CN112147159A

CN112147159A - Film defective pixel identification and sorting system

Info

Publication number: CN112147159A
Application number: CN202011343120.3A
Authority: CN
Inventors: 宋拥军; 伍锡焱; 吴家斌; 赵政; 骆家诚
Original assignee: Huqiu Imaging Technologies Suzhou Co ltd
Current assignee: Huqiu Imaging Technologies Suzhou Co ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2020-12-29
Also published as: CN216225497U

Abstract

The invention provides a film dead pixel identification and sorting system, belonging to the technical field of equipment for carrying thin or filament materials, comprising: the film cutting machine comprises a film reel, a cutting mechanism, a scanning mechanism and a sorting mechanism, wherein the scanning mechanism is arranged between the film reel and the cutting mechanism and is provided with a plurality of industrial cameras for scanning a film to be cut, and the industrial cameras are sequentially arranged at intervals along the width direction of the film; the film dead pixel identifying and sorting system of the invention integrally detects the film through the scanning mechanism before the film is cut, so that the structure of the scanning mechanism is simpler, the film is rapidly detected, the structure of the whole system is simple, and the cost is reduced.

Description

Film defective pixel identification and sorting system

Technical Field

The invention relates to the technical field of equipment for conveying thin or filament materials, in particular to a film defective pixel identification and sorting system.

Background

In the production process of the medical film, the film has bad spots due to defects of a substrate, dust adsorption during coating, coating defects or scratches in the conveying process and the like. At the position of the dead pixel on the film, the image can not be displayed, so that the image effect can not meet the requirement, and even misdiagnosis can be caused. Therefore, after the film is cut, it is generally necessary to perform screening to remove the defective film.

In the prior art, after a film is generally cut, the film is manually screened one by one, so that unqualified products are removed.

However, after the film is cut, the film is detected one by one, so that the detection efficiency is low, and even if a detection device is adopted, the structure is complex, so that the cost of the detection system is high.

Disclosure of Invention

Therefore, the technical problem to be solved by the invention is to overcome the defects of low detection efficiency, complex structure and high cost of the sorting system in the prior art, thereby providing a film dead pixel identification sorting system.

In order to solve the above technical problem, the present invention provides a film dead pixel identification and sorting system, comprising:

the film reel is used for arranging a large roll of film to be cut;

the cutting mechanism is arranged at the downstream of the film reel and used for receiving the film on the film reel and cutting the film;

the scanning mechanism is arranged between the film reel and the cutting mechanism and is provided with a plurality of industrial cameras for scanning the film to be cut, and the industrial cameras are sequentially arranged at intervals along the width direction of the film;

the sorting mechanism is arranged at the downstream of the cutting mechanism and is provided with a plurality of waste film sorting devices corresponding to the number of the cut films in the transverse direction, and unqualified films are sorted into a waste film collecting box through the waste film sorting devices;

the scrap sorting apparatus comprises: the film tensioning device comprises a shell, a first tensioning device and a second tensioning device, wherein the shell is arranged below a moving path of a film, a conveying belt is arranged on the upper surface of the shell, and the first tensioning device is arranged below the conveying belt;

the first tensioning device comprises: the main shaft is rotatably arranged on the mounting rack below the main shaft, a through hole for arranging the main shaft on the mounting rack is a strip-shaped hole extending in the vertical direction, a compression spring is arranged below the strip-shaped hole, and the main shaft can move up and down in the strip-shaped hole through the compression spring;

the shell is also internally provided with a guide angle capable of turning upwards, when the guide angle turns upwards, the tip end of the guide angle extends upwards to block the moving path of the film, and the guide angle guides the film downwards so that the film is sorted to a waste film collecting box;

and a driving device is further arranged in the shell and is used for driving the guide angle to rotate.

Optionally, the cutting mechanism comprises a plurality of longitudinal hobs arranged at intervals and a transverse cutter arranged transversely.

Optionally, a motor is further arranged in the housing, and the motor is connected with the driving roller of the conveyor belt through a synchronous belt;

still be provided with the second in the casing and rise tight device, the second rises tight device and includes: the compression roller is rotatably connected to the shell through the rotating frame, a torsion spring is further arranged on a rotating shaft of the rotating frame, the compression roller is abutted to the synchronous belt through elastic force of the torsion spring, and therefore tension of the synchronous belt is kept.

Optionally, the driving device adopts an electromagnetic mechanism, and a driving end of the driving device is connected with the guide angle through a connecting rod.

Optionally, the connecting rod is rotatably connected to the housing through a rotating shaft, and the rotating shaft is provided with a bearing connected with the connecting rod.

Optionally, a support plate is arranged below the conveyor belt, and a plurality of vent holes are formed in the support plate.

Optionally, a motor is arranged in the housing and used for driving the conveyor belt to rotate.

Optionally, the guide angle is provided at a front end of the conveyor belt.

Optionally, the scanning mechanism comprises a beam spanning over a path of movement of the film, the industrial camera being disposed on the beam.

Optionally, both ends of the cross beam are detachably connected to the cutting mechanism.

The technical scheme of the invention has the following advantages:

1. the film dead pixel identification and sorting system provided by the invention has the advantages that the scanning mechanism is used for integrally detecting the film before the film is cut, the structure of the scanning mechanism is simpler, the film is rapidly detected, the structure of the whole system is simple, and the cost is reduced.

2. According to the film dead pixel identification and sorting system provided by the invention, the shell of the waste film sorting device is arranged below the moving path of the film, the waste film sorting device is provided with the guide angle capable of upwards overturning, and when the waste film is required to be sorted, the corresponding waste film can be removed from the moving path by controlling the guide angle to upwards overturn, so that the waste film can be automatically removed, and the film sorting efficiency is improved.

3. According to the film dead pixel identifying and sorting system provided by the invention, the industrial cameras of the scanning mechanism are arranged on the cross beam above the moving path of the film, and the cross beam is convenient for the sequential interval arrangement of the industrial cameras, so that the image capturing range of the industrial cameras can completely cover the whole film in the transverse direction, and the detection of the dead pixel of the film can be accurately and quickly carried out.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a front view of a film dead center identification sorting system.

Fig. 2 is a flow chart of the system of fig. 1.

Fig. 3 is a perspective view of the scanning mechanism of fig. 1.

Fig. 4 is a perspective view of the sorting mechanism of fig. 1.

Fig. 5 is a perspective view of a set of scrap sorting apparatus of the sorting mechanism of fig. 4.

Fig. 6 is a front view of the internal structure of the scrap sorting apparatus of fig. 5.

Figure 7 is a schematic view of the scrap sorting apparatus of figure 6 after the guide angle has been rotated upward.

Fig. 8 is a perspective view of the area of the device for driving the conveyor belt in the scrap sorting apparatus.

Fig. 9 is an exploded view of the first tensioning device of the motor of fig. 8.

Fig. 10 is a perspective view of the area of the means for tensioning the conveyor belt in the scrap sorting apparatus.

Fig. 11 is an exploded view of the second tensioning device of the conveyor belt of fig. 10.

FIG. 12 is a schematic diagram of the determination of the location of a dead spot by a computer when a dead spot is detected on the film.

Fig. 13 is a schematic diagram of a computer for determining a location of a defect point on a film when the defect point is detected to be located at a specific location.

Description of reference numerals:

1. a film reel; 2. a scanning mechanism; 3. a cutting mechanism; 4. a sorting mechanism; 11. large rolls of film; 21. an industrial camera; 22. a cross beam; 31. a delivery shaft; 32. a guide roller; 33. longitudinal hobbing cutters; 34. a transverse cutter; 41. a scrap sorting device; 42. a scrap collecting box; 411. a housing; 412. a conveyor belt; 413. a support plate; 414. a vent hole; 415. a guide angle; 416. an electromagnetic mechanism; 417. a connecting rod; 418. a first tensioning device; 419. a carrier roller; 420. a mounting frame; 421. a strip-shaped hole; 422. a motor; 423. a synchronous belt; 424. a second tensioning device; 425. a rotating frame; 426. and (4) pressing the rolls.

Detailed Description

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

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiment provides a film dead pixel discernment letter sorting system's embodiment, as shown in fig. 1, including film spool 1, scanning mechanism 2 that set gradually, cut mechanism 3 and letter sorting mechanism 4, be used for setting up the big book of film 11 of treating cutting on the film spool 1, cut mechanism 3 and set up the low reaches at film spool 1, the big book of film 11 on the film spool 1 stretches out the back and is connected with cutting mechanism 3, through it is right to cut mechanism 3 the film cuts. The cutting mechanism 3 is provided with a conveying shaft 31, the film is conveyed by the rotation of the conveying shaft 31, and the conveying shaft 31 conveys the film by two rotating wheels which are vertically matched at intervals.

As shown in fig. 2, the scanning mechanism 2 is controlled by a computer (PC) having a display module on the computer for displaying the number of cut films, and the number of waste films and the number of good films therein. The sorting mechanism 4 is controlled by a controller (PLC), the controller is in signal connection with the scanning mechanism 2, after the controller receives signals of the scanning mechanism 2, the controller processes the signals to calculate which piece of film corresponding to the corresponding waste sorting device 41 has a defective point, then the waste sorting device 41 is controlled to act to sort the waste into the waste collecting box 42, and qualified film is conveyed to the film collecting module.

As shown in fig. 1, the cutting mechanism 3 is provided with a guide roller 32, and the guide roller 32 is used for connecting the film and changing the conveying path of the film, thereby facilitating the cutting of the film. It still is provided with vertical hobbing cutter 33 on the mechanism 3 to cut, vertical hobbing cutter 33 has a plurality of that the interval set up, is used for vertically cutting the film through vertical hobbing cutter 33. The cutting mechanism 3 is further provided with a transverse cutter 34, and the transverse cutter 34 is transversely arranged and used for transversely cutting the film. In addition, since the scanning mechanism 2 is also provided in the cutting mechanism 3, the guide roller 32 changes the moving path of the film, so that the scanning mechanism 2 can easily scan the film. The cutting mechanism 3 can be used for cutting the large roll of film 11 into a plurality of small pieces of film through the arrangement of the longitudinal hob 33 and the transverse cutter 34, wherein the small pieces of film are of the specifications of 14in × 17in, 11in × 14in, 10in × 11in, 8in × 10in and the like commonly used, and in is short for inches.

As shown in fig. 1 and 3, the scanning mechanism 2 is disposed between the film reel 1 and the cutting mechanism 3, the scanning mechanism 2 has an industrial camera 21 for scanning a film to be cut, the resolution of the industrial camera 21 reaches 600dpi (dpi is a pixel per inch, that is, scanning precision), and it is capable of identifying a defect more than 45um on the film, the industrial camera 21 is disposed in a plurality at intervals in sequence along the width direction of the film, and in the process of conveying the film, the industrial camera 21 can detect the film in the transverse direction at one time. Specifically, the scanning mechanism 2 includes: the film cutting device comprises a cross beam 22 stretching over the moving path of the film, wherein two ends of the cross beam 22 are detachably connected to a shell of a cutting mechanism 3, a plurality of industrial cameras 21 are arranged on the cross beam 22, the moving film below is imaged by the industrial cameras 21, and then whether the film has a dead spot or not is judged through image processing of a computer. When a defective portion exists on the moving film, a computer accurately calculates which cut film the defective portion is on based on the state of the transverse cutter 34 and the position of the defective portion in the transverse direction, and sends an instruction to operate the corresponding waste sorting device 41 to sort the defective film into the waste collection box 42.

As shown in fig. 1 and 4, the sorting mechanism 4 is disposed downstream of the cutting mechanism 3, and the sorting mechanism 4 has a plurality of waste sorting devices 41 corresponding to the number of cut films in the transverse direction, and the defective films are sorted into the waste collection box 42 by the waste sorting devices 41. Specifically, the waste piece sorting device 41 includes: a housing 411 disposed below the film moving path, a belt conveyor 412 is disposed on the upper surface of the housing 411, and the belt conveyor 412 is driven by a motor 422 to rotate, and the qualified film is transferred toward the film take-up module by the belt conveyor 412.

As shown in fig. 5, the scrap sorting apparatus 41 is provided with a conveyor 412 above a housing 411, a tray 413 below the conveyor 412, and a plurality of vent holes 414 for ensuring ventilation of the lower surface of the film are provided on the upper surface of the tray 413. At the front end of the conveyor belt 412 is provided an upturned guide angle 415, by which guide angle 415 defective film is removed.

As shown in fig. 6, the guide angle 415 in this position allows acceptable film to pass through.

With the guide angle 415 in this position, the rejected film can be guided down to the scrap bin 42, as shown in fig. 7.

As shown in fig. 5-7, when the guide angle 415 is flipped up, the tip of the guide angle 415 is blocked up on the moving path of the film, thereby guiding the passing film down to be transported down to the waste bin 42. The guide angle 415 is connected to a drive device, which may be an electromagnetic mechanism 416, via a link 417, which drives the turning of the guide angle 415. The link 417 is rotatably connected to the housing 411 through a rotating shaft, and a bearing is disposed on the rotating shaft, so that the link 417 can rotate more easily by the contact between the bearing and the link 417. The front end of the electromagnetic mechanism 416 is provided with a return spring, the return spring has a state that an iron core of the electromagnetic mechanism 416 is kept extending forwards, after the electromagnetic mechanism 416 is electrified, the electromagnetic mechanism 416 generates magnetic force to enable the iron core to retract into the electromagnetic mechanism 416, then the electromagnetic mechanism 417 is driven to rotate, the connecting rod 417 drives the guide angle 415 to turn upwards, the tip of the guide angle 415 is enabled to extend upwards out of a moving path of the film, and therefore the passing film with the dead pixel is guided downwards and conveyed to the waste film collecting box 42; when the electromagnetic mechanism 416 is powered off, the iron core on the electromagnetic mechanism 416 extends forwards under the action of the return spring, and then the connecting rod 417 is driven to rotate, and the connecting rod 417 drives the guide angle 415 to turn downwards, so that the tip of the guide angle 415 is laid downwards and qualified film is allowed to pass through.

As shown in fig. 8, in a housing 411 of the waste sorting device 41, a motor 422 drives a conveyor belt 412 to rotate through a timing belt 423, and a second tensioning device 424 is further disposed in the housing 411 for maintaining the tensioning of the timing belt 423.

As shown in fig. 9, the second tensioning device 424 includes a pressing roller 426, the pressing roller 426 is rotatably connected to the housing 411 by a rotating frame 425, a torsion spring is further provided on the rotating shaft of the rotating frame 425, and the pressing roller 426 is held in contact with the timing belt 423 by an elastic force of the torsion spring, so as to maintain the tension of the timing belt 423.

As shown in fig. 10, a first tensioning device 418 is further disposed below the conveyor belt 412 of the scrap sorting device 41, and the first tensioning device 418 is used for keeping the conveyor belt 412 tensioned, so as to further facilitate the transportation of the qualified film.

As shown in fig. 11, the first tensioning device 418 includes a plurality of rollers 419 disposed on the main shaft, the belt above is supported by the rollers 419, the main shaft is rotatably disposed on a mounting bracket 420 below, a through hole for disposing the main shaft on the mounting bracket 420 is a strip-shaped hole 421 extending in the up-down direction, a compression spring is disposed below the strip-shaped hole 421, the main shaft can move up and down in the strip-shaped hole 421 by the compression spring, so that the rollers 419 apply different supporting forces to the belt 412, and tensioning of the belt 412 is ensured.

As shown in fig. 12, when the industrial camera 21 detects that there is a dead spot on the film during normal film conveyance, image processing and calculation are performed by the computer to determine which of the small cut films the dead spot will be on, and the cut film is removed by the reject sorting device 41 when it moves to the sorting mechanism 4.

As shown in fig. 13, when the industrial camera 21 detects that a defective spot exists on the film and the computer determines that the defective spot is located between two films, it is necessary to remove all of the two films, and when the two films are moved to the sorting mechanism 4, the two films are removed by the waste sorting device 41.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are intended to be within the scope of the invention.

Claims

1. A film dead pixel identification and sorting system, comprising:

the film reel (1) is used for arranging a large roll of film (11) to be cut;

the cutting mechanism (3) is arranged at the downstream of the film reel (1) and is used for receiving the film on the film reel (1) and cutting the film;

the scanning mechanism (2) is arranged between the film reel (1) and the cutting mechanism (3), and is provided with an industrial camera (21) for scanning a film to be cut, and a plurality of industrial cameras (21) are sequentially arranged at intervals along the width direction of the film;

the sorting mechanism (4) is arranged at the downstream of the cutting mechanism (3) and is provided with a plurality of waste film sorting devices (41) corresponding to the number of the cut films in the transverse direction, and unqualified films are sorted into a waste film collecting box (42) through the waste film sorting devices (41);

the scrap sorting apparatus (41) includes: the film tensioning device comprises a shell (411), wherein the shell (411) is arranged below a moving path of the film, a conveyor belt (412) is arranged on the upper surface of the shell (411), and a first tensioning device (418) is arranged below the conveyor belt (412);

the first tensioning device (418) comprises: the main shaft is rotatably arranged on the mounting rack (420) below, a through hole for arranging the main shaft on the mounting rack (420) is a strip-shaped hole (421) extending in the vertical direction, a compression spring is arranged below the strip-shaped hole (421), and the main shaft can move up and down in the strip-shaped hole (421) through the compression spring;

the shell (411) is also internally provided with a guide angle (415) which can be turned upwards, when the guide angle (415) is turned upwards, the tip of the guide angle (415) protrudes upwards to be blocked on the moving path of the film, and the guide angle (415) guides the film downwards so that the film is sorted to a waste film collecting box (42);

and a driving device is further arranged in the shell (411) and is used for driving the guide angle (415) to rotate.

2. The film dead pixel identification and sorting system according to claim 1, wherein the cutting mechanism (3) comprises a plurality of longitudinal rolling cutters (33) arranged at intervals and a transverse cutter (34) arranged transversely.

3. The film dead-center identifying and sorting system according to claim 1, wherein a motor is further provided in the housing (411), and the motor is connected to a driving roller of the conveyor belt (412) through a timing belt (423);

still be provided with second rising and tightly install (424) in casing (411), second rising and tightly install (424) includes: the pressing roller (426) is rotatably connected to the shell (411) through the rotating frame (425), a torsion spring is further arranged on a rotating shaft of the rotating frame (425), the pressing roller (426) is kept to abut against the synchronous belt (423) through the elastic force of the torsion spring, and therefore the tension of the synchronous belt (423) is kept.

4. The film dead-center identifying and sorting system according to claim 1, wherein the driving means employs an electromagnetic mechanism (416), and the driving end of the driving means is connected to the guide angle (415) through a link (417).

5. The film dead pixel identifying and sorting system of claim 4, wherein the link (417) is rotatably connected to the housing (411) by a rotating shaft having a bearing connected to the link (417).

6. The film dead pixel identifying and sorting system according to any one of claims 1 to 5, wherein a pallet (413) is provided below the conveyor belt (412), and the pallet (413) is provided with a plurality of vent holes (414).

7. The film dead-center detecting and sorting system according to claim 6, wherein a motor (422) is provided in the housing (411), and the motor (422) is used for driving the conveyor belt (412) to rotate.

8. The film dead-center identifying and sorting system of claim 6, wherein the guide angle (415) is provided at a front end of the conveyor belt (412).

9. The film dead pixel identifying and sorting system according to any one of claims 1 to 5, wherein the scanning mechanism (2) includes a beam (22) crossing over a moving path of the film, the industrial camera (21) being disposed on the beam (22).

10. The film dead-center identifying and sorting system according to claim 9, wherein both ends of the cross beam (22) are detachably attached to the cutting mechanism (3).