CN2832427Y - An electric sharpener - Google Patents

Abstract

The utility model provides an electric knife sharpener, which comprises an upper shell, a lower shell, and a power transmission system consisting of a motor, a fan blade, a coupling, a main shaft, a shaft end spring and a rough and fine grinding wheel which are positioned in the shells; constitute sword groove structure by little sand seat and sand seat support, its characterized in that: the small sand seat is in a V-shaped groove shape, is fixed in the shell through a sand seat bracket, is inclined at an angle to be consistent with the angle of the cutter groove, and is provided with a spring which can support the small sand seat to bear a constant pressure at the bottom of the small sand seat; the motor and the main shaft are combined and fixed in the shell body and are connected with the switch; two ends of the main shaft are respectively provided with a pressure spring which can make the main shaft and the grinding wheel move axially when being extruded by the cutter. The utility model has the advantages of novel in design, labour saving and time saving, easy operation is convenient, and the grinding tool blade is sharp. The method is widely applicable to the fields of families, hotels, restaurants and the like.

Description

An electric sharpener

Technical field:

The utility model relates to a novel electric knife sharpener, in particular to an electric knife sharpener.

Background technique:

With regard to the sharpening of knives in the home kitchen, people's awareness generally stays in using manpower to sharpen the blade on the whetstone, which is time-consuming and laborious, and requires skilled sharpening techniques to sharpen the blade. In recent years, electric knife sharpeners that use motors to drive the grinding wheel to rotate have begun to appear, which is faster and labor-saving than manual sharpening. Generally, electric knife sharpeners sold on the market are driven by a motor to rotate the grinding wheels on both sides. The user presses the blade of the knife against the grinding wheel at an appropriate angle, drags the handle slowly with the hand, and uses the rotating grinding tool to sharpen the blade. Change the profit and complete the sharpening operation. Although this method of replacing manpower with machines improves work efficiency, it saves time and effort compared with manpower sharpening a knife. But due to the limitations of its structure and sharpening implementation process, there are still the following unfinished shortcomings to be improved. One is that the size and direction of the user's force when dragging the handle of the knife are inconsistent, so it is easy to cause unevenness of the knife edge after grinding, and the depth of the cutting edge is different. It is also possible to lock the grinding wheel and the motor due to the excessive pressure manually applied to the handle of the knife and even cause the cutting of the housing support when the blade exits the knife groove. The second is because the user of the above-mentioned knife sharpener can only do one-sided grinding each time when sharpening the knife, so no matter how skilled the user is and how appropriate the force is, it is inevitable that the sharpening will be formed on the back of the sharpened blade. Burrs and edge curls make it difficult to achieve perfect results.

Invention content:

The purpose of the utility model is to provide an electric knife grinder which is novel in design, compact and practical, saves time and effort, sharpens the cutting edge of the grinding knife, and can correct the unilateral burr and curling of the knife edge produced by the traditional knife sharpening method.

The purpose of this utility model is solved by the following technical solutions: the electric knife sharpener comprises a power transmission system composed of upper and lower housings, motors, fan blades, couplings, main shafts, shaft end springs and coarse and fine grinding wheels located in the housings , the sipe structure is formed by the small sand seat and the sand seat bracket, which is characterized in that: the small sand seat is in the shape of a V-shaped groove, fixed in the shell by the sand seat bracket, and inclined at an angle to make it consistent with the angle of the sipe, At the same time, there is a spring at the bottom of the small sand seat that can support the small sand seat to withstand a constant pressure; the motor and the shaft combination composed of a coupling, a grinding wheel, and a main shaft are fixed in the housing, and there is a spring at each end of the main shaft. A pressure spring (10) that enables the main shaft and the grinding wheel to move axially and maintain dynamic balance when squeezed by the tool.

In the above-mentioned electric knife grinder, the small sand seat is placed in front of the grinding wheel, and the V-shaped groove of the small sand seat is consistent with the knife groove and is in the same angular direction. When the grinding tool is pulled out, it must pass through the grinding wheel and the V-shaped groove successively.

The electric knife grinder mentioned above is equipped with a spring under each small sand seat, and this spring can support the small sand seat to move up and down, and always give a constant pressure to the knife passing through the V-shaped groove, so that the blade must pass through the small sand seat. Milled and corrected by V-grooves.

The utility model has the following advantages:

1. The design is novel, time-saving and labor-saving, and the operation is simple and convenient. The quality and efficiency of sharpening will not be affected by the user's improper operation or different directions of force. The user only needs to hold the handle of the knife with a slight downward force and drag the knife forward to complete the knife sharpening.

2. After grinding, the knife is sharp and flat, without burrs and edge curling on the cutting edge, with a near-perfect grinding effect, and can correct the unilateral burrs and edge curling of the blade produced by traditional knife sharpening methods.

Description of drawings:

The utility model is described below in conjunction with accompanying drawing;

Fig. 1 is a sectional structure diagram of the utility model;

Fig. 2 is a three-dimensional structural schematic diagram with the upper cover removed;

Figure 3 is an exploded diagram of product development.

Detailed ways:

The embodiment of the present utility model will be further described in conjunction with accompanying drawings 1-3. The knife grinder consists of an upper housing 1, fan blades 2, motor 3, lower housing 4, switch 5, small sand seat 6, spring 7, sand seat bracket 8, dust cover 9, shaft end spring 10, outer connecting shaft Device 11, grinding wheel 12, main shaft 13, grinding wheel 14, inner coupling shaft device 15, pressing plate 16 form. The specific structure of the knife sharpener is to install the motor 3 and the shaft combination in the lower casing, one end of the motor 3 drives the cooling fan 2, and the other end is connected to the main shaft combination through the inner coupling 15 and the outer coupling 11, the inner and outer The shaft coupling is a loose fit, so that the main shaft 13 can still be axially displaced when it is working and rotating. The main shaft 13, the outer coupling 11 and the grinding wheel 12.14 are fastened together to form a shaft assembly. The two axle ends of main shaft 13 have aperture respectively, and spring 10 is built-in, and this spring action makes main shaft 13 and combination be in floating state, and it can be made axial displacement by the extrusion of blade. There is an arc-shaped pressing plate 16 on both sides of each grinding wheel, and the inclined groove of pressing plate and grinding wheel 12.14 also has housing 1 itself to form a knife groove. When the cutter is put into the knife groove for grinding, the pressing plate 16 lightly presses the blade, and the effect of the main shaft spring 10 makes the blade and the grinding wheel have a constant mutual pressure, thus completing the sharpening. It avoids the need to use manpower to control the contact pressure between the blade and the grinding wheel, so that the sharpening is labor-saving and convenient.

Small sand seat 6 of the present utility model places respectively the both sides of grinding wheel 12.14 front, (referring to Fig. 2) below small sand seat 6 is provided with a spring 7, and these two parts and sand seat support 8 are fixed on the upper casing 1 together. There is a V-shaped groove in the middle of the small sand base 6. The V-shaped groove and the knife groove are consistent and in the same angle direction. When sharpening the knife, the blade just falls on the knife groove and the V-shaped groove. The two places are fixed so that the blade will not shake from side to side. After grinding The blade is flat and sharp. In addition, the spring 7 below the small sand seat 6 can buffer the sand seat from being squeezed by the blade, and can move up and down. Because the small sand seat is also made of very fine and hard grinding materials, the single-sided surface produced by the grinding of the blade like this Burrs and edge curls will be finely ground and corrected when passing through the V-shaped groove of the small sand seat to obtain a perfect grinding effect.

The combination of the grinding wheel and the main shaft of the utility model maintains dynamic balance due to the action of springs at both ends of the main shaft, and can be displaced axially by the extrusion of the blade, so that the pressure between the blade and the grinding wheel is basically kept constant. In addition, there is a small sand seat in front of the grinding wheel, that is, at the exit of the knife groove. When the tool is grinding, it must fall on the knife groove and the small sand seat formed by the grinding wheel and the pressure plate at the same time, so that the blade always keeps running in a straight line and avoids dragging the knife by hand. The unevenness of the blade and the depth of the blade caused by the inconsistent direction and strength of the shank; at the same time, due to the support of the small sand seat and the axial displacement of the combination of the main shaft, the grinding wheel and the motor will not be locked due to excessive pressure.

Claims (3)

1, a kind of electric knife grinder, comprise lower house (1.4) and be positioned at the motor (3) of housing, fan blade (2), shaft joint (11.15), main shaft (13), the power drive system that axle head spring (10) and thickness emery wheel (12.14) constitute, wherein constitute cutter groove structure by little sand seat (6) and sand seat support (8), it is characterized in that: the V-shaped groove shape of described little sand seat (6), be fixed in the housing by sand seat support (8), and the angle that tilts makes it consistent with the angle of cutter groove, is positioned at little sand seat (6) bottom simultaneously and is provided with one and can supports the spring (7) that little sand seat bears a constant pressure; Described motor (3) and be fixed in the housing by the common axle combination that constitutes of shaft joint (11), emery wheel (12), main shaft (13), emery wheel (14) wherein respectively is provided with one and can axially moves and keep dynamically balanced compression spring (10) when making main shaft and emery wheel be subjected to the cutter extruding at main shaft (13) two ends.

2, electric knife grinder according to claim 1 is characterized in that: described little sand seat (6) places the place ahead of emery wheel (12.14), and the V-shaped groove of little sand seat is consistent with the cutter groove to be same angle direction also.

3, electric knife grinder according to claim 1 and 2 is characterized in that: be positioned at every little sand seat (6) below be equipped with a spring (7).

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