circular saw blade that rotates and moves at m / min.
It cut | disconnected to mm and obtained the four roll materials divided | segmented. In addition, there are 5 cutting points for the entire roll material 2,
Both ears were treated as mill ends.

In the first embodiment, the roll material 2 is rotated about the core 3 in the same direction as the direction in which the copper clad laminate 1 is wound on the core 3 while rotating the roll material 2 in the rotating direction. In Comparative Example 1, the roll material 2 is wound in a direction opposite to the winding direction in which the copper-clad laminate 1 is wound around the winding core 3. While rotating around the core 3, the roll material 2 is cut by the circular saw blade 6 rotating in the direction opposite to the rotating direction. The cutting order in both Example 1 and Comparative Example 1 is to wind both roll end portions of the roll material 2 by pressing the outer peripheral surfaces of both roll end portions of the roll material 2 toward the winding core with fingers. The hardness was compared, and the rolls were cut in order from the cut end near the roll end where the winding hardness is hard.

With respect to the four divided roll materials, the width of the copper clad laminate at the position shown in Table 1 from the outer circumference was measured with a caliper, and the width was most different from the standard cutting width of 120 mm. The values are shown in Table 1.

From the results shown in Table 1, the roll material 2 is rotated in the direction opposite to the rotation direction of the roll material 2 while rotating the copper clad laminate 1 in the same direction as the winding direction of the core 3. In the first embodiment in which the roll material 2 is cut by the circular saw blade 6, the roll material 2 is rotated in the direction opposite to the winding direction in which the copper clad laminate 1 is wound around the winding core 3. It was confirmed that the accuracy of the cutting width was improved as compared with Comparative Example 1 in which the circular saw blade 6 rotating in the direction opposite to the rotating direction of No. 2 cuts.

Example 2 A roll material 2 prepared in the same manner as the roll material 2 used in Example 1 was used in Example 2. And roll material 2
The outer peripheral surfaces of both roll end portions of No. 2 were pressed with fingers toward the winding core side, and the winding hardness of both roll end portions of the roll material 2 was compared. Then, as shown in FIG. 4, a stopper stopper 8 for preventing layer deviation at the time of cutting is provided on the protruding shaft end portion on the roll end portion side having a softer winding hardness.
Was attached so that the shift stopper 8 comes into contact with the side surface of the roll material 2. The shift stopper 8 is made of iron, and the roll material 2 is so arranged that the shift stopper 8 comes into contact with the entire side surface of the roll material 2.
A disk-shaped portion was used for abutting the side surface of the.

While rotating the roll material 2 at a rotation speed of 50 rpm, a circular saw blade having a diameter of 350 mm and a thickness of 4.0 mm, a rotation speed of 2000 rpm and a moving speed of 100 m
Using a circular saw blade that rotates and moves at a speed of m / min, cut into a cutting width of 120 mm in order from the cutting point farthest from the shaft body end side where the stopper stopper 8 is arranged, and cut into four divided roll materials. Got The cutting points were set at 5 points for the entire roll material 2, and both ears were treated as scraps.

In the second embodiment, as in the first embodiment, the roll material 2 is rotated about the core 3 in the same direction as the direction in which the copper clad laminate 1 is wound on the core 3. The circular saw blade 6 rotating in the direction opposite to the rotating direction of the roll material 2 is used for cutting.

With respect to the four divided roll materials, the width of the copper clad laminate at the position shown in Table 1 from the outer circumference was measured with a caliper, and the width was most different from the standard cutting width of 120 mm. The values are shown in Table 1.

From the results shown in Table 1, the deviation stopper 8 is attached to the protruding shaft end on the side of the roll end having a softer winding hardness, and the shaft end having the deviation stopper 8 arranged therein is arranged. It was confirmed that the cutting width of Example 2 in which cutting was performed in order from the side farther from the side was higher than that of Example 1 in which the shift stopper 8 was not arranged.

Example 3 A roll material 2 produced in the same manner as the roll material 2 used in Example 1 was used in Example 3. Regarding the order of cutting, in Example 3, the outer peripheral surfaces of both roll ends of the roll material 2 are pressed with fingers toward the winding core side to obtain the winding hardness of both roll end portions of the roll material 2. Compare
The roll material 2 was cut in the same manner as in Example 1 except that the cutting was performed in order from the cut portion close to the roll end on the softer winding hardness to obtain four divided roll materials. .

With respect to the four divided roll materials, the width of the copper clad laminate at the position shown in Table 1 from the outer circumference was measured with a caliper, and the width was most different from the standard cutting width of 120 mm. The values are shown in Table 1.

From the results shown in Table 1, in Example 3 in which the roll hardness on the soft winding side was closer to the cut end, the roll hardness on the hard winding side was closer to the roll end. It was confirmed that the accuracy of the cutting width was improved as compared with Example 1 in which the cutting was performed in order.

[0039]

[Table 1]

[0040]

According to the method of cutting a copper clad laminate of the present invention according to claims 1 to 4, a long copper clad laminate is formed by winding it around a cylindrical winding core in a roll shape. When the roll material is cut in a direction orthogonal to the axis of the winding core by using a rotating circular saw blade, the width dimension accuracy of the copper clad laminate in the divided roll material obtained by cutting is improved. be able to.

[Brief description of drawings]

FIG. 1 is a schematic diagram showing an entire apparatus for carrying out an embodiment of the present invention.

FIG. 2 is a perspective view showing a rotation direction of a roll material and a rotation direction of a circular saw blade in the first to fourth embodiments.

FIG. 3 is a stopper stopper 8 according to the second embodiment.
FIG. 3 is a plan view showing a mounting state of FIG.

FIG. 4 is a shift stopper 8 according to a fourth embodiment.
FIG. 3 is a plan view showing a mounting state of FIG.

[Explanation of symbols]

1 Copper clad laminate 2 roll material 3 winding core 4-axis body 6 circular saw blade 8 Misalignment stopper

Claims (5)

[Claims] 1. A roll material formed by winding a long copper clad laminate around a cylindrical core with a rotating circular saw blade in a roll shape in a direction orthogonal to the axis of the core. A method for cutting a copper-clad laminate, which comprises rotating a roll material in the same direction as the winding direction of the copper-clad laminate about a winding core while rotating the roll material in the opposite direction to the rotation direction of the roll material. A method for cutting a copper clad laminate, which comprises cutting with a circular saw blade. 2. A roll material is inserted into the winding core to support the winding core and to rotate the shaft body with the shaft body end portions protruding on both sides of the winding core to rotate the roll material. Rotate around the center of the shaft and attach stoppers to both sides of the shaft so that the stoppers contact the side of the roll material. The method for cutting a copper clad laminate according to claim 1, wherein the roll material is cut. 3. When the roll material is cut at a plurality of positions in a direction orthogonal to the axis of the winding core, the outer peripheral surfaces of both roll end portions of the roll material are pushed with fingers toward the winding core side. According to the method, the winding hardness of both end portions of the roll material is compared, and the roll material is cut in order from a cutting portion closer to the roll end portion side having a softer winding hardness. A method for cutting a copper-clad laminate as described. 4. A roll material is inserted into a winding core to support the winding core, and by rotating a shaft body having shaft body end portions projecting to both sides of the winding core, the roll material is rolled. Rotate around the center of the shaft, and install a stopper to prevent layer deviation during cutting so that the stopper stops contact the side of the roll material only on one end of the shaft. And the one shaft end portion is
The roll with the softer winding hardness when comparing the winding hardness of both roll ends of the roll material by pressing the outer peripheral surface of both roll ends of the roll material toward the winding core side with fingers It is the shaft end on the end side, and further in order from the cutting point far from the shaft end side where the stopper is arranged,
The method for cutting a copper-clad laminate according to claim 1, wherein the roll material is cut. 5. The method for cutting a copper clad laminate according to claim 2, wherein the shift stopper is a stopper that abuts the entire side surface of the roll material.