KR100692261B1 - Auto knife sharpener - Google Patents

Abstract

An automatic knife sharpener is provided to maintain the performance of a knife blade by making the acute polishing angle of the knife blade acute with a wide polishing area. An automatic knife sharpener includes a body(10), a motor, a power source unit, a first rotary plate(13), a second rotary plate(14), a first polishing disc(15), a second polishing disc(16), and a partially pressing unit. The first and second polishing discs face each other so that a knife blade is inserted between the first and second polishing discs. The first polishing disc and the second polishing disc are installed loosely so that the first and second polishing discs move with respect to the first and second rotary plates. Semi-spherical bosses are formed in the first and second polishing discs. Spherical recesses corresponding to the semi-spherical bosses are formed in the first and second rotary plates.

Description

Auto knife sharpener

1 is a perspective view showing a closed state of the lid of the automatic knife device according to an embodiment of the present invention.

Figure 2 is a perspective view showing a state in which the lid of the automatic knife sharpener of Figure 1 open.

3 is an exploded perspective view of parts showing a state in which the main body and the lid of FIG. 1 are removed.

4 is a front view of FIG. 3.

5 is a state diagram used in FIG.

FIG. 6 is a cross-sectional view showing a partial pressing state of the first polishing disc and the second polishing disc of FIG. 3.

FIG. 7 is a view showing a perspective view, a front view, and a side view of the first polishing disc (second polishing disc) according to the preferred embodiment of FIG. 3 in sequence.

8 is a view showing a perspective view, a front view, and a side view of a first polishing disk (second polishing disk) according to another preferred embodiment of FIG. 3 in sequence.

FIG. 9 is an exploded perspective view of parts showing the first polishing disc (second polishing disc) and the first rotating plate (second rotating plate) of FIG. 3.

10 is a cross-sectional view of the first press roller (second press roller) of FIG.

FIG. 11 is an external perspective view illustrating the lid of FIG. 1. FIG.

12 is a perspective view illustrating the blade support of FIG. 6.

(Description of Major Symbols in the Drawing)

1: blade 10: main body

11: motor 12: power supply

13: first tumbler 14: second tumbler

15: first abrasive disc 16: second abrasive disc

17: partial pressure device 171: first pressure roller

172: second pressure roller 173: inclined surface

174: metal rotating shaft 175: elastic layer

176: resin layer 18: rotational safety switch

19: indirect safety switch 20: lid

20a: blade inlet 21: axis of rotation

22: elastic steel plate 23: sandpaper

24: diamond abrasive stone 25: hemispherical protrusion

26: hemispherical groove 27: hinge shaft

28: rotating table 29: elastic spring

30: blade type selection lever 31: multi-stage groove

32: sealing film 34: waterproof packing

35: Waterway Groove 36: Blade Support

37: blade groove 38: metal layer

39: leaf spring

The present invention relates to an automatic knife sharpening device, and more particularly, two elastic abrasive discs face each other instead of abrasive stones or polishing rods, and partially pressurized to increase the adhesion of the blades, and simultaneously with the grinding of the blades, using water and detergent. The present invention relates to an automatic knife sharpening device capable of dissolving grease on the surface of a blade.

In general, when the blade becomes dull in a home or a business, in order to sharpen the blade further, conventionally, the abrasive stone is rotated at a high speed by a motor, and the operator manually polishes the blade by contacting the blade with the abrasive stone.

Alternatively, the blade was polished by contacting the blade with a polishing rod, a grinding wheel, or the like having a fine cutting groove formed on the surface thereof without using a motor.

However, these conventional blade grinding methods, firstly, the abrasive stone or abrasive rod is a hard material, and the blade is also a hard material, so only the tip of the blade contacted with the abrasive stone or abrasive rod is sharpened over time. Because the blade does not return to the sharp state of the first time, the performance of the knife is deteriorated with time, and the knife only polished at the end of the blade has a problem that it is easy to wear and polish too often.

In addition, second, the conventional blade grinding method, the weight of the reverse grinding stone or polishing rod is heavy, the manufacturing method is cumbersome, there is a problem that the equipment is enlarged or the unit cost of the product and parts are increased.

In addition, third, the conventional blade grinding method, the oil is attached to the abrasive stone and the polishing rod to interfere with the polishing, as well as the polishing efficiency of the abrasive stone and the polishing rod takes a lot of polishing time, the precision and sharpness of the blade There was a problem such as falling.

An object of the present invention for solving the above problems is to press the two abrasive disks of the elastic material that rotates at high speed in the "V" shape to sharpen the cutting angle of the blade and widen the polishing area to improve the performance of the blade It is to provide an automatic knife sharpening device that can always be improved to the best state, and maintains the performance of the blade even if the angle of the polished blade as a whole is sharp and not frequently polished.

In addition, another object of the present invention, the weight of the polishing disk, easy to manufacture, easy to replace it is possible to simplify and minimize the equipment, the automatic knife sharpening device that can greatly reduce the unit cost of products and parts In providing.

In addition, another object of the present invention is to be able to use water and detergent at the same time during polishing to help polishing by removing oil, to improve polishing efficiency to shorten the polishing time, improve the precision and sharpness of the blade Automatic knife sharpening device is provided.

Automatic knife grinding device of the present invention for achieving the above object, in configuring an automatic knife grinding device,

Axis of rotation

A first rotating plate and a second rotating plate rotated together with the rotating shaft,

A first abrasive disc and a second abrasive disc which are loosely installed on the first rotary plate and the second rotary plate so as to allow flow, the abrasive material is installed on the surface thereof, and is installed to face each other so that the blade can be inserted therebetween; and

And a partial pressing means for pressing one side of the first and second polishing disks so that the first polishing disk and the second polishing disk can be rotated by interposing a blade therebetween.

In the present invention, the rotating shaft is rotatable by a mechanical or electrical force, in a preferred embodiment of the invention is rotated by an electrically operated motor.

The present invention in one aspect, the automatic knife device of the present invention in the configuration of the automatic knife device that can grind the blade using a motor, the main body; A motor installed in the main body and generating rotational power; A power supply unit for applying power to the motor; A first rotating plate and a second rotating plate which are detachably installed with the rotating shaft of the motor and rotated together with the rotating shaft; A first abrasive disc and a second abrasive disc which are loosely installed on the first rotary plate and the second rotary plate so as to allow flow, and an abrasive material is installed on a surface thereof, and which is installed to face each other so that blades can be inserted therebetween; And partial pressing means for pressing one side of the first and second abrasive disks so that the first abrasive disk and the second abrasive disk are rotated by being engaged in a "V" shape when viewed from above with the blades interposed therebetween. Characterized in that comprises a.

According to the present invention, hemispherical protrusions are formed on the first and second abrasive discs, respectively, so that the first and second abrasive discs may be loosely installed to allow the first and second rotary discs to flow. Hemispherical grooves corresponding to the hemispherical protrusions may be formed in the first rotating plate and the second rotating plate, respectively.

Further, according to the present invention, the partial pressing means, the rotation is freely installed on the pivot table hinged by the hinge shaft provided in the main body, the first polishing by the elastic spring installed between the main body and the pivot table A first press roller elastically pressurized in the disc direction; And a second pressing roller installed on the lid of the main body and closing the lid of the main body to press the second polishing disk together with the first pressing roller.

In addition, according to the present invention, the lid of the main body is hinged to the main body, a sealing film is installed in the blade inlet, a locking device is installed between the main body and the lid, the waterproof packing is installed between the main body and the lid In the main body, a waterway groove may be formed outside the blade inlet.

In addition, according to the present invention, a blade support freely rotated may be provided between the first abrasive disc and the second abrasive disc.

In addition, the automatic knife sharpening device of the present invention is automatically rotated when the blade is pulled in, and connected to the power supply so as to automatically stop when the blade is pulled out, the rotary safety switch is hinged to the lower side of the blade inlet of the main body installed horizontally ; And an indirect safety switch hinged to the side of the blade inlet of the main body so that the user can operate by hand.

In another aspect, the abrasive disk according to the present invention has a hole through which the rotating shaft penetrates in the center, a plurality of spherical protrusions that can be fitted to the rotating plate is formed on one side and the other side is an automatic knife grinding For grinding discs.

Meanwhile, according to the present invention, it is preferable that the first abrasive disc and the second abrasive disc are formed by attaching diamond abrasive stone or sandpaper to a thin elastic steel sheet.

Specific features and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings.

That is, the automatic knife sharpening apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First, as shown in Figures 1 to 4, the automatic knife device according to a preferred embodiment of the present invention, the main body 10, the motor 11, the power supply device 12, and the first time Front plate 13 and second rotating plate 14, first polishing disk 15 and second polishing disk 16, partial pressurizing device 17, rotation safety switch 18 and indirect safety switch 19 ).

Here, the main body 10, the lid 20 is hinged to one side is installed, and serves as a kind of case to cover and protect the motor (11).

In addition, the motor 11 is installed in the main body 10 to receive the power from the power supply device 12 to generate rotational power.

In addition, the power supply device 12 applies power to the motor 11 in response to the rotation safety switch 18 and the indirect safety switch 19.

In addition, the first rotating plate 13 and the second rotating plate 14 are detachably installed with the rotating shaft 21 of the motor 11 to rotate together with the rotating shaft 21.

In addition, the first abrasive disc 15 and the second abrasive disc 16 are loosely installed to allow flow to the first rotary plate 13 and the second rotary plate 14, and an abrasive material is installed on the surface thereof. , So that the blade (1) between them is installed facing each other to be inserted.

Here, the first polishing disk 15 and the second polishing disk 16, as shown in Figure 7, is made by attaching several pieces of sandpaper 23 to the thin elastic steel sheet 22, or Figure 8 As shown in FIG. 2, the diamond abrasive stone 24 may be formed by coating the thin elastic steel plate 22.

In addition, as shown in FIG. 9, in order for the first polishing disk 15 and the second polishing disk 16 to be loosely installed to allow flow with the first rotating plate 13 and the second rotating plate 14. A plurality of hemispherical protrusions 25 are formed on the first abrasive disc 15 and the second abrasive disc 16, respectively, and the hemispherical protrusions 25 are formed on the first and second rotating plates 13 and 14. A plurality of hemispherical grooves 26 corresponding to are formed.

In addition, the partial pressing device 17, as shown in Figure 4 and 6, when the first polishing disk 15 and the second polishing disk 16 is cut down from above with the blade (1) in between As a kind of partial pressing means for pressing one side of the first polishing disk 15 and the second polishing disk 16 so as to rotate in engagement with the "V" shape, such a partial pressing device 17, FIG. And a first pressure roller 171 shown in FIG. 4 and a second pressure roller 172 shown in FIGS. 2 and 6.

That is, as shown in FIGS. 3 and 4, the first press roller 171 is freely rotatably installed on the pivot table 28 hinged by the hinge shaft 27 installed in the main body 10. It is to be elastically pressurized in the direction of the first polishing disk 15 by the elastic spring 29 provided between the main body and the pivot table 28.

In addition, as shown in FIG. 2, the second press roller 172 is installed in the lid 20 of the main body 10, and the first pressurization is performed when the lid 20 of the main body 10 is closed. The second polishing disk 16 is pressed together with the roller 171.

Here, the first press roller 171 and the second press roller 172, as shown in Figure 6 and 10, the first polishing disk 15 and the second polishing disk 16 in contact with each other. As the first rotary disk 15 and the second polishing disk 16 are rotated to form an angle in the form of "V", the inclined surface 173 is formed, the metal rotating shaft 174 and the synthetic resin layer 176 The elastic layer 175 of an elastic material such as rubber, urethane or silicone is formed on the outside.

Accordingly, as shown in FIGS. 5 and 6, when the lid 20 of the main body 10 is closed, the first pressing roller 171 and the second pressing roller 172 are connected to the first polishing disk 15. ) And only a portion of the second abrasive disc 16 is partially pressurized and viewed from above, the first abrasive disc 15 and the second abrasive disc 16 are elastically bent to form a "V" character. The blade 1 can be cut sharply as a whole by maximizing the contact area of the blade 1 between the first and second abrasive disks 15 and 16. At this time, the first abrasive disk 15 and The hemispherical protrusion 25 of the second abrasive disk 16 is loosely bitten by the hemispherical grooves 26 of the first and second rotating plates 13 and 14 to transmit the rotational power of the motor 11 and at the same time. It is possible to flow to maintain the rotation of the "V" shape of the first polishing disk 15 and the second polishing disk 16.

On the other hand, as shown in Figure 2 and 4, the blade shape selection lever 30 for advancing the first pressing roller 171 forward and backward so as to be caught in the multi-stage groove 31 installed in the main body 10. The first pressure roller 171 may be selectively pressurized by dividing the single-sided blades and the double-sided blades according to types.

Here, as shown in FIG. 3, a leaf spring 39 for pressing the first pressure roller 171 in a direction of reversing the first pressure roller 171 may be installed.

In addition, as shown in Figures 1 and 5, the lid 20 of the main body 10 is hinged to the main body 10, the sealing film 32 is installed in the blade inlet (20a), A locking device 33 is installed between the main body 10 and the lid 20, and as shown in FIG. 2, a waterproof packing 34 is installed between the main body 10 and the lid 20. As illustrated in FIG. 11, a waterway groove 35 may be formed outside the blade inlet 20a.

When the wash water is filled so that the disk is partially locked to the lower part of the lid of the main body, it is possible to remove fat components at the same time as polishing, so that even if water and detergent are added together when the blade 1 is polished, It is possible to clean the blade by not flowing to the outside, and to remove the fat components that hinder polishing.

On the other hand, as shown in Figure 6 and 12, between the first polishing disk 15 and the second polishing disk 16 is provided with a blade support 36 freely rotated so that the blade when the blade is polished the motor 11 It is preferable not to collide with the rotating shaft of the).

Here, as shown in FIG. 12, the blade support 36 includes a metal layer 38 having a blade groove 37 contacting the blade 1 on the outside thereof.

On the other hand, the rotational safety switch 18 described above, as shown in Figures 1 and 2, is automatically driven when the blade (1) is drawn in, the power supply device to stop automatically when the blade (1) withdrawal ( 12) is hinged to the lower blade inlet (20a) of the main body 10 is installed horizontally.

In addition, the above-described indirect safety switch 19 is hinged to the side of the blade inlet 20a of the main body 10 so that the operator can operate by hand, as shown in Figs. It is installed.

Therefore, as shown in FIG. 5, the operator advances the blade shape selection lever 30 to fix the multi-stage groove 31 and fixes the double-sided blade 1 to the blade inlet 20a of the lid 20. When the rotary safety switch 18 is inserted into the end of the furnace, the rotational safety switch 18 is rotated by the blade 1, and the power is applied to the motor 11 only when the operator rotates the indirect safety switch 19 by hand. The disk 15 and the second polishing disk 16 are partially pressurized with each other to be in contact with the blade 1 in the form of "V" to rotate at a high speed to polish a large area of the blade 1.

At this time, the blade 1 does not collide with the rotating shaft 21 of the motor 11 by the blade support 36 provided between the first and second polishing disks 15 and 16. , Only the blade (1) can be polished.

On the other hand, if the operator retracts the blade shape selection lever 30 and fixed to the multi-stage groove 31, the first pressing roller 171 is reversed, so that the first polishing disk 15 cannot be pressed. Only the second polishing disk 16 polishes the blade 1 so that the cross section blade can be polished.

The present invention is not limited to the above-described embodiments, and of course, modifications may be made by those skilled in the art without departing from the spirit of the present invention.

Therefore, the scope of the claims in the present invention will not be defined within the scope of the detailed description, but will be defined by the following claims and their technical spirit.

As described above, according to the automatic sharpening device of the present invention, the sharp cutting angle of the cutting edge and the wide grinding area can always improve the performance of the cutting edge. The performance of the blade can be maintained as it is, the weight of the grinding disc is light, easy to manufacture, and easy to replace, which simplifies and minimizes the equipment, and greatly reduces the cost of products and parts. Detergent can be used at the same time to remove the oil to help polishing, improve the polishing efficiency to shorten the polishing time, has the effect of improving the precision and sharpness of the blade.

Claims (10)

In constructing an automatic knife sharpening device that can cut a blade using a motor, Main body 10; A motor (11) installed in the main body (10) for generating rotational power; A power supply device 12 for applying power to the motor; A first rotating plate (13) and a second rotating plate (14) rotatably installed with the rotating shaft of the motor and rotated together with the rotating shaft; The first and second polishing disks 15 and 2 are loosely installed on the first rotating plate and the second rotating plate so as to be able to flow, and an abrasive material is installed on the surface, and facing each other so that blades can be inserted therebetween. Disk 16; And Partial pressing means for partially pressing one side of the first and second abrasive discs so that the first abrasive disc and the second abrasive disc can be rotated by being engaged in a "V" shape when viewed from above with the blade interposed therebetween ( 17), including A hemispherical protrusion 25 is formed on the first and second polishing disks so that the first and second polishing disks 15 and 16 are loosely installed so as to flow with the first and second rotating disks. Are each formed, and the first and second rotary plates, hemispherical grooves corresponding to the hemispherical protrusions (26), respectively, characterized in that the automatic knife grinding device. delete The method of claim 1, The partial pressing means 17, Rotation is freely installed on the pivot table hinged by the hinge shaft 27 installed on the main body 10, the elastic spring 29 is installed between the main body and the pivot table to be elastic in the direction of the first abrasive disk A first pressurized roller 171 to be pressurized; And A second press roller 172 installed on a lid of the main body and pressurizing the second abrasive disc together with the first press roller when the lid of the main body is closed; Automatic knife sharpening device comprising a. The method of claim 3, A blade shape selection lever 30 for advancing the first pressure roller back and forth to selectively press the first pressure roller by separating the single-sided blade and the double-sided blade is caught in the multi-stage groove 31 installed in the main body. Automatic knife sharpening device, characterized in that installed so that. The method of claim 3, The lid 20 of the main body is hinged to the main body, a sealing film 32 is installed in the blade inlet 20a, a locking device 33 is installed between the main body and the lid, between the main body and the lid Waterproof packing 34 is installed on the automatic knife device, characterized in that the waterway groove 35 is formed on the outside of the blade inlet. The method of claim 1, Automatic knife grinding device, characterized in that the blade support (36) is provided between the first and second grinding disks free rotation. The method of claim 1, A rotary safety switch 18 connected to the power supply device so as to be automatically driven when the blade is pulled in, and automatically stopped when the blade is pulled out, and hinged to the lower side of the blade inlet of the main body and installed horizontally; And An indirect safety switch (19) hinged to the side of the blade inlet of the main body so that the user can operate by hand; Automatic knife sharpening device, characterized in that further comprises. The method of claim 1, The first abrasive disc and the second abrasive disc is an automatic knife device, characterized in that by attaching a diamond abrasive stone (24) or sandpaper (23) to a thin elastic steel sheet. A rotating shaft 21; A first rotating plate 13 and a second rotating plate 14 which rotate together with the rotating shaft; The first and second polishing disks 15 and 2 are loosely installed on the first rotating plate and the second rotating plate so as to be able to flow, and an abrasive material is installed on the surface, and facing each other so that blades can be inserted therebetween. Disk 16; And Partial pressing means for partially pressing one side of the first and second abrasive discs so that the first abrasive disc and the second abrasive disc can be rotated by being engaged in a "V" shape when viewed from above with the blade interposed therebetween ( 17), including A hemispherical protrusion 25 is formed on the first and second polishing disks so that the first and second polishing disks 15 and 16 are loosely installed so as to flow with the first and second rotating disks. Are each formed, and the first and second rotary plates, hemispherical grooves corresponding to the hemispherical protrusions (26), respectively, characterized in that the automatic knife grinding device. delete

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