JPH0890392A - Cutter grinding device - Google Patents

Abstract

PURPOSE: To secure a sufficiently wide grinding surface even with a thin grinding wheel by forming a grinding disk, and fitting this grinding disk to a grinding wheel table having a vertical rotary shaft in a horizontal condition. CONSTITUTION: When a driving device 3 is driven, a grinding wheel table 25 and a grinding disk 27 fitted thereto are rotated through a spindle 6 and a rotary shaft 14, and a valve disk 51 is vibrated by the vibration of a valve rod 49 which is brought into contact with a boss part 20 of the grinding wheel table 25, and the water inside a water tank 36 flows out little by little through a valve hole. The water is diffused on the grinding surface of a grinding surface of a magnet 27 by the centrifugal force from the upper surface of the boss part 20. The grinding wheel 27 is slightly pressed downward, and a pressing piece slightly bends an elastic piece of the sheet slightly upward to receive the blade tip of a blade (such as a kitchen knife). The pressing piece is brought into contact with a thinned part of the lower side of the water tank 36, presses the upper surface of the blade to press the blade against the grinding surface.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a small blade polishing apparatus used for polishing kitchen knives and the like in general household kitchens.

[0002]

2. Description of the Related Art Known knife sharpeners include conventionally known small dry knife sharpeners for household use and general-purpose wet polishing devices for business use.

The dry, small household knife sharpener is easy to use, but is dry and is made of a relatively coarse ceramic to avoid clogging. Therefore, the cutting edge is easily scratched and a sharp blade is not formed. Further, there is a problem that the friction between the blade and the grindstone is severe, the temperature locally rises and the edge of the blade is annealed, and further, the polishing sound and vibration during polishing are large, which gives a fear.

On the other hand, the general-purpose wet polishing apparatus has a problem that it is inconvenient to handle because of its large size, and it takes a lot of space to store it and cleaning it after use is troublesome.

In general, it is a well-known fact that a knife such as a kitchen knife is excellent in that a sharp cutting edge is produced without damaging the cutting edge by wet-polishing with water on a grindstone.

[0006] However, the conventional small-sized knife sharpener for home use did not exist, but it is troublesome to handle and dispose of, and technical problems such as a complicated mechanism for waterproofing. It is thought that it was because of.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a simple blade polishing apparatus that solves these problems in a knife sharpener.

[0008]

In order to achieve the above object, the invention according to claim 1 is provided with a whetstone drive device and a water tank for supplying water to the polishing surface of the whetstone. In the blade polishing device, the above grindstone is formed into a disc shape,
This is fitted horizontally on a whetstone stand having a vertical axis of rotation, the whetstone stand is placed on the inner circumference of the opening of the water receiving container, and the water tank is connected to the water receiving container to attach it to the whetstone. The water tank is provided with a water supply device.

In the blade polishing apparatus having the above-mentioned structure, while the polishing surface of the grindstone is rotated in the horizontal plane by the driving device, water is supplied to the polishing surface by the water supply device and the blade such as a knife is grasped by hand. Wet polishing is performed by pressing the cutting edge against the polishing surface. The polishing liquid drops from the outer peripheral surface of the whetstone into the water receiving container.

According to a second aspect of the present invention, a blade receiving stand is provided on the periphery of the opening of the water receiving container, and a resilient blade pressing piece is provided on a part of a connecting member for connecting the water tank to the water receiving container. The pressing piece is provided on the lower surface of the water tank, and the whetstone base is biased upward.

In this case, the blade edge of the blade grasped by hand is placed on the blade support and the blade edge is inserted between the polishing surface and the guide piece. Then, the blade edge is elastically held between the grindstone and the pressing piece, and polishing is performed in this state.

According to a third aspect of the invention, the water receiving container, the water tank, the grindstone and the grindstone are combined in a disassembleable manner, and after the completion of polishing, these are disassembled for cleaning.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the blade polishing apparatus of the embodiment is provided with a drive unit 3 such as a dry battery 2 and a motor inside a main body casing 1. The gear 5 is attached to the pinion 4 of the drive unit 3.
To form a speed reduction mechanism. The main shaft 6 integrated with the gear 5 has bearings 7 at the upper and lower parts of the gear 5, respectively.
7 is vertically movably penetrated, and a spring 9 is pressed against the lower end of the spring 7 via a spring retainer 8 to urge the main shaft 6 upward. A joint 11 is attached to the upper end of the main shaft 6.

A water receiving container 13 is detachably attached to a recess 12 in the upper portion of the drive unit 3 of the main body casing 1.
A rotating shaft 14 penetrates through the central portion of the water receiving container 13, and a coupling 15 facing the joint 11 is attached to the lower end of the rotating shaft 14.

As shown in FIG. 4, the coupling 15 has a spiral guide groove 16 and an engaging step portion 17 on its inner peripheral surface, and guides the rib of the joint 11 by the spiral guide groove 16 to engage the rib. It is adapted to be engaged with the step portion 17.

The water receiving container 13 comprises a container body 10 and a lid 21. As shown in FIG. 2, a fitting portion 19 of the container body 10 is attached to and detached from a joint portion 18 provided on the side wall surface of the recess 12. Can be freely fitted and attached.

Further, as shown in FIG. 3, the upper end surface of the lid 21 of the water receiving container 13 serves as a tool rest 22 which descends from the right and left sides to the central portion at the same inclination angle.

On the upper end of the rotary shaft 14 is a grindstone support 2
3 is attached, and an engaging claw 24 provided around the grindstone base 23 is engaged with a recess 26 on the bottom surface of the grindstone mount 25 to removably mount the grindstone mount 25 to the grindstone mount 23. (See Figure 5). A boss portion 20 is provided in the center of the grindstone base 25, and a center hole 28 of a disk-shaped grindstone 27 is fitted around the boss portion 20 to attach the grindstone 27 to the grindstone base 2.
Fitted in 5.

The grindstone base 25 and the grindstone 27 fitted to the grindstone base 25 are, as shown in FIG. 1, an inner peripheral wall 29 of the lid 21.
It is arranged at the required interval inside the.

Mounting holes 31 are provided in two bottom portions of the blade receiving base 22 of the lid 21 facing each other, and connecting members 32 and 32 'are mounted in the mounting holes 31, respectively. Each connecting member 32, 32 ′ has a leg piece 33 that is inserted and engaged in the mounting hole 31, and guide portions 34 that extend along the surface of the blade receiving base 22 project from both sides of the leg piece 33. In addition, an opening 35 is provided on the upper end surface, and a leg 37 of the water tank 36 is provided.
Are accepted. Further, a locking claw 38 is provided inside the guide portion 34, and the locking claw 38 is locked in a recess 39 (see FIG. 6) on the bottom surface of the water tank 36, whereby the water tank 36 is connected to each connecting member. The water tank 36 is made to face the grindstone 27 by being engaged and integrated with 32 and 32 '.

Further, a pressing piece 42 is provided on the inner side of the locking claw 38 of the one connecting member 32 'via a thin elastic portion 41. As shown in FIG. 8, a part of the lower surface of the pressing piece 42 projects downward to form a pressing portion 43,
The pressing portion 43 is located on the lower surface of the water tank 36.
Further, a guide surface 45 inclined outward from the pressing portion 43 is formed. On the bottom surface of the water tank 36, a steal portion 46 is formed in a portion facing the pressing piece 42, and provides a margin for bending by the elastic portion 41 when the pressing piece 42 is pushed upward.

A water supply device 47 is provided at the center of the bottom surface of the water tank 36 (see FIG. 7). This device 47
A valve rod 49 is formed through a valve hole 48 provided at the center of the bottom surface of the water tank 36 so as to be vertically movable with a minute gap.
The valve body 51 is attached to the end of the water tank 36 on the side of the water tank 36, thereby closing the valve hole 48. The spherical portion 52 is provided at the lower end of the valve rod 49.
Is provided, and the spherical surface portion 52 is attached to the boss portion 20 of the grindstone base 25.
Is in contact with the center of.

In the above embodiment, the drive unit 3
Is driven by the dry battery 2, but it can be driven by a commercial power source.

When the driving device 3 is driven, the grindstone 25 and the grindstone 27 fitted to the grindstone 25 rotate through the main shaft 6 and the rotary shaft 14 and come into contact with the boss portion 20 of the grindstone 25. The valve body 51 vibrates due to the vibration of the valve rod 49, and the water in the water tank 36 gradually flows out through the valve hole 48.
Water is diffused from the upper surface of the boss portion 20 onto the polishing surface 44 of the grindstone 27 by centrifugal force.

A knife 53 such as a kitchen knife held in the hand (FIG. 8 (a))
(See reference) is inserted along the inclination of the tool rest 22, the upper surface of the tool 53 is guided by the guide portion 45 and comes into contact with the polishing surface 44.

At the same time, the grindstone 27 is pressed slightly downward (see the chain double-dashed line in FIG. 8C), and the pressing piece 42 is also pressed.
However, the elastic portion 41 of the thin plate bends slightly upward to receive the blade edge of the blade 53. The pressing piece 42 contacts the steal portion 46 on the lower surface of the water tank 36, presses the upper surface of the blade 53, and presses it against the polishing surface 44.

The polishing liquid generated by polishing falls from the outer peripheral surface of the grindstone 27 into the container body 10 through the gap between the grindstone 27 and the inner peripheral wall 29 of the lid 21. When polishing the opposite side of the blade 53, turn it over and turn the blade support 22 on the opposite side.
Insert from

After completion of polishing, both connecting members 32, 32 '
When the base of the leg piece 33 is pushed inward (see the white arrow in FIG. 7), the leg piece 33 comes off the lid 21, so that the water tank 36 can be separated together with the connecting members 33, 33 ′. The upper surface of the grindstone 27 can be cleaned.

Further, the container body 10 is disengaged from the joint portion 18 by pulling it upward, and the rotary shaft 14 is separated from the main shaft 6 at the coupling 15 thereof. Further lid 2
1 can be removed from the water receiving container 13, and the whetstone base 25 can also be removed from the whetstone receiving 23.

[0030]

According to the invention described in claim 1, since the grindstone has a disk shape and the polishing surface is rotated in a horizontal plane for polishing, the grindstone may be thin, and the polishing is sufficiently wide. The surface can be secured, and a compact wet polishing apparatus can be provided.

According to the second aspect of the present invention, since the blade can be pressed against the polishing surface with an appropriate force while maintaining a predetermined angle, a sharp finish can be obtained even by a person without special skill.

According to the third aspect of the invention, the container body and lid of the water receiving container, the water tank, the grindstone, and the grindstone can be easily disassembled and cleaned.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment.

FIG. 2 is a partially exploded perspective view of the above.

FIG. 3 is a partially exploded perspective view of the above.

FIG. 4 is an exploded perspective view of a coupling portion of the above.

FIG. 5 is an exploded perspective view of the whetstone cradle part of the above.

FIG. 6 is a perspective view of the above water tank.

FIG. 7 is an enlarged sectional view of the grindstone portion of the above.

8A is a plan view of the connecting member, FIG. 8B is a front view of the same, and FIG. 8C is a partial cross-sectional view of the same mounted state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body casing 2 Dry battery 3 Drive device 4 Pinion 5 Gear 6 Main shaft 7 Bearing 8 Spring retainer 9 Spring 10 Container body 11 Joint 12 Recess 13 Water receiving container 14 Rotating shaft 15 Coupling 16 Spiral guide groove 17 Engaging step portion 18 Joint Part 19 Fitting part 20 Boss part 21 Lid 22 Cutting tool rest 23 Grindstone base rest 24 Engaging claw 25 Grindstone mount 26 Recess 27 Grindstone 28 Center hole 29 Inner peripheral wall 31 Mounting hole 32, 32 'Connecting member 33 Leg piece 34 Guide Part 35 Opening 36 Water tank 37 Leg 38 Locking claw 39 Recess 41 Elastic part 42 Pressing piece 43 Pressing part 44 Polishing surface 45 Guide part 46 Stealing part 47 Water supply device 48 Valve hole 49 Valve rod 51 Valve body 52 Spherical part 53 Cutlery

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Etsuro Yamane 1-20-5 Tenma, Kita-ku, Osaka Zojirushi Mahobin Co., Ltd.

Claims (3)

[Claims] 1. A blade polishing apparatus comprising a whetstone driving device and a water tank for supplying water to the polishing surface of the whetstone, wherein the whetstone is formed into a disc shape and has a vertical axis of rotation. It is fitted horizontally on a table, the whetstone table is arranged on the inner circumference of the opening of the water receiving container, the water tank is connected to the water receiving container, and this is exposed on the whetstone. A blade polishing device, characterized in that it is provided with the above-mentioned supply device. 2. A blade receiving stand is provided on the periphery of the opening of the water receiving container, and an elastic blade pressing piece is provided on a part of a connecting member for connecting the water tank to the water receiving container. The blade polishing apparatus according to claim 1, wherein the tool polishing apparatus is positioned on a lower surface of the tank and biases the grindstone base upward. 3. The blade polishing apparatus according to claim 1, wherein the water receiving container, the water tank, the whetstone base, and the whetstone are disassembleably combined.