CN117232587A

CN117232587A - Defect detection system for power battery insulating material

Info

Publication number: CN117232587A
Application number: CN202311525071.9A
Authority: CN
Inventors: 林焕城; 云辉; 吴余生; 王蛟龙; ***
Original assignee: Suzhou Deji Automation Technology Co ltd
Current assignee: Suzhou Deji Automation Technology Co ltd
Priority date: 2023-11-16
Filing date: 2023-11-16
Publication date: 2023-12-15
Anticipated expiration: 2043-11-16
Also published as: CN117232587B

Abstract

The application relates to a defect detection system for a power battery insulating material, which comprises a circular cutter die-cutting machine for compositely cutting foam, a thickness measuring and distance changing assembly line for measuring the thickness of foam, a defect detection assembly line for collecting foam image information, a sorting module for sorting foam and an outer box packaging module for packaging foam, wherein the circular cutter die-cutting machine is sequentially arranged; the circular knife die cutting machine, the thickness measuring and distance changing assembly line, the defect detection assembly line, the sorting module and the outer box packaging module are connected with a defect detection module for detecting defects of foam products; the defect detection module generates a defect detection scheme based on product demand information of foam, and controls a thickness measurement and distance change assembly line, a defect detection assembly line, a sorting module and an outer box packaging module to detect defects of foam cut by the circular knife die cutting machine and sort and package the foam. The application can greatly improve the detection efficiency and detection precision of foam, and save manpower and material resources.

Description

Defect detection system for power battery insulating material

Technical Field

The application relates to the field of defect detection, in particular to a defect detection system for a power battery insulating material.

Background

The power battery is a power source for providing power for tools, and is a storage battery for providing power for electric automobiles, electric trains, electric bicycles and golf carts. The power battery is a core component of a new energy automobile and is also an important direction of energy transformation in the future. There are many kinds of power battery components, in which the insulating material foam can provide excellent heat insulation, buffering, flame retardance, sealing, supporting, vibration reduction and the like functions in the power battery pack, so that the foam can be used in different area positions of the battery pack.

The prior power battery insulating material comprises an upper film, a foam body and a bottom film which are sequentially arranged from top to bottom. The upper film, the foam body and the bottom film are compounded by a circular knife die cutting machine, and then the foam finished product meeting the requirements is cut. Because the insulating material plays important roles of heat insulation, buffering, flame retardance, sealing, supporting, damping and the like in the power battery, the size appearance detection is not only needed when the foam is detected, but also the phenomena of whether holes, material shortage, multiple materials and inconsistent material density are needed to be detected and judged in the foam.

For the related art, the detection is mainly performed by manual observation and judgment, and the unified parameter setting is not performed, so that the efficiency is low and the uniformity is poor.

Disclosure of Invention

The application provides a defect detection system for a power battery insulating material, which aims to solve the problems that the existing detection of the power battery insulating foam is mainly carried out by manual observation and judgment, and unified parameter setting is not available, so that the efficiency is low and the uniformity is poor.

In a first aspect, the present application provides a defect detection system for a power battery insulating material, which adopts the following technical scheme:

a defect detection system for a power battery insulating material comprises a circular cutter die-cutting machine for compositely cutting foam, a thickness measuring and distance changing assembly line for measuring the thickness of the foam, a defect detection assembly line for collecting foam image information, a sorting module for sorting the foam and an outer box packaging module for packaging the foam, which are sequentially arranged; the circular knife die cutting machine, the thickness measuring and distance changing assembly line, the defect detection assembly line, the sorting module and the outer case packaging module are connected with the defect detection module together;

the thickness measurement and distance changing assembly line comprises a first vacuum assembly line for conveying foam and a distance changing mechanism which is arranged on the first vacuum assembly line in a crossing manner and used for measuring the thickness of the foam and adjusting the distance between the foam;

the defect detection assembly line comprises a second vacuum assembly line for conveying foam, and a linear array camera mechanism and two groups of area array camera mechanisms which are arranged on the second vacuum assembly line in a crossing manner along the conveying direction of the foam product; the two groups of area array camera mechanisms are respectively arranged at two ends of the second vacuum assembly line and are used for collecting images of two ends of the foam cotton when the foam cotton is positioned on the second vacuum assembly line; the linear array camera mechanism is positioned at one end of the second vacuum assembly line and is arranged between the first vacuum assembly line and the second vacuum assembly line and used for collecting a light transmission image of the foam;

The defect detection module generates a defect detection scheme based on product demand information of foam, and controls a thickness measurement and distance change assembly line, a defect detection assembly line, a sorting module and an outer box packaging module to detect defects of foam cut by the circular knife die cutting machine and sort and package the foam.

Preferably, the distance changing mechanism comprises a distance changing installation frame, a Z-axis linear module, a first vacuum generator, a distance changing module and a plurality of groups of suction mechanisms, wherein the Z-axis linear module, the first vacuum generator, the distance changing module and the plurality of groups of suction mechanisms are arranged on the distance changing installation frame; the distance-changing module is arranged on the sliding table of the Z-axis linear module and is arranged along the horizontal direction, the plurality of groups of suction mechanisms comprise suction upright posts and suction bottom plates, and the suction upright posts are fixedly connected with the sliding tables of the distance-changing module in a one-to-one correspondence manner; the bottom of the suction upright post is fixedly connected with the suction bottom plate, and the bottom of the suction upright post and the suction bottom plate are connected with a variable-pitch reinforcing rib together; a plurality of suction cups used for sucking foam are distributed on the suction bottom plate along the length direction of the suction bottom plate, a plurality of suction cups are connected with the first vacuum generator, and a plurality of thickness sensors used for measuring the thickness of the foam are arranged on the suction bottom plate.

Preferably, the two groups of area array camera mechanisms comprise an area array support, an area array camera and a light supplementing light source, and the area array support is fixedly arranged on the area array support; the linear array camera mechanism comprises a linear array support, a linear scanning camera and a light-transmitting light source, wherein the linear scanning camera is fixedly arranged on the linear array support, and the light-transmitting light source is fixed at one end, close to the first vacuum assembly line, of the second vacuum assembly line and is positioned below the foam in conveying; and in the process that the foam is conveyed from the first vacuum assembly line to the second vacuum assembly line, the light-transmitting light source transmits light to the foam passing through the upper part of the light-transmitting light source so that the foam is in a light-transmitting state, and the line scanning camera acquires images of the foam in the light-transmitting state to obtain a light-transmitting image of the foam.

Preferably, the sorting module comprises a scrapped product buffer position, a sorting assembly line, an inner box assembly line and a material supplementing jacking mechanism which are sequentially arranged, the sorting assembly line is communicated with a defect detection assembly line, and the defect detection module controls the defect detection assembly line to convey the foam to the sorting assembly line after detecting defects of the foam based on acquired images and light-transmitting images of two ends of the foam;

the scrapped product caching position comprises a plurality of scrapped product caching bins for caching the report waste products and a plurality of suspected product caching bins for caching the suspected products; the sorting assembly line is a vacuum assembly line; the material supplementing and jacking mechanism comprises a plurality of material supplementing bins for storing foam and material supplementing jacking cylinders arranged at the bottoms of the material supplementing bins and used for jacking foam in the material supplementing bins;

A sorting and carrying mechanism for sorting foam according to defect detection results is arranged above the scrapped product caching position, the sorting assembly line and the inner box assembly line; and a material supplementing and carrying mechanism for supplementing materials to the inner box assembly line according to the defect detection result is arranged above the inner box assembly line and the material supplementing and lifting mechanism.

Preferably, the inner box assembly line comprises a third vacuum assembly line and a plurality of groups of inner box receiving mechanisms, wherein the inner box receiving mechanisms comprise a blocking push box assembly and a plurality of inner box buffer bins for placing foam packaging inner boxes; the inner box assembly line is communicated with the outer box assembly module, and the outer box assembly module is positioned at the downstream of the inner box assembly line; the blocking box pushing assemblies are arranged at one end, close to the outer box packaging module, of the third vacuum assembly line;

the blocking pushing box assembly comprises a lifting blocking cylinder, a blocking boosting slide block and a boosting slide table cylinder, wherein the lifting blocking cylinder is arranged on a slide table of the boosting slide table cylinder along the vertical direction, the blocking boosting slide block is arranged at the lifting end of the lifting blocking cylinder, and a boosting inclined plane is arranged at one end of the blocking boosting slide block, which is close to the outer box packaging module;

An inner box buffer assembly line is arranged at one side of the upstream of the inner box assembly line, the inner box buffer assembly line comprises a fourth vacuum assembly line and a plurality of groups of inner box buffer mechanisms, each group of inner box buffer mechanisms comprises an inner box blocking component and a plurality of inner box temporary storage bins for storing foam packaging inner boxes, and each inner box blocking component is arranged at one end, close to the inner box assembly line, of the fourth vacuum assembly line; the inner box blocking assembly comprises an inner box blocking cylinder and an inner box blocking plate, and the inner box blocking plate is arranged on the telescopic end of the inner box blocking cylinder.

Preferably, the sorting and carrying mechanism comprises a sorting mounting plate, an X-axis sorting linear module arranged on the sorting mounting plate, a Z-axis sorting linear module arranged on a sliding table of the X-axis sorting linear module, a second vacuum generator and a plurality of groups of feeding and sucking components, wherein the second vacuum generator and the plurality of groups of feeding and sucking components are all arranged on the sliding table of the Z-axis sorting linear module, a distance adjusting sliding rail is arranged on the sliding table of the Z-axis sorting linear module, a plurality of groups of sucking components are arranged on the distance adjusting sliding rail in a sliding manner, and a plurality of groups of sucking components are connected with distance adjusting cylinders for adjusting the distance of the sucking components; the plurality of groups of suction assemblies comprise sorting substrates, a plurality of sorting bottom plates arranged at the bottoms of the sorting substrates and sorting suction nozzles uniformly distributed at the bottoms of the sorting bottom plates, and sorting reinforcing ribs are arranged between the sorting substrates and each sorting bottom plate; the multiple groups of the sorting suction nozzles of the suction assembly are connected with the second vacuum generator, each output end of the second vacuum generator corresponds to the sorting suction nozzles of each sorting bottom plate one by one, and the sorting suction nozzles of the same sorting bottom plate are connected with a single output end of the second vacuum generator together.

Preferably, the feeding and carrying mechanism comprises a feeding mounting plate, an X-axis feeding linear module arranged on the feeding mounting plate, a Z-axis feeding linear module arranged on a sliding table of the X-axis feeding linear module, a third vacuum generator and a feeding and absorbing assembly, wherein the third vacuum generator and the feeding and absorbing assembly are both arranged on the sliding table of the Z-axis feeding linear module; the suction assembly comprises a feeding substrate, a plurality of feeding bottom plates arranged at the bottom of the feeding substrate and feeding suction nozzles uniformly distributed at the bottom of the feeding bottom plates, and feeding reinforcing ribs are arranged between the feeding substrate and each feeding bottom plate; the feeding suction nozzles on the feeding bottom plates are connected with the third vacuum generator, the output ends of the third vacuum generator are in one-to-one correspondence with the feeding suction nozzles of the feeding bottom plates, and the feeding suction nozzles of the same feeding bottom plate are connected with the single output end of the third vacuum generator.

Preferably, the outer box packaging module comprises an outer box packaging rack and two outer box buffer production lines which are arranged on the outer box packaging rack in parallel; a plurality of groups of jacking clamping mechanisms for storing the foam packaging outer boxes are arranged between the two outer box buffering production lines, each jacking clamping mechanism comprises two groups of clamping assemblies arranged along the material conveying direction, and each clamping assembly comprises a clamping clamp for accommodating the foam packaging outer box and a jacking cylinder for driving the clamping clamp to lift;

The outer case packaging machine frame is provided with a plurality of groups of size adjusting components at one end far away from an inner case assembly line, and each size adjusting component comprises a size adjusting cylinder and an adjusting plate arranged at the telescopic end of the corresponding size adjusting cylinder; when the outer box is packed, the size adjusting cylinder is controlled according to the size of the foam packaging outer box to drive the adjusting plate to move for a specified distance, the foam packaging outer box is placed in two clamping clamps of the jacking clamping mechanism, the inner box assembly line conveys a plurality of groups of fully loaded foam packaging inner boxes into the foam packaging outer box, the jacking cylinder drives the clamping clamps to descend, and the two outer box buffering assembly line conveys the fully loaded foam packaging outer boxes to a buffering area preset by an outer box packing machine frame.

Preferably, the defect detection module generates a defect detection scheme based on product demand information of foam, and controls a thickness measurement and distance change assembly line, a defect detection assembly line, a sorting module and an outer box packaging module to detect defects of the foam cut by the circular cutter die cutting machine based on the defect detection scheme, and the sorting and packaging specifically comprises the following steps:

acquiring product demand information of foam, wherein the product demand information of the foam comprises foam size specification information, foam material information, foam detection standard information and foam packaging specification information;

Generating a defect detection scheme of foam through matching a preset scheme matching model based on product demand information of foam, wherein the scheme matching model is obtained by training a machine learning model through historical data, and the defect detection scheme comprises production detection control parameter information, foam composite cutting flow information, foam standard sample data, foam detection flow information and foam sorting packaging flow information;

the defect detection module is used for lowering detection control parameter information to a circular knife die cutting machine, a thickness measuring and distance changing assembly line, a defect detection assembly line, a sorting module and an outer case packaging module for parameter setting according to a defect detection scheme;

according to the product demand information and the defect detection scheme, a raw material scheduling instruction is sent to a worker, the worker conveys production to a circular cutter die-cutting machine according to the raw material scheduling instruction, the defect detection module generates a composite cutting instruction according to foam composite cutting flow information, and the composite cutting instruction is sent to the circular cutter die-cutting machine to control the circular cutter die-cutting machine to perform composite cutting on production raw materials according to the foam composite cutting flow so as to obtain foam meeting the product demand;

the defect detection module generates a detection control instruction according to the foam detection flow information, sends the detection control instruction to the thickness measuring and distance changing assembly line and the defect detection assembly line, detects defects of foam conveyed by the circular cutter die cutting machine according to the foam detection flow, and outputs a foam detection result;

The defect detection module generates sorting and packaging control instructions according to the foam sorting and packaging flow information, and sends the sorting and packaging control instructions to the sorting module and the outer box packaging module, so that the sorting and packaging control instructions sort, supplement and package the detected foam according to the foam sorting and packaging flow according to the foam detection result.

Preferably, the defect detection module detects defects of the foam conveyed by the circular knife die-cutting machine according to a foam detection flow, and specifically comprises the following steps:

thickness measurement: controlling a first vacuum assembly line to absorb and convey foam conveyed by a circular knife die cutting machine by a specified distance based on a detection control instruction, controlling a Z-axis linear module of a distance-changing mechanism to drive a plurality of groups of suction mechanisms to press down corresponding strokes, and measuring the thickness of foam clinging to the first vacuum assembly line through a thickness sensor on the suction mechanisms;

foam pitch change: after the thickness measurement is completed, controlling a first vacuum generator to start sucking foam through a sucking disc on a sucking bottom plate based on a detection control instruction, and then placing the foam on a first vacuum assembly line after adjusting the intervals of a plurality of groups of sucking mechanisms through a variable-pitch module according to the detection control instruction;

and (3) image acquisition: the first vacuum assembly line conveys the foam after the distance change to the second vacuum assembly line, the brightness of the light transmission light source is regulated according to the detection control instruction, the foam passing above the first vacuum assembly line is subjected to light transmission irradiation to enable the foam to be in a light transmission state, and the line scanning camera is used for acquiring images of the foam in the light transmission state to obtain a light transmission image of the foam; the second vacuum assembly line adsorbs and conveys the foam cotton for a specified distance, and two groups of area array camera mechanisms positioned at the two ends of the second vacuum assembly line start image acquisition on the two ends of the foam cotton on the second vacuum assembly line to obtain images of the two ends of the foam cotton;

Defect detection: and performing defect detection on the basis of thickness measurement data, images at two ends of foam and a light transmission image through a preset AI defect detection model, wherein the AI defect detection model is obtained by performing deep learning iterative training on foam standard sample data through a machine learning model, and the foam standard sample data comprises foam standard sample data in a normal state and foam standard sample data in a light transmission state.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of a thickness measurement and displacement assembly line, a defect detection assembly line and a defect detection module, a defect detection scheme is generated according to product demand information of foam, a circular knife die cutting machine is controlled to compound foam raw materials, upper film raw materials and bottom film raw materials and cut foam meeting demands, the thickness of the foam cut by the circular knife die cutting machine is measured through the thickness measurement and displacement assembly line, the space between the foam subjected to thickness measurement is adjusted based on subsequent packaging demands, then the two-end images of the foam are collected through a surface array camera mechanism on the thickness measurement and displacement assembly line and combined with thickness measurement data to realize the detection of vinegar of the foam, finally the linear array camera mechanism is used for carrying out light-transmitting irradiation on the foam in a light-transmitting state, further the light-transmitting images of the foam are collected, the light-transmitting images are identified and detected through a preset AI defect detection model according to the defect detection scheme, so that the surface and internal defects of the foam can be synchronously detected, various problems such as raw material grains, uneven density, nodules and the like in the foam can be conveniently and accurately found, the application scene of the foam can be greatly detected, the foam can be used for detecting the foam, the defects are greatly, and the manpower and the material precision can be greatly improved;

2. Through the arrangement of the distance changing module and the suction mechanism, the distance between the foam on the first vacuum assembly line can be adjusted, a foundation is laid for the defect detection, sorting and packing of the follow-up foam, and the foam detection efficiency is improved;

3. the method comprises the steps of sequentially carrying out thickness detection and image acquisition on foam cut by a circular cutter die cutting machine through a thickness measurement and distance change assembly line and a defect detection assembly line based on detection control instructions, enabling the foam to be kept in a flat conveying state and acquiring images at two ends of the foam under the assistance of a first vacuum assembly line and a second vacuum assembly line, facilitating accurate size detection on the foam, enabling the foam to be in a light transmission state according to the self characteristics of the foam by adopting a bottom polishing method, acquiring the light transmission image of the foam, and finally carrying out deep learning training on foam standard sample data in a normal state of the foam and foam standard sample data in the light transmission state through an AI defect detection model, so that the AI defect detection model can identify and detect surface defects and internal defects of the foam according to the light transmission image of the foam, and the effect of effectively improving foam detection precision and detection efficiency is achieved.

Drawings

FIG. 1 is a schematic diagram of an overall structure of a defect detection system for a power cell insulation material according to an embodiment of the present application;

FIG. 2 is a system block diagram of a defect detection system for a power cell insulation material in accordance with an embodiment of the present application;

FIG. 3 is a schematic diagram of a thickness measurement and gauge assembly line in an embodiment of the application;

FIG. 4 is a schematic diagram of a pitch mechanism according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a defect detection pipeline in accordance with an embodiment of the present application;

FIG. 6 is a schematic diagram of a linear camera mechanism and an area camera mechanism in a defect detection pipeline according to an embodiment of the present application;

FIG. 7 is a schematic diagram of another angle configuration of a defect detection pipeline according to an embodiment of the present application;

fig. 8 is a schematic top view of a sorting module and an outer box packaging module according to an embodiment of the present application;

fig. 9 is a schematic structural view of a sorting module according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a buffer status of a report waste in an embodiment of the application;

FIG. 11 is a schematic structural diagram of a feeding jacking mechanism according to an embodiment of the present application;

FIG. 12 is a schematic view of the inner box assembly line in accordance with an embodiment of the present application;

FIG. 13 is a schematic view of a sort handling mechanism in accordance with an embodiment of the present application;

FIG. 14 is a schematic view of a feed handling mechanism according to an embodiment of the present application;

FIG. 15 is a schematic diagram of a cache pipeline of an inner box according to an embodiment of the present application;

FIG. 16 is a schematic view of the structure of the outer case packaging module according to the embodiment of the present application;

FIG. 17 is a flowchart of a method for detecting defects in foam in accordance with an embodiment of the present application;

fig. 18 is a flowchart of a method for performing defect detection by the defect detection module according to the foam detection process in the embodiment of the present application.

Reference numerals illustrate: 1. a circular knife die cutting machine; 2. a thickness measuring and distance changing assembly line; 21. a first vacuum line; 22. a pitch-changing mechanism; 221. a variable-pitch mounting rack; 222. a Z-axis straight line module; 223. a first vacuum generator; 224. a variable-pitch module; 225. a suction mechanism; 226. sucking the upright post; 227. sucking a bottom plate; 228. a variable-pitch reinforcing rib; 229. a suction cup; 230. a thickness sensor; 3. a defect detection pipeline; 31. a second vacuum line; 32. a linear array camera mechanism; 321. a linear array bracket; 322. a line scan camera; 323. a light-transmitting light source; 33. an area array camera mechanism; 331. an area array bracket; 332. an area array camera; 333. a light supplementing light source; 4. a sorting module; 41. the waste product reporting buffer storage position; 411. a scrapped product buffering bin; 412. a suspected article buffer bin; 42. sorting assembly lines; 43. inner box assembly line; 431. a third vacuum line; 432. an inner box receiving mechanism; 433. a blocking push box assembly; 434. an inner box buffer bin; 435. lifting blocking air cylinder; 436. blocking the boosting slide block; 437. boosting a sliding table cylinder; 44. a material supplementing and lifting mechanism; 441. supplementing bin; 442. a material supplementing jacking cylinder; 45. an inner box cache pipeline; 451. a fourth vacuum line; 452. an inner box buffer mechanism; 453. an inner box blocking assembly; 454. the inner box temporarily stores the bin; 455. the inner box blocks the air cylinder; 456. an inner box blocking plate; 5. an outer box packaging module; 51. an outer box packaging frame; 52. an outer box cache pipeline; 53. jacking and clamping mechanisms; 54. a clamping assembly; 541. a clamping clip; 542. jacking up the air cylinder; 55. a size adjustment assembly; 551. a size-adjusting cylinder; 552. an adjusting plate; 6. a defect detection module; 7. sorting and carrying mechanisms; 71. sorting the mounting plates; 72. an X-axis sorting straight line module; 73. a Z-axis sorting straight line module; 74. a second vacuum generator; 75. sorting and sucking components; 751. sorting the substrates; 752. sorting the bottom plate; 753. sorting suction nozzles; 754. sorting the reinforcing ribs; 76. a distance-adjusting slide rail; 77. a distance-adjusting cylinder; 8. a material supplementing and carrying mechanism; 81. a material supplementing mounting plate; 82. an X-axis feeding linear module; 83. a Z-axis feeding linear module; 84. a third vacuum generator; 85. a feed supplement and suction assembly; 851. a material supplementing substrate; 852. a material supplementing bottom plate; 853. a material supplementing suction nozzle; 854. and (5) supplementing reinforcing ribs.

Detailed Description

There are many kinds of power battery components, in which the insulating material foam can provide excellent heat insulation, buffering, flame retardance, sealing, supporting, vibration reduction and the like functions in the power battery pack, so that the foam can be used in different area positions of the battery pack. Because the insulating material plays important roles of heat insulation, buffering, flame retardance, sealing, supporting, damping and the like in the power battery, the size appearance detection is not only needed when the foam is detected, but also the phenomena of whether holes, material shortage, multiple materials and inconsistent material density are needed to be detected and judged in the foam.

The embodiment of the application discloses a defect detection system for a power battery insulating material. Referring to fig. 1-5, a defect detection system for a power battery insulating material comprises a circular cutter die-cutting machine 1 for compositely cutting foam, a thickness measuring and pitch changing assembly line 2 for measuring the thickness of foam, a defect detection assembly line 3 for collecting foam image information, a sorting module 4 for sorting foam and an outer box packaging module 5 for packaging foam, which are sequentially arranged. The circular knife die cutting machine 1, the thickness measuring and distance changing assembly line 2, the defect detection assembly line 3, the sorting module 4 and the outer box packaging module 5 are connected with the defect detection module 6. The circular knife die cutting machine 1 is an existing device, and specific structures are not described herein. The thickness measuring and pitch changing assembly line 2 comprises a first vacuum assembly line 21 for conveying foam and a pitch changing mechanism 22 which is arranged on the first vacuum assembly line 21 in a straddling mode and used for measuring the thickness of the foam and adjusting the pitch of the foam. The defect detection assembly line 3 comprises a second vacuum assembly line 31 for conveying foam, and a linear array camera mechanism 32 and two groups of area array camera mechanisms 33 which are arranged on the second vacuum assembly line 31 in a crossing manner along the conveying direction of the foam product. The two groups of area array camera mechanisms 33 are respectively arranged at two ends of the second vacuum assembly line 31 and are used for collecting images of two ends of the foam cotton when the foam cotton is positioned on the second vacuum assembly line 31. The linear camera mechanism 32 is located at one end of the second vacuum assembly line and is disposed between the first vacuum assembly line 21 and the second vacuum assembly line 31, and is used for collecting the light transmission image of the foam. The defect detection module 6 generates a defect detection scheme based on product demand information of foam, and controls the thickness measurement and distance change assembly line 2, the defect detection assembly line 3, the sorting module 4 and the outer box packaging module 5 to detect defects of the foam cut by the circular cutter die cutting machine 1 and sort and package the foam. Through the setting of thickness measurement displacement assembly line 2, defect detection assembly line 3 and defect detection module 6, product demand information according to the bubble cotton generates defect detection scheme, control circle sword cross cutting machine 1 carries out the complex to bubble cotton raw materials, go up membrane raw materials and carrier film raw materials and cuts out the bubble cotton that satisfies the demand, carry out thickness measurement to the bubble cotton that circle sword cross cutting machine 1 cut out through thickness measurement displacement assembly line 2, and carry out the interval adjustment to the bubble cotton of accomplishing thickness measurement based on the follow-up packing demand, the area array camera mechanism 33 on the thickness measurement displacement assembly line 2 gathers the both ends image of bubble cotton and combines thickness measurement data to realize detecting the eat vinegar of bubble cotton, finally carry out the printing opacity irradiation to it through line array camera mechanism 32 in the bubble cotton transportation process and make the bubble cotton be in the printing opacity state, and then gather the printing opacity image of bubble cotton, and carry out the discernment detection to the printing opacity image according to the AI defect detection model of defect detection scheme through the setting up in advance, so as to realize carrying out synchronous detection to bubble cotton surface and inside defect, the high-efficient accurate discovery bubble cotton can be had raw materials, the density is uneven, various nodes, can detect the problem of the bubble cotton is detected to the full-scale, can be directed at the foam on the big-level and the material position, and the manpower is detected on the product is greatly.

Referring to fig. 2-4, the pitch mechanism 22 includes a pitch mounting bracket 221 and a Z-axis linear module 222, a first vacuum generator 223, a pitch module 224, and a plurality of sets of suction mechanisms 225 mounted on the pitch mounting bracket 221. The distance-changing module 224 is disposed on the sliding table of the Z-axis linear module 222 and along the horizontal direction, and the plurality of groups of sucking mechanisms 225 each comprise a sucking upright post 226 and a sucking bottom plate 227, where the plurality of sucking upright posts 226 are fixedly connected with the plurality of sliding tables of the distance-changing module 224 in a one-to-one correspondence manner. The bottom of the suction upright post 226 is fixedly connected with the suction bottom plate, and the bottom of the suction upright post 226 and the suction bottom plate are commonly connected with a variable-pitch reinforcing rib 228. All be provided with a plurality of sucking discs 229 that are used for absorbing the bubble cotton along its length direction distributing type on a plurality of suction bottom plates, a plurality of sucking discs 229 all are connected with first vacuum generator 223, and all are provided with the thickness sensor 230 that is used for measuring the cotton thickness of bubble on a plurality of suction bottom plates. The circular knife die cutting machine 1 conveys cut foam to a first vacuum assembly line, the first vacuum assembly line 21 adsorbs the foam, the foam is conveyed on the first vacuum assembly line 21 in a tight and flat state, based on the instruction of the defect detection module 6, the Z-axis linear module 222 of the control distance-changing mechanism 22 drives the plurality of groups of suction mechanisms 225 to press down for corresponding strokes, the thickness sensor 230 on the suction mechanisms 225 is used for measuring the thickness of the foam clinging to the first vacuum assembly line 21, after the thickness measurement is completed, the first vacuum generator 223 is controlled to start sucking the foam through the sucking disc 229 on the sucking bottom plate based on the detection control instruction, and then the foam is placed on the first vacuum assembly line 21 after the distance between the plurality of groups of suction mechanisms 225 is adjusted through the distance-changing module 224 according to the detection control instruction. Through the arrangement of the first vacuum assembly line 21, the foam can be adsorbed and conveyed, so that the foam is kept in a straight state, and the distance-changing mechanism 22 can accurately measure the thickness data of the foam; through the setting of displacement module 224 and suction means 225, can adjust the interval between each bubble cotton on the first vacuum assembly line 21, lay the basis for follow-up bubble cotton defect detection, letter sorting and packing, help improving bubble cotton detection efficiency.

Referring to fig. 5-7, the two sets of area camera mechanisms 33 each include an area bracket 331, an area camera 332, and a light supplementing light source 333, the area camera 332 is fixedly disposed on the area bracket 331, and the light supplementing light source 333 is located below the area camera 332. The linear array camera mechanism 32 comprises a linear array support 321, a linear scanning camera 322 and a light-transmitting light source 323, wherein the linear scanning camera 322 is fixedly arranged on the linear array support 321, and the light-transmitting light source 323 is fixed at one end of the second vacuum assembly line 31, which is close to the first vacuum assembly line 21, and is positioned below the foam in conveying. In the process that the foam is conveyed from the first vacuum assembly line 21 to the second vacuum assembly line 31, the light-transmitting light source 323 transmits light to the foam passing through the upper portion of the light-transmitting light source so that the foam is in a light-transmitting state, and the line scanning camera 322 acquires images of the foam in the light-transmitting state to obtain a light-transmitting image of the foam. Acquiring two end images of the foam on the second vacuum assembly line 31 through two groups of area array camera mechanisms 33, and accurately and efficiently detecting the size of the foam based on the two end images and thickness measurement data; the line scanning camera 322 is used for acquiring an image of the foam in a light transmission state to obtain a light transmission image of the foam, and the light transmission image is identified and detected through the preset AI defect detection model according to the defect detection scheme, so that synchronous detection of the surface and the internal defects of the foam is realized, various problems such as empty grains, material shortage, multiple materials, uneven density, knots and the like of the raw materials possibly existing in the foam can be found efficiently and accurately, the omnibearing defect detection can be carried out on the foam according to the product application scene of the foam, the foam detection efficiency and detection precision are greatly improved, and manpower and material resources are saved.

Referring to fig. 8 to 11, the sorting module 4 includes a reject buffer 41, a sorting line 42, an inner box line 43, and a feed supplement jacking mechanism 44, which are sequentially disposed. The sorting assembly line 42 is communicated with the defect detection assembly line 3, and the defect detection module 6 controls the defect detection assembly line 3 to convey the foam to the sorting assembly line 42 after detecting the defect of the foam based on the acquired images of the two ends of the foam and the light transmission image. The report waste buffer position 41 comprises a plurality of discard buffer bins 411 for buffering report waste and a plurality of suspected material buffer bins 412 for buffering suspected material. Sorting line 42 is a vacuum line. The feeding jacking mechanism 44 includes a plurality of feeding bins 441 for storing foam and feeding jacking cylinders 442 disposed at the bottoms of the feeding bins 441 for jacking foam in the feeding bins 441. The scrapped product buffer storage position 41, the sorting assembly line 42 and the inner box assembly line 43 are jointly arranged above the scrapped product buffer storage position, the sorting assembly line 42 and the inner box assembly line 43, and the sorting and carrying mechanism 7 is used for sorting foam according to defect detection results. The upper parts of the inner box assembly line 43 and the material supplementing and lifting mechanism 44 are jointly provided with a material supplementing and conveying mechanism 8 for supplementing materials to the inner box assembly line 43 according to the defect detection result.

Referring to fig. 8 and 12, the inner box assembly line 43 includes a third vacuum assembly line 431 and a plurality of sets of inner box receiving mechanisms 432, each set of inner box receiving mechanisms 432 including a blocking push box assembly 433 and a plurality of inner box buffer bins 434 for holding foam packaging inner boxes. The inner box assembly line 43 communicates with the outer box packaging module 5, and the outer box packaging module 5 is located downstream of the inner box assembly line 43. The plurality of blocking push box assemblies 433 are all disposed at one end of the third vacuum line 431 near the outer box packaging module 5. Through the setting of letter sorting module 4, can sort the bubble cotton based on bubble cotton detection result, place the interior case buffer memory storehouse 434 on interior case assembly line 43 with the qualification, place the reject of reporting and the suspicious article that the detection has the doubtful needs further to be considered in reject buffer memory storehouse 411 and suspicious article buffer memory storehouse 412 of reporting reject buffer memory position 41, when sorting out suspicious article and scraped article, fill the empty space of scraped article suspicious article through snatching the bubble cotton in the moisturizing storehouse 441 to interior case buffer memory storehouse 434, ensure that multiunit interior case receiving mechanism 432 is synchronous skilled, help improving bubble cotton letter sorting packing efficiency.

Referring to fig. 8 and 12, the blocking push box assembly 433 includes a lift blocking cylinder 435, a blocking boost slider 436, and a boost slide cylinder 437. The lifting blocking air cylinder 435 is arranged on a sliding table of the boosting sliding table air cylinder 437 along the vertical direction, the blocking boosting sliding block 436 is arranged at the lifting end of the lifting blocking air cylinder 435, and a boosting inclined plane is arranged at one end, close to the outer box packaging module 5, of the blocking boosting sliding block 436. Through the setting of blocking pushing box subassembly 433, the lift blocks cylinder 435 under the normality will block boosting slider 436 jack-up, block spacing to the multiunit bubble cotton package inner box on the third vacuum assembly line 431 in the inner box assembly line 43, lift blocks cylinder 435 and descends and block boosting slider 436 after bubble cotton package inner box is fully loaded, third vacuum assembly line 431 carries multiunit bubble cotton package inner box to outer case package module 5 department, simultaneously after bubble cotton package inner box breaks away from third vacuum assembly line 431 completely, lift blocks cylinder 435 and lifts and block boosting slider 436, boosting slip table cylinder 437 drives and blocks boosting slider 436 and slide, supplementary promotion bubble cotton package inner box gets into the bubble cotton package outer box of outer case package module 5 department, make bubble cotton automatic package flow more intelligent smoothness, the phenomenon emergence that the package inner box carried out of place appears is avoided.

Referring to fig. 13, the sorting and carrying mechanism 7 includes a sorting mounting plate 71, an X-axis sorting straight line module 72 mounted on the sorting mounting plate 71, a Z-axis sorting straight line module 73 mounted on a slide table of the X-axis sorting straight line module 72, a second vacuum generator 74, and a plurality of sets of feed suction components 85. The second vacuum generator 74 and the multiple groups of feeding and sucking components 85 are all installed on the sliding table of the Z-axis sorting straight-line module 73, the distance adjusting sliding rail 76 is arranged on the sliding table of the Z-axis sorting straight-line module 73, the multiple groups of sucking components are arranged on the distance adjusting sliding rail 76 in a sliding mode, and the multiple groups of sucking components are connected with the distance adjusting air cylinder 77 for adjusting the distance between the multiple groups of sucking components. The multiunit absorbs the subassembly and all includes letter sorting base plate 751, installs a plurality of letter sorting bottom plates 752 and evenly distributed that letter sorting base plate 752 bottom set up letter sorting suction nozzle 753, all is provided with letter sorting strengthening rib 754 between letter sorting base plate 751 and each letter sorting bottom plate 752 at letter sorting bottom plate 752 bottom. The sorting nozzles 753 of the plurality of groups of suction components are connected with the second vacuum generator 74, and each output end of the second vacuum generator 74 corresponds to the sorting nozzle 753 of each sorting bottom plate 752 one by one, and the sorting nozzles 753 of the same sorting bottom plate 752 are connected with a single output end of the second vacuum generator 74 together. The foam on the sorting assembly line 42 can be rapidly sorted according to the foam detection result through the sorting and carrying mechanism 7.

Referring to fig. 14, the feed carrying mechanism 8 includes a feed mounting plate 81, an X-axis feed linear module 82 mounted on the feed mounting plate 81, a Z-axis feed linear module 83 mounted on a slide table of the X-axis feed linear module 82, a third vacuum generator 84, and a feed suction assembly 85. The third vacuum generator 84 and the feed suction assembly 85 are both mounted on the slide of the Z-axis feed linear module 83. The suction assembly comprises a feeding substrate 851, a plurality of feeding bottom plates 852 arranged at the bottom of the feeding substrate 851, and feeding suction nozzles 853 uniformly distributed at the bottom of the feeding bottom plates 852, wherein feeding reinforcing ribs 854 are arranged between the feeding substrate 851 and each feeding bottom plate 852. The feeding nozzles 853 on the plurality of feeding base plates 852 are connected to the third vacuum generator 84, and each output end of the third vacuum generator 84 corresponds to a feeding nozzle 853 of each feeding base plate 852 one by one, and the feeding nozzles 853 of the same feeding base plate 852 are commonly connected to a single output end of the third vacuum generator 84. Through the setting of feed supplement transport mechanism 8, cooperation feed supplement climbing mechanism 44 carries out the feed supplement to the vacancy that appears because of report waste product and suspected article in the foam packing inner box, ensures that multiunit inner box receiving mechanism 432 is synchronous skillful, helps improving foam letter sorting packing efficiency.

Referring to fig. 8 and 15, an inner box buffer assembly line 45 is disposed on an upstream side of the inner box assembly line 43, the inner box buffer assembly line 45 includes a fourth vacuum assembly line 451 and a plurality of sets of inner box buffer mechanisms 452, each set of inner box buffer mechanisms 452 includes an inner box blocking assembly 453 and a plurality of inner box temporary storage bins 454 for storing inner boxes of foam packages, and each of the plurality of inner box blocking assemblies 453 is mounted at one end of the fourth vacuum assembly line 451 near the inner box assembly line 43; the inner tank blocking assembly 453 includes an inner tank blocking cylinder 455 and an inner tank blocking plate 456, and the inner tank blocking plate 456 is installed on a telescopic end of the inner tank blocking cylinder 455. Through the setting of inner box buffering assembly line 45, can buffer memory multiunit bubble cotton package inner box in advance, when the multiunit bubble cotton package inner box on inner box assembly line 43 satisfies and carries to outer box packaging module 5, inner box buffering assembly line 45 can in time the efficient with the empty bubble cotton package inner box of buffering in advance carry to inner box assembly line 43 on, ensure that bubble cotton letter sorting packing work lasts the high efficiency and goes on, helps improving bubble cotton letter sorting packing efficiency.

Referring to fig. 16, the outer case packaging module 5 includes an outer case packaging frame 51 and two outer case buffer pipelines 52 arranged in parallel on the outer case packaging frame 51; a plurality of jacking clamping mechanisms 53 for storing the foam packaging outer boxes are arranged between the two outer box buffering production lines 52, each jacking clamping mechanism 53 comprises two groups of clamping assemblies 54 arranged along the material conveying direction, and each clamping assembly 54 comprises a clamping clamp 541 for accommodating the foam packaging outer box and a jacking cylinder 542 for driving the clamping clamp 541 to lift.

Referring to fig. 16, the outer box packing frame 51 is provided at an end remote from the inner box assembly line 43 with a plurality of sets of size adjusting assemblies 55, and the size adjusting assemblies 55 include size adjusting cylinders 551 and adjusting plates 552 installed at telescopic ends of the size adjusting cylinders 551. When the outer case is packaged, the size adjusting cylinder 551 is controlled according to the size of the foam packaging outer case to drive the adjusting plate 552 to move for a specified distance. The foam packaging outer boxes are placed in two clamping clamps 541 of the jacking clamping mechanism 53, the inner box assembly line 43 conveys a plurality of groups of fully loaded foam packaging inner boxes into the foam packaging outer boxes, the jacking cylinder 542 drives the clamping clamps 541 to descend, and the two outer box buffering assembly lines 52 convey the fully loaded foam packaging outer boxes to a buffering area preset by the outer box packaging rack 51. Through the setting of size adjustment subassembly 55, can improve equipment suitability for equipment satisfies the cotton packing demand of equidimension bubble, cooperates interior case assembly line 43 and stops pushing away case subassembly 433, realizes that the cotton interior case of qualified bubble, outer case packaging is automatic high-efficient going on, reaches the effect of effectively improving the cotton packing efficiency of bubble.

Referring to fig. 17, the defect detection module 6 generates a defect detection scheme based on product demand information of foam, and controls the thickness measurement and distance change assembly line 2, the defect detection assembly line 3, the sorting module 4 and the outer box packaging module 5 to detect defects of the foam cut by the circular knife die-cutting machine 1 and sort and package the foam based on the defect detection scheme, and specifically comprises the following steps:

A1, acquiring product demand information of foam, wherein the product demand information of the foam comprises foam size specification information, foam material information, foam detection standard information and foam packaging specification information;

a2, generating a defect detection scheme of foam: generating a defect detection scheme of foam through matching a preset scheme matching model based on product demand information of foam, wherein the scheme matching model is obtained through training historical data of a machine learning model, and the defect detection scheme comprises production detection control parameter information, foam composite cutting flow information, foam standard sample data, foam detection flow information and foam sorting and packaging flow information;

it should be noted that the foam detection flow information includes brightness parameter information of the light-transmitting light source 323, and the brightness parameter information is generated by the scheme matching model based on thickness, material and color matching of the foam;

a3, parameter setting: the defect detection module 6 lowers detection control parameter information to the positions of the circular knife die cutting machine 1, the thickness measuring and distance changing assembly line 2, the defect detection assembly line 3, the sorting module 4 and the outer box packaging module 5 according to a defect detection scheme for parameter setting;

a4, cutting to obtain foam meeting the product requirement: according to the product demand information and the defect detection scheme, a raw material scheduling instruction is sent to a worker, the worker conveys production to the round cutter die-cutting machine 1 according to the raw material scheduling instruction, the defect detection module 6 generates a composite cutting instruction according to the foam composite cutting flow information, the composite cutting instruction is sent to the round cutter die-cutting machine 1 to control the round cutter die-cutting machine to perform composite cutting on production raw materials according to the foam composite cutting flow, and foam meeting the product demand is obtained;

A5, detecting defects of the foam: the defect detection module 6 generates a detection control instruction according to the foam detection flow information, sends the detection control instruction to the thickness measuring and distance changing assembly line 2 and the defect detection assembly line 3, detects defects of foam conveyed by the circular cutter die cutting machine 1 according to the foam detection flow, and outputs a foam detection result;

a6, sorting and packaging foam: the defect detection module 6 generates sorting and packaging control instructions according to the foam sorting and packaging flow information, and sends the sorting and packaging control instructions to the sorting module 4 and the outer box packaging module 5, so that the sorting and packaging control instructions sort and supplement the detected foam according to the foam sorting and packaging flow according to the foam detection result. The defect detection scheme is generated based on product demand information matching of foam through the preset scheme matching model, size detection and defect detection are carried out on foam based on foam detection standard information, detection flow and detection steps are set aiming at the actual application scene of foam, comprehensiveness, precision and efficiency of foam detection are effectively improved, parameter configuration is carried out on each device of a defect detection system based on the defect detection scheme, manpower is saved, interference of staff on the detection flow is reduced, detection faults caused by depending on experience are avoided, and the effect of effectively improving foam detection precision and detection efficiency is achieved.

Referring to fig. 18, the defect detection module 6 detects defects of the foam delivered by the circular knife die-cutting machine 1 according to a foam detection flow, specifically includes the following steps:

b1, thickness measurement: based on the detection control instruction, the first vacuum assembly line 21 is controlled to adsorb and convey the foam cotton conveyed by the circular knife die-cutting machine 1 for a specified distance, the Z-axis linear module 222 of the distance-changing mechanism 22 is controlled to drive the plurality of groups of suction mechanisms 225 to press down for corresponding strokes, and the thickness of the foam cotton tightly attached to the first vacuum assembly line 21 is measured through the thickness sensor 230 on the suction mechanisms 225;

b2, foam pitch change: after the thickness measurement is completed, the first vacuum generator 223 is controlled to start sucking foam through the sucking disc 229 on the sucking bottom plate based on the detection control instruction, and then the foam is placed on the first vacuum assembly line 21 after the spacing between the plurality of groups of sucking mechanisms 225 is adjusted through the variable-pitch module 224 according to the detection control instruction;

b3, image acquisition: the first vacuum assembly line 21 conveys the foam after the distance change to the second vacuum assembly line 31, adjusts the brightness of the light transmission light source 323 according to the detection control instruction, and transmits light to the foam passing above the light transmission light source 323 to enable the foam to be in a light transmission state, and the line scanning camera 322 acquires images of the foam in the light transmission state to obtain a light transmission image of the foam; the second vacuum assembly line 31 adsorbs and conveys the foam cotton for a specified distance, and two groups of area array camera mechanisms 33 positioned at the two ends of the second vacuum assembly line 31 start image acquisition on the two ends of the foam cotton on the second vacuum assembly line 31 to obtain images of the two ends of the foam cotton;

B4, defect detection: and performing defect detection on the basis of thickness measurement data, images at two ends of foam and a light transmission image through a preset AI defect detection model, wherein the AI defect detection model is obtained by performing deep learning iterative training on foam standard sample data for a machine learning model, and the foam standard sample data comprises foam standard sample data in a normal state and foam standard sample data in a light transmission state. The thickness detection and image acquisition are sequentially carried out on the foam cut by the circular cutter die-cutting machine 1 through the thickness measurement and distance change assembly line 2 and the defect detection assembly line 3 based on detection control instructions, the foam is kept in a flat conveying state and images at two ends of the foam are collected under the assistance of the first vacuum assembly line 21 and the second vacuum assembly line 31, accurate size detection is conveniently carried out on the foam, the foam is in a light transmission state and the light transmission image of the foam is collected by adopting a bottom polishing method according to the characteristics of the foam, finally, the AI defect detection model is used for carrying out deep learning training on foam standard sample data in a normal state of the foam and foam standard sample data in the light transmission state, and the AI defect detection model can be used for identifying and detecting the surface defects (scratches, dirt and breakage) and internal defects (holes, hollow grains, cotton nodules, unfilled materials and multiple materials) of the foam according to the light transmission image of the foam, so that the effect of effectively improving the foam detection precision and detection efficiency is achieved.

The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present invention or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, which also falls within the scope of the present invention.

Claims

1. A defect detection system for a power cell insulation material, characterized by: the device comprises a circular knife die-cutting machine (1) for compositely cutting foam, a thickness measuring and distance changing assembly line (2) for measuring the thickness of the foam, a defect detection assembly line (3) for collecting foam image information, a sorting module (4) for sorting the foam and an outer box packaging module (5) for packaging the foam, which are sequentially arranged; the circular knife die cutting machine (1), the thickness measuring and distance changing assembly line (2), the defect detection assembly line (3), the sorting module (4) and the outer box packaging module (5) are connected with the defect detection module (6) together;

The thickness measurement and pitch change assembly line (2) comprises a first vacuum assembly line (21) for conveying foam and a pitch change mechanism (22) which is arranged on the first vacuum assembly line (21) in a straddling manner and is used for measuring the thickness of the foam and adjusting the pitch of the foam;

the defect detection assembly line (3) comprises a second vacuum assembly line (31) for conveying foam, and a linear array camera mechanism (32) and two groups of area array camera mechanisms (33) which are arranged on the second vacuum assembly line (31) in a crossing manner along the conveying direction of foam products in sequence; the two groups of area array camera mechanisms (33) are respectively arranged at two ends of the second vacuum assembly line (31) and are used for collecting images of two ends of foam cotton when the foam cotton is positioned on the second vacuum assembly line (31); the linear array camera mechanism (32) is positioned at one end of the second vacuum assembly line (31) and is arranged between the first vacuum assembly line (21) and the second vacuum assembly line (31) and used for collecting light-transmitting images of foam;

the defect detection module (6) generates a defect detection scheme based on product demand information of foam, and controls the thickness measurement and distance change assembly line (2), the defect detection assembly line (3), the sorting module (4) and the outer box packaging module (5) to detect defects and sort and package the foam cut by the circular knife die-cutting machine (1) based on the defect detection scheme.

2. A defect detection system for power cell insulation according to claim 1, wherein: the variable-pitch mechanism (22) comprises a variable-pitch mounting frame (221), a Z-axis linear module (222), a first vacuum generator (223), a variable-pitch module (224) and a plurality of groups of suction mechanisms (225), wherein the Z-axis linear module (222) is arranged on the variable-pitch mounting frame (221); the distance-changing module (224) is arranged on a sliding table of the Z-axis linear module (222) and is arranged along the horizontal direction, a plurality of groups of suction mechanisms (225) comprise suction upright posts (226) and suction bottom plates (227), and the suction upright posts (226) are fixedly connected with a plurality of sliding tables of the distance-changing module (224) in one-to-one correspondence; the bottom of the suction upright post (226) is fixedly connected with the suction bottom plate (227), and the bottom of the suction upright post (226) and the suction bottom plate (227) are connected with a variable-pitch reinforcing rib (228) together; a plurality of suction cups (229) used for sucking foam are distributed on the suction bottom plate along the length direction of the suction bottom plate, the suction cups (229) are connected with a first vacuum generator (223), and a plurality of thickness sensors (230) used for measuring the thickness of the foam are arranged on the suction bottom plate.

3. A defect detection system for power cell insulation according to claim 2, wherein: the two groups of area array camera mechanisms (33) comprise an area array support (331), an area array camera (332) and a light supplementing light source (333), and the area array camera (332) is fixedly arranged on the area array support (331); the linear array camera mechanism (32) comprises a linear array support (321), a linear scanning camera (322) and a light-transmitting light source (323), wherein the linear scanning camera (322) is fixedly arranged on the linear array support (321), and the light-transmitting light source (323) is fixed at one end, close to the first vacuum assembly line (21), of the second vacuum assembly line (31) and is positioned below the foam in conveying; in the process that foam is conveyed to the second vacuum assembly line (31) from the first vacuum assembly line (21), the light-transmitting light source (323) transmits light to the foam passing through the upper portion of the light-transmitting light source so that the foam is in a light-transmitting state, and the line scanning camera (322) acquires images of the foam in the light-transmitting state to obtain a light-transmitting image of the foam.

4. A defect detection system for power cell insulation according to claim 1, wherein: the sorting module (4) comprises a scrapped product buffer storage position (41), a sorting assembly line (42), an inner box assembly line (43) and a material supplementing jacking mechanism (44) which are sequentially arranged, the sorting assembly line (42) is communicated with the defect detection assembly line (3), and the defect detection module (6) controls the defect detection assembly line (3) to convey foam to the sorting assembly line (42) after detecting defects of the foam based on collected images and light-transmitting images at two ends of the foam;

the scrapped product caching position (41) comprises a plurality of scrapped product caching bins (411) for caching the newspaper waste products and a plurality of suspected product caching bins (412) for caching the suspected products; the sorting assembly line (42) is a vacuum assembly line; the material supplementing jacking mechanism (44) comprises a plurality of material supplementing bins (441) for storing foam and material supplementing jacking cylinders (442) which are arranged at the bottoms of the material supplementing bins (441) and used for jacking foam in the material supplementing bins (441);

a sorting and carrying mechanism (7) for sorting foam according to defect detection results is arranged above the scrapped product caching position (41), the sorting assembly line (42) and the inner box assembly line (43); and a material supplementing carrying mechanism (8) for supplementing materials to the inner box assembly line (43) according to the defect detection result is arranged above the inner box assembly line (43) and the material supplementing jacking mechanism (44).

5. A defect detection system for power cell insulation according to claim 4, wherein: the inner box assembly line (43) comprises a third vacuum assembly line (431) and a plurality of groups of inner box receiving mechanisms (432), and the inner box receiving mechanisms (432) comprise a blocking push box assembly (433) and a plurality of inner box buffering bins (434) for placing foam packaging inner boxes; the inner box assembly line (43) is communicated with the outer box packaging module (5), and the outer box packaging module (5) is positioned at the downstream of the inner box assembly line (43); the blocking box pushing assemblies (433) are arranged at one end, close to the outer box packaging module (5), of the third vacuum assembly line (431);

the blocking pushing box assembly (433) comprises a lifting blocking cylinder (435), a blocking boosting slide block (436) and a boosting slide table cylinder (437), wherein the lifting blocking cylinder (435) is arranged on a slide table of the boosting slide table cylinder (437) along the vertical direction, the blocking boosting slide block (436) is arranged at the lifting end of the lifting blocking cylinder (435), and a boosting inclined plane is arranged at one end, close to the outer box packaging module (5), of the blocking boosting slide block (436);

an inner box buffer assembly line (45) is arranged on one side of the upstream of the inner box assembly line (43), the inner box buffer assembly line (45) comprises a fourth vacuum assembly line (451) and a plurality of groups of inner box buffer mechanisms (452), each group of inner box buffer mechanisms (452) comprises an inner box blocking assembly (453) and a plurality of inner box temporary storage bins (454) for storing foam packaging inner boxes, and each inner box blocking assembly (453) is arranged at one end, close to the inner box assembly line (43), of the fourth vacuum assembly line (451); the inner tank blocking assembly (453) comprises an inner tank blocking cylinder (455) and an inner tank blocking plate (456), and the inner tank blocking plate (456) is mounted on the telescopic end of the inner tank blocking cylinder (455).

6. A defect detection system for power cell insulation according to claim 4, wherein: the sorting and carrying mechanism (7) comprises a sorting mounting plate (71), an X-axis sorting linear module (72) mounted on the sorting mounting plate (71), a Z-axis sorting linear module (73) mounted on a sliding table of the X-axis sorting linear module (72), a second vacuum generator (74) and a plurality of groups of sorting and absorbing components (75), wherein the second vacuum generator (74) and the plurality of groups of sorting and absorbing components (75) are mounted on the sliding table of the Z-axis sorting linear module (73), a distance adjusting sliding rail (76) is arranged on the sliding table of the Z-axis sorting linear module (73), the plurality of groups of sorting and absorbing components (75) are arranged on the distance adjusting sliding rail (76) in a sliding mode, and the plurality of groups of sorting and absorbing components (75) are connected with a distance adjusting cylinder (77) for adjusting the distance of the sorting and absorbing components together; the plurality of groups of sorting and sucking assemblies (75) comprise sorting substrates (751), a plurality of sorting bottom plates (752) arranged at the bottoms of the sorting substrates (751) and sorting suction nozzles (753) uniformly distributed at the bottoms of the sorting bottom plates (752), and sorting reinforcing ribs (754) are arranged between the sorting substrates (751) and each sorting bottom plate (752); the sorting suction nozzles (753) of the sorting suction assemblies (75) are connected with the second vacuum generators (74), the output ends of the second vacuum generators (74) are in one-to-one correspondence with the sorting suction nozzles (753) of the sorting bottom plates (752), and the sorting suction nozzles (753) of the same sorting bottom plate (752) are connected with a single output end of the second vacuum generators (74) together.

7. A defect detection system for power cell insulation according to claim 4, wherein: the feeding and carrying mechanism (8) comprises a feeding mounting plate (81), an X-axis feeding linear module (82) arranged on the feeding mounting plate (81), a Z-axis feeding linear module (83) arranged on a sliding table of the X-axis feeding linear module (82), a third vacuum generator (84) and a feeding and absorbing assembly (85), wherein the third vacuum generator (84) and the feeding and absorbing assembly (85) are arranged on the sliding table of the Z-axis feeding linear module (83); the feeding suction assembly (85) comprises a feeding substrate (851), a plurality of feeding bottom plates (852) arranged at the bottom of the feeding substrate (851) and feeding suction nozzles (853) uniformly distributed at the bottom of the feeding bottom plates (852), and feeding reinforcing ribs (854) are arranged between the feeding substrate (851) and each feeding bottom plate (852); the feeding suction nozzles (853) on the feeding bottom plates (852) are connected with the third vacuum generator (84), the output ends of the third vacuum generator (84) are in one-to-one correspondence with the feeding suction nozzles (853) of the feeding bottom plates (852), and the feeding suction nozzles (853) of the same feeding bottom plate (852) are commonly connected with a single output end of the third vacuum generator (84).

8. A defect detection system for power cell insulation according to claim 1, wherein: the outer box packaging module (5) comprises an outer box packaging frame (51) and two outer box buffer production lines (52) which are arranged on the outer box packaging frame (51) in parallel; a plurality of groups of jacking clamping mechanisms (53) for storing the foam packaging outer boxes are arranged between the two outer box buffering production lines (52), each jacking clamping mechanism (53) comprises two groups of clamping assemblies (54) arranged along the material conveying direction, each clamping assembly (54) comprises a clamping clamp (541) for accommodating the foam packaging outer box and a jacking cylinder (542) for driving the clamping clamp (541) to lift;

one end of the outer box packaging frame (51) far away from the inner box assembly line (43) is provided with a plurality of groups of size adjusting components (55), and the size adjusting components (55) comprise a size adjusting cylinder (551) and an adjusting plate (552) arranged at the telescopic end of the size adjusting cylinder (551); when the outer box is packaged, the size adjusting air cylinder (551) is controlled according to the size of the foam packaging outer box to drive the adjusting plate (552) to move for a specified distance, the foam packaging outer box is placed in the two clamping clips (541) of the jacking clamping mechanism (53), the inner box assembly line (43) conveys a plurality of groups of fully loaded foam packaging inner boxes into the foam packaging outer box, the jacking air cylinder (542) drives the clamping clips (541) to descend, and the two outer box buffering assembly line (52) conveys the fully loaded foam packaging outer boxes to a buffering area preset by the outer box packaging frame (51).

9. A defect detection system for power battery insulation materials according to claim 3, wherein the defect detection module (6) generates a defect detection scheme based on product demand information of foam, and controls the thickness measurement and distance change assembly line (2), the defect detection assembly line (3), the sorting module (4) and the outer box packaging module (5) to detect defects of foam cut by the circular cutter die-cutting machine (1) based on the defect detection scheme, and the sorting packaging specifically comprises the following steps:

the defect detection module (6) lowers detection control parameter information to the positions of the circular knife die cutting machine (1), the thickness measuring and distance changing assembly line (2), the defect detection assembly line (3), the sorting module (4) and the outer box packaging module (5) for parameter setting according to a defect detection scheme;

According to the product demand information and the defect detection scheme, a raw material scheduling instruction is sent to a worker, the worker conveys production to a circular cutter die-cutting machine (1) according to the raw material scheduling instruction, the defect detection module (6) generates a composite cutting instruction according to foam composite cutting flow information, and the composite cutting instruction is sent to the circular cutter die-cutting machine (1) to control the circular cutter die-cutting machine to perform composite cutting on production raw materials according to the foam composite cutting flow to obtain foam meeting the product demand;

the defect detection module (6) generates a detection control instruction according to the foam detection flow information, sends the detection control instruction to the thickness measurement and distance change assembly line (2) and the defect detection assembly line (3), detects defects of foam conveyed by the circular cutter die-cutting machine (1) according to the foam detection flow, and outputs a foam detection result;

the defect detection module (6) generates sorting and packaging control instructions according to the foam sorting and packaging flow information, and sends the sorting and packaging control instructions to the sorting module (4) and the outer box packaging module (5), so that the sorting, feeding and packaging of the detected foam are performed according to the foam sorting and packaging flow according to the foam detection result.

10. A defect detection system for power cell insulation according to claim 9, wherein: the defect detection module (6) detects defects of foam conveyed by the circular knife die-cutting machine (1) according to a foam detection flow, and specifically comprises the following steps:

Thickness measurement: based on detection control instructions, the first vacuum assembly line (21) is controlled to adsorb and convey foam conveyed by the circular knife die-cutting machine (1) for a specified distance, the Z-axis linear module (222) of the distance-changing mechanism (22) is controlled to drive the plurality of groups of suction mechanisms (225) to press down for corresponding strokes, and the thickness of the foam tightly attached to the first vacuum assembly line (21) is measured through the thickness sensor (230) on the suction mechanisms (225);

foam pitch change: after the thickness measurement is completed, controlling a first vacuum generator (223) to start sucking foam through a sucking disc (229) on a sucking bottom plate based on a detection control instruction, and then adjusting the intervals of a plurality of groups of sucking mechanisms (225) through a variable-pitch module (224) according to the detection control instruction, and then placing the foam on a first vacuum assembly line (21);

and (3) image acquisition: the first vacuum assembly line (21) conveys the foam after the distance change to the second vacuum assembly line (31), the brightness of the light transmission light source (323) is regulated according to the detection control instruction, the foam passing above the light transmission light source is subjected to light transmission irradiation to enable the foam to be in a light transmission state, and the line scanning camera (322) is used for collecting images of the foam in the light transmission state to obtain a light transmission image of the foam; the second vacuum assembly line (31) adsorbs and conveys foam cotton for a specified distance, and two groups of area array camera mechanisms (33) positioned at two ends of the second vacuum assembly line (31) start image acquisition on two ends of foam cotton on the second vacuum assembly line (31) to obtain images of two ends of the foam cotton;