Case Hanger

Abstract

To provide a case hanger capable of improving productivity by making it unnecessary to go for a cutting blade to a cutting blade storage area.SOLUTION: A case hanger 2 for hanging a case 28, in which a cutting blade is accommodated or which is used to accommodate the same, comprises a hook part 4, and a case support part 6 that is suspended from the hook 4.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a case hanger for suspending a case that houses or accommodates a cutting blade. [Background technology]

[0002] A wafer with multiple devices such as ICs and LSIs formed on its surface along planned dividing lines is divided into individual device chips by a dicing machine, and each of the divided device chips is used in electrical equipment such as mobile phones and personal computers.

[0003] The dicing device comprises at least a chuck table for holding the wafer, a cutting means having a rotatable cutting blade for cutting the wafer held on the chuck table, and a processing feed means for processing and feeding the chuck table and the cutting means relative to each other, and is capable of cutting the planned dividing lines of the wafer with high precision (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-36275 Summary of the Invention [Problem to be solved by the invention]

[0005] However, when a cutting blade is damaged, it is necessary to go to the place where the cutting blades are stored to get a new cutting blade and replace the damaged one with the new cutting blade, which results in poor productivity.

[0006] Furthermore, when replacing the cutting blade in response to a change in cutting conditions, the user must go to the storage location to retrieve the cutting blade to be replaced, which results in poor productivity.

[0007] SUMMARY OF THE INVENTION In view of the above, an object of the present invention is to provide a case hanger that can improve productivity by eliminating the need to go to a storage location for cutting blades to retrieve them. [Means for solving the problem]

[0008] According to the present invention, there is provided the following case hanger that solves the above-mentioned problems: That is, the case hanger is for suspending a case that houses or will house a cutting blade, and includes a hook portion and a case support portion that hangs down from the hook portion. A protruding piece that protrudes downward is attached to the case support part, and a connecting hole is formed in the protruding piece. A connecting rod that corresponds to the connecting hole protrudes rearward from the rear surface of the case support part, and the connecting rod is located above the protruding piece. The connecting rod of another case support part is inserted into the connecting hole of the case support part, thereby allowing the plurality of case support parts to be detachably connected to one another. A case hanger is provided.

[0009] Preferably, two or more case support portions are arranged so as to partially overlap each other so as to lean forward. The connecting hole and the connecting rod prevent the connected case support parts from rotating relative to each other. It is preferable to [Effects of the Invention]

[0010] The case hanger of the present invention is a case hanger for suspending a case that houses or will house a cutting blade, and includes a hook portion and a case support portion that hangs down from the hook portion. A protruding piece that protrudes downward is attached to the case support part, and a connecting hole is formed in the protruding piece. A connecting rod that corresponds to the connecting hole protrudes rearward from the rear surface of the case support part, and the connecting rod is located above the protruding piece. The connecting rod of another case support part is inserted into the connecting hole of the case support part, thereby allowing the plurality of case support parts to be detachably connected to one another. Therefore, the necessary cutting blades can be stored in the dicing device, and there is no need to go to the storage location to retrieve the cutting blades, thereby improving productivity. [Brief explanation of the drawings]

[0011] [Figure 1] 1 is a perspective view of a case hanger constructed in accordance with the present invention; [Figure 2] FIG. 2 is a perspective view of the case support portion shown in FIG. 1. [Figure 3] FIG. 10 is a perspective view of a case hanger on which a plurality of case support portions are arranged. [Figure 4] (a) is a perspective view of a case supported by the case support portion of the case hanger shown in Figure 1 and a cutting blade housed in this case, (b) is a perspective view of the case shown in (a) with the lid portion closed. [Figure 5]5 is a perspective view of the case hanger showing a state in which the case shown in FIG. 4 is supported by each case support portion shown in FIG. 3. [Figure 6] FIG. 6 is a perspective view of a dicing device to which the case hanger shown in FIG. 5 is attached. DETAILED DESCRIPTION OF THE INVENTION

[0012] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A preferred embodiment of a case hanger constructed according to the present invention will now be described with reference to the drawings.

[0013] Referring to Figure 1, the case hanger, generally designated by the reference numeral 2, comprises a hook portion 4 and a case support portion 6 hanging down from the hook portion 4. In the illustrated embodiment, the hook portion 4 is formed in a hook shape with an upper end bent in an arc, and the hook portion 4 and the case support portion 6 are connected via a rectangular base plate 8.

[0014] 1 and 2, case support part 6 includes a semicircular rear panel 12 connected to the lower end portion of base plate 8, a semicircular front panel 14 arranged at a distance from rear panel 12 in the front-to-rear direction, and an arc-shaped plate 16 bent in an arc shape connecting the arc-shaped peripheral edge of rear panel 12 with the arc-shaped peripheral edge of front panel 14. The front-to-rear direction is the direction indicated by the letters "front" and "rear" and arrows in Fig. 1, with the front side of the paper being the front and the back side being the rear.

[0015] In the case support part 6, a storage space 18 that stores and supports the case is defined by the rear panel 12, the front panel 14, and the arc-shaped plate 16. The upper end side of the storage space 18 is open, and the lower end side of the storage space 18 is closed by the arc-shaped plate 16. In the case support part 6, the case is placed into the storage space 18 from the open upper end side.

[0016] In the illustrated embodiment, the case support part 6 is provided with a protruding piece 20 that protrudes downward from the center of the arc-shaped plate 16, and a connecting hole 22 that extends in the front-to-rear direction and has a rectangular cross section is formed in the protruding piece 20. The connecting hole 22 may be either a through hole that passes through the protruding piece 20, or a blind hole that does not pass through the protruding piece 20. In addition, as shown in FIG. 2, a connecting rod 24 that has a rectangular cross section and corresponds to the connecting hole 22 protrudes rearward from the outer surface of the rear panel 12.

[0017] Then, by inserting the connecting rod 24 of one case support part 6 into the connecting hole 22 of another case support part 6, the multiple case support parts 6 are detachably connected to one another, as shown in Fig. 3. Because the connecting hole 22 and the connecting rod 24 each have a rectangular (non-circular) cross section, relative rotation between the case support parts 6 is suppressed when the multiple case support parts 6 are connected.

[0018] Although not shown, a connecting hole may also be formed in the substrate 8, and the connecting rod 24 of the case support part 6 may be inserted into the connecting hole of the substrate 8, thereby connecting the substrate 8 and the case support part 6. Alternatively, the substrate 8 and the rear panel 12 of the case support part 6 may be connected by other connecting methods (for example, by adhesive or by connecting using screws).

[0019] 3, when two or more case support parts 6 are arranged, the case support parts 6 are arranged to partially overlap each other so as to lean forward. In other words, because the connecting holes 22 are arranged on the lower end sides of the case support parts 6, when the hook-shaped parts 8 of the hooking parts 4 are hooked on any part of the dicing device, the connected case support parts 6 are inclined forward from the lower end to the upper end, and the lower end part of the case support part 6 on the far side and the upper end part of the case support part 6 on the near side partially overlap when viewed in the front-to-rear direction.

[0020] 4 shows the cutting blade 26 and a case 28 that houses the cutting blade 26. The cutting blade 26 in the illustrated embodiment has an annular base 30 and an annular cutting edge 32 fixed to the outer periphery of the base 30.

[0021] The base 30 may be made of an appropriate metal material such as an aluminum alloy. A circular insertion hole 30a is provided in the center of the base 30, into which a rotation shaft (spindle) for rotating the cutting blade 26 is inserted. A gripping portion 30b is provided on the surface of the base 30 and is held by an operator when attaching the cutting blade 26 to the rotation shaft or when removing the cutting blade 26 from the rotation shaft. In the illustrated embodiment, the gripping portion 30b is formed in an annular shape that protrudes from the periphery of the insertion hole 30a toward the surface of the base 30.

[0022] The cutting blade 32 is formed with a predetermined thickness (for example, about 10 to 30 μm) from abrasive grains such as diamond and a binder such as metal or resin, and protrudes radially outward from the outer periphery of the base 30.

[0023] The case 28, which may be made of an appropriate synthetic resin, includes a storage compartment 34 that stores the cutting blade 26, and a lid 38 that is connected to the storage compartment 34 via a hinge 36 so as to be able to open and close freely. The storage compartment 34 has a bottom plate 40 and a side wall 42 that extends upward from the periphery of the bottom plate 40. The periphery of the bottom plate 40 has a straight portion 40a and a U-shaped portion 40b, and the side wall 42 has a flat portion 42a that extends upward from the straight portion 40a and an arc-shaped portion 42b that extends upward from the U-shaped portion 40b.

[0024] An upwardly protruding cylindrical portion 44 is provided on the inner surface of the bottom plate 40, and the diameter of the cylindrical portion 44 is approximately the same as the diameter of the insertion hole 30a of the cutting blade 26. An annular protrusion 46 protruding upward from the inner surface of the bottom plate 40 is provided around the cylindrical portion 44. The diameter of the annular protrusion 46 is smaller than the inner diameter of the cutting edge 32 of the cutting blade 26. In addition, a first claw 48 is provided on the side wall 42, and a second claw 50 that meshes with the first claw 48 is provided on the cover portion 38.

[0025] When storing the cutting blade 26 in the storage section 34, the insertion hole 30a of the cutting blade 26 is fitted into the cylindrical section 44 of the case 28, and the back surface of the base 30 (the surface opposite to the surface on which the gripping section 30b is provided) is brought into contact with the upper end of the annular protrusion 46. This allows the cutting blade 26 to be stored in the storage section 34 while being fixed. In addition, the lid section 38 is rotated around the hinge section 36 as a fulcrum to close the storage section 34 with the lid section 38, and the first claw 48 and the second claw 50 are engaged, thereby maintaining the storage section 34 in a closed state with the lid section 38, as shown in FIG. 4(b).

[0026] Also, as shown in Figure 4(b), the outer surface of the lid portion 38 is provided with a symbol 52 (shown as "ZH05" in Figure 4) indicating the type of cutting blade 26 housed in the case 28, and an identification code 54 (for example, a barcode or two-dimensional code) for identifying the cutting blade 26 housed in the case 28.

[0027] In the case hanger 2 described above, as shown in Fig. 5, the case 28 is housed in each case support part 6 with the flat part 42a of the side wall 42 of the case 28 facing upward and the lid part 38 facing forward. Furthermore, when the case 28 is housed in the case support part 6, the symbol 52 and the identification code 54 attached to the lid part 38 are exposed, allowing the operator to check the model and identification code 54 of the cutting blade 26 housed in the case 28 in the case support part 6.

[0028] Fig. 6 shows a dicing device 56 to which the case hanger 2 can be attached. The dicing device 56 includes at least a chuck table 58 that suction-holds a workpiece such as a wafer W, cutting means 60 to which a cutting blade 26 that cuts the workpiece suction-held on the chuck table 58 is rotatably attached, and processing feed means (not shown) that relatively feeds the chuck table 58 and the cutting means 60, and the workpiece can be cut with high precision by the rotating cutting blade 26. The wafer W shown in Fig. 6 has its peripheral edge attached to a dicing tape T fixed to an annular frame F, and is supported by the annular frame F via the dicing tape T.

[0029] The outer cover 62 of the illustrated dicing apparatus 56 is provided with a V-shaped hook 64 that protrudes substantially horizontally from the outer cover 62. The necessary cutting blades 26 can be stored in the dicing apparatus 56 by hanging the case hanger 2, which houses the case 28, on the hook 64 and attached to the case support portion 6. Therefore, when the cutting blade 26 is damaged, when the cutting blade 26 is worn out and needs to be replaced with a new cutting blade 26, or when the cutting blade 26 needs to be replaced due to a change in cutting conditions, the case hanger 2 eliminates the need to go to the storage location for the cutting blade 26, thereby improving productivity. The case hanger 2 may also house empty cases 28 for storing cutting blades 26 attached to the dicing apparatus 56.

[0030] In the case hanger 2 of the illustrated embodiment, the multiple case support parts 6 are arranged so that they partially overlap, as if leaning forward, making it easy to put cases 28 in and take them out of the case support parts 6. Also, in the case hanger 2 of the illustrated embodiment, the multiple case support parts 6 can be detachably connected to each other, so by connecting the case support parts 6 according to the number of cases 28, it is possible to store any number of cases 28.

[0031] In the illustrated embodiment, the hook portion 4 of the case hanger 2 is formed in a hook shape, and the hook 64 of the dicing device 56 is formed in a V shape that protrudes substantially horizontally from the outer cover 62, but the shapes of the hook portion 4 and the hook 64 are not limited to the above shapes as long as the hook portion 4 can be hooked onto the hook 64. For example, the hook portion of the case hanger 2 may be formed in a ring shape, and the hook of the dicing device 56 may be formed in an L shape that protrudes substantially horizontally from the outer cover 62 and then extends upward, or the hook portion of the case hanger 2 may be an opening formed in the substrate 8, and the hook of the dicing device 56 may be a protrusion that can be inserted into the opening of the substrate 8. [Explanation of symbols]

[0032] 2: Case hanger 4: Hook 6: Case support 26: Cutting blade 28: Case

Claims

1. A case hanger for hanging a case that contains or will contain a cutting blade, A hook portion and a case support portion that hangs down from the hook portion, A protruding piece that protrudes downward is attached to the case support portion, and a connecting hole is formed in the protruding piece, A connecting rod corresponding to the connecting hole protrudes rearward from a rear surface of the case support portion, and the connecting rod is located above the protruding piece. A case hanger in which a plurality of case support parts are detachably connected to one another by inserting the connecting rods of the other case support parts into the connecting holes of the case support parts.

2. 2. The case hanger according to claim 1, wherein two or more of said case support portions are disposed so as to partially overlap each other so as to bend forward.

3. A case hanger as described in claim 1, wherein the connecting hole and the connecting rod suppress relative rotation between the connected case support parts.

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