Search

CN-121972420-A - System and process for detecting stress of lamp shell of exposure lamp

CN121972420ACN 121972420 ACN121972420 ACN 121972420ACN-121972420-A

Abstract

The invention discloses a stress detection system and a stress detection process for a lamp shell of an exposure lamp, and relates to the technical field of production of exposure lamps. The conveying unit comprises a rotary workbench, a plurality of light-transmitting tables for bearing lamp shells to be tested are arranged at the bottom of the rotary workbench, and the detecting unit comprises a feeding module, a stress detecting module, a rejecting module and a discharging module which are sequentially arranged along the rotation direction of the rotary workbench. The stress detection module consists of a polarizer, an analyzer and a high-resolution area array camera, wherein the polarizer, the light transmission platform and the analyzer are sequentially arranged in the light emitting direction of the light source, and the analyzer and the polarizer are orthogonally arranged. According to the exposure lamp shell stress detection system, the traditional static fixed type light transmission table structure is replaced by the combination of the rotary workbench and the light transmission table, and feeding, detection and discharging can be synchronously completed in a single rotation period through rotation, so that the detection efficiency is improved, and the system is more suitable for automatic production.

Inventors

  • SHI XIAO
  • FAN SHENGYUE
  • ZHOU ZHENTAO

Assignees

  • 江苏载曜光电科技有限公司

Dates

Publication Date
20260505
Application Date
20260209

Claims (10)

  1. 1. An exposure lamp housing stress detection system, comprising: The conveying unit comprises a rotary workbench (11), wherein a plurality of equidistant light transmission tables (112) are arranged on the periphery of the table top of the rotary workbench (11), and the light transmission tables (112) are used for bearing and positioning lamp shells to be detected; The detection unit comprises a stress detection module (24), wherein the stress detection module (24) is used for detecting the internal stress distribution of the lamp housing to be detected; The system comprises a processing unit, a screening and classifying module and a PLC (programmable logic controller), wherein the processing unit comprises a visual processing module, a screening and classifying module and the PLC, the screening and classifying module is electrically connected with the visual processing module, and the PLC is electrically connected with the screening and classifying module, a blanking module (26) and a rejecting module (25) respectively; The stress detection module (24) comprises a polarizer, an analyzer and an area array camera, wherein the polarizer and a light transmission shaft of the analyzer are arranged in an orthogonal mode, the area array camera is connected with the analyzer and is used for collecting color images output by the analyzer, the area array camera is electrically connected with the vision processing module, the polarizer, the light transmission table (112) and the analyzer are sequentially arranged along a detection light path, and the detection light path is perpendicular to a rotation plane of the rotary workbench (11).
  2. 2. The stress detection system for the lamp shell of the exposure lamp according to claim 1, wherein the detection unit further comprises a feeding module (21), a rejecting module (25) and a discharging module (26), and the feeding module (21), the stress detection module (24), the rejecting module (25) and the discharging module (26) are sequentially arranged along the rotation direction of the rotary workbench (11); The feeding module (21) is used for grabbing lamp shells to be tested from an upstream conveying line or a storage bin and accurately placing the lamp shells on a light transmission table (112) of the rotary workbench (11), the rejecting module (25) is used for removing unqualified lamp shells from the light transmission table (112) and conveying the unqualified lamp shells into a waste channel, and the discharging module (26) is used for grabbing and transferring the qualified lamp shells from the light transmission table (112) to a downstream conveying line.
  3. 3. The system for detecting stress of a lamp housing of an exposure lamp according to claim 2, wherein the processing unit further comprises a conveying control module, the conveying control module is electrically connected with the PLC, the conveying control module is electrically connected with each execution module of the conveying unit and each execution module in the detection unit, and the conveying control module is used for coordinating indexing positioning of the rotary table (11), feeding/discharging action time sequences, exposure triggering of the stress detection module (24) and response of the rejection actuator.
  4. 4. The stress detection system for a lamp housing of an exposure lamp according to claim 1, wherein the light-transmitting stage (112) is a quartz glass substrate with high light transmittance, and the surface of the light-transmitting stage (112) is subjected to ultra-precise polishing.
  5. 5. The exposure lamp housing stress detection system according to claim 1, wherein a plurality of positioning grooves (111) are uniformly formed in the circumferential direction of a working surface of the rotary table (11), one side of each positioning groove (111) penetrates through the side wall of the rotary table (11), the top surface of each light-transmitting table (112) is fixedly connected with the bottom of the rotary table (11), the light-transmitting tables (112) are in one-to-one correspondence with the corresponding positioning grooves (111), the light-transmitting tables (112) are located under the corresponding positioning grooves (111), and the notch diameter of each positioning groove (111) is larger than the maximum outer diameter of the lamp housing to be detected.
  6. 6. The exposure lamp housing stress detection system according to claim 2, further comprising an adjusting unit, wherein the adjusting unit comprises a gesture monitoring module (22) and a gesture adjusting execution module (23), the gesture monitoring module (22) and the gesture adjusting execution module (23) are respectively electrically connected with the PLC, the gesture monitoring module (22) and the gesture adjusting execution module (23) are positioned between the feeding module (21) and the stress detection module (24), and the gesture monitoring module (22) and the gesture adjusting execution module (23) are sequentially arranged along the rotation direction of the rotary workbench (11); the gesture monitoring module (22) is used for acquiring a space gesture state signal of the lamp housing to be detected on the light transmission table (112), and the gesture adjustment execution module (23) is used for adjusting the space gesture of the lamp housing to be detected on the light transmission table (112) so that the axis of the lamp housing to be detected is perpendicular to the reference plane of the light transmission table (112).
  7. 7. The exposure lamp housing stress detection system according to claim 6, wherein the processing unit further comprises a feedback control module, the feedback control module is electrically connected with the gesture monitoring module (22) and the PLC controller respectively, the feedback control module is used for receiving the gesture state signal and calculating a six-degree-of-freedom deviation signal between the current gesture and the preset standard gesture of the lamp housing to be detected, and accordingly makes an adjustment command, and the PLC controller can receive the adjustment command and output the adjustment command to the gesture adjustment execution module (23).
  8. 8. The exposure lamp body stress detection system of claim 7, wherein the feedback control module continuously optimizes the attitude correction strategy through a plurality of sample training and online learning.
  9. 9. A detection process for an exposure lamp housing stress detection system according to any one of claims 1 to 8, comprising the steps of: The detection process of the exposure lamp shell stress detection system comprises the following steps: S1, discharging, namely rotating a rotary workbench (11) by 60 degrees, conveying two light-transmitting tables (112) once in each step to synchronously enter a feeding process, suspending rotating the rotary workbench (11), and triggering the rotary workbench (11) to start by a PLC (programmable logic controller) after a feeding module (21) finishes double-station lamp shell placement, and entering the next station; S2, positioning, namely enabling the lamp shell to be tested to enter a posture monitoring station along with a rotary workbench (11), and enabling a posture monitoring module (22) to acquire a space posture state signal and a position information point of the lamp shell to be tested on a light transmission table (112) in real time; S3, correcting, namely, calculating six-degree-of-freedom deviation in real time by a feedback control module according to a pose state signal in the moving process, and generating a closed-loop adjustment instruction, wherein after a lamp shell to be detected enters a pose adjustment station and a rotary table (11) is stopped rotating for 1 second, a pose adjustment execution module (23) executes correction to enable the axis of the lamp shell to be perpendicular to a reference surface of a light transmission table (112), and then a PLC triggers the rotary table (11) to start to enter the next station; S4, detecting that when the rotary table (11) rotates, the stress detection module (24) starts a polarized light imaging system, and after the rotary table (11) rotates to a stress detection station and is suspended for 1 second, the area array camera collects imaging at the polarization analyzer and transmits information of the imaging to the vision processing module; S5, judging that the visual processing module performs object recognition on the color image, judges whether the surface of the color image presents color interference fringes, and converts the result into structured image data; s6, screening, namely triggering a rotary workbench (11) to start by a PLC (programmable logic controller) so that the lamp shell to be tested moves to a rejecting station, triggering a rejecting instruction by the PLC if a disqualified signal is sent out in S5, and taking out the disqualified lamp shell by a rejecting module (25) and placing a waste channel; S7, taking materials, namely triggering a rotary workbench (11) to start by a PLC (programmable logic controller) so that the lamp shell to be tested moves to a blanking station, sending a qualified signal in S5, triggering a taking-out instruction by the PLC, and enabling a blanking module (26) to execute taking-out action so as to stably transfer the qualified lamp shell to a downstream conveying line; s8, repeating the steps S1 to S7 until continuous and uninterrupted full detection flow operation of all the lamp shells of the exposure lamps is completed.
  10. 10. An exposure lamp housing production line is characterized by comprising the exposure lamp housing stress detection system according to any one of claims 1 to 8, and an upstream forming mechanism and a downstream optical coating pretreatment mechanism which are integrated with the exposure lamp housing stress detection system.

Description

System and process for detecting stress of lamp shell of exposure lamp Technical Field The invention relates to the technical field of exposure lamp production, in particular to a system and a process for detecting stress of a lamp shell of an exposure lamp. Background The exposure lamp shell is made of transparent quartz glass or high borosilicate glass material, the inner wall of the exposure lamp shell is smooth, and the requirements of an optical coating process on surface roughness and stress distribution are met, so that the formed lamp shell is required to be subjected to non-contact type quantitative detection on the stress distribution. The existing stress detection technology is also sampling detection, and the mode has low detection efficiency, high omission factor and large detection result discreteness, and cannot meet the technological requirements of all-digital stress qualification judgment on each lamp shell in mass production. Disclosure of Invention The invention aims to solve the technical problems of low efficiency, high omission factor, discrete result and the like of the existing sampling detection mode, and provides a system and a process for detecting the stress of a lamp shell of an exposure lamp. The technical scheme adopted by the invention for solving the technical problems is that the system for detecting the stress of the lamp shell of the exposure lamp comprises: the conveying unit comprises a rotary workbench, wherein a plurality of equidistant light transmission tables are arranged on the periphery of the table top of the rotary workbench, and the light transmission tables are used for bearing and positioning the lamp housing to be tested; The detection unit comprises a stress detection module, wherein the stress detection module is used for detecting the internal stress distribution of the lamp housing to be detected; the stress detection module comprises a polarizer, an analyzer and an area array camera, wherein the polarizer is orthogonally arranged with a light transmission shaft of the analyzer, the area array camera is connected with the analyzer, and the area array camera is used for collecting color images output by the analyzer; The polarizer, the light transmission table and the analyzer are sequentially arranged along a detection light path, and the detection light path is perpendicular to the rotation plane of the rotary workbench; Therefore, the light-transmitting table rotates to the detection station along with the rotary table, the lamp shell to be detected synchronously enters the center of the detection light path along with the light-transmitting table, linear polarized light is output by the polarizer, elliptical polarized light is formed after the linear polarized light is subjected to the double refraction effect of the lamp shell, and then the elliptical polarized light is modulated into stress distribution images through the orthogonally arranged analyzers, and the stress distribution images are captured in real time by the area array camera. The invention realizes continuous and interference-free workpiece carry and image acquisition in a detection light path through the combination of the rotary workbench and the light transmission table and the separation of the polarizer and the light transmission table, and has the advantages of full detection capability and zero omission factor compared with the existing sampling detection mode. The detection unit further comprises a feeding module, a rejecting module and a discharging module, wherein the feeding module, the stress detection module, the rejecting module and the discharging module are sequentially arranged along the rotation direction of the rotary table, the feeding module is used for grabbing a lamp shell to be detected from an upstream conveying line or a storage bin and accurately placing the lamp shell to be detected on a light transmission table of the rotary table, the rejecting module is used for removing the unqualified lamp shell from the light transmission table and conveying the unqualified lamp shell into a waste channel, and the discharging module is used for grabbing the qualified lamp shell from the light transmission table and transferring the qualified lamp shell to a downstream conveying line, so that the feeding module, the stress detection module, the rejecting module and the discharging module form a closed-loop type full-automatic detection assembly line in cooperation with the rotary table, the detection efficiency and the operation beat consistency are improved, and the batch production requirements of automatic and full-scale stress distribution detection are met. Further, the stress detection system of the exposure lamp shell further comprises a processing unit, wherein the processing unit comprises a visual processing module, a screening and classifying module and a PLC (programmable logic controller), the screening and classifying module is electrically connected wit