CN114700872A

CN114700872A - Glass substrate grinding system for grinding machine and grinding machine

Info

Publication number: CN114700872A
Application number: CN202210474899.5A
Authority: CN
Inventors: 李青; 李赫然; 苏记华; 杜跃武; 孟伟华; 张松昊; 刘先强; 张瑞冰; 韩铎; 陈龙武
Original assignee: Zhengzhou Xufei Optoelectronic Technology Co Ltd; Beijing Yuanda Xinda Technology Co Ltd
Current assignee: Zhengzhou Xufei Optoelectronic Technology Co Ltd; Beijing Yuanda Xinda Technology Co Ltd
Priority date: 2022-04-29
Filing date: 2022-04-29
Publication date: 2022-07-05

Abstract

The invention relates to a glass substrate grinding system for a grinding machine and the grinding machine, wherein the grinding system comprises a workbench, a grinding device and a control module, the workbench is used for fixing a glass substrate, the grinding device is divided into two groups and comprises a track mechanism, a mounting seat movably arranged on the track mechanism, a grinding mechanism and a detection mechanism, the grinding mechanism and the detection mechanism are arranged on the mounting seat, the track mechanism is used for driving the mounting seat to move along a first direction, a first driving module of the grinding mechanism is used for driving a grinding head to move along a second direction vertical to the first direction, the detection mechanism is used for detecting the distance between a measuring position and the glass substrate before and after grinding on the workbench before and after grinding in the second direction, the control module is used for controlling the track mechanism and the first driving module according to the distance before and after grinding to adjust the track of the grinding head when the grinding head moves between the two measuring positions, through the technical scheme, the grinding amount can be accurately controlled, and the quality of the ground glass substrate is guaranteed.

Description

Glass substrate grinding system for grinding machine and grinding machine

Technical Field

The disclosure relates to the technical field of photoelectric display glass substrate processing, in particular to a glass substrate grinding system for a grinding machine and the grinding machine.

Background

At present, in the process of grinding a photoelectric display glass substrate, the glass substrate needs to be tightly adsorbed on a workbench of a grinding machine, but the position of the glass substrate when the glass substrate is placed on the workbench is difficult to ensure to be exactly located at the set position of a machine tool coordinate, so that the accurate linearity between the edge to be ground of the glass substrate and the walking route of a grinding head when the grinding wheel grinds the glass substrate cannot be ensured, and the consistency of the grinding amount of the edge of the glass substrate is poor, and the grinding defect occurrence rate is high. In the related art, before the edge of the photoelectric display glass substrate is ground, the edge is mechanically positioned, but the accuracy of an edge positioning device is poor, so that the edge of the glass substrate is difficult to ensure to be parallel to a reference line where a grinding head is positioned, and the grinding quantity consistency and the grinding quality of the edge of the glass substrate cannot be effectively controlled within a qualified range; or, the mode of adding the rotatable adjusting workbench has higher consistency of the grinding amount of the ground glass substrate, but the economic cost is too large.

Disclosure of Invention

The purpose of the present disclosure is to provide a glass substrate grinding system for a grinding machine and a grinding machine, wherein the glass substrate grinding system can precisely control the grinding amount, reduce the edge defects of the glass substrate caused by inconsistent grinding amount, and ensure the quality of the ground glass substrate.

In order to achieve the above object, according to a first aspect of the present disclosure, there is provided a glass substrate grinding system for a grinder, the grinding system including: a work table for fixing the glass substrate; the grinding devices are arranged on two opposite sides of the workbench in a first direction respectively, each grinding device comprises a track mechanism, a mounting seat movably arranged on the track mechanism, and a grinding mechanism and a detection mechanism which are arranged on the mounting seat, the track mechanism is used for driving the mounting seat to move along the first direction, the grinding mechanism comprises a first driving assembly and a grinding head, the first driving assembly is used for driving the grinding head to move along a second direction perpendicular to the first direction so as to be capable of approaching to or separating from a glass substrate on the workbench, two measurement positions which are arranged at intervals in the first direction are preset on the track mechanism, and the detection mechanism is used for detecting the distance between the measurement positions and the glass substrate before grinding on the workbench in the second direction when the detection mechanism moves to the measurement positions along with the mounting seat, and a step for detecting a post-polishing distance in the second direction between the measurement site and the polished glass substrate; and the control module is respectively in signal connection with the track mechanism, the detection mechanism and the first driving assembly and is used for controlling the track mechanism and the first driving assembly to adjust the track of the grinding head when the grinding head moves between the two measuring positions according to the values of the two distances before grinding and the two distances after grinding, which are detected by the detection mechanism.

Optionally, the number of the grinding mechanisms is multiple and the grinding mechanisms are arranged on the mounting seat at intervals along the first direction.

Optionally, the number of the grinding mechanisms is three, and three grinding heads of the three grinding mechanisms are a coarse grinding head, a fine grinding head and a polishing grinding head in sequence in a direction opposite to an advancing direction of grinding.

Optionally, the grinding mechanism further includes a second driving assembly and a sliding seat, the sliding seat is movably connected to the mounting seat along the second direction, the first driving assembly is in driving connection with the sliding seat to drive the sliding seat to move, the grinding head is rotatably disposed on the sliding seat around its axis, and the second driving assembly is in driving connection with the grinding head to drive the grinding head to rotate.

Optionally, the first driving assembly includes a first motor and a first transmission mechanism, and the first motor drives the sliding seat to move along the second direction through the first transmission mechanism;

first drive mechanism includes threaded connection's lead screw and screw, the lead screw can set up with rotating around self axis on the mount pad and follow the second direction extends, the screw link firmly in the slide, first motor with lead screw drive is connected, in order to drive the lead screw rotates.

Optionally, still be provided with guiding mechanism on the mount pad, guiding mechanism is used for guiding the slide is followed the second direction removes, guiding mechanism includes sliding fit's slide rail and slider, the slide rail link firmly in the mount pad just extends along the second direction, the slider link firmly in the slide.

Optionally, the rail mechanism includes a first slide rail and a third driving assembly extending along a first direction, the mounting base is movably disposed on the first slide rail along the first direction, the third driving assembly includes a second motor, a rack and a gear, the second motor is fixedly disposed on the mounting base and is in driving connection with the gear, and the rack is in meshing connection with the gear and extends along the first direction.

Optionally, the detection mechanism includes a fourth driving component and a detector respectively in signal connection with the control module, the fourth driving component is configured to drive the detector in the second direction to switch between a detection position at which the detector identifies the glass substrate before grinding or the glass substrate after grinding and a reset position, and the control module is configured to obtain the distance before grinding or the distance after grinding according to the distance between the detection position and the reset position and the distance between the reset position and the measurement position in the second direction.

Optionally, the detector is a travel switch, and the fourth driving component is a linear motor or an electric push rod.

On the basis of the technical scheme, the disclosure also provides a grinding machine, which comprises the glass substrate grinding system.

Through the technical scheme, the glass substrate grinding system for grinding machine that this disclosure provided sets up grinder in workstation side, move along the first direction through rail mechanism drive mount pad, can drive grinding mechanism and the detection mechanism that sets up on the mount pad and move along the first direction, move along the second direction perpendicular with the first direction through the first drive assembly drive grinding head on the grinding mechanism, can be close to or keep away from the glass substrate who fixes on the workstation, so that the grinding head can grind the limit portion of glass substrate when moving along the first direction behind the limit portion of laminating glass substrate. Because two measurement positions which are arranged at intervals along the first direction are preset on the track mechanism, the detection mechanism can respectively detect the distance between the two measurement positions and the glass substrate which is positioned on the workbench and is ground before and after the glass substrate is ground in the second direction when the detection mechanism moves to the two measurement positions along with the mounting seat, and thus, a control module which is in signal connection with the track mechanism, the detection mechanism and the first driving assembly can control the track mechanism and the first driving assembly to adjust the track of the grinding head between the two measurement positions when the grinding head moves along the first direction and the second direction according to the values of the distance between the two measurement positions before and the distance between the two grinding positions, thereby ensuring that the grinding head always keeps the same grinding amount in the process of grinding the glass substrate, avoiding the edge defects of the glass substrate caused by inconsistent grinding amounts, and ensuring the quality of the ground glass substrate. In addition, because this disclosed grinder sets up to two sets ofly, sets up respectively in the relative both sides of workstation about the first direction, like this, can once grind the both sides of glass substrate simultaneously to improve the work efficiency of one time, reduced manufacturing cost.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

FIG. 1 is a schematic diagram illustrating a top view of a polishing system according to an embodiment of the present disclosure;

FIG. 2 is an enlarged view of a portion of FIG. 1 at position A;

FIG. 3 is a schematic view of a second driving mechanism and a polishing head according to an embodiment of the disclosure;

FIG. 4 is a schematic diagram of measuring a pre-polish distance and a post-polish distance from a bit to a glass substrate according to an embodiment of the disclosure;

fig. 5 is a logical framework diagram provided by an embodiment of the present disclosure.

Description of the reference numerals

1-a workbench; 2-a grinding device; 21-a track mechanism; 211-measurement bits; 2111-first L measurement bit; 2112-second L measurement bit; 2113-first R measurement bit; 2114-second R measurement bit; 212-a first slide rail; 213-a third drive assembly; 2131-a second motor; 2132-rack bar; 22-a mounting seat; 23-a grinding mechanism; 231-a first drive assembly; 2311-a first electric machine; 232-grinding head; 2321-coarse grinding head; 2322-fine grinding head; 2323-polishing grinding head; 233-a slide base; 234 — a first transmission; 2341-screw; 2342-nut; 235-a second drive assembly; 236-a shield; 237-a slider; 238-a second slide rail; 24-a detection mechanism; 241-a fourth drive assembly; 242-a detector; 3-a control module; 4-a glass substrate; and 5, a frame.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, the use of directional terms such as "upper and lower" generally means "upper and lower" opposed to each other in the gravity direction when the respective components are in the use state, unless otherwise specified. In the drawings, "X-direction" indicates a first direction, and "Y-direction" indicates a second direction. In addition, the terms "first," "second," and the like, as used herein, are intended to distinguish one element from another, and are not necessarily sequential or significant. Furthermore, in the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and explain the present disclosure and should not be construed to limit the present disclosure.

According to a specific embodiment of a first aspect of the present disclosure, as illustrated with reference to fig. 1 to 5, there is provided a glass substrate polishing system for a polishing machine, the polishing system including a table 1, a polishing apparatus 2, and a control module 3. The workbench 1 is used for fixing the glass substrate 4; the grinding devices 2 are two in number and are respectively arranged on two opposite sides of the worktable 1 relative to a first direction, the grinding devices 2 comprise a track mechanism 21, a mounting seat 22 movably arranged on the track mechanism 21, and a grinding mechanism 23 and a detection mechanism 24 arranged on the mounting seat 22, the track mechanism 21 is used for driving the mounting seat 22 to move along the first direction, the grinding mechanism 23 comprises a first driving assembly 231 and a grinding head 232, the first driving assembly 231 is used for driving the grinding head 232 to move along a second direction perpendicular to the first direction so as to be capable of approaching to or separating from the glass substrate 4 on the worktable 1, two measurement positions 211 arranged at intervals along the first direction are preset on the track mechanism 21, the detection mechanism 24 is used for detecting the distance between the measurement positions 211 and the glass substrate 4 before grinding on the worktable 1 in the second direction when the track mechanism 22 moves to the measurement positions 211, and for detecting the post-polishing distance in the second direction of the measurement site 211 from the polished glass substrate 4; the control module 3 is respectively connected to the track mechanism 21, the detection mechanism 24 and the first driving module 231 for controlling the track mechanism 21 and the first driving module 231 to adjust the track of the polishing head 232 moving between the two measuring positions 211 according to the values of the two distances before polishing and the two distances after polishing detected by the detection mechanism 24.

Through the technical scheme, the glass substrate grinding system for the grinding machine provided by the disclosure is provided with the grinding device 2 at the side of the workbench 1, the mounting seat 22 is driven to move along the first direction through the track mechanism 21, the grinding mechanism 23 and the detection mechanism 24 which are arranged on the mounting seat 22 can be driven to move along the first direction, the grinding head 232 is driven to move along the second direction which is vertical to the first direction through the first driving assembly 231 on the grinding mechanism 23, and the grinding head can be close to or far away from the glass substrate 4 which is fixed on the workbench 1, so that the grinding head 232 can grind the edge of the glass substrate 4 when moving along the first direction after being attached to the edge of the glass substrate. Because the two measuring positions 211 which are arranged at intervals along the first direction are preset on the track mechanism 21, and the detection mechanism 24 can respectively detect the distances between the two measuring positions 211 and the glass substrate 4 which is positioned on the workbench 1 before and after grinding along the second direction when the detection mechanism 24 moves to the two measuring positions 211 along with the installation seat 22, in this way, the control module 3 which is in signal connection with the track mechanism 21, the detection mechanism 24 and the first driving assembly 231 can control the track mechanism 21 and the first driving assembly 231 to adjust the tracks of the grinding head 232 when the grinding head 232 moves along the first direction and the second direction between the two measuring positions 211 according to the values of the two distances before and after grinding, thereby ensuring that the grinding head 232 always keeps the same grinding amount in the process of grinding the glass substrate 4, avoiding the defects of the glass substrate 4 caused by inconsistent grinding amount, the quality of the glass substrate 4 after polishing is ensured. In addition, because the grinding devices 2 of the present disclosure are provided in two sets, respectively on two opposite sides of the worktable 1 with respect to the first direction, both sides of the glass substrate 4 can be simultaneously ground at one time, thereby doubling the work efficiency and reducing the production cost.

In the specific embodiment provided by the present disclosure, referring to fig. 1, the number of the grinding mechanisms 23 may be plural and disposed on the mount 22 at intervals in the first direction. The plurality of grinding mechanisms 23 are arranged on the mounting seat 22 at intervals along the first direction, so that the plurality of grinding mechanisms 23 can move along the first direction along with the mounting seat 22 under the driving of the track mechanism 21 and grind the glass substrate 4 in sequence, in addition, each grinding mechanism 23 comprises a first driving assembly 231 capable of driving the grinding head 232 to move along the second direction, therefore, the plurality of grinding heads 232 can be respectively and independently driven to be close to or far away from the glass substrate 4 along the second direction, so that the grinding amount between different grinding heads 232 can be adjusted, in this way, the mounting seat 22 on the track mechanism 21 can finish grinding the glass substrate 4 for a plurality of times once, the grinding effect after grinding for a plurality of times can be obtained by the mounting seat 22 once walking, the grinding efficiency is improved, and the processing time is shortened.

According to a specific embodiment, the number of the grinding mechanisms 23 is three, and the three grinding heads 232 of the three grinding mechanisms 23 are a coarse grinding head 2321, a fine grinding head 2322 and a polishing grinding head 2323 in sequence in a direction opposite to the advancing direction of grinding. Thus, when the three polishing heads 232 are driven by the mounting base 22 to move in the first direction, the coarse polishing head 2321, the fine polishing head 2322 and the polishing head 2323 are firstly in contact with the glass substrate 4, so that the glass substrate 4 can be ground, ground and polished sequentially, and when the three polishing heads 232 are driven by the track mechanism 21 to complete the polishing of the glass substrate 4 sequentially, the edge of the glass substrate 4 can obtain the required polishing effect. Of course, the grinding mechanism 23 can be any other suitable number according to the requirement of practical application, and the present disclosure is not limited thereto.

In order to enable the fine polishing head 2322 to contact the glass substrate 4 and polish the glass substrate by an appropriate fine polishing amount after the coarse polishing head 2321 is polished and enable the polishing head 2323 to contact the glass substrate 4 and polish the glass substrate by an appropriate polishing amount after the fine polishing head 2322 is polished, the polishing cut amounts of the coarse polishing head 2321, the fine polishing head 2322 and the polishing head 2323 on the glass substrate 4 are sequentially and gradually increased along the second direction, that is, the distance that the coarse polishing head 2321 cuts into the edge of the glass substrate 4 is the smallest, and the distance that the polishing head 2323 cuts into the edge of the glass substrate 4 is the largest, so that each polishing head can effectively polish the edge of the glass substrate 4 to obtain the best polishing effect.

In the embodiment provided in the present disclosure, referring to fig. 1 to 3, the polishing mechanism 23 may further include a second driving assembly 235 and a sliding seat 233, the sliding seat 233 is movably connected to the mounting seat 22 along the second direction, the first driving assembly 231 is in driving connection with the sliding seat 233 to drive the sliding seat 233 to move, the polishing head 232 is rotatably disposed on the sliding seat 233 around its axis, and the second driving assembly 235 is in driving connection with the polishing head 232 to drive the polishing head 232 to rotate. Since the first driving assembly 231 can drive the sliding seat 233 to move relative to the mounting seat 22 along the second direction, the polishing head disposed on the sliding seat 233 can be driven to move along the second direction, and the second driving assembly 235 can drive the polishing head 232 to rotate around its own axis, in this way, the polishing head 232 can move along the first direction under the driving of the track mechanism 21 through the mounting seat 22, in addition, the polishing head 232 can move along the second direction under the driving of the first driving assembly 231 through the sliding seat 233, and the polishing head 232 can rotate around its own axis under the driving of the second driving assembly 235, so that the polishing work on the glass substrate 4 can be completed.

Wherein, the first driving assembly 231 may include a first motor 2311 and a first transmission mechanism 234, and the first motor 2311 drives the sliding seat 233 to move in the second direction through the first transmission mechanism 234; first drive mechanism 234 includes threaded connection's lead screw 2341 and screw 2342, and lead screw 2341 can set up on mount pad 22 and extend along the second direction rotatoryly around self axis, and screw 2342 links firmly in slide 233, and first motor 2311 and lead screw 2341 drive connection rotate with drive lead screw 2341.

In some embodiments, the mounting seat 22 is further provided with a guiding mechanism for guiding the sliding seat 233 to move along the second direction, the guiding mechanism includes a second sliding rail 238 and a sliding block 237, the second sliding rail 238 is fixedly connected to the mounting seat 22 and extends along the second direction, and the sliding block 237 is fixedly connected to the sliding seat 233. Through the cooperation of the second slide rail 238 and the slide block 237, a certain torque can be borne to assist the slide seat 233 to move more smoothly. The number of the second slide rails 238 may be two, and the two second slide rails 238 are respectively disposed on two sides of the lead screw 2341 to further enhance the stability of the movement of the sliding seat 233, so as to facilitate the grinding process.

In order to enable the mounting seat 22 to move along the first direction, referring to fig. 1 and 2, the rail mechanism 21 may include a first sliding rail 212 extending along the first direction and a third driving assembly 213, the mounting seat 22 is movably disposed on the first sliding rail 212 along the first direction, the third driving assembly 213 includes a second motor 2131, a rack 2132 and a gear, the second motor 2131 is fixedly disposed on the mounting seat 22 and is in driving connection with the gear, and the rack 2132 is in meshing connection with the gear and extends along the first direction. The gear is driven to rotate by the second motor 2131, so that the mounting base 22 is driven to move along the rack 2132 on the first slide rail 212 along the first direction, and the plurality of grinding heads 232 arranged on the mounting base 22 can move along the first direction.

In the specific embodiment provided by the present disclosure, referring to fig. 1, 2 and 5, the detection mechanism 24 may include a fourth driving assembly 241 and a detector 242 respectively connected with the control module 3 by signals, the fourth driving assembly 241 may be configured to drive the detector 242 along the second direction to switch between a detection position where the detector 242 identifies the glass substrate 4 before polishing or the glass substrate 4 after polishing and a reset position, and the control module 3 may be configured to obtain the distance before polishing or the distance after polishing according to the distance between the detection position and the reset position and the distance between the reset position and the measurement position 211 in the second direction. When the fourth driving component 241 drives the detector 242 to move to the detection position along the second direction, the detector 242 can trigger a signal to the control module 3, and the control module 3 can obtain the corresponding distance before grinding and the distance after grinding according to the position information corresponding to the second direction of the detector 242 at the reset position and the detection position before grinding and the distance between the reset position and the measurement position 211. The distance between the reset position and the measurement position 211 may be predetermined or known. In some embodiments, the control module 3 can adjust the trajectory of the coarse grinding head 2321 moving between the two measurement sites 211 according to the pre-grinding distance and the post-grinding distance detected by the detection mechanism 24, and can adjust the trajectory of the fine grinding head 2322 and the polishing grinding head 2323 moving between the two measurement sites 211 according to the position information of the fine grinding head 2322 and the polishing grinding head 2323 relative to the coarse grinding head 2321, so as to ensure that the coarse grinding head 2321, the fine grinding head 2322 and the polishing grinding head 2323 can always maintain the same grinding amount during the grinding process.

Wherein the detector 242 may be, for example, a travel switch, and the fourth driving component 241 may be, for example, a linear motor or an electric push rod. The linear motor or the electric push rod can drive the detector 242 to move along the second direction, and when the detector 242 moves to the detection position, the distance of the detector 242 moving relative to the reset position is fed back to the control module 3, that is, the distance between the detection position and the reset position can be fed back to the control module 3, at this time, when the fourth driving assembly 241 and the detector 242 are installed, the distance between the reset position and the measurement position 211 can be preset or known, and the distance before grinding and the distance after grinding at the measurement position 211 can be obtained according to the distance between the detection position and the reset position and the distance between the reset position and the measurement position 211. The travel switch may be, for example, a contact travel switch, so as to contact an edge of the glass substrate 4 when detecting the position, and further trigger a corresponding signal to the control module 3. In another embodiment, the detector 242 may be a distance measuring sensor, for example, and the disclosure is not limited thereto. The fourth driving assembly 241 may also be a ball screw transmission structure driven by a servo motor or a stepping motor, for example, to drive the detector 242 to move in the second direction, while being capable of accurately feeding back the moving distance of the detector 242 in the second direction. In other embodiments, the detecting mechanism 24 may further include a displacement sensor, such as a linear position sensor, for detecting the displacement of the detector 242 in the second direction, so as to more precisely acquire the moving distance of the detector 242 from the reset position to the detection position.

In some embodiments, referring to fig. 3, a shield 236 is further fixedly connected to the slide seat 233, and the shield 236 is covered outside the polishing head 232 to prevent the polishing head 232 from being accidentally knocked, and to prevent potential safety hazards and environmental pollution caused by splashing of glass debris during polishing.

The control module 3 may be, for example, a PLC controller or a single chip microcomputer, and the disclosure does not specifically limit this. The present disclosure exemplarily illustrates a control principle that the control module 3 controls the track mechanism 21 and the first driving assembly 231 to adjust the trajectory of the polishing head 232 when moving between the two measuring positions 211 according to the values of the two pre-polishing distances and the two post-polishing distances detected by the detecting mechanism 24, as follows.

When the control module 3 controls the track mechanism 21 and the first driving module 231 to adjust the moving track of the grinding head 232 between the two measurement positions 211, referring to fig. 4, the two measurement positions 211 on the left side of the worktable include a first L measurement position 2111 and a second L measurement position 2112 spaced along the first direction, and the two measurement positions 211 on the right side of the worktable 1 include a first R measurement position 2113 and a second R measurement position 2114 spaced along the first direction. A pre-polish distance corresponding to the first L measurement location 2111 is L1, and a post-polish distance corresponding to the first L measurement location 2111 is L1 a; the pre-polish distance corresponding to the second L measurement site 2112 is L2, and the post-polish distance corresponding to the second L measurement site 2112 is L2 b; the pre-polish distance corresponding to the first R measurement site 2113 is R1, and the post-polish distance corresponding to the first R measurement site 2113 is R1 a; the pre-polish distance corresponding to the second R measurement site 2114 is R2, and the post-polish distance corresponding to the second R measurement site 2114 is R2 b; here, the upper side in the drawing direction in fig. 4 is the left side of the glass substrate 4, the lower side in the drawing direction in fig. 4 is the right side of the glass substrate 4, the left side in the drawing direction in fig. 4 is the rear end of the glass substrate 4, and the right side in the drawing direction in fig. 4 is the front end of the glass substrate 4, and during polishing, the polishing head 232 moves from the rear end of the glass substrate 4 toward the front end of the glass substrate 4 to perform polishing. In this way it is possible to obtain,

the glass substrate 4 corresponds to the polishing amount La of the first L measurement site 2111 — L1 a-L1;

the glass substrate 4 is polished by an amount Lb of L2b-L2 corresponding to the second L measurement site 2112;

the glass substrate 4 has a polishing amount Ra ═ R1a-R corresponding to the first R measurement site 2113;

the glass substrate 4 corresponds to the polishing amount Rb of the second R measurement site 2114 — R2 a-R2.

When La equals Lb, it means that the polishing amounts at the respective positions on the left side of the glass substrate 4 are uniform or substantially uniform, or it may mean that the inclination after the left side polishing is uniform with the inclination before the polishing.

When Ra is Rb, the polishing amounts at the right side of the glass substrate 4 may be the same or substantially the same, or the inclination after the right side polishing may be the same as the inclination before the polishing.

When La ═ Lb, Ra ═ Rb, and La ≠ Ra, for example, when both the right and left standard polishing amounts are required to be 0.1mm, the actual polishing amount La ═ Lb ═ 0.15mm, and Ra ═ Rb ═ 0.05mm, this indicates that the left side is polished more than the right side by 0.1mm in total, and therefore, in the next polishing step, the left side polishing mechanism 23 is retracted by 0.05mm in total toward the left side, and the right side is advanced by 0.05mm in total toward the left side, so that both the actual polishing amounts on both sides are required to be 0.1mm in the next polishing step.

The left-side post-polishing inclination degree Kl 2-L1 a-L2b indicates that the front end of the glass substrate 4 is inclined to the left side when the left-side pre-polishing inclination degree Kl 1-L1-L2 is positive, and indicates that the front end of the glass substrate 4 is inclined to the right side when the Kl 1-L1-L2 is negative.

The right-side post-polishing tilt degree Kr2 ═ R1a to R2b, wherein a value of the right-side pre-polishing tilt degree Kr1 ═ R1 to R2 is positive, indicating that the front end of the glass substrate 4 is tilted to the right, and a value of the Kr1 ═ R1 to R2 is negative, indicating that the front end of the glass substrate 4 is tilted to the left.

When Kl1 is Kl2, the inclination degree before left side grinding and after grinding are consistent, and the grinding requirement is met; if Kl1 ≠ Kl2 indicates that the degree of inclination before and after the left side polishing is inconsistent and thus the polishing requirements are not met, and the feed amount needs to be adjusted in the next polishing step, for example, if Kl1 ═ L1-L2 ═ 0.2mm and Kl2 ═ L1a-L2b ═ 0.1mm before the polishing, the polishing head 232 linearly and uniformly retreats toward the left side by Kl1-Kl2 ═ 0.1mm in the process of moving from the first L measurement position 2111 to the second L measurement position 2112 in the next polishing step. Similarly, Kr1-Kr2 indicates that the degree of inclination before right side polishing and after polishing is the same, and the polishing requirements are met. If Kr1 ≠ Kr2 indicates that the degree of inclination before and after right-side polishing is not uniform and thus the polishing requirement is not satisfied, and the feed amount needs to be adjusted in the next polishing step, for example, if Kr1 ═ R1-R2 ═ 0.2mm before polishing and Kr2 ═ R1a-R2b ═ 0.1mm after polishing, then in the next polishing step, since Kr1-Kr2 ═ 0.1mm, the polishing head 232 linearly and uniformly advances toward the left side by 0.1mm during the movement from the first R gauge 2113 to the second R gauge 2114.

If La ≠ Ra, Kl1 ≠ Kl2, Kr1 ≠ Kr2, e.g., La ≠ 0.15mm, Ra ≠ 0.05mm, Kl1 ≠ L1-L2 ═ 0.2mm, Kl2 ═ L1a-L2b ═ 0.1mm, Kr1 ═ R1-R2 ═ 0.2mm, Kr2 ═ R1a-R2b ═ 0.1mm, then in the next process, the feed amount of the left-side polishing mechanism 23 may be first retracted toward the left side by 0.05mm as a whole, and the polishing head 232 may be linearly retracted toward the left side uniformly during the movement from the first L measurement position 2111 to the second L measurement position 2112 by Kl1-Kl2 mm; at the same time, the entire right-side feed amount is advanced 0.05mm to the left, and the polishing head 232 is linearly and uniformly advanced 0.1mm to the left while moving from the first R measurement site 2113 to the second R measurement site 2114.

In summary, the polishing system provided by the present disclosure can ensure that the polishing head 232 always maintains the same polishing amount in the process of polishing the glass substrate 4, avoid the edge defect of the glass substrate 4 caused by inconsistent polishing amount, ensure the quality of the polished glass substrate 4, and has a simple structure and a low manufacturing cost.

The present disclosure illustratively describes the operation of the grinding system, as follows.

When the grinding system works, the glass substrate 4 subjected to pre-positioning is grabbed to the workbench 1 and is fixed to the workbench 1 through a negative pressure air path or a fixing device, the rail mechanism 21 positioned on the left side of the workbench 1 drives the mounting seat 22 to move from the rear end of the glass substrate 4 to the front end of the glass substrate 4 along a first direction, and the fourth driving assembly 241 drives the detector 242 to move along a second direction, so that the detector 242 moves to a reset position and a detection position corresponding to the first L measurement position 2111 and the second L measurement position 2112 respectively; the track mechanism 21 on the right side of the worktable 1 drives the mounting seat 22 to move along the first direction, the fourth driving assembly 241 drives the detector 242 to move from the rear end of the glass substrate 4 to the front end of the glass substrate 4 along the second direction, so that the detector 242 moves to the reset position and the detection position corresponding to the first R measurement position 2113 and the second R measurement position 2114 respectively, after the control module 3 calculates and outputs a program according to the acquired pre-polishing distances corresponding to the first L measurement position 2111, the second L measurement position 2112, the first R measurement position 2113 and the second R measurement position 2114, the track mechanisms 21 on the left side and the right side of the worktable 1 are controlled to drive the mounting seat 22 to move along the first direction according to an output program, the three first driving assemblies 231 on the left side and the right side of the worktable 1 are controlled to drive the corresponding polishing heads 232 to move along the second direction according to the output program, and the three second driving assemblies 235 on the left side and the right side of the worktable 1 are controlled to drive the corresponding polishing heads 232 to rotate according to a set rotation speed . After finishing the grinding of the two sides of one glass substrate 4, the fourth driving assembly 241 drives the detector 242 to switch between the reset position and the detection position of the first L measurement position 2111, the second L measurement position 2112, the first R measurement position 2113 and the second R measurement position 2114 respectively and obtain the corresponding distance after grinding, and the control module 3 performs calculation and verification to adjust the movement track of the grinding head 232 in the subsequent grinding process of the same batch of glass substrates according to the control principle of the control module 3 described above by way of example, so as to improve the grinding quality and the product yield.

On the basis of the above technical solution, referring to fig. 1, the present disclosure also provides a grinding machine comprising the above grinding system, wherein a work table 1 and two grinding devices 2 located at both sides of the work table 1 are both arranged on a frame 5 of the grinding machine. Since the grinder provided by the present disclosure also has the features of the grinding system described above, further description is omitted herein to avoid redundancy.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. A glass substrate grinding system for a grinding machine, the grinding system comprising:

a work table for fixing the glass substrate;

the grinding devices are arranged on two opposite sides of the workbench in a first direction respectively, each grinding device comprises a track mechanism, a mounting seat movably arranged on the track mechanism, and a grinding mechanism and a detection mechanism which are arranged on the mounting seat, the track mechanism is used for driving the mounting seat to move along the first direction, the grinding mechanism comprises a first driving assembly and a grinding head, the first driving assembly is used for driving the grinding head to move along a second direction perpendicular to the first direction so as to be capable of approaching to or separating from a glass substrate on the workbench, two measurement positions which are arranged at intervals in the first direction are preset on the track mechanism, and the detection mechanism is used for detecting the distance between the measurement positions and the glass substrate before grinding on the workbench in the second direction when the detection mechanism moves to the measurement positions along with the mounting seat, and a step for detecting a post-polishing distance in the second direction between the measurement site and the polished glass substrate; and

and the control module is respectively in signal connection with the track mechanism, the detection mechanism and the first driving assembly and is used for controlling the track mechanism and the first driving assembly to adjust the track of the grinding head when the grinding head moves between the two measuring positions according to the values of the two distances before grinding and the two distances after grinding, which are detected by the detection mechanism.

2. The glass substrate grinding system for a grinding machine as claimed in claim 1, wherein the grinding mechanism is plural in number and provided on the mount at intervals in the first direction.

3. The glass substrate grinding system for a grinding machine as claimed in claim 2, wherein the number of the grinding mechanisms is three, and three grinding heads of the three grinding mechanisms are a coarse grinding head, a fine grinding head and a polishing grinding head in order in a direction opposite to an advancing direction of grinding.

4. The glass substrate polishing system of claim 1, wherein the polishing mechanism further comprises a second drive assembly and a carriage, the carriage being movably coupled to the mounting base in the second direction, the first drive assembly being drivingly coupled to the carriage for driving movement of the carriage, the polishing head being rotatably disposed on the carriage about its axis, the second drive assembly being drivingly coupled to the polishing head for driving rotation of the polishing head.

5. The glass substrate grinding system of claim 4, wherein the first drive assembly includes a first motor and a first transmission mechanism, the first motor driving the carriage to move in the second direction via the first transmission mechanism;

6. The glass substrate grinding system for the grinding machine as claimed in claim 4, wherein a guiding mechanism is further disposed on the mounting base, the guiding mechanism is used for guiding the slide base to move along the second direction, the guiding mechanism comprises a second sliding rail and a sliding block, the second sliding rail is slidably engaged with the mounting base and extends along the second direction, and the sliding block is fixedly connected with the slide base.

7. The glass substrate grinding system of claim 1, wherein the track mechanism includes a first slide rail extending in a first direction, the mount being movably disposed on the first slide rail in the first direction, and a third drive assembly including a second motor, a rack, and a gear, the second motor being secured to the mount and being drivingly connected to the gear, the rack being meshingly connected to the gear and extending in the first direction.

8. The glass substrate polishing system for a polishing machine as recited in claim 1, wherein the detection mechanism includes a fourth drive unit and a detector, each signal-connected to the control unit, the fourth drive unit being configured to drive the detector in the second direction to switch between a detection position at which the detector identifies the glass substrate before polishing or the glass substrate after polishing and a reset position at which the control unit is configured to obtain the distance before polishing or the distance after polishing from a distance between the detection position and the reset position and a distance between the reset position and the measurement position in the second direction.

9. The glass substrate grinding system for a grinding machine of claim 8, wherein the detector is a travel switch and the fourth drive component is a linear motor or an electric push rod.

10. A grinding machine characterized by comprising the glass substrate grinding system according to any one of claims 1 to 9.