CN109927264B - Hot rolling production line and hot rolling process for light guide plate - Google Patents
Hot rolling production line and hot rolling process for light guide plate Download PDFInfo
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- CN109927264B CN109927264B CN201910306834.8A CN201910306834A CN109927264B CN 109927264 B CN109927264 B CN 109927264B CN 201910306834 A CN201910306834 A CN 201910306834A CN 109927264 B CN109927264 B CN 109927264B
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- 238000005098 hot rolling Methods 0.000 title claims abstract description 27
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 52
- 238000005096 rolling process Methods 0.000 claims abstract description 29
- 238000005520 cutting process Methods 0.000 claims abstract description 11
- 210000001503 joint Anatomy 0.000 claims abstract description 4
- 230000007246 mechanism Effects 0.000 claims description 22
- 238000013519 translation Methods 0.000 claims description 7
- 239000002994 raw material Substances 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 abstract 1
- 230000003287 optical effect Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003698 laser cutting Methods 0.000 description 1
- 230000031700 light absorption Effects 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
- 238000000465 moulding Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
The invention provides a hot rolling production line and a hot rolling process of a light guide plate, wherein the hot rolling production line of the light guide plate comprises an extruder, a conveying device, a rolling device and a cutting device which are arranged in a butt joint mode in sequence; the rolling device comprises two groups of processing rollers; each group of processing rollers comprises two roller frames, a first roller and a second roller which are respectively rotatably arranged on the two roller frames and are arranged up and down; a first net point structure is arranged on a first roller of one group of processing rollers, and a second net point structure is arranged on a second roller of the other group of processing rollers; the hot rolling process of the light guide plate comprises the following steps: (1) Extrusion molding, and ensuring that the temperature of the plate is reduced to 30-60 ℃ when the plate enters a rolling device; (2) Rolling the plate sequentially through two groups of processing rollers to respectively roll two plate surfaces of the plate; (3) cutting. The hot rolling production line and the hot rolling process of the light guide plate can solve the problem of uneven processing of the lattice point structure, and improve the processing efficiency and the quality of finished products of the light guide plate.
Description
Technical Field
The invention relates to the field of light guide plates, in particular to a hot rolling production line and a hot rolling process of a light guide plate.
Background
The liquid crystal backlight is a planar uniform lighting device, and cold cathode fluorescent lamps or LED light bars serving as light sources are arranged on two sides or one side of the whole backlight. The cold cathode lamp tube is a linear light source, the LEDs are point light sources, and a light guide plate is needed to be used for converting the light source into a surface light source. The light guide plate is used for guiding the scattering direction of light, improving the brightness of the panel and ensuring the uniformity of the brightness of the panel.
Most of domestic manufacturers adopt a printed light guide plate as a light guide component, the printed light guide plate is made of a material (such as propylene) with high reflectivity and no light absorption on an acrylic flat plate, and concave lattice points are printed on the bottom surface of the light guide plate by screen printing, so that the light guide plate has the advantages of low development cost and quick production. The point light source is located at the side of the light guide plate, the emitted light is guided into the light guide plate by reflection, when the light rays reach the net points, the reflected light can be diffused towards all angles, and the reflected light is emitted from the front surface of the light guide plate. The lattice point can be square, rhombic, round, semicircular and elliptic microstructure to adjust the uniformity of the selected light source in the front direction; the size of the screen is from centimeter level to micrometer level, the smaller the screen is, the finer the surface uniformity of the light source can be adjusted, and meanwhile, the screen quality of the display can be prevented from being damaged by the screen pattern.
The existing hot rolling printing mode is a mode that the surface of the light guide plate after being molded by an extruder is sequentially rolled by a plurality of rollers side by side to form a lattice point structure, so that the pressure of the roller facing the plate is uniform, the consistency of lattice point structure processing is improved, the light guide effect of the light guide plate is improved, and the method is suitable for forming a large-size light guide plate at one time. However, the stress of the light guide plate after the molding of the extruder is not released yet and is in an unstable state, so that the mesh point structure pressed out by the roller has different depths on the plate, and the optical performance and uniformity of the plate are directly affected. However, if shearing and rolling are performed after the temperature is lowered, the shearing force and the rolling pressure easily affect the quality of the plate.
Disclosure of Invention
The invention aims to solve the problems of the prior art by providing a hot rolling production line and a hot rolling process for a light guide plate, which solve the problems of uneven processing of a lattice point structure and inconsistent quality of the light guide plate.
In order to achieve a part of the above objects, the present invention adopts the following technical scheme:
a hot rolling production line of a light guide plate comprises an extruder, a conveying device, a rolling device and a cutting device which are arranged in a butt joint mode in sequence; the rolling device comprises two groups of processing rollers; each group of processing rollers comprises two roller frames, a first roller and a second roller which are respectively rotatably arranged on the two roller frames and are arranged up and down; the first roller of one group of processing rollers is provided with a first net point structure, and the second roller of the other group of processing rollers is provided with a second net point structure.
Further, the first dot structure and the second dot structure are respectively arranged on the two printed boards; the two printed boards are respectively arranged on the first roller or the second roller of each group of processing rollers.
Further, the conveying device is a conveying roller set; the conveying roller set comprises a plurality of conveying rollers which are arranged in parallel.
Further, the two roller frames are respectively provided with a distance adjusting device for adjusting the distance between the first roller and the second roller; the two distance adjusting devices comprise a sliding seat, a power machine and a screw lifting mechanism; the sliding seat is connected to the roller frame in a sliding manner along the up-down direction; the first roller or the second roller bearing in each group of processing rollers is connected to the sliding seat; the nut seat is fixed on the roller frame; one end of the screw lifting mechanism is fixedly connected with the sliding seat, and the other end of the screw lifting mechanism is in threaded fit with the nut seat; and an output shaft of the power machine is connected with the screw lifting mechanism.
Further, the two roller frames comprise a mounting bracket and a fixing bracket with adjustable spacing; the two ends of the first roller and/or the second roller of each group of processing rollers are respectively rotatably arranged on the mounting bracket and the fixing bracket.
Further, the two roller frames comprise a mounting bracket and a fixing bracket with adjustable spacing; the two roller frames comprise roller bases; the fixed support is fixed on the roller base; the mounting bracket is arranged on the parallel sliding rail in a sliding way towards the direction of the fixed bracket; the two ends of the first roller and/or the second roller of each group of processing rollers are respectively connected to the mounting bracket and the fixing bracket through bearings.
Further, the rolling device further comprises a base; the two roller frames are respectively arranged on the base through a horizontal adjusting mechanism, so that the two roller frames can respectively slide along the axial directions of the first roller and the second roller.
Further, the horizontal adjusting mechanism comprises a plurality of slideways which are arranged on the base and are axially parallel to the first roller/the second roller, a driving motor, an installation seat fixed on the base, two adjusting screw rods, a translation seat, a bearing, a driving motor and a driving motor, wherein the two adjusting screw rods are arranged on the installation seat and are connected to the output shaft of the driving motor; the translation seat is fixed on the roller frame; the sliding ways are matched with the bottom of the roller frame in a sliding way.
Compared with the prior art, the invention has the following beneficial effects:
the light guide plate raw materials are heated and molded through the extruder, after the temperature is reduced through the conveying device, the stress of the plate is released to be in a stable state, and compared with the situation that the plate is directly rolled after discharging, the lattice point structure is consistent in quality, and the optical performance and uniformity of the light guide plate are higher; the first net point structure and the second net point structure are respectively arranged on the first roller wheel positioned above the processing roller wheels and the second roller wheel positioned below the processing roller wheels through the two groups of processing roller wheels, net point structures on the upper plate surface and the lower plate surface of the light guide plate are sequentially rolled, and as the pressed net points are concave, the first roller wheel or the second roller wheel which is not provided with the net point structure is arranged on the other one of the processing roller wheels of each group of processing roller wheels, so that the light guide plate is not influenced.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic view of a rolling device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a first roller frame according to the present invention;
FIG. 3 is a schematic view of a second roller frame according to the present invention;
fig. 4 is a schematic diagram of a conveyor according to the present invention.
The following reference numerals are included: the device comprises a first roller 1, a second roller 2, a printed board 3, a sliding seat 4, a power machine 5, a pushing screw 6, a nut seat 7, a base 8, a first mounting bracket 10, a first fixing bracket 11, parallel sliding rails 12, a positioning screw 13, a second mounting bracket 14, a second fixing bracket 15, an upper bottom plate 16, a lower bottom plate 17, a mounting plate 18, a guide plate 19, a trolley 20, a sliding rail 21, a driving motor 22, a mounting seat 23 and a conveying roller 24.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention more clear and easy to understand, the present invention is further described below with reference to the accompanying drawings and the detailed description:
the embodiment is shown in fig. 1 to 4, and the hot rolling production line of the light guide plate comprises an extruder, a conveying device, a rolling device and a cutting device which are sequentially in butt joint; the rolling device comprises two groups of processing rollers; each group of processing rollers comprises two roller frames, a first roller 1 and a second roller 2 which are respectively rotatably arranged on the two roller frames and are arranged up and down; the first roller 1 of one group of processing rollers is provided with a first net point structure, and the second roller 2 of the other group of processing rollers is provided with a second net point structure.
The distance between the outlet of the extruder and the conveying device is 0-3 meters; the distance between the outlet of the conveying device and the rolling device is 6-14 meters. The two groups of processing rollers are respectively connected with a rotating motor for driving the first roller 1 and the second roller 2, and the rotating motor can rotate forward and reversely, so that the plate can be automatically withdrawn. The first roller 1 and the second roller 2 are connected with a heating device, so that the net point structure quality is more uniform. After the light guide plate raw material is extruded and molded into a plate by the extruder, the internal stress is not completely released, and the processing lattice point structure is different in depth at the moment, so that the optical performance and uniformity of the light guide plate are low. Through conveyer buffering, improved panel shaping surface's smoothness to when the roll-in, its stability is higher, makes its heat conduction efficiency and anti shearing force improve, the roll-in and the cutting of later stage panel of being convenient for.
The two roller frames are both in rotary connection with the first roller 1 and the second roller 2 through self-aligning roller bearings with the model of GB/T288-94. The two plate surfaces of the plate are sequentially rolled by the mesh point structures of the two groups of processing rollers which are respectively staggered up and down, so that the problem that the mesh point quality is affected due to the interaction of stamping force of the mesh point structures on two sides to the light guide plate is avoided, and the smoothness of the plane of the light guide plate is improved.
The first dot structure and the second dot structure are respectively arranged on the two printed boards 3; the two printed boards 3 are respectively arranged on the first roller 1 or the second roller 2 of each group of processing rollers.
The printed board 3 is a stainless steel plate, an optical net point structure is processed on the plane of the printed board 3, and the printed board is coiled by a plate coiling machine or a coiling machine and then is arranged on the first roller 1 or the second roller 2. Preferably, the first roller 1 or the second roller 2 has a smooth surface, and screw holes for installing countersunk screws corresponding to the printed board 3 are formed thereon. The dot structure is processed on the plane of the printed board 3, so that the processing is simpler than the processing on the roller of the roller, the concave bottom of the processed dot structure can be smooth, and the optical performance of the light guide plate is improved. The printed board 3 is sleeved and fixed on the first roller 1 or the second roller 2, so that the printed board 3 can be directly disassembled to replace the dot structure.
The conveying device is a conveying roller set; the transfer roller set comprises a plurality of transfer rollers 24 arranged in parallel. Preferably three transfer rollers 24 disposed in order diagonally upward.
The two roller frames are respectively provided with a distance adjusting device for adjusting the distance between the first roller 1 and the second roller 2; the two distance adjusting devices comprise a sliding seat 4, a power machine 5 and a screw lifting mechanism; the sliding seat 4 is connected to the roller frame in a sliding way along the up-down direction; the first roller 1 or the second roller 2 in each group of processing rollers is connected to the sliding seat 4 through a bearing; the nut seat 7 is fixed on the roller frame; one end of the screw lifting mechanism is fixedly connected with the sliding seat 4, and the other end of the screw lifting mechanism is in threaded fit with the nut seat 7; and an output shaft of the power machine 5 is connected with the screw lifting mechanism.
The power machine 5 can be an air cylinder or a motor, the screw lifting mechanism comprises a nut seat 7, a worm wheel arranged in the nut seat 7, a pushing screw 6 in a center hole of the worm wheel in a threaded connection mode, and a worm meshed with an outer ring of the worm wheel, and the power machine 5 is fixed on the nut seat 7 and an output shaft of the power machine is connected with the worm through a coupling. The power machine 5 controls the worm to drive the worm wheel to rotate, so as to drive the pushing screw 6 and the worm wheel to rotate relatively, and finally drive the sliding seat 4 on the pushing screw 6 to move up and down in the axial direction of the center hole of the worm wheel. The roller lifting mechanism is arranged on the roller frames through the nut seat 7, so that the distance adjusting devices can be conveniently assembled and disassembled on different roller frames. The roller shafts of the first roller 1 with the first net point structure and the second roller 2 with the second net point structure are respectively connected with the sliding seats 4 bearings of the two distance adjusting devices. The roller lifting mechanism is arranged on the roller frames through the nut seat 7, so that the distance adjusting devices can be conveniently assembled and disassembled on different roller frames; the rolling interval between the two groups of processing rollers is respectively adjusted by the two distance adjusting devices, so that the rolling of plates with different specifications is facilitated.
The two roller frames comprise a mounting bracket and a fixing bracket with adjustable spacing; the two ends of the first roller 1 and/or the second roller 2 of each group of processing rollers are respectively rotatably arranged on the mounting bracket and the fixed bracket. The roller mounting device is suitable for roller mounting with different lengths by adjusting the distance between the mounting bracket and the fixing bracket, and when a circuit fault occurs, the first roller 1/second roller 2 and the light guide plate in processing are convenient to take down, so that unnecessary losses are reduced.
The two roller frames comprise roller bases; the mounting bracket is fixed on the roller base; the mounting bracket is arranged on the parallel sliding rail 12 in a sliding way towards the direction of the fixed bracket; the two ends of the first roller 1 and/or the second roller 2 of each group of processing rollers are respectively connected to the mounting bracket and the fixing bracket through bearings.
Specifically, the roller base of the first roller frame is U-shaped, and the mounting bracket and the fixing bracket on the first roller frame are a first mounting bracket 10 and a first fixing bracket 11 which are arranged at the two upper ends of the roller base and have the same height; the two ends of the second roller 2 are respectively connected to the two opposite side walls of the roller base through bearings. The number of the parallel sliding rails 12 is two, the parallel sliding rails are axially arranged at the upper end of one side wall of the roller base along the second roller 2, the first mounting bracket 10 and the first fixing bracket 11 are , two ends of the bottom of the first mounting bracket 10 are respectively in sliding fit with the two sliding rails, and the first fixing bracket 11 is fixed at the upper end of the other side wall of the roller frame relative to the first mounting bracket 10. The two groups of distance adjusting devices are respectively arranged on the first mounting bracket 10 and the first fixing bracket 11 in a sliding way up and down; the two ends of the first roller 1 are respectively connected with a sliding seat 4 bearing of the distance adjusting device; the first mounting bracket 10 is fixedly connected with the roller base through a positioning screw 13, and the positioning screw 13 is provided with a hand wheel. When the first roller 1 of the roller frame needs to be replaced, the first roller 1 is clamped through the lifting device, after bearings at two ends of the first roller 1 are respectively taken down, the first roller 1 is integrally moved out through the lifting device, and the first roller 1 above the roller frame is convenient to detach and transport.
The second roller frame comprises a hollow roller base, and the mounting bracket and the fixing bracket on the second roller frame are a second mounting bracket 14 and a second fixing bracket 15. The hollow roller base comprises a lower base plate 17, support columns arranged around the lower base plate 17 and an upper base plate 16 fixed on the support columns. The second mounting bracket 14 and the second fixing bracket 15 are both -shaped, the second mounting bracket 14 and the second fixing bracket 15 are oppositely arranged on the upper bottom plate 16, and the second mounting bracket 14 and the second fixing bracket 15 are the same in height. The second mounting bracket 14 and the second fixing bracket 15 are oppositely arranged on the upper bottom plate 16, the upper parts of the first mounting bracket 10 and the second fixing bracket 15 are respectively provided with a mounting plate 18, and the two mounting plates 18 are respectively connected with bearings at two ends of the first roller 1. The accommodation space of second installing support 14 lower part is greater than upper portion, and the fixed deflector 19 that is equipped with in second installing support 14 lower part relative both sides, and two parallel slide rail 12 are located on upper plate 16 along first running roller 1 axial, and two deflector 19 bottom respectively with two parallel slide rail 12 sliding connection. The two guide plates 19 are respectively fixed with the upper bottom plate 16 through positioning screws 13, wherein the two positioning screws 13 are in transmission connection, and one positioning screw 13 is provided with a hand wheel. Since the second mounting bracket 14 needs to be provided with the first roller 1 and the second roller 2, the bearing capacity is large, and the stability of the second mounting bracket 14 can be enhanced by fixing the two sides below the second mounting bracket 14. The second fixed mounting frame is fixed on the upper bottom plate 16, and two ends of the first roller 1 are respectively connected to the second mounting bracket 14 and the second fixed mounting frame in a bearing way. The two groups of distance adjusting devices are respectively arranged on the second mounting bracket 14 and the second fixing bracket 15 in a sliding way up and down; two ends of the second roller 2 are respectively connected with a sliding seat 4 bearing of the distance adjusting device. Preferably, when the second roller 2 below the roller frame is replaced, the trolley 20 is placed on the upper bottom plate 16, the second roller 2 falls into the trolley 20 after the bearings at two ends of the second roller 2 are removed, and two sides of the trolley 20 are clamped with roller shafts of the second roller 2, so that the second roller 2 below the roller frame is convenient to detach and transport.
The rolling device further comprises a base 8; the two roller frames are respectively arranged on the base 8 through a horizontal adjusting mechanism, so that the two roller frames can respectively slide along the axial directions of the first roller 1 and the second roller 2.
The horizontal adjusting mechanism comprises a plurality of slideways 21 which are arranged on the base 8 and are axially parallel to the first roller 1/the second roller 2, a driving motor 22, a mounting seat 23 fixed on the base 8, two adjusting screw rods which are arranged on the mounting seat 23 in a bearing way and are connected to the output shaft of the driving motor 22, and a translation seat which is connected to the adjusting screw rods in a threaded way; the translation seat is fixed on the roller frame; the sliding ways 21 are slidably matched with the bottom of the roller frame. The horizontal adjusting mechanism is arranged below the two roller frames, so that the relative positions of the two roller surfaces of the light guide plate can be conveniently adjusted.
The hot rolling process of the light guide plate based on the hot rolling production line of the light guide plate comprises the steps of (1) extruding the light guide plate raw material by an extruder to form a plate with the temperature of 200-240 ℃, cooling to 30-60 ℃ by a conveying device, and then entering a rolling device; (2) The plate sequentially passes through a first roller 1 and a second roller 2 of two groups of processing rollers to be rolled, and the first roller 1 and the second roller 2 which are provided with microstructures on the two groups of processing rollers respectively roll two plate surfaces of the plate to form microstructures; (3) cutting the plate material into a block-shaped light guide plate.
Wherein, the optimal temperature is 45 degrees when the light guide plate enters the rolling device from the conveying device.
The step (2) comprises the following steps: the first roller 1/second roller 2 with the net point structure is heated by the heating device, the rotating motors of the first roller 1 and the second roller 2 of the two processing roller groups are turned on, and the plate is sequentially processed on the upper plate surface and the lower plate surface between the first roller 1 and the second roller 2 of the two processing roller groups.
The light guide plate is made of acrylic, and the cutting equipment used in the step (3) is a laser cutting machine. The extruder rolls the lattice point while discharging the plate rolling device, and automatically cuts the lattice point into a plurality of plates at the set datum point after the lattice point is pressed, thereby improving the shearing resistance and the optical lattice point quality of the plates. The datum point is set by light guide plates of different sizes. The length of the rollers of the first roller 1 and the second roller 2 of the two groups of rolling rollers is 6-18 meters, the diameter of the rollers is 2-6 meters, the temperature of the oil temperature machine is 50-160 ℃, and the rotating speed of the rotating motor is 0.5-5 meters per minute.
Before the light guide plate is rolled, the light guide plate is heated and formed by an extruder, the temperature is about 220 ℃, after the light guide plate is conveyed and cooled, the stress of the plate is released to be in a stable state, and compared with the light guide plate which is directly rolled after discharging, the light guide plate has a consistent lattice point structure, and the light guide plate has higher optical performance and uniformity. The upper plate surface and the lower plate surface of the light guide plate are sequentially processed by a first roller 1 and a second roller 2 which are arranged up and down in a staggered manner and used for rolling the lattice points. Then cutting the light guide plates into light guide plates with different specifications according to the rolling reference points of the first roller 1 and the second roller 2, and polishing the light guide plates. Through the processes of forming, conveying and cooling, sequentially rolling and cutting the upper plate surface and the lower plate surface, the light guide plate material is more stable, stress is released, and the optical performance of the plate material and the uniformity of net point structure processing are improved.
Finally, the foregoing embodiments are merely for illustrating the technical solution of the present invention, but not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solution of the present invention, such as selection of motors, hand wheels, lifting devices, screw rods and laser cutters, conventional operation of oil temperature machines and lifting devices, polishing treatment, and installation of bearings, etc., without departing from the spirit and scope of the technical solution of the present invention, and are intended to be encompassed in the scope of the claims of the present invention.
Claims (7)
1. The hot rolling production line of the light guide plate is characterized by comprising an extruder, a conveying device, a rolling device and a cutting device which are arranged in a butt joint mode in sequence; the rolling device comprises two groups of processing rollers; each group of processing rollers comprises two roller frames, a first roller and a second roller which are respectively rotatably arranged on the two roller frames and are arranged up and down; a first net point structure is arranged on a first roller of one group of processing rollers, and a second net point structure is arranged on a second roller of the other group of processing rollers;
the two roller frames comprise a mounting bracket and a fixing bracket with adjustable spacing; the two ends of the first roller and/or the second roller of each group of processing rollers are respectively rotatably arranged on the mounting bracket and the fixed bracket;
both roller frames comprise roller bases; the fixed support is fixed on the roller base; the mounting bracket is arranged on the parallel sliding rail in a sliding way towards the direction of the fixed bracket; the two ends of the first roller and/or the second roller of each group of processing rollers are respectively connected to the mounting bracket and the fixing bracket through bearings;
the roller base of the first roller frame is U-shaped, and the mounting bracket and the fixing bracket on the first roller frame are a first mounting bracket and a first fixing bracket which are arranged at the two upper ends of the roller base and have the same height; the two ends of the second roller are respectively connected to the two opposite side walls of the roller base through bearings;
the two parallel sliding rails are arranged at the upper end of one side wall of the roller base along the axial direction of the second roller, the first mounting bracket and the first fixing bracket are -shaped, two ends of the bottom of the first mounting bracket are respectively in sliding fit with the two parallel sliding rails, and the first fixing bracket is fixed at the upper end of the other side wall of the roller frame relative to the first mounting bracket;
the two roller frames are respectively provided with a distance adjusting device for adjusting the distance between the first roller and the second roller; the two groups of distance adjusting devices are respectively arranged on the first mounting bracket and the first fixing bracket in a sliding way up and down; two ends of the first roller are respectively connected with a sliding seat bearing of the distance adjusting device; the first mounting bracket is fixedly connected with the roller base through a positioning screw rod, and the positioning screw rod is provided with a hand wheel;
the second roller frame comprises a hollow roller base, and the mounting bracket and the fixing bracket on the second roller frame are a second mounting bracket and a second fixing bracket; the hollow roller base comprises a lower bottom plate, support columns arranged around the lower bottom plate and an upper bottom plate fixed on the support columns;
the second mounting bracket and the second fixing bracket are both -shaped, the second mounting bracket and the second fixing bracket are oppositely arranged on the upper bottom plate, and the second mounting bracket and the second fixing bracket are the same in height; the upper parts of the first mounting bracket and the second fixing bracket are respectively provided with mounting plates, and the two mounting plates are respectively connected with bearings at two ends of the first roller;
the accommodating space at the lower part of the second mounting bracket is larger than the upper part, guide plates are fixedly arranged at two opposite sides of the lower part of the second mounting bracket, two parallel sliding rails are axially arranged on the upper bottom plate along the first roller, and the bottom ends of the two guide plates are respectively in sliding connection with the two parallel sliding rails;
the two guide plates are respectively fixed with the upper bottom plate through positioning screws, the two positioning screws are in transmission connection, and one positioning screw is provided with a hand wheel.
2. The hot rolling production line for light guide plates according to claim 1, wherein the first dot structure and the second dot structure are respectively arranged on two printed boards; the two printed boards are respectively arranged on the first roller or the second roller of each group of processing rollers.
3. The hot rolling production line for light guide plates according to claim 1, wherein the conveying device is a conveying roller set; the conveying roller set comprises a plurality of conveying rollers which are arranged in parallel.
4. The hot rolling production line of the light guide plate according to claim 1, wherein the two distance adjusting devices comprise a sliding seat, a power machine and a screw lifting mechanism; the sliding seat is connected to the roller frame in a sliding manner along the up-down direction; the first roller or the second roller bearing in each group of processing rollers is connected to the sliding seat; the nut seat is fixed on the roller frame; one end of the screw lifting mechanism is fixedly connected with the sliding seat, and the other end of the screw lifting mechanism is in threaded fit with the nut seat; and an output shaft of the power machine is connected with the screw lifting mechanism.
5. The hot rolling line for light guide plates according to claim 1, wherein the rolling device further comprises a base; the two roller frames are respectively arranged on the base through a horizontal adjusting mechanism, so that the two roller frames can respectively slide along the axial directions of the first roller and the second roller.
6. The hot rolling production line of the light guide plate according to claim 5, wherein the horizontal adjusting mechanism comprises a plurality of slideways which are arranged on a base and are axially parallel to the first roller/the second roller, a driving motor, a mounting seat fixed on the base, two adjusting screw rods, two bearing bearings, two adjusting screw rods and a translation seat, wherein the two adjusting screw rods are arranged on the mounting seat and are connected to an output shaft of the driving motor, and the translation seat is connected to the adjusting screw rods in a threaded manner; the translation seat is fixed on the roller frame; the sliding ways are matched with the bottom of the roller frame in a sliding way.
7. The hot rolling process based on the hot rolling production line of the light guide plate according to claim 1, comprising the following steps: (1) Extruding the light guide plate raw material by an extruder to form a plate, conveying the plate into a rolling device by a conveying device, and ensuring that the plate is cooled to 30-60 ℃ when entering the rolling device; (2) Sequentially passing the plate between a first roller and a second roller of two groups of processing rollers, and respectively rolling two plate surfaces of the plate through the first roller and the second roller which are provided with the lattice point structures on the two groups of processing rollers to form the lattice point structures; (3) cutting the rolled plate into a block-shaped light guide plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910306834.8A CN109927264B (en) | 2019-04-17 | 2019-04-17 | Hot rolling production line and hot rolling process for light guide plate |
Applications Claiming Priority (1)
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| CN110962354A (en) * | 2019-11-28 | 2020-04-07 | 衡阳科盈钢管有限公司 | Coated outer layer compression roller |
| CN111676641B (en) * | 2020-06-09 | 2021-10-01 | 深圳市德昌旺科技有限公司 | Abnormal point discrimination type mesh belt reinforcing mesh pressing equipment and mesh pressing method thereof |
| CN112720658A (en) * | 2020-12-03 | 2021-04-30 | 大族激光科技产业集团股份有限公司 | Plate feeding equipment |
| CN115889665B (en) * | 2023-03-14 | 2023-05-02 | 龙城明琦科技(常州)有限公司 | Automatic feeding mechanical device for hot forging |
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