KR20070058274A - Grinding machine - Google Patents

Abstract

A knife grinder is provided to minimize a grinding error by preventing a knife blade which is contacted with a grinding wheel from shaking. An upper plane of a case(11), which is opened, is shield by a cover having a blade insertion groove(12a). A screw axis(20) is installed in a lateral direction in the case. A spiral line having an opposite direction is formed from a middle part of a screw axis. A handle(21) which receives rotation power is installed on an end of which is exposed to an external part. A guide axis(25) is installed to be parallel with the end of the screw axis. A housing(31, 36) has a screw hole which is connected to the screw axis and is moved along an axis, and a penetration hole which the guide axis is penetrated. A rotation shaft(32, 37) is rotatably installed on the housing, and is perpendicular to the screw axis. A grinding wheel(33, 38) is integratedly connected to a front side of the rotation shaft. A driven pulley(34, 39) is connected to a rear side of the rotation shaft. A motor is installed on a lower part of the case, and has a rotation shaft which is connected to the driven pulley by a belt and transfers a power to the driven pulley. The knife blade is installed to be opposite to each other on an insertion path, and inserts to be vertical state by elastically compressing both side planes of the knife blade. A spring(s) elastically supports a load. Left/right cylinders(51, 55) which are protruded are installed to be opposite to each other. Left/right camber plates(c1, c2) are rotatably connected to the protruded end unit of each load, and are contacted with a side plane of the knife blade.

Description

Knife Grinding Machine

1 is a perspective view showing a knife grinder according to the present invention,

Figure 2 is a perspective view showing the internal configuration by removing the cover of the knife grinder according to the present invention,

3 is a plan sectional view for explaining the internal configuration of the knife grinder according to the present invention,

Figure 4 is a side cross-sectional view for explaining the internal configuration of the knife grinder according to the present invention,

Figure 5 is a front view for explaining the supporting means in the knife grinding machine according to the present invention.

<Explanation of symbols for the main parts of the drawings>

10: body 11: case 11a: water tank

11b Absorber 12 Cover 12a Entry groove

20: screw shaft 21: handle 25: guide shaft

30,35 polishing means 31,36 housing 32,37 driven pulley

40: motor 50: support means 51, 55: left and right cylinders

b: body c1, c2: left and right camber plate

s: spring

The present invention relates to an electric knife grinder which performs grinding by inserting a knife between a pair of grinding wheels rotated in a corresponding direction under the driving force of a motor, and more particularly, relates to the skill level by stably inducing the entry of the blade. The present invention relates to a knife grinder that can achieve an optimal grinding operation without

In general, if you use excessive time to cut kitchen knife or fruit used in the kitchen for a long time, the blade becomes dull and the knife is hard to lift.In this case, the blade is placed on a normal grinding wheel and sprinkled with water. The blades are moved upright, or the blades are sandwiched between the fixed cylindrical rods on both sides, and the blades are polished while moving back and forth. The skill of the required, and also the risk of safety accidents are high, there is a problem that most of the uneconomical closure to replace the knife.

In order to improve this problem, conventionally, a knife grinder has been proposed that rotates a pair of grinding wheels using a driving source and enters a blade between them to raise the blade. However, the knife grinder is no longer used when the grinding wheel is worn. There was a problem that can not perform a function as a short lifespan.

In order to solve the above problems, the applicant has filed an application for improved knife grinder through Utility Model Registration No. 339789 (Technology Evaluation Maintenance Determination) and Utility Model Registration No. 339790 (Technology Evaluation Maintenance Determination).

When the configuration of the knife grinder registered in advance by the present applicant is roughly described, the fixed case having the open side and the moving case covering the open side of the fixed case are connected to each other by an elastic member, and the fixed case and the movable Left and right grinding wheels are rotatably fixed to the case by brackets, respectively. In addition, a motor is provided below the left and right polishing wheels and is connected to the left and right polishing wheels and the belt to transfer power.

The knife grinding machine configured as described above is connected to a motor and a belt by left and right grinding wheels, and receives a driving force, and rotates in opposite directions to each other. The grinding operation is performed by inserting a blade portion therebetween. In addition, when the abrasive wheel is worn, the fixed case supporting the left and right abrasive wheels and the moving case are subjected to an elastic force that is pulled in a direction adjacent to each other by the elastic member. maintain.

However, the knife grinder registered by the present applicant as described above has a disadvantage in that the gap between the left and right polishing wheels is adjusted by the elasticity of the elastic member, so that it is impossible to adjust the gap due to the decrease of the elastic force of the elastic member in the long term use. · Since the right grinding wheel is always in contact with the elastic force, there is a problem that the wear phenomenon is accelerated and the life of the grinding wheel is greatly shortened. In particular, since the left and right abrasive wheels cannot guarantee stable polishing performance when uneven wear occurs, there is an inevitable need to replace the abrasive wheels.

On the other hand, in order to solve the above problems, the applicant has applied for and registered an improved "knife grinding machine" through Utility Model Registration No. 365658 (technical evaluation maintenance decision).

Applicant's registered knife grinder comprises a case in which the upper surface opened by the cover is shielded, and a screw shaft provided with a handle on one side exposed to the outside while being installed in the case in the transverse direction, and the gap on one side of the screw shaft Guide shafts are installed parallel to each other at intervals. In addition, the screw shaft has a pair of housings that move along the axis, and is rotatably installed on these housings while being rotatably disposed on the screw shaft and integrally coupled to the front side of the rotating shaft to form an uneven surface. It constitutes a grinding wheel to the rear side of the rotating shaft constitutes a driven pulley that is connected to the motor and the belt to receive power.

Through this configuration, it is possible to adjust the gap between the pair of polishing wheels by the handle operation, and the structure of the left and right polishing wheels engaged in the uneven shape enables efficient polishing while minimizing the wear caused by the friction between the polishing wheels. Doing.

However, the above-described knife grinder applied by the applicant has a disadvantage in that the polishing operation is difficult because there is no structure that firmly supports the blade when entering the blade.

That is, when the operator enters the blade, the operator must enter the direction perpendicularly between the left and right grinding wheels. Since the left and right grinding wheels are rotating at high speed, it is difficult for the operator to maintain the blades in a vertically upright position. There was a very difficult disadvantage.

As a result, the blades located between the rotating wheels rotating at high speed may cause irregular flow to the left and right, resulting in uneven wear of the blades, and in the case of thin products, the blades may be damaged or damaged by irregular grinding. There was a problem of increasing the risk of safety accident by causing breakage.

In order to solve this disadvantage, a holder consisting of a pair of supports made of a material such as rubber for supporting both sides of the blade is installed on one side of the cover. However, the holder has a problem that the contact surface is easily worn due to frequent blade entry, so that the distance between the supports is widened, thereby increasing the dissatisfaction of the consumer due to the inconvenience of frequent replacement and the increase in maintenance cost.

The present invention was created in order to solve the above problems, the present invention is to stably maintain the posture of the blade by elastically supporting both sides of the blade when entering the blade between the pair of polishing wheels to perform the polishing operation It is to provide a knife grinder that can facilitate and prevent the risk of safety accidents in advance.

Knife grinder according to the present invention for realizing the above object is a case that is shielded by the upper surface opened by a cover formed with a blade entry groove; The screw shaft is installed in the case in the transverse direction and the two sides are opposed to each other on the basis of the middle portion, and the screw shaft and the one side of the screw shaft is integrally provided with a handle receiving a reverse rotation operation force at one end exposed to the outside A gap adjusting means having a guide shaft installed parallel to the gap; A screw hole which is screwed to the screw shaft and is moved along the shaft, and a housing having a through hole through which the guide shaft passes to one side thereof, and a rotatable shaft which is rotatably disposed with respect to the screw shaft and is rotatably installed in the housing. A pair of left and right polishing means which are integrally coupled to the front side of the polishing wheel having an uneven surface and a driven pulley coupled to the rear side; It is provided on the inner lower side of the case and includes a motor having a rotary shaft which is connected to the driven shaft pulley and the belt of the left and right grinding means connected to the rotating shaft for transmitting power,

The blades are arranged in a direction facing each other on the entry path to enter the blades to elastically press both sides of the blades to maintain the entry posture in an upright state, the spring interposed therebetween elastically supporting the rod to protrude outward The right cylinder is disposed oppositely and rotatably connected to the protruding end of each rod, characterized in that it further comprises a support means having a left and right camber plate in contact with one side of the blade.

As a preferred feature of the present invention, the support means is provided on the front upper side of the cover and the upper side of the housing of the left and right polishing means so as to support the front end and the middle portion of the blade, respectively, the left of the support means Right camber plates are deflected to the rod such that they are spaced apart at the top of each other and contacted at the bottom.

As another preferable feature of the present invention, the case has a form that surrounds the lower side of the polishing wheel is formed integrally with a water tank that can hold a certain amount of water, the inside of the tank absorbs the stored water to contact the polishing wheel The absorbent body which consists of a nonwoven fabric which supplies water by this is provided.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, the terms or words used in the present specification and claims are consistent with the technical spirit of the present invention based on the principle that the inventor can appropriately define the concept of the term in order to explain the invention in the best way. It must be interpreted as meaning and concept.

Hereinafter, a preferred embodiment of a knife grinder according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing a knife grinder according to the present invention, Figure 2 is a perspective view showing the internal configuration by removing the cover of the knife grinder according to the present invention, Figure 3 is to explain the internal configuration of the knife grinder according to the present invention It is a plan cross section for. And, Figure 4 is a side cross-sectional view for explaining the internal configuration of the knife grinder according to the present invention, Figure 5 is a front view for explaining the support means in the knife grinder according to the present invention.

As shown in the figure, the knife grinder of the present invention is substantially divided into a main body 10 forming an outer body, a gap adjusting means installed inside the main body 10, and the gap is controlled by the gap adjusting means. Support for maintaining the stance of the blade stably with the left and right grinding means 30 and 35 for polishing the blade and the end of the motor 40 for providing rotational force to the left and right polishing means 30 and 35. Means.

The main body 10 is composed of a case 11 having a box shape with a large top surface open, and a cover 12 for shielding the open top surface of the case 11, the case 11 having various components therein. The leg 15 is provided on the lower side to provide a space therein. In addition, the cover 12 is a plate-shaped member for shielding the open top surface of the case 11 is a structure in which a front portion of the center portion is cut off so that the entry groove 12a through which the blade can enter.

On the other hand, the case 11 of the main body 10 is integrally formed with a water tank (11a) that can hold a certain amount of water while having a form surrounding the lower side of the polishing wheels (33, 38) to the front one side, this tank One side of 11a is provided with an absorbent body 11b made of a nonwoven fabric that absorbs the stored water, and as a result, the absorber body 11b is brought into contact with the lower surfaces of the polishing wheels 33 and 38. The water is supplied to the blades to enable stable polishing upon friction with the blade.

The main body 10 configured as described above is provided with a space adjusting means including a screw shaft 20 and a guide shaft 25 as shown in FIGS. 2 and 3 inside the case 11.

The gap adjusting means includes a screw shaft 20, a handle 21 for allowing the user to rotate the screw shaft 20, and one or more parallel to each side of the screw shaft 20 at a predetermined interval. It consists of a guide shaft 25 is installed.

The screw shaft 20 is a screw member which is disposed in the transverse direction in the case 11 so as to be rotatable, and spirals are formed in opposite directions on both sides with respect to the middle part, and are moved outward of the case 11. The exposed one end is a structure that the handle 21 receives the rotational manipulation force of the user is coupled. The guide shaft 25 is a rod-shaped member having a predetermined length. The guide shaft 25 is installed parallel to one side of the screw shaft 20 at a predetermined interval so that the left and right grinding means 30 and 35 are screw shafts ( When moved along 20) it serves to support stable movement without flow.

The gap adjusting means configured as described above adjusts the gap between the left and right grinding means 30 and 35 to be described later by rotating the screw shaft 20.

Left and right grinding means (30, 35) is largely the housing (31, 36) through which the screw shaft 20 and the guide shaft (25) is inserted, and the rotating shaft rotatably installed on the housing (31, 36) (32,37), and polishing wheels (33,38) coupled to the front sides of the rotary shafts (32,37) and driven pulleys (34,39) coupled to the rear sides of the rotary shafts (32,37). Structure.

The housings 31 and 36 have a structure in which a screw hole and a through hole through which the screw shaft 20 and the guide shaft 25 are inserted are formed, respectively, and the screw hole is not shown, but the screw shaft 20 is intermediate. Since both sides of the part are processed with opposite spirals, the spirals are processed correspondingly.

The rotary shafts 32 and 37 are disposed in a direction orthogonal to the screw shaft 20, that is, in a cross shape, rotatably supported in the housings 31 and 36, and both ends protrude out of the housings 31 and 36. do.

The polishing wheels 33 and 38 are integrally coupled to the front ends of the rotating shafts 32 and 37 and rotated. The polishing wheels 33 and 38 at this time are grooved on the surface of the wheel having a cylindrical shape. It is a structure that can be combined with each other by repeatedly forming the protrusions and the grinding surface to form a concave-convex shape. That is, the polishing wheel 33 of the left polishing means 30 and the polishing wheel 38 of the right polishing means 35 are arranged in the form of fitting with each other by being formed in a concave-convex structure as shown in the drawing, resulting in each The polishing surfaces, which are the protrusions of the polishing wheels 33 and 38, form a portion overlapped with each other to enable uniform polishing of the blades.

The driven pulleys 34 and 39 are integrally coupled to the rear side ends of the rotating shafts 32 and 37 and connected to the motor 40 and the belt v to be rotated by receiving a driving force. One of the driven pulleys of any one of (34,39) is configured with a direction switching pulley (h) so that the pair of driven pulleys (34,39) are rotated in a direction corresponding to each other.

The motor 40 is to generate a rotational force by receiving power from the outside, and is fixed to the inner bottom side of the case 11, it is not shown but is configured to control the user operation with a switch. The motor 40 has a structure in which the two-stage pulley 41 is integrally coupled to the rotation shafts 32 and 37, and the two-stage pulley 41 is formed by each of the left and right polishing means 30 and 35 described above. It is connected to the driven pulley (34, 39) and the belt (v) to transmit the rotational force.

The knife grinder configured as described above rotates in the corresponding direction by interlocking the left and right grinding means 30 and 35 and the grinding wheels 33 and 38 connected by the belt v when driving the motor 40. Subsequently, polishing is performed by repeatedly moving the blade portion of the knife in the front-rear direction while entering between the grinding wheels 33 and 38.

On the other hand, when the polishing wheel (33, 38) is worn and the gap adjustment is necessary, it is possible to adjust the gap between the polishing wheel (33, 38) by using the gap adjusting means. That is, when the handle 21 is rotated in one direction, the screw shaft 20 in which the spirals are processed in a direction opposite to each other relative to the middle part is rotated in conjunction with the handle 21, and the pair of housings 31 and 36 interlock with each other. It is moved in the direction of being approached or spaced apart. Therefore, the operator can adjust the distance between the polishing wheels 33 and 38 only by the simple operation of rotating the handle 21 in the forward and reverse directions.

The structure of the knife grinder comprised as mentioned above is the same as the structure of the conventional knife grinder. However, the present invention is a support means for stably elastic support both sides of the front and rear end of the blade when entering the blade between the grinding wheels (33,38) to maintain the upright posture even during polishing operation ) Is additionally installed.

The support means 50 is installed on the driveway into which the blade enters, as shown in FIGS. 1 to 2, and the left and right grinding means 30 and 35, which are the upper upper side of the cover 12 and the rear side thereof. The left and right cylinders 51 and 55, which are respectively provided on the upper surfaces of the housings 31 and 36, and which greatly generate elastic pressing force, and are substantially connected to the left and right cylinders 51 and 55, respectively. It consists of the left and right camber plates c1 and c2 which contact | connect and act on a support force.

Here, the left and right cylinders 51 and 55 are provided in a body b having a hollow tubular shape, a rod r provided in the body b, and selectively mounted in and out of the body b. It is composed of a spring (s) for elastically supporting the rod (r), through this configuration the rod (r) is projected by receiving the elastic support force to the outside of the body (b).

The left and right camber plates c1 and c2 are provided as a plate-shaped plastic member rotatably connected to the respective rods r of the left and right cylinders 51 and 55. The camber plates (c1, c2) are slightly open to the outside with respect to the vertical line when viewed from the front in order to facilitate the blade entry and to maintain a stable support state in the front and rear operation with the operator entering the blade. The lower part is a structure rotatably connected to the rod (r) to have a contact angle. The inclination angle of the left and right camber plates c1 and c2, that is, the camber angle may vary depending on the size of the camber plate, but is preferably about 2 to 7 ° based on the vertical line.

The left and right cylinders 51 and 55 having such a configuration will be described in detail with reference to the accompanying drawings in a state in which the cover 12 and the case 11 are installed.

First, when installed in the cover 12, the left cylinder 51 and the right cylinder 55 are respectively provided to the left and right sides relative to the access groove 12a, wherein the left and right cylinder ( 51 and 55 are arranged such that each rod r is coaxial in a direction facing each other. In this case, when the left cylinder 51 and the right cylinder 55 are fixed to the cover 12, the body b may be joined to the cover 12 by welding, but the present invention may be standardized for ease of operation and ease of operation. In the present invention, the body (b) is integrally formed with a plate-like bracket (m) by welding, and the bracket (m) is proposed to be coupled to the cover 12 by a screw member.

In addition, when installed in the left and right grinding means 30 and 35 in the case 11, the left and right cylinders 51 and 55 in the housings 31 and 36 of the left and right grinding means 30 and 35, respectively. Install each one. At this time, the left and right cylinders 51 and 55 are directly bonded to the corresponding housings 31 and 36 by welding in a state in which the rods r are coaxially disposed in a direction facing each other, or a bracket (m). It is fixed by screwing through). At this time, the left and right camber plates c1 and c2 of the support means 50 installed on the left and right polishing means 30 and 35 are exposed to the outside through the entrance grooves 12a of the cover 12.

As shown in FIG. 5, the support means 50 provided on the left and right grinding means 30 and 35 in the cover 12 and the case 11 is the left and right camber plates c1 and c2. The upper part is opened and the lower part is in contact with the structure having a camber angle, so that the blade can be naturally entered in the downward direction.

Subsequently, in the state in which the blade has been entered (the blade portion is positioned between the grinding wheels 33 and 38), the lower portions of the left and right camber plates c1 and c2 elastically press both sides of the blade. Thus, the knife is prevented from inclining in the left and right directions with respect to the access groove 12a.

In this state, when the worker repeatedly moves the knife in the front and rear direction, polishing is performed by the polishing wheels 33 and 38 which are rotated at high speed by the driving force of the motor 40, and at this time, the left and right sides of the support means 50 The camber plates c1 and c2 are rotated integrally in a state in which both sides of the knife are elastically supported by the rotatably provided structure to maintain a stable support state.

It is apparent to those skilled in the art that the present invention is not limited to the described embodiments, and that various modifications and changes can be made without departing from the spirit and scope of the present invention. Therefore, such modifications or variations will have to belong to the claims of the present invention.

The knife grinder constructed and operated as described above has the advantage of improving the workability of the blade by stably maintaining the posture of the blade entering between the pair of polishing wheels by elastically supporting both sides of the blade on the cover and the case, respectively. To provide.

In particular, it prevents the left and right shaking of the blade contacting the grinding wheel rotating at high speed, thereby minimizing the poor polishing by partial grinding and preventing the risk of safety accidents caused by partial damage and breakage of the blade. It provides an industrially useful effect that can greatly increase the

Claims (3)

A case in which the upper surface opened by the cover in which the blade entry groove is formed is shielded; The screw shaft is installed in the case in the transverse direction and the two sides are opposed to each other on the basis of the middle portion, and the screw shaft and the one side of the screw shaft is integrally provided with a handle receiving a reverse rotation operation force at one end exposed to the outside A gap adjusting means having a guide shaft installed parallel to the gap; A screw hole which is screwed to the screw shaft and is moved along the shaft, and a housing having a through hole through which the guide shaft passes to one side thereof, and a rotatable shaft which is rotatably disposed with respect to the screw shaft and is rotatably installed in the housing. A pair of left and right polishing means which are integrally coupled to the front side of the polishing wheel having an uneven surface and a driven pulley coupled to the rear side; It is provided on the inner lower side of the case and includes a motor having a rotary shaft which is connected to the driven shaft pulley and the belt of the left and right grinding means connected to the rotating shaft for transmitting power, The blades are arranged in a direction facing each other on the entry path to enter the blade so that both sides of the blades are elastically pressed to maintain the entry posture in an upright state, and a spring interposed therein elastically supports the rod to protrude to the outside. Support means having a left and right camber plate which is disposed opposite to the right cylinder and rotatably connected to the protruding ends of the rods in contact with one side of the blade; Knife grinder, characterized in that further comprises a. According to claim 1, wherein the support means are provided on the housing upper side of the left and right grinding means to the front upper side and the rear side of the cover so as to support the front end and the middle portion of the blade, respectively, the left and right of the support means Camber plate is a knife grinder, characterized in that configured to be connected to the rod so as to be spaced apart from each other at a distance from the top. According to claim 1 or claim 2, wherein the case has a form that surrounds the lower side of the polishing wheel is formed integrally with a tank that can hold a certain amount of water, one side of the tank absorbs the stored water to the polishing wheel A knife grinder, comprising: an absorber made of a nonwoven fabric for supplying water by contacting.

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