Online defect detection device for metal lens cone of infrared instrument

Abstract

The invention discloses an infrared instrument metal lens cone online defect detection device, and relates to the field of metal lens cone defect detection.The infrared instrument metal lens cone online defect detection device specifically comprises a partition plate and a base box installed at the bottom of the partition plate, a positioning plate is fixedly installed on the back face of the top of the partition plate, and a heat preservation mechanism used for preventing the metal lens cone from cooling too fast is arranged on the front face of the positioning plate; a heat supply mechanism for heating the metal lens barrel is arranged on one side of the top of the partition plate; the electromagnetic induction heater is used for rapidly heating the metal lens barrel, and a hot air flow inner wall blowing heat dissipation mechanism is combined, so that the problem of detection errors caused by uneven heat dissipation of the inner wall and the outer wall of the metal lens barrel is effectively solved, and particularly, the capability of detecting internal inclusion and welding defects is improved; the thermal shock damage caused by direct contact of cold air is avoided in a hot air flow heat dissipation mode, the quality of the lens barrel is protected, in addition, through the synergistic effect of the heat preservation mechanism and the shielding unit, the heat dissipation process of the metal lens barrel is further controlled, and the stability of the detection environment is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of metal lens barrel defect detection, and more particularly to an on-line defect detection device for an infrared instrument metal lens barrel. Background Art

[0002] Infrared instrument metal barrel defect detection is a highly efficient method that combines infrared thermal imaging technology with automated inspection processes. It is mainly used to identify surface and internal defects in real time during the production process of metal barrels. The technical principle is that metal materials have specific absorption and reflection characteristics for infrared radiation. When infrared light irradiates the surface of the barrel, the defective area will cause local temperature changes due to differences in heat conduction, forming abnormal signals in the thermal image.

[0003] Common infrared instrument metal barrel defect detection uses rapid heat flux injection, taking advantage of the difference in heat conduction rates between defects and normal areas to capture temperature gradients at the moment of heating or in the early cooling stage. However, this method makes it difficult to detect internal inclusions and welding defects in the metal barrel, affecting the efficiency of metal barrel defect detection. At the same time, when performing infrared detection on internal inclusions and welding defects in metal lens barrels, since most metal lens barrels are made of low thermal conductivity materials such as stainless steel, the heat dissipation rates of the inner and outer walls are different, which affects the accuracy of internal defect detection in the metal lens barrel. For this purpose, the present invention provides a solution. Summary of the Invention

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides an online defect detection device for an infrared instrument metal barrel.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: an infrared instrument metal barrel online defect detection device, comprising a partition plate and a base box mounted at the bottom thereof, a positioning plate fixedly mounted on the top back of the partition plate, a heat preservation mechanism for preventing the metal barrel from cooling too quickly provided on the front of the positioning plate, and a heating mechanism for heating the metal barrel provided on one side of the top of the partition plate; The heating mechanism includes a first cylinder fixedly connected to the partition plate, a movable seat is fixedly installed on the protruding end of the first cylinder, the top of the partition plate is slidably connected to the movable seat, and a shielding unit for reducing heat dissipation is provided on the side of the movable seat away from the first cylinder.

[0006] Furthermore, an electromagnetic induction heater is fixedly installed on the top of the movable seat, and cross bars are fixedly installed on the front and rear sides of the movable seat. Rollers are rotatably provided at the ends of the cross bars away from the movable seat.

[0007] Furthermore, a blower is fixedly mounted on the positioning plate, and an output end of the blower is connected to a heat pipe, and the output end of the heat pipe passes through the middle of the electromagnetic induction heater and is arranged toward the inside of the metal barrel.

[0008] Furthermore, the shielding unit includes two first rotating seats fixedly connected to the partition plate, a first rotating rod is rotatably provided on the top of the first rotating seat, and the middle parts of the two first rotating rods are fixedly connected to the partition plate through tension springs.

[0009] Furthermore, two second rotating seats are fixedly connected to the top of the partition plate, the positions of the second rotating seats are staggered with those of the first rotating seats, and a second rotating rod is rotatably provided on the top of the second rotating seat, and the two second rotating rods correspond to the positions of the two rollers respectively.

[0010] Furthermore, a shielding plate is provided above the partition plate, and the top ends of the two first rotating rods and the two second rotating rods are rotatably connected to the bottom of the shielding plate, and the height of the shielding plate is always located below the output end of the heat pipe.

[0011] Furthermore, the heat preservation mechanism includes a second cylinder fixedly connected to the front side of the positioning plate, a shift rod is fixedly mounted on the protruding end of the second cylinder, and a heat preservation cover is rotatably connected to the front side of the positioning plate.

[0012] Furthermore, a groove is provided on the top of the heat preservation cover, the position of the groove corresponds to the position of the metal lens barrel, and the size of the groove is larger than the outer diameter of the metal lens barrel. An adjustment plate is fixedly installed on the side of the heat preservation cover, and a slide groove is provided on the adjustment plate, and the slide groove is movably connected to the shift rod.

[0013] Furthermore, a protective box is provided above the partition plate, a detection port is provided at the front of the protective box, and a protective door for sealing the detection port is provided on one side of the detection port.

[0014] Technical effects and advantages of the present invention: The present invention controls the extended end of the first cylinder to extend to its longest length, so that the electromagnetic induction heater is sleeved on the outer side of the metal lens barrel to quickly heat the metal lens barrel. After the heating of the metal lens barrel is completed, the extended end of the first cylinder is controlled to shrink and reset to its shortest length, and the hot air flow blows the inner wall of the metal lens barrel to dissipate heat, thereby avoiding different heat dissipation rates between the inner and outer walls of the metal lens barrel and preventing the accuracy of internal defect detection from being affected. Since the hot air flow enters the interior of the metal lens barrel, it avoids direct contact with the metal lens barrel by cold air and easily damages it. Moreover, the hot air flow enters the metal lens barrel, while ensuring that the metal lens barrel is cooled, the cooling rate is also avoided too quickly. By controlling the extended end of the second cylinder to extend from the shortest length to the longest length, the heat preservation cover is driven to flip and block the upper side of the metal lens barrel. Due to the shrinkage of the extended end of the first cylinder, the two cross bars cooperate with the corresponding rollers to provide a pulling force for the corresponding second rotating rod to flip, thereby driving the shielding plate to move to the bottom of the metal lens barrel and cooperate with the heat preservation cover to block the outer wall of the metal lens barrel, thereby preventing the external air flow from accelerating the cooling rate of the outer wall of the metal lens barrel. The present invention controls the extension end of the second cylinder to contract and reset to its shortest position after the temperature of the metal lens barrel is stabilized. When the extension end of the second cylinder is at its shortest position, the heat preservation cover does not obstruct the detection end of the infrared detector. The infrared detector performs all-round defect detection on the rotating metal lens barrel, avoiding the difficulty in detecting internal inclusions and welding defects in the existing method of detecting defects in the metal lens barrel of the infrared instrument, which affects the efficiency of the metal lens barrel defect detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a three-dimensional diagram of the overall structure of the present invention.

[0016] Figure 2 It is a three-dimensional schematic diagram of the overall structure of the present invention.

[0017] Figure 3 It is a schematic cross-sectional view of the overall structure of the present invention.

[0018] Figure 4 It is a structural schematic diagram of the heating mechanism of the present invention.

[0019] Figure 5 It is a three-dimensional schematic diagram of the heating mechanism structure of the present invention.

[0020] Figure 6 It is a three-dimensional schematic diagram of the shielding unit structure of the present invention.

[0021] Figure 7 It is a schematic structural diagram of the heat preservation mechanism of the present invention.

[0022] Figure 8 It is a three-dimensional schematic diagram of the heat preservation mechanism structure of the present invention.

[0023] The accompanying drawings are marked as follows: 1. infrared detector; 2. insulation mechanism; 3. positioning plate; 4. heating mechanism; 5. partition plate; 6. motor; 7. clamping tool; 8. mounting frame; 21. adjustment plate; 22. lever; 23. second cylinder; 24. pin; 25. insulation cover; 26. groove; 41. heat pipe; 42. first cylinder; 43. cross bar; 44. shielding unit; 45. movable seat; 46. electromagnetic induction heater; 47. blower; 48. roller; 441. second rotating rod; 442. second rotating seat; 443. first rotating seat; 444. tension spring; 445. first rotating rod; 446. shielding plate; 101. base box; 102. protective box; 103. detection port; 104. protective door. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] Example 1: Please refer to Figures 1-8 As shown in the figure, since most metal lens barrels are made of low thermal conductivity materials such as stainless steel, the heat dissipation rate of the inner and outer walls is different, which affects the accuracy of internal defect detection of the metal lens barrel. This problem can be solved by the following solution: In this embodiment, an infrared instrument metal lens barrel online defect detection device includes a partition plate 5 and a base box 101 mounted at the bottom thereof. A positioning plate 3 is fixedly mounted on the top back of the partition plate 5. A heat preservation mechanism 2 is provided on the front of the positioning plate 3 to prevent the metal lens barrel from cooling too quickly. A heating mechanism 4 is provided on one side of the top of the partition plate 5 to heat the metal lens barrel. See also Figure 1 As shown, a protective box 102 for protecting the components is provided above the partition plate 5. An inspection port 103 is provided at the front of the protective box 102. A transparent protective door 104 is provided on one side of the inspection port 103 to seal the inspection port 103. When inspecting, the metal lens barrel enters the interior of the protective box 102 through the inspection port 103 for inspection. See also Figure 3 and Figure 4 As shown, the heating mechanism 4 includes a first cylinder 42 fixedly connected to the partition plate 5. The first cylinder 42 is arranged horizontally, and a movable base 45 is fixedly installed on the protruding end of the first cylinder 42. The top of the partition plate 5 is slidably connected to the movable base 45 via a guide rail. A shielding unit 44 for reducing heat dissipation is provided on the side of the movable base 45 away from the first cylinder 42. See also Figure 4 and Figure 5 As shown, an electromagnetic induction heater 46 is fixedly installed on the top of the movable seat 45. The electromagnetic induction heater 46 is a prior art. A cross bar 43 is fixedly installed on both the front and rear sides of the movable seat 45. The end of the cross bar 43 away from the movable seat 45 is rotatably provided with a roller 48. See also Figure 5 As shown, a blower 47 is fixedly mounted on the positioning plate 3, and the output end of the blower 47 is connected to the heat pipe 41, and the output end of the heat pipe 41 passes through the middle of the electromagnetic induction heater 46 and is arranged toward the inside of the metal barrel; See also Figure 4 and Figure 6 As shown, the shielding unit 44 includes two first rotating seats 443 fixedly connected to the partition plate 5, and a first rotating rod 445 is rotatably provided on the top of the first rotating seat 443. The middle parts of the two first rotating rods 445 are fixedly connected to the partition plate 5 through tension springs 444; See also Figure 5 and Figure 6 As shown, two second rotating seats 442 are fixedly connected to the top of the partition plate 5. The positions of the second rotating seats 442 are staggered with those of the first rotating seats 443. A second rotating rod 441 is rotatably provided on the top of the second rotating seat 442. The two second rotating rods 441 correspond to the positions of the two rollers 48 respectively. See also Figure 5 and Figure 6 As shown, a shielding plate 446 is provided above the partition plate 5, and the top ends of the two first rotating rods 445 and the two second rotating rods 441 are rotatably connected to the bottom of the shielding plate 446, and the height of the shielding plate 446 is always located below the output end of the heat pipe 41; Then, by controlling the extended end of the first cylinder 42 to extend to the longest, the electromagnetic induction heater 46 is sleeved on the outer side of the metal lens barrel, and the metal lens barrel is quickly heated. During this process, due to the tension of the tension spring 444, the baffle plate 446 is moved to the bottom of the clamping tool 7, so as to prevent the baffle plate 446 from obstructing the movement of the movable seat 45. After the heating of the metal lens barrel is completed, the extended end of the first cylinder 42 is controlled to shrink and reset to the shortest, and the electromagnetic induction heater 46 is used to heat the heat pipe 41. The blower 47 is turned on to make the hot air flow blow the inner wall of the metal lens barrel to dissipate heat, so as to avoid different heat dissipation speeds between the inner and outer walls of the metal lens barrel, and prevent the accuracy of the internal defect detection from being affected. Since it is the hot air that enters the interior of the metal lens barrel, the cold air is prevented from directly contacting the metal lens barrel and causing damage to it. Moreover, the hot air enters the metal lens barrel, which ensures that the metal lens barrel is cooled while also preventing it from cooling down too quickly. By controlling the extension of the protruding end of the second cylinder 23 from the shortest to the longest, the heat preservation cover 25 is driven to flip over and block the top of the metal lens barrel. Since the protruding end of the first cylinder 42 contracts, the two cross bars 43 cooperate with the corresponding rollers 48 to provide a flipping pulling force to the corresponding second rotating rods 441, driving the shielding plate 446 to move to the bottom of the metal lens barrel, cooperating with the heat preservation cover 25 to block the outer wall of the metal lens barrel, thereby preventing the external airflow from accelerating the cooling speed of the outer wall of the metal lens barrel. Example 2: Please refer to Figure 3 and Figure 7 As shown in the figure, defect detection for the infrared instrument metal barrel is performed through rapid heat flow injection. This method is difficult to detect internal inclusions and welding defects in the metal barrel, which affects its defect detection efficiency. The following solution can be used to solve this problem. The heat preservation mechanism 2 includes a second cylinder 23 fixedly connected to the front of the positioning plate 3. The second cylinder 23 is arranged horizontally, and a lever 22 is fixedly installed on the protruding end of the second cylinder 23. The front of the positioning plate 3 is also rotatably connected to a heat preservation cover 25 via a pin 24. See also Figure 7 and Figure 8 As shown, a groove 26 is formed on the top of the heat-insulating cover 25. The position of the groove 26 corresponds to the position of the metal lens barrel, and the size of the groove 26 is larger than the outer diameter of the metal lens barrel. An adjustment plate 21 is fixedly mounted on the side of the heat-insulating cover 25. The adjustment plate 21 has a slide groove formed on it, which is movably connected to the lever 22. After the temperature of the metal lens barrel is stabilized, the extended end of the second cylinder 23 is controlled to retract and reset to the shortest position. When the extended end of the second cylinder 23 is at the shortest position, the heat preservation cover 25 does not obstruct the detection end of the infrared detector 1. The infrared detector 1 performs a full range of defect detection on the rotating metal lens barrel, avoiding the difficulty of detecting internal inclusions and welding defects in the existing method of detecting defects on the metal lens barrel of the infrared instrument, which affects the efficiency of the metal lens barrel defect detection. See also Figure 1 、 2 As shown, a mounting bracket 8 is fixedly mounted on the top of the partition plate 5 away from the first cylinder 42, and a motor 6 is fixedly mounted on the mounting bracket 8. The output end of the motor 6 movably passes through the mounting bracket 8 and is fixedly connected to a clamping fixture 7 for clamping the metal lens barrel. The clamping fixture 7 is a prior art. See also Figure 1 、 Figure 2 and Figure 3As shown, an infrared detector 1 for detecting defects on the metal lens barrel is fixedly installed on the top of the front of the positioning plate 3. The infrared detector 1 is a prior art, and the detection end of the infrared detector 1 is set toward the metal lens barrel; In the present invention, it can be seen from the combination of Example 1 and Example 2 that: By utilizing the electromagnetic induction heater 46 to quickly heat the metal lens barrel, and combining it with the heat dissipation mechanism of blowing air on the inner wall of the hot air flow, the problem of detection error caused by uneven heat dissipation on the inner and outer walls of the metal lens barrel is effectively solved, and the detection capability of internal inclusions and welding defects is especially improved. At the same time, the heat dissipation method of the hot air flow avoids thermal shock damage caused by direct contact with cold air, thereby protecting the quality of the lens barrel. In addition, through the coordinated action of the heat preservation mechanism 2 and the shielding unit 44, the heat dissipation process of the metal lens barrel is further controlled, thereby ensuring the stability of the detection environment.

[0026] Working principle: First, the end of the metal lens barrel is clamped and fixed by the clamping fixture 7, and then the motor 6 is turned on, so that the clamping fixture 7 drives the metal lens barrel to rotate, so that the infrared detector 1 can detect defects in all directions. By controlling the extended end of the first cylinder 42 to extend to its maximum length, the electromagnetic induction heater 46 is sleeved on the outside of the metal lens barrel, and then the electromagnetic induction heater 46 is turned on to quickly heat the metal lens barrel. During this process, due to the tension of the tension spring 444, the first rotating rod 445 and the second rotating rod 441 are flipped at the same time. At this time, the baffle 446 moves to the bottom of the clamping tool 7 to prevent the baffle 446 from hindering the movement of the movable seat 45. After the heating of the metal lens barrel is completed, the extended end of the first cylinder 42 is controlled to retract and reset. To the shortest, the electromagnetic induction heater 46 heats the heat conducting tube 41. At this time, the blower 47 is turned on, so that the air flow is heated when passing through the inside of the heat conducting tube 41. The generated hot air flow blows the inner wall of the metal lens barrel to dissipate heat, thereby avoiding different heat dissipation rates between the inner and outer walls of the metal lens barrel, thereby preventing the accuracy of its internal defect detection from being affected. Since the hot air flow enters the interior of the metal lens barrel, it avoids direct contact with the metal lens barrel by cold air, which may cause damage to it. Moreover, the hot air flow enters the metal lens barrel, which ensures that the metal lens barrel is cooled while also preventing it from cooling too quickly. After the extended end of the first cylinder 42 is retracted and reset, the extended end of the second cylinder 23 is controlled to extend from the shortest to the longest, so that the lever 22 slides in the slide groove, driving the heat preservation cover 25 to flip and block the upper part of the metal lens barrel. At this time, the end of the metal lens barrel is located in the groove 26. Due to the contraction of the extended end of the first cylinder 42, the two cross bars 43 cooperate with the corresponding rollers 48 to provide a flipping pulling force to the corresponding second rotating rod 441, thereby driving the shielding plate 446 to move to the lower part of the metal lens barrel, cooperating with the heat preservation cover 25 to cover the outer surface of the metal lens barrel. The wall is blocked to prevent external airflow from accelerating the cooling rate of the outer wall of the metal lens barrel. After the temperature of the metal lens barrel is stabilized, the extended end of the second cylinder 23 is controlled to retract and reset to the shortest. When the extended end of the second cylinder 23 is at the shortest, the thermal insulation cover 25 does not hinder the detection end of the infrared detector 1. The infrared detector 1 is used to perform all-round defect detection on the rotating metal lens barrel, avoiding the existing method of detecting defects in the metal lens barrel of the infrared instrument, which is difficult to detect its internal inclusions and welding defects, affecting the efficiency of the metal lens barrel defect detection.

[0027] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. An infrared instrument metal barrel online defect detection device, comprising a partition plate (5) and a base box (101) mounted at the bottom thereof, wherein a positioning plate (3) is fixedly mounted on the top and back of the partition plate (5), characterized in that: A heat preservation mechanism (2) for preventing the metal lens barrel from cooling too quickly is provided on the front of the positioning plate (3), and a heating mechanism (4) for heating the metal lens barrel is provided on one side of the top of the partition plate (5); The heating mechanism (4) comprises a first cylinder (42) fixedly connected to a partition plate (5); a movable seat (45) is fixedly mounted on an extended end of the first cylinder (42); the top of the partition plate (5) is slidably connected to the movable seat (45); and a shielding unit (44) for reducing heat dissipation is provided on a side of the movable seat (45) away from the first cylinder (42).

2. The infrared instrument metal barrel online defect detection device according to claim 1, characterized in that: An electromagnetic induction heater (46) is fixedly installed on the top of the movable seat (45), and cross bars (43) are fixedly installed on both the front and rear sides of the movable seat (45). The end of the cross bar (43) away from the movable seat (45) is rotatably provided with a roller (48).

3. The infrared instrument metal barrel online defect detection device according to claim 2, characterized in that: A blower (47) is fixedly mounted on the positioning plate (3), and the output end of the blower (47) is connected to a heat conducting pipe (41). The output end of the heat conducting pipe (41) passes through the middle of the electromagnetic induction heater (46) and is arranged toward the interior of the metal lens barrel.

4. The infrared instrument metal barrel online defect detection device according to claim 3, characterized in that: The shielding unit (44) comprises two first rotating seats (443) fixedly connected to the partition plate (5); a first rotating rod (445) is rotatably provided at the top of the first rotating seat (443); and the middle portions of the two first rotating rods (445) are fixedly connected to the partition plate (5) via tension springs (444).

5. The infrared instrument metal barrel online defect detection device according to claim 4, characterized in that: Two second rotating seats (442) are fixedly connected to the top of the partition plate (5), the position of the second rotating seat (442) is staggered with the position of the first rotating seat (443), and a second rotating rod (441) is rotatably provided on the top of the second rotating seat (442), and the two second rotating rods (441) correspond to the positions of the two rollers (48) respectively.

6. The infrared instrument metal barrel online defect detection device according to claim 5, characterized in that: A shielding plate (446) is provided above the partition plate (5), and the top ends of the two first rotating rods (445) and the two second rotating rods (441) are rotatably connected to the bottom of the shielding plate (446). The height of the shielding plate (446) is always located below the output end of the heat conducting pipe (41).

7. The infrared instrument metal barrel online defect detection device according to claim 1, characterized in that: The heat preservation mechanism (2) comprises a second cylinder (23) fixedly connected to the front face of the positioning plate (3), a lever (22) being fixedly mounted on the protruding end of the second cylinder (23), and a heat preservation cover (25) being rotatably connected to the front face of the positioning plate (3).

8. The infrared instrument metal barrel online defect detection device according to claim 7, characterized in that: A groove (26) is provided on the top of the heat-insulating cover (25), the position of the groove (26) corresponds to the position of the metal lens barrel, and the size of the groove (26) is larger than the outer diameter of the metal lens barrel. An adjustment plate (21) is fixedly mounted on the side of the heat-insulating cover (25), and a slide groove is provided on the adjustment plate (21), and the slide groove is movably connected to the shifting rod (22).

9. The infrared instrument metal barrel online defect detection device according to claim 1, characterized in that: A protective box (102) is provided above the partition plate (5), a detection opening (103) is provided at the front of the protective box (102), and a protective door (104) is provided on one side of the detection opening (103) to seal the detection opening (103).

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