CN221100551U - Four-station display screen detection mechanism - Google Patents

Abstract

The utility model discloses a four-station display screen detection mechanism, which comprises a rotary feeding and discharging device, a compaction adjusting device, an upper CCD photographing device, a lower CCD auxiliary alignment device, a detection rack, a fine positioning device, a transfer device and a conveying and discharging transfer device, wherein the rotary feeding and discharging device comprises a rotary disc and a rotary driving motor, the rotary disc is provided with a plurality of rotary stations, and each rotary station is provided with a plurality of discharging positions; the fine positioning device is positioned at the left side of the rotating disc, and the transferring device is positioned between the fine positioning device and the rotating disc; the compaction adjusting device, the upper CCD photographing device and the lower CCD auxiliary alignment device are all positioned at the rear side of the rotary disc, and the conveying and discharging transferring device is positioned at the right side of the rotary disc; the rotary disk rotates under the drive of rotary driving motor, and rotatory station on it passes through transfer device, goes up CCD device and transport unloading transfer device in proper order, has realized the continuous operation of the feeding of display screen, accurate positioning, detection and transport unloading, and the seamless connection of material transfer has improved display screen detection efficiency.

Description

Four-station display screen detection mechanism

Technical Field

The utility model relates to the technology in the field of display screen detection, in particular to a four-station display screen detection mechanism.

Background

The production of the mobile phone display screen is carried out through a plurality of links including assembly, detection, packaging, transportation and the like, wherein the detection link is particularly important, and whether the display screen has dead spots, light leakage, solid color, interference test, focusing, respiratory effect, contrast, color gradation, saturation and the like after being lightened needs to be judged. At present, a large amount of manual cooperation is needed in the detection process of a mobile phone display screen; for example, the feeding and discharging are adopted in the detection process of the display screen and are respectively and independently operated, which is equivalent to double time and has low efficiency; in addition, in the detection photographing link, the display screen lighting auxiliary mechanism is lacked, so that the lighting operation of the display screen cannot be smoothly performed, and the normal detection work of the display screen is greatly influenced.

Therefore, the existing display screen detection equipment is improved to solve the problems, and the detection quality and the detection efficiency are improved.

Disclosure of utility model

In view of the above, the utility model aims at the defects existing in the prior art, and the main purpose of the utility model is to provide a four-station display screen detection mechanism, which integrates a rotary feeding and discharging device, a compaction adjusting device, an upper CCD photographing device, a lower CCD auxiliary alignment device, a fine positioning device, a transfer device and a conveying and discharging transfer device on a detection rack to form a detection mechanism for a display screen.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

The utility model provides a quadruplex position display screen detection mechanism, its includes the rotatory business turn over material device that is used for the display screen to advance fast, is used for compressing tightly the adjustment device who circular telegrams to the display screen, is used for taking a picture the last CCD device that detects to the display screen, lower CCD auxiliary alignment device, detects the frame, is used for carrying out the accurate positioner of accurate positioning, transfer device and the transport unloading transfer device to the display screen, rotatory business turn over material device is including rotary disk and the rotatory driving motor that drives the rotary disk rotation, rotatory driving motor installs in detecting the frame, the rotary disk is installed in rotatory driving motor axle head, the rotary disk has a plurality of rotatory stations to be provided with a plurality of discharging positions that are used for placing the display screen that waits to detect side by side on every rotatory station; the fine positioning device is positioned at the left side of the rotating disc, and the transferring device is positioned between the fine positioning device and the rotating disc; the compaction adjusting device, the upper CCD photographing device and the lower CCD auxiliary alignment device are all positioned at the rear side of the rotary disc, and the carrying and discharging transfer device is positioned at the right side of the rotary disc; the rotary disk is driven by the rotary driving motor to rotate clockwise, and a plurality of rotary stations on the rotary disk sequentially pass through the transfer device, the upper CCD photographing device and the carrying and blanking transfer device.

As a preferred embodiment: the fine positioning device comprises a fine positioning bracket, a left positioning component for positioning the display screen, a right positioning component for buffering when the display screen is positioned, a front positioning component for front positioning the display screen and a rear positioning component for rear positioning the display screen; the left positioning assembly, the right positioning assembly, the front positioning assembly and the rear positioning assembly are respectively provided with a plurality of positioning columns, and the positioning columns are correspondingly and movably positioned at the front, rear, left and right positions outside the display screen.

As a preferred embodiment: two suction plates for sucking the display screen are arranged on the top of the fine positioning support side by side.

As a preferred embodiment: the left positioning assembly comprises a left positioning driving device and a left positioning arm, the left positioning driving device comprises a left positioning driving motor, a left positioning driving belt pulley set and a left positioning screw rod, the left positioning driving motor is arranged on the fine positioning support, the left positioning driving belt pulley set is arranged at the shaft end of the left positioning driving motor, the left positioning screw rod is connected with the output end of the left positioning driving belt pulley set, the left positioning driving motor drives the left positioning driving belt pulley set to rotate, and the left positioning screw rod rotates along with the left positioning driving belt pulley set; the left positioning arm comprises a first positioning support arm and a second positioning support arm, and the first positioning support arm and the second positioning support arm can be installed on the fine positioning support in a sliding mode in opposite directions and correspondingly matched with the left positioning screw rod in a threaded mode; the positioning columns are respectively arranged on the first positioning support arm and the second positioning support arm at intervals, and the positioning columns on the first positioning support arm and the positioning columns on the second positioning support arm are parallel to each other; the left positioning screw rod drives the first positioning support arm and the second positioning support arm to move in opposite directions, and positioning columns on the first positioning support arm and the second positioning support arm clamp and position the left display screen left and right; the first positioning support arm is close to the edge of the fine positioning support, and a buffer spring is arranged between the first positioning support arm and the fine positioning support.

As a preferred embodiment: the front positioning assembly comprises a front positioning bracket, a front positioning driving motor, a front positioning driving belt pulley group, a front positioning sliding seat and a front positioning block, wherein the front positioning bracket is arranged on the front side of the fine positioning bracket; the front positioning sliding seat can be longitudinally and slidably arranged on the front positioning bracket and is connected with a belt of the front positioning driving belt pulley group, the number of the front positioning blocks is two, the front positioning blocks are correspondingly arranged at the front end of the front positioning sliding seat, and the top of each front positioning block is provided with a positioning column.

As a preferred embodiment: upper light sources corresponding to the discharge level below the upper CCD photographing device are respectively arranged on two sides of the detection frame; a lower light source corresponding to the discharge position is arranged below the rotary disk, and a front light source is arranged at the front side of the upper CCD photographing device; the upper light source comprises a light source support, a light bar and a light bar lifting cylinder, the light source support is arranged on two sides of the detection frame, the light bar lifting cylinder is vertically arranged on the light source support, and the light bar is longitudinally arranged at the shaft end of the light bar lifting cylinder; the light bars at the two sides are symmetrically positioned at the two sides of the upper CCD photographing device; the front side light source is also a light bar and is transversely arranged at the front side of the detection rack; the lower side light source is a lamp panel which is paved below the rotating disc and faces to the discharging position.

As a preferred embodiment: the rotary disk is provided with four rotary stations which are distributed in a cross shape.

As a preferred embodiment: the transfer device comprises a transfer bracket, a first transfer component, a second transfer component, a transverse driving device and a longitudinal driving device, wherein the first transfer component is arranged on the transfer bracket and used for transferring the cleaned display screen to the fine positioning device, the second transfer component is used for transferring the display screen which is accurately positioned on the fine positioning device to the discharging position, the transverse driving device is used for driving the first transfer component and the second transfer component to transversely move, and the longitudinal driving device is used for driving the second transfer component to longitudinally move; the transfer bracket is positioned between the fine positioning device and the rotating disc, the transverse driving device is in a mode of combining a motor, a screw rod and a sliding block, the motor drives the screw rod to rotate, the sliding block transversely moves, a cross beam is arranged on the sliding block, and the first transfer assembly is arranged on the cross beam; the longitudinal driving device is longitudinally arranged on the cross beam and is also in a mode of combining a motor, a screw rod and a sliding block, and the second transferring assembly is arranged on the sliding block; the first transfer assembly comprises a first vertical cylinder, a first longitudinal cylinder and two groups of suckers, the first vertical cylinder is vertically arranged on the cross beam, a connecting plate is arranged at the shaft end of the first vertical cylinder, and the first group of suckers are fixed at one end of the lower surface of the connecting plate; the first longitudinal cylinder is longitudinally arranged on the lower surface of the connecting plate, the second group of suckers are arranged at the shaft ends of the first longitudinal cylinder, and the second group of suckers are driven by the first longitudinal cylinder to approach or depart from the first group of suckers so as to realize the adsorption transfer of the display screens with different placement intervals; the second transferring assembly comprises a motor, a belt pulley group and two groups of suckers, the motor is arranged on a sliding block of the longitudinal driving device, the belt pulley group is vertically arranged on the sliding block and connected with the motor, a sliding support plate is connected on a belt of the belt pulley group, and the suckers can be arranged at the lower end of the sliding support plate at intervals in an elastic floating mode.

As a preferred embodiment: the conveying and discharging transfer device comprises a transverse transfer assembly and a rotary discharging assembly, wherein the transverse transfer assembly is positioned beside the rotary disc and comprises a transverse transfer bracket, a transverse driving motor, a belt pulley group, a sliding plate, a cantilever beam and a transfer sucker; the transverse transfer support is transversely arranged on the detection rack, the transverse driving motor is arranged at the end part of the transverse transfer support, the belt wheel set is transversely arranged on the transverse transfer support, and the sliding plate is slidably arranged on the transverse transfer support and is connected with a belt of the belt wheel set; the cantilever beam is longitudinally arranged on the sliding plate, the transfer sucker comprises a plurality of suckers and a lifting cylinder for driving the suckers to lift, the lifting cylinder is vertically arranged on the cantilever beam, a supporting plate capable of longitudinally covering the discharging position of a rotating station on the rotating disc is arranged at the shaft end of the lifting cylinder, and the suckers are arranged on the lower surface of the supporting plate at intervals; the rotary blanking component is positioned on the right side of the transverse transfer bracket and is provided with a rotatable receiving tray.

As a preferred embodiment: the rotary blanking assembly comprises a rotary air cylinder and a receiving tray, the rotary air cylinder is arranged on the right side of the transverse transfer support, the receiving tray is arranged at the shaft end of the rotary air cylinder, and four discharging positions are respectively arranged at two ends of the receiving tray; the transfer sucker is placed on four discharging positions of the receiving tray after four display screens are synchronously adsorbed on four discharging positions on the rotating disc, and the rotating cylinder drives the receiving tray to rotate, so that the discharging positions at two ends of the transfer sucker can alternately correspond to the transfer sucker for receiving operation.

Compared with the prior art, the utility model has obvious advantages and beneficial effects, in particular, the technical scheme shows that the rotary feeding and discharging device, the compaction adjusting device, the upper CCD photographing device, the lower CCD auxiliary alignment device, the fine positioning device, the transferring device and the conveying and blanking transferring device are integrated on the detection frame to form the detection mechanism for the display screen, the four rotary stations are matched with the compaction adjusting device, the upper CCD photographing device, the lower CCD auxiliary alignment device, the fine positioning device, the transferring device and the conveying and blanking transferring device to realize continuous operation of feeding, fine positioning, detecting and conveying and blanking of the display screen, and the whole operation procedure is in seamless connection, so that the time used in the material transferring process is greatly reduced, and the detection efficiency of the display screen is greatly improved. And the compaction adjusting device and the lower CCD auxiliary alignment device are adopted to accurately position and light the display screen to be detected, so that an effective bedding is provided for the subsequent photographing detection work of the upper CCD photographing device, the detection precision of the display screen is improved integrally, and the detection quality is improved.

In order to more clearly illustrate the structural features and efficacy of the present utility model, a detailed description thereof will be given below with reference to the accompanying drawings and examples.

Drawings

FIG. 1 is a schematic perspective view of a detecting mechanism of the present utility model;

FIG. 2 is a perspective view of another view of the detecting mechanism of the present utility model;

FIG. 3 is a perspective view of a fine positioning device according to the present utility model from a first perspective (with suction plate);

FIG. 4 is a perspective view of a second view of the fine positioning device of the present utility model;

FIG. 5 is a perspective view of a third view of the fine positioning device according to the present utility model;

FIG. 6 is a perspective view of a fourth view of the fine positioning device of the present utility model;

FIG. 7 is a schematic perspective view of a rotary feeding/discharging device according to the present utility model;

FIG. 8 is a perspective view of a rotary feeding and discharging device according to another embodiment of the present utility model;

FIG. 9 is a schematic perspective view of the compression adjustment apparatus of the present utility model;

FIG. 10 is a schematic perspective view of an upper CCD camera of the present utility model;

FIG. 11 is a schematic perspective view of a lower CCD camera of the present utility model;

FIG. 12 is a schematic perspective view of a transfer device of the present utility model;

FIG. 13 is a schematic perspective view of another view of the transfer device of the present utility model.

The attached drawings are used for identifying and describing:

10. A detection mechanism; 11. rotating the feeding and discharging device; 111. discharging material level; 112. a rotating disc; 113. a rotary drive motor; 114. a placement table; 115. a support step; 116. a transparent support block; 117. a rotating station; 12. a compaction adjustment device; 121. testing a pressure head by a probe; 122. compressing the adjusting bracket; 123. a vertical adjusting cylinder; 124. a probe fine tuning assembly; 1241. fine tuning the base; 1242. a transverse fine tuning screw; 1243. a sliding seat is transversely finely adjusted; 1244. a longitudinal fine tuning screw; 1245. longitudinally fine-tuning the slide seat; 1246. fine tuning the connecting seat; 125. adjusting the mounting seat; 13. a CCD photographing device is arranged; 131. an upper bracket; 132. a CCD lens is arranged; 133. an upper photographing driving assembly; 1331. an upper guide rail; 1332. an upper slider; 1333. an upper driving screw; 1334. locking the screw rod; 1335. rotating the nut; 14. a lower CCD auxiliary alignment device; 141. a lower alignment substrate; 142. a lower alignment transverse sliding seat; 143. a lower alignment longitudinal slide seat; 144. a lower CCD lens; 15. a detection rack; 151. an upper light source; 1511. a light source support; 1512. a light bar; 1513. a lamp strip lifting cylinder; 152. a lower light source; 153. a front side light source;

16. A fine positioning device; 161. a fine positioning bracket; 162. a suction plate; 163. a left positioning assembly; 1631. a left positioning driving device; 1632. a left positioning arm; 1633. a left positioning driving motor; 1634. left positioning driving belt pulley group; 1635. a left positioning screw rod; 1636. a first positioning arm; 1637. a second positioning arm; 1638. a buffer spring; 164. a right positioning assembly; 1641. avoiding the notch; 165. a front positioning assembly; 1651. a front positioning bracket; 1652. a front positioning driving motor; 1653. front positioning driving belt wheel group; 1654. a front positioning sliding seat; 1655. a front positioning block; 166. a rear positioning assembly; 1661. a rear positioning driving cylinder; 1662. a rear positioning support arm; 167. positioning columns; 168. a sensor; 169. a positioning area;

17. A transfer device; 171. transferring a bracket; 172. a first transfer assembly; 1721. a first vertical cylinder; 1722. a first longitudinal cylinder; 1723. a suction cup; 1724. a connecting plate; 173. a second transfer assembly; 1731. a motor; 1732. a belt pulley group; 1733. a suction cup; 174. a lateral drive device; 175. a longitudinal driving device; 176. a cross beam;

18. Carrying a blanking transfer device; 181. a lateral transfer assembly; 1811. a lateral transfer stent; 1812. a transverse driving motor; 1813. a belt pulley group; 1814. a slide plate; 1815. a cantilever beam; 1816. a transfer chuck; 18161. a suction cup; 18162. a lifting cylinder; 18163. a support plate; 182. rotating the blanking assembly; 1821. a rotary cylinder; 1822. and a receiving tray.

Detailed Description

The utility model is as shown in fig. 1 to 13, a four-station display screen detection mechanism, which comprises a rotary feeding and discharging device 11 for fast feeding and discharging of a display screen, a compaction adjusting device 12 for compacting and electrifying the display screen, an upper CCD photographing device 13 for photographing and detecting the display screen, a lower CCD auxiliary alignment device 14, a detection frame 15, a fine positioning device 16, a transfer device 17 and a carrying and blanking transfer device 18, wherein:

The rotary feeding and discharging device 11 comprises a rotary disc 112 and a rotary driving motor 113 for driving the rotary disc 112 to rotate, the rotary driving motor 113 is mounted on the detection frame 15, the rotary disc 112 is mounted at the shaft end of the rotary driving motor 113, the rotary disc 112 is provided with four rotary stations 117, the four rotary stations 117 are distributed in a cross shape, and four discharging positions 111 for placing a display screen to be detected are arranged on each rotary station 117 side by side. The feeding of the display screen to be detected and the discharging of the display screen after detection can be simultaneously carried out by rotating the feeding and discharging device 11, so that the detection efficiency of the display screen is improved.

The fine positioning device 16 is positioned at the left side of the rotating disc 112, and the transferring device 17 is positioned between the fine positioning device 16 and the rotating disc 112; the compaction adjusting device 12, the upper CCD photographing device 13 and the lower CCD auxiliary alignment device 14 are all positioned at the rear side of the rotary disc 112, and the carrying and discharging transfer device 18 is positioned at the right side of the rotary disc 112; the rotary disk 112 is driven by the rotary driving motor 113 to rotate clockwise, and the upper four rotary stations 117 sequentially pass through the transfer device 17, the upper CCD photographing device 13 and the carrying and blanking transfer device 18, so that uninterrupted feeding, detecting and blanking operations are realized, and the detection efficiency is improved.

Specifically, the compaction adjusting device 12 is located above the rotary feeding and discharging device 11, the lower CCD auxiliary alignment device 14 is located below the rotary feeding and discharging device 11, and the upper CCD photographing device 13 is located above the compaction adjusting device 12 and vertically aligned with the discharging position 111. The pressing adjusting device 12 is provided with a probe testing pressure head 121 which can move up and down to be in electrical contact with a chip of the display screen so as to supply power to the display screen; the lower CCD auxiliary alignment device 14 is slidably corresponding to the upper CCD photographing device 13 up and down, so as to flexibly assist the photographing detection of the upper CCD photographing device 13.

The compaction adjusting device 12 comprises a compaction adjusting bracket 122, a vertical adjusting cylinder 123 and a probe fine adjusting assembly 124, wherein the compaction adjusting bracket 122 is installed on the detecting frame 15, the vertical adjusting cylinder 123 is installed on the compaction adjusting bracket 122, and the probe fine adjusting assembly 124 can be vertically and slidably installed on the compaction adjusting bracket 122 and is connected with the shaft end of the vertical adjusting cylinder 123; the probe test ram 121 is mounted on the output end of the probe trimming assembly 124 above the rotary feed and discharge device 11.

The shaft end of the vertical adjusting cylinder 123 is connected with an adjusting mounting seat 125, the probe fine adjustment assembly 124 is mounted on the adjusting mounting seat 125, and comprises a fine adjustment base 1241, a transverse fine adjustment screw 1242, a transverse fine adjustment slide seat 1243, a longitudinal fine adjustment screw 1244, a longitudinal fine adjustment slide seat 1245 and a fine adjustment connecting seat 1246, the fine adjustment base 1241 is fixed on the adjusting mounting seat 125, the transverse fine adjustment screw 1242 is rotatably mounted on the fine adjustment base 1241, and the transverse fine adjustment screw 1243 is transversely slidably mounted on the fine adjustment base 1241 and is connected with the transverse fine adjustment screw 1242; the longitudinal fine adjustment screw 1244 is rotatably mounted on the lateral fine adjustment slide 1243, and the longitudinal fine adjustment slide 1245 is longitudinally slidably mounted on the lateral fine adjustment slide 1243 and connected with the longitudinal fine adjustment screw 1244; the fine tuning connection block 1246 is mounted on the longitudinal fine tuning slide block 1245, and the probe test ram 121 is mounted on the fine tuning connection block 1246 and faces the discharge level 111. The transverse fine adjustment sliding seat 1243 and the longitudinal fine adjustment sliding seat 1245 are moved by a small distance by rotating the transverse fine adjustment screw 1242 and the longitudinal fine adjustment screw 1244, so that the position of the fine adjustment connecting seat 1246 is corrected, the position is more accurate, and the detection precision is improved. The principle of adjusting the positions of the lateral fine adjustment slide 1243 and the longitudinal fine adjustment slide 1245 by the lateral fine adjustment screw 1242 and the longitudinal fine adjustment screw 1244 is similar to the driving manner of the screw slider, and will not be described herein.

The upper CCD photographing device 13 comprises an upper bracket 131, an upper CCD lens 132 which is arranged on the upper bracket 131 in a vertically sliding manner, and an upper photographing driving assembly 133 which is used for driving the upper CCD lens 132 to slide on the upper bracket 131, wherein the upper bracket 131 is arranged on the detection frame 15, the upper photographing driving assembly 133 comprises an upper guide sliding rail 1331, an upper sliding seat 1332 and an upper driving screw 1333, the upper guide sliding rail 1331 is vertically arranged on the upper bracket 131, the upper sliding seat 1332 is arranged on the upper guide sliding rail 1331 in a sliding manner, and the upper driving screw 1333 is rotatably arranged on the upper bracket 131 and is rotatably matched with the upper sliding seat 1332; the upper CCD lens 132 is mounted on an upper slider 1332. The upper sliding seat 1332 is provided with a locking screw rod 1334 for fixing the upper sliding seat 1332 on the upper bracket 131, and when the upper sliding seat 1332 moves in place, the upper sliding seat 1332 is fixed by rotating the locking screw rod 1334, and otherwise, the upper sliding seat 1332 is loosened; and a rotation nut 1335 for facilitating the hand-held rotation is installed at the lower end of the upper driving screw 1333.

The lower CCD auxiliary alignment device 14 is mainly used for aligning the probe test press head 121 with the center of the glass chip of the display screen, improving the lighting accuracy of the display screen, and in the debugging stage, the lower CCD lens can be used for amplifying the area of the glass chip so as to combine the probe fine adjustment assembly 124 to accurately adjust the probe test press head 121, so that the probe test press head 121 is accurately contacted with the glass chip of the display screen and is fixed at the center position of the glass chip. The lower CCD auxiliary alignment device 14 includes a lower alignment substrate 141, a lower alignment horizontal sliding seat 142, a lower alignment vertical sliding seat 143, and a lower CCD lens 144, wherein the lower alignment substrate 141 is located below the rotating disc 112, the lower alignment vertical sliding seat 143 is longitudinally slidably mounted on the lower alignment substrate 141, the lower alignment horizontal sliding seat 142 is transversely slidably mounted on the lower alignment vertical sliding seat 143, and the lower CCD lens 144 is mounted on the lower alignment horizontal sliding seat 142. The position of the lower CCD lens 144 can be adjusted by adjusting the lower alignment longitudinal slide 143 and the lower alignment lateral slide 142 to meet the auxiliary alignment requirements of different positions.

The lower CCD auxiliary alignment device 14 is slidably located below the plurality of placement levels 111 back and forth through a sliding rail, and when auxiliary alignment is needed by a display screen on one of the placement levels 111, the lower CCD auxiliary alignment device 14 is slid to the position below the corresponding placement level 111; thereby realizing multiple purposes and fully utilizing resources.

The rotary disk 112 is provided with a placement table 114 with a hollowed-out hole corresponding to the placement position 111, a support step 115 for supporting a display screen is convexly arranged on the top of the inner wall of one side of the placement table 114, which is close to the compaction adjusting device 12, towards the hollowed-out hole, a transparent support block 116 is arranged on the support step 115 corresponding to the chip area of the display screen, and when the display screen is placed on the placement table 114, the chip area of the display screen is positioned above the transparent support block 116. To facilitate photographing of the lower CCD lens 144. The inner wall of the placement table 114 is inclined, which enlarges the upward visual field range of the lower CCD lens 144, and enables the display screen to be completely located in the shooting range of the lower CCD lens 144.

An upper light source 151 corresponding to the discharge level 111 below the upper CCD lens 132 is respectively arranged at two sides of the detection frame 15; a lower light source 152 corresponding to the discharge level 111 is disposed below the rotary plate 112, and a front light source 153 is disposed in front of the upper CCD lens 132; the upper side light source 151 comprises a light source support 1511, a light bar 1512 and a light bar lifting cylinder 1513, the light source support 1511 is arranged at two sides of the detection frame 15, the light bar lifting cylinder 1513 is vertically arranged on the light source support 1511, and the light bar 1512 is longitudinally arranged at the shaft end of the light bar lifting cylinder 1513; and the light bars 1512 on both sides are symmetrically located on both sides of the upper CCD lens 132. The front light source 153 is also in the form of a light bar and is transversely mounted on the front side of the detection frame 15; the lower light source 152 is a lamp plate, which is disposed below the rotating disc 112 and faces the discharge position 111. The upper side light source 151, the lower side light source 152 and the front side light source 153 provide illumination conditions for accurate alignment and photographing detection of the display screen, so that the accuracy of the detection of the display screen is improved.

The fine positioning device 16 is used for precisely aligning the display screen before the detection of the display screen, and comprises a fine positioning bracket 161, a suction plate 162 for bearing and adsorbing the display screen, a left positioning component 163 for positioning the display screen, a right positioning component 164 for buffering when the display screen is positioned, a front positioning component 165 for positioning the display screen before, and a rear positioning component 166 for positioning the display screen after, wherein:

The suction plate 162 is mounted on the top of the fine positioning bracket 161; the left positioning assembly 163, the right positioning assembly 164, the front positioning assembly 165 and the rear positioning assembly 166 are respectively provided with a plurality of positioning posts 167, and the positioning posts 167 are correspondingly and movably positioned at the front, rear, left and right positions outside the display screen.

Two suction plates 162 (a plurality of suction holes are formed in the suction plates 162 to form suction on a display screen) are arranged on the top of the fine positioning support 161 in parallel left and right, the left positioning assembly 163 comprises a left positioning driving device 1631 and a left positioning arm 1632, the left positioning driving device 1631 comprises a left positioning driving motor 1633, a left positioning driving belt pulley group 1634 and a left positioning screw rod 1635, the left positioning driving motor 1633 is arranged on the fine positioning support 161, the left positioning driving belt pulley group 1634 is arranged at the shaft end of the left positioning driving motor 1633, the left positioning screw rod 1635 is connected with the output end of the left positioning driving belt pulley group 1634, the left positioning driving motor 1633 drives the left positioning driving belt pulley group 1634 to rotate, and the left positioning screw rod 1635 rotates along with the left positioning driving belt pulley group 1633; the left positioning arm 1632 includes a first positioning arm 1636 and a second positioning arm 1637, where the first positioning arm 1636 and the second positioning arm 1637 can be slidably installed on the fine positioning bracket 161 in opposite directions and correspondingly in threaded fit with the left positioning screw 1635; the positioning posts 167 are respectively arranged on the first positioning support arm 1636 and the second positioning support arm 1637 at intervals, and the positioning posts 167 on the first positioning support arm 1636 and the positioning posts 167 on the second positioning support arm 1637 are parallel to each other; the left positioning screw 1635 drives the first positioning arm 1636 and the second positioning arm 1637 to move in opposite directions, and the positioning columns 167 on the first positioning arm 1636 and the second positioning arm 1637 clamp and position the left display screen left and right. And a buffer spring 1638 is arranged between the first positioning support arm 1636 close to the edge of the fine positioning support 161 and the fine positioning support 161, and when the left positioning screw 1635 drives the first positioning support arm 1636 to approach the second positioning support arm 1637, the buffer spring 1638 generates elastic tension in the opposite direction to the first positioning support arm 1636, so that the first positioning support arm 1636 is prevented from rigidly colliding with the edge of the display screen when the left positioning screw 1635 is driven to move, and the display screen is damaged.

The right positioning components 164 are distributed on the right side of the fine positioning frame 161, and have the same structure and principle as the left positioning components 163. The positioning posts 167 of the right positioning assembly 164 and the positioning posts 167 of the left positioning assembly 163 are laterally offset from each other; moreover, the second positioning arm 1637 of the right positioning assembly 164 is provided with a avoiding notch 1641 on the positioning post 167 of the second positioning arm 1637 corresponding to the left positioning assembly 163, so as to prevent interference phenomenon when the two are reset to the middle.

The front positioning assembly 165 includes a front positioning bracket 1651, a front positioning driving motor 1652, a front positioning driving belt pulley set 1653, a front positioning sliding seat 1654 and a front positioning block 1655, wherein the front positioning bracket 1651 is mounted on the front side of the fine positioning bracket 161, the front positioning driving motor 1652 is mounted on the front positioning bracket 161, and the front positioning driving belt pulley set 1653 is longitudinally arranged on the front positioning bracket 1651 and is connected with the shaft end of the front positioning driving motor 1652; the front positioning sliding seat 1654 is longitudinally slidably mounted on the front positioning bracket 1651 and connected to the belt of the front positioning driving pulley set 1653, two front positioning blocks 1655 are correspondingly mounted at the front end of the front positioning sliding seat 1654, and a positioning column 167 is mounted at the top of the front positioning block 1655. The front positioning driving motor 1652 drives the front positioning driving belt pulley set 1653 to operate, the front positioning sliding seat 1654 slides back and forth under the driving of the front positioning driving belt pulley set 1653, and the positioning column 167 on the front positioning block 1655 is close to or far away from the display screen under the driving of the front positioning sliding seat 1654.

The rear positioning assembly 166 comprises a rear positioning driving cylinder 1661 and a rear positioning support arm 1662, the rear positioning support arm 1662 is longitudinally slidably mounted on the fine positioning support 161, the rear positioning driving cylinder 1661 is mounted on the side portion of the fine positioning support 161, the rear positioning support arm 1662 is mounted on the shaft end of the rear positioning driving cylinder 1661, and a positioning column 167 is arranged on the rear positioning support arm 1662, the rear positioning driving cylinder 1661 drives the rear positioning support arm 1662 to move back and forth, and the positioning column 167 on the rear positioning support arm 1662 is close to or far away from the front side of the display screen.

In addition, sensors 168 for detecting the movement positions of the respective positioning columns are provided on the fine positioning bracket 161 for the left, right, front and rear positioning assemblies 163, 164, 165 and 166, respectively.

The left positioning component 163 is used for positioning left and right of a left display screen, the right positioning component 164 is used for positioning left and right of a right display screen, the front positioning component 165 and the rear positioning component 166 are used for positioning front and rear positions of the left and right display screens, a plurality of positioning columns on each positioning component are enclosed to form left and right positioning areas 169 for placing left and right display screens, and accurate positioning is realized on the display screens located in the left and right positioning areas 169.

The accurate positioning device integrates the left positioning component, the right positioning component, the front positioning component and the rear positioning component on the accurate positioning support to form a four-station display screen detection mechanism, and the four-station display screen detection mechanism utilizes the automatic adjustment of the left positioning component, the right positioning component, the front positioning component and the rear positioning component to enable the positioning columns to be close or scatter to form left and right positioning areas capable of adjusting the size according to the size, so that the automatic positioning requirement of a display screen is met, the positioning efficiency and the positioning precision are improved, the manual labor is reduced, and the cost is reduced.

The transfer device 17 comprises a transfer bracket 171, a first transfer assembly 172 mounted on the transfer bracket 171 for transferring the cleaned display screen onto the fine positioning device 16 by a cleaning mechanism (a mechanism for cleaning the display screen to be detected before the detection mechanism), a second transfer assembly 173 for transferring the display screen which has been precisely positioned on the fine positioning device 16 onto the placement position 111, a transverse driving device 174 for driving the first transfer assembly 172 and the second transfer assembly 173 to move transversely, and a longitudinal driving device 175 for driving the second transfer assembly 173 to move longitudinally; the transfer bracket 171 is located between the fine positioning device 16 and the rotating disc 112, the transverse driving device 174 is in a form of combining a motor, a screw rod and a sliding block, the motor drives the screw rod to rotate, the sliding block transversely moves, a cross beam 176 is arranged on the sliding block, and the first transfer component 172 is mounted on the cross beam 176; the longitudinal driving device 174 is longitudinally arranged on the cross beam 176, which is also in the form of a combination of a motor, a screw rod and a sliding block, and the second transferring assembly 173 is arranged on the sliding block; the first transfer assembly 172 includes a first vertical cylinder 1721, a first longitudinal cylinder 1722, and two groups of suction cups 1723, the first vertical cylinder 1721 is vertically installed on the cross beam 176, a connecting plate 1724 is installed at the shaft end of the first vertical cylinder 1721, and the first group of suction cups 1723 are fixed at one end of the lower surface of the connecting plate 1724; the first vertical cylinder 1722 is longitudinally installed on the lower surface of the connecting plate 1724, the second group of suckers 1723 are installed at the shaft end of the first vertical cylinder 1722, and the second group of suckers 1723 are driven by the first vertical cylinder 1722 to be close to or far away from the first group of suckers 1723 so as to realize the adsorption transfer of the display screens with different placement intervals. The second transfer assembly 173 comprises a motor 1731, a pulley set 1732 and two sets of suction cups 1733, wherein the motor 1731 is mounted on a slider of the longitudinal driving device 175, the pulley set 1732 is vertically arranged on the slider and connected with the motor, a sliding support plate is connected on a belt of the pulley set 1732, and the suction cups 1733 can be elastically and floatingly mounted at the lower end of the sliding support plate.

The transfer device 17 operates on the following principle: after the display screen is cleaned by the cleaning mechanism, the transverse driving device drives the first transfer assembly and the second transfer assembly to synchronously move leftwards, two groups of suckers of the first transfer assembly correspondingly adsorb the two cleaned display screens by the cleaning mechanism, the second transfer assembly adsorbs the two precisely positioned display screens by the fine positioning device, and in the process, the longitudinal driving device can drive the second transfer assembly to longitudinally move on the fine positioning device to perform material taking operation; then, the transverse driving device drives the first transfer assembly and the second transfer assembly to move rightwards, the first transfer assembly places the two adsorbed cleaned display screens on the fine positioning device for fine positioning operation, the second transfer assembly places the two precisely positioned display screens on the placement position of the rotating disc, and in the process, the longitudinal driving device can drive the second transfer assembly to move above the rotating disc to place the display screens in the corresponding placement positions. The transfer device realizes that the material is received by the cleaning mechanism and placed on the fine positioning device, and the consistency operation that the material is taken from the fine positioning device and placed on the rotating disc is realized, so that the seamless connection of the transfer of the display screen is realized, the transfer time of the material between stations is reduced, and the material transfer efficiency is improved. Therefore, the overall detection efficiency of the display screen is quickened.

The handling and blanking transfer device 18 comprises a transverse transfer component 181 and a rotary blanking component 182, wherein the transverse transfer component 181 is positioned beside the rotary disk 112 and comprises a transverse transfer bracket 1811, a transverse driving motor 1812, a belt wheel set 1813, a sliding plate 1814, a cantilever beam 1815 and a transfer sucker 1816; the transverse transfer bracket 1811 is transversely arranged on the detection frame 15, the transverse driving motor 1812 is mounted at the end part of the transverse transfer bracket 1811, the pulley set 1813 is transversely arranged on the transverse transfer bracket 1811, and the sliding plate 1814 is slidably mounted on the transverse transfer bracket 1811 and connected with a belt of the pulley set 1813; the cantilever beam 1815 is longitudinally mounted on the slide plate 1814, the transfer sucker 1816 comprises a plurality of suckers 18161 (not shown) and a lifting cylinder 18162 for driving the sucker 18161 to lift, the lifting cylinder 18162 is vertically mounted on the cantilever beam 1815, a support plate 18163 capable of longitudinally covering four discharge positions 111 of the rotary station 117 on the rotary disk 112 is mounted at the shaft end of the lifting cylinder 18162, and the suckers 18161 are mounted on the lower surface of the support plate 18163 at intervals.

The rotary blanking assembly 182 includes a rotary cylinder 1821 and a receiving tray 1822, the rotary cylinder 1821 is mounted on the right side of the transverse transfer bracket 181, the receiving tray 1822 is mounted at the shaft end of the rotary cylinder 1821, and four discharging positions are respectively provided at two ends of the receiving tray 1822; the transfer sucker 1816 is placed on the four discharging positions of the receiving tray 1822 after four display screens are synchronously adsorbed on the four discharging positions 111 on the rotary disk 112, and the rotary cylinder 1821 drives the receiving tray 1822 to rotate, so that the discharging positions at two ends of the receiving tray can alternately correspond to the transfer sucker 1816 for receiving.

The detection principle of the four-station display screen detection mechanism is as follows: the transfer device is used for placing the cleaned display screen at the fine positioning device to carry out fine positioning operation, and meanwhile, the display screen which is subjected to fine positioning on the fine positioning device is transferred and placed on the placement position of the rotating disc. The rotary driving motor drives the rotary disk to rotate clockwise to rotationally feed the display screen below the compaction adjusting device, and the probe test pressure head of the compaction adjusting device is downwards contacted with the glass chip of the display screen; meanwhile, the lower CCD auxiliary alignment device amplifies and identifies the contact position of the probe test pressure head and the glass chip, if the contact is inaccurate, the probe fine adjustment assembly is used for carrying out fine adjustment on the position of the probe test pressure head, so that the probe test pressure head is finally in accurate contact with the glass chip, and then the probe test pressure head is used for powering on and lighting a display screen; the upper CCD photographing device photographs the display screen, judges whether dead pixels exist or not through comparison with prestored parameters, and whether lines and colors are normal or not, and rotates the detected display screen to the conveying and blanking transfer device for blanking after detection. The rotary driving motor drives the rotary disk to rotate continuously, the discharging position of the other group (four) of display screens is rotated again to move to the lower part of the compaction adjusting device, a new round of detection work is started, and the whole operation procedure is sequentially circulated and carried out in a seamless connection mode.

The utility model is designed with the key that the rotary feeding and discharging device, the compaction adjusting device, the upper CCD photographing device, the lower CCD auxiliary alignment device, the fine positioning device, the transfer device and the carrying and discharging transfer device are integrated on the detection rack to form a detection mechanism for the display screen, and the detection mechanism adopts four rotary stations to be matched with the compaction adjusting device, the upper CCD photographing device, the lower CCD auxiliary alignment device, the fine positioning device, the transfer device and the carrying and discharging transfer device to realize continuous operation of feeding, fine positioning, detection and carrying and discharging of the display screen, so that the whole operation procedure is in seamless connection, the time used in the material transfer process is greatly reduced, and the detection efficiency of the display screen is greatly improved. And the compaction adjusting device and the lower CCD auxiliary alignment device are adopted to accurately position and light the display screen to be detected, so that an effective bedding is provided for the subsequent photographing detection work of the upper CCD photographing device, the detection precision of the display screen is improved integrally, and the detection quality is improved.

The foregoing description is only a preferred embodiment of the present utility model, and is not intended to limit the technical scope of the present utility model, so any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present utility model still fall within the scope of the technical solutions of the present utility model.

Claims (10)

1. A four-station display screen detection mechanism is characterized in that: the automatic feeding and discharging device comprises a rotary feeding and discharging device for rapidly feeding and discharging a display screen, a compaction adjusting device for compacting and electrifying the display screen, an upper CCD photographing device for photographing and detecting the display screen, a lower CCD auxiliary alignment device, a detection rack, a fine positioning device for precisely positioning the display screen, a transferring device and a conveying and discharging transferring device, wherein the rotary feeding and discharging device comprises a rotary disc and a rotary driving motor for driving the rotary disc to rotate, the rotary driving motor is arranged on the detection rack, the rotary disc is arranged at the shaft end of the rotary driving motor, the rotary disc is provided with a plurality of rotary stations, and a plurality of discharging positions for placing the display screen to be detected are arranged on each rotary station side by side; the fine positioning device is positioned at the left side of the rotating disc, and the transferring device is positioned between the fine positioning device and the rotating disc; the compaction adjusting device, the upper CCD photographing device and the lower CCD auxiliary alignment device are all positioned at the rear side of the rotary disc, and the carrying and discharging transfer device is positioned at the right side of the rotary disc; the rotary disk is driven by the rotary driving motor to rotate clockwise, and a plurality of rotary stations on the rotary disk sequentially pass through the transfer device, the upper CCD photographing device and the carrying and blanking transfer device.

2. The four-position display screen detection mechanism of claim 1, wherein: the fine positioning device comprises a fine positioning bracket, a left positioning component for positioning the display screen, a right positioning component for buffering when the display screen is positioned, a front positioning component for front positioning the display screen and a rear positioning component for rear positioning the display screen; the left positioning assembly, the right positioning assembly, the front positioning assembly and the rear positioning assembly are respectively provided with a plurality of positioning columns, and the positioning columns are correspondingly and movably positioned at the front, rear, left and right positions outside the display screen.

3. The four-position display screen detection mechanism of claim 2, wherein: two suction plates for sucking the display screen are arranged on the top of the fine positioning support side by side.

4. The four-position display screen detection mechanism of claim 2, wherein: the left positioning assembly comprises a left positioning driving device and a left positioning arm, the left positioning driving device comprises a left positioning driving motor, a left positioning driving belt pulley set and a left positioning screw rod, the left positioning driving motor is arranged on the fine positioning support, the left positioning driving belt pulley set is arranged at the shaft end of the left positioning driving motor, the left positioning screw rod is connected with the output end of the left positioning driving belt pulley set, the left positioning driving motor drives the left positioning driving belt pulley set to rotate, and the left positioning screw rod rotates along with the left positioning driving belt pulley set; the left positioning arm comprises a first positioning support arm and a second positioning support arm, and the first positioning support arm and the second positioning support arm can be installed on the fine positioning support in a sliding mode in opposite directions and correspondingly matched with the left positioning screw rod in a threaded mode; the positioning columns are respectively arranged on the first positioning support arm and the second positioning support arm at intervals, and the positioning columns on the first positioning support arm and the positioning columns on the second positioning support arm are parallel to each other; the left positioning screw rod drives the first positioning support arm and the second positioning support arm to move in opposite directions, and positioning columns on the first positioning support arm and the second positioning support arm clamp and position the left display screen left and right; the first positioning support arm is close to the edge of the fine positioning support, and a buffer spring is arranged between the first positioning support arm and the fine positioning support.

5. The four-position display screen detection mechanism of claim 2, wherein: the front positioning assembly comprises a front positioning bracket, a front positioning driving motor, a front positioning driving belt pulley group, a front positioning sliding seat and a front positioning block, wherein the front positioning bracket is arranged on the front side of the fine positioning bracket; the front positioning sliding seat can be longitudinally and slidably arranged on the front positioning bracket and is connected with a belt of the front positioning driving belt pulley group, the number of the front positioning blocks is two, the front positioning blocks are correspondingly arranged at the front end of the front positioning sliding seat, and the top of each front positioning block is provided with a positioning column.

6. The four-position display screen detection mechanism of claim 1, wherein: upper light sources corresponding to the discharge level below the upper CCD photographing device are respectively arranged on two sides of the detection frame; a lower light source corresponding to the discharge position is arranged below the rotary disk, and a front light source is arranged at the front side of the upper CCD photographing device; the upper light source comprises a light source support, a light bar and a light bar lifting cylinder, the light source support is arranged on two sides of the detection frame, the light bar lifting cylinder is vertically arranged on the light source support, and the light bar is longitudinally arranged at the shaft end of the light bar lifting cylinder; the light bars at the two sides are symmetrically positioned at the two sides of the upper CCD photographing device; the front side light source is also a light bar and is transversely arranged at the front side of the detection rack; the lower side light source is a lamp panel which is paved below the rotating disc and faces to the discharging position.

7. The four-position display screen detection mechanism of claim 1, wherein: the rotary disk is provided with four rotary stations which are distributed in a cross shape.

8. The four-position display screen detection mechanism of claim 1, wherein: the transfer device comprises a transfer bracket, a first transfer component, a second transfer component, a transverse driving device and a longitudinal driving device, wherein the first transfer component is arranged on the transfer bracket and used for transferring the cleaned display screen to the fine positioning device, the second transfer component is used for transferring the display screen which is accurately positioned on the fine positioning device to the discharging position, the transverse driving device is used for driving the first transfer component and the second transfer component to transversely move, and the longitudinal driving device is used for driving the second transfer component to longitudinally move; the transfer bracket is positioned between the fine positioning device and the rotating disc, the transverse driving device is in a mode of combining a motor, a screw rod and a sliding block, the motor drives the screw rod to rotate, the sliding block transversely moves, a cross beam is arranged on the sliding block, and the first transfer assembly is arranged on the cross beam; the longitudinal driving device is longitudinally arranged on the cross beam and is also in a mode of combining a motor, a screw rod and a sliding block, and the second transferring assembly is arranged on the sliding block; the first transfer assembly comprises a first vertical cylinder, a first longitudinal cylinder and two groups of suckers, the first vertical cylinder is vertically arranged on the cross beam, a connecting plate is arranged at the shaft end of the first vertical cylinder, and the first group of suckers are fixed at one end of the lower surface of the connecting plate; the first longitudinal cylinder is longitudinally arranged on the lower surface of the connecting plate, the second group of suckers are arranged at the shaft ends of the first longitudinal cylinder, and the second group of suckers are driven by the first longitudinal cylinder to approach or depart from the first group of suckers so as to realize the adsorption transfer of the display screens with different placement intervals; the second transferring assembly comprises a motor, a belt pulley group and two groups of suckers, the motor is arranged on a sliding block of the longitudinal driving device, the belt pulley group is vertically arranged on the sliding block and connected with the motor, a sliding support plate is connected on a belt of the belt pulley group, and the suckers can be arranged at the lower end of the sliding support plate at intervals in an elastic floating mode.

9. The four-position display screen detection mechanism of claim 1, wherein: the conveying and discharging transfer device comprises a transverse transfer assembly and a rotary discharging assembly, wherein the transverse transfer assembly is positioned beside the rotary disc and comprises a transverse transfer bracket, a transverse driving motor, a belt pulley group, a sliding plate, a cantilever beam and a transfer sucker; the transverse transfer support is transversely arranged on the detection rack, the transverse driving motor is arranged at the end part of the transverse transfer support, the belt wheel set is transversely arranged on the transverse transfer support, and the sliding plate is slidably arranged on the transverse transfer support and is connected with a belt of the belt wheel set; the cantilever beam is longitudinally arranged on the sliding plate, the transfer sucker comprises a plurality of suckers and a lifting cylinder for driving the suckers to lift, the lifting cylinder is vertically arranged on the cantilever beam, a supporting plate capable of longitudinally covering the discharging position of a rotating station on the rotating disc is arranged at the shaft end of the lifting cylinder, and the suckers are arranged on the lower surface of the supporting plate at intervals; the rotary blanking component is positioned on the right side of the transverse transfer bracket and is provided with a rotatable receiving tray.

10. The four-position display screen detection mechanism of claim 9, wherein: the rotary blanking assembly comprises a rotary air cylinder and a receiving tray, the rotary air cylinder is arranged on the right side of the transverse transfer support, the receiving tray is arranged at the shaft end of the rotary air cylinder, and four discharging positions are respectively arranged at two ends of the receiving tray; the transfer sucker is placed on four discharging positions of the receiving tray after four display screens are synchronously adsorbed on four discharging positions on the rotating disc, and the rotating cylinder drives the receiving tray to rotate, so that the discharging positions at two ends of the transfer sucker can alternately correspond to the transfer sucker for receiving operation.