KR20220015759A - Multi-purpose multi small grinding paper - Google Patents

Abstract

The present invention provides a multi-purpose multi-small grinding device to maximize grinding quality by selectively realizing various grinding speeds customized for work properties. The multi-purpose multi-small grinding device comprises: a driving means having a drive motor receiving power to rotate a rotary shaft; and a grinding means having a grinding plate receiving the torque of the rotary shaft of the drive motor to rotate. The driving means includes: the drive motor consisting of a brushless direct current (BLDC) motor; and an encoder receiving the torque of the rotary shaft of the drive motor to transfer the torque to the grinding means.

Description

Multi-purpose multi small grinding paper

The present invention is a multi-purpose, multi-small size that maximizes polishing quality by being able to perform various operations even in a small-capacity (3kw) situation, and to selectively implement various polishing rates tailored to each operation characteristic. It relates to the grinding device.

In general, grinding is performed during the surface treatment process of a ship to remove foreign substances or impurities (brass) attached to the surface of the ship, and the surface treatment process of the floor surface of a building made of cement, concrete or marble.

For this polishing operation, a polishing apparatus suitable for each surface is applied.

As one of them, there is a patent registration No. 10-1347597 (name: Air Polishing Device for Ships), which is provided in a cylindrical shape with a certain diameter with an open lower part as known in the Gazette, and has a plurality of bottom edges a body in which a brush is planted, coupling rods having a predetermined length are installed to protrude from both sides of the upper portion, a connecting rod is installed between the coupling rods, and one end of the discharge pipe is installed in communication with the upper one side; a rotating body installed in the upper center of the body to rotate the rotating shaft by high-pressure air supplied from the outside through a supply hose; a rotary blade for grinding the surface of the ship by rotating while being churned on the rotary shaft of the rotary body; a pair of wheels installed on the coupling rod of the body so as to be adjustable in height to support the body; a handle provided in the form of a pipe of a certain length having one end fixed to the connecting rod of the body, and a handle integrally formed with a connector so that the other end of the discharge hose connected to the upper end of the discharge pipe of the body can be connected; An air polishing apparatus for ships is described, including; a collecting network installed at the other end of the handle and collecting foreign substances or dust removed by the rotary blade through the discharge pipe, discharge hose, and handle of the body.

And, in the patent registration No. 10-1573784 (name: vibratory polishing apparatus for ships), as known in the publication, it is provided in the form of a rectangular parallelepiped with an open bottom, and is formed by a partition wall of a predetermined shape on the bottom surface. Foreign substances are sucked into the vacuum part of the space, and a discharge pipe that communicates with the vacuum part and discharges foreign substances is formed to protrude on the rear surface, and a fastening hole is provided in each upper corner part, and a pair of wheels are mounted at the rear for convenient movement and a body; a driving motor installed on the upper portion of the main body to generate rotational power by an external power supply; an eccentric rotating part installed inside the vacuum part formed on the bottom surface of the main body so as to rotate by receiving the rotational power of the driving motor to suck foreign substances into the vacuum part; It is integrally mounted on the bottom surface of the bulkhead of the main body by a plurality of fastening means, and a suction hole of a predetermined diameter is formed in the center so that foreign substances sucked by the eccentric rotating unit through the suction hole can be introduced into the vacuum unit. a vacuum cover; a polishing unit which is rotated eccentrically by the eccentric rotating unit to polish the surface of the vessel; a connecting portion installed at the corner of the main body so as to be able to integrally connect the abrasive unit with the main body; A handle portion for fixing one end of an extension provided in the form of a predetermined length and pipe to the rear of the main body, and integrally forming a gripping handle on the other end of the extension to change the direction of movement of the main body; A vibratory abrasive device for ships is described.

On the other hand, in Korea Patent Registration No. 10-1627567 (Name: Dust collection cover for floor polishing apparatus for preventing dust scattering), as is known in the publication, it has a rotating plate connected to a rotating shaft that rotates by receiving the driving force of the motor, ; A plurality of abrasive rotating plates having a smaller size than the rotating plate are rotatably coupled to the rotating plate; A plurality of grinding pieces are installed on the surface of the grinding plate; A bottom surface polishing apparatus in which a plurality of polishing tips are mounted is described on the surface of the polishing piece.

And in Korea Patent Registration No. 10-0451922 (name: concrete grinding machine), as known in the publication, a cover capable of opening and closing the body is formed on the upper part of the body having a predetermined space, and a handle is provided on one side of the cover. A body part having a moving carrier is formed on the body in the lower direction of the handle, a fixing bracket is formed on the upper side of the cover, a driving motor is formed on the fixing bracket, and a driving pulley is formed on the driving shaft of the driving motor. A driving part having a rotating pulley on one side of the cover and a driving gear on the lower side so as to transmit rotational force through the driving pulley and the belt connection, and the driving part of the driving part and the driving gear of the body so that it can be rotated by meshing inside the body A grinding gear is formed on the central bottom surface, a fastening plate is formed on the lower side of the grinding gear to interlock with the grinding gear, and a rotating part fastened to the fastening plate to interlock the rotating plate, and the rotating plate of the rotating part is fastened with a fastener on all sides of the bottom surface of the rotating part. to form a fixed shaft and a flange on the lower side, and a grinder part in which a plurality of grinder pieces having a buffer spring and a grinding piece are sequentially formed on the lower side of the flange, and a grinder piece coupled to the rotating rotating plate. In order to prevent dust from being discharged to the outside, a shielding film is formed on the outer periphery of the bottom surface of the body of the main body, and a dust collecting part having a bellows formed below the shielding film is combined with a grinding machine.

In addition, in Korea Patent Registration No. 10-1615642 (name: small friction tool), as is known in the publication, a motor unit including a driving motor and a motor housing housing the driving motor; a driving gear of the driving motor, a gear unit meshing with the driving gear and including a driven gear group radially disposed with respect to the driving gear; a rotating disk each coupled to the last driven gear of the driven gear group and a pad detachably attached thereto; and a handle part connected to the motor part or the gear part; and a small friction tool including a.

Korean Patent Application No. 10-2000-0079397 (applied on Dec. 20, 2000) Korean Patent Application No. 10-2009-0062405 (applied on 2009.07.09.) Korean Patent Registration No. 10-1627567 (Registered on May 31, 2016) Korea Patent Registration No. 10-0451922 (Registered on Sept. 24, 2004) Korean Patent Registration No. 10-1615642 (Registered on April 30, 2016)

However, the conventional polishing apparatus as described above could not be applied to an electric motor of 3 kw or more fixed to a domestic household outlet capacity in Korea, and thus there was a problem of poor versatility.

That is, there is a problem in that a separate inverter must be used, but there is a problem in that the power of the machine is not able to perform the work due to the mutual mechanical characteristics of the inverter and the induction motor at low speed.

Accordingly, even when using a separate inverter, there is a problem that the operation cannot be fundamentally performed by controlling the speed.

Therefore, in the portable (small) grinding machine, only two speeds can be converted at most, and many failures occur even in two speed conversions, and the problem that the motor is frequently damaged during grinding work by lifting a heavy weight there is; In particular, there was a problem in that it was not suitable to apply even a grinding device with two speeds to the grinding operation of a heavy machine.

As such, the conventional portable (small) grinding machine has a problem in that it is not suitable for various tasks using one speed due to the limitation that it can be performed only by using the domestic electric capacity (3kw) of Korea; There is a problem that the small grinder does not meet the original purpose of the machine to use it with an inverter so that it can be applied to various tasks; According to various tasks, good quality is expressed only when the adjustment value of the speed of the grinding machine is adjusted to the speed that is most productive for the work.

The present invention has been proposed to solve the problems of the prior art, and an object of the present invention is to selectively implement various polishing rates tailored to each work characteristic, thereby maximizing the polishing quality. It is to provide a small-sized polishing apparatus.

Another object of the present invention is to provide a multi-purpose multi-purpose small polishing apparatus in which the additional financial burden is offset because the speed is controlled and the cost is highly added by being multi-applied to various tasks.

Another object of the present invention is to provide a multi-purpose multi-small polishing apparatus that improves work efficiency, worker fatigue and financial cost reduction due to speed control and unchanging power for various tasks.

Another object of the present invention is to provide a multi-purpose multi-purpose small polishing apparatus that reduces the burden on users and reduces costs because the replacement cycle of the polishing machine is increased due to the improvement of durability due to the characteristics of the brush motor.

Another object of the present invention is to provide a multi-purpose multi-small polishing apparatus with improved quality of use by innovatively guaranteeing the quality of work by expressing the speed most suitable for various work places through a continuously variable transmission.

According to the present invention for achieving the object of the present invention as described above, there is provided a multi-purpose multi-small polishing apparatus comprising: a driving means having a driving motor configured to rotate a rotating shaft by receiving power; In a multi-purpose multi-purpose small polishing apparatus comprising; The driving means includes: the driving motor composed of a 'brushless direct current motor/BLDC motor'; and an encoder configured to receive the rotational force of the rotating shaft of the driving motor and transmit it to the grinding means.

The grinding means may include: a shift member configured to be axially coupled with the output shaft of the encoder to receive power and to shift to transmit power to the abrasive plate; and a rotating plate configured to rotate in the same direction as the abrasive plate is shaft-coupled to the lower portion by receiving the shifted rotational force through the shift member.

The shift member may include: a movable gear axially coupled to an output shaft of the encoder to rotate in the same direction; and a plurality of driven gears each gear-coupled with the same gear ratio as the center of the movable gear and shaft-coupled to the lower portion so that the rotating plate rotates in the same direction.

The driving means may further include a driving housing having the driving motor on its upper portion and an output shaft of the encoder configured to receive and output the rotational force generated from the driving motor therein; The abrasive means is detachable from the lower portion of the driving housing and is shaft-coupled with the output shaft of the encoder therein to receive power and shift the speed to transmit power to the abrasive plate. It is characterized in that it comprises a; abrasive housing to be transmitted and rotated, the abrasive plate is shaft-coupled to the lower portion, the rotating plate is arranged to rotate in the same direction.

The multi-purpose multi-small polishing apparatus according to the present invention made as described above can be adjusted to a desired speed even under a fixed 3kw condition with a Korean household outlet capacity through a drive motor to which a brushless structure is applied, so that it can be customized according to each work characteristic As various polishing rates can be selectively implemented, the use efficiency is maximized.

In addition, as the desired output is continuously output through the drive motor to which the encoder structure is applied, constant power is supplied to each of various tasks, thereby significantly reducing work efficiency and worker fatigue and financial cost reduction for long hours of work have

In addition, the replacement cycle of abrasive parts is increased through the drive motor to which the brushless structure is applied, thereby realizing economic benefits through cost reduction.

In addition, it has the effect of improving the work quality by expressing the speed most suitable for various work places through the continuously variable speed structure of the speed change member.

As described above, instead of carrying out the grinding work by raising the weight in the conventional grinding apparatus, the work of grinding the base material is performed by accelerating the speed by 5 times or more to a suitable weight suitable for the grinding work. It has the effect of maximizing the function of the small grinding device by realizing the most optimized speed for the grinding work, which is reduced and the grinding speed is also expressed more than twice.

1 and 2 are schematic perspective views showing a multi-purpose multi-purpose small polishing apparatus according to an embodiment according to the present invention.
Figure 3 is a schematic side view showing the driving means constituting the multi-purpose multi-small polishing apparatus according to the present embodiment.
4 to 6 are schematic exemplary views showing driving means constituting the multi-purpose multi-small polishing apparatus according to the present embodiment.
7 to 10 are schematic exemplary views showing a polishing means constituting a multi-purpose multi-small polishing apparatus according to the present embodiment.
11 to 13 are schematic exemplary views showing the working state of the pore means and the polishing means constituting the multi-purpose multi-small polishing apparatus according to the present embodiment.
14 to 17 are schematic views showing another example of a polishing means constituting a multi-purpose multi-small polishing apparatus according to the present embodiment.

Hereinafter, with reference to the accompanying drawings, a multi-purpose multi-small polishing apparatus according to a preferred embodiment of the present invention will be described in detail as follows.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This embodiment is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shapes of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. Detailed descriptions of well-known functions and configurations determined to unnecessarily obscure the gist of the present invention will be omitted.

1 to 13 are views showing a multi-purpose multi-small polishing apparatus 1 according to an embodiment according to the present invention. The multi-purpose multi-purpose small polishing apparatus 1 according to this embodiment is supplied with power to rotate the rotating shaft. a drive means (2) having a drive motor (21) adapted to rotate; and a grinding means (3) having an abrasive plate (31) configured to rotate by receiving the rotational force of the rotating shaft of the driving motor (21).

That is, the abrasive plate 31 of the grinding means 3 receives the rotational force generated by the driving of the driving motor 21 and rotates to perform the grinding operation through friction with the work surface to be polished.

In the lower surface of the abrasive plate 31, a plurality of abrasive pieces (not shown) formed with a plurality of abrasive protrusions (not shown) to form friction and impact load with the working surface on the bottom surface can be mounted as; The structure of the abrasive plate 31 is preferably a structure selected by a user in a conventionally known technique.

The multi-purpose multi-small polishing apparatus 1 according to this embodiment is shaft-coupled so that the driving means 2 and the polishing means 3 are rotatably up and down and the user can hold the handle 41 by hand. ) provided with a polishing body (4); may be made to further include; The abrasive body 4 may be provided with moving wheels 42 that are shaft-coupled to be idling so as to be able to travel by rolling motion with respect to the floor.

That is, the user holds the handle 41 of the polishing body 4 by hand and grinds the work surface while simply driving the floor through the moving wheels 42 .

In the above, the polishing body 4 may be provided with a control means (including a manipulator/not shown) configured to control the power supply to the driving motor 21 .

In the multi-purpose multi-small polishing apparatus 1 according to the present embodiment made as described above, the driving means 2 includes the driving motor 21 comprising a 'brushless direct current motor/BLDC motor'; and an encoder (22) configured to receive the rotational force of the rotating shaft (not shown) of the driving motor 21 and transmit it to the grinding means (3).

That is, as the drive motor 21 has a 'brushless motor' structure and a 'encoder' structure respectively applied, it is possible to adjust the desired speed even in the 3kw condition fixed to the domestic household outlet capacity in Korea, so each desired operation As it is possible to selectively implement various polishing rates customized according to characteristics, the use efficiency is maximized.

In addition, as the desired output is continuously output through the driving state by the encoder 22, constant power (grinding speed and grinding torque) is supplied to each of various tasks to improve work efficiency and worker fatigue In addition to significantly reducing cost and financial cost, the replacement cycle of consumable parts is increased through the driving state of the 'brushless motor' structure, thereby realizing economic benefits through cost reduction.

In the driving means 2, the driving motor 21 is provided on the upper part, and the output shaft 23 of the encoder 22 is arranged to receive and output the rotational force generated from the driving motor 21 therein. It is made to further include a driving housing (24).

That is, it facilitates the arrangement of the driving motor 21 and the encoder 22 through the driving housing 24, as well as the stability of the output shaft 23 of the encoder 22 not exposed to the outside. will secure

In addition, it can be configured to selectively attach and detach a plurality of weights 5 made of a 'heavy object' on the upper part of the driving housing 24, so that a weight load to the abrasive plate 31 is applied during polishing. By offsetting the repulsive load caused by friction with the working surface, the grinding operation can be made more stable.

In addition, it is possible to design the driving housing 24 to be shaft-coupled to the polishing body 4 , thereby promoting structural convenience according to the design.

In the multi-purpose multi-small polishing apparatus 1 according to the present embodiment made as described above, the polishing means 3 is shaft-coupled with the output shaft 23 of the encoder 22 to receive power and change the speed for the polishing. a shift member 32 configured to transmit power to the plate 31; and a rotating plate 33 configured to rotate in the same direction as the abrasive plate 31 is shaft-coupled to the lower portion to be rotated by receiving the shifted rotational force through the shift member 32 .

That is, by rotating the rotating plate 33 by increasing and decelerating the rotational force transmitted from the output shaft 23 of the encoder 22 to a desired speed through the shift member 32, The desired rotation speed is realized.

In the above, the grinding means 3 is attached to and detached from the lower part of the driving housing 24 and is axially coupled with the output shaft 23 of the encoder 22 to receive power and shift the power to the abrasive plate 31 . The shift member 32 to transmit and rotates by receiving the rotational force shifted through the shift member 32, and the abrasive plate 31 is shaft-coupled to the lower portion to rotate in the same direction. ) in which the abrasive housing 34 is disposed; may be made to further include.

That is, as the shift member 32 and the rotary plate 33 are disposed inside the polishing housing 34 so as not to be exposed to the outside, safety is secured.

In addition, since the grinding housing 34 is selectively attached to and detached from the driving housing 24, the various grinding means 3 to which the shifting member 32 and the rotating plate 33 having various structures are applied respectively. Each can be applied by the user's selection.

Accordingly, as it is possible to selectively implement various polishing operations tailored according to each operation characteristic, the use efficiency is maximized.

Meanwhile, the shift member 32 includes: a movable gear 321 axially coupled to the output shaft 23 of the encoder 22 to rotate in the same direction; A plurality of driven gears 322, each gear-coupled with the same gear ratio as the center of the movable gear 321, and shaft-coupled to each other so that the rotating plate 33 rotates in the same direction at the lower portion; may include; .

That is, the movable gear 321, which rotates in conjunction with the output shaft 23 of the encoder 22, rotates the driven gears 322, respectively, to rotate the rotating plate 33, so that the abrasive plate 31 is The work surface will be polished.

As described above, the speed most suitable for various work places is expressed through the 'stepless speed change' structure of the shift member 32, thereby improving work quality.

In addition, as the rotary plates 33 are shifted while rotating on the same axis as the output shaft 23 of the encoder 22, a polishing speed and a polishing torque optimized for polishing as well as polishing are implemented.

The driven gear 322 in the above, is made of a set of three, which can be polished while dividing the working space of the grinding housing 34 into three, it is preferable to be applied according to the user's choice.

In the center of the grinding housing 34, the movable gear 321 is shaft-coupled to be idling; A fixed plate 35 to which the driven gears 322 are shaft-coupled to be idling may be provided therein.

That is, the driven gears 322 are shaft-coupled to the fixed plate 35 , and each of the rotating plates 33 and the abrasive plate 31 are disposed on the abrasive housing 34 .

As described above, the multi-purpose multi-small polishing apparatus 1 according to this embodiment grinds the base material by accelerating the speed by 5 times or more to an appropriate weight suitable for the polishing operation, rather than performing the polishing operation by raising the weight in the conventional polishing apparatus. As the work is performed, the function of the small grinding device is maximized by implementing the most optimized speed for the grinding work, in which the fatigue of the operator is innovatively reduced and the grinding work speed is also expressed more than twice.

14 to 17 are views showing another example of the polishing means 3 constituting the multi-purpose multi-small polishing apparatus 1 according to the present embodiment, wherein the fixing plate 35 includes the polishing housing 34 ) is provided rotatably around the center of rotation of the movable gear 321 in the interior; The abrasive housing 34 may be provided with ring gears 36 geared to each other from the outside of the driven gears 322 .

That is, while the driven gear 322 receives the rotational force of the movable gear 321 and rotates on the fixed plate 35 , the driven gear 322 travels around the inner peripheral surface of the ring gear 36 . , the fixed plate 35 rotates around the movable gear 321 .

Accordingly, each of the rotary plate 33 and the abrasive plate 31 is axially rotated and the working surface is polished while revolving inside the abrasive housing 34 at the same time.

Accordingly, as the working space of the polishing housing 34 is evenly polished, polishing efficiency is improved.

One embodiment of the present invention described above is merely exemplary, and those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications and equivalent other embodiments are possible therefrom. . Therefore, it will be well understood that the present invention is not limited to the form mentioned in the above detailed description. Therefore, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims. Moreover, it is to be understood that the present invention covers all modifications, equivalents and substitutions falling within the spirit and scope of the invention as defined by the appended claims.

1: grinding device 2: driving means
21: drive motor 22: encoder
23: output shaft 24: drive housing
3: grinding means 31: grinding plate
32: shift member 321: movable gear
322: driven gear 33: rotary plate
34: abrasive housing 35: fixed plate
36: ring gear 4: grinding body
41: handle 42: moving wheel
5: weight

Claims (4)

a driving means having a driving motor configured to rotate the rotating shaft by receiving power; In a multi-purpose multi-small polishing apparatus comprising a; grinding means having an abrasive plate rotated by receiving the rotational force of the rotating shaft of the driving motor,
The driving means is
The drive motor comprising a 'brushless direct current motor/BLDC motor'; and an encoder configured to receive the rotational force of the rotating shaft of the driving motor and transmit it to the polishing means. The method of claim 1,
The grinding means,
a shift member configured to be shaft-coupled with the output shaft of the encoder to receive power to shift and to transmit power to the abrasive plate; and a rotating plate that is rotated by receiving the shifted rotational force through the shift member, and the abrasive plate is shaft-coupled to the lower portion to rotate in the same direction. 3. The method of claim 2,
The shift member is
a movable gear axially coupled to the output shaft of the encoder to rotate in the same direction; and a plurality of driven gears each gear-coupled with the same gear ratio as the center of the movable gear and shaft-coupled to the lower portion so that the rotating plate rotates in the same direction. The method of claim 1,
The driving means is
a driving housing provided with the driving motor on the upper portion and having an output shaft of an encoder configured to receive and output the rotational force generated from the driving motor therein;
The grinding means,
It is detachably attached to the lower part of the drive housing and is shaft-coupled with the output shaft of the encoder therein to receive power to shift and to transmit power to the abrasive plate. A multi-purpose multi-purpose small polishing apparatus comprising a; a polishing housing in which the abrasive plate is shaft-coupled to the lower portion and a rotating plate configured to rotate in the same direction is disposed.

Images