CN114782430A - Counting system based on etched metal lead frame and counting method thereof - Google Patents
Counting system based on etched metal lead frame and counting method thereof Download PDFInfo
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- CN114782430A CN114782430A CN202210694046.2A CN202210694046A CN114782430A CN 114782430 A CN114782430 A CN 114782430A CN 202210694046 A CN202210694046 A CN 202210694046A CN 114782430 A CN114782430 A CN 114782430A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/0002—Inspection of images, e.g. flaw detection
- G06T7/0004—Industrial image inspection
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/10—Image acquisition modality
- G06T2207/10004—Still image; Photographic image
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2207/00—Indexing scheme for image analysis or image enhancement
- G06T2207/30—Subject of image; Context of image processing
- G06T2207/30242—Counting objects in image
Abstract
The invention relates to the technical field of counting detection of lead frames, in particular to a counting system based on an etched metal lead frame and a counting method thereof, wherein the counting system comprises a conveying system for conveying carriers, a visual detection system for detecting and counting the carriers is arranged on one side of the conveying system, a supply system for placing the carriers in the conveying system is arranged at the input end of the conveying system, and a storage system for recovering the detected carriers is arranged at the output end of the conveying system; the visual detection system comprises a sensing piece for detecting the in-place of the carrier and an image acquisition device for acquiring images of the in-place carrier, wherein the sensing piece and the image acquisition device are connected with a control computing terminal, and the sensing piece is positioned on one side of the image acquisition device, which is close to the supply system; the control computing terminal is connected with an alarm device; the induction piece, the image acquisition device, the supply system, the storage system and the conveying system are all connected with the control computing terminal, and can be used for rapidly and accurately counting.
Description
Technical Field
The invention relates to the technical field of counting detection of lead frames, in particular to a counting system based on an etched metal lead frame and a counting method thereof.
Background
At present, the etched lead frame is mainly counted manually, the lead frame and the separating paper are thin, the eye force cannot be directly counted, the lead frame and the separating paper need to be turned over and counted by hands one by one, the counting is operated by 78 pieces of common boxes, the number is checked once, about 2 minutes is needed, much labor is needed, and the efficiency is low. Later, the number of the lead frames can be obtained by adopting an over-weighing mode, but because the paper partition is light, one or two sheets of paper are lost and cannot be obviously displayed on a weighing instrument, and the paper partition is lost between the lead frames, so that friction is caused, and the quality problem is caused.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the counting system and the counting method based on the etched metal lead frame can overcome the defects of the prior art and can quickly and accurately count.
The technical scheme adopted by the invention for solving the technical problem is as follows: the counting system based on the etched metal lead frame comprises a conveying system for conveying carriers, wherein a visual detection system for detecting and counting the carriers is arranged on one side of the conveying system, a supply system for placing the carriers in the conveying system is arranged at the input end of the conveying system, and a storage system for recovering the detected carriers is arranged at the output end of the conveying system;
the visual detection system comprises a sensing piece for detecting the in-place of the carrier and an image acquisition device for acquiring images of the in-place carrier, wherein the sensing piece and the image acquisition device are connected with a control computing terminal, and the sensing piece is positioned on one side of the image acquisition device, which is close to the supply system;
the control computing terminal is connected with an alarm device;
the sensing piece, the image acquisition device, the supply system, the storage system and the conveying system are all connected with the control computing terminal.
During the use of this application, will wait that the carrier that detects carries visual detection system department through the feed system, the response piece senses and carries out image acquisition through image acquisition device behind the carrier, and control computing terminal receives the image of gathering, carries out the analysis, counts the retest to etching metal lead frame, retrieves through the system of accomodating to qualified carrier in quantity, and unqualified carrier is reported to the police by alarm device, reminds the staff to handle.
The supply system comprises a supply bracket, a supply lifter is arranged on the supply bracket, a supply carrier tray is connected with the supply lifter, and a conveying system for conveying carriers is arranged on the supply bracket towards the visual detection system;
a supply pushing mechanism used for pushing the carrier to the conveying system is arranged on one side, away from the conveying system, of the carrier supply tray;
the feeding detection group is used for detecting the position of the carrier;
the supply detection group, the supply lifter and the supply pushing mechanism are all connected with the control computing terminal.
The supply detection group comprises four photoelectric limit switches, and the first photoelectric limit switch is fixedly connected with the lower part of the supply bracket and mainly used for detecting the lower limit position of the supply carrier tray; the second photoelectric limit switch is fixedly connected with the supply carrier tray and is mainly used for detecting whether a carrier exists on the supply carrier tray or not, and the supply carrier tray is in a leveling position; the third photoelectric limit switch is superposed with the plane of the conveying system, the fourth photoelectric limit switch is positioned above the third photoelectric limit switch, the distance between the third photoelectric limit switch and the fourth photoelectric limit switch is the height of a carrier, and the third photoelectric limit switch and the fourth photoelectric limit switch are fixedly connected with the upper part of the supply bracket;
the supply pushing mechanism is positioned between the third photoelectric limit switch and the fourth photoelectric limit switch;
and the photoelectric limit switches are all connected with the control computing terminal.
The supply pushing mechanism comprises a supply pushing cylinder fixedly arranged towards the conveying system, a piston rod of the supply pushing cylinder is connected with a supply push plate, and the supply pushing cylinder is connected with the control computing terminal.
The collecting system comprises a collecting support fixedly arranged at one output end of the conveying system, a collecting lifter is arranged on the collecting support, and the collecting lifter is connected with a collecting carrier tray;
the storage detection group is used for detecting the position of the carrier;
the accommodating bracket is also provided with an accommodating and pushing-in mechanism for pushing the carrier into the accommodating carrier tray;
the storage lifter, the storage pushing-in mechanism and the storage detection group are connected with the control computing terminal.
The storage detection group comprises three photoelectric limit switches, the first photoelectric limit switch is fixedly connected with the upper part of the storage support and is superposed with the plane of the conveying system and is mainly used for storing a carrier tray during first storage or detecting whether the upper surface of the uppermost carrier of the carrier tray is flush with the conveying system during subsequent storage so that the carrier to be stored can fall on the carrier tray, the second photoelectric limit switch is positioned above one end, close to the storage support, of the conveying system and is mainly used for detecting whether the carrier arrives, when the carrier arrives, the carrier is pushed into the carrier tray through the pushing mechanism, then the storage lifter descends, the top surface of the uppermost carrier of the carrier tray is detected to be flush with the conveying system through the first photoelectric limit switch and stops moving downwards, and the third photoelectric limit switch is positioned below the storage support, the lower limit position of the carrier accommodating tray is set by setting the third photoelectric limit switch, namely when carriers on the carrier accommodating tray reach a set number, the carrier accommodating tray reaches the position of the third photoelectric limit switch, namely, the carrier accommodating tray is regarded as full, and a worker or a working robot waits for receiving operation.
And the photoelectric limit switch is connected with the control computing terminal.
The accommodating and pushing mechanism comprises a pushing cylinder fixedly connected with the top end of the accommodating support, the pushing cylinder is positioned above one side, close to the conveying system, of the accommodating carrier tray, a piston rod of the pushing cylinder is connected with an accommodating push plate, and the pushing cylinder is connected with the control computing terminal.
Each feeding system comprises two feeding brackets, and the bottoms of the two feeding brackets are connected through a feeding sliding rail mechanism;
each storage system comprises two storage supports, and the bottoms of the two storage supports are connected through a storage slide rail mechanism.
The counting method based on the etched metal lead frame applying the system comprises the following steps:
the method comprises the following steps: inputting a carrier: conveying the carrier to be detected to a visual detection system through a supply system;
step two: carrier image acquisition: the sensing piece senses a carrier conveyed by the supply system, and the image acquisition device takes a picture;
step three: processing the images, and calculating the number of carrier lead frames;
step four: and judging whether the quantity of the carrier lead frames is qualified or not, if so, storing the qualified carrier through a storage system, otherwise, giving an alarm by an alarm device.
The third step comprises the following substeps:
3-1: selecting a rectangular frame: selecting a lead frame of the carrier and a place with the most clear brightness difference of the section of the paper partition for rectangular frame selection;
3-2: threshold processing: obtaining the rough outline of the lead frame through two threshold processing;
3-3: reducing the definition domain by adopting reduce _ domain, and then obtaining an external rectangle through closed operation and a smalllest operator;
3-4: the number of lead frames was counted by using the width.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a counting system and a counting method based on an etched metal lead frame, which can realize automatic detection of a carrier etched lead frame, do not need manual counting, have high counting accuracy, improve the detection rechecking efficiency, and accelerate the ex-warehouse efficiency and the working efficiency of a carrier.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a partially enlarged view of a in fig. 1.
Fig. 3 is a partially enlarged view of B in fig. 1.
Fig. 4 is a partially enlarged view of C in fig. 1.
In the figure: 1. a vision inspection system; 101. a sensing member; 102. an image acquisition device; 2. a supply system; 201. a supply holder; 202. supplying to a lift; 203. supplying a carrier tray; 204. a supply push plate; 205. a supply push cylinder; 206. a slide rail mechanism; 3. a storage system; 301. a storage rack; 302. a storage lift; 303. a carrier receiving tray; 304. a receiving push plate; 305. pushing in the cylinder; 306. a storage slide rail mechanism; 4. a carrier; 5. controlling the computing terminal; 6. a delivery system.
Detailed Description
Embodiments of the invention are further described below with reference to the accompanying drawings:
example 1
As shown in fig. 1 to 4, a counting system for etching metal lead frames comprises a conveying system 6 for conveying a carrier 4, a visual detection system 1 for detecting and counting the carrier 4 is arranged on one side of the conveying system 6, a supply system 2 for placing the carrier 4 in the conveying system 6 is arranged at one input end of the conveying system 6, and a receiving system 3 for recovering the detected carrier 4 is arranged at one output end of the conveying system 6;
the visual detection system 1 comprises a sensing piece 101 for detecting the position of the carrier 4 and an image acquisition device 102 for acquiring images of the position-in carrier 4, wherein the sensing piece 101 and the image acquisition device 102 are connected with the control computing terminal 5, and the sensing piece 101 is positioned on one side of the image acquisition device 102 close to the supply system 2;
the control computing terminal 5 is connected with an alarm device;
the sensing piece 101, the image acquisition device 102, the supply system 2, the containing system 3 and the conveying system 6 are all connected with the control and calculation terminal 5.
This embodiment response piece 101 adopts the response light source, like laser inductor etc, response piece 101 senses behind carrier 4, carries out image acquisition through image acquisition device 102 promptly, carries out picture processing through control computing terminal 5, and the analysis count detects. The image capturing device 102 employs an area-array camera.
The supply system 2 comprises a supply bracket 201, a supply lifter 202 is arranged on the supply bracket 201, a supply carrier tray 203 is connected with the supply lifter 202, and a conveying system 6 for conveying the carrier 4 is arranged on the supply bracket 201 facing the visual inspection system 1;
a supply pushing mechanism for pushing the carrier 4 to the conveying system 6 is arranged on one side of the supply carrier tray 203 away from the conveying system 6;
a supply detection group for detecting the position of the carrier 4;
the supply detection group, the supply lifter 202 and the supply pushing mechanism are all connected with the control computing terminal 5.
The supply detection group comprises four photoelectric limit switches, wherein the first photoelectric limit switch is fixedly connected with the lower part of the supply bracket 201 and mainly used for detecting the lower limit position of the supply carrier tray 203; the second photoelectric limit switch is fixedly connected with the carrier supply tray 203 and is mainly used for detecting whether a carrier exists on the carrier supply tray 203 and is a leveling position; the plane where the third photoelectric limit switch and the conveying system 6 are located is overlapped, the fourth photoelectric limit switch is located above the third photoelectric limit switch, the distance between the third photoelectric limit switch and the fourth photoelectric limit switch is the height of one carrier 4, and the third photoelectric limit switch and the fourth photoelectric limit switch are fixedly connected with the upper portion of the supply support 201;
the supply pushing mechanism is positioned between the third photoelectric limit switch and the fourth photoelectric limit switch;
the photoelectric limit switches are all connected with the control computing terminal 5. The third photoelectric limit switch is mainly used as a standby position, and the fourth photoelectric limit switch is used as an input position. When the device is used, the supply elevator 202 drives the supply carrier tray 203 to move to a position below the supply bracket 201, when the first photoelectric limit switch detects the supply carrier tray 203, the first photoelectric limit switch sends a signal to the control and calculation terminal 5, the control and calculation terminal 5 receives the signal, the supply elevator 202 is controlled to pause, carriers 4 to be detected are placed on the supply carrier tray 203 through manual work or an existing transport robot, one or more carriers can be placed on the supply carrier tray 203 by manual work or the existing transport robot, after the placement is finished, the second photoelectric limit switch detects that the carriers 4 are placed on the supply carrier tray 203, the signal is sent to the control and calculation terminal 5, the control and calculation terminal 5 controls the supply elevator 202 to drive the supply carrier tray 203 to ascend, when the third photoelectric limit switch detects the top surface of the uppermost carrier 4 of the supply carrier tray 203, namely, the top surface of the uppermost carrier 4 of the supply carrier tray 203 is superposed with the conveying surface of the conveying system 6, the supply elevator 202 stops running and enters a standby position, the control computing terminal 5 judges whether a carrier 4 which is being detected exists or not through the visual detection system 1, if so, the standby position is continuously kept, if not, the control computing terminal 5 controls the supply elevator 202 to ascend, the fourth photoelectric limit switch detects the top surface of the uppermost carrier 4 of the supply carrier tray 203, the fourth photoelectric limit switch stops ascending, the carrier 4 which is supplied to the uppermost carrier tray 203 is pushed to the conveying system 6 through the supply pushing mechanism, and the carrier 4 is conveyed to the visual detection system 1 through the conveying system 6 for counting detection. The supply lifter 202 is raised, the top surface of the next carrier 4 is detected by the third photoelectric limit switch, and the next carrier 4 supplied to the carrier tray 203 immediately enters the standby position to wait for detection. After the detection of all the carriers 4 on the supplied carrier tray 203 is completed and the second photoelectric limit switch detects that no carrier 4 is present on the supplied carrier tray 203, the supply elevator 202 returns to the lower limit position, the carrier 4 to be detected is placed on the supplied carrier tray 203 again, and the above supply operation is repeated.
The supply pushing mechanism comprises a supply pushing cylinder 205 fixedly arranged towards the conveying system 6, a piston rod of the supply pushing cylinder 205 is connected with the supply pushing plate 204, and the supply pushing cylinder 205 is connected with the control computing terminal 5. Referring to fig. 1, the feed push cylinder 205 is fixed by a fixing frame.
The containing system 3 comprises a containing support 301 fixedly arranged at one output end of the conveying system 6, a containing lifter 302 is arranged on the containing support 301, and the containing lifter 302 is connected with a containing carrier tray 303;
the storage detection group is used for detecting the position of the carrier 4;
the storage bracket 301 is also provided with a storage pushing mechanism for pushing the carrier 4 into the storage carrier tray 303;
the storage lifter 302, the storage pushing mechanism and the storage detection group are connected with the control computing terminal 5.
The containing detection group comprises three photoelectric limit switches, the first photoelectric limit switch is fixedly connected with the upper part of the containing support 301, the first photoelectric limit switch is superposed with the plane of the conveying system 6 and is mainly used for judging whether the upper surface of the containing carrier tray 303 during first containing or the uppermost carrier 4 of the containing carrier tray 303 during subsequent containing is flush with the conveying system 6 so as to control the carrier 4 to be contained to fall on the containing carrier tray 303, the second photoelectric limit switch is positioned above one end of the conveying system 6 close to the containing support 301 and is mainly used for detecting whether the carrier 4 arrives, when the carrier 4 arrives, the carrier 4 is pushed into the containing carrier tray 303 through the pushing mechanism, then the containing lifter 302 descends, and after the first photoelectric limit switch detects that the top surface of the uppermost carrier 4 of the containing carrier tray 303 is flush with the conveying surface of the conveying system 6, and stopping moving downwards, wherein the third photoelectric limit switch is positioned below the accommodating bracket 301, the lower limit position of the accommodating carrier tray 303 is set by setting the third photoelectric limit switch, namely when carriers 4 on the accommodating carrier tray 303 reach a set number, the accommodating carrier tray 303 reaches the position of the third photoelectric limit switch, namely, the accommodating carrier tray is considered to be full, and waiting is carried out by a worker or a working robot for material receiving operation.
The photoelectric limit switch is connected with the control and calculation terminal 5.
The accommodating and pushing mechanism comprises a pushing cylinder 305 fixedly connected with the top end of the accommodating support 301, the pushing cylinder 305 is located above one side, close to the conveying system 6, of the accommodating carrier tray 303, a piston rod of the pushing cylinder 305 is connected with an accommodating push plate 304, and the pushing cylinder 305 is connected with a control and calculation terminal. When the second photoelectric limit switch detects the carrier 4, the carrier 4 is pushed onto the storage carrier tray 303 by the push-in mechanism.
The conveying system 6 of the embodiment adopts the existing conveying belt conveying system, the driving mechanism of the conveying system is connected with the control and calculation terminal 5, after the sensing piece 101 detects the carrier 4, the conveying belt conveying system stops running, the image acquisition device 102 takes a picture and sends the picture to the control and calculation terminal 5 for image processing and analysis, if the number is correct, the conveying system 6 continues running, the carrier 4 is conveyed to the carrier accommodating tray 303, and if the number is not correct, the alarm device gives an alarm to remind a worker to process the carrier. The alarm device can adopt a buzzer, an audible and visual alarm and the like. The transport system 6 is secured by means of an existing support, not shown in the figures.
The supply lift 202 and the storage lift 302 both use lift cylinders.
The control computing terminal 5 is a computer terminal.
Each feeding system 2 comprises two feeding brackets 201, and the bottoms of the two feeding brackets 201 are connected through a feeding slide rail mechanism 206; each storage system 3 includes two storage brackets 301, and the bottoms of the two storage brackets 301 are connected by a storage slide mechanism 306. Referring to fig. 1 and 2, in the present embodiment, the supply rail mechanism 206 and the storage rail mechanism 306 are of a conventional structure, the supply rail mechanism 206 includes a slide way, a screw rod is disposed in the slide way, a motor for driving the screw rod to rotate is disposed at one end of the screw rod, bottoms of corresponding brackets of the supply system 2 and the storage system 3 are inserted into the slide way, and the screw rod penetrates through the corresponding brackets and is in threaded connection with the corresponding brackets. The supply bracket 201 and the storage bracket 301 can move back and forth along the slide way along with the rotation of the screw rod. Two feeding brackets 201 or receiving brackets 301 in the same group share one conveying system 6, so that when one feeding bracket 201 or receiving bracket 301 is used, the other is used as a spare, and when the rotation is performed, the corresponding spare bracket is moved to the corresponding position of the conveying system 6 along the slide way by driving a screw rod through a motor.
Example 2
The counting method based on the etched metal lead frame applied to embodiment 1 comprises the following steps:
the method comprises the following steps: inputting a carrier: the carrier 4 to be detected is conveyed to the visual inspection system 1 through the supply system 2; specifically, the carrier 4 to be inspected is placed on the supply carrier tray 203, the supply elevator 202 pushes the supply carrier tray 203 to a position corresponding to the transport system 6, the carrier 4 is pushed onto the transport system 6 by the supply pushing mechanism, and then the transport system 6 transports the carrier 4 to a position of the vision inspection system 1.
Step two: and (3) carrier 4 image acquisition: the sensing piece 101 senses the carrier 4 conveyed by the supply system 2, the conveying system 6 stops running, and the image acquisition device 102 takes a picture;
step three: processing the image, and calculating the number of carrier lead frames; the third step comprises the following substeps:
3-1: selecting a rectangular frame: selecting a rectangular frame, wherein the position of the rectangular frame is determined by the irradiation intensity of a light source, and specifically, selecting a place with the most clear brightness difference between a lead frame of the carrier 4 and the section of the paper partition for rectangular frame selection;
3-2: and (3) threshold processing: obtaining the rough outline of the lead frame through two threshold processing; because the color image is firstly divided into chroma, saturation and darkness by adopting the most general picture channel division processing method, and because the lead frame and the separating paper have stronger light reflection, the analysis of the darkness is cancelled, and the chroma and the saturation are utilized for processing. According to the gray level detection, the gray level difference between the lead frame and the paper separation is large in saturation, so that the first threshold processing is firstly carried out, a gray level range of 80-255 is extracted, and the paper separation is carried out. The chromaticity is used for distinguishing gray values by colors, then the second threshold processing is carried out, the gray values of 0-18 are extracted, the lead frame is isolated from the carrier and the gap, and the approximate outline of the lead frame is obtained.
3-3: reducing the definition domain by adopting reduce _ domain, and then obtaining an external rectangle through closed operation and a smalllest operator;
and after the threshold processing is finished, reducing _ domain is adopted to reduce the definition domain, and the next processing is carried out. Because the thickness of the lead frame is only 0.3mm, the section of the cut lead frame is not very smooth and uneven in chromaticity, so that the section of the lead frame subjected to threshold processing has a plurality of noise points and noise grains, accurate calculation cannot be carried out, and the lead frame is formed by using a closed operation mode, a filling operation mode and an open operation mode. In the closing operation, a rectangular structure is used for closing the area, and parameters of the width and the height are set to be 10, so that most gaps are filled, and the remaining small gaps are filled by using fill up. At this time, the inside of the obtained rectangular graph basically has no gap, but the outer edge effect is not good, and the width is not beneficial to being accurately calculated, so that the circular structure is adopted for closed operation, and edge smoothing is carried out. And then, after each rectangle is communicated, the shape of the section rectangle of each lead frame is transformed by adopting convex hull trans, adjacent colors are separated, and finally a final external rectangle is obtained by using a smallest operator, so that the calculation is convenient.
3-4: the number of lead frames is counted using the width. And performing width calculation by using a circumscribed rectangle obtained by a smallest operator, wherein the unit is pixel, the calculation formula is width = Column21-Column11, then judging the width of all rectangles, and when the width is more than 80, defining that the width exceeds the width range, and the partition paper is absent and marked above the rectangle by using an arrow and the like. After the rectangular width is judged, counting is carried out by using a count obj operator, and a counting result is displayed on a display screen of the control calculation terminal 5.
Step four: and judging whether the quantity of the carrier lead frames is qualified or not, if so, storing the qualified carrier 4 through a storage system, otherwise, giving an alarm by an alarm device.
Claims (10)
1. The counting system based on the etched metal lead frames is characterized by comprising a conveying system (6) for conveying carriers (4), wherein a visual detection system (1) for detecting and counting the carriers (4) is arranged on one side of the conveying system (6), a supply system (2) for placing the carriers (4) in the conveying system (6) is arranged at one input end of the conveying system (6), and a storage system (3) for recovering the detected carriers (4) is arranged at one output end of the conveying system (6);
the visual detection system (1) comprises a sensing piece (101) used for detecting the in-place position of the carrier (4) and an image acquisition device (102) used for acquiring images of the in-place carrier (4), the sensing piece (101) and the image acquisition device (102) are connected with a control computing terminal (5), and the sensing piece (101) is positioned on one side, close to the supply system (2), of the image acquisition device (102);
the induction part (101), the image acquisition device (102), the supply system (2), the storage system (3) and the conveying system (6) are all connected with a control computing terminal (5), and the control computing terminal (5) is connected with an alarm device.
2. The etched metal lead frame-based counting system according to claim 1, wherein the feeding system (2) comprises a feeding support (201), a feeding elevator (202) is arranged on the feeding support (201), and a feeding carrier tray (203) is connected to the feeding elevator (202);
the side, far away from the conveying system (6), of the carrier supply tray (203) is provided with a supply pushing mechanism used for pushing the carrier (4) to the conveying system (6);
also comprises a supply detection group for detecting the position of the carrier (4);
the supply detection group, the supply lifter (202) and the supply pushing mechanism are all connected with the control computing terminal (5).
3. The etched metal lead frame based counting system according to claim 2, wherein the supply detection group comprises four photoelectric limit switches, a first photoelectric limit switch is fixedly connected with the lower part of the supply bracket (201), a second photoelectric limit switch is fixedly connected with the supply carrier tray (203), a third photoelectric limit switch is overlapped with the plane of the conveying system (6), a fourth photoelectric limit switch is positioned above the third photoelectric limit switch, the distance between the third photoelectric limit switch and the fourth photoelectric limit switch is the height of one carrier (4), and the third photoelectric limit switch and the fourth photoelectric limit switch are fixedly connected with the upper part of the supply bracket (201);
the supply pushing mechanism is positioned between the third photoelectric limit switch and the fourth photoelectric limit switch;
the photoelectric limit switches are all connected with the control computing terminal (5).
4. The etched metal lead frame based counting system according to claim 3, characterized in that the feeding pushing mechanism comprises a feeding pushing cylinder (205) fixedly arranged towards the conveying system (6), a piston rod of the feeding pushing cylinder (205) is connected with the feeding push plate (204), and the feeding pushing cylinder (205) is connected with the control computing terminal (5).
5. The etched metal lead frame-based counting system according to claim 2, characterized in that the receiving system (3) comprises a receiving support (301) with one end fixedly arranged at the output end of the conveying system (6), a receiving lifter (302) is arranged on the receiving support (301), and the receiving lifter (302) is connected with a receiving carrier tray (303);
the storage detection group is used for detecting the position of the carrier (4);
the accommodating bracket (301) is also provided with an accommodating and pushing-in mechanism for pushing the carrier (4) into the accommodating carrier tray (303);
the storage lifter (302), the storage pushing-in mechanism and the storage detection group are connected with the control computing terminal (5).
6. The counting system based on the etched metal lead frame according to claim 5, wherein the receiving detection set comprises three photoelectric limit switches, a first photoelectric limit switch is fixedly connected with the upper part of the receiving bracket (301), the first photoelectric limit switch is coincident with the plane of the conveying system (6), a second photoelectric limit switch is positioned above one end of the conveying system (6) close to the receiving bracket (301), and the third photoelectric limit switch is positioned below the receiving bracket (301),
the photoelectric limit switch is connected with a control computing terminal (5).
7. The counting system based on the etched metal lead frame according to claim 5, wherein the receiving and pushing mechanism comprises a pushing cylinder (305) fixedly connected with the top end of the receiving bracket (301), the pushing cylinder (305) is positioned above one side of the receiving carrier tray (303) close to the conveying system (6), a receiving push plate (304) is connected to a piston rod of the pushing cylinder (305), and the pushing cylinder (305) is connected with a control computing terminal.
8. The etched metal lead frame-based counting system of claim 5, characterized in that each feeding system (2) comprises two feeding brackets (201), the bottoms of the two feeding brackets (201) are connected by a feeding slide mechanism (206);
each containing system (3) comprises two containing supports (301), and the bottoms of the two containing supports (301) are connected through a containing slide rail mechanism (306).
9. The etched metal lead frame based counting method applied to any one of claims 1 to 8, characterized in that it comprises the following steps:
the method comprises the following steps: inputting a carrier: the carrier (4) to be detected is conveyed to the visual detection system (1) through the supply system (2);
step two: carrier (4) image acquisition: the sensing piece (101) senses the carrier (4) conveyed by the supply system (2), and the image acquisition device (102) takes a picture;
step three: processing the image, and calculating the number of carrier lead frames;
step four: and judging whether the quantity of the carrier lead frames is qualified, if so, storing the qualified carrier (4) through a storage system, otherwise, giving an alarm through an alarm device.
10. The etched metal lead frame based counting method according to claim 9, wherein said step three comprises the sub-steps of:
3-1: selecting a rectangular frame: selecting a lead frame of the carrier (4) and a place with the most clear section brightness difference of the partition paper for rectangular frame selection;
3-2: threshold processing: obtaining the rough outline of the lead frame through two threshold processing;
3-3: reducing the definition domain by adopting reduce _ domain, and then obtaining an external rectangle through closed operation and a smalllest operator;
3-4: the number of lead frames is counted using the width.
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| CN202210694046.2A CN114782430B (en) | 2022-06-20 | 2022-06-20 | Counting system based on etched metal lead frame and counting method thereof |
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| US20050066214A1 (en) * | 2003-07-16 | 2005-03-24 | Atsushi Obinata | Semiconductor integrated circuit |
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| CN114782430B (en) | 2022-08-23 |
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