CN108340222B - Full-automatic polishing machine for light guide plate - Google Patents
Full-automatic polishing machine for light guide plate Download PDFInfo
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- CN108340222B CN108340222B CN201810471639.6A CN201810471639A CN108340222B CN 108340222 B CN108340222 B CN 108340222B CN 201810471639 A CN201810471639 A CN 201810471639A CN 108340222 B CN108340222 B CN 108340222B
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- positioning
- light guide
- guide plate
- workbench
- polishing
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- 238000005498 polishing Methods 0.000 title claims abstract description 83
- 230000007246 mechanism Effects 0.000 claims abstract description 220
- 239000000463 material Substances 0.000 claims abstract description 42
- 238000012545 processing Methods 0.000 claims description 54
- 238000013519 translation Methods 0.000 claims description 43
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 238000007517 polishing process Methods 0.000 abstract description 9
- 230000003139 buffering effect Effects 0.000 abstract description 2
- 125000006850 spacer group Chemical group 0.000 abstract 1
- 238000013459 approach Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 238000005096 rolling process Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B7/00—Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor
- B24B7/10—Single-purpose machines or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
Abstract
The invention discloses a full-automatic polishing machine for a light guide plate, which comprises a workbench, a positioning device, a polishing device and a material taking device, wherein the positioning device, the polishing device and the material taking device are arranged on the workbench; a control system is also provided. The invention adopts a full-automatic operation mode, and each mechanism can return automatically, so that a great deal of manpower is saved, and the efficiency is improved; in addition, through the supporting use of first and second positioning mechanism, adopt the one side that first positioning mechanism or spacer were located to the light guide plate in the both sides face that is opposite to constitute the benchmark location, adopt the another side of second positioning mechanism to constitute the buffering compensation type location, realize the accurate location to the light guide plate in the polishing process.
Description
Technical Field
The invention belongs to the technical field of automatic equipment, and particularly relates to automatic equipment suitable for a polishing process of a light guide plate.
Background
The working principle of the mobile phone screen light guide plate is derived from a liquid crystal display screen of a notebook computer, and the mobile phone screen light guide plate is a high-tech product for converting a linear light source into a surface light source. The optical acrylic (PMMA)/PC is used as a base material, and the high light conductivity of the light guide point is utilized by the backlight module technology of an LCD display screen and a notebook computer, and the light guide point is calculated by the computer, so that the light of the light guide plate is refracted into a uniform light state of a surface light source for manufacturing and forming. Has the bright characteristics of ultra-thin, ultra-bright, uniform light guide, energy conservation, environmental protection, no dark area, durability, difficult yellowing, simple and quick installation and maintenance, and the like.
At present, after the mobile phone light guide plate is produced by injection molding, a single light guide plate is obtained by shearing, the single light guide plate also needs to be polished by a polishing mechanism, the light guide plate is a high-tech product for converting a linear light source into a surface light source, and the side surface and the surface flatness of the light guide plate have important influences on the conversion effect of the linear light source, the brightness, the softness and the like of the light. In the polishing process of the mobile phone light guide plate, the polishing motor belongs to a high-speed running motor, and the rotating speed reaches 20000 revolutions per second, so that the requirement on the position accuracy of a light guide plate product is high, however, the positioning accuracy of a positioning device in the prior art is not ideal, the light guide plate is easy to deviate, the accurate positioning cannot be achieved, and the product quality is affected.
For example, the positioning mechanism disclosed in the chinese patent "positioning mechanism and the conveying device and positioning method using the same" (CN 101279679B) is not accurate enough, and needs to be improved.
Disclosure of Invention
The invention mainly solves the technical problems of providing a full-automatic polishing machine for a light guide plate, which adopts full-automatic operation modes such as automatic positioning, automatic feeding, automatic polishing, automatic material taking and the like, and each mechanism can return automatically, so that a large amount of manpower is saved, an automatic conveying mechanism with stable performance is selected on the mechanism, the cost is reduced, the quality is ensured, and the efficiency is improved; in addition, through the matching use of the first positioning mechanism and the second positioning mechanism, one surface of the two opposite side surfaces of the light guide plate, which is positioned by adopting the first positioning mechanism or the positioning sheet, forms the reference positioning, and the other surface of the second positioning mechanism forms the buffer compensation type positioning, so that the accurate positioning of the light guide plate is realized, the light guide plate is not easy to scratch, the final precision of the product is improved, and the method is particularly suitable for positioning in the polishing process of the mobile phone light guide plate.
In order to solve the technical problems, the invention adopts a technical scheme that: the full-automatic polishing machine for the light guide plate comprises a workbench, a positioning device, a polishing device and a material taking device, wherein the positioning device, the polishing device and the material taking device are arranged on the workbench, and the material taking device is positioned at the downstream of the polishing device; the workbench is provided with at least one rotary platform for fixing the light guide plate, the rotary platform is connected with a rotation driving mechanism for driving the rotary platform to horizontally rotate, and the workbench is also provided with an X-axis driving mechanism capable of driving the rotary platform to reciprocally translate along the X-axis direction and a Y-axis driving mechanism capable of driving the rotary platform to reciprocally translate along the Y-axis direction;
the polishing machine is further provided with a control system, and the positioning device, the polishing device, the material taking device, the rotation driving mechanism, the X-axis driving mechanism and the Y-axis driving mechanism are all electrically connected with the control system.
In order to solve the technical problems, the invention adopts the further technical scheme that: the rotary platform is a carrier plate for placing the light guide plate, the rotary driving mechanism comprises a rotary driving motor and a planetary reducer, an output shaft of the rotary driving motor is connected with an input shaft of the planetary reducer, an output shaft of the planetary reducer is connected with the carrier plate, and the rotary driving motor and the planetary reducer are electrically connected with the control system.
Further, the positioning device comprises a first positioning mechanism and a second positioning mechanism, the light guide plate is a rectangular sheet-shaped light guide plate with three sides needing to be processed, the sides needing to be processed of the light guide plate are defined to be processed surfaces, the first processed surface, the second processed surface and the third processed surface are respectively, the sides needing not to be processed are non-processed surfaces, one of the first processed surface and the third processed surface is provided with the first positioning mechanism, the other is provided with the second positioning mechanism, the second processed surface is provided with the second positioning mechanism, and the non-processed surfaces correspond to the positioning sheets; the first positioning mechanism and the positioning sheet are both reference positioning mechanisms, and the second positioning mechanism is a buffer type positioning mechanism;
positioning the first processing surface and the third processing surface of the light guide plate in the direction of the first processing surface and the third processing surface is realized through a first positioning mechanism and a second positioning mechanism; the locating plate is fixed on the carrier plate, and the second processing surface and the non-processing surface of the light guide plate are located through the second locating mechanism and the locating plate.
Further, the positioning device further comprises a first driving mechanism for driving the first positioning mechanism to be close to or far away from the carrier plate and a second driving mechanism for driving the second positioning mechanism positioned at the third processing surface of the workpiece to be close to or far away from the carrier plate; the first driving mechanism and the second driving mechanism are electrically connected with the control system.
Further, the first driving mechanism comprises a first translation cylinder, a third sliding block and a third sliding rail, and the push rod of the first translation cylinder pushes the third sliding block to slide along the third sliding rail so as to drive the first positioning mechanism to be close to or far away from the carrier plate; the second driving mechanism comprises a second translation cylinder, a fourth sliding block and a fourth sliding rail, and the push rod of the second translation cylinder pushes the fourth sliding block to slide along the fourth sliding rail so as to drive the second positioning mechanism to be close to or far away from the carrier plate; the first translation cylinder and the second translation cylinder are electrically connected with the control system.
Further, the first positioning mechanism comprises a positioning rod, a first fixed block, a first sliding rail, a tension spring, a first base and a micrometer, wherein the first sliding rail is fixed on the first base, the positioning rod is installed on the first fixed block, the first fixed block is fixed on the first sliding block, the micrometer is installed on the first base, a micrometer screw of the micrometer abuts against the first fixed block, one end of the tension spring is installed on the first base, the other end of the tension spring is installed on the first fixed block, and the first sliding block can translate along the first sliding rail;
during positioning, the end part of the positioning rod is propped against the side surface of the light guide plate to be positioned, the knob of the micrometer is rotated to push the first fixing block and the first sliding block to translate along the first sliding rail so as to drive the positioning rod to be close to the light guide plate, and the tension spring is used for moving the first fixing block and the first sliding block backwards so as to drive the positioning rod to be far away from the light guide plate.
Further, the second positioning mechanism comprises a positioning bearing, a positioning block, a second fixed block, a second sliding rail, an elastic piece and a second fixing seat, wherein the positioning bearing is arranged at the end part of the positioning block, the positioning block is arranged on the second fixed block, the second sliding rail is arranged on the second fixing seat, the second sliding block can translate along the second sliding rail, the elastic piece is arranged between the second fixed block and the second fixing seat, and the second sliding block is driven to translate along the second sliding rail through deformation of the elastic piece so as to drive the positioning block and the positioning bearing to be close to or far away from the light guide plate;
the second positioning mechanism further comprises a fine adjustment nut, the fine adjustment nut penetrates through the second fixing seat, and the distance between the second fixing block and the second fixing seat is adjusted by rotating the fine adjustment nut so as to adjust the distance between the positioning bearing and the light guide plate.
Further, the workbench sequentially comprises a first workbench, a second workbench and a third workbench from bottom to top, the rotating platform is installed on the third workbench through a fixed platform, an X-axis driving mechanism capable of driving the second workbench to axially reciprocate and translate is installed between the first workbench and the second workbench, a Y-axis driving mechanism capable of driving the third workbench to axially reciprocate and translate is installed between the second workbench and the third workbench, and the X-axis driving mechanism and the Y-axis driving mechanism are electrically connected with the control system.
Further, the polishing device is provided with at least one group, each group of polishing device comprises a polishing motor, a polishing knife and a polishing motor fixing seat, the polishing motor is fixed on the polishing motor fixing seat, the polishing knife is mounted at the end part of a rotating shaft of the polishing motor, and the polishing motor is electrically connected with the control system.
Further, the material taking device comprises a material taking mechanism and a translation driving mechanism capable of driving the material taking mechanism X to reciprocate in the axial direction, the material taking mechanism comprises a lifting cylinder, a rotary cylinder and a material taking assembly, the lifting cylinder is connected with the rotary cylinder, the material taking assembly is driven to reciprocate through the lifting cylinder, and the material taking assembly is driven to rotate through the rotary cylinder.
The beneficial effects of the invention are as follows:
1. the polishing device does not need to move up and down or horizontally, only needs to move the rotary platform along the X axis, the Y axis or rotate, and can realize the processing of the side surface of the light guide plate, and adopts a full-automatic operation mode, such as automatic positioning, automatic feeding, automatic polishing, automatic material taking and the like, each mechanism can automatically return, a large amount of labor is saved, an automatic conveying mechanism with stable performance is selected on the mechanism, the quality is ensured while the cost is reduced, and the efficiency is improved; in addition, through the matching use of the first positioning mechanism and the second positioning mechanism, the invention is particularly suitable for positioning in the polishing process of the mobile phone light guide plate, because the accurate positioning of the light guide plate is realized, the light guide plate is not easy to scratch, the final precision of the product is improved, and the positioning device is particularly suitable for positioning in the polishing process of the mobile phone light guide plate;
2. the positioning device comprises a first positioning mechanism, a second positioning mechanism and a carrier plate, wherein a light guide plate to be processed is placed on the carrier plate, the light guide plate is a rectangular sheet-shaped light guide plate with three sides to be processed, a first processing surface and a third processing surface of the light guide plate are opposite surfaces, one of the first processing surface and the third processing surface is provided with the first positioning mechanism, the other is provided with the second positioning mechanism, the second processing surface is provided with the second positioning mechanism, and the non-processing surface corresponds to a positioning sheet; the first positioning mechanism and the positioning sheet are both reference positioning mechanisms, and the second positioning mechanism is a buffer type positioning mechanism; through the matched use of the first positioning mechanism and the second positioning mechanism, the two opposite side surfaces of the light guide plate are positioned by adopting the first positioning mechanism or one positioning surface of the positioning sheet to form reference positioning, and the other surface of the second positioning mechanism with the positioning bearing is adopted to form buffer compensation type positioning, so that the accurate positioning of the sheet-shaped light guide plate is realized, the light guide plate is not easy to scratch, the final precision of the product is improved, the polishing device is particularly suitable for positioning in the polishing process of the mobile phone light guide plate, and the full-automatic polishing of the mobile phone light guide plate is accelerated;
3. the first positioning mechanism comprises a positioning rod, a first fixed block, a first sliding rail, a tension spring, a first base and a micrometer, wherein the first fixed block and the first sliding block are pushed to translate along the first sliding rail by rotating a knob of the micrometer so as to drive the positioning rod to be close to the light guide plate, and the first fixed block and the first sliding block are moved backwards by the tension spring so as to drive the positioning rod to be far away from the light guide plate;
4. the second positioning mechanism comprises a positioning bearing, a positioning block, a second fixed block, a second sliding rail, an elastic piece and a second fixed seat, wherein the second fixed block and the second sliding block are pushed by rotating a fine adjustment nut to translate along the second sliding rail so as to drive the positioning block and the positioning bearing to be close to the light guide plate, sliding friction between the first positioning mechanism and the light guide plate is converted into rolling friction through rotation of the positioning bearing, friction force is reduced, and the buffering effect of the elastic piece is added, so that the side surface of the light guide plate is prevented from being scratched, cut and the like, the quality of a product is ensured, the positioning mechanism can be matched with other first positioning mechanisms, the accurate positioning of the sheet-shaped light guide plate is realized, the final precision of the product is improved, and the positioning mechanism is particularly suitable for positioning in the polishing process of the mobile phone light guide plate;
5. the first fixing block of the first positioning mechanism is provided with the positioning holes for the positioning rods to pass through, wherein the distance between the axis of one positioning hole and the first base is larger than that between the axis of the other positioning hole and the first base; secondly, when a plurality of positioning holes are formed, the same side of the sheet-shaped light guide plate can be positioned at least at two points by adopting the first positioning mechanism, so that the operation is simple and convenient, and the positioning accuracy is high;
6. the first inclined plane and the second inclined plane of the positioning head of the positioning rod of the first positioning mechanism are intersected to form the positioning edge, the positioning edge is used for positioning the sheet-shaped light guide plate, and when the side surface of the sheet-shaped light guide plate is uneven, the positioning accuracy of the sheet-shaped light guide plate can be still ensured;
7. the second positioning mechanism is provided with the fine adjustment nut, the distance between the second fixed block and the second fixed seat is adjusted by rotating the fine adjustment nut, so that the distance between the positioning bearing and the light guide plate is adjusted, the accurate positioning of the sheet-shaped light guide plates with different sizes is easier to realize, and the universal type light guide plate is strong;
8. the upper part of the outer ring of the positioning bearing of the second positioning mechanism is outwards protruded to form a circle of limiting boss, when the positioning mechanism is positioned, the outer ring of the positioning bearing is propped against the side surface of the light guide plate, the limiting boss extends to the upper surface of the light guide plate, the limiting boss plays a limiting role, the sheet-shaped light guide plate is prevented from tilting, the positioning precision is improved, and the final quality of a processed product is ensured.
The foregoing description is only an overview of the present invention, and is intended to provide a better understanding of the present invention, as it is embodied in the following description, with reference to the preferred embodiments of the present invention and the accompanying drawings.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention (with the third table in the first positioning mechanism position);
FIG. 2 is a schematic view of the overall structure of the present invention (with the third table in position in the polishing apparatus);
FIG. 3 is a schematic view of the positioning device portion of the present invention;
FIG. 4 is a schematic view of the structure at a rotary stage of the present invention;
FIG. 5 is one of the partial views of FIG. 3;
FIG. 6 is a second (from another perspective) partial view of FIG. 3;
FIG. 7 is one of the schematic structural views of the first positioning mechanism of the present invention;
FIG. 8 is a second schematic structural view of the first positioning mechanism of the present invention;
FIG. 9 is an exploded view of the first positioning mechanism of the present invention;
FIG. 10 is one of the structural schematic diagrams of the second positioning mechanism of the present invention;
FIG. 11 is a second schematic structural view of the second positioning mechanism of the present invention;
FIG. 12 is an exploded view of the second positioning mechanism of the present invention;
FIG. 13 is a schematic view of the structure of the polishing apparatus of the present invention;
the parts in the drawings are marked as follows:
the polishing device 1, the polishing device 2, the polishing motor 21, the rotating shaft 211 of the polishing motor, the polishing motor fixing seat 22, the material taking device 3, the translation driving mechanism 31, the lifting cylinder 32, the revolving cylinder 33, the fixing plate 341, the suction cup 342, the translation driving mechanism fixing seat 35, the vision collecting unit 4, the rotation driving motor 51, the fixing table 52, (the rotating platform, the carrier plate) 50, the positioning plate 501, the suction hole 502, the first positioning mechanism 10, the positioning rod 101, the first inclined plane 1011, the second inclined plane 1012, the positioning edge 1013, the first fixing block 102, the positioning hole 1021, the gap 1022, the first sliding block 103, the sliding rail 104, the tension spring 105, the first base 106, the micrometer 107, the second positioning mechanism 20, the positioning bearing 201, the limiting boss 2011, the positioning block 202, the mounting groove 2021, the kidney-shaped hole 2022, the second fixing block 203 screw hole 2031, second slider 204, second slide rail 205, elastic member 206, second mount 207, fine adjustment nut 208, base 209, bolt 2010, first driving mechanism 40, first translation cylinder 401, third slider 402, third slide rail 403, second driving mechanism 60, second translation cylinder 601, fourth slider 602, fourth slide rail 603, first table 100, first mount 1001, first mount 1002, second mount 1003, second mount 1004, X-axis slide rail 1005, X-axis slider 1006, X-axis servo motor 1007, X-axis screw 1008, second table 200, Y-axis slide rail 2001, Y-axis slider 2002, Y-axis servo motor 2003, third table 300, third mount 3001, fifth slider 3002, third translation cylinder 3003, and third mount 3004.
Detailed Description
The following specific embodiments of the invention are described in order to provide those skilled in the art with an understanding of the present disclosure. The invention may be embodied in other different forms, i.e., modified and changed without departing from the scope of the invention.
Examples: the full-automatic polishing machine for the light guide plate comprises a workbench, a positioning device 1, a polishing device 2 and a material taking device 3, wherein the positioning device 1, the polishing device 2 and the material taking device 3 are arranged on the workbench, and the material taking device is positioned at the downstream of the polishing device; the workbench is provided with at least one rotary platform 50 for fixing the light guide plate, the rotary platform is connected with a rotation driving mechanism for driving the rotary platform to horizontally rotate, and the workbench is also provided with an X-axis driving mechanism capable of driving the rotary platform to reciprocally translate along the X-axis direction and a Y-axis driving mechanism capable of driving the rotary platform to reciprocally translate along the Y-axis direction;
the polishing machine is further provided with a control system, and the positioning device, the polishing device, the material taking device, the rotation driving mechanism, the X-axis driving mechanism and the Y-axis driving mechanism are all electrically connected with the control system.
As shown in fig. 4, the rotary platform is a carrier plate 50 for placing a light guide plate, the rotary driving mechanism includes a rotary driving motor 51 and a planetary reducer (not shown), an output shaft of the rotary driving motor is connected with an input shaft of the planetary reducer, an output shaft of the planetary reducer is connected with the carrier plate, and the rotary driving motor and the planetary reducer are electrically connected with the control system.
As shown in fig. 5 and 6, the positioning device 1 includes a first positioning mechanism 10 and a second positioning mechanism 20, where the light guide plate is a rectangular sheet-shaped light guide plate with three sides to be processed, the sides to be processed of the light guide plate are defined as a processing surface, and are respectively a first processing surface, a second processing surface and a third processing surface, the sides not to be processed are non-processing surfaces, one of the first processing surface and the third processing surface is an opposite surface, the first positioning mechanism is provided on one of the first processing surface and the third processing surface, the second positioning mechanism is provided on the other processing surface, the second positioning mechanism is provided on the second processing surface, and the non-processing surface corresponds to the positioning plate 501; the first positioning mechanism and the positioning sheet are both reference positioning mechanisms, and the second positioning mechanism is a buffer type positioning mechanism;
positioning the first processing surface and the third processing surface of the light guide plate in the direction of the first processing surface and the third processing surface is realized through a first positioning mechanism and a second positioning mechanism; the locating plate is fixed on the carrier plate, and the second processing surface and the non-processing surface of the light guide plate are located through the second locating mechanism and the locating plate.
In this embodiment, the positioning sheet is a metal sheet fixed on the edge of the carrier. The positioning device is provided with two groups, so that the processing efficiency is improved. In this embodiment, the carrier plate has a plurality of adsorption holes 502, the negative pressure vacuum adsorption system is connected to the adsorption holes, and the light guide plate is adsorbed to the carrier plate by negative pressure vacuum.
The positioning device further comprises a first driving mechanism 40 for driving the first positioning mechanism to be close to or far away from the carrier plate and a second driving mechanism 60 for driving the second positioning mechanism to be close to or far away from the carrier plate, wherein the second driving mechanism is positioned at a third processing surface of the workpiece; the first driving mechanism and the second driving mechanism are electrically connected with the control system.
The first driving mechanism 40 includes a first translation cylinder 401, a third slider 402, and a third sliding rail 403, and the push rod of the first translation cylinder pushes the third slider to slide along the third sliding rail so as to drive the first positioning mechanism to approach or depart from the carrier plate; the second driving mechanism 60 includes a second translation cylinder 601, a fourth slider 602, and a fourth sliding rail 603, and the push rod of the second translation cylinder pushes the fourth slider to slide along the fourth sliding rail so as to drive the second positioning mechanism to approach or separate from the carrier plate; the first translation cylinder and the second translation cylinder are electrically connected with the control system. However, the present invention is not limited thereto, and the first driving mechanism and the second driving mechanism may be motor-driven screw drives.
As shown in fig. 7 to 9, the first positioning mechanism includes a positioning rod 101, a first fixed block 102, a first slider 103, a first slide rail 104, a tension spring 105, a first base 106 and a micrometer 107, wherein the first slide rail is fixed on the first base, the positioning rod is mounted on the first fixed block, the first fixed block is fixed on the first slider, the micrometer is mounted on the first base, a micrometer screw of the micrometer abuts against the first fixed block, one end of the tension spring is mounted on the first base, the other end of the tension spring is mounted on the first fixed block, and the first slider can translate along the first slide rail;
during positioning, the end part of the positioning rod is propped against the side surface of the light guide plate to be positioned, the knob of the micrometer is rotated to push the first fixing block and the first sliding block to translate along the first sliding rail so as to drive the positioning rod to be close to the light guide plate, and the tension spring is used for moving the first fixing block and the first sliding block backwards so as to drive the positioning rod to be far away from the light guide plate.
The first fixing block is provided with a plurality of positioning holes 1021 for the positioning rods to pass through, and the axes of all the positioning holes are parallel to the Y-axis direction of the first fixing block.
One end of the positioning rod forms a positioning head, the positioning head comprises a first inclined plane 1011 and a second inclined plane 1012, and the first inclined plane and the second inclined plane intersect and form a positioning edge 1013.
In this embodiment, the positioning rod is a round rod. The precision of the micrometer is 0.01mm. Therefore, the first positioning mechanism can realize the accurate positioning of the light guide plate.
The number of the positioning holes is two.
The distance between the axis of one positioning hole and the first base is larger than the distance between the axis of the other positioning hole and the first base.
The height of the positioning edge is 5-15mm.
A gap 1022 is formed between the body of the first fixing block and the positioning hole, and the positioning rod can move in the positioning hole, pass through the threaded hole of the first fixing block through a bolt and be fixed on the first fixing block by tightening.
The first fixed block and the first sliding block are connected in an integral mode or in a split mode.
The first sliding rail is integrally connected or split-type connected with the first base.
In this embodiment, the first fixing block is connected with the first slider in a split manner, and the first sliding rail is also connected with the first base in a split manner.
In this embodiment, the light guide plate is a mobile phone light guide plate, and the height of the positioning edge is 10mm.
As shown in fig. 10 to 12, the second positioning mechanism includes a positioning bearing 201, a positioning block 202, a second fixed block 203, a second slider 204, a second sliding rail 205, an elastic member 206, and a second fixing seat 207, where the positioning bearing is mounted at an end of the positioning block, the positioning block is mounted on the second fixed block, the second fixed block is mounted on the second slider, the second sliding rail is mounted on the second fixing seat, the second slider can translate along the second sliding rail, the elastic member is mounted between the second fixed block and the second fixing seat, and the deformation of the elastic member drives the second slider to translate along the second sliding rail so as to drive the positioning block and the positioning bearing to approach or separate from the light guide plate;
the second positioning mechanism further comprises a fine adjustment nut 208, the fine adjustment nut penetrates through the second fixing seat, and the distance between the second fixing block and the second fixing seat is adjusted by rotating the fine adjustment nut so as to adjust the distance between the positioning bearing and the light guide plate.
The second positioning mechanism further comprises a bolt 2010, the bolt penetrates through the second fixing seat, one end of the elastic piece is sleeved at the end portion of the bolt, and the other end of the elastic piece is in contact with the second fixing block.
The upper portion of the outer ring of the positioning bearing protrudes outwards to form a circle of limiting boss 2011, and when the positioning bearing is positioned, the outer ring of the positioning bearing abuts against the side face of the light guide plate and the limiting boss extends to the upper surface of the light guide plate. The limiting boss plays a limiting role, prevents the sheet-shaped light guide plate from tilting, improves positioning accuracy, and ensures the final quality of the processed product.
The positioning block, the second fixing block and the second sliding block are integrally connected or split-type connected. In this embodiment, the three are connected in a split manner.
The second fixing seat is installed on the base, and the base, the second fixing seat and the second sliding rail are integrally connected or detachably connected. In this embodiment, the three are connected in a split manner.
The end of the positioning bearing forms a mounting groove 2021 that mates with the positioning bearing.
The mounting groove is a step groove, and the step of the step groove is matched with a circle of limiting boss protruding outwards from the upper part of the outer ring of the positioning bearing.
The height of the limiting boss is 5-15mm, and the protruding length of the limiting boss is 8-15mm.
The protruding length of the limiting boss refers to the distance that the limiting boss protrudes out of the outer surface of the outer ring of the positioning bearing.
The positioning block is provided with a kidney-shaped hole 2022, the upper part of the second fixing block is provided with a plurality of threaded holes 2031, and the positioning block is mounted on the second fixing block through bolts passing through the kidney-shaped hole and the threaded holes.
In this embodiment, the light guide plate is a mobile phone light guide plate, preferably, the height of the limiting boss is 6mm, and the protruding length of the limiting boss is 10mm.
In this embodiment, the elastic member is a spring, but is not limited thereto.
The light guide plate is not limited to the mobile phone light guide plate, and is a sheet light guide plate. If the sheet is longer, multiple sets of the first positioning mechanism and/or the second positioning mechanism of the present invention may be used simultaneously.
As shown in fig. 1, 2, 3, 5 and 6, the working tables are a first working table 100, a second working table 200 and a third working table 300 sequentially from bottom to top, the rotating platform is mounted on the third working table through a fixing table 52, an X axial driving mechanism capable of driving the second working table to axially reciprocate and translate in an X axial direction is mounted between the first working table and the second working table, a Y axial driving mechanism capable of driving the third working table to axially reciprocate and translate in a Y axial direction is mounted between the second working table and the third working table, and the X axial driving mechanism and the Y axial driving mechanism are electrically connected with the control system.
In this embodiment, the first positioning mechanism and the second positioning mechanism disposed at the third processing surface are both mounted on the first workbench, and the second positioning mechanism disposed at the second processing surface is mounted on the third workbench.
The first driving mechanism is mounted on the first workbench, the first positioning mechanism is mounted on a first mounting seat 1001, the first mounting seat is provided with a third sliding block, the third sliding rail is arranged on a first support 1002 mounted on the first workbench, and the first translation cylinder drives the first positioning mechanism to approach or be far away from a first processing surface of the light guide plate through the third sliding block and the third sliding rail;
the second driving mechanism arranged at the third processing surface is arranged on the first workbench, the second positioning mechanism is arranged on a second installation seat 1003, the second installation seat is provided with a fourth sliding block, the fourth sliding rail is arranged on a second support 1004 arranged on the first workbench, and the second translation cylinder drives the second positioning mechanism to approach or be far away from the third processing surface of the light guide plate through the fourth sliding block and the fourth sliding rail;
the second driving mechanism arranged at the second processing surface is arranged on the third workbench, the second positioning mechanism is arranged on the third mounting seat 3001, the third mounting seat is provided with a fifth sliding block 3002 and also provided with a fifth sliding rail (not shown), the third translation cylinder is arranged on a third support 3004 of the third workbench, and the third translation cylinder 3003 drives the second positioning mechanism to be close to or far away from the second processing surface of the light guide plate through the fifth sliding block and the fifth sliding rail;
the X-axis driving mechanism includes an X-axis slide rail 1005, an X-axis slide block 1006, an X-axis servo motor 1007, and an X-axis screw 1008, so as to implement the reciprocating translation of the second workbench along the X-axis direction of the first workbench, where the structure is as follows: the first workbench is provided with the X-axis sliding rail 1005, the bottom of the second workbench is provided with the X-axis sliding block 1006, the X-axis servo motor 1007 and the X-axis screw 1008 are further arranged between the first workbench and the second workbench, and the second workbench realizes reciprocating translation in the X-axis direction of the first workbench under the cooperation of the X-axis servo motor, the X-axis screw, the X-axis sliding rail and the X-axis sliding block;
the X-axis driving mechanism includes a Y-axis sliding rail 2001, a Y-axis sliding block 2002, a Y-axis servo motor 2003 and a Y-axis screw rod (not illustrated in the drawing), and the structure for implementing the reciprocating translation of the third workbench along the Y-axis direction of the second workbench is as follows: the second workbench is provided with a Y-axis sliding rail 2001, the bottom of the third workbench is provided with a Y-axis sliding block 2002, a Y-axis servo motor 2003 and a Y-axis screw rod are further arranged between the second workbench and the third workbench, and the third workbench realizes reciprocating translation in the Y-axis direction of the second workbench under the cooperation of the Y-axis servo motor and the Y-axis screw rod and the cooperation of the Y-axis sliding rail and the Y-axis sliding block.
As shown in fig. 13, the polishing device 2 is provided with at least one group, each group of polishing devices includes a polishing motor 21, a polishing blade (not shown) and a polishing motor fixing base 22, the polishing motor is fixed on the polishing motor fixing base, the polishing blade is mounted on an end portion of a rotating shaft 211 of the polishing motor, and the polishing motor is electrically connected with the control system.
As shown in fig. 1, the material taking device 3 includes a material taking mechanism and a translational driving mechanism 31 capable of driving the material taking mechanism X to reciprocate axially, the material taking mechanism includes a lifting cylinder 32, a revolving cylinder 33 and a material taking assembly, the lifting cylinder is connected with the revolving cylinder, the lifting cylinder drives the material taking assembly to translate up and down, and the revolving cylinder drives the material taking assembly to rotate.
The translation driving mechanism 31 is driven by a cylinder guide rail or a servo motor. The translation driving mechanism is mounted on the workbench through a translation driving mechanism fixing seat 35.
In this embodiment, the material taking assembly includes a fixed plate 341 and a suction cup 342 connected to the fixed plate, where a push rod of the lifting cylinder is connected to the fixed plate, and the suction cup is externally connected to a vacuum device.
As shown in fig. 1, the system further comprises a vision acquisition unit 4, and the vision acquisition unit is electrically connected with the control system. The visual acquisition unit is arranged at the polishing device and can be a camera.
In this embodiment, the rotary platform, the third workbench, the second workbench, the Y axial driving mechanism, the polishing device and the positioning device are all provided with two groups, so that the processing of two light guide plates can be realized at the same time, and the efficiency is improved.
The working principle and working process of the invention are as follows (taking the polishing process of the mobile phone light guide plate as an example):
the mobile phone light guide plate is placed on the rotary product table and the carrier plate, the mobile phone light guide plate starts to work under the control of a preset control system, and the push rod of the first translation cylinder pushes the third sliding block to slide along the third sliding rail so as to drive the first positioning mechanism to be close to the carrier plate; the push rod of the second translation cylinder pushes the fourth slide block to slide along the fourth slide rail so as to drive the second positioning mechanism to be close to the carrier plate, positioning is realized on the light guide plate, the light guide plate is adsorbed on the carrier plate through a negative pressure vacuum system, then the first positioning mechanism and the second positioning mechanism arranged at the third processing surface return, the positioning mechanism arranged at the third processing surface translates along with the third workbench, then the third workbench translates to a polishing station under the driving of the X axial driving mechanism, the polishing motor drives the polishing knife to polish one processing surface of the light guide plate, then the polishing mechanism rotates by 90 degrees under the driving of the X axial driving mechanism and the Y axial driving mechanism and the rotating driving mechanism, the polishing of the second processing surface and the third processing surface of the light guide plate is realized in sequence, the process polishing device is fixed, the translation driving mechanism does not need to translate or lift, and then the translation driving mechanism drives the X axial translation, the lifting cylinder to drive the component to translate up and down, and the material collecting component rotates under the driving of the revolving cylinder, so that the material taking and intelligent polishing are realized;
the debugging process of the positioning device comprises the steps that after the mobile phone light guide plate is placed and the first translation cylinder and the second translation cylinder are driven in place, the first positioning mechanism is adjusted to be located at the general position of equipment through the first base, the position of the positioning rod is pulled, then the positioning rod passes through a threaded hole of the first fixing block through a bolt and is screwed tightly to be fixed on the first fixing block, finally the first fixing block and the first sliding block are pushed to translate along the first sliding rail through a knob of the rotating micrometer so as to drive the positioning rod to be close to a workpiece, and the first fixing block and the first sliding block are moved backwards through a tension spring so as to drive the positioning rod to be far away from the workpiece; and then adjusting the second positioning mechanism to be positioned at the general position of the equipment, pushing the second fixed block and the second sliding block to translate along the second sliding rail by rotating the fine adjustment nut so as to drive the positioning block and the positioning bearing to be close to the workpiece, at the moment, the outer ring of the positioning bearing is propped against the side surface of the workpiece, the limiting boss extends to the upper surface of the workpiece, sliding friction between the first positioning mechanism and the workpiece is converted into rolling friction by the rotation of the positioning bearing, and friction force is reduced, namely, two opposite side surfaces of the workpiece are accurately positioned by a reference positioning mechanism and a buffer type compensation positioning mechanism.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures made by the description of the invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the invention.
Claims (6)
1. A full-automatic polishing machine for a light guide plate is characterized in that: the polishing device comprises a workbench, a positioning device (1), a polishing device (2) and a material taking device (3), wherein the positioning device (1), the polishing device (2) and the material taking device (3) are arranged on the workbench, and the material taking device is positioned at the downstream of the polishing device; the workbench is provided with at least one rotary platform (50) for fixing the light guide plate, and the rotary platform is a carrier plate (50) for placing the light guide plate;
the rotary platform is connected with a rotation driving mechanism for driving the rotary platform to horizontally rotate, and the workbench is also provided with an X-axis driving mechanism capable of driving the rotary platform to reciprocally translate along the X-axis direction and a Y-axis driving mechanism capable of driving the rotary platform to reciprocally translate along the Y-axis direction;
the polishing machine is also provided with a control system, and the positioning device, the polishing device, the material taking device, the rotation driving mechanism, the X-axis driving mechanism and the Y-axis driving mechanism are all electrically connected with the control system;
the positioning device (1) comprises a first positioning mechanism (10) and a second positioning mechanism (20), wherein the light guide plate is a rectangular sheet-shaped light guide plate with three sides needing to be processed, the sides needing to be processed of the light guide plate are defined to be processed surfaces, the first processed surface, the second processed surface and the third processed surface are respectively, the sides needing not to be processed are non-processed surfaces, one of the first processed surface and the third processed surface is an opposite surface, the first positioning mechanism is arranged on one of the first processed surface and the third processed surface, the second positioning mechanism is arranged on the other one of the first processed surface and the third processed surface, and the second positioning mechanism is arranged on the second processed surface, and the non-processed surface corresponds to the positioning sheet (501); the first positioning mechanism and the positioning sheet are both reference positioning mechanisms, and the second positioning mechanism is a buffer type positioning mechanism;
positioning the first processing surface and the third processing surface of the light guide plate in the direction of the first processing surface and the third processing surface is realized through a first positioning mechanism and a second positioning mechanism; the positioning sheet is fixed on the carrier plate, and the positioning of the second processing surface and the non-processing surface of the light guide plate is realized through the second positioning mechanism and the positioning sheet;
the first positioning mechanism comprises a positioning rod (101), a first fixed block (102), a first sliding block (103), a first sliding rail (104), a tension spring (105), a first base (106) and a micrometer (107), wherein the first sliding rail is fixed on the first base, the positioning rod is installed on the first fixed block, the first fixed block is fixed on the first sliding block, the micrometer is installed on the first base, a micrometer screw of the micrometer abuts against the first fixed block, one end of the tension spring is installed on the first base, the other end of the tension spring is installed on the first fixed block, and the first sliding block can translate along the first sliding rail;
when the positioning device is positioned, the end part of the positioning rod is propped against the side surface of the light guide plate to be positioned, the knob of the micrometer is rotated to push the first fixed block and the first sliding block to translate along the first sliding rail so as to drive the positioning rod to be close to the light guide plate, and the tension spring is used for moving the first fixed block and the first sliding block backwards so as to drive the positioning rod to be far away from the light guide plate;
the second positioning mechanism comprises a positioning bearing (201), a positioning block (202), a second fixed block (203), a second sliding block (204), a second sliding rail (205), an elastic piece (206) and a second fixing seat (207), wherein the positioning bearing is arranged at the end part of the positioning block, the positioning block is arranged on the second fixed block, the second sliding rail is arranged on the second fixing seat, the second sliding block can translate along the second sliding rail, the elastic piece is arranged between the second fixed block and the second fixing seat, and the second sliding block is driven to translate along the second sliding rail through the deformation of the elastic piece so as to drive the positioning block and the positioning bearing to be close to or far away from the light guide plate;
the second positioning mechanism further comprises a fine adjustment nut (208), the fine adjustment nut penetrates through the second fixing seat, and the distance between the second fixing block and the second fixing seat is adjusted by rotating the fine adjustment nut so as to adjust the distance between the positioning bearing and the light guide plate;
the workbench is a first workbench (100), a second workbench (200) and a third workbench (300) from bottom to top in sequence, the rotary platform is installed on the third workbench through a fixed platform (52), an X-axis driving mechanism capable of driving the second workbench X to reciprocate axially and horizontally is installed between the first workbench and the second workbench, a Y-axis driving mechanism capable of driving the third workbench Y to reciprocate axially and horizontally is installed between the second workbench and the third workbench, and the X-axis driving mechanism and the Y-axis driving mechanism are electrically connected with the control system.
2. The full-automatic polishing machine for light guide plates according to claim 1, wherein: the rotation driving mechanism comprises a rotation driving motor (51) and a planetary reducer, an output shaft of the rotation driving motor is connected with an input shaft of the planetary reducer, an output shaft of the planetary reducer is connected with the carrier plate, and the rotation driving motor and the planetary reducer are electrically connected with the control system.
3. The full-automatic polishing machine for light guide plates according to claim 1, wherein: the positioning device further comprises a first driving mechanism (40) for driving the first positioning mechanism to be close to or far away from the carrier plate and a second driving mechanism (60) for driving the second positioning mechanism to be close to or far away from the carrier plate, wherein the second driving mechanism is positioned at a third processing surface of the workpiece; the first driving mechanism and the second driving mechanism are electrically connected with the control system.
4. The full-automatic polishing machine for light guide plates according to claim 3, wherein: the first driving mechanism (40) comprises a first translation cylinder (401), a third sliding block (402) and a third sliding rail (403), and a push rod of the first translation cylinder pushes the third sliding block to slide along the third sliding rail so as to drive the first positioning mechanism to be close to or far away from the carrier plate; the second driving mechanism (60) comprises a second translation air cylinder (601), a fourth sliding block (602) and a fourth sliding rail (603), and a push rod of the second translation air cylinder pushes the fourth sliding block to slide along the fourth sliding rail so as to drive the second positioning mechanism to be close to or far away from the carrier plate; the first translation cylinder and the second translation cylinder are electrically connected with the control system.
5. The full-automatic polishing machine for light guide plates according to claim 1, wherein: the polishing device (2) is provided with at least one group, each group of polishing device comprises a polishing motor (21), a polishing knife and a polishing motor fixing seat (22), the polishing motor is fixed on the polishing motor fixing seat, the polishing knife is mounted at the end part of a rotating shaft (211) of the polishing motor, and the polishing motor is electrically connected with the control system.
6. The full-automatic polishing machine for light guide plates according to claim 1, wherein: the material taking device (3) comprises a material taking mechanism and a translation driving mechanism (31) capable of driving the material taking mechanism X to reciprocate in the axial direction, the material taking mechanism comprises a lifting cylinder (32), a rotary cylinder (33) and a material taking assembly, the lifting cylinder is connected with the rotary cylinder, the material taking assembly is driven to reciprocate through the lifting cylinder, and the material taking assembly is driven to rotate through the rotary cylinder.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810471639.6A CN108340222B (en) | 2018-05-17 | 2018-05-17 | Full-automatic polishing machine for light guide plate |
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| CN201810471639.6A CN108340222B (en) | 2018-05-17 | 2018-05-17 | Full-automatic polishing machine for light guide plate |
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| CN108340222B true CN108340222B (en) | 2024-03-29 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN208246446U (en) * | 2018-05-17 | 2018-12-18 | 昆山市恒达精密机械工业有限公司 | light guide plate full-automatic polishing machine |
| CN108838861A (en) * | 2018-09-06 | 2018-11-20 | 浙江欧易新能源有限公司 | A kind of light guide plate burnishing device |
| CN112946811A (en) * | 2021-02-04 | 2021-06-11 | 东莞市元立电子科技有限公司 | Light guide plate and full-automatic numerical control optical edge polishing process thereof |
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