TWI381922B - Cutting apparatus - Google Patents

Description

Cutting device [Priority claim]

The present application claims priority to Korean Patent Application No. 2008-85463, filed on Jan. 29, 2008 to the Korean Intellectual Property Office, and Korean Patent Application No. 2008-10074, filed on Oct. 14, 2008. The contents disclosed in these cases are added to the case for reference.

This invention relates to cutting devices, and more particularly to cutting devices for fabricating wafer assemblies by cutting ceramic laminates.

A ceramic laminate is produced by stacking a plurality of ceramic sheets each containing internal electrodes. The ceramic laminate is cut into wafer components of a predetermined size. Recently, in response to the miniaturization and multi-function of electronic components, wafer components have achieved high capacity and high performance through thinning and high lamination.

A related art cutting device cuts a ceramic laminate along a predetermined cutting path by applying a force perpendicular to the ceramic laminate.

However, if a ceramic laminate is configured to achieve high capacity and high performance, the related art cutting device requires a large force to cut the ceramic laminate than to cut other devices. This situation creates a number of limitations and can be exemplified below.

Existing screen printing methods for fabricating ceramic laminates have limitations in performing high capacity of wafer assemblies of the same size. For this reason, a technique is used to thin the internal electrodes by using a vacuum to mount the film. In this technique, a Ni thin film electrode is formed in a vacuum chamber through a mask having an electrode pattern. However, the related art cutting device does not provide sufficient force to properly cut the ceramic laminate manufactured by the above technique.

Thus, cutting a ceramic laminate using a related art cutting device may cause cutting defects to the ceramic laminate or cause breakage of the wafer assembly formed by cutting the ceramic laminate.

Moreover, since a large force is also applied to the cutting device that is cutting the ceramic laminate, the cutting edge of the cutting device is easily damaged and thus requires frequent replacement. As a result, significant economic losses are incurred, and a technique for addressing these limitations is needed.

Aspects of the invention provide a cutting device for progressively cutting a ceramic laminate from one side of a ceramic laminate along a linear path.

According to an aspect of the invention, there is provided a cutting apparatus comprising: a moving portion movable toward a target to be cut; a cutting portion mounted on the moving portion to operate together with the moving portion; and a tilting portion enabling the cutting portion and the target The contact is gradually generated between the objects such that the object is gradually cut from one edge toward the other.

The inclined portion may include a connecting portion having two ends fixed to the moving portion and the cutting portion, the connecting portion providing a force for the cutting portion to cut the target.

The cutting portion may include a blade holder having one side rotatably fixed to the moving portion and the other side separable from the moving portion, and a blade fixed to the blade holder to cut the target.

The blade may have an edge for use as a cutting edge and has a rectangular shape, and the blade holder may include: a fixing portion fixed to an edge of the cutting edge, and having one side fixed to the moving portion; and a support The part is fixed to the two sides of the blade.

The cutting portion may include a rotary hinge rotatably secured to the blade holder and the moving portion.

The cutting portion may include an elastic member to provide an elastic force to the cutting portion.

The moving portion may include a stopper on one side to limit the rotation angle of the cutting portion.

The inclined portion may include: a stage that is assembled to position the target; a stage support that supports the stage; and is disposed between the stage and the stage support and tilts the stage to gradually gradually cut the part The elastic member of the target is cut from one edge to the other.

The stage support may have a mounting groove at a side that receives one end of the elastic member.

The stage may include a vacuum portion to form a vacuum at a surface of the stage contacting the target to fix the target.

The stage may include a position fixing clip contacting one side of the target to fix the target.

The cutting device may further comprise a foaming tape disposed between the target and the stage to prevent the target from moving when being cut.

The cutting portion of the cutting device may include a blade that is mounted to the moving portion and operates with the cutting portion and has a cutting edge at one edge.

Exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a perspective view of a cutting apparatus in accordance with an exemplary embodiment of the present invention.

Referring to FIG. 1, a cutting apparatus according to an exemplary embodiment of the present invention includes a moving portion 110, a cutting portion 120, and a connecting portion 130.

The moving portion 110 is designed to be vertically movable with respect to the pedestal on which the ceramic laminate 100 is placed. In FIG. 1, the striker 112 is mounted on the moving portion 110 to move the moving portion 110 upward and downward, but other means may be designed to move the moving portion 110.

The moving unit 110 includes a stopper 114 provided on one side.

The stopper 114 protrudes from the side surface of the moving portion 110 and is closely attached to the blade holder 124 of the cutting portion 120. When the cutting portion 120 cuts the ceramic laminate 100, the stopper 114 prevents the cutting portion 120 from being pushed to a position higher than a predetermined height.

When the moving portion 110 is lowered, the stopper 114 sends the downward force of the moving portion 110 to the cutting portion 120, so that the blade 122 can cut the ceramic laminate 100.

The moving portion 110 includes a receiving groove 116 for receiving the connecting portion 130. Here, the connecting portion 130 serves to prevent the free rotating portion of the cutting portion 120 from being spaced apart from the predetermined distance from the moving portion 110.

Although the object to be cut is illustrated as the ceramic laminate 100, the present invention is not limited to this ceramic laminate 100. Various objects can be cut by the cutting device according to the present invention.

The cutting portion 120 is rotatably mounted to the moving portion 110 to cut the ceramic laminate 100, and includes a cutting edge 122, a blade holder 124, and a rotating hinge 128.

The blade 122 is mounted to the moving portion 110 through the blade holder 124 and has a bottom edge as the cutting edge 123.

The blade 122 has a rectangular shape, and all edges except the bottom edge are surrounded by the blade holder 124.

The blade holder 124 holds the blade 122 on its lower surface and has a side surface rotatably mounted to the side surface of the moving portion 110 by the rotary hinge 128. Thus, the blade 122 can also rotate about the same axis of rotation as it rotates along with the blade holder 124.

The blade holder 124 includes a fixing portion 125 and a support portion 126. The fixing portion 125 is fixed to an edge of the cutting edge 122 facing the cutting edge 123 of the cutting edge 122, and the supporting portion 126 fixes the two edges of the cutting edge 122.

The support portion 126 can be longer than the cutting edge 123 to contact the pedestal prior to the cutting edge 123. In this case, the carrier film is placed under the ceramic laminate 100, and the blade 122 cuts only the ceramic laminate 100 by manufacturing the support portion 126 longer than the height at which the cutting edge 123 carries the film.

The rotary joint 128 passes through the side surface of the fixing portion 125 and is attached to the moving portion 110. Thus, the rotary joint 128 rotates the fixed portion 125 about the rotation axis. However, the present invention is not limited to the rotary hinge, and various methods that can rotate the fixed portion 125 can be used.

The entire connecting portion 130 is received in the receiving groove 116 of the moving portion 110. The connecting portion 130 has one end connected to the moving portion 110 and the other end fixed to the cutting portion 120.

In this way, when the cutting portion 120 is placed higher than the pedestal position, the cutting portion 120 is rotated about the rotation axis by gravity. In this case, there is no connecting portion 130, and the cutting portion 120 is spaced apart from the moving portion 110 and becomes perpendicular to the moving portion 110.

However, since the connecting portion 130 is connected to the moving portion 110 and the cutting portion 120, it prevents the cutting portions 120 from being spaced apart by more than a predetermined distance.

The connecting portion 130 includes an elastic member 132 that provides an elastic force to the cutting portion 120 to enable cutting of a portion of the ceramic laminate 100.

When the inclined side of the cutting portion 120 is closer to the moving portion 110, the elastic member 132 is compressed, and thus the elastic force is applied downward to the inclined side of the cutting portion 120.

With this force, cutting is started from the edge portion of the ceramic laminate 100, and gradually continues in a straight line.

However, the connecting portion 130 is not limited to the elastic member 132. Various mechanisms capable of providing such a force can be designed to be used as the connecting portion 130.

2 through 6 are side views of a cutting device in accordance with an exemplary embodiment of the present invention for illustrating a cutting method.

Referring to FIGS. 2 to 6, when the cutting device is placed on the ceramic laminate 100, one side of the cutting portion 120 can be rotated by the gravity pivoting hub 128 acting as a rotating shaft, and the other portion of the cutting portion 120 The side rotates downward about the axis of rotation.

Then, as shown in Fig. 2, the cutting portion 120 is placed in relation to the moving portion 110, and is slightly inclined.

As shown in Fig. 3, when the moving portion 110 is moved downward by the ram 112 (see the arrow in Fig. 6), the rotating side of the blade holder 124 first contacts the pedestal, and then the edge portion of the ceramic laminate 100 (which is close to the rotating side) contacts the cutting edge 122.

As shown in Fig. 4, when the moving portion 110 is further moved downward toward the ceramic laminate 100, the blade 122 is cut from the edge portion where the ceramic laminate 100 contacts the blade 122 by the elastic force applied by the elastic member 132. When the moving portion 110 moves further downward, the cutting proceeds gradually in a straight line.

As shown in FIG. 5, when the blade 122 completely cuts the ceramic laminate 100, the stopper 114 and the blade holder 124 come into contact with each other to stop the moving portion 110.

Thereafter, as shown in Fig. 6, the moving portion 110 moves upward, the cutting operation is completed, and the blade 122 returns to its original position.

If the ceramic laminate is cut by using an existing cutting device, cutting defects may occur in the ceramic laminate, or the surface of the wafer assembly obtained by cutting the ceramic laminate may be broken. Moreover, because a relatively large impact is applied to the cutting device, the cutting edge of the cutting device may be damaged and may cause significant economic losses, for example, by frequent replacement of the cutting edge.

On the contrary, according to the cutting device of the present exemplary embodiment, the ceramic laminate 100 is gradually cut from one edge of the ceramic laminate 100 by using the cutting portion 120 that is rotationally coupled to the moving portion 110. This progressive cutting requires less force than cutting the ceramic laminate 100 with a single cutting action. Therefore, according to the present invention, the ceramic laminate 100 can be cut more easily.

As a result, cutting defects can be prevented. Since less impact is applied to the cutting edge 122 of the cutting device, it is not necessary to replace the damaged cutting edge frequently. Thus, the cutting apparatus according to the present exemplary embodiment of the present invention is considered to be economical.

Exemplary embodiments of the present invention will now be described in more detail with reference to Figures 7 through 12.

Figure 7 is a cross-sectional view for explaining a cutting device in accordance with another exemplary embodiment of the present invention.

The cutting device of Fig. 7 includes a moving portion 310, a cutting portion 320, and an inclined portion 325.

The moving portion 310 can be vertically moved in relation to the stage 330 on which the ceramic laminate 300 is placed, and the stage support portion 340. In FIG. 7, the striker 312 is mounted on the moving portion 310 to move the moving portion 310 upward and downward. The ram 312 can be replaced with another device to move the moving portion 310.

The cutting portion 320 can be moved toward the ceramic laminate 300 and used to cut the ceramic laminate 300.

The cutting portion 320 includes a blade 322 and a blade holder 324.

The blade 322 is disposed on the moving portion 310 such that its cutting edge 323 faces the ceramic laminate 300. The blade 322 cuts the ceramic laminate along the cutting path. The blade 322 may have a hexahedral shape and have a cutting edge 323 at its bottom edge.

The blade holder 324 covers each corner except the cutting edge 323 of the blade 322 and directly contacts the moving portion 310.

The blade holder 324, which receives the two side edges of the cutting edge 323 perpendicular to the cutting edge 322, is flush with the cutting edge 323 and also contacts the foam double-sided tape 360. Thus, the blade 322 is prevented from moving further downward after cutting the ceramic laminate 300, and also prevents the foamed double-sided tape 360 under the ceramic laminate 300 from being cut.

When the inclined portion 325 is inclined to the stage 330, the cutting portion 320 and the ceramic laminate 300 can be gradually brought into contact, so that the ceramic laminate 300 can be gradually cut from one edge to the other. Contact herein may refer to the portion that is cut when the blade 322 comes into contact with the ceramic laminate 300.

The inclined portion 325 includes a stage 330, a stage support 340, and an elastic member 350.

The ceramic laminate 300 is disposed on the stage 330. Thus, the cutting is started when the cutting portion 320 moves downward and the blade 322 contacts the ceramic laminate 300.

The stage 330 is placed on the stage support 340. One side of the stage 330 is fixed to the stage support 340 such that the stage 330 will be inclined above the stage support 340.

The foam double-sided tape 360 may be further disposed between the stage 330 and the ceramic laminate 300.

A foam double sided tape 360 is bonded to the bottom of the ceramic laminate 300 to secure the position of the ceramic laminate 300. Thus, if the ceramic laminate 300 is longitudinally and cross-cut, the foam double-sided tape 360 prevents the separated portions of the ceramic laminate 300 from being displaced on the surface of the stage 330.

Stage stage 330 can include a vacuum section 332. The vacuum portion 332 forms a vacuum at the surface of the stage 330 contacting the ceramic laminate 300 and the foam double-sided tape 360, thereby fixing the ceramic laminate 300 and the foam double-sided tape 360 at a position. The vacuum portion 332 may be formed inside the stage 330.

The vacuum portion 332 has a vacuum pump that sucks air at the surface of the stage 330 and discharges the air to the outside. With this configuration, the suction force of the intake air is used to fix the ceramic laminate 300 and the foam double-sided tape 360 on the surface of the stage 330.

The stage support 340 supports the stage 330 thereon. The stage 330 is mounted on one side of the stage support 340 such that the stage 330 can be rotated and tilted. The stage 330 and the stage support 340 may be coupled together by a rotary hub disposed on one side. The invention is not limited to a rotary hub, and various mounting structures can be used.

The stage support portion 340 has a mounting groove 342 into which one end of the elastic member 350 is mounted. The elastic member 350 is fixed by inserting one end of the elastic member 350 into the mounting groove 342.

The mounting groove 342 has a sufficient depth to horizontally position the stage 330 when the elastic member 350 is fully pressed into the mounting groove 342 by the cutting portion 320.

The other end of the resilient member 350 is fixed to contact the bottom surface of the stage 330 and is placed on the side of the stage 330. One end of the elastic member 350 is inserted into the mounting groove 342 of the stage support portion 340. Thus, when the side of the pusher stage 330 of the resilient member 350 is upward, the stage 330 is tilted.

A spring having a spring force can be used as the elastic member 350, but various members capable of providing an elastic force can be used. The angle at which the stage 330 is tilted can be set according to the length of the elastic member 350, and varies according to the designer's intention.

Figures 8 and 9 are cross-sectional views for explaining the cutting procedure of the exemplary embodiment of Figure 7.

Referring to Figures 8 and 9, the moving portion 310 as shown in Fig. 7 is moved downward toward the ceramic laminate 300, which is inclined by the inclined portion 325 by a predetermined angle.

When the moving portion 310 is further moved downward, one edge portion of the ceramic laminate 300 comes into contact with the blade 322 to be cut. Then, the ceramic laminate 300 is gradually cut along its cutting path toward the other edge portion.

When the cutting is performed, the elastic member 350 is compressed by the moving force of the moving portion 310, and the inclination angle of the stage 330 is reduced, so that the stage 330 is gradually leveled.

As shown in FIG. 9, when the cutting of the ceramic laminate 300 is completed, the moving portion 310 is stopped, and the compression elastic member 350 is completely inserted into the mounting groove 342 of the stage support portion 340. Thus, the stage 330 is closely attached to the stage support 340 and thus placed horizontally.

As a result, the ceramic laminate 300 is gradually cut from one edge by the cutting portion 320.

When the moving portion 310 moves up the cutting ceramic laminate 300 along the next cutting path, the stage 330 returns to the initial inclined position by compressing the elastic member 350, and the next cutting is continuously performed.

The cutting device according to the present exemplary embodiment gradually cuts the ceramic laminate 300 from one edge of the ceramic laminate 300 because the elastic member 350 supports one side of the stage 330. Therefore, the cutting can require less force than cutting the ceramic laminate 300 with a single cutting action, and thus the ceramic laminate 300 can be more easily cut.

The cutting device according to the present exemplary embodiment can prevent cutting defects of the ceramic laminate, such as cutting defects on the ceramic laminate 300 or breaking the wafer assembly obtained by cutting the ceramic laminate 300, which may be in the case of cutting the ceramic laminate. 300 hours immediately occurred.

Since less impact is applied to the cutting edge 322 of the cutting device, it is not necessary to replace the damaged cutting edge frequently. Thus, the cutting apparatus according to the present embodiment of the present invention is considered to be economical.

Figure 10 is a diagram for explaining a cutting device in accordance with still another exemplary embodiment of the present invention. Figures 11 and 12 are diagrams for explaining the cutting procedure of the cutting device of Figure 10.

Referring to FIGS. 10 to 12, the cutting device includes a moving portion 410, a cutting portion 420, and a slope portion 425.

The inclined portion 425 includes a stage 430, a stage support portion 440, and an elastic member 450.

The ceramic laminate 400 is disposed on the stage 430. The stage 430 can cause the ceramic laminate 400 to encounter the cutting edge 422 as the cutting portion 420 descends. The stage 430 is placed on the stage support 440 and is tiltably fixed to the stage support 440.

The foam double-sided tape 460 may be further disposed between the stage 430 and the ceramic laminate 400.

The foam double sided tape 460 is bonded to the bottom of the ceramic laminate 400. If the ceramic laminate 400 is cut longitudinally and crosswise, the foam double-sided tape 460 prevents the separated portions of the ceramic laminate 400 from being displaced on the surface of the stage 430.

Stage stage 430 can include position retaining clips 432.

The position fixing clip 432 protrudes from the top of the stage 430 through the foam double-sided tape 460 and contacts one side of the ceramic laminate 400.

When the stage 430 is tilted by the resilient member 450, the ceramic laminate 400 can slide down the stage 430. In this case, the position fixing clip 432 contacts the ceramic laminate 400 to prevent the ceramic laminate 400 from sliding downward.

A mounting groove 442 in which one end of the elastic member 450 is mounted is disposed in the stage support portion 440. The elastic member 450 is inserted and fixed in the mounting groove 442. When the elastic member 450 is pressed in by the cutting portion 420, the elastic member 450 is completely pressed into the mounting groove 442, so that the stage 430 is placed horizontally.

One end of the elastic member 450 is fixed to the side of the stage 430 and contacts the bottom of the stage 430. The other end of the elastic member 450 is inserted into the mounting groove 442 of the stage support portion 440.

Detailed descriptions of the moving portion 410 and the cutting portion 420 of the presently-used embodiment may be omitted since they are substantially the same as those of the embodiment of FIG.

As shown in FIG. 10, the moving portion 410 faces downward toward the ceramic laminate 400 which is inclined by a predetermined angle by the inclined portion 425.

When the moving portion 410 moves further downward, the blade 422 initially contacts and cuts the edge portion of the ceramic laminate 400, and continues to gradually cut the ceramic laminate 400 along the cutting path.

When the cutting is performed, the elastic member 450 is compressed by the moving force of the moving portion 410, and the inclination angle of the stage 430 is reduced, so that the stage 430 is gradually leveled.

As shown in FIGS. 11 and 12, when the cutting of the ceramic laminate 400 is completed, the moving portion 410 stops moving, and the compression elastic member 450 is completely inserted into the mounting groove 442 of the stage support portion 440, so that the stage 430 is horizontally The stage level support portion 440 is contacted.

As such, the cutting device according to the present exemplary embodiment supports the one side of the stage 430 by using the elastic member 450, thereby gradually cutting the ceramic laminate 400 from one edge of the ceramic laminate 400 along the cutting path. Therefore, this progressive cutting requires less force than cutting the ceramic laminate 400 with a single cutting action, and thus it is easier to cut the ceramic laminate.

Since less impact is applied to the cutting edge 422 of the cutting device, it is not necessary to replace the cutting edge 422 frequently. Thus, the cutting apparatus according to the present embodiment of the present invention is considered to be economical.

The cutting device according to the present invention gradually cuts the ceramic laminate from one side along a linear path by using a cutting portion that is rotatably connected to the moving portion. Therefore, the cutting device according to the present invention requires less force than the cutting device of the related art for cutting a ceramic laminate using a single cutting action. Thus, the cutting operation is made easy, and the cutting defects can be avoided. Economical and effective blade protection can be achieved because less impact is applied to the cutting edge of the cutting device.

The cutting device according to the invention progressively cuts the ceramic laminate from one edge towards the other. Since the force which immediately occurs when the ceramic laminate is cut is a small force acting on the porcelain laminate, the cutting device can prevent the cutting defects of the ceramic laminate from occurring.

Although the present invention has been shown and described with respect to the preferred embodiments of the present invention, it is to be understood that various modifications and changes may be made without departing from the scope of the invention as defined by the appended claims. .

100. . . Ceramic laminate

110. . . Mobile department

112. . . Bat

114. . . Stopper

116. . . Storage slot

120. . . Cutting department

122. . . Blade

123. . . Cutting edge

124. . . Blade holder

125. . . Fixed part

126. . . Support

128. . . Rotating hub

130. . . Connection

132. . . Elastic member

300. . . Ceramic laminate

310. . . Mobile department

312. . . Bat

320. . . Cutting department

322. . . Blade

323. . . Cutting edge

324. . . Blade holder

325. . . Inclined portion

330. . . Class

332. . . Vacuum department

340. . . Station level support

342. . . Mounting slot

350. . . Elastic member

360. . . Foam double-sided tape

400. . . Ceramic laminate

410. . . Mobile department

420. . . Cutting department

422. . . Blade

425. . . Inclined portion

430. . . Class

432. . . Position fixing clip

440. . . Station level support

442. . . Mounting slot

450. . . Elastic member

460. . . Foam double-sided tape

The above and other aspects, features, and other advantages of the present invention will become more apparent from the aspects of the appended claims.

1 is a perspective view of a cutting device in accordance with an exemplary embodiment of the present invention;

2 to 6 are side views of a cutting device according to an exemplary embodiment of the present invention for explaining a cutting method;

Figure 7 is a cross-sectional view for explaining a cutting device in accordance with another exemplary embodiment of the present invention;

Figures 8 and 9 are cross-sectional views for explaining the cutting procedure of the cutting device of Figure 7;

Figure 10 is a diagram for explaining a cutting device according to still another exemplary embodiment of the present invention;

Figures 11 and 12 are diagrams for explaining the cutting procedure of the cutting device of Figure 10.

110. . . Mobile department

112. . . Bat

114. . . Stopper

116. . . Storage slot

120. . . Cutting department

122. . . Blade

123. . . Cutting edge

124. . . Blade holder

125. . . Fixed part

126. . . Support

128. . . Rotating hub

130. . . Connection

132. . . Elastic member

Claims (8)

A cutting device comprising: a moving portion movable toward a target to be cut; a cutting portion mounted to the moving portion to operate together with the moving portion; and an inclined portion for gradually forming the cutting portion and the target Contacting the ground such that the target is gradually cut from one edge toward the other edge, wherein the inclined portion includes: a stage, assembled to position the target; a stage support, supporting the stage; and elasticity A member is disposed between the stage and the stage support and tilts the stage to cause the cutting portion to gradually cut the object from one edge to the other edge. The cutting device of claim 1, wherein the stage support has a mounting groove at a side portion, the mounting groove receiving one end of the elastic member. The cutting device of claim 1, wherein the stage comprises a vacuum portion, and a vacuum is formed at a surface of the stage contacting the target to fix the target. The cutting device of claim 1, wherein the stage includes a position fixing clip that contacts one side of the target to fix the target. The cutting device of claim 1, further comprising a foam double-sided tape disposed between the target and the stage to prevent the target from moving when being cut. The cutting device of claim 1, wherein the cutting portion is A blade having an edge as a cutting edge is included. A cutting device according to claim 1, wherein the cutting portion includes a blade holder that directly contacts the moving portion and a blade that is provided to the blade holder and has an edge as a cutting edge. The cutting device of claim 7, wherein the blade holder covers each corner of the blade other than the cutting edge thereof.