CN219383084U

CN219383084U - Double-channel system for detecting appearance defects of chip braid

Info

Publication number: CN219383084U
Application number: CN202320565763.5U
Authority: CN
Inventors: 王孟哲; 梁正南; 赖勉力; 李恩全
Original assignee: Ningbo Jiuzong Intelligent Technology Co ltd
Current assignee: Ningbo Jiuzong Intelligent Technology Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-07-21
Anticipated expiration: 2033-03-22

Abstract

The invention relates to the technical field of chip braid appearance detection, in particular to a double-channel system for detecting chip braid appearance defects. Both conveying runners comprise runner main bodies; the runner main body comprises a fixed track assembly and an adjusting track assembly which are arranged in parallel along the conveying direction of the braid; the upper end surfaces of the fixed track assembly and the adjusting track assembly and the area between the fixed track assembly and the adjusting track assembly form a conveying passage for conveying the chip braid together. As can be appreciated, compared with the single-channel detection method, in the double-channel detection process, the movable multi-station vision detection system can detect two channels in an uninterrupted and alternative way through back and forth movement, and the neutral space is less in midway; thereby the detection efficiency can be improved.

Description

Double-channel system for detecting appearance defects of chip braid

Technical Field

The invention relates to the technical field of chip braid appearance detection, in particular to a double-channel system for detecting chip braid appearance defects.

Background

Chip braid, i.e. braid structure loaded with chips; the upper surface of the chip braid is provided with a plurality of assembling grooves for loading chips and holes for clamping with the needle wheel or the pressing teeth; the lower part of the chip braid is used as a carrier tape.

In the existing semiconductor industry, chip braids are widely used as a common chip packaging method; however, appearance defects such as foreign matter edge breakage, scratches and the like can occur to the chip and the chip braid in the packaging process; so that appearance inspection is required for the chip and the chip braid.

The traditional detection method is mostly an artificial naked eye detection or large-volume multi-station detection method; on one hand, the detection efficiency of the detection method is low; on the other hand, the labor cost and the device arrangement cost are high and the field arrangement requirement is complex. In addition, the existing detection equipment lacks reasonable light source arrangement, and meanwhile, the covering of the front side and the back side of the chip braid, which possibly have appearance defects, is difficult to form; thus, the detection rate of appearance defects of the existing detection method is poor; moreover, because the widths of the chip braids of different manufacturers are different, the traditional detection method is difficult to be used for detecting the chip braids with different widths in a universal mode.

Therefore, the prior art lacks a detection device and a detection method for the appearance defects of the chip braid, which have the advantages of compact structure, reasonable light source arrangement, capability of covering the front side and the back side of the chip braid, higher detection efficiency, better universality and more convenient operation.

Further, in the detection device in the prior art, after the camera and the light source collect the images, the camera and the light source mostly need to wait for the next batch of chips to be fed and transported to the detection position, so that a longer idle period exists in the working process of the camera and the light source, and the efficiency of the detection process is difficult to be better improved.

Therefore, a double-channel transportation system capable of enabling the camera and the light source to alternately detect the chip braid is lacking in the prior art, so that the working idle stage of the camera is preferably reduced, and the detection efficiency is further improved.

Disclosure of Invention

Aiming at the technical problems in the prior art, the invention provides a double-runner chip braid appearance defect detection method, which is realized based on double-runner chip braid appearance defect detection equipment, and is characterized in that: the chip braids on the two flow passages alternately detect, the two flow passages detect by adopting the same multi-station detection system capable of moving along the alternate detection direction, the detection steps adopted by each conveying flow passage are as follows,

step one, one-time feeding

Winding the chip braid to be detected at a material tray at one side of the detection equipment, drawing the chip braid out of the material tray, pulling the chip braid to a conveying runner, and keeping the front face upwards;

Step two, front detection

The chip braid is driven by power to move along the conveying flow channel and enter the detection area, then the power is interrupted to stop conveying, and then the multi-station vision inspection system performs visual appearance image acquisition on the front surface of the chip braid and transmits images to algorithm processing;

step three, collecting materials once

Aiming at the front detection result, when the detection result prompts the defective products, the power is recovered after the judgment processing is manually carried out, and when the detection result does not prompt the defective products, the power is directly recovered without manual processing; then the chip braid is driven by power to move along the conveying flow channel, and the chip braid after the front detection is wound on a material tray at the other side of the detection equipment to be fixedly wound;

step four, secondary feeding

Extracting the chip braid from the material tray wound in the third step into the conveying flow channel and keeping the reverse surface upwards;

step five, reverse detection

The chip braid is driven by power to move along the conveying flow channel and enter the detection area, then the power is interrupted to stop conveying, and then the multi-station vision inspection system performs visual appearance image acquisition on the reverse side of the chip braid and transmits the image to algorithm processing;

step six, secondary material collection

Aiming at the front detection result, when the detection result prompts the defective products, the power is recovered after the judgment processing is manually carried out, and when the detection result does not prompt the defective products, the power is directly recovered without manual processing; then the chip braid is driven by power to move along the conveying flow channel, and the chip braid after the front detection is wound at a material tray for one-time feeding in the step one;

Seventh, blanking

And unloading the chip braid after the detection of the front and back surfaces in the material tray.

As can be appreciated, compared with the single-channel detection method, in the double-channel detection process, the movable multi-station vision detection system can detect two channels in an uninterrupted and alternative way through back and forth movement, and the neutral space is less in midway; thereby the detection efficiency can be improved.

In addition, specifically, the chip braid is a common way of packaging IC chips, and may cause or cause problems such as foreign matter, edge breakage, and scratches in the braid itself during packaging, and may cause or cause problems such as missing chip characters, edge breakage and scratches in the chip itself during packaging. The problems of the braid and the chip cannot be completely covered through single-sided detection, so that each conveying flow channel can sequentially finish detection of the front side and the back side of the detection method to realize comprehensive coverage on the chip and the possible problems in the braid.

In addition, the two trays are matched with a conveying runner to jointly form a braid moving track, so that on one hand, the two trays are identical in structure, and the production and arrangement are relatively convenient, but the detection requirement can be met better; on the other hand, the two trays can be used as a feeding section or a receiving section, and the conveying direction of the conveying runner is bidirectional; therefore, the whole detection process is more flexible to operate, and detection personnel can realize double-sided detection of the front side and the back side through simpler operation so as to detect and cover possible appearance defects of the chip braid to a greater extent.

Further, in order to facilitate flexible operation in the detection process, the coiling and dismantling of the tray also needs to have better flexibility to ensure convenient and stable operation of the whole detection process, and the tray in the detection device also adopts a specific tray to realize flexible operation.

In addition, the front and back detection can preferably cover the appearance defect detection, but how to select the most suitable camera and light source to realize the best detection effect so as to ensure the defective product detection rate is still a problem to be solved in the prior art; the detection method of the invention carries out visual image acquisition on the chip braid at the detection area through a multi-station visual inspection system; the multi-station visual inspection system adopts a specific light source arrangement method to cooperate with a camera to collect images; thereby realizing better image acquisition effect.

Preferably, the dual-runner chip braid appearance defect detection device includes a device body; two conveying runners which are arranged in parallel and used for conveying the chip braids are arranged at the equipment main body; the device main body is also provided with a multi-station visual inspection system for alternately carrying out appearance image acquisition on the chip braids at the two conveying runners so as to identify and detect; the multi-station vision inspection system is movably disposed at the apparatus main body in the alternate inspection direction.

Preferably, both conveying channels comprise a channel body; the runner main body comprises a fixed track assembly and an adjusting track assembly which are arranged in parallel along the conveying direction of the braid; the upper end surfaces of the fixed track assembly and the adjusting track assembly and the area between the fixed track assembly and the adjusting track assembly form a conveying passage for conveying the chip braid together; the two conveying flow passages are in symmetrical structures in the middle of the equipment main body; the length of the conveying flow channel of the remote multi-station vision inspection system is shorter than that of the other conveying flow channel.

Specifically, by means of different arrangement lengths of the two conveying flow channels, on one hand, operators can conveniently distinguish the two conveying flow channels intuitively; on the other hand, the subsequent motor arrangement can be better facilitated and the yielding effect is achieved.

Preferably, the fixed rail assembly comprises a fixed guide rod suspended and fixed at the equipment main body through a supporting block; the adjusting track assembly comprises an adjusting guide rod which is suspended and movably arranged at the main body of the equipment through an adjusting sliding seat; the two adjusting sliding seats are symmetrically arranged on two sides of the length direction of the adjusting guide rod respectively; the adjusting sliding seat is arranged at the adjusting sliding guide rail in a sliding way; the arrangement direction of the sliding guide rail is adjusted to be orthogonal to the braid conveying direction and is consistent with the alternate detection direction; an adjusting screw rod module is arranged at the lower side of the fixed guide rod and the adjusting guide rod; two sliding seats are arranged in the adjusting screw rod module; the two sliding seats are respectively connected with the lower parts of the adjusting guide rods in the two conveying runners so as to carry the adjusting guide rods to move.

Specifically, the widths of the chip braids used by different manufacturers are different, and the space between the fixed guide rod and the adjusting guide rod, namely the width of the conveying flow channel, can be flexibly and conveniently adjusted by adjusting the screw rod module and matching with the sliding guide rail; therefore, the conveying runner provided by the invention can be better suitable for chip braids with different widths, and has better universality.

Preferably, the device main body is provided with a material tray for winding the chip braid at two sides of the two conveying runners along the braid conveying direction; the trays corresponding to the two conveying channels are arranged at a height which is up and down to form a stagger; the material trays are arranged on two sides of the equipment main body through the fixed arms; the tray comprises a tray main body; the tray main body comprises two annular tray bodies which are arranged in parallel at intervals; the two annular disc bodies are connected through a central shaft of the material disc coaxial with the annular disc bodies; the annular outer wall of the central shaft of the material tray is in contact fit with the chip braid for winding; the annular disc bodies on the two sides form axial limit for the chip braid wound at the central shaft of the material disc; a motor seat is arranged on one side of the fixed arm far away from the tray main body; a tray driving motor is arranged at the motor seat, and the output end of the tray driving motor is connected with a tray quick-change shaft through a coupler;

The central shaft of the material tray is detachably arranged at the quick-change shaft of the material tray; a fit through hole for interference fit with the quick-change shaft of the material tray is formed in the middle of the central shaft of the material tray along the axial direction; the circumferential side wall of one side of the motor seat far away from the matching through hole has elasticity; a plurality of arc empty slots are annularly distributed on the circumferential side wall of the side; a depth empty groove along the axial direction of the circumferential outer wall of the quick-change shaft of the material tray is formed.

Specifically, the central shaft of the material tray in the invention is directly pushed onto the quick-change shaft of the material tray along the axial direction through the matched through hole in the installation process of the central shaft of the material tray and the quick-change shaft of the material tray. However, the problem of outward expansion exists in the process of processing the quick-change shaft of the material tray, and the section of the shaft of the quick-change shaft of the material tray which is actually processed is actually similar to the trapezoid shape; namely, the inside diameters of the two ends of the quick change shaft of the material tray are different. Therefore, in the invention, the matching through hole at the central shaft of the material tray adopts an elastic structure on one hand and a plurality of annular empty slots are also arranged on the other hand; therefore, in the process of clamping the material disc into the material disc quick-change shaft along the axial direction, local flexible contact can be formed so that operators can position and install the material disc on the material disc quick-change shaft.

Preferably, a first transition assembly and a second transition assembly are sequentially arranged between the material tray and the conveying runner from the material tray to the conveying runner; the first transition assembly includes a vertically disposed first mounting riser; the upper part of the first mounting vertical plate is respectively provided with a first pinch roller and a first needle wheel from top to bottom; a first transition passage for the chip braid to pass through is formed between the first pinch roller and the first needle wheel; the outer wall of the lower part of the first pinch roller is used for being matched with the upper surface of the chip braid to form pressing and abutting; the upper part of the first pinwheel is matched with the lower surface of the chip braid and is clamped in a hole on the chip braid so as to drive the chip braid to move; a first driving motor is arranged on the side wall of the first installation vertical plate far away from the first pinwheel; the output end of the first stepping motor is positioned and connected with the shaft part of the needle wheel through a connecting shaft; the first pinch roller is arranged at the upper part of the first mounting vertical plate through a first fixing rod coaxial with the first pinch roller; the first pinch roller is movably connected with the first fixed rod, and rotates around the common axis of the first pinch roller and the first fixed rod relative to the first fixed rod;

the second transition assembly includes a vertically disposed second mounting riser; a second pinch roller is arranged at the upper part of the second mounting vertical plate; the second pinch roller is positioned on the upper side of the fixed guide rod; an annular matching groove is formed at the position of the fixed guide rod right below the second pressing wheel; a second transition passage for the chip braid to pass through is formed in the area between the second pinch roller and the annular matching groove; the lower ring body of the second pinch roller is used for being matched with the upper surface of the chip braid; a plurality of pressing teeth for being clamped with holes on the chip braid are formed at the annular side wall of the second pressing wheel along the circumferential direction so as to drive the chip braid to move; the second pinch roller is arranged at a second mounting vertical plate through a second connecting shaft coaxial with the second pinch roller, and a driving wheel is arranged at the second connecting shaft; the lower part of the second mounting vertical plate is provided with a second driving motor for driving the driving wheel to rotate through a driving belt through a second motor mounting plate;

The tray center shaft at the tray main body at two sides of the equipment main body, the first transition passage at the first transition assembly, the second transition passage at the second transition assembly and the conveying passage at the runner main body are matched together to form a complete track through which the chip braid passes.

Specifically, in the actual detection process, since the chip braid is mostly made of plastic materials, the width of the braid is narrow and soft; therefore, the movement of the chip braid driven by friction transmission like a belt is difficult to realize; according to the invention, the first needle wheel and the second pinch roller can drive the chip braid to move through motor driving, so that the stable movement of the chip braid in the actual detection process is ensured; meanwhile, the second pinch roller can also play a role similar to that of a tensioning wheel, so that the chip braid is effectively prevented from being pulled.

In general, a tray central shaft at a tray main body, a first transition passage at a first transition assembly, a second transition passage at a second transition assembly and a conveying passage at a runner main body at two sides of an equipment main body are matched together to form a complete track through which a chip braid passes.

It can be understood that the complete track can preferably ensure that the chip braid is kept on a stable moving route, so that the situation that deviation and dislocation and the like occur in the moving route can be effectively avoided, and the chip braid can be preferably matched with a multi-station detection system for detection.

Preferably, the multi-station visual inspection system comprises a system main body, wherein the system main body is fixedly installed through a visual inspection mounting plate; the multi-station visual inspection system comprises a first detection assembly, a second detection assembly and a third detection assembly, wherein the first detection assembly is used for detecting foreign matters and broken edges, the second detection assembly is used for detecting chip characters, and the third detection assembly is used for detecting broken edge scratches, and the first detection assembly is arranged at the position of the visual inspection mounting plate in the direction of conveying the flow passage in an adjacent vertical mode.

By arranging the first detection component, the second detection component and the third detection component adjacently, the arrangement of the whole multi-station vision detection system can be more compact, so that the detection area on the whole conveying flow channel is concentrated in a certain area; that is, the intersection in the detection ranges of the three groups of detection components serves as the detection area of the present multi-station visual inspection system.

By the arrangement, on one hand, all detection can be completed by only staying at the detection area in the conveying process of the chip braid to be detected, so that the control operation of power is simpler, and the power is interrupted once at the position of the detection area in the whole process, so that the real detection process can be accelerated, and the detection efficiency is improved; on the other hand, the arrangement ensures that the whole structure of the multi-station vision inspection system is more compact and the occupied space is smaller, so that the influence of the vision inspection system on the use and arrangement process of other devices in the equipment main body can be reduced.

Preferably, the first detection assembly comprises a first camera and a first light source, the first light source comprises near-distance infrared light and strip light, and the first light source is matched with the first camera to collect images for detecting foreign matters and broken edges; the second detection assembly comprises a second camera and a second light source, the second light source is a coaxial light source, and the second light source is used for acquiring images in cooperation with the second camera so as to detect chip characters; the third detection assembly comprises a third camera and a third light source, and the third light source is annular light; the third light source is used for matching with a third camera to acquire images so as to detect broken edges and scratches; the first camera, the second camera and the third camera adopt 500W cameras, and the shooting ranges of the first camera, the second camera and the third camera cover the detection area; the first light source, the second light source and the third light source all work in a stroboscopic mode and flash at intervals; the lighting ranges of the first light source, the second light source and the third light source all cover the detection area.

Specifically, the model of the near infrared light is CST-ROS78-R, the vertical distance between the near infrared light and the area to be detected is kept at 40mm, and in addition, the red combined strip light is adjustable by 45 degrees compared with the horizontal plane; the strip light is white and is arranged at the bottom of the area to be detected, the type of the strip light is sharp vision P-BLF-237-18-W, and the vertical distance between the strip light and the area to be detected is kept at 3mm; the good lighting effect can be realized through the cooperation between the near infrared light and the strip light, so that the acquired image is ensured to be clear; and further, the image algorithm can identify foreign matters and broken edges at the braid or the chip so as to judge defective products.

In addition, the second light source is a coaxial light source, the specific model of the coaxial light source is P-COL-55-40-W, the coaxial light source is white, the vertical distance between the white coaxial light source and the area to be detected is kept at 20mm, and the white coaxial light source of the model can achieve a better lighting effect so as to ensure that the acquired image is clear; and further, the image algorithm can identify the chip characters so as to judge defective products.

Further, the third light source is an annular light source, the model of the annular light source is sharp-vision P-RL-74-30-R, the vertical distance between the red annular light source and the area to be detected is kept to be 15mm, and specifically, the annular light source can be used for polishing to improve the quality of the acquired image.

The camera body adopts a 500W industrial camera, the model of the lens is east MC5028B, and the vertical distance between the lens and the area to be detected is kept to be 100+/-1 mm. Therefore, the better image acquisition effect can be realized by matching with each light source.

Preferably, the visual inspection mounting plate is mounted at the equipment main body through a visual inspection module; the visual installation module comprises a visual installation frame which is vertically arranged; the visual mounting frame is provided with two visual mounting frames which are symmetrically arranged on two sides of the visual inspection mounting plate; the upper parts of the visual sliding frames at the two sides are connected with the same visual placement plate which is horizontally arranged; a visual movable guide rail and a visual screw rod module are arranged on the upper end surface of the visual placement plate along the alternate detection direction; the visual screw rod module is driven by a visual servo motor; the visual moving guide rail and the screw rod sliding rail in the visual screw rod module are respectively arranged right above the visual mounting frames on two sides; the visual sliding blocks are arranged at the visual moving guide rail along two intervals and are in sliding fit with the visual moving guide rail; a screw rod sliding seat which axially moves along the screw rod is arranged at the screw rod sliding rail; the upper parts of the visual sliding block and the screw rod sliding seat are connected with a visual inspection connecting plate connected with a visual inspection mounting plate; an L-shaped induction piece is connected to the outer side wall of the screw rod sliding seat; two groups of sensors matched with the induction piece are arranged at the side wall of the same side of the screw rod slide rail and the induction piece; the distance between the two groups of sensors corresponds to the distance between the two conveying runners and is used for identifying and automatically controlling the alternate detection of the two conveying runners; the signal of the sensor is output to the visual servo motor for controlling the screw rod sliding seat to control the movement of the multi-station visual inspection system.

Specifically, the structure can ensure that the multi-station vision inspection system stably moves along a stable moving route, so that the multi-station vision inspection system can smoothly cooperate with the adjustment of the conveying flow channel to move; and further, the detection personnel can work conveniently.

In addition, the structure of the invention can better realize the automatic back and forth movement of the multi-station vision inspection system between the detection areas at the two conveying flow passages through the cooperative cooperation between the sensing sheet, the sensor and the servo vision motor; the method has better convenience; thus, a better operation support can be provided for the alternate uninterrupted detection of the two conveying channels.

Preferably, a defective product marking component is arranged at one side of the multi-station vision inspection system along the conveying direction at the equipment main body; the defective product marking assembly comprises a vertical lifting module arranged along the vertical direction; a lifting seat which moves along the vertical direction is arranged at the vertical lifting module; the lifting seat is connected with a marking moving module; the marking moving module comprises a marking machine and a horizontal moving module which drives the marking machine to move along the alternate detection direction;

the vertical lifting module comprises a lifting installation frame arranged along the vertical direction; the lifting installation frame is installed at the equipment main body through the installation base; a vertical cavity is formed on the inner side of the lifting mounting frame; slope parts are formed on two sides of the vertical cavity, and a vertical part along the vertical direction is formed in the middle; a vertical screw rod is arranged at the vertical part of the vertical cavity along the vertical direction; the lower end of the vertical screw rod is movably arranged at the bottom of the vertical part; the upper end of the vertical screw rod penetrates through the upper end surface of the lifting installation frame to extend out; the upper end of the vertical screw rod is fixedly connected with a manual crank used for driving the vertical screw rod to rotate;

A screw rod sliding block which is in sliding fit with the vertical screw rod along the vertical direction is arranged at the vertical screw rod; the lifting seat is arranged at the screw rod sliding block; the lifting seat comprises a lifting main board and lifting side boards positioned at two sides of the lifting main board; the marking moving module is horizontally arranged on the upper surface of the lifting side plate; a plurality of screw holes are formed in the middle of the lifting main board; the lifting main board and the screw rod sliding block are detachably connected through threaded fit between a threaded fastener and a screw hole; a rolling wheel is detachably and movably arranged on two sides of one side end surface of the lifting main board far away from the lifting side plate; an arc vertical groove along the vertical direction is formed on one side of the slope part of the vertical cavity, which is far away from the vertical part; a cylindrical limiting rod along the vertical direction is arranged at the arc vertical groove; the rolling cambered surface of the rolling wheel is in rolling fit with the arc-shaped side wall of the cylindrical limiting rod to form limiting;

the marking moving module comprises rodless cylinders arranged along alternate detection directions; the upper part of the cylinder sliding block of the rodless cylinder is connected with a marking moving plate which is arranged along the alternate detection direction; the upper part of the marking moving plate is provided with a marking machine facing one side of the conveying flow channel;

the marking machine comprises a machine body and a marking head; the machine body is fixedly connected with the marking moving plate; the marking head is arranged at one side of the machine body near the conveying flow channel; the marking direction of the marking head faces to the right lower part.

Specifically, when the marking machine is used, the vertical movement of the marking machine can be realized through the lifting seat so as to ensure that a proper distance is kept between the marking machine and an object to be marked so as to ensure that the marking work is smoothly carried out; in addition, the horizontal moving module can carry the marking machine to move along the alternate detection direction, so that the chip braids on the two conveying runners can be marked alternately; and furthermore, the marking neutral period of the marking machine is less, so that higher efficiency can be maintained.

Drawings

Fig. 1 is a schematic structural view of a main body of the apparatus in embodiment 2;

FIG. 2 is a schematic view of the flow channel body of FIG. 1, a first transition assembly, a second transition assembly, and a tray;

FIG. 3 is a schematic view of the structure of FIG. 1 from another perspective;

FIG. 4 is a schematic view of the tray and the fixing arm in FIG. 2;

FIG. 5 is a schematic view of the tray body of FIG. 4;

FIG. 6 is a schematic view of the first transition assembly of FIG. 2;

FIG. 7 is a schematic view of the second transition assembly of FIG. 2;

FIG. 8 is a schematic diagram of the multi-station vision inspection system and the vision installation module in FIG. 1;

FIG. 9 is a schematic diagram of the visual mounting module of FIG. 8;

FIG. 10 is an enlarged schematic view of FIG. 9A;

FIG. 11 is a schematic structural view of the defective marking assembly of FIG. 1;

FIG. 12 is a schematic view of the vertical lift module of FIG. 11;

fig. 13 is a schematic structural diagram of the marking moving module and the marking machine in fig. 11.

Detailed Description

For a further understanding of the present invention, the present invention will be described in detail with reference to examples. It is to be understood that the examples are illustrative of the present invention and are not intended to be limiting.

Example 1

The embodiment provides a double-runner chip braid appearance defect detection method, which is realized based on double-runner chip braid appearance defect detection equipment, and is characterized in that: the chip braids on the two flow passages alternately detect, the two flow passages detect by adopting the same multi-station detection system capable of moving along the alternate detection direction, the detection steps adopted by each conveying flow passage are as follows,

step one, one-time feeding

step two, front detection

Step three, collecting materials once

step four, secondary feeding

step five, reverse detection

step six, secondary material collection

Seventh, blanking

In addition, specifically, the chip braid is a common way of packaging IC chips, and may cause or cause problems such as foreign matter, edge breakage, and scratches in the braid itself during packaging, and may cause or cause problems such as missing chip characters, edge breakage and scratches in the chip itself during packaging. The problems of the braid and the chip cannot be completely covered through single-sided detection, so that each conveying flow channel in the detection method in the embodiment can sequentially complete the detection of the front side and the back side so as to realize comprehensive coverage for the possible problems in the chip and the braid.

In addition, in the embodiment, two trays are matched with a conveying runner to jointly form a braid moving track, on one hand, the two trays have the same structure, and the production and arrangement are relatively convenient, but the detection requirement can be better met; on the other hand, the two trays can be used as a feeding section or a receiving section, and the conveying direction of the conveying runner is bidirectional; therefore, the whole detection process is more flexible to operate, and detection personnel can realize double-sided detection of the front side and the back side through simpler operation so as to detect and cover possible appearance defects of the chip braid to a greater extent.

In addition, the front and back detection can preferably cover the appearance defect detection, but how to select the most suitable camera and light source to realize the best detection effect so as to ensure the defective product detection rate is still a problem to be solved in the prior art; the detection method in the embodiment carries out visual image acquisition on the chip braid at the detection area through a multi-station visual inspection system; the multi-station visual inspection system adopts a specific light source arrangement method to cooperate with a camera to collect images; thereby realizing better image acquisition effect.

Example 2

The present embodiment provides a double-channel chip braid appearance defect detection apparatus suitable for the detection method in embodiment 1, which includes an apparatus main body 100; two conveying runners which are arranged in parallel and used for conveying the chip braids are arranged at the equipment main body 100; the device main body 100 is also provided with a multi-station visual inspection system for alternately carrying out appearance image picking on the chip braids at the two conveying runners so as to identify and detect; the multi-station vision inspection system is movably arranged at the apparatus main body 100 in the alternate inspection direction.

Both transport channels include a channel body 110; the runner main body 110 includes a fixed rail assembly and an adjustment rail assembly arranged in parallel along a braid conveying direction; the upper end surfaces of the fixed track assembly and the adjusting track assembly and the area between the fixed track assembly and the adjusting track assembly form a conveying passage for conveying the chip braid together; both conveying flow channels are in symmetrical structures at the middle part of the equipment main body 100; the length of the conveying flow channel of the remote multi-station vision inspection system is shorter than that of the other conveying flow channel.

Further, in the present embodiment, the fixed rail assembly includes a fixed guide bar 111 suspended and fixed at the apparatus main body 100 by a support block 210; the adjusting rail assembly comprises an adjusting guide rod 112 which is movably arranged at the equipment main body 100 in a suspending way through an adjusting sliding seat 220; the two adjusting sliding seats 220 are symmetrically arranged on two sides of the adjusting guide rod 112 in the length direction; the adjustment sliding seat 220 is slidably disposed at the adjustment sliding rail 230; the arrangement direction of the adjustment slide rail 230 is orthogonal to the braid conveying direction and is consistent with the alternate detecting direction; an adjusting screw module 310 is disposed at the lower side of the fixed guide bar 111 and the adjusting guide bar 112; two sliding seats are arranged in the adjusting screw rod module 310; the two sliding seats are respectively connected with the lower parts of the adjusting guide rods 112 in the two conveying channels so as to carry the adjusting guide rods 112 to move.

Specifically, the widths of the chip braids used by different manufacturers are different, and in this embodiment, the distance between the fixed guide rod 111 and the adjusting guide rod 112, that is, the width of the conveying flow channel, can be adjusted flexibly and conveniently by adjusting the screw rod module 310 and matching with the adjusting sliding guide rail 230; therefore, the conveying runner in the embodiment can be better suitable for chip braids with different widths, and has better universality.

The device main body 100 is provided with a material tray for winding the chip braid at two sides of the two conveying runners along the braid conveying direction; the trays are mounted to both sides of the apparatus body 100 through the fixing arms 240; the trays corresponding to the two conveying channels are arranged at a height which is up and down to form staggered abdication;

specifically, by the structure, the mutual interference between the two conveying flow passages can be preferably reduced, so that the independent stable operation between the two conveying flow passages is ensured.

The tray includes a tray body 250; the tray main body 250 includes two annular tray bodies 251 arranged in parallel at intervals; the two annular disc bodies 251 are connected through a central disc shaft 252 coaxial with the annular disc bodies 251; the annular outer wall of the central shaft 252 of the material tray is in contact fit with the chip braid for winding; the annular disc bodies 251 on the two sides form axial limit for the chip braid wound at the central shaft 252 of the material disc; a motor seat 410 is arranged on one side of the fixed arm 240 far away from the tray main body 250; the motor seat 410 is provided with a tray driving motor 420, and the output end of the tray driving motor 420 is connected with a tray quick-change shaft 440 through a coupler 430;

The tray center shaft 252 is detachably installed at the tray quick-change shaft 440; the middle part of the central shaft 252 of the material tray is axially provided with a fit through hole for interference fit with the quick change shaft 440 of the material tray; the circumferential side wall of one side of the motor seat 410 far from the matching through hole has elasticity; a plurality of arc-shaped empty slots 253 are annularly distributed on the circumferential side wall of the side; a depth empty groove along the axial direction of the tray quick-change shaft 440 is formed at the circumferential outer wall thereof.

Specifically, the tray center shaft 252 in the present embodiment pushes the tray center shaft 252 onto the tray quick-change shaft 440 through the mating through hole directly in the axial direction during the installation process with the tray quick-change shaft 440. However, there is a problem that the tray quick-change shaft 440 actually expands during the processing, and the shaft section of the tray quick-change shaft 440 actually processed is actually similar to a trapezoid shape; i.e., there is a difference in the inner diameters of both ends of the tray quick-change shaft 440. Thus, for this case, the fitting through hole at the tray center shaft 252 in the present embodiment adopts an elastic structure on the one hand, and a plurality of annular empty grooves are also arranged on the other hand; so that a local flexible contact can be formed in the process of clamping the tray into the tray quick-change shaft 440 in the axial direction so that an operator can position and install the tray on the tray quick-change shaft 440.

A first transition assembly 130 and a second transition assembly 140 are sequentially arranged between the tray and the conveying runner from the tray to the conveying runner; the first transition assembly 130 includes a vertically disposed first mounting riser 131; the upper part of the first installation riser 131 is respectively provided with a first pinch roller 132 and a first pinwheel 133 from top to bottom; a first transition passage for the chip braid to pass through is formed between the first pinch roller 132 and the first pinwheel 133; the lower outer wall of the first pinch roller 132 is used for being matched with the upper surface of the chip braid to form pressing and abutting; the upper part of the first pinwheel 133 is matched with the lower surface of the chip braid and is clamped in a hole on the chip braid so as to drive the chip braid to move; a first stepping motor 134 is disposed at a side wall of the first mounting riser 131 remote from the first pinwheel 133; the output end of the first stepping motor 134 is positioned and connected with the shaft part of the needle wheel through a connecting shaft; the first pressing wheel 132 is arranged at the upper part of the first mounting riser 131 through a first fixing rod coaxial with the first pressing wheel; the first pinch roller 132 is movably connected with the first fixed rod, and the first pinch roller 132 rotates around the common axis of the first pinch roller 132 and the first fixed rod relative to the first fixed rod;

the second transition assembly 140 includes a vertically disposed second mounting riser 141; a second pressing wheel 142 is arranged at the upper part of the second mounting vertical plate 141; the second pressing wheel 142 is positioned on the upper side of the fixed guide rod 111; an annular matching groove is formed at the position of the fixed guide rod 111 right below the second pressing wheel 142; the area between the second pinch roller 142 and the annular mating groove forms a second transition path for the chip braid to pass through; the lower ring body of the second pinch roller 142 is used for being matched with the upper surface of the chip braid; a plurality of pressing teeth 1421 for being clamped with holes on the chip braid are formed at the annular side wall of the second pressing wheel 142 along the circumferential direction so as to drive the chip braid to move; the second pressing wheel 142 is arranged at the second mounting vertical plate 141 through a second connecting shaft 143 coaxial with the second pressing wheel, and a driving wheel 144 is arranged at the second connecting shaft 143; the lower part of the second installation riser 141 is installed with a second driving motor 146 for driving the driving wheel 144 to rotate through a driving belt by a second motor installation plate 145;

Specifically, in the actual detection process, since the chip braid is mostly made of plastic materials, the width of the braid is narrow and soft; therefore, the movement of the chip braid driven by friction transmission like a belt is difficult to realize; in this embodiment, the first pin wheel 133 and the second pressing wheel 142 can drive the chip braid to move through motor driving, so as to ensure the stable movement of the chip braid in the actual detection process; meanwhile, the second pressing wheel 142 can also act like a tensioning wheel, so that the chip braid is effectively prevented from being damaged by pulling.

In general, the tray center axis 252 at the tray body 250, the first transition passage at the first transition assembly 130, the second transition passage at the second transition assembly 140, and the transport passage at the runner body 110 on both sides of the apparatus body 100 cooperate together to form a complete track through which the chip tape passes.

Example 3

The present embodiment provides a multi-station detection system suitable for use in the detection method of embodiment 1 or the detection apparatus of embodiment 2; it includes a system body 120, the system body 120 is fixed by a visual inspection mounting plate 810; the multi-station vision inspection system includes a first inspection assembly 820 for inspecting foreign objects and broken edges, a second inspection assembly 830 for inspecting chip characters, and a third inspection assembly 840 for inspecting broken edge scratches, which are vertically disposed adjacent to each other at the vision inspection mounting plate 810 in the flow path conveying direction.

Specifically, by disposing the first detecting component 820, the second detecting component 830 and the third detecting component 840 adjacently, the arrangement of the whole multi-station vision detecting system can be made more compact, thereby ensuring that the detecting area on the whole conveying flow channel is concentrated in one determined area; that is, the intersection in the detection ranges of the three groups of detection components serves as the detection area of the present multi-station visual inspection system.

By the arrangement, on one hand, all detection can be completed by only staying at the detection area in the conveying process of the chip braid to be detected, so that the control operation of power is simpler, and the power is interrupted once at the position of the detection area in the whole process, so that the real detection process can be accelerated, and the detection efficiency is improved; on the other hand, the arrangement makes the whole structure of the multi-station vision inspection system more compact and occupies smaller space, so that the influence of the vision inspection system on the use and arrangement process of other devices in the equipment main body 100 can be reduced.

The first detection assembly 820 includes a first camera and a first light source, the first light source includes near infrared light and bar light, the first light source cooperates with the first camera to collect images for detecting foreign objects and broken edges; the second detection component 830 includes a second camera and a second light source, where the second light source is a coaxial light source, and the second light source is used to collect images in cooperation with the second camera to detect the chip characters; the third detection assembly 840 includes a third camera and a third light source, the third light source being annular light; the third light source is used for matching with a third camera to acquire images so as to detect broken edges and scratches; the first camera, the second camera and the third camera adopt 500W cameras, and the shooting ranges of the first camera, the second camera and the third camera cover the detection area; the first light source, the second light source and the third light source all work in a stroboscopic mode and flash at intervals; the lighting ranges of the first light source, the second light source and the third light source all cover the detection area.

Specifically, the model of the short-distance infrared light in the embodiment is CST-ROS78-R, the vertical distance between the short-distance infrared light and the area to be detected is kept at 40mm, and in addition, the red combined strip light is adjustable by 45 degrees compared with the horizontal plane; the strip light is white and is arranged at the bottom of the area to be detected, the type of the strip light is sharp vision P-BLF-237-18-W, and the vertical distance between the strip light and the area to be detected is kept at 3mm; the good lighting effect can be realized through the cooperation between the near infrared light and the strip light, so that the acquired image is ensured to be clear; and further, the image algorithm can identify foreign matters and broken edges at the braid or the chip so as to judge defective products.

In the embodiment, a 500W industrial camera is adopted as a camera body, a model of a lens is east MC5028B, and the vertical distance between the lens and a region to be detected is kept to be 100+/-1 mm. Therefore, the better image acquisition effect can be realized by matching with each light source.

In addition, the multi-station vision inspection system in the embodiment can also cooperate with the adjustment of the conveying flow channel to adjust the position; thereby ensuring that the multi-station vision inspection system can cover the detection area on the conveying runner; specifically, the vision inspection mounting plate 810 is mounted at the apparatus main body 100 through the vision mounting module 850; the vision mounting module 850 includes a vertically arranged vision mounting bracket 851; the vision mounting frame 851 is provided with two vision mounting plates which are symmetrically arranged at two sides of the vision mounting plate 810; the upper parts of the visual sliding frames on the two sides are connected with the same visual placement plate 852 which is horizontally arranged; a visual moving guide 853 and a visual screw module 854 are arranged at the upper end surface of the visual setting plate 852 along the alternate detection direction; the visual screw rod module 854 is driven by a visual servo motor 855;

the screw slide rails in the visual moving guide rail 853 and the visual screw module 854 are respectively arranged right above the visual mounting frames 851 on the two sides; a visual slide block 856 is arranged at the visual movement rail 853 along and in sliding engagement with two spaced apart visual movement blocks; a screw sliding seat 857 which moves along the axial direction of the screw is arranged at the screw sliding rail; the upper parts of the visual sliding block 856 and the screw sliding seat 857 are connected with a visual inspection connecting plate 858 connected with the visual inspection mounting plate 810; an L-shaped induction piece 859 is connected to the outer side wall of the screw rod sliding seat 857; two groups of sensors 8510 matched with the sensing piece 859 are arranged at the side wall of the screw rod sliding rail on the same side as the sensing piece 859; the distance between the two groups of sensors 8510 corresponds to the distance between the two conveying runners and is used for identifying and automatically controlling the alternate detection of the two conveying runners; the signal of the sensor 8510 is output to the vision servo motor 855 for controlling the screw sliding seat 857 to control the movement of the multi-station vision inspection system.

In addition, the structure in the embodiment can better realize the automatic back and forth movement of the multi-station vision inspection system between the detection areas at the two conveying flow passages through the cooperative cooperation between the sensing piece 859 and the sensor 8510 and the servo vision motor; the method has better convenience; thus, a better operation support can be provided for the alternate uninterrupted detection of the two conveying channels.

Example 4

The present embodiment provides a defective marking assembly 150 that can be used for marking the defective product detected in embodiment 1, where the defective marking assembly 150 includes a vertical lifting module 151 arranged along a vertical direction; a lifting seat 152 moving in a vertical direction is arranged at the vertical lifting module 151; the lifting seat 152 is connected with a marking moving module; the marking moving module comprises a marking machine 154 and a horizontal moving module 153 which drives the marking machine 154 to move along the alternate detection direction.

Specifically, when in use, the marking machine 154 can move in the vertical direction through the lifting seat 152 to ensure that a proper distance is kept between the marking machine 154 and an object to be marked so as to ensure that the marking work is smoothly carried out; in addition, the horizontal moving module 153 can carry the marking machine 154 to move along the alternative detection direction, so that the chip braids on the two conveying runners can be marked alternatively; further, the marking neutral period of the marking machine 154 is less, so that high efficiency can be maintained.

The vertical lifting module 151 includes a lifting mounting frame 1511 arranged in a vertical direction; the elevation mounting frame 1511 is mounted at the apparatus main body 100 through a mounting base 1512; the inside of the elevation mounting frame 1511 is formed with a vertical cavity 1513; slope parts are formed on two sides of the vertical cavity 1513, and a vertical part along the vertical direction is formed in the middle; a vertical screw 1514 is arranged in the vertical direction at the vertical portion of the vertical cavity 1513; the lower end of the vertical screw 1514 is movably arranged at the bottom of the vertical part; the upper end of the vertical screw 1514 passes through the upper end surface of the lifting mounting frame 1511 and extends out; the upper end of the vertical screw 1514 is fixedly connected with a manual crank 1515 for driving the vertical screw 1514 to rotate;

Specifically, an arrangement space can be preferably provided for the vertical screw 1514 by the vertical portion; and the slope portions at both sides of the vertical cavity 1513 can preferably keep the center of gravity of the entire lift mount 1511 stable without causing the mass of the entire lift mount 1511 to be too small due to the vertical cavity 1513, thereby affecting the stability of the subsequent mounting arrangement process.

A screw rod sliding block 1516 which is in sliding fit with the vertical screw rod 1514 along the vertical direction is arranged at the vertical screw rod; the lifting seat 152 is arranged at the screw rod sliding block 1516; the lifting base 152 comprises a lifting main board 1521 and lifting side boards 1522 positioned on both sides of the lifting main board 1521; the marking moving module is horizontally arranged at the upper surface of the lifting side plate 1522; a plurality of screw holes 15211 are formed at the middle part of the elevating main plate 1521; the lifting main plate 1521 and the screw rod sliding block 1516 are detachably connected through threaded fit between a threaded fastener and a screw hole 15211; a rolling wheel 1517 is detachably and movably arranged on two sides of one side end surface of the lifting main plate 1521 far away from the lifting side plate 1522; a circular arc vertical groove along the vertical direction is formed on one side of the slope part of the vertical cavity 1513, which is far away from the vertical part; a cylindrical limit rod 1518 along the vertical direction is arranged at the arc vertical groove; the rolling cambered surface of the rolling wheel 1517 is in rolling fit with the arc-shaped side wall of the cylindrical limit rod 1518 to form limit;

As can be appreciated, stable connection between the lifting main plate 1521, i.e., the lifting seat 152 and the screw slider 1516, can be preferably achieved through the screw holes 15211; and is convenient to install (disassemble). In addition, the cooperation between the rolling wheel 1517 and the cylindrical limit rod 1518 can function similar to a guide rail on one hand to ensure the movement stability of the lifting seat 152 along the vertical direction following the screw rod sliding block 1516; on the other hand, from the installation point of view, the lifting main plate 1521 is detachably installed with the screw rod sliding block 1516, so that during installation, an installer can connect the lifting main plate 1521 with the screw rod sliding block 1516 through the screw hole 15211 and then install the sliding wheel on the lifting main plate 1521, thereby not affecting the installation process; the disassembly is the same.

The marking moving module includes rodless cylinders 1531 arranged in alternating detection directions; a marking moving plate 1533 arranged along the alternate detection direction is connected to the upper part of the cylinder sliding block 1532 of the rodless cylinder 1531; the upper part of the marking moving board 1533 is provided with a marking machine 154 facing one side of the conveying flow path;

specifically, the rodless cylinder 1531 of the present embodiment is preferably space-saving and self-guiding and lightweight, so that it can be stably mounted on the lift base 152 without affecting the stability of the center of gravity of the entire lift mount 1511.

The marking machine 154 includes a body and a marking head 1541; the machine body is fixedly connected with the marking mobile board 1533; the marking head 1541 is arranged at one side of the machine body near the conveying runner; the marking direction of the marking head 1541 is directed directly below.

It can be appreciated that the needle wheel, the pinch roller and the braid driving servo motor of the embodiment can preferably drive the chip braid to move along the conveying runner; because most of the chip braids are of plastic structure, and the width of the braids is narrow and soft; therefore, the movement of the chip braid driven by friction transmission like a belt is difficult to realize; therefore, the chip braid can be driven to move better and stably through the cooperative cooperation between the pinwheel and the pinch roller; thereby ensuring the smooth and stable operation of the whole detection process.

It is to be understood that, based on one or several embodiments provided herein, those skilled in the art may combine, split, reorganize, etc. the embodiments of the present application to obtain other embodiments, which do not exceed the protection scope of the present application.

The invention and its embodiments have been described above by way of illustration and not limitation, and the examples are merely illustrative of embodiments of the invention and the actual construction is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.

Claims

1. The double-channel system for detecting the appearance defects of the chip braid is arranged at a chip braid appearance defect detection device and is matched with the multi-station vision detection system to detect the appearance of the chip braid; the method is characterized in that: the device comprises two conveying runners; both conveying channels comprise a channel body (110); the runner main body (110) comprises a fixed track assembly and an adjusting track assembly which are arranged in parallel along the conveying direction of the braiding; the upper end surfaces of the fixed track assembly and the adjusting track assembly and the area between the fixed track assembly and the adjusting track assembly form a conveying passage for conveying the chip braid together; the two conveying flow passages are in symmetrical structures at the middle part of the equipment main body (100); the length of the conveying flow channel of the remote multi-station vision inspection system is shorter than that of the other conveying flow channel.

2. A dual-channel system for chip braid appearance defect detection as claimed in claim 1, wherein: the fixed rail assembly comprises a fixed guide rod (111) which is suspended and fixed at the equipment main body (100) through a supporting block (210); the adjusting track assembly comprises an adjusting guide rod (112) which is movably arranged at the equipment main body (100) in a suspending way through an adjusting sliding seat (220); the two adjusting sliding seats (220) are symmetrically arranged on two sides of the length direction of the adjusting guide rod (112); the adjusting sliding seat (220) is arranged at the adjusting sliding guide rail (230) in a sliding way.

3. A dual-channel system for chip braid appearance defect detection as claimed in claim 2, wherein: the arrangement direction of the sliding guide rail (230) is adjusted to be orthogonal to the braid conveying direction and consistent with the alternate detecting direction; an adjusting screw rod module (310) is arranged at the lower side of the fixed guide rod (111) and the adjusting guide rod (112); two sliding seats are arranged in the adjusting screw rod module (310); the two sliding seats are respectively connected with the lower parts of the adjusting guide rods (112) in the two conveying channels so as to carry the adjusting guide rods (112) to move.

4. A dual-channel system for chip braid appearance defect detection as claimed in claim 3, wherein: the device main body (100) is provided with a material tray for winding the chip braid at two sides of the two conveying runners along the braid conveying direction; the trays corresponding to the two conveying channels are arranged at a height which is up and down to form a stagger; the trays are arranged on two sides of the equipment main body (100) through fixing arms (240); the tray includes a tray body (250).

5. The dual-channel system for chip braid appearance defect detection of claim 4, wherein: the tray main body (250) comprises two annular tray bodies (251) which are arranged in parallel at intervals; the two annular disc bodies (251) are connected through a material disc central shaft (252) coaxial with the annular disc bodies (251); the annular outer wall of the central shaft (252) of the material tray is in contact fit with the chip braid for winding; the annular disc bodies (251) on the two sides form axial limit for the chip braid wound at the central shaft (252) of the material disc; a motor seat (410) is arranged on one side of the fixed arm (240) far away from the tray main body (250); the motor seat (410) is provided with a tray driving motor (420), and the output end of the tray driving motor (420) is connected with a tray quick-change shaft (440) through a coupler (430).

6. The dual-channel system for chip braid appearance defect detection of claim 5, wherein: the material tray central shaft (252) is detachably arranged at the material tray quick-change shaft (440); the middle part of the central shaft (252) of the material tray is axially provided with a fit through hole for interference fit with the quick-change shaft (440) of the material tray; the circumferential side wall of one side of the motor seat (410) far away from the matching through hole has elasticity; a plurality of arc-shaped empty slots (253) are annularly distributed on the circumferential side wall of the side; a depth empty groove along the axial direction of the tray quick-change shaft (440) is formed at the circumferential outer wall of the tray quick-change shaft.

7. The dual-channel system for chip braid appearance defect detection of claim 4, wherein: a first transition assembly (130) and a second transition assembly (140) are sequentially arranged between the material tray and the conveying runner from the material tray to the conveying runner.

8. A dual-channel system for chip braid appearance defect detection as claimed in claim 7, wherein: the first transition assembly (130) comprises a first vertically arranged mounting riser (131); the upper part of the first mounting vertical plate (131) is respectively provided with a first pinch roller (132) and a first needle wheel (133) from top to bottom; a first transition passage for the chip braid to pass through is formed between the first pinch roller (132) and the first pinwheel (133); the outer wall of the lower part of the first pinch roller (132) is used for being matched with the upper surface of the chip braid to form pressing and abutting; the upper part of the first pinwheel (133) is matched with the lower surface of the chip braid and is clamped in a hole on the chip braid so as to drive the chip braid to move; a first driving motor is arranged on the side wall of the first mounting vertical plate (131) far away from the first needle wheel (133); the output end of the first stepping motor (134) is positioned and connected with the shaft part of the needle wheel through a connecting shaft; the first pinch roller (132) is arranged at the upper part of the first mounting vertical plate (131) through a first fixing rod coaxial with the first pinch roller; the first pressing wheel (132) is movably connected with the first fixing rod, and the first pressing wheel (132) rotates around the common axis of the first pressing wheel and the first fixing rod relative to the first fixing rod.

9. A dual-channel system for chip braid appearance defect detection as claimed in claim 8, wherein: the second transition assembly (140) comprises a vertically arranged second mounting riser (141); a second pinch roller (142) is arranged at the upper part of the second mounting vertical plate (141); the second pinch roller (142) is positioned on the upper side of the fixed guide rod (111); an annular matching groove is formed at the position of the fixed guide rod (111) right below the second pressing wheel (142); the area between the second pinch roller (142) and the annular matching groove forms a second transition passage for the chip braid to pass through; the lower ring body of the second pinch roller (142) is used for being matched with the upper surface of the chip braid; a plurality of pressing teeth (1421) for being clamped with holes on the chip braid are formed at the annular side wall of the second pressing wheel (142) along the circumferential direction so as to drive the chip braid to move; the second pressing wheel (142) is arranged at the second mounting vertical plate (141) through a second connecting shaft (143) coaxial with the second pressing wheel, and a driving wheel (144) is arranged at the second connecting shaft (143); the lower part of the second mounting vertical plate (141) is provided with a second driving motor (146) for driving the driving wheel (144) to rotate through a driving belt through a second motor mounting plate (145);

the tray center shafts (252) at the tray main bodies (250) at the two sides of the equipment main body (100), the first transition passage at the first transition assembly (130), the second transition passage at the second transition assembly (140) and the conveying passage at the runner main body (110) are matched together to form a complete track through which the chip braid passes.

10. A dual-channel system for chip braid appearance defect detection as claimed in claim 1, wherein: the multi-station visual inspection system comprises a system main body (120), wherein the system main body (120) is fixedly installed through a visual inspection installation plate (810); the multi-station vision inspection system comprises a first detection assembly (820) for detecting foreign matters and broken edges, a second detection assembly (830) for detecting chip characters and a third detection assembly (840) for detecting broken edge scratches, wherein the first detection assembly (820) is vertically arranged at a vision inspection mounting plate (810) adjacently along the conveying direction of a flow channel.