CN-122016798-A - Welding line detection device and detection method for igniter

CN122016798ACN 122016798 ACN122016798 ACN 122016798ACN-122016798-A

Abstract

The invention provides a welding line detection device and a detection method of an igniter, comprising a blanking assembly for blanking the igniter in a vibrating way, a beat regulation assembly communicated with a discharging hole at the bottom of the blanking assembly and used for regulating the feeding beat, a sending detection assembly communicated with a discharging hole at the top of the beat regulation assembly, and a welding line detection assembly sleeved on the outer surface of the sending detection assembly and used for detecting the igniter in an image recognition way, wherein an original image is acquired from multiple angles through the exposure time and focal length of a high-resolution industrial camera, then a standard welding line image is acquired, and defect characteristic information of a corrected image is extracted through the defect characteristic extraction of a welding line, after a great number of labeling samples are trained by utilizing an improved CNN model which introduces an attention mechanism, then the defect type is identified and classified through defect recognition and SVM algorithm based on a preset feature vector space, and finally the defect position, the type and the severity are intuitively displayed at a monitoring terminal through a graphical interface.

Inventors

ZHANG YAN
Ren taichang
LI JIANQUAN
WEI WENJIE

Assignees

江西新余国泰特种化工有限责任公司
儒拉玛特自动化技术(苏州)有限公司

Dates

Publication Date: 20260512
Application Date: 20251226

Claims (9)

1. The welding seam detection device of the igniter is characterized by comprising a blanking assembly for blanking the igniter in a vibrating manner, a beat regulation assembly communicated with a discharge hole at the bottom of the blanking assembly and used for regulating feeding beat, a sending detection assembly communicated with a discharge hole at the top of the beat regulation assembly, and a welding seam detection assembly sleeved on the outer surface of the sending detection assembly and used for detecting the igniter in an image recognition manner; The blanking assembly comprises a blanking hopper, a plurality of guide plates which are alternately obliquely arranged in the blanking hopper, a workpiece guide rail arranged at a discharging hole at the bottom of the blanking hopper, a workpiece righting part which is arranged at the discharging hole at the bottom of the blanking hopper in a turnover manner, and a vibrating assembly arranged at the bottom end of the blanking hopper; The workpiece righting part is used for righting overturning the ignition tool which is positioned at the discharge hole of the discharging hopper and does not accord with the conveying position, uniformly faces to the workpiece guide rail, vertically pushes the ignition tool to one side close to or far from the inspection assembly one by one according to a preset beat through the beat regulating assembly, and finally transversely pushes the ignition tool to the welding seam detection assembly for detection through the inspection assembly.
2. The device for detecting the welding seam of the igniter of claim 1, wherein the beat control assembly comprises a base arranged at the bottom, a telescopic cylinder arranged at the top end of the base, an output rod arranged at the output end of the top of the telescopic cylinder, and a lifting assembly arranged at the top end of the output rod and used for pushing the igniter towards the side close to or far from the inspection assembly.
3. The welding seam detection device of the igniter of claim 2, wherein the lifting assembly comprises a workpiece lifting part for wrapping the igniter, a spiral part embedded at the top of the workpiece lifting part for guiding the igniter to be adjusted in an axial positive position, and a first discharging groove arranged on one side of the workpiece lifting part away from the workpiece guide rail.
4. The welding seam detection device of the igniter of claim 3, wherein the blanking assembly further comprises an electrostatic discharge guide part arranged on the outer surface of the blanking hopper in a surrounding manner, and the vibration assembly comprises at least two vibration damping tables for bearing the blanking hopper, a vibration damping part arranged between the two vibration damping tables, and at least one vibration motor arranged at the top end of the vibration damping tables, so that vibration blanking of the igniter in the blanking hopper is realized.
5. The welding seam detection device of the igniter of claim 4, wherein the inspection assembly comprises a feeding guide rail communicated with the top end of the beat control assembly, an ion fan arranged on the feeding guide rail and close to one side of the beat control assembly, a sliding feeding piece arranged on the feeding guide rail in a sliding manner and used for pushing the igniter, an inspection guide rail arranged on one side of the feeding guide rail far away from the ion fan, and a second discharge chute arranged on one side of the inspection guide rail far away from the feeding guide rail, wherein the inner side of the inspection guide rail is matched with the outer surface of the igniter.
6. The welding seam detection device of the ignition tool according to claim 5, wherein the welding seam detection assembly comprises a detection box body communicated with the inspection assembly, a driving motor arranged at the top of the detection box body, an information acquisition component arranged at the output end of the driving motor and positioned in the detection box body and used for acquiring welding seam information of the ignition tool, at least one mechanical arm arranged on the inner wall of the detection box body, and a processor embedded in the detection box body and used for information processing and equipment control.
7. The welding seam detection device of an igniter of claim 6, wherein said igniter includes a fuel compartment for containing fuel, a cover for sealing said fuel compartment, at least two electrodes penetrating said cover into said fuel compartment, and a weld for sealing a junction of said fuel compartment and said cover.
8. A control method of a bead detecting device of an igniter, characterized by being used for operating the bead detecting device of an igniter according to any one of claims 1 to 7, the method comprising: acquiring position information of the igniter to be detected through the in-place detection device, and adjusting the light source device in the detection box body based on the position information so as to enhance the image contrast; The method comprises the steps that an information acquisition component circumferentially surrounds and acquires a plurality of original image data of the welding seam part of the igniter along the welding seam part of the igniter, training is carried out on the welding seam image by using a deep learning model based on the original image data, and defect characteristic information of the welding seam is extracted; Based on the extracted defect characteristic information, identifying and classifying defects by using a Support Vector Machine (SVM) classification algorithm, and matching the extracted defect characteristics with a preset characteristic vector space by predefining characteristic vector spaces of different types of defects to determine the types of the defects, and simultaneously, evaluating and classifying the severity of the defects according to parameters such as the geometric size, the shape characteristics and the like of the defects; And displaying the defect identification and classification results on a monitoring terminal through an intuitive graphical interface, clearly marking the position, type and severity of the defects on the welding line, and storing detection result data into a database, wherein the detection result data at least comprises the model, batch, detection time and defect information of the igniter.
9. The control method of the welding line detection device of the igniter is characterized by further comprising the following steps of surrounding the upper welding line part of the igniter along the circumferential direction of the welding line part of the igniter by the information acquisition component and acquiring a plurality of original image data with preset angles of the welding line part of the igniter: Denoising the acquired original image data through a wavelet transformed image denoising algorithm, and reserving edge and texture details of a welding line; The method of combining histogram equalization and contrast stretching is adopted, the overall contrast of the image is improved, a weld joint area is clearer and more distinguishable, then geometric correction is carried out on the image, and image deformation caused by shooting angles and lens distortion is eliminated according to the geometric relation between camera parameters calibrated in advance and a detection tool, so that a corrected standard weld joint image is obtained.

Description

Welding line detection device and detection method for igniter Technical Field The invention relates to the technical field of welding seam detection of ignition tools, in particular to a welding seam detection device and a welding seam detection method of an ignition tool. Background The igniter is a device for igniting gunpowder, propellant or other combustible materials, and is widely applied to the fields of military, industry, automobile safety, fire protection and the like. The ignition device has the core functions of exciting an ignition piece through specific energy forms (such as electric energy, mechanical energy and chemical energy) to generate flame or high-temperature gas so as to ignite main charges, and can be subdivided into an inertial ignition device, namely, an inertial ignition device, an acid ignition device, an isolation device and a baffle plate ignition device, wherein the inertial ignition device utilizes the inertial force generated during the firing of a shell to enable a firing pin to strike a fire cap to ignite a delay explosive column, finally ignites rocket propellants (such as a range extender), the acid ignition device is excited by the chemical energy and is suitable for the ignition requirement under specific environment, and the baffle plate ignition device utilizes the shock wave generated by the upper-stage charge to penetrate a metal baffle plate to trigger the combustion of the lower-stage charge, so that the shell has strong pressure resistance and high safety. The parts of the ignition tool are prepared, including the ignition body (for filling fuel), the sealing cover, the electric ignition head and other core parts, the ignition body is composed of a shell-shaped cover, a moistureproof gasket, a gasket and a copper pipe, in the assembling process, the fuel filling is carried out on the structure by manual or automatic equipment, and then the structure is butted, but in order to further improve the tightness of the ignition tool after the assembly, the sealing welding process is generally carried out at the joint of the ignition body and the sealing cover so as to improve the sealing effect. However, at present, the ignition tool is usually finished by manpower from production and processing to subsequent finished product detection, and part of ignition tool detection flow is also provided, in order to improve detection efficiency, after the ignition tools are arranged through a production line, the ignition tools are taken one by workers on the production line, and then welding seam detection operation is implemented by virtue of own experience of the workers, so that no better improvement is made on manual consumption, meanwhile, the traditional ignition tool transmission production line is limited due to the appearance limitation of the ignition tools, the finished ignition device is also limited to be placed on a conveying belt for conveying, the ignition device cannot be arranged in a sorting mode in the process, inconvenience is caused when workers take the ignition device for detection, misdistribution and collision damage can occur to the ignition device with disordered arrangement, in addition, the traditional manual detection standard is judged only by the experience of the workers, unified standardized detection is not achieved, large differentiation conditions exist in the welding line detection operation of the ignition device, and the detection quality is poor. Disclosure of Invention Based on the above, the invention aims to provide a welding seam detection device and a welding seam detection method of an igniter, so as to fundamentally solve the problems that the welding seam detection device of the existing igniter cannot arrange the igniter in a tidying way, so that workers are inconvenient to take and detect and the arrangement is disordered. The welding seam detection device of the igniter comprises a blanking assembly for blanking the igniter in a vibrating manner, a beat regulation assembly communicated with a discharge hole at the bottom of the blanking assembly and used for regulating feeding beat, a sending detection assembly communicated with a discharge hole at the top of the beat regulation assembly, and a welding seam detection assembly sleeved on the outer surface of the sending detection assembly and used for detecting the igniter in an image recognition manner; The blanking assembly comprises a blanking hopper, a plurality of guide plates which are alternately obliquely arranged in the blanking hopper, a workpiece guide rail arranged at a discharging hole at the bottom of the blanking hopper, a workpiece righting part which is arranged at the discharging hole at the bottom of the blanking hopper in a turnover manner, and a vibrating assembly arranged at the bottom end of the blanking hopper; The workpiece righting part is used for righting overturning the ignition tool which is positioned at the discharge hole of the discharging hop