JP2008254163A - Raw material for partition and manufacturing method for partitioned body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a raw material for partitioning and a manufacturing method for a partitioned body which does not generate spreading defects on a partitioned surface even though the thickness of a fragile material is increased or a partitioning width is narrower in comparison with the thickness and does not form a tongue-shaped burr and does not generates cracks caused by contact with partitioned bodies. <P>SOLUTION: In the raw material 1 for partitioning made of a plate-shaped or strip-shaped fragile material, in which partitioning grooves 4 for producing a plurality of partitioned bodies are formed on a partition scheduled section 5, the partitioning grooves 4 are respectively formed at the positions opposite to the front surface and back surface of the raw material 1 for partitioning, and is also formed on the side faces of the raw material 1 for partitioning so as to connect the partitioning grooves 4 on both the front and back surfaces. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a dividing material for dividing a brittle material such as glass or ceramics by dividing grooves provided in the material to obtain a desired divided body, and a method for manufacturing the divided body.

Conventionally, as a method for dividing a plate-like or strip-like brittle material such as a ceramic substrate on which an electronic component is mounted into a desired shape, a method described in Patent Document 1 or 2 is known, for example. This is because a dividing groove is provided in advance on at least one surface of the brittle material, and a bending moment is generated in the brittle material by pressing to be bent and divided from the dividing groove to obtain a divided body having a desired shape. Yes.
JP-A-8-206999 JP 2002-18830 A

  In the division of the conventional brittle material, by the construction method described in the document “Chemical Paper of Japan Society of Mechanical Engineers, edited by C, cutting by elastic processing paper No. 90-0407”, or by a roller as shown in Patent Document 2 above, As shown in FIG. 11, a dividing groove 11 is formed on at least one surface of the dividing material 1 with a diamond wheel or a laser, and the dividing material 1 is placed on the elastic floor 3 with the dividing groove 11 facing down. The method of dividing by pressing from above. In this case, when the thickness of the dividing material 1 to be processed is thick or when the dividing width is narrower than the thickness, the dividing surface 13 is likely to be inclined during the dividing as shown in FIG. There is a risk that a tongue-like burr 14 may be formed. Further, due to the pressing of the indenter 2 that presses the dividing material 1 from above and the bending moment due to the difference in the longitudinal elastic modulus of the dividing material 1 and the elastic floor 3, the divided members adjacent to each other incline and the indenter 2 side is inclined. In some cases, the corners may come into contact with each other, or the tongue-like burrs 14 may be pushed and bent by the adjacent divided bodies to break the corners, resulting in defects.

  The present invention has been made in view of such circumstances, and a dividing material and a method for manufacturing a divided body that can prevent the occurrence of tongue-like burrs and defects without causing poor propagation of the dividing surface. The purpose is to provide.

  In order to achieve the above object, the present invention proposes the following means. That is, the present invention provides a splitting material made of a plate-like or strip-like brittle material in which splitting grooves for splitting into a plurality of split bodies are formed in the planned splitting portion, wherein the splitting grooves are the surface of the splitting material and It is formed in the position which each opposes a back surface, and is formed also in the side part of this division | segmentation raw material so that the division | segmentation groove | channel of these front and back both surfaces may be connected.

 According to the dividing material according to the present invention, the dividing grooves are respectively formed on the compression side opposite to the dividing groove on the pulling side which becomes the crack starting point of the dividing material and on both side surfaces so as to connect these dividing grooves. Therefore, the crack propagation direction at the time of division can be restricted to prevent the propagation failure of the division surface such as the inclination and curvature of the division surface and the generation of large tongue-shaped burrs that occur on the compression side.

 In the dividing material according to the present invention, the dividing groove may have a V-shaped cross section of at least one surface of the dividing groove. There is no need for chamfering without causing burrs. The V-shaped dividing groove may be formed on four sides.

 Further, the present invention is a method for producing a plurality of divided bodies by dividing a dividing material made of a plate-like or strip-like brittle material in which dividing grooves are previously formed in a portion to be divided along the dividing grooves. The split groove is formed on both sides of the split groove on both sides of the elastic groove side to be compressed and the indenter side to be compressed and the same cross section connecting the split grooves. Moreover, the said division groove | channel is good also as a cross-sectional shape of one or more surfaces including the surface which touches at least a press member being formed in V shape. The V-shaped dividing grooves may be formed on four sides.

  According to the dividing material and the manufacturing method of the divided body according to the present invention, even when the thickness of the brittle material to be processed in dividing the dividing material is increased or the dividing width is narrower than the thickness, Since the propagation failure is not caused, the tongue-like burrs are not formed, and the defect due to the contact between the adjacent divided bodies is not caused, the processing of the dividing material can be performed stably and stably.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a schematic front view showing processing of a dividing material according to an embodiment of the present invention.
This dividing material 1 has a plate-like or strip-like shape made of a brittle material such as glass or ceramics, and is divided into a plurality of divided bodies by this processing.
The elastic floor 3 has a flat plate shape on which the dividing material 1 can be placed on the upper surface, and the indenter 2 has a square bar shape capable of pressing the dividing material 1 from above to below in the direction of the arrow. Have. The members of the elastic bed 3 and the indenter 2 may be formed of an acrylic resin or the like, for example, as long as the longitudinal elastic modulus is smaller than the longitudinal elastic coefficient of the dividing material 1. As shown in the perspective view of the dividing material 1 in FIG. 2, the grooves adjacent to the dividing grooves 4 that are arranged to face each other on the respective surfaces of the cutting section of the dividing material 1 are substantially parallel to each other. It is formed as follows. The dividing groove 4 is formed by a laser, a diamond wheel or the like. In FIG. 1, the dividing material 1 is disposed so that the center of the indenter 2 is positioned substantially vertically above the groove bottom of the dividing groove 4 before processing. The elastic floor 3 and the indenter 2 are formed so that the width in the depth direction is equal to or greater than the width of the dividing material 1 in the depth direction.

Next, a method for manufacturing a divided body using the dividing material in such a configuration will be described.
The dividing material 1 is arranged so that the indenter 2 is positioned substantially vertically above the bottom of the dividing groove 4 formed on the front surface and the back surface of the dividing material 1 before processing. When the indenter 2 presses the dividing material 1 in the direction of the arrow, a bending moment is generated due to the difference in the longitudinal elastic modulus between the dividing material 1 and the elastic floor 3, and the dividing material 1 is bent. Due to this bending, the split material 1 propagates to the indenter 2 side split groove 4 while being cracked while receiving the restraints of the split grooves 4 formed on both side surfaces from the bottom of the elastic floor side split groove. It is divided in the longitudinal section direction along the portion 5. Here, since the dividing grooves 4 are formed so as to coincide with the groove bottoms before the division, the propagation of the divisions can be easily formed substantially vertically passing between the groove bottoms formed on the respective surfaces. Therefore, there is no possibility that the dividing surface is obliquely formed or a tongue-like burr is formed at the corner of the dividing surface.
The state of the dividing material 1 immediately after being divided is shown as a schematic front view in FIG.

Also, as shown in the perspective view of the dividing material 1 in FIG. 4, the dividing groove may be formed in a V-shaped dividing groove 7, and in this case, the V-shaped valley bottom is the same as described above. The effect is obtained. If the tip R of the V-shaped valley bottom is large and the effect of restraint is low, a groove 8 is provided by a diamond wheel or laser at the tip R of the valley bottom as shown in the schematic sectional view of FIG. That's fine.
By providing the V-shaped dividing groove 7 in this way, the indenter side has a shape in which the dividing end face is chamfered, and therefore, there is no loss due to the contact of the corners between the divided parts that are adjacent to each other.

As described above, according to the method for manufacturing a divided body using the dividing material 1 according to the present embodiment, when the thickness of the brittle material to be processed is increased or when the dividing width is narrower than the thickness. In addition, since it does not cause poor propagation of the dividing surface 13, does not form tongue-like burrs, and does not cause defects due to contact between adjacent divided bodies, it is possible to satisfactorily and stably process the dividing material 1. I can do it.
In addition, according to the method for manufacturing a divided body in the present embodiment, even when the dividing surface needs to be further flattened, the flatness of the dividing surface is high, so that the grinding allowance can be reduced and the product yield is improved. Is possible. Further, when the dividing groove 7 having a V-shaped cross section is formed, a chamfering process is not necessary, and productivity can be improved.

 The present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, preferably the four-sided split groove machining can exert the restraint effect most reliably, but the restraint effect can be achieved even in the processing on the elastic floor side and both side faces, and the processing on the elastic floor side and indenter side compared to the processing on the elastic floor side only. is there. In addition, this groove processing is not limited to diamond wheel and laser processing, but methods such as ultrasonic processing, microblast processing, etching processing, electric discharge processing, and electron beam processing capable of processing the tip of the split groove at an acute angle. You may process by. Also, the V-shaped dividing groove is provided only on the surface that needs to be chamfered, and a diamond wheel having a rectangular blade at the tip of the V-shaped grindstone, laser processing, ultrasonic processing, microblast processing, etching processing, electric discharge processing, electron beam You may process simultaneously by construction methods, such as processing. Furthermore, when the purpose of preventing the occurrence of tongue-shaped burrs that tend to occur on the indenter side or chamfering is sufficient, only the surface on the indenter side may be processed into a V-shaped dividing groove.

  Further, as shown in FIG. 6, a groove 8 may be further processed at the bottom of the valley of the V-shaped dividing groove 7 by a diamond wheel or a laser. Thereby, it becomes possible to restrain the crack propagation direction more reliably.

 Although not shown, the shape of the indenter 2 and the elastic floor 3 may each be a roller shape, and if the dividing material 1 is sent out by a roller in the groove forming direction of the V-shaped dividing groove 7, the material to be processed is Even a relatively long material can be continuously divided. Moreover, it is good also as a structure which interposes the belt which consists of an elastic member between each said roller and the raw material 1 for division | segmentation, respectively.

 In addition, as in the construction method described in the document “Cut-out of the Japan Society of Mechanical Engineers, C: Ceramic plate cut by elastic processing No. 90-0407”, the spherical seat shown in FIGS. 8 and 9 is used for the division. The effect of suppressing the inclination of the cut surface can be expected. Furthermore, if the dividing groove is a V-shaped groove, it can be expected that chamfering in the subsequent process is unnecessary.

 In addition, as in the construction method shown in the document “The paper of Japan Society of Mechanical Engineers, volume C, cutting method of glass plate using friction, paper No.88-0440B”, the case of dividing using friction as shown in FIG. The present invention can be used. At this time, the dividing material 1 is sandwiched between the elastic floors 3, and the elastic floor 3 is stretched by the compressive load and is divided by the tensile force caused by the friction. Therefore, a large compressive force and friction force act on the dividing material 1, If the split groove is provided only on one surface of the position, the breakage may occur from other than the expected desired split groove. By providing the divided grooves 4 not only on one surface where the divided grooves 4 are in contact with the elastic floor but also on the other surface facing each other and further on the side surfaces connecting these divided grooves 4, the compressive load can be reduced. At this time, if the dividing groove is formed in a V shape, it can be expected that chamfering in a subsequent process is unnecessary.

Hereinafter, the present invention will be specifically described by way of examples. However, the present invention is not limited to these examples.
The evaluation method in the present example is as follows.

  □ Using a 10 mm strip soda lime glass plate as a sample, this soda lime glass rod is cut into glass to form each dividing groove at approximately 10 mm intervals. The paper was divided by the method shown in the paper No. 90-0407, and the divided surface was evaluated. The above-described construction method is described above with reference to FIG. 1, but the dividing material 1 is placed on the upper surface of the elastic floor 3 and pressed by the indenter 2 from above the dividing groove. Moreover, the cut product after division | segmentation was extracted and the division | segmentation surface was measured with the contour measuring device.

[Example 1]
As shown in FIG. 1 and FIG. 2, the dividing groove 4 is formed into four surfaces using the glass cutting, that is, the elastic floor side and the indenter side surface of the dividing material 1 and both sides so as to connect them. And evaluated.
[Example 2]
Evaluation was performed in the same manner as in Example 1 except that the dividing groove 4 of Example 1 was formed only on two surfaces, the elastic floor side and the indenter side.
[Comparative example]
As a conventional example, evaluation was performed in the same manner as in Example 1 except that the dividing groove 4 of Example 1 was formed only on one surface of the elastic floor.

 As shown in Table 1, in Example 1, the dividing surface passes through substantially four dividing grooves 4 and may meander somewhat in the dividing surface, but is greatly improved as compared to the following one and two dividing grooves only. Has been. In addition, as shown in FIG. 10, the divided surfaces of the cut product after the division have a restraining effect due to the provision of the division grooves on the four surfaces, and the inclination is reduced.

In Example 2, the dividing surface meanders on the indenter side, and the dividing surface does not necessarily pass through the indenter side dividing groove.
On the other hand, in the conventional example, the inclination of the dividing surface was larger than those in Examples 1 and 2, and a tongue-like burr was generated on the indenter side.

It is a schematic front view which shows the process of the raw material for division | segmentation which concerns on one Embodiment of this invention. It is a perspective view of the raw material for a division | segmentation. It is a schematic front view which shows the state of the raw material for division immediately after a division | segmentation. It is a perspective view of the raw material for a division | segmentation. It is a schematic front view which shows the process of the raw material for division | segmentation. It is a schematic sectional drawing which shows the modification of a division groove. It is a schematic front view which shows the division | segmentation by friction. It is a schematic front view which shows the division | segmentation by a spherical seat. It is a schematic front view which shows the division | segmentation by a spherical seat. It is a figure which shows the result of having measured the shape of the division surface with the contour measuring device. It is a schematic front view which shows the process of the conventional raw material for division | segmentation. It is a schematic front view which shows the process of the conventional raw material for division | segmentation.

Explanation of symbols

1 Dividing material 2 Indenter 4 Dividing groove 5 Dividing part 7 V-shaped dividing groove

Claims (4)

In a splitting material made of a brittle material in the form of a plate or strip in which splitting grooves for splitting into a plurality of split bodies are formed in the planned splitting portion,
The dividing groove is formed at a position where the front and back surfaces of the dividing material are opposed to each other, and is also formed on the side of the dividing material so as to connect the dividing grooves on both the front and back surfaces. Material for division. The dividing material according to claim 1,
The dividing groove is characterized in that at least one of the dividing grooves has a V-shaped cross-sectional shape. A method of manufacturing a plurality of divided bodies by dividing a dividing material made of a brittle material in a plate shape or a strip shape in which a dividing groove is formed in a predetermined division portion, along the dividing groove,
The dividing grooves are formed at the opposing positions on the front and back surfaces of the dividing material, and are formed also on the side portions of the dividing material so as to connect the dividing grooves on both the front and back surfaces. A method for manufacturing a divided body, wherein the formed dividing material is divided along the dividing groove by pressing with a pressing member such as an indenter or a roller. In the manufacturing method of the division body of Claim 3,
The divided groove is formed into a V-shaped cross section having one or more surfaces including at least a surface in contact with the pressing member.

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