CN109227693B - Light guide plate cuts auxiliary mechanism - Google Patents
Light guide plate cuts auxiliary mechanism Download PDFInfo
- Publication number
- CN109227693B CN109227693B CN201811014116.5A CN201811014116A CN109227693B CN 109227693 B CN109227693 B CN 109227693B CN 201811014116 A CN201811014116 A CN 201811014116A CN 109227693 B CN109227693 B CN 109227693B
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- Prior art keywords
- guide plate
- light guide
- fixing frame
- splitting
- original
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- 230000005294 ferromagnetic effect Effects 0.000 claims abstract description 36
- 238000005520 cutting process Methods 0.000 claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 9
- 229910000831 Steel Inorganic materials 0.000 claims description 8
- 239000004033 plastic Substances 0.000 claims description 8
- 229920003023 plastic Polymers 0.000 claims description 8
- 239000010959 steel Substances 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000011324 bead Substances 0.000 claims description 3
- 238000005336 cracking Methods 0.000 claims description 3
- 229910003460 diamond Inorganic materials 0.000 claims description 3
- 239000010432 diamond Substances 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 239000010408 film Substances 0.000 description 19
- 239000003292 glue Substances 0.000 description 8
- 238000002834 transmittance Methods 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 238000001746 injection moulding Methods 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 239000000969 carrier Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 238000007792 addition Methods 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
- B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F3/00—Severing by means other than cutting; Apparatus therefor
- B26F3/04—Severing by squeezing
Abstract
The invention discloses a light guide plate cutting auxiliary mechanism, which comprises a carrier and a splitting arm, wherein the carrier is provided with a first guide plate and a second guide plate; a splitting arm is arranged above the carrying platform; the center of the carrying platform is provided with a linear notch, two sides of the linear notch are respectively provided with two carrying platforms, and the opposite lower surfaces of the two carrying platforms are provided with knife-shaped notches; a light source is arranged below the carrying platform and respectively emits natural light or infrared light; a CCD industrial camera is arranged above the carrying platform; the splitting arm comprises a telescopic rod, a hammer fixing frame, a hammer, a ferromagnetic coil, a blade fixing frame and a splitting knife, wherein the hammer fixing frame is arranged on the side wall of the telescopic rod, the blade fixing frame is arranged on the telescopic rod below the hammer fixing frame, and the splitting knife is arranged on the blade fixing frame. The invention has the characteristics of uniform light emission, improved production speed, reduced production cost and high cutting precision.
Description
Technical Field
The invention relates to a light guide plate cutting auxiliary mechanism, in particular to a light guide plate cutting auxiliary mechanism which has uniform light emission, high production speed, low production cost and high cutting precision.
Background
In recent years, in the display industry, backlight modules (BLU: backLightUn it) are classified into a direct type and a side-in type. The proportion of the side-entrance backlight module is larger and larger. The side-entry products are more ultrathin in appearance and have a larger and larger duty cycle. The lower surface of the side-in light guide plate is usually provided with formed mesh points to realize the reflection of light, so that the light can be uniformly irradiated onto the optical film.
The working principle of the light guide plate is that the optical acrylic plate is utilized to absorb the light emitted from the LED lamp to stay on the surface of the acrylic plate, when the light rays are emitted to all the net points, the reflected light can be diffused to all the angles, then the reflection conditions are destroyed to be emitted from the front surface of the light guide plate, and the light guide plate can uniformly emit light through various light guide points with different densities and sizes.
The light guide plate takes optical acrylic (PMMA)/PC as a base material, and light enters the light guide plate from the incident surface of the light guide plate and is scattered at the mesh points of the light guide plate, so that the light is uniformly distributed. The incidence surface of the light guide plate, namely the microstructure design of the end surface of the light guide plate, can improve the optical performance of the light guide plate.
In electronic products such as liquid crystal display, a light guide plate is generally provided, and the light guide plate functions to convert a linear light source into a surface light source. The light guide plate can be made of PC and other materials, so that the water gap is generally required to be cut after the injection molding product of the light guide plate comes out of the injection molding machine. The prior art light guide plate water gap cutting method is mainly to manually separate the light guide plate injection molding product from the water gap or separate the light guide plate injection molding product from the water gap through semi-automatic equipment, and the method has the defects that: the light guide plate is easy to crack, dust is dyed, the section of the water gap is uneven, time is wasted, and the production efficiency is low.
Disclosure of Invention
The invention aims to provide the light guide plate cutting auxiliary mechanism which has uniform light emission, high production speed, low production cost and high cutting precision.
The aim of the invention can be achieved by the following technical scheme:
a light guide plate cutting auxiliary mechanism comprises a carrier and a splitting arm;
a splitting arm is arranged above the carrying platform;
the center of the carrying platform is provided with a linear notch, two sides of the linear notch are respectively provided with two carrying platforms, and the opposite lower surfaces of the two carrying platforms are provided with knife-shaped notches;
a light source is arranged below the carrying platform and respectively emits natural light or infrared light; a CCD industrial camera is arranged above the carrying platform;
the splitting arm comprises a telescopic rod, a hammer fixing frame, a hammer, a ferromagnetic coil, a blade fixing frame and a splitting cutter, wherein the hammer fixing frame is arranged on the side wall of the telescopic rod, the blade fixing frame is arranged on the telescopic rod below the hammer fixing frame, and the splitting cutter is arranged on the blade fixing frame;
the driving hammer fixing frame is provided with a through hole along the direction of the telescopic rod, the driving hammer is arranged in the through hole, the driving hammer penetrates through the driving hammer fixing frame along the through hole, a ferromagnetic coil is wound on the outer side of the driving hammer above the driving hammer fixing frame, and a plastic steel spring is arranged on the outer side of the ferromagnetic coil;
the lower surface of the upper knife-shaped notch of the carrier is provided with a light source which is fixed on the lower surface of the carrier;
the light source consists of a circuit board and LED lamp beads arranged on the circuit board, the two light sources are respectively positioned on the two carrier racks, and the two light sources respectively emit natural light and infrared light;
the lower surface of the blade fixing frame is provided with a mounting groove which penetrates through one side surface of the blade fixing frame; the mounting groove is matched with the splitting knife;
the operation method of the mechanism comprises the following steps:
step one, cutting one surface of a light guide plate original plate into a presplitting line through a blade, diamond and laser according to the required size of the light guide plate; washing with ethanol or deionized water, pre-cracking the chips, and air-drying;
step two, attaching flexible electrostatic films on the original plate of the light guide plate on one side and the opposite side of the pre-crack;
step three, placing a light guide plate original plate on the upper surface of a carrier, wherein the pre-cracks are positioned on the lower surface of the light guide plate original plate; adjusting the distance between the two carrier frames, and coarsely adjusting the positions of the pre-crack, the linear notch and the lower end of the splitting knife to enable the pre-crack, the linear notch and the splitting knife to be coplanar;
turning on a light source, and downwards adjusting a splitting arm to enable the lower end of a splitting cutter to be close to the upper surface of the original plate of the light guide plate; light emitted by the light source penetrates through the original plate of the light guide plate, is captured by a CCD industrial camera above the mechanism, and forms an image; fine-adjusting the positions of the pre-crack, the linear notch and the lower end of the splitting cutter according to the image to make the pre-crack, the linear notch and the splitting cutter coplanar;
step five, the splitting arm is downwards adjusted, the lower end of the splitting knife is contacted with the upper surface of the original plate of the light guide plate, the ferromagnetic coil is electrified for a plurality of times, the driving hammer knocks the blade fixing frame, the splitting knife drives the original plate of the light guide plate to vibrate, and the original plate of the light guide plate is split along the pre-splitting pattern;
step six, the splitting arm is adjusted upwards, the original light guide plate is taken out, the flexible electrostatic film is torn off, the notch of the original light guide plate is washed by deionized water or alcohol, and after drying, the notch surface of the original light guide plate is polished and polished by the end face polishing machine, so that auxiliary cutting of the original light guide plate is completed.
The auxiliary mechanism for cutting the light guide plate has the characteristics of improving the production speed, reducing the production cost and having high cutting precision.
The invention has the beneficial effects that:
the thickness of the carrier near the linear notch is reduced by the knife-shaped notch, so that the excessive thickness of the carriers at two sides of the linear notch is avoided, and rigid vibration is generated when the splitting arm splits the original plate of the light guide plate with the pre-crack, so that the splitting knife edge on the splitting arm breaks or the original plate of the light guide plate near the pre-crack breaks;
according to different materials of the original light guide plate, different light sources are selected, and natural light is suitable for the original light guide plate with high transmittance; the infrared light is suitable for the original plate of the light guide plate with lower light transmittance; light emitted by the light source penetrates through the original plate of the light guide plate through the lower surface of the original plate of the light guide plate, a photo is captured through a CCD industrial camera arranged above the mechanism, an original plate image of the light guide plate with obvious pre-cracks is formed, and the positions of the splitting knife and the pre-cracks are adjusted according to the image, so that the splitting knife is positioned right above the pre-cracks;
when the ferromagnetic coil is electrified, the ferromagnetic coil is electrified to generate magnetism, the hammer is attracted to the blade fixing frame, and the lower end of the hammer knocks the upper surface of the blade fixing frame; when the ferromagnetic coil is powered off, the attraction force of the ferromagnetic coil to the hammer disappears, the hammer returns to the original position under the action of the plastic steel spring, and the lower end of the hammer is separated from the upper surface of the blade fixing frame; the ferromagnetic coil is electrified to be powered off, and the hammer is used for completing one-time knocking of the blade fixing frame;
the distance between the two carrier frames is adjusted, the width of the linear notch on the carrier frame is changed to accommodate the original plates of the light guide plates with different thicknesses, and the splitting and edge breakage conditions caused by the original plates of the light guide plates with the single linear notch width are reduced;
the splitting knife is inserted into the mounting groove of the blade fixing frame through the side surface of the mounting groove, and is fixed through a screw arranged on the blade fixing frame;
attaching a flexible electrostatic film to the original light guide plate at one side and the opposite side of the pre-crack, wherein the flexible electrostatic film is used for adhering the front side and the back side of the original light guide plate near the pre-crack, and when the original light guide plate is placed to break on the pre-crack, larger deformation is generated, so that scraps scratch the original light guide plate or the contact surface of the original light guide plate and a carrying table is scratched; the flexible electrostatic film is softer, which is beneficial to splitting the original plate of the light guide plate; the flexible electrostatic film adopts an electrostatic adhesion method, so that glue is not easy to remain on the surface of the original light guide plate, the original light guide plate must be additionally cleaned by removing the glue, the production speed is improved, and the production cost is reduced.
Drawings
The present invention is further described below with reference to the accompanying drawings for the convenience of understanding by those skilled in the art.
Fig. 1 is a schematic structural diagram of a light guide plate cutting auxiliary mechanism according to the present invention.
Detailed Description
The aim of the invention can be achieved by the following technical scheme:
referring to fig. 1, the light guide plate cutting auxiliary mechanism comprises a carrier 1 and a splitting arm 2;
a splitting arm 2 is arranged above the carrying platform 1;
the center of the carrying platform 1 is provided with a linear notch, two sides of the linear notch are respectively provided with two carrying platforms 11, the opposite lower surfaces of the two carrying platforms 11 are provided with knife-shaped notches, the knife-shaped notches reduce the thickness of the carrying platforms 11 near the linear notch, the carrying platform 1 on two sides of the linear notch is prevented from being excessively thick, rigid vibration is generated when the splitting arm 2 splits the original light guide plate 3 with the pre-crack 31, and the knife edge of the splitting knife 26 on the splitting arm 2 breaks or the original light guide plate 3 near the pre-crack 31 breaks;
a light source 12 is arranged below the carrying platform 1, and the light source 12 respectively emits natural light or infrared light; a CCD industrial camera is arranged above the carrying platform 1; according to different materials of the original light guide plate 3, different light sources 12 are selected, and natural light is suitable for the original light guide plate 3 with high transmittance; the infrared light is suitable for the original plate 3 of the light guide plate with lower light transmittance; light emitted by the light source 12 penetrates through the light guide plate original plate 3 through the lower surface of the light guide plate original plate 3, then a photo is captured through a CCD industrial camera arranged above the mechanism, an image of the light guide plate original plate 3 with obvious pre-crack 31 is formed, and the positions of the splitting knife 26 and the pre-crack 31 are adjusted according to the image, so that the splitting knife 26 is positioned right above the pre-crack 31;
the splitting arm 2 comprises a telescopic rod 21, a hammer fixing frame 22, a hammer 23, a ferromagnetic coil 24, a blade fixing frame 25 and a splitting cutter 26, wherein the hammer fixing frame 22 is arranged on the side wall of the telescopic rod 21, the blade fixing frame 25 is arranged on the telescopic rod 21 below the hammer fixing frame 22, and the splitting cutter 26 is arranged on the blade fixing frame 25;
the driving hammer fixing frame 22 is provided with a through hole along the direction of the telescopic rod 21, the driving hammer 23 is arranged in the through hole, the driving hammer 23 penetrates through the driving hammer fixing frame 22 along the through hole, a ferromagnetic coil 24 is wound on the outer side of the driving hammer 23 above the driving hammer fixing frame 22, and a plastic steel spring is arranged on the outer side of the ferromagnetic coil 24; when the ferromagnetic coil 24 is electrified, the ferromagnetic coil 24 is electrified to generate magnetism, the hammer 23 is attracted to the blade fixing frame 25, and the lower end of the hammer 23 knocks on the upper surface of the blade fixing frame 25; when the ferromagnetic coil 24 is powered off, the attraction force of the ferromagnetic coil 24 to the hammer 23 disappears, the hammer 23 returns to the original position under the action of the plastic steel spring, and the lower end of the hammer 23 is separated from the upper surface of the blade fixing frame 25; the ferromagnetic coil 24 is powered on to off, and the hammer 23 completes one-time knocking of the blade holder 25;
the lower surface of the upper knife-shaped notch of the carrier 11 is provided with a light source 12, and the light source 12 is fixed on the lower surface of the carrier 11; the distance between the two carrier frames 11 is adjusted, the linear notch width on the carrier 1 is changed to accommodate the original light guide plate 3 with different thicknesses, and the splitting and edge breakage conditions caused by the original light guide plate 3 with the single linear notch width are reduced;
the light sources 12 are composed of a circuit board and LED lamp beads arranged on the circuit board, the two light sources 12 are respectively positioned on the two carrier brackets 11, and the two light sources 12 respectively emit natural light and infrared light;
the lower surface of the blade fixing frame 25 is provided with a mounting groove which penetrates through one side surface of the blade fixing frame 25; the mounting groove is matched with the splitting knife 26, the splitting knife 26 is inserted into the mounting groove of the blade fixing frame 25 through the side surface of the mounting groove, and the splitting knife 26 is fixed through a screw arranged on the blade fixing frame 25;
the operation method of the mechanism comprises the following steps:
step one, cutting a presplitting line 31 on one surface of a light guide plate original plate 3 through a blade, diamond and laser according to the required size of the light guide plate; washing with ethanol or deionized water, pre-cracking the scraps near the lines 31, and airing;
attaching a flexible electrostatic film 4 to the original light guide plate 3 on one side and the opposite side of the pre-crack 31, wherein the flexible electrostatic film 4 is used for adhering the front and the back of the original light guide plate 3 near the pre-crack 31, and when the original light guide plate 3 is placed to be broken on the pre-crack 31, large deformation is generated, so that scraps scratch the original light guide plate 3 or the contact surface of the original light guide plate 3 and the carrying platform 1; the flexible electrostatic film 4 is softer, which is beneficial to splitting the original plate 3 of the light guide plate; the flexible electrostatic film 4 adopts an electrostatic adhesion method, so that glue is not easy to remain on the surface of the original light guide plate 3, the original light guide plate 3 is required to be additionally cleaned by removing the glue, the production speed is improved, and the production cost is reduced;
step three, placing the original light guide plate 3 on the upper surface of the carrier 1, wherein the pre-cracks 31 are positioned on the lower surface of the original light guide plate 3; the distance between the two carriers 11 is adjusted, and the positions of the pre-cracks 31, the linear notch and the lower end of the splitting blade 26 are roughly adjusted, so that the pre-cracks 31, the linear notch and the splitting blade 26 are coplanar;
turning on the light source 12, and downwards adjusting the splitting arm 2 to enable the lower end of the splitting knife 26 to be close to the upper surface of the original light guide plate 3; light emitted by the light source 12 penetrates through the original plate 3 of the light guide plate, is captured by a CCD industrial camera above the mechanism, and is photographed into an image; fine-tuning the positions of the pre-cracks 31, the linear notch and the lower end of the splitting blade 26 according to the images, so that the pre-cracks 31, the linear notch and the splitting blade 26 are coplanar;
step five, the splitting arm 2 is adjusted downwards, the lower end of the splitting knife 26 is contacted with the upper surface of the original light guide plate 3, the ferromagnetic coil 24 is electrified for a plurality of times, the hammer 23 is enabled to strike the blade fixing frame 25, the splitting knife 26 drives the original light guide plate 3 to vibrate, and the original light guide plate 3 is enabled to split along the pre-splitting lines 31;
step six, the splitting arm 2 is adjusted upwards, the original light guide plate 3 is taken out, the flexible electrostatic film 4 is torn off, the notch of the original light guide plate 3 is washed by deionized water or alcohol, and after drying, the notch surface of the original light guide plate 3 is polished and polished by the end face polishing machine, so that auxiliary cutting of the original light guide plate 3 is completed.
The working principle of the invention is as follows:
the invention is provided with a splitting arm 2 above a carrying platform 1;
the center of the carrying platform 1 is provided with a linear notch, two sides of the linear notch are respectively provided with two carrying platforms 11, the opposite lower surfaces of the two carrying platforms 11 are provided with knife-shaped notches, the knife-shaped notches reduce the thickness of the carrying platforms 11 near the linear notch, the carrying platform 1 on two sides of the linear notch is prevented from being excessively thick, rigid vibration is generated when the splitting arm 2 splits the original light guide plate 3 with the pre-crack 31, and the knife edge of the splitting knife 26 on the splitting arm 2 breaks or the original light guide plate 3 near the pre-crack 31 breaks;
a light source 12 is arranged below the carrying platform 1, and the light source 12 respectively emits natural light or infrared light; a CCD industrial camera is arranged above the carrying platform 1; according to different materials of the original light guide plate 3, different light sources 12 are selected, and natural light is suitable for the original light guide plate 3 with high transmittance; the infrared light is suitable for the original plate 3 of the light guide plate with lower light transmittance; light emitted by the light source 12 penetrates through the light guide plate original plate 3 through the lower surface of the light guide plate original plate 3, then a photo is captured through a CCD industrial camera arranged above the mechanism, an image of the light guide plate original plate 3 with obvious pre-crack 31 is formed, and the positions of the splitting knife 26 and the pre-crack 31 are adjusted according to the image, so that the splitting knife 26 is positioned right above the pre-crack 31;
the splitting arm 2 comprises a telescopic rod 21, a hammer fixing frame 22, a hammer 23, a ferromagnetic coil 24, a blade fixing frame 25 and a splitting cutter 26, wherein the hammer fixing frame 22 is arranged on the side wall of the telescopic rod 21, the blade fixing frame 25 is arranged on the telescopic rod 21 below the hammer fixing frame 22, and the splitting cutter 26 is arranged on the blade fixing frame 25;
a ferromagnetic coil 24 is wound on the outer side of the hammer 23 above the hammer fixing frame 22, and a plastic steel spring is arranged on the outer side of the ferromagnetic coil 24; when the ferromagnetic coil 24 is electrified, the ferromagnetic coil 24 is electrified to generate magnetism, the hammer 23 is attracted to the blade fixing frame 25, and the lower end of the hammer 23 knocks on the upper surface of the blade fixing frame 25; when the ferromagnetic coil 24 is powered off, the attraction force of the ferromagnetic coil 24 to the hammer 23 disappears, the hammer 23 returns to the original position under the action of the plastic steel spring, and the lower end of the hammer 23 is separated from the upper surface of the blade fixing frame 25; the ferromagnetic coil 24 is powered on to off, and the hammer 23 completes one-time knocking of the blade holder 25;
the distance between the two carrier frames 11 is adjusted, the linear notch width on the carrier 1 is changed to accommodate the original light guide plate 3 with different thicknesses, and the splitting and edge breakage conditions caused by the original light guide plate 3 with the single linear notch width are reduced;
the splitting knife 26 is inserted into the mounting groove of the blade fixing frame 25 through the side surface of the mounting groove, and the splitting knife 26 is fixed through a screw arranged on the blade fixing frame 25;
attaching a flexible electrostatic film 4 to the original light guide plate 3 at one side and the opposite side of the pre-crack 31, wherein the flexible electrostatic film 4 is used for adhering the front side and the back side of the original light guide plate 3 near the pre-crack 31, and when the original light guide plate 3 is placed to be broken on the pre-crack 31, larger deformation is generated, so that scraps scratch the original light guide plate 3 or the contact surface of the original light guide plate 3 and the carrying table 1; the flexible electrostatic film 4 is softer, which is beneficial to splitting the original plate 3 of the light guide plate; the flexible electrostatic film 4 adopts an electrostatic adhesion method, so that glue is not easy to remain on the surface of the original light guide plate 3, the original light guide plate 3 is required to be additionally cleaned by removing the glue, the production speed is improved, and the production cost is reduced.
The auxiliary mechanism for cutting the light guide plate has the characteristics of improving the production speed, reducing the production cost and having high cutting precision.
The invention has the beneficial effects that:
the thickness of the carrier near the linear notch is reduced by the knife-shaped notch, so that the excessive thickness of the carriers at two sides of the linear notch is avoided, and rigid vibration is generated when the splitting arm splits the original plate of the light guide plate with the pre-crack, so that the splitting knife edge on the splitting arm breaks or the original plate of the light guide plate near the pre-crack breaks;
according to different materials of the original light guide plate, different light sources are selected, and natural light is suitable for the original light guide plate with high transmittance; the infrared light is suitable for the original plate of the light guide plate with lower light transmittance; light emitted by the light source penetrates through the original plate of the light guide plate through the lower surface of the original plate of the light guide plate, a photo is captured through a CCD industrial camera arranged above the mechanism, an original plate image of the light guide plate with obvious pre-cracks is formed, and the positions of the splitting knife and the pre-cracks are adjusted according to the image, so that the splitting knife is positioned right above the pre-cracks;
when the ferromagnetic coil is electrified, the ferromagnetic coil is electrified to generate magnetism, the hammer is attracted to the blade fixing frame, and the lower end of the hammer knocks the upper surface of the blade fixing frame; when the ferromagnetic coil is powered off, the attraction force of the ferromagnetic coil to the hammer disappears, the hammer returns to the original position under the action of the plastic steel spring, and the lower end of the hammer is separated from the upper surface of the blade fixing frame; the ferromagnetic coil is electrified to be powered off, and the hammer is used for completing one-time knocking of the blade fixing frame;
the distance between the two carrier frames is adjusted, the width of the linear notch on the carrier frame is changed to accommodate the original plates of the light guide plates with different thicknesses, and the splitting and edge breakage conditions caused by the original plates of the light guide plates with the single linear notch width are reduced;
the splitting knife is inserted into the mounting groove of the blade fixing frame through the side surface of the mounting groove, and is fixed through a screw arranged on the blade fixing frame;
attaching a flexible electrostatic film to the original light guide plate at one side and the opposite side of the pre-crack, wherein the flexible electrostatic film is used for adhering the front side and the back side of the original light guide plate near the pre-crack, and when the original light guide plate is placed to break on the pre-crack, larger deformation is generated, so that scraps scratch the original light guide plate or the contact surface of the original light guide plate and a carrying table is scratched; the flexible electrostatic film is softer, which is beneficial to splitting the original plate of the light guide plate; the flexible electrostatic film adopts an electrostatic adhesion method, so that glue is not easy to remain on the surface of the original light guide plate, the original light guide plate must be additionally cleaned by removing the glue, the production speed is improved, and the production cost is reduced.
The foregoing is merely illustrative of the structures of this invention and various modifications, additions and substitutions for those skilled in the art can be made to the described embodiments without departing from the scope of the invention or from the scope of the invention as defined in the accompanying claims.
Claims (1)
1. The operation method of the light guide plate cutting auxiliary mechanism comprises a carrier (1) and a splitting arm (2) and is characterized in that the light guide plate cutting auxiliary mechanism comprises a carrier body and a plurality of light guide plates; a splitting arm (2) is arranged above the carrying platform (1);
a linear notch is formed in the center of the carrying platform (1), two carrying platforms (11) are respectively arranged on two sides of the linear notch, and knife-shaped notches are formed in the lower surfaces of the two carrying platforms (11) in opposite directions; a light source (12) is arranged below the carrying platform (1), and the light source (12) respectively emits natural light or infrared light; a CCD industrial camera is arranged above the carrying platform (1); the splitting arm (2) comprises a telescopic rod (21), a hammer fixing frame (22), a hammer (23), a ferromagnetic coil (24), a blade fixing frame (25) and a splitting knife (26), wherein the hammer fixing frame (22) is arranged on the side wall of the telescopic rod (21), the blade fixing frame (25) is arranged on the telescopic rod (21) below the hammer fixing frame (22), and the splitting knife (26) is arranged on the blade fixing frame (25); the driving hammer fixing frame (22) is provided with a through hole along the direction of the telescopic rod (21), the driving hammer (23) is installed in the through hole, the driving hammer (23) penetrates through the driving hammer fixing frame (22) along the through hole, a ferromagnetic coil (24) is wound on the outer side of the driving hammer (23) above the driving hammer fixing frame (22), and a plastic steel spring is arranged on the outer side of the ferromagnetic coil (24);
the lower surface of the upper knife-shaped notch of the carrier (11) is provided with a light source (12), and the light source (12) is fixed on the lower surface of the carrier (11); the light sources (12) are composed of a circuit board and LED lamp beads arranged on the circuit board, the two light sources (12) are respectively positioned on the two carrier brackets (11), and the two light sources (12) respectively emit natural light and infrared light; the lower surface of the blade fixing frame (25) is provided with a mounting groove which penetrates through one side surface of the blade fixing frame (25); the mounting groove is matched with the splitting knife (26);
the operation method of the light guide plate cutting auxiliary mechanism comprises the following steps:
step one, cutting a presplitting line (31) on one surface of a light guide plate original plate (3) through a blade, diamond and laser according to the required size of the light guide plate; washing with ethanol or deionized water, pre-cracking the scraps near the lines (31), and airing;
step two, attaching a flexible electrostatic film (4) on the original plate (3) of the light guide plate on one side and the opposite side of the pre-crack (31);
thirdly, placing the original light guide plate (3) on the upper surface of the carrier (1), wherein the pre-crack (31) is positioned on the lower surface of the original light guide plate (3); the distance between the two carrier frames (11) is adjusted, and the positions of the pre-cracks (31), the linear notch and the lower end of the splitting knife (26) are roughly adjusted, so that the pre-cracks (31), the linear notch and the splitting knife (26) are coplanar;
turning on a light source (12), and downwards adjusting a splitting arm (2) to enable the lower end of a splitting knife (26) to be close to the upper surface of a light guide plate original plate (3); light emitted by the light source (12) penetrates through the original plate (3) of the light guide plate, is captured by a CCD industrial camera above the mechanism, and is photographed into an image; finely adjusting the positions of the lower ends of the pre-cracks (31), the linear notch and the splitting knife (26) according to the images, so that the pre-cracks (31), the linear notch and the splitting knife (26) are coplanar;
step five, the splitting arm (2) is downwards adjusted, the lower end of the splitting knife (26) is in contact with the upper surface of the original light guide plate (3), the ferromagnetic coil (24) is electrified for a plurality of times, the hammer (23) is enabled to strike the blade fixing frame (25), the splitting knife (26) drives the original light guide plate (3) to vibrate, and the original light guide plate (3) is enabled to split along the pre-splitting lines (31);
step six, the splitting arm (2) is adjusted upwards, the original light guide plate (3) is taken out, the flexible electrostatic film (4) is torn off, the notch of the original light guide plate (3) is washed by deionized water or alcohol, and after drying, the notch surface of the original light guide plate (3) is polished and polished by the end face polishing machine, so that auxiliary cutting of the original light guide plate (3) is completed.
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| CN201811014116.5A CN109227693B (en) | 2018-08-31 | 2018-08-31 | Light guide plate cuts auxiliary mechanism |
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| CN109227693B true CN109227693B (en) | 2024-03-22 |
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| CN113777691B (en) * | 2021-08-17 | 2023-12-05 | 苏州茂立光电科技有限公司 | Light guide plate manufacturing and assembling mechanism with predetermined tearing edge material and manufacturing and assembling method thereof |
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| CN101577296A (en) * | 2008-05-07 | 2009-11-11 | 硅源公司 | Layer transfer of films utilizing controlled shear region |
| CN101664969A (en) * | 2004-06-03 | 2010-03-10 | 欧文斯科技公司 | Method for cleaving brittle materials |
| CN105161460A (en) * | 2015-09-08 | 2015-12-16 | 圆融光电科技股份有限公司 | Spherical splitting device |
| CN206589170U (en) * | 2017-01-26 | 2017-10-27 | 鞍山盛雄激光设备有限公司 | A kind of full-automatic wafer splitting machine |
| CN208977914U (en) * | 2018-08-31 | 2019-06-14 | 合肥泰沃达智能装备有限公司 | A kind of light guide plate cuts auxiliary body |
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| GB0519448D0 (en) * | 2005-09-23 | 2005-11-02 | Murgatroyd Ian | Optical fiber stripping apparatus and optical fiber stripping method therefor |
| US8993410B2 (en) * | 2006-09-08 | 2015-03-31 | Silicon Genesis Corporation | Substrate cleaving under controlled stress conditions |
| GB2501974B (en) * | 2012-04-02 | 2016-09-07 | Oxford Fiber Ltd | Profiling of cleaved angled end faces of optical fiber(s) |
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| CN101664969A (en) * | 2004-06-03 | 2010-03-10 | 欧文斯科技公司 | Method for cleaving brittle materials |
| CN101577296A (en) * | 2008-05-07 | 2009-11-11 | 硅源公司 | Layer transfer of films utilizing controlled shear region |
| CN105161460A (en) * | 2015-09-08 | 2015-12-16 | 圆融光电科技股份有限公司 | Spherical splitting device |
| CN206589170U (en) * | 2017-01-26 | 2017-10-27 | 鞍山盛雄激光设备有限公司 | A kind of full-automatic wafer splitting machine |
| CN208977914U (en) * | 2018-08-31 | 2019-06-14 | 合肥泰沃达智能装备有限公司 | A kind of light guide plate cuts auxiliary body |
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