CN217180631U

CN217180631U - Tab workpiece surface condition detection device and detection production line

Info

Publication number: CN217180631U
Application number: CN202220162140.9U
Authority: CN
Inventors: 沈晓宇; 吴红星; 张振华; 谢军
Original assignee: Zhejiang Tony Electronic Co ltd
Current assignee: Zhejiang Tony Electronic Co ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-08-12
Anticipated expiration: 2032-01-21

Abstract

An object of the utility model is to provide a can carry out utmost point ear work piece surface situation detection device and detection production line that accurate detected to utmost point ear work piece particular position clearly high-efficiently, include the imaging system who is used for going on shining illumination system and be used for shooing required detection position to utmost point ear work piece surface, include among the illumination system and can shine the light source module that utmost point ear work piece surface in different angular position, the light that light source module sent is the beam form and the light that different angular position sent all can be collected in the same department of utmost point ear work piece surface, need carry out the position that detects to utmost point ear work piece surface promptly.

Description

Lug workpiece surface condition detection device and detection production line

Technical Field

The utility model relates to a battery production check out test set field specifically is a utmost point ear work piece surface condition detection device and detection production line.

Background

The tab is a raw material of a lithium ion polymer battery product, and is needed to be used in a common battery in a mobile phone or a notebook computer, and the tab is a metal conductor which leads out the positive electrode and the negative electrode of the battery from a battery cell, namely the positive electrode and the negative electrode of the battery are contact points during charging and discharging. Since the battery cell is filled with an extremely corrosive electrolytic medium, the metal strip of the tab is easily corroded and oxidized in such an environment to cause damage, and therefore, passivation treatment is usually performed on the metal strip of the tab to form a protective passivation film. In the process of producing, processing and forming the lug, the surface of the lug is inevitably worn, damaged or attached with oil stains or impurity particles, and at the moment, equipment is required to be utilized to carry out targeted observation and detection on the surface condition of the lug, particularly on some key positions for subsequent connection or further processing, so that unqualified products are screened out, and the working reliability of battery products is ensured.

For example, a work piece surface quality detection device based on machine vision that discloses in chinese utility model patent document with publication number CN201821307482.5, including defeated material mechanism, proximity sensor, area array camera, LED flash lamp, time delay module, industrial computer and sorting mechanism, defeated material mechanism includes vibration charging tray, guide rail and conveyer belt, the guide rail is located between vibration charging tray and the conveyer belt, it is the arch to realize the separation of adjacent work piece, proximity sensor, area array camera, LED flash lamp set gradually along work piece direction of delivery the delivery top of conveyer belt, proximity sensor is connected to the signal input part of time delay module, and area array camera and LED flash lamp are connected respectively to its signal output part, the industrial computer is connected respectively area array camera with sort out the mechanism.

The online detection device for the defects on the outer surface of the workpiece provided by the scheme can detect the surface condition of the workpiece, but the light source arranged in the online detection device for the defects on the outer surface of the workpiece is fixedly arranged. For a workpiece with a small overall size, such as a tab, oil stains, scratches and other flaws on the surface of the workpiece cannot be clearly illuminated and displayed under a light source with a fixed angle, so that equipment cannot capture and screen out the defective workpiece, which causes the defective rate of produced battery products to be increased, and the safety and reliability to be reduced.

As disclosed in chinese utility model patent document No. CN212275619U, an on-line detection apparatus for surface defects of a workpiece includes a conveyor belt, an industrial camera module, an industrial light source module, a data processing controller, an ethernet controller, and an upper computer module; the industrial camera module comprises a lower camera unit arranged on the periphery above the conveyor belt and a fifth camera vertically arranged above the conveyor belt; the industrial light source module comprises a lower light source group and an upper light source group; the data processing controller is respectively connected with the industrial camera module and the Ethernet controller through Ethernet cables; the Ethernet controller is connected with the upper computer through an Ethernet cable; the device can effectively eliminate the influence of illumination inequality through the industrial light source, and the cloth cover fault is reflected more clearly.

This scheme has utilized the mode that a plurality of light sources shine simultaneously to assist the camera and have discerned the flaw on work piece surface, though can alleviate the influence of illumination inequality to a certain extent, this mode again can lead to different light sources to influence each other in the position that needs carry out the pertinence and detect owing to shine the position not concentrated, reduces the recognition effect of camera.

To the above problem, the utility model provides a can clearly carry out utmost point ear work piece surface condition detection device and detection production line that accurate detected to utmost point ear work piece particular position high-efficiently.

SUMMERY OF THE UTILITY MODEL

The utility model provides a can clearly carry out utmost point ear work piece surface condition detection device and detection production line that accurate detected to utmost point ear work piece particular position high-efficiently.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a utmost point ear work piece surface condition detection device, includes the imaging system who is used for going on shining the illumination system and is used for shooing required detection position extremely ear work piece surface, contain the light source module that can shine extremely ear work piece surface in different angular position among the illumination system, the light that light source module sent is the beam form and the light homoenergetic that different angular position sent can be collected in the same department of utmost point ear work piece surface, need carry out the position that detects extremely ear work piece surface promptly.

As right the utility model discloses a preferably, contain the beam source of a plurality of independent workings of each other in the illumination module, can shine utmost point ear workpiece surface required detection position alone.

Preferably, the light beam emitted by each light beam source in the light source module has different colors; the imaging system comprises a plurality of imaging modules capable of identifying light beams with different colors, and is used for imaging the surface condition of the lug workpiece at one time when the detection position required by the surface of the lug workpiece is irradiated by matching with each light beam source.

As right the utility model discloses a preferred, include in the illumination module and can be fixed and carry out the beam source that shines to the required detection position in utmost point ear work piece surface in different angular position.

Preferably, the beam source is movably mounted on the frame and can move along a track in the shape of a circular arc.

As right the utility model discloses a preferably, still include among the imaging system and be used for measuring the interval measuring and calculating module of distance between the detection position point on utmost point ear work piece surface and the camera lens among the imaging system.

As right the utility model discloses a preferably, still include be used for right the distance measure and calculate the interval data that the module obtained with the utmost point ear work piece surface situation that imaging system shot the acquisition carries out the intelligent analysis module of collaborative analysis to judge the utmost point ear work piece that detects position point surface situation and surpass the allowed range.

The utility model provides a utmost point ear work piece detection production line, includes foretell utmost point ear work piece surface condition detection device, still include set up in the transport transfer device of imaging system below, it contains the conveyer belt that is used for bearing and removes a plurality of utmost point ear work pieces to carry among the transport transfer device

As right the utility model discloses a preferred, carry among the transfer device contain with intelligent analysis module electric connection receives the drive module of intelligent analysis module control, is used for control utmost point ear work piece on the conveyer belt stops or continues backward movement at assigned position.

As right the utility model discloses an it is preferred, still include by intelligent analysis module control is used for getting rid of unqualified utmost point ear work piece removes the material device.

To sum up, the utility model discloses following a plurality of beneficial effect can be realized:

1. utmost point ear work piece surface situation detection device can utilize a plurality of beam sources among the illumination system to utmost point ear work piece surface's same position emission beam and throw light on for the follow-up flaw such as mar or greasy dirt that is used for processing or connects the position department of installation of utmost point ear work piece surface is more for appearing clearly and is caught the discernment by imaging module, can take place by the condition of clear observation under specific angular position flaw, make the recognition effect to utmost point ear work piece surface situation more accurate reliable.

2. Utmost point ear work piece surface situation detection device set up the light that sends through the beam source with each different angle to different colours and set up a plurality of corresponding imaging module in imaging system, realized that the light beam to each colour is shone independently and is imaged by different imaging module when utmost point ear work piece surface simultaneously, avoided influencing mutually and promoted detection efficiency simultaneously.

3. Utmost point ear work piece surface situation detection device in still include in the imaging system and be arranged in measuring utmost point ear work piece surface's detection position point and imaging system between the camera lens apart from the interval calculation module to utilize intelligent analysis module to combine the analysis with interval data and the flaw condition picture of shooing discerning, the size of calculating the flaw part more accurately and carry out more efficient judgement screening to utmost point ear work piece.

Drawings

Fig. 1 is a schematic structural view of the surface condition detection device for the tab workpiece;

fig. 2 is a schematic structural view of the lug workpiece surface condition detection device, wherein a beam source is movably mounted;

fig. 3 is a schematic side structure view of the tab workpiece detection production line;

fig. 4 is a schematic diagram of information transmission relationship guidance between the detection and data transmission modules.

In the figure:

1-pole ear workpiece;

2-a tab workpiece surface condition detection device;

3-illumination system, 3 a-light beam source;

4-an imaging system;

5-a frame;

6-distance measuring module;

7-conveying transfer device, 7 a-conveying belt, 7 b-driving module.

Detailed Description

The following specific embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications of the present embodiments without inventive contribution as required after reading the present specification, but all the embodiments are protected by patent laws and protection within the scope of the present invention.

The scheme is realized by the following technical means:

example 1: due to the characteristics of light weight, high energy density, safety, stability and the like, the lithium ion battery is widely applied to various portable product devices, and the tabs are used as indispensable necessary components in the lithium ion battery and play a role in leading the positive electrode and the negative electrode of the battery outwards from the inside of the battery. Because one end of the tab is tightly attached and fixed with the pole piece in the battery during fixed installation, and the other end of the tab is required to be connected with the positive electrode and the negative electrode of external electric equipment, the scratch damage or the impurity salient points on the surface of the tab workpiece 1 can affect the firmness of fixed connection with other components and the stability during current transmission. Therefore, it is necessary to observe and detect the surface condition of the tab work piece 1, to screen out the tab work pieces 1 whose surface condition does not meet the requirements, and to provide necessary preparation conditions for producing lithium battery products with better performance quality and longer service life.

The detection device 2 for the surface condition of the lug workpiece mainly comprises an illumination system 3 for irradiating the surface of the lug workpiece 1 and an imaging system 4 for shooting a position to be detected, wherein the illumination system 3 comprises a common laser illumination module which is a light source module directly used for irradiating the surface of the lug workpiece 1, and an emitting part serving as a light beam source 3a can emit a high-brightness laser beam which is irradiated to the surface of the lug workpiece 1 in a beam shape, so that the defect part on the surface of the workpiece is more clearly displayed; the imaging system 4 is mainly composed of a high-resolution CCD camera module for shooting the surface of the tab workpiece 1, and realizes shooting and imaging of the surface condition of the tab workpiece 1. Compared with a common detection device, the detection device 2 for the surface condition of the tab workpiece has the characteristics that the light source module comprises a plurality of mutually independent beam sources 3a, and each beam source 3a points to the same position on the surface of the tab workpiece 1 to be detected, so that each laser beam is converged at the position, a more comprehensive irradiation effect on a special position point to be detected is realized, and the accuracy of the detection effect of equipment is improved.

Further, the emitting portion as the beam source 3a may be fixedly mounted on the frame 5 in an adjustable movable manner. Specifically, a guide rail in the shape of a circular arc is fixedly mounted on the frame 5, and a transmitting part serving as the beam source 3a is mounted on the guide rail, so that the transmitting part can move along the guide rail and be fixedly locked at a plurality of angular positions, and the beam emitted by the beam source 3a is always irradiated on a specific position point on the surface of the tab workpiece 1, and under the condition of reducing the number of the beam sources 3a, the irradiation requirement for surface detection of the tab workpiece 1 can be met; the quantity of emission portion has been reduced in the setting of this structure, can control the cost of product effectively, is convenient for popularize equipment.

Further, a distance measuring and calculating module 6 for measuring the distance between the detection position point on the surface of the tab workpiece 1 and a lens in the imaging system 4 and an intelligent analysis module for processing data are integrated in the imaging system 4. The intelligent analysis module includes an image processing unit (or an image capture card), image processing software, a monitor, an input/output unit, and the like. When the image shot by the CCD camera module is converted into a digital signal and transmitted to the intelligent analysis module, the image processing unit converts the digital signal back to a graphic signal, divides the graphic into a plurality of independent image blocks (such as 10000 image blocks in total of 100 × 100), compares and analyzes each image block with the stored image block on the surface in the preset ideal state by using the built-in image processing software of each image block, and measures and calculates the similarity degree percentage of the two image blocks. If the threshold value as the detection criterion is set to 80%, the image block having a degree of similarity of 80% or more is determined to be acceptable, and otherwise, the image block is determined to be unacceptable. And finally, analyzing the proportion between the qualified image blocks and the total image blocks through image processing software again, and if the proportion is greater than or equal to 80%, determining that the surface condition of the workpiece meets the composite requirement, otherwise, determining that the workpiece does not meet the composite requirement. It is worth noting that due to the difference in thickness between different specifications and models of the tab workpiece, the distance between the tab workpiece and the CCD camera module changes, and further the surface defect condition of the tab workpiece is enlarged and reduced, and therefore the distance parameter obtained by the distance measuring and calculating module 6 needs to be simultaneously input into the intelligent analysis module to correct the measuring and calculating condition, so as to realize accurate capture and identification of the defect part at the specific position of the tab workpiece 1, and further accurately analyze the size, height, depth and type of the defect part.

When the device 2 for detecting the surface condition of the tab workpiece is applied to a tab workpiece 1 detection production line, the tab workpiece 1 is transported by a transport device 7 comprising a conveyor belt 7a, the transport device 7 is driven by a motor, and the driving module 7b controls the specific working state of the transport device 7. This drive module 7b and intelligent analysis module electric connection, under the control of the program is predetermine in inside, make conveyer belt 7a intermittent type nature motion, realize carrying out the high-efficient transportation forward when accurate detection to a plurality of utmost point ear work piece 1 surface state on conveyer belt 7 a.

In utmost point ear work piece 1 detection production line, still include to set up in the material device that goes of conveyer belt 7a side, specifically, contain the pneumatic shower nozzle that receives intelligent analysis module control in this material device that goes. During operation, when the intelligent analysis module detects unqualified utmost point ear work piece 1, just the work of the pneumatic nozzle among the material device that goes utilizes high-speed spun compressed air to blow off unqualified utmost point ear work piece 1 from conveyer belt 7a, the accurate screening work of the utmost point ear work piece 1 of realization.

Example 2: in the actual use process of the detection device, when a plurality of laser beams irradiate the surface of the tab workpiece 1 at the same time, the laser beams converged mutually may cause the occurrence of some shallow scratches and fine protrusions, and the situation that the laser beams cannot be recognized and captured by the imaging system 4 due to the irradiation of the over-strong light beams generated by the convergence occurs. Therefore, on the basis of embodiment 1, in order to further improve the accuracy of the imaging system 4 in identifying the surface condition of the tab workpiece 1, the light beams emitted by the light beam sources 3a at different angular positions are set to be different colors, such as red, green, blue, purple, etc., in this embodiment; accordingly, the imaging system 4 is provided with a plurality of imaging modules which are independent of each other and perform identification detection only for light of one color. At this moment, each beam source 3a irradiates the detection position point at a certain moment, but each imaging module only recognizes and captures the display picture irradiated by the corresponding color beam, so that the imaging system 4 can image the irradiation display pictures at a plurality of different angles at one time and transmit the irradiation display pictures to the intelligent analysis module for collaborative analysis processing without being decomposed into a plurality of independent irradiation stages, the detection and identification time is saved, and the detection and identification accuracy can be further improved while the detection work efficiency of the lug workpiece surface condition detection device 2 is improved.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope of the present invention, and these modifications or replacements should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a utmost point ear work piece surface condition detection device which characterized in that: include illumination system (3) that are used for shining utmost point ear work piece (1) surface and be used for carrying out imaging system (4) of shooing to required detection position, contain the light source module that can shine utmost point ear work piece (1) surface in different angular position among the illumination system (3), the light that light source module sent is the beam form and light that different angular position sent all can assemble in utmost point ear work piece (1) same department on surface, need carry out the position that detects utmost point ear work piece (1) surface promptly.

2. The surface condition detection device for the tab workpiece according to claim 1, characterized in that: the light source module comprises a plurality of light beam sources (3 a) which work independently, and can be used for independently irradiating the position required to be detected on the surface of the polar ear workpiece (1).

3. The tab workpiece surface condition detecting device as claimed in claim 2, wherein: the light beam emitted by each light beam source (3 a) in the light source module is different in color; the imaging system (4) comprises a plurality of imaging modules capable of identifying light beams with different colors, and the imaging modules are used for imaging the surface condition of the lug workpiece at one time when being matched with each light beam source (3 a) to irradiate the required detection position on the surface of the lug workpiece.

4. The surface condition detection device for the tab workpiece according to claim 1, characterized in that: the light source module comprises a light beam source (3 a) which can be fixed at different angle positions and irradiates the required detection position on the surface of the lug workpiece (1).

5. The surface condition detection device for the tab workpiece according to claim 4, characterized in that: the beam source (3 a) is movably mounted on the frame (5) and can move along a circular arc-shaped track.

6. The surface condition detection device for the tab workpiece according to claim 1, characterized in that: the imaging system (4) also comprises a distance measuring and calculating module (6) for measuring the distance between the detection position point on the surface of the lug workpiece (1) and a lens in the imaging system (4).

7. The tab workpiece surface condition detecting device as claimed in claim 6, wherein: the system also comprises an intelligent analysis module which is used for carrying out cooperative analysis on the distance data obtained by the distance measuring and calculating module (6) and the surface condition of the lug workpiece (1) obtained by the imaging system (4) so as to judge the lug workpiece (1) with the surface condition of the detection position point exceeding the allowable range.

8. The utility model provides a utmost point ear work piece detects production line which characterized in that: the surface condition detection device for the tab workpieces as claimed in claim 7, further comprising a conveying and transferring device (7) disposed below the imaging system (4), wherein the conveying and transferring device (7) comprises a conveying belt (7 a) for carrying and moving the plurality of tab workpieces (1).

9. The tab workpiece detection production line as claimed in claim 8, wherein: the conveying and transferring device (7) comprises a driving module (7 b) which is electrically connected with the intelligent analysis module and controlled by the intelligent analysis module, and the driving module is used for controlling the stopping or continuous backward movement of the pole lug workpiece (1) on the conveying belt (7 a) at the specified position.

10. The tab workpiece detection production line as claimed in claim 8, wherein: the device also comprises a material removing device which is controlled by the intelligent analysis module and is used for removing the unqualified tab workpiece (1).