Defect detection device for plastic products

Abstract

The invention provides a plastic product defect detection device, and relates to the technical field of plastic product production detection, the plastic product defect detection device comprises a stabilizing main body, a gantry and a positioning column are arranged above the stabilizing main body, a transverse stabilizing plate is arranged at the bottom of the stabilizing main body, and a first electric motor is arranged at the bottom of the stabilizing plate; a vertical mounting plate is arranged at the bottom of the stabilizing body, and a push switch is mounted on one side of the mounting plate. An air pressure detection mechanism is arranged, tiny air holes or air leakage flaws of plastic bottles can be efficiently and accurately detected, product quality is prevented from being affected by misjudgment of the flaws, a third electric motor is started to drive a drainage sleeve, a positioning shell, a first rubber block and a second rubber block to move downwards, the second rubber block makes contact with a bottle opening firstly, and the second rubber block moves downwards along with continuous descending. The first rubber block moves in the drainage sleeve, compressed air enters the air pressure detector, and the problem of bottle leak detection is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic product production and detection, and particularly relates to a plastic product defect detection device. Background Art

[0002] During the production process of plastic products, product quality control is of crucial importance. However, due to the influence of raw material quality, production processes, and equipment operation factors, various defects are likely to appear on the surface or inside of plastic products, such as cracks, holes, bubbles, impurities, and scratches, including plastic bottles. Currently, there are mainly two methods for detecting plastic product defects: manual detection and traditional machine vision detection, but both have obvious limitations:

[0003] Traditional plastic product defect detection devices are basically machine vision detection, which detects whether the appearance shape of plastic products meets the standards by taking pictures. Therefore, traditional detection devices are prone to missing and misdetecting defects such as the transparency of plastic bottles, tiny internal air holes, or air leakage defects, making it difficult to ensure the reliability of detection results;

[0004] In addition, in actual production scenarios, the specifications, shapes, and materials of plastic bottles are diverse. Existing detection devices are difficult to flexibly adjust to meet the detection requirements of different specifications of products, and have poor adaptability to different types of plastic products. A large number of parameter adjustments and template trainings are required for different products. In addition, problems such as inaccurate detection positions are likely to occur during the detection process, resulting in errors in detection results, increasing the detection cost and time. Summary of the Invention

[0005] The present invention relates to a plastic product defect detection device. The third electric motor starts, driving the drainage sleeve, positioning housing, first rubber block, and second rubber block to move downward. The second rubber block first contacts the bottle mouth. As it continues to descend, the first rubber block moves within the drainage sleeve, and compressed air enters the air pressure detector. By observing the numerical change of the air pressure detector, it is judged whether there are tiny air holes or air leakage defects in the plastic bottle.

[0006] The present invention provides a plastic product defect detection device, which specifically includes: a stable main body. Above the stable main body, a gantry and a positioning column are installed. The gantry is in a U-shaped structure. At the bottom of the stable main body, a horizontal stabilizing plate is provided. At the bottom of the stabilizing plate, a first electric motor is installed. At the bottom of the stable main body, a vertical mounting plate is provided. On one side of the mounting plate, a push switch is installed. Above the gantry, a second electric motor is installed at a corner. On both sides of the gantry, a blocking plate is installed respectively. The second electric motor and the blocking plate cooperate with each other to jointly form a transparency detection mechanism. Above the positioning column, a third electric motor is installed. Inside the gantry, a vision detector is installed. Above the positioning column, a sliding groove is opened. The sliding groove is in a T-shaped structure. Inside the sliding groove, a lifting plate is installed. On both sides of the lifting plate, a horizontal second positioning rod is installed respectively. Between the two second positioning rods, a locking frame is installed. The locking frame and the second positioning rod cooperate with each other to jointly form a locking structure.

[0007] Further, inside the sliding groove of the positioning column, a rotatably connected automatic threaded rod is installed. On one side of the lifting plate, a vertical threaded hole is opened. The automatic threaded rod passes through the inside of the threaded hole and is connected to the drive shaft of the third electric motor.

[0008] Further, on both sides of the gantry, a group of vertical sliding grooves are opened respectively. The sliding grooves are in a T-shaped structure. On one side of the blocking plate, a group of positioning strips are provided. The positioning strips are in a T-shaped structure. The positioning strips extend into the inside of the sliding grooves. On one side of the blocking plate, a group of meshing teeth are provided. On the outer side of the drive shaft of the second electric motor, two first gears are installed. The first gears are meshed with the meshing teeth. Inside the gantry, a group of transparency lighting and detection components are installed.

[0009] Further, on the upper position of the drive shaft of the first electric motor, a second gear is installed. In the middle of the stable main body, two symmetrically distributed positioning frames are installed. At the bottom of the stable main body, two groups of sliding grooves are opened. The sliding grooves are in a T-shaped structure. Inside the positioning frame, a sliding strip is provided. The sliding strip passes through the inside of the sliding groove. Inside the positioning frame, a rack is provided. The second gear is meshed with the rack. On one side above the positioning frame, a vertical clamping plate is installed. The first electric motor, the push rod, the positioning frame, and the clamping plate cooperate with each other to jointly form a clamping mechanism. On one side above the positioning frame, two horizontal sliding holes are opened. The sliding holes are in a cylindrical structure. On one side of the clamping plate, two sliding rods are provided. The sliding rods pass through the inside of the sliding holes. On the outer side of the sliding rods, a support spring and a snap spring are installed.

[0010] Further, a threaded hole and a sliding hole are formed in the middle position of the gantry. The threaded hole and the sliding hole are respectively vertical structures. A manually operated threaded rod connected by threading is inserted into the threaded hole, and a first positioning rod is inserted into the sliding hole. A visually detecting device connected by rotation is installed at the bottom of the manually operated threaded rod. The manually operated threaded rod, the visually detecting device, and the first positioning rod cooperate with each other to jointly form a visual detection mechanism. The bottom of the first positioning rod is firmly connected above the visually detecting device.

[0011] Further, positioning blocks are respectively arranged on both sides of the lifting plate. The positioning blocks are rectangular structures. An air pressure detector is installed above the lifting plate. A drainage sleeve is installed at the bottom position on one side of the lifting plate. A drainage pipe is installed between the drainage sleeve and the air pressure detector. Two stable grooves are formed at the bottom position of the air pressure detector. The stable grooves are L-shaped structures. The positioning blocks pass through the inside of the stable grooves. A support spring is installed at the bottom of the air pressure detector. The third electric motor, the lifting plate, the positioning blocks, the automatic threaded rod, the drainage sleeve, the positioning housing, the first rubber block, the second rubber block, and the air pressure detector cooperate with each other to jointly form an air pressure detection mechanism.

[0012] Further, sliding holes are respectively formed on both sides of the locking frame. The second positioning rod passes through the inside of the sliding holes. A support spring and a snap ring are installed at the outer side position of the second positioning rod. A horizontal sliding hole is formed on one side of the lifting plate. The sliding hole is a rectangular structure. A locking block is arranged at the middle position on the inner side of the locking frame. An inclined surface is arranged at the bottom of the locking block. An installation block is arranged above the drainage sleeve. The installation block is a rectangular structure. A vertical installation hole is formed on one side of the lifting plate. The installation hole is a rectangular structure. The installation block passes through the inside of the installation hole. A clamping groove is formed on one side of the installation block.

[0013] Further, a positioning housing is installed at the bottom position of the drainage sleeve. The upper part of the positioning housing extends into the drainage sleeve. A second rubber block is installed at the inner side position of the bottom of the positioning housing. A positioning groove is formed at the upper position of the positioning housing. The positioning groove is a circular ring structure. A first rubber block is installed at the positioning groove position above the positioning housing. The first rubber block contacts the inner wall of the drainage sleeve. A group of sealing grooves are formed on the outer side surface of the first rubber block. The sealing grooves are circular ring structures.

[0014] Further, through holes communicating with each other are respectively formed at the middle positions of the drainage sleeve, the positioning housing, the first rubber block, and the second rubber block. A support spring is installed between the drainage sleeve and the positioning housing.

[0015] Further, a horizontal sliding hole is opened at the bottom position of the positioning frame. The sliding hole is of a cylindrical structure, and a push rod is inserted into the interior of the sliding hole. The push rod is of a cylindrical stepped structure. The push rod is aligned with the push switch. A support spring and a positioning circlip are installed at the outer side position of the push rod. The push switch is electrically connected to the third electric motor.

[0016] The present invention provides a plastic product defect detection device, which has the following beneficial effects:

[0017] In the present invention, a transparency detection mechanism is provided. The sealed space formed by the baffle and the gantry effectively isolates the interference of external light, ensuring the accuracy of the transparency detection data. At the same time, the visual detection mechanism can precisely adjust the height of the visual detector through the manual screw rod. Combined with the lighting design of the gantry, it can clearly capture the fine defects on the surface of the plastic bottle, such as scratches, cracks, and deformations, providing a reliable basis for quality inspection.

[0018] In addition, a air pressure detection mechanism is provided to efficiently and accurately detect the micro pores or air leakage defects of the plastic bottle, avoiding the influence of product quality due to misjudgment of defects. The third electric motor is started to drive the drainage sleeve, the positioning housing, the first rubber block, and the second rubber block to move downward. The second rubber block first contacts the bottle mouth. As it continues to descend, the first rubber block moves within the drainage sleeve, and compressed air enters the air pressure detector. By observing the numerical change of the air pressure detector, it is judged whether there are micro pores or air leakage defects in the plastic bottle. In addition, this design eliminates the detection cost of separately setting an air pressure delivery pump.

[0019] In addition, the device realizes the automatic linkage of each component through the push switch. When the plastic bottle is clamped, the third electric motor is automatically started without additional manual operation, reducing the errors and time losses caused by manual intervention and further improving the overall detection work efficiency.

[0020] In addition, the clamping mechanism uses the first electric motor to drive the positioning frame, cooperating with the clamping plate and the support spring, to be able to flexibly clamp plastic bottles of various materials and shapes and complete the positioning in the middle position, ensuring the stability of the bottle during the detection process and also helping to improve the accuracy and consistency of subsequent detection.

[0021] In addition, the quick positioning and disassembly design of the air pressure detector, as well as the quick locking and unlocking functions of the locking structure for the drainage sleeve, make the operation of the equipment simple during maintenance, debugging, calibration, and upgrading. When a component fails or needs to be replaced, the operation can be quickly carried out, reducing the equipment downtime and improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0023] The accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0024] In the accompanying drawings:

[0025] Figure 1 An axonometric structural diagram detected by the defect detection device of the present invention is shown;

[0026] Figure 2 The Figure 1 axonometric structural diagram of the rear view angle of the present invention is shown;

[0027] Figure 3 An axonometric structural diagram of the sectional structure of the lifting plate and the locking frame of the present invention is shown;

[0028] Figure 4 An axonometric structural diagram of the sectional structure of the air pressure detection mechanism and the gantry of the present invention is shown;

[0029] Figure 5 The Figure 4 axonometric structural diagram of the partial part of the present invention is shown;

[0030] Figure 6 The Figure 5 axonometric structural diagram of the bottom view angle of the present invention is shown;

[0031] Figure 7 An axonometric structural diagram of the disassembled structure of the clamping mechanism of the present invention is shown;

[0032] Figure 8 An axonometric structural diagram of the disassembled structure of the air pressure detection mechanism of the present invention is shown;

[0033] Figure 9 The Figure 1 enlarged structural diagram at position A of the present invention is shown;

[0034] Figure 10 The Figure 3 enlarged structural diagram at position B of the present invention is shown;

[0035] Figure 11 The Figure 4 enlarged structural diagram at position C of the present invention is shown;

[0036] Figure 12 The Figure 5 enlarged structural diagram at position D of the present invention is shown.

[0037] List of reference numerals

[0038] 1. Stable main body; 101. Gantry; 102. Positioning column;

[0039] 2. Clamping mechanism; 201. First electric motor; 20101. Push rod; 202. Positioning frame; 203. Clamping plate;

[0040] 3. Press switch;

[0041] 4. Transparency detection mechanism; 401. Second electric motor; 402. Baffle plate;

[0042] 5. Air pressure detection mechanism; 501. Third electric motor; 502. Lifting plate; 50201. Positioning block; 503. Automatic screw rod; 504. Drainage sleeve; 505. Positioning housing; 506. First rubber block; 507. Second rubber block; 508. Air pressure detector;

[0043] 6. Visual detection mechanism; 601. Manual screw rod; 602. Visual detector; 603. First positioning rod;

[0044] 7. Locking structure; 701. Locking frame; 702. Second positioning rod. Specific implementation mode

[0045] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0046] Embodiment 1: Please refer to Figures 1 to 12 :

[0047] The present invention provides a plastic product defect detection device, comprising: a stable main body 1, above which a gantry 101 and a positioning column 102 are installed. The gantry 101 is in a U-shaped structure. At the bottom of the stable main body 1, a horizontal stabilizing plate is provided, and at the bottom of the stabilizing plate, a first electric motor 201 is installed. Bolts are installed between the stabilizing plate and the first electric motor 201 to stabilize the first electric motor 201 after installation. A second gear is installed on the driving shaft of the first electric motor 201 at the upper position. Two symmetrically distributed positioning brackets 202 are installed at the middle position of the stable main body 1. Two groups of sliding grooves are opened at the bottom of the stable main body 1. The sliding grooves are in a T-shaped structure. A sliding bar is provided inside the positioning bracket 202. The sliding bar passes through the inside of the sliding groove, and the sliding bar cooperates with the sliding groove to achieve the effect of circumferential and vertical positioning of the positioning bracket 202. A rack is provided inside the positioning bracket 202. The second gear meshes with the rack. Controlling the first electric motor 201 can control the synchronous reverse movement of the two positioning brackets 202. At the upper position of the positioning bracket 202, a vertical clamping plate 203 is installed on one side. The first electric motor 201, the push rod 20101, the positioning bracket 202, and the clamping plate 203 cooperate with each other to jointly form a clamping mechanism 2. Two horizontal sliding holes are opened at the upper position of the positioning bracket 202 on one side. The sliding holes are in a cylindrical structure. Two sliding rods are provided on one side of the clamping plate 203. The sliding rods pass through the inside of the sliding holes, and the two sliding rods cooperate with each other to achieve the effect of circumferential and vertical positioning of the clamping plate 203. A support spring and a snap spring are installed on the outer side of the sliding rod. The support spring elastically supports the clamping plate 203. Controlling the movement of the positioning bracket 202 cooperates with the clamping plate 203 and the support spring to flexibly clamp the plastic bottle, and at the same time, the middle position of the plastic bottle is positioned. It is applicable to plastic bottles of various materials and shapes, expanding the application range of the device, and the middle position positioning function helps to improve the accuracy and consistency of subsequent detection;

[0048] In this embodiment, a vertical mounting plate is provided at the bottom position of the stable main body 1. A push switch 3 is installed on one side of the mounting plate. A second electric motor 401 is installed at the corner above the gantry 101. A baffle 402 is installed at both sides of the gantry 101. The second electric motor 401 and the baffle 402 cooperate with each other to jointly form a transparency detection mechanism 4. A set of vertical sliding grooves are respectively opened at both sides of the gantry 101. The sliding grooves are of T-shaped structure. A set of positioning strips are provided on one side of the baffle 402. The positioning strips are of T-shaped structure. The positioning strips extend into the interior of the sliding grooves. The positioning strips cooperate with the sliding grooves to achieve the effect of circumferential and lateral positioning of the baffle 402. A set of meshing teeth are provided on one side of the baffle 402. Two first gears are installed on the outer side of the drive shaft of the second electric motor 401. The first gears are meshed with the meshing teeth. Therefore, controlling the second electric motor 401 can control the up and down movement of the baffle 402. A set of light-emitting and detecting components for transparency are installed at the inner side position of the gantry 101. After the baffle 402 moves downward, a sealed space is formed inside the gantry 101 to avoid light leakage. Therefore, the baffle 402 can not only effectively prevent external light from interfering with the transparency detection and ensure the accuracy of the detection data of the transparency detection mechanism 4, but also the formation method of this sealed space is simple and reliable, easy to operate and control, can quickly adapt to different detection tasks, and improve the detection efficiency;

[0049] In this embodiment, a positioning housing 505 is installed at the bottom of the drainage sleeve 504. The upper part of the positioning housing 505 extends into the interior of the drainage sleeve 504. A second rubber block 507 is installed on the inner side of the bottom of the positioning housing 505. A positioning groove is formed at the upper position of the positioning housing 505. The positioning groove is of a circular ring structure. A first rubber block 506 is installed at the upper position of the positioning housing 505 at the position of the positioning groove. The positioning groove realizes the effect of firmly assembling the positioning housing 505 and the first rubber block 506. The first rubber block 506 contacts the inner wall of the drainage sleeve 504. A set of sealing grooves are formed on the outer side surface of the first rubber block 506. The sealing grooves are of a circular ring structure. The sealing grooves can enhance the sealing effect of the first rubber block 506. Therefore, through this structural design, the sealing performance between the drainage sleeve 504 and the positioning housing 505, and the sealing performance between the first rubber block 506 and the inner wall of the drainage sleeve 504 are enhanced, effectively preventing air leakage during the air pressure detection process, ensuring the reliability of the air pressure detection result, avoiding misjudgment of plastic bottle defects due to air leakage, improving the detection accuracy. Through holes that communicate with each other are respectively formed in the middle positions of the drainage sleeve 504, the positioning housing 505, the first rubber block 506, and the second rubber block 507. A support spring is installed between the drainage sleeve 504 and the positioning housing 505. The support spring elastically presses the positioning housing 505, the first rubber block 506, and the second rubber block 507 downward. The third electric motor 501 is controlled to drive the drainage sleeve 504, the positioning housing 505, the first rubber block 506, and the second rubber block 507 to move downward. The second rubber block 507 first contacts the bottle mouth under the support of the spring. Immediately afterwards, the drainage sleeve 504, the positioning housing 505, and the first rubber block 506 continue to move downward. The first rubber block 506 moves inside the drainage sleeve 504 under force. At this time, the air is compressed and conveyed into the interior of the air pressure detector 508. By setting a pressure detection value for the air pressure detector 508, when the set value of the air pressure detector 508 changes, it indicates that there are micro pores or air leakage in the plastic bottle. At this time, the defective plastic bottles can be screened out. This air pressure detection method can efficiently and accurately detect the micro pores or air leakage defects of plastic bottles. The detection principle is simple and reliable, without complex operation processes and structures, and can quickly detect and screen a large number of plastic bottles, improving the efficiency and accuracy of the quality detection of plastic products and effectively ensuring the product quality;

[0050] In this embodiment, a third electric motor 501 is installed above the positioning column 102, and a vision detector 602 is installed inside the gantry 101. A sliding groove is opened above the positioning column 102. The sliding groove is of a T-shaped structure. A lifting plate 502 is installed inside the sliding groove. The sliding groove realizes the effect of circumferential positioning of the lifting plate 502. An automatically rotating threaded rod 503 is installed inside the sliding groove of the positioning column 102 in a rotatable connection manner. A vertical threaded hole is opened on one side of the lifting plate 502. The automatically rotating threaded rod 503 passes through the inside of the threaded hole and is connected to the drive shaft of the third electric motor 501. The automatically rotating threaded rod 503 and the drive shaft are positioned by a wedge key structure. By controlling the third electric motor 501 to drive the automatically rotating threaded rod 503 to rotate forward and backward, the height of the lifting plate 502 can be flexibly adjusted to meet the detection requirements of plastic products of different heights, improving the adaptability of the device to products of different specifications. At the same time, the precise height adjustment also helps to ensure the relative position accuracy between each component and the plastic product during the detection process. Positioning blocks 50201 are respectively arranged on both sides of the lifting plate 502. The positioning blocks 50201 are of a rectangular structure. A pressure detector 508 is installed above the lifting plate 502. A drainage sleeve 504 is installed at the bottom position on one side of the lifting plate 502. A drainage pipe is installed between the drainage sleeve 504 and the pressure detector 508. The drainage pipe is set as a flexible pipe structure according to actual needs. Two stabilizing grooves are opened at the bottom position of the pressure detector 508. The stabilizing grooves are of an L-shaped structure. The positioning blocks 50201 pass through the inside of the stabilizing grooves. A support spring is installed at the bottom of the pressure detector 508. The third electric motor 501, the lifting plate 502, the positioning blocks 50201, the automatically rotating threaded rod 503, the drainage sleeve 504, the positioning housing 505, the first rubber block 506, the second rubber block 507, and the pressure detector 508 cooperate with each other to jointly form a pressure detection mechanism 5. The support spring elastically supports the pressure detector 508 upward. The cooperation between the support spring and the positioning blocks 50201 realizes the effect of quickly positioning the installation position of the pressure detector 508. After pressing the pressure detector 508 downward, the unlocking of the pressure detector 508 can be realized. At this time, the effect of quickly disassembling and assembling the pressure detector 508 can be realized. Therefore, this quick positioning and disassembly design facilitates the installation, debugging, maintenance, and replacement of the pressure detector 508. When the pressure detector 508 fails or needs to be calibrated or upgraded, operations can be carried out quickly, reducing the equipment downtime and improving the production efficiency. At the same time, the stability of the pressure detector 508 after installation is ensured, ensuring the accuracy of pressure detection;

[0051] In this embodiment, a horizontal sliding hole is opened at the bottom of the positioning frame 202. The sliding hole is of a cylindrical structure, and a push rod 20101 is inserted into the inside of the sliding hole. The push rod 20101 is of a cylindrical stepped structure. The push rod 20101 is aligned with the push button switch 3. A support spring and a positioning snap spring are installed at the outer side of the push rod 20101. The positioning snap spring positions the moving position of the push rod 20101, and the support spring elastically supports the push rod 20101. When the positioning frame 202 and the clamping plate 203 clamp the plastic bottle, the push rod 20101 presses the push button switch 3 under the support of the spring. The push button switch 3 is electrically connected to the third electric motor 501. At this time, the third electric motor 501 is automatically powered on, realizing the automatic linkage between the components of the device. When the plastic bottle is clamped, the third electric motor 501 is automatically started without additional manual operation, improving the coherence and automation degree of the detection process, reducing the errors and time losses that may be brought by manual intervention, and further improving the working efficiency of the entire plastic product defect detection;

[0052] In this embodiment, a threaded hole and a sliding hole are opened at the middle position of the gantry 101. The threaded hole and the sliding hole are respectively of a vertical structure. A manually operated threaded rod 601 with a threaded connection is inserted into the inside of the threaded hole. The pitch of the thread is processed according to actual needs. A first positioning rod 603 is inserted into the inside of the sliding hole. A visually detectable device 602 with a rotational connection is installed at the bottom of the manually operated threaded rod 601. The manually operated threaded rod 601, the visually detectable device 602, and the first positioning rod 603 cooperate with each other to jointly form a visual detection mechanism 6. The bottom of the first positioning rod 603 is firmly connected to the upper part of the visually detectable device 602. The first positioning rod 603 circumferentially positions the visually detectable device 602. Therefore, when the manually operated threaded rod 601 is rotated, the height of the visually detectable device 602 can be controlled to be adjusted up and down. The visually detectable device 602 takes pictures of the plastic bottle for detection. The specific steps and modules of this detection utilize existing technologies. In addition, the light-emitting component provided on the gantry 101 can illuminate the visually detectable device 602 at the same time. Therefore, by flexibly adjusting the height of the visually detectable device 602, the visually detectable device 602 can take pictures of different parts of the plastic bottle more accurately. Combined with the lighting design of the gantry 101, the clarity and accuracy of the visual detection can be improved, and defects on the surface of the plastic bottle, such as scratches, cracks, and deformations, can be more effectively detected;

[0053] In this embodiment, a transverse second positioning rod 702 is installed on each side of the lifting plate 502. The second positioning rod 702 can be welded to both sides of the lifting plate 502 by welding. A locking frame 701 is installed between the two second positioning rods 702. The locking frame 701 and the second positioning rod 702 cooperate with each other to jointly form a locking structure 7. A sliding hole is opened on each side of the locking frame 701, and the second positioning rod 702 passes through the inside of the sliding hole. The two second positioning rods 702 cooperate with each other to achieve the effect of circumferential and vertical positioning of the locking frame 701. A support spring and a snap ring are installed on the outer side of the second positioning rod 702. A transverse sliding hole is opened on one side of the lifting plate 502. The sliding hole is a rectangular structure. A locking block is provided in the middle of the inner side of the locking frame 701, and an inclined surface is provided at the bottom of the locking block. An installation block is provided above the drainage sleeve 504. The installation block is a rectangular structure. A vertical installation hole is opened on one side of the lifting plate 502. The installation hole is a rectangular structure. The installation block passes through the inside of the installation hole. After the installation block is installed, the effect of circumferential positioning of the drainage sleeve 504 is achieved. A card slot is opened on one side of the installation block. The support spring pushes the locking block to automatically move into the card slot. The locking frame 701, the second positioning rod 702, and the locking block cooperate with each other to achieve the effect of quickly locking the installation position of the drainage sleeve 504. The drainage sleeve 504 can be unlocked by pushing the locking frame 701 in the reverse direction.

[0054] Embodiment 2, on the basis of Embodiment 1, as Figures 1 - 8 shown, the specific detection and transmission structure of the light-emitting and detection components provided inside the gantry 101 is realized by using the prior art.

[0055] Embodiment 3, on the basis of Embodiment 1, as Figures 1 - 8 shown, a conveyor belt is installed inside the stabilizing body 1, and a driving member needs to be provided on the basis of the conveyor belt.

[0056] The working principle of this embodiment:

[0057] First, rotate the manual screw rod 601 to adjust the height of the visual detector 602 so that it aligns with the part of the plastic bottle to be detected. Start the conveyor belt driving member, place the plastic bottle on the conveyor belt, and the conveyor belt transports the bottle into the interior of the gantry 101. Start the second electric motor 401, and the first gear on the drive shaft acts on the meshing teeth of the baffle 402, causing the baffle 402 to descend to form a sealed space inside the gantry 101, avoiding interference from external light during transparency detection. Use the transparency lighting and detection components inside the gantry 101 to detect the transparency of the plastic bottle. The detection data is directly transmitted and analyzed to determine whether the transparency of the plastic product meets the standard. Then, the lighting member on the gantry 101 lights up to illuminate the visual detector 602, and the visual detector 602 takes a photo of the plastic bottle for detection. Analyze the photo based on the existing detection module and steps to identify surface defects. Control the baffle 402 to rise, and the plastic bottle continues to move between the positioning frames 202;

[0058] Start the first electric motor 201, and the second gear on the drive shaft drives the rack of the positioning frame 202, causing the two positioning frames 202 to move synchronously in opposite directions. Place the plastic bottle between the two clamping plates 203, and the support spring pushes the clamping plates 203 to flexibly clamp the plastic bottle and complete the positioning of the middle position of the plastic bottle. At this time, the push rod 20101 presses the push switch 3 under the action of the support spring, and the third electric motor 501 is automatically powered on;

[0059] Start the third electric motor 501, drive the drainage sleeve 504, the positioning housing 505, the first rubber block 506, and the second rubber block 507 to move downward. The second rubber block 507 first contacts the bottle mouth. As it continues to descend, the first rubber block 506 moves inside the drainage sleeve 504, and compressed air enters the air pressure detector 508. Observe the numerical change of the air pressure detector 508 to judge whether there are small air holes or air leakage defects in the plastic bottle;

[0060] After completing all the detection items, the third electric motor 501 rotates in reverse to drive the relevant components to rise and reset. The first electric motor 201 is started to make the positioning frame 202 move in the opposite direction, releasing the clamping of the clamping plates 203 on the bottle, collecting the detected plastic products, and classifying and storing the defective and non-defective plastic products according to the detection results.

[0061] During the transparency detection, due to the use of the detection and transmission structure of the existing technology, the detection and data transmission are carried out according to the operation specifications and procedures corresponding to this technology. For example, it may involve specific calibration steps and data transmission interface settings, and corresponding operations are carried out according to the specific existing technology adopted to achieve accurate detection and data processing of the transparency of the plastic bottle. The remaining steps are the same as those in the first embodiment.

Claims

1. A plastic product defect detection device, comprising: A stable main body (1), a transparency detection mechanism (4) and a locking structure (7). Above the stable main body (1), a gantry (101) and a positioning column (102) are installed. It is characterized in that a horizontal stabilizing plate is provided at the bottom of the stable main body (1), and a first electric motor (201) is installed at the bottom of the stabilizing plate. A vertical mounting plate is provided at the bottom of the stable main body (1), and a push switch (3) is installed on one side of the mounting plate. A second electric motor (401) is installed at the corner above the gantry (101), and a blocking plate (402) is installed on each of the two sides of the gantry (101). The second electric motor (401) and the blocking plate (402) cooperate with each other to jointly form the transparency detection mechanism (4). A third electric motor (501) is installed above the positioning column (102), and a vision detector (602) is installed inside the gantry (101). A sliding groove is opened above the positioning column (102), the sliding groove is of a T-shaped structure, and a lifting plate (502) is installed inside the sliding groove. A horizontal second positioning rod (702) is installed on each of the two sides of the lifting plate (502), and a locking frame (701) is installed between the two second positioning rods (702). The locking frame (701) and the second positioning rod (702) cooperate with each other to jointly form the locking structure (7).

2. The plastic product defect detection device according to claim 1, wherein a rotatably connected automatic threaded rod (503) is installed inside the sliding groove of the positioning column (102), a vertical threaded hole is opened on one side of the lifting plate (502), and the automatic threaded rod (503) passes through the inside of the threaded hole and is connected to the drive shaft of the third electric motor (501).

3. The plastic product defect detection device according to claim 1, wherein a set of vertical sliding grooves are respectively opened on the two sides of the gantry (101), a set of positioning strips are provided on one side of the blocking plate (402), the positioning strips extend into the inside of the sliding grooves, a set of meshing teeth are provided on one side of the blocking plate (402), two first gears are installed on the outer side of the drive shaft of the second electric motor (401), the first gears are meshed with the meshing teeth, and a set of transparency light-emitting and detection components are installed inside the gantry (101).

4. The plastic product defect detection device according to claim 1, wherein A second gear is installed on the drive shaft of the first electric motor (201) at the upper position. Two symmetrically distributed positioning brackets (202) are installed at the middle position of the stabilizing body (1). Two sets of sliding grooves are opened at the bottom position of the stabilizing body (1). The sliding grooves are of T-shaped structure. A sliding bar is arranged at the inner side position of the positioning bracket (202). The sliding bar passes through the inside of the sliding groove. A rack is arranged at the inner side position of the positioning bracket (202). The second gear meshes with the rack. A vertical clamping plate (203) is installed on one side above the positioning bracket (202). The first electric motor (201), the push rod (20101), the positioning bracket (202), and the clamping plate (203) cooperate with each other to jointly form a clamping mechanism (2). Two horizontal sliding holes are opened on one side above the positioning bracket (202). Two sliding rods are arranged on one side of the clamping plate (203). The sliding rods pass through the inside of the sliding holes. A support spring and a snap spring are installed on the outer side of the sliding rods.

5. The plastic product defect detection device according to claim 1, wherein A threaded hole and a sliding hole are opened at the middle position of the gantry (101). The threaded hole and the sliding hole are respectively of vertical structure. A manually threaded rod (601) is inserted into the threaded hole. A first positioning rod (603) is inserted into the sliding hole. A visually detecting device (602) connected by rotation is installed at the bottom of the manually threaded rod (601). The manually threaded rod (601), the visually detecting device (602), and the first positioning rod (603) cooperate with each other to jointly form a visual detection mechanism (6). The bottom of the first positioning rod (603) is firmly connected to the upper part of the visually detecting device (602).

6. The plastic product defect detection device according to claim 1, wherein Positioning blocks (50201) are respectively arranged on both sides of the lifting plate (502). An air pressure detector (508) is installed above the lifting plate (502). A drainage sleeve (504) is installed at the bottom position on one side of the lifting plate (502). A drainage pipe is installed between the drainage sleeve (504) and the air pressure detector (508). Two stabilizing grooves are opened at the bottom position of the air pressure detector (508). The positioning blocks (50201) pass through the inside of the stabilizing grooves. A support spring is installed at the bottom of the air pressure detector (508). The third electric motor (501), the lifting plate (502), the positioning blocks (50201), the automatic threaded rod (503), the drainage sleeve (504), the positioning housing (505), the first rubber block (506), the second rubber block (507), and the air pressure detector (508) cooperate with each other to jointly form an air pressure detection mechanism (5).

7. The plastic product defect detection device according to claim 1, wherein On both sides of the locking frame (701), a sliding hole is respectively opened. The second positioning rod (702) passes through the inside of the sliding hole. A support spring and a snap ring are installed on the outer side of the second positioning rod (702). A horizontal sliding hole is opened on one side of the lifting plate (502). A locking block is provided at the middle position on the inner side of the locking frame (701). An inclined surface is provided at the bottom of the locking block. An installation block is provided above the drainage sleeve (504). A vertical installation hole is opened on one side of the lifting plate (502). The installation block passes through the inside of the installation hole. A card slot is opened on one side of the installation block.

8. The plastic product defect detection device according to claim 6, wherein A positioning housing (505) is installed at the bottom position of the drainage sleeve (504). The upper part of the positioning housing (505) extends into the inside of the drainage sleeve (504). A second rubber block (507) is installed at the inner side of the bottom of the positioning housing (505). A positioning groove is opened at the upper position of the positioning housing (505). A first rubber block (506) is installed at the positioning groove at the upper position of the positioning housing (505). The first rubber block (506) is in contact with the inner wall of the drainage sleeve (504). A set of sealing grooves is opened on the outer side surface of the first rubber block (506).

9. The plastic product defect detection device according to claim 6, wherein A through hole that communicates with each other is respectively opened at the middle positions of the drainage sleeve (504), the positioning housing (505), the first rubber block (506), and the second rubber block (507). A support spring is installed between the drainage sleeve (504) and the positioning housing (505).

10. The plastic product defect detection device according to claim 1, wherein A horizontal sliding hole is opened at the bottom position of the positioning frame (202). A push rod (20101) is inserted into the inside of the sliding hole. The push rod (20101) is aligned with the push button switch (3). A support spring and a positioning snap ring are installed on the outer side of the push rod (20101).

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