TW201338920A - Grinding apparatus for plates - Google Patents

Abstract

A grinding apparatus for plates is provided. The grinding apparatus includes an elevator, a grinding module and a pressure module. The grinding module is opposite to a supporting part of the elevator and includes a grinding belt and a driving assembly. The driving assembly is connected the grinding belt to rotate the grinding belt. The pressure module includes a pressure head and a pressure adjusting assembly. The pressure head is configured to be moved to contact a portion of a back surface of the grinding belt located between the elevator and the pressure head. The pressure adjusting assembly is connected to the pressure head to move the pressure head. The pressure adjusting assembly includes a housing, an electromagnetic coil, a permanent magnet and a connecting element. The permanent magnet is movably disposed between a top of the housing and the electromagnetic coil. The electromagnetic coil is fixed in the housing and located between the pressure head and the permanent magnet. The connecting element is connected to the permanent magnet and the pressure head. Another grinding apparatus for plates is further provided.

Description

Plate grinding device

This invention relates to a polishing apparatus, and more particularly to a plate body polishing apparatus.

With the advancement of flat display technology, various flat display panels have been widely used in electronic products commonly seen in daily life, such as televisions, computers, mobile phones, satellite navigation devices, and the like.

In the process of making a flat display panel, the surface of the flat display panel needs to be ground and cleaned, and the conventional grinding device is shown in FIG. The conventional grinding apparatus 100 includes a driving member 110 to drive the moving platform 120 to move left and right in the horizontal direction D1, and the moving platform 120 is provided with a polishing cloth 130. In addition, the polishing apparatus 100 further includes a cylinder 140 for absorbing the flat display panel 50, and a cylinder 140 for connecting the polishing head 150 to drive the polishing head 150 to move up and down in the vertical direction D2. When the step of grinding is to be performed, the cylinder 140 drives the polishing head 150 to move downward to bring the flat display panel 50 into contact with the polishing cloth 130, and the driving member 110 drives the moving platform 120 to move left and right to grind the surface of the flat display panel 50. .

In the prior art, the upper pressurization of the cylinder 140 is unstable at the time of grinding, and air leakage is likely to occur, resulting in deterioration of the effect of polishing cleaning. In addition, the grinding thickness is not easy to control accurately, and it is prone to surface scratching or damage to the flat display panel 50.

The invention provides a plate body grinding device for precisely controlling the grinding thickness.

The invention further provides a plate body grinding device to reduce maintenance costs.

In order to achieve at least one of the above advantages, the present invention provides a plate grinding device comprising a lifting platform, a grinding module and a pressing module. The lifting platform has a bearing portion, the grinding module is opposite to the bearing portion, and the grinding module comprises a grinding belt and a driving assembly. The abrasive belt has opposing abrasive and back faces, and the drive assembly is coupled to the abrasive belt to drive the abrasive belt to rotate. The pressurizing module includes a pressurizing head and a pressure adjusting component. The pressing head is adapted to move to contact a back surface of a portion of the abrasive belt between the lifting platform and the pressing head, and the pressure adjusting assembly is coupled to the pressing head and adapted to move the pressing head to adjust the pressing head to be applied to the polishing belt pressure. The pressure adjusting assembly comprises a cavity, an electromagnetic coil, a permanent magnet and a connecting member, the cavity has a top side away from the pressing head, the permanent magnet is movably disposed between the electromagnetic coil and the top side, and between the permanent magnet and the top side Form a sealed airtight chamber. The electromagnetic coil is fixed to the cavity and located between the pressing head and the permanent magnet, and the connecting member is connected to the permanent magnet and the pressing head.

In one embodiment of the present invention, the plate body polishing apparatus further includes a pressure detecting module disposed on the carrying portion, and the pressure adjusting component further includes a control unit electrically connected to the pressure detecting module and the electromagnetic coil.

In an embodiment of the invention, the abrasive surface is a rough surface.

In an embodiment of the present invention, the pressure module further includes a plurality of balls disposed in the pressing head, and the pressing head includes a contact surface for contacting the grinding belt, and the contact surface is provided with a plurality of holes. The balls extend out of the contact surface via the holes respectively to contact the polishing tape.

In an embodiment of the invention, the pressing head comprises a contact surface for contacting the polishing tape, the contact surface is provided with a plurality of liquid outlet holes, and the polishing tape is provided with a plurality of through holes extending from the polishing surface to the back surface .

In an embodiment of the invention, the drive assembly includes a roller set.

In an embodiment of the present invention, the carrying portion includes a first bearing surface and a second bearing surface at an edge of the first bearing surface, and the distance between the first bearing surface and the pressing head is different from the second bearing surface and The distance between the pressurizing heads.

In an embodiment of the invention, the lifting platform comprises a platform body and a driving component. The platform body has a carrier portion, and the driving component is coupled to the platform body to drive the platform body to move toward or away from the polishing module.

In order to achieve at least one of the above advantages, the present invention further provides a plate grinding device comprising a lifting platform, a grinding module and a pressing module. The lifting platform has a bearing portion, and the grinding module is opposite to the bearing portion. The grinding module includes a grinding belt and a driving assembly. The abrasive belt has a relatively abrasive surface and a back surface. The drive assembly is coupled to the abrasive belt to drive the abrasive belt to rotate. The pressurizing module includes a pressurizing head, a plurality of balls, and a pressure adjusting assembly. The pressing head is adapted to move to contact the back side of a portion of the abrasive belt between the lifting platform and the pressing head. The ball is disposed in the pressing head, and the pressing head includes a contact surface for contacting the polishing tape, and the contact surface is provided with a plurality of holes, and the balls respectively protrude out of the contact surface through the holes to contact the polishing tape. The pressure adjustment assembly is coupled to the pressure head and is adapted to move the pressure head to adjust the pressure applied by the pressure head to the abrasive belt.

In the plate grinding device according to an embodiment of the present invention, the plate body is disposed on the lifting platform, and the polishing tape is pressed to the plate body by the pressing module to grind the plate body, and the manner helps Precise control of the thickness of the grinding. In addition, in the plate grinding device according to another embodiment of the present invention, since the ball is provided in the pressing head to reduce the friction between the polishing tape and the pressing head, the service life of the polishing tape can be prolonged to reduce maintenance. cost.

The above and other objects, features and advantages of the present invention will become more <RTIgt;

2 is a schematic view of a plate body polishing apparatus according to an embodiment of the present invention. Referring to FIG. 2, the plate grinding apparatus 200 of the embodiment includes a lifting platform 210, a polishing module 220, and a pressing module 230. The lifting platform 210 has a bearing portion 211 for carrying the plate body 60, and the grinding module 220 and the polishing module 220 The carrying portion 211 is opposed to each other. This lifting platform 210 includes, for example, a platform body 212 and a drive element 213. The above-mentioned carrying portion 211 belongs to the platform body 212, and the driving element 213 is connected to the platform body 212. The drive element 213 is, for example, a motor that drives the platform body 212 to move in the direction D3 to approach or move away from the polishing module 220. The plate body 60 is, for example, an element such as a display panel or a glass substrate, but is not limited thereto.

The polishing module 220 includes a polishing tape 221 and a driving assembly 222. The polishing tape 221 has a facing polishing surface 223 and a back surface 224. The polishing surface 223 is, for example, a rough surface, and a portion of the polishing surface 223 between the carrier portion 211 and the pressurizing module 230 faces the carrier portion 211. The drive assembly 222 is coupled to the abrasive belt 221 to drive the abrasive belt 221 to rotate. The driving assembly 222 of this embodiment includes, for example, a roller set 222, and the roller set 222 can rotate the grinding belt 221 when rotated.

The pressurizing module 230 includes a pressurizing head 231 and a pressure adjusting assembly 232. The pressing head 231 is adapted to move to contact the back surface 224 of the partial grinding belt 221 between the lifting platform 211 and the pressing head 231, and the pressure adjusting assembly 232 is coupled to the pressing head 231 and is adapted to move the pressing head 231 The pressure applied to the polishing tape 221 by the pressurizing head 231 is adjusted.

In the present embodiment, when the plate body 60 is to be ground, the grinding belt 221 is driven to rotate by the driving assembly 222, and the driving body 213 is driven to move the platform body 212 in the direction of approaching the grinding module 220 along the direction B3. The plate body 60 is brought into contact with the polishing surface 223 of the polishing tape 221 or at an appropriate distance from the polishing surface 223 of the polishing tape 221. Next, the pressurizing head 231 applies pressure to the polishing tape 221 by the pressure adjusting unit 232 to cause the polishing tape 221 to polish the surface of the plate body 60.

Different from the prior art, the plate grinding device 200 of the present embodiment is designed to carry the plate body 60 by the lifting platform 210, and pressurize the grinding belt 221 to the plate body 60 by the pressing module 230. The plate body 60 is ground. The driving element 213 of the lifting platform 210 can accurately control the rising height of the platform body 212, which helps to accurately control the grinding thickness. In addition, in order to control the grinding thickness more precisely, the driving component 213 of the lifting platform 210 can cooperate with a height sensor (not shown) for sensing the position of the plate body 60 to control the height of the platform body 212 rising.

In order to more precisely and stably control the pressure applied to the abrasive belt 221, the pressure adjusting assembly 232 selected in the present embodiment includes, for example, a cavity 233, an electromagnetic coil 234, a permanent magnet 235, and a connecting member 236. The cavity 233 has a top side 237 away from the pressurizing head 231, the permanent magnet 235 is movably disposed between the electromagnetic coil 234 and the top side 237, and a sealed airtight chamber S is formed between the permanent magnet 235 and the top side 237. The gas pressure in the sealed airtight chamber S is, for example, adjustable. The electromagnetic coil 234 is fixed to the cavity 233 and located between the pressing head 231 and the permanent magnet 235, and the connecting member 236 is passed through the electromagnetic coil 234 and connected to the permanent magnet 235 and the pressing head 231, for example.

By controlling the direction and strength of the current flowing into the electromagnetic coil 234, a repulsive force is generated between the electromagnetic coil 234 and the permanent magnet 235, and this repulsive force can directly support the permanent magnet 235, the connecting member 236, and the pressing head 231. Moreover, by controlling the air pressure in the sealed airtight chamber S, the permanent magnet 235 can be driven to move downward, and the connecting member 236 and the pressing head 231 are moved to adjust the pressure applied to the grinding belt 221 by the pressing head 231. Different from the prior art, the pressure adjusting component 232 selected in the embodiment can drive the pressing head 231 by using a magnetic mixing cylinder, so that the pressing head 231 can be more accurately and stably controlled to be applied to the grinding belt 221. The pressure is to avoid poor grinding or damage to the plate 60.

It should be noted that the present invention does not limit the driving mode of the pressure adjusting component 232. In another embodiment, the permanent magnet 235 can also be driven by the over-force generated between the electromagnetic coil 234 and the permanent magnet 235, and the connecting member 236 and the pressing head 231 move along with the permanent magnet 235. In more detail, the direction and strength of the magnetic force generated by the electromagnetic coil 234 can be adjusted only by controlling the direction and intensity of the current flowing into the electromagnetic coil 234, so that an appropriate attraction is generated between the electromagnetic coil 234 and the permanent magnet 235. The force or repulsive force controls the moving direction of the permanent magnet 235 to adjust the pressure applied to the grinding belt 221 by the pressing head 231. In other embodiments, other pressure adjustment components may be used in place of the pressure adjustment assembly 232 described above.

In addition, the plate body polishing apparatus 200 further includes a pressure detecting module 240 disposed on the bearing portion 211, and the pressure adjusting component 230 further includes a control unit electrically connected to the pressure detecting module 240 and the electromagnetic coil 234 (not shown) Show). The pressure detecting module 240 includes a plurality of pressure detectors 242 for sensing pressure, and the control unit can control the strength of the current flowing into the electromagnetic coil 234 according to the sensing result of the pressure detecting module 240. The direction or the air pressure in the sealed airtight chamber S is adjusted to more accurately and stably control the pressure applied to the grinding belt 221 by the pressurizing head 231.

Figure 3 is a schematic illustration of the contact surface of the pressurizing head of Figure 2. Referring to FIG. 2 and FIG. 3 , in order to reduce the friction between the contact surface 239 of the pressing head 231 and the polishing tape 221 that the plasticizing head 221 contacts, the pressing module 230 may further include a plurality of balls disposed in the pressing head 231 . 251, and a plurality of holes 252 may be disposed on the contact surface 239 of the pressing head 231. The balls 251 extend out of the contact surface 239 via the holes 252 to contact the grinding belt 221, respectively. Thus, the resistance to the rotation of the polishing tape 221 can be reduced and the service life of the polishing tape 221 can be increased, thereby reducing the maintenance cost of the plate body polishing apparatus 200.

Figure 4 is a schematic illustration of the abrasive surface of the abrasive belt of Figure 2. Referring to FIGS. 2 to 4, in order to enhance the effect of cleaning the plate body 60, a cleaning liquid (such as water) may be flowed to the polishing surface 223 of the polishing tape 221 via the pressurizing head 231. Specifically, the contact surface 239 of the pressing head 231 may be provided with a plurality of liquid discharging holes 253, and other surfaces of the pressing head 231 (such as a surface opposite to the contact surface 239) are provided with, for example, a liquid inlet for injection cleaning. liquid. In addition, the polishing tape 221 is provided with a plurality of through holes 225 extending from the polishing surface 223 to the back surface 224, so that the cleaning liquid flowing out from the liquid outlet holes 253 can flow to the polishing surface 223 and the plate body 60 via the through holes 225. between.

5 is a top plan view of a carrying portion and a plate body carried by the same according to another embodiment of the present invention, and FIG. 6 is a cross-sectional view taken along line I-I of FIG. 5. Referring to FIG. 5 and FIG. 6, in the embodiment in which the plate body is not uniform, the bearing surface of the bearing portion can be designed to match the shape of the plate body. For example, when the carrying portion 211a is used to carry the board 60a (such as a display panel), since the board 60a includes the substrate 61 and the substrate 62, and the substrate 61 protrudes beyond the substrate 62, the substrate 61 protrudes from the substrate. In part of 62, the carrier portion 211a can be designed to include a first bearing surface 214 and a second bearing surface 215 at the edge of the first bearing surface 214. The distance between the first bearing surface 215 and the pressing head 231 shown in FIG. 2 is different from the distance between the second bearing surface 215 and the pressing head 231. The first bearing surface 215 is used to carry the substrate 62, and the second bearing surface 215 is, for example, higher than the first bearing surface 214, so as to carry the portion of the substrate 61 protruding from the substrate 62, so as to avoid skew when the plate 60a is under pressure. In this case, the surface 63 of the substrate 61 can be uniformly polished.

In summary, in the plate grinding device of the present invention, the plate body is disposed on the lifting platform, and the polishing tape is pressed to the plate body by the pressing module to grind the plate body. Since the driving elements of the lifting platform can accurately control the rising height of the platform body, this helps to precisely control the grinding thickness. In addition, in the plate grinding device of an embodiment, since the ball is provided in the pressing head to reduce the friction between the polishing tape and the pressing head, the service life of the polishing tape can be prolonged to reduce the grinding of the plate body. Maintenance costs of the unit. In addition, unlike the conventional technique of simply using the cylinder drive, in the embodiment of the pressure adjustment assembly including the cavity, the electromagnetic coil, the permanent magnet, and the connecting member, the magnetic pressure mixing cylinder can be used to drive the pressing head. Therefore, the pressure applied to the polishing belt by the pressing head can be controlled more accurately and stably.

While the present invention has been described in its preferred embodiments, the present invention is not intended to limit the invention, and the present invention may be modified and modified without departing from the spirit and scope of the invention. The scope of protection is subject to the definition of the scope of the patent application.

50. . . Display panel

60, 60a. . . Plate body

61, 62. . . Substrate

63. . . surface

100. . . Grinding device

110. . . Drive

120. . . mobile platform

130. . . Abrasive cloth

140. . . cylinder

150. . . Grinding head

200. . . Plate grinding device

210. . . Lifting platform

211, 211a. . . Carrying part

212. . . Platform ontology

213. . . Drive component

214. . . First bearing surface

215. . . Second bearing surface

220. . . Grinding module

221. . . Grinding tape

222. . . Drive component

223. . . Grinding surface

224. . . back

225. . . Through hole

230. . . Pressurized module

231. . . Pressurizing head

232. . . Pressure adjustment component

233. . . Cavity

234. . . Electromagnetic coil

235. . . permanent magnet

236. . . Connector

237. . . Top side

239. . . Contact surfaces

240. . . Pressure detection module

242. . . Pressure detector

251. . . Ball

252. . . Hole

253. . . Liquid outlet

D1, D2, D3. . . direction

S. . . Sealed airtight chamber

1 is a schematic view of a conventional polishing apparatus.

2 is a schematic view of a plate body polishing apparatus according to an embodiment of the present invention.

Figure 3 is a schematic illustration of the contact surface of the pressurizing head of Figure 2.

Figure 4 is a schematic illustration of the abrasive surface of the abrasive belt of Figure 2.

FIG. 5 is a top plan view of a load bearing portion and a plate body carried by the same according to another embodiment of the present invention.

Figure 6 is a cross-sectional view taken along line I-I of Figure 5.

60. . . Plate body

200. . . Plate grinding device

210. . . Lifting platform

211. . . Carrying part

212. . . Platform ontology

213. . . Drive component

220. . . Grinding module

221. . . Grinding tape

222. . . Drive component

223. . . Grinding surface

224. . . back

230. . . Pressurized module

231. . . Pressurizing head

232. . . Pressure adjustment component

233. . . Cavity

234. . . Electromagnetic coil

235. . . permanent magnet

236. . . Connector

237. . . Top side

239. . . Contact surfaces

240. . . Pressure detection module

242. . . Pressure detector

D3. . . direction

S. . . Sealed airtight chamber

Claims (15)

A plate body polishing apparatus comprising: a lifting platform having a bearing portion; and a polishing module, opposite to the bearing portion, the polishing module comprising: a polishing tape having an opposite grinding surface and a back surface; and a a driving assembly connecting the polishing tape to drive the polishing belt to rotate; and a pressing module comprising: a pressing head adapted to move to contact a portion between the lifting platform and the pressing head The back surface of the belt; and a pressure adjusting assembly coupled to the pressing head and adapted to move the pressing head to adjust a pressure applied to the polishing belt by the pressing head, the pressure adjusting assembly comprising a cavity and an electromagnetic a coil, a permanent magnet and a connecting member, the cavity has a top side away from the pressing head, the permanent magnet is movably disposed between the electromagnetic coil and the top side, and the permanent magnet and the top side A sealed airtight chamber is formed, the electromagnetic coil is fixed to the cavity, and is located between the pressing head and the permanent magnet, and the connecting member is connected to the permanent magnet and the pressing head. The plate grinding device of claim 1, further comprising a pressure detecting module disposed on the carrying portion, wherein the pressure adjusting component further comprises a control unit electrically connected to the pressure detecting module Group with the electromagnetic coil. The plate grinding device according to claim 1, wherein the grinding surface is a rough surface. The plate grinding device of claim 1, wherein the pressing module further comprises a plurality of balls disposed in the pressing head, and the pressing head includes a contact surface for contacting the polishing tape A plurality of holes are formed in the contact surface, and the balls respectively protrude outside the contact surface through the holes to contact the polishing tape. The plate grinding device of claim 1, wherein the pressing head comprises a contact surface for contacting the polishing tape, the contact surface is provided with a plurality of liquid outlet holes, and the polishing tape is provided with a plurality of Holes extending from the abrasive surface to the back surface. The plate grinding device of claim 1, wherein the drive assembly comprises a roller set. The plate grinding device of claim 1, wherein the bearing portion comprises a first bearing surface and a second bearing surface at the edge of the first bearing surface, the first bearing surface and the pressing head The distance between the two is different from the distance between the second bearing surface and the pressing head. The plate grinding device of claim 1, wherein the lifting platform comprises: a platform body having the bearing portion; and a driving component coupled to the platform body to drive the platform body toward or away from the platform The direction of the grinding module moves. A plate body polishing apparatus comprising: a lifting platform having a bearing portion; and a polishing module, opposite to the bearing portion, the polishing module comprising: a polishing tape having an opposite grinding surface and a back surface; and a a driving assembly connecting the polishing belt to drive the polishing belt to rotate; and a pressing module comprising: a pressing head adapted to move to contact a portion of the polishing belt between the lifting platform and the pressing head The back surface; a plurality of balls disposed in the pressing head, and the pressing head includes a contact surface for contacting the polishing tape, wherein the contact surface is provided with a plurality of holes through which the balls respectively pass Extending out of the contact surface to contact the polishing tape; and a pressure adjusting assembly coupled to the pressing head and adapted to move the pressing head to adjust a pressure applied to the polishing belt by the pressing head. The plate grinding device of claim 9, further comprising a pressure detecting module disposed on the carrying portion and electrically connected to the pressure adjusting assembly. The plate grinding device of claim 9, wherein the abrasive surface is a rough surface. The plate grinding device according to claim 9, wherein the contact surface of the pressing head is provided with a plurality of liquid discharging holes, and the polishing tape is provided with a plurality of through holes, the through holes are from the grinding surface Extend to the back. The plate grinding device of claim 9, wherein the drive assembly comprises a roller set. The plate grinding device of claim 9, wherein the bearing portion comprises a first bearing surface and a second bearing surface at the edge of the first bearing surface, the first bearing surface and the pressing head The distance between the two is different from the distance between the second bearing surface and the pressing head. The plate grinding device of claim 9, wherein the lifting platform comprises: a platform body having the bearing portion; and a driving component coupled to the platform body to drive the platform body toward or away from the platform The direction of the grinding module moves.