JP2002068541A - Joint method of sheet material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a joint method of a sheet material capable of allowing mutual end surfaces of the sheet material such as a coppered laminated plate worked into a printed circuit board to closely abut to each other. SOLUTION: A lengthwise directional end part of one sheet material 1 and a lengthwise directional end part of the other sheet material 2 are superposed on each other. A superposed part of both sheet materials 1 and 2 is fixed by a clamp device 3. The superposed part of both sheets 1 and 2 is vertically cut in the lengthwise direction of both sheet materials 1 and 2 by a cutter 4. Next, a cutting end surface of one sheet material 1 and a cutting end surface of the other sheet material 2 are allowed to abut to each other. Afterwards, a pressure sensitive adhesive tape 6 is stuck by straddling between both sheet materials 1 and 2 by a sticking device 5 so as to cover an abutting place of both sheet materials 1 and 2, and both sheet materials 1 and 2 are joined together.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining spliced sheet materials such as a copper-clad laminate processed into a printed wiring board.

[0002]

2. Description of the Related Art For example, when manufacturing a printed wiring board or the like, a rolled copper-clad laminate or the like is used.
That is, a long copper-clad laminate is wound around a roll until it reaches a desired length in the longitudinal direction, and then conveyed as necessary, where a circuit is formed at the destination to be processed into a printed wiring board or the like. Is what is done. At this time, if a long sheet material such as a copper-clad laminate is less than a desired length, it is necessary to join other sheet materials of the same type to compensate for the shortage. Therefore, conventionally, when joining roll-shaped sheet materials, the end surface of one sheet material and the end surface of the other sheet material are brought into contact with each other, and an adhesive tape is stuck at the abutting position between the two sheet materials. I was trying to do it.

However, the end faces of the sheet materials are not always cut perpendicularly to the longitudinal direction. Each end face of both sheet materials is aligned with the side edges of the sheet materials along the longitudinal direction. However, there is a case where a gap is formed between the end surfaces of the two sheet materials even if the contact is made. If a gap is created between the end surfaces of both sheet materials in this way, there will be places on the adhesive surface of the pressure-sensitive adhesive tape that is stuck between the two sheet materials, which will not be attached to any of the sheet materials. However, there has been a problem that the effect of joining by the adhesive tape cannot be sufficiently obtained. For this reason, an operator uses scissors to cut the sheet material so that the end face is perpendicular to the longitudinal direction.

[0004]

However, the above work is performed manually, and the quality of the work depends on the skill of the worker. Vertically cut sheet material is not always available. That is, when the level of skill of the worker is low, the quality of the work is degraded, and when joining the two sheet materials, a gap often occurs between the end faces of the two sheet materials.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has an advantage in that a sheet material, such as a copper-clad laminate, which is processed into a printed wiring board or the like, can be brought into contact with each other without any gaps. It is intended to provide a method.

[0006]

According to a first aspect of the present invention, there is provided a method for joining sheets according to the first aspect of the present invention, in which a longitudinal end of one sheet material 1 and a longitudinal end of another sheet material 2 are overlapped. At the same time, the overlapping portion of the two sheet materials 1 and 2 is fixed by the clamp device 3, and then the overlapping portion of the two sheet materials 1 and 2 is cut by the cutting device 4. And the cut end surface of the other sheet material 2 is brought into contact, and thereafter, the adhesive tape 6 is straddled between the two sheet materials 1 and 2 by the sticking device 5 so as to cover the contact position of the two sheet materials 1 and 2. It is characterized by sticking and joining the two sheet materials 1 and 2 together.

[0007]

Embodiments of the present invention will be described below.

FIG. 1 shows an embodiment of the present invention. In the present invention, as the sheet material, for example, a long copper-clad laminate can be used. As this copper-clad laminate, for example, a relatively thin and flexible material obtained by laminating a copper foil on one or both surfaces of one prepreg is used. A sheet material such as a copper-clad laminate can be wound around a roll by making it long, so that it can be easily handled. Need to be joined. Therefore, such joining of sheet materials is performed as follows.

The roll 7 around which the sheet material 1 having a length less than the desired length is wound and the roll 8 around which the sheet material 2 for making up for the shortage are wound are arranged such that their rotation axes are parallel to each other. Arrange.

Between the two rolls 7,8, there is provided a supporting cylinder 9 which can prevent and fix the movement of the sheet material 1,2 unwound from the rolls 7,8. At least one material 1 and 2 are provided. The supporting cylinder 9 is provided with a supporting piston 10 movable toward the sheet materials 1 and 2 in a direction perpendicular to the surfaces of the sheet materials 1 and 2. A support piece 11 having a plane parallel to the surfaces of the sheet materials 1 and 2 is formed.

A clamp device 3 composed of two clamp bodies 3a and 3b facing each other with a sheet material interposed therebetween is arranged between the two rolls 7 and 8, and the clamp device 3 is provided with a driving device 17 Thus, the sheet members 1 and 2 are formed so as to be movable in the longitudinal direction. This clamping device 3
Is a method in which a longitudinal end of one sheet material 1 and a longitudinal end of the other sheet material 2 are overlapped, and movement of the overlapped portion of the two sheet materials 1 and 2 is prevented and fixed. It is. Fixing cylinders 14 are arranged in parallel with each other on the two clamp bodies 3a and 3b constituting the clamp device 3. Each fixing cylinder 14 is provided with a fixing piston 15 movable toward the sheet materials 1 and 2 in a direction perpendicular to the surfaces of the sheet materials 1 and 2. A fixing piece 16 having a plane parallel to the surfaces of the sheet materials 1 and 2 is formed.

Further, each clamp body 3a,
A cutting device 4 having a cutting tool 12 for cutting the overlapped portion of the two sheet materials 1 and 2 is substantially opposed to each other between the fixing cylinders 14 arranged side by side in the sheet material 3b. The sheet members 1 and 2 are formed so as to be movable in the longitudinal direction. Here, the cutting device 4 and the clamp device 3 may be independently movable as separate members, but the cutting device 4 and the clamp device 3
It is preferable that both are integrally formed because the two devices 3 and 4 can be simultaneously moved by the driving device 17, so that the splicing device and the splicing process can be simplified. In FIG. 1, the cutting device 4 and the clamp device 3 are integrally formed. The cutting tool 12 of the cutting device 4 has a flat plate shape, and is formed so as to be movable in a direction perpendicular to the surfaces of the sheet materials 1 and 2 while maintaining perpendicular to the surfaces of the sheet materials 1 and 2. At this time, the leading edge serving as a cutting edge is preferably oriented in a direction perpendicular to the longitudinal direction of the sheet materials 1 and 2, but is not particularly limited.

Two sticking devices 5 having an adhesive tape 6 for sticking the two sheet materials 1 and 2 are opposed to each other between the two rolls 7 and 8 with the sheet materials 1 and 2 interposed therebetween. As a result, it is formed so as to be movable in the longitudinal direction of the sheet materials 1 and 2 and in the direction perpendicular to the longitudinal direction of the sheet materials 1 and 2 (hereinafter also referred to as “the width direction of the sheet materials 1 and 2”). ing. Here, the attaching device 5 and the clamp device 3 may be independently movable in the longitudinal direction of the sheet materials 1 and 2, but the driving device 17 moves the sheet material 1 and 2 in the longitudinal direction. It is preferable to be formed so as to be able to move at the same time, because simplification of the splicing device and simplification of the splicing process can be achieved. That is, the apparatus shown in FIG. 1 has a cutting apparatus 4 and a clamping apparatus 3a (3b) integrally formed, and further has an adhering apparatus 5 provided movably in the width direction of the sheet materials 1 and 2. It will be described below based on this. Sticking device 5
A sticking piston 13 that is movable in a direction perpendicular to the surfaces of the sheet members 1 and 2 is formed toward the sheet members 1 and 2, and a rotating shaft is provided at the tip of the sticking piston 13. A roll-shaped long adhesive tape 6 is rotatably provided so as to be parallel to the longitudinal direction of the materials 1 and 2.

Next, the splicing process of the two sheet materials 1 and 2 will be described step by step.

First, as shown in FIG. 1 (a), one of the rolls 7 is rotated in the direction of the arrow to feed out the sheet material 1, and the other roll 8 is rotated in the direction of the arrow to feed out the sheet material 2. The longitudinal ends of the sheet materials 1 and 2 are overlapped with each other.

Next, the rotation of both rolls 7, 8 is stopped,
The respective sheet materials 1 and 2 are fixed using the supporting cylinder 9, and the overlapping portion of the two sheet materials 1 and 2 is fixed using the clamp device 3. If the two sheet materials 1 and 2 are loose, the rolls 7 and 8 are rotated in the direction opposite to the arrow to remove the looseness of the two sheet materials 1 and 2 and then fixed.

In fixing the sheet materials 1 and 2 unwound from the rolls 7 and 8 with the supporting cylinder 9,
A support base (not shown) is disposed in advance at a position facing the support cylinder 9 via the sheet materials 1 and 2, and the flat support surface of the support base (not shown) is placed on one of the sheet materials 1 and 2. In contact with the surface. Then, the support piston 10 is moved toward the sheet materials 1 and 2, and the support piece 11 is moved to the sheet materials 1 and 2.
Of the sheet materials 1, 2,
Can be fixed by being sandwiched between the support piece 11 and a support base (not shown). By using the supporting cylinder 9 in this manner, the sheet materials 1 and 2 fed from the rolls 7 and 8 can be fixed. In FIG. 1, one support cylinder 9 is provided for each of the sheet materials 1 and 2 of each of the rolls 7 and 8, but the number of the support cylinders is not particularly limited. Instead of (not shown), the supporting cylinder 9 is used, and the sheet materials 1 and 2 are
2 may be pinched and fixed.

On the other hand, when the overlapping portion of the two sheet materials 1 and 2 is fixed by the clamp device 3, the fixing piston 15 of each of the clamp bodies 3a and 3b is moved toward the sheet materials 1 and 2 to completely fix them. This is performed by bringing the piece 16 into contact with the surfaces of the sheet materials 1 and 2. At this time, the overlapping portions of the sheet materials 1 and 2 are sandwiched and fixed by the two fixing pieces 16 facing each other via the sheet materials 1 and 2. The area of the overlapped portion is not particularly limited as long as the overlapped portion of both sheet materials 1 and 2 can be clamped and fixed by all the fixing pieces 16 of the clamp bodies 3a and 3b.

Then, as described above, the two sheet materials 1, 2
Is fixed, the overlapped portion of the two sheet materials 1 and 2 is cut as shown in FIG. When cutting the overlapped portion of the two sheet materials 1 and 2 with the cutting device 4, the blades 12 of the cutting device 4 opposed to each other via the sheet materials 1 and 2 are moved toward the sheet materials 1 and 2, respectively. Can be done by At this time, the leading edge of one blade 12 does not contact the leading edge of the other blade 12, but slides on one surface of the other blade 12. Then, the cutting operation is completed by returning the blade 12 to the original position. As a result, it is possible to obtain a cut end face of each of the sheet materials 1 and 2 that is perpendicular to the longitudinal direction of the sheet materials 1 and 2, and even if the cut end faces of the two sheet materials 1 and 2 are brought into contact with each other, a gap is formed. Will not be seen at all. Although what has been described here is such that the cut end faces of the respective sheet materials 1 and 2 are perpendicular to the longitudinal direction of the sheet materials 1 and 2, the present invention is not limited to this. In other words, in the present invention, it is important to cut two overlapped portions of the two sheet materials 1 and 2 at the same time with the same blade 12, thereby completely reducing the shape of the cut edges of the two sheet materials 1 and 2. They can be the same. Therefore, when joining the two sheet materials 1 and 2, the cut end faces can be brought into contact with no gap.

After the cutting of the superposed portion of the sheet materials 1 and 2 is completed, the fixing piston 15 of the clamp bodies 3a and 3b is moved to separate the fixing piece 16 from the sheet materials 1 and 2, Release the fixing of the overlapping part of the materials 1 and 2. Unnecessary cut pieces generated by the cutting at this time can be removed using a hoist (not shown) or the like as necessary. Here, the abutting portion has a linear shape perpendicular to the longitudinal direction of the sheet materials 1 and 2 and has the same length as the width of the sheet materials 1 and 2. The shape of the contact point is not limited to this.

Thereafter, an adhesive tape 6 is attached to a contact portion between the two sheet materials 1 and 2 to join the two sheet materials 1 and 2 together. At this time, the two sheet materials 1 and 2 are fixed by the supporting cylinder 9. When the two sheet materials 1 and 2 are joined by the attaching device 5, the attaching device 5 is attached to the sheet material 1 such that the adhesive tape 6 is positioned above one end of the contact point between the two sheet materials 1 and 2. The sheet materials 1 and 2 are appropriately moved in the longitudinal direction and are appropriately moved in the width direction of the sheet materials 1 and 2. Next, the sticking piston 13 is moved toward the sheet materials 1 and 2, and the adhesive surface at the end of the adhesive tape 6 is stuck to the end of the contact portion of the sheet material 1 and 2. Thereafter, by moving the sticking device 5 toward the other end of the abutting portion, the adhesive tape 6 is continuously fed out, and the abutting portion can be continuously covered with the adhesive tape 6. The two sheet materials 1 and 2 can be joined together. FIG. 1C shows a state in which the adhesive surface of the pressure-sensitive adhesive tape 6 is in contact with the contact portion between the two sheet materials 1 and 2. Further, in the present invention, when performing the sticking with the adhesive tape 6, the adhesive tape 6 may be stuck between the two sheet materials 1 and 2 so as to cover the contact portions of the two sheet materials 1 and 2. It is necessary, and the shape of the adhesive tape 6 to be used or the sticking direction of the adhesive tape 6 is not limited as described above.

After the joining of the sheet materials 1 and 2 is completed, the adhesive tape 6 is cut in the vicinity of the end of the abutting portion, and the sticking piston 13 is moved so that the adhesive tape not used for the joining is formed. 6 is separated from the sheet materials 1 and 2. The rolls 7 and 8 can be rotated by releasing the fixing by the support piston 10. By rotating the rolls 7 and 8 as necessary, the sheet material 1 having a desired length can be obtained. The wound roll 7 can be obtained.

In the sheet materials 1 and 2 that have been subjected to the splicing as described above, since the two sheet materials 1 and 2 are in contact with no gap at the contact point, the adhesive surface of the adhesive tape 6 may be any one. The sheet material 1 and 2 are always stuck to each other, and there is no portion that is not stuck to any of the sheet materials 1 and 2, so that the effect of joining by the adhesive tape 6 can be sufficiently obtained. Things.

[0024]

As described above, according to the method for splicing a sheet material according to the first aspect of the present invention, the longitudinal end of one sheet is overlapped with the longitudinal end of the other sheet. After the overlapping portion of both sheet materials is fixed by a clamp device, the overlapping portion of both sheet materials is cut by a cutting device, and then the cut end surface of one sheet material and the cut end surface of the other sheet material are contacted. After that, the adhesive tape is stuck between the two sheet materials by a sticking device so as to cover the abutting point of both sheet materials, and the two sheet materials are joined together. By cutting two sheets at the same time with the same blade, the shapes of the cutting edges of both sheet materials can be made exactly the same. Let it be It is those that can. In addition, the adhesive surface of the adhesive tape is always adhered to any sheet material, and there is no portion that is not adhered to any sheet material, so that the effect of joining by the adhesive tape is sufficiently obtained. Is what you can do.

[Brief description of the drawings]

FIG. 1 shows an example of an embodiment of the present invention,
(A) thru | or (c) are schematic front views of the joining process of both sheet materials.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet material 2 Sheet material 3 Clamping device 4 Cutting device 5 Adhesion device 6 Adhesive tape

Claims (1)

[Claims] 1. A longitudinal end of one sheet material and a longitudinal end of the other sheet material are overlapped,
After the overlapping portion of both sheet materials is fixed with a clamp device, the overlapping portion of both sheet materials is cut by a cutting device, and then the cut end surface of one sheet material and the cut end surface of the other sheet material are brought into contact. And after that, an adhesive tape is stuck between the two sheet materials by an adhering device so as to cover the abutting portion of the two sheet materials, and the two sheet materials are joined together. .