JP2022134711A - blade case - Google Patents

Abstract

To provide a blade case that additionally has a function of a jig for holding a cutting blade, is good in workability, and is hardly lost.SOLUTION: A blade case can house a cutting blade having a hub base on which a part to be held is provided. The blade case includes a housing body having a housing recess, and a lid for closing an entrance of the housing recess. The housing body includes a housing body side engagement part provided on the side of the entrance of the housing recess. The lid is provided with a hub base holding part capable of surrounding the part to be held of the hub base, a lid side engagement part that engages with the housing body side engagement part, a passing hole passing through a tabular body, and a grip part surrounding the passing hole. The tabular body is provided with a notch extending from the passing hole to the outer periphery. When force is applied to the grip part from the outside, the hub base holding part holds the part to be held of the hub base, and the engagement of the lid side engagement part and the housing body side engagement part is canceled, thereby enabling the lid to be separated from the housing body.SELECTED DRAWING: Figure 2

Description

TECHNICAL FIELD The present invention relates to a blade case that accommodates a cutting blade including a hub base having a gripped portion on its surface to be gripped by an operator (worker), and a cutting edge provided on the outer circumference of the hub base.

2. Description of the Related Art In the manufacturing process of device chips used in electronic devices such as mobile phones and personal computers, first, a plurality of intersecting dividing lines (streets) are set on the surface of a wafer made of a material such as a semiconductor. Then, devices such as ICs (Integrated Circuits) and LSIs (Large Scale Integrations) are formed in the regions partitioned by the planned division lines. After that, the wafer is divided along the planned division lines to form individual device chips.

A cutting device is used to divide the wafer. The cutting device has a spindle and a blade mount fixed to the tip of the spindle. A cutting blade having an annular cutting edge is attached to the blade mount. When cutting the wafer, the spindle is rotated to rotate the cutting blade and lower the cutting blade to a predetermined height position. Then, the workpiece and the cutting blade are relatively moved, and the cutting blade cuts into the wafer along the division line.

BACKGROUND ART In recent years, a cutting blade having an extremely thin cutting edge with a thickness of about 10 μm to 30 μm has been used as a cutting blade attached to a cutting device. If the operator (worker) directly holds the thin cutting blade when replacing the cutting blade, the cutting blade is easily damaged. Therefore, a cutting blade called a hub type having an annular hub base with a cutting edge electrodeposited on the outer peripheral portion is widely known. With the hub-type cutting blade, the operator does not need to directly hold the cutting blade by hand, and can carry the cutting blade by grasping the grasped portion of the hub base.

However, the gripped portion of the hub base itself, on which the operator's finger rests, has a small width, and it is not always easy for the operator to stably grip the gripped portion. In addition, since the hub base and the cutting edge are adjacent to each other, fingers trying to grip the part to be gripped may come into contact with the cutting edge and get injured. The blade may break.

Therefore, there has been proposed a jig for gripping and carrying the cutting blade without allowing the operator to directly touch the cutting blade (see Patent Document 1). Since the operator can stably hold the cutting blade via this jig without directly touching the cutting blade, there is no fear of injury or damage to the cutting edge of the cutting blade.

Japanese Patent No. 5014892

However, when a large number of cutting devices are arranged in a device chip manufacturing factory, it is necessary to arrange jigs near each cutting device in consideration of workability, and a large number of jigs are required. . In addition, since this jig is handled independently of the blade case in which the cutting blade is housed and the cutting blade, the operator has to go and pick up the jig when attaching the cutting blade to the cutting apparatus. Then, the operator is required to open the lid of the blade case by hand, switch the lid to the jig, and grip the cutting blade with the jig.

Moreover, the jig is easily lost because it is left near the cutting equipment when not in use. Then, the operator does not notice the loss of the jig until he tries to use the jig when handling the cutting blade. In this case, not only is the new jig costly, but the operating time of the cutting apparatus is reduced by the amount of time required to prepare the new jig.

The present invention has been made in view of such problems, and its object is to provide a blade case that has the function of a jig for holding a cutting blade, has good workability, and is less likely to be lost. That is.

According to one aspect of the present invention, the hub base has a disk-shaped hub base in which a through hole penetrating through the front surface and the back surface is formed in the center, and a cutting edge is provided on the outer periphery of the hub base on the back surface side. (a) a blade case capable of accommodating a cutting blade having a portion to be gripped on the surface side of the hub base, the case comprising an accommodating body having an accommodating recess capable of accommodating the cutting blade; and a lid closing an entrance of the accommodating recess. a body, wherein the receiving body includes an entry convex portion that enters the through hole from the rear surface side of the hub base, and the rear surface of the hub base that has entered the entry projection portion abuts against each other. a supporting portion for supporting the cutting blade; and a container-side engaging portion provided on the entrance side of the containing concave portion. and a hub base gripping portion formed on one surface of the plate-like body and capable of partially surrounding the gripped portion of the hub base of the cutting blade through a gap. a cover-side engaging portion provided on the outer peripheral portion of the plate-like body and engaged with the container-side engaging portion of the container; a communication hole that opens inward and has a diameter larger than the diameter of the through hole of the hub base and that communicates the one surface and the other surface of the plate-like body; and a grip portion that protrudes from the surface and surrounds the communicating hole. When the force is applied to the gripping portion of the lid, the lid deforms so that the diameter of the communicating hole is reduced, the gap is reduced, and the hub base gripping portion of the cutting blade engages the hub base of the cutting blade. While gripping the gripped portion of the base, the engagement between the lid-side engaging portion and the container-side engaging portion is released, and the gripped portion of the hub base is gripped by the hub base gripping portion. A blade case is provided in which the lid to be gripped is separable from the containing body.

Preferably, the container-side engaging portion has a shape surrounding the lid-side engaging portion from the outside, and one of the container-side engaging portion and the lid-side engaging portion includes the container-side engaging portion and the lid-side engaging portion. An engagement projection is provided to be fitted into an engagement recess provided on the other side of the lid-side engagement portion.

Preferably, one or both of the notch and the communication hole of the plate-like main body of the lid are closed with a cover member that is more flexible than the plate-like main body.

Further, preferably, the notch of the plate-like main body of the lid is formed linearly from the communication hole to the outer circumference.

Further, preferably, a plurality of small grooves are provided on the outer surface of the grip portion of the lid.

A blade case according to one aspect of the present invention includes a housing body having a housing recess that can house a cutting blade, and a lid that closes the entrance of the housing recess. The plate-like main body of the lid made of an elastic material includes a communicating hole, a grip portion surrounding the communicating hole, a notch extending from the communicating hole to the outer circumference, and a hub base of the cutting blade. A hub base gripping portion is provided that can be wrapped around the base.

When the cutting blade stored in the blade case and transported is attached to the cutting device, the operator grips the handle of the cover of the blade case. When force is applied to the grip portion from the outside, the lid deforms and the hub base gripping portion grips the hub base of the cutting blade, and the lid side engaging portion and the container side engaging portion are engaged. disengagement. Therefore, when the operator pulls out the lid as it is from the container, the cutting blade is gripped through the lid.

That is, the lid functions as a jig for the operator to hold and carry the cutting blade without directly touching the cutting blade. Since this cover is carried together with the cutting blade as a part of the blade case that accommodates the cutting blade, there is no need to search for the jig when holding the cutting blade, and there is no fear of losing the jig. In the first place, since there is no need to prepare jigs in addition to the blade case, the cost required for jigs can be reduced.

When the operator holds the handle of the lid, two operations of holding the cutting blade and opening the blade case are simultaneously performed. Furthermore, since the lid body is adjacent to the cutting blade from the beginning, there is no need to even bring the jig into contact with the cutting blade. Therefore, when this blade case is used, the time required to attach the cutting blade to the cutting device can be shortened, and the operating time of the cutting device can be increased. The benefits are immeasurable, since each time the cutting blade is replaced, the effect of increasing the operating time of the cutting equipment is accumulated.

Thus, according to one aspect of the present invention, there is provided a blade case that also functions as a jig for holding a cutting blade, has good workability, and is less likely to be lost.

Fig. 2 is an exploded perspective view schematically showing the configuration of a portion of the cutting unit of the cutting device; FIG. 3 is a perspective view schematically showing a configuration example of a blade case; FIG. 3(A) is a plan view schematically showing the back side of the container, FIG. 3(B) is a plan view schematically showing the front side of the container, and FIG. , and FIG. 3D is a plan view schematically showing the back side of the lid, and FIG. 3D is a plan view schematically showing the front side of the lid. FIG. 4 is a cross-sectional view schematically showing a blade case and cutting blades accommodated in the blade case;

Embodiments of the present invention will be described with reference to the accompanying drawings. A blade case according to the present embodiment is a container that accommodates a cutting blade attached to a cutting device that cuts a workpiece. An operator carries a blade case containing a cutting blade to the cutting device, takes out the cutting blade from the blade case, and mounts it on the cutting device. A cutting device cuts a workpiece by rotating the cutting blade and causing the cutting blade to cut into the workpiece.

The workpiece is, for example, a substantially disk-shaped wafer made of Si (silicon), SiC (silicon carbide), GaN (gallium nitride), GaAs (gallium arsenide), or other semiconductor materials. . Alternatively, the workpiece is a plate-like substrate made of a material such as sapphire, quartz, glass, ceramics, or the like. Examples of the glass include alkali glass, alkali-free glass, soda-lime glass, lead glass, borosilicate glass, and quartz glass. However, the workpiece is not particularly limited.

For example, a plurality of devices such as ICs and LSIs are formed on the surface of the workpiece. A dividing line is set on the workpiece between the devices. Then, by cutting the workpiece along the dividing lines with a cutting device to divide the workpiece, individual device chips can be formed. FIG. 1 is an exploded perspective view schematically showing a configuration of part of a cutting unit 2 provided in a cutting device.

First, the cutting blade 1 accommodated in the blade case according to this embodiment will be described. A cutting blade 1 called a hub type shown in FIG. 1 and the like has a disk-shaped hub base 3, and a cutting edge 7 is provided on the outer periphery of the hub base 3 on the back surface 3b side.

The hub base 3 is made of a metal material such as aluminum or stainless steel. The cutting edge 7 is formed by hardening abrasive grains such as diamond with a binding material such as resin or metal (typically nickel), and protrudes radially outward from the outer peripheral portion of the hub base 3 . The cutting edge 7 is formed to have a thickness of about 10 μm to 30 μm by plating or the like. However, the material, size (thickness), manufacturing method, etc. of the hub base 3 and the cutting edge 7 are not particularly limited.

A through hole 5 is formed in the center of the hub base 3 so as to pass through the front surface 3a and the rear surface 3b. On the surface 3a side of the hub base 3, there is provided a gripped portion 9 that is gripped by an operator when attaching a new cutting blade 1 to the cutting device or when removing the used cutting blade 1 from the cutting device. . The gripped portion 9 is formed in an annular shape surrounding the through hole 5 and protrudes toward the surface 3 a of the hub base 3 . Also, the diameter of the gripped portion 9 is slightly larger on the distal end side than on the proximal end side.

Next, the cutting unit 2 will be explained. The cutting unit 2 has a spindle 6 that constitutes a rotating shaft, and a cutting blade 1 is fixed to the tip of the spindle 6 via a flange mechanism 8 . The base end side of the spindle 6 is accommodated in the spindle housing 4 . Inside the spindle housing 4, a spindle 6 is rotatably supported by air bearings. Furthermore, a spindle motor (not shown) is provided inside the spindle housing 4 to rotate the spindle 6 around its extension direction.

A flange mechanism 8 is fixed to the tip of the spindle 6 . A flange mechanism 8 is used to fix the cutting blade 1 to the tip of the spindle 6 . A flange mechanism 8 that holds the hub-type cutting blade 1 includes a cylindrical boss portion 12 that is inserted into the through hole 5 of the hub base 3 of the cutting blade 1 . The flange mechanism 8 also includes a flange portion 10 that protrudes radially outward from the rear side of the boss portion 12 . The flange portion 10 has a support surface 10 a that supports the back surface 3 b side of the hub base 3 of the cutting blade 1 .

Further, the flange mechanism 8 has a spindle mounting hole (not shown) into which the tip of the spindle 6 is inserted inside the flange portion 10 . The spindle mounting hole is exposed on the rear side of the flange mechanism 8 . The spindle 6 has, for example, a tapered shape in which the diameter decreases toward the tip, and the outer peripheral surface thereof has a tapered shape. The inner surface of the spindle mounting hole has a tapered shape corresponding to the tapered shape of the outer peripheral surface of the spindle 6 . The flange mechanism 8 is fixed to the tip of the spindle 6 with a fixing screw or the like (not shown).

Also, the outer diameter of the boss portion 12 corresponds to the inner diameter of the through hole 5 of the hub base 3 of the cutting blade 1 . When fixing the cutting blade 1 to the tip of the spindle 6 using the flange mechanism 8 , the boss portion 12 of the flange mechanism 8 is passed through the through hole 5 of the hub base 3 . A screw thread 14 is formed on the outer peripheral surface of the tip portion of the boss portion 12 . When the boss portion 12 is passed through the through hole 5 of the hub base 3 and a fixing nut 16 is screwed to the tip of the boss portion 12, the hub base 3 is sandwiched between the flange portion 10 and the fixing nut 16, and cut. Blade 1 can be fixed.

Attachment of the cutting blade 1 to the flange mechanism 8 is performed by an operator using the cutting device. However, the width of the gripped portion 9 of the hub base 3 is small, and it is not easy for the operator to grip the gripped portion 9 stably. In addition, since the hub base 3 and the cutting edge 7 are adjacent to each other, the finger trying to grip the gripped portion 9 may come into contact with the cutting edge 7 and be injured, or conversely, the finger may impact the cutting edge 7 . and the cutting edge 7 may be damaged. Therefore, a jig is used to hold and carry the cutting blade 1 without allowing the operator to directly touch the cutting blade 1 .

The lid of the blade case according to this embodiment also functions as this jig. The blade case according to this embodiment is used when accommodating and storing the cutting blade 1 . The cutting blade 1 is carried to the cutting device while being housed in a blade case. Next, the blade case according to this embodiment will be described. FIG. 2 is an exploded perspective view schematically showing the blade case 20 according to this embodiment and the cutting blades 1 housed therein.

The blade case 20 includes a housing body 22 having a housing recess 26 that can house the cutting blade 1 and a lid body 24 that closes the housing recess 26 . The housing body 22 and the lid body 24 of the blade case 20 are made of synthetic resin such as polypropylene, for example, and are separable from each other. Each part of the blade case 20 described below is formed in a shape and size that match the shape and size of each part of the cutting blade 1 to be housed. The shape and size of each part are appropriately determined within the range in which the function can be exhibited.

3A is a plan view schematically showing the rear surface 22b side of the container 22, and FIG. 3B is a plan view schematically showing the front surface 22a side of the container 22. FIG. 3(C) is a plan view schematically showing the rear surface 24b side of the lid 24, and FIG. 3(D) is a plan view schematically showing the front surface 24a side of the lid 24. As shown in FIG. 4 is a cross-sectional view schematically showing a blade case 20 that accommodates the cutting blade 1. As shown in FIG.

First, the container 22 will be described. The housing body 22 is a disk-shaped member having a flat rear surface 22b side and a housing concave portion 26 formed on the front surface 22a side. At the center of the bottom surface of the accommodation recess 26, an entry protrusion 30 is provided that enters the through hole 5 from the rear surface 3b side of the hub base 3. As shown in FIG. The entry projection 30 is formed in a size and shape that can be inserted into the through hole 5 , and is preferably formed in a cylindrical shape with a diameter equivalent to that of the boss portion 12 of the flange mechanism 8 of the cutting unit 2 . The height of the entering protrusion 30 is preferably greater than the length of the through hole 5 .

A flat support portion 32 with which the rear surface 3b of the hub base 3 abuts is provided around the entry protrusion 30 on the bottom surface of the accommodation recess 26 of the accommodation body 22 . The support portion 32 is composed of an annular region having an outer diameter smaller than the inner diameter of the cutting edge 7 of the cutting blade 1 .

An annular recess 34 that functions as a space for accommodating the cutting edge 7 of the cutting blade 1 accommodated in the accommodation recess 26 is provided around the support portion 32 on the bottom surface of the accommodation recess 26 of the accommodation body 22 . The annular recess 34 is formed in the container 22 to secure a space for preventing the cutting edge 7 from coming into contact with each component of the blade case 20 when the cutting blade 1 is housed in the housing recess 26 . That is, the annular recess 34 has an inner diameter smaller than the inner diameter of the cutting edge 7 of the cutting blade 1, an outer diameter larger than the outer diameter of the cutting edge 7, and a depth greater than the thickness of the cutting edge 7. have

A cylindrical side wall 36 is provided on the outer side of the annular concave portion 34 of the container 22 so as to stand toward the surface 22a. The cylindrical side wall 36 has an inner diameter which is greater than the outer diameter of the cutting edge 7 of the cutting blade 1 . The height of the side wall 36 is preferably determined so that the cutting blade 1 can be sufficiently accommodated in the accommodation recess 26 , and is preferably greater than the thickness of the hub base 3 .

A container-side engaging portion 38 is provided on the inner surface of the side wall 36 on the inlet 28 side of the housing recess 26 . The container-side engaging portion 38 has a function of engaging with a lid-side engaging portion of the lid 24, which will be described later. The structure and function of the container side engaging portion 38 will be described in detail later.

Next, the lid 24 used in combination with the container 22 will be described. The cover 24 is made of an elastic material and has a plate-like main body 40 shaped to correspond to the inlet 28 of the container 22 . For example, the plate-like main body 40 is formed in a substantially disk shape and has a diameter equivalent to that of the entrance 28 of the container 22 .

Here, the elastic material refers to a material that deforms when an external force is applied from the outside, but returns to its original shape when the external force is removed. The elastic material used for the lid 24 is preferably a material that can be deformed by a force applied to an object when a person's fingertips pick it up. The plate-like main body 40 is made of synthetic resin such as polypropylene, for example.

A hub base gripping portion 42 capable of partially surrounding the gripped portion 9 of the hub base 3 of the cutting blade 1 via a gap 44 is formed on one surface side (back surface 24b side) of the plate-shaped main body 40 . be. The hub base gripping portion 42 has a substantially cylindrical shape and stands upright from the outer peripheral portion of the one surface of the plate-like main body 40 .

The inner diameter of the hub base gripping portion 42 is larger than the diameter of the gripped portion 9 of the hub base 3 . A claw portion 46 slightly protruding inward is formed at the tip of the hub base holding portion 42 . The claw portion 46 is formed at a position corresponding to the position of the gripped portion 9 of the hub base 3 of the cutting blade 1 . When the plate-shaped main body 40 is deformed as described later, the claw portion 46 engages the gripped portion 9 of the hub base 3 of the cutting blade 1, preventing the cutting blade 1 from coming off the lid 24. FIG.

A communication hole 50 is formed in the center of the plate-like main body 40 so as to communicate between one surface (back surface 24b side) and the other surface (front surface 24a side) of the plate-like main body 40 . The communication hole 50 opens inwardly of the hub base gripping portion 42 on one surface (back surface 24 b side) of the plate-like main body 40 and is larger than the diameter of the through hole 5 of the hub base 3 of the cutting blade 1 . diameter.

The lid body 24 is provided with a grip portion 52 that protrudes from the other surface (surface 24 a side) of the plate-like main body 40 and surrounds the communication hole 50 . A notch 56 extending from the communication hole 50 to the outer periphery is formed in the plate-like main body 40 . The notch 56 of the plate-like main body 40 of the lid 24 is formed, for example, in a straight line from the communication hole 50 to the outer circumference. However, the shape of the notch 56 is not limited to this.

The grip portion 52 is a portion for the operator of the cutting device to grip with his/her fingertips. The operator can apply a radially inward force to the grip portion 52 by pinching the grip portion 52 with a plurality of fingers of one hand. A plurality of small grooves 54 are preferably provided on the outer surface of the grip portion 52 so that the operator can easily grip the grip portion 52 with fingers.

A notch 56 is formed in the plate-like main body 40, so that when an operator pinches the grip portion 52 with his fingers and applies a radially inward force to the grip portion 52, the plate-like main body 40 formed of an elastic material is retracted. transform. Specifically, both wall surfaces of the notch 56 are brought closer to each other, the diameter of the communication hole 50 is reduced, and the outer diameter of the plate-like main body 40 is deformed to be reduced. Then, when the operator releases his fingers from the grip portion 52, the external force is no longer applied to the grip portion 52, and the plate-like body 40 returns to its original shape.

A lid-side engaging portion 48 that engages with the container-side engaging portion 38 of the container 22 is provided on the outer peripheral portion of the plate-like main body 40 . For example, the lid-side engaging portion 48 is provided in a convex shape on the outer peripheral surface 40a of the plate-like main body 40 .

Here, the container-side engaging portion 38 of the container 22 and the lid-side engaging portion 48 of the lid 24 will be described in detail. The container-side engaging portion 38 and the lid-side engaging portion 48 are engageable with each other. When both are engaged with each other, container 22 and lid 24 are integrated. When the housing body 22 and the lid body 24 are integrated with the cutting blade 1 housed in the housing recess 26 of the housing body 22 , the cutting blade 1 is safely stored inside the blade case 20 . The cutting blade 1 can be safely transported in this state.

As shown in FIG. 4 and the like, the container-side engaging portion 38 preferably has a shape surrounding the lid-side engaging portion 48 from the outside. In this case, one of the container-side engaging portion 38 and the lid-side engaging portion 48 has an engaging convex portion that fits into an engaging concave portion provided in the other of the container-side engaging portion 38 and the lid-side engaging portion 48. is provided. When the engaging protrusion is fitted in the engaging recess, the engaging protrusion is caught in the engaging recess, and the container-side engaging portion 38 and the lid-side engaging portion 48 are engaged with each other.

When the operator grips the grip portion 52 of the lid body 24 with fingers and the outer diameter of the plate-like main body 40 becomes small, the engagement convex portion comes out of the engagement concave portion, and the container-side engagement portion 38 and the lid-side engagement portion 48 are separated. be done. That is, the engagement between the container-side engaging portion 38 and the lid-side engaging portion 48 is released. At this time, even if the operator moves the lid 24 away from the container 22, the engaging projection does not get caught in the engaging recess, so that the lid 24 and the container 22 can be separated.

Further, when a force directed toward the communication hole 50 is applied to the grip portion 52 of the lid body 24 from the outside, the lid body 24 is deformed so that the diameter of the communication hole 50 is reduced, and the gripped portion of the hub base 3 is deformed. 9 and the hub base gripping portion 42 is reduced. Then, the hub base gripping portion 42 comes into contact with the gripped portion 9 of the hub base 3 , and the deformation of the lid body 24 stops when the hub base gripping portion 42 grips the hub base 3 of the cutting blade 1 .

That is, in the blade case 20 according to the present embodiment, when the operator pinches the grip portion 52 of the lid 24, the engagement between the lid-side engaging portion 48 and the housing-side engaging portion 38 is released, and the hub base 20 is disengaged. The lid body 24 that grips the cutting blade 1 with the base gripping portion 42 can be separated from the housing body 22 . Therefore, the operator can open the blade case 20 and grip the cutting blade 1 via the lid 24 in one operation.

When attaching the cutting blade 1 to the flange mechanism 8 of the cutting unit 2 , the operator can hold the cutting blade 1 via the lid 24 and carry the cutting blade 1 to the flange mechanism 8 . Then, the boss portion 12 of the flange mechanism 8 is passed through the through hole 5 exposed on the rear surface 3b side of the hub base 3 as it is.

Here, if the diameter of the communicating hole 50 in the deformed state of the lid body 24 is made larger than the diameter of the through hole 5 of the hub base 3, that is, if the diameter of the boss portion 12 is made larger, the boss portion 12 is The boss part 12 can enter the communication hole 50 of the lid body 24 as it is when passing through the through hole 5 . Therefore, the boss portion 12 does not collide with the lid body 24, and the cutting blade 1 can be moved until the rear surface 3b of the hub base 3 contacts the supporting surface 10a of the flange portion 10 of the flange mechanism 8.

Thereafter, when the operator relaxes the gripping portion 52 of the lid 24, the lid 24 returns to its original shape, and the hub base 3 is released from the hub base gripping portion 42. FIG. When the lid 24 is pulled out from the boss 12 , the lid 24 can be removed from the cutting unit 2 while the cutting blade 1 remains on the flange mechanism 8 .

Next, the fixed nut 16 is tightened to the thread provided at the tip of the boss portion 12 with a predetermined amount of force, and the cutting blade 1 is sandwiched between the fixed nut 16 and the flange portion 10 of the flange mechanism 8. , the cutting blade 1 is fixed to the flange mechanism 8 . Then, the lid body 24 used to carry in the cutting blade 1 is preferably returned to the housing body 22 and integrated therewith.

When the lid 24 is stored in the state of the blade case 20, only the lid 24 is not lost and searching for the lid 24 later is eliminated. At least, when removing the used cutting blade 1 from the cutting unit 2 of the cutting apparatus, there is no need to search for the lid 24 in addition to searching for the blade case 20 .

When removing the used cutting blade 1 from the cutting unit 2 , first, the fixing nut 16 is loosened and removed from the boss portion 12 . Then, the grip portion 52 of the lid body 24 is picked up with fingers, and the lid body 24 is removed from the housing body 22 . Next, the boss portion 12 is passed through the communication hole 50 of the lid 24 , and the rear surface 24 b side of the lid 24 is brought into contact with the front surface 3 a of the hub base 3 of the cutting blade 1 . At this time, if the operator loosens the gripping portion 52 in advance, the claw portion 46 of the hub base gripping portion 42 of the lid 24 does not interfere with the hub base 3 .

After that, when the operator increases the grip portion 52 and deforms the plate-like main body 40 of the lid body 24, the claw portion 46 of the hub base gripping portion 42 is engaged with the gripped portion 9 of the hub base 3, and the hub is moved. The base 3 is held by the lid 24 . The cutting blade 1 can be removed from the flange mechanism 8 by pulling out the lid 24 from the boss 12 while maintaining this state.

Then, while the cutting blade 1 is accommodated in the accommodation recess 26 of the accommodation body 22 as it is, the cover 24 is inserted into the entrance 28 of the accommodation recess 26 of the accommodation body 22 . When the operator releases the grip portion 52 at this point, the plate-like main body 40 returns to its original shape, the container-side engaging portion 38 and the lid-side engaging portion 48 are engaged with each other, and the cutting blade 1 is held in the blade case. 20 is accommodated. At this time, since the lid 24 is integrated with the container 22 , the operator does not have to think about where to store the lid 24 used to remove the cutting blade 1 .

As described above, according to the blade case 20 according to this embodiment, when the cutting blade 1 is attached to the cutting apparatus, the operator can hold and carry the cutting blade 1 without directly touching it. Since this lid is carried together with the cutting blade 1 as a part of the blade case 20 that houses the cutting blade 1, there is no need to search for the jig when gripping the cutting blade 1, and there is concern about the loss of the jig. no. In the first place, since there is no need to prepare a jig other than the blade case 20, the cost required for the jig can be reduced.

When the operator holds the grip portion 52 of the lid 24, two operations of holding the cutting blade 1 and opening the blade case 20 are performed simultaneously. Furthermore, since the lid 24 is adjacent to the cutting blade 1 from the beginning, it is not even necessary to bring the jig into contact with the cutting blade. Therefore, when this blade case 20 is used, the time required to attach the cutting blade to the cutting device can be shortened, and the operating time of the cutting device can be increased.

It should be noted that the present invention is not limited to the description of the above embodiment and the like, and can be implemented with various modifications. For example, in the embodiment described above, the notch 56 is formed in the plate-like main body 40 of the lid 24, so that the plate-like main body 40 can be deformed. When the storage body 22 and the lid body 24 are integrated and the entrance 28 of the storage recess 26 is closed, the notch 56 reduces the airtightness of the blade case 20 .

Therefore, in the blade case 20 according to one aspect of the present invention, in order to suppress the deterioration of the airtightness of the blade case 20 due to the notch 56, the notch is formed by a film-like cover member that is more flexible than the plate-like main body 40. 56 may be blocked. In this case, since the cover member bends when the operator grips the grip portion 52, deformation of the plate-like main body 40 is not hindered.

For example, when the used cutting blade 1 is removed from the cutting device and stored in a blade case, it is conceivable that the cutting chips and the like adhering to the cutting blade 1 fall off from the cutting blade 1 . However, if the notch 56 is closed by the cover member, the processing waste and the like will not leak out from the notch 56 to the surroundings. Conversely, dust and the like do not enter the inside of the blade case from the outside through the notch 56 . Note that this cover member may be provided so as to block the communication hole 50 on the surface 24 a side of the lid 24 .

In addition, the structures, methods, and the like according to the above embodiments and modifications can be changed as appropriate without departing from the scope of the purpose of the present invention.

REFERENCE SIGNS LIST 1 cutting blade 3 hub base 3a front surface 3b rear surface 5 through hole 7 cutting edge 9 gripped portion 2 cutting unit 4 spindle housing 6 spindle 8 flange mechanism 10 flange portion 10a support surface 12 boss portion 14 thread 16 fixing nut 20 blade case 22 container 22a, 24a front surface 22b, 24b: back surface 24 lid 26 housing recess 28 entrance 30 entrance convex portion 32 support portion 34 annular recess 36 side wall 38 container side engaging portion 40 plate-like main body 40a outer peripheral surface 42 hub base grip Part 44 Gap 46 Claw Part 48 Lid Body Side Engagement Part 50 Communication Hole 52 Grip Part 54 Small Groove 56 Notch

Claims (5)

A disk-shaped hub base having a central through hole penetrating through the front surface and the back surface, a cutting edge being provided on the outer circumference of the back surface side of the hub base, and the front surface side of the hub base. A blade case that can accommodate a cutting blade having a gripped portion in the
a housing body having a housing recess capable of housing the cutting blade;
a lid that closes the entrance of the housing recess,
The container is
an entry projection that enters the through hole from the rear surface side of the hub base;
a support portion for supporting the cutting blade by abutting the rear surface of the hub base entered into the entry protrusion;
a container side engaging portion provided on the entrance side of the containing recess,
The lid has
a plate-like main body made of an elastic material and having a shape corresponding to the entrance of the container;
a hub base gripping portion that is formed on one surface of the plate-like body and can partially surround the gripped portion of the hub base of the cutting blade through a gap;
a cover-side engaging portion provided on the outer peripheral portion of the plate-like main body and engaged with the container-side engaging portion of the container;
The one surface of the plate-like main body opens inwardly of the hub base gripping portion and has a diameter larger than the diameter of the through-hole of the hub base, and the one surface of the plate-like main body and a communicating hole that communicates with the other surface;
a grip portion protruding from the other surface of the plate-like main body and surrounding the communication hole,
The plate-shaped main body is provided with a notch extending from the communication hole to the outer periphery,
When a force directed toward the communication hole is applied to the grip portion of the lid from the outside, the lid deforms so that the diameter of the communication hole becomes smaller, the gap is reduced, and the hub base is deformed. When the gripping portion grips the gripped portion of the hub base of the cutting blade, the engagement between the lid-side engaging portion and the container-side engaging portion is released, and the gripped portion of the hub base is released. A blade case, wherein the lid, which grips the gripping portion with the hub base gripping portion, is separable from the containing body. The container-side engaging portion has a shape surrounding the lid-side engaging portion from the outside,
One of the container-side engaging portion and the lid-side engaging portion is provided with an engaging convex portion that fits into an engaging concave portion provided in the other of the container-side engaging portion and the lid-side engaging portion. A blade case according to claim 1, characterized in that One or both of the notch and the communication hole of the plate-like main body of the lid are closed with a cover member having higher flexibility than the plate-like main body. 3. The blade case according to item 2. 4. The blade case according to any one of claims 1 to 3, wherein the notch of the plate-like body of the lid is formed linearly from the communicating hole to the outer periphery. 5. The blade case according to any one of claims 1 to 4, wherein a plurality of small grooves are provided on the outer surface of the grip portion of the lid.

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