CN210376183U

CN210376183U - Polarizer detection device

Info

Publication number: CN210376183U
Application number: CN201921162133.3U
Authority: CN
Inventors: 石鹏飞; 李想; 饶钦; 贾霞彦; 胡文平; 赵莹; 乔雷
Original assignee: CETC Fenghua Information Equipment Co Ltd
Current assignee: CETC Fenghua Information Equipment Co Ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-04-21
Anticipated expiration: 2029-07-23

Abstract

The utility model relates to the technical field of polarizers, in particular to a polarizer detection device, which aims to solve the technical problem of low detection quality in the prior machine vision detection of polarizers. The following technical scheme is adopted: including a belt assembly line, which consists of a frame and a plurality of conveying sections located on the frame, and a first gap is formed between two adjacent conveying sections; and a flattening mechanism, a flattening mechanism Including two flattening belts, the two flattening belts form an inverted figure-eight structure, a second gap is formed between the two flattening belts, and each flattening belt is driven and supported by a high-rotation roller and a low-rotation roller, and is pressed. The transmission direction of the flat belt is opposite to the transmission direction of the belt assembly line, and a gap is formed between the low-rotation roller and the belt of the belt assembly line; it also includes a detection mechanism, and the detection mechanism includes an installation frame. The top of the installation frame is installed with a camera, and a light source is installed at the bottom. The camera is located directly above the second void, and the light source is located directly below the first void.

Description

Polaroid detection device

Technical Field

The utility model relates to a polaroid technical field specifically is a polaroid detection device.

Background

The rolled polarizing material undergoes a series of processing techniques, which cause various defects to the inner layer or surface of the polarizer, whether the polarizer itself is responsible or unpredictable during processing. These defects mainly include marks, scratches, creases, foreign matter, bubbles, surface scratches, smudges, and the like. In addition, the addition of the code spraying requirement on the surface of the polarizer also brings about the defects of poor code spraying, such as incomplete characters, incorrect characters and unequal characters. The detection of these defects generally employs two approaches, the first is manual detection, and the second is machine vision detection. The manual detection is to identify various defects through eyes of operators, the detection capability completely depends on the level of the detector, and the detection efficiency is often not high. In comparison, the machine vision detection algorithm is fixed, the detection capability is stable, the efficiency is high, and the problem that the manual work can be tired does not exist. The existing machine vision detection mainly detects through a camera, when a polaroid is conveyed to the lower part of the camera, the phenomenon of insufficient flattening can often occur, so that certain deviation can exist in the detection of the camera, the detection quality is reduced, and the phenomenon of error detection is easy to occur.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving the technical problem that the detection quality is low that the machine vision of current polaroid detected the existence. Therefore, the utility model provides a polaroid detection device.

The utility model provides a technical scheme that its technical problem adopted is:

the polaroid detection device comprises a belt assembly line, wherein the belt assembly line consists of a rack and a plurality of conveying sections positioned on the rack, each conveying section comprises two rotating rollers and a belt wound on the two rotating rollers, the plurality of conveying sections are integrally driven, and a first gap is formed between every two adjacent conveying sections; the device is characterized by further comprising at least one flattening mechanism located above the belt production line, wherein the flattening mechanism comprises two flattening belts which are symmetrical about a vertical plane where the first gap is located, the two flattening belts form an inverted splayed structure, a second gap which is vertically corresponding to the first gap and used for detecting the polaroid is formed between the two flattening belts, each flattening belt is supported through transmission of a high rotating roller and a low rotating roller, the transmission direction of the flattening belt is opposite to the transmission direction of the belt production line, and a gap for the polaroid to pass through is formed between the low rotating roller and the belt of the belt production line; still include and flatten the detection mechanism that the mechanism one-to-one set up, detection mechanism includes the installing frame, the installing frame with the vertical correspondence in first space, the camera is installed at the top of installing frame, the light source is installed to the bottom, the camera is located the second space directly over, the light source is located first space under.

The utility model has the advantages that:

1) the utility model provides a polaroid detection device is provided with flattening mechanism in the position that carries out the polaroid and detect, when the polaroid detects, can flatten the polaroid under flattening mechanism's effect and then get into the detection zone and detect, has improved the quality that detects greatly, has avoided the condition emergence of false positive detection.

2) The utility model discloses a mechanism that flattens set up the belt that flattens of the inclined plane formula of two symmetries. Firstly, the transmission of the flattening belt can provide power for the polaroid; secondly, the two belts form an inverted splayed structure, so that the polarizer can be guided to be prepared for entering a gap to be flattened, and the flattening success rate is improved; moreover, the inverted-splayed structure can press the opposite sides of the polarizer, so that the flatness of the middle part to be detected is high, and the detection quality is further ensured.

3) The utility model discloses a mechanism that flattens simple structure, the good reliability, simple to operate, and easily with belt assembly line common drive, the practicality is strong, easily promotes.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural view of the belt line of the present invention;

FIG. 3 is a schematic structural view of the pressing mechanism of the present invention;

fig. 4 is a schematic structural diagram of the detection mechanism of the present invention;

fig. 5 is a schematic diagram of the movement of the present invention;

FIG. 6 is a schematic view of the combined structure of the waste rejecting and conveying section and the waste collecting device of the present invention;

FIG. 7 is a front view of the combined structure of the waste rejecting and conveying section and the waste collecting device of the present invention;

FIG. 8 is a schematic structural view of the waste rejecting conveyor section of the present invention;

fig. 9 is a schematic structural view of the waste collecting device of the present invention.

Detailed Description

Referring to fig. 1 to 5, the utility model discloses a polaroid detection device, including the belt assembly line, the belt assembly line comprises frame 1 and a plurality of transport section 2 that is located frame 1, every transport section 2 all includes two live-rollers 2-1 and around adorning belt 2-2 on two live-rollers 2-1, the rotation of live-rollers 2-1 drives the transmission of belt 2-2, the integrative transmission of a plurality of transport section 2 guarantees the wholeness of whole belt assembly line, and be formed with first space 2-3 between two adjacent transport section 2, first space 2-3 here is for detecting the polaroid usefulness, the personnel in the field know, this space setting can not too big destroy the continuity of polaroid transmission, also can not lead to unable completion detection too little, generally set up to 10mm can; the device also comprises at least one flattening mechanism 3 positioned above the belt production line, wherein the flattening mechanism 3 comprises two flattening belts 3-1 which are symmetrical about the vertical plane where the first gap 2-3 is positioned, the two flattening belts 3-1 form an inverted V-shaped structure, a second gap 3-2 which is vertically corresponding to the first gap 2-3 and is used for detecting the polaroid is formed between the two flattening belts 3-1, the first gap 2-3 has the same function with the first gap 2-3 and is also used for detecting the polaroid, each flattening belt 3-1 is supported by the high rotating roller 3-3 and the low rotating roller 3-4 in a transmission way, and the inverted V-shaped structure formed only by the arrangement of the high and low rotating rollers 3-4 drives the flattening belts 3-1 to rotate, the transmission direction of the flattening belt 3-1 is opposite to that of the belt production line, and the transmission directions are opposite, and are seen from the front side of the belt, because the upper surface of the polaroid is contacted with the lower surfaces of the two flattening belts 3-1, and the lower surface of the polaroid is contacted with the upper surface of the flattening belt 3-1, the transmission directions are opposite, so that the stress directions of the upper surface and the lower surface of the polaroid are consistent, a gap 3-5 for the polaroid to pass is formed between the low rotating roller 3-4 and the belt 2-2 of the belt production line, and the polaroid is flattened by the gap 3-5, wherein the gap 3-5 is too large, the flattening effect is lost, the gap 3-5 is too small, and the polaroid cannot pass through, which is easy to design by a person in the field; still include and flatten the detection mechanism 4 that mechanism 3 one-to-one set up, detection mechanism 4 includes installing frame 4-1, installing frame 4-1 with first space 2-3 is vertical to be corresponded, camera 4-2 is installed at the top of installing frame 4-1, light source 4-3 is installed to the bottom, camera 4-2 is located second space 3-2 directly over, light source 4-3 is located first space 2-3 directly under. During the use, the polaroid is passed through the belt assembly line from last process and is transmitted to this process, and at this detection process, every detection mechanism 4 all disposes one and flattens mechanism 3, and every entering detection position carries out the polaroid that detects and all must flatten through flattening mechanism 3 earlier, and because two splayed structures of flattening belt 3-1, can flatten after leading to the polaroid, and two belts 3-1 that flatten can let the polaroid both ends all be flattened, make the middle part position of waiting to detect level, improved the quality that detects greatly, it is this the utility model discloses an innovation place.

Further, the low rotating rollers 3-4 are rotatably mounted on the first mounting seats 3-6, the high rotating rollers 3-3 are rotatably mounted on the second mounting seats 3-7, the first mounting seats 3-6 can be vertically adjusted and mounted on the rack 1, so that the size of the gap 3-5 can be adjusted, the polarizer pressing machine is suitable for polarizers with different thicknesses, the second mounting seats 3-7 can be horizontally or vertically adjusted and mounted on the rack 1, and the pressing belt 3-1 can be tensioned through horizontal or vertical adjustment of the second mounting seats 3-7. The up-down adjustment and the left-right adjustment are structural designs commonly used in the mechanical field, and are realized by adopting a sliding block matched with a bolt for locking or adopting common mechanical structures such as a screw rod and the like, which is easy to design by people in the mechanical field.

Furthermore, two rotating rollers 2-1 forming the first gap 2-3 extend out of the frame 1 and are provided with first gears at the ends, and a second gear meshed with the first gears is arranged at the end of the lower rotating roller 3-4. The optimized transmission structure of the flattening mechanism 3 saves a driving device and installation space on one hand, and ensures the consistency of transmission by synchronous transmission on the other hand, so that the transmission of the polaroid is smoother. The first gap 2-3 is a gap between the two conveying sections 2, and the two rotating rollers 2-1 are installed at both ends of each conveying section 2, so that the first gap 2-3 is formed by leaving a gap between the two rotating rollers 2-1, and therefore, the "two rotating rollers 2-1 forming the first gap 2-3" described herein should be easily understood and clear.

Further, the two rotating rollers 2-1 forming the first gap 2-3 are connected through a mechanical belt to realize synchronous transmission of two adjacent conveying sections 2. Therefore, the transmission of all the conveying sections 2 can be realized by only arranging one motor 5-6 in the whole production line.

Referring to fig. 6-8, further, the detecting mechanism 4 is provided with at least two, and a plurality of waste removing and conveying sections 5 inserted at the first gap 2-3 of the belt assembly line or connected to the tail of the belt assembly line are further arranged behind the detecting mechanism 4, the waste removing and conveying sections 5 comprise a driving shaft 5-1 rotatably mounted on the frame 1, a connecting frame 5-2 rotatably sleeved on the driving shaft 5-1, a driven shaft 5-3 rotatably mounted on the connecting frame 5-2 and parallel to the driving shaft 5-1, and an air cylinder 5-4 with one end hinged on the frame 1, the driving shaft 5-1 and the driven shaft 5-3 are together wound with a conveying belt 5-5, the driving shaft 5-1 is connected with a motor 5-6 for driving the driving shaft to rotate, and the upper surface of the conveying belt 5-5 is flush with the conveying bearing surface of the belt assembly line and is connected to ensure the product The air cylinder 5-4 is positioned below the connecting frame 5-2, the other end of the air cylinder is hinged to the connecting frame 5-2, and the air cylinder 5-4 drives the connecting frame 5-2 to rotate around the driving shaft 5-1 through extension to realize inclination or reset of the conveying belt 5-5; the automatic waste material sorting machine further comprises a controller, the detection mechanism 4 is electrically connected with the controller, the controller receives waste material signals of the detection mechanism 4 to judge the type of waste materials and calculates the time of the waste materials arriving at and leaving the corresponding waste material removing and conveying section 5 so as to control the corresponding air cylinder 5-4 to act. Here, the position detected by the detecting mechanism 4 is fixed, that is, the distance between the detected product and the reject conveying section 5 is fixed, and the conveying speed of the conveyor belt is also determined, so when the controller receives the detection signal, the position of the detected product is determined, and if a reject signal is received, the time for the reject to reach the reject conveying section 5 is easily obtained. During specific calculation, one edge of the product can be selected as a fixed reference point to calculate the position and the arrival time of the product. Here, the motor 5-6 drives the conveyer belt 5-5 to move continuously, and the product can advance along with the conveyer belt 5-5 under the action of static friction force; the cylinder 5-4 is contracted to enable the connecting frame 5-2 to move downwards around the driving shaft 5-1, so that the driven shaft 5-3 also moves downwards, the conveyer belt 5-5 becomes a downward inclined state, and the discharging edge of the conveyer belt 5-5 is disconnected with a subsequent assembly line, so that the waste materials can fall off from the conveyer belt 5-5 under the action of static friction force to finish removal. After the elimination is finished, the cylinder 5-4 is extended, the conveyer belt 5-5 is reset and restored to be horizontal, and the discharging edge of the conveyer belt is connected with a subsequent assembly line, so that the continuous conveying of qualified products is realized.

When in use, the waste material is removed by the following two steps:

in the first step, the detection mechanism 4 detects the product on the assembly line and sends a detection signal to the controller. It is clear to those skilled in the art that the specific test herein of why the condition is acceptable and what condition is waste varies depending on the product and the test factors.

Secondly, the controller receives the detection signal and judges, and if the detection signal is qualified, no instruction is given; if the waste materials are the waste materials, the waste materials are further judged, and each waste material removing and conveying section 5 removes one type of waste materials, so that after the controller obtains the waste material type result, two instructions, namely a contraction instruction and an extension instruction, are sent to the air cylinder 5-4 of the corresponding waste material removing and conveying section 5, and the corresponding actions are performed. The instructions for contraction and expansion are explained here with the front edge of the product as a fixed reference point. And (3) a shrink instruction: the detection position is fixed, the time for each detection is also fixed, the time for sending the detection signal is also fixed, so that the position of the front edge of the product when the detection signal is received by the controller is also determined, the distance from the position of the front edge to the discharging edge of the waste material removing and conveying section 5 when the detection signal is received is divided by the conveying speed of the conveyor belt, namely the time T1 from the detection completion of the waste material to the discharging edge of the conveyor belt, and the contraction instruction is calculated when the waste material detection signal is received, and the contraction is carried out after T1 seconds. An elongation instruction: the length of the product is fixed to be L, the conveying speed of the conveying belt is divided by L, namely the time T2 required by the waste on the conveying belt 5-5 from the beginning of removal to the completion of extraction is obtained, the elongation command is calculated when the waste detection signal is received, the elongation is carried out after T1+ T2 seconds, and the conveying belt 5-5 is reset to the recovery level. The above description is only for the instruction generation process using the front edge as a fixed reference point, and it is also possible to use other reference points or other methods to control the arrival and departure times of the waste at the waste removal transport section 5, which can be easily designed by those skilled in the art. In addition, the controller needs to integrate a simple operation module and related algorithms to realize the above functions, which is also well known by those skilled in the art.

Referring to fig. 6, 7 and 9, a scrap collecting device 6 is further included, positioned in correspondence with each scrap removal conveyor section 5 and below the conveyor belts 5-5. Preferably, the waste collecting device 6 comprises a material collecting box 6-1 arranged corresponding to the discharging position of the conveying belt 5-5, a linear motor 5-6 for driving the material collecting box 6-1 to ascend and descend is connected below the material collecting box 6-1, a height sensor for detecting the height of the piled materials is arranged on the material collecting box 6-1 and electrically connected with a controller, and the controller receives a height signal of the height sensor so as to control the linear motor 5-6 to move to realize the ascending and descending of the material collecting box 6-1. The height sensor detects the height of waste in the material collecting box 6-1, controls the material collecting box 6-1 to move downwards in real time, and ensures that the material collecting box 6-1 can be accommodated at a proper angle when the conveying belt 5-5 discharges materials at a fixed position.

Further, the material collecting box 6-1 is a cuboid structure with an opening on one side and the top, the box bottom of the material collecting box 6-1 is an inclined plane, and the inclined plane inclines downwards from the opening side to the opposite surface of the opening side. In this way, the waste material entering the collection box 6-1 can automatically slide to a fixed corner, and the regularity of waste material collection is ensured.

Furthermore, a rotary cylinder is fixed at the end part of an output shaft of the linear motor 5-6, a rotary disc 6-2 is fixed on the rotary cylinder, a plurality of material collecting boxes 6-1 are circumferentially and uniformly distributed on the rotary disc 6-2, and the controller receives a height signal of the height sensor so as to control the rotary cylinder to act to realize the replacement of the material collecting boxes 6-1. When the height sensor detects that the height of the collected waste reaches the set requirement, the collecting box 6-1 is full of the waste, the rotary disc 6-2 is switched, and the other collecting box 6-1 is replaced to collect the waste, so that the collecting amount is greatly improved, and the waste collecting box is tidy and ordered and is convenient to arrange.

While the invention has been particularly shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. Polaroid detection device, its characterized in that: the belt production line comprises a belt production line, wherein the belt production line is composed of a rack (1) and a plurality of conveying sections (2) positioned on the rack (1), each conveying section (2) comprises two rotating rollers (2-1) and a belt (2-2) wound on the two rotating rollers (2-1), the plurality of conveying sections (2) are integrally driven, and a first gap (2-3) is formed between every two adjacent conveying sections (2); still include at least one mechanism (3) of flattening that is located belt assembly line top, the mechanism (3) of flattening include about two belts (3-1) of flattening of first space (2-3) place vertical plane symmetry, two belts (3-1) of flattening form the splayed structure of falling, be formed with between two belts (3-1) of flattening and be used for detecting the second space (3-2) of polaroid with first space (2-3) vertical correspondence, every belt (3-1) of flattening all supports through high live-rollers (3-3), low live-rollers (3-4) transmission, and the transmission direction of the flattening belt (3-1) is opposite to the transmission direction of the belt production line, a gap (3-5) for the polaroid to pass through is formed between the low rotating roller (3-4) and the belt (2-2) of the belt production line; still include and flatten detection mechanism (4) that mechanism (3) one-to-one set up, detection mechanism (4) include installing frame (4-1), installing frame (4-1) with first space (2-3) vertical correspondence, camera (4-2) are installed at the top of installing frame (4-1), light source (4-3) are installed to the bottom, camera (4-2) are located second space (3-2) directly over, light source (4-3) are located first space (2-3) under.

2. The polarizer inspection device of claim 1, wherein: the low rotating rollers (3-4) are rotatably arranged on the first mounting seats (3-6), the high rotating rollers (3-3) are rotatably arranged on the second mounting seats (3-7), the first mounting seats (3-6) can be vertically adjusted and arranged on the rack (1), and the second mounting seats (3-7) can be horizontally or vertically adjusted and arranged on the rack (1).

3. The polarizer inspection device of claim 1, wherein: two rotating rollers (2-1) forming the first gap (2-3) extend out of the rack (1), first gears are mounted at the end parts of the two rotating rollers, and second gears meshed with the first gears are mounted at the end parts of the lower rotating rollers (3-4).

4. The polarizer inspection device of claim 3, wherein: the two rotating rollers (2-1) forming the first gap (2-3) are connected through a mechanical belt to realize synchronous transmission of two adjacent conveying sections (2).

5. The polarizer inspection device according to any of claims 1 to 4, wherein: the device is characterized in that the number of the detection mechanisms (4) is at least two, a plurality of waste removing and conveying sections (5) which are inserted in first gaps (2-3) of the belt assembly line or are continuously connected with the tail part of the belt assembly line are arranged behind the detection mechanisms (4), each waste removing and conveying section (5) comprises a driving shaft (5-1) rotatably mounted on the rack (1), a connecting frame (5-2) rotatably sleeved on the driving shaft (5-1), a driven shaft (5-3) rotatably mounted on the connecting frame (5-2) and parallel to the driving shaft (5-1), and a cylinder (5-4) one end of which is hinged on the rack (1), the driving shaft (5-1) and the driven shaft (5-3) are jointly wound with the conveying belts (5-5), and the driving shaft (5-1) is connected with a motor (5-6) for driving the driving shaft to rotate, the upper surface of the conveying belt (5-5) is flush with and connected with a conveying bearing surface of a belt assembly line to ensure continuous conveying of products, the air cylinder (5-4) is located below the connecting frame (5-2), the other end of the air cylinder is hinged to the connecting frame (5-2), and the air cylinder (5-4) drives the connecting frame (5-2) to rotate around the driving shaft (5-1) through extension to realize inclination or reset of the conveying belt (5-5); the waste material sorting and conveying device is characterized by further comprising a controller, the detection mechanism (4) is electrically connected with the controller, the controller receives waste material signals of the detection mechanism (4) to judge the type of waste materials and calculate the time of the waste materials arriving at and leaving the corresponding waste material removing and conveying section (5) so as to control the corresponding air cylinder (5-4) to act.

6. The polarizer inspection device of claim 5, wherein: the waste material collecting device is arranged corresponding to each waste material removing and conveying section (5) and is positioned below the conveying belts (5-5).

7. The polarizer inspection device of claim 6, wherein: the waste collecting device (6) comprises a material collecting box (6-1) arranged corresponding to the discharging position of the conveying belt (5-5), a linear motor (6-3) for driving the material collecting box (6-1) to ascend and descend is connected below the material collecting box (6-1), a height sensor for detecting the height of stacked materials is arranged on the material collecting box (6-1), the height sensor is electrically connected with a controller, and the controller receives a height signal of the height sensor so as to control the linear motor (6-3) to move to realize the ascending and descending of the material collecting box (6-1).

8. The polarizer inspection device of claim 7, wherein: the material collecting box (6-1) is of a cuboid structure with one side surface and an opening at the top, the box bottom of the material collecting box (6-1) is an inclined surface, and the inclined surface inclines downwards from the opening side surface to the opposite surface of the opening side surface.

9. The polarizer inspection device of claim 8, wherein: the end part of an output shaft of the linear motor (6-3) is fixedly provided with a rotary cylinder, the rotary cylinder is fixedly provided with a rotary table (6-2), the rotary table (6-2) is circumferentially and uniformly provided with a plurality of material collecting boxes (6-1), and the controller receives a height signal of the height sensor so as to control the action of the rotary cylinder to realize the replacement of the material collecting boxes (6-1).