A fixture for polarizer laser cutting machine

Abstract

The present invention relates to the field of polarizer cutting and processing technology, and specifically proposes a fixture for a polarizer laser cutting machine, including: a fixing table, a flattening end-pull mechanism, a suction and bending reduction mechanism, and a pressing mechanism. The present invention uses the flattening end-pull mechanism to absorb the tops of the four corners of the polarizer, and straightens and flattens the polarizer in the width direction and the length direction, so as to avoid the polarizer placed on the supporting seat from bending and warping, which affects the accuracy of the subsequent cutting size. The flattening end-pull mechanism cooperates with the suction and bending reduction mechanism and the pressing mechanism to perform negative pressure suction and fixation on the flattened polarizer and press during partial cutting, which greatly improves the flatness of the polarizer fixation. The air blowing group cooperates with the coolant to cool the cutting area closed by the pressing mechanism, so as to avoid bending and deformation of the cut part of the polarizer due to temperature changes, thereby improving the polarizer fixation and cutting quality.

Description

Technical Field

[0001] The invention relates to the technical field of polarizer cutting and processing, and specifically proposes a clamp for a polarizer laser cutting machine. Background Art

[0002] Polarizer is a key component in optical display technology and is widely used in liquid crystal displays (LCDs), organic light-emitting diodes (OLEDs) and other optical devices. Its main function is to convert non-polarized light emitted by natural light or backlight into linearly polarized light, thereby controlling the passage and blocking of light to achieve image display and contrast enhancement. In order to ensure the accuracy of polarizer cutting, laser cutting machines are currently used to cut polarizers, and polarizers are fixed by negative pressure adsorption.

[0003] However, before the polarizer is placed on the cutting table, it is often bent at the edge due to improper placement and temperature changes during previous production, making it difficult to place the polarizer flat on the cutting table. The current single negative pressure adsorption method of fixing the polarizer makes it difficult to keep the polarizer flat during cutting, thereby reducing the accuracy of the subsequent laser cutting machine in cutting the polarizer. In addition, during the polarizer cutting process, the cut part of the polarizer is also prone to bending and deformation due to temperature differences, which in turn affects the quality of the polarizer. Summary of the invention

[0004] In view of the above problems, an embodiment of the present application provides a fixture for a polarizer laser cutting machine to solve the technical problems in the related art.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the present application provides the following technical solution: a clamp for a polarizer laser cutting machine, comprising: a fixed table, a supporting seat is installed on the top of the fixed table through supporting legs, the supporting seat is a rectangular cavity structure, and a flattening end pulling mechanism is commonly installed on both sides of the supporting seat arranged along its length direction.

[0006] The flattening end-pull mechanism is used to straighten and flatten the polarizer placed on the supporting seat in the width direction and the length direction.

[0007] The support seat is provided with a solid absorption and bending reduction mechanism, which includes a plurality of adsorption holes opened at the top of the support seat and connected with its inner cavity, an adsorption connection group connected with the plurality of adsorption holes is installed on the fixed platform, and the support seat stores cooling liquid for cooling the top of the support seat.

[0008] In a possible implementation, the adsorption connection group includes a mounting groove opened at the bottom of the fixing platform, a mesh-arranged connecting pipe is installed in the mounting groove, and a vertical pipe corresponding to the adsorption holes and connected is installed on the top of the connecting pipe.

[0009] In a possible implementation, an arc-shaped rubber ring is installed at the top edge of the adsorption hole.

[0010] A pressing mechanism for pressing the upper end surface of the polarizer is installed on the fixed platform, and the pressing mechanism includes a gantry installed on the top of the fixed platform and sliding along the width direction thereof, a horizontal section of the gantry is connected with a sliding block sliding along the length direction thereof and located above a supporting seat, a top cover is installed at the lower end of the sliding block, a sealing cover located below the top cover and connected to the top cover for up and down sliding is installed on the sliding block through a supporting group, a retracting spring is installed between the sealing cover and the top cover, an expansion frame is installed at the lower end of the sealing cover, a protective gasket is installed together with the lower end of the expansion frame and the sealing cover, and a lifting drive group for driving the sealing cover to move up and down is installed on the supporting group.

[0011] A laser cutting machine is slidably mounted on the lower end of the top cover via an electric slider, and an air blowing group is mounted on the sealing cover, the air blowing group being used to blow air to the cutting area when the laser cutting machine cuts the polarizer.

[0012] In one possible implementation, the flattening end-pull mechanism includes connecting seats installed on both sides of a supporting seat arranged along its length direction, a guiding inclined seat installed on the side of the connecting seat away from the supporting seat, a pulling plate slidably connected to the connecting seat, an I-shaped frame slidably connected to the top of the pulling plate, support rollers are commonly installed at both ends of the I-shaped frame located above the supporting seat, and the lower end surfaces of the other two ends of the I-shaped frame are installed with abutment rods that abut against the top of the guiding inclined seat, adsorption parts sliding along the axial direction are installed at both ends of the support roller, a return spring is installed between the adsorption parts and the support roller, guide components for extruding and guiding the adsorption parts are installed at the four right angles of the supporting seat, and an end-pull driving group for driving the pulling plate to move horizontally during its movement is installed on the gantry.

[0013] In one possible implementation, the end-pull drive group includes a spring groove opened on the top of the connecting seat and slidably connected to the pull plate, the spring groove and the pull plate are connected by a push spring, the connecting seat is provided with through holes that pass through both ends of the connecting seat in the length direction and are connected to the spring groove, the gantry is provided with plug rods that are symmetrically arranged along the length direction and slidably connected to the through holes one by one, the end of the plug rod is rollingly connected to the side close to the pull plate, and a wedge block that cooperates with the ball on the plug rod is installed in the middle of the pull plate.

[0014] In a possible implementation, the adsorption member includes a hollow roller slidably plugged into the end of the support roller, and the lower end of the annular wall of the hollow roller is provided with suction holes that are evenly arranged and connected to the inner cavity thereof.

[0015] In a possible implementation, the guide assembly includes an inclined guide plate fixedly connected to the upper end of the support seat through a connecting strip, and a ball is rollingly connected to the end of the adsorption member.

[0016] In a possible implementation, the support group includes inclined plates installed on both sides of the sliding blocks arranged along the width direction, and a support frame connected to the sealing cover for vertical sliding is fixedly installed at the lower end of the inclined plate.

[0017] In one possible implementation, the lifting drive group includes a rectangular through slot that runs through the support frame from top to bottom. The lower end of the support frame is rotatably connected to a rotating shaft through an ear plate that is arranged and fixedly installed along its width direction. A tilting plate is fixedly sleeved on the rotating shaft. The lower end of the tilting plate is located above the expansion frame. The upper end of the tilting plate passes through the rectangular through slot. A two-way cylinder is installed on the top of the top cover. Both telescopic ends of the two-way cylinder are installed with pulling frames. The two pulling frames are respectively slidably sleeved on the two tilting plates, and the pulling frames are located above the support frame.

[0018] In one possible implementation, the blowing group includes an air blowing pipe installed on the side wall of the sealing cover and connected thereto, and a pipe rack is embedded on the inner wall of the sealing cover near the lower end, and evenly arranged dust removal nozzles are installed on the pipe rack, and a suction pipe connected thereto and passing through the sealing cover is installed on the pipe rack.

[0019] The above one or more technical solutions in the embodiments of the present invention have at least one of the following beneficial effects: 1. The present invention uses a flattening end-pull mechanism to adsorb the tops of the four corners of the polarizer, and straightens and flattens the polarizer in the width and length directions, thereby avoiding the polarizer placed on the supporting seat from bending and warping, which affects the accuracy of subsequent cutting dimensions. The flattening end-pull mechanism cooperates with the suction and bending reduction mechanism and the pressing mechanism to perform negative pressure adsorption and fixation on the flattened polarizer, as well as press fixation during local cutting, which greatly improves the flatness of the polarizer fixation. The air blowing group cooperates with the coolant to cool the cutting area closed by the pressing mechanism, thereby avoiding bending and deformation of the cut part of the polarizer due to temperature changes, thereby improving the fixation and cutting quality of the polarizer.

[0020] 2. The support seat in the present invention cooperates with the coolant and the blowing group to greatly reduce the impact of laser heat on the support seat. At the same time, the support seat can also support the polarizer smoothly, thereby improving the flatness of the polarizer fixation and avoiding slight deformation of the polarizer due to external force or temperature changes during the fixing process, which may affect the cutting accuracy.

[0021] 3. An arc-shaped rubber ring is installed at the top edge of the adsorption hole in the present invention, so as to prevent the adsorption hole from damaging the polarizer when adsorbing and fixing the polarizer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0024] Figure 2 It is a three-dimensional structural schematic diagram of the pressing mechanism of the present invention.

[0025] Figure 3 It is a partial three-dimensional structural schematic diagram of the flattening end pulling mechanism of the present invention.

[0026] Figure 4 It is a top sectional view of the flattening end pulling mechanism of the present invention.

[0027] Figure 5 yes Figure 1 Main sectional view.

[0028] Figure 6 yes Figure 5 Enlarged view of point A in .

[0029] Figure 7 yes Figure 5 Enlarged view of point B in .

[0030] Figure 8 It is a structural schematic diagram of the supporting seat and the adsorption hole of the present invention.

[0031] Figure numerals: 1, fixed platform; 2, supporting seat; 3, flattening end pulling mechanism; 30, connecting seat; 31, guiding inclined seat; 32, pulling plate; 33, I-shaped frame; 34, supporting roller; 35, resisting rod; 36, adsorption member; 361, suction hole; 37, reset spring; 38, guide assembly; 380, inclined guide plate; 381, connecting strip; 39, end pulling drive group; 390, spring groove; 391, resisting spring; 392, inserting rod; 393, wedge block; 4, suction and bending mechanism; 40, adsorption connecting group; 401, installation groove; 402, connecting pipe; 403, vertical Straight tube; 41. Coolant; 430. Arc rubber ring; 5. Pressing mechanism; 50. Gantry; 51. Sliding block; 52. Top cover; 53. Support group; 530. Inclined plate; 531. Support frame; 54. Sealing cover; 55. Retracting spring; 56. Expansion frame; 57. Protective gasket; 58. Lifting drive group; 580. Rectangular through groove; 581. Crank plate; 582. Two-way cylinder; 583. Pulling frame; 59. Blowing group; 590. Blowing pipe; 591. Pipe rack; 592. Dust removal nozzle; 593. Straw; 6. Laser cutting machine; 7. Polarizer. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] In order to enable those skilled in the art to better understand the scheme of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] See also Figure 1 and Figure 5 A fixture for a polarizer laser cutting machine comprises: a fixed platform 1, a supporting seat 2 is installed on the top of the fixed platform 1 through supporting legs, the supporting seat 2 is a rectangular cavity structure, and a flattening end pulling mechanism 3 is installed on both sides of the supporting seat 2 arranged along its length direction. The flattening end pulling mechanism 3 is used to straighten and flatten the polarizer 7 placed on the supporting seat 2 in the width direction and the length direction.

[0035] See also Figure 1 , Figure 5 and Figure 8The support seat 2 is provided with a solid absorption and bending reduction mechanism 4, which includes a plurality of adsorption holes opened on the top of the support seat 2 and connected with its inner cavity, and an adsorption connection group 40 connected with the plurality of adsorption holes is installed on the fixed platform 1. The support seat 2 stores a coolant 41 for cooling the top of the support seat 2. The coolant 41 is used to cool the polarizer 7 through the support seat 2 when the laser cutting machine 6 cuts the polarizer 7, so as to avoid slight deformation of the cutting position of the polarizer 7 due to the high temperature.

[0036] The polarizer 7 is placed on the top of the supporting seat 2, and then the tops of the four corners of the polarizer 7 are adsorbed by the flattening end pulling mechanism 3, and the polarizer 7 is straightened and flattened in the width direction and the length direction, so as to avoid the polarizer 7 placed on the supporting seat 2 from bending and warping, which affects the subsequent cutting size accuracy.

[0037] After the polarizer 7 is straightened and flattened, the adsorption connecting group 40 cooperates with the external air pump to make the adsorption holes evenly adsorb and fix the lower end surface of the polarizer 7. At this time, the flattening end pulling mechanism 3 no longer straightens the polarizer 7, because the polarizer 7 is no longer complete after a part of it is cut. At this time, if the flattening end pulling mechanism 3 continues to straighten the polarizer 7, it is easy to cause the polarizer 7 to be unevenly stressed and deformed, affecting the size when it is cut again later.

[0038] See also Figure 1 and Figure 5 The adsorption connecting group 40 includes a mounting groove 401 opened at the bottom of the fixing platform 1, a connecting pipe 402 arranged in a mesh is installed in the mounting groove 401, and a vertical pipe 403 corresponding to and connected with the adsorption holes is installed on the top of the connecting pipe 402. The connecting pipe 402 is connected to an external air pump, and the lower end surface of the polarizer 7 is uniformly adsorbed through the vertical pipe 403 and the adsorption holes.

[0039] See also Figure 5 and Figure 6 An arc-shaped rubber ring 430 is installed at the top edge of the adsorption hole to avoid the problem of scratching the polarizer 7 when the adsorption hole adsorbs and fixes the polarizer 7.

[0040] See also Figure 1 , Figure 2 , Figure 5 and Figure 6The fixed platform 1 is provided with a pressing mechanism 5 for pressing the upper end surface of the polarizer 7, and the pressing mechanism 5 includes a gantry 50 installed on the top of the fixed platform 1 and sliding along the width direction thereof, and the horizontal section of the gantry 50 is connected with a sliding block 51 which slides along the length direction thereof and is located above the supporting seat 2, and a top cover 52 is installed at the lower end of the sliding block 51, and a sealing cover 54 which is located below the top cover 52 and is connected to the top cover 52 for sliding up and down movement is installed on the sliding block 51 through a supporting group 53, and a tension spring 55 is installed between the sealing cover 54 and the top cover 52, and an expansion frame 56 is installed at the lower end of the sealing cover 54, and a protective gasket 57 is installed together with the lower end of the expansion frame 56 and the sealing cover 54, and a lifting driving group 58 for driving the sealing cover 54 to move up and down is installed on the supporting group 53.

[0041] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 The laser cutting machine 6 is slidably mounted on the lower end of the top cover 52 through an electric slider, and a blowing group 59 is installed on the sealing cover 54. The blowing group 59 is used to blow air to the cutting area when the laser cutting machine 6 cuts the polarizer 7.

[0042] In the initial state, the gantry 50 is located at the wide side of one side of the supporting seat 2 to facilitate the placement of the polarizer 7, and the distance between the laser cutting machine 6 and the top of the supporting seat 2 is locked after debugging. When the polarizer 7 is cut thereafter, the laser cutting machine 6 only moves along the length and width directions of the polarizer 7.

[0043] The lifting drive group 58 drives the sealing cover 54 to move downward until the sealing cover 54 and the protective gasket 57 on the lower end surface of the expansion frame 56 are pressed against the polarizer 7, which not only realizes the pressing and fixing of the top of the polarizer 7, but also realizes the partial sealing of the polarizer 7, further preventing the polarizer 7 from deformation. At the same time, when the laser cutting machine 6 performs partial rectangular cutting on the polarizer 7, the blowing group 59 blows air into the cutting area to help blow away the melt and residue generated during the cutting process to prevent them from being deposited on the cutting edge and adhering to the support seat 2. In addition, the gas can also play a cooling role to reduce the heat transferred to the support seat 2; after the cutting is completed, the blowing group 59 can also absorb the smoke, melt and residue generated during the cutting, keep the working environment clean, reduce the risk of contamination or damage to the support seat 2, and thus help to improve the accuracy of the subsequent placement of the polarizer 7 for cutting.

[0044] Afterwards, the lifting drive group 58 no longer presses the sealing cover 54, and the sealing cover 54 moves upward under the elastic force of the tension spring 55. The driving source connected to the sliding block 51 and the external driving source connected to the gantry 50 cooperate to drive the sliding block 51 to move intermittently along the length and width directions of the polarizer 7, so that the laser cutting machine 6 cuts the polarizer 7 into multiple small rectangular surfaces.

[0045] The support seat 2 is made of a material with a low laser absorption rate, such as white polytetrafluoroethylene PTFE, ceramics, glass, etc. These materials have a high reflectivity to lasers, which can reduce the laser energy transferred to the support seat 2, and can effectively protect the support seat 2 from damage. In addition, together with the blowing group 59 and the coolant 41 in the support seat 2, it greatly reduces the damage to the support seat 2 caused by the conduction of laser heat to the support seat 2, and at the same time avoids slight deformation of the polarizer 7 due to external force or temperature changes during the fixing process, thereby affecting the cutting accuracy, thereby ensuring that the support seat 2 provides a smooth support for the polarizer 7.

[0046] See also Figure 1 , Figure 3 , Figure 4 and Figure 7 The flattening end pulling mechanism 3 includes a connecting seat 30 installed on both sides of the supporting seat 2 arranged along its length direction, a guiding inclined seat 31 is installed on the side of the connecting seat 30 away from the supporting seat 2, a pulling plate 32 is slidably connected to the connecting seat 30, and an I-shaped frame 33 is slidably connected to the top of the pulling plate 32. The two ends of the I-shaped frame 33 above the supporting seat 2 are jointly installed with supporting rollers 34, and the lower end surfaces of the other two ends of the I-shaped frame 33 are installed with abutting rods 35 that abut against the top of the guiding inclined seat 31, and the lower end surfaces of the abutting rods 35 are The end rollers are connected with balls, and both ends of the support roller 34 are equipped with adsorption members 36 that slide along the axial direction thereof, and a return spring 37 is installed between the adsorption member 36 and the support roller 34. Guide components 38 for extruding and guiding the adsorption member 36 are installed at the four right angles of the support seat 2. An end pulling driving group 39 for driving the pulling plate 32 to move horizontally during its movement is installed on the gantry 50, and an adsorption source (not shown in the figure) for driving the adsorption member 36 to adsorb the polarizer 7 is installed on the two I-shaped frames 33.

[0047] In the initial state, the adsorption member 36 cooperates with the guide assembly 38 so that the reset spring 37 is in a contracted state, and the pull plate 32 is close to the supporting seat 2. The I-shaped frame 33 drives the support roller 34 to move upward under the pressure cooperation of the support rod 35 and the inclined surface of the guide inclined seat 31 close to the connecting seat 30. The support roller 34 drives the adsorption member 36 to move upward synchronously, and the distance between the support roller 34 and the supporting seat 2 is increased, so that the end of the polarizer 7 can be placed between the support roller 34 and the supporting seat 2.

[0048] After the polarizer 7 is placed, the adsorption source (the connecting tube connected to and communicated with the adsorption member 36, the connecting tube passes through the I-shaped frame 33 and is connected to the external air pump) is started to make the adsorption member 36 adsorb the four corners of the polarizer 7, and then the gantry 50 drives the sealing cover 54 to move above the polarizer 7. At this time, the gantry 50 also drives the pull plate 32 to move away from the supporting seat 2 through the end pull drive group 39, and the pull plate 32 drives the I-shaped frame 33 and the support roller 34 to move, and the push rod 35 moves downward along the inclined surface of the guide inclined seat 31 through the ball bearing, The I-shaped frame 33 drives the support roller 34 to move toward the side of the supporting seat 2 and move downward at the same time, and the adsorption member 36 straightens and unfolds the polarizer 7 in the length direction. At the same time, the end of the adsorption member 36 is no longer suppressed by the guide assembly 38 and moves away from the support roller 34 under the action of the reset spring 37, and pulls the polarizer 7 to be straightened and unfolded in the width direction, thereby preventing the polarizer 7 placed on the supporting seat 2 from bending and warping, thereby affecting the accuracy of subsequent cutting dimensions. At the same time, it is also convenient to improve the accuracy of the absorption and bending mechanism 4 when adsorbing and fixing the polarizer 7.

[0049] See also Figure 1 , Figure 3 , Figure 4 and Figure 7 The end-pull drive group 39 includes a spring groove 390 opened on the top of the connecting seat 30 and slidably connected to the pull plate 32. The spring groove 390 and the pull plate 32 are connected by a push spring 391. The connecting seat 30 is provided with a through hole that runs through both ends of its length direction and is connected to the spring groove 390. The gantry 50 is equipped with plug rods 392 that are symmetrically arranged along its length direction and slidably connected to the through holes one by one. The end of the plug rod 392 is rollingly connected to the side close to the pull plate 32, and a wedge block 393 that cooperates with the ball on the plug rod 392 is installed in the middle of the pull plate 32.

[0050] When the cam 38 is in the closed position, the spring 391 is pressed against the pull plate 32 and the spring 392 is pressed against the pull plate 32, and the pull plate 32 is pressed against the pull plate 32 and the spring 391 is pressed against the pull plate 32. When the cam 38 is in the closed position, the spring 391 is pressed against the pull plate 32 and the pull plate 32 is pressed against the pull plate 32. When the cam 38 is in the closed position, the spring 391 is pressed against the pull plate 32 and the pull plate 32 is pressed against the pull plate 32.

[0051] See also Figure 3 and Figure 4 The adsorbent 36 comprises a hollow roller slidably plugged into the end of the supporting roller 34 , and the lower end of the annular wall of the hollow roller is provided with suction holes 361 which are evenly arranged and communicated with the inner cavity thereof.

[0052] See also Figure 1 , Figure 3 and Figure 4 The guide assembly 38 includes an inclined guide plate 380 fixedly connected to the upper end of the supporting seat 2 through a connecting strip 381, and a ball is rollingly connected to the end of the adsorption member 36. After the adsorption member 36 adsorbs and fixes the polarizer 7 through the suction hole 361, the I-shaped frame 33 drives the support roller 34 to move obliquely downward and simultaneously drives the adsorption member 36 to move downward. The ball on the adsorption member 36 moves along the inclined guide plate 380. When the ball is separated from the inclined guide plate 380, the adsorption member 36 is no longer squeezed, and the rebound force of the reset spring 37 pushes the adsorption member 36 to pull the polarizer 7 to be straightened outward in the width direction and unfolded, so as to avoid the polarizer 7 placed on the supporting seat 2 from bending and warping, thereby affecting the accuracy of the subsequent cutting size.

[0053] See also Figure 1 and Figure 2 The supporting group 53 includes inclined plates 530 installed on both sides of the sliding block 51 arranged along the width direction thereof, and a supporting frame 531 connected to the sealing cover 54 for sliding up and down is fixedly installed at the lower end of the inclined plate 530.

[0054] See also Figure 1 , Figure 2 , Figure 5 and Figure 6 The lifting drive group 58 includes a rectangular through slot 580 that runs through the support frame 531 from top to bottom. The lower end of the support frame 531 is rotatably connected to a rotating shaft through an ear plate arranged and fixedly installed along its width direction. A tilting plate 581 is fixedly sleeved on the rotating shaft. The lower end of the tilting plate 581 is located above the expansion frame 56. The upper end of the tilting plate 581 passes through the rectangular through slot 580. A two-way cylinder 582 is installed on the top of the top cover 52. Both telescopic ends of the two-way cylinder 582 are installed with pulling frames 583. The two pulling frames 583 are respectively slidably sleeved on the two tilting plates 581, and the pulling frames 583 are located above the support frame 531. The tilting plate 581 and the pulling frame 583 are slidably connected by the cooperation of the pin and the sliding groove, wherein the pin is installed on the inner wall of the pulling frame 583, the sliding groove is opened at the side end of the tilting plate 581, the pin is slidably connected to the sliding groove (not shown in the figure), and the rotating axis is located at the lower center of the tilting plate 581.

[0055] After the sliding block 51 drives the sealing cover 54 to move to the corresponding cutting position, the bidirectional cylinder 582 drives the pulling frame 583 to drive the tilting plate 581 to rotate along the rotating axis, and the lower end of the tilting plate 581 presses the expansion frame 56 to drive the sealing cover 54 to move downward until the expansion frame 56 and the protective gasket 57 and the polarizer 7 at the bottom of the sealing cover 54 are pressed tightly. The sealing cover 54 and the expansion frame 56 are pressed tightly by the rotating pressure of the tilting plate 581, which greatly improves the pressing effect between the protective gasket 57 and the polarizer 7, which not only improves the fixing effect of the polarizer 7, but also facilitates the subsequent cooling and dust removal of the cut polarizer 7 by the blowing group 59.

[0056] See also Figure 1 , Figure 2 and Figure 6 The blowing group 59 includes an air blowing pipe 590 installed on the side wall of the sealing cover 54 and connected thereto. A pipe rack 591 is embedded on the inner wall of the sealing cover 54 near the lower end. The pipe rack 591 is equipped with evenly arranged dust removal suction heads 592. The pipe rack 591 is equipped with a suction pipe 593 connected thereto and passing through the sealing cover 54. The side wall of the sealing cover 54 is also provided with an air outlet (not shown in the figure).

[0057] When the polarizer 7 is laser cut, an external air pump blows air into the sealing cover 54 through the blowing pipe 590 to blow away the melt and residue generated during the cutting process to prevent them from being deposited on the cutting edge and adhering to the supporting seat 2. In addition, the gas can also play a cooling role to reduce the heat transferred to the supporting seat 2, and cooperate with the coolant 41 in the supporting seat 2 to promptly take away the heat generated during cutting to prevent the polarizer 7 from overheating and deformation.

[0058] After the cutting is completed, the suction pipe 593 connected to the external dust suction device cleans the melt and residue produced during the cutting through the pipe rack 591 and the dust removal suction head 592 to prevent them from remaining on the supporting seat 2 and affecting the fixing and cutting of the next polarizer 7.

[0059] See also Figure 1-Figure 8 When working, after the polarizer 7 is placed on the top of the support seat 2, the gantry 50 is driven by an external driving source (such as a cylinder or an electric slider) to drive the sealing cover 54 to move to the top of the support seat 2. During this process, the flattening end pulling mechanism 3 straightens and flattens the polarizer 7. After the polarizer 7 is straightened and flattened, the adsorption connection group 40 cooperates with the external air pump so that the adsorption holes uniformly adsorb and fix the lower end surface of the polarizer 7. At this time, the flattening end pulling mechanism 3 no longer straightens the polarizer 7.

[0060] Afterwards, the lifting drive group 58 drives the sealing cover 54 to move downward until the sealing cover 54 and the protective gasket 57 on the lower end surface of the expansion frame 56 are pressed against the polarizer 7, which not only realizes the pressing and fixing of the top of the polarizer 7, but also realizes the partial sealing of the polarizer 7, further preventing the polarizer 7 from deformation. At the same time, when the laser cutting machine 6 performs partial rectangular cutting on the polarizer 7, the blowing group 59 blows air into the cutting area to help blow away the melt and residue generated during the cutting process to prevent them from being deposited on the cutting edge and adhering to the support seat 2. In addition, the gas can also play a cooling role to reduce the heat transferred to the support seat 2; after the cutting is completed, the blowing group 59 can also absorb the smoke, melt and residue generated during the cutting, keep the working environment clean, reduce the risk of contamination or damage to the support seat 2, and thus help to improve the accuracy of the subsequent placement of the polarizer 7 during cutting.

[0061] In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0062] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made according to the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixture for a polarizer laser cutting machine, characterized in that: include: A fixed platform (1), a support seat (2) is installed on the top of the fixed platform (1) via supporting legs, the support seat (2) is a rectangular cavity structure, and a flattening end pulling mechanism (3) is installed on both sides of the support seat (2) arranged along its length direction; The flattening end-pull mechanism (3) is used to straighten and flatten the polarizer (7) placed on the supporting seat (2) in the width direction and the length direction; The support seat (2) is provided with a solid absorption and bending reduction mechanism (4), the solid absorption and bending reduction mechanism (4) comprises a plurality of groups of absorption holes opened on the top of the support seat (2) and connected to the inner cavity thereof, an absorption connection group (40) connected to the plurality of groups of absorption holes is installed on the fixed platform (1), and a cooling liquid (41) for cooling the top of the support seat (2) is stored in the support seat (2); The fixing platform (1) is provided with a pressing mechanism (5) for pressing the upper end surface of the polarizer (7), the pressing mechanism (5) comprising a gantry (50) installed on the top of the fixing platform (1) and sliding along the width direction thereof, the horizontal section of the gantry (50) being connected with a sliding block (51) sliding along the length direction thereof and being located above the supporting seat (2), the lower end of the sliding block (51) being provided with a top cover (52), and the sliding block (51) being provided with a supporting group (53) ) is provided with a sealing cover (54) located below the top cover (52) and connected to the top cover (52) in an up-and-down sliding manner, a retracting spring (55) is provided between the sealing cover (54) and the top cover (52), an expansion frame (56) is provided at the lower end of the sealing cover (54), a protective gasket (57) is provided at the lower end of the expansion frame (56) and the sealing cover (54), and a lifting driving group (58) for driving the sealing cover (54) to move up and down is provided on the supporting group (53); A laser cutting machine (6) is slidably mounted on the lower end of the top cover (52) via an electric slider, and an air blowing group (59) is mounted on the sealing cover (54), the air blowing group (59) being used to blow air to the cutting area when the laser cutting machine (6) cuts the polarizer (7); The flattening end pulling mechanism (3) comprises a connecting seat (30) installed on both sides of the supporting seat (2) arranged along the length direction thereof, a guiding inclined seat (31) is installed on the side of the connecting seat (30) away from the supporting seat (2), a pulling plate (32) is slidably connected to the connecting seat (30), an I-shaped frame (33) is slidably connected to the top of the pulling plate (32), support rollers (34) are installed at both ends of the I-shaped frame (33) located above the supporting seat (2), and the lower ends of the other two ends of the I-shaped frame (33) are The end faces are all provided with abutment rods (35) which abut against the top of the guide inclined seat (31); both ends of the support roller (34) are provided with adsorption members (36) which slide along the axial direction thereof; a return spring (37) is provided between the adsorption member (36) and the support roller (34); guide assemblies (38) for extruding and guiding the adsorption member (36) are provided at four right angles of the support seat (2); and an end pulling driving group (39) for driving the pulling plate (32) to move horizontally during its movement is provided on the gantry (50).

2. A fixture for polarizer laser cutting machine according to claim 1, characterized in that: The end-pull drive group (39) includes a spring groove (390) opened on the top of the connecting seat (30) and slidably connected to the pull plate (32); the spring groove (390) and the pull plate (32) are connected via a push spring (391); a through hole is opened on the connecting seat (30) and passes through both ends of the connecting seat in the length direction and is connected to the spring groove (390); a plug rod (392) is installed on the gantry (50) and is symmetrically arranged along the length direction and slidably connected to the through holes one by one; a ball is rollingly connected to the end of the plug rod (392) close to the side of the pull plate (32); a wedge block (393) that matches the ball on the plug rod (392) is installed in the middle of the pull plate (32).

3. The fixture for polarizer laser cutting machine according to claim 1, characterized in that: The lifting drive group (58) includes a rectangular through slot (580) which is opened on the supporting group (53) and passes through from top to bottom. The lower end of the supporting group (53) is rotatably connected to a rotating shaft through an ear plate arranged along its width direction and fixedly installed. A tilting plate (581) is fixedly sleeved on the rotating shaft. The lower end of the tilting plate (581) is located above the expansion frame (56). The upper end of the tilting plate (581) passes through the rectangular through slot (580). A two-way cylinder (582) is installed on the top of the top cover (52). Both telescopic ends of the two-way cylinder (582) are installed with a pulling frame (583). The two pulling frames (583) are respectively slidably sleeved on the two tilting plates (581), and the pulling frames (583) are located above the support frame (531).

4. The fixture for polarizer laser cutting machine according to claim 1, characterized in that: The blowing group (59) comprises an air blowing pipe (590) installed on the side wall of the sealing cover (54) and connected thereto; a pipe rack (591) is also embedded on the inner wall of the sealing cover (54) near the lower end; dust removal suction heads (592) arranged evenly are installed on the pipe rack (591); a suction pipe (593) is installed on the pipe rack (591) and connected thereto and passing through the sealing cover (54); and an air outlet is also provided on the side wall of the sealing cover (54).

5. The fixture for polarizer laser cutting machine according to claim 2, characterized in that: The adsorption member (36) comprises a hollow roller slidably plugged into the end of the support roller (34), and the lower end of the annular wall of the hollow roller is provided with suction holes (361) which are evenly arranged and communicated with the inner cavity thereof.

6. The fixture for polarizer laser cutting machine according to claim 2, characterized in that: The guide assembly (38) comprises an inclined guide plate (380) fixedly connected to the upper end of the support seat (2) via a connecting strip (381), and a ball is rollingly connected to the end of the adsorption member (36).

7. The fixture for polarizer laser cutting machine according to claim 1, characterized in that: The adsorption connection group (40) comprises a mounting groove (401) provided at the bottom of the fixed platform (1), a connecting pipe (402) arranged in a mesh is installed in the mounting groove (401), and a vertical pipe (403) corresponding to and connected with the adsorption holes is installed on the top of the connecting pipe (402).

8. The fixture for polarizer laser cutting machine according to claim 1, characterized in that: An arc-shaped rubber ring (430) is installed at the top edge of the adsorption hole.

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