TW201615370A - Film cutting tool and film cutting apparatus - Google Patents

Abstract

The invention relates to a cutter for cutting a film and an apparatus using the invented cutter. The cutter has a cutting edge, a back edge, a bottom edge and a transition portion. The cutting edge and the surface of the film to be cut form a first angle which is not zero degree; the back edge and the surface of the film to be cut form a second angle. The first angle is preferably between 1 to 30 degrees; the second angle can be substantially the same as the first angle. The cutting edge and the bottom edge need to be treated to raise the hardness, and their hardness is greater than that of the film. If the cutter is used to cut a film placed on a glass substrate, the hardness of the cutting edge and the bottom edge is less than that of the glass substrate.

Description

Tool and equipment for cutting film

The invention relates to a cutter for cutting a film, in particular to a cutter for cutting a film for a substrate, and a cutter for cutting a film attached to a glass substrate; the invention also relates to a cutting film Apparatus for using the cutting tool of the present invention.

At present, films of various functions are applied to substrates of various sizes, and substrates are widely used in electronic products. For example, glass substrates are important parts of panels, and liquid crystal display devices and films with polarizing effects can be mounted thereon. Or a protective film having various characteristics, or a polymer film having a photoresist property attached to a substrate. In the manufacturing process, the produced whole or full-volume film must be cut to a desired size, or the film that has been attached to the substrate is cut according to the desired size, and then processed.

A conventional method of cutting a film is shown in FIGS. 1 to 3. Generally, the film to be cut 20 is first covered horizontally onto a backing plate 30 as shown in FIG. 1, FIG. 2A and FIG. 2B, and then the cutter 10 is cut in a sliding manner or instantaneously moved up and down. The hardness of the cutter head must be greater than the hardness of the film to be cut. The backing plate 30 can be a processing table formed of a material such as resin or plastic.

The method of cutting the film can also be as shown in FIG. 2C, sandwiching a pair of metal cutters 10' at the position to be cut and above and below, and the metal cutter 10' is vertically displaced up and down so that the film is cut off. .

Another conventional method for cutting a film is shown in FIG. 3. The substrate 40 is usually a reinforced or unreinforced glass substrate 40 on which a film is attached by electrostatic or other means. A rotary cutter cuts the film. Because of the different strength of the film and the substrate 40, the blade portion of the cutting blade must generally have a hardness greater than the hardness of the film and less than the surface of the glass so that the film can be cut without damaging the substrate.

However, in general, when the cutter cuts the film, it continues to wear due to contact with the substrate or the backing plate, resulting in passivation. How can the tool continue to be used for a long time under the condition that the cutting operation condition is kept as constant as possible and the tool continues to wear due to the cutting, reducing the cost of changing the tool and stopping the machine. This problem is under the film to be cut. The same applies to plastic or metal pads. To solve this problem, the present invention proposes the following tools and equipment.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cutter which can continue to use a cutting film which can be used for a long period of time and has reduced downtime, while maintaining the conditions of the cutting operation as constant as possible while the tool continues to wear due to cutting. The cutter for cutting a film has a blade portion, a blade body, a transition region formed between the blade portion and the blade body, and a blade bottom located at the bottom of the cutter and along the transition portion from the blade portion Forming the blade body; the shape of the blade portion is: forming an angle (θ) with respect to the surface of the film to be cut on a plane perpendicular to the surface of the film to be cut when cutting, the angle (θ) Between 9 degrees and 171 degrees; the blade bottom forms a plane parallel to the surface of the film to be cut; the hardness of the blade portion and the blade bottom and its vicinity is greater than the hardness of the film. The width d of the blade portion may be 0, or may be close to 0, for example, 0 to 15 μm, and the length of the blade bottom in the cutting direction is preferably about 20 to 1000 μm. The tool has a reinforcing layer at least at the blade portion and the blade bottom and its vicinity. The cutter is coated on at least the outermost portion of the blade portion and the blade bottom and the vicinity thereof with a coating layer which is not easily stained with dirt and/or an adhesive, for example, a layer of Teflon tape or a fluororesin coated. Fluorine-containing compounds and the like. In the case where the film to be cut is attached to the substrate, the hardness of the blade portion and the blade bottom and its vicinity is smaller than the hardness of the substrate. The tool is made of alloy steel or stainless steel.

It is an object of the present invention to further provide a tool that can improve tool life without causing severe film peeling. The tool for cutting a film has a blade portion, a blade body, a blade rear portion formed at a position relative to the blade portion, and a blade bottom located at a bottom of the cutter, which is a plane parallel to the surface of the film to be cut. And extending from the blade portion to the rear portion of the blade, and a transition region formed between the blade bottom and the blade body; the blade portion, the blade bottom and the blade rear portion form a cutting portion; the shape of the blade portion is : at the time of cutting, forming an angle (α) greater than 0 degrees with respect to the surface of the film to be cut on a plane perpendicular to the surface of the film to be cut; the shape of the back of the blade is: when cutting, The surface of the film to be cut is perpendicular to the surface, forming an angle (β) with respect to the surface of the film to be cut, the angle (β) is greater than 0 degrees, and the angle β minus the angle α is less than 90 degrees; It is approximately equal to the angle α; or, the angle α and the angle β are between 1 and 30 degrees; or alternatively, the angle α and the angle β are both less than 45 degrees. The hardness of the cutting portion is greater than the hardness of the film. In one embodiment, the width of the cutting portion is tapered toward the edge along the blade portion, preferably to a width of 0, and the surface width at the bottom of the blade is from the narrowest portion of the blade to the rear of the blade. It is increased to a width d which is preferably about 50 μm to 300 μm. The length D of the blade bottom in the cutting direction is preferably about 20 to 1000 μm. The tool has a reinforcing layer at least at the cutting portion. The cutter is coated on at least the outermost portion of the blade portion and the blade bottom and the vicinity thereof with a coating layer which is not easily stained with dirt and/or an adhesive, for example, a layer of Teflon tape or a fluororesin coated. Fluorine-containing compounds and the like. In the case where the film to be cut is attached to the substrate, the hardness of the blade portion and the blade bottom is smaller than the hardness of the glass substrate. The tool is made of alloy steel or stainless steel.

It is still another object of the present invention to provide a cutting film apparatus using a cutter which can improve the life of a tool using a cutting film, which can further reduce film peeling during processing. The cutting film device provides a processing table for covering a film to be cut flatly on the processing table, or placing a glass substrate to which a film to be cut (20) is attached to a processing table, and then cutting machining. The cutting film device may have a feeding device for covering the film to be cut flatly on the glass substrate to be cut, or attaching a film to be cut A glass substrate of one of the membranes (20) is fed into the processing station of the apparatus. The dicing film apparatus further has a dicing substrate device, and after the film is cut by the cutter, the cutting and breaking operation of the glass substrate can be performed by the dicing glass substrate device. The dicing film apparatus may further have an anti-stripping film device.

10, 10'‧‧‧Tools

12‧‧‧Tools

13‧‧‧Tools

20‧‧‧ film

30‧‧‧ pads/workbench

40‧‧‧Substrate

121‧‧‧blade

123‧‧‧Tools

124‧‧‧Transition zone

125‧‧‧ bottom

131‧‧‧blade

133‧‧‧Tools

134‧‧‧Transition zone

135‧‧ ‧ bottom

136‧‧ ‧The back of the blade

137‧‧‧ Cutting Department

d‧‧‧The width of the blade

D‧‧‧The length of the blade in the cutting direction

The angle formed by the α‧‧‧ blade relative to the surface of the film to be cut

The angle formed by the back of the ‧‧‧ blade relative to the surface of the film to be cut

θ‧‧‧An angle formed by the blade relative to the surface of the film to be cut

Figure 1 shows the manner in which a film is cut by a conventional cutter.

Figures 2A through 2B show another way of cutting a film with a conventional cutter.

Figure 2C shows the manner in which the film is cut by conventional upper and lower pinch-off tools.

Figure 3 shows another way of cutting a film with a conventional cutter.

4A is a perspective view showing a first embodiment of the present invention for cutting a film cutter.

Fig. 4B is a view showing the cutter for cutting a film according to the first embodiment of the present invention as viewed from the blade direction (y direction), and showing the state in which the cutter is worn by cutting.

Fig. 4C is a view showing a possible embodiment of the first embodiment of the present invention for cutting a film cutter from the side (x direction) when it is cut.

Fig. 5A is a perspective view showing a second embodiment of the present invention for cutting a film cutter.

Fig. 5B is a view showing the second embodiment of the present invention for cutting a film cutter as viewed from the side when cutting.

Fig. 5C shows a partial enlarged view of a portion A in Fig. 5B.

Fig. 5D is a view showing a portion A of the cutter for cutting a film in the direction of the blade portion according to the second embodiment of the present invention.

Fig. 5E is a view showing a portion A of the cutter for cutting a film according to the second embodiment of the present invention as viewed from the blade bottom direction.

Fig. 6A is a view showing a cutting portion for cutting a film cutter and a partial blade viewed from a side according to another embodiment of the present invention.

Figure 6B shows a schematic view of the embodiment of Figure 6A as viewed from the direction of the blade.

Refer to Figures 4A through 4C for a first embodiment of the present invention. 4A shows the general shape of a cutter 12; the cutter 12 for cutting a film 20 has a blade portion 121, a blade body 123, a transition region 124, and a blade bottom 125. The transition zone 124 is formed between the blade portion 121 and the blade body 123. The blade bottom 125 is located at the bottom of the tool and is formed from the blade portion 121 along the transition region 124 toward the blade body 123, and is oriented from the blade portion 121. The blade 123 is gradually widened.

Referring to FIGS. 4B and 4C, the blade portion 121 forms an angle θ with the surface of the film 20 to be cut. In detail, the blade portion 121 is a plane perpendicular to the surface of the film to be cut (20) when cut. In general, the height of the blade portion 121 is greater than the thickness of the film and forms an angle θ with respect to the surface of the film to be cut. As shown in FIG. 4C, the angle θ is between 9 degrees and 171 degrees. The width d of the blade portion may be 0 or approach 0, for example 0 to 15 μm.

The blade bottom 125 directly contacts the film 20 when the film 20 is cut, even the portion of the pad 30 or the substrate 40 under the film 20 (the substrate 40 is shown below in FIG. 4B, 4C is merely an illustration); The blade bottom 125 is a plane formed by the bottom of the cutter 12 parallel to the surface of the film 20 to be cut. The length D of the blade bottom 125 in the cutting direction is preferably about 20 to 1000 μm. When the film is cut by the cutter 12, as shown in Fig. 4B, the cutter is gradually worn upward by the blade bottom portion 125, and a new blade bottom 125 is repeatedly formed, but the blade portion 121 for cutting the film 20 is maintained substantially enough to be cut. The width d of the blade portion is substantially the same as the inclination or arc angle of the transition region 124. Therefore, although the cutter 12 is worn by the cutting, the cutter 12 can be used for a period of time while the cutting condition is substantially maintained. Long time.

In order to avoid the phenomenon that the film is to be peeled off from the substrate 40 or the backing plate 30 by the cut film, the film to be cut can be cut in the area in front of the traveling direction on both sides of the cutting tool during the cutting process. The film 20 is pressed down on the backing plate 30 or the substrate 40 by an anti-stripping device (not shown); the anti-stripping film device can be a pair of rubber rollers advancing with the cutter and blowing downward The device, the device that applies static electricity, and the like.

Among the cutters 12, at least the hardness of the blade portion 121 and the blade bottom 125 and its vicinity in contact with the film must be greater than the hardness of the film 20.

A second embodiment of the present invention is illustrated in Figures 5A, 5B, 5C, 5D, and 5E. A cutter 13 for cutting a film 20 has a blade portion 131 for cutting the film 20, a blade body 133, a blade rear portion 136, a blade bottom 135, and a blade 135 formed on the blade bottom 135 and the blade body 133. Transition zone 134 between. Fig. 5C is a partial enlarged view of the position of the cutter for cutting the film in Fig. 5B, as shown, the blade rear portion 136 is formed at a position opposite to the blade portion 131. The blade bottom 135 is located at the bottom of the cutter 13 and is a plane parallel to the surface of the film to be cut 20, which is a plane directly contacting the film 20 during cutting, and even the backing plate 30 or the substrate 40 below the film 20 to be cut. The blade 135 extends from the blade portion 131 to the blade rear portion 135.

As shown in FIGS. 5C to 5E, the transition zone 134 may have a shape in which the width of the cutting portion 131 formed by the blade portion 131, the blade bottom 135 and the blade rear portion 136 is relatively narrow, and the cutting portion is formed by the cutting portion. 137 forms a transition zone shape that gradually widens toward the blade body. Generally, the maximum width of the cutting portion 137 is not more than 3 mm; the shape of the cutting portion 137 having a narrow width is preferably tapered along the blade portion 131 toward the blade bottom 135, so that the width of the blade bottom portion is in the cutting portion 137. The smallest one. More preferably, the blade portion 131 is tapered toward the blade bottom 135 to a width of 0, and the surface width of the blade bottom 135 is gradually increased from the blade portion 131 having a width of 0 toward the blade rear portion 136 to a width d. The width d is preferably from about 50 μm to about 300 μm. In one embodiment, the width d is about 200 μm.

The blade portion 131 forms an angle α with respect to the surface of the film to be cut 20. In detail, the blade portion 131 is formed on a plane perpendicular to the surface of the film to be cut 20 when cutting, with respect to the surface The surface of the film to be cut 20 forms an angle α.

The blade rear portion 136 is configured to form an effective cutting portion 137 for the cutting film with the blade bottom 135 and the blade portion 131. The blade rear portion 136 forms an angle β with respect to the blade bottom 135, that is, with respect to the surface of the film 20 to be cut. In detail, the blade rear portion 136 is formed to be perpendicular to the surface of the film to be cut 20 at the time of cutting. On one of the planes, an angle β is formed with respect to the surface of the film to be cut 20. The angle β is greater than 0 degrees, and the angle β minus the angle α is less than 90 degrees. The length D of the blade bottom 135 in the cutting direction is preferably about 20 to 1000 μm, more preferably about 450 to 650 μm.

In another preferred embodiment, as shown in Figures 6A and 6B, the angle β of the blade rear portion 136 is substantially equal to the angle α of the blade portion 131; another preferred embodiment is that the angle α and the angle β are between 1 to 30 degrees, or the angle α and the angle β are between 1 and 15 degrees; in another preferred embodiment, the angle α and the angle β are both less than 45 degrees.

The cutting portion 137 is substantially in a region that can be used to continually or repeatedly contact the film during cutting of the film, and therefore its hardness must be greater than the hardness of the film 20.

5A to 5E and the embodiment of Figs. 6A and 6B are capable of reducing the phenomenon that the portion of the film to be cut is peeled off from the substrate 40 or the backing plate 30 by the cut portion. However, at the time of the cutting process, the film 20 is pressed down on the back of the film 20 to be cut in front of the traveling direction on both sides of the tool, and is pressed against the backing plate 30 by a film stripping device (not shown). Or on the substrate 40.

In order to make the tool have sufficient hardness to smoothly cut the film and improve the wear resistance, the tool 12 can be made by heat treatment hardening, cold work hardening, chrome plating or other wear-resistant metal materials, wear-resistant wear-resistant materials, and the like. And at least 13 of the blade portions 121, 131 and the blade bottoms 125, 135 and the vicinity thereof may have a hardened reinforcing layer in a region where the film may be in contact with the film. Moreover, since the film to be cut 20, the backing plate 30, and the like may all dissolve the viscous polymer due to the high temperature during processing, or the film to be cut 20 may be attached to the substrate 40 or the backing plate 30 with a glue material. In order to prevent the cutter from sticking to the glue during cutting, the cutter may be at least at the outermost portion of the blade and the bottom, the cutting portion 137, or any of the membranes along with the transition region 124. 20 areas of contact, covering materials that are not easily stained with dirt or adhesives, such as fluorine-containing compounds such as Teflon.

After the film to be cut is attached to the substrate 40, the film is cut. The hardness of the edge portions 121 and 131 and the edge 125, 135 must be less than the hardness of the substrate 40.

The material of the cutters 12, 13 can be made of alloy steel or stainless steel, for example: SK120 steel of JIS standard or tungsten steel material.

The aforementioned cutters 12, 13 can be mounted on a cutting film device. The cutting film device Providing a processing table 30 made of a resin or a polymer, a metal, or the like, and having a feeding device capable of feeding the film 20 to be cut into the device and covering the processing table 30 flatly, or A glass substrate to which a film to be cut (20) has been attached is fed to a processing table of the apparatus for film cutting processing. The dicing film apparatus may further have a cutting glass substrate device (not shown) which can cover the film to be cut 20 flatly on the uncut glass substrate 40, and then first cut the film 20 with the knives 12, 13. Then, the cutting and breaking operation of the glass substrate 40 is performed by the cut glass substrate device.

The dicing film apparatus described above may further have an anti-stripping film device for pressing the film 20 against the backing film 30 or the substrate above the film to be cut 20 in the region in front of the traveling direction on both sides of the tool. 40; the anti-stripping device can be a pair of rubber rollers that advance with the cutter, a device for blowing downward, a device for applying static electricity, a conventional pressure plate, and the like.

The above description does not necessarily constitute a limitation on the scope of the patent application. Modifications or improvements made in accordance with the inventive concept are still within the scope of the present invention.

13‧‧‧Tools

131‧‧‧blade

133‧‧‧Tools

134‧‧‧Transition zone

135‧‧ ‧ bottom

Claims (28)

A cutter (12) for cutting a film, the cutter having a blade portion (121), a blade body (123), a transition region (124) formed between the blade portion and the blade body, and a blade bottom (125) Located at the bottom of the tool and formed from the blade portion (121) along the transition region (124) toward the blade body (123); the blade portion (121) is shaped to be in the film to be cut when cutting (20) a plane perpendicular to the surface forms an angle (θ) with respect to the surface of the film to be cut (20), the angle (θ) being between 9 degrees and 171 degrees; the edge (125) is formed a plane parallel to the surface of the film to be cut (20); the hardness of the blade portion and the blade bottom and its vicinity is greater than the hardness of the film. The tool according to claim 1, wherein the width (d) of the blade portion is 0 to 15 μm, and the transition region (124) gradually widens from the blade portion toward the blade body. The tool of claim 2, wherein the blade bottom (125) has a length (D) in the cutting direction of about 20 to 1000 μm. The tool of claim 1, wherein the tool has a reinforcing layer at least at the blade portion and the blade bottom and its vicinity. The tool according to claim 4, wherein the reinforcing layer is any one of the following: (1) a heat-treated hardened layer, (2) a cold-work hardened layer, (3) a wear-resistant plating layer, and (4) one Wear-resistant coating. The tool according to claim 4 or claim 5, wherein the cutter is coated with a fluorine-containing compound which is less likely to adhere to dirt or an adhesive at least at the outermost portion of the blade portion and the blade bottom and the vicinity thereof. The tool according to claim 1, wherein the hardness of the blade portion and the blade bottom and the vicinity thereof is smaller than the hardness of the glass substrate (40) when the film to be cut is attached to the glass substrate (40). A tool according to any one of claims 1 to 5, which is made of alloy steel or stainless steel. The tool of claim 8, the material of the tool is SK120. A cutter (13) for cutting a film, the cutter having a blade portion (131) for cutting a film, a blade body (133), and a blade rear portion (136) formed at a position relative to the blade portion (131), The blade bottom (135) is located at the bottom of the cutter, is a plane parallel to the surface of the film to be cut (20), and extends from the blade portion (131) to the blade rear portion (135), and a transition region (134). Between the blade bottom and the blade body; the blade portion, the blade bottom and the blade rear portion form a cutting portion (137); the cutting portion (137) has a width along the blade portion (131) Shrinking toward the blade bottom (135); the blade portion (131) is shaped to form a surface relative to the surface of the film to be cut on a plane perpendicular to the surface of the film to be cut (20) when cutting Angle (α), the angle (α) is greater than 0 degrees; the shape of the blade rear portion (136) is: in the plane perpendicular to the surface of the film to be cut (20), relative to the film to be cut The surface forms an angle (β) which is greater than 0 degrees and the angle β minus the angle α is less than 90 degrees; the hardness of the cut portion (137) is greater than the hardness of the film. The tool of claim 10, wherein the angle (α) of the blade portion (131) is between 1 and 30 degrees The tool of claim 10, wherein the angle (α) of the blade portion (131) is between 1 and 15 degrees. The tool of claim 10, wherein the angle (β) of the blade rear portion (136) is substantially equal to the angle (α) of the blade portion (131). The tool of claim 10, wherein the angle (β) of the blade rear portion (136) and the angle (α) of the blade portion (131) are both less than 45 degrees. The tool of claim 10, wherein the width of the cutting portion (137) is along the edge The portion (131) is tapered to the blade bottom (135) to 0, and the surface width of the blade bottom (135) is gradually increased from the blade portion (131) having a width of 0 toward the blade rear portion (136) to a width d. The width d of the blade portion is about 10 μm to 300 μm; the transition zone has a shape in which the width of the cutting portion (137) is narrow, and the cutting portion (137) gradually widens toward the blade body. The tool of claim 15 wherein the width d of the blade portion is about 200 μm. The tool of claim 15 or 16, wherein the blade bottom (135) has a length (D) in the cutting direction of about 20 to 1000 μm. The tool of claim 15 or 16, wherein the blade bottom (135) has a length (D) in the cutting direction of about 450 to 650 μm. The tool of claim 10, the tool having a reinforcement layer at least at the cutting portion (137). The tool according to claim 10, wherein the reinforcing layer is any one of the following: (1) a heat-treated hardened layer, (2) a cold-work hardened layer, (3) a wear-resistant plating layer, and (4) one Wear-resistant coating. The tool according to claim 19 or claim 20, wherein the cutter is coated with a fluorine-containing compound which is less likely to adhere to dirt or an adhesive at least at the outermost portion of the blade portion and the blade bottom and the vicinity thereof. The cutter according to claim 10, wherein the hardness of the cutting portion (137) is smaller than the hardness of the glass substrate (40) when the film to be cut is attached to the glass substrate (40). A tool according to any one of claims 10 to 16, which is made of alloy steel or stainless steel. The tool of claim 23, the material of the tool is SK120. A cutting film apparatus using a tool as set forth in any of the preceding claims. The cutting film apparatus of claim 25, which provides a processing station and has a feeding device for feeding a film to be cut (20) into the apparatus and covering the processing table flatly, or Attaching a glass substrate to be etched (20) to the device The position of the processing table is followed by film cutting. The dicing film device of claim 25, further comprising a cutting glass substrate device, wherein the feeding device is configured to cover the film to be cut (20) flatly on the glass substrate to be cut, and then cut the tool with the cutter After the film, the cutting and breaking operation of the glass substrate is performed by the cut glass substrate device. A dicing film device as claimed in claim 25, which has an anti-stripping device.