CN110231723B - Liquid crystal screen jacking and lighting testing device - Google Patents
Liquid crystal screen jacking and lighting testing device Download PDFInfo
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- CN110231723B CN110231723B CN201910352755.0A CN201910352755A CN110231723B CN 110231723 B CN110231723 B CN 110231723B CN 201910352755 A CN201910352755 A CN 201910352755A CN 110231723 B CN110231723 B CN 110231723B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 33
- 238000012360 testing method Methods 0.000 title claims abstract description 24
- 239000000523 sample Substances 0.000 claims abstract description 91
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 230000001360 synchronised effect Effects 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000005540 biological transmission Effects 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 238000009434 installation Methods 0.000 claims 5
- 238000004519 manufacturing process Methods 0.000 abstract description 12
- 238000001514 detection method Methods 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 238000007667 floating Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Tests Of Electronic Circuits (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a liquid crystal screen jacking and lighting testing device, which adopts a double-row roller conveying line to convey and fix a clamping jig of a liquid crystal screen PCB connector, and a probe seat jacking driving mechanism is arranged below the inner side of the double-row roller conveying line, a substrate in the mechanism is fixed with a frame, and then the lifting frame is connected with a lifting frame through a lifting frame lifting driving device to control the lifting frame to move up and down, and a vertical guide structure matched with the substrate is arranged in the lifting frame; a probe seat fixing plate is fixed on the lifting frame, and a probe seat is fixed on the plate; the lifting frame is also connected with a jacking positioning plate which is in alignment fit with the clamping jig through an elastic mechanism, and the plate is an annular plate positioned at the periphery of the probe seat; the rack is provided with a gear rod for stopping the clamping jig above the probe seat jacking driving mechanism. The device has the advantages of higher detection precision, high detection speed, high efficiency, suitability for factory assembly line production operation, simple control and lower cost.
Description
Technical Field
The invention relates to a liquid crystal screen jacking and lighting testing device.
Background
After the liquid crystal screen is produced, the liquid crystal screen needs to be tested, and whether the liquid crystal screen can be lightened or not is detected by electrifying. The core equipment of test is the probe seat, and this kind of probe seat is gone up and is arranged conductive contact, corresponds with the conductive contact one by one on the LCD screen PCB board connector, and the probe seat passes through the electric wire connection power, and after it contacted with LCD screen PCB board connector, whether can be lighted the inspection product quality through judging the LCD screen.
In the traditional testing process in the industry, the probe seat is manually operated to be in contact with the product, so that the defects of time and labor waste, lower efficiency, difficult manual alignment, poor precision and easy misjudgment caused by misoperation are overcome. Therefore, a special lighting testing device is designed in the industry to operate the probe seat to contact with the product for testing.
For example, an existing common lighting test device adopts an XZ-axial lifting manipulator mechanism, which can drive a probe seat to translate along the X-axial direction of a horizontal plane and move along the Z-axial direction of a vertical direction, so as to ensure that the probe seat is in alignment contact with a liquid crystal display PCB connector fixed in a clamping jig. Although this mechanism is more labor-efficient than manual, the following problems still remain:
1) The manipulator needs to be controlled to finish the actions in the X axis and the Z axis, the actions are more, the alignment requirement is high, the speed is low, the efficiency is low, and the problem of great detection precision still exists;
2) The liquid crystal screen PCB connectors which are arranged on the assembly line are manually transferred in advance and then are fixed in place by adopting the clamping jig, and then detection is carried out, so that the production speed is slowed down, and the assembly line production operation of a factory is not facilitated;
3) The drive control is carried out by adopting a plurality of groups of control mechanisms in the X direction and the Z direction, the control mechanism is complex, and the equipment cost is high.
Disclosure of Invention
The invention aims at: the liquid crystal screen jacking lighting testing device is higher in detection precision, high in detection speed and efficiency, suitable for factory flow line production operation, simple to control and low in cost.
The technical scheme of the invention is as follows: the liquid crystal screen jacking and lighting testing device comprises a probe seat and a clamping jig for fixing a liquid crystal screen PCB connector, and is characterized by further comprising a frame, a double-row roller conveying line arranged on the frame and used for conveying the clamping jig, and a probe seat jacking driving mechanism arranged below the inner side of the double-row roller conveying line;
The probe seat jacking driving mechanism comprises a base plate, a jacking positioning plate, a probe seat fixing plate, a lifting frame and a lifting frame lifting driving device; the base plate is fixed with the frame, the base plate is connected with the lifting frame through a lifting frame lifting driving device to control the lifting frame to move up and down, and a vertical guide structure matched with the base plate is arranged in the lifting frame;
The probe seat fixing plate is fixed with the lifting frame, and the jacking positioning plate is connected with the lifting frame through an elastic mechanism; the probe seat is fixed on the probe seat fixing plate, and the jacking positioning plate is an annular plate positioned at the periphery of the probe seat; the jacking positioning plate is provided with a positioning plate conical alignment column, and the clamping jig is provided with an alignment hole matched with the positioning plate conical alignment column;
A gear rod is arranged on the frame and used for stopping the clamping jig above the probe seat jacking driving mechanism; in the lifting process of the lifting frame, when the lifting positioning plate contacts the bottom of the clamping jig, the probe seat fixing plate can continuously lift through the compression elastic mechanism, and the probe seat is driven to protrude out of the lifting positioning plate to contact with the liquid crystal display PCB connector in the clamping jig.
Further, the lifting frame comprises a movable plate positioned below the base plate, a plurality of guide posts and a plurality of connecting plates, wherein the guide posts and the connecting plates are vertically fixed on the movable plate, each connecting plate passes through a corresponding slot arranged on the base plate, the top of each connecting plate is fixed with the probe seat fixing plate, each guide post passes through a corresponding hole arranged on the base plate, and each hole is internally provided with a lower linear bearing matched with the guide post; the bottom of the jacking positioning plate is provided with upper linear bearings which are matched with the guide posts in a one-to-one correspondence manner, the elastic mechanism is arranged in each upper linear bearing, and the elastic mechanism is propped between the guide posts and the jacking positioning plate; and each guide post, and a lower linear bearing and an upper linear bearing matched with the guide post jointly form the vertical guide structure.
Furthermore, the lifting driving device of the lifting frame is an air cylinder, the air cylinder comprises a cylinder body and a piston ejector rod extending out of the cylinder body, the cylinder body is fixed with the bottom of the movable plate, and the piston ejector rod is fixed with the base plate through a coupler. Of course, other than the air cylinder, the lifting driving device of the lifting frame can also adopt the prior conventional driving equipment such as a hydraulic cylinder or a linear motor.
Further, in the present invention, the elastic mechanism is a mechanical spring, an elastic pad or an air spring.
Further, the machine frame is provided with a gear rod lifting driving device which is connected with and drives the gear rod to lift up and down, a contact sensor or a photoelectric sensor which is used for detecting whether the clamping jig is in place or not, and a PLC controller which is electrically connected with the lifting driving device of the lifting frame, the gear rod lifting driving device and the contact sensor or the photoelectric sensor. According to the design, the degree of automation of the device can be improved by introducing the PLC to be matched with the contact sensor or the photoelectric sensor, and the gear rod is driven by the gear rod lifting driving device to move up and down, so that continuous conveying after the clamping jig is detected is further ensured not to be interfered, and the production link is smoother. Likewise, the gear lever lifting driving device can select the existing conventional driving equipment such as an air cylinder, a hydraulic cylinder or a linear motor.
Further, the double-row roller conveying line comprises two roller driving modules which are arranged on a frame and are symmetrically arranged in parallel, each roller driving module comprises a roller mounting vertical plate which is fixed with the frame, one surface of each roller mounting vertical plate is pivotally provided with a row of rollers, the other surface of each roller mounting vertical plate is provided with a synchronous belt transmission mechanism, each synchronous belt transmission mechanism comprises a main synchronous belt pulley which is pivotally arranged on each roller mounting vertical plate, a plurality of auxiliary synchronous belt pulleys which are coaxially arranged with each roller, a plurality of fixed tensioning wheels which are pivotally arranged on each roller mounting vertical plate and at least one movable tensioning wheel, and the main synchronous belt pulleys, the auxiliary synchronous belt pulleys, the fixed tensioning wheels and the movable tensioning wheels are all connected through synchronous belts; the main synchronous pulleys in the two roller driving modules are coaxially connected through a connecting shaft; the double-row roller conveying line further comprises a conveying line motor fixed with the frame, a motor output belt wheel is fixed on an output shaft of the conveying line motor, and the motor output belt wheel is connected with one of the main synchronous belt wheels through a belt.
Furthermore, in the invention, the probe seat conical alignment column is fixed on the probe seat, and the liquid crystal screen PCB connector is provided with an alignment guide hole matched with the probe seat conical alignment column.
Furthermore, in the invention, the number of the conical alignment posts of the positioning plate and the conical alignment posts of the probe seat is two, and the connecting line of the conical alignment posts of the two positioning plate and the connecting line of the conical alignment posts of the two probe seats are vertically crossed. Such a design can further improve the alignment accuracy.
The specific use and working principle of the invention are as follows:
The produced liquid crystal screen PCB connector product is fixed by adopting the existing clamping jig, faces downwards, and is then conveyed on a double-row roller conveying line. In order to prevent the surface of the product from being scratched and damaged in the conveying process, the product is sunk into the bottom surface of the clamping jig.
After a contact sensor or a photoelectric sensor on the rack senses that the clamping jig is in place, the PLC controller firstly controls the gear rod lifting driving device to drive the gear rod to lift so as to block the clamping jig, the clamping jig is stopped above the probe seat lifting driving mechanism, then the PLC controller controls the lifting driving device to operate, and under the driving of the lifting driving device, the lifting frame drives the lifting locating plate and the probe seat fixing plate to lift together. The jacking locating plate is matched with the locating hole on the clamping jig in a locating way through the locating plate conical locating column arranged on the jacking locating plate, so that the accurate locating of the probe seat and the product is ensured.
And after the jacking locating plate contacts the bottom of the clamping jig, the probe seat fixing plate can continuously ascend through the compression elastic mechanism, so that the probe seat is driven to protrude out of the jacking locating plate to contact with the liquid crystal display PCB connector in the clamping jig, and the lighting test is performed. The design of elastic mechanism plays the effect of rising buffering on the one hand, ensures probe seat and product contact safety, avoids the damage, and the elasticity that in addition provides through elastic mechanism floats the volume, and the probe seat can bulge the jacking locating plate and stretch into in the centre gripping tool and contact with the product, caters for the invagination type location design of product on the centre gripping tool.
After the test is finished, the lifting frame and the jacking locating plate and the probe seat fixing plate on the lifting frame are reset under the driving of the lifting frame lifting driving device, and meanwhile the gear rod lifting driving device drives the gear rod to descend, so that the clamping jig filled with the product can be continuously conveyed to the next production link. The above process is then repeated for testing of the next product.
The invention has the advantages that:
the invention has the advantages of higher detection precision, high detection speed, high efficiency, simple control and lower cost, is suitable for the production line production operation of factories, and has the characteristics of:
1) The probe seat jacking driving mechanism and the double-row roller conveying line are in coordination, so that the product on the production line can be quickly lightened and tested, and then the product is conveyed to the next production link, the product is not required to be transferred, the working efficiency is higher, and the production efficiency of enterprises can be greatly improved.
2) The probe seat jacking driving mechanism only needs to execute jacking action in the vertical direction when in work, and the positioning is realized by the gear rod on the double-row roller conveying line and the positioning plate conical positioning column arranged on the jacking positioning plate.
3) According to the invention, a double alignment design is adopted, the conical alignment column of the positioning plate on the positioning plate is jacked to be aligned with the alignment Kong Xianhang on the clamping jig, then the conical alignment column of the probe seat on the probe seat is aligned with the alignment hole on the liquid crystal display PCB connector product, so that the alignment precision of the probe seat and the product is ensured to be higher, and the lighting test precision can be further improved.
4) The jacking locating plate is connected with the lifting frame through the elastic mechanism, so that the jacking locating plate is of an elastic floating type design, and after the jacking locating plate contacts the bottom of the clamping jig, the probe seat can protrude out of the jacking locating plate to contact with a liquid crystal display PCB connector product in the clamping jig through the elastic floating amount provided by the elastic mechanism. This design has two positive effects: firstly, an elastic mechanism provides jacking buffering force to avoid rapid collision between a probe seat and a product and damage; secondly, ensure that the probe seat can bulge and jack up the locating plate and stretch into in the centre gripping tool and contact with the product, cater for the invagination type location design of product on the centre gripping tool, and the invagination type design purpose of product on the centre gripping tool is to avoid the product to suffer and scratch the damage.
5) The vertical guide structure is arranged between the lifting frame and the base plate, and adopts the matching mode of the guide post and the linear bearing, so that the lifting frame is ensured to have higher vertical movement precision and operation reliability.
6) According to the lifting driving device of the lifting frame, the air cylinder is adopted, the cylinder body of the air cylinder is fixed with the bottom of the movable plate, the piston ejector rod is fixed with the base plate through the coupler, namely, the air cylinder adopts a flip-chip mode, the piston ejector rod is not directly used for driving the movable plate to move, and the reaction force received by the cylinder body is used for driving the movable plate to move. The cylinder body is fixed at the bottom of the movable plate, namely, the movable plate is positioned outside the lifting frame, so that wiring on the cylinder body can be led out smoothly without interfering the lifting frame, and particularly, in the long-term use process, the wiring can be prevented from damaging the lifting frame, and the action precision and the service life of the lifting frame are influenced.
7) The double-row roller conveyor line adopts the same conveyor line motor to drive the roller driving modules at two sides to operate simultaneously, and the whole structure design is compact and the operation is reliable.
Drawings
The invention is further described below with reference to the accompanying drawings and examples:
FIG. 1 is a schematic perspective view of an embodiment of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a cross-sectional view of section A-A of FIG. 2;
FIG. 4 is a schematic diagram showing a structure of a probe holder jack driving mechanism (the substrate and the upper linear bearing thereof are omitted)
Fig. 5 is a view from B-B of fig. 2 (after the single-sided roller drive module has been housing removed).
Wherein:
1. A probe seat; 1a, a probe seat conical alignment column; 2. a frame; 3. a substrate; 3a, slotting; 4. jacking the positioning plate; 4a, positioning plate conical alignment columns; 5. a probe seat fixing plate; 6. lifting driving device of lifting frame; 7. an elastic mechanism; 8. a movable plate; 9. a guide post; 10. a connecting plate; 11. a lower linear bearing; 12. an upper linear bearing; 13. a cylinder; 14. a piston ejector rod; 15. a coupling; 16. a double-row roller conveying line; 17. a gear lever; 18. a roller driving module; 19. the idler wheels are provided with vertical plates; 20. a roller; 21. a primary synchronous pulley; 22. a secondary synchronous pulley; 23. fixing a tensioning wheel; 24. a movable tensioning wheel; 25. a synchronous belt; 26. a conveyor line motor; 27. a gear lever lifting driving device; 28. a photoelectric sensor.
Detailed Description
Examples: referring to fig. 1 to 5, a specific embodiment of the device for testing the jacking lighting of the liquid crystal display provided by the invention is described in detail as follows:
Firstly, as shown in fig. 1, the device is provided with a probe seat 1 and a clamping fixture (omitted in the figure) for fixing a liquid crystal display PCB connector as in the conventional technology, and a rack 2, a double-row roller conveying line 16 arranged on the rack 2 for conveying the clamping fixture, and a probe seat jacking driving mechanism arranged below the inner side of the double-row roller conveying line 16 are also arranged.
The probe seat jacking driving mechanism is of a core design, and specifically is shown in fig. 2-4, and is provided with a base plate 3, a jacking positioning plate 4, a probe seat fixing plate 5, a lifting frame and a lifting frame lifting driving device 6; the base plate 3 is fixed with the frame 2, the base plate 3 is connected with the lifting frame through a lifting frame lifting driving device 6 to control the lifting frame to move up and down, and a vertical guide structure matched with the base plate 3 is arranged in the lifting frame; the probe seat fixing plate 5 is fixed with the lifting frame, and the jacking positioning plate 4 is connected with the lifting frame through an elastic mechanism 7; the probe seat 1 is fixed on the probe seat fixing plate 5, and the jacking positioning plate 4 is an annular plate positioned at the periphery of the probe seat 1.
In this embodiment, the jacking positioning plate 4 is provided with a positioning plate conical alignment column 4a, and the clamping jig is provided with an alignment hole matched with the positioning plate conical alignment column; the probe seat 1 is also fixed with a probe seat conical alignment column 1a, and the liquid crystal screen PCB connector is provided with an alignment guide hole matched with the probe seat conical alignment column. As shown in fig. 1 to 4, in this embodiment, two positioning plate conical alignment posts 4a and two probe seat conical alignment posts 1a are provided, and the connection line of the two positioning plate conical alignment posts 4a perpendicularly intersects with the connection line of the two probe seat conical alignment posts 1 a.
Referring specifically to fig. 3 and 4, the lifter in this embodiment is formed as follows: the probe comprises a movable plate 8 positioned below a base plate 3, four guide posts 9 vertically fixed on the movable plate 8 and two connecting plates 10, wherein each connecting plate 10 passes through a corresponding slot 3a arranged on the base plate 3, the top of each connecting plate is fixed with a probe seat fixing plate 5, each guide post 9 passes through a corresponding hole arranged on the base plate 3, and a lower linear bearing 11 matched with the guide post 9 is arranged in each hole. In this embodiment, the bottom of the jacking positioning plate 4 is provided with upper linear bearings 12 corresponding to the guide posts 9 one by one, and the elastic mechanism is arranged in each upper linear bearing 12, and is a mechanical spring, which is propped between the guide post 9 and the jacking positioning plate 4. Each guide post 9 and a lower linear bearing 11 and an upper linear bearing 12 matched with the guide post 9 jointly form the vertical guide structure.
The lifting driving device 6 in the embodiment is a cylinder, the cylinder comprises a cylinder body 13 and a piston ejector rod 14 extending out of the cylinder body 13, the cylinder body 13 is fixed with the bottom of the movable plate 8, and the piston ejector rod 14 is fixed with the base plate 3 through a coupling 15. The four guide posts 9 are distributed in a matrix with the piston ejector rod 14 as the center, and the two connecting plates 10 are symmetrically distributed on the left side and the right side of the piston ejector rod 14 so as to ensure the stress balance of the movable plate 8 during guiding.
And referring to fig. 1-3, the rack is provided with a gear plate 17 positioned in front of the probe seat lifting driving mechanism and a gear rod lifting driving device 27 connected with the gear rod 17 for driving the gear rod 17 to lift up and down. Meanwhile, in the present embodiment, a photoelectric sensor 28 for detecting whether the clamping jig is in place or not is provided between the gear plate 17 and the probe seat lifting driving mechanism. The automatic clamping device further comprises a PLC controller electrically connected with the lifting frame lifting driving device 6, the gear rod lifting driving device 27 and the photoelectric sensor 28, when the photoelectric sensor 28 senses that the clamping device is in place, the PLC controller firstly controls the gear rod lifting driving device 27 to drive the gear rod to lift so as to block the clamping device, and then sends out a signal to control the lifting frame lifting driving device 6 to operate. The gear lever lifting drive device 27 in this embodiment is a cylinder.
Referring to fig. 1 and 5, the double row roller conveyor line 16 in this embodiment is composed of two roller driving modules 18 disposed on the frame 2 and symmetrically arranged in parallel, and a conveyor line motor 26 fixed to the frame 2.
Each roller driving module 18 shown in fig. 1 actually includes a housing cover (not shown) from which we have removed the housing cover for convenience of viewing the internal transmission structure, and the internal transmission structure of the roller driving module 18 is shown in fig. 5, which is configured to include a roller mounting riser 19 fixed to the frame 2, one side of the roller mounting riser 19 is pivotally mounted with a row of 5 rollers 20, and the other side is mounted with a timing belt transmission mechanism including a primary timing pulley 21 pivotally mounted on the roller mounting riser 19, 5 secondary timing pulleys 22 coaxially disposed with the respective rollers 20, 2 fixed tension pulleys 23 pivotally mounted on the roller mounting riser 19, and 1 movable tension pulley 24. The movable tensioning wheel 24 can adjust the displacement tensioning wheel and is pivotally arranged in a slotted hole formed in the roller mounting vertical plate 19.
The primary pulley 21, the secondary pulley 22, the fixed sheave 23, and the movable sheave 24 are all connected by a timing belt 25. The main synchronous pulleys 21 in the two roller driving modules 18 are coaxially connected through a connecting shaft; a motor output pulley is fixed to an output shaft of the conveyor line motor 26, and is connected to one of the primary synchronous pulleys 21 by a belt.
The specific use and working principle of the invention are as follows:
The produced liquid crystal screen PCB connector product is fixed by adopting the existing clamping jig, faces downwards, and is then placed on a double-row roller conveying line 16 for conveying. In order to prevent the surface of the product from being scratched and damaged in the conveying process, the product is sunk into the bottom surface of the clamping jig.
When the photoelectric sensor 28 on the frame 2 senses that the clamping jig is in place, the PLC controller firstly controls the gear rod lifting driving device 27 to drive the gear rod 17 to lift so as to block the clamping jig, the clamping jig stops above the probe seat lifting driving mechanism, then the PLC controller controls the lifting frame lifting driving device 6 to operate, and under the driving of the lifting frame lifting driving device 6, the lifting frame drives the lifting positioning plate 4 and the probe seat fixing plate 5 to lift together. The jacking locating plate 4 is matched with the locating hole on the clamping jig in a locating way through the locating plate conical locating column 4a arranged on the jacking locating plate, so that the locating accuracy of the probe seat 1 and the product is ensured.
And after the jacking locating plate 4 contacts the bottom of the clamping jig, the probe seat fixing plate 5 can continuously ascend through the compression elastic mechanism 7, so that the probe seat 1 is driven to protrude out of the jacking locating plate 4 to contact with a liquid crystal display PCB connector product in the clamping jig, and the lighting test is performed. The design of the elastic mechanism 7 plays a role in lifting and buffering on one hand, ensures that the probe seat 1 is in contact with a product safely, avoids damage, and in addition, the probe seat 1 can protrude out of the lifting and positioning plate 4 to extend into the clamping jig to be in contact with the product through the elastic floating amount provided by the elastic mechanism 7, so that the design of inward sinking type positioning of the product on the clamping jig is catered.
After the test is finished, the lifting frame and the jacking positioning plate 4 and the probe seat fixing plate 5 on the lifting frame are driven by the lifting frame lifting driving device 6 to reset, and meanwhile, the gear rod lifting driving device 27 drives the gear rod 17 to descend, so that the clamping jig filled with the product can be continuously conveyed to the next production link. The above process is then repeated for testing of the next product.
The above embodiments are merely for illustrating the technical concept and features of the present invention, and are not intended to limit the scope of the present invention to those skilled in the art to understand the present invention and implement the same. All modifications made according to the spirit of the main technical proposal of the invention should be covered in the protection scope of the invention.
Claims (6)
1. The jacking and lighting testing device for the liquid crystal display comprises a probe seat (1) and a clamping jig for fixing a PCB connector of the liquid crystal display, and is characterized by further comprising a frame (2), a double-row roller conveying line (16) arranged on the frame (2) and used for conveying the clamping jig, and a probe seat jacking driving mechanism arranged below the inner side of the double-row roller conveying line (16);
The probe seat jacking driving mechanism comprises a base plate (3), a jacking positioning plate (4), a probe seat fixing plate (5), a lifting frame and a lifting frame lifting driving device (6); the base plate (3) is fixed with the frame (2), the base plate (3) is connected with the lifting frame through a lifting frame lifting driving device (6) to control the lifting frame to move up and down, and a vertical guide structure matched with the base plate (3) is arranged in the lifting frame;
The probe seat fixing plate (5) is fixed with the lifting frame, and the jacking positioning plate (4) is connected with the lifting frame through an elastic mechanism (7); the probe seat (1) is fixed on a probe seat fixing plate (5), and the jacking positioning plate (4) is an annular plate positioned at the periphery of the probe seat (1); the jacking positioning plate (4) is provided with a positioning plate conical alignment column (4 a), and the clamping jig is provided with an alignment hole matched with the positioning plate conical alignment column;
A gear lever (17) is arranged on the frame (2) and used for stopping the clamping jig above the probe seat jacking driving mechanism; in the lifting process of the lifting frame, when the lifting positioning plate (4) contacts the bottom of the clamping jig, the probe seat fixing plate (5) can continuously lift through the compression elastic mechanism (7) to drive the probe seat (1) to protrude out of the lifting positioning plate (4) to contact with the liquid crystal screen PCB connector in the clamping jig;
The lifting frame comprises a movable plate (8) positioned below the base plate (3), a plurality of guide posts (9) and a plurality of connecting plates (10), wherein the guide posts (9) and the connecting plates (10) are vertically fixed on the movable plate (8), each connecting plate (10) passes through a corresponding groove (3 a) arranged on the base plate (3), the top of each connecting plate is fixed with the probe seat fixing plate (5), each guide post (9) passes through a corresponding opening arranged on the base plate (3), and a lower linear bearing (11) matched with each guide post (9) is arranged in each opening; the bottom of the jacking positioning plate (4) is provided with upper linear bearings (12) which are matched with the guide posts (9) in a one-to-one correspondence manner, the elastic mechanism is arranged in each upper linear bearing (12), and the elastic mechanism is propped between the guide posts (9) and the jacking positioning plate (4); the guide posts (9) and the lower linear bearings (11) and the upper linear bearings (12) matched with the guide posts (9) jointly form the vertical guide structure;
The double-row roller conveying line (16) comprises two roller driving modules (18) which are arranged on the frame (2) in parallel and symmetrical mode, each roller driving module (18) comprises a roller installation vertical plate (19) which is fixed with the frame (2), one surface of each roller installation vertical plate (19) is pivoted with one row of rollers (20), the other surface of each roller installation vertical plate is provided with a synchronous belt transmission mechanism, each synchronous belt transmission mechanism comprises a main synchronous belt wheel (21) pivoted on each roller installation vertical plate (19), a plurality of secondary synchronous belt wheels (22) which are coaxially arranged with each roller (20), a plurality of fixed tensioning wheels (23) pivoted on each roller installation vertical plate (19) and at least one movable tensioning wheel (24), and the main synchronous belt wheels (21), the secondary synchronous belt wheels (22), the fixed tensioning wheels (23) and the movable tensioning wheels (24) are all connected through synchronous belts (25); the main synchronous pulleys (21) in the two roller driving modules (18) are coaxially connected through a connecting shaft; the double-row roller conveying line (16) further comprises a conveying line motor (26) fixed with the frame (2), and a motor output belt wheel is fixed on an output shaft of the conveying line motor (26) and is connected with one of the main synchronous belt wheels (21) through a belt.
2. The device for jacking and lighting test of the liquid crystal display according to claim 1, wherein the lifting drive device (6) of the lifting frame is an air cylinder, the air cylinder comprises a cylinder body (13) and a piston ejector rod (14) extending out of the cylinder body (13), the cylinder body (13) is fixed with the bottom of the movable plate (8), and the piston ejector rod (14) is fixed with the base plate (3) through a coupler (15).
3. The liquid crystal display jacking lighting test device according to claim 1, wherein the elastic mechanism (7) is a mechanical spring, an elastic gasket or an air spring.
4. The device for jacking and lighting the liquid crystal display according to claim 1, wherein the rack is provided with a gear rod lifting driving device (27) which is connected with and drives the gear rod (17) to lift up and down, a contact sensor or a photoelectric sensor (28) which is used for detecting whether the clamping jig is in place or not, and a PLC controller which is electrically connected with the lifting driving device (6), the gear rod lifting driving device (27) and the contact sensor or the photoelectric sensor (28), when the contact sensor or the photoelectric sensor (28) senses that the clamping jig is in place, the PLC controller firstly controls the gear rod lifting driving device (27) to drive the gear rod to lift up to block the clamping jig, and then sends out a signal to control the lifting driving device (6) to operate.
5. The device for jacking and lighting test of the liquid crystal display according to claim 1, wherein the probe seat (1) is fixedly provided with a probe seat conical alignment column (1 a), and the liquid crystal display PCB board connector is provided with an alignment guide hole matched with the probe seat conical alignment column.
6. The device for jacking and lighting test of a liquid crystal display according to claim 5, wherein the number of the positioning plate conical alignment posts (4 a) and the number of the probe seat conical alignment posts (1 a) are two, and the connecting line of the two positioning plate conical alignment posts (4 a) is vertically intersected with the connecting line of the two probe seat conical alignment posts (1 a).
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| CN110231724B (en) * | 2019-04-29 | 2024-05-24 | 苏州日和科技有限公司 | Probe seat jacking device for liquid crystal display lighting test |
| CN110494036A (en) * | 2019-09-29 | 2019-11-22 | 格力电器（武汉）有限公司 | Machine core test device and machine core test method |
| CN113335888B (en) * | 2021-06-21 | 2023-08-08 | 怡力精密制造有限公司 | Production line |
| CN115236887B (en) * | 2022-07-21 | 2024-01-26 | 江西富视兴电子科技有限公司 | Aging detection device for black-and-white liquid crystal display |
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| CN105589229B (en) * | 2016-03-08 | 2019-01-08 | 凌云光技术集团有限责任公司 | The automatic lighting jig of liquid crystal display |
| CN207007887U (en) * | 2017-07-06 | 2018-02-13 | 天津市钧忠电子科技有限公司 | A kind of pneumatic PCB detection tool |
| CN207115970U (en) * | 2017-09-01 | 2018-03-16 | 安徽省鸿滔电子科技有限公司 | A kind of LCDs test fixture |
| CN109633934B (en) * | 2017-10-09 | 2024-02-27 | 苏州凌云视界智能设备有限责任公司 | Lighting pressing mechanism and lighting jig |
| CN208077047U (en) * | 2018-07-14 | 2018-11-09 | 深圳市鑫泰兴电子科技有限公司 | Backlight lightening jig |
| CN208334828U (en) * | 2018-07-18 | 2019-01-04 | 苏州凌云视界智能设备有限责任公司 | Automatic turning-on mechanism is manually sentenced again |
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