CN201955063U - Automatic optical measurement instrument for liquid crystal display - Google Patents

Abstract

The utility model discloses a measuring instrument, which provides an automatic optical measuring instrument for liquid crystal displays with simple structure, ingenious conception, accurate positioning and convenient and fast clamping, which solves the problem of liquid crystal displays to be measured in the prior art. The clamping and fixing process is cumbersome and the positioning accuracy is poor, which leads to technical problems such as low detection efficiency and decreased measurement accuracy. It includes the working platform and the tester that can move along the X-axis direction, Y-axis direction and Z-axis direction on the working platform. , a rotary platform that can rotate along the Y axis is also provided on the working platform, a clamp body that can rotate along the horizontal axis is provided on the rotary platform, and a clamp body for clamping the zero to be measured is provided on the clamp body. Several stops for components.

Description

An automatic optical measuring instrument for liquid crystal display

technical field

The utility model relates to a measuring instrument, in particular to an automatic optical measuring instrument for detecting liquid crystal displays with accurate positioning and convenient and quick clamping.

Background technique

In the prior art, the precise measurement of variable cross-section parts usually adopts three-coordinate measurement, which determines the position of the spatial point through the probe moving in the Cartesian coordinate system. When the probe touches the measured part , the probe is forced and triggers the measuring machine to record the three coordinate information of the current point. This method has high measurement accuracy and is not limited by the shape of the measured component, so it is widely used in industrial measurement. However, it often has high requirements on the surrounding environment, and there is often no special fixture on the device, so the clamping and positioning process is cumbersome, especially for testing liquid crystal displays, resulting in long measurement cycles, low efficiency, high cost, and difficulty in adapting to large quantities. parts inspection.

Chinese patent discloses an optical non-contact three-dimensional shape measuring instrument (CN101086442A), which relates to a method of measuring the cross-sectional shape of an object with variable cross-sectional thickness by using laser technology, including a frame and an adjustable measuring device located at the center of the front part of the frame. The two-dimensional mobile platform adjusted in the X-axis and Y-axis directions and the crossbeam arranged at the rear of the two-dimensional mobile platform, the two side walls of the crossbeam are oppositely provided with line laser light source parts, and the two beams are fixedly connected A long object distance optical imaging part, the optical axis of which forms a symmetrical angle with the optical axis of the line laser light source part and is on the same plane. This device is an optical measuring instrument, so it has low requirements on the surrounding environment, and has the advantages of wide application range and high measurement accuracy. Technical problems such as decreased accuracy are also not applicable to the detection of liquid crystal displays.

Contents of the invention

The utility model mainly provides an automatic optical measuring instrument for liquid crystal displays with simple structure, ingenious conception, accurate positioning and convenient and fast clamping, which solves the cumbersome process of clamping and fixing liquid crystal displays to be measured in the prior art. , The positioning accuracy is poor, which leads to technical problems such as low detection efficiency and decreased measurement accuracy.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: an automatic optical measuring instrument for liquid crystal displays, including a working platform and a The moving tester is also provided with a rotary platform that can rotate along the Y axis on the working platform, and a clamp body that can rotate along the horizontal axis is provided on the rotary platform, and a clamp body for clamping is provided on the clamp body. Several stops holding the component to be tested. By setting the stopper on the clamp body, the parts to be tested can be clamped by sliding the stopper during the test, the parts to be tested are positioned accurately, the assembly and disassembly process is highly automated, the operation is time-saving and labor-saving, and the work efficiency is improved; The clamp body is fixed on the rotating platform and can rotate along the horizontal axis. The rotating platform is set on the working platform and can rotate along the Y axis, so that the parts to be tested can be rotated to any angle for positioning according to the detection requirements, and the clamping is convenient and fast. , The detection process is not limited by the structure and shape of the workpiece, the test range is wide, the overall structure is simple, and the concept is ingenious.

Preferably, the rotating platform includes a base fixed on the working platform, the base is rotatably connected with a vertical drive shaft through a thrust self-aligning bearing and a tapered roller bearing, and a fixed plate is coaxially arranged on the vertical drive shaft, The upper end of the vertical drive shaft is connected with the clamp body through the fixed disk, and the lower end of the vertical drive shaft is connected with the driving device. Thrust self-aligning bearings and tapered roller bearings are used to carry the axial load and radial load of the clamp body, thereby reducing the force and motion wear of the transmission pair, improving the rotational bearing performance of the rotating platform, and avoiding the stress of the transmission pair. The frictional noise caused by force and movement wear and the unevenness of movement make the rotating platform have high rotation precision, good movement stability, high safety factor, and prolong its service life.

As more preferably, the thrust self-aligning bearing and the tapered roller bearing are coaxially embedded between the positioning plate and the transition shaft, the positioning plate is fixed on the base, and the lower end of the transition shaft is connected to the vertical drive through a coupling The rotating shafts are connected, and the upper end of the transition shaft is connected with the fixed disk. The thrust self-aligning bearing and tapered roller bearing are embedded in the positioning plate and the transition shaft, the structure is simple, and the installation and adjustment of the bearing are convenient.

More preferably, the fixed disk is disc-shaped, and several positioning holes corresponding to the clip body are provided on the fixed disk, and the positioning holes are evenly distributed in the circumferential direction along the central axis of the fixed disk. Positioning holes are provided on the fixing plate to facilitate the fixing of the clip body.

As a preference, the clamp body includes a U-shaped bracket whose opening is fixed upward on the rotating platform, and a horizontal shaft is rotatably connected between the openings of the U-shaped bracket, and a horizontal shaft that can rotate synchronously with the horizontal shaft is fixed on the horizontal shaft. The positioning disc is clamped, and the stopper is slidably connected to the positioning disc. The horizontal rotating shaft is fixed by a U-shaped bracket, and the clamping positioning plate is supported by the horizontal rotating shaft and drives the supporting clamping positioning plate to rotate, so that the clamping positioning plate drives the parts to be tested to rotate 360° along the horizontal rotating shaft. The structure is simple and firm.

As a preference, the clamping positioning plate is a rectangular fixed plate, the short side of the clamping positioning plate is vertically connected to the horizontal rotating shaft and is symmetrically distributed relative to the horizontal rotating shaft, and a pair of mutually parallel positioning plates are arranged on the clamping positioning plate A vertical two-way screw rod, sliders are screwed at both ends of the vertical two-way screw rod, and a horizontal two-way screw rod perpendicular to the vertical two-way screw rod is horizontally connected between the two corresponding sliders. The stopper is symmetrically screwed on the horizontal two-way screw rod, and the drive motors are respectively connected to the vertical two-way screw rod and the horizontal two-way screw rod. By setting a pair of vertical two-way screw rods parallel to each other on the clamping positioning plate, and setting a pair of horizontal two-way screw rods parallel to each other between the two vertical two-way screw rods, the stopper is symmetrically screwed on the horizontal two-way screw rod At both ends, the vertical two-way screw rod can be driven to drive the horizontal two-way screw rod to move inward or outward at the same time, or the stopper can be driven inward or outward by driving the horizontal two-way screw rod, thus realizing clamping and unclamping The process is convenient and fast. The vertical two-way screw rod and the horizontal two-way screw rod are driven by the drive motor. The degree of mechanization is high, and the operation saves time and effort.

More preferably, a linear guide rail is provided parallel to the inner side of the vertical two-way screw rods, and the linear guide rails are symmetrically distributed between the two vertical two-way screw rods, and the slider is slidably connected to the corresponding linear guide rails. By setting linear guide rails in parallel on the side of the vertical two-way screw rod, the displacement accuracy of the horizontal two-way screw rod can be improved to ensure accurate positioning of the parts to be tested.

More preferably, several fixing holes are provided on the clamping positioning plate, and the fixing holes are evenly distributed on the surface of the clamping positioning plate. By providing a plurality of fixing holes on the clamping positioning plate, it is convenient to fix components with pins such as circuit boards on the clamping positioning plate.

Preferably, a "V" shape is formed between adjacent surfaces of the stopper, and a protective layer is provided on the adjacent surfaces. The "V" shape formed between the two blocks is used to clamp the fixed parts, which can prevent the parts to be tested from moving up and down and ensure the accurate positioning of the parts to be tested; by setting a protective layer on the clamping surface of the blocks, prevent The surface of the stopper is worn, extending its service life.

Preferably, a support frame of a frame structure is provided under the working platform, and rollers are provided at the bottom of the support frame. The supporting frame of the frame structure has high strength and light weight; rollers are arranged at the bottom of the supporting frame to facilitate the movement and handling of the device.

Therefore, a kind of automatic optical measuring instrument that is used for liquid crystal display of the present utility model has the following advantages: by arranging rotating platform on working platform, setting clamping body clamping liquid crystal display to be measured again on rotating platform, clamping body and It can be rotated along the horizontal axis, the positioning of the liquid crystal display to be tested is accurate, the clamping is time-saving, labor-saving, convenient and fast, and the detection efficiency is high; the clamp body can hold the liquid crystal display to be tested and rotate to any angle for positioning, so that it can be fixed at will according to the detection needs The liquid crystal display is tested, so the detection process is not limited by the structure and shape of the workpiece, the application range is wide, and the structure is simple; the stopper is controlled by a two-way screw rod to move inward or outward at the same time to clamp the liquid crystal display to be tested, which is convenient, quick and ingenious.

Description of drawings:

Fig. 1 is a kind of automatic optical measuring instrument structure schematic diagram that is used for liquid crystal display of the present utility model;

Fig. 2 is the structural representation of rotating platform;

Fig. 3 is a longitudinal sectional view shown in Fig. 2;

Fig. 4 is the structural representation of folder body;

Fig. 5 is an enlarged view of the stopper.

Detailed ways:

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Example:

As shown in Figure 1, a kind of automatic optical measuring instrument used for liquid crystal display of the present utility model comprises the working platform 1 that is made of marble, and working platform 1 is placed flatly on the supporting frame 6 of frame structure, on supporting frame 6 Six rollers 7 are installed on the bottom frame of the frame, and a tester 2 that can move along the X-axis, Y-axis and Z-axis is installed above the working platform 1, wherein the tester 2 is an optical tester, and the tester 2 above the working platform 1 One end is also fixed with a rotating platform 3 that can rotate along the longitudinal Y-axis direction, as shown in Figure 2 and Figure 3, the rotating platform 3 includes a base 31 fixed on the working platform 1 by bolts, and the base 31 is passed through a thrust self-aligning bearing 32 and tapered roller bearing 35 are rotatably connected to a vertical drive shaft 33, thrust self-aligning bearing 32 and tapered roller bearing 35 are coaxially embedded between positioning disc 38 and transition shaft 36, wherein positioning disc 38 is outside and passes through Bolts are fixed on the base 31, the transition shaft 36 is inside and its lower end is connected with the vertical drive shaft 33 through a coupling 37, the upper end is coaxially keyed to a disc-shaped fixed plate 34, and the lower end of the vertical drive shaft 33 is connected to the geared motor Connected to each other, on the fixed disk 34, there are several positioning holes 341 uniformly distributed along the central axis of the fixed disk 34 in its circumferential direction, and a clamp body 4 that can rotate along the horizontal axis is housed on the fixed disk 34, as shown in Figure 4 Shown, clamping body 4 comprises a U-shaped support 42, and U-shaped support 42 openings are upwardly fixed on the fixed plate 34, and a horizontal shaft 43 is connected by bearing rotation between the openings of U-shaped support 42, and a horizontal shaft 43 is fixed on the horizontal shaft 43. The clamping positioning disc 44, which can rotate synchronously with the horizontal rotating shaft 43, is slidably connected to four stoppers 41 for clamping parts to be tested on the clamping positioning disc 44, wherein the clamping positioning disc 44 is equipped with several The rectangular fixing plate of fixing hole 49, and fixing hole 49 is evenly distributed on the surface of clamping positioning disc 44, and the short side of clamping positioning disc 44 is vertically connected with horizontal rotating shaft 43 and is symmetrically distributed relative to horizontal rotating shaft 43, in clamping positioning disc A pair of vertical two-way screw mandrels 45 parallel to each other are fixed on the surface of one side of 44, and a linear guide rail 48 and two linear guide rails 48 are fixed in parallel on the surface of the clamping positioning plate 44 near the inside of the vertical two-way screw mandrel 45. Symmetrically distributed between the two vertical two-way screw rods 45, a slider 46 is respectively screwed on the two ends of the vertical two-way screw rods 45, and the inner side end of the slider 46 is slidably connected to the corresponding linear guide rail 48. A horizontal two-way screw mandrel 47 is connected horizontally between the two slide blocks 46 respectively, the horizontal two-way screw mandrel 47 is perpendicular to the vertical two-way screw mandrel 45, and four stoppers 41 are symmetrically screwed on the horizontal two-way screw mandrel 47, vertical One end of the straight two-way screw mandrel 45 and the horizontal two-way screw mandrel 47 is respectively connected to a reduction motor, as shown in Figure 5, forms a "V" shape between the adjacent faces of the four stoppers 41, and is covered with a Layer 5 is a protective layer made of Teflon.

During use, start two vertical two-way screw mandrels 45 and the reduction motors on the horizontal two-way screw mandrel 47, the vertical two-way screw mandrel 45 and the horizontal two-way screw mandrel 47 rotate and drive four blocks 41 to move outwards simultaneously, then will be tested The liquid crystal display is placed between the four stoppers 41, and then the reduction motor is started to make the two vertical two-way screw rods 45 and the horizontal two-way screw mandrels 47 reversely rotate. Rotate the platform 3 and rotate the clamp body 4 around the horizontal rotating shaft 43, so that the liquid crystal display to be tested is fixed in a suitable position, and finally adjust the position of the tester 2 along the X, Y and Z axis directions to perform the measurement.

The specific embodiments described herein are only examples to illustrate the concept of the present utility model. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (10)

1. automatic optical measurement instrument that is used for LCD, comprise on workbench (1) and the workbench (1) tester (2) that can move along X-direction, Y direction and Z-direction, it is characterized in that: also being provided with on described workbench (1) can be along the rotation platform (3) of Y-axis rotation, on described rotation platform (3), be provided with and on described clamp body (4), be provided with several blocks (41) that are used for clamping parts to be measured along the clamp body (4) of transverse axis rotation.

2. a kind of automatic optical measurement instrument that is used for LCD according to claim 1, it is characterized in that: described rotation platform (3) comprises the base (31) that is fixed on the workbench (1), described base (31) is by the vertical drive rotating shaft (33) that has been rotatably connected of thrust force aligning bearing (32) and taper roll bearing (35), the upper end of described vertical drive rotating shaft (33) is provided with the shaft collar (34) that links to each other with clamp body (4), and the lower end of described vertical drive rotating shaft (33) links to each other with drive unit.

3. a kind of automatic optical measurement instrument that is used for LCD according to claim 2, it is characterized in that: described thrust force aligning bearing (32) and taper roll bearing (35) are coaxial to be inlaid between positioning disk (38) and the transition axis (36), described positioning disk (38) is fixed on the base (31), the lower end of described transition axis (36) links to each other with vertical drive rotating shaft (33) by shaft joint (37), and the upper end of described transition axis (36) links to each other with shaft collar (34).

4. a kind of automatic optical measurement instrument that is used for LCD according to claim 2, it is characterized in that: described shaft collar (34) is disc, be provided with several pilot holes (341) corresponding with clamp body (4) on described shaft collar (34), described pilot hole (341) is uniform at circumferencial direction along the central shaft of shaft collar (34).

5. according to any described a kind of automatic optical measurement instrument that is used for LCD in the claim 1 to 4, it is characterized in that: described clamp body (4) comprises that opening upwards is fixed on the U-shaped support (42) on the rotation platform (3), between the opening of described U-shaped support (42), be rotatably connected to horizontal rotating shaft (43), on described horizontal rotating shaft (43), be fixed with can with the synchronous clamping and positioning dish (44) of rotation of horizontal rotating shaft (43), described block (41) is slidingly connected on the clamping and positioning dish (44).

6. a kind of automatic optical measurement instrument that is used for LCD according to claim 5, it is characterized in that: described clamping and positioning dish (44) is the rectangle fixed head, the minor face of described clamping and positioning dish (44) is symmetrical distribution with the vertical continuous also relative horizontal rotating shaft (43) of horizontal rotating shaft (43), on described clamping and positioning dish (44), be provided with a pair of vertical two-way screw mandrel (45) that is parallel to each other, be connected with slide block (46) respectively at the two ends of described vertical two-way screw mandrel (45), level is connected with the horizontal bidirectional screw mandrel (47) perpendicular to vertical two-way screw mandrel (45) between two slide blocks (46) of correspondence, described block (41) symmetry is screwed on the horizontal bidirectional screw mandrel (47), is connected with drive motor respectively on described vertical two-way screw mandrel (45) and horizontal bidirectional screw mandrel (47).

7. a kind of automatic optical measurement instrument that is used for LCD according to claim 6, it is characterized in that: at the inboard parallel line slideway (48) that is provided with of described vertical two-way screw mandrel (45), and described line slideway (48) is symmetrically distributed between two vertical two-way screw mandrels (45), and described slide block (46) is slidingly connected on the corresponding line slideway (48).

8. a kind of automatic optical measurement instrument that is used for LCD according to claim 5 is characterized in that: be provided with several fixed orifices (49) on described clamping and positioning dish (44), described fixed orifice (49) is uniform on clamping and positioning dish (44) surface.

9. according to any described a kind of automatic optical measurement instrument that is used for LCD in the claim 1 to 4, it is characterized in that: constitute " V " font between the adjacent surface of described block (41), and on its adjacent surface, be provided with protective seam (5).

10. according to any described a kind of automatic optical measurement instrument that is used for LCD in the claim 1 to 4, it is characterized in that: be provided with the bracing frame (6) of framed structure in the below of described workbench (1), be provided with roller (7) in the bottom of support frame as described above (6).

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