Search

CN-121994812-A - Glass bottle opening crack detection device and using method thereof

CN121994812ACN 121994812 ACN121994812 ACN 121994812ACN-121994812-A

Abstract

The invention discloses a glass bottle opening crack detection device and a use method thereof, and relates to the technical field of crack detection, wherein the device comprises a mounting frame, a three-jaw chuck is arranged at the bottom of the mounting frame and used for clamping a glass bottle; the rotary type detecting device is connected to the bottom of the lifting device. According to the invention, the optical detection unit is driven to rotate when the lifting device is downwards moved to be inserted into the bottle mouth, images of different angles of the bottle mouth are collected, the limitation that the shooting angles of annular fixed industrial cameras and the included angles among the cameras are fixed in the prior art is broken, the whole-circle image collection of the bottle mouth can be realized without relying on the layout of a plurality of groups of fixed cameras, the hardware investment of a plurality of groups of industrial cameras and matched mounting structures is reduced, the manufacturing cost of equipment is reduced, meanwhile, the detection blind areas are eliminated, the crack defects of various angles and edge details of the bottle mouth are conveniently captured, and the missing detection probability is reduced.

Inventors

  • HU WEI
  • XIE ZHIJIAN
  • LUO XIN

Assignees

  • 鼎盛(广东)玻璃科技有限公司

Dates

Publication Date
20260508
Application Date
20260227

Claims (10)

  1. 1. The utility model provides a glass bottleneck crack detection device which characterized in that includes: The glass bottle clamping device comprises a mounting frame (100), wherein a three-jaw chuck is arranged at the bottom of the mounting frame (100) and used for clamping a glass bottle; the lifting device (200) is arranged at the top of the mounting frame (100); and the rotation type detection device (300), wherein the rotation type detection device (300) is connected to the bottom of the lifting device (200).
  2. 2. The glass finish crack detection device according to claim 1, wherein the lifting device (200) comprises: The air cylinder (201), the air cylinder (201) is fixedly installed on the top of the installation frame (100); the lifting plate (202) is in transmission connection with the output end of the air cylinder (201); The guide rod (203), guide rod (203) fixed mounting is in the upper surface of lifter plate (202), guide rod (203) and the top slip of mounting bracket (100) are connected in a penetrating way.
  3. 3. The glass finish crack detection device according to claim 1, wherein the rotary detection device (300) comprises: an elastic telescopic mechanism (301), wherein the elastic telescopic mechanism (301) is connected to the lower surface of the lifting plate (202); The mounting seat (302), the said mounting seat (302) connects to the bottom of the elastic telescopic machanism (301); The elastic toggle mechanism (303), the elastic toggle mechanism (303) is slidably arranged in the mounting seat (302); the adjusting mechanism (304) is connected between the elastic toggle mechanism (303) and the elastic telescopic mechanism (301); The one-way locking mechanism (305), the one-way locking mechanism (305) is arranged at the top of the mounting seat (302), and one end of the one-way locking mechanism (305) is connected with the elastic telescopic mechanism (301); The unidirectional rack (306), the unidirectional rack (306) is arranged at the top of the elastic toggle mechanism (303), and the unidirectional locking mechanism (305) is used for unidirectional limiting of the unidirectional rack (306); The optical detection mechanism (307), the optical detection mechanism (307) is rotatably connected to the bottom of the mounting seat (302), and the elastic toggle mechanism (303) is used for toggling and rotating the optical detection mechanism (307).
  4. 4. A glass finish crack detection device as claimed in claim 3, characterized in that the elastic telescopic mechanism (301) comprises: a first sleeve (311), wherein the first sleeve (311) is fixedly arranged on the lower surface of the lifting plate (202); The top of the telescopic rod (312) is connected with the bottom of the first sleeve (311) in a sliding penetrating way, the bottom of the telescopic rod (312) is fixedly connected with the mounting seat (302), and the telescopic rod (312) is arranged in a T shape; the first spring (313) is movably arranged in the first sleeve (311), and the first spring (313) is used for elastically supporting the telescopic rod (312).
  5. 5. A glass finish crack detection device as in claim 3, wherein the elastic toggle mechanism (303) comprises: a rack plate (331), wherein the rack plate (331) is slidably arranged inside the mounting seat (302); the penetrating rods (332) are symmetrically connected to two ends of the rack plate (331), and the penetrating rods (332) are connected with the end parts of the mounting seats (302) in a sliding penetrating manner; and the second spring (333) is movably sleeved outside one of the penetrating rods (332), and the second spring (333) is used for elastically supporting the rack plate (331).
  6. 6. A glass finish crack detection device as in claim 3, wherein the adjustment mechanism (304) comprises: The sliding strip (341) is fixedly connected with the rack plate (331) at the bottom of the sliding strip (341), the sliding strip (341) is connected with the top of the mounting seat (302) in a sliding and penetrating mode, and a first inclined plane is formed in the top of the sliding strip (341); the extrusion block (342), extrusion block (342) fixed mounting is in the front of first sleeve (311), the second inclined plane has been seted up at the top of draw runner (341), first inclined plane and second inclined plane mutually support.
  7. 7. A glass finish crack detection device according to claim 3, characterized in that the unidirectional locking mechanism (305) comprises: the second sleeve (351) is fixedly connected to the top of the mounting seat (302); the stretching rod (352) is connected with the top of the second sleeve (351) in a sliding penetrating mode, and the stretching rod (352) is arranged in a T shape; The unidirectional latch (353) is connected to the bottom end of the stretching rod (352), and the unidirectional latch (353) is connected with the mounting seat (302) in a sliding penetrating way; And the third spring (354) is movably sleeved outside the stretching rod (352).
  8. 8. The glass finish crack detection device according to claim 7, wherein the one-way locking mechanism (305) further comprises: And one end of the traction rope (355) is connected with the top of the stretching rod (352), and the other end of the traction rope (355) is fixedly connected with the first sleeve (311).
  9. 9. A glass finish crack detection device as claimed in claim 3, characterized in that the optical detection means (307) comprise: a rotation shaft (371), wherein the rotation shaft (371) is rotatably connected with the mounting seat (302) through a bearing; The gear (372) is fixedly sleeved outside the rotating shaft (371), and the gear (372) is in meshed connection with the rack plate (331); the rotating seat (373), the said rotating seat (373) connects to the bottom of the rotating shaft (371), the said rotating seat (373) rotates and connects with mounting seat (302) through the bearing; And an optical detection unit (374), wherein the optical detection unit (374) is fixedly arranged on the rotating seat (373).
  10. 10. A glass bottle mouth crack detection method, characterized in that the detection method comprises a glass bottle mouth crack detection device as claimed in any one of claims 1-9, and specifically comprises the following steps: S1, firstly placing a glass bottle on a three-jaw chuck, clamping and fixing the glass bottle through the three-jaw chuck, driving a rotary detection device (300) to move downwards under the limit of a guide rod (203) by the operation of an air cylinder (201), enabling a rotary seat (373) to be inserted into the bottle mouth of the glass bottle, then continuing to operate by the air cylinder (201), enabling an installation seat (302) to compress and fix the bottle mouth, simultaneously, realizing the whole shortening movement of an elastic telescopic mechanism (301) through the sliding insertion between a first sleeve (311) and a telescopic rod (312), in the process, continuously driving a pressing block (342) to move downwards, conveniently adjusting the acting force of the sliding block (341) by the mutual matching between a second inclined plane of the pressing block (342) and the first inclined plane of the sliding block (341), enabling the vertical movement of the pressing block (342) to be used as power for pushing the horizontal movement of the sliding block (341), enabling the sliding block (331) to be pushed by the sliding force between the inserting rod (332) and the installation seat (302), enabling the sliding block (331) to move downwards along the direction of a fixed gear (331) to be matched with a gear (331) in a linear way, and enabling the sliding block (331) to move towards a gear (331) in a direction of the sliding direction, the optical detection unit (374) is driven to circumferentially rotate by the rotating seat (373); S2, collecting images of different angles of the bottle mouth through rotation of an optical detection unit (374), transmitting the images to a processor through a collecting card, extracting crack core features through an image segmentation and edge extraction algorithm, and then completing crack identification through a threshold judgment logic, wherein the specific judgment flow is as follows: S21, determining according to historical operation data of equipment, normal structure parameters of glass bottle openings with different specifications and crack defect sample data, respectively setting classification threshold values for four core features, and realizing multi-dimensional accurate judgment: If the variation of any core feature is larger than the threshold A, judging that the crack is obvious, and immediately triggering a disqualified product sorting signal; If the variation is between the threshold A and the threshold B, judging that the device is a slight crack or a suspected crack, entering a key monitoring state, controlling an optical detection unit (374) to perform secondary rotation acquisition on the area, and simultaneously starting the fine adjustment of the brightness of the light-compensating light source, and improving the definition of the image to review; If the variation is between the threshold B and the threshold C, judging that the glass bottle is suspected to be defective, recording the coordinates and the characteristic data of the region, and incorporating the region into a batch detection traceable file, wherein the subsequent batch strengthens the detection of the region for the glass bottle with the same specification; if the variation is smaller than the threshold C, judging that the bottle mouth is normal and is free of defects; s22, when the equipment is started for the first time or the specification of the glass bottle is changed, adopting a loose threshold range to avoid misjudgment caused by unstable operation of the equipment and specification adaptation deviation; Gradually tightening the threshold value along with the increase of the continuous operation time of the equipment until reaching the standard threshold value range, and balancing the detection sensitivity and the misjudgment rate; The threshold is dynamically calibrated according to working conditions, namely, the gray contrast related threshold is automatically widened according to special working conditions such as low temperature, high humidity and dust, misjudgment caused by environmental interference is avoided, and the threshold of a corresponding area is automatically tightened according to a micro deformation early warning area, so that the hidden crack recognition precision is improved.

Description

Glass bottle opening crack detection device and using method thereof Technical Field The invention relates to the technical field of crack detection, in particular to a glass bottle opening crack detection device and a using method thereof. Background The glass bottle is widely applied to various fields such as food and beverage, medical preparation, daily chemical products and the like due to the characteristics of good tightness, no toxicity or smell, strong chemical stability and the like, and the glass bottle is required to be matched with glass bottle mouths with various diameter specifications in different scenes. The bottleneck is as the key sealed joint position of glass bottle, and the structure is weak relatively, easily produces the crack in production, transportation, directly influences product leakproofness and safety in utilization, consequently glass bottleneck crack detection is the core link of production and delivery inspection, and needs to satisfy the full-coverage detection demand of different diameter specification bottleneck, and is higher to the commonality and the comprehensive requirement of detection. At present, the mainstream mode of optical detection of glass bottleneck cracks is to annularly arrange a plurality of groups of industrial cameras, collect bottleneck images through fixed-point photographing, and then finish crack detection by combining an image recognition algorithm. In the detection mode, the installation positions of the groups of industrial cameras are fixed, the shooting angles cannot be adjusted, the shooting included angles among the groups of cameras are also fixed, and the detection coverage range of the detection mode can only be matched with the glass bottle mouth with specific diameter specifications. When the bottle mouth with various diameter specifications is matched, an obvious detection blind area is easy to form, when the bottle mouth with small diameter is matched, the shooting range of the camera is overlapped, so that detection redundancy is caused, meanwhile, edge details of the bottle mouth can still be omitted, when the bottle mouth with large diameter is matched, an uncovered gap exists between the cameras due to the fixed included angle, full-coverage imaging of the whole periphery of the bottle mouth cannot be realized, crack defects at the gap are difficult to capture, and the detection omission risk is high. Meanwhile, most of the equipment is designed for adapting to fixed specifications, the universality is poor, the camera module is required to be debugged again or replaced when the specification of the bottle mouth is replaced and detected, the efficiency is low, and the full-coverage detection requirement of the bottle mouth with multiple specifications in large-scale production cannot be met. Disclosure of Invention The invention aims to provide a glass bottle opening crack detection device and a using method thereof, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme that the glass bottle opening crack detection device comprises: the glass bottle clamping device comprises a mounting frame, wherein a three-jaw chuck is arranged at the bottom of the mounting frame and used for clamping a glass bottle; the lifting device is arranged at the top of the mounting frame; the rotary detection device is connected to the bottom of the lifting device. Preferably, the lifting device includes: the air cylinder is fixedly arranged at the top of the mounting frame; The lifting plate is in transmission connection with the output end of the air cylinder; the guide rod is fixedly arranged on the upper surface of the lifting plate and is connected with the top of the mounting frame in a sliding penetrating manner. Preferably, the rotation detection device includes: the elastic telescopic mechanism is connected to the lower surface of the lifting plate; The mounting seat is connected to the bottom end of the elastic telescopic mechanism; the elastic toggle mechanism is arranged in the mounting seat in a sliding manner; the adjusting mechanism is connected between the elastic toggle mechanism and the elastic telescopic mechanism; The one-way locking mechanism is arranged at the top of the mounting seat, and one end of the one-way locking mechanism is connected with the elastic telescopic mechanism; the unidirectional rack is arranged at the top of the elastic toggle mechanism, and the unidirectional locking mechanism is used for unidirectional limiting of the unidirectional rack; the optical detection mechanism is rotatably connected to the bottom of the mounting seat, and the elastic toggle mechanism is used for toggling and rotating the optical detection mechanism. Preferably, the elastic telescopic mechanism includes: the first sleeve is fixedly arranged on the lower surface of the lifting plate; The top of the telescopic rod is connected with the bottom o