JPH0911096A - Kitchen knife sharpening machine - Google Patents

Abstract

PURPOSE: To lengthen the life of a kitchen knife even in the case where the grinding operation is repeated many times by performing the grinding operation in such a manner as to decrease the cutting amount of the knife root than that of the knife edge. CONSTITUTION: A kitchen knife support base 13 is disposed on the upper surface of a kitchen knife driving table 10 freely reciprocated parallel to the rotating surface of a grinding wheel 5, and an energizing spring, the energizing force of which is changed by a pressure control cylinder, is disposed to energize the kitchen knife support base 13 toward the grinding wheel 5. A kitchen knife support table 14 for holding a designated kitchen knife 20 is disposed on the kitchen knife support base 13 in such a manner as to be freely rotated in the horizontal direction by a rotation cylinder, and as the grinding position of the kitchen knife 20 is moved from the knife root to the knife edge, the energizing force of the energizing spring is increased. The cutting amount of the knife edge is increased by turning the kitchen knife support table 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a knife sharpener, and more particularly to a knife sharpener for automatically sharpening a knife.

[0002]

2. Description of the Related Art Conventionally, many kitchen knife sharpening machines have been used for automatically sharpening a kitchen knife.

In such a conventional knife sharpener,
A disc-shaped grindstone that is driven to rotate is provided, and a holding member that holds the knife at a predetermined angle and parallel to the grindstone is provided. Further, the holding member is provided to separate the knife from the grindstone. It is configured so that it can be moved forward in this state, and can be driven back along the surface of the grindstone while the knife is pressed against the grindstone.

In such a knife sharpening machine, the grindstone is rotatably driven and the holding member is reciprocated a plurality of times to grind the knife while pressing the knife against the grindstone at a constant pressure. It is like this.

[0005]

Generally, in the part of the blade base near the handle of the kitchen knife, if the height from the handle to the blade base is short, the fingers of the hand grip are cut by the blade base or cut by a cutting board. Since there is a problem that the grip is likely to hit the cutting board when working, it is necessary to secure a large height dimension from the handle to the blade base.

However, in the conventional knife sharpener, the knife is always positioned parallel to the grindstone, and
Since it is always pressed with a constant pressure, the blade of the knife will be scraped uniformly over the entire area, so the blade part of the knife will also be scraped as well as the cutting edge, and the sharpening operation will be repeated many times. There is a problem that the height dimension from the handle to the blade edge becomes small during repeated operation, and the life of the kitchen knife becomes extremely short.

Further, generally, the blade of the kitchen knife is formed in a curved shape, but in the above-mentioned conventional knife sharpening machine, the sharpening operation is performed while the knife is always positioned parallel to the grindstone. Therefore, there is also a problem that the blade is scraped in a straight line shape, and an appropriate sharpening operation cannot be performed along the curved line of the blade.

The present invention has been made in view of the above points, and reduces the cutting amount of the blade base relative to the blade tip, and
You can properly sharpen along the curve of the blade,
An object of the present invention is to provide a kitchen knife sharpening machine that can extend the life of the kitchen knife even when the polishing operation is repeated many times.

[0009]

In order to achieve the above-mentioned object, a knife sharpener according to the present invention has a disk-shaped grindstone rotatably arranged, and a knife drive table on the upper surface of the base. The knife supporting base is arranged on the upper surface of the knife driving base so as to be movable in the direction of moving toward and away from the grindstone, and at the same time, the knife supporting base is movable. An urging spring for urging the table in the direction of the grindstone is disposed, and the urging spring is extended at one end of the urging spring as the sharpening position of the knife moves from the blade edge to the blade edge. A pressure control cylinder for increasing the pressure contact force of the knife with respect to the grindstone by increasing the urging force of the knife, and the knife support base for holding the knife on the upper surface of the knife support base is the knife support base. It is arranged so that it can be rotated horizontally with respect to In which sharpening position of the knife is characterized by being arranged a rotational cylinder to rotational movement of said knife support table with respect to knife support base as it moves to the edge of the blade from.

[0010]

According to the knife sharpening machine of the present invention, the grindstone is driven to rotate at a predetermined speed, and the knife held by the knife support is positioned in front of the grindstone by the biasing force of the biasing spring. The knife driving table is moved in the direction of the grindstone, the knife held by the knife holder is pressed against the grindstone with a predetermined pressure, and the sharpening operation by the grindstone is started. afterwards,
By moving the knife driving base, the knife is moved while abutting on the grindstone, and the sharpening operation is performed over the entire area of the blade of the knife.

In this case, the urging force of the urging spring is extended by operating the pressure control cylinder to extend the urging spring as the knife driving table moves and the sharpening position of the knife moves to the cutting edge. Is gradually increased to increase the pressure contact force of the kitchen knife with respect to the grindstone, and the rotation cylinder is gradually retracted to rotate the kitchen knife support base with respect to the kitchen knife support base.
As the sharpening position of the knife moves to the cutting edge, the knife is pressed against the grindstone with a strong force, and the holding angle of the knife is inclined with respect to the grindstone.
As a result, a large amount of the blade tip is scraped with respect to the blade base of the kitchen knife, the height of the blade base can be ensured, and when the blade of the knife is curved, this The blade of a kitchen knife can be sharpened properly along a curved line.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

1 to 4 show an embodiment of a kitchen knife sharpener according to the present invention. A bearing base 2 is disposed on one side of an upper surface of a predetermined base 1, and this bearing is used. A bearing member 4 that rotatably supports the grindstone rotating shaft 3 is disposed on the upper surface of the base 2. A disk-shaped grindstone 5 is attached to one end of the grindstone rotating shaft 3, and a grindstone rotating pulley 6 is attached to the other end of the grindstone rotating shaft 3. Also,
A grindstone rotating motor 7 is disposed on the upper surface of the base 1 and below the bearing stand 2, and a grindstone driving pulley 8 is fixed to an output shaft of the grindstone rotating motor 7. . A grindstone rotating belt 9 is stretched between the grindstone rotating pulley 6 and the grindstone driving pulley 8. By rotating the grindstone rotating motor 7 to rotate the grindstone driving pulley 8, the grindstone is rotated. The grindstone rotating pulley 6 is rotated via the rotating belt 9 to rotate the grindstone 5 at a predetermined speed.

A knife driving base 10 is arranged on the upper surface of the base 1, and a drive holding plate 11 extending upward is provided upright on the front and rear edges of the kitchen knife driving base 10. There is.
The guide shaft 12 is provided between the drive holding plates 11.
Is provided, and a knife support base 13 is movably mounted on the guide shaft 12 along the guide shaft 12.

On the upper surface of the kitchen knife support base 13, a kitchen knife support base 14 with both sides thereof erected is disposed so as to be rotatable in the horizontal direction with respect to the kitchen knife support base 13. Between the support bases 14, a knife support member 16 having a support plate 15 arranged in the center is disposed so as to be inclined with respect to the knife support base 14. A knife holding plate 17 is attached to the tip of the support plate 15, and a clamping cylinder 18 is attached to the support plate 15. A knife nipping plate 19 located in front of the knife holding plate 17 is attached to the tip of the nipping cylinder 18, and the knife nipping plate 1 is operated by operating the nipping cylinder 18.
9 is moved back and forth to move the knife holding plate 17 and the knife holding plate 1.
A predetermined kitchen knife 20 is sandwiched between 9 and.

Further, one end of a contact / separation drive cylinder 21 is connected to the drive holding plate 11 on the rear side of the knife drive base 10, and the other end of the contact / separation drive cylinder 21 is
It is connected to the knife support base 13. By operating the contact / separation drive cylinder 21, the knife support base 13 can be driven along the guide shaft 12.

Further, as shown in FIG. 5, a pressure control cylinder 22 is attached to a rear portion of one side of the kitchen knife support base 13, and a biasing spring 23 is attached to a tip portion of the pressure control cylinder 22. One end of is connected. The other end of the urging spring 23 is connected to the drive holding plate 11 on the front side of the knife driving base 10, and the urging force of the urging spring 23 is the operating force of the contact / separation drive cylinder 21. It is set smaller. Then, the contact / separation drive cylinder 2
In the state in which 1 is opened, the knife supporting base 13 is moved by the urging force of the urging spring 23 in the direction of the drive holding plate 11 in front of the knife driving base 10 and held by the knife holding plate 17. Is pressed against the grindstone 5 at a predetermined pressure. By activating the pressure control cylinder 22 and extending the urging spring 23, the urging spring 23 is pressed.
The urging force of the knife 20 increases, and the pressure contact force of the kitchen knife 20 with respect to the grindstone 5 can be increased.

A rotating cylinder 24 is disposed above the contact / separation drive cylinder 21 of the knife supporting base 13, and the knife supporting base 14 is provided at the tip of the rotating cylinder 24. The side portions of are connected. And
By the operation of the rotating cylinder 24, the kitchen knife support base 14 is rotated with respect to the kitchen knife support base 13.

Further, below the knife driving base 10,
A ball screw 25 and a slide bar 26, which extend parallel to the rotation surface of the grindstone 5, are provided respectively, and the ball screw 2 is provided on the lower surface of the knife driving table 10.
Drive plate 27 to which 5 is screwed and the slide bar 26
The guide plates 28 into which are inserted are formed to project. A moving pulley 29 is attached to one end of the ball screw 25, and a moving motor 30 is arranged on the lower surface side of the base 1. A moving output pulley 31 is attached to the output shaft of the moving motor 30, and a moving belt 32 is stretched between the moving output pulley 31 and the moving pulley 29. Then, by rotating the moving motor 30, the ball screw 25 is rotated through the moving output pulley 31, the moving belt 32, and the moving pulley 29, respectively. It is configured to be able to reciprocate along the upper surface of 1.

As shown in FIG. 4, a positioning base 33 is attached to the upper surface of the base 1, and a positioning plate 34 is rotatably attached to the tip of the positioning base 33. Installed. When the positioning plate 34 is used, the positioning plate 34 is rotated upward so that the front end surface has a predetermined gap with respect to the nipping positions of the kitchen knife holding plate 17 and the kitchen knife holding plate 19, and the knife 20 is sharpened. It is sometimes rotated downward so that it can be retracted so as not to interfere with the sharpening operation.

Further, a knife 20 is provided on the upper surface of the base 1.
A ruler 35 is installed to measure the length dimension of the.

Next, the operation of this embodiment will be described.

First, the positioning plate 34 is rotated upward so that the front end surface of the positioning plate 34 is held by the kitchen knife holding plate 17 and the kitchen knife holding plate 19.
It is positioned so as to have a predetermined gap with respect to the sandwiching position of. Subsequently, a predetermined knife 20 is inserted between the knife holding plate 17 and the knife holding plate 19, and the blade portion is brought into contact with the tip end surface of the positioning plate 34, in this state,
Knife clamping plate 1 by retracting the clamping cylinder 18
By moving the knife 9, the knife 20 is clamped between the knife holding plate 17 and the knife clamping plate 19. Then, the positioning plate 34 is rotated downward and retracted.

Next, by rotating the grindstone rotating motor 7 and rotating the grindstone driving pulley 8, the grindstone rotating pulley 6 is rotated through the grindstone rotating belt 9, and the grindstone 5 is rotated at a predetermined speed. Drive it.

In this state, the moving motor 30 is driven to rotate, and the ball screw 25 is moved through the moving output pulley 31, the moving belt 32, and the moving pulley 29, respectively.
The knife driving base 10 is moved to the left in FIG. 1 by rotating the knife to position the knife 20 in front of the grindstone 5.

By opening the contact / separation drive cylinder 21, the kitchen knife support base 13 is driven by the urging force of the urging spring 23 so that the knife holding base 13 is in front of the kitchen knife drive table 10 along the guide shaft. 11, the knife 20 held by the knife holding plate 17 is pressed against the grindstone 5 with a predetermined pressure, and the sharpening operation by the grindstone 5 is started.

Thereafter, the moving motor 30 is rotationally driven in the reverse direction and the ball screw 25 is rotationally driven in the reverse direction to move the knife driving base 10 in the right direction in FIG. Kitchen knife 20 is a whetstone 5
The knife 20 is moved while coming into contact with the blade, and the sharpening operation is performed over the entire area of the blade of the knife 20.

In this case, in this embodiment, as the knife driving table 10 moves, the pressure control cylinder 22 is retracted to extend the urging spring 23, so that the urging spring 23 moves. The urging force is gradually increased, and as the sharpening position of the knife 20 moves to the cutting edge, the pressing force of the knife 20 against the grindstone 5 is increased. On the other hand, as the sharpening position of the kitchen knife 20 moves to the cutting edge, the rotation cylinder 24 is gradually pulled in, whereby the kitchen knife support 1
4 is rotated with respect to the knife support base 13. That is, as the sharpening position of the knife 20 moves to the cutting edge, the knife 20 is pressed against the grindstone 5 with a strong force, and the holding angle of the knife 20 is inclined with respect to the grindstone 5. There is.

Therefore, as shown in FIG. 6, a large amount of the cutting edge portion is scraped with respect to the cutting edge portion of the kitchen knife 20, and even when the sharpening operation is repeated, the height from the handle of the kitchen knife 20 to the blade edge is increased. The size can be secured.

At this time, the rotating operation of the knife supporting base 14 is continuously performed, for example, by 1 to 2 ° each.
As a result, as the knife 20 moves to the cutting edge,
The blade portion can be cut into a smooth arc shape, and when the knife blade has a curved shape, the knife blade can be properly sharpened along this curve.

By repeating the above operation a plurality of times, the sharpening operation of the knife 20 is completed.

Therefore, in this embodiment, as the sharpening position of the knife 20 moves to the cutting edge, the knife 20 is pressed against the grindstone 5 with a strong force, and the holding angle of the knife 20 is fixed to the grindstone 5. It is designed to be inclined with respect to the blade, so that the blade tip portion of the knife 20 can be shaved more than the blade base portion, and the blade can be sharpened properly along a curved blade. Therefore, even when the sharpening operation is repeatedly performed, the height dimension from the handle of the kitchen knife 20 to the blade edge can be secured, an appropriate sharpening operation can be performed, and the life of the kitchen knife 20 can be remarkably extended. .

The present invention is not limited to the above-mentioned embodiment, but various modifications can be made as necessary.

[0034]

As described above, the knife sharpening machine according to the present invention is capable of sharpening the blade edge portion with respect to the blade edge portion of the kitchen knife and performing the sharpening operation properly along the curved line of the blade. Therefore, even when the sharpening operation is repeated, the height dimension from the handle of the kitchen knife to the blade edge can be secured, the proper sharpening operation can be performed, and the life of the kitchen knife can be remarkably extended. There is an effect such as being able to.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a knife sharpener according to the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is an enlarged view of the knife supporting base portion of FIG. 1.

FIG. 4 is an enlarged view of the knife supporting base portion of FIG.

FIG. 5 is a plan view of a part of the knife supporting base of the present invention.

FIG. 6 is an explanatory view showing a scraped state of the kitchen knife according to the present invention.

[Explanation of symbols]

 1 base 5 grindstone 7 grindstone rotation motor 10 kitchen knife drive 11 kitchen knife drive plate 13 kitchen knife support base 14 kitchen knife support 17 kitchen knife holding plate 18 kitchen clamping cylinder 19 kitchen knife clamping board 20 kitchen knife 21 separation drive cylinder 22 pressure control cylinder 23 Biasing Spring 24 Rotating Cylinder 30 Moving Motor

Claims (1)

[Claims] 1. A disk-shaped grindstone is rotatably arranged,
A knife driving base is arranged on the upper surface of the base so as to be capable of reciprocating in parallel to the rotation surface of the grindstone, and a knife supporting base is provided on the upper surface of the knife driving base in a direction to move toward and away from the grindstone. In addition to being movably arranged, an urging spring for urging this kitchen knife support base in the direction of the grindstone is arranged, and at one end of this urging spring, the sharpening position of the kitchen knife moves from the blade edge to the cutting edge. Therefore, a pressure control cylinder for increasing the pressure contact force of the kitchen knife to the grindstone by extending the urging spring to increase the urging force of the urging spring is provided. A knife support base for holding the knife support base is rotatably arranged in the horizontal direction with respect to the knife support base, and the knife support base moves the knife support base as the sharpening position of the knife moves from the blade edge to the blade edge. Rotating sill for rotating the table Knife sharpening machine being characterized in that disposed Da.