CN119354928A - A plastic parts transmittance detector - Google Patents
A plastic parts transmittance detector Download PDFInfo
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- CN119354928A CN119354928A CN202411886801.2A CN202411886801A CN119354928A CN 119354928 A CN119354928 A CN 119354928A CN 202411886801 A CN202411886801 A CN 202411886801A CN 119354928 A CN119354928 A CN 119354928A
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- 239000004033 plastic Substances 0.000 title claims abstract description 71
- 238000002834 transmittance Methods 0.000 title claims abstract description 51
- 238000001514 detection method Methods 0.000 claims abstract description 63
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 239000005304 optical glass Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 description 32
- 238000009434 installation Methods 0.000 description 6
- 239000002356 single layer Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/59—Transmissivity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- Analytical Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
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- Pathology (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention relates to the technical field of light transmittance detection, in particular to a plastic part light transmittance detector. Including the detector body, still including bearing, mounting panel, bracing piece, laser emitter, support column etc. the mounting panel passes through the bearing and rotates installs on the testing platform of detector body, and the bracing piece is connected in the mounting panel top, and the bracing piece side is opened there is vertical groove, and laser emitter installs in the bracing piece upper end, and the support column is connected in laser emitter top, opens on the support column has through-hole and guide way. The invention can adapt to plastic parts with various complex shapes through the improved detection platform and the positioning component, particularly for parts with arc or special-shaped surfaces, can detect the light transmittance of the parts under the condition of not damaging the parts, can avoid the problem that the parts are unstable on the detection platform, does not need to cut off the parts to be detected from the parts as samples, saves time and labor, and ensures the representativeness and the accuracy of detection data.
Description
Technical Field
The invention relates to the technical field of light transmittance detection, in particular to a plastic part light transmittance detector.
Background
With the wide application of laser welding technology in various industries, the performance requirements on welding materials are higher and higher, and especially the optical performance, such as light transmittance, becomes one of important indexes for evaluating the quality of the welding materials. The light transmittance not only directly influences the transmission efficiency of laser energy, but also relates to the welding quality and the reliability of finished products, so that the accurate and reliable light transmittance detection method has important significance for the quality control of laser welding.
The existing full-picture laser plastic light transmittance detector mainly adopts laser as a light source, and calculates the light transmittance by measuring the intensity change of the laser after passing through plastic parts. When the device is used, firstly, the plastic part to be detected is placed on the detection platform manually, then laser is controlled to pass through the position to be detected of the plastic part and fall on the detection platform, and the light transmittance of the plastic part can be analyzed through the laser intensity received by the detection platform. However, the detector can only detect single-layer parts with flat surfaces (such as the type A welding condition shown in fig. 1, the second welding piece can be directly put on the detection platform to detect the light transmittance of the top surface of the part), and for parts with arc or special-shaped surfaces, the part cannot be stably placed on the detection platform (such as the type B welding condition and the type C welding condition shown in fig. 1, the second welding piece needs to be vertically turned ninety degrees to be placed on the detection platform to detect the light transmittance of the side surface of the part, and at the moment, the second welding piece is easy to roll), so that the accuracy of a detection result can be affected. In addition, for a part with a specific geometry, such as a ring or a square, when the part is placed on the detection platform to detect the side transmittance, the laser generally passes through the double-layer structure of the part (for example, the case B and the case C shown in fig. 1, when the second welding piece is placed on the detection platform in a state that the second welding piece is turned ninety degrees longitudinally, the laser needs to pass through the double-layer structure of the second welding piece to reach the detection platform), which also affects the accuracy of the final detection result. Therefore, in order to obtain accurate light transmittance data, for the above-mentioned complex-shaped parts, the current method is to manually cut out the part to be detected from the part as a sample for separate detection, which not only increases the workload, but also may cause a difference between the sample and the actual product, thereby affecting the representativeness of the detection.
Disclosure of Invention
In view of the above, the present invention provides a plastic part light transmittance detector, which can overcome the disadvantages that the existing full-screen laser plastic light transmittance detector can only detect the light transmittance of a single-layer part with a flat surface, and for a part with a complex shape, a part to be detected needs to be manually cut off from the part as a sample for separate detection, which not only increases the workload, but also is difficult to ensure the accuracy of detection data.
The utility model provides a plastic parts luminousness detector, including the detector body, still including the bearing, the mounting panel, the bracing piece, laser emitter, the support column, receiver and lifting unit, the mounting panel passes through the bearing to be rotated and installs on the testing platform of detector body, the bracing piece is connected at the mounting panel top, and open the bracing piece side has vertical groove, laser emitter installs in the bracing piece upper end, the support column is connected at laser emitter top, it has through-hole and guide way to open on the support column, through-hole and guide way intercommunication, and the laser beam that laser emitter sent can vertically pass the through-hole, still be equipped with the lifting unit who is used for driving the receiver and goes up and down on the testing platform of detector body, and the receiver is located the laser emitter directly over for receive the laser beam that laser emitter sent.
Further, the lifting assembly comprises a fixed rod, a guide round rod, a mounting block, a reinforcing rod and a first electric push rod, wherein the fixed rod is connected to the top of the mounting plate, the guide round rod is slidably connected to the fixed rod, the mounting block is connected to the upper end of the guide round rod, the reinforcing rod is connected to the side face of the mounting block, the end part of the reinforcing rod is fixedly connected with the receiver, the first electric push rod is connected to the top of the mounting plate, and the telescopic rod of the first electric push rod slidably penetrates through the top of the fixed rod and is connected with the bottom of the mounting block.
Further, the device also comprises a rubber baffle ring and a connecting spring, wherein the rubber baffle ring is slidably connected to the outer side of the receiver, the connecting spring is wound on the outer side of the receiver, and two ends of the connecting spring are respectively connected with the top of the rubber baffle ring and the bottom of the reinforcing rod.
Further, still including slide bar, go-between, reset spring and rubber ring, slide bar symmetry sliding connection is on the bracing piece, and the go-between is connected in the slide bar upper end, and the go-between cover is in the support column outside, and reset spring winds in the slide bar outside, and reset spring's both ends are connected bracing piece top and go-between bottom respectively, and the rubber ring is connected at the go-between top.
Further, still including connecting plate, second electric putter, slider and cavity standpipe, the connecting plate is connected in the bracing piece side, and second electric putter is connected on the connecting plate, and the slider is connected on the telescopic link of second electric putter, and the slider is located the guide way, and cavity standpipe is connected in the slider side, and cavity standpipe is located the through-hole.
Further, still including backup pad, guide ring, montant, clamp plate, connecting rod and third electric putter, the backup pad is connected in the testing platform top of detector body, and guide ring symmetry is connected on the testing platform of detector body, montant sliding connection in the guide ring, and the clamp plate is connected in the montant upper end, and the clamp plate is located the backup pad directly over, and the connecting rod is connected in the montant lower extreme, and third electric putter symmetry is connected in the testing platform of detector body inside, and third electric putter's telescopic link and connecting rod fixed connection.
Further, still including fixed stop, ripple side pipe, square frame and fourth electric putter, fixed stop connects on the detector body, and fixed stop is located the clamp plate directly over, and ripple side pipe connects in the testing platform top of detector body, and ripple side pipe is located the backup pad outside, and square frame connection is in ripple side pipe upper end, and fourth electric putter symmetrical connection is inside the testing platform of detector body, and fourth electric putter's telescopic link and square frame fixed connection.
Further, the supporting plate and the pressing plate are made of optical glass.
The invention has the beneficial effects that 1, the plastic parts with various complex shapes can be adapted through the improved detection platform and the positioning assembly, especially for the parts with arc or special-shaped surfaces, the light transmittance of the parts can be detected under the condition of not damaging the parts, the problem that the parts are unstable on the detection platform can be avoided, the parts to be detected do not need to be cut off from the parts to serve as samples, the time and the labor are saved, and the representativeness and the accuracy of detection data are ensured.
2. The invention can effectively isolate external light interference by adopting the flattening component and the shading structure (such as the rubber baffle ring, the rubber ring and the square frame), and the design can not only improve the detection stability, but also ensure the reliability and consistency of the detection result, which is particularly important in occasions with strict requirements on the optical performance of materials, such as laser welding and the like.
Drawings
Fig. 1 is a schematic diagram of welding of a first weldment and a second weldment.
Fig. 2 is a schematic view of the third weldment when light transmittance is detected.
Fig. 3 is a schematic perspective view of the present invention.
FIG. 4 is a schematic view of the installation of the laser transmitter, support post, receiver and lift assembly of the present invention.
FIG. 5 is a cross-sectional view of a support post and rubber stop ring of the present invention.
FIG. 6 is a schematic view of the installation of the slide bar, connecting ring, return spring, rubber ring and connecting plate of the present invention.
FIG. 7 is a schematic view of the installation of the support plate, guide ring, vertical rod, pressure plate and connecting rod of the present invention.
Fig. 8 is a schematic diagram of a specific structure of the vertical rod, the pressing plate, the connecting rod and the third electric push rod according to the present invention.
Fig. 9 is a schematic view showing the installation of the fixed baffle, the corrugated square tube, the square frame and the fourth electric push rod.
In the above figures, 001-first weldment, 002-second weldment, 003-third weldment, 0031-groove flat, 0032-groove inclined, 004-laser beam, 1-detector body, 101-detection platform, 102-display, 2-bearing, 3-mounting plate, 4-support bar, 401-vertical slot, 5-laser transmitter, 6-support column, 601-through hole, 602-guide slot, 7-receiver, 8-fixed bar, 9-guide round bar, 10-mounting block, 11-reinforcing bar, 12-first electric push bar, 13-rubber retainer ring, 14-connection spring, 15-sliding bar, 16-connection ring, 17-return spring, 18-rubber ring, 19-connection plate, 20-second electric push bar, 21-sliding block, 22-hollow standpipe, 23-support plate, 24-guide ring, 25-vertical bar, 26-pressure plate, 27-connection bar, 28-third electric push bar, 29-fixed baffle, 30-ripple square tube, 31-square tube, 32-fourth electric push bar.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the light transmittance detector for plastic parts is shown in fig. 3-5, and comprises a detector body 1, wherein the detector body 1 is a full-picture laser plastic light transmittance detector, the detector body 1 comprises a detection platform 101 and a display 102, an operator can place the plastic parts on the top of the detection platform 101, then the detector body 1 can be controlled to detect the light transmittance of the plastic parts, and detection pictures and detection data are displayed through the display 102, so that the prior art is not repeated; the laser transmitter 5 is arranged at the upper end of the supporting rod 4, a connecting line (not shown in the figure) of the laser transmitter 5 can be led out from the vertical groove 401, the supporting column 6 is connected to the top of the laser transmitter 5, a through hole 601 aligned with the laser transmitter 5 is vertically arranged at the central position of the supporting column 6, a guide groove 602 communicated with the through hole 601 is vertically arranged at the right part of the supporting column 6, a lifting component used for driving the receiver 7 to lift is further arranged on the detecting platform 101, the receiver 7 is positioned right above the laser transmitter 5, so that a laser beam 004 emitted by the laser transmitter 5 can vertically pass through the through hole 601 and be received by the receiver 7, the lifting component comprises a fixing rod 8, a guide rod 9, a mounting block 10, an electric reinforcing rod 12 and a first push rod 8, the top of the fixing rod 8 is connected to the rear side of the first push rod 3, the front side of the upper part of the fixed rod 8 is slidingly connected with a guide round rod 9, the upper end of the guide round rod 9 is connected with a mounting block 10, the upper part of the front side of the mounting block 10 is connected with a reinforcing rod 11, the front end of the reinforcing rod 11 is fixedly connected with the receiver 7, the rear side of the top of the plate 3 is also connected with a first electric push rod 12, the first electric push rod 12 is positioned below the fixed rod 8, and a telescopic rod of the first electric push rod 12 penetrates through the top of the fixed rod 8 in a sliding manner and is connected with the bottom of the mounting block 10.
As shown in fig. 1, in the case of a welding condition, when light transmittance detection needs to be performed on a plastic part with a single layer and a flat surface, the second welding piece 002 can be directly placed on the top of the detection platform 101 of the detector body 1, and then the detector body 1 is controlled to perform light transmittance detection on the top surface of the second welding piece 002, and a detection picture and detection data are displayed through the display 102; when light transmittance of a plastic part with a complex shape is required to be detected, as shown in a welding condition B and a welding condition C in fig. 1, firstly, the mounting plate 3 can be rotated ninety degrees to the left to separate from the detection platform 101, then the plastic part is sleeved outside the laser transmitter 5 or outside the receiver 7, the orientation and the angle of the plastic part are adjusted, the part to be detected of the plastic part is positioned between the laser transmitter 5 and the receiver 7, then the plastic part is moved downwards, the bottom of the part to be detected of the plastic part is contacted with the top of the supporting column 6, the supporting column 6 is used for supporting the plastic part, the laser transmitter 5 is prevented from being damaged due to direct contact of the laser transmitter 5 and the plastic part, then the telescopic rod of the first electric push rod 12 is controlled to be shortened, the first electric push rod 12 can drive the mounting block 10 to move downwards, the guide round rod 9, the reinforcing rod 11 and the receiver 7 until the bottom of the receiver 7 is contacted with the top of the part to be detected of the plastic part, then the telescopic rod of the first electric push rod 12 is controlled to stop being shortened, at this moment, the laser beam 5 can be controlled to vertically emit 004 upwards, the laser beam 601 can pass through the through hole 601 to be irradiated on the part to be detected at the position to be detected of the plastic part to be detected by the receiver 7, the light transmittance of the plastic part is analyzed through the laser intensity received by the receiver 7, and the detection picture and the detection data are displayed through the display 102, so that the light transmittance detection work of the plastic part with a complex shape can be completed, the position to be detected is not required to be cut off on the plastic part manually and is used as a sample to be detected independently, the time can be saved, the accuracy of the detection data can be ensured, the expansion rod of the first electric push rod 12 can be controlled, the first electric push rod 12 can drive the installation block 10 to move upwards for resetting, the installation block 10 can drive the guide round rod 9, the reinforcing rod 11 and the receiver 7 to move upwards for resetting, the receiver 7 is separated from the plastic part, and then the detected plastic part can be taken away.
As shown in fig. 4-6, the device further comprises a rubber baffle ring 13 and a connecting spring 14, wherein the lower part of the outer side of the receiver 7 is slidably connected with the rubber baffle ring 13, the outer side of the receiver 7 is further wound with the connecting spring 14, the two ends of the connecting spring 14 are respectively connected with the top of the rubber baffle ring 13 and the bottom of the reinforcing rod 11, the device further comprises a sliding rod 15, a connecting ring 16, a return spring 17 and a rubber ring 18, the right side of the upper part of the supporting rod 4 is slidably connected with the two sliding rods 15, the connecting ring 16 is connected between the upper ends of the two sliding rods 15, the connecting ring 16 is sleeved outside the supporting column 6, the outer sides of the two sliding rods 15 are wound with the return spring 17, the two ends of the return spring 17 are respectively connected with the top of the supporting rod 4 and the bottom of the connecting ring 16, and the top of the connecting ring 16 is connected with the rubber ring 18.
When the part to be detected of the plastic part is positioned between the laser transmitter 5 and the receiver 7, an operator moves the plastic part downwards, when the bottom of the part to be detected of the plastic part is contacted with the top of the rubber ring 18, the rubber ring 18 is extruded to move downwards, the rubber ring 18 drives the sliding rod 15 and the connecting ring 16 to move downwards, the return spring 17 is compressed until the bottom of the part to be detected of the plastic part is contacted with the top of the support column 6, and the top of the rubber ring 18 is clung to the bottom of the part to be detected of the plastic part under the action of the elasticity of the return spring 17; then the receiver 7 is controlled to move downwards, the receiver 7 drives the rubber baffle ring 13 to move downwards, when the bottom of the rubber baffle ring 13 contacts with the top of the position to be detected of the plastic part, the rubber baffle ring 13 stops moving downwards, the receiver 7 continues to move downwards, the connecting spring 14 compresses until the bottom of the receiver 7 contacts with the top of the position to be detected of the plastic part, under the elastic force of the connecting spring 14, the bottom of the rubber baffle ring 13 clings to the top of the position to be detected of the plastic part, then the light transmittance of the plastic part can be detected, in the detection process, the rubber ring 18 can block the gap between the plastic part and the supporting column 6, the laser transmitter 5 can be ensured to vertically transmit the laser beam 004 upwards to be completely received by the receiver 7, meanwhile, the rubber baffle ring 13 can block the gap between the plastic part and the receiver 7, the receiver 7 can be ensured not to be influenced by external light, so the accuracy of the detection result can be ensured, when the receiver 7 moves upwards to be separated from the plastic part, the connecting spring 14 can gradually recover the original state, then the detected plastic part can be manually taken away, the plastic part can be separated from the rubber ring 18 at this moment, and the connecting spring 14 can recover the original state, the rubber ring 18, the sliding rod 15 and the connecting ring 16 are driven to move upwards for resetting.
As shown in fig. 2, the third welding piece 003 is provided with a groove, the top of the groove is a groove plane 0031, the left side and the right side of the groove are groove inclined planes 0032, when the light transmittance of the groove plane 0031 on the third welding piece 003 needs to be detected, if the third welding piece 003 is directly placed between the laser transmitter 5 and the receiver 7 for light transmittance detection, it is difficult to ensure that the laser transmitter 5 vertically emits a laser beam 004 upwards to accurately penetrate through the groove plane 0031 on the third welding piece 003, the condition that the laser beam 004 penetrates through the groove inclined planes 0032 on the third welding piece 003 possibly occurs, so that detection data are inaccurate, and a positioning component is designed, and as shown in fig. 5 and 6, the positioning component comprises a connecting plate 19, a second electric push rod 20, a slide block 21 and a hollow vertical tube 22, wherein the upper part of the right side of the supporting rod 4 is connected with the connecting plate 19, the lower part of the connecting plate 19 is connected with the second electric push rod 20, the telescopic rod of the second electric push rod 20 is connected with the slide block 21, the slide block 21 can slide in the guide groove 602, the slide block 21 is connected with the hollow vertical tube 22, and the hollow vertical tube 22 can penetrate through the hollow vertical tube 22, and the hollow vertical tube 22 is arranged on the hollow vertical tube 22, and the hollow top surface of the hollow vertical tube 22 is arranged on the hollow top wall of the hollow support tube 22.
When the light transmittance of the groove plane 0031 on the third welding piece 003 needs to be detected, firstly, the expansion rod of the second electric push rod 20 needs to be controlled to be elongated, the second electric push rod 20 can drive the sliding block 21 and the hollow vertical tube 22 to move upwards until the upper end of the hollow vertical tube 22 is higher than the top of the rubber ring 18, at the moment, the expansion rod of the second electric push rod 20 can be controlled to stop being elongated, then the third welding piece 003 can be placed at the upper end of the hollow vertical tube 22, the upper end of the hollow vertical tube 22 is enabled to be in contact with the groove plane 0031 on the third welding piece 003, then the expansion rod of the second electric push rod 20 can be controlled to be shortened, the second electric push rod 20 can drive the sliding block 21 and the hollow vertical tube 22 to move downwards, at the moment, an operator can control the third welding piece 003 to move downwards along with the hollow vertical tube 22 synchronously until the bottom of the third welding piece 003 is in contact with the top of the supporting column 6, at the moment, the expansion rod of the second electric push rod 20 can be controlled to stop being elongated, at the moment, the groove plane 0031 on the third welding piece 003 can be detected, the light transmittance of the laser emitter 003 can be emitted by the laser emitter 003, and the laser beam can pass through the inner part of the groove plane 0031 precisely and pass through the groove plane 0031.
As the cooperation of the laser transmitter 5 and the receiver 7 only can detect the local light transmittance of the plastic part, the comprehensive light transmittance of the bent plastic part cannot be detected, if the detector body 1 is directly used for detecting the light transmittance of the bent plastic part, the thickness of laser passing through the plastic part is larger than the thickness of the plastic part, so that the detection result is inaccurate, therefore, a flattening assembly is designed, as shown in fig. 7 and 8, the flattening assembly comprises a supporting plate 23, guide rings 24, vertical rods 25, a pressing plate 26, a connecting rod 27 and a third electric push rod 28, the top of the detection platform 101 is connected with the supporting plate 23, the upper part of the detection platform 101 is symmetrically connected with four guide rings 24, the four guide rings 24 are distributed in a rectangular shape, the four guide rings 24 are all connected with the vertical rods 25 in a sliding manner, the pressing plate 26 is connected between the upper ends of the four vertical rods 25, the pressing plate 26 is positioned right above the supporting plate 23, the supporting plate 23 and the pressing plate 26 are made of optical glass, the light transmittance of the optical glass is extremely high, the connecting rods 27 are connected between the lower ends of the two corresponding vertical rods 25, the number of the connecting rods 27 is equal to the number of the second electric push rods, the electric push rods 27 are connected with the third electric push rods 28 in a one-to-one correspondence manner, and the bottom of the electric push rods 28 are connected with the third electric push rods 28 respectively.
When the plastic part is required to be subjected to comprehensive light transmittance detection, the plastic part can be directly placed on the top of the supporting plate 23, then the telescopic rod of the third electric push rod 28 is controlled to be shortened, the third electric push rod 28 can drive the connecting rod 27 to move downwards, the connecting rod 27 can drive the vertical rod 25 and the pressing plate 26 to move downwards, when the pressing plate 26 is in contact with the top of the plastic part, the pressing plate 26 can continuously move downwards to flatten the plastic part, the subsequent light transmittance detection of the plastic part is facilitated, if the plastic part is single-layer and flat in surface, the plastic part can also be placed on the supporting plate 23 and pressed by the pressing plate 26 to carry out light transmittance detection, the telescopic rod of the third electric push rod 28 can be controlled to extend after detection, the connecting rod 27 can be driven to move upwards to reset, the connecting rod 27 can drive the vertical rod 25 and the pressing plate 26 to move upwards to reset, the pressing plate 26 is separated from the plastic part, and then the detected plastic part can be taken away.
As shown in fig. 9, the detector further comprises a fixed baffle 29, a corrugated square tube 30, a square frame 31 and a fourth electric push rod 32, the fixed baffle 29 is connected to the upper portion of the detector body 1, the fixed baffle 29 is located right above the pressing plate 26, the corrugated square tube 30 is connected to the top of the detection platform 101, the corrugated square tube 30 is located outside the supporting plate 23, the square frame 31 is connected to the upper end of the corrugated square tube 30, the fourth electric push rod 32 is connected to the rear side inside the detection platform 101 in a bilateral symmetry manner, and the telescopic rods of the two fourth electric push rods 32 are fixedly connected with the square frame 31.
When the detector body 1 is required to be used for detecting the light transmittance of plastic parts, the telescopic rod of the fourth electric push rod 32 can be controlled to stretch, the fourth electric push rod 32 can drive the square frame 31 to move upwards, the square frame 31 can pull the upper end of the corrugated square pipe 30 to move upwards, the corrugated square pipe 30 is stretched until the top of the square frame 31 is contacted with the bottom of the fixed baffle 29, and at the moment, the corrugated square pipe 30 can be covered outside the supporting plate 23 and the pressing plate 26, so that the interference of external light on the detection result of the detector body 1 can be prevented, and the accuracy of the detection result is ensured.
The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention.
Claims (8)
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| Application Number | Priority Date | Filing Date | Title |
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| CN202411886801.2A CN119354928B (en) | 2024-12-20 | 2024-12-20 | Plastic part light transmittance detector |
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| CN202411886801.2A CN119354928B (en) | 2024-12-20 | 2024-12-20 | Plastic part light transmittance detector |
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| CN119354928B CN119354928B (en) | 2025-04-25 |
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