JP5717002B2 - Cutting device - Google Patents

Description

  The present invention relates to a cutting device, and more specifically, a resin sheet larger than a substrate bonded to the surface of various substrates having a rectangular shape in plan view, such as a glass plate, a resin plate, a metal plate, or a ceramic plate, is adapted to the substrate size. The present invention relates to a cutting device used when cutting to a specified size.

  For example, as a panel for plasma display (PDP), which is a kind of flat panel display (FPD), and a panel for various electric and electronic devices such as a panel for touch panel, a rectangular shape in a plan view such as a glass plate or a resin plate is used. In some cases, an optical film having a multilayer structure or a resin sheet such as a lens sheet having an uneven shape on the surface (hereinafter referred to as a composite panel) is used on the surface of the substrate. In the manufacturing process of this type of composite panel, a process of cutting the resin sheet into a size suitable for the substrate size is executed.

  The cutting of the resin sheet may be performed before being bonded to the substrate, or may be performed after being bonded to the substrate. However, if the resin sheet is cut before bonding to the substrate, it is necessary to perform the bonding operation of the resin sheet while paying special attention to the relative position of the resin sheet with respect to the substrate. There is a problem that it cannot be increased efficiently. Therefore, after pasting a resin sheet of a size larger than the substrate on the surface of the substrate, the resin sheet is cut along the end surface of the substrate to cut off the excess resin sheet protruding outside the substrate, It is common to follow the procedure of finishing to a size suitable for the substrate size (to obtain a composite panel obtained by bonding a substrate having the same size and a resin sheet).

  When cutting the resin sheet in the above-described mode, for example, as described in Patent Document 1 below, it is conceivable to cut a cutting blade disposed on the resin sheet side into the resin sheet. The cutting accuracy of the resin sheet depends on the relative positional accuracy of the cutting blade with respect to the substrate and the resin sheet, but the cutting machine described in Patent Document 1 requires a complicated mechanism for positioning the cutting blade. The cutting machine becomes complicated and large. Therefore, for example, as shown in FIG. 5A, the cutting blade 104 whose axis is kept parallel to the end surface 100b of the substrate 100 is guided by the end surface 100b of the substrate 100, or as shown in FIG. As described above, the cutting blade 104 and the substrate 100 are relatively moved in a horizontal plane while the cutting blade 104 inclined at a predetermined angle with respect to the end surface 100b of the substrate 100 is guided by the edge 100c on the surface 100a side of the substrate 100. Therefore, the resin sheet 101 bonded to the surface 100a of the substrate 100 is often cut into a predetermined size. Note that the cutting blade 104 used in each drawing of FIG. 5 has a double-edged blade portion (having a cutting edge formed at the intersection of inclined blade surfaces inclined in opposite directions).

JP 2008-119794 A

  However, if the cutting operation proceeds in the mode shown in FIG. 5A, the resin sheet 101 cannot be accurately cut into a size suitable for the substrate size as shown in FIG. There is a problem that burrs 101b are easily formed on the cut surface 101a of the resin sheet 101 on the side to be. Further, even when the cutting operation is performed in the mode shown in FIG. 5C, as shown in FIG. 5D, the burr 101b is easily formed on the cut surface 101a of the resin sheet 101 on the product side. There is a problem. Furthermore, when the resin sheet 101 to be cut is a laminate of the sheets 102 and 103, the interface 102 between the sheets 102 and 103 is likely to be peeled off at the cut surface 101a of the resin sheet 101 on the product side. There is also a problem.

  In view of such circumstances, the object of the present invention is to accurately cut the resin sheet bonded to the surface of the substrate into a size suitable for the substrate size without causing a problem in both the substrate and the resin sheet. To provide a cutting device.

  The present invention devised to achieve the above object is in accordance with the first cutting blade fixedly provided along the end surface of the substrate in a state where the back surface of the substrate is supported by the support portion from the lower side. A cutting device for cutting a resin sheet by causing a shearing force to act on a resin sheet larger than the substrate bonded to the surface of the substrate by sliding the second cutting blade disposed above the substrate. Both of the first and second cutting blades have a single-edged blade portion, and the first cutting blade is adapted so that the end surface of the substrate is in contact with the flat surface portion opposite to the inclined blade surface of the blade portion. The second cutting blade is slidably moved in a state where the flat portion opposite to the inclined blade surface of the blade portion faces the inclined blade surface of the first cutting blade. The blade is held in an inclined posture inclined with respect to the first cutting blade. The features.

  The “substrate” in the present invention means a plate material having a predetermined thickness (cut into a rectangular shape) having a rectangular shape in plan view, such as a glass plate, a resin plate, a metal plate, or a ceramic plate. The “resin sheet” is a concept including not only a single-layer resin sheet but also a resin sheet having a multilayer structure. Furthermore, “the first cutting blade is fixed to the support portion in a vertical posture so that the end surface of the substrate fits and abuts the flat surface portion opposite to the inclined blade surface of the blade portion” Referring to FIG. 3 showing the embodiment of the invention, “the substrate P having the surface Pa on which the resin sheet S is bonded to the flat surface portion 23 constituting the one-sided blade portion 21 of the first cutting blade 20. When the end face Pc is brought into contact, the first cutting blade 20 is vertically positioned so that the cutting edge of the cutting blade 20 and the surface Pa side corner portion of the substrate P are located at substantially the same height (the same height in FIG. 3). It is fixed to the support portion 13 in a posture ”.

  As described above, in the cutting apparatus according to the present invention, the first cutting blade having a single-edged blade portion is used as the first cutting blade fixedly provided along the end surface of the substrate, and the first cutting blade is used as the blade. Since the end surface of the substrate is fixed to the support portion in a vertical position so that the end surface of the substrate is in contact with the flat surface portion opposite to the inclined blade surface of the portion, the first end surface of the substrate is protected with the first cutting blade. The sliding movement of the two cutting blades with respect to the first cutting blade, that is, the cutting operation of the resin sheet can be executed. Therefore, the cutting operation of the resin sheet can be performed without causing a problem on the end face of the substrate.

  In addition, the second cutting blade is in a state in which the flat portion constituting the one-blade blade portion faces the inclined blade surface of the first cutting blade fixed in the above-described manner (the inclined blade surface of the first cutting blade and Since it is held in an inclined posture inclined with respect to the first cutting blade so as to slide along the first cutting blade in a state of surface contact or close proximity, the resin sheet is adapted to the substrate size Can be cut accurately to the size. In particular, if the second cutting blade is slid along the first cutting blade in a state in which the plane portion thereof is in surface contact with the inclined blade surface of the first cutting blade, the first cutting blade and the second cutting blade are cut. Since a shearing force can be applied to the cutting target portion of the resin sheet sandwiched between the blades at a pinpoint, the resin sheet can be cut very accurately, which is preferable. In addition, according to the configuration of the present invention described above, the resin sheet is in a state in which the inclined blade surface of the second cutting blade is not in contact with the cut surface of the resin sheet on the product side (the side bonded to the substrate). Therefore, compressive stress and tensile stress do not act on the cut surface of the resin sheet on the product side. Therefore, it is possible to avoid problems such as burrs and interface peeling on the cut surface of the resin sheet on the product side.

  In the above configuration, as the second cutting blade, it is possible to use a round blade in which the blade portion is provided in an annular shape and rotatably held in the inclined posture.

  According to such a configuration, it is possible to cut the resin sheet accurately and efficiently by continuously applying a shearing force to the resin sheet without providing a complicated mechanism.

  As described above, according to the cutting device according to the present invention, a defect is caused in the substrate and the resin sheet larger than the substrate bonded to the surface of the substrate (particularly, the cut surface of the resin sheet on the product side). Without cutting, the resin sheet can be accurately cut into a size suitable for the substrate size.

It is a partial schematic front view of the cutting device concerning the embodiment of the present invention. It is a schematic front view including the partial cross section of the cutting device which concerns on embodiment of this invention. FIG. 3 is an enlarged view of a main part of FIG. 2. It is a figure which shows typically a mode at the time of cut | disconnecting the lamination type resin sheet bonded together on the surface of the board | substrate using the cutting device shown in FIG. (A)-(d) figure is a figure which shows typically the cutting method of the conventional resin sheet.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS.

  FIG. 1 is a partial schematic plan view of a cutting device 1 according to an embodiment of the present invention, and FIG. 2 is a schematic front view including a partial cross section of the cutting device 1 (a view in the direction of arrow A shown in FIG. 1). Indicates. The cutting device 1 protrudes outside the substrate P by cutting the resin sheet S larger than the substrate P bonded to the surface Pa of the substrate P having a rectangular shape in plan view along the end surface Pc of the substrate P. The excess of the resin sheet S is cut off, and the resin sheet S is finished to a size suitable for the substrate size (to obtain a composite panel of the substrate P and the resin sheet S having the same size). The movable body 30 is provided so as to be movable with respect to the stationary body 10.

  In this embodiment, a glass plate (glass substrate) is used as the substrate P, but a resin plate, a metal plate, a ceramic plate, or the like can be used as the substrate P. Further, in the present embodiment, as the resin sheet S, as shown in FIG. 4, a laminated type in which a first layer S1 and a second layer S2 formed of different materials are laminated (FIG. 4). 1 to 3 are not shown in detail. By the way, the first layer S1 bonded to the surface Pa of the substrate P is made of, for example, PET (polyethylene terephthalate), and the second layer S2 is made of, for example, a UV curable resin, and has numerous minute irregularities formed on the surface. It is assumed that. As the resin sheet S, a single layer type may be used. That is, in the cutting apparatus 1 according to the present invention, the resin sheet S to be bonded to the surface Pa of the substrate P is a laminated type or a single layer type, regardless of what material the substrate P is formed of. In any case, the resin sheet S can be used preferably when it is cut.

  The stationary body 10 is fixedly provided along a base 11, a support portion 13 fixed on the base 11, and an end surface Pc of the substrate P (a concave groove shape formed on the side surface of the support portion 13. A main part is a first cutting blade 20 (fixed to the escape portion 13b) and a guide rail 12 linearly laid on the base 11 in parallel with the end face Pc (first cutting blade 20) of the substrate P. Composed. The support part 13 is formed in a rectangular parallelepiped shape, and the upper surface 13a as a support surface for directly supporting the back surface Pb of the substrate P from below is finished to be a smooth surface. Thereby, when cutting operation of the resin sheet S is performed, a situation in which minute defects such as scratches are formed on the back surface Pb of the substrate P is prevented as much as possible. From the viewpoint of surely preventing a minute defect from being formed on the back surface Pb of the substrate P when the resin sheet S is cut, the upper surface 13a of the support portion 13 that functions as at least the support surface of the substrate P. Is preferably made of an elastic material such as resin or rubber.

  The first cutting blade 20 is a long flat blade in which the blade portion 21 extends in parallel with the guide rail 12, and as shown in an enlarged view in FIG. 3, the blade portion 21 has an inclined blade surface (inclined A single-edged shape comprising a blade surface) 22 and a flat surface portion 23 provided on the opposite side of the inclined blade surface 22. And this 1st cutting blade 20 is the vertical attitude | position which made the front-end | tip part (blade edge) of the blade part 21 protruded predetermined amount upwards from the upper surface 13a of the support part 13, and the plane part 23 is recessed on the side surface of the support part 13. It is fixed to the support portion 13 so as to abut on the groove-shaped escape portion 13b. The amount of protrusion from the upper surface 13a of the support portion 13 of the cutting edge of the first cutting blade 20 (based on the upper surface 13a) is adapted to abut the end surface Pc of the substrate P when the cutting operation of the resin sheet S is performed. Here, it is set to the same value as the thickness of the substrate P. Moreover, in this embodiment, the 1st cutting blade 20 is being fixed to the support part 13 with fastening members 14, such as a screw and a volt | bolt. However, the fixing method of the first cutting blade 20 to the support portion 13 is arbitrarily selected as long as the fixing strength that can prevent the relative movement of both the members 20 and 13 during the cutting of the resin sheet S can be secured. For example, the first cutting blade 20 may be fixed to the support portion 13 by another fixing method such as adhesive fixing. In addition, from the viewpoint of facilitating the replacement operation of the first cutting blade 20, it is desirable that the first cutting blade 20 is fixed to the support portion 13 by the fastening member 14 as in the present embodiment.

  The movable body 30 is fixed to the slide block 31 that slides along the guide rail 12, the rotating body 33 that holds the second cutting blade 40 disposed above the first cutting blade 20, and the upper portion of the slide block 31. And a bearing (rolling bearing) 32 that rotatably supports the rotating body 33. The rotating body 33 is configured with a shaft part 34 having a flange part 35, a second cutting blade 40, and a retaining part 36 as main parts, and the second cutting blade 40 is sandwiched between the flange part 35 and the retaining part 35. In this manner, the shaft portion 34 is fixed (held) at a predetermined position in the axial direction. An upper portion of the slide block 31 is provided with an inclined support portion 31a whose upper surface is inclined with respect to a horizontal plane, and the bearing 32 is fixedly attached to the upper surface of the inclined support portion 31a. Therefore, the axis line of the bearing 32 (the axis line of the shaft part 34 constituting the rotating body 33) is inclined by a predetermined angle with respect to the horizontal plane.

  As shown in an enlarged view in FIG. 3, the second cutting blade 40 is a single-edged blade comprising an inclined blade surface (inclined blade surface) 42 and a flat portion 43 provided on the opposite side of the inclined blade surface 42. The blade portion 41 is a round blade provided with an annular shape. The second cutting blade 40 made of a round blade is in a state where a flat surface portion 43 (a predetermined region on the blade tip side of the flat surface portion 43) that constitutes the blade portion 41 faces the inclined blade surface 22 of the first cutting blade 20 ( In the present embodiment, as shown in FIG. 3, the flat portion 43 of the second cutting blade 40 is in sliding contact with the first cutting blade 20 in a state of being in surface contact with the inclined blade surface 22 of the first cutting blade 20. As shown, the outer periphery of the shaft portion 32 is fixed in an inclined posture inclined with respect to the first cutting blade 20. Here, the inclination angle of the upper surface of the inclined support portion 31a with respect to the horizontal plane is set to the same value as the included angle of the blade portion 21 of the first cutting blade 20 (the angle formed by the inclined blade surface 22 and the flat portion 23). Since the shaft portion 34 holding the second cutting blade 40 is rotatably supported by the bearing 32 fixed to the upper surface of the inclined support portion 31a, the second cutting blade 40 is held in the above manner.

  The cutting device 1 according to the present invention mainly has the above configuration, and cuts a resin sheet S larger than the substrate P bonded to the surface Pa of the substrate P along the end surface Pc of the substrate P as follows. .

  First, as shown in FIGS. 1 and 2, a composite panel in which a resin sheet S larger than the substrate P is bonded to the surface Pa of the substrate P is set at a predetermined position of the cutting device 1. Specifically, the composite panel is placed on the support portion 13, the back surface Pb of the substrate P is supported from below by the upper surface 13 a of the support portion 13, and the end surface Pc of the substrate P is the plane of the first cutting blade 20. It abuts on the part 23. At this time, the movable body 30 (slide block 31) is arranged on one end side of the guide rail 12 in the longitudinal direction. When the slide block 31 is slid toward the other end in the longitudinal direction of the guide rail 12, the second cutting blade 40 is slid and moved along the blade portion 21 of the first cutting blade 20. Along with this, a shearing force sequentially acts on the resin sheet S, and the resin sheet S is sequentially cut along the end face Pc of the substrate P. When the slide block 31 reaches the other end in the longitudinal direction of the guide rail 12, the cutting operation for one side of the resin sheet S is completed. Thereafter, if the cutting operation for the other side of the resin sheet S is executed as necessary, the resin sheet S is finished to a size suitable for the size of the substrate P, and a composite of the substrate P and the resin sheet S having the same size is obtained. A panel is obtained.

  In the cutting device 1 according to the present invention, as shown in an enlarged view in FIG. 3, the first cutting blade 20 that is fixedly provided along the end surface Pc of the substrate P is used and has a single-edged blade portion 21. And this 1st cutting blade 20 was fixed to the support part 13 with the vertical attitude | position so that the end surface Pc of the board | substrate P might fit and contact | abut to the plane part 23 on the opposite side to the inclined blade surface 22 of the blade part 21. FIG. Accordingly, the second cutting blade 40 is slid relative to the first cutting blade 20 with the end face Pc of the substrate P protected by the first cutting blade 20, that is, the cutting operation for surplus resin sheet S. Can be executed. Therefore, the cutting operation of the resin sheet S can be performed without causing a problem in the substrate P, particularly the end surface Pc thereof.

  In addition, the second cutting blade 40 slides along the first cutting blade 20 in a state in which the flat portion 43 constituting the one-blade blade portion 41 faces the inclined blade surface 22 of the first cutting blade 20. Thus, the resin sheet S is held along the end surface Pc of the substrate P (the resin sheet S is outward from the end surface Pc of the substrate P). Can be cut accurately (so as not to protrude). In particular, in the present embodiment, the second cutting blade 40 is slid along the first cutting blade 20 in a state where the flat portion 43 is in surface contact with the inclined blade surface 22 of the first cutting blade 20. Therefore, a shearing force can be applied to the cutting target portion of the resin sheet S sandwiched between the first cutting blade 20 and the second cutting blade 40 at a pinpoint. Therefore, the resin sheet S can be cut very accurately.

  Moreover, if the 2nd cutting blade 40 is hold | maintained in the said aspect, the slanting blade surface 42 of the 2nd cutting blade 40 will not contact the cutting surface Sa of the resin sheet S by the side of the product at all. Since cutting work can be performed, compressive stress and tensile stress do not act on the cut surface Sa of the resin sheet S on the product side. Therefore, as shown in FIG. 4, it is difficult to form burrs on the cut surface Sa of the resin sheet S on the product side. Moreover, in this embodiment, although the lamination | stacking type formed by laminating | stacking 1st layer S1 and 2nd layer S2 is used as the resin sheet S, since cutting work advances in the said aspect, it is a product among resin sheets S. In the cut surface Sa of the resin sheet S on the side to be, the first layer S1 and the second layer S2 are difficult to be peeled off at the interface. Note that there is a possibility that interface separation occurs between the first layer S1 and the second layer S2 on the cut surface Sa ′ of the divided sheet material S ′, but the divided sheet material S ′ is disposed of. Therefore, there is no problem even if interfacial peeling occurs between the two layers S1 and S2.

  The resin sheet S is cut by applying a shearing force to the resin sheet S with the first cutting blade 20 disposed below the resin sheet S and the second cutting blade 40 disposed above the resin sheet S. Since the process progresses sequentially and progresses, the situation where the resin sheet S bonded to the surface Pa of the substrate P is peeled off from the substrate P when the cutting operation of the resin sheet S is executed is effectively prevented. .

  Further, as in the present embodiment, a complicated mechanism or the like can be obtained by using a round blade provided with an annular shape as the second cutting blade 40 and rotatably held in the inclined posture described above. The resin sheet S can be cut accurately and efficiently by continuously applying a shearing force to the resin sheet S without providing a sheet.

  The cutting apparatus 1 according to the embodiment of the present invention has been described above. However, the cutting apparatus 1 can be variously modified without departing from the gist of the present invention.

  As an example, in the embodiment described above, the amount of protrusion of the cutting edge of the first cutting blade 20 (the tip portion of the blade portion 21) with respect to the upper surface 13a of the support portion 13 is used for the cutting process. Although the same value as the thickness of P is set, the protrusion amount can be set slightly smaller than the thickness of the substrate P as long as the required cutting accuracy of the resin sheet S is ensured (illustrated). (Omitted). However, it is desirable to set the protrusion amount so as not to exceed the thickness of the substrate P. When the protruding amount exceeds the thickness of the substrate P and the cutting edge of the first cutting blade 20 is positioned above the corner portion on the surface Pa side of the substrate P, the end face Pc of the substrate P is a plane of the first cutting blade 20. When contacting the portion 23, a force in a direction to peel the resin sheet S bonded to the surface Pa of the substrate P from the substrate P acts, and interface peeling occurs at the interface between the substrate P and the resin sheet S. This is because there is a possibility of doing so.

  Moreover, the cutting device 1 according to the present invention described above can be preferably used when cutting the resin sheet S manually, and also preferably used when automatically cutting the resin sheet S. be able to.

DESCRIPTION OF SYMBOLS 1 Cutting device 12 Guide rail 13 Support part 20 1st cutting blade 21 Blade part 22 Inclined blade surface 23 Flat part 31 Slide block 32 Bearing (rolling bearing)
33 Rotating body 34 Shaft portion 40 Second cutting blade 41 Blade portion 42 Inclined blade surface 43 Planar portion P Substrate Pa Surface Pb Back surface Pc End surface S Resin sheet

Claims (2)

In a state where the back surface of the substrate is supported by the support portion from the lower side, the second cutting blade disposed above is slid along the first cutting blade fixedly provided along the end surface of the substrate. By this, a shearing force is applied to a resin sheet larger than the substrate bonded to the surface of the substrate to cut the resin sheet,
The first and second cutting blades both have a single-edged blade portion,
The first cutting blade is fixed to the support portion in a vertical posture so that the end surface of the substrate fits and comes into contact with the flat surface portion opposite to the inclined blade surface of the blade portion,
The second cutting blade is inclined with respect to the first cutting blade so that the flat portion opposite to the inclined blade surface of the blade portion slides in a state facing the inclined blade surface of the first cutting blade. The cutting device is held in an inclined posture.   The cutting device according to claim 1, wherein the second cutting blade is a round blade in which the blade portion is provided in an annular shape and is rotatably held in the inclined posture.

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