ABS (Acrylonitrile Butadiene Styrene) product quality detection streamline

Abstract

The invention discloses an ABS (Acrylonitrile Butadiene Styrene) product quality detection streamline in the technical field of industrial product production detection, and aims to solve the problems of complex manual detection process and low efficiency in the prior art. A coil height detection device, an air tightness detection device, an EOL detection device and an appearance detection device are arranged on the rack in the conveying direction of the conveying line, the conveying line is used for conveying a tray bearing ABS products, and a plurality of ABS products can be positioned and placed on the tray. The ABS product coil height detection device is used for automatically completing coil height detection, air tightness detection, appearance detection and EOL detection of ABS products, manual participation is not needed in the whole process except for feeding and discharging, the complex manual operation process is simplified, and the production detection efficiency can be improved.

Description

Technical Field

[0001] The invention relates to an ABS product quality inspection flow line, belonging to the technical field of industrial product production inspection. Background Art

[0002] ABS (Acrylonitrile-Butadiene-Styrene) is a material commonly used in the manufacture of engineering plastic parts. It has good impact resistance, heat resistance and processability. After ABS products are crimped on PCB, the traditional method is to manually observe their appearance, air tightness test and final test (EOL). Only products that have completed the test can be identified as qualified products for discharge. In the traditional method, ABS products are replaced one by one on the corresponding testing machine manually. This method requires more manpower, complex personnel coordination, and the testing process is difficult to track and the testing quality is difficult to guarantee. In order to save the complex work process of manpower and improve the production and testing efficiency, there is an urgent need for an automated assembly line equipment for testing the quality of the above ABS products. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an ABS product quality inspection streamline for automatically completing the coil height inspection, air tightness inspection, appearance inspection and EOL inspection processes of ABS products. Except for loading and unloading, no manual participation is required throughout the process, which simplifies the complex manual operation process and helps to improve production inspection efficiency.

[0004] To achieve the above object, the present invention is implemented by adopting the following technical solutions: The present invention provides an ABS product quality inspection flow line, comprising a frame and a conveyor line arranged on the frame, wherein a coil height detection device, an air tightness detection device, an EOL detection device and an appearance detection device are arranged on the frame and along the conveying direction of the conveyor line, and the conveyor line is used to transport a pallet carrying ABS products, and a plurality of ABS products can be positioned and placed on the pallet, wherein: The detection ends of the coil height detection device can be moved closer to or farther from the tray to detect the coil height on the ABS product; The detection ends of the air tightness detection device can be moved closer to or farther from the pallet to detect the air tightness of the ABS product; The detection end of the EOL detection device can be close to or far away from the tray, and can at least be configured to detect the electrical performance of the ABS product; The appearance inspection device is used to inspect the surface shape or defects of ABS products.

[0005] Specifically, it also includes a reflux flow line and a loading and unloading transfer mechanism. The reflux flow line is used to transport the pallet of the ABS product taken away to the loading end of the ABS product. The reflux flow line is arranged above or below the conveyor line. Two loading and unloading transfer mechanisms are arranged on both sides of the conveyor line respectively. The loading and unloading transfer mechanism includes a first mounting frame. The first mounting frame is provided with a lifting module. The lifting module is used to drive the lifting movement of the pallet. The pallet is provided with a first belt conveyor assembly. The first belt conveyor assembly is used to connect the pallet to the conveyor line and the reflux flow line or release the pallet.

[0006] Specifically, the coil height detection device includes a second mounting frame and a first mounting plate mounted on the second mounting frame, a plurality of picking column heads are slidably mounted on the first mounting plate in a vertical direction, the second mounting frame is provided with a displacement sensor located above each picking column head, and the frame is provided with a first lifting component for lifting the pallet so that the ABS product on the pallet contacts the picking column head.

[0007] Specifically, the first mounting plate is horizontally slidably matched with the second mounting frame, and the second mounting frame is provided with a pushing mechanism, and the pushing mechanism is used to press or lock the first mounting plate in position.

[0008] Specifically, the air tightness detection device includes a third mounting frame, a second mounting plate is provided on the third mounting frame, a plurality of air path connecting pipes are provided on the second mounting plate, an air hole connected to the air path connecting pipe is provided at the bottom of the second mounting plate, and a second lifting component for lifting the pallet so that the opening surface of the ABS product on the pallet is in contact with the bottom surface of the second mounting plate is provided on the frame.

[0009] Specifically, the EOL detection device includes a fourth mounting frame and a third mounting plate arranged on the fourth mounting frame, a plurality of probe assemblies for electrically connecting to the ABS product are arranged below the third mounting plate, and a third lifting assembly for lifting the pallet so that the wiring terminals of the ABS product on the pallet are electrically connected to the probe assembly is arranged on the frame.

[0010] Specifically, the third mounting plate is also provided with a positioning rod for positioning the ABS product. The bottom surface of the positioning rod is in the shape of an inverted frustum or cone, and is used to be inserted into a positioning hole opened in a tray or inserted in a positioning port opened on the surface of the ABS product. The positioning rod is slidably suspended on the hanging plate of the third mounting plate in a vertical direction.

[0011] Specifically, the appearance inspection device includes a three-axis mobile module, the output end of the three-axis mobile module is used for the fourth mounting plate to translate or lift in space, the fourth mounting plate is provided with a laser scanning component and a carrier, the frame is provided with an NG material recovery line, the carrier is used to place unqualified materials on the NG material recovery line and to place qualified material products on the finished product flow line station, and the frame is also provided with a camera inspection component.

[0012] Specifically, the conveyor line includes a first streamline and a second streamline arranged in upper and lower layers, the first streamline and the second streamline are both equipped with an air tightness detection device and an EOL detection device with the same structure, both ends of the first streamline or the second streamline are equipped with a material dividing mechanism, the material dividing mechanism includes a vertical moving module and a connecting frame arranged at the output end of the vertical moving module, the connecting frame is provided with a second belt conveyor assembly, the second belt conveyor assembly is used to convey the ABS products that have completed the coil height detection to the first streamline and the second streamline respectively, or the second belt conveyor assembly is used to convey the ABS products that have completed the EOL detection on the first streamline and the second streamline to the position of the appearance detection device.

[0013] Specifically, both sides of the second belt conveyor assembly are provided with a through-beam photoelectric sensor for detecting whether the pallet has completely passed through the second belt conveyor assembly.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an automated inspection streamline for ABS products, and can simultaneously perform coil height inspection, air tightness inspection, appearance inspection, EOL inspection, etc. on the ABS products on the streamline, without the need for manual inspection of each product. The automated process has a high coverage rate, which is conducive to improving inspection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the ABS detection streamline provided by an embodiment of the present invention; Figure 2 is a front view of an ABS detection streamline provided by an embodiment of the present invention; Figure 3 is a front view of a coil height detection device and an air tightness detection device provided by an embodiment of the present invention; Figure 4 It is a partial structural schematic diagram of a coil height detection device and an air tightness detection device provided in an embodiment of the present invention; Figure 5 The present invention Figure 4 An enlarged view of the structure at location A of the airtightness detection device provided in the embodiment; Figure 6 The present invention Figure 4An enlarged view of the structure at position B of the airtightness detection device provided in the embodiment; Figure 7 is a partial structural schematic diagram of an airtightness detection device provided in an embodiment of the present invention; Figure 8 is a front view of an EOL detection device provided by an embodiment of the present invention; Fig. 9 is a partial structural diagram of an EOL detection device provided by an embodiment of the present invention; Fig.10 It is a schematic diagram of the overall structure of the loading and unloading transfer mechanism provided by an embodiment of the present invention; Fig.11 is a schematic diagram of the overall structure of the appearance inspection device provided by an embodiment of the present invention; Reference numerals: 1. conveying line; 101. one flow line; 102. two flow lines; 2. coil height detection device; 201. second mounting frame; 202. first mounting plate; 203. pick-up column head; 204. displacement sensor; 205. jacking mechanism; 206. first jacking assembly; 3. air tightness detection device; 301. third mounting frame; 302. second mounting plate; 303. gas path connecting pipe; 304. second jacking assembly; 4. EOL detection device; 401. fourth mounting frame; 402. third mounting plate; 403. probe assembly; 404. positioning rod; 40 5. The third lifting assembly; 406. The hanging plate; 5. The appearance inspection device; 501. The three-axis moving module; 502. The fourth mounting plate; 503. The transporter; 504. The laser scanning assembly; 505. The camera detection assembly; 506. The NG material recovery line; 6. The loading and unloading material transfer mechanism; 601. The first mounting frame; 602. The lifting module; 603. The support plate; 604. The first belt conveyor assembly; 7. The reflux flow line; 8. The material dividing mechanism; 801. The vertical moving module; 802. The connecting frame; 803. The second belt conveyor assembly; 804. The opposing photoelectric sensor; 9. The pallet. DETAILED DESCRIPTION

[0016] The present invention will be further described below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0018] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances. Example:

[0019] An ABS product quality inspection streamline provided by an embodiment of the present invention is used to automatically complete the coil height inspection, air tightness inspection, appearance inspection and EOL inspection processes of ABS products. No manual participation is required throughout the entire process except for loading and unloading, which simplifies the complex manual operation process and helps to improve production inspection efficiency. In order to realize the function of the inspection streamline, the inspection streamline is provided here to include a frame and a conveyor line 1 arranged on the frame. Specifically, a coil height inspection device 2, an air tightness inspection device 3, an EOL (End-of-Line) inspection device 4 and an appearance inspection device 5 are arranged on the frame and along the conveying direction of the conveyor line 1. The conveyor line 1 here is used to transport a pallet 9 carrying ABS products, which can be referred to Figure 1Or as shown in other visible drawings, the conveyor line 1 preferably includes belts arranged in two compartments, and the tray 9 is lifted up by the two belts on both sides at the same time and transported forward by the transmission action of the belts. The tray 9 arranged here can be positioned to place a number of ABS products, such as using a positioning port or a positioning surface to match the corresponding ABS product, wherein: the detection end of the coil height detection device 2 can approach or move away from each other relative to the tray 9 to detect the coil height on the ABS product. The specific method can be to use a contact or distance measurement method to judge the height of the coil. If the height of the ABS product is qualified, enter the next inspection station; the detection end of the airtightness detection device 3 can approach or move away from each other relative to the tray 9 to detect the airtightness of the ABS product. In this method, the approaching action should be manifested as the opening of the ABS product being able to be sealed and closed by the detection end, so that the method of exhaustion or ventilation can be used to detect whether there is leakage inside the ABS product, and the air pressure change detection is used to judge whether the workpiece has leakage, so as to avoid The workpiece cannot adapt to a variety of dust-proof and moisture-proof environments; the detection end of the EOL detection device 4 can be close to or away from the tray 9, and can at least be configured to detect the power-on performance of the ABS product. After the final power-on detection test is passed, it is proved that the product can be used normally. An appearance detection device 5 is provided to detect the surface shape or defects of the ABS product so as to remove unqualified products. In the above operation mode, the ABS products are all placed inside the tray 9. In order to make the ABS products and the corresponding inspection stations close to or contact each other, a corresponding lifting mechanism can be set at the middle position of the belts on both sides to lift the tray 9. In order to avoid damage to the ABS product or equipment structural components caused by hard contact, it should be noted that a certain elasticity or deformation margin should be provided during the test to avoid problems in equipment operation or damage to the product due to lifting position errors. After the detection action is completed, the tray 9 is put back on the conveyor line 1, so that the ABS products can flow to the next inspection station in an orderly manner.

[0020] An ABS product quality inspection flow line provided in an embodiment of the present invention is used to transport the empty pallet 9 back to facilitate manual loading after the inspection work is completed. In a preferred embodiment, the device also includes a return flow line 7 and a loading and unloading transfer mechanism 6. The return flow line 7 is used to transport the pallet 9 from which the ABS product is taken away to the loading end (or a position close to the loading side) of the ABS product. Figure 1 As shown, the return flow line 7 is arranged above or below the conveying line 1, and two loading and unloading transfer mechanisms 6 are arranged, and the two loading and unloading transfer mechanisms 6 are arranged on both sides of the conveying line 1, respectively. Fig.10As shown, the loading and unloading transfer mechanism 6 includes a first mounting frame 601, on which a lifting module 602 is provided, and the lifting module 602 is used to drive the pallet 603 to move up and down, and the pallet 603 is provided with a first belt conveyor assembly 604, and the first belt conveyor assembly 604 is used to receive the pallet 9 or release the pallet 9 with the conveyor line 1 and the return flow line 7. Figure 1 As shown, by setting a loading and unloading transfer mechanism 6 on each side of the conveyor line 1, one of the mechanisms can pick up the empty pallet 9 on the conveyor line 1 and transport it to the feed end of the return flow line 7 for reverse transport. The other loading and unloading transfer mechanism 6 is set at the feed end of the conveyor line 1. After receiving the empty pallet 9, it lifts up and releases the empty pallet 9, so that the conveyor line 1 can be inspected after manual loading. That is, the two loading and unloading transfer mechanisms 6 can realize the circulation of the pallets 9 of the conveyor line 1 and the return flow line 7, and one pallet 9 can carry multiple ABS products at the same time, thereby realizing efficient transportation and inspection of ABS products, which has a good market prospect. Among them, the output end of the first belt conveyor assembly 604 of each loading and unloading transfer mechanism 6 is provided with a blocking mechanism, which can be used to block and position the pallet 9, and an infrared safety grating is preferably provided above to avoid accidental injury to personnel due to malfunction of the mechanism during manual loading.

[0021] An ABS product quality inspection streamline provided by an embodiment of the present invention specifically provides a coil height detection device 2. Specifically, the coil height detection device 2 may include a second mounting frame 201 and a first mounting plate 202 mounted on the second mounting frame 201. Figure 3 and Figure 4As shown, a plurality of pick-up studs 203 are slidably mounted on the first mounting plate 202 in the vertical direction, and each pick-up stud 203 is used to pick up the position deformation caused by the coil on the ABS product, that is, each pick-up stud 203 can correspond to the corresponding coil position on the ABS product after the ABS product is positioned. In addition, a displacement sensor 204 is provided on the second mounting frame 201 and above each pick-up stud 203, and a first jacking sensor 204 is provided on the frame for lifting the tray 9 so that the ABS product on the tray 9 contacts the pick-up stud 203. Lifting component 206, when detecting the height position of the coil, the tray 9 is first positioned at the specified position through the blocking effect of the blocking mechanism, and then the first lifting component 206 drives the tray 9 to lift as a whole and make the coil of the ABS product contact with each picking column head 203. The coil positions at different heights will cause the ups and downs of different picking column heads 203 to change at different positions, thereby feeding back the position change information to the displacement sensor 204, so as to detect the height of the ABS product coil. After the detection is completed, the blocking mechanism is withdrawn, and the tray 9 is put back on the conveyor line 1 to continue conveying. In order to facilitate the installation and assembly of the first mounting plate 202 and the mechanism thereon, the first mounting plate 202 can be arranged to slide horizontally with the second mounting frame 201, and a pushing mechanism 205 can be provided on the second mounting frame 201. The pushing mechanism 205 is used to press or lock the first mounting plate 202 in position, such as Figure 3 As shown, the pushing mechanism 205 can be configured as a cylinder, and the output end of the cylinder is used to press the first mounting plate 202 to lock the position of the first mounting plate 202 .

[0022] An ABS product quality inspection flow line provided by the embodiment of the present invention specifically provides an airtightness inspection device 3, such as Figure 3-Figure 7As shown, specifically, the air tightness detection device 3 is provided here, including a third mounting frame 301, a second mounting plate 302 is provided on the third mounting frame 301, a plurality of air path connecting pipes 303 are provided on the second mounting plate 302, and an air hole connected to the air path connecting pipe 303 is provided at the bottom of the second mounting plate 302, and a second lifting component 304 for lifting the tray 9 so that the opening surface of the ABS product on the tray 9 is matched with the bottom surface of the second mounting plate 302 is provided on the frame, and the second lifting component 304 is used to make the opening surface of the ABS product contact with the bottom surface of the second mounting plate 302, so that the area in the opening can be connected with the air hole below the second mounting plate 302, and during the air tightness detection, the air pipe is used to draw vacuum or provide high-pressure gas, and the change of air pressure in the closed space is detected at the same time, so as to quickly realize the air tightness detection of the product, and after the detection is completed, the tray 9 can be put back on the conveyor line 1. During contact, sufficient pressure needs to be provided to ensure the sealing effect, but a hard contact pressure may be too large and cause damage to the equipment or product, so elastic contact is preferably provided between the second mounting plate 302 and the third mounting frame 301 .

[0023] An ABS product quality inspection flow line provided by an embodiment of the present invention specifically provides an EOL inspection device 4, such as Figure 8 and Fig. 9 As shown, the EOL detection device 4 is provided here and includes a fourth mounting frame 401 and a third mounting plate 402 arranged on the fourth mounting frame 401. A plurality of probe assemblies 403 for electrically connecting to the ABS product are arranged below the third mounting plate 402. A third lifting assembly 405 for lifting the tray 9 so that the connection terminals of the ABS product on the tray 9 are electrically connected to the probe assemblies 403 is arranged on the frame. When working, the third lifting assembly 405 connects the connection terminals of the ABS product to the corresponding probe assemblies 403 (or other possible connection ports), and tests whether the product can be put into normal use by powering on. After the detection is completed, the tray 9 can be put back to the conveyor line 1. In some preferred embodiments, in order to prevent the wiring terminal from not being able to properly position its probe assembly 403, a positioning rod 404 for positioning the ABS product may be further provided on the third mounting plate 402. Specifically, the bottom surface of the positioning rod 404 is in the shape of an inverted frustum or cone, which is used to be inserted into the positioning hole provided in the tray 9 or inserted into the positioning port provided on the surface of the ABS product. After the tray 9 is lifted, the positioning rod 404 can place the ABS product in a relatively accurate detection position, and its tip provides a certain position tolerance for the ABS product. In order to prevent the positioning rod 404 from being inserted too deeply and causing damage to the product, the positioning rod 404 may be arranged to slide and be suspended on the hanging plate 406 of the third mounting plate 402 in the vertical direction, so that the positioning rod 404 has a certain amount of activity margin in the vertical direction to prevent excessive pressure from causing pressure damage to the product.

[0024] An ABS product quality inspection streamline provided by an embodiment of the present invention specifically provides an appearance inspection device 5. Specifically, the device includes a three-axis moving module 501, and the output end of the three-axis moving module 501 is used for the fourth mounting plate 502 to translate or lift in space, such as Fig.11 As shown, the fourth mounting plate 502 is provided with a laser scanning component 504 and a handling arm 503. The laser scanning component 504 can scan the surface of the ABS product for defects by movement, and the handling arm 503 can take the ABS product components by lifting, so as to finally take and classify the ABS products. In order to recycle waste materials, an NG material recovery line 506 is provided on the frame. Specifically, the handling arm 503 is used to place unqualified materials on the NG material recovery line 506 and to place qualified material products on the finished product flow line station. The frame is also provided with a camera detection component 505 for taking pictures and detecting the overall appearance of the ABS product.

[0025] An ABS product quality inspection streamline provided by an embodiment of the present invention takes into account that an airtightness inspection device 3 and an EOL inspection device 4 need to wait for a long time when working. In order to improve the inspection efficiency, a conveyor line 1 can be provided including a first streamline 101 and a second streamline 102 arranged in upper and lower layers, wherein the first streamline 101 and the second streamline 102 are both configured with an airtightness inspection device 3 and an EOL inspection device 4 of the same structure. By means of upper and lower layers, multiple inspection stations can be added while saving equipment space, so that a few more stations can be added in the slow inspection steps to improve the overall production inspection efficiency, thereby improving the actual production capacity. In order to allow the first streamline 101 or the second streamline 102 to load and unload materials normally, such as Figure 2 As shown, a material distribution mechanism 8 is arranged at both ends of the second streamline 102 (the second streamline 102 is a branch conveyor line, and the first streamline 101 is a unified main conveyor line), and the material distribution mechanism 8 includes a vertical moving module 801 and a connecting frame 802 arranged at the output end of the vertical moving module 801, and a second belt conveyor assembly 803 is arranged on the connecting frame 802. The second belt conveyor assembly 803 is used to convey the ABS products that have completed the coil height detection to the first streamline 101 and the second streamline 102 respectively, or the second belt conveyor assembly 803 is used to convey the ABS products that have completed the EOL detection on the first streamline 101 and the second streamline 102 to the position of the appearance detection device 5 (that is, on the first streamline 101 at the position of the appearance detection device 5). In this way, the actual detection efficiency can be improved by providing multiple detection stations while saving the equipment volume, and it has good application prospects.

[0026] An ABS product quality inspection streamline is provided in an embodiment of the present invention. Both sides of the second belt conveyor assembly 803 are provided with a through-photoelectric sensor 804 for detecting whether the pallet 9 has completely passed through the second belt conveyor assembly 803, so as to avoid the pallet 9 from falling due to the malfunction of the second belt conveyor assembly 803 after the pallet 9 is halfway through the conveyance. In this device, each workstation can adopt this mechanism to detect whether the position of the pallet 9 meets the requirements of the next processing. In order to avoid deviation of the material position on the pallet 9, corresponding through-photoelectric sensors can also be set at each processing position of the pallet 9 to detect whether there is material on the pallet 9 and whether the material has an abnormal position, etc. Specific other methods are not limited here.

[0027] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An ABS product quality inspection line, characterized in that: The invention comprises a frame and a conveyor line (1) arranged on the frame, wherein a coil height detection device (2), an air tightness detection device (3), an EOL detection device (4) and an appearance detection device (5) are arranged on the frame and along the conveying direction of the conveyor line (1), and the conveyor line (1) is used to convey a pallet (9) carrying ABS products, and a plurality of ABS products can be positioned and placed on the pallet (9), wherein: The detection end of the coil height detection device (2) can be moved closer to or farther from the tray (9) to detect the coil height on the ABS product; The detection end of the air tightness detection device (3) can be moved closer to or farther away from the tray (9) to detect the air tightness of the ABS product; The detection end of the EOL detection device (4) can be moved closer to or farther from the tray (9), and can at least be configured to detect the electrical performance of the ABS product; The appearance detection device (5) is used to detect the surface shape or defects of ABS products.

2. An ABS product quality inspection flow line according to claim 1, characterized in that: The invention also comprises a return flow line (7) and a loading and unloading transfer mechanism (6), wherein the return flow line (7) is used to transport the pallet (9) from which the ABS product is taken away to the loading end of the ABS product, the return flow line (7) is arranged above or below the conveyor line (1), two loading and unloading transfer mechanisms (6) are arranged, and the two loading and unloading transfer mechanisms (6) are arranged on both sides of the conveyor line (1), respectively, and the loading and unloading transfer mechanism (6) comprises a first mounting frame (601), the first mounting frame (601) is provided with a lifting module (602), the lifting module (602) is used to drive the pallet (603) to move up and down, the pallet (603) is provided with a first belt conveyor assembly (604), and the first belt conveyor assembly (604) is used to receive the pallet (9) or release the pallet (9) to the conveyor line (1) and the return flow line (7).

3. The ABS product quality inspection flow line according to claim 1, characterized in that: The coil height detection device (2) comprises a second mounting frame (201) and a first mounting plate (202) mounted on the second mounting frame (201); a plurality of pick-up column heads (203) are slidably mounted on the first mounting plate (202) in a vertical direction; a displacement sensor (204) is provided on the second mounting frame (201) and is located above each pick-up column head (203); and a first lifting component (206) for lifting a tray (9) so that an ABS product on the tray (9) contacts the pick-up column head (203) is provided on the frame.

4. The ABS product quality inspection flow line according to claim 3 is characterized in that: The first mounting plate (202) and the second mounting frame (201) are horizontally slidably matched, and the second mounting frame (201) is provided with a pushing mechanism (205), and the pushing mechanism (205) is used to press or lock the first mounting plate (202) in place.

5. The ABS product quality inspection flow line according to claim 1, characterized in that: The air tightness detection device (3) comprises a third mounting frame (301), a second mounting plate (302) being provided on the third mounting frame (301), a plurality of air path connecting pipes (303) being provided on the second mounting plate (302), an air hole being provided at the bottom of the second mounting plate (302) being connected to the air path connecting pipes (303), and a second lifting component (304) being provided on the frame for lifting the tray (9) so that the opening surface of the ABS product on the tray (9) is in contact with the bottom surface of the second mounting plate (302).

6. The ABS product quality inspection flow line according to claim 1, characterized in that: The EOL detection device (4) comprises a fourth mounting frame (401) and a third mounting plate (402) arranged on the fourth mounting frame (401); a plurality of probe assemblies (403) for electrically connecting to ABS products are arranged below the third mounting plate (402); and a third lifting assembly (405) for lifting the tray (9) so that the connection terminals of the ABS products on the tray (9) are electrically connected to the probe assemblies (403) is arranged on the frame.

7. The ABS product quality inspection flow line according to claim 6, characterized in that: The third mounting plate (402) is also provided with a positioning rod (404) for positioning the ABS product. The bottom surface of the positioning rod (404) is in the shape of an inverted frustum or cone and is used to be inserted into a positioning hole provided in the tray (9) or inserted into a positioning opening provided on the surface of the ABS product. The positioning rod (404) is slidably suspended in a vertical direction on a suspension plate (406) of the third mounting plate (402).

8. The ABS product quality inspection flow line according to claim 1, characterized in that: The appearance inspection device (5) comprises a three-axis moving module (501), the output end of the three-axis moving module (501) is used for the fourth mounting plate (502) to move horizontally or vertically in space, the fourth mounting plate (502) is provided with a laser scanning component (504) and a handling hand (503), the frame is provided with an NG material recovery line (506), the handling hand (503) is used to place unqualified materials on the NG material recovery line (506) and to place qualified material products on a finished product flow line station, and the frame is also provided with a camera inspection component (505).

9. An ABS product quality inspection flow line according to any one of claims 1 to 8, characterized in that: The conveyor line (1) comprises a first streamline (101) and a second streamline (102) arranged in upper and lower layers, the first streamline (101) and the second streamline (102) are both provided with an air tightness detection device (3) and an EOL detection device (4) of the same structure, and both ends of the first streamline (101) or the second streamline (102) are provided with a material distribution mechanism (8), the material distribution mechanism (8) comprising a vertical moving module (801) and a plurality of output ports provided at the output of the vertical moving module (801). A connecting frame (802) is provided at one end of the connecting frame (802), wherein a second belt conveyor assembly (803) is provided on the connecting frame (802), and the second belt conveyor assembly (803) is used to convey ABS products that have completed coil height detection to the first flow line (101) and the second flow line (102), respectively, or the second belt conveyor assembly (803) is used to convey ABS products that have completed EOL detection on the first flow line (101) and the second flow line (102) to the position of the appearance detection device (5).

10. An ABS product quality inspection flow line according to claim 9, characterized in that: Both sides of the second belt conveyor assembly (803) are provided with a photoelectric sensor (804) for detecting whether the tray (9) has completely passed through the second belt conveyor assembly (803).

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