CN111473954A

CN111473954A - Test fixture for L CD

Info

Publication number: CN111473954A
Application number: CN202010426374.5A
Authority: CN
Inventors: 刘龙威
Original assignee: Hefei Meiming Electronic Technology Co ltd
Current assignee: Hefei Meiming Electronic Technology Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-07-31

Abstract

The invention provides a test fixture for L CD, which comprises a bottom plate, side supporting frames, supporting rods, gears, one-way bearings, racks, a connecting frame, a belt transmission assembly, a screw rod, a transmission frame, a hollow support, an air pump, a motor, an X-Y driving mechanism and an optical probe, wherein the two side supporting frames are movably arranged on the bottom plate through the supporting rods, the gears are fixedly sleeved on the power output end of the motor through the one-way bearings, the two racks are respectively meshed with the gears, the racks are respectively and fixedly connected with the supporting rods through the connecting frame, the screw rod is in power connection with the motor, the transmission frame is arranged on the side supporting frames in a matched mode, thread transmission is formed between the screw rod and the transmission frame, the hollow support is arranged at the center of the bottom plate in a penetrating mode, three positions of the L CD assembly are supported through distance adjustment between the telescopic side supporting frames and the side supporting frames, further, supporting test can be carried out when L CD faces to a curved surface, and positive.

Description

Test fixture for L CD

Technical Field

The invention relates to the technical field of test fixtures, in particular to a test fixture for L CD.

Background

With the rapid development of display-related electronic products such as smart phones, tablet computers, notebooks, high-definition televisions, smart watches and the like, the demand of the market for display screen modules is also increasing dramatically, which also puts higher requirements on the product productivity, the yield and the like of display screen manufacturers, and the service life of L CD as an important index of the display screen modules needs to be tested emphatically.

Publication No. CN209544397U provides a O L ED display screen life-span test fixture, and this device passes through actuating mechanism drive L type stopper and moves, and then carries out spacingly to the display screen, utilizes optical probe to detect afterwards, but follows up with the more and more curved surface screen of market demand and should transport and come into fact, and above-mentioned prior art is only fit for carrying out spacing test to planar display screen.

Disclosure of Invention

The present invention is directed to a testing fixture for L CD, so as to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a test fixture for L CD, includes bottom plate, side support frame, bracing piece, gear, one-way bearing, rack, link, takes drive assembly, lead screw, driving frame, hollow support, air pump, motor, X-Y actuating mechanism and optical probe, X-Y actuating mechanism installs the top at the bottom plate through the supporting leg, and the bottom of X-Y actuating mechanism's power take off part is equipped with optical probe for drive optical probe is at X-Y planar motion, wherein:

the two side supporting frames are oppositely arranged, supporting rods are respectively and movably arranged in sleeves at the lower sides of the side supporting frames, the supporting rods in the side supporting frames are respectively and movably arranged in guide grooves on the bottom plate, the motor is arranged at the center of the bottom plate through bolts, the gear is fixedly sleeved at the power output end of the motor through a one-way bearing, the two racks are respectively positioned at the bottom of the bottom plate and are respectively meshed with the gear, the two racks are respectively and fixedly connected with one supporting rod in the two side supporting frames through a connecting frame, the screw rod is arranged on the bottom plate through a bearing and is in power connection with the motor through a belt transmission assembly, the two ends of the transmission frame are matched and arranged in the guide grooves which are transversely arranged at the outer sides of the side supporting frames, the screw rod penetrates through the transmission frame and forms thread transmission with the transmission frame, and, and the air pump is communicated with the hollow bracket.

Preferably, the belt transmission assembly comprises a large belt wheel, a small belt wheel and a belt, the large belt wheel is fixedly sleeved on the power output end of the motor through a one-way bearing, the small belt wheel is fixedly sleeved on the end portion of the screw rod, and the belt is sleeved on the large belt wheel and the small belt wheel.

Preferably, the one-way bearing in the large pulley and the one-way bearing in the gear are installed in opposite directions.

Preferably, the end part of the hollow support is provided with a sucker, wherein the sucker is communicated with the hollow support.

Preferably, the X-Y driving mechanism consists of linear motion mechanisms which are arranged perpendicularly to each other.

Compared with the prior art, the invention has the beneficial effects that:

the L CD component is supported at three positions by adjusting the distance between the telescopic side supporting frames and the side supporting frames, so that the supporting test can be carried out when the side supporting frames face L CD with curved surfaces, and the buffer can be effectively buffered when L CD falls into the hollow support by introducing positive pressure into the hollow support.

Drawings

FIG. 1 is a three-dimensional schematic of the overall structure of the present invention;

FIG. 2 is a cross-sectional view of the overall structure of the present invention;

fig. 3 is a side view of the overall structure of the present invention.

In the figure: the device comprises a base plate 1, a side supporting frame 2, a supporting rod 3, a gear 4, a one-way bearing 5, a rack 6, a connecting frame 7, a belt transmission assembly 8, a screw rod 9, a transmission frame 10, a hollow support 11, an air pump 12, a motor 13, a 14X-Y driving mechanism, an optical probe 15, a large belt wheel 81, a small belt wheel 82, a belt 83 and a sucking disc 111.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example (b):

referring to fig. 1 to 3, the present invention provides a technical solution:

the utility model provides a test fixture for L CD, includes bottom plate 1, side support frame 2, bracing piece 3, gear 4, one-way bearing 5, rack 6, link 7, belt drive assembly 8, lead screw 9, driving frame 10, hollow support 11, air pump 12, motor 13, X-Y actuating mechanism 14 and optical probe 15, wherein:

the two side supporting frames 2 are oppositely arranged, wherein the supporting rods 3 are respectively and movably arranged in sleeves at the lower sides of the side supporting frames 2, the supporting rods 3 in the side supporting frames 2 are respectively and movably arranged in guide grooves on the bottom plate 1, so that the side supporting frames 2 can be close to or away from each other and the distance between the side supporting frames 2 and the bottom plate 1 can be adjusted, the motor 13 is arranged at the center of the bottom plate 1 through bolts, the gear 4 is fixedly sleeved at the power output end of the motor 13 through a one-way bearing 5, the two racks 6 are respectively positioned at the bottom of the bottom plate 1 and are respectively meshed with the gear 4, wherein the two racks 6 are respectively and fixedly connected with one supporting rod 3 in the two side supporting frames 2 through the connecting frame 7, so that the two racks 6 move towards opposite directions when the gear 4 rotates, and further the racks 6 drive the, the screw rod 9 is mounted on the bottom plate 1 through a bearing and is in power connection with the motor 13 through a belt transmission assembly 8, wherein the belt transmission assembly 8 comprises a large belt wheel 81, a small belt wheel 82 and a belt 83, the large belt wheel 81 is fixedly sleeved on the power output end of the motor 13 through a one-way bearing 5, the small belt wheel 82 is fixedly sleeved on the end part of the screw rod 9, the belt 83 is sleeved on the large belt wheel 81 and the small belt wheel 82, the mounting directions of the one-way bearing 5 in the large belt wheel 81 and the one-way bearing 5 in the gear 4 are opposite, so that the one-way bearing 5 in the gear 4 is in a locking state and the gear 4 rotates along with the motor 13 when the motor 13 rotates forwards, and the one-way bearing 5 in the large belt wheel 81 is in the locking state and the large belt wheel 81 rotates along with the motor 13 when the motor 13 rotates backwards, therefore the motor 13 enables the side support frame 2 to have two motion states when, the two ends of the transmission frame 10 are arranged in the guide grooves which are transversely arranged on the outer sides of the side support frames 2 in a matched mode, therefore, when the side support frames 2 are close to or far away from each other, the transmission frame 10 cannot generate motion interference, and the transmission frame 10 can drive the side support frames 2 to rise or fall along the support rods 3 when rising or falling, wherein the screw rod 9 penetrates through the transmission frame 10 and forms thread transmission with the transmission frame 10, the hollow support 11 is arranged at the center of the bottom plate 1 through a bolt, the air pump 12 is fixedly arranged on the bottom plate 1 through a bolt, wherein the air pump 12 is communicated with the hollow support 11 through a connecting pipe, the end part of the hollow support 11 is provided with a sucker 111, and the sucker 111 is communicated with;

the X-Y driving mechanism 14 is arranged above the bottom plate 1 through supporting legs, the X-Y driving mechanism 14 is composed of linear motion mechanisms which are perpendicular to each other, an optical probe 15 is arranged at the bottom of a power output part of the X-Y driving mechanism 14, and then the X-Y driving mechanism 14 can drive the optical probe 15 to move on an X-Y plane to achieve a testing effect.

The working principle of the invention is that when a service life test is carried out on a L CD with a curved surface, firstly, positive air pressure is introduced into the hollow bracket 11 by the air pump 12, then the suction cup 111 on the hollow bracket 11 blows air outwards, rigid impact with the suction cup 111 can be avoided when the L CD with the curved surface is placed on the suction cup 111 at the moment, and a buffering effect is effectively realized, then when the air pump 12 stops air inflow into the hollow bracket 11, the suction cup 111 preliminarily limits the L CD with the curved surface, then the motor 13 rotates forwards, at the moment, the one-way bearing 5 in the gear 4 is in a locking state, the gear 4 rotates along with the motor 13, then the gear 4 drives the two racks 6 to do linear motion, the two racks 6 respectively drive the supporting rod 3 in the side supporting frame 2 to move, at the moment, the two side supporting frames 2 move towards the mutually approaching direction, when the side supporting frame 2 moves to be under the L CD with the curved surface, the one-way that the one-way bearing 5 in the large belt pulley 81 is in the locking state, then rotates along with the supporting rod 359 CD, then the CD 13 rotates, then the CD 2 is driven by the air pressure transmission wheel 83, when the CD supporting frame 2 moves to be in the direction of the curved surface 359 CD 3514, then the CD 2, the CD 13 is lifted from the CD 2, the CD 2 is lifted test is lifted from the CD 2, the CD with the CD 2, the CD 13.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a test fixture for L CD, includes bottom plate (1), side support frame (2), bracing piece (3), gear (4), one-way bearing (5), rack (6), link (7), area drive assembly (8), lead screw (9), transmission frame (10), hollow support (11), air pump (12), motor (13), X-Y actuating mechanism (14) and optical probe (15), X-Y actuating mechanism (14) are installed in the top of bottom plate (1) through the supporting leg, and the bottom of the power take off part of X-Y actuating mechanism (14) is equipped with optical probe (15) for drive optical probe (15) are at X-Y planar motion, its characterized in that:

the two side supporting frames (2) are oppositely arranged, wherein supporting rods (3) are respectively and movably arranged in sleeves on the lower sides of the side supporting frames (2), the supporting rods (3) in the side supporting frames (2) are respectively and movably arranged in guide grooves on the bottom plate (1), the motor (13) is arranged at the center of the bottom plate (1) through bolts, the gear (4) is fixedly sleeved at the power output end of the motor (13) through a one-way bearing (5), the two racks (6) are respectively positioned at the bottom of the bottom plate (1) and are respectively meshed with the gear (4), the two racks (6) are respectively and fixedly connected with one supporting rod (3) in the two side supporting frames (2) through a connecting frame (7), the screw rod (9) is arranged on the bottom plate (1) through a bearing and is in power connection with the motor (13) through a belt transmission assembly (8), the both ends cooperation of driving frame (10) is installed in the guide slot that is horizontal setting in side support frame (2) outside, and lead screw (9) run through driving frame (10) and with driving frame (10) between form the screw drive, hollow support (11) are installed in the center department of bottom plate (1) through the bolt, and air pump (12) and hollow support (11) intercommunication.

2. The L CD testing jig is characterized in that the belt transmission assembly (8) comprises a large belt wheel (81), a small belt wheel (82) and a belt (83), the large belt wheel (81) is fixedly sleeved on the power output end of the motor (13) through a one-way bearing (5), the small belt wheel (82) is fixedly sleeved on the end portion of the screw rod (9), and the belt (83) is sleeved on the large belt wheel (81) and the small belt wheel (82).

3. The test fixture for L CD according to claim 1, wherein the one-way bearing (5) in the large pulley (81) and the one-way bearing (5) in the gear (4) are installed in opposite directions.

4. The L CD test fixture according to claim 1, wherein the hollow holder (11) has a suction cup (111) at an end thereof, wherein the suction cup (111) is in communication with the hollow holder (11).

5. The test fixture for L CD of claim 1, wherein the X-Y driving mechanism (14) comprises linear motion mechanisms disposed perpendicular to each other.