WO2019218636A1

WO2019218636A1 - Full-automatic light guide plate polishing machine

Info

Publication number: WO2019218636A1
Application number: PCT/CN2018/117609
Authority: WO
Inventors: 范光得
Original assignee: 昆山市恒达精密机械工业有限公司
Priority date: 2018-05-17
Filing date: 2018-11-27
Publication date: 2019-11-21
Also published as: CN208246446U

Abstract

A full-automatic light guide plate polishing machine, comprising a workbench as well as a locating device (1), a polishing device (2), and a reclaiming device (3) disposed on the workbench. The workbench is mounted with at least one rotary platform for fixing a light guide plate; the rotary platform is connected to a rotation driving mechanism for driving the rotary platform to rotate horizontally; the workbench is further mounted with an X-axis driving mechanism capable of driving the rotary platform to reciprocate along the X-axis direction and a Y-axis driving mechanism capable of driving the rotary platform to reciprocate along the Y-axis direction; a control system is further provided. The full-automatic light guide plate polishing machine adopts a full-automatic operation mode, where all mechanisms can automatically return, so that the labor costs are saved and the efficiency is improved; in addition, by using first and second locating mechanisms (10, 20) in concert, reference locating is formed on one surface, which is located by using the first locating mechanism (10) or a locating plate, in two opposite side surfaces of the light guide plate, and buffer compensation type locating is formed on the other surface where the second locating mechanism (20) is used, thereby achieving accurate locating of the light guide plate in a polishing process.

Description

Light guide plate automatic polishing machine

Technical field

The utility model belongs to the technical field of automation equipment, in particular to an automation device suitable for polishing process of a light guide plate.

Background technique

The working principle of the mobile phone screen light guide plate is derived from the liquid crystal display of the notebook computer, and is a high-tech product that converts the line light source into a surface light source. Optical grade acrylic (PMMA)/PC is the substrate. Using the backlight module technology of LCD display and notebook computer, through the high light transmittance of the light guide point, the light guide plate is refracted by the computer to calculate the light guide point. The surface light source is formed in a uniform state. It has the characteristics of ultra-thin, super bright, uniform light guiding, energy saving, environmental protection, no dark area, durable, not easy to yellow, simple and quick installation and maintenance.

At present, after the light guide plate of the mobile phone is produced by injection molding, a single light guide plate is obtained by shearing, and a single light guide plate needs to be polished by a polishing mechanism. The light guide plate is a high-tech product for converting a line light source into a surface light source, and the light guide plate is The side and surface flatness have an important influence on the conversion effect of the line source and the brightness and softness of the light. In the polishing process of the light guide plate of the mobile phone, since the polishing motor belongs to a high-speed running motor and the rotational speed reaches 20,000 rpm, the positional accuracy of the light guide plate product is high. However, the positioning accuracy of the positioning device in the prior art is not ideal, and the light guide plate It is easy to offset, and it is impossible to accurately position and affect product quality.

For example, the positioning mechanism disclosed by the Chinese patent "positioning mechanism and its conveying device and positioning method" (CN101279679B) is not accurate enough and needs to be improved.

Utility model content

The technical problem mainly solved by the utility model is to provide a full-automatic polishing machine for a light guide plate, which adopts a fully automatic operation mode, such as automatic positioning, automatic feeding, automatic polishing and automatic reclaiming, etc., each mechanism can automatically return to the position, saving a large amount of Manually, an automatic transmission mechanism with stable performance is selected in the mechanism to reduce the cost while ensuring quality and improving efficiency; in addition, the utility model adopts the use of the first positioning mechanism and the second positioning mechanism to adopt the opposite sides of the light guide plate. The first positioning mechanism or the positioning surface of the positioning piece constitutes a reference positioning, and the other side of the second positioning mechanism constitutes a buffer compensation type positioning, thereby realizing accurate positioning of the light guide plate, and not easily scratching the light guide plate, thereby improving the final precision of the product, in particular Suitable for positioning during polishing of mobile phone light guides.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a light guide plate automatic polishing machine, comprising a work table and a positioning device, a polishing device and a reclaiming device provided on the work table, the taking a feeding device is located downstream of the polishing device; the table is mounted with at least one rotating platform for fixing the light guiding plate, and the rotating platform is connected with a rotating driving mechanism for driving the rotating platform to rotate horizontally, and the working table is further An X-axis driving mechanism capable of driving the rotating platform to reciprocally translate in the X-axis direction and a Y-axis driving mechanism capable of driving the rotating platform to reciprocally translate in the Y-axis direction are mounted;

The polishing machine is further provided with a control system, the positioning device, the polishing device, the reclaiming device, the rotating driving mechanism, the X-axis driving mechanism and the Y-axis driving mechanism are both The control system is electrically connected.

In order to solve the above technical problem, the present invention adopts a further technical solution: the rotating platform is a carrier for placing a light guide plate, and the rotating driving mechanism comprises a rotating driving motor and a planetary reducer, and the rotating driving motor An output shaft is coupled to an input shaft of the planetary reducer, an output shaft of the planetary reducer is coupled to the carrier, and the rotary drive motor and the planetary reducer are both electrically coupled to the control system.

Further, the positioning device includes a first positioning mechanism and a second positioning mechanism, wherein the light guide plate is a rectangular sheet-shaped light guide plate to be processed on three sides, and the side surface to be processed by the light guide plate is defined as a processing surface, and The first processing surface, the second processing surface and the third processing surface are respectively a non-machining surface, and the first processing surface and the third processing surface are opposite surfaces, one of which is provided with the first positioning a second positioning mechanism is disposed on the third processing surface, and the second positioning mechanism is disposed on the third processing surface, where the non-machining surface corresponds to the positioning piece; the first positioning mechanism and the positioning piece are reference a positioning mechanism, the second positioning mechanism is a buffer type positioning mechanism;

Positioning of the first processing surface and the second processing surface of the light guide plate by the first positioning mechanism and the second positioning mechanism; the positioning piece is fixed to the carrier, and the second positioning mechanism is adopted And positioning the strip to realize positioning of the second processed surface and the non-machined surface of the light guide plate.

Further, the positioning device further includes a first driving mechanism that drives the first positioning mechanism toward or away from the carrier and a second positioning mechanism that drives the third processing surface of the workpiece to approach or a second drive mechanism remote from the carrier; both the first drive mechanism and the second drive mechanism are electrically coupled to the control system.

Further, the first driving mechanism includes a first translation cylinder, a third slider, and a third slide rail, and the third slider slides along the third slide rail by the push rod of the first translation cylinder Driving the first positioning mechanism to be close to or away from the carrier; the second driving mechanism includes a second translation cylinder, a fourth slider and a fourth slide, and pushing the fourth through the push rod of the second translation cylinder A slider slides along the fourth rail to drive the second positioning mechanism toward or away from the carrier; both the first translation cylinder and the second translation cylinder are electrically connected to the control system.

Further, the first positioning mechanism includes a positioning rod, a first fixing block, a first sliding block, a first sliding rail, a tension spring, a first base and a micrometer, and the first sliding rail is fixed to the first a base, the positioning rod is mounted on the first fixing block, the first fixing block is fixed to the first slider, the micrometer is mounted on the first base, and the micrometer screw of the micrometer is offset The first fixing block has one end mounted on the first base and the other end mounted on the first fixing block, and the first sliding block is translatable along the first sliding rail;

When positioning, the end of the positioning rod abuts against the side of the light guide plate to be positioned, and the first fixed block and the first sliding block are pushed along the first sliding rail to rotate the positioning rod by rotating the knob of the micrometer Adjacent to the light guide plate, the first fixed block and the first slider are moved backward by the tension spring to drive the positioning rod away from the light guide plate.

Further, the second positioning mechanism includes a positioning bearing, a positioning block, a second fixing block, a second sliding block, a second sliding rail, an elastic member and a second fixing seat, and the positioning bearing is mounted on the positioning block The second positioning block is mounted on the second fixing block, the second fixing block is mounted on the second sliding block, and the second sliding rail is mounted on the second fixing seat, the second The slider is translatable along the second sliding rail, the elastic member is mounted between the second fixing block and the second fixing seat, and the second slider is driven along the second by the deformation of the elastic member The sliding rail translates to drive the positioning block and the positioning bearing to be close to or away from the light guide plate;

The first positioning mechanism further includes a trimming nut, the trimming nut passes through the second fixing seat, and the distance between the second fixing block and the second fixing seat is adjusted by rotating the trimming nut to adjust the positioning bearing and The distance between the light guide plates.

Further, the workbench is a first workbench, a second workbench, and a third workbench in order from bottom to top, and the rotary platform is installed on the third workbench through a fixed platform, the first work An X-axis driving mechanism capable of driving the second table X to reciprocally reciprocally translate is mounted between the table and the second table, and a mounting between the second table and the third table is A Y-axis drive mechanism that drives the third table Y to reciprocally translate axially, the X-axis drive mechanism and the Y-axis drive mechanism are both electrically coupled to the control system.

Further, the polishing apparatus is provided with at least one set, each set of polishing apparatus includes a polishing motor, a polishing blade and a polishing motor mount, the polishing motor is fixed to the polishing motor mount, and the polishing cutter is mounted on An end of the rotating shaft of the polishing motor, the polishing motor being electrically connected to the control system.

Further, the reclaiming device includes a reclaiming mechanism and a translating drive mechanism capable of driving the retracting mechanism X to reciprocally translate, the reclaiming mechanism including a lifting cylinder, a rotary cylinder and a reclaiming assembly, the lifting A cylinder is coupled to the rotary cylinder, and the take-up assembly is driven to move up and down by the lift cylinder, and the take-up assembly is driven to rotate by the rotary cylinder.

The beneficial effects of the utility model are:

1. The utility model comprises a worktable and a positioning device, a polishing device and a reclaiming device arranged on the worktable. The worktable is equipped with at least one rotating platform for fixing the light guide plate, and the rotating platform is connected with a rotary drive for driving the horizontal rotation thereof. The mechanism, the working table is further equipped with an X-axis driving mechanism capable of driving the rotating platform to reciprocally translate in the X-axis direction and a Y-axis driving mechanism capable of driving the rotating platform to reciprocally translate in the Y-axis direction, and the polishing device does not need to move up or down or horizontally. Only need to rotate the platform along the X-axis, Y-axis or rotation to realize the processing of the side of the light guide plate, and adopt fully automatic operation mode, such as automatic positioning, automatic feeding, automatic polishing and automatic reclaiming, etc. Returning position, saving a lot of labor, selecting an automatic transmission mechanism with stable performance in the mechanism, reducing the cost while ensuring the quality and improving the efficiency; in addition, the utility model uses the first positioning mechanism and the second positioning mechanism to match the light guide plate. The two sides, wherein the first positioning mechanism or the positioning surface of the positioning piece constitutes a reference positioning, Constituting the buffer compensated positioning the other surface of the second positioning means for precise positioning of the light guide plate, and difficult to scratch the light guide plate, to improve the accuracy of the final product, particularly suitable for the polishing process of positioning the light guide plate in the phone;

2. The positioning device of the present invention comprises a first positioning mechanism, a second positioning mechanism and a carrier plate, the light guide plate to be processed is placed on the carrier plate, and the light guide plate is a rectangular sheet-shaped light guide plate to be processed on three sides, and the light guide plate is The first processing surface and the third processing surface are opposite surfaces, one of which is provided with a first positioning mechanism, the other is provided with a second positioning mechanism, the third processing surface is provided with a second positioning mechanism, and the non-machined surface corresponds to the positioning piece The first positioning mechanism and the positioning piece are both a reference positioning mechanism, and the second positioning mechanism is a buffer type positioning mechanism; and the first side of the light guide plate is opposite to the two sides of the light guide plate by using the first positioning mechanism and the second positioning mechanism; The positioning of the positioning mechanism or the positioning piece constitutes a reference positioning, and the other side of the second positioning mechanism with the positioning bearing constitutes a buffer compensation type positioning, thereby realizing precise positioning of the sheet-shaped light guide plate, and is not easy to scratch the light guide plate, thereby improving the product. The final precision is especially suitable for the positioning of the light guide plate of the mobile phone during the polishing process, and accelerates the fully automated polishing of the light guide plate of the mobile phone;

The first positioning mechanism of the utility model comprises a positioning rod, a first fixing block, a first sliding block, a first sliding rail, a tension spring, a first base and a micrometer, and the first fixing block is pushed by a knob of a rotary micrometer and The first slider translates along the first sliding rail to drive the positioning rod close to the light guide plate, and moves the first fixing block and the first slider back by the tension spring to drive the positioning rod away from the light guide plate, and can be matched with other first positioning mechanisms. Use, to achieve precise positioning of the sheet-shaped light guide plate, improve the final precision of the product, especially suitable for positioning in the polishing process of the light guide plate of the mobile phone;

The second positioning mechanism of the present invention comprises a positioning bearing, a positioning block, a second fixing block, a second sliding block, a second sliding rail, an elastic member and a second fixing seat, and the second fixing block is pushed by rotating the fine adjustment nut And the second slider is translated along the second sliding rail to drive the positioning block and the positioning bearing to be close to the light guide plate, and the sliding friction between the first positioning mechanism and the light guide plate is converted into rolling friction by the rotation of the positioning bearing, and the friction is reduced. In addition, the cushioning function of the elastic member prevents the side of the light guide plate from being scratched and cut, and ensures the product quality. It can be used together with other first positioning mechanisms to achieve accurate positioning of the sheet-shaped light guide plate and improve the product. The final precision is especially suitable for the positioning during the polishing process of the light guide plate of the mobile phone;

5. The first fixing block of the first positioning mechanism of the present invention has a positioning hole through which the positioning rod passes, wherein the distance of the axis of one positioning hole from the first base is greater than the distance of the axis of the other positioning hole from the first base. First, it is easier to achieve precise positioning of the sheet-shaped light guide plates of different thicknesses, and the universal type is strong; second, when a plurality of positioning holes are provided, in the process of positioning the sheet-shaped light guide plate, the same side only needs to adopt one of the utility models. The first positioning mechanism can be positioned at least two points, the operation is simple, and the positioning accuracy is high;

6. The first inclined surface and the second inclined surface of the positioning head of the positioning rod of the first positioning mechanism of the present invention intersect and form a positioning edge, and the sheet-shaped light guide plate is positioned by the positioning edge, and the side of the sheet-shaped light guide plate is uneven , still able to guarantee its positioning accuracy;

7. The second positioning mechanism of the present invention is provided with a fine adjustment nut, and the distance between the second fixed block and the second fixed seat is adjusted by rotating the fine adjustment nut to adjust the distance between the positioning bearing and the light guide plate, which is easier to implement. Precise positioning of different size sheet-shaped light guide plates, universal type;

8. The upper part of the outer ring of the positioning bearing of the second positioning mechanism of the utility model protrudes outward to form a ring-shaped limiting boss. When positioning, the outer ring of the positioning bearing abuts against the side of the light guide plate and the limiting boss extends. To the upper surface of the light guide plate, the limiting boss acts as a limit to prevent the sheet-shaped light guide plate from lifting, improving the positioning accuracy and ensuring the final quality of the processed product.

The above description is only an overview of the technical solutions of the present invention. In order to more clearly understand the technical means of the present invention, and can be implemented in accordance with the contents of the specification, the following detailed description of the preferred embodiments of the present invention and with reference to the accompanying drawings Rear.

DRAWINGS

Figure 1 is a schematic view of the overall structure of the utility model (when the third workbench is located at the position of the first positioning mechanism);

Figure 2 is a schematic view of the overall structure of the utility model (when the third working table is located at the position of the polishing device);

3 is a schematic structural view of a positioning device portion of the present invention;

4 is a schematic structural view of a rotating platform of the present invention;

Figure 5 is a partial view of Figure 3;

Figure 6 is a partial view of Figure 3 (from another perspective);

Figure 7 is a schematic structural view of the first positioning mechanism of the present invention;

Figure 8 is a second schematic structural view of the first positioning mechanism of the utility model;

9 is a schematic exploded view of the first positioning mechanism of the present invention;

Figure 10 is a schematic structural view of the second positioning mechanism of the present invention;

Figure 11 is a second schematic structural view of the second positioning mechanism of the utility model;

Figure 12 is a schematic exploded view of the second positioning mechanism of the present invention;

Figure 13 is a schematic structural view of a polishing apparatus of the present invention;

The parts in the drawing are marked as follows:

Positioning device 1, polishing device 2, polishing motor 21, rotating shaft 211 of polishing motor, polishing motor mount 22, take-up device 3, translation drive mechanism 31, lift cylinder 32, rotary cylinder 33, fixed plate 341, suction cup 342, translation The driving mechanism fixing base 35, the visual collecting unit 4, the rotating driving motor 51, the fixing table 52, the carrier 50, the positioning piece 501, the adsorption hole 502, the first positioning mechanism 10, the positioning rod 101, the first inclined surface 1011, and the second inclined surface 1012, positioning edge 1013, first fixing block 102, positioning hole 1021, slot 1022, first slider 103, slide rail 104, tension spring 105, first base 106, micrometer 107, second positioning mechanism 20, positioning bearing 201 a limiting boss 2011, a positioning block 202, a mounting groove 2021, a waist hole 2022, a second fixing block 203, a threaded hole 2031, a second slider 204, a second sliding rail 205, an elastic member 206, and a second fixing seat 207, fine adjustment nut 208, base 209, bolt 2010, first drive mechanism 40, first translation cylinder 401, third slider 402, third slide rail 403, second drive mechanism 60, second translation cylinder 601, fourth Slider 602, fourth slide rail 603, first workbench 100, A mounting base 1001, a first mount 1002, a second mount 1003, a second mount 1004, an X-axis slide rail 1005, an X-axis slide 1006, an X-axis servo motor 1007, and an X-axis screw 1008 , second table 200, Y-axis slide rail 2001, Y-axis slide block 2002, Y-axis servo motor 2003, third table 300, third mount 3001, fifth block 3002, third translation cylinder 3003 and third stand 3004.

Detailed ways

Specific embodiments of the present invention will be described below by way of specific embodiments, and those skilled in the art can readily understand the advantages and functions of the present invention from the disclosure of the present disclosure. The invention may be embodied in other different forms, and various modifications and changes can be made without departing from the scope of the invention.

Embodiment: A light guide plate automatic polishing machine, as shown in FIG. 1 to FIG. 13, includes a work table, a positioning device 1 disposed on the work table, a polishing device 2, and a reclaiming device 3, the reclaiming device Located at the downstream of the polishing apparatus; the table is mounted with at least one rotating platform for fixing the light guide plate, and the rotating platform is connected with a rotating driving mechanism for driving the rotating platform to rotate horizontally, and the working table is also installed with An X-axis driving mechanism capable of driving the rotating platform to reciprocally translate in the X-axis direction and a Y-axis driving mechanism capable of driving the rotating platform to reciprocally translate in the Y-axis direction;

As shown in FIG. 4, the rotating platform is a carrier 50 for placing a light guide plate, and the rotation driving mechanism includes a rotation driving motor 51 and a planetary speed reducer (not shown), and the output shaft of the rotating driving motor is An input shaft of the planetary reducer is connected, an output shaft of the planetary reducer is coupled to the carrier, and the rotary drive motor and the planetary reducer are both electrically connected to the control system.

As shown in FIG. 5 and FIG. 6 , the positioning device 1 includes a first positioning mechanism 10 and a second positioning mechanism 20 . The light guide plate is a rectangular sheet-shaped light guide plate to be processed on three sides, and the light guide plate is required to be defined. The processed side surface is a processing surface, and is respectively a first processing surface, a second processing surface and a third processing surface, and the side surface that does not need to be processed is a non-machining surface, and the first processing surface and the third processing surface are opposite surfaces, wherein The first positioning mechanism is provided, and the second positioning mechanism is provided. The third processing surface is provided with the second positioning mechanism, and the non-processing surface corresponds to the positioning piece 501; the first positioning The mechanism and the positioning piece are both a reference positioning mechanism, and the second positioning mechanism is a buffer type positioning mechanism;

In this embodiment, the positioning piece is a metal piece fixed to an edge of the carrier. The positioning device is provided with two groups to improve processing efficiency. In this embodiment, the carrier has a plurality of adsorption holes 502, and a vacuum suction system is connected to the adsorption holes, and the light guide plate is adsorbed to the carrier by vacuum under vacuum.

The positioning device further includes a first driving mechanism 40 that drives the first positioning mechanism toward or away from the carrier and a second positioning mechanism that drives the third processing surface of the workpiece to be near or away from the a second drive mechanism 60 of the carrier; both the first drive mechanism and the second drive mechanism are electrically coupled to the control system.

The first driving mechanism 40 includes a first translation cylinder 401, a third slider 402, and a third slide rail 403, and the third slider slides along the third slide rail by the push rod of the first translation cylinder Driving the first positioning mechanism to be close to or away from the carrier; the second driving mechanism 60 includes a second translation cylinder 601, a fourth slider 602 and a fourth rail 603, and the pushing of the second translation cylinder The rod pushes the fourth slider to slide along the fourth rail to drive the second positioning mechanism toward or away from the carrier; the first translation cylinder and the second translation cylinder are electrically connected to the control system connection. However, the first driving mechanism and the second driving mechanism may also be motor driven screw drives.

As shown in FIG. 7 to FIG. 9 , the first positioning mechanism includes a positioning rod 101 , a first fixing block 102 , a first sliding block 103 , a first sliding rail 104 , a tension spring 105 , a first base 106 , and a micrometer 107 . The first slide rail is fixed to the first base, the positioning rod is mounted on the first fixed block, the first fixed block is fixed to the first slider, and the micrometer is mounted on the first a base and the micrometer screw of the micrometer is abutted against the first fixing block, one end of the tension spring is mounted on the first base and the other end is mounted on the first fixing block, the first slider Being capable of translating along the first slide rail;

The first fixing block has a plurality of positioning holes 1021 through which the positioning rod passes, 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, and the positioning head includes a first inclined surface 1011 and a second inclined surface 1012, and the first inclined surface and the second inclined surface intersect and form a positioning edge 1013.

In this embodiment, the positioning rod is a round rod. The accuracy of the micrometer is 0.01 mm. Therefore, the first positioning mechanism can achieve precise positioning of the light guide plate.

The positioning holes have two.

The distance of the axis of the positioning hole from the first base is greater than the distance of the axis of the other positioning hole from the first base.

The height of the positioning edge is 5-15 mm.

a gap 1022 is formed between the body of the first fixing block and the positioning hole, and the positioning rod is movable in the positioning hole and passes through the threaded hole of the first fixing block by bolts and tightens to fix the positioning rod to The first fixed block.

The first fixing block is integrally connected or separated from the first slider.

The first sliding rail is integrally connected or separated from the first base.

In this embodiment, the first fixing block is connected to the first slider in a split manner, and the first sliding rail and the first base are also connected in a split manner.

In this embodiment, the light guide plate is a light guide plate of the mobile phone, and the height of the positioning edge is 10 mm.

As shown in FIGS. 10 to 12, the second positioning mechanism includes a positioning bearing 201, a positioning block 202, a second fixing block 203, a second slider 204, a second sliding rail 205, an elastic member 206, and a second fixing seat. 207, the positioning bearing is mounted on an end of the positioning block, the positioning block is mounted on the second fixing block, the second fixing block is mounted on the second sliding block, and the second sliding rail is installed The second slider is translatable along the second sliding rail, and the elastic member is mounted between the second fixing block and the second fixing seat through the elastic member Deformation drives the second slider to translate along the second sliding rail to drive the positioning block and the positioning bearing toward or away from the light guide plate;

The first positioning mechanism further includes a trimming nut 208. The trimming nut passes through the second fixing seat, and the distance between the second fixing block and the second fixing seat is adjusted by rotating the trimming nut to adjust the positioning bearing. The distance from the light guide plate.

The second positioning mechanism further includes a bolt 2010, the bolt passes through the second fixing seat, and one end of the elastic member is sleeved at an end of the bolt, and the other end is in contact with the second fixing block.

An upper portion of the outer ring of the positioning bearing protrudes outward to form a ring-shaped limiting boss 2011. When positioning, the outer ring of the positioning bearing abuts against a side surface of the light guiding plate and the limiting boss extends to the guide The upper surface of the light panel. The limiting boss acts as a limit to prevent the sheet-shaped light guide from lifting up, improve the positioning accuracy, and ensure the final quality of the processed product.

The positioning block, the second fixing block and the second slider are an integral connection or a split connection. In this embodiment, the above three are connected separately.

The base 209 is further included, the second fixing base is mounted on the base, and the base, the second fixing seat and the second sliding rail are integrally connected or separated. In this embodiment, the above three are connected separately.

The end of the locating bearing forms a mounting slot 2021 that mates with the locating bearing.

The mounting groove is a stepped groove, and the step of the step groove is matched with a ring-shaped limiting boss protruding outward from an upper portion of the outer ring of the positioning bearing.

The height of the limiting boss is 5-15 mm, and the length of the limiting boss is 8-15 mm.

The length of the limiting boss protruding refers to the distance of the limiting boss from the outer surface of the outer ring of the positioning bearing.

The positioning block has a waist hole 2022, and an upper portion of the second fixing block has a plurality of threaded holes 2031 through which the positioning block is mounted by a bolt through the waist hole and the threaded hole.

In this embodiment, the light guide plate is a light guide plate of the mobile phone. Preferably, the height of the limiting protrusion is 6 mm, and the length of the limit protrusion is 10 mm.

In this embodiment, the elastic member is a spring, but is not limited thereto.

The light guide plate is not limited to the light guide plate of the mobile phone, and may be a sheet-shaped 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 can be used simultaneously.

As shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 5 and FIG. 6 , the working platform is a first working table 100 , a second working table 200 and a third working table 300 in order from bottom to top. Mounted to the third table by a fixing table 52, and an X-axis driving mechanism capable of driving the second table X to reciprocally translate axially is mounted between the first table and the second table. A Y-axis driving mechanism capable of driving the third table Y to reciprocally translate axially is mounted between the second table and the third table, the X-axis driving mechanism and the Y-axis The drive mechanisms are all electrically connected to 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 on the second processing surface is mounted on the second positioning mechanism. Third workbench.

The first driving mechanism is mounted on the first working platform, the first positioning mechanism is mounted on the first mounting seat 1001, the first mounting seat is provided with the third sliding block, and the third sliding rail is disposed on the first sliding block a first mount 1002 mounted on the first table, the first translating cylinder driving the first positioning mechanism to approach or away from the first processing surface of the light guide plate through the third slider and the third slide rail;

The second driving mechanism disposed at the third processing surface is mounted on the first working table, the second positioning mechanism is mounted on the second mounting seat 1003, and the second mounting seat is provided with the first a fourth slider, the fourth slide rail is disposed on a second seat 1004 mounted on the first workbench, and the second translation cylinder drives the second positioning mechanism to approach or through the fourth slider and the fourth slide rail Far from the third processing surface of the light guide plate;

a second driving mechanism disposed at the second processing surface is mounted on the third working platform, the second positioning mechanism is mounted on the third mounting seat 3001, and the third mounting seat is provided with a fifth sliding block 3002. A fifth slide rail (not shown) is provided, and the third translation cylinder is mounted on the third mount 3004 of the third workbench, and the third translation cylinder 3003 drives the second positioning mechanism through the fifth slider and the third a fifth sliding rail is adjacent to or away from the second processing surface of the light guide plate;

The X-axis drive 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 rod 1008, and the second table is implemented along the first workbench. The structure of the X-axis direction reciprocating translation is: the first workbench is provided with the X-axis slide rail 1005, and the bottom of the second workbench is provided with the X-axis slide block 1006, the first The X-axis servo motor 1007 and the X-axis screw 1008 are further disposed between the table and the second table, and the second table is in the X-axis servo motor and the X-axis. Reciprocal translation in the X-axis of the first table is achieved by the screw and the X-axis slide and the X-axis slide;

The X-axis driving mechanism includes a Y-axis slide rail 2001, a Y-axis slider 2002, a Y-axis servo motor 2003, and a Y-axis screw (not shown), and the third table is implemented along the The structure of the second table is reciprocally translated in the Y-axis direction: the second table is provided with the Y-axis slide rail 2001, and the bottom of the third table is provided with the Y-axis slider 2002. The Y-axis servo motor 2003 and the Y-axis screw are further disposed between the second table and the third table, and the third table is in the Y-axis servo motor and Y The reciprocal translation of the axial direction of the second table Y is achieved by the axial screw and the cooperation of the Y-axis slide and the Y-axis slide.

As shown in FIG. 13, the polishing apparatus 2 is provided with at least one set, each set of polishing apparatus includes a polishing motor 21, a polishing blade (not shown), and a polishing motor mount 22, the polishing motor being fixed to the polishing A motor mount is mounted to an end of the rotating shaft 211 of the polishing motor, and the polishing motor is electrically connected to the control system.

As shown in FIG. 1, the reclaiming device 3 includes a reclaiming mechanism and a translating drive mechanism 31 capable of driving the retracting mechanism X to reciprocally translate. The reclaiming mechanism includes a lifting cylinder 32, a rotary cylinder 33, and a take-up mechanism. And a lifting cylinder connected to the rotary cylinder, wherein the lifting assembly drives the picking assembly to translate up and down, and the rotating cylinder drives the picking assembly to rotate.

The translation drive mechanism 31 is driven by a cylinder rail or a servo motor. The translational drive mechanism is mounted to the table by a translational drive mechanism mount 35.

In this embodiment, the reclaiming assembly includes a fixing plate 341 and a suction cup 342 connected to the fixing plate. The push rod of the lifting cylinder is connected to the fixing plate, and the suction cup is externally connected to the vacuuming device.

As shown in Figure 1, a visual acquisition unit 4 is also included, the visual acquisition unit being electrically coupled to the control system. The visual acquisition unit is mounted at the polishing device, and the visual acquisition unit can be a camera.

In this embodiment, the rotating platform, the third working table, the second working table, the Y-axis driving mechanism, the polishing device and the positioning device are respectively provided with two groups, which can be simultaneously realized. Improve the efficiency of processing two light guide plates.

The working principle and working process of the utility model are as follows (taking the polishing process of the light guide plate of the mobile phone as an example):

The mobile phone light guide plate is placed on the rotating product platform and the carrier board, and the machine starts to work under the control of a preset control system, and the third slider slides along the third sliding rail by the push rod of the first translation cylinder Thereby driving the first positioning mechanism to be adjacent to the carrier plate; pushing the fourth slider along the fourth sliding rail by the push rod of the second translation cylinder to drive the second positioning mechanism to be adjacent to the carrier plate, and positioning the light guide plate, and The light guide plate is adsorbed to the carrier by the vacuum system, and then the first positioning mechanism and the second positioning mechanism disposed at the third processing surface are returned, and the positioning mechanism disposed at the third processing surface is translated with the third table. Then, driven by the X-axis driving mechanism, the third table is translated to the polishing station, and the polishing motor drives the polishing blade to polish a processed surface of the light guide plate, followed by the X-axis driving mechanism and the Y-axis driving mechanism. The light guide plate is rotated by 90° under the action of the driving and rotating driving mechanism, and the polishing of the second processing surface and the third processing surface of the light guide plate is sequentially performed. In this process, the polishing device is fixed and does not need to be translated or lifted. Then, the translation drive mechanism drives the retracting mechanism X to axially translate, and the lifting cylinder drives the retrieving assembly to move up and down, and the rotary cylinder drives the reclaiming component to rotate and receive the material, thereby realizing full automation and intelligent polishing of the mobile phone light guide plate. ;

Wherein, the debugging process of the positioning device is that after the light guide plate of the mobile phone is placed and the first translation cylinder and the second translation cylinder are driven into position, the first positioning mechanism is adjusted to be in a general position of the device through the first base, and then the position of the positioning rod is pulled. Then, the bolt is passed through the threaded hole of the first fixing block and screwed to fix the positioning rod to the first fixing block, and finally the first fixing block and the first sliding block are pushed along the first sliding rail by rotating the knob of the micrometer to drive The positioning rod is close to the workpiece, and the first fixing block and the first slider are moved backward by the tension spring to drive the positioning rod away from the workpiece; then the second positioning mechanism is adjusted to be located at a general position of the device, and the second fixing block is pushed by rotating the fine adjustment nut. And the second slider translates along the second sliding rail to drive the positioning block and the positioning bearing close to the workpiece. At this time, the outer ring of the positioning bearing abuts against the side surface of the workpiece and the limiting boss extends to the upper surface of the workpiece, and passes the positioning bearing The rotation converts the sliding friction between the first positioning mechanism and the workpiece into rolling friction, reducing the friction force, that is, the opposite sides of the workpiece pass A reference positioning mechanism and a buffer type compensation positioning mechanism achieve precise positioning.

The above description is only an embodiment of the present invention, and thus does not limit the scope of the patent of the present invention. Any equivalent structure made by using the specification and the drawings of the present invention may be directly or indirectly applied to other related technical fields. The same is included in the scope of patent protection of the present invention.

Claims

A light guide plate automatic polishing machine, comprising: a working table and a positioning device (1), a polishing device (2) and a reclaiming device (3) disposed on the working table, the reclaiming device is located at the Downstream of the polishing apparatus; the table is mounted with at least one rotating platform for fixing the light guide plate, and the rotating platform is connected with a rotating driving mechanism for driving the rotating platform to rotate horizontally, and the working table is further mounted to be driven An X-axis driving mechanism for reciprocally translating the rotating platform in the X-axis direction and a Y-axis driving mechanism capable of driving the rotating platform to reciprocally translate in the Y-axis direction;

The polishing machine is further provided with a control system, the positioning device, the polishing device, the reclaiming device, the rotating driving mechanism, the X-axis driving mechanism and the Y-axis driving mechanism are both The control system is electrically connected.
A light guide plate automatic polishing machine according to claim 1, wherein said rotating platform is a carrier plate (50) for placing a light guide plate, said rotary drive mechanism comprising a rotary drive motor (51) and planetary deceleration An output shaft of the rotary drive motor is coupled to an input shaft of the planetary reducer, an output shaft of the planetary reducer is coupled to the carrier, and the rotary drive motor and the planetary reducer are both The control system is electrically connected.
The automatic polishing machine for a light guide plate according to claim 2, wherein the positioning device (1) comprises a first positioning mechanism (10) and a second positioning mechanism (20), the light guide plate having three sides a rectangular sheet-shaped light guide plate to be processed, wherein the side surface to be processed of the light guide plate is a machined surface, and is a first processed surface, a second processed surface, and a third processed surface, respectively, and the side that does not need to be processed is a non-machined surface. The first processing surface and the third processing surface are opposite surfaces, one of which is provided with the first positioning mechanism, the other is provided with the second positioning mechanism, and the third processing surface is provided with the second positioning mechanism. The non-processing surface corresponds to the positioning piece (501); the first positioning mechanism and the positioning piece are reference positioning mechanisms, and the second positioning mechanism is a buffer type positioning mechanism;

Positioning of the first processing surface and the second processing surface of the light guide plate by the first positioning mechanism and the second positioning mechanism; the positioning piece is fixed to the carrier, and the second positioning mechanism is adopted And positioning the strip to realize positioning of the second processed surface and the non-machined surface of the light guide plate.
The automatic polishing machine for a light guide plate according to claim 3, wherein the positioning device further comprises a first driving mechanism (40) for driving the first positioning mechanism to be close to or away from the carrier, and the driving is located at the workpiece The second positioning mechanism at the third processing surface is adjacent to or away from the second driving mechanism (60) of the carrier; the first driving mechanism and the second driving mechanism are both electrically connected to the control system .
A light guide plate automatic polishing machine according to claim 4, wherein said first driving mechanism (40) comprises a first translation cylinder (401), a third slider (402) and a third slide rail (403). Passing the third slider to slide along the third rail through the push rod of the first translation cylinder to drive the first positioning mechanism toward or away from the carrier; the second driving mechanism (60) a second translation cylinder (601), a fourth slider (602) and a fourth slide rail (603), and the push rod of the second translation cylinder pushes the fourth slider to slide along the fourth slide rail to drive The second positioning mechanism is adjacent to or away from the carrier; both the first translation cylinder and the second translation cylinder are electrically coupled to the control system.
The automatic polishing machine for a light guide plate according to claim 3, wherein the first positioning mechanism comprises a positioning rod (101), a first fixing block (102), a first slider (103), and a first sliding a rail (104), a tension spring (105), a first base (106) and a micrometer (107), the first slide rail is fixed to the first base, and the positioning rod is mounted on the first fixed block, The first fixing block is fixed to the first sliding block, the micrometer is mounted on the first base, and the micrometer screw of the micrometer is pressed against the first fixing block, and one end of the tension spring is mounted on The first base and the other end are mounted on the first fixing block, and the first slider is capable of translating along the first sliding rail;

When positioning, the end of the positioning rod abuts against the side of the light guide plate to be positioned, and the first fixed block and the first sliding block are pushed along the first sliding rail to rotate the positioning rod by rotating the knob of the micrometer Adjacent to the light guide plate, the first fixed block and the first slider are moved backward by the tension spring to drive the positioning rod away from the light guide plate.
The automatic polishing machine for a light guide plate according to claim 3, wherein the second positioning mechanism comprises a positioning bearing (201), a positioning block (202), a second fixing block (203), and a second slider ( 204), a second sliding rail (205), an elastic member (206) and a second fixing seat (207), the positioning bearing is mounted on an end of the positioning block, and the positioning block is mounted on the second fixing Block, the second fixing block mounting the second slider, the second sliding rail is mounted on the second fixing seat, and the second sliding block is capable of translating along the second sliding rail, the first The elastic member is mounted between the two fixing blocks and the second fixing seat, and the deformation of the elastic member drives the second sliding block to translate along the second sliding rail to drive the positioning block and the positioning bearing to be close to or away from the light guiding plate. ;

The first positioning mechanism further includes a trimming nut (208), and the trimming nut passes through the second fixing seat, and adjusts a distance between the second fixing block and the second fixing seat by adjusting a fine adjustment nut to adjust Position the distance between the bearing and the light guide.
The automatic polishing machine for a light guide plate according to claim 1, wherein the table is a first working table (100), a second working table (200) and a third working table (300) from bottom to top. The rotating platform is mounted on the third table through a fixing table (52), and the first table and the second table are mounted to be capable of driving the second table X to reciprocate axially a translational X-axis driving mechanism, and a Y-axis driving mechanism capable of driving the third table Y to reciprocally translate axially between the second table and the third table, the X-axis Both the drive mechanism and the Y-axis drive mechanism are electrically coupled to the control system.
The automatic polishing machine for a light guide plate according to claim 1, wherein said polishing device (2) is provided with at least one set, each set of polishing devices comprising a polishing motor (21), a polishing blade and a polishing motor holder. (22) The polishing motor is fixed to the polishing motor mount, the polishing blade is mounted at an end of a rotating shaft (211) of the polishing motor, and the polishing motor is electrically connected to the control system.
The automatic polishing machine for a light guide plate according to claim 1, wherein the reclaiming device (3) comprises a reclaiming mechanism and a translational driving mechanism (31) capable of driving the retracting mechanism X to reciprocally translate The reclaiming mechanism includes a lifting cylinder (32), a rotary cylinder (33) and a reclaiming assembly, and the lifting cylinder is connected to the rotary cylinder, and the lifting assembly drives the retrieving assembly to move up and down through the lifting cylinder. The rotary cylinder drives the take-up assembly to rotate.