KR102628016B1 - Operating method for grinding device comprising main tray and auxiliary tray each rotating - Google Patents

Abstract

In a method of operating a polishing device including a tray including a main tray and a plurality of auxiliary trays according to various embodiments of the present disclosure, and a polishing pad unit configured to polish an article placed on the tray, the method includes the polishing Measuring the height of an item placed on each of the plurality of auxiliary trays by moving the pad unit up and down; determining whether a difference in height of items placed on each of the plurality of auxiliary trays is less than or equal to a threshold value; If the height difference is less than or equal to a threshold, performing a polishing operation and if the height difference is greater than or equal to the threshold, outputting a notification. Various other embodiments are possible.

Description

A method of operating a grinding device including a main tray and an auxiliary tray each rotating {OPERATING METHOD FOR GRINDING DEVICE COMPRISING MAIN TRAY AND AUXILIARY TRAY EACH ROTATING}

The present disclosure relates to an operating method for a polishing device including a main tray and an auxiliary tray, each of which rotates.

In general, there are various methods and devices for polishing devices that can polish metals or non-ferrous metals.

As a general polishing device, a hand grinder or polishing device weighs approximately 8 to 9 kg and grinds the abrasive provided at the tip by holding a thin handle at the tip and applying appropriate pressure to the polishing object (part) made of the metal or non-ferrous metal. It is done. However, the weight of the above-described polishing device is so heavy that when the polishing object is large, there is a problem that workers holding it with both hands easily get tired and complain of fatigue.

In addition, a polishing device is being introduced that fixes the polishing material on a stand and mechanically pressurizes the polishing pad to enable automatic polishing. However, such a polishing device is difficult to apply adaptively to parts of various types and sizes, so there is a problem in that providing such a polishing device has low economic utility except in cases where a huge amount of mechanical polishing is required.

As a means of solving the above-described problems, the present disclosure seeks to provide a method of operating a polishing device that is adaptively applicable to parts of various sizes and types, including a main tray and an auxiliary tray that each rotate.

Specifically, the present disclosure provides a method of operating a polishing device that installs a plurality of auxiliary trays, each rotating on a rotating main tray, and polishes small parts mounted on the auxiliary trays at a faster speed and evenly on all surfaces. We would like to provide.

In addition, the present disclosure seeks to provide a method of operating a polishing device in which the auxiliary tray is removable from the main tray, when attaching and removing the auxiliary tray.

The technical problem to be achieved in this document is not limited to the above-mentioned technical problem, and other technical problems not mentioned can be clearly understood by those skilled in the art from the description below. .

In a method of operating a polishing device including a tray including a main tray and a plurality of auxiliary trays according to various embodiments of the present disclosure, and a polishing pad unit configured to polish an article placed on the tray, the method includes the polishing Measuring the height of an item placed on each of the plurality of auxiliary trays by moving the pad unit up and down; determining whether a difference in height of items placed on each of the plurality of auxiliary trays is less than or equal to a threshold value; If the height difference is below a threshold, performing a polishing operation, and if the height difference is above the threshold, outputting a notification.

In a method of operating a polishing apparatus according to various embodiments of the present disclosure, the plurality of auxiliary trays are arranged in a polar array on the main tray at regular intervals relative to the center of the main tray, and the polishing The step of measuring the height of an article placed on each of the plurality of auxiliary trays by moving the pad unit up and down includes: When the polishing pad unit completes the up and down movement to measure the height of the item placed on one of the plurality of auxiliary trays, The method may include rotating the main tray to move another auxiliary tray to the position where the polishing pad unit is located. =

In a method of operating a polishing device according to various embodiments of the present disclosure, the rotating pole of each of the auxiliary trays is configured to be inserted into an opening provided on the upper surface of the main tray, and the main tray includes a circular top plate and a planetary machine. It includes a fisherman and a rotary ring, wherein the planetary gear part is interposed between the circular top plate and the rotary ring, and the planetary gear part is interposed between a sun gear, a ring gear, and the sun gear and the ring gear, and is connected to the rotary ring. It may include a plurality of planetary gears, where revolution of the plurality of planetary gears with respect to the sun gear may be rotation of the main tray, and rotation of each of the plurality of planetary gears may be rotation of each of the plurality of auxiliary trays.

In a method of operating a polishing apparatus according to various embodiments of the present disclosure, the plurality of auxiliary trays are detachable from the main tray, and the method includes sending a signal indicating that the plurality of auxiliary trays have been removed from the tray. Receiving; When receiving a signal indicating that the plurality of auxiliary trays have been removed, the polishing pad unit moves up and down every time the main tray rotates at a certain angle to maintain the horizontality of the article placed on the main tray. Additional confirmation steps may be included.

In a method of operating a polishing device according to various embodiments of the present disclosure, one of the rotation ring, the ring gear, and the sun gear connected to the plurality of planetary gear units is fixed, rotation power is connected to the other one, and the last one is connected to the plurality of planetary gear units. It may further include changing the rotational speed and torque of the main tray by connecting to the main tray as an output.

1 is a perspective view of a polishing device according to various embodiments of the present disclosure.
2 is a perspective view of a tray according to various embodiments of the present disclosure.
Figure 3 is an exploded perspective view of a tray according to various embodiments of the present disclosure.
Figure 4 is a top plan view of a planetary gear of a tray according to various embodiments of the present disclosure.
5 is a cross-sectional side view of a polishing device according to various embodiments of the present disclosure.
6 is a flowchart showing a process for operating a polishing device according to various embodiments of the present disclosure.

The various embodiments of this document and the terms used herein are not intended to limit the technical features described in this document to specific embodiments, and should be understood to include various changes, equivalents, or replacements of the embodiments. In connection with the description of the drawings, similar reference numbers may be used for similar or related components. The singular form of a noun corresponding to an item may include one or more of the above items, unless the relevant context clearly indicates otherwise. In this document, “A or B,” “at least one of A and B,” “at least one of A or B,” “A, B, or C,” “at least one of A, B, and C,” and “A. Each of phrases such as “at least one of , B, or C” may include any one of the items listed together in the corresponding phrase, or any possible combination thereof. Terms such as "first", "secondary", or "first" or "second" may be used simply to distinguish one element from another and may be used to distinguish such elements in other respects, such as importance or order) is not limited.

According to various embodiments, each of the above-described components may include a single or plural entity. According to various embodiments, one or more of the components or operations described above may be omitted, or one or more other components or operations may be added. Alternatively or additionally, multiple components may be integrated into one component. In this case, the integrated component may perform one or more functions of each component of the plurality of components in the same or similar manner as those performed by the corresponding component of the plurality of components prior to the integration. .

1 is a perspective view of a polishing device according to various embodiments of the present disclosure. 2 is a perspective view of a tray according to various embodiments of the present disclosure. Figure 3 is an exploded perspective view of a tray according to various embodiments of the present disclosure. Figure 4 shows a top plan view of a planetary gear in a tray according to various embodiments of the present disclosure.

The polishing device 10 according to the present disclosure is a device that can simultaneously polish or polish a plurality of articles of various sizes. This polishing device 10 may include a housing 100, a tray 200, and a polishing pad unit 130.

In one embodiment, the housing 100 may provide a space in which each component of the polishing apparatus 10 including the tray 200 and the polishing pad unit 130 of the present disclosure can be seated. The housing 100 may include various shapes that can be adopted by those skilled in the art as long as the components of the polishing device 10 can be stably seated thereon. In one embodiment, housing 100 may include a lower housing 110 and an upper housing 120. The lower housing 110 is equipped with the tray 200 and the polishing pad unit 130 and may be configured to withstand force and vibration generated when the polishing device 10 is operated. The upper housing 120 provides a space in which the tray 200 and the polishing pad unit 130 are seated, and prevents dust and particles generated when the polishing device 10 is operated from flying out. You can. A portion of the upper housing 120 may be made of a transparent material so that the operating state of the polishing device 10 can be confirmed. A portion of the upper housing 120 may be configured to be open and closed so that the inside is open for mounting and removal of an article as a polishing target mounted on the tray 200, or replacement of a polishing pad from the polishing pad unit 130. there is.

In one embodiment, the tray 200 may include a main tray 210 and an auxiliary tray 220. Hereinafter, the main tray 210 may be referred to as a first tray 210, and the auxiliary tray 220 may be referred to as a second tray 220.

Referring to FIG. 2 , the first tray 210 may be configured to rotate with respect to the housing 100 (or the lower housing 110). The first tray 210 may rotate around the first central axis 211 .

In one embodiment, a plurality of second trays 220 may be arranged on the first tray 210 . The plurality of second trays 220 may be arranged to have an equal angle with respect to the rotation center axis 211 of the first tray 210. In other words, the plurality of second trays 220 may be arranged in a polar-array with the first central axis 211 as a reference. In the illustrated example, four second trays 220 are disposed on the first tray 210, but two, three, or five or more second trays 220 are disposed on the first tray 210. It could be.

In one embodiment, the second tray 220 may be installed on the first tray 210 to be rotatable with respect to the first tray 210 . The second tray 220 may be configured to rotate in a direction opposite to the rotation direction of the first tray 210.

In one embodiment, a drive unit for rotating the first tray 210 and/or the second tray 220 may be connected to the tray 200, and the first tray 210 and the second tray 220 may be connected to the tray 200. The rotation mechanism will be described later.

In one embodiment, the second tray 220 may be installed to be detachable from the first tray 210 . Figure 2(a) shows the second tray 220 attached to the first tray 210, and Figure 2(b) shows at least the second tray 220 attached to the first tray 210. A partially detached state may be shown.

In the example of FIG. 2 , the first tray 210 may have a second central axis 221 arranged with respect to the first central axis 211 . The second central axis 221 may be arranged to have an equal angle with respect to the first central axis 211 of the first tray 210 depending on the number of second trays 220. In other words, the plurality of second central axes 221 may be polar-arrayed at equal intervals with respect to the first central axis 211. For example, when three second trays 220 are arranged based on the center of the first tray 210, the centers of each of the second trays 220 are relative to the center of the first tray 220. It can be arranged to have an interval of 120 degrees.

In one embodiment, the first tray 210 may have an opening 212 at a position corresponding to the second central axis 221. The second rotating pole 222 may be inserted into the opening 212 provided in the first tray 210. The second rotation pole 222 may be connected to the center of the second tray 220. The second rotation pole 222 may rotate about the second axis 221 with respect to the first tray 210 to rotate the second tray 220 .

In one embodiment, the second rotation pole 222 may be configured to move in the axial direction with respect to the first tray 210. The second rotating pole 222 may protrude beyond the upper surface of the first tray 210 and be connected to the second tray 220. When the second tray 220 is detached, the second rotation pole 222 may be further inserted into the opening 212 so as not to protrude beyond the upper surface of the first tray 210. In some embodiments, the second rotating pole 222 may be discharged from the opening 212 together with the second tray 220 and completely removed from the first tray 210.

In the embodiments provided by the present disclosure, when the second tray 220 is attached to the first tray 210, various types of small parts can be placed on the second tray 220. Since both the first tray 210 and the second tray 220 can rotate, the polishing pad can be rubbed evenly on all surfaces at a faster speed for small parts mounted on the second tray 220. there is.

Additionally, when the second tray 220 is removed from the first tray 210, larger parts can be placed on the first tray 210 and polished. That is, the embodiments provided by the present disclosure can enable polishing of articles of various sizes.

In one embodiment, each of the first tray 210 and the second tray 220 may be provided with a fixing means for holding an article. For example, the first tray 210 and the second tray 220 have at least one chuck or clamp so that any article can be fixed, or a part of the article can be inserted and fixed. It may include a mold with a recessed shape. In this way, the fixing means can prevent items from being separated due to centrifugal force caused by rotation of the first tray 210 and the second tray 220.

Referring again to FIG. 1, the polishing pad unit 130 includes a rotary unit 131 and a detachable polishing pad 132 below the rotary unit 131, and an arm (arm) connecting the rotary unit 311 to the housing 100. 130) may be included.

The rotating part 311 is installed to be rotatable with respect to the arm 133. The arm 133 may be extended so that the rotating part 311 and the polishing pad 132 overlap at least a portion of the tray 200 when viewed from above. The rotating part 311 is configured to move up and down with respect to the arm 133, allowing the polishing pad 132 to come into contact with or separate from the items placed on the tray 200. As the rotating unit 311 moves up and down, the force with which the polishing pad 132 presses the article mounted on the tray 200 can be controlled.

The polishing pad 132 may vary depending on the material of the article mounted on the tray 200, the degree of polishing, etc., and may be attached and detachable from the rotating unit 311 and replaced as needed. Any polishing pad 311 may be used as long as it can polish the article, and a wool pad may be used to provide a shine.

In one embodiment, the polishing pad unit 130 may include a driving unit for rotating the rotating unit 131 and moving it up and down. For example, the drive unit may be built into the arm 133. The driving unit of the polishing pad unit 130 operates separately from the driving unit for rotating the tray 200, so that the rotation of the polishing pad 132 and the rotation of the tray 200 operate at different speeds and in different cycles. You can. For example, the polishing pad 132 and the tray 200 may be controlled to rotate at an appropriate speed depending on the type of article placed on the tray 200 and the purpose of polishing.

In one embodiment, the abrasive spray unit 140 may be provided on one side of the housing 100 or the polishing pad unit 130 and configured to spray an abrasive to more easily and stably polish the portable terminal. there is. It is best to use an abrasive that is in a liquid form and can reduce frictional heat generated during polishing and simultaneously serve as a lubricant to facilitate polishing. The abrasive spray unit 140 may include a spray nozzle configured to spray directly onto the polishing pad 132 or the article mounted on the tray 200. The abrasive spray unit 140 may include an abrasive tank that stores the abrasive, and a supply passage connected between the abrasive tank and the nozzle, and may further include a control unit that controls the abrasive to be automatically sprayed.

In one embodiment, the polishing apparatus 10 may include a control unit (not shown) configured to control the tray 200, the polishing pad unit 130, and the abrasive spray unit 140 included in the polishing apparatus 10. You can. The housing 100 of the polishing device 10 may include an interface unit 101 to allow a user to control the polishing device 10.

Figure 3 is an exploded perspective view of a tray according to various embodiments of the present disclosure. Figure 4 shows a top plan view of a planetary gear in a tray according to various embodiments of the present disclosure. Hereinafter, the rotation mechanism of the tray 200 according to various embodiments of the present disclosure will be described with reference to FIGS. 3 and 4.

Referring to FIG. 3 , the first tray 210 may include a circular top plate 310, a planetary gear unit 320, and a rotating ring (or planetary carrier) 330. A second tray 220 may be installed on the circular top plate 310 or a large article to be polished may be mounted. The planetary gear unit 320 can transmit power so that the first tray 210 and the second tray 220 rotate. The planetary gear unit 320 may be disposed below the circular top plate 310. A rotating ring 330 may be disposed below the planetary gear unit 320. The rotating ring 330 and the circular upper plate 310 are fixed to each other, and the planetary gear unit 320 may be interposed between the circular upper plate 310 and the rotating ring 330.

Referring to Figures 3 and 4, in one embodiment, the planetary gear unit 320 includes a sun gear 420 rotatably coupled to the first rotation pole 410 and a gear formed on the outer peripheral surface, and a sun gear A ring gear 430 is disposed at a certain distance from the outer peripheral surface of 420 and has a gear formed on the inner peripheral surface, and is provided between the ring gear 430 and the sun gear 420 and is connected to the ring gear 430 and the sun gear 420. It may include a plurality of planetary gears 440 that engage and rotate and rotate with respect to the sun gear 420.

In one embodiment, the first tray 210, the second tray 220, and the planetary gear unit 320 may be made of precision-machined metal. In addition, the first tray 210, the second tray 220, and the planetary gear unit 320 are made of heat-resistant industrial plastic (e.g., PPS (poly phenylene sulfide)), so they have good mechanical properties despite the heat generated during polishing. It can have strength.

In one embodiment, the sun gear 420 has a cylindrical shape, and a through hole 411 through which the first rotating pole 410 passes may be formed at the center. A first key 412 is provided between the sun gear 420 and the first rotation pole 410, and the sun gear 420 and the first rotation pole 410 can be fixed by the first key 412. there is.

In one embodiment, the ring gear 430 has a ring shape, and the gear formed on the inner peripheral surface may be a gear that meshes with the planetary gear 440. In one embodiment, a fixing means that prevents the ring gear 430 from rotating may be coupled to the peripheral area of the ring gear 430. For example, at least two or more bolts may be installed in the peripheral area of the ring gear 430 to secure the ring gear 430 to the lower housing 110. When the planetary gear unit 320 operates, the ring gear 430 may not rotate, unlike the sun gear 420 and the planetary gear 440.

In the illustrated example, there are four planetary gears 440 engaged with the ring gear 430 and the sun gear 420, and the planetary gears 440 and the sun gear 420 may have a constant inter-axis distance. In various embodiments, the planetary gears 440 may have various numbers.

The planetary gear 440 has a cylindrical shape, and a gear that meshes with the sun gear 420 is formed on the outer peripheral surface. Additionally, a through hole 441 through which the second rotating pole 222 penetrates may be formed in the center of the planetary gear 440. A second key 442 may be provided between the planetary gear 440 and the second rotating pole 222, and the planetary gear 440 and the second rotating pole 222 are connected together by the second key 442. It can be linked to rotate. The second rotation pole 222 may penetrate the opening 212 formed in the circular upper plate 310 (or the first tray 210) of the planetary gear 440, and the second rotation pole 222 The upper end is fixed to the second tray 220 and the second tray 220 can also be rotated by rotation of the second rotation pole 222.

The rotating ring 330 may have a ring or donut shape with an opening 331 at the center. The rotation ring 330 may include a rotation fixing shaft 332 and a rotation groove 333. The rotation fixing shaft 332 may be provided in a portion that does not interfere with the operation of the planetary gear 440 when the planetary gear unit 320 is viewed from above. The lower end of the rotation fixing shaft 332 may be fixed to the rotation ring 330, and the upper end may be fixed to the rotating top plate 310. Rotation of the rotation ring 330 may be connected to the rotation top plate 310 by the rotation fixing shaft 332.

The rotation groove 333 may be fitted with the lower end of the second rotation pole 222 that has passed through the through hole 441 of the planetary gear 440. The second rotation pole 222 is partially inserted into the rotation groove 333 and can be rotated by the planetary gear 440. The second rotation pole 222 may penetrate the opening 212 of the rotating top plate 310 and rotate the second tray 220 at a speed different from the rotation of the rotating top plate 310 through its own rotation. In one embodiment, the rotation groove 333 may be formed so that the second rotation pole 222 completely penetrates the rotation ring 330. In this embodiment, the second rotation pole 222 is a rotation groove ( 333) and may be configured to move downward based on the second rotation axis 221. The second rotation pole 222 may move downward so that it does not protrude from the upper surface of the rotation top 310 (or the first tray 210). A large item can be placed on the upper surface of the rotating top plate 310 on which the second tray 220 is not installed, and the mounted large item can be polished.

With this configuration, the first tray 210 rotates at the same time as power is transmitted to the sun gear 420 by the first key 412 when the first rotation pole 410 is rotated, and the sun gear 420 ), the planetary gear 440 can rotate and rotate with respect to the ring gear 430 fixed to the sun gear 420. The rotation and revolution of the planetary gear 440 may have different speeds and directions. The rotation speed and direction of the planetary gear 440 may be the rotation speed and direction of the second rotation pole 222 and/or the second tray 220 connected to the second rotation pole 222. The revolution speed and direction of the planetary gear 440 may be the rotation speed and direction of the rotation ring 330 and the rotation top plate 310 (or the first tray 210) fixed to the rotation ring 330.

In one embodiment of the present disclosure, the polishing device 10 includes a first tray 210 with a planetary gear mechanism, so that the first tray 210 rotates and is installed on the first tray 210, and other By implementing a plurality of second trays 220 that rotate at different speeds and directions, it is possible to polish items of various sizes evenly on all surfaces at a faster speed. In addition, the planetary gear mechanism can add strong rotational force (torque or momentum) to the first tray 210 and the second tray 220, so that a constant speed is achieved despite the friction between the article and the polishing pad 132 during the polishing process. It can be rotated, which has the effect of improving polishing speed or achieving uniformity of quality.

The rotational speed and torque of the first tray 210 and the second tray 220 can be determined by Equation 1 below.

ω _r = rotation number of ring gear 430,

ω _s = rotation number of sun gear 420,

ω _c = rotation number of the rotating ring 330, and

ρ=Number of teeth of sun gear (420)/Number of teeth of ring gear (430).

Additionally, the rotation speed of the planetary gear 440 may be determined according to the ratio of the number of teeth of the sun gear 420 and the number of teeth of the planetary gear 440.

According to Equation 1 above, assuming that the number of teeth of the sun gear 420 is 30 and the number of teeth of the ring gear 430 is 78, ω _c = 0.27777 * ω _s + 0.72222 * ω _r , and the ring gear ( 430), the number of rotations ω _r is 0, so ω _c = 0.27777 * ω _s . In another example, the ring gear 430 is allowed to rotate, and the rotating ring 330 can be fixed, in which case ω _s = -2.6 * ω _r .

In a representative embodiment in which the ring gear 430 is fixed, the rotating ring 330 (and the first tray 210) may preferably rotate at 120 rpm, and the planetary gear 440 (or the second tray) (220)) may preferably rotate at 60 rpm. At this time, the rotation speed of the rotation pad 132 may range from 100 rpm to 300 rpm.

The rotation speed of the first tray 210 and/or the second tray 220 can be adaptively changed to the rotation speed of the polishing pad 132, and the rotation speed of the polishing pad 132 can also be changed independently. do.

The rotation speed of the first and second trays 210 and 220 and the polishing pad 132 may be determined depending on the material of the product mounted on the first tray 210 and/or the second tray 220 or the purpose of polishing. . In general, when the purpose of polishing is to smooth the surface of the mounted product, the tray may be configured to rotate at a slower speed than when polishing the product. Alternatively, if the material of the product being mounted is vulnerable to heat, the rotation speed of the first and second trays 210, 220 and the polishing pad 132 may be configured to be relatively slow, and if the material is heat-resistant, the rotation speed may be high. It can be configured to do so.

In another embodiment, the first tray 210 and the second tray 220 installed on the first tray 210 are operated by mechanisms such as pulleys and belts as well as the planetary gear mechanism described above. It can rotate. Specifically, pulleys are installed on the rotation axis of the first tray 210 (for example, the first rotation pole 410) and the rotation axis of the second tray 220 (for example, the second rotation pole 222). And, by connecting the belt connected to the corresponding pulley drive unit (eg, motor), the first tray 210 and the second tray 220 can be rotated in different directions and speeds.

In addition, in the planetary gear unit 320 of the above-described embodiment, the ring gear 430 is fixed, the sun gear 420 inputs, and the rotation ring 330, which is synchronized with the revolution of the planetary gear 440, is connected to the first tray. Although the output is set to rotate 210, in another embodiment, one of the sun gear 420, the ring gear 430, and the rotating ring 330 connected to the planet gear 440 is fixed and one of the other two is fixed. It can be input or output, allowing adjustment of various transmission ratios (up to 6 types). In another embodiment, the polishing device 10 fixes one of the sun gear 420, the ring gear 430, and the rotating ring 330 connected to the planet gear 440 and determines the other two as input or output. It may further include a transmission gear. .

In other words, one of the rotation ring 330, the ring gear 430, and the sun gear 420 connected to the plurality of planetary gears 440 is fixed, rotation power is connected to the other one, and the last one is used as an output. By connecting to the first tray 210, the rotational speed and torque of the first tray 210 can be changed.

In another embodiment, the polishing device 10 fixes one of the sun gear 420, the ring gear 430, and the rotating ring 330 connected to the planet gear 440 and determines the other two as input or output. It may further include a transmission gear.

5 is a cross-sectional side view of a polishing device according to various embodiments of the present disclosure.

Referring to FIG. 5 , the polishing pad unit 130 may include a rotating portion 131 and a polishing pad 132 detachably attached below the rotating portion 131 . The polishing pad unit 130 may be arranged to cover a portion of the first tray 210 when viewed from above. The polishing pad unit 130 may be positioned to completely cover one of the plurality of second trays 220 disposed on the first tray 210 when viewed from above.

The polishing pad unit 130 may be configured to move up and down. For example, the rotating part 131 may be configured to move up and down with respect to the arm 133.

The polishing pad unit 130 may be configured to detect the height of the item placed on the tray when the rotating part 131 or the polishing pad 132 moves downward, thereby detecting the height of the item placed on the tray. To this end, the polishing pad unit 130 may include a height sensor or a pressure sensor. The pressure sensor included in the polishing pad unit 130 may be configured to detect pressure (or pressure above a certain value) generated when the polishing pad 132 comes into contact with an article placed on a tray. The polishing pad unit 130 can identify the height of the mounted item according to the detection result of the pressure sensor. The polishing pad unit 130 may be configured to immediately raise the rotating unit 131 and the polishing pad 132 while identifying the height of the article according to the detection result of the pressure sensor, and through this, the polishing pad unit 130 Damage to items due to falling can be prevented.

In one embodiment, a plurality of second trays 220 are installed on the tray 200, and the polishing pad unit 130 moves up and down with respect to each of the plurality of second trays 220, so that the second tray 220 ) It can be configured to measure the height of the item mounted on each.

In the example shown in FIG. 5, let's explain using an example in which two second trays 220a and 220b are installed on the first tray 210. After measuring the height (h1) of the article 501 placed on the second tray 220a by moving the polishing pad 130 up and down with respect to the second tray 220a, the first tray 210 is rotated 180 degrees. By rotating, the second tray 220b may be positioned below the polishing pad unit 130. The polishing pad unit 130 moves up and down to measure the height (h2) of the article 502 placed on the second tray 220b, and then the articles 501, 502) height difference (h1-h2) can be calculated. If the height difference is less than or equal to the threshold value, it means that the articles 501 and 502 placed on the second trays 220a and 220b are properly placed, and thus the polishing device 10 can start the polishing process. As another example, assuming that four second trays 220 are installed, after measuring the height of the article placed on one second tray 220, the first tray 210 is tilted 90 degrees. The height of the item placed on another second tray 220 can be measured by rotating it.

For example, the threshold value of the height difference (h1-h2) may be determined according to the purpose of polishing, the tolerance input by the user, and/or the type of the polishing pad 132 of the soft pad portion 130. For example, in the case where the purpose of polishing is to smooth the rough surface of the mounted product and the height difference (h1-h2) is large because part of the product is sanded, the height of the products after the polishing process is completed is different. Cancellation issues may arise. Accordingly, the threshold value of the height difference (h1-h2) can be determined by the allowable tolerance. For example, the threshold value of the height difference may have a default value of 1 mm. As another example, the threshold value of the height difference may be determined to be a height of 0.1% or less of the total height of the product. As another example, the threshold value of the height difference may be determined by user input.

If the purpose of polishing is to polish the mounted product, the polishing pad 132 may be a wool pad, and in this case, the threshold value of the height difference (h1-h2) is the roughness of the mounted product. It may be greater than the threshold for smoothing the surface. For example, when the purpose of polishing is to shine the mounted product, the default threshold value can be 2 mm. For another example, the threshold may vary depending on the thickness or material of the polishing pad 132.

However, if the height difference exceeds the threshold, it may be determined that the articles 501 and 502 placed on the second trays 220a and 220b are improperly placed. In this case, the polishing device 10 ) may output a notification informing that the items placed on the second trays 220a and 220b are improperly placed. The output of the notification may include audio output, visual output, and tactile output. Here, the threshold may be determined based on the type, material, and size of the polishing pad and/or the article as the polishing target. The threshold value may be automatically set according to the characteristics of the polishing pad 132 on which the polishing device 10 is mounted, or the user may manually input it using an interface (eg, 101 in FIG. 1).

Unlike the example shown, in some embodiments, three second trays 220 may be installed on the first tray 210, and in this case, the first tray 210 is rotated 120 degrees, and the second tray 220 is rotated 120 degrees. The height of the item mounted on each tray 220 can be measured.

In one embodiment, when the second tray 220 is not installed on the tray 200 and an article to be polished is placed on the first tray 210, the degree of horizontality (or smoothness) with which the article is placed is determined. can be identified. For example, the first tray 210 rotates by a certain angle, and the polishing pad unit 310 moves up and down each time the first tray 210 rotates by a certain angle, so that the height of the article in the corresponding area increases. can be identified. '

If the difference in heights measured each time the first tray 210 rotates by a certain angle exceeds the threshold, it may be determined that the article placed on the first tray 210 is tilted. In this case, the polishing device 10 may output a notification notifying that the article placed on the first tray 210 is placed inappropriately, such as at an angle. The output of the notification may include audio output, visual output, and tactile output.

In another example, if the difference in heights measured each time the first tray 210 rotates by a certain angle is within the threshold, it means that the article placed on the first tray 210 is properly placed, The polishing device 10 may begin the polishing process.

As such, the polishing device according to various embodiments of the present disclosure may determine in advance whether the articles placed on the plurality of second trays 220 are properly placed before the polishing process. If the height difference between the items placed on the second tray 220 is large without this process, the highly protruding items may be subjected to strong force during the polishing process, causing a problem of the items protruding into the second tray 220. That is, the polishing device 10 according to various embodiments of the present application can simultaneously polish articles mounted on a plurality of trays and prevent unintended removal of the articles that may occur due to improper mounting of the articles. there is.

6 is a flowchart showing a process for operating a polishing device according to various embodiments of the present disclosure. Process 600 depicted in FIG. 6 may include one or more operations, functions, or actions as illustrated by blocks 810-840. Meanwhile, the schematic operations illustrated in FIG. 8 are provided as examples only, and without departing from the essence of the disclosed embodiment, some of the operations may be optional, may be combined into fewer operations, or may be expanded into additional operations. You can.

Referring to FIG. 6 , the polishing apparatus may start at step 610 where the polishing pad unit moves up and down to measure the height of the article placed on each of the plurality of second trays. Step 610 may repeat raising and lowering of the polishing pad unit depending on the number of second trays installed on the first tray.

In addition, in one embodiment, step 610 includes receiving a signal indicating that a plurality of second trays have been removed from the tray, and when receiving a signal indicating that the plurality of second trays have been removed, the first tray is moved at a certain angle. The method may further include checking the horizontality of the article placed on the first tray by moving the polishing pad unit up and down each time it rotates. Here, a signal indicating that the plurality of second trays has been removed from the tray may be received through a user's manual input through an interface or from a sensor installed in the first tray and detecting the installation of the second tray.

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Next, in step 620, the polishing device may determine whether the difference in height of the items placed on each of the plurality of second trays is less than or equal to a threshold value. The threshold may be determined based on the type, material, and size of the polishing pad and/or the article being polished. In one embodiment, step 620 may further include receiving a threshold value manually from the user.

The threshold value of the height difference may be determined depending on the purpose of polishing, the tolerance input by the user, and/or the type of polishing pad. For example, the threshold may have a default value of 1 mm, or may be set to no more than 0.1% of the total height of the mounted product. As another example, the threshold may be determined by user input, in which case the process 600 may further include receiving the threshold value through an interface included in the polishing device (e.g., 101 in FIG. 1). You can.

Next, in step 630, if the difference in height of the items placed on each of the plurality of second trays is less than or equal to a threshold value, a polishing operation may be performed, and if the difference in height is greater than or equal to the threshold value, a notification may be output in step 640. there is. The output of the notification may include audio output, visual output, and tactile output.

In one embodiment, after the notification is output in step 640 and the operation such as repositioning of the item by the user is completed, the process returns to step 610 and the step of measuring the height of the items placed on the tray again is performed. You can.

Meanwhile, in the detailed description of the present disclosure, specific embodiments have been described, but of course, various modifications are possible without departing from the scope of the present disclosure. Additionally, the embodiments described in FIGS. 1 to 6 can be combined within a range that can be easily derived by a person skilled in the art. Therefore, the scope of the present disclosure should not be limited to the described embodiments, but should be determined by the claims described below as well as equivalents to the claims.

Claims (5)

a housing including a lower housing and an upper housing installed to form a space of a certain size on top of the lower housing; A tray including a main tray rotatably installed on the upper surface of the lower housing in a horizontal direction and a plurality of auxiliary trays spaced apart from each other at a predetermined interval on the upper surface of the main tray and detachably installed with respect to the main tray; It includes a polishing pad unit installed to protrude from one side of the upper housing to polish the product mounted on the upper surface of the tray,
The polishing pad unit includes an arm that is fixed to the upper housing, extends to the top of the tray by a certain length, and is installed to be movable up and down with respect to the tray, and is rotatable in the horizontal direction at the front end of the arm, A rotating part installed to overlap at least a portion of the tray, a polishing pad detachably installed on the lower surface of the rotating part, a driving unit that moves the arm up and down and rotates the rotating part in a horizontal direction, and the polishing pad It includes an installed pressure sensor and a control unit electrically connected to the pressure sensor and controlling the driving unit;
The main tray includes a circular top plate with a plurality of openings formed in a radial direction (polar array) to allow the rotation pole of the auxiliary tray to pass through, a rotating ring installed to be spaced apart from the lower part of the circular top plate and having an opening formed in the center, and It includes a sun gear interposed between the circular top plate and the rotating ring, a ring gear, and a plurality of planetary gears provided between the ring gear and the sun gear, meshing with the ring gear and the sun gear, and rotating and revolving with respect to the sun gear. It includes a planetary gear unit that does;
The plurality of planetary gears are installed to be rotatable with each rotation pole partially inserted into a rotation groove formed on the rotation ring, and the rotation ring is fixed to the circular top plate at a predetermined interval through a plurality of rotation fixing axes, A plurality of auxiliary trays are connected to the plurality of planetary gears through openings formed in the circular top plate, so that the main tray rotates due to the revolution of the plurality of planetary gears with respect to the sun gear, and the rotation of each of the plurality of planetary gears In a method of operating a polishing device in which the plurality of auxiliary trays rotate,
measuring the height of an article placed on one of the plurality of auxiliary trays by moving the polishing pad unit up and down according to the actions of the control unit and the driving unit;
rotating the main tray so that the polishing pad unit moves to a position where another auxiliary tray is located after the polishing pad unit completes its upward movement in order to measure the height of an article placed on the other auxiliary tray;
It is determined whether the difference in height of the items placed on each of the plurality of auxiliary trays is less than or equal to a threshold value. If the height difference is less than or equal to the threshold value, a polishing operation is performed. If the height difference is greater than or equal to the threshold value, notification is performed. A method of operating a polishing device, comprising the step of outputting.
delete delete According to paragraph 1,
When a signal indicating that the plurality of auxiliary trays has been removed from the tray is received, the polishing pad unit moves up and down each time the main tray rotates at a certain angle to measure the height of the article placed on the main tray, Determining whether the height difference between the items placed on the main tray is less than a threshold, performing a polishing operation if the height difference is less than the threshold, and outputting a notification if the height difference is more than the threshold. A method of operating a polishing device further comprising: delete