CN111496906B - Material belt cutting and conveying method based on CCD detection - Google Patents
Material belt cutting and conveying method based on CCD detection Download PDFInfo
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- CN111496906B CN111496906B CN202010273632.0A CN202010273632A CN111496906B CN 111496906 B CN111496906 B CN 111496906B CN 202010273632 A CN202010273632 A CN 202010273632A CN 111496906 B CN111496906 B CN 111496906B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D11/00—Combinations of several similar cutting apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D7/27—Means for performing other operations combined with cutting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
- B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
- B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
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- Treatment Of Fiber Materials (AREA)
Abstract
The invention discloses a material belt cutting and conveying method based on CCD detection, which is implemented based on a material belt cutting and conveying system and comprises the following steps: and the ratchet wheel discharging device on the discharging station acts after meeting the allowable conditions. And the upstream material detection device based on the upstream material detection station obtains and stores material information data and sends an upstream detection completion instruction. And when qualified materials are judged to exist at the last cutting station, the corresponding cutting device moves to a cutting waiting position, and the positioning device positions the material belt. Then, a downstream CCD visual detection device of the downstream material detection station executes corresponding actions, and the controller sends out a downstream detection completion instruction; and simultaneously cutting and cutting waste, and sending a waste cutting completion instruction by the controller. The positioning and final cutting device resetting controller sends a final cutting completion instruction; meanwhile, the cutting devices of other cutting stations execute corresponding actions, and the controller sends out an upstream cutting completion instruction. The invention can fully and accurately detect the materials and avoid the emergence of defective products.
Description
Technical Field
The invention belongs to the technical field of material cutting, and particularly relates to a material belt cutting conveying method based on CCD detection.
Background
The Wafer is assembled by a plurality of original parts, the quality of the original parts is particularly important for the Wafer assembling process, and the detection and processing of the original parts directly influence the quality and yield of the Wafer assembling and Final assembling.
The prior cutting and conveying system mainly comprises a ratchet wheel feeding device, a plurality of cutting devices and a waste cutting device; detecting the state (whether materials exist) of the materials on the material belt by adopting an optical fiber detection device positioned between a ratchet wheel feeding device and a first cutting device, obtaining material information data based on signals transmitted by the optical fiber detection device, utilizing a conventional PLC data shift instruction (usually, the data shift instruction is used, the content in the data can be moved leftwards or rightwards bit by bit), shifting the content in the data leftwards to complete multiplication by 2 weighting, shifting the content in the data rightwards to complete division by 2 weighting operation) to judge whether materials exist under each station, and controlling corresponding devices under each station in equipment to perform corresponding actions (ratchet wheel action feeding, when materials exist under each station, cutting and waste cutting are performed simultaneously) according to the judgment result; although the production of products is realized by the action time sequence of the existing equipment and each device, defective products cannot be discharged fully due to insufficient related detection, so that a lot of Wafer and Final defective products are generated, the product yield is seriously influenced, and the production cost is greatly increased; in a more serious situation, a large amount of defective products flow into the market, and finally, the defective products need to be processed in a full-manual recall and full-inspection mode, so that a large amount of manpower and material resources are wasted.
In view of the above, there is a need to develop a cutting and conveying method capable of performing sufficient detection and discharging defective products.
Disclosure of Invention
Aiming at overcoming the defects in the prior art, the invention solves the technical problem of providing a material belt cutting and conveying method based on CCD detection; can carry out sufficient accurate detection, fully discharge bad products.
In order to solve the technical problem, the embodiment of the invention provides a material belt cutting and conveying method based on CCD detection, which uses a material belt cutting and conveying system based on CCD detection, wherein the material belt cutting and conveying system comprises a controller, and a discharging station, a plurality of cutting stations and a waste cutting station which are sequentially arranged along the material belt conveying direction; an upstream material detection station is arranged between the feeding station and the first cutting station, and a downstream material detection station is arranged between the last two cutting stations; the method comprises the following steps:
s1, when the ratchet wheel discharging device at the discharging station receives an upstream detection completion instruction, an upstream cutting completion instruction, a downstream detection completion instruction, a final cutting completion instruction and a waste cutting completion instruction sent by the controller, allowing the ratchet wheel discharging device to complete the next feeding action and enter the next cycle; all of the completion instructions issued following the previous cycle are cleared;
s2, the controller assigns values based on signals transmitted by an upstream material detection device located at the upstream material detection station to obtain and store material information data of the current material, and sends an upstream detection completion instruction; meanwhile, the controller processes material information data corresponding to each material stored in the controller, and judges the material state of the corresponding material at each station based on the processed data, wherein the material state comprises whether the material exists or not and whether the material is qualified or not;
s3, if qualified materials exist under the last cutting station, the cutting device on the last cutting station acts to a cutting waiting position, the positioning device on the last cutting station acts to position the material belt, and the next step is continuously executed; if no material or unqualified material is judged under the last cutting station, the step S6 is executed;
s4, the downstream CCD visual detection device positioned at the downstream material detection station executes corresponding actions based on the material state of the corresponding material, and the controller sends out a downstream detection completion instruction; meanwhile, carrying out final cutting to form a material finished product; the waste cutting device positioned at the waste cutting station performs corresponding actions, and the controller sends out a waste cutting completion instruction;
s5, resetting the cutting device and the positioning device on the last cutting station, and sending the final cutting completion instruction by the controller; meanwhile, the cutting devices of other cutting stations execute corresponding actions based on the material states of the corresponding materials, and the controller sends out the upstream cutting completion instruction;
the step S6 includes:
s61, the cutting device corresponding to the last cutting station and the positioning device do not act, and the controller sends out the final cutting completion instruction by default;
s62, the downstream CCD visual detection device positioned at the downstream material detection station executes corresponding actions based on the material state of the corresponding material, and the controller sends out a downstream detection completion instruction; meanwhile, the waste cutting device carries out corresponding actions, and the controller sends out a waste cutting completion instruction;
s63, the cutting devices of other cutting stations execute corresponding actions based on the corresponding material states, and the controller sends out the upstream cutting completion instruction.
Further, the step of determining the material state of the corresponding material at each station in step S2 further includes:
the ratchet wheel discharging device acts once to trigger the controller to perform displacement processing on material information data of each material stored in the controller for one time, and the data subjected to displacement processing is matched with trigger data corresponding to each station; and if the data of certain displacement processing is matched with the trigger data corresponding to a certain station, judging that the material state of the material corresponding to the station is qualified, and if not, judging that the material state of the material corresponding to the station is material-free or material-unqualified.
Further, the material belt cutting and conveying system also comprises a carrying station matched with the last cutting station, and a carrying device used for carrying the finished material obtained through the last cutting is arranged on the carrying station; and an upper cutter in the cutting device on the last cutting station is arranged on the carrying device.
Further, the step of performing the final cutting in step S4 specifically includes:
the carrying device drives the upper cutter to move towards the direction of the lower cutter on the cutting device, and final cutting is carried out to form the finished material product;
and the following steps are also required to be executed before the step S5 is executed:
and S41, the carrying device carries the finished material to move to an initial state.
Further, the step S5 further includes:
meanwhile, the conveying device conveys the finished material to a material placing position and then returns to the initial state again;
further, in the step S5 and the step S63, the cutting devices of the other cutting stations execute corresponding actions based on the respective corresponding material states, and the step of the controller issuing the upstream cutting completion instruction specifically includes:
if one or more of the cutting stations except the last cutting station is judged to have qualified materials, the corresponding cutting device is reset after cutting action is executed, and the controller sends an upstream cutting action completion instruction;
and if the situation that one or more cutting stations except the last cutting station have no materials or the materials are unqualified is judged, the corresponding cutting device does not execute cutting action, and the controller sends out an upstream cutting action finishing instruction in a default mode.
Further, in the step S4 and the step S62, the downstream CCD vision inspection device of the downstream material inspection station performs corresponding actions based on the material status of the corresponding material, and the step of the controller issuing the downstream inspection completion instruction specifically includes:
if the downstream material detection station is judged to have qualified materials, the downstream CCD visual detection device executes photographing action, and the controller reserves or replaces material information data of the materials stored in the downstream CCD visual detection device and corresponding to the downstream material detection station based on signals transmitted by the downstream CCD visual detection device; the controller sends the downstream detection completion instruction;
and if the downstream material detection station is judged to have no material or the material is unqualified, the downstream CCD visual detection device does not execute the photographing action, and the controller sends out the downstream detection completion instruction in a default mode.
Furthermore, there are three cutting stations, namely a first cutting station, a second cutting station and a third cutting station in sequence.
Further, the upstream material detection device comprises a CCD image sensor or an optical fiber sensor; the downstream CCD visual detection device comprises a CCD camera.
Due to the adoption of the technical scheme, the beneficial effects are as follows:
compared with the traditional material belt cutting and conveying system, the material belt cutting and conveying system based on CCD detection is characterized in that once an upstream material detection device judges that no material exists (the material belt has an empty window phenomenon) or the material is unqualified, a device at a subsequent station does not perform action and directly performs waste cutting treatment along with the material belt; meanwhile, a downstream CCD visual detection device is additionally arranged between the last two cutting stations, so that materials which are preliminarily judged to be qualified can be secondarily judged, and defective products are discharged; once the tape is determined to be defective, the following cutting device is not operated (generally damaged by the previous cut), and the tape is directly discarded. The material belt cutting and conveying method based on CCD detection is implemented based on the conveying system, and mainly changes the action time sequence of each device, so that the downstream CCD visual detection device is not affected by photographing during cutting and waste cutting actions, the detection accuracy of the downstream CCD visual detection device is further ensured, and the massive emergence of defective products is avoided.
Drawings
Fig. 1 is a schematic structural layout of a material strip cutting and conveying system based on CCD detection in an embodiment of the present invention;
FIG. 2 is a simplified diagram of FIG. 1;
FIG. 3 is a logic block diagram of a material strip cutting and conveying method based on CCD detection according to an embodiment of the present invention;
in the figure: 1-ratchet wheel feeding device, 2-first cutting device, 3-second cutting device, 4-third cutting device, 5-waste cutting device, 6-upstream material detection device, 7-downstream CCD visual detection device and 8-carrying device.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments of the present invention are merely for convenience of description and are not to be construed as limiting the present invention.
As shown in fig. 1 and fig. 2, the material strip cutting and conveying system based on CCD detection disclosed in this embodiment includes a controller (programmable PLC controller), and a material placing station, a plurality of cutting stations, and a waste cutting station that are sequentially arranged along a material strip conveying direction; a ratchet wheel discharging device 1 for driving the material belt to move is arranged on the discharging station, a cutting device for cutting the material belt to enable the material belt to be partially or completely separated from the material belt is arranged on the cutting station (the last cutting device can enable the material belt to be completely separated from the material belt, and the first cutting devices can enable the material belt to be partially or completely separated from the material belt), a positioning device (which is shielded in the drawing and is a positioning device commonly used by technicians in the field for positioning a product, is not an improvement point of the invention and is not described herein), and a waste cutting device 5 for cutting and recovering the material belt is arranged on the waste cutting station (a section of the material belt containing unqualified materials, the qualified materials are taken away and an empty window is cut to be waste and falls into a recovery box); the ratchet wheel feeding device 1, the cutting device and the waste cutting device 5 are all controlled by a controller; an upstream material detection station is arranged between the feeding station and the first cutting station, an upstream material detection device 6 is arranged on the upstream material detection station, a downstream material detection station is arranged between the last two cutting stations, and a downstream CCD visual detection device 7 is arranged on the downstream material detection station; the upstream material detection device 6 and the downstream CCD visual detection device 7 are both in communication connection with the controller.
Besides, the automatic material cutting machine also comprises a carrying station matched with the last cutting station, and a carrying device 8 for carrying the finished material obtained by final cutting is arranged on the carrying station; the upper cutter of the cutting device in the last cutting station is arranged on the carrying device 8.
In this embodiment, the three cutting stations are a first cutting station, a second cutting station and a third cutting station in sequence, and the cutting devices corresponding to the three cutting stations are a first cutting device 2, a second cutting device 3 and a third cutting device 4 respectively. The ratchet wheel feeding device 1, the cutting device, the waste cutting device 5 and the carrying device 8 mentioned in the embodiment are all commonly used structures by those skilled in the art, and are not improvement points of the present invention, and are not described herein again.
In the following, briefly explaining an improvement point in a material strip cutting and conveying system based on CCD detection, the upstream material detecting device 6 includes a CCD image sensor for acquiring image information, a CCD controller for processing the image information acquired by the CCD image sensor, and a light source; the downstream CCD visual detection device 7 comprises a CCD camera for acquiring image information, a CCD controller for controlling the CCD camera and processing the image information acquired by the CCD image sensor, and a light source; the principles and the connection and position between the various components are well known to those skilled in the art. The downstream CCD visual detection device 7 is used for size detection after cutting, compared with incoming material detection, the detection data volume of the downstream CCD visual detection device is larger and more difficult, and the downstream CCD visual detection device can reflect the state of the material more; further avoiding the overflow of the bad products (directly cutting waste and disposing).
The action sequence of each device before adjustment: and each station simultaneously acts under the condition that the material is confirmed to exist in the station, and after the material is completely finished, the material taking and transferring of the moving device 8 are allowed, and then the next circulation action is carried out. Under this kind of action time sequence, the material area is probably not in the steady state that stops when the low reaches CCD visual detection device 7 shoots (when the positioner of third cutting station is carrying out the product location, or when first cutting device 2 and second cutting device 3 are moving, the material area has the shake of upper and lower direction), leads to shooing misjudgment NG, and qualified material passing rate is low. If the photographing is performed first and then other actions are performed simultaneously, although the probability of photographing misjudgment is reduced, the production rhythm is influenced, and the production efficiency is reduced; moreover, when three cutting actions are performed simultaneously, the feeding belt is easy to shift. Therefore, the operation timing needs to be adjusted accordingly, which will be described in detail below.
As shown in fig. 3, the embodiment further discloses a material strip cutting and conveying method based on CCD detection, which uses the material strip cutting and conveying system based on CCD detection; the method comprises the following steps:
s1, when the ratchet wheel discharging device 1 receives an upstream detection completion instruction, an upstream cutting completion instruction, a downstream detection completion instruction, a final cutting completion instruction and a waste cutting completion instruction sent by the controller (action permission conditions are met), allowing the ratchet wheel discharging device 1 to complete the next feeding action and enter the next cycle; all completion instructions issued following the previous cycle are cleared.
S2, assigning values by the controller based on signals (in a common mode, 1 is used for qualified materials and 0 is used for unqualified materials or materials) transmitted by the upstream material detection device 6 to obtain material information data of the current material, storing the material information data (one material corresponds to one material information data and is stored in one storage area), and sending an upstream detection completion instruction; meanwhile, the controller processes material information data corresponding to each material stored in the controller, and judges material states of the corresponding materials at each station based on the processed data, wherein the material states include whether the materials exist and whether the materials are qualified.
The step of judging the material state of the corresponding material under each station specifically comprises the following steps: the ratchet wheel discharging device 1 acts once, the trigger controller carries out displacement processing on material information data of each material stored in the trigger controller once, and the data subjected to displacement processing is matched with trigger data (calculated and stored in advance) corresponding to each station; if the data of certain shift processing is matched with the trigger data corresponding to a certain station, the material state of the material corresponding to the station is judged to be qualified (subsequent cutting and photographing is carried out), and if the data of certain shift processing is not matched with the trigger data corresponding to the station, the material state of the material corresponding to the station is judged to be no material or unqualified (subsequent cutting and photographing is not required).
S3, if qualified materials exist under the last cutting station, the cutting device (the third cutting device 4) on the last cutting station acts to a cutting waiting position (a lower cutter in the third cutting device 4 moves to a cutting position), the positioning device acts to position the material belt, and the next step is continuously executed; and if the material is not available or unqualified at the last cutting station, skipping to the step S6.
S4, the downstream CCD visual detection device 7 of the downstream material detection station executes corresponding actions based on the material state of the corresponding material, and the controller sends out a downstream detection completion instruction; meanwhile, carrying out final cutting to form a material finished product; the waste cutting device carries out corresponding actions (the waste cutting is carried out as long as the station has the material belt), and the controller sends a waste cutting completion instruction.
S5, resetting the cutting device (the third cutting device 4) and the positioning device on the last cutting station, and sending a final cutting completion instruction by the controller; meanwhile, the cutting devices (the first cutting device 2 and the second cutting device 3) of other cutting stations execute corresponding actions based on the material states of the corresponding materials, and the controller sends an upstream cutting completion instruction.
Wherein, step S6 includes:
and S61, the cutting device (the third cutting device 4) corresponding to the last cutting station and the positioning device do not act, and the controller sends a final cutting completion instruction by default.
S62, the downstream CCD visual detection device 7 of the downstream material detection station executes corresponding actions based on the material state of the corresponding material, and the controller sends out a downstream detection completion instruction; meanwhile, the waste cutting device performs corresponding actions, and the controller sends a waste cutting completion instruction.
And S63, executing corresponding actions by the cutting devices (the first cutting device 2 and the second cutting device 3) of other cutting stations based on the corresponding material states, and sending an upstream cutting completion instruction by the controller.
In this embodiment, since the upper cutter of the third cutting device 3 is integrated with the carrying device 8, the upper cutter and the carrying device need to cooperate to complete the final cutting and material taking. Therefore, the step of performing the final trimming in step S4 specifically includes: the carrying device 8 drives the upper cutter to move towards the lower cutter on the corresponding cutting device (third cutting device 4) for final cutting, so as to form a material finished product.
And the following steps are also required to be executed before the step S5 is executed:
and S41, the conveying device 8 conveys the finished product to an initial state.
Step S5 further includes: meanwhile, the material finished product is conveyed to the material placing position by the conveying device 8 and then is restored to the initial state again.
In the above steps S5 and S63, the cutting devices (the first cutting device 2 and the second cutting device 3) of other cutting stations execute corresponding actions based on the respective corresponding material states, and the step of the controller issuing the upstream cutting completion instruction specifically includes:
a. if one or more than one cutting station except the last cutting station is judged to have qualified materials, the corresponding cutting device is reset after executing cutting action, and the controller sends an upstream cutting action completion instruction;
b. if the situation that one or more cutting stations except the last cutting station have no materials or the materials are unqualified is judged, the corresponding cutting device does not execute cutting action, and the controller sends out an upstream cutting action completion instruction in a default mode.
In short, the first cutting device 2 and the second cutting device 3 perform respective actions according to the material information of the materials at the respective corresponding stations; when the action is executed or not executed, the controller sends an upstream cutting action completion instruction, which is to ensure that the ratchet wheel discharging device 1 continuously performs the discharging action.
In the above steps S4 and S62, the step of the downstream CCD vision inspection device 7 of the downstream material inspection station performing corresponding actions based on the material state of the corresponding material, and the step of the controller issuing the downstream inspection completion instruction specifically includes:
c. if the downstream material detection station is judged to have qualified materials, the downstream CCD visual detection device 7 performs photographing action, and the controller reserves or replaces material information data of the materials corresponding to the downstream material detection station stored in the downstream CCD visual detection device 7 based on signals transmitted by the downstream CCD visual detection device (when the downstream material detection station is still qualified, the data is not reserved and replaced, and if the downstream material detection station is changed into unqualified materials, the data is replaced, which will be exemplified below); the controller sends a downstream detection completion instruction;
d. if the downstream material detection station is judged to have no material or the material is unqualified, the downstream CCD visual detection device 7 does not execute the photographing action, and the controller sends out a downstream detection completion instruction in a default mode.
After the time sequence is adjusted, the downstream CCD visual detection device 7 takes a picture before the first cutting device 2 and the second cutting device 3 act after the third cutting device 4 acts to a cutting waiting position and the positioning device positions the material belt; therefore, the material belt does not shake, does not interfere with photographing, improves the detection precision, and avoids misjudgment of qualified materials due to external influence.
Although the downstream CCD vision inspection device 7 takes a picture while starting to perform final cutting (the carrying device 8 drives the upper cutter to move towards the lower cutter on the corresponding cutting device) and waste cutting. However, the photographing time is short, and the time for driving the upper cutter to move in place by the carrying device 8 is far longer than the photographing time, so that the external influence cannot be caused during photographing; because the waste is cut at the downstream of the photographing and third cutting device 4 and the positioning device is used for fixing the material belt, even if the material belt is shaken to a certain degree during the waste cutting, the photographing at the upstream is not influenced.
The technical scheme of the embodiment can reduce the high compensation risk caused by the outflow of the defective products to the minimum; redesigning the timing of the individual device operations increases the yield from 96 percent to 99.7 percent.
PLC data shift commands are well known and conventional to those skilled in the art, but are not familiar to those skilled in the art. To facilitate understanding of the present solution by those skilled in the art, the following schematically illustrates the principle of determining the material state of each station based on data shift (left shift).
If, the interval M of adjacent station in upstream material detection station, first cutting station, second cutting station, downstream material detection station, third cutting station and the useless station of cutting is N times the interval L of material operation when ratchet blowing device 1 action once, and M is N L promptly. Representing that the material under the upstream material detection station needs to move N times (namely the ratchet wheel feeding device 1 acts N times) to reach the first cutting station, and then moves N times to reach the second cutting station, and then is pushed by force in sequence; when the material moves, the material information data matched with the material information data also needs to be shifted, and the moving times are judged based on the data of the shifting processing, so that whether a product moves to a corresponding station or not is known.
The upstream material detecting device 6 transmits a signal (0 or 1) which can represent the material state, and the controller assigns and stores the signal, for example, the assignment of 0 obtains the initial material information data as 000000000, and the assignment of 1 obtains the initial material information data as 0000000000001. The following is a schematic illustration of a product and N is 2.
d0, the initial material information data of the product is 000000001, then the ratchet wheel emptying device 1 acts once, the product moves forward once, and the material information data after the left shift processing to one time becomes 000000010; then the ratchet wheel emptying device 1 acts for 2 times, the product advances for 2 times, the processed material information data becomes 000000100 to be matched with the trigger data under the first cutting station, and then qualified materials are judged to exist under the station (cutting is carried out). And if the initial material information data of the d0 product is 000000000 and cannot be matched with the trigger data after displacement, judging whether the material exists or not at the station or not or judging that the material is unqualified (not cut). And the process of processing the material information data of other products is also the same.
In the step c, it is mentioned that "if it is determined that the downstream material detection station has a qualified material, the downstream CCD vision detection device 7 performs a photographing operation, and the controller performs reservation or replacement processing on material information data of the material stored inside the downstream CCD vision detection device 7 and corresponding to the material at the station based on a signal transmitted by the downstream CCD vision detection device 7". The above data processing procedure is schematically illustrated below again by way of example.
For example, the material information data of one material is 001000000 and is matched with the trigger data under the downstream material detection station; indicating that the qualified material has been detected at the downstream material detection station (determining that there is qualified material at the downstream material detection station); photographing to obtain a detection signal, if the detection is still qualified, sending a qualified signal 1, and keeping the material information data of the material under the station to be 001000000 by the controller; if the material information data 001000000 of the material at the station is detected to be unqualified, a unqualified signal 0 is sent, and the controller replaces the material information data 001000000 of the material at the station with 000000000 (or right shift is available); when the material moves to the third cutting station, the material information data 000000000 of the material is shifted and then cannot be matched with the trigger data under the third cutting station, so that the final cutting is not performed any more, and the material is discarded.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. A material belt cutting and conveying method based on CCD detection is characterized in that a material belt cutting and conveying system based on CCD detection is used, and the material belt cutting and conveying system comprises a controller, a material placing station, a plurality of cutting stations and a waste cutting station, wherein the material placing station, the plurality of cutting stations and the waste cutting station are sequentially arranged in the material belt conveying direction; an upstream material detection station is arranged between the feeding station and the first cutting station, and a downstream material detection station is arranged between the last two cutting stations; the method comprises the following steps:
s1, when the ratchet wheel discharging device at the discharging station receives an upstream detection completion instruction, an upstream cutting completion instruction, a downstream detection completion instruction, a final cutting completion instruction and a waste cutting completion instruction sent by the controller, allowing the ratchet wheel discharging device to complete the next feeding action and enter the next cycle; all of the completion instructions issued following the previous cycle are cleared;
s2, the controller assigns values based on signals transmitted by an upstream material detection device located at the upstream material detection station to obtain and store material information data of the current material, and sends an upstream detection completion instruction; meanwhile, the controller processes material information data corresponding to each material stored in the controller, and judges the material state of the corresponding material at each station based on the processed data, wherein the material state comprises whether the material exists or not and whether the material is qualified or not;
s3, if qualified materials exist under the last cutting station, the cutting device on the last cutting station acts to a cutting waiting position, the positioning device on the last cutting station acts to position the material belt, and the next step is continuously executed; if no material or unqualified material is judged under the last cutting station, the step S6 is executed;
s4, the downstream CCD visual detection device positioned at the downstream material detection station executes corresponding actions based on the material state of the corresponding material, and the controller sends out a downstream detection completion instruction; meanwhile, carrying out final cutting to form a material finished product; the waste cutting device positioned at the waste cutting station performs corresponding actions, and the controller sends out a waste cutting completion instruction;
s5, resetting the cutting device and the positioning device on the last cutting station, and sending the final cutting completion instruction by the controller; meanwhile, the cutting devices of other cutting stations execute corresponding actions based on the material states of the corresponding materials, and the controller sends out the upstream cutting completion instruction;
the step S6 includes:
s61, the cutting device corresponding to the last cutting station and the positioning device do not act, and the controller sends out the final cutting completion instruction by default;
s62, the downstream CCD visual detection device positioned at the downstream material detection station executes corresponding actions based on the material state of the corresponding material, and the controller sends out a downstream detection completion instruction; meanwhile, the waste cutting device carries out corresponding actions, and the controller sends out a waste cutting completion instruction;
s63, the cutting devices of other cutting stations execute corresponding actions based on the corresponding material states, and the controller sends out the upstream cutting completion instruction.
2. The CCD detection-based strip material cutting and conveying method according to claim 1, wherein the step of determining the material state of the corresponding material at each station in step S2 further includes:
the ratchet wheel discharging device acts once to trigger the controller to perform displacement processing on material information data of each material stored in the controller for one time, and the data subjected to displacement processing is matched with trigger data corresponding to each station; and if the data of certain displacement processing is matched with the trigger data corresponding to a certain station, judging that the material state of the material corresponding to the station is qualified, and if not, judging that the material state of the material corresponding to the station is material-free or material-unqualified.
3. The CCD detection-based strip material cutting and conveying method as claimed in claim 1, wherein the strip material cutting and conveying system further includes a carrying station adapted to the last cutting station, and a carrying device for carrying the final material obtained by the last cutting is disposed on the carrying station; and an upper cutter in the cutting device on the last cutting station is arranged on the carrying device.
4. The CCD detection-based strip material cutting and conveying method of claim 3, wherein the step of performing the final cutting in step S4 specifically includes:
the carrying device drives the upper cutter to move towards the direction of the lower cutter on the cutting device, and final cutting is carried out to form the finished material product;
and the following steps are also required to be executed before the step S5 is executed:
and S41, the carrying device carries the finished material to move to an initial state.
5. The CCD detection-based strip material cutting and conveying method of claim 4, wherein said step S5 further comprises:
and meanwhile, the carrying device carries the finished material to the material placing position and then restores to the initial state again.
6. The CCD detection-based strip material cutting and conveying method according to claim 1, wherein in the steps S5 and S63, the cutting devices of other cutting stations perform corresponding actions based on the respective corresponding material states, and the step of the controller issuing an upstream cutting completion instruction specifically includes:
if one or more of the cutting stations except the last cutting station is judged to have qualified materials, the corresponding cutting device is reset after cutting action is executed, and the controller sends an upstream cutting action completion instruction;
and if the situation that one or more cutting stations except the last cutting station have no materials or the materials are unqualified is judged, the corresponding cutting device does not execute cutting action, and the controller sends out an upstream cutting action finishing instruction in a default mode.
7. The CCD-detection-based strip material cutting and conveying method according to claim 1, wherein in the steps S4 and S62, the downstream CCD vision detection device of the downstream material detection station performs corresponding actions based on the material status of the corresponding material, and the step of the controller issuing the downstream detection completion instruction specifically includes:
if the downstream material detection station is judged to have qualified materials, the downstream CCD visual detection device executes photographing action, and the controller reserves or replaces material information data of the materials stored in the downstream CCD visual detection device and corresponding to the downstream material detection station based on signals transmitted by the downstream CCD visual detection device; the controller sends the downstream detection completion instruction;
and if the downstream material detection station is judged to have no material or the material is unqualified, the downstream CCD visual detection device does not execute the photographing action, and the controller sends out the downstream detection completion instruction in a default mode.
8. The CCD detection-based strip material cutting and conveying method of claim 1, wherein the number of the cutting stations is three, and the cutting stations are a first cutting station, a second cutting station and a third cutting station in sequence.
9. The CCD detection-based strip material cutting and conveying method according to claim 1, wherein the upstream material detection device comprises a CCD image sensor or an optical fiber sensor; the downstream CCD visual detection device comprises a CCD camera.
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