JP3783165B2 - Blade case - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a blade case for accommodating an ultrathin blade such as a hub blade.
[0002]
[Prior art]
As shown in FIG. 6, in a precision cutting apparatus such as a dicer for dicing a semiconductor wafer, the wafer W (from the cassette C mounted on the vertically moving cassette mounting area A to the frame F via the adhesive tape N). Fixed) is carried out to the standby area D by the carrying-in / out means B, and is carried to the chuck table T by the carrying means E having a turning arm, and the chuck table T holding the wafer W is positioned on the alignment means G. After alignment, the wafer W is diced by cutting means H provided with a hub blade J and the like as shown in FIG.
As shown in FIG. 7, the cutting means H has a hub blade J or the like detachably attached to a tip end portion of a spindle I via a mounting nut K, and has a thickness of several μm to several tens of meters provided on the outer peripheral portion thereof. Cutting is performed with a very thin blade edge Jb of μm.
[0003]
[Problems to be solved by the invention]
The hub blade J and the like are normally accommodated in a hard case so that the extremely thin blade edge portion Jb is not lost during transportation or storage. However, the shape and configuration of the conventional hard case are as follows. There is a problem.
(1) Since it has a circular shape corresponding to a hub blade or the like, it is easy to roll and there are some problems in terms of stability.
{Circle around (2)} Since the housing part and the lid part are separate, handling is inconvenient during use and the separated lid part may be lost.
(3) The configuration of an automatic opening / closing device that accommodates or removes a hub blade or the like in a case is somewhat complicated.
The present invention is made in order to eliminate the conventional drawbacks and problems, and is difficult to roll and excellent in stability, and the housing portion and the lid portion are integrally formed so that it is easy to handle during use and the lid portion is lost. It is an object of the present invention to provide a blade case that does not need to be performed and that can simplify the configuration of an automatic switch.
[0004]
[Means for Solving the Problems]
As a means for technically solving the above problems, the present invention provides a blade case for protecting a cutting edge portion of an ultrathin blade such as a hub blade.
The housing part and the lid part are integrally formed via a hinge, and at least the side part including the hinge is straight,
In the housing portion, a circular convex portion in which the central hole of the blade is loosely fitted is formed on the inner bottom portion, and a semi-elliptical concave portion that opens on the back side of the bottom portion is formed around the circular convex portion,
On the front side of the lid portion, a semi-elliptical convex portion that is loosely fitted in the semi-elliptical concave portion is formed, and is configured not to fall off when the blade cases are stacked, and the straight line of the semi-elliptical convex portion The gist of the blade case is that the portion and the straight portion of the semi-elliptical concave portion are combined to form a rotation restricting portion of the blade case.
The gist of the invention is that a receiving convex portion is formed on the inner bottom portion of the housing portion so that the blade portion of the blade does not contact the bottom portion, and that the blade case is made of synthetic resin. It is.
[0005]
[Operation]
Since the housing part and the lid part are integrally formed via a hinge, and at least the side part including the hinge is straight, it is difficult to roll, has excellent stability, and is easy to handle during use and the lid part can be lost. In addition, the structure of the automatic switch is simplified.
[0006]
【Example】
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
In FIG. 1, reference numeral 1 denotes a blade case main body integrally formed of synthetic resin, and includes a housing portion 2 and a lid portion 3 that is formed in the housing portion 2 through a hinge 4 so as to be opened and closed.
[0007]
The accommodating portion 2 is formed with a convex portion 2a for loosely fitting a hub blade at the center of the inner bottom portion, and a concave portion 2b that opens to the back side of the bottom portion as shown in FIG. 2 is formed around the convex portion 2a. The step 2c bulged inside the bottom by the recess 2b has a semi-elliptical shape, that is, the outer shape of the recess 2b is a semi-elliptical shape smaller than the step 2c by the thickness, and the straight portion is as described below. When the blade case body 1 is stacked, the rotation restricting portion P is formed.
[0008]
Further, an annular bottom receiving portion is concentric with the convex portion 2a and slightly larger than the outer shape of the stepped portion 2c (however, both straight ends of the stepped portion 2c protrude outward) at the inner bottom portion of the accommodating portion 2. The convex part 2d for protrusion protrudes, and as shown in FIG. 2, the height of the convex part 2d for receiving is made a little higher than the step part 2c. Note that the height of the convex portion 2a for loosely fitting the hub blade is also made higher than the peripheral wall 2e of the accommodating portion 2.
[0009]
Further, the accommodating portion 2 is formed in a semi-elliptical shape in which the stepped portion 2c is enlarged in a similar shape, and the center on the arc portion side is recessed with the peripheral wall 2e inward and is locked to the upper edge of the recessed portion 2f. A small protrusion 2g is formed, and a side 2h opposite to the small protrusion 2g is formed in a straight line including the hinge 4.
[0010]
On the other hand, a convex portion 3a loosely fitted in the concave portion 2b is formed on the front side of the lid portion 3 in a semi-elliptical shape so that it does not fall off when the blade case body 1 is stacked as described later, The portion is configured to be a rotation restricting portion Q in combination with the straight portion of the concave portion 2b.
[0011]
On the back side of the lid portion 3, there is a concave portion 3 b generated by the formation of the convex portion 3 a, that is, the outer shape of the concave portion 3 b is a semi-elliptical shape smaller than the convex portion 3 a by a thickness. Further, the lid portion 3 is formed in a semi-elliptical shape in which the concave portion 3b is enlarged in a similar shape, and a locking portion 3c is formed at the center of the arc portion to engage and disengage with the small protrusion 2g of the housing portion 2. Yes.
[0012]
The blade case according to the present invention is configured as described above, and in order to use it, the center hole Ja of the hub blade J is dropped as shown in FIG. As shown in FIG. 4, the hub blade J is received by the annular receiving convex portion 2 d, and the extremely thin blade edge portion Jb is protected without contacting the bottom surface of the housing portion 2.
[0013]
At this time, the upper end portion of the convex portion 2a slightly protrudes from the central hole Ja of the hub blade J, and the lid portion 3 is rotated by the hinge 4 as shown by a two-dot chain line in FIG. 2 and the locking portion 3c is pushed down, the locking portion 3c can be locked by the elastic action and the lid portion 3 can be closed. The upper end portion of the convex portion 2a is accommodated in the concave portion 3b of the lid portion 3 as shown in FIG.
[0014]
In this way, one hub blade J can be accommodated in one blade case body 1 and can be transported or stored in this state. As described above, since the side portion including the hinge 4 is formed in a straight line, the blade case body 1 does not roll and is extremely excellent in stability.
[0015]
FIG. 5 shows a state in which a plurality of blade case bodies 1 are stacked, that is, the concave portion 2b on the back side of the bottom portion of the accommodating portion 2 of the blade case body 1 to be placed on the upper portion of the lid portion 3 of the lower blade case body 1. By fitting to the front-side convex portion 3a, it can be stacked up sequentially.
At this time, since the concave portion 2b and the convex portion 3a are fitted, there is no dropout or positional deviation when stacked, and each blade case body is controlled by the rotation restricting portions P and Q of the concave portion 2b and the convex portion 3a. 1 is prevented from rotating, and the alignment state can be maintained. Therefore, it is convenient for transportation and storage of a large number of blade case bodies 1.
[0016]
In order to take out the hub blade J from the blade case body 1, the locking portion 3 c of the lid portion 3 is removed from the small protrusion 2 g of the housing portion 2, the lid portion 3 is opened via the hinge 4, and the hub portion of the hub blade J is formed. What is necessary is just to lift it up with a finger | toe and to extract from the convex part 2a of the accommodating part 2. FIG.
[0017]
As described above, the lid portion 3 is formed integrally with the housing portion 2 via the hinge 4, so that even if the lid portion 3 is opened, it is not separated from the housing portion 2 as in the prior art. Loss can be prevented in advance.
In addition, the lid portion 3 is easy to handle and convenient during use, and when an automatic opening / closing device (not shown) for the lid portion 3 is introduced, the lid portion is hinged to simplify the opening / closing operation mechanism. Thus, the configuration of the automatic switch can be simplified.
The blade case according to the present invention is not limited to housing the hub blade, and may accommodate a washer type blade.
[0018]
【The invention's effect】
As described above, according to the present invention, in the blade case, the housing portion and the lid portion are integrally formed via the hinge, and at least the side portion including the hinge is a straight line. It is excellent in handling, is easy to handle at the time of use, does not lose the lid portion, and the structure of the automatic opening / closing device becomes simple. Furthermore, due to the configuration provided with a semi-elliptical recess opening on the back side of the bottom of the housing part and a semi-elliptical convex part on the front side of the lid part fitted thereto, it is possible to prevent dropping when the blade cases are stacked, In addition, since the straight portion of the semi-elliptical convex portion and the straight portion of the semi-elliptical concave portion work together as a rotation restricting portion, the shaft rotation of the blade case is prevented and the stacked alignment state can be maintained.
[Brief description of the drawings]
FIG. 1 is a perspective view of a blade case body showing an embodiment of the present invention.
FIG. 2 is a central longitudinal sectional view of a blade case main body.
FIG. 3 is a perspective view when the hub blade is accommodated.
FIG. 4 is a sectional view showing a housing state of the hub blade.
FIG. 5 is a partially broken sectional view showing a state in which blade case bodies are stacked.
FIG. 6 is a perspective view showing an example of a dicer.
FIG. 7 is an exploded perspective view of the main part of the cutting means.
FIG. 8 is an explanatory diagram when a wafer is cut by a cutting means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Blade case main body 2 ... Accommodating part 2a ... Convex part 2b ... Concave part 2c ... Step part 2d ... Receiving convex part 2e ... Peripheral wall 2f ... Concave part 2g ... Small protrusion 2h ... Side part 3 ... Cover part 3a ... Convex part 3b ... Recess 3c ... Locking part J ... Hub blade Ja ... Central hole Jb ... Cutting edge part P, Q ... Rotation restricting part

Claims (3)

In the blade case to protect the cutting edge of ultra-thin blades such as hub blades,
A housing portion and the lid portion are integrally formed through a hinge, with side comprising the hinge is in a straight line even without low,
In the housing portion, a circular convex portion in which the central hole of the blade is loosely fitted is formed on the inner bottom portion, and a semi-elliptical concave portion that opens on the back side of the bottom portion is formed around the circular convex portion,
On the front side of the lid portion, a semi-elliptical convex portion that is loosely fitted in the semi-elliptical concave portion is formed, and is configured not to fall off when the blade cases are stacked, and the straight line of the semi-elliptical convex portion The blade case is configured such that the portion and the straight portion of the semi-elliptical concave portion together serve as a rotation restricting portion of the blade case. The blade case according to claim 1 , wherein a receiving convex portion is formed on an inner bottom portion of the housing portion so that a blade portion of the blade does not contact the bottom portion . The blade case according to claim 1 or 2, wherein the blade case is made of a synthetic resin .

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