Background technique
In the electronic equipment using mobile phone or personal computer as representative, the device core with devices such as electronic circuitsPiece becomes necessary constituent element.It is partly led for device chip, such as using a plurality of segmentation preset lines (spacing track) to by silicon etc.Body material formed chip front carry out divide and each region formed device after, along the segmentation preset lines to chip intoRow segmentation, to obtain device chip.
Rotation is installed on when dividing the wafer into multiple device chips, such as using by cricoid cutter (cutting tool)Cutting apparatus made of axis (main shaft).After rotating cutter at high speeds, cut deeper along the segmentation preset lines of machined objectEnter, is divided into multiple device chips so as to cut off the machined object.
As a mode of cutter, there is known the grommet-type cutter only formed by cutting blade, which utilizes bond materialIt is fixed with abrasive grain.In the cutter of the grommet-type, majority is with a thickness of 100 μm of relatively thin cutters below.Therefore, in conveying etc.When, cutter is accommodated in cutter container and prevents its damaged (for example, referring to patent document 1).
Patent document 1: Japanese Unexamined Patent Publication 2006-82817 bulletin
In addition, above-mentioned cutter container has (recessed for storing the accepting regions of cutter for example comprising incorporating sectionPortion)；And cover, it is used to for being closed accepting regions, in the state that cutter is accommodated in accepting regions, will be received by coverReceive region closure.In addition, cover is fixed on incorporating section by band equal in the cutter container.
When taking out cutter from cutter container, usually cover side is beaten in the state of being located below incorporating sectionIt opens.Cutter is incorporated in the accepting regions of incorporating section, therefore even if tilting cutter container in the state of opening cover side,Cutter will not fall off and damaged from cutter container.
But sometimes mistakenly incorporating section side is opened in the state of being located below cover.In this case,Cutter can not be kept by the accepting regions of incorporating section, therefore for example when tilting cutter container, cutter is possible toIt falls off from cutter container and damaged.
Summary of the invention
The present invention is completed in view of the problem, and its purpose is to provide cutter containers, even being located at coverIn the case where opening incorporating section side in the state of lower section, cutter can also be kept by cover.
According to one method of the present invention, cutter container is provided, the cutter of grommet-type is stored, wherein the knifeTool container includes incorporating section, with bottom plate；Cover, with top plate；And hinge part, by the incorporating section and the coverBeing connected to can be opened and closed, and be provided with circular recess portion on which floor plate, and the diameter of the recess portion is greater than the periphery of the cutter, can be rightThe cutter is stored, and is provided with protrusion on the top plate, in the state that the cover is closed relative to the incorporating section, the protrusionThan recess portion position in the outer part and the contacts baseplate.
In one embodiment of the present invention, preferably in the more convex than this of the bottom for the recess portion for being set to the bottom plate or the top plateThe region of portion in the inner part, which is provided with, keeps out of the way hole, this keep out of the way hole for inhibit when the cover relative to the incorporating section opening when or the receiptsIt receives when portion is opened relative to the cover and acts on the electrostatic force between the cutter and the bottom plate or between the cutter and the top plate.
In the cutter container of one embodiment of the present invention, it is provided with circular recess portion on the bottom plate for constituting incorporating section, it shouldThe diameter of recess portion is greater than the periphery of cutter, can store to cutter, and is provided with protrusion on the top plate for constituting cover,In the state that cover is closed relative to incorporating section, the protrusion is than recess portion position in the outer part and contacts baseplate.Therefore, even ifIt is that in the case where opening incorporating section side in the state of being located below cover, can also be protected by protrusion to cutterIt holds.
Specific embodiment
Referring to attached drawing, the embodiment of one embodiment of the present invention is illustrated.Fig. 1 is to schematically show this embodiment partyThe perspective view of the structural example of the cutter container 2 of formula.Cutter container 2 is configured to the so-called grommet-type only formed by cutting bladeCutter (washer cutter) 11 is stored, and cutter container 2 includes incorporating section 4 and cover 6.
The cutter 11 being accommodated in the cutter container 2 is such as being fixed with diamond etc. using bond material metal or resinAbrasive grain and be formed as center have opening portion 11a ring-type.The thickness of cutter 11 is typically 0.1mm~0.3mm or so, knifeThe outer diameter (diameter of periphery) of tool 11 is typically 54mm~58mm or so.But for the material of cutter 11, size (diameter,Thickness), preparation method etc. is not particularly limited.
Incorporating section 4 and cover 6 are interconnected by hinge part 8.For the material of incorporating section 4, cover 6 and hinge part 8Etc. being not particularly limited, in the present embodiment, incorporating section 4, cover 6 and hinge part is integrally formed using resins such as polypropylene8.Incorporating section 4 has bottom plate 10, and it is generally circular recess portion 12 that the face side 10a of bottom plate 10, which is provided with vertical view,.The recess portion12 become the accepting regions stored to cutter 11.Therefore, the diameter of recess portion 12 is greater than the outer diameter of cutter 11.
It is provided in the center of recess portion 12 from the bottom surface of recess portion 12 columned protrusion 14 outstanding.The periphery of protrusion 14The diameter of 14a is less than the internal diameter (diameter of opening portion 11a) of cutter 11.In addition, according to around protrusion on the bottom surface of recess portion 1214 mode is formed with multiple holes (keeping out of the way hole) 16.
The providing holes 16 on the bottom surface of recess portion 12 in this way, so as to abated effect between bottom plate 10 and cutter 11Electrostatic force.I.e. it is easy to be operated to the cutter 11 being accommodated in cutter container 2.In addition, being easy visually to be accommodated in cutter appearanceCutter 11 in device 2.In addition, in the present embodiment, being provided with and being not penetrated the vertical view of bottom plate 10 is generally circular hole 16, butThe shape in hole 16, configuration, size, quantity etc. are not particularly limited.In addition, in bottom plate 10 and hinge part 8 opposite sidePosition is provided with claw 18 outwardly.
Cover 6 has top plate 20.Peripheral part in the face side 20a of top plate 20 is provided with side wall 22.In addition, in top plateThe 20 face side 20a and than the region of side wall 22 in the inner part be provided with vertical view be substantially a ring-shaped protrusion 24.The internal diameter of protrusion 24 is bigIn the diameter of recess portion 12.
It is circular recess portion 26 that in face, the center in the region of 20a surrounded by protrusion 24, which is provided with vertical view,.Recess portion 26 it is straightDiameter is slightly larger than the diameter of the periphery 14a of protrusion 14.Thereby, it is possible to protrusion 14 is inserted into the recess portion 26.In addition, in face 20aThe region surrounded by protrusion 24 by being formed with multiple holes (keeping out of the way hole) 28 in the way of the recess portion 26.
In this way in the region providing holes 28 of face 20a surrounded by protrusion 24, so as to abated effect in top plate 20With the electrostatic force between cutter 11.I.e. it is easy to be operated to the cutter 11 being accommodated in cutter container 2.In addition, being easy visualThe cutter 11 being accommodated in cutter container 2.
In addition, in the present embodiment, being provided with and being not penetrated the vertical view of top plate 20 is generally circular hole 28, but for hole28 shape, configuration, size, quantity etc. are not particularly limited.In addition, in the side wall 22 of opposite side for being located at hinge part 8Side is provided with claw 30 inwardly.
In the cutter container 2 constituted in this way, by being that fulcrum is closed and rotating cover 6 with hinge part 8, to will receiveReceive cutter 11 recess portion 12 close.In this state, if engaging claw 18 with claw 30, it is able to maintain that cover 6 was closedClosed state.On the other hand, under the open state for opening cover 6, recess portion 12 is also opened.In addition, will be covered relative to incorporating section 4Under the closed state that portion 6 is closed, above-mentioned protrusion 24 is contacted than the position of recess portion 12 in the outer part with the face 10a of bottom plate 10.
Then, the use example of the cutter container of present embodiment 2 is illustrated.(A) of Fig. 2 is to schematically show cutter11 are placed in the cross-sectional view of the state of 4 side of incorporating section, and (B) of Fig. 2 schematically shows cutter 11 and be accommodated in cutter container 2The cross-sectional view of state, (C) of Fig. 2 are the cross-sectional views for schematically showing the state that cutter 11 is placed in 6 side of cover.
When cutter 11 to be accommodated in cutter container 2, such as shown in (A) of Fig. 2, the configuration of cutter 11 is being storedIn the recess portion 12 in portion 4.That is, cutter 11 is placed on the bottom surface of recess portion 12.Furthermore it is possible to be configured in the recess portion 12 in advance slowStamping etc..Thereby, it is possible to be more reliably prevented from the breakage of cutter 11.
After cutter 11 is placed in 4 side of incorporating section, as shown in (B) of Fig. 2, cover 6 is closed and make claw 18 withClaw 30 engages.Cutter 11 is incorporated in cutter container 2 as a result,.In addition, when being configured with knife in the recess portion 12 of incorporating section 4When cover 6 is closed in the state of tool 11, generate space between the region surrounded by protrusion 24 and cutter 11 of cover 6.
It due to the space, is difficult to be transferred to cutter 11 from external power, therefore the breakage of cutter 11 can be prevented.SeparatelyIt outside, can also be in the way of filling up the space in advance in region configuration bolster of cover 6 surrounded by protrusion 24 etc..ByThis, can be more reliably prevented from the breakage of cutter 11.
When taking out cutter 11 from cutter container 2, such as imagining will receipts in the state of being located below cover 6Receive 4 side of portion opening situation.In this case, as shown in (C) of Fig. 2, cutter 11 is placed in 6 side of cover.In present embodimentIn, cover 6 is provided with protrusion 24, therefore even if cutter container 2 tilts, can also protect by protrusion 24 to cutter 11It holds.Cutter 11 will not fall off from cutter container 2 as a result,.
In addition, in the present embodiment, be provided with hole 28 on the face 20a of mounting cutter 11, thus can weaken due toOpening and closing of cutter container 2 etc. and generate, act on electrostatic force (gravitation) between top plate 20 and cutter 11.Being easy as a result, willCutter 11 takes out from cover 6.Similarly, it is also equipped with hole 16 in 4 side of incorporating section, therefore makes the underlying shape in incorporating section 4Under state by cover 6 open in the case where, also can electrostatic force (gravitation) of the abated effect between bottom plate 10 and cutter 11, be easyCutter 11 is taken out from incorporating section 4.
As described above, the cutter container 2 of present embodiment is provided with circular recess portion on the bottom plate 10 for constituting incorporating section 412, the periphery for having a diameter larger than cutter 11 is big, can store to cutter 11, and sets on the top plate 20 for constituting cover 6It is equipped with protrusion 24, than the position in the outer part of recess portion 12 and bottom plate 10 in the state of being closed cover 6 relative to incorporating section 4Contact.It therefore, also can be by convex even in the case where opening 4 side of incorporating section in the state of being located below cover 6Portion 24 keeps cutter 11.
In addition, the record that the present invention is not limited to the above embodiments waits, various modifications may be made and implements.Such as upperIt states in embodiment, cricoid protrusion 24 is provided in cover 6, but the shape for the protrusion, configuration, quantity etc. are without spyIt does not limit.Such as cutter 11 can also be kept by annularly configuring multiple protrusions.
In addition, in the above-described embodiment, be provided in incorporating section 4 with cover 6 this both sides multiple holes (keeping out of the way hole) 16,28, but for example one or more holes only can also be set the side in incorporating section 4 and cover 6.It can certainly be not provided with thisThe hole of sample.
In addition to this, the model without departing from the purpose of the present invention such as the construction of above embodiment and variation, methodIt encloses, then can suitably change.