CN216371375U

CN216371375U - Automatic knife sharpener

Info

Publication number: CN216371375U
Application number: CN202121983891.9U
Authority: CN
Inventors: 李武建
Original assignee: Yuyao Norton Electric Co ltd
Current assignee: Yuyao Norton Electric Co ltd
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-04-26
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses an automatic knife sharpener, aiming at providing an automatic knife sharpener with simple structure, reliability and high advanced degree, comprising a knife holder, a knife sharpening mechanism and a driving mechanism, wherein the knife holder is used for clamping a cutter; the driving mechanism comprises a first motor, a screw rod and a screw rod bearing, the first motor is connected with the screw rod, the screw rod bearing is matched with the screw rod, and the knife sharpening mechanism is connected with the screw rod bearing to enable the knife sharpening mechanism to float by taking the screw rod as a center; the first motor rotates to drive the sharpening mechanism to move along the length direction of the cutting edge in a reciprocating manner, the sharpening mechanism comprises a sharpening part, and the sharpening mechanism arranged in a floating manner drives the sharpening part to always have the trend of being tightly attached to one side surface of the cutting edge; the utility model relates to the technical field of knife sharpeners.

Description

Automatic knife sharpener

Technical Field

The utility model relates to the technical field of knife sharpeners, in particular to an automatic knife sharpener.

Background

The existing small household electric knife sharpener generally comprises a shell, a motor, a knife sharpening assembly and an electric control module, wherein the shell is provided with a knife sharpening assembly mounting area, and the knife sharpening assembly comprises a knife sharpening part and a driving mechanism for driving the knife sharpening part to move linearly and reciprocally. In order to meet the requirement of sharpening, two sharpening parts are generally arranged and are arranged in a staggered structure, and a gap formed between the two sharpening parts is matched with two side surfaces of the blade to sharpen the blade when the sharpening parts move in a reciprocating and linear manner; two sharpen portions are comparatively complicated in structure, and advanced degree is low, and when handling irregular cutting edge, the portion of whetting a knife leads to the effect of whetting a knife poorly with the cutting edge contact, can't satisfy the user demand.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the automatic knife sharpener has simple structure, reliability and high advanced degree.

In order to achieve the purpose, the utility model provides the following technical scheme: an automatic knife sharpener comprises a knife holder, a knife sharpening mechanism and a driving mechanism, wherein the knife holder is used for clamping a knife;

the driving mechanism comprises a first motor, a screw rod and a screw rod bearing, the first motor is connected with the screw rod, the screw rod bearing is matched with the screw rod, and the knife sharpening mechanism is connected with the screw rod bearing to enable the knife sharpening mechanism to float by taking the screw rod as a center;

the first motor rotates to drive the sharpening mechanism to move in a reciprocating mode along the length direction of the cutting edge, the sharpening mechanism comprises a sharpening portion, and the sharpening mechanism arranged in a floating mode drives the sharpening portion to always have a side trend of being tightly attached to the cutting edge.

After adopting the structure, compared with the prior art, the automatic sharpener disclosed by the utility model has the following advantages: the sharpening mechanism is connected with the screw rod bearing, the sharpening mechanism can rotate within a certain range by taking the screw rod as a circle center, and then the sharpening position of the sharpening mechanism floats, the sharpening part always has the trend of being tightly attached to one side surface of the cutting edge in the process of driving the sharpening mechanism to reciprocate, so that the sharpening part has good sharpening effect on the cutting edge with inclination and irregularity, and the device has strong applicability and can polish various cutters; in addition, the device also has the characteristics of simple and reliable structure and high advanced degree.

As an improvement of the utility model, the sharpening mechanism further comprises a bracket and a second motor, the bracket is connected with the screw shaft bearing, the second motor is arranged on the bracket, the second motor is connected with the sharpening part to drive the sharpening part to rotate, and the bracket and the screw shaft are arranged in a staggered angle. Above-mentioned design, the simple structure of mechanism of whetting a knife, occupation space is little, does benefit to the miniaturized design of device, and the device operation is reliable, long service life.

As an improvement of the utility model, the first motor drives the screw rod to rotate so as to enable the knife sharpening mechanism to reciprocate along the length direction of the knife edge, and the second motor drives the support to reciprocate in a staggered manner with the knife edge in a rotating manner. The two combines to polish the tool setting sword that lasts on a plurality of directions, can realize good and even effect of whetting a knife.

As an improvement of the utility model, the knife sharpening part adopts a plurality of knife sharpening abrasive belts, one end of each of the knife sharpening abrasive belts is respectively connected with the output end of the second motor, and the other end of each of the knife sharpening abrasive belts is respectively connected with the belt pulley. The knife grinding part adopts a knife grinding abrasive belt, and has the characteristics of long service life and good knife grinding effect.

As an improvement of the utility model, the sharpening abrasive belt close to the output end of the second motor adopts a coarser sharpening abrasive belt, and the sharpening abrasive belt far away from the output end of the second motor adopts a finer sharpening abrasive belt. The improvement makes the knife sharpening abrasive belt close to the second motor be rough grinding, the knife sharpening abrasive belt far away from the second motor be fine grinding, and when the knife sharpening mechanism moves along the screw rod to finish a grinding process and returns to the initial position, the grinding mode of the knife edge is fine grinding, rough grinding and fine grinding. Use fine grinding as the complete grinding process of once, it is effectual to sharpen a knife, promotes to use and experiences. .

As an improvement of the utility model, the belt pulley is connected to the support, and the knife sharpening abrasive belt is arranged in parallel with the support. The knife sharpening abrasive belt is arranged in parallel with the support, the second motor rotates to drive the knife sharpening abrasive belt to rotate, and the knife sharpening abrasive belt is contacted with one side face of the knife edge in the direction staggered with the knife edge so as to efficiently sharpen the knife edge.

As an improvement of the present invention, a clamping space for clamping a tool is provided on the tool holder, and the cutting edge of the tool is exposed from the clamping space. The tool apron is provided with the clamping space for clamping the tool, so that the tool can be conveniently placed without the use of a type, the tool is stably clamped, and the operation reliability of the device is improved.

As an improvement of the present invention, the automatic sharpener further comprises a rotating mechanism, the rotating mechanism rotates the sharpener seat to switch the matching surface of the blade and the sharpening portion, the rotating mechanism comprises a third motor, and an output end of the third motor is connected with one end of the sharpener seat. The improvement drives the tool apron to rotate by setting the rotating mechanism so as to adjust the matching surfaces of the cutting edge and the knife sharpening part, and can realize that a single knife sharpening part is adopted to polish a plurality of surfaces of the cutting edge, so that the applicability and the functionality of the device are further improved, and the device has the characteristics of stable operation and high controllable degree.

As an improvement of the utility model, the tool apron is provided with an electromagnetic fixing mechanism, a supporting seat is arranged below the tool apron, a cushion block and an electromagnetic sensor which are matched with the surface of the tool are arranged on the supporting seat, the electromagnetic sensor interacts with the electromagnetic fixing mechanism when the tool is sharpened, and the electromagnetic fixing mechanism is electrified to fix the position of the tool. A fixing structure of an electromagnet is arranged on the tool apron, and the tool is fixed in the clamping space when the electromagnet is electrified; when the knife is sharpened, the electromagnetic sensor monitors whether a knife is in the clamping space, and when the knife is in the clamping space, the electromagnet is electrified, so that the knife can be fixed in the clamping space;

when the cutter is not needed to be removed or the sharpening is finished, the electromagnet is powered off, and the cutter can remove the clamping space.

Drawings

Fig. 1 is a schematic structural view of a tool holder of the present invention in a first position.

Fig. 2 is a schematic structural view of the tool holder of the present invention in a second position.

Fig. 3 is a schematic structural view of the tool holder of the present invention in a third position.

Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 5 is a schematic view of a fourth motor transmission structure in the second embodiment of the present invention.

Fig. 6 is a schematic diagram of an embodiment of the present invention.

Shown in the figure: 1. a tool apron; 1.1, clamping a space; 2. a knife sharpening mechanism; 2.1, a knife sharpening part; 2.2, a bracket; 2.21, a transmission groove; 2.4, a second motor; 3. a drive mechanism; 3.1, a first motor; 3.2, a screw rod; 3.3, a screw rod bearing; 4. a belt pulley; 5. a third motor; 6. an electromagnetic fixing mechanism; 7. a supporting seat; 7.1, an electromagnetic sensor; 7.2, a silica gel pad; 8. a metal weighting block; 9. a housing; 10. a water tank; 10.1, a pump body; 10.2, a water spraying opening; 11. a fixed seat; 11.1, mounting grooves; 12. a fourth motor; 12.1, a cam; 13. a transmission seat; 13.1, a sliding seat; 14. a roller; 15. a cutter; 16. and a fifth motor.

Detailed Description

The utility model is further described with reference to the following figures and specific examples.

Referring to fig. 1-6, an automatic knife sharpener includes a knife holder 1, a knife sharpening mechanism 2, and a driving mechanism 3, wherein the knife holder 1 is used for holding a knife 15;

the driving mechanism 3 comprises a first motor 3.1, a screw rod 3.2 and a screw rod bearing 3.3, the first motor 3.1 is connected with the screw rod 3.2, the screw rod bearing 3.3 is matched with the screw rod 3.2, and the knife sharpening mechanism 2 is connected with the screw rod bearing 3.3 to enable the knife sharpening mechanism 2 to float by taking the screw rod 3.2 as a center;

first motor 3.1 rotates and removes reciprocating motion along cutting edge length direction with drive sharpening mechanism 2, sharpening mechanism 2 includes sharpener portion 2.1, and sharpening mechanism 2 that floats the setting orders about sharpener portion 2.1 to have all the time and hugs closely a side trend at the cutting edge.

After adopting the structure, compared with the prior art, the automatic sharpener disclosed by the utility model has the following advantages: the knife sharpening mechanism 2 is connected with the screw rod bearing 3.3, the knife sharpening mechanism 2 can rotate within a certain range by taking the screw rod 3.2 as a circle center, and then the position of the knife sharpening part 2.1 of the knife sharpening mechanism 2 floats, the knife sharpening part 2.1 of the first motor 3.1 always has a side trend of being tightly attached to a cutting edge in the process of driving the knife sharpening mechanism 2 to move in a reciprocating mode, so that the knife sharpening part 2.1 has good sharpening effects on the cutting edge with inclination and irregularity, and the device is high in applicability and can polish various cutters 15; the device also has the characteristics of simple and reliable structure and high advanced degree.

As an improvement of the present invention, the knife sharpening mechanism 2 further includes a bracket 2.2 and a second motor 2.4, the bracket 2.2 is connected with a screw bearing 3.3, the second motor 2.4 is disposed on the bracket 2.2, and the second motor 2.4 is connected with the knife sharpening portion 2.1 to drive the rotation of the knife sharpening portion 2.1, and the bracket 2.2 and the screw bearing 3.2 are disposed at a staggered angle. Above-mentioned design, the simple structure of mechanism 2 of whetting a knife, occupation space is little, does benefit to the miniaturized design of device, and the device operation is reliable, long service life.

As an improvement of the utility model, the first motor 3.1 drives the screw rod 3.2 to rotate so as to enable the knife sharpening mechanism 2 to reciprocate along the length direction of the knife edge, and the second motor 2.4 rotationally drives the support 2.2 to reciprocate in a staggered manner with the knife edge. Above-mentioned improvement, the two combines to polish in a position of the continuous cutting edge in a plurality of directions, can realize good and even effect of whetting a knife.

As an improvement of the present invention, the knife sharpening portion 2.1 is a plurality of knife sharpening abrasive belts, one end of each of the plurality of knife sharpening abrasive belts is connected to the output end of the second motor 2.4, and the other end is connected to the belt pulley 4. Set up a plurality of abrasive bands of whetting a knife, can further promote the effect of whetting a knife.

As an improvement of the utility model, the sharpening abrasive belt close to the output end of the second motor 2.4 adopts a coarser sharpening abrasive belt, and the sharpening abrasive belt far away from the output end of the second motor 2.4 adopts a finer sharpening abrasive belt. Because the grinding wheel close to the second motor 2.4 is used for rough grinding and the grinding wheel far from the second motor 2.4 is used for fine grinding, when the knife grinding part 2.1 finishes one grinding process and returns to the initial position, the grinding mode of the knife edge is fine grinding, rough grinding and fine grinding. The fine grinding was terminated as a complete grinding.

As an improvement of the utility model, the belt pulley 4 is connected to the support 2.2, and the knife sharpening abrasive belt is arranged in parallel with the support 2.2. The sharpening abrasive belt is arranged in parallel with the support 2.2, the second motor 2.4 rotates to drive the sharpening abrasive belt to rotate, and the sharpening abrasive belt is contacted with one side surface of the cutting edge in the direction staggered with the cutting edge so as to efficiently polish the cutting edge.

As an improvement of the present invention, the tool holder 1 is provided with a clamping space 1.1 for clamping the tool 15, and the cutting edge of the tool 15 is exposed from the clamping space 1.1. Set up centre gripping space 1.1 on blade holder 1 and be used for centre gripping cutter 15, have the convenient not type cutter 15 of using and put into to the stable characteristics of centre gripping of cutter 15 promote the reliability of device operation.

As an improvement of the present invention, the automatic knife sharpener further comprises a rotating mechanism, the rotating mechanism rotates the knife holder 1 to switch the matching surface between the knife edge and the knife sharpening portion 2.1, the rotating mechanism comprises a third motor 5, and an output end of the third motor 5 is connected with one end of the knife holder 1. Through setting up slewing mechanism drive blade holder 1 rotatory to adjustment cutting edge and the fitting surface of portion of whetting a knife 2.1, can realize adopting a single portion of whetting a knife 2.1 to polish to a plurality of faces of cutting edge, further hoisting device's suitability and functional, and device simple structure are reliable, advanced degree is high, still has the stable and controllable high characteristics of degree of operation.

As an improvement of the present invention, the tool apron 1 is provided with an electromagnetic fixing mechanism 6, a supporting seat 7 is arranged below the tool apron 1, a cushion block and an electromagnetic sensor 7.1 which are matched with the surface of the tool 15 are arranged on the supporting seat 7, when the tool is sharpened, the electromagnetic sensor 7.1 interacts with the electromagnetic fixing mechanism 6, and the electromagnetic fixing mechanism 6 is electrified to fix the position of the tool 15. A fixing structure of an electromagnet is arranged on the tool apron 1, and the tool 15 is fixed in the clamping space 1.1 when the electromagnet is electrified; when grinding a knife, the electromagnetic sensor 7.1 monitors whether a knife 15 is in the clamping space 1.1, when the knife 15 is available, the electromagnet is electrified, and the knife 15 can be fixed in the clamping space 1.1;

when there is no tool 15 or the tool 15 needs to be removed at the end of sharpening, the electromagnet is de-energized and the tool 15 can remove the clamping space 1.1.

The working principle is as follows: blade holder 1 sets up on the right side of lead screw 3.2, and portion 2.1 and the second motor 2.4 of whetting a knife all set up on support 2.2 on lead screw 3.2 right side, and portion 2.1 of whetting a knife is located the top of blade holder 1, therefore under self gravity condition, portion 2.1 of whetting a knife has the trend towards the cutting edge skew all the time, when situations such as radian change appear in the cutting edge of cutter 15, portion 2.1 of whetting a knife can remain the contact all the time with a side of cutting edge.

A metal weight 8 is suspended below the transmission position of the screw rod 3.2 and the knife sharpening part 2.1, so as to balance the center of gravity.

The angle deflection of the knife grinding part 2.1 from the tail part of the cutter 15 to the knife tip can reach 14 degrees, the maximum straight line distance is 31.6mm, and the range can be suitable for most cutters 15 on the market.

Three silica gel pads 7.2 are arranged on the supporting seat 7, and the cutter 15 is prevented from being damaged when placed. An electromagnetic sensor 7.1 in the supporting seat 7 adopts a metal sensor to sense the cutter 15, so that an electromagnet on the cutter holder 1 is electrified to adsorb the cutter 15.

The both ends of lead screw 3.2 still are provided with proximity switch, and proximity switch uses with the cooperation of metal weight 8 for the signal that metal weight 8 is close to is received to the position of monitoring metal weight 8, and first motor 3.1 receives signal and antiport. The proximity switch is arranged to enable the screw rod bearing 3.3 to have a limit position along the movement of the screw rod 3.2, and move back when reaching the limit position, so that the structure is reasonable, and the reliability is high.

The tool rest is characterized in that a shell 9 containing the mechanism is further arranged, a notch is formed in the shell 9, a user can move out of the tool rest 1 or install a tool 15 into the tool rest 1 through the notch, and a main control is further arranged in the shell 9 and is respectively electrically connected with the first motor 3.1, the second motor 2.4, the third motor 5, the electromagnetic fixing mechanism 6, the electromagnetic sensor 7.1 and the two proximity switches.

Can also set up the iron fillings mechanism in casing 9, the iron fillings mechanism can adopt the iron fillings mechanism that removes of water spray formula, it includes water tank 10, the pump body 10.1, and water jet 10.2, water jet 10.2 is close to sharpen sword portion 2.1 and the output sets up towards blade holder 1, the pump body 10.1 is used for leading-in water jet 10.2 of medium in the water tank 10, casing 9 below still is provided with the leakage fluid dram, when sharpening mechanism 2's output and cutting edge and polishing, the iron fillings mechanism that removes of water spray formula sprays water in order to get rid of iron fillings to cutting edge department. Further the suitable experience of hoisting device promotes the effect of whetting a knife simultaneously.

The first position state: the holder 1 is kept in a vertical position, the electromagnetic fixing mechanism 6 is in a power-off state, and a user can insert or remove the tool 15 into or from the holder 1 through the notch.

The second position state: after the cutter 15 is inserted into the cutter holder 1, the cutter sharpening is started, the third motor 5 drives the cutter holder 1 to rotate clockwise until one end face of the cutter holder 1 abuts against the supporting seat 7, at the moment, the second motor 2.4 rotates to drive the cutter sharpening part 2.1 to rotate, the rotating cutter sharpening part 2.1 is in contact with one side face of the cutter edge to polish the cutter edge, and the first motor 3.1 rotates to drive the screw rod bearing 3.3 to link the support 2.2 and linearly reciprocate along the length direction of the cutter edge.

The third position state: the first motor 3.1 drives the tool apron 1 to rotate anticlockwise until the other end face of the tool apron 1 abuts against the supporting seat 7 (the tool apron is rotated upwards), at the moment, the second motor 2.4 rotates to drive the knife grinding part 2.1 to do reciprocating linear movement perpendicular to the cutting edge through the transmission unit, the third motor 5 rotates to drive the screw rod 3.2 to link the reciprocating linear movement of the transmission unit seat parallel to the cutting edge through the drive screw rod 3.2, and the knife grinding part 2.1 is in contact with the other side face of the cutting edge to grind in the process.

Referring now to fig. 4-6, as a second embodiment of the blade section 2.1 of the present invention: the knife grinding part 2.1 adopts two grinding wheels, the two grinding wheels are coaxially connected with the output end of the second motor 2.4 respectively, the grinding wheel with fine roughness is close to the output end of the second motor 2.4, and the grinding wheel with rough roughness is far away from the output end of the second motor 2.4;

set up transmission housing 13 between support 2.2 and lead screw bearing 3.3, transmission housing 13 and lead screw bearing 3.3 fixed connection, transmission housing 13 is connected with support 2.2 transmission, transmission housing 13 includes slide 13.1, be provided with on the slide 13.1 with support 2.2 complex spout, support 2.2 upper end is connected with the spout, the lower extreme of support 2.2 is provided with driving groove 2.21, the fit is provided with roller 14 in driving groove 2.21, roller 14 passes through cam 12.1 and is connected with the output of fourth motor 12, driving groove 2.21 and support 2.2 are the crisscross structure setting in position.

In the second embodiment, the worker may set a detection device for identifying the position of the blade, and the fourth motor 12 is matched to rotate the driving bracket 2.2 to move so as to keep the bottom of the grinding wheel attached to the upper surface of the blade all the time.

The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above-mentioned embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the utility model may occur to those skilled in the art without departing from the principle of the utility model, and are considered to be within the scope of the utility model.

Claims

1. An automatic sharpener, its characterized in that: the device comprises a tool apron (1), a tool sharpening mechanism (2) and a driving mechanism (3), wherein the tool apron (1) is used for clamping a tool (15);

the driving mechanism (3) comprises a first motor (3.1), a screw rod (3.2) and a screw rod bearing (3.3), the first motor (3.1) is connected with the screw rod (3.2), the screw rod bearing (3.3) is matched with the screw rod (3.2), and the knife sharpening mechanism (2) is connected with the screw rod bearing (3.3) to enable the knife sharpening mechanism (2) to float by taking the screw rod (3.2) as a center;

the first motor (3.1) rotates to drive the sharpening mechanism (2) to move back and forth along the length direction of the cutting edge, the sharpening mechanism (2) comprises a sharpening part (2.1), and the sharpening mechanism (2) which is arranged in a floating mode drives the sharpening part (2.1) to always have a side trend of being tightly attached to the cutting edge;

the automatic knife sharpener further comprises a rotating mechanism, the rotating mechanism rotates the knife holder (1) to switch matching surfaces of the cutting edge and the knife grinding part (2.1), the rotating mechanism comprises a third motor (5), and the output end of the third motor (5) is connected with one end of the knife holder (1).

2. The automatic sharpener of claim 1, wherein: the knife sharpening mechanism (2) further comprises a support (2.2) and a second motor (2.4), the support (2.2) is connected with a screw rod bearing (3.3), the second motor (2.4) is arranged on the support (2.2), the second motor (2.4) is connected with the knife sharpening portion (2.1) to drive the rotation of the knife sharpening portion (2.1), and the support (2.2) and the screw rod (3.2) are arranged in a staggered angle.

3. The automatic sharpener of claim 2, wherein: the first motor (3.1) drives the screw rod (3.2) to rotate so as to enable the sharpening part (2.1) to reciprocate along the length direction of the cutting edge, and the second motor (2.4) rotationally drives the sharpening part (2.1) to reciprocate in a manner of staggering with the cutting edge.

4. The automatic sharpener of claim 2, wherein: the knife sharpening part (2.1) adopts a plurality of knife sharpening abrasive belts, one ends of the knife sharpening abrasive belts are respectively connected with the output end of the second motor (2.4), and the other ends of the knife sharpening abrasive belts are respectively connected on the belt pulley (4).

5. The automatic sharpener of claim 4, wherein: the sharpening abrasive belt close to the output end of the second motor (2.4) adopts a coarser sharpening abrasive belt, and the sharpening abrasive belt far away from the output end of the second motor (2.4) adopts a finer sharpening abrasive belt.

6. The automatic sharpener of claim 4, wherein: the belt pulley (4) is connected to the support (2.2), and the knife sharpening abrasive belt is arranged in parallel with the support (2.2).

7. The automatic sharpener of claim 1, wherein: the tool holder (1) is provided with a clamping space (1.1) for clamping a tool (15), and the cutting edge of the tool (15) is exposed out of the clamping space (1.1).

8. The automatic sharpener of claim 1, wherein: the tool apron is characterized in that the tool apron (1) is provided with an electromagnetic fixing mechanism (6), a supporting seat (7) is arranged below the tool apron (1), a cushion block matched with the surface of a tool (15) and an electromagnetic sensor (7.1) are arranged on the supporting seat (7), the electromagnetic sensor (7.1) interacts with the electromagnetic fixing mechanism (6) during tool grinding, and the electromagnetic fixing mechanism (6) is electrified to fix the position of the tool (15).