Optical axis measuring instrument capable of calibrating optical sheet

Abstract

The invention relates to an optical axis measuring instrument capable of calibrating an optical sheet. The optical axis measuring instrument comprises a workbench, an installation shell is fixedly installed at the top of the workbench, a metal partition plate is fixedly installed on the upper middle portion of the inner wall of the installation shell, a ventilation opening is formed in the middle of the metal partition plate, and a current limiting mechanism used for blocking the ventilation opening is arranged at the top of the metal partition plate; the extension end of an electric push rod is controlled to extend to the longest, so that a first shifting rod slides in a sliding groove, a positioning plate and a rotating plate are driven to turn over, a sealing gasket blocks a ventilation opening, air flow in an installation shell is prevented from fluctuating, turbulent flow is prevented from being formed, light beams are prevented from shaking or scattering, and the accuracy of a calibration result is affected. And the extending end of the electric push rod is controlled to be reset to the shortest distance, at the moment, the sealing gasket is separated from the ventilation opening, the sealing plug blocks the air inlet, heat below the metal partition plate is transmitted to a plurality of heat conducting pieces along the ventilation opening and the two guide plates and then is extracted by the air extraction tool, and the effect of efficiently cooling the interior of the mounting shell is achieved.

Description

Technical Field

[0001] This invention relates to the field of polarizer processing equipment technology, specifically to an optical axis measuring instrument that can calibrate optical sheets. Background Technology

[0002] An optical axis measuring instrument is a precision instrument based on optical principles used for high-precision measurement of the geometric parameters of shaft parts. It is widely used in the automotive, aerospace, and machinery manufacturing industries. When calibrating a polarizer, the external environment has a significant impact on the accuracy and stability of the measurement results. Specifically, the ventilation equipment inside the optical axis measuring instrument generates airflow during operation, causing the beam to jitter or scatter, affecting the accuracy of the calibration results. At the same time, during the calibration process, the high-intensity light source inside the optical axis measuring instrument may generate a lot of heat during prolonged operation. Thermal expansion can cause wrinkles or deformation of the polarizer, thus affecting the calibration of the polarizer. Summary of the Invention

[0003] The technical problem solved by this solution is: (1) How to solve the problem that the ventilation equipment inside the optical axis measuring instrument will generate air flow during operation, causing the beam to jitter or scatter, which affects the accuracy of the calibration results; (2) How to solve the problem that the high-intensity light source inside the optical axis measuring instrument may generate a lot of heat during long-term operation, and the polarizer may wrinkle or deform due to thermal expansion, thus affecting the calibration of the polarizer.

[0004] The objective of this invention can be achieved through the following technical solution: an optical axis measuring instrument for calibrating optical sheets, comprising a worktable, a mounting shell fixedly installed on the top of the worktable, a metal partition fixedly installed on the upper part of the inner wall of the mounting shell, a vent opening in the middle of the metal partition, and a flow limiting mechanism for blocking the vent opening provided on the top of the metal partition. The flow limiting mechanism includes a first fixed plate and a second fixed plate fixedly connected to a metal partition. A horizontally arranged electric push rod is fixedly connected between the first fixed plate and the second fixed plate. A first lever and a second lever are fixedly connected to the extended end of the electric push rod, and a cooling unit for cooling the metal partition is provided on the front side of the electric push rod.

[0005] A further technical improvement of the present invention is that: two rotating seats are fixedly installed on the top of the metal partition between the vent and the first fixed plate, a rotating plate is rotatably arranged between the two rotating seats, and a sealing gasket is fixedly installed on the bottom of the rotating plate, the position of the sealing gasket corresponding to the position of the vent.

[0006] A further technical improvement of the present invention is that a positioning plate is fixedly installed on the top of the rotating plate, and a sliding groove is provided on the positioning plate. The sliding groove is arranged parallel to the rotating plate, and the inner wall of the sliding groove is slidably connected to the first lever.

[0007] A further technical improvement of the present invention is as follows: guide plates are fixedly installed on the metal partitions on both sides of the vent, and both guide plates are slidably connected to the rotating plate; by controlling the extended end of the electric push rod to extend to its maximum length, the first lever slides in the groove, causing the positioning plate and the rotating plate to flip, so that the sealing gasket blocks the vent, preventing airflow fluctuations in the mounting shell and avoiding the formation of turbulence, which could cause the beam to jitter or scatter, affecting the accuracy of the calibration results; after the calibration operation of the polarizer is completed, by controlling the extended end of the electric push rod to return to its shortest length, the sealing gasket separates from the vent, and due to the thrust of the thrust spring, the sealing plug blocks the air inlet, and the heat below the metal partition is transferred along the vent and the two guide plates to several heat-conducting plates, and then extracted by the input end of the vacuum tool, which effectively cools the inside of the mounting shell.

[0008] A further technical improvement of the present invention is that: the cooling unit includes a horizontally arranged square rod, one end of which is fixedly connected to a sealing plug, and an air inlet is provided on the top side of the mounting shell, the air inlet and the sealing plug are positioned corresponding to each other, and the size of the sealing plug is larger than the size of the air inlet.

[0009] A further technical improvement of the present invention is that: the end of the square rod away from the sealing plug movably passes through the first fixed plate and the second fixed plate, and is fixedly connected to the third lever; a baffle is fixedly installed in the middle of the square rod; a thrust spring is elastically arranged between the baffle and the first fixed plate; and the thrust spring is sleeved on the square rod.

[0010] A further technical improvement of the present invention is that: a fixed seat is fixedly installed on the top of the inner wall of the mounting shell, and a rotating rod is rotatably provided on the bottom of the fixed seat. The bottom of the rotating rod is slidably connected to the third lever, and the middle part of the rotating rod corresponds to the position of the second lever.

[0011] A further technical improvement of the present invention is that a heat-conducting seat is fixedly installed on the top of the metal partition on the side of the vent away from the electric push rod, and a plurality of heat-conducting plates are fixedly installed on the top of the heat-conducting seat.

[0012] A further technical improvement of the present invention is that a temperature sensor is fixedly embedded in the bottom of the metal partition plate. The temperature sensor is communicatively connected to the control platform of the optical axis measuring instrument to form an internal high temperature monitoring system of the optical axis measuring instrument. The temperature sensor is used to detect the temperature TY inside the mounting shell and send the temperature TY to the control platform. The control platform acquires the temperature TY and compares it with the threshold TE in the control platform's database for analysis. If the temperature TY is less than the threshold TE, it is determined to be in normal working condition and no signal is generated. If the temperature TY is greater than or equal to the threshold TE, it is determined to be a high temperature abnormality and a vacuuming action signal is generated, and the vacuuming equipment is immediately activated.

[0013] A further technical improvement of the present invention is that: an air extraction device is fixedly installed on the top of the mounting shell. The air extraction device is a prior art device. The input end of the air extraction device is fixedly inserted through the mounting shell and corresponds to the position of several heat-conducting plates.

[0014] A further technical improvement of the present invention is that: the interior of the mounting housing is provided with a laser cutting fixture for cutting polarizers, the bottom of the laser cutting fixture is fixedly connected to the top of the worktable, and a calibration fixture for calibrating polarizers is fixedly provided on the worktable in front of the laser cutting fixture. Both the calibration fixture and the laser cutting fixture are existing technologies.

[0015] Compared with the prior art, the beneficial effects of the present invention are: In use, this invention controls the extension of the electric push rod to its maximum length, causing the first lever to slide within the groove, which in turn rotates the positioning plate and the rotating plate. This causes the sealing gasket to block the vent, preventing airflow fluctuations within the mounting housing and avoiding turbulence that could cause beam jitter or scattering, thus affecting the accuracy of the calibration results. After the polarizer calibration is completed, the extension of the electric push rod is controlled to retract to its shortest position. At this point, the sealing gasket separates from the vent, and due to the thrust of the spring, the sealing plug blocks the air inlet. The heat from below the metal partition is then transferred along the vent and the two guide plates to several heat-conducting plates, and then extracted by the input end of the vacuum tool, effectively cooling the inside of the mounting housing.

[0016] In use, during the polarizer calibration process, when the temperature detected by the temperature sensor exceeds the threshold, the vacuum device is immediately activated, allowing external air to enter the space above the metal partition through the air inlet and then be extracted by the input end of the vacuum device. During this process, as the airflow passes through several heat-conducting plates, it dissipates the heat from the metal partition and heat-conducting base, thereby transferring heat from the air inside the mounting housing and reducing the temperature inside the mounting housing. This prevents temperature changes from affecting the polarizer calibration. Attached Figure Description

[0017] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a three-dimensional schematic diagram of the current limiting mechanism structure of the present invention. Figure 1 ; Figure 4 This is a three-dimensional schematic diagram of the current limiting mechanism structure of the present invention. Figure 2 ; Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 This is a three-dimensional schematic diagram of the heat-conducting base structure of the present invention; Figure 7 This is a three-dimensional schematic diagram of the internal structure of the mounting shell of the present invention.

[0019] In the diagram: 1. Tri-color light; 2. Monitor; 3. Workbench; 4. Mounting housing; 5. Air extraction fixture; 6. Flow limiting mechanism; 7. Air inlet; 8. Metal partition; 9. Heat-conducting base; 10. Temperature sensor; 11. Vent; 12. Heat-conducting sheet; 13. Calibration fixture; 14. Laser cutting fixture; 601. Fixed base; 602. Rotating rod; 603. Electric push rod; 604. Square rod; 605. Sealing plug; 606. Second fixed plate; 607. Baffle; 608. First fixed plate; 609. Guide plate; 610. Second lever; 611. Third lever; 612. Rotating base; 613. Slide groove; 614. First lever; 615. Rotating plate; 616. Positioning plate; 617. Sealing gasket. Detailed Implementation

[0020] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-7 As shown, an optical axis measuring instrument for calibrating optical sheets includes a worktable 3, a mounting shell 4 fixedly installed on the top of the worktable 3, a metal partition 8 fixedly installed on the upper part of the inner wall of the mounting shell 4, a vent 11 opened in the middle of the metal partition 8, and a flow limiting mechanism 6 for blocking the vent 11 is provided on the top of the metal partition 8.

[0022] Please see Figure 2 and Figure 3As shown, the flow limiting mechanism 6 includes a first fixing plate 608 and a second fixing plate 606 fixedly connected to the metal partition 8. A horizontally arranged electric push rod 603 is fixedly connected between the first fixing plate 608 and the second fixing plate 606. A first lever 614 and a second lever 610 are fixedly connected to the extended end of the electric push rod 603. A cooling unit for cooling the metal partition 8 is provided on the front side of the electric push rod 603.

[0023] Please see Figures 3-5 As shown, two rotating seats 612 are fixedly installed on the top of the metal partition 8 between the above-mentioned vent 11 and the first fixed plate 608. A rotating plate 615 is rotatably arranged between the two rotating seats 612. A sealing gasket 617 is fixedly installed on the bottom of the rotating plate 615. The position of the sealing gasket 617 corresponds to the position of the vent 11.

[0024] Please see Figure 4 and Figure 5 As shown, a positioning plate 616 is fixedly installed on the top of the rotating plate 615. A sliding groove 613 is provided on the positioning plate 616. The sliding groove 613 is arranged parallel to the rotating plate 615, and the inner wall of the sliding groove 613 is slidably connected to the first lever 614.

[0025] Please see Figure 3 As shown, guide plates 609 are fixedly installed on the metal partitions 8 on both the front and rear sides of the vent 11. Both guide plates 609 are slidably connected to the rotating plate 615. By controlling the extended end of the electric push rod 603 to extend to its maximum length, the first lever 614 slides in the groove 613, causing the positioning plate 616 and the rotating plate 615 to flip, so that the sealing gasket 617 blocks the vent 11, preventing airflow fluctuations in the mounting shell 4, avoiding the formation of turbulence, and preventing the beam from jittering or scattering. This affects the accuracy of the calibration results. After the calibration operation of the polarizer is completed, the extended end of the electric push rod 603 is controlled to retract to its shortest position. At this time, the sealing gasket 617 separates from the vent 11. Due to the thrust of the push spring, the sealing plug 605 blocks the air inlet 7. The heat under the metal partition 8 will be transferred along the vent 11 and the two guide plates 609 to several heat-conducting plates 12, and then extracted by the input end of the vacuum tool 5, which plays a role in efficiently cooling the inside of the mounting shell 4.

[0026] Please see Figure 3 and Figure 4 As shown, the cooling unit includes a horizontally arranged square rod 604, one end of which is fixedly connected to a sealing plug 605. An air inlet 7 is provided on the top side of the mounting housing 4. The air inlet 7 corresponds to the sealing plug 605, and the size of the sealing plug 605 is larger than the size of the air inlet 7.

[0027] Please see Figures 2-4As shown, the end of the square rod 604 away from the sealing plug 605 movably passes through the first fixing plate 608 and the second fixing plate 606, and is fixedly connected to the third lever 611. A baffle 607 is fixedly installed in the middle of the square rod 604. A thrust spring is elastically provided between the baffle 607 and the first fixing plate 608, and the thrust spring is sleeved on the square rod 604.

[0028] Please see Figure 3 and Figure 4 As shown, a fixed base 601 is fixedly installed on the top of the inner wall of the mounting shell 4. A rotating rod 602 is rotatably provided at the bottom of the fixed base 601. The bottom of the rotating rod 602 is slidably connected to the third lever 611, and the middle part of the rotating rod 602 corresponds to the position of the second lever 610.

[0029] Please see Figure 2 and Figure 6 As shown, a heat-conducting seat 9 is fixedly installed on the top of the metal partition 8 on the side of the vent 11 away from the electric push rod 603, and several heat-conducting plates 12 are fixedly installed on the top of the heat-conducting seat 9.

[0030] Please see Figure 2 As shown, a temperature sensor 10 is fixedly embedded in the bottom of the metal partition 8. The temperature sensor 10 is connected to the control platform of the optical axis measuring instrument to form an internal high temperature monitoring system of the optical axis measuring instrument. The temperature sensor 10 is used to detect the temperature TY inside the mounting shell 4 and send the temperature TY to the control platform. The control platform acquires the temperature TY and compares it with the threshold TE in the control platform's database for analysis. If the temperature TY is less than the threshold TE, it is determined to be in normal working condition and no signal is generated. If the temperature TY is greater than or equal to the threshold TE, it is determined to be a high temperature abnormal state and a pumping action signal is generated. It should be noted that the threshold TE is 25 degrees Celsius. This is obtained by simulating production conditions in the laboratory or factory using an optical axis measuring instrument, and by monitoring the temperature change inside the mounting housing 4 in real time using temperature sensor 10, and by counting whether the polarizer has undergone mechanical displacement. In practical applications, the determination of the threshold TE needs to be achieved through laboratory calibration, on-site verification, and collaborative analysis of multiple parameters. After the control platform generates the air extraction action signal, it immediately activates the air extraction fixture 5, allowing external air to enter the space above the metal partition 8 through the air inlet 7 and then be extracted by the input end of the air extraction fixture 5. During this process, as the airflow passes through several heat-conducting plates 12, it dissipates the heat from the metal partition 8 and the heat-conducting base 9, thereby transferring the heat from the air inside the mounting housing 4 and reducing the temperature inside the mounting housing 4 to prevent temperature changes from affecting the calibration of the polarizer.

[0031] Please see Figure 2 As shown, an air extraction device 5 is fixedly installed on the top of the mounting shell 4. The air extraction device 5 is existing technology. The input end of the air extraction device 5 is fixedly inserted through the mounting shell 4 and corresponds to the position of several heat-conducting plates 12.

[0032] Please see Figure 1 and Figure 2 As shown, a tri-color light 1 is fixedly installed on the mounting shell 4 on one side of the aforementioned vacuuming fixture 5, and a display 2 is fixedly installed on the front of the mounting shell 4. Several control buttons are provided on the mounting shell 4 on one side of the display 2.

[0033] Please see Figure 7 As shown, the mounting housing 4 is provided with a laser cutting fixture 14 for cutting polarizers. The bottom of the laser cutting fixture 14 is fixedly connected to the top of the worktable 3. A calibration fixture 13 for calibrating polarizers is fixedly provided on the worktable 3 in front of the laser cutting fixture 14. Both the calibration fixture 13 and the laser cutting fixture 14 are existing technologies.

[0034] Please see Figure 1 As shown, the top of the workbench 3 is also provided with a feed inlet.

[0035] Working Principle: In use, after the polarizer is placed into the feed inlet, it is positioned on the platform inside the worktable 3. The worktable 3 then uses a clamping structure to position the polarizer, which is then transferred to the calibration station below the calibration fixture 13 for calibration. At this time, by controlling the extended end of the electric push rod 603 to its maximum length, the first lever 614 slides within the groove 613, causing the positioning plate 616 and the rotating plate 615 to flip, thus... The sealing gasket 617 blocks the vent 11 to prevent airflow fluctuations within the mounting housing 4, avoiding turbulence that could cause beam jitter or scattering and affect the accuracy of calibration results. When the extended end of the electric push rod 603 reaches its maximum length, the second lever 610 pushes the rotating rod 602 to rotate, which in turn moves the square rod 604 with the third lever 611, causing the sealing plug 605 to separate from the air inlet 7. During the polarizer calibration process, when the temperature detected by the temperature sensor 10 exceeds the threshold, the suction device 5 is immediately activated, allowing external air to enter the space above the metal partition 8 along the air inlet 7 and then be extracted by the input end of the suction device 5. During this process, the airflow passes through several heat-conducting plates 12, dissipating heat from the metal partition 8 and the heat-conducting seat 9, thus transferring heat from the air inside the mounting housing 4 and reducing the temperature inside the mounting housing 4, preventing temperature changes from affecting the polarizer calibration. After completing the polarizer calibration operation, the electric push rod is controlled... When the extended end of 603 retracts to its shortest length, the stage transfers the polarizer to the cutting station. The polarizer is then cut by the laser cutting fixture 14. At this time, the sealing gasket 617 separates from the vent 11. Due to the thrust of the spring, the sealing plug 605 blocks the air inlet 7. The heat below the metal partition 8 is transferred along the vent 11 and the two guide plates 609 to several heat-conducting plates 12, and then extracted by the input end of the extraction fixture 5, which effectively cools the inside of the mounting housing 4.

[0036] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. An optical axis measuring instrument for calibrating optical sheets, comprising a worktable (3), wherein a mounting shell (4) is fixedly mounted on the top of the worktable (3), characterized in that: A metal partition (8) is fixedly installed on the upper part of the inner wall of the mounting shell (4). A vent (11) is opened in the middle of the metal partition (8), and a flow limiting mechanism (6) for blocking the vent (11) is provided on the top of the metal partition (8). The flow limiting mechanism (6) includes a first fixed plate (608) and a second fixed plate (606) fixedly connected to the metal partition (8). An electric push rod (603) is fixedly connected between the first fixed plate (608) and the second fixed plate (606). A first lever (614) and a second lever (610) are fixedly connected to the extended end of the electric push rod (603). A cooling unit for cooling the metal partition (8) is provided on the front side of the electric push rod (603).

2. The optical axis measuring instrument for calibrating optical sheets according to claim 1, characterized in that, Two rotating seats (612) are fixedly installed on the top of the metal partition (8) between the vent (11) and the first fixed plate (608). A rotating plate (615) is rotatably arranged between the two rotating seats (612). A sealing gasket (617) is fixedly installed on the bottom of the rotating plate (615). The position of the sealing gasket (617) corresponds to the position of the vent (11).

3. The optical axis measuring instrument for calibrating optical sheets according to claim 2, characterized in that, A positioning plate (616) is fixedly installed on the top of the rotating plate (615). A sliding groove (613) is provided on the positioning plate (616). The sliding groove (613) is parallel to the rotating plate (615), and the inner wall of the sliding groove (613) is slidably connected to the first lever (614). Guide plates (609) are fixedly installed on the metal partitions (8) on both sides of the vent (11), and both guide plates (609) are slidably connected to the rotating plate (615).

4. The optical axis measuring instrument for calibrating optical sheets according to claim 1, characterized in that, The cooling unit includes a square rod (604), one end of which is fixedly connected to a sealing plug (605). An air inlet (7) is provided on the top side of the mounting shell (4). The position of the air inlet (7) corresponds to that of the sealing plug (605), and the size of the sealing plug (605) is larger than that of the air inlet (7).

5. The optical axis measuring instrument for calibrating optical sheets according to claim 4, characterized in that, The end of the square rod (604) away from the sealing plug (605) movably passes through the first fixed plate (608) and the second fixed plate (606) and is fixedly connected to the third lever (611). A baffle (607) is fixedly installed in the middle of the square rod (604), and a thrust spring is elastically provided between the baffle (607) and the first fixed plate (608).

6. The optical axis measuring instrument for calibrating optical sheets according to claim 5, characterized in that, A fixed base (601) is fixedly installed on the top of the inner wall of the mounting shell (4). A rotating rod (602) is rotatably provided at the bottom of the fixed base (601). The bottom of the rotating rod (602) is slidably connected to the third lever (611), and the middle part of the rotating rod (602) corresponds to the position of the second lever (610).

7. The optical axis measuring instrument for calibrating optical sheets according to claim 6, characterized in that, A heat-conducting seat (9) is fixedly installed on the top of the metal partition (8) on the side of the vent (11) away from the electric push rod (603), and a number of heat-conducting plates (12) are fixedly installed on the top of the heat-conducting seat (9).

8. The optical axis measuring instrument for calibrating optical sheets according to claim 1, characterized in that, A temperature sensor (10) is fixedly embedded at the bottom of the metal partition (8). The temperature sensor (10) is connected to the control platform of the optical axis measuring instrument to form an internal high temperature monitoring system of the optical axis measuring instrument. The temperature sensor (10) is used to detect the temperature TY inside the mounting shell (4) and send the temperature TY to the control platform. The control platform acquires the temperature TY and compares it with the threshold TE in the control platform's database for analysis. If the temperature TY is less than the threshold TE, it is determined to be in normal working condition and no signal is generated. If the temperature TY is greater than or equal to the threshold TE, it is determined to be a high temperature abnormality and a pumping action signal is generated.

9. The optical axis measuring instrument for calibrating optical sheets according to claim 1, characterized in that, The top of the mounting shell (4) is fixedly equipped with an air extraction device (5), the input end of which is fixedly inserted through the mounting shell (4) and corresponds to the position of several heat-conducting plates (12).

10. The optical axis measuring instrument for calibrating optical sheets according to claim 1, characterized in that, The mounting housing (4) is provided with a laser cutting fixture (14) for cutting polarizers. The bottom of the laser cutting fixture (14) is fixedly connected to the top of the worktable (3), and a calibration fixture (13) for calibrating polarizers is fixedly provided on the worktable (3) in front of the laser cutting fixture (14).

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