MLCC sheet edge cutting device

Abstract

To provide an MLCC sheet edge cutting device that can accurately and quickly remove unused edges during the conventional MLCC manufacturing process.SOLUTION: The present invention relates to an MLCC sheet edge cutting device including a seating unit configured to seat a base material having a fixing sheet and an MLCC attached to one surface of the fixing sheet, a fixing unit configured to apply pressure to the top of at least one MLCC, and a punch unit configured to apply pressure to at least a portion of the edge not applied pressure by the fixing unit to bend it, and then cut the base material along the cutting surface. The MLCC sheet edge cutting device according to the present invention can quickly and accurately remove the edge while preventing adhesion between MLCCs facing each other on the cutting surface, thereby improving productivity.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an edge cutting device for an MLCC sheet, and more particularly to a cutting device that can accurately cut off unused edge portions after cutting MLCCs manufactured from a base material. [Background technology]

[0002] MLCC (Multi-Layer Ceramic Capacitor) is an electronic component that is used in almost all electronic devices, so much so that it is called the rice of the digital industry. MLCCs are manufactured from multiple ceramic and metal layers. After the manufactured block is cut to the desired size, a separation process is required for each individual piece.

[0003] After cutting, the MLCCs may remain attached to the upper surface of the fixing sheet. At this time, various arrangements may be made depending on the cutting surface. For example, the cut MLCCs may be arranged in an N x M array. In this regard, Patent Document 1 discloses a technique applied to a process of separating the MLCCs after cutting.

[0004] However, in the past, when conventional techniques were applied to cutting the edges of MLCCs after cutting, there were problems such as the difficulty of accurately cutting the excess due to the high temperature and adhesive properties of the MLCCs, which took time and reduced productivity. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Korean Patent No. 2400169 Summary of the Invention [Problem to be solved by the invention]

[0006] An object of the present invention is to provide an edge cutting device for an MLCC sheet that can accurately and quickly remove unused edge portions during the conventional MLCC manufacturing process. [Means for solving the problem]

[0007] As a means for solving the above problem, an edge cutting device for an MLCC sheet can be provided, which includes a seating section configured to seat a fixing sheet and a base material with MLCCs attached to one surface of the fixing sheet, a fixing section configured to apply pressure to the top of at least one MLCC, and a punch section configured to cut the base material along the cutting surface after applying pressure to at least a portion of the edge portion that is not pressurized using the fixing section and bending it.

[0008] Meanwhile, the fixing portion may be configured to apply pressure to the at least one MLCC row.

[0009] Meanwhile, the punch portion can include an extra pressure portion configured to be able to press the edge of the base material, and an edge portion configured to be able to cut the base material along the cutting surface.

[0010] Alternatively, the edge portion and the extra pressure portion may be integrally provided.

[0011] Meanwhile, the lower end of the excess pressure portion may be provided extending downward from the lower end of the edge portion.

[0012] Furthermore, the extra pressure portion may be configured to be able to apply pressure to the upper surface of the fixed sheet.

[0013] Meanwhile, the height difference between the lower end of the excess pressure portion and the lower end of the edge portion may be configured to be greater than the height of the MLCC.

[0014] Also, the width of the edge portion may be configured to be larger than the width of the MLCC.

[0015] Meanwhile, the side of the extra pressure portion facing the cut surface may be spaced apart from the cut surface by a distance greater than the width of the MLCC.

[0016] In addition, the end of the excess pressure portion may further include a protrusion formed to extend a predetermined length in the direction of the cut surface.

[0017] Furthermore, the extra pressure portion can be configured to be able to apply pressure to the top surface of the MLCC provided on the edge.

[0018] On the other hand, the width of the edge portion can be configured to be smaller than the width of the MLCC.

[0019] In this case, the width of the edge portion may be configured to be greater than half the width of the MLCC.

[0020] Meanwhile, the extra pressure portion may be configured to bend the edge of the base material by 45 to 180 degrees around the point where the edge intersects with the cutting surface.

[0021] Meanwhile, the punching machine may further include an edge collecting unit that is provided below the punch unit and configured to collect the cut edges. [Effects of the Invention]

[0022] The device for cutting the edges of an MLCC sheet according to the present invention can quickly and accurately remove the edges while preventing adhesion between the MLCCs on opposite sides of the cutting surface, thereby improving productivity. [Brief explanation of the drawings]

[0023] [Figure 1] 1 is a diagram illustrating an example of an MLCC sheet according to the present disclosure. [Figure 2] FIG. 2 is a cross-sectional view of an edge cutting device for an MLCC sheet according to the first embodiment of the present disclosure. [Figure 3] FIG. 1 is an exploded perspective view of a first embodiment of the present disclosure. [Figure 4] FIG. 2 is an enlarged cross-sectional view of a punch portion in the first embodiment of the present disclosure. [Figure 5A] FIG. 2 is an operational state diagram of the first embodiment of the present disclosure. [Figure 5B]FIG. 2 is an operational state diagram of the first embodiment of the present disclosure. [Figure 5C] FIG. 2 is an operational state diagram of the first embodiment of the present disclosure. [Figure 5D] FIG. 2 is an operational state diagram of the first embodiment of the present disclosure. [Figure 5E] FIG. 2 is an operational state diagram of the first embodiment of the present disclosure. [Figure 6] FIG. 10 is a cross-sectional view of an edge cutting device for an MLCC sheet according to a second embodiment of the present disclosure. [Figure 7A] FIG. 10 is an operational state diagram of the second embodiment of the present disclosure. [Figure 7B] FIG. 10 is an operational state diagram of the second embodiment of the present disclosure. [Figure 7C] FIG. 10 is an operational state diagram of the second embodiment of the present disclosure. [Figure 7D] FIG. 10 is an operational state diagram of the second embodiment of the present disclosure. [Figure 7E] FIG. 10 is an operational state diagram of the second embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0024] An edge cutting device for an MLCC sheet according to an embodiment of the present invention will now be described in detail with reference to the accompanying drawings. In the following description of the embodiment, the names of the components may be referred to by other names in the art. However, if there is functional similarity or identity between the components, modified embodiments may be considered equivalent configurations. Furthermore, reference numerals are used for convenience of description. However, the illustrations in the drawings in which these reference numerals are used do not limit the scope of the components within the drawings. Similarly, even if an embodiment is adopted in which the configuration in the drawings is partially modified, functional similarity or identity between the components may be considered equivalent configurations. Furthermore, if a component is recognized as something that should be included in the description of the embodiment by a person of ordinary skill in the art, the description of that component will be omitted.

[0025] FIG. 1 is a diagram showing an example of an MLCC sheet according to the present disclosure.

[0026] Referring to FIG. 1, the MLCC sheet 1000 to be cut in this disclosure may include a fixing sheet 1100 and MLCCs 1200 arranged on the upper surface of the fixing sheet 1100. In this specification, this state is referred to as a "base material." MLCCs are manufactured as a single block during the manufacturing process and then cut into pieces of the same size in a cutting process. The MLCC block is manufactured using a process that involves heating and pressurizing. During this process, the separated MLCCs 1201 arranged on the edge fixing sheet 1101 may not be manufactured under uniform conditions. Therefore, removing them regardless of whether they are non-defective can help improve productivity. Hereinafter, the edge MLCCs 1201 and the edge fixing sheet 1101, which are removed together, are referred to as the edge portion 1001.

[0027] The MLCC sheet edge cutting device 1 according to the present disclosure is configured to be able to remove the edge fixing sheet 1101 together with the outermost MLCC 1201, so as to be easily applicable to MLCC manufacturing and post-cutting processes.

[0028] Hereinafter, the edge cutting device 1 for an MLCC sheet according to the first embodiment of the present disclosure will be described with reference to FIGS. 2 to 5E.

[0029] FIG. 2 is a cross-sectional view of the MLCC sheet edge cutting device 1 according to the first embodiment of the present disclosure, and FIG. 3 is an exploded perspective view of the first embodiment of the present disclosure.

[0030] Referring to Figures 2 and 3, the MLCC sheet edge cutting device 1 according to the first embodiment of the present disclosure may include a seating unit 100, a lower frame 200, a fixing unit 300, an upper frame 400, a punching unit 500, an edge removal unit 600, a fixing unit driving unit (not shown), and an upper frame driving unit (not shown).

[0031] The seating unit 100 is configured to seat a preform having MLCCs cut to a predetermined size. The seating unit 100 may be provided with a position adjusting unit to adjust the preform to an accurate cutting position. The position adjusting unit is configured to adjust the tilt angle compensation and horizontal position of the MLCC preform 1000. However, since various configurations for position alignment can be applied to this configuration, detailed description will be omitted.

[0032] The lower frame 200 is configured to act on a punch unit 500 (described later) to cut the MLCC sheet. An edge of the MLCC sheet can enter the upper side of the lower frame 200.

[0033] The fixing part 300 is configured to be able to apply pressure to and temporarily fix a portion of the base material seated on the seating part 100. The fixing part 300 may be configured to be movable in the up and down direction relative to the lower frame 200. As an example, the fixing part 300 may be slidably coupled to the lower frame 200 by a plurality of shafts 210.

[0034] The fixing part 300 is configured to apply downward pressure to at least one row of MLCCs excluding the outermost MLCCs.

[0035] A slot 310 configured to allow the punch unit 500 to pass through may be formed on one side of the fixing unit 300. One side of the slot 310 may be a cutting surface through which the punch unit 500 (described later) cuts the base material 1000 as it descends.

[0036] The upper frame 400 may be coupled to the lower frame so as to be slidable in the vertical direction. A punch unit 500 may be provided below the upper frame 400. By adjusting the position of the upper frame 400 in the vertical direction, the position of the punch unit 500 may be adjusted accordingly.

[0037] The punch unit 500 is configured to bend at least a portion of the base material 1000 by pressing the edge while the fixing unit 300 fixes the base material 1000, and then cut the base material 1000. The punch unit 500 may be configured to be movable vertically independently of the fixing unit 300. Because the MLCCs are attached to the upper surface of the fixing sheet 1100 at the edge of the base material, cutting in the vertical direction may cause various problems, such as the MLCCs being attached to the cutting portion, deformation of the fixing sheet 1100, and damage to the fixed MLCCs. Therefore, in the present disclosure, the punch unit 500 may be configured to bend at least a portion of the fixing sheet at the edge, thereby creating a gap between the outermost MLCCs and the fixed MLCCs, and then cut the gap, thereby enabling accurate cutting.

[0038] The edge collection unit 600 is configured to collect the cut and fallen edges. The edge collection unit 600 can be applied with various widely used collection means.

[0039] The fixed part driving unit (not shown) may be configured to reciprocate the fixed part 300 a predetermined distance in the vertical direction relative to the lower frame 200. Also, an upper frame driving unit (not shown) may be provided to drive the upper frame 400 in the vertical direction. The fixed part driving unit and the upper frame driving unit may be selected from any one of various conventional driving elements.

[0040] However, although not shown, the MLCC sheet edge cutting device 1 according to the present disclosure can be modified and implemented in a state in which the edge collecting unit 600 is omitted.

[0041] FIG. 4 is an enlarged cross-sectional view of the punch unit 500 according to the first embodiment of the present disclosure.

[0042] Referring to FIG. 4, in the first embodiment of the present disclosure, a punch portion 500 may be configured to include an edge portion 510 and an extra pressure portion 520.

[0043] In the first embodiment, the extra pressure applying portion 520 is configured to be able to apply pressure to and bend a portion of the edge of the base material prior to the cutting operation of the edge portion 510. As an example, the extra pressure applying portion 520 is configured to be able to apply pressure to and bend the fixing sheet 1100 of the base material.

[0044] The edge portion 510 may be provided with a predetermined width between the cutting surface and the excess pressure portion 520. The width of the edge portion 510 may be configured to be larger than the width of the MLCC when cutting. Therefore, when removing the outermost MLCC, the width of the edge portion 510 is configured to be larger than the width of the MLCC. Therefore, the MLCC 1201 cut from the outermost portion may come into contact with the excess pressure portion 520 before the edge portion 510. That is, since the width of the edge portion 510 is determined to be a predetermined length, the excess pressure portion 520 first presses the edge MLCC 1201 to bend the MLCC fixing sheet 1100, and then the edge portion 510 cuts the cutting surface, allowing for a clean cut.

[0045] The excess pressure portion 520 may be formed to extend a predetermined distance downward from the edge portion 510. The height difference between the lower end of the excess pressure portion 520 and the lower end of the edge portion may be configured to be greater than the height of the MLCC. Therefore, the pressure portion can prevent the edge portion 510 from interfering with the MLCC 1201 when the edge MLCC 1201 separates from the cut surface.

[0046] A protrusion 521 that protrudes a predetermined length in the direction of the cutting surface may be provided at the end of the extra pressure unit 520. A predetermined space is formed between the protrusion 521 and the lower part of the edge unit 510. As the punch unit 500 descends, the MLCC fixing sheet is pressed through the inner protrusion of the extra pressure unit 520. At this time, the predetermined space is configured so that the angle of the MLCC 1201 attached to the edge can be easily changed as the edge fixing sheet 1101 bends.

[0047] Meanwhile, a predetermined gap may be provided between the protrusion 521 and the cut surface. The predetermined gap may be determined to be larger than the width of the outermost MLCC. Therefore, even when the punch unit 500 descends, the protrusion does not come into contact with the top of the edge MLCC, and can press the fixing sheet first.

[0048] However, in the above-described embodiment, an example was shown in which the edge portion and the excess pressure portion were configured as an integrated unit, but the edge portion and the excess pressure portion can be separated and modified to be configured so that they can be driven independently.

[0049] Hereinafter, the MLCC sheet edge cutting device 1 according to the first embodiment of the present disclosure will be described in detail with reference to FIGS. 5A to 5E.

[0050] 5A, 5B, 5C, 5D and 5E are operation state diagrams of the first embodiment of the present disclosure.

[0051] 5A, first, a preform 1000 from which MLCCs have been cut is placed on the seat 100. Then, the cut surface of the MLCC is aligned with the cutting surface of the punch 500 to match the edge to be removed. At this time, the position of the seat 100 is adjusted in the x, y, and angle directions for precise alignment.

[0052] 5B, the fixing part 300 descends and presses the upper surfaces of the MLCCs against the lower part of the fixing part 300. At this time, at least one row of MLCCs to be used is pressed, and the MLCC 1201 at the end is not pressed.

[0053] 5C, the punch unit 500 descends to start cutting the edge of the MLCC sheet. As the punch unit 500 descends, the extra pressure unit 520 presses the fixing sheet 1100 first, causing the edge to bend.

[0054] Referring to FIG. 5D, punch portion 500 is further lowered, and the fixed sheet is further bent, clearing a space for edge portion 510 to descend along the cutting surface.

[0055] Referring to FIG. 5E, the edge portion 510 descends to a position lower than the seating surface of the seating portion 100, and the fixed sheet 1100 is cut.

[0056] As can be seen carefully with reference to Figures 5A to 5E, the MLCC sheet edge cutting device 1 according to the first embodiment of the present disclosure pressurizes and bends the fixed sheet before removing the edge, and then cuts along the cutting surface.

[0057] The outermost MLCC row also has a wider gap between adjacent MLCCs as the fixing sheet 1100 is bent. The edge can be bent at 45 to 180 degrees around the intersection of the cutting surface and the fixing sheet until the MLCC fixing sheet is cut. As the edge is bent, the space between the MLCCs on the edge and the cutting surface widens. The edge portion 510 can be inserted along this gap, making cutting easier and preventing damage to other MLCCs during the cutting process.

[0058] Hereinafter, an LCC sheet edge cutting device 1 according to a second embodiment of the present disclosure will be described with reference to FIGS. 6 to 7E.

[0059] FIG. 6 is a cross-sectional view of an MLCC sheet edge cutting device 1 according to the second embodiment of the present disclosure.

[0060] 6, the MLCC sheet edge cutting device 1 according to the second embodiment of the present disclosure may be configured such that the structure of the punch unit 500 is different from that of the first embodiment. Specifically, the width of the edge unit 510 may be configured to be smaller than the width of the MLCC chip.

[0061] Therefore, when the punch unit 500 is lowered downward with the MLCC sheet fixed for cutting, the end of the extra pressure unit 520 can press the upper end of the edge of the MLCC chip.

[0062] The width of the edge portion 510 may be determined to be larger than half the width of the edge MLCC chip 1201. This means that the distance between the cutting surface and the side of the excess pressure portion 520 is configured to be smaller than the width of the MLCC chip 1201.

[0063] Therefore, the extra pressure member 520 presses and applies pressure to the inner and outer halves of the upper end of the MLCC chip. The extra pressure member 520 applies pressure to a portion of the outer half of the MLCC chip, which may make it easier for the edge fixing sheet 1101 to bend.

[0064] Meanwhile, the second embodiment of the present disclosure may also include elements such as the seating portion 100, the lower frame 200, the fixing portion 300, and the upper frame 400, similar to the first embodiment described above.

[0065] 7A, 7B, 7C, 7D and 7E are operational state diagrams of the second embodiment of the present disclosure.

[0066] Referring to FIG. 7A, one end of the MLCC preform 1000 may be aligned horizontally while being inserted under the punch unit 500 .

[0067] Referring to FIG. 7B, the fixing part 300 is lowered to apply pressure to at least one row of MLCCs to be used and fix them.

[0068] Referring to FIG. 7C, when the punch unit 500 is lowered while the fixing unit 300 is pressing the MLCC 1200, the excess pressing unit 520 first comes into contact with the upper end of the edge of the MLCC 1201.

[0069] 7D, as the punch unit 500 is lowered, the extra pressure unit 520 first presses the top end of the edge MLCC 1201 chip, bending the fixing sheet 1100 and widening the gap between the MLCC being used and the edge MLCC 1201. In other words, the edge MLCC 1201 angle changes outward from the fixing sheet. At this time, slippage may occur between the top surface of the edge MLCC 1201 and the edge of the extra pressure unit 520.

[0070] 7E, as the punch unit 500 is further lowered, the edge unit 510 penetrates between the spread MLCCs and cuts the fixing sheet 1100. The cut MLCC edges 1001 may be dropped onto the stacking unit.

[0071] As described above, the MLCC sheet edge cutting device 1 according to the present disclosure can precisely cut the edges of manufactured MLCCs, and is therefore effective in preventing damage to usable MLCCs during cutting. [Explanation of symbols]

[0072] 1 MLCC sheet edge cutting device 100 seating area 200 Lower Frame 210 Shaft 300 Fixed part 310 slot 400 upper frame 500 punch section 510 Edge 520 Extra pressure section 1000 MLCC base material 1001 Edge 1100 fixed seat 1101 Edge fixing sheet 1200 MLCC 1201 Edge MLCC

Claims

1. a seating portion configured to seat a base material having a fixing sheet and an MLCC attached to one surface of the fixing sheet; a fixing portion configured to be able to apply pressure to an upper portion of the at least one MLCC; a punch unit configured to pressurize and bend at least a portion of the edge that is not pressed by the fixing unit, and then cut the base material along a cutting surface; An edge cutting device for MLCC sheets, comprising:

2. The edge cutting device for MLCC sheets according to claim 1 , wherein the fixing portion is configured to be able to apply pressure to at least one row of MLCCs.

3. The punch unit is an extra pressure portion configured to be able to pressurize the edge of the base material; an edge portion configured to be able to cut the base material along the cutting surface; The edge cutting device for MLCC sheets according to claim 2, comprising:

4. The edge cutting device for an MLCC sheet according to claim 3, wherein the edge portion and the extra pressure portion are integrally provided.

5. The edge cutting device for an MLCC sheet according to claim 4 , wherein a lower end of the excess pressure portion extends downward from a lower end of the edge portion.

6. The edge cutting device for an MLCC sheet according to claim 5 , wherein the extra pressure section is configured to be able to apply pressure to the upper surface of the fixed sheet.

7. The edge cutting device for an MLCC sheet according to claim 6 , wherein a height difference between a lower end of the excess pressure portion and a lower end of the edge portion is configured to be larger than a height of the MLCC.

8. The edge cutting device for an MLCC sheet according to claim 7 , wherein the width of the edge portion is configured to be larger than the width of the MLCC.

9. The edge cutting device for an MLCC sheet according to claim 8, wherein a side surface of the extra pressure portion facing the cutting surface is spaced apart from the cutting surface by a distance greater than the width of the MLCC.

10. The edge cutting device for an MLCC sheet according to claim 7, wherein an end of the excess pressure portion further includes a protrusion formed to extend a predetermined length in the direction of the cutting surface.

11. The edge cutting device for an MLCC sheet according to claim 5 , wherein the extra pressure section is configured to be able to apply pressure to an upper surface of the MLCC provided at the edge.

12. The edge cutting device for an MLCC sheet according to claim 11, wherein the width of the edge portion is configured to be smaller than the width of the MLCC.

13. The edge cutting device for an MLCC sheet according to claim 12, wherein the width of the edge portion is configured to be greater than half the width of the MLCC.

14. The edge cutting device for an MLCC sheet according to claim 5, wherein the extra pressure section is configured to bend the edge of the base material by 45 degrees to 180 degrees around a point where the edge intersects with the cutting surface.

15. The edge cutting device for an MLCC sheet according to claim 1 , further comprising an edge collecting unit provided below the punch unit and configured to collect the cut edge.

Images