CN114049858A - Test regulation and control method for universal LCD (liquid crystal display) PIN testing PCB (printed circuit board) equipment - Google Patents
Test regulation and control method for universal LCD (liquid crystal display) PIN testing PCB (printed circuit board) equipment Download PDFInfo
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- CN114049858A CN114049858A CN202111179525.2A CN202111179525A CN114049858A CN 114049858 A CN114049858 A CN 114049858A CN 202111179525 A CN202111179525 A CN 202111179525A CN 114049858 A CN114049858 A CN 114049858A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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Abstract
The invention discloses universal LCD (liquid crystal display) PIN testing PCB (printed circuit board) equipment and a testing regulation and control method, and relates to the technical field of LCD testing. In the invention: all dispose butt PIN contact and test adapter on the PCB board, the downside of PCB board disposes a plurality of zebra strip electrodes. Linear pressure sensing strips are embedded and configured in the upper side guide grooves of the extension guide supports. One side end of the positioning induction pressing strip is provided with a pressing edge which is in contact fit with the linear pressure sensing strip. The upper end of an output shaft of the longitudinal hydraulic driving unit is provided with a smooth sheet; the upper side embedding of PCB bed frame is provided with the silica gel sucking disc. The invention uses a group of universal PCB test boards to be arranged in a mirror symmetry way, so as to complete the test of LCD glass with various types and specifications; and an adjusting and protecting mechanism for the LCD glass is formed, the adaptability of the LCD glass to the accurate position parameters of the PCB during the test is also improved, and the test efficiency and the test precision of the LCD glass are further improved.
Description
Technical Field
The invention relates to the technical field of LCD (liquid crystal display) testing, in particular to a testing regulation and control method for universal LCD PIN testing PCB (printed circuit board) equipment.
Background
Usually, after each type of LCD glass is manufactured, a circuit of the LCD glass needs to be tested through a PCB (printed Circuit Board) and an electric tester, so that patterns can be completely displayed, and no short circuit occurs inside the LCD glass; each line can be independently displayed, and no open circuit is generated inside the line; the pattern shows that no abnormal conditions such as deformation occur. Separate PCB versions are required for different LCD glasses, and a large amount of materials are consumed for manufacturing.
In the design stage of the LCD glass, for the zebra stripe LCD glass, in order to obtain the patterns of the product, carbon paste is needed to be used for connecting COM and SEG with metal wires, the complete patterns are displayed after the power is switched on, the patterns required by customers are drawn, and a large amount of time is consumed.
In addition, in the actual testing process, the manual testing of the LCD glass influences the testing efficiency and precision of the LCD glass, and particularly in the process of matching and adjusting between the LCD glass and testing equipment, the manual size control is small in precision and large in error, so that the LCD glass is prone to being tested inaccurately.
Prior patent document one, publication No.: CN208207425U, patent name: a portable universal LCD test board, the main technical content is as follows: including the PCB board, be used for connecting LCD test adapter of LCD and the probe that is used for connecting test equipment, still including setting up a plurality of contact group on the PCB board, the contact group is used for connecting different types of LCD test adapter, every the contact group is including a plurality of contact, every the equidistant setting of contact in the contact group, the width of the contact in every contact group and the interval between two adjacent contacts are all inequality, a plurality of groups the contact is connected with probe one-to-one, sets up a plurality of contact groups on the PCB board, can connect a plurality of types of LCD test adapter on the PCB board, and the LCD that is applicable to different interfaces tests, and then can reach and need not to change the PCB board and can accomplish and test multiple LCD, also can batch production simultaneously, is applicable to the equipment of different LCD tests, reduction in production cost.
The above-mentioned patent document describes a general-purpose PCB board using a plurality of sets of contacts to test an LCD. And does not specifically relate to the content of automatically performing high-precision and high-efficiency adaptation between the LCD and the PCB.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a test regulation and control method for universal LCD PIN-mounted test PCB equipment, which is used for testing LCD glass of various types and specifications by using a group of universal PCB test boards which are arranged in a mirror symmetry manner; and an adjusting and protecting mechanism for the LCD glass is formed, the adaptability of the LCD glass to the accurate position parameters of the PCB during the test is also improved, and the test efficiency and the test precision of the LCD glass are further improved.
In order to solve the technical problems, the invention is realized by the following technical scheme:
the invention provides a universal LCD (liquid crystal display) PIN testing PCB (printed circuit board), wherein two horizontally moving PCB boards are arranged on the upper part of a PCB base frame and are arranged in a mirror symmetry mode, first servo driving devices for driving the PCB boards to move horizontally are arranged on two end sides of the PCB base frame in a mirror symmetry mode, a butting PIN contact and a testing adapter are arranged on each PCB board, and a plurality of zebra strip electrodes are arranged on the lower side surface of each PCB board.
The bottom of PCB bed frame disposes vertical servo drive arrangement, and vertical servo drive arrangement's top lift drive is connected with bears the base disc, bears the extension guide holder of a plurality of evenly distributed of ring side fixedly connected with of base disc, extends the guide holder upside and has seted up the upside guide way, and the embedding disposes linear pressure sensing strip in the upside guide way of extension guide holder.
The lower side surface of the bearing base plate is provided with a plurality of horizontal hydraulic driving units matched with the positions of the extending guide supports, one side of each horizontal hydraulic driving unit is connected with a fine adjustment positioning mechanism in a hydraulic driving mode, the fine adjustment positioning mechanisms are installed on the extending guide supports in a guiding mode, each fine adjustment positioning mechanism is provided with a positioning induction pressing strip, and one side end of each positioning induction pressing strip is provided with a pressing edge matched with the linear pressure sensing strip in a contact mode.
A plurality of longitudinal hydraulic driving units which are distributed in a staggered manner with the horizontal hydraulic driving units are arranged on the lower side of the bearing base plate, an output shaft of each longitudinal hydraulic driving unit upwards movably penetrates through the bearing base plate, and a smooth sheet positioned above the bearing base plate is arranged at the upper end of the output shaft of each longitudinal hydraulic driving unit; the downside of PCB bed frame disposes a plurality of valve drive units, and the side embedding is provided with the silica gel sucking disc of being connected with valve drive unit on the PCB bed frame.
As a preferred technical scheme of the test equipment of the invention: PITCH among a plurality of zebra stripe electrodes on the lower side surface of the PCB is sequentially increased from front to back and from left to right.
As a preferred technical scheme of the test equipment of the invention: the upper part of the PCB base frame is provided with a movable guide groove, a support shaft lever for guiding and supporting the PCB is arranged on the movable guide groove of the PCB base frame, and two ends of the support shaft lever are provided with roller body structures; the first servo driving device is provided with an inward first telescopic shaft rod, and the end side of the first telescopic shaft rod is fixedly connected with the PCB.
As a preferred technical scheme of the test equipment of the invention: the horizontal hydraulic driving unit is provided with a displacement adjusting rod along the outward expansion direction of the extension guide bracket, and the fine adjustment positioning mechanism is fixedly arranged at the end side of the displacement adjusting rod; the edge side of the upper side surface of the optical sliding sheet is of a round angle structure.
As a preferred technical scheme of the test equipment of the invention: the horizontal height of the upper side of the linear pressure sensing strip is lower than that of the upper side of the extension guide bracket; the positioning induction layering is of a folded structure, the horizontal strip of the positioning induction layering is made of an elastic material body, and the horizontal height position of the upper side of the horizontal strip of the positioning induction layering is lower than that of the upper side of the extension guide support.
As a preferred technical scheme of the test equipment of the invention: a position coding module is arranged in the longitudinal hydraulic driving unit, the upper limit position point of the longitudinal hydraulic driving unit for driving the smooth sheet to rise is higher than the upper side height of the silica gel sucker in a normal state, and the lower limit position point of the longitudinal hydraulic driving unit for driving the smooth sheet to fall is lower than the upper side height of the silica gel sucker in an adsorption state.
As a preferred technical scheme of the test equipment of the invention: the valve driving unit is positioned between the horizontal hydraulic driving unit and the longitudinal hydraulic driving unit; the plurality of valve driving units are connected with the same air pressure control device, the plurality of longitudinal hydraulic driving units are connected with the same hydraulic control device, and the plurality of horizontal hydraulic driving units are connected with independent hydraulic control devices or different controllable output ports of the same hydraulic control device.
As a preferred technical scheme of the test equipment of the invention: the micro-adjustment positioning mechanism comprises a lower support guide block and an upper installation guide block; the upper side surface of the lower support guide block is provided with two longitudinal lower adjusting holes, and one side surface of the lower support guide block is provided with a front side screw hole vertically communicated with the lower adjusting holes; the edge of the upper side of the extension guide bracket is provided with a group of edge position guide gaps, and the upper part of the lower support guide block is clamped and installed at the position of the edge position guide gaps of the extension guide bracket; the positioning induction pressing bar is fixedly arranged on the upper installation guide block, the lower side surface of the upper installation guide block is provided with two longitudinal fine adjustment rods, the longitudinal fine adjustment rods are inserted in lower adjustment holes of the lower support guide block in a matched mode, and reinforcing screws for positioning and reinforcing the longitudinal fine adjustment rods are arranged on screw holes in the front side of the lower support guide block; one side of the upper installation guide block is provided with a hard rubber layer which is contacted with the side of the LCD glass, and the pressure applying edge of the positioning induction pressing strip and the outer side surface of the hard rubber layer are positioned in the same vertical plane.
The invention relates to a test regulation and control method for testing PCB equipment by LCD PIN, which comprises the following steps:
(1) initially debugging and positioning the induction pressing strip: opening a control system, drawing the upper installation guide block upwards for a certain distance from the lower support guide block, linearly adjusting the upper installation guide block downwards after the linear pressure sensing strip cannot detect a pressure signal, immediately stopping adjusting the upper installation guide block downwards when the linear pressure sensing strip generates the pressure signal, and screwing a reinforcing screw to finish initial induction contact debugging of a pressure applying edge on the lower side of the positioning induction pressing strip and the linear pressure sensing strip;
(2) according to the specification and model of the LCD to be tested, the control system sends an adjusting signal to the first servo driving device, and the first servo driving device adjusts the horizontal positions of the two PCBs;
(3) the control system drives all horizontal hydraulic drive units and longitudinal hydraulic drive units on the bearing base plate, the horizontal hydraulic drive units drive the fine adjustment positioning mechanisms connected with the horizontal hydraulic drive units to move outwards to the outermost end limit points, and the longitudinal hydraulic drive units drive the smooth sheets connected with the longitudinal hydraulic drive units to move upwards to the upper limit points;
(4) placing LCD glass on a bearing base plate, paying attention to the fact that the LCD glass is placed in a reverse direction, the side to be detected faces upwards, a control system sends out parameter signals of a test area range matched with the current LCD glass, and each independent horizontal hydraulic driving unit linearly and independently changes the position of the fine adjustment positioning mechanism until linear pressure sensing strips on each extension guide support detect that the pressing edge of each positioning induction pressing strip reaches a corresponding parameter position point;
(5) all the horizontal hydraulic driving units drive the micro-adjustment positioning mechanisms connected with the horizontal hydraulic driving units to move outwards for a certain distance, LCD glass adjusted in the horizontal position is separated from the clamping of the micro-adjustment positioning mechanisms, the vertical hydraulic driving units drive the smooth sheets connected with the vertical hydraulic driving units to move downwards to the lower limit point, the LCD glass is contacted with the silica gel sucker on the bearing base plate, all the valve driving units act to perform negative pressure adsorption clamping on the LCD glass, and the vertical servo driving device drives the bearing base plate and the LCD glass to move upwards at fixed points and is matched with the two PCB boards to perform testing.
Compared with the prior art, the invention has the beneficial effects that:
the universal PCB board is used, so that the use of PCB materials can be effectively reduced, the universal PCB can also be used for reducing the time consumption of full display of LCD patterns, the production efficiency is improved, and the universal PCB board can also be used for compatibility of LCD glass with different LCD sizes, PITCH and PIN foot counts so as to achieve more universality;
according to the invention, the LCD glass is placed upwards in the reverse direction, linear and smooth adjustment of the fine adjustment positioning mechanism around the bearing base plate is realized, the vertical hydraulic driving unit is used for lifting adjustment, and the air valve driving unit drives the silica gel sucker to act, so that the adsorption and clamping of the LCD glass with well-adjusted area position are smoothly and stably completed, and the LCD glass can be conveniently lifted to be matched with the universal PCB above.
Drawings
FIG. 1 is a schematic structural diagram of an LCD-mounted PIN test PCB apparatus (side view) of the present invention;
FIG. 2 is an enlarged view of a portion A of FIG. 1;
FIG. 3 is a partially enlarged view of the structure at B in FIG. 2;
FIG. 4 is a schematic view of the LCD-mounted PIN test PCB apparatus (viewed from above) according to the present invention;
FIG. 5 is a schematic structural view of a monolithic PCB according to the present invention;
FIG. 6 is a schematic structural view of a load-bearing base plate according to the present invention;
FIG. 7 is an exploded view of a portion of the carrier base of FIG. 6;
wherein: 1-a PCB pedestal; 2-moving the guide groove; 3-a roller body structure; 4-a support shaft lever; 5-a PCB board; 6-abutting the PIN contact; 7-testing the adapter; 8-a first servo drive; 9-a first telescopic shaft; 10-longitudinal servo drive; 11-carrying a base plate; 12-LCD glass; 13-extending the guide bracket; 14-upper guide groove; 15-linear pressure sensing bars; 16-horizontal hydraulic drive unit; 17-displacement adjusting rod; 18-fine adjustment positioning mechanism, 181-lower support guide block, 1811-lower adjustment hole, 1812-front side screw hole, 182-upper installation guide block, 1821-longitudinal fine adjustment guide rod; 19-positioning the induction batten; 20-a hard rubber layer; 21-pressing edge; 22-longitudinal hydraulic drive unit; 23-an optical slide sheet; 24-a valve drive unit; 25-a silica gel sucker; 26-edge guide notch; 27-reinforcing screws.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Example one
Referring to fig. 1, 4 and 5, the first servo driving device 8 can drive the PCB 5 for testing to adjust the position thereof, so as to adapt to the sizes of LCD glass with various specifications. The longitudinal servo driving device 10 drives the bearing base plate 11 to move up and down, and the LCD glass with the suitable parameter range is matched with the PCB 5 upwards.
The PCB board 5 is provided with a plurality of sets of contacts, each set of contacts has a different PITCH, as shown in fig. 5, the PITCH may be 1.27mm, 1.50mm, 1.80mm, 2.00mm, 2.54mm, etc. The testing equipment can electrically test the LCD glass by adjusting the distance between the two PCB plates 5 through the tracks aiming at various sizes of glass; the single-side PIN outlet or the double-side PIN outlet can be electrically measured; the PCB position can be changed for different PITCH LCDs; meanwhile, the first servo driving device 8 can directly adjust the position of the PCB 5 on the positioning track. The backlight plate is added on the PCB, so that the negative display product can clearly display patterns, and the PCB can be made for more PITCHs to electrically measure more types of LCD glass in the later period.
Example two
Referring to fig. 1, 2 and 3, a plurality of horizontal hydraulic driving units 16 are arranged on the lower side surface of the bearing base plate 11, the horizontal hydraulic driving units 16 drive the displacement adjusting rods 17 to drive the fine adjustment positioning mechanism 18 to move in position on the extension guide support 13, a positioning induction pressing strip 19 is arranged in the fine adjustment positioning mechanism 18, a pressing edge 21 is arranged at the lower end of the positioning induction pressing strip 19, the pressing edge 21 is in contact with an edge generated between the linear pressure sensing strip 15, and the pressing edge 21 and the inner hard rubber layer 20 are located on the same vertical surface, so that the linear pressure sensing strip 15 accurately detects the position point of the inner vertical surface of the fine adjustment positioning mechanism 18.
EXAMPLE III
Referring to fig. 1, 6 and 7, the entire bearing base plate 11 is a square frame structure, a diagonal supporting plate is arranged inside the bearing base plate 11, a middle groove body is used for installing a lifting shaft rod of the longitudinal servo driving device 10, the peripheral middle position of each edge of the bearing base plate 11 is vertically and fixedly connected with an extension guide bracket 13, an upper guide groove 14 is formed in the extension guide bracket 13, and a linear pressure sensing strip 15 is arranged in the upper guide groove 14.
Before the PCB test of the LCD glass is carried out, the extrusion contact degree between the pressing edge 21 and the linear pressure sensing strip 15 needs to be debugged, so that the friction resistance between each micro-adjusting positioning mechanism 18 and the extension guide support 13 is the same, when the horizontal hydraulic driving unit 16 carries out driving adjustment, the smoothness and the synchronism of the whole LCD glass are better when the whole LCD glass moves forwards, backwards, leftwards and rightwards, the influence of different forces on each edge of the LCD glass is reduced, and a dynamic protection mechanism is formed on the LCD glass for test adjustment.
When the LCD glass is placed on the bearing base plate 11, all the fine adjustment positioning mechanisms 18 are located at the farthest ends of the extension guide supports 13, the longitudinal hydraulic driving units 22 also pre-adjust the optical slip sheets 23 to the upper limit height, after the LCD glass is placed, the control system starts to operate, the plurality of horizontal hydraulic driving units 16 start to adjust the positions of the fine adjustment positioning mechanisms 18 according to the driving parameters of the control system, and the position adjustment of the fine adjustment positioning mechanisms 18 is actually the pressure sensing cooperation of the pressing edge 21 at the lower end of the positioning sensing pressing strip 19 and the linear pressure sensing strip 15.
Example four
Based on the third embodiment, in the process of adjusting the degree of pressing contact between the pressing edge 21 and the linear pressure sensor strip 15, the upper installation guide block 182 may be clamped by a linear hydraulically-adjusted manipulator (as shown in fig. 7, the upper installation guide block 182 is provided with a clampable empty slot position and a middle vertical plate), the manipulator drives the upper installation guide block 182 to ascend and then start to linearly descend, when the linear pressure sensor strip 15 triggers a pressure signal, it indicates that the pressing edge 21 starts to contact the linear pressure sensor strip 15, and after a very short driving time, the manipulator positions the upper installation guide block 182, and then screws the reinforcing screw 27 on the lower support guide block 181.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. General type LCD dress PIN test PCB equipment, including PCB bed frame (1), its characterized in that:
the PCB comprises a PCB base frame (1), two PCB boards (5) which move horizontally are arranged on the upper portion of the PCB base frame (1), the two PCB boards (5) are arranged in a mirror symmetry mode, first servo driving devices (8) used for driving the PCB boards (5) to move horizontally are arranged on two end sides of the PCB base frame (1) in a mirror symmetry mode, a butt PIN contact (6) and a testing adapter (7) are arranged on the PCB boards (5), and a plurality of zebra stripe electrodes are arranged on the lower side face of the PCB boards (5);
a longitudinal servo driving device (10) is arranged at the bottom of the PCB base frame (1), a bearing base disc (11) is connected above the longitudinal servo driving device (10) in a lifting driving mode, a plurality of uniformly distributed extension guide supports (13) are fixedly connected to the annular side of the bearing base disc (11), an upper side guide groove (14) is formed in the upper side of each extension guide support (13), and linear pressure sensing strips (15) are embedded into the upper side guide grooves (14) of the extension guide supports (13);
the lower side surface of the bearing base plate (11) is provided with a plurality of horizontal hydraulic driving units (16) matched with the positions of the extension guide supports (13), one side of each horizontal hydraulic driving unit (16) is connected with a fine adjustment positioning mechanism (18) in a hydraulic driving mode, the fine adjustment positioning mechanisms (18) are installed on the extension guide supports (13) in a guiding mode, the fine adjustment positioning mechanisms (18) are provided with positioning induction pressing strips (19), and one side ends of the positioning induction pressing strips (19) are provided with pressing edges (21) matched with the linear pressure sensing strips (15) in a contact mode;
a plurality of longitudinal hydraulic driving units (22) which are distributed in a staggered manner with the horizontal hydraulic driving units (16) are arranged on the lower side of the bearing base disc (11), the output shafts of the longitudinal hydraulic driving units (22) upwards penetrate through the bearing base disc (11) in a movable manner, and optical sliding sheets (23) located above the bearing base disc (11) are arranged at the upper ends of the output shafts of the longitudinal hydraulic driving units (22);
the downside of PCB bed frame (1) disposes a plurality of valve drive unit (24), the side embedding of going up of PCB bed frame (1) is provided with silica gel sucking disc (25) of being connected with valve drive unit (24).
2. The universal LCD-mounted PIN test PCB apparatus of claim 1, wherein:
PITCH between a plurality of zebra stripe electrodes on the lower side surface of the PCB (5) is sequentially increased from front to back and from left to right.
3. The universal LCD-mounted PIN test PCB apparatus of claim 1, wherein:
the upper part of the PCB base frame (1) is provided with a movable guide groove (2), the movable guide groove (2) of the PCB base frame (1) is provided with a support shaft lever (4) for guiding and supporting a PCB (5), and two ends of the support shaft lever (4) are provided with roller body structures (3);
the first servo driving device (8) is provided with an inward first telescopic shaft rod (9), and the end side of the first telescopic shaft rod (9) is fixedly connected with the PCB (5).
4. The universal LCD-mounted PIN test PCB apparatus of claim 1, wherein:
the horizontal hydraulic driving unit (16) is provided with a displacement adjusting rod (17) along the outward expansion direction of the extension guide bracket (13), and the micro-adjustment positioning mechanism (18) is fixedly arranged at the end side of the displacement adjusting rod (17);
the edge side of the upper side face of the optical slip sheet (23) is of a round angle structure.
5. The universal LCD-mounted PIN test PCB apparatus of claim 1, wherein:
the horizontal height of the upper side of the linear pressure sensing strip (15) is lower than that of the upper side of the extension guide bracket (13);
the positioning induction batten (19) is of a folded structure, the horizontal strip of the positioning induction batten (19) is an elastic material body, and the horizontal height position of the upper side of the horizontal strip of the positioning induction batten (19) is lower than that of the upper side of the extension guide support (13).
6. The universal LCD-mounted PIN test PCB apparatus of claim 1, wherein:
a position coding module is configured in the longitudinal hydraulic driving unit (22), the upper limit position point of the longitudinal hydraulic driving unit (22) for driving the smooth sheet (23) to rise is higher than the upper side height of the silica gel sucker (25) in a normal state, and the lower limit position point of the longitudinal hydraulic driving unit (22) for driving the smooth sheet (23) to fall is lower than the upper side height of the silica gel sucker (25) in an adsorption state.
7. The universal LCD-mounted PIN test PCB apparatus of claim 1, wherein:
the valve drive unit (24) is located between the horizontal hydraulic drive unit (16) and the longitudinal hydraulic drive unit (22);
the plurality of valve driving units (24) are connected with the same air pressure control device, the plurality of longitudinal hydraulic driving units (22) are connected with the same hydraulic control device, and the plurality of horizontal hydraulic driving units (16) are connected with independent hydraulic control devices or different controllable output ports of the same hydraulic control device.
8. The universal LCD-mounted PIN test PCB apparatus of claim 1, wherein:
the micro-adjustment positioning mechanism (18) comprises a lower support guide block (181) and an upper installation guide block (182);
the upper side surface of the lower support guide block (181) is provided with two longitudinal lower adjusting holes (1811), and one side surface of the lower support guide block (181) is provided with a front side screw hole (1812) vertically communicated with the lower adjusting holes (1811);
a group of edge position guide notches (26) are formed in the edge of the upper side of the extension guide support (13), and the upper part of the lower support guide block (181) is clamped and installed at the position of the edge position guide notches (26) of the extension guide support (13);
the positioning induction batten (19) is fixedly installed on the upper installation guide block (182), two longitudinal fine adjustment rods (1821) are arranged on the lower side surface of the upper installation guide block (182), the longitudinal fine adjustment rods (1821) are inserted into lower adjustment holes (1811) of the lower support guide block in a matched mode, and reinforcing screws (27) used for positioning and reinforcing the longitudinal fine adjustment rods (1821) are installed on front side screw holes (1812) of the lower support guide block (181);
and a hard rubber layer (20) contacted with the side of the LCD glass is arranged on one side of the upper mounting guide block (182), and a pressing edge (21) of the positioning induction pressing strip (19) and the outer side surface of the hard rubber layer (20) are positioned in the same vertical plane.
The test regulation and control method for the LCD-mounted PIN test PCB device, which is characterized in that the universal type LCD-mounted PIN test PCB device of any one of claims 1 to 8 is adopted, and comprises the following contents:
(1) initial commissioning of the positioning induction batten (19): opening a control system, drawing the upper installation guide block (182) upwards for a certain distance from the lower support guide block (181), linearly adjusting the upper installation guide block (182) downwards after the linear pressure sensing strip (15) cannot detect a pressure signal, immediately stopping adjusting the upper installation guide block (182) downwards when the linear pressure sensing strip (15) generates the pressure signal, and screwing a reinforcing screw to finish the initial induction contact debugging of the pressure applying edge (21) at the lower side of the positioning induction pressing strip (19) and the linear pressure sensing strip (15);
(2) according to the specification and model of the LCD to be tested, the control system sends an adjusting signal to the first servo driving device (8), and the first servo driving device (8) adjusts the horizontal positions of the two PCB boards (5);
(3) the control system drives all horizontal hydraulic drive units (16) and longitudinal hydraulic drive units (22) on the bearing base plate (11), the horizontal hydraulic drive units (16) drive the micro-adjustment positioning mechanisms (18) connected with the horizontal hydraulic drive units to move outwards to the outermost end limit points, and the longitudinal hydraulic drive units (22) drive the smooth sheets (23) connected with the horizontal hydraulic drive units to move upwards to the upper limit points;
(4) the method comprises the following steps that LCD glass is placed on a bearing base plate (11), the LCD is placed in a reverse direction, one side to be detected faces upwards, a control system sends out a parameter signal of a testing area range matched with the current LCD glass, and each independent horizontal hydraulic driving unit (16) linearly and independently changes the position of a fine adjustment positioning mechanism (18) until a linear pressure sensing strip (15) on each extension guide support (13) detects that a pressing edge (21) of a positioning sensing pressing strip (19) reaches a corresponding parameter position point;
(5) all the horizontal hydraulic driving units (16) drive the micro-adjustment positioning mechanisms (18) connected with the horizontal hydraulic driving units to move outwards for a certain distance, LCD glass adjusted in the horizontal position is separated from clamping of the micro-adjustment positioning mechanisms (18), the longitudinal hydraulic driving units (22) drive the smooth sheets (23) connected with the horizontal hydraulic driving units to move downwards to lower limit points, the LCD glass is in contact with silica gel suckers (25) on the bearing base plate (11), all the valve driving units (24) act to conduct negative pressure adsorption clamping on the LCD glass, and the longitudinal servo driving device (10) drives the bearing base plate (11) and the LCD glass to move upwards at fixed points to be matched with the two PCB plates (5) for testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111179525.2A CN114049858B (en) | 2021-10-09 | 2021-10-09 | Test regulation and control method for universal type LCD (liquid Crystal display) PIN (personal identification number) test PCB (printed circuit board) equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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| CN115016182A (en) * | 2022-06-06 | 2022-09-06 | 郴州恒维电子有限公司 | Glue sealing method for foot-mounted product |
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| CN114049858B (en) | 2024-03-29 |
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