WO2014201649A1

WO2014201649A1 - Polishing device and polishing method

Info

Publication number: WO2014201649A1
Application number: PCT/CN2013/077535
Authority: WO
Inventors: 杨顺
Original assignee: 深圳市华星光电技术有限公司
Priority date: 2013-06-17
Filing date: 2013-06-20
Publication date: 2014-12-24
Also published as: CN103317419B; US20150044949A1; CN103317419A

Abstract

Disclosed are a polishing device and polishing method. The polishing device is used for polishing a panel and comprises: a polishing belt pressing on the upper surface and the lower surface of the panel so as to simultaneously polish both surfaces; a belt transmission mechanism driving the polishing belt; a belt press mechanism pressing the polishing belt onto the upper surface and the lower surface of the panel. The polishing device and polishing method of the present invention simply use one polishing belt to simultaneously polish the upper surface and the lower surface of a panel, reducing the number of polishing belts used in a polishing period and saving production costs; in addition, rotation of a single polishing belt simultaneously applies force uniformly to the upper surface and the lower surface of the panel so as to increase the smoothness of both surfaces.

Description

Grinding device and grinding method

The present invention relates to a polishing apparatus and a polishing method for polishing a panel. More specifically, it relates to a polishing apparatus and a grinding method for polishing a panel using a single abrasive belt.

BACKGROUND OF THE INVENTION Currently, liquid crystal displays (Liquid Crystal Display, which have high image quality, good space utilization efficiency, low power consumption, and no radiation, are required in order to meet the requirements of consumers for thinning and thinning display devices.

LCD) has become the preferred display for consumers. As the main component of the liquid crystal display, the display panel is a very sophisticated electronic device. Taking an ordinary 19-inch display panel as an example, the surface is distributed with millions of pixels. Therefore, if unevenness occurs on the surface of the display panel, the overall display effect of the display panel is greatly affected. In order to ensure a certain degree of flatness on the surface of the display panel, the upper and lower surfaces of the display panel need to be ground during the production process.

However, as shown in Fig. 1, in the prior art, the upper surface 121 and the lower surface 122 of the display panel 120 are usually ground using a pair of upper and lower grinding mechanisms 111, 112, respectively. Thus, when the life of the abrasive belt expires, it is necessary to replace the two abrasive belts at one time, resulting in waste of the abrasive belt. In addition, the plurality of rotating wheels 131 fixed to the upper grinding mechanism 111 and the plurality of rotating wheels 132 fixed to the lower grinding structure 112 respectively rotate, causing their rotation to be different, so that the polishing belt used by the upper grinding mechanism 111 faces the display panel 120. The force applied by the upper surface 121 and the force applied by the polishing tape used by the lower grinding mechanism 112 to the lower surface 122 of the display panel 120 are different, thereby making the flatness of both surfaces of the display panel 120 poor.

SUMMARY OF THE INVENTION In order to solve the above problems in the prior art, an object of the present invention is to provide a polishing apparatus for polishing a panel, the polishing apparatus comprising: an abrasive belt for clamping an upper surface and a lower surface of the panel To simultaneously grind both sides of the panel; a belt drive mechanism to drive the abrasive belt; and a belt pressing mechanism for pressing the abrasive belt against the upper and lower surfaces of the panel. In addition, the belt transmission mechanism includes: four clamping wheels respectively on the left and right ends of the upper surface and the lower surface of the panel to attach the polishing belt to the chassis during transmission The upper surface and the lower surface of the panel, wherein one of the four clamping wheels is a driving wheel; at least two driven wheel sets, the two driven wheel sets are respectively disposed on left and right sides of the panel The grinding belt is driven to engage the clamping wheels at the left and right ends of the upper and lower surfaces of the panel, respectively. In addition, a clamping wheel disposed diagonally opposite to the driving wheel of the four clamping wheels is a driving wheel. Further, the driven wheel set includes a driven wheel that is supported by a cylinder that controls the movement of the one driven wheel to tighten or loosen the polishing belt. Further, the driven wheel set includes at least two driven wheels, each of which is supported by one cylinder, each cylinder controlling the movement of the driven wheel supported thereby to tighten or loosen the grinding belt. In addition, the material of the driving wheel is ceramic. Further, the driven wheel is made of metal, and rubber is wrapped around the outer periphery of the driven pulley. Further, the material of the non-active wheel of the four clamping wheels is made of metal, and rubber is wrapped around the periphery of the metal clamping wheel. Another object of the present invention is to provide a grinding method for grinding a panel, the grinding method comprising the steps of: clamping an upper surface and a lower surface of the panel with a grinding belt; using a belt transmission mechanism The polishing tape is driven; the polishing tape is pressed against the upper surface and the lower surface of the panel by a belt pressing mechanism to cause the polishing belt to simultaneously grind both sides of the panel. In addition, the belt transmission mechanism includes: four clamping wheels respectively on the left and right ends of the upper surface and the lower surface of the panel to attach the polishing belt to the chassis during transmission The upper surface and the lower surface of the panel, wherein one of the four clamping wheels is a driving wheel; at least two driven wheel sets, the two driven wheel sets are respectively disposed on left and right sides of the panel The grinding belt is driven to engage the clamping wheels at the left and right ends of the upper and lower surfaces of the panel, respectively. In addition, a clamping wheel disposed diagonally opposite to the driving wheel of the four clamping wheels is a driving wheel. Further, the driven wheel set includes a driven wheel that is supported by a cylinder that controls the movement of the one driven wheel to tighten or loosen the polishing belt. Further, the driven wheel set includes at least two driven wheels, each of which is supported by one cylinder, each cylinder controlling the movement of the driven wheel supported thereby to tighten or loosen the grinding belt. In addition, the material of the driving wheel is ceramic. Further, the driven wheel is made of metal, and rubber is wrapped around the outer periphery of the driven pulley. Further, the material of the non-active wheel of the four clamping wheels is made of metal, and rubber is wrapped around the periphery of the metal clamping wheel.

In the polishing apparatus and the polishing method of the present invention, the upper surface and the lower surface of the panel are simultaneously polished by using only one polishing tape, the number of the polishing belts consumed in one polishing cycle is reduced, the production cost is saved, and one polishing belt is simultaneously rotated. , the abrasive tape applies a uniform force to the upper and lower surfaces of the panel to improve the flatness of both surfaces of the panel.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic view showing the structure of a prior art polishing apparatus. Fig. 2 is a schematic structural view of a polishing apparatus according to Embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of a polishing apparatus according to Embodiment 2 of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT OF THE INVENTION The embodiments of the present invention are now described in detail. The embodiments are described below to explain the present invention by referring to the figures. In the drawings, the thickness of layers and regions may be exaggerated for clarity. In the following description, unnecessary details of well-known structures and/or functions may be omitted in order to avoid obscuring the inventive concept of the present invention. Embodiment 1 As shown in FIG. 2, a polishing apparatus 200 according to an embodiment of the present invention includes: a polishing tape 210, a belt transmission mechanism 220, and a belt pressing mechanism. The number of the polishing tapes 210 is one, and the belt pressing mechanism includes an upper belt pressing mechanism 231 and a lower belt pressing mechanism 232. Specifically, when the panel 300 is polished, the polishing tape 210 is inserted into the polishing gap formed between the upper tape pressing mechanism 231 and the upper surface 310 of the panel 300, and the lower tape pressing mechanism 232 and the panel 300 are formed. The grinding gap formed between the lower surfaces 320 is such that the polishing tape 210 covers the upper surface 310 and the lower surface 320 of the panel 300; the starting transmission mechanism 220 operates to drive the polishing belt 210 to rotate; the upper belt pressing mechanism 231 and the lower belt pressing The mechanism 232 can be moved up and down by the servo rails 240 connected to each other, thereby controlling whether the polishing tape 210 is pressed against the upper surface 310 and the lower surface 320 of the panel 300, so that the polishing tape 210 simultaneously grinds both sides of the panel 300. . Wherein, when the upper strap pressing mechanism 231 and the lower strap pressing mechanism 232 control the pressing of the abrasive tape 210 against the upper surface 310 and the lower surface 320 of the panel 300, the belt drive structure 220 tightens the abrasive tape 210 and drives the abrasive tape 210. Rotating, thereby causing the polishing tape 210 to simultaneously polish the upper surface 310 and the lower surface 320 of the panel 300; when the polishing is completed, the upper tape pressing mechanism 231 and the lower tape pressing mechanism 232 are away from the panel 300 under the control of the respective connected servo rails 240. Retracting, in this process, the abrasive belt 210 continues to be taut under the action of the belt drive mechanism 220. In the present embodiment, the belt drive mechanism 220 is constituted by a plurality of runners to achieve the above functions. Specifically, the belt drive mechanism 220 includes four clamping wheels 221, 222, 223, 224 and four driven wheels 225, 226, 227, 228. The first clamping wheel 221 and the second clamping wheel 222 are respectively fixed to the left and right ends of the upper belt pressing mechanism 231, and the third clamping wheel 223 and the fourth clamping wheel 224 are respectively fixedly disposed on the lower belt pressing mechanism 232. The left and right ends, and the first clamping wheel 221 and the third clamping wheel 223 are oppositely disposed, and the second clamping wheel 222 and the fourth clamping wheel 224 are oppositely disposed such that the four clamping wheels 221, 222, 223 224 are located at the left and right ends of the upper surface 310 and the lower surface 320 of the panel 300, respectively. Further, in the present embodiment, any two of the four clamping wheels 221, 222, 223, 224 can be set as the driving wheel, and the driving wheel referred to herein is a braking device that can be loaded by itself (for example, , the motor, etc., rotates autonomously, and then drives the other clamping wheels and the four driven wheels to rotate, thereby driving the grinding belt 210 to rotate, so that the belt transmission mechanism 220 can have sufficient transmission power to drive the polishing belt 210, so that The polishing tape 210 can be rotated at a constant speed, so that the polishing tape 210 grinds the upper surface 310 and the lower surface 320 of the panel 300 with a uniform force. Preferably, the fourth clamping wheel 224 and the fourth clamping wheel 224 are paired. The first clamping wheels 221 of the angular arrangement are all set as the driving wheels. In addition, the four driven wheels 225, 226, 227, 228 are grouped into two to form two driven wheel sets. In this embodiment, the first driven wheel 225 and the second driven wheel 226 are combined to form a first slave. The moving wheel set is disposed on the left side of the panel 300, and the third driven wheel 227 and the fourth driven wheel 228 are combined to form a second driven wheel set and disposed on the right side of the panel 300. Wherein, the four driven wheels 225, 226, 227, 228 are respectively controlled by one cylinder 250, and can be adjusted in the stroke direction of the cylinders 250 to be controlled respectively, and the fourth clamping wheel 224 and the first set as the driving wheels. A clamping wheel 221 rotates autonomously and drives When the other clamping wheels and the four driven wheels rotate, the respective driven wheels tighten the grinding belt 210 by the self-adjustment of the respective cylinders 250. When the polishing tape 210 needs to be replaced, each of the driven wheels can be moved toward the panel 300 by adjusting each of the cylinders 250, thereby causing the polishing tape 210 to be slack and manually replaced by a person. In addition, in the present invention, any one of the four clamping wheels 221, 222, 223, and 224 may be used as a driving wheel, and the clamping wheel provided as the driving wheel may be loaded by itself. The braking device (for example, a motor or the like) rotates autonomously, thereby driving the other clamping wheels and the four driven wheels to rotate, thereby also driving the polishing belt 210 to rotate. In practical applications, the materials of the first clamping wheel 221 and the fourth clamping wheel 224, which are set as the driving wheels, are all made of ceramics. Since the ceramic is an insulator, accidents caused by leakage of the brake device loaded by itself can be avoided. , improve safety and reliability. Moreover, since the clamping wheels and the driven wheels of the other inactive wheels are provided with the driving force of the grinding belt 210 by the frictional force, the material of the clamping wheel and the driven wheel of the non-active wheel of the embodiment are both metal. And rubber is wrapped around the metal to improve the friction between the clamping wheel and the driven wheel and the grinding belt 210 using the inactive wheel. Embodiment 2 As another alternative embodiment, as shown in FIG. 3, different from that shown in FIG. 2, the first driven wheel set may include only one driven wheel 229a, and the diameter of the driven wheel 229a is larger than The thickness of the panel 300 is such as to achieve the effect of the first driven wheel set described above. Similarly, the second driven wheel set may include only one driven wheel 229b, and the diameter of the driven wheel 229b is also larger than the thickness of the panel 300, thereby achieving the effect of the second driven wheel set described above. In summary, since only one polishing tape is used to simultaneously polish the upper surface and the lower surface of the panel, the number of polishing belts consumed in one polishing cycle is reduced, the production cost is saved, and one polishing belt is simultaneously rotated, so that The abrasive tape applies a uniform force to the upper and lower surfaces of the panel to improve the flatness of both surfaces of the panel.

Although the present invention has been particularly shown and described with reference to the exemplary embodiments thereof, those skilled in the art Various changes on it.

Claims

Claim

What is claimed is: 1. A polishing apparatus for polishing a panel, wherein: the polishing apparatus comprises: an abrasive belt clamping an upper surface and a lower surface of the panel to simultaneously grind both sides of the panel; The belt is driven; a belt pressing mechanism is used to press the belt to the upper and lower surfaces of the panel.

2. The polishing apparatus according to claim 1, wherein the belt transmission mechanism comprises: four clamping wheels, the four clamping wheels respectively being at left and right ends of the upper surface and the lower surface of the panel, Attaching the abrasive tape to the upper surface and the lower surface of the panel when being driven, wherein one of the four clamping wheels is a driving wheel; at least two driven wheel sets, the two The driven wheel sets are respectively disposed on the left and right sides of the panel to respectively drive the grinding belts with the clamping wheels located at the left and right ends of the upper and lower surfaces of the panel.

3. The polishing apparatus according to claim 2, wherein a clamping wheel disposed diagonally to the driving wheel of the four clamping wheels is a driving wheel.

4. The grinding apparatus according to claim 2, wherein the driven wheel set includes a driven wheel, the one driven wheel being supported by a cylinder, the cylinder controlling the movement of the one driven wheel to cause the grinding belt to stretch Tight or slack.

5. The grinding apparatus according to claim 2, wherein the driven wheel set includes at least two driven wheels, each of which is supported by one cylinder, each cylinder controlling movement of a driven wheel supported by the same, To tighten or loosen the abrasive belt.

The polishing apparatus according to claim 2, wherein the driving wheel is made of ceramic.

The polishing apparatus according to claim 3, wherein the driving wheel is made of ceramic.

The polishing apparatus according to claim 4, wherein the driven wheel is made of metal, and rubber is wrapped around the outer periphery of the driven wheel.

The polishing apparatus according to claim 5, wherein the driven wheel is made of metal, and rubber is wrapped around the outer periphery of the driven pulley.

The polishing apparatus according to claim 3, wherein the clamping wheel of the inactive wheel of the four clamping wheels is made of metal, and rubber is wrapped around the periphery of the metal clamping wheel.

11. A polishing method for polishing a panel, wherein the polishing method comprises the steps of: covering an upper surface and a lower surface of the panel with a polishing tape; and driving the polishing tape by a belt transmission mechanism; The polishing tape is pressed against the upper and lower surfaces of the panel by a belt pressing mechanism such that the polishing tape simultaneously grinds both sides of the panel.

12 . The polishing method according to claim 11 , wherein the belt transmission mechanism comprises: four clamping wheels, wherein the four clamping wheels are respectively at left and right ends of the upper surface and the lower surface of the panel, Attaching the abrasive tape to the upper surface and the lower surface of the panel when being driven, wherein one of the four clamping wheels is a driving wheel; at least two driven wheel sets, the two The driven wheel sets are respectively disposed on the left and right sides of the panel to respectively drive the grinding belts with the clamping wheels located at the left and right ends of the upper and lower surfaces of the panel.

13. The polishing method according to claim 12, wherein a clamping wheel disposed diagonally to the driving wheel of the four clamping wheels is a driving wheel.

14. The grinding method according to claim 12, wherein the driven wheel set includes a driven wheel, the one driven wheel is supported by a cylinder, and the cylinder controls the movement of the one driven wheel to cause the grinding belt to stretch Tight or slack.

15. The grinding method according to claim 12, wherein the driven wheel set includes at least two driven wheels, each of which is supported by one cylinder, each cylinder controlling movement of a driven wheel supported by the same, To tighten or loosen the abrasive belt.

The polishing method according to claim 12, wherein the driving wheel is made of ceramic.

The polishing method according to claim 13, wherein the driving wheel is made of ceramic.

The polishing method according to claim 14, wherein the driven wheel is made of metal. And rubber is wrapped around the periphery of the driven pulley made of metal.

The polishing method according to claim 15, wherein the driven wheel is made of metal, and rubber is wrapped around the outer periphery of the driven wheel.

The polishing method according to claim 13, wherein the material of the non-main wheel of the four clamping wheels is made of metal, and rubber is wrapped around the periphery of the metal clamping wheel.