阅读说明：本技术 一种新型偏光片贴合设备 (Novel polaroid laminating equipment ) 是由 严光辉 于 2021-07-28 设计创作，主要内容包括：本发明公开了偏光片贴合技术领域的一种新型偏光片贴合设备,包括加工台,所述加工台顶部固定连接有第一固定板,所述第一固定板顶部连接有用于向下压合粘贴偏光片的压合机构,所述第一固定板中部贯穿有与其转动连接的第一转杆,所述第一固定板内部开设有第一滑槽；本发明通过在每次对液晶片进行双面贴合偏光片时,利用定位机构先将液晶片件精准确定,保证每次贴合时的精准度,并配合切换机构使对一面贴合完成的液晶片进行稳定的翻面,保护液晶片,避免人员多次手动参与翻转液晶片,保护液晶片的整洁性,避免多次繁琐清洁液晶片,提高偏光片的贴合效率。(The invention discloses novel polaroid laminating equipment in the technical field of polaroid laminating, which comprises a processing table, wherein the top of the processing table is fixedly connected with a first fixing plate, the top of the first fixing plate is connected with a pressing mechanism for pressing and pasting a polaroid downwards, a first rotating rod in rotary connection with the first fixing plate penetrates through the middle part of the first fixing plate, and a first sliding groove is formed in the first fixing plate; according to the invention, when the polaroid is attached to the two sides of the liquid crystal sheet at each time, the positioning mechanism is utilized to accurately determine the liquid crystal sheet piece firstly, so that the accuracy in attachment at each time is ensured, the liquid crystal sheet which is attached to one side is stably turned over by matching with the switching mechanism, the liquid crystal sheet is protected, personnel are prevented from manually turning over the liquid crystal sheet for many times, the neatness of the liquid crystal sheet is protected, the liquid crystal sheet is prevented from being fussy for many times, and the attaching efficiency of the polaroid is improved.)

1. The utility model provides a novel polaroid laminating equipment, includes processing platform (1), its characterized in that: the processing table is characterized in that a first fixing plate (2) is fixedly connected to the top of the processing table (1), a pressing mechanism for pressing and pasting the polaroid downwards is connected to the top of the first fixing plate (2), a first rotating rod (3) in rotary connection with the first fixing plate penetrates through the middle of the first fixing plate (2), a first sliding groove (4) is formed in the first fixing plate (2), a first sliding block (5) is connected to the first sliding groove (4) in a sliding manner, the first rotating rod (3) penetrates through the first sliding block (5) and is in rotary connection with the first sliding block, a servo motor (6) is fixedly connected to the rear end of the first rotating rod (3), the servo motor (6) is fixedly connected with the first sliding block (5) through two L-shaped connecting blocks (7), a first rotating plate (8) is fixedly connected to the front end of the first rotating rod (3), and a positioning mechanism for supporting and positioning the liquid crystal sheet is connected to the first rotating plate (8), the liquid crystal display panel processing device is characterized in that a switching mechanism is connected to the front side wall of the first fixing plate (2), the switching mechanism is matched with a supporting mechanism and used for enabling a liquid crystal panel to automatically rotate to change the surface, an elastic supporting mechanism is connected to the top of the processing table (1), and the elastic supporting mechanism is used for supporting and protecting the liquid crystal panel.

2. The novel polarizer laminating device of claim 1, wherein: the positioning mechanism comprises two first supporting plates (9), two second sliding grooves (10) are formed in the first rotating plate (8), the inner side walls of the two second sliding grooves (10) are fixedly connected with air springs (11), the outer ends of the two air springs (11) are fixedly connected with the first supporting plates (9), the first supporting plates (9) are connected in the second sliding grooves (10) in a sliding mode, the outer side walls of the two first supporting plates (9) are fixedly connected with two T-shaped sliding blocks (12), the two T-shaped sliding blocks (12) on the same side are connected with first limiting plates (13) in a sliding mode, the tops of the two first limiting plates (13) are rotatably connected with L-shaped limiting blocks (15) through torsion springs (14), the outer surfaces of the two L-shaped limiting blocks (15) are fixedly connected with first pull ropes (16), and the outer side walls of the two first limiting plates (13) are fixedly connected with first fixing blocks (17), and rotate on first limiting plate (13) lateral wall and be connected with first guide bar (18), first stay cord (16) is walked around first guide bar (18) and fixed connection on the preceding lateral wall of first fixed block (17), two L type link (19) of fixedly connected with on first fixed plate (2) surface, two equal fixedly connected with telescopic link (20) in L type link (19) inboard, the left side telescopic link (20) are located first stay cord (16) top, the right side telescopic link (20) are located first stay cord (16) below.

3. The novel polarizer laminating device of claim 2, wherein: the switching mechanism comprises a first guide ring (21), the first guide ring (21) and a first rotating rod (3) are located on the same axis, the first guide ring (21) is embedded in a first fixing plate (2), two second guide rods (22) are fixedly connected to the rear ends of the first supporting plates (9), the second guide rods (22) are used for acting on the first guide ring (21) when the first guide ring (21) extends out, two extrusion rods (23) are fixedly connected to the rear side wall of the first guide ring (21), the two extrusion rods (23) are arranged in a circumferential symmetry mode, the extrusion rods (23) on the left side are higher than the extrusion rods (23) on the right side, an extrusion block (25) is fixedly connected to the outer surface of the first rotating rod (3) through a first connecting plate (24), the extrusion block (25) is used for extruding the extrusion rods (23), an electric cylinder (26) is fixedly connected to the bottom of the first sliding block (5), the electric cylinder (26) is fixedly connected to the inner side wall of the first sliding groove (4), and the outer surfaces of the two extrusion rods (23) are connected with pulling mechanisms used for driving the first guide rod (18) to reset.

4. The novel polarizer laminating device of claim 3, wherein: the pulling mechanism comprises a pulling plate (27), the pulling plate (27) is fixedly connected to the outer surface of the extrusion rod (23), a third sliding groove (28) for the pulling plate (27) to slide back and forth is formed in the first fixing plate (2), a second pulling rope (29) is fixedly connected to the rear surface of the pulling plate (27), a guide wheel (30) is rotatably connected to the rear surface of the first fixing plate (2), and the second pulling rope (29) bypasses the guide wheel (30) and is fixedly connected with the L-shaped connecting block (7).

5. The novel polarizer laminating device of claim 2, wherein: elastic support mechanism includes four first slide bar (31), four processing platform (1) is all run through to first slide bar (31) bottom and rather than sliding connection, four the common fixedly connected with U type roof (32) in first slide bar (31) top, the inboard that U type roof (32) and the bottom surface contact of liquid crystal sheet and be located two first backup pad (9), four the equal fixedly connected with positioning disk (33) in first slide bar (31) bottom, positioning disk (33) and the bottom surface contact of processing platform (1), four all overlap on first slide bar (31) surface and be equipped with first spring (34) that are located between processing platform (1) and U type roof (32).

6. The novel polarizer laminating device of claim 1, wherein: pressing mechanism includes L type mount (35), L type mount (35) fixed connection is at the top of first fixed plate (2), L type mount (35) top bottom surface fixedly connected with telescopic cylinder (36), telescopic cylinder (36) bottom fixedly connected with pressfitting board (37).

7. The novel polarizer laminating device of claim 2, wherein: first limiting plate (13) is inside to be seted up and to supply gliding fourth spout (38) about T type sliding block (12), four equal fixedly connected with second spring (39) in T type sliding block (12) top, the equal fixed connection in second spring (39) top is on the inside wall of fourth spout (38).

Technical Field

The invention relates to the technical field of polaroid laminating, in particular to novel polaroid laminating equipment.

Background

The polaroids are all called as polaroids, the imaging of the liquid crystal display is dependent on polarized light, and all liquid crystals have front and rear polaroids which are tightly attached to liquid crystal glass to form the liquid crystal plate with the total thickness of about 1 mm.

The prior art is pasting the polaroid in-process below the upper and lower face of LCD screen, all needs personnel to turn over the LCD screen at every turn, can only accomplish the laminating of LCD screen single face promptly at every turn, and the paster inefficiency, and after turning over the LCD screen at every turn, personnel contact the binding face of LCD screen, before the turn-over laminating, need clean the LCD screen of turn-over once more, and is very loaded down with trivial details, influences the laminating efficiency of polaroid.

Based on the above, the invention designs a novel polaroid laminating device to solve the above problems.

Disclosure of Invention

The invention aims to provide novel polaroid laminating equipment, which aims to solve the problems that in the prior art, in the process of adhering a polaroid on the upper surface and the lower surface of a liquid crystal screen, personnel are required to turn over the liquid crystal screen every time, namely, the laminating of the single surface of the liquid crystal screen can be only completed every time, the pasting efficiency is low, the personnel contact the laminating surface of the liquid crystal screen after turning over the liquid crystal screen every time, the turned-over liquid crystal screen needs to be cleaned again before turning over and laminating, and the laminating efficiency of the polaroid is affected, and is very complicated.

In order to achieve the purpose, the invention provides the following technical scheme: a novel polaroid laminating device comprises a processing table, wherein a first fixing plate is fixedly connected to the top of the processing table, a laminating mechanism for laminating and adhering a polaroid downwards is connected to the top of the first fixing plate, a first rotating rod in rotary connection with the first fixing plate penetrates through the middle of the first fixing plate, a first sliding groove is formed in the first fixing plate, a first sliding block is connected to the inside of the first sliding groove in a sliding manner, the first rotating rod penetrates through the first sliding block and is in rotary connection with the first sliding block, a servo motor is fixedly connected to the rear end of the first rotating rod, the servo motor is fixedly connected with the first sliding block through two L-shaped connecting blocks, a first rotating plate is fixedly connected to the front end of the first rotating rod, a positioning mechanism for supporting and positioning a liquid crystal sheet is connected to the inside of the first rotating plate, a switching mechanism is connected to the front side wall of the first fixing plate, and is matched with the supporting mechanism to enable the liquid crystal sheet to automatically rotate and change the surface, the top of the processing table is connected with an elastic supporting mechanism, and the elastic supporting mechanism is used for supporting and protecting the liquid crystal sheet;

the positioning mechanism comprises two first supporting plates, two second chutes are formed in the first rotating plate, air springs are fixedly connected to the inner side walls of the two second chutes, the outer ends of the two air springs are fixedly connected with the first supporting plates, the first supporting plates are connected in the second chutes in a sliding manner, two T-shaped sliding blocks are fixedly connected to the outer side walls of the two first supporting plates, the two T-shaped sliding blocks at the same side are jointly and slidably connected with a first limiting plate, the tops of the two first limiting plates are respectively connected with an L-shaped limiting block through torsional springs in a rotating manner, first pull ropes are fixedly connected to the outer surfaces of the two L-shaped limiting blocks, first fixing blocks are fixedly connected to the outer side walls of the two first limiting plates, first guide rods are rotatably connected to the outer side walls of the first limiting plates, and the first pull ropes are wound around the first guide rods and fixedly connected to the front side walls of the first fixing blocks, the outer surface of the first fixing plate is fixedly connected with two L-shaped connecting frames, the inner sides of the two L-shaped connecting frames are fixedly connected with telescopic rods, the left telescopic rod is positioned above the first pull rope, and the right telescopic rod is positioned below the first pull rope;

the switching mechanism comprises a first guide ring, the first guide ring and the first rotating rod are positioned on the same axle center, the first guide ring is embedded in the first fixing plate, the rear ends of the two first supporting plates are fixedly connected with second guide rods, the second guide rod is used for acting with the first guide ring when the first guide ring extends out, two extrusion rods are fixedly connected to the rear side wall of the first guide ring and are circumferentially and symmetrically arranged, the left side of the extrusion rod is higher than the right side of the extrusion rod, the outer surface of the first rotating rod is fixedly connected with an extrusion block through a first connecting plate, the extrusion block is used for extruding the extrusion rods, the bottom of the first sliding block is fixedly connected with an electric cylinder, the electric cylinder is fixedly connected to the inner side wall of the first sliding chute, and the outer surfaces of the two extrusion rods are both connected with a pulling mechanism used for driving the first guide rod to reset;

the pulling mechanism comprises a pulling plate, the pulling plate is fixedly connected to the outer surface of the extrusion rod, a third sliding groove for the pulling plate to slide back and forth is formed in the first fixing plate, a second pull rope is fixedly connected to the rear surface of the pulling plate, a guide wheel is rotatably connected to the rear surface of the first fixing plate, and the second pull rope bypasses the guide wheel and is fixedly connected with the L-shaped connecting block;

the elastic supporting mechanism comprises four first sliding rods, the bottom ends of the four first sliding rods penetrate through the processing table and are in sliding connection with the processing table, the top ends of the four first sliding rods are fixedly connected with a U-shaped top plate together, the U-shaped top plate is in contact with the bottom surface of the liquid crystal sheet and located on the inner sides of the two first supporting plates, the bottom ends of the four first sliding rods are fixedly connected with positioning discs, the positioning discs are in contact with the bottom surface of the processing table, and first springs located between the processing table and the U-shaped top plate are sleeved on the outer surfaces of the four first sliding rods;

the pressing mechanism comprises an L-shaped fixing frame, the L-shaped fixing frame is fixedly connected to the top of the first fixing plate, a telescopic cylinder is fixedly connected to the bottom surface of the top of the L-shaped fixing frame, and a pressing plate is fixedly connected to the bottom end of the telescopic cylinder;

first limiting plate is inside to be seted up and to supply gliding fourth spout about the T type sliding block, four equal fixedly connected with second spring in T type sliding block top, the equal fixed connection in second spring top is on the inside wall of fourth spout.

Compared with the prior art, the invention has the beneficial effects that:

1. according to the invention, when the polaroid is attached to the two sides of the liquid crystal sheet at each time, the positioning mechanism is utilized to accurately determine the liquid crystal sheet, so that the accuracy in each attaching process is ensured, the liquid crystal sheet attached to one side is stably turned over by matching with the switching mechanism, the liquid crystal sheet is protected, personnel are prevented from manually turning over the liquid crystal sheet for multiple times, the tidiness of the liquid crystal sheet is protected, the liquid crystal sheet is prevented from being cleaned repeatedly, and the attaching efficiency of the polaroid is improved;

2. according to the liquid crystal piece positioning device, the U-shaped top plate is arranged at the bottom of the liquid crystal piece, when the first rotating plate rotates the liquid crystal piece to be in a horizontal state, the first spring is used for extruding the U-shaped top plate to enable the U-shaped top plate and the first sliding rod to slide, the bottom end of the first sliding rod is limited by the positioning disc, the U-shaped top plate is enabled to be in contact with the bottom of the liquid crystal piece, when the positioning mechanism drives the liquid crystal piece to rotate, the U-shaped top plate is downwards extruded to enable the U-shaped top plate to downwards move, after the positioning mechanism drives the liquid crystal piece to rotate for a certain degree, the U-shaped top plate is attached to the bottom of the liquid crystal piece again under the action of the first spring, when the liquid crystal piece is put down, the U-shaped top plate is just placed at the top of the U-shaped top plate to support the liquid crystal piece, damage to the liquid crystal piece is avoided, and accurate positioning of the liquid crystal piece by the positioning mechanism every time is guaranteed.

Drawings

FIG. 1 is a first perspective view of the general construction of the present invention;

FIG. 2 is a second perspective view of the general construction of the present invention;

FIG. 3 is a third perspective view of the overall structure of the present invention (hiding the pressing mechanism);

FIG. 4 is a schematic structural view of a first fixing plate and a first sliding chute according to the present invention;

FIG. 5 is a schematic structural view of a first limiting plate and a third sliding chute according to the present invention;

FIG. 6 is an enlarged view of the structure at A in FIG. 5;

FIG. 7 is a schematic view of the first rotating plate and the first pull rope according to the present invention;

FIG. 8 is an enlarged view of the structure at B in FIG. 7;

fig. 9 is a schematic structural diagram of the switching structure and the first rotating rod (hiding the first fixing plate) of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

the machining table comprises a machining table 1, a first fixing plate 2, a first rotating rod 3, a first sliding chute 4, a first sliding block 5, a servo motor 6, an L-shaped connecting block 7, a first rotating plate 8, a first supporting plate 9, a second sliding chute 10, an air spring 11, a T-shaped sliding block 12, a first limiting plate 13, a torsion spring 14, an L-shaped limiting block 15, a first pull rope 16, a first fixing block 17, a first guide rod 18, an L-shaped connecting frame 19, a telescopic rod 20, a first guide ring 21, a second guide rod 22, an extrusion rod 23, a first connecting plate 24, an extrusion block 25, an electric cylinder 26, a pull plate 27, a third sliding chute 28, a second pull rope 29, a guide wheel 30, a first sliding rod 31, a U-shaped top plate 32, a positioning disc 33, a first spring 34, an L-shaped fixing frame 35, a telescopic air cylinder 36, a press-fit plate 37, a fourth sliding chute 38 and a second spring 39.

Detailed Description

Referring to fig. 1-9, the present invention provides a technical solution: a novel polaroid laminating device comprises a processing table 1, wherein a first fixing plate 2 is fixedly connected to the top of the processing table 1, a laminating mechanism for laminating and adhering a polaroid downwards is connected to the top of the first fixing plate 2, a first rotating rod 3 which is rotatably connected with the first fixing plate 2 penetrates through the middle part of the first fixing plate 2, a first sliding chute 4 is formed in the first fixing plate 2, a first sliding block 5 is slidably connected into the first sliding chute 4, the first rotating rod 3 penetrates through the first sliding block 5 and is rotatably connected with the first sliding block 5, a servo motor 6 is fixedly connected to the rear end of the first rotating rod 3, the servo motor 6 is fixedly connected with the first sliding block 5 through two L-shaped connecting blocks 7, a first rotating plate 8 is fixedly connected to the front end of the first rotating rod 3, a positioning mechanism for supporting and positioning a liquid crystal sheet is connected into the first rotating plate 8, a switching mechanism is connected to the front side wall of the first fixing plate 2, and the switching mechanism is matched with the supporting mechanism for automatically rotating and switching the liquid crystal sheet, the top of the processing table 1 is connected with an elastic supporting mechanism which is used for supporting and protecting the liquid crystal sheet;

the positioning mechanism comprises two first supporting plates 9, two second chutes 10 are arranged in a first rotating plate 8, air springs 11 are fixedly connected on the inner side walls of the two second chutes 10, the outer ends of the two air springs 11 are fixedly connected with the first supporting plates 9, the first supporting plates 9 are slidably connected in the second chutes 10, two T-shaped sliding blocks 12 are fixedly connected on the outer side walls of the two first supporting plates 9, the two T-shaped sliding blocks 12 on the same side are jointly and slidably connected with first limiting plates 13, the tops of the two first limiting plates 13 are rotatably connected with L-shaped limiting blocks 15 through torsion springs 14, first pull ropes 16 are fixedly connected on the outer surfaces of the two L-shaped limiting blocks 15, first fixing blocks 17 are fixedly connected on the outer side walls of the two first limiting plates 13, first guide rods 18 are rotatably connected on the outer side walls of the first limiting plates 13, the first pull ropes 16 bypass the first guide rods 18 and are fixedly connected on the front side walls of the first fixing blocks 17, the outer surface of the first fixing plate 2 is fixedly connected with two L-shaped connecting frames 19, the inner sides of the two L-shaped connecting frames 19 are fixedly connected with telescopic rods 20, the left telescopic rod 20 is positioned above the first pull rope 16, and the right telescopic rod 20 is positioned below the first pull rope 16;

the switching mechanism comprises a first guide ring 21, the first guide ring 21 and a first rotating rod 3 are positioned on the same axis, the first guide ring 21 is embedded in a first fixing plate 2, the rear ends of two first supporting plates 9 are fixedly connected with a second guide rod 22, the second guide rod 22 is used for acting with the first guide ring 21 when the first guide ring 21 extends out, the rear side wall of the first guide ring 21 is fixedly connected with two extrusion rods 23, the two extrusion rods 23 are circumferentially and symmetrically arranged, the left extrusion rod 23 is higher than the right extrusion rod 23, an extrusion block 25 is fixedly connected to the outer surface of the first rotating rod 3 through a first connecting plate 24, the extrusion block 25 is used for extruding the extrusion rods 23, the bottom of the first sliding block 5 is fixedly connected with an electric cylinder 26, the electric cylinder 26 is fixedly connected to the inner side wall of the first sliding chute 4, and the outer surfaces of the two extrusion rods 23 are both connected with a pulling mechanism for driving the first guide rod 18 to reset;

the pulling mechanism comprises a pulling plate 27, the pulling plate 27 is fixedly connected to the outer surface of the extrusion rod 23, a third sliding groove 28 for the pulling plate 27 to slide back and forth is formed in the first fixing plate 2, a second pull rope 29 is fixedly connected to the rear surface of the pulling plate 27, a guide wheel 30 is rotatably connected to the rear surface of the first fixing plate 2, and the second pull rope 29 bypasses the guide wheel 30 and is fixedly connected with the L-shaped connecting block 7;

when the equipment works, the first rotating plate 8 is kept in a horizontal state under the action of the first rotating rod 3, so that the two first supporting plates 9 are in a horizontal state, the two first limiting plates 13 are in a vertical state, then a liquid crystal sheet needing to be subjected to double-sided pasting of a polaroid is placed at the tops of the two first supporting plates 9, the two first limiting plates 13 are matched with the first rotating plate 8 to position the liquid crystal sheet at a central position, the polaroid can be accurately pasted on the liquid crystal sheet, at the moment, the first pull rope 16 is pulled by the telescopic rod 20 to open the two L-shaped limiting blocks 15, then the pressing mechanism is started to press the conveyed polaroid downwards to enable the polaroid to be pasted on the top of the liquid crystal sheet, after the pasting is completed, the pressing mechanism is reset, the servo motor 6 is started to drive the first rotating rod 3 and the first rotating plate 8 to rotate, the first rotating plate 8 drives the first supporting plates 9 and the first limiting plates 13 to drive the liquid crystal sheet with the top pasted on the top to rotate together, the telescopic rod 20 is slowly released to tighten the first pull rope 16, the two L-shaped limiting blocks 15 rotate inwards under the action of the torsion spring 14 to block the top of the liquid crystal sheet and prevent the liquid crystal sheet from falling off when the liquid crystal sheet is turned over, the liquid crystal sheet is protected, after the first rotary rod 3 drives the second guide rod 22 on the first support plate 9 to separate from the guide surface of the first guide ring 21, the first rotary rod 3 continues to rotate, the first connecting plate 24 drives the extrusion block 25 to extrude the extrusion block 25, so that the extrusion rod 23 and the first guide ring 21 move forwards, the first guide ring 21 protrudes, the extrusion rod 23 pulls the plate 27 to tighten the second pull rope 29 which is originally loosened, then the first rotary rod 3 continues to rotate to compress the elastic support mechanism, when the second guide rod 22 on the right side rotates towards the anticlockwise plate, the second guide rod 22 and the extruded first guide ring 21 act to extrude the two second guide rods 22 outwards simultaneously, the second guide rods 22, the first supporting plate 9 and the first limiting plate 13 are enabled to simultaneously move outwards to slowly separate from the liquid crystal sheet, when the first rotating plate 8 rotates anticlockwise for 180 degrees, the two second guide rods 22 are squeezed to drive the first supporting plate 9 to just separate from the liquid crystal sheet, at the moment, the first pull rope 16 is pulled by the telescopic rod 20 again, the first pull rope 16 pulls the L-shaped limiting block 15 to open the L-shaped limiting block 15, the liquid crystal sheet falls on the top of the elastic supporting mechanism to turn over the liquid crystal sheet, the surface of the liquid crystal sheet which is not pasted is positioned above, the surface which is pasted is positioned below, then the electric cylinder 26 begins to retract to drive the first sliding block 5 and the first rotating rod 3 to move downwards, the first rotating rod 3 drives the first rotating plate 8, the first supporting plate 9 and the first limiting plate 13 to move downwards, so that the opened first supporting plate 9 crosses the liquid crystal sheet, and the first supporting plate 9 drives the second guide rods 22 to move downwards, and when the first slider 5 moves downwards, the second pull rope 29 is pulled through the L-shaped connecting block 7, the second pull rope 29 drives the pull plate 27 and the extrusion rod 23 to move towards the rear side, so that the first guide ring 21 retracts into the first fixing plate 2 again, the second guide rod 22 cannot be extruded, when the first support plate 9 passes over the liquid crystal, the first support plate 9 slides to the bottom of the liquid crystal again under the action of the air spring 11, the liquid crystal is positioned again by matching with the first limit plate 13, the pressing mechanism at the top is started again, the polaroids are pressed and adhered to the other side of the liquid crystal again, then the servo motor 6 rotates reversely, the first rotating rod 3 and the first rotating plate 8 are driven to rotate 180 degrees along the pointer for resetting, because at the moment, the first rotating rod 3 is not coaxial with the first rotating ring, when the first rotating rod 3 rotates, the extrusion rod 23 cannot be extruded by the guide block, and the influence of the first guide ring 21 on the first rotating rod 3 when resetting is avoided, after first commentaries on classics board 8 resets, electric jar 26 stretches out, it resets to move up through first slider 5 drive first bull stick 3, make first bull stick 3 once more with first guide ring 21 coaxial, accomplish the two-sided automatic laminating polaroid to a liquid crystal sheet, thereby realize when carrying out two-sided laminating polaroid to the liquid crystal sheet at every turn, utilize positioning mechanism earlier with liquid crystal sheet spare accurate definite, guarantee the precision when laminating at every turn, and cooperation switching mechanism makes the liquid crystal sheet of accomplishing the laminating of one side carry out stable turn-ups, protect the liquid crystal sheet, avoid personnel to participate in the upset liquid crystal sheet manually many times, protect the clean and tidy nature of liquid crystal sheet, avoid loaded down with trivial details cleaning solution wafer many times, improve the laminating efficiency of polaroid.

As a further scheme of the present invention, the elastic support mechanism includes four first slide bars 31, bottom ends of the four first slide bars 31 all penetrate through the processing table 1 and are slidably connected therewith, top ends of the four first slide bars 31 are fixedly connected with a U-shaped top plate 32 together, the U-shaped top plate 32 is in contact with a bottom surface of the liquid crystal sheet and is located inside the two first support plates 9, bottom ends of the four first slide bars 31 are fixedly connected with positioning discs 33, the positioning discs 33 are in contact with the bottom surface of the processing table 1, and outer surfaces of the four first slide bars 31 are all sleeved with first springs 34 located between the processing table 1 and the U-shaped top plate 32; when the liquid crystal display panel turnover switching attaching surface is in operation, the liquid crystal display panel needs to be turned over 180 degrees at each time when the liquid crystal display panel is turned over to be switched to be attached, then the liquid crystal display panel is stably placed at a certain determined position so as to be convenient for clamping the liquid crystal display panel again, the rotation of the liquid crystal display panel is not influenced, the U-shaped top plate 32 is stably placed at the bottom of the liquid crystal display panel, when the first rotating plate 8 drives the liquid crystal display panel to be in a horizontal state, the U-shaped top plate 32 is squeezed by the first spring 34 to enable the U-shaped top plate 32 and the first sliding rod 31 to slide, the bottom end of the first sliding rod 31 is limited by the positioning disc 33 to enable the U-shaped top plate 32 to be contacted with the bottom of the liquid crystal display panel, when the positioning mechanism drives the liquid crystal display panel to rotate, the U-shaped top plate 32 is downwards moved, after the positioning mechanism drives the liquid crystal display panel to rotate 180 degrees, the U-shaped top plate 32 is attached to the bottom of the liquid crystal display panel again under the action of the first spring 34, when the liquid crystal display panel is put down, the liquid crystal sheet is supported, so that the damage of the liquid crystal sheet is avoided, and the accurate positioning of the positioning mechanism to the liquid crystal sheet piece at each time is ensured.

As a further scheme of the present invention, the pressing mechanism includes an L-shaped fixing frame 35, the L-shaped fixing frame 35 is fixedly connected to the top of the first fixing plate 2, a telescopic cylinder 36 is fixedly connected to the bottom surface of the top of the L-shaped fixing frame 35, and a pressing plate 37 is fixedly connected to the bottom end of the telescopic cylinder 36; when the polarizer laminating machine works, the polarizer needs to be laminated and adhered on the surface of the liquid crystal sheet, when the polarizer needs to be laminated and adhered on the surface of the liquid crystal sheet, the telescopic air cylinder 36 is started to drive the laminating plate 37 to move downwards, so that the laminating plate 37 laminates and adheres the polarizer on the surface of the liquid crystal sheet to complete lamination,

as a further scheme of the invention, a fourth sliding chute 38 for the T-shaped sliding blocks 12 to slide up and down is formed in the first limiting plate 13, the tops of the four T-shaped sliding blocks 12 are fixedly connected with second springs 39, and the top ends of the second springs 39 are fixedly connected to the inner side wall of the fourth sliding chute 38; the during operation, because the liquid crystal display is driven at every turn and is rotated 180 backs, need reuse first backup pad 9 to support the liquid crystal display, after the liquid crystal display was driven the upset, second spring 39 dragged T type sliding block 12 and drives first backup pad 9 and slide down along fourth spout 38, make two first backup pads 9 slide down fast, are in the bottom position of first limiting plate 13 once more, are favorable to first backup pad 9 to carry out quick transposition centre gripping to the liquid crystal display.