CN102364332B - Polarizing plate movement detection apparatus and method thereof - Google Patents

Abstract

The invention provides a polarizing plate movement detection device and method. The polarizer movement detection device includes a support body and an inspection table, the support body is pivotally connected with a cylinder; Concave shape; one side of the inspection table is pivotally connected to the support body, and the other side of the inspection table is pivotally connected to the piston rod of the cylinder. Using this detection device, the surface of polarizing plates and other film products below 26 inches can be detected more effectively and quickly, and an effective inspection area can be formed without moving the product, and the action elements can be simplified, which can not only improve the detection efficiency, but also Ensure product cleanliness.

Description

Device and method for detecting movement of polarizing plate

technical field

The present invention relates to a polarizing plate detection device and method, in particular to a polarizing plate movement detection device and method.

Background technique

The appearance inspection of the polarizer is usually carried out on the work table through the reflected light of the fluorescent lamp. During the detection process, due to certain lighting conditions, the position of the product needs to be constantly changed to form a bright detection area on the surface of the polarizer. This area is the effective detection area of the polarizer, and defects such as scratches and embossing on the polarizer can be detected more easily in this light area. Such a conventional detection method needs to continuously pull the product during the detection process, which not only increases the waste of time for the action, but also affects the cleanliness of the product to a certain extent, and the generation of particles will form other components in the subsequent packaging and transportation. bad.

Contents of the invention

The object of the present invention is to provide a polarizing plate movement detection device and method for improving productivity and ensuring product quality.

A polarizer movement detection device, the detection device includes a support body and an inspection table, the support body is pivotally connected to a cylinder; the inspection table includes a transport mechanism, a plurality of polarizers to be inspected The conveying mechanism has a downward concave shape; one side of the inspection table is pivotally connected with the support body, and the other side of the inspection table is pivotally connected with the piston rod of the air cylinder.

Further, the detection device also includes two arc-shaped fixed arms installed on the longitudinal sides of the support body and the inspection table; each arc-shaped fixed arm is an arc-shaped plate with a long slot in the middle, which The upper end is connected with the inspection table, and the lower part extends into a supporting device; the two supporting devices are respectively fixed on both sides of the supporting body.

Further, the detection device further includes a bracket fixed on one side of the support body, and a fluorescent lamp located above the plurality of polarizers to be tested is arranged on the bracket.

Further, the detection device further includes a reflection plate located under the fluorescent lamp on the other side of the inspection table.

Further, the conveying mechanism has two shafts, a plurality of rollers fixedly installed on each shaft and two conveyor belts; a plurality of circular grooves are opened on the outer surface of each roller; corresponding The conveyor belt is sleeved on the corresponding circular groove of the roller; the background plate is located between the upper and lower parts of the conveyor belt, close to the upper surface of the roller; the conveyor belt is supported on both ends of the polarizer, The middle part of the polarizing plate is naturally concave, forms an arc, and is supported on the background plate.

A method for detecting movement of a polarizing plate, comprising the following steps:

Step 1: Adjust the rotation angle adjustment knob of the inspection table so that the piston rod of the cylinder supporting the body pushes the inspection table to rotate at a certain angle around the hinge shaft that is hingedly connected to the front side of the inspection table and the support body; when the inspection table rotates to the optimum angle, Stop adjusting the inspection table and turn the angle adjustment knob;

Step 2: Adjust the drive motor inverter adjustment knob of the conveying mechanism, and the conveyor belt transmits the polarizer at a limited speed; the inspector sits on a seat with a suitable height to inspect the polarizer;

The polarizing plate movement detection method of the present invention also includes:

Before performing step 1, first loosen the positioning adjustment bolts of the two support devices; after performing step 1, tighten the positioning adjustment bolts of the two support devices, and the two arc-shaped fixed arms connect and fix the inspection table with the support body;

Before proceeding to step 2, first adjust the illuminance adjustment knob of the fluorescent lamp to make the illuminance of the fluorescent lamp appropriate.

Using this detection device, the surface of polarizing plates and other film products below 26 inches can be detected more effectively and quickly, and an effective inspection area can be formed without moving the product, and the action elements can be simplified, which can not only improve the detection efficiency, but also Ensure product cleanliness. In order to further understand the features and technical content of the present invention, please refer to the following detailed description and accompanying drawings of the present invention, but these descriptions and accompanying drawings are only used to illustrate the present invention, not to limit the scope of rights of the present invention. any restrictions.

Description of drawings

Fig. 1 is a side view of a polarizing plate movement detection device of the present invention.

FIG. 2 is a schematic diagram of a speed regulator in the polarizer movement detection device of the present invention.

Fig. 3 is a schematic diagram of three polarizing plate movement detection devices of the present invention installed side by side.

FIG. 4 is a schematic diagram of the position of the background plate of the polarizing plate movement detection device of the present invention.

FIG. 5 is a schematic diagram of the polarizer placed on the conveyor belt in the polarizer movement detection device of the present invention.

Detailed ways

Please refer to FIG. 1 and FIG. 2 at the same time. The preferred embodiment of the polarizer movement detection device of the present invention includes a support body 1, an inspection table 2 hinged to the support body 1, and a fixed to the support body 1. Side support 3, a DBEF (Dual Brightness Enhancement Film) reflector 4, several ion blowers 5 arranged around the detection device. A polarizer 6 is placed on the inspection table 2 for detection.

Please also refer to FIG. 3 , the supporting body 1 is provided with a governor 10 , two arc-shaped fixed arms 20 , and a cylinder 40 .

The governor 10 is provided with a number of adjustment knobs, for example, the fluorescent lamp illumination adjustment knob 11, the inspection table lifting angle adjustment knob 12, the forward and reverse movement selection knob 13 of the conveyor belt, and the drive motor frequency converter adjustment knob 14 of the conveying mechanism.

Each arc-shaped fixing arm 20 is an arc-shaped plate with a long slot in the middle. Two arc-shaped fixing arms 20 are respectively located on the longitudinal sides of the supporting body 1 . The upper end of the arc-shaped fixed arm 20 is connected with the inspection table 2, and the lower part extends into a supporting device. Each supporting device is made up of a supporting plate, a pressing plate and a positioning adjusting bolt. The positioning adjustment bolt passes the through hole on the pressing plate and the slot on the arc fixed arm 20 and is screwed in the threaded through hole on the support plate. Two support plates are respectively fixed on both sides of the support body 1 .

The cylinder 40 has a piston rod 24 , the piston rod 24 is hingedly connected to the rear side of the inspection table 2 , and the cylinder 40 is hingedly connected to the supporting body 1 .

The inspection table 2 is provided with a conveying mechanism 21 and a background plate 22 .

The conveying mechanism 21 has two shafts 211 , a plurality of rollers 212 and two conveyor belts 213 fixedly mounted on each shaft 211 . A plurality of annular grooves are formed on the outer surface of each roller 212 . A conveyor belt 213 is sheathed on the corresponding circular grooves of the corresponding rollers 212 on the two shafts 211 . As shown in FIG. 5 , a conveyor belt 213 is sheathed on each of the two rollers 212 near two ends of the shaft 211 . The background plate 22 is located between the upper and lower parts of the conveyor belt 213 , close to the upper surface of the roller 212 . Please refer to FIG. 4 and FIG. 5 at the same time. The conveyor belt 213 supports both ends of the polarizer 6 , so that the middle part of the polarizer 6 is naturally concave due to gravity, forming an arc, and supported on the background plate 22 . When the background plate 22 is white, the reflection effect is better. The distance between the two ends of the polarizer 6 and the conveyor belt 21 is 10 to 20 mm. According to the difference in width of the polarizer 6 , the two conveyor belts 213 can be sleeved on different circular grooves, so that the distance between the two conveyor belts 213 corresponds to the width of the polarizer 6 .

The conveyor belt 213 is tensioned through two shafts 211, one shaft 211 is a passive drive shaft, and the other shaft 211 is an active drive shaft, and the active drive shaft 211 moves the selection knob 13 forward and reverse through the conveyor belt of the governor 10 Driven by the speed-regulating motor 15 controlled by the drive motor frequency converter adjusting knob 14 of the conveying mechanism, the driving drive shaft and the speed-regulating motor 15 are connected by a toothed conveyor belt 16 .

The front side of the inspection table 2 is hingedly connected with the support body 1 , and the rear side of the inspection table 2 is hingedly connected with the piston rod 24 .

The bracket 3 is provided with a daylight lamp 30 above the supporting body 1 for illuminating the polarizer 6 to be tested. The ion fan 5 can reduce the static electricity generated in the detection process.

The reflector 4 is placed between the fluorescent lamp 30 and the polarizer 6 , as shown in FIG. 1 . In this way, the light from the fluorescent lamp 30 is reflected by the reflector 4 and finally shines on the polarizer 6 . Therefore, the light intensity on the surface of the polarizing plate 6 is enhanced, and the reflected light can evenly irradiate the polarizing plate 6 , so that the detection effect is better.

The polarizing plate 6 is concave during the conveying process, forming a concave lens shape, so that the reflector 4 reflects the light emitted by the fluorescent lamp 30 in parallel to the concave polarizing plate 6, and the concave polarizing plate 6 reflects the parallel light rays like a concave lens. Focusing on one point, the human eye checks the polarizing plate 6 at this point, and can see the corresponding surface of the polarizing plate 6 very clearly.

A preferred embodiment of the detection method for polarizer movement of the present invention includes the following steps:

Step 1: Adjust the rotation angle adjustment knob 12 of the inspection table so that the piston rod 24 of the cylinder 40 of the support body 1 pushes the inspection table 2 to rotate at a certain angle around the hinge shaft that is hingedly connected to the support body 1 at the front side of the inspection table 2; when the inspection table 2 After turning to the optimum angle, stop adjusting the rotation angle adjustment knob 12 of the examination table;

Step 2: Adjust the drive motor inverter adjustment knob 14 of the conveying mechanism 21, and the conveyor belt 213 transmits the polarizer 6 at a limited speed; the inspector sits on a seat with a suitable height to inspect the polarizer 6;

The polarizing plate movement detection method of the present invention also includes:

Before performing step 1, first loosen the positioning adjustment bolts of the two support devices; after performing step 1, tighten the positioning adjustment bolts of the two support devices, and the two arc-shaped fixed arms 20 connect and fix the inspection table 2 with the support body 1;

Before step 2, first adjust the illuminance adjustment knob 11 of the fluorescent lamp to make the illuminance of the fluorescent lamp suitable.

The overall size of the polarizer movement detection device in a preferred embodiment of the present invention is 1250*800*800 cubic meters. The conveyor belt 213 has a diameter of 10 mm. The vertical distance between the fluorescent lamp 30 and the desktop is 550-600 meters. The vertical distance between the reflector 4 and the desktop is 300 mm. The projection distance between the front edge of the conveyor belt 213 and the fluorescent lamp 30 on the inspection table 2 is 0. The vertical distance between the conveyor belt 213 and the inspector's eyes is 450 mm. The projection distance between the rear edge of the conveyor belt 213 and the inspector's eyes on the inspection table 2 is 0. The polarizer 6 is arc-shaped, and its radius is 560-600 mm.

The fluorescent lamp illuminance measurement result of the best detection environment is that the illuminance of the inspection table 2 is measured to be 1150 lux (lux) by using the combination of fluorescent lamps and reflectors. The device forms the best detection area where the illuminance of the human eye is 600lux.

A preferred embodiment of the polarizer movement detection device of the present invention further includes a counter 8 arranged on the support 3 for counting the detected polarizers 6 .

Three detection devices are placed next to each other, and an inspector is in front of each detection device to check each polarizer sequentially. The above descriptions are only examples of the present invention, and are not intended to limit the patent scope of the present invention.

Claims (8)

1. A polarizing plate movement detection device, characterized in that the detection device comprises a support body and an inspection table, the support body is pivotally connected with a cylinder; the inspection table includes a conveying mechanism, and the conveying The mechanism has two shafts, a plurality of rollers fixedly installed on each shaft, and two conveyor belts, and the conveyor belts are sleeved on the corresponding rollers on the two shafts; the conveyor belts are supported on multiple polarizers to be tested. two ends, so that the middle part of the polarizer is naturally concave, forming an arc; one side of the inspection table is pivotally connected with the support body, and the other side of the inspection table is pivotally connected with the piston rod of the cylinder connect. 2. The polarizing plate movement detection device according to claim 1, characterized in that, the detection device also includes two arc-shaped fixed arms installed on the supporting body and the longitudinal sides of the inspection table; each arc-shaped The fixed arms are all arc-shaped plates with a long slot in the middle, the upper end of which is connected to the inspection table, and the lower parts extend into a supporting device; the two supporting devices are respectively fixed on both sides of the supporting body. 3. The polarizing plate movement detection device according to claim 2, characterized in that, the detection device also includes a bracket fixed on one side of the supporting body, and the bracket is provided with a fluorescent lamp above the polarizer. 4. The polarizing plate movement detection device according to claim 3, wherein the detection device further comprises a reflective plate located under the fluorescent lamp on the other side of the inspection table. 5 . The polarizer movement detection device according to claim 4 , wherein the detection device further comprises a background plate located in the conveying mechanism. 6 . 6. The polarizing plate movement detection device as claimed in claim 5, wherein a plurality of circular grooves are arranged on the outer surface of each roller; the corresponding circular grooves of the corresponding rollers on the two shafts are set The conveyor belt is provided; the background plate is located between the upper and lower parts of the conveyor belt, close to the upper surface of the roller; the middle part of the polarizer is supported on the background plate. 7. A polarizing plate movement detection method, used in the polarizing plate movement detection device according to any one of claims 1-6, characterized in that it comprises the following steps: Step 1: Adjust the rotation angle adjustment knob of the inspection table so that the piston rod of the cylinder supporting the body pushes the inspection table to rotate at a certain angle around the hinge shaft that is hingedly connected to the front side of the inspection table and the support body; when the inspection table rotates to the optimum angle, Stop adjusting the inspection table and turn the angle adjustment knob; Step 2: Adjust the adjusting knob of the frequency converter of the drive motor of the conveying mechanism, and the conveyor belt transports the polarizer at a limited speed; the inspector sits on a seat with a suitable height to inspect the polarizer. 8. The polarizing plate movement detection method according to claim 7, further comprising: Before performing step 1, first loosen the positioning adjustment bolts of the two support devices; after performing step 1, tighten the positioning adjustment bolts of the two support devices, and the two arc-shaped fixed arms connect and fix the inspection table with the support body; Before proceeding to step 2, first adjust the illuminance adjustment knob of the fluorescent lamp to make the illuminance of the fluorescent lamp appropriate.