JPH08323545A - Blade case - Google Patents

Abstract

PURPOSE: To make a blade case hard to roll and excellent in stability and easily handleable at the time of use as well as to avoid the loss of a cover part by a method wherein the blade case is integrally formed of a storage part and a cover part via a hinge, and at least the side part including the hinge forms a straight line. CONSTITUTION: When a center hole Ja of a hub blade is dropped down so as to fit it in a projection 2a of a storage space 2, this hub blade J is received by a ring receiving projection 2d, and a very thin cutter edge part Jb is protected without contact with a bottom surface of the storage part 2. Next, a cover part is turned by a hinge 4, covering the storage space 2, and then when an engaged part 3c is pressed down, it is engaged with a small projection 2g of the storage part 2 by means of an elastic action, closing the cover part 3. At this time, an upper end of the projection 2a in this storage space 2 is housed in a recess 3b of the cover part 3. Since a side part containing the hinge 4 is formed into a straight line, a blade case body 1 will not roll at all, showing very excellent stability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade case for accommodating an extremely thin blade such as a hub blade.

[0002]

2. Description of the Related Art As shown in FIG. 6, in a precision cutting device such as a dicer for dicing a semiconductor wafer, a wafer W (adhesive tape N (Fixed to the frame F through) is carried out to the standby area D by the carry-in / carry-out means B, and is carried to the chuck table T by the carrying means E having a swing arm, and the chuck table T holding the wafer W is aligned. After positioning and aligning with the means G, the wafer W is diced by the cutting means H equipped with the hub blade J and the like as shown in FIG. The cutting means H has a spindle I as shown in FIG.
A hub blade J or the like is detachably attached to the tip end of the hub through a mounting nut K, and a thickness of several μ
Cutting is performed with an ultra-thin cutting edge portion Jb of m to several tens of μm.

[0003]

The hub blade J and the like are normally housed in a hard case so that the ultra-thin blade edge portion Jb is not damaged during transportation or storage, but the shape of the conventional hard case is used. The configuration has the following drawbacks and problems. Since it has a circular shape corresponding to the hub blade and the like, it is easy to roll and has some problems in terms of stability. Since the accommodating portion and the lid portion are separate bodies, handling is inconvenient during use, and the separated lid portion may be lost. The configuration of the automatic opening and closing machine for accommodating and removing the hub blade and the like in the case becomes a little complicated. The present invention has been made to solve the above-mentioned conventional drawbacks and problems, is hard to roll and has excellent stability, and the accommodating portion and the lid are integrally formed so that they are easy to handle during use and the lid is lost. It is an object of the present invention to provide a blade case that does not do so and has a simple structure of an automatic switch.

[0004]

As a means for technically solving the above-mentioned problems, the present invention is a blade case for protecting a cutting edge portion of an ultrathin blade such as a hub blade. The gist is a blade case in which and are integrally formed via a hinge, and at least a side portion including the hinge is linear. Furthermore, a convex portion in which the central hole of the blade is loosely fitted is formed in the center of the accommodating portion, a concave portion is formed on the back side of the bottom portion of the accommodating portion, and the concave portion is loosely fitted on the front side of the lid portion. The convex part is formed,
Being configured not to drop when stacked,
A rotation restricting portion is formed on the concave portion on the bottom rear side of the accommodating portion, a convex portion on the front side of the lid portion, and a convex portion is formed on the inner bottom portion of the accommodating portion so that the blade portion of the blade does not contact the bottom portion. The main point is that it is made of synthetic resin.

[0005]

[Operation] The housing and lid are integrally formed via a hinge, and at least the side including the hinge is straight, so it is hard to roll and has excellent stability. It will not be lost and the structure of the automatic switch will be simple.

[0006]

Embodiments of the present invention will be described below 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, which is composed of a housing portion 2 and a lid portion 3 formed in the housing portion 2 via a hinge 4 so as to be openable and closable.

The accommodating portion 2 has a convex portion 2a for loosely fitting the hub blade, which is formed substantially at the center of the inner bottom portion.
As shown in FIG. 2, around the periphery of the concave portion 2 which opens to the bottom rear side
b is formed, and the stepped portion 2c bulged inward by the recessed portion 2b has a semi-elliptical shape, that is, the outer shape of the recessed portion 2b is a semi-elliptic shape smaller than the stepped portion 2c by the thickness, The portion serves as a rotation restricting portion P when the blade case main bodies 1 are stacked as described later.

Further, the inner bottom portion of the accommodating portion 2 is concentric with the convex portion 2a and slightly larger than the outer shape of the step portion 2c (however,
The both ends of the straight line of the stepped portion 2c are protruded to the outside). An annular receiving convex portion 2d is formed to project, and the height of the receiving convex portion 2d is higher than that of the stepped portion 2c as shown in FIG. It's a little expensive. The height of the convex portion 2a for loosely fitting the hub blade is also higher than that of the peripheral wall 2e of the accommodating portion 2.

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 of the arc portion has the peripheral wall 2e recessed inward and the upper edge of the recessed portion 2f. Has a small protrusion 2g for locking, and the side portion 2h on the opposite side is formed in a straight line including the hinge 4.

On the other hand, on the front side of the lid portion 3, the concave portion 2b is formed.
The convex portion 3a which is loosely fitted to the blade is formed in a semi-elliptical shape so that it does not fall off when the blade case main bodies 1 are stacked as described later, and the linear portion works in combination with the linear portion of the concave portion 2b. It serves as the rotation restricting portion Q.

On the back side of the lid portion 3, there is a concave portion 3b formed by the formation of the convex portion 3a, that is, the outer shape of the concave portion 3b is a semi-elliptical shape smaller than the convex portion 3a by the thickness.
The lid 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 that is engaged with and disengages from the small protrusion 2g of the housing portion 2 is formed in the center of the arc portion side. There is.

The blade case according to the present invention is constructed as described above. To use the blade case, as shown in FIG. 3, the central hole Ja of the hub blade J is fitted into the convex portion 2a of the accommodating portion 2 and is dropped. Then, as shown in FIG. 4, the hub blade J is received by the annular receiving projection 2d, and the extremely thin blade edge Jb is protected without coming into contact with the bottom surface of the housing 2.

At this time, the upper end of the convex portion 2a is slightly projected from the central hole Ja of the hub blade J, and the lid 3 is rotated by the hinge 4 as shown by the chain double-dashed line in FIG. When the cover portion 3 is covered with the cover 2 and the locking portion 3c is pushed down, the lid portion 3 can be closed by being locked by the small protrusion 2g by an elastic action. As shown in FIG. 5, the upper end portion of the convex portion 2a has a lid portion 3a.
It is accommodated in the concave portion 3b.

In this way, one hub blade J can be accommodated in one blade case body 1,
It 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 stable.

FIG. 5 shows a state in which a plurality of blade case bodies 1 are stacked, that is, the recess 2b on the bottom rear side of the accommodating portion 2 of the blade case body 1 to be placed on the lower blade case body 1 is covered. By fitting into the front side convex portion 3a of the portion 3, it is possible to sequentially stack the portions. On this occasion,
Since the concave portion 2b and the convex portion 3a are fitted to each other, there is no dropout or displacement when stacked, and the rotation restricting portions P and Q of the concave portion 2b and the convex portion 3a prevent the shaft of each blade case body 1 from rotating. The rotation is prevented and the aligned state can be maintained. Therefore, it is convenient for transportation and storage of many blade case bodies 1.

From the blade case body 1 to the hub blade J
In order to take out, the locking portion 3c of the lid portion 3 is removed from the small protrusion 2g 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 lifted by hanging a finger on the hub portion. It may be pulled out from the second convex portion 2a.

As described above, since the lid portion 3 is formed integrally with the accommodating portion 2 via the hinge 4, even if the lid portion 3 is opened, the lid portion 3 is not separated from the accommodating portion 2 as in the conventional case, and the lid portion is not separated. Part 3
Can be prevented from being lost. Also, the lid 3 is easy and convenient to use during use, and when an automatic opening / closing device (not shown) for the lid 3 is introduced, the lid is hinged to simplify the opening / closing operation mechanism. Therefore, it is possible to simplify the configuration of the automatic switchgear. The blade case according to the present invention is not limited to housing the hub blade, but may be a washer type blade.

[0018]

As described above, according to the present invention,
In the blade case, the housing and lid are integrally formed via a hinge, and at least the side including the hinge is straight, so it is hard to roll and has excellent stability, and it is easy to handle during use and loses the lid. And an excellent effect such that the configuration of the automatic switch is simplified.

[Brief description of drawings]

FIG. 1 is a perspective view of a blade case body showing an embodiment of the present invention.

FIG. 2 is a central vertical cross-sectional view of a blade case body.

FIG. 3 is a perspective view when housing a hub blade.

FIG. 4 is a sectional view showing a housed state of the hub blade.

FIG. 5 is a partial cross-sectional view showing a state where the 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 an essential part of the cutting means.

FIG. 8 is an explanatory diagram when a wafer is cut by cutting means.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Blade case main body 2 ... Storage part 2a ... Convex part 2b ... Recessed part 2c ... Step part 2d ... Receiving convex part 2e ... Peripheral wall 2f ... Recessed part 2g ... Small projection 2h
... Side part 3 ... Lid part 3a ... Convex part 3b ... Recessed part 3c ... Locking part J ... Hub blade Ja ... Central hole Jb ... Blade edge part P, Q ... Rotation restricting part

Claims (6)

[Claims] 1. In a blade case for protecting a cutting edge portion of an ultrathin blade such as a hub blade, an accommodating portion and a lid portion are integrally formed via a hinge, and at least a side portion including the hinge is linear. Blade case. 2. The blade case according to claim 1, wherein a convex portion in which the central hole of the blade is loosely fitted is formed in the center of the accommodating portion. 3. A recess is formed on the back side of the bottom of the accommodating section, and a convex section is formed on the front side of the lid so as to be loosely fitted in the recess, so that it does not fall off when stacked. The blade case according to claim 1 or 2. 4. The blade case according to claim 1, wherein a rotation restricting portion is formed on a concave portion on the back side of the bottom of the accommodating portion and a convex portion on the front side of the lid portion. 5. The blade case according to claim 1, wherein a convex portion is formed on the inner bottom portion of the accommodating portion so that the blade portion of the blade does not contact the bottom portion. 6. The blade case according to claim 1, which is made of a synthetic resin.