A diameter defect detection device and method for a glass rod

Abstract

The present application relates to the technical field of glass rod detection, in particular to a diameter defect detection device and method for glass rods. The device comprises a workbench, an upper feeding mechanism, a conveying assembly, a detection assembly and a rejection assembly arranged in sequence above the workbench. The upper feeding mechanism comprises an upper feeding frame arranged above the workbench, and a material guide plate is arranged on the top of the upper feeding frame. The corresponding rod material is blown by the air shower nozzle, which can ensure that the surface of the glass rod entering the detection area of the detection assembly remains clean, avoids impurities adhering to and shielding the rod body profile, prevents impurities from being mistakenly identified as diameter defects, effectively reduces the detection error rate, improves the accuracy of defect detection, and ensures that each rod body is clean. The air shower nozzle corresponding to the glass rod can ensure that each rod body is clean and in place, and there is no situation of incomplete blowing and washing. The adaptive device can detect continuously without additional manual cleaning process, ensuring the detection efficiency of the whole machine.

Description

Technical Field

[0001] This invention relates to the field of glass rod testing technology, and more specifically, to a device and method for detecting diameter defects in glass rods. Background Technology

[0002] During the manufacturing process of glass rods, various defects often arise due to factors such as furnace nozzles, temperature, and environmental cleanliness. These defects include surface scratches, bubbles, air lines, and impurities. These defects severely affect the quality of the rods and the subsequent drawing and manufacturing of electronic fabrics, leading to product downgrading or even scrapping. Currently, manual visual inspection is the primary method. Typically, one operator is responsible for measuring the diameter of a portion of the glass rods at intervals in two directions, while another operator performs manual visual inspection under a high-brightness incandescent lamp to detect surface scratches, bubbles, air lines, impurities, and other defects. The disadvantages of this method are that the diameter is not fully inspected, the real-time performance is poor, and the recording process is cumbersome and difficult to trace. To improve inspection efficiency, defect detection devices are now commonly used for automatic detection.

[0003] However, some problems still exist in the actual use of glass rod testing: 1. When manually feeding a whole bundle of glass rods directly to the feeding station, the number of rods fed at one time can reach hundreds. The rods are stacked and squeezed together. The bottom glass rods are subjected to continuous heavy pressure from the upper material, resulting in significant bending deformation. The maximum bending deflection can reach 60-70mm. The stacked and bent rods form a large frictional resistance with the inner wall of the conveying channel and the material distribution impeller, which affects the testing efficiency.

[0004] 2. In the glass rod inspection process, the diameter measurement and the internal defect detection of the rod are independent of each other. Separate diameter measuring equipment and visual defect detection equipment are required. In actual production, the glass rod must first be transported to the outer diameter measuring equipment to complete the diameter measurement, and then transferred to another visual inspection equipment to carry out imaging detection of defects such as bubbles, air lines, and impurities. The slender glass rods need to go through two loading and unloading and transfer processes. The transportation process is lengthy, which increases the probability of the glass rods being deviated, bumped, or bent during transportation, and increases the scrap loss of the rods.

[0005] Therefore, a device and method for detecting diameter defects in glass rods are proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a device and method for detecting diameter defects in glass rods, so as to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, one of the objectives of this invention is to provide a diameter defect detection device for glass rods, including a worktable, a feeding mechanism, a conveying component, a detection component and a rejection component arranged sequentially above the worktable, the feeding mechanism including a feeding frame arranged above the worktable, a chute plate arranged on the top of the feeding frame, and multiple parallel upper and lower sets of chute plates for the rod to flow sequentially in the channel; Below the chute is a first transmission roller, which is arranged in a horizontal array. The surface of the first transmission roller is provided with a limiting groove that matches the diameter of the glass rod. Below the chute is a material distribution mechanism, which is used to divide the batch of glass rods into equal groups, reduce the pressure on the glass rods below, and divide the entire column of materials into individual rods to be fed into the conveying assembly. The glass rods move at a uniform speed on the surface of the flat roller group. The conveying assembly includes the flat roller group, which is driven to rotate at a uniform speed by the drive assembly. A detection component on one side of the conveying assembly detects the glass rods. The detection component includes a detection machine located on one side of the flat roller group. The detection machine has an XY dual-axis laser head inside, and support rollers are located on both sides of the XY dual-axis laser head. The glass rods that have been detected by the detection component are classified, and defective products are removed by the rejection component.

[0008] As a further improvement to this technical solution, the feeding mechanism also includes a servo motor located on one side of the feeding frame. The output shaft of the servo motor is provided with a belt shaft, and a driven gear shaft is provided on one side of the first transmission roller. A synchronous belt is provided between the belt shaft and the driven gear shaft.

[0009] As a further improvement to this technical solution, the material sorting mechanism includes a rotating motor located below the feeding frame. The output shaft of the rotating motor is provided with a conjugate cam, and a symmetrical separating blade is provided on one side of the conjugate cam. When the conjugate cam rotates, it drives the separating blade to move apart. When the separating blade moves, it groups the glass rods into equal groups.

[0010] As a further improvement to this technical solution, the flat roller group is provided with a vertical frame on the side, and an air shower nozzle is provided on one side of the vertical frame. The air shower nozzle corresponds one-to-one with the moving glass rod, and the dust and impurities on the surface of the rod are blown away by the air shower nozzle during the movement of the rod.

[0011] As a further improvement to this technical solution, a guide horn is provided on one side of the testing machine. The guide horn has a conical structure. The guide horn gathers and deflects the glass rod, so that the rod passes through the laser diameter measuring instrument in the center, thus eliminating the outer diameter measurement error caused by eccentricity.

[0012] As a further improvement to this technical solution, the detection component also includes a defect identification component, which includes an industrial camera and a high-brightness power supply. The industrial camera is arranged at an angle around the rod body and is arranged in an array.

[0013] As a further improvement to this technical solution, the rejection assembly includes a gantry frame, a guide rail at the top of the gantry frame, a movable seat slidably mounted on the surface of the guide rail, cylinders on both sides of the movable seat, a base plate at the bottom of the cylinders, and a robotic arm at the bottom of the base plate. The robotic arm clamps and rejects defective products.

[0014] The second objective of this invention is to provide a method for detecting diameter defects in glass rods, comprising the following steps: S1. The glass filler is manually arranged to ensure that it is arranged in a single layer without cross-cutting on the surface of the chute. S2. Single-layer glass rods are fed one by one in sequence with the feeding mechanism, and multiple groups of materials are fed at the same time. S3. After the material is unloaded, the glass rod is axially conveyed on the surface of the first transmission roller. The glass rod enters the detection component for automatic detection of its axial diameter and internal defects. At the same time, the detection component blows away dust and impurities from the surface of the glass rod. S4. After receiving the defective bar number, the rejection component guides the robotic arm to reject the NG bar in the NG feeding area, and all OK materials enter the normal storage tank for use in the next process.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In this device for detecting diameter defects in glass rods, the output shaft of a rotating motor drives a conjugate cam to rotate. When the conjugate cam rotates, it drives two sets of separating blades to move in opposite directions. The material distribution mechanism diverts and cuts the large batch of stacked glass rods, pre-dividing the bundled material in the feeding area into small bundles of less than 10 rods. Only a small number of glass rods, not exceeding 10 rods, are fed into the first transmission roller below. The material distribution mechanism relies on the self-weight feeding of the inclined chute and uses the channel volume to limit the number of rods discharged at one time, maintaining a small batch of material in the feeding area of ​​the rear material distribution impeller. This avoids heavy stacking and compression of multiple rods from the source, ensuring normal material flow and improving detection efficiency.

[0016] 2. In this diameter defect detection device for glass rods, the corresponding rod material is blown by air shower nozzles, which can ensure that the surface of the glass rod entering the detection area of ​​the detection component remains clean, avoid impurities adhering and obscuring the outline of the rod, and prevent impurities themselves from being misidentified as diameter defects, thereby effectively reducing the detection misjudgment rate and improving the accuracy of defect detection. At the same time, the air shower nozzles corresponding to each glass rod can ensure that each rod is cleaned in place, without any missed blowing or incomplete washing. It is compatible with the continuous detection operation cycle of the device, without the need for additional manual cleaning procedures, thus ensuring the overall detection efficiency of the machine.

[0017] 3. In this diameter defect detection device for glass rods, a defect recognition component is set on one side of the XY dual-axis laser head. After the diameter of the glass rod is detected, its bubble impurities are detected simultaneously, improving the reduction efficiency. At the same time, the industrial cameras arranged in an inclined ring can provide supplementary lighting to the surface of the glass rod from multiple angles. The high-brightness power supply can provide sufficient brightness for the supplementary lighting, enabling the laser diameter measuring instrument to obtain a clear imaging contour. This facilitates the equipment to accurately identify the actual contour boundary of the glass rod and avoids deviations in contour recognition due to insufficient light or lighting angle problems, further improving the accuracy of diameter detection. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the material conveyor structure of the present invention; Figure 3 This is a schematic diagram of the feeding mechanism of the present invention; Figure 4 This is a schematic diagram of the material distribution mechanism of the present invention; Figure 5 This is a schematic diagram of the transmission component structure of the present invention; Figure 6 For the present invention Figure 5 A schematic diagram of the structure at point C; Figure 7 This is a schematic diagram of the rejection component structure of the present invention; Figure 8 This is a front view of the detection component of the present invention.

[0019] The meanings of the labels in the diagram are as follows: 100. Feeding mechanism; 101. Feeding frame; 102. Feeder plate; 103. First transmission roller; 104. Limiting groove; 105. Servo motor; 106. Belt shaft; 107. Synchronous belt; 108. Driven gear shaft; 109. Rotary motor; 110. Conjugate cam; 111. Separator knife.

[0020] 200. Conveying assembly; 201. Flat idler roller assembly; 202. Vertical frame; 203. Air shower nozzle; 300. Inspection component; 301. Inspection machine; 302. XY dual-axis laser head; 303. Guide horn; 304. Support roller; 305. Defect recognition component; 306. Industrial camera; 400. Removal component; 401. Gantry; 402. Guide rail; 403. Moving seat; 404. Cylinder; 405. Base plate; 406. Robotic arm. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] One objective of this invention is to provide a device for detecting diameter defects in glass rods, see reference. Figures 1-8 As shown, the device includes a workbench, above which are sequentially arranged a feeding mechanism 100, a conveying assembly 200, a detection assembly 300, and a rejection assembly 400. The feeding mechanism 100 includes a feeding frame 101 located above the workbench, and a chute 102 is provided at the top of the feeding frame 101. Multiple parallel sets of upper and lower chute 102 allow the rods to flow sequentially within the channel. Below the chute 102, there is a first transmission roller 103. The first transmission roller 103 is arranged in a horizontal array. The surface of the first transmission roller 103 is provided with a limiting groove 104 adapted to the diameter of the glass rod. Below the chute 102, there is a material distribution mechanism. The material distribution mechanism is used to divide the batch of glass rods into equal groups, reduce the pressure on the glass rods below, and divide the entire column of materials into single pieces to be fed into the conveying assembly 200. The glass rods move at a uniform speed on the surface of the flat roller group 201. The conveying assembly 200 includes the flat roller group 201, which is driven to rotate at a uniform speed by the driving assembly. The detection component 300 on one side of the conveying component 200 detects the glass rods. The detection component 300 includes a detection machine 301 on one side of the flat roller group 201. The detection machine 301 is equipped with an XY dual-axis laser head 302. Support rollers 304 are provided on both sides of the XY dual-axis laser head 302. The glass rods that have been detected by the detection component 300 are classified, and defective products are rejected by the rejection component 400.

[0023] To improve feeding stability after the glass rod feeding is completed, the feeding mechanism 100 also includes a servo motor 105 located on one side of the feeding frame 101. The output shaft of the servo motor 105 is provided with a belt shaft 106, and a driven gear shaft 108 is provided on one side of the first transmission roller 103. A synchronous belt 107 is provided between the belt shaft 106 and the driven gear shaft 108. The glass rod material is automatically fed onto the surface of the chute plate 102 and falls onto the surface of the first transmission roller 103. By controlling the output shaft of the servo motor 105 to drive the belt shaft 106 to rotate, and by driving the driven gear shaft 108 to rotate through the synchronous belt 107, the first transmission roller 103 located on one side of the driven gear shaft 108 rotates coaxially, so that the glass rod placed in the limiting groove 104 can move horizontally with the rotation of the first transmission roller 103, thereby improving the stability of feeding and distributing.

[0024] When manually feeding bundles of glass rods directly to the feeding station, the number of rods fed at one time can reach hundreds. The rods are stacked and compressed, and the bottom layer of glass rods undergoes significant bending deformation under the continuous pressure of the upper layer, with a maximum bending deflection of 60-70mm. The stacked and bent rods create significant frictional resistance between themselves and the inner wall of the conveying channel and the distributing impeller, drastically reducing the smoothness of material rolling and easily causing jamming and stagnation. Therefore, the distributing mechanism includes a rotary motor 109 located below the feeding frame 101. The output shaft of the rotary motor 109 is equipped with a conjugate cam 110, and one side of the conjugate cam 110 has symmetrical separating blades 111. When the conjugate cam 110 rotates, it drives the separating blades 111 to move apart. During the movement of 111, glass rods are grouped into equal quantities. After manual feeding of the entire bundle, the output shaft of the control motor 109 drives the conjugate cam 110 to rotate. When the conjugate cam 110 rotates, it drives the two sets of separating blades 111 to move in opposite directions. The material distribution mechanism diverts and cuts the large batch of stacked glass rods, pre-splitting the bundled material in the feeding area into small bundles of less than 10 rods. Only a small number of glass rods, not exceeding 10 rods, are fed into the first transmission roller 103 below. This material distribution mechanism relies on the self-weight feeding of the inclined chute and uses the channel volume to limit the number of rods discharged at one time, maintaining a small batch of material in the feeding area of ​​the rear material distribution impeller. This avoids heavy stacking and compression of multiple rods from the source, ensuring normal material flow and improving detection efficiency.

[0025] During the inspection of glass rods, impurities and dust adhering to their surface can easily lead to misjudgments. Therefore, the flat roller group 201 is provided with a stand 202 on its side, and an air shower nozzle 203 is provided on one side of the stand 202. The air shower nozzle 203 corresponds one-to-one with the moving glass rod. During the movement of the rod, the air shower nozzle 203 blows away dust and impurities from its surface. When the rod passes over the surface of the flat roller group 201 for moving inspection, the air shower nozzle 203 blows air onto the corresponding rod, ensuring that the surface of the glass rod entering the inspection area of ​​the inspection component 300 remains clean. This prevents impurities from adhering and obscuring the rod's outline, and prevents impurities from being misidentified as diameter defects, thereby effectively reducing the misjudgment rate and improving the accuracy of defect detection. At the same time, the air shower nozzle 203 corresponding to each glass rod ensures that each rod is thoroughly cleaned, without any missed or incomplete cleaning. This adapts to the continuous inspection cycle of the device, eliminating the need for additional manual cleaning procedures and ensuring the overall inspection efficiency.

[0026] Because the glass rod is prone to positional deviation during the conveying process due to uneven friction in the conveying channel and deviation in the material feeding position, the center of the rod cannot coincide with the detection reference center of the laser diameter gauge, resulting in the measured diameter data deviating from the actual size and causing measurement errors. Therefore, the detection machine 301 is equipped with a guide horn 303 on one side. The guide horn 303 has a conical structure. The guide horn 303 gathers the offset glass rod, so that the rod passes through the laser diameter gauge in the center, eliminating the outer diameter measurement error caused by eccentricity. Since the guide horn 303 has a conical structure, when the offset glass rod enters the conical channel of the guide horn 303, it will be gradually guided to the detection center position along the conical surface. The rod can be centered and positioned without additional power, thereby adapting to the existing conveying cycle of the device, ensuring that the diameter data measured by the laser diameter gauge is consistent with the actual outer diameter of the glass rod, and further improving the accuracy of diameter defect detection.

[0027] In existing glass rod inspection processes, diameter measurement and internal defect detection are independent, requiring separate diameter measuring and visual defect detection equipment. In actual production, the glass rod must first be transported to an outer diameter measuring device for diameter measurement, and then transferred to another visual inspection device for imaging detection of defects such as bubbles, air lines, and impurities. The slender glass rods require two loading / unloading and transfer processes, resulting in a lengthy transport process that increases the probability of displacement, collisions, and bending during transport, leading to increased material waste. Therefore, the inspection component 300 also includes a defect recognition component 305, which includes an industrial camera 306 and a high-brightness power supply. The industrial cameras 306 are arranged at an angle around the glass rod and are arranged in an array. By setting a defect recognition component 305 on one side of the XY dual-axis laser head 302, the glass rod's bubble impurities are detected simultaneously after the diameter is measured, improving the reduction efficiency. At the same time, the industrial cameras 306 arranged at an angle can provide supplementary lighting to the surface of the glass rod from multiple angles. The high-brightness power supply can provide sufficient brightness for the supplementary lighting, enabling the laser diameter measuring instrument to obtain a clear imaging contour. This facilitates the equipment to accurately identify the actual contour boundary of the glass rod and avoids deviations in contour recognition due to insufficient light or lighting angle issues, further improving the accuracy of diameter measurement.

[0028] When a passing glass rod is detected as a defective product with a diameter defect, it needs to be sorted and rejected. Therefore, the rejection assembly 400 includes a gantry frame 401. The top of the gantry frame 401 is provided with a guide rail 402. A movable seat 403 is slidably mounted on the surface of the guide rail 402. Cylinders 404 are provided on both sides of the movable seat 403. A base plate 405 is provided at the bottom of the cylinders 404. A robotic arm 406 is provided at the bottom of the base plate 405. The robotic arm 406 clamps and rejects defective products (NG). When the detection assembly 300 detects... After a defect is detected, the bar stock is numbered and a signal is sent to the rejection component 400. The moving seat 403 drives the robotic arm 406 to slide along the guide rail 402 to the detection and discharge position. The robotic arm 406 clamps and grabs the defective product through the linkage action of the base plate 405, and moves the defective product from the conveying channel to the defective product collection area. The qualified product (OK) enters the qualified area along the original conveying path to complete the collection. The stable clamping action of the robotic arm 406 can avoid the defective product from falling and bumping, prevent the qualified product from being damaged during the rejection process, and improve the accuracy and stability of the material sorting.

[0029] The robotic arm 406 includes gripper A and gripper B. Both gripper A and gripper B are equipped with corresponding 1, 2, and 3 stopping and feeding positions (the rising and falling are carried out without horizontal movement; position 2 is the material gripping position, and positions 1 and 3 are the feeding positions). State 1: A is in position 1, B is in position 2, and position 3 is empty. At this time, claw A has material, and claw B is empty in position 2 and has just finished grabbing material. When A passes the OK / NG dividing line, it will airdrop the corresponding product. When the airdrop is completed, and B reaches position 2 and has also finished grabbing material, the next state will begin. State 2: Claws A and B need to move to positions 2 and 3 respectively. At this time, there is material on claw B and claw A is empty. When claw B passes the OK / NG dividing line, it will airdrop the corresponding product. After claw A reaches position 2, it will drop down and open its claws to wait for the material to arrive before grabbing it and moving it up.

[0030] The material is released while in the air, and the glass rod is thrown without stopping during horizontal movement, which saves space and improves testing efficiency.

[0031] In practical use, the operator first puts the entire bundle of glass rods to be tested into the chute 102 channel at the top of the feeding frame 101. The glass rods slide down the inclined chute 102 channel by their own gravity and fall into the material distribution mechanism below. The rotating motor 109 of the material distribution mechanism starts, driving the conjugate cam 110 on the output shaft to rotate, driving the symmetrically arranged separator blades 111 to move apart, pre-dividing and cutting the stacked bundles of hundreds of glass rods, separating small bundles of material with a single batch quantity of ≤10 rods and sending them into the first horizontally arranged transmission roller 103 below. The output shaft of the servo motor 105 drives the belt shaft 106 to rotate, which drives multiple driven gear shafts 108 to rotate synchronously through the synchronous belt 107, thereby driving the first transmission roller 103 to rotate coaxially, so that the glass rods in the limiting groove 104 move horizontally with the rotation of the first transmission roller 103. Each glass rod is fed one by one into the uniformly rotating flat support roller group 201, completing the material distribution and feeding process.

[0032] As the glass rod moves at a constant speed with the flat roller group 201, the air shower nozzles 203 on one side of the upright frame 202 spray compressed air to clean the dust and impurities attached to the surface of the glass rod one by one, ensuring that the surface of the rod entering the detection area is clean and avoiding impurities from affecting the detection results. After cleaning, the glass rod enters the detection component 300. The offset rod is guided by the conical channel of the guide horn 303 to automatically center itself, so that the center of the rod coincides with the detection center of the laser diameter gauge, eliminating the measurement error caused by the eccentricity. At the same time, the industrial cameras 306 arranged in an inclined array around the rod are illuminated from multiple directions under the power of high brightness. The industrial cameras 306 simultaneously complete the imaging detection of internal defects in the rod, avoiding the loss caused by secondary transfer of the glass rod.

[0033] After inspection, qualified products enter the finished product storage area directly along the conveyor path. If the inspection determines that the glass rod is a defective product with a diameter defect, the inspection signal is simultaneously sent to the rejection component 400. The moving seat 403 slides along the guide rail 402 to the discharge station, driving the robotic arm 406 to move to the corresponding position of the defective product. The robotic arm 406 is driven by the base plate 405 to complete the clamping and gripping of the defective product, and removes the defective product from the conveyor channel and sends it to the defective product storage area, completing the entire inspection process. The second objective of this invention is to provide a method for detecting diameter defects in glass rods, comprising the following steps; S1. The glass feed material is manually arranged to ensure that it is arranged in a single layer without cross-arrangement on the surface of the feed plate 102; S2. Single-layer glass rods are fed one by one in sequence with the feeding mechanism, and multiple groups of materials are fed at the same time. S3. After the material is unloaded, the glass rod is axially conveyed on the surface of the first transmission roller 103. The glass rod enters the detection component 300 for automatic detection of its axial diameter and internal defects. At the same time, the detection component 300 blows away dust and impurities from the surface of the glass rod. S4. After receiving the defective bar number, the rejection component 400 guides the robotic arm 406 to reject the NG bar in the NG feeding area, and all OK materials enter the normal storage tank for use in the next process.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting diameter defects in glass rods, characterized in that: The system includes a workbench, above which are sequentially arranged a feeding mechanism (100), a conveying assembly (200), a detection assembly (300), and a rejection assembly (400). The feeding mechanism (100) includes a feeding frame (101) located above the workbench. A chute (102) is located at the top of the feeding frame (101). Multiple parallel sets of upper and lower chute plates (102) allow the rods to flow sequentially within the channel. A first transmission roller (103) is located below the chute plate (102). (103) are arranged in a horizontal array. The first transmission roller (103) has a limiting groove (104) adapted to the diameter of the glass rod. The material feeding plate (102) is provided with a material distribution mechanism below it. The material distribution mechanism is used to divide the batch of glass rods into equal groups and divide the entire column of materials into single pieces to be fed into the conveying assembly (200). The glass rods move at a constant speed on the surface of the flat roller group (201). The conveying assembly (200) includes the flat roller group (201). The flat roller group (201) is driven to rotate at a constant speed by the driving assembly. The detection component (300) provided on one side of the conveying component (200) detects the glass rods. The detection component (300) includes a detection machine (301) provided on one side of the flat roller group (201). The detection machine (301) is provided with an XY dual-axis laser head (302) inside. Support rollers (304) are provided on both sides of the XY dual-axis laser head (302). The glass rods that have been detected by the detection component (300) are classified, and defective products are rejected by the rejection component (400).

2. The diameter defect detection device for glass rods according to claim 1, characterized in that: The feeding mechanism (100) also includes a servo motor (105) located on one side of the feeding frame (101). The output shaft of the servo motor (105) is provided with a belt shaft (106), and a driven gear shaft (108) is provided on one side of the first transmission roller (103). A synchronous belt (107) is provided between the belt shaft (106) and the driven gear shaft (108).

3. The diameter defect detection device for glass rods according to claim 2, characterized in that: The material sorting mechanism includes a rotating motor (109) located below the loading frame (101). The output shaft of the rotating motor (109) is provided with a conjugate cam (110). A symmetrical separator (111) is provided on one side of the conjugate cam (110). When the conjugate cam (110) rotates, it drives the separator (111) to move apart. When the separator (111) moves, it groups the glass rods into equal groups.

4. The diameter defect detection device for glass rods according to claim 1, characterized in that: The flat roller group (201) is provided with a stand (202) on the side, and an air shower nozzle (203) is provided on one side of the stand (202). The air shower nozzle (203) corresponds to the moving glass rod one by one. During the movement of the rod, the dust and impurities on its surface are blown away by the air shower nozzle (203).

5. The diameter defect detection device for glass rods according to claim 4, characterized in that: The testing machine (301) is provided with a guide horn (303) on one side. The guide horn (303) is a conical structure. The guide horn (303) gathers the offset glass rod so that the rod passes through the laser diameter measuring instrument in the center, thus eliminating the outer diameter measurement error caused by the eccentricity.

6. The diameter defect detection device for glass rods according to claim 5, characterized in that: The detection component (300) also includes a defect identification component (305), which includes an industrial camera (306) and a high-brightness power supply. The industrial camera (306) is arranged at an angle around the rod body and is arranged in an array.

7. The diameter defect detection device for glass rods according to claim 1, characterized in that: The rejection assembly (400) includes a gantry (401), a guide rail (402) on the top of the gantry (401), a movable seat (403) slidably disposed on the surface of the guide rail (402), cylinders (404) on both sides of the movable seat (403), a base plate (405) at the bottom of the cylinders (404), and a robotic arm (406) at the bottom of the base plate (405). The robotic arm (406) clamps and rejects defective products.

8. A method for detecting diameter defects in glass rods, implemented by the diameter defect detection device for glass rods according to any one of claims 1-7, characterized in that: Includes the following steps; S1. The glass filler is manually arranged so that it is arranged in a single layer without cross-arrangement on the surface of the feed plate (102); S2. Single-layer glass rods are fed one by one in sequence with the feeding mechanism, and multiple groups of materials are fed at the same time. S3. After the glass rod is unloaded, it is axially conveyed on the surface of the first transmission roller (103). The glass rod enters the detection component (300) for automatic detection of its axial diameter and internal defects. At the same time, the detection component (300) blows away dust and impurities on the surface of the glass rod. S4. After receiving the defective bar number, the rejection component (400) guides the robotic arm (406) to reject the NG bar in the NG feeding area, and all OK materials enter the normal storage tank for use in the next process.

Images