Fixing structure for pressure test of LCD (Liquid Crystal Display) logic board

Abstract

The invention relates to the technical field of LCD logic board testing, and discloses a fixing structure for LCD logic board pressure testing, which comprises a base, a fifth oil storage cylinder is fixed on a supporting sleeve through an abutting column, the fifth oil storage cylinder is connected with a third oil storage cylinder through a third connecting pipeline, a fifth piston is slidably connected in the fifth oil storage cylinder, and a second piston is slidably connected in the fifth oil storage cylinder. A supporting frame is fixed to the inner end of the fifth piston. According to the fixing structure for the pressure test of the LCD logic board, after the LCD logic board is sucked up through an electric suction cup, a rotary table is rotated by 90 degrees firstly, two first oil storage cylinders are overturned by 180 degrees at the same time, then two first pistons move and stretch out at the same time, after the LCD logic board is clamped and supported through four supporting frames, a pressure test instrument can be used for carrying out the pressure test on the LCD logic board, and if the LCD logic board deforms, the LCD logic board is fixed through a fixing device; if not, the anti-pressure capability of the LCD logic board is not qualified, at the moment, the sixth piston moves upwards, the fourth piston moves downwards, the marking seal covers the LCD logic board, and the effect of automatic marking is conveniently achieved.

Description

Technical Field

[0001] The invention relates to the technical field of LCD logic board testing, and in particular to a fixing structure for pressure testing of an LCD logic board. Background Art

[0002] LCD is a liquid crystal display. The structure of LCD is to place a liquid crystal box between two parallel glass substrates. TFT (thin film transistor) is set on the lower substrate glass, and color filter is set on the upper substrate glass. The signal and voltage on TFT are changed to control the rotation direction of liquid crystal molecules, so as to control whether the polarized light of each pixel is emitted or not to achieve the display purpose. The logic board is the main component of LCD. The logic board is also called screen driver board, central control board, TCON board. The function of the logic board is to convert the LVDS image data input signal (the input signal includes RGB data signal, clock signal, and control signal) sent by the digital board into an LVDS signal that can drive the LCD screen after being processed by the logic board, and then directly sent to the LVDS receiving chip of the LCD screen. By processing the shift register storage, the image data signal and the clock signal are converted into a control signal that the screen can recognize. The row and column signal RSDS controls the operation of the MOSFET tube in the screen to control the distortion of the liquid crystal molecules. Drive the LCD screen to display images. The logic board is a component with software and inherent programs. It has a dedicated module FLASH with built-in shift registers (horizontal and vertical shift) that cannot be changed even by the manufacturer. The logic board needs to be stress tested before leaving the factory. During the test, the logic board is usually fixed by a fixing mechanism.

[0003] The existing fixed structure can generally only realize the function of limiting and fixing, and the function is relatively simple. After completing the pressure test, if the pressure test of the LCD logic board fails, it is impossible to directly distinguish and mark the unqualified products, and manual loading and unloading are generally required. The entire pressure test is inefficient, labor-intensive, and prone to errors. In view of the above problems, it is necessary to improve the existing equipment. Therefore, the present invention proposes a fixed structure for LCD logic board pressure testing. Summary of the invention

[0004] In order to solve the problems mentioned in the above background, the present invention provides a fixing structure for pressure testing of an LCD logic board.

[0005] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0006] A fixing structure for pressure testing of an LCD logic board comprises a base, a first bracket is fixed to one side of the upper end surface of the base, a motor is fixed inside the top of the first bracket, and the top of the motor is connected to an automatic loading and unloading mechanism.

[0007] A second bracket is fixed to the other side of the upper end surface of the base, and a supporting, fixing and marking mechanism is fixed to one side of the second bracket, and the supporting, fixing and marking mechanism includes a third oil storage cylinder, a third piston is slidably connected in the third oil storage cylinder, a mounting plate is fixed to the bottom of the third piston, a mounting hole is opened at the bottom of the mounting plate, four fixing frames are fixed to the side of the mounting plate, and a supporting sleeve is fixed to the bottom of the four fixing frames, a fifth oil storage cylinder passes through the support sleeve, the fifth oil storage cylinder is fixed to the support sleeve through a support column, the fifth oil storage cylinder is connected to the third oil storage cylinder through a third connecting pipe, a fifth piston is slidably connected in the fifth oil storage cylinder, and a support frame is fixed to the inner end of the fifth piston.

[0008] Working principle: After loosening the support column, the fifth oil storage cylinder can be moved, which is convenient for adjusting the initial position of each support frame according to the size of the material. After completing the position adjustment operation, tighten the support column to fix the fifth oil storage cylinder. Use the mounting holes and external bolts to install the pressure tester on the mounting plate. A conveyor belt is set under the left electric suction cup. First, manually place the first material on the left electric suction cup. After the electric suction cup sucks the material, the turntable rotates 90 degrees, and then the electric telescopic rod extends, and the moving plate moves to drive the second circular gear to rotate. The shaft rotates under the driving action of the first bevel gear and the second bevel gear, thereby driving the two first circular gears. The wheel rotates, the two gear rings rotate, the two first connecting pipes flip 180 degrees, the two first oil storage cylinders flip 180 degrees, and when the rack leaves the second circular gear, the push block slides to the bottom in the sleeve, and the locking rod is inserted between the two limit blocks to lock the second circular gear. Then the turntable continues to rotate 90 degrees, the electric telescopic rod continues to extend, the moving plate and the push block continue to move, thereby pushing the sleeve and the second oil storage cylinder to move. Hydraulic oil is stored in the second oil storage cylinder. The two first pistons move and extend under the action of the oil pressure, and the support seat and the electric suction cup move as a whole, so as to support the material to be tested between the four support frames, and the electric telescopic column extends. The third piston moves downward, hydraulic oil is stored in the third oil storage cylinder, the four fifth pistons move, the four support frames approach each other and move the same distance to limit the material, and then use the pressure tester to perform pressure test on the material. If the material is deformed, the middle part of the material is concave, and the edge of the material is tilted, the sixth piston moves upward under pressure, and hydraulic oil is stored in the oil storage tank. The fourth piston moves downward, the marking stamp moves downward and covers the material with the mark, so as to achieve the effect of automatic marking. The first compression spring supports the electric suction cup. After the four support frames are removed, the electric telescopic rod shrinks, and the moving plate moves a distance first. The push block pulls the sleeve to move, the first piston, the support seat and the electric suction cup move back, then the turntable rotates 90 degrees, and the two first oil storage cylinders are flipped synchronously before continuing to rotate the turntable 90 degrees. In the subsequent repeated operations, after each material test is completed, the two electric suction cups need to complete two back and forth lifts at the same time, because the previous material can be put back on the conveyor belt while the next material is lifted for testing. After the two electric suction cups move back, the conveyor belt runs and transports the material to the bottom of the electric suction cup, and the electric suction cup above the conveyor belt needs to be lifted back and forth again to suck up the material, which is convenient for automatic loading and unloading.

[0009] Preferably, the automatic loading and unloading mechanism includes a turntable, and the turntable is connected to the top of the motor, the two sides of the turntable are symmetrically rotatably connected with a first connecting pipe, and a gear ring is fixed to the outside of the first connecting pipe, the outer end of the first connecting pipe is fixed with a first oil storage cylinder, and a first piston is slidably connected in the first oil storage cylinder, the outer end of the first piston is fixed with a support seat, and the outer side of the support seat is connected to the electric suction cup through a first compression spring.

[0010] By adopting the above technical solution, the two first pistons can move simultaneously, one of the first pistons moves up while the other moves down, so that one of the electric suction cups moves up while the other moves down.

[0011] Preferably, a cover frame is fixed to the upper end surface of the turntable, and a rotating shaft is rotatably connected to the cover frame, a first bevel gear is fixed to the outer side of the rotating shaft, and first circular gears are symmetrically fixed to both ends of the rotating shaft, and the first circular gear is meshingly connected to the ring gear.

[0012] By adopting the above technical solution, the rotation of the rotating shaft can drive the two first circular gears to rotate, thereby driving the two ring gears to rotate.

[0013] Preferably, the top of the cover frame is rotatably connected to a second circular gear, and a second bevel gear is fixed to the bottom of the second circular gear, the second bevel gear is meshingly connected to the top of the first bevel gear, and limiting blocks are symmetrically fixed on both sides of the upper end surface of the second circular gear.

[0014] By adopting the above technical solution, when the second circular gear rotates, the rotating shaft can rotate under the driving action of the first bevel gear and the second bevel gear.

[0015] Preferably, an electric telescopic rod is fixed to one side of the upper end surface of the turntable, and a movable plate is fixed to one end of the electric telescopic rod, a locking rod is fixed to the upper end surface of the movable plate, a rack is fixed to one end surface of the movable plate, and the rack is meshingly connected to the second circular gear.

[0016] By adopting the above technical solution, the movable plate can move left and right under the telescopic action of the electric telescopic rod, thereby driving the second circular gear to rotate.

[0017] Preferably, a push block is fixed on one side of the movable plate, and one side of the push block is connected to the sleeve through a second compression spring, the push block is slidably connected to the inner side of the sleeve, and a second piston is fixed to one side of the sleeve, a second oil storage cylinder is fixed on the other side of the upper end surface of the turntable, the second piston is slidably connected in the second oil storage cylinder, an oil passage is opened in the turntable, the second oil storage cylinder is connected to the oil passage through a second connecting pipe, and an end of the oil passage is connected to the first connecting pipe.

[0018] By adopting the above technical solution, when the electric telescopic rod is extended, the push block moves together with the moving plate. After the push block moves to the bottom in the sleeve, the push block continues to move and pushes the sleeve to move.

[0019] Preferably, an electric telescopic column is fixed to the top of the third oil storage cylinder, and the electric telescopic column passes through the top of the third oil storage cylinder and is connected to the third piston.

[0020] By adopting the above technical solution, the third piston can move up and down under the telescopic action of the electric telescopic column, thereby driving the four fifth pistons to move.

[0021] Preferably, a fourth oil storage cylinder is fixed to the bottom of the mounting plate, and a fourth piston is slidably connected in the fourth oil storage cylinder, a marking seal is rotatably connected to the bottom of the fourth piston, and the marking seal is connected to the fourth piston via a volute spring.

[0022] By adopting the above technical solution, when the pressure resistance of the LCD logic board is unqualified, the edge of the LCD logic board is lifted up, and the marking stamp is automatically stamped on the LCD logic board, thereby facilitating the automatic marking effect.

[0023] Preferably, an oil storage tank is opened on the inner top of one of the support frames, and a third compression spring is fixed in the oil storage tank, a sixth piston is fixed to the bottom of the third compression spring, and the sixth piston is slidably connected in the oil storage tank, and the fourth oil storage cylinder is connected to the oil storage tank through a fourth connecting pipe.

[0024] By adopting the above technical solution, when the pressure resistance of the LCD logic board is unqualified, the edge of the LCD logic board is lifted, the sixth piston moves upward under pressure, and the fourth piston and the marking stamp move downward, which facilitates automatic marking.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. The fixed structure for pressure testing of LCD logic board can achieve the purpose of automatically marking unqualified products through the coordinated use of the turntable, the first oil storage cylinder, the first piston, the electric suction cup, the mounting plate, the fourth piston, the marking stamp, the support frame and the sixth piston. The pressure tester can be installed on the mounting plate, and the turntable can rotate, which is convenient for using two electric suction cups in turn. After the LCD logic board is sucked up by the electric suction cup, the turntable is first rotated 90 degrees, and the two first oil storage cylinders are simultaneously turned 180 degrees, and then the two first pistons are simultaneously moved and extended. After the LCD logic board is clamped and supported by four support frames, the pressure tester can be used to perform pressure testing on the LCD logic board. If the LCD logic board is deformed, it means that the pressure resistance of the LCD logic board is unqualified. At this time, the sixth piston moves up, the fourth piston moves down, and the marking stamp is stamped on the LCD logic board, which is convenient for achieving the effect of automatic marking.

[0026] 2. The fixed structure for pressure testing of the LCD logic board can achieve the purpose of automatic loading and unloading by using the electric suction cup. A conveyor belt is arranged under the left electric suction cup to convey the LCD logic board. While one of the electric suction cups is used to suck the LCD logic board and lift the LCD logic board for pressure testing, the other electric suction cup can lower the tested LCD logic board back to the conveyor belt. After the conveyor belt conveys the next LCD logic board to the bottom of the electric suction cup, the two electric suction cups are lifted and lowered back and forth again, and the electric suction cup above the conveyor belt can suck up the LCD logic board, making the entire test operation more continuous and efficient.

[0027] 3. The fixed structure for pressure testing of LCD logic board can achieve the purpose of being suitable for LCD logic boards of different sizes through the coordinated use of the fifth oil storage cylinder, the support column and the support frame. Before using the device, the positions of the four fifth oil storage cylinders can be manually adjusted to facilitate the adjustment of the original positions of the four support frames according to the size of the LCD logic board. Then, the fifth oil storage cylinder can be fixed tightly with the support column. After the LCD logic board is raised between the four support frames, the four support frames are close to each other and moved the same distance, which is convenient for clamping and supporting the LCD logic board. The device is suitable for fixing LCD logic boards of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the front three-dimensional structure of the present invention; Figure 2 It is a bottom-up three-dimensional structural schematic diagram of the present invention; Figure 3 It is a front cross-sectional structural schematic diagram of the present invention; Figure 4 It is a structural schematic diagram of the automatic loading and unloading mechanism of the present invention; Figure 5 It is a schematic diagram of the connection structure of the first connecting pipe, the gear ring, the first oil storage cylinder, the support seat and the electric suction cup of the present invention; Figure 6 It is a structural schematic diagram of the supporting, fixing and marking mechanism of the present invention; Figure 7 It is a schematic diagram of the connection structure between the marking seal and the scroll spring of the present invention.

[0029] The reference numerals in the accompanying drawings are: 1. Base; 2. First bracket; 3. Motor; 4. Automatic loading and unloading mechanism; 401. Turntable; 402. First connecting pipe; 403. Gear ring; 404. First oil storage cylinder; 405. First piston; 406. Support seat; 407. First compression spring; 408. Electric suction cup; 409. Cover frame; 410. Rotating shaft; 411. First bevel gear; 412. First circular gear; 413. Second bevel gear; 414. Second circular gear; 415. Limit block; 416. Electric telescopic rod; 417. Moving plate; 418. Lock rod; 419. Rack; 420. Push block; 421. Sleeve; 422. Second compression spring; 423. Second piston; 4 24. Second oil storage cylinder; 425. Second connecting pipe; 426. Oil passage; 5. Second bracket; 6. Support, fixation and marking mechanism; 601. Third oil storage cylinder; 602. Electric telescopic column; 603. Third piston; 604. Mounting plate; 605. Mounting hole; 606. Fourth oil storage cylinder; 607. Fourth piston; 608. Marking stamp; 609. Volute spring; 610. Fixing frame; 611. Support sleeve; 612. Fifth oil storage cylinder; 613. Column; 614. Third connecting pipe; 615. Fifth piston; 616. Support frame; 617. Oil storage tank; 618. Third compression spring; 619. Sixth piston; 620. Fourth connecting pipe. DETAILED DESCRIPTION

[0030] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0031] Reference Figure 1-Figure 7 A fixing structure for pressure testing of an LCD logic board includes a base 1, a first bracket 2 is fixed to one side of the upper end surface of the base 1, a motor 3 is fixed inside the top of the first bracket 2, and the top of the motor 3 is connected to an automatic loading and unloading mechanism 4.

[0032] A second bracket 5 is fixed to the other side of the upper end surface of the base 1, and a supporting, fixing and marking mechanism 6 is fixed to one side of the second bracket 5. The supporting, fixing and marking mechanism 6 includes a third oil storage cylinder 601, in which a third piston 603 is slidably connected, a mounting plate 604 is fixed to the bottom of the third piston 603, a mounting hole 605 is provided at the bottom of the mounting plate 604, four fixing frames 610 are fixed to the side of the mounting plate 604, and a supporting sleeve 611 is fixed to the bottom of the four fixing frames 610, a fifth oil storage cylinder 612 passes through the support sleeve 611, the fifth oil storage cylinder 612 is fixed to the support sleeve 611 through a support column 613, the fifth oil storage cylinder 612 is connected to the third oil storage cylinder 601 through a third connecting pipe 614, a fifth piston 615 is slidably connected to the fifth oil storage cylinder 612, and a supporting frame 616 is fixed to the inner end of the fifth piston 615.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the automatic loading and unloading mechanism 4 includes a turntable 401, and the turntable 401 is connected to the top of the motor 3, the two sides of the turntable 401 are symmetrically connected with the first connecting pipe 402, and the outer side of the first connecting pipe 402 is fixed with a gear ring 403, the outer end of the first connecting pipe 402 is fixed with a first oil storage cylinder 404, and the first piston 405 is slidably connected in the first oil storage cylinder 404, the outer end of the first piston 405 is fixed with a support seat 406, and the outer side of the support seat 406 is connected to the electric suction cup 408 through a first compression spring 407, the turntable 401 can rotate under the action of the motor 3, so as to facilitate the switching between the two electric suction cups 408, and the rotation of the gear ring 403 can drive the first connecting pipe 402 and the first oil storage cylinder 404 to flip, so as to facilitate the direction of the electric suction cup 408.

[0034] In this embodiment, Figure 1 , Figure 3 and Figure 4 As shown, a cover frame 409 is fixed to the upper end surface of the turntable 401, and a rotating shaft 410 is rotatably connected to the cover frame 409, a first bevel gear 411 is fixed to the outer side of the rotating shaft 410, and first circular gears 412 are symmetrically fixed to both ends of the rotating shaft 410, and the first circular gears 412 are meshingly connected to the ring gear 403, and the rotation of the first bevel gear 411 can drive the rotating shaft 410 to rotate, thereby driving the two first circular gears 412 to rotate, and the rotation of the first circular gear 412 can drive the ring gear 403 to rotate.

[0035] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the top of the cover frame 409 is rotatably connected to the second circular gear 414, and the bottom of the second circular gear 414 is fixed with a second bevel gear 413, the second bevel gear 413 is meshingly connected to the top of the first bevel gear 411, and the limiting blocks 415 are symmetrically fixed on both sides of the upper end surface of the second circular gear 414. The rotation of the second circular gear 414 can drive the second bevel gear 413 to rotate, thereby driving the first bevel gear 411 to rotate.

[0036] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an electric telescopic rod 416 is fixed to one side of the upper end surface of the turntable 401, and a moving plate 417 is fixed to one end of the electric telescopic rod 416, a locking rod 418 is fixed to the upper end surface of the moving plate 417, and a rack 419 is fixed to one end surface of the moving plate 417, and the rack 419 is meshed and connected to the second circular gear 414. The moving plate 417 can move left and right under the telescopic effect of the electric telescopic rod 416. When the rack 419 is meshed and connected with the second circular gear 414, due to The rack 419 is meshed and connected with the second circular gear 414, and the second circular gear 414 rotates with the movement of the movable plate 417. The limit block 415 is initially in a longitudinal state. When the movable plate 417 moves under the extension of the electric telescopic rod 416, the second circular gear 414 rotates, and the limit block 415 is converted to a transverse state. When the rack 419 is disengaged from the second circular gear 414, the locking rod 418 is inserted between the two limit blocks 415 to facilitate locking the second circular gear 414.

[0037] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, a push block 420 is fixed to one side of the movable plate 417, and one side of the push block 420 is connected to the sleeve 421 through a second compression spring 422, the push block 420 is slidably connected to the inner side of the sleeve 421, and a second piston 423 is fixed to one side of the sleeve 421, a second oil storage cylinder 424 is fixed to the other side of the upper end surface of the turntable 401, the second piston 423 is slidably connected in the second oil storage cylinder 424, an oil passage 426 is opened in the turntable 401, the second oil storage cylinder 424 is connected to the oil passage 426 through a second connecting pipe 425, and the end of the oil passage 426 is connected to the first connecting pipe 402, the second compression spring 422 is in a compressed state at the beginning, and the electric telescopic When the rod 416 is extended, the push block 420 moves with the movable plate 417. When the push block 420 slides to the bottom in the sleeve 421, the second compression spring 422 is reset. When the push block 420 continues to move, it will push the sleeve 421 and the second piston 423 to move. The second piston 423 slides in the second oil storage cylinder 424. The second oil storage cylinder 424 stores hydraulic oil, which is convenient for pressing oil into the oil passage 426, the first connecting pipe 402 and the first oil storage cylinder 404. When the electric telescopic rod 416 is contracted, due to the relatively large supporting force of the second compression spring 422, the push block 420 and the movable plate 417 move to drive the sleeve 421 and the second piston 423 to move, which is convenient for pumping oil into the second oil storage cylinder 424.

[0038] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, an electric telescopic column 602 is fixed to the top of the third oil storage cylinder 601, and the electric telescopic column 602 passes through the top of the third oil storage cylinder 601 and is connected to the third piston 603. The third piston 603 can move up and down under the telescopic action of the electric telescopic column 602, so as to conveniently press out the hydraulic oil in the third oil storage cylinder 601 or pump oil into the third oil storage cylinder 601.

[0039] In this embodiment, Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7As shown, a fourth oil storage cylinder 606 is fixed to the bottom of the mounting plate 604, and a fourth piston 607 is slidably connected in the fourth oil storage cylinder 606, a marking stamp 608 is rotatably connected to the bottom of the fourth piston 607, and the marking stamp 608 is connected to the fourth piston 607 through a volute spring 609. Before the pressure test of the LCD logic board is performed, four support frames 616 are required to support the LCD logic board. During the pressure test, if the LCD logic board is deformed, the fourth piston 607 moves downward under the action of oil pressure, and the marking stamp 608 moves downward accordingly and covers the LCD logic board, which facilitates the role of automatic marking. The marking stamp 608 and the fourth piston 607 are rotatably connected, so that the stamping effect is more fitting.

[0040] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, an oil storage tank 617 is opened at the inner top of one of the supporting frames 616, and a third compression spring 618 is fixed in the oil storage tank 617, a sixth piston 619 is fixed at the bottom of the third compression spring 618, and the sixth piston 619 is slidably connected in the oil storage tank 617, and the fourth oil storage cylinder 606 is connected with the oil storage tank 617 through the fourth connecting pipe 620, and the fourth connecting pipe 620 serves to connect the oil storage tank 617 and the fourth oil storage cylinder 606. After the LCD logic board is supported by four supporting frames 616, the LCD logic board can be pressure tested. If the LCD logic board is deformed, the middle part of the LCD logic board is concave, and the edge of the LCD logic board will be tilted upward, the sixth piston 619 moves upward under pressure, hydraulic oil is stored in the oil storage tank 617, the fourth piston 607 moves downward, and the marking seal 608 moves downward accordingly and stamps the mark.

[0041] The use method and advantages of the present invention: The fixed structure for pressure testing of LCD logic board has the following working process: like Figures 1 to 7As shown: after loosening the support column 613, the fifth oil storage cylinder 612 can be moved, so that the initial position of each support frame 616 can be adjusted according to the size of the LCD logic board. After completing the position adjustment operation, tighten the support column 613 to fix the fifth oil storage cylinder 612. The pressure tester is installed on the mounting plate 604 using the mounting hole 605 and the external bolts. A conveyor belt is provided under the left electric suction cup 408. First, the first LCD logic board is manually placed on the left electric suction cup 408. After the LCD logic board is sucked by the electric suction cup 408, the turntable 401 rotates 90 degrees, and then the electric telescopic rod 416 extends, and the moving plate 417 moves to drive the second circular gear 414 to rotate. The rotating shaft 410 is between the first bevel gear 411 and the second bevel gear 413. The two first circular gears 412 rotate under the driving action, thereby driving the two first circular gears 412 to rotate, the two ring gears 403 rotate, the two first connecting pipes 402 turn over 180 degrees, the two first oil storage cylinders 404 turn over 180 degrees, and when the rack 419 leaves the second circular gear 414, the push block 420 slides to the bottom in the sleeve 421, and the locking rod 418 is inserted between the two limit blocks 415 to lock the second circular gear 414. Then the turntable 401 continues to rotate 90 degrees, the electric telescopic rod 416 continues to extend, the moving plate 417 and the push block 420 continue to move, thereby pushing the sleeve 421 and the second oil storage cylinder 424 to move. Hydraulic oil is stored in the second oil storage cylinder 424. The two first pistons 405 move and extend under the action of the oil pressure, and the support seat 406 The electric suction cup 408 moves as a whole, so as to support the LCD logic board to be tested between the four support frames 616, the electric telescopic column 602 extends, the third piston 603 moves downward, the third oil storage cylinder 601 stores hydraulic oil, the four fifth pistons 615 move, and the four support frames 616 approach each other and move the same distance, so as to limit and support the LCD logic board, and then use the pressure tester to perform a pressure test on the LCD logic board. If the LCD logic board is deformed, the middle part of the LCD logic board is concave, and the edge of the LCD logic board is tilted, the sixth piston 619 moves upward under pressure, the oil storage tank 617 stores hydraulic oil, the fourth piston 607 moves downward, and the marking seal 608 moves downward and covers the mark on the LCD logic board, so as to achieve To achieve the effect of automatic marking, the first compression spring 407 supports the electric suction cup 408. After the four support frames 616 are removed, the electric telescopic rod 416 shrinks, the movable plate 417 moves a distance first, the push block 420 pulls the sleeve 421 to move, the first piston 405, the support seat 406 and the electric suction cup 408 move back, and then the turntable 401 rotates 90 degrees, and the two first oil storage cylinders 404 are synchronously flipped and then the turntable 401 is rotated 90 degrees. In the subsequent repeated operation process, after completing the test of each LCD logic board, the two electric suction cups 408 need to complete two back and forth liftings at the same time, because the previous LCD logic board can be put back on the conveyor belt while the next LCD logic board is lifted up for testing.After the two electric suction cups 408 move back, the conveyor belt runs and transports the LCD logic board to the bottom of the electric suction cups 408. The electric suction cups 408 above the conveyor belt need to be lifted back and forth again to suck up the LCD logic board, which is convenient for automatic loading and unloading.

[0042] In summary, the fixed structure for pressure testing of LCD logic boards achieves the purpose of automatically marking unqualified products, automatically loading and unloading materials, and being suitable for LCD logic boards of different sizes, thus meeting people's usage needs.

[0043] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A fixing structure for pressure testing of an LCD logic board, comprising a base (1), characterized in that: A first bracket (2) is fixed to one side of the upper end surface of the base (1), a motor (3) is fixed inside the top of the first bracket (2), and the top of the motor (3) is connected to an automatic loading and unloading mechanism (4); A second bracket (5) is fixed to the other side of the upper end surface of the base (1); a support, fixing and marking mechanism (6) is fixed to one side of the second bracket (5); the support, fixing and marking mechanism (6) comprises a third oil storage cylinder (601); a third piston (603) is slidably connected in the third oil storage cylinder (601); a mounting plate (604) is fixed to the bottom of the third piston (603); a mounting hole (605) is provided at the bottom of the mounting plate (604); and four fixing frames (61 0), a support sleeve (611) is fixed to the bottom of each of the four fixing frames (610), a fifth oil storage cylinder (612) passes through the support sleeve (611), the fifth oil storage cylinder (612) is fixed to the support sleeve (611) via a support column (613), the fifth oil storage cylinder (612) is connected to the third oil storage cylinder (601) via a third connecting pipe (614), a fifth piston (615) is slidably connected inside the fifth oil storage cylinder (612), and a support frame (616) is fixed to the inner end of the fifth piston (615).

2. The fixing structure for pressure testing of an LCD logic board according to claim 1, characterized in that: The automatic loading and unloading mechanism (4) comprises a turntable (401), and the turntable (401) is connected to the top of the motor (3), the two sides of the turntable (401) are symmetrically rotatably connected to the first connecting pipe (402), and the outer side of the first connecting pipe (402) is fixed with a gear ring (403), the outer end of the first connecting pipe (402) is fixed with a first oil storage cylinder (404), and the first oil storage cylinder (404) is slidably connected with a first piston (405), the outer end of the first piston (405) is fixed with a support seat (406), and the outer side of the support seat (406) is connected to the electric suction cup (408) through a first compression spring (407).

3. The fixing structure for pressure testing of an LCD logic board according to claim 2, characterized in that: A cover frame (409) is fixed to the upper end surface of the turntable (401), and a rotating shaft (410) is rotatably connected to the cover frame (409). A first bevel gear (411) is fixed to the outer side of the rotating shaft (410), and first circular gears (412) are symmetrically fixed at both ends of the rotating shaft (410), and the first circular gear (412) is meshingly connected to the ring gear (403).

4. The fixing structure for pressure testing of an LCD logic board according to claim 3, characterized in that: The top of the cover frame (409) is rotatably connected to a second circular gear (414), and a second bevel gear (413) is fixed to the bottom of the second circular gear (414); the second bevel gear (413) is meshingly connected to the top of the first bevel gear (411), and limiting blocks (415) are symmetrically fixed on both sides of the upper end surface of the second circular gear (414).

5. The fixing structure for pressure testing of LCD logic board according to claim 4, characterized in that: An electric telescopic rod (416) is fixed to one side of the upper end surface of the turntable (401), and a moving plate (417) is fixed to one end of the electric telescopic rod (416), a locking rod (418) is fixed to the upper end surface of the moving plate (417), and a rack (419) is fixed to one end surface of the moving plate (417), and the rack (419) is meshingly connected to the second circular gear (414).

6. The fixing structure for pressure testing of an LCD logic board according to claim 5, characterized in that: A push block (420) is fixed on one side of the movable plate (417), and one side of the push block (420) is connected to the sleeve (421) via a second compression spring (422). The push block (420) is slidably connected to the inner side of the sleeve (421), and a second piston (423) is fixed on one side of the sleeve (421). A second oil storage cylinder (424) is fixed on the other side of the upper end surface of the turntable (401), and the second piston (423) is slidably connected in the second oil storage cylinder (424). An oil passage (426) is provided in the turntable (401), and the second oil storage cylinder (424) is connected to the oil passage (426) via a second connecting pipe (425), and an end of the oil passage (426) is connected to the first connecting pipe (402).

7. The fixing structure for pressure testing of an LCD logic board according to claim 1, characterized in that: An electric telescopic column (602) is fixed to the top of the third oil storage cylinder (601), and the electric telescopic column (602) passes through the top of the third oil storage cylinder (601) and is connected to the third piston (603).

8. The fixing structure for pressure testing of LCD logic board according to claim 1, characterized in that: A fourth oil storage cylinder (606) is fixed to the bottom of the mounting plate (604), and a fourth piston (607) is slidably connected inside the fourth oil storage cylinder (606). A marking seal (608) is rotatably connected to the bottom of the fourth piston (607), and the marking seal (608) is connected to the fourth piston (607) via a volute spring (609).

9. The fixing structure for pressure testing of an LCD logic board according to claim 8, characterized in that: An oil storage tank (617) is provided at the inner top of one of the support frames (616), and a third compression spring (618) is fixed in the oil storage tank (617). A sixth piston (619) is fixed at the bottom of the third compression spring (618), and the sixth piston (619) is slidably connected in the oil storage tank (617). The fourth oil storage cylinder (606) is connected to the oil storage tank (617) via a fourth connecting pipe (620).

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