CN108088852A - Automatic detection casing appearance device - Google Patents

Abstract

The invention discloses a device for automatically detecting the appearance of a shell, which includes a frame, on which a conveying device, an image acquisition device, a processing device and a rejecting device are arranged; the conveying device drives the battery shell to roll along the conveying direction of the conveying device to realize The movement and rotation of the housing; the image acquisition device is relatively fixed on the frame and includes an image acquisition device and a light source arranged on the side of the image acquisition device, the light source is irradiated on the housing, and the image acquisition device is used to acquire images of the housing; the processing The device is connected to the image collector, and the processing device is used to obtain the image of the casing and judge the appearance defect and position of the casing according to the image of the casing; the rejecting device is connected to the processing device and used to push out the defective casing when it occurs delivery device. It has the following advantages: shell conveying, detection, and rejection are carried out synchronously, and the detection cycle is shortened.

Description

Automatic detection of shell appearance device

technical field

The invention relates to the field of battery production equipment, in particular to a device for automatically detecting the appearance of a casing.

Background technique

With the advancement of science and technology, the application field of lithium batteries is further expanding. From mobile phone batteries, electric bicycle batteries, to hybrid car batteries, lithium batteries are used everywhere. In these applications, the cylindrical power lithium battery shell is made of aluminum shell or steel shell. Its surface will be damaged during its transportation and manufacturing process, and the use of inferior steel or aluminum shells will pose hidden dangers to the safety performance of lithium batteries. In view of this deficiency, the Chinese patent database discloses or announces two solutions: such as CN205436362U, a multi-angle display mechanism for automatic detection of the outer surface of the battery stainless steel case, including an outer bottom inner bottom display turntable arranged on the base and The side display turntable, the outer bottom and the inner bottom display turntable are provided with more than two battery stainless steel case side clamps, and the side display turntable is provided with more than two battery stainless steel casing casing shafts. Such as CN206578040U, a battery steel shell appearance detection device, including a detection table, a main turntable is rotatably arranged on the top of the detection table, at least three rotating tables are evenly distributed on the edge of the main rotating table, and an adsorption piece is embedded in the center of the rotating table. The adsorption surface of the part is set vertically or obliquely downward. The adsorption part is used to adsorb with the closed end surface of the battery steel case. Adsorption force control parts are arranged on the top; lighting parts are arranged above the main turntable; qualified product drop hoppers and defective product drop hoppers corresponding to the position of the rotary table are also arranged on the detection table. These two mechanisms both have complex structures, take up a lot of space, and cannot realize detection during the conveying process.

Contents of the invention

The invention provides a device for automatically detecting the appearance of a casing, which overcomes the shortcomings of the device for detecting the appearance of the casing in the background art.

The adopted technical scheme that the present invention solves its technical problem is:

The device for automatically detecting the appearance of the shell includes a frame, which is equipped with a conveying device, an image acquisition device, a processing device and a rejecting device; the conveying device drives the battery's shell to roll along the conveying direction of the conveying device to realize the movement of the shell and Autorotation; the image acquisition device is relatively fixed on the frame and includes an image acquisition device and a light source arranged on the side of the image acquisition device, the light source is irradiated on the casing, and the image acquisition device is used to collect images of the casing; the processing device is connected to the image Collector, the processing device is used to acquire the image of the shell and judge the appearance defect and position of the shell according to the image of the shell; the rejecting device is connected to the processing device and is used to push out the conveying device when defective shells appear.

In a specific embodiment: the image collector includes an image sensor and a lens unit, the light source is arranged on the object side of the lens unit, the image sensor is arranged on the image side of the lens unit, and the image sensor and the lens unit cooperate.

In a specific implementation manner: the light source includes a blue light emitting diode.

In a specific embodiment: the frame includes two mounting frames arranged at intervals, the mounting frame is equipped with a plurality of bearing seats arranged at intervals along the conveying direction of the conveying device, and the bearing seats of the two mounting frames are symmetrically arranged; the conveying device It includes a driving mechanism and a plurality of roller mechanisms. The roller mechanism is rotatably mounted on the bearing seats of the two installation frames. The driving mechanism is connected to the roller mechanism to drive the roller mechanism to rotate. The rotation of the roller mechanism drives the shell of the battery to roll. Move forward along the conveying direction of the conveying device.

In a specific embodiment: the roller mechanism includes a roller shaft connected to the bearing seats of the two installation frames and at least one roller fixed on the roller shaft, and the driving mechanism is connected to the roller shaft through a chain wheel mechanism; the drive The mechanism includes a motor, and the sprocket mechanism includes a driving sprocket, a driven sprocket fixed at the end of the roller shaft and a chain.

In a specific embodiment: the above-mentioned driven sprocket is coaxially fixed to each roller shaft, and a tensioning sprocket is arranged between each adjacent two roller mechanisms, and the tensioning sprocket and the The driven sprockets on two adjacent roller mechanisms are staggered up and down, and the chain is wound around the driving sprocket, the driven sprocket and the tensioning sprocket.

In a specific embodiment: the number of the driving sprocket is two, the two driving sprockets are at the same height and lower than the driven sprocket, and an auxiliary sprocket is also installed on the mounting frame, and the auxiliary sprocket Located between the two driving sprockets, the chain winds around the driving sprocket, driven sprocket, tensioning sprocket and auxiliary sprocket.

In a specific embodiment: the rejecting device includes a cylinder mechanism and a rejecting head, the cylinder mechanism includes a cylinder fixed on the frame and located on one side of the conveying device and a piston rod connected to the cylinder, the end of the piston rod protrudes Outside the cylinder and the rejecting head is fixed at the end of the piston rod, the piston rod moves and pushes out the defective products of the shell through the rejecting head.

In a specific embodiment: it also includes a lower conveyor belt, the conveying device and the lower conveyor belt are staggered up and down; the rejecting device includes a rejecting seat and a turning power device, the rejecting seat can be rotatably connected to the frame and is located between the conveying device and Between the lower conveyor belts, the turning power device is connected to the rejecting seat and drives the rejecting seat to flip and switch between the conveying station and the rejecting station. Connecting the conveying device and the lower conveying belt, a rejecting gap for rejecting unqualified products is formed between the rejecting seat of the rejecting station and the lower conveying belt, and the turning power device is connected with the processing device.

Compared with the background technology, this technical solution has the following advantages:

The shell rotates forward, the light emitted by the light source shines on the surface of the shell, the shell reflects the light from the light source to the image collector, the image collector collects the appearance of the shell to form an image, and the processing device is used to acquire the image and judge according to the image The appearance defect and position of the shell, the rejecting device is used to push it out of the conveying device when there is a defective shell, so it can produce the following technical effects: First, the light emitted by the light source shines on the surface of the shell, and the shell reflects the light from the light source To the image collector, the image collector collects the appearance of the casing to form an image, the image is clear, the efficiency is high, and the detection cycle is short; second, the casing rotates forward, and the image collector can collect the entire periphery of the casing, and the detection effect is good; Three, shell transportation, detection, and rejection are carried out simultaneously, shortening the inspection cycle; Fourth, the processing device automatically records the position of steel shells with appearance defects, and the removal accuracy is high, which improves the appearance inspection efficiency.

The roller rotates, and the friction between the roller and the casing is used to drive the casing to rotate forward, so that the image collector can collect all the images of the outer periphery of the casing, and realize the simultaneous transmission and detection.

Each roller shaft is coaxially connected with the above-mentioned driven sprocket, and a tensioning sprocket is arranged between each adjacent two roller mechanisms, and the tensioning sprocket is connected to the driven sprocket on the adjacent two roller mechanisms. The sprockets are arranged staggered up and down, and the chain is wound around the driving sprocket, the driven sprocket and the tensioning sprocket, the transmission is stable and reliable, and the structure is simple and compact.

The number of driving sprockets is two, and the two driving sprockets are at the same height and lower than the driven sprocket. An auxiliary sprocket is also installed on the mounting frame, and the auxiliary sprocket is arranged between the two driving sprockets. The chain is wound around the driving sprocket, the driven sprocket, the tensioning sprocket and the auxiliary sprocket, the transmission is stable and reliable, and the structure is simple and compact.

The end of the piston rod extends out of the cylinder and the rejecting head is fixedly connected to the end of the piston rod. The piston rod moves and ejects the defective products of the shell through the rejecting head. The structure is simple and compact.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the delivery device of this specific embodiment.

Fig. 2 is a schematic structural view of the sprocket mechanism in this specific embodiment.

Fig. 3 is a schematic diagram of the image acquisition device in this specific embodiment.

FIG. 4 is a schematic diagram of a processing device and a rejecting device according to this specific embodiment.

Detailed ways

Please refer to FIG. 1 to FIG. 4 , the device for automatically detecting the appearance of the shell includes a frame 10 on which a conveying device 20 , an image acquisition device 30 , a processing device 40 and a rejecting device 50 are arranged. The image acquisition device 30 is located right above the delivery device 20 , and the rejecting device 50 is located between the image acquisition device 30 and the delivery device 20 .

Please refer to FIG. 1 and FIG. 2 , the conveying device 20 drives the casing 60 of the battery to roll along the conveying direction of the conveying device 20 to realize the movement and rotation of the casing 60 . The frame 10 includes a lower bracket 13 and two mounting frames 11 fixedly connected to the lower bracket 13 and arranged at intervals from left to right. The bearing seat 12 of 11 is symmetrically arranged left and right. The conveying device 20 includes a driving mechanism and a roller mechanism 21; the roller mechanism 21 is rotatably attached to the mounting brackets 11 on both sides, and the driving mechanism is transmission-connected to the roller mechanism 21 to drive the roller mechanism 21 to rotate, through the roller mechanism 21 The rotation drives the casing 60 of the battery to roll along the conveying direction of the conveying device 20 . The roller mechanism 21 includes a roller shaft 211 connected to the bearing housing 12 of the mounting frame 11 on both sides and a roller 212 fixed on the roller shaft 211, and the driving mechanism is connected to the roller shaft 211 through the chain wheel mechanism 22; The driving mechanism includes a motor 23, and the sprocket mechanism 22 includes a driving sprocket 221, a driven sprocket 222 and a chain 223 fixed at the end of the roller shaft; A sprocket 222, a tensioning sprocket 224 is arranged between each adjacent two roller mechanisms 21, and the tensioning sprocket 224 and the driven sprocket 222 on the adjacent two roller mechanisms 21 are staggered up and down; The driving sprocket 221 is provided with two numbers, the two driving sprockets 221 are at the same height and lower than the driven sprocket 222, and an auxiliary sprocket 225 is also installed on the mounting bracket 11, and the auxiliary sprocket 225 is set Between the two driving sprockets 221 , the chain 223 winds around the driving sprocket 221 , the driven sprocket 222 , the tensioning sprocket 224 and the auxiliary sprocket 225 .

Please refer to Fig. 3 and Fig. 4, the image acquisition device 30 is relatively fixed on the frame 10 and includes an image acquisition device 31 and a light source 32 arranged on the object side of the image acquisition device 31, the light source 32 is irradiated on the casing 60, the image The collector 31 is used to collect the image of the housing 60; the image collector 31 includes an image sensor 311 and a lens unit 312, the light source 32 is arranged on the object side of the lens unit 312, and the image sensor 311 is arranged on the image side of the lens unit 312, The image sensor 311 cooperates with the lens unit 312 . The housing rotates forward, the light emitted by the light source 32 irradiates the surface of the housing 60 , the housing 60 reflects the light from the light source 32 to the image collector 31 , and the image collector 31 collects the appearance of the housing 60 to form an image. Preferably, the light source 32 is a blue light emitting diode, which has high brightness and low energy consumption. The image includes the whole of the outer revolving wall of the housing 60. For example, by taking two images, one image captures a revolving surface with a central angle of 180 degrees, and the other image captures a revolving surface with a central angle of 180 degrees. The image sensor 31 may use, for example, a charge-coupled device (CCD) as an image sensor.

If the processing device 40 is a personal computer, it is connected to the image collector 31 , and the processing device 40 is used to acquire the image of the casing 60 and judge the appearance defect and position of the casing 60 according to the image of the casing 60 . The processing device 40, for example, processes in the following manner: through the automatic color change region of the color change on the image (appearance defect will cause the color on the photographed picture to change), determine the change area of the change area, and determine whether the change area exceeds the set parameter The error range, if so, it will be identified as a defective product.

The rejecting device 50 is connected to the processing device 40 and is used to push out the conveying device 20 when there are defective shells 60 . The rejecting device includes a cylinder mechanism and a rejecting head 51. The cylinder mechanism includes a cylinder 52 fixed on the frame and positioned at one side of the conveying device and a piston rod 53 connected to the cylinder. The end of the piston rod stretches out of the cylinder and rejects The head is fixed at the end of the piston rod, and the piston rod moves and ejects the defective products of the shell through the rejecting head. The removal head is, for example, a buffer block. This frame is as having support frame 14, and this air cylinder is fixedly arranged on support frame 14.

In another specific embodiment: it differs from the previous specific embodiment in that it also includes a lower conveyor belt, the conveyor device and the lower conveyor belt are staggered up and down; the rejecting device includes a rejecting seat and a turning power device, the rejecting The seat can be rotatably connected to the frame and is located between the conveying device and the lower conveyor belt. The turning power device is connected to the rejecting seat and drives the rejecting seat to flip and switch between the conveying station and the rejecting station. The rejecting seat is provided with Connecting passage, the connecting passage located at the rejecting seat of the conveying station connects the conveying device and the lower conveyor belt, and a rejecting gap for rejecting unqualified products is formed between the rejecting seat at the rejecting station and the lower conveying belt. The processing device is connected, and the rejecting device has a simple structure and is easy to operate.

The above is only a preferred embodiment of the present invention, so the scope of the present invention cannot be limited accordingly, that is, equivalent changes and modifications made according to the patent scope of the present invention and the content of the specification should still be covered by the present invention In the range.

Claims (9)

1. The device for automatically detecting the appearance of the shell, including a frame, is characterized in that: the frame is provided with a conveying device, an image acquisition device, a processing device and a rejecting device; the conveying device drives the shell of the battery to roll along the conveying direction of the conveying device To realize the movement and rotation of the housing; the image acquisition device is relatively fixed on the frame and includes an image acquisition device and a light source arranged on the side of the image acquisition device, the light source is irradiated on the housing, and the image acquisition device is used to acquire images of the housing; The processing device is connected to the image collector, and the processing device is used to obtain the image of the casing and judge the appearance defect and position of the casing according to the image of the casing; the rejecting device is connected to the processing device and used to remove the defective casing It pushes out of the conveyor. 2. The device for automatically detecting the appearance of the housing according to claim 1, wherein the image collector includes an image sensor and a lens unit, the light source is arranged on the object side of the lens unit, and the image sensor is arranged on the image side of the lens unit , the image sensor cooperates with the lens unit. 3. The device for automatically detecting the appearance of the housing according to claim 2, wherein the light source comprises a blue light emitting diode. 4. The device for automatically detecting the outer appearance of the shell according to claim 1, characterized in that: the frame includes two mounting frames arranged at intervals, and the mounting frame is equipped with a plurality of bearing seats arranged at intervals along the conveying direction of the conveying device, the The bearing seats of the two mounting frames are symmetrically arranged; the conveying device includes a driving mechanism and a plurality of roller mechanisms, the roller mechanism is rotatably mounted on the bearing seats of the two mounting frames, and the driving mechanism is transmission-connected to the roller mechanism to drive the rollers The mechanism rotates, and the casing of the battery is driven to roll along the conveying direction of the conveying device through the rotating of the roller mechanism. 5. The device for automatically detecting the outer appearance of the casing according to claim 4, wherein the roller mechanism includes a roller shaft connected to the bearing seats of the two installation frames and at least one roller fixed on the roller shaft, the driving The mechanism is connected to the roller shaft through a sprocket mechanism; the driving mechanism includes a motor, and the sprocket mechanism includes a driving sprocket, a driven sprocket fixed at the end of the roller shaft and a chain, the motor is connected to the driving sprocket, and the chain winds Connect the driving sprocket and driven sprocket. 6. The device for automatically detecting the outer appearance of the housing according to claim 5, characterized in that: each of the roller shafts is coaxially fixed with the above-mentioned driven sprocket, and a sprocket is arranged between each adjacent two roller mechanisms. A tensioning sprocket, the tensioning sprocket and the driven sprockets on the two adjacent roller mechanisms are staggered up and down, and the chain is wound around the driving sprocket, the driven sprocket and the tensioning sprocket. 7. The device for automatically detecting the outer appearance of the shell according to claim 6, characterized in that: the number of the driving sprockets is two, the two driving sprockets are at the same height and lower than the driven sprocket, the mounting bracket An auxiliary sprocket is also installed on the upper, and the auxiliary sprocket is arranged between the two driving sprockets, and the chain is wound around the driving sprocket, the driven sprocket, the tensioning sprocket and the auxiliary sprocket. 8. According to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described automatic detection shell appearance device, it is characterized in that: the rejecting device comprises a cylinder mechanism and a rejecting head, and the cylinder mechanism comprises a A cylinder on one side of the conveying device and a piston rod connected to the cylinder. The end of the piston rod extends out of the cylinder and the rejecting head is fixedly connected to the end of the piston rod. out. 9. According to claim 1 or 2 or 3 or 4 or 5 or 6 or 7 described automatic detection shell appearance device, it is characterized in that: it also includes a lower conveyor belt, the conveyor device and the lower conveyor belt are set up and down staggered; The device includes a rejecting seat and an overturning power device. The rejecting seat can be rotatably connected to the frame and is located between the conveying device and the lower conveyor belt. The rejecting seat is provided with a connecting channel, and the connecting channel of the rejecting seat at the conveying station is connected with the conveying device and the lower conveyor belt, and the rejecting seat at the rejecting station and the lower conveyor belt are formed between the rejecting seat and the lower conveyor belt. The rejection gap for qualified products, the turning power device is connected with the processing device.