Automatic production line for hot melting and appearance detection of plastic parts

Abstract

The application discloses a kind of plastic piece hot melting and appearance detection automation assembly line, including hot press, six-axis robot, visual detection platform, assembly line platform, fixed placement point, electric control system, the assembly line platform includes first belt conveying mechanism and second belt conveying mechanism, the first belt conveying mechanism is sent to six-axis robot product to be hot pressed, the six-axis robot is taken after hot pressing product on the first belt conveying mechanism, and is placed in hot press processing position and waits hot pressing after carrying and placing.This application realizes hot pressing and automatic appearance detection by the mutual cooperation of hot press, six-axis robot, visual detection platform, assembly line platform, fixed placement point and electric control system, shortens the working time, improves work efficiency, accuracy, consistency and safety, cooperatively controls using electric control system, is convenient for the statistical management and analysis of detection data, reduces the difficulty of production management.

Description

Technical Field

[0001] This invention relates to an automated production line, and more particularly to an automated production line for hot melting and appearance inspection of plastic parts. Background Technology

[0002] Plastic hot melt technology is a technique that uses molten plastic to coat, encapsulate, fill, bond, and package materials. Its principle is to use the high viscosity of molten plastic to bond two or more plastic blocks together to form a single unit. Compared to other plastic processing technologies, plastic hot melt technology offers advantages such as fast processing speed, high production efficiency, and low production costs, and therefore has been widely used in modern manufacturing.

[0003] Automated appearance inspection is primarily used to detect the appearance features and defects of products. These devices use computer vision technology and image processing algorithms to capture images or videos of products, then analyze and compare them to perform defect detection, size and shape inspection, screen printing quality inspection, assembly error detection, and surface quality assessment.

[0004] Traditional manual appearance inspection methods are inefficient, time-consuming, lack accuracy and consistency, have poor safety, and are inconvenient for statistical management and analysis of inspection data, which increases the difficulty of production management and reduces its efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an automated production line for hot melting and appearance inspection of plastic parts, so as to solve the above-mentioned technical problems.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] An automated production line for hot-melt and appearance inspection of plastic parts includes a hot press, a six-axis robot, a vision inspection platform, a production line platform, fixed placement points, and an electrical control system. The production line platform includes a first belt conveyor mechanism and a second belt conveyor mechanism. The first belt conveyor mechanism conveys products to be hot-pressed to the six-axis robot. The six-axis robot picks up the products to be hot-pressed from the first belt conveyor mechanism, transports them, and places them on the processing position of the hot press to await hot pressing. The hot press performs hot pressing on the products. After hot pressing is completed, the six-axis robot picks up the hot-pressed products, transports them, and places them on the inspection position of the vision inspection platform to await inspection. After product inspection is completed, the six-axis robot picks up the inspected products, transports them, and places them on the second belt conveyor mechanism or the fixed placement point. The electrical control system is electrically connected to the hot press, the six-axis robot, the vision inspection platform, and the production line platform for coordinated control.

[0008] Based on the above technical solution, the six-axis robot is equipped with a camera for product recognition. The assembly line platform also includes a third belt conveyor mechanism, a frame, a dual-axis servo motor, a first gear, and a second gear. A first belt conveyor mechanism is mounted on the upper front part of the frame, and a second belt conveyor mechanism is mounted on the upper rear part. The third belt conveyor mechanism is mounted below the first belt conveyor mechanism on the frame. The first belt conveyor mechanism includes a first support roller, a second support roller, and a first conveyor belt. The second belt conveyor mechanism includes a third support roller, a fourth support roller, and a second conveyor belt. The third belt conveyor mechanism includes a fifth support roller, a sixth support roller, and a third conveyor belt. The frame is rotatably connected to the first, second, third, fourth, fifth, and sixth support rollers in the left-right horizontal direction. The No. 1 and No. 2 support rollers jointly drive the No. 1 conveyor belt through friction; the No. 3 and No. 4 support rollers jointly drive the No. 2 conveyor belt through friction; and the No. 5 and No. 6 support rollers jointly drive the No. 3 conveyor belt through friction. The No. 1 and No. 5 support rollers are each coaxially fixed with a No. 1 gear, which meshes with the No. 1 gear in a 1:1 ratio. A dual-axis servo motor is fixed to the frame. The shaft of the dual-axis servo motor is coaxially fixed to the No. 6 support roller, and a No. 2 gear is coaxially fixed to the shaft. The No. 3 support roller is also coaxially fixed with a No. 2 gear, which meshes with the No. 2 gear in a 1:1 ratio. A gap exists between the No. 1 and No. 2 conveyor belts for the products to be hot-pressed to fall downwards. The No. 3 conveyor belt corresponds vertically to this gap. The dual-axis servo motor is electrically connected to the electrical control system.

[0009] Based on the above technical solution, the assembly line platform further includes an electric lifting mechanism, a hopper, a guide seat, a first partition, a lifting seat, and a tension spring. An electric lifting mechanism is installed at the front of the frame, and the electric lifting mechanism is equipped with a hopper. The electric lifting mechanism controls the up-and-down movement of the hopper to correspond with the first or third belt conveyor mechanism. A guide seat is fixed at the front of the frame, and a vertical first partition is slidably connected to the guide seat. A horizontal lifting seat is fixed at the bottom of the first partition. The lifting seat cannot pass through the guide seat, and a tension spring is fixed between its rear and the frame. Under the elastic tension of the tension spring, the lifting seat tends to move upwards. The electric lifting mechanism is electrically connected to the electrical control system. The bottom of the hopper can contact the top of the first partition. When the bottom of the hopper contacts the top of the first partition, the hopper, driven by the electric lifting mechanism, can press down on the first partition and move downwards together.

[0010] Based on the above technical solution, the electric lifting mechanism includes a base, a first electric push rod, a second electric push rod, a first support seat, a second support seat, and a guide groove. A base is located at the lower front of the frame. Vertical first and second electric push rods are fixed sequentially from front to back at the top of the base. A first support seat is fixed to the top of the push rod of the first electric push rod, and a second support seat is fixed to the top of the push rod of the second electric push rod. The second support seat is hinged to the hopper, and its virtual hinge axis is horizontal. The first support seat has corresponding horizontal guide grooves on both its left and right sides. Smooth rods are fixed to the left and right ends of the front of the hopper. The two smooth rods are coaxially arranged and slidably connected to the two guide grooves. The first and second electric push rods are electrically connected to the electrical control system. When the push rod of the first electric push rod moves up and down relative to the push rod of the second electric push rod, the hopper can swing up and down along the second support seat through the cooperation of the guide groove and the smooth rod.

[0011] Based on the above technical solution, a vertical second partition is fixed inside the frame. The second partition is located below and behind the gap, and above and behind the third conveyor belt.

[0012] Compared with the prior art, the present invention has the following advantages: The present invention achieves hot pressing and automated appearance inspection through the cooperation of hot press, six-axis robot, vision inspection platform, production line platform, fixed placement point and electrical control system, which shortens the working time and improves work efficiency, accuracy, consistency and safety. The use of electrical control system for collaborative control facilitates statistical management and analysis of inspection data, reduces the difficulty of production management and improves the efficiency of production management.

[0013] By controlling the extension and retraction of the electric lifting mechanism, not only is it possible to avoid the hassle of workers moving products from the third belt conveyor to the first belt conveyor, making it more convenient to use and more efficient, but it also allows the hopper to tilt, reducing product jamming and improving the smoothness of product movement, thereby reducing the need for human intervention and improving work efficiency. Attached Figure Description

[0014] Figure 1 This is a simplified top-view diagram of the present invention.

[0015] Figure 2 This is an isometric structural diagram of the hot press, six-axis robot, vision inspection platform, and fixed placement point of the present invention.

[0016] Figure 3 This is an isometric structural diagram of the production line platform of the present invention.

[0017] Figure 4 This is a partial right-side cross-sectional view of the assembly line platform of the present invention.

[0018] In the diagram: 1. Hot press; 2. Six-axis robot; 3. Vision inspection platform; 4. Assembly line platform; 5. Fixed placement point; 7. Third belt conveyor mechanism; 8. Frame; 9. Dual-axis servo motor; 10. Gear No. 1; 11. Gear No. 2; 12. Support roller No. 1; 13. Support roller No. 2; 14. Conveyor belt No. 1; 15. Support roller No. 3; 16. Support roller No. 4; 17. Conveyor belt No. 2; 18. Support roller No. 5; 19. 20. Support roller No. 6, 21. Conveyor belt No. 3, 22. Electric lifting mechanism, 23. Hopper, 24. Guide seat, 25. Partition plate No. 1, 26. Lifting seat, 27. Tension spring, 28. Base, 29. Electric push rod No. 1, 30. Electric push rod No. 2, 31. Support seat No. 1, 32. Support seat No. 2, 33. Guide groove, 34. Smooth rod, 35. Partition plate No. 2, 36. First belt conveyor mechanism, 37. Second belt conveyor mechanism. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] like Figures 1-4 As shown, an automated production line for hot melting and appearance inspection of plastic parts includes a hot press 1, a six-axis robot 2, a vision inspection platform 3, a production line platform 4, a fixed placement point 5, and an electrical control system. The production line platform 4 includes a first belt conveyor mechanism 35 and a second belt conveyor mechanism 36. The first belt conveyor mechanism 35 conveys products to be hot-pressed to the six-axis robot 2. The six-axis robot 2 picks up the products to be hot-pressed from the first belt conveyor mechanism 35, transports them, and places them on the processing position of the hot press 1 to await hot pressing. The hot press 1 performs hot pressing on the products. After hot pressing is completed, the six-axis robot 2 picks up the hot-pressed products, transports them, and places them on the inspection position of the vision inspection platform 3 for inspection. After inspection is completed, the six-axis robot 2 picks up the inspected products, transports them, and places them on the second belt conveyor mechanism 36 or the fixed placement point 5. The electrical control system is electrically connected to and coordinates with the hot press 1, the six-axis robot 2, the vision inspection platform 3, and the production line platform 4. The electrical control system is a known prior art technology, such as a control system including an industrial computer.

[0021] In use, workers place products intermittently in front of the first belt conveyor 35 according to certain standards, waiting for the first belt conveyor 35 to transport the products back intermittently. When the transport stops, the products are moved to the gripping station of the six-axis robot 2. The six-axis robot 2 then picks up and places the products at the processing position of the hot press 1 to wait for hot pressing. After the products have been inspected by the vision inspection platform 3, qualified products are picked up by the six-axis robot 2 and placed in front of the second belt conveyor 36, while unqualified products are picked up by the six-axis robot 2 and placed at the fixed placement point 5, thus realizing hot pressing and automated appearance inspection.

[0022] The six-axis robot 2 is equipped with a camera for product recognition. The assembly line platform 4 also includes a third belt conveyor mechanism 7, a frame 8, a dual-axis servo motor 9, a first gear 10, and a second gear 11. A first belt conveyor mechanism 35 is mounted on the upper front part of the frame 8, and a second belt conveyor mechanism 36 is mounted on the upper rear part. The third belt conveyor mechanism 7 is mounted below the first belt conveyor mechanism 35 on the frame 8. The first belt conveyor mechanism 35 includes a first support roller 12, a second support roller 13, and a first conveyor belt 14. The second belt conveyor mechanism 36 includes a third support roller 15, a fourth support roller 16, and a second conveyor belt 17. The third belt conveyor mechanism 7 includes a fifth support roller 18, a sixth support roller 19, and a third conveyor belt 20. The frame 8 is rotatably connected to the first support roller 12, the second support roller 13, the third support roller 15, the fourth support roller 16, the fifth support roller 18, and the sixth support roller 19 in the left-right horizontal direction. The first support roller 12 and the second support roller 13 jointly drive the first conveyor belt 14 through friction; the third support roller 15 and the fourth support roller 16 jointly drive the second conveyor belt 17 through friction; and the fifth support roller 18 and the sixth support roller 19 jointly drive the third conveyor belt 20 through friction. The first support roller 12 and the fifth support roller 18 are each coaxially fixed with a first gear 10, and the two first gears 10 mesh with a transmission ratio of 1:1. The frame 8 is fixed with a dual-axis servo motor. Machine 9, the rotating shaft of the dual-axis servo motor 9 is coaxially fixed with the sixth support roller 19, and the rotating shaft is coaxially fixed with the second gear 11. The third support roller 15 is also coaxially fixed with the second gear 11. The two second gears 11 mesh with each other in a 1:1 ratio. There is a gap between the first conveyor belt 14 and the second conveyor belt 17 for the products to be hot-pressed to fall downwards. The third conveyor belt 20 corresponds vertically to the gap. The dual-axis servo motor 9 is electrically connected to the electrical control system.

[0023] In operation, controlling the rotation of the dual-axis servo motor 9 drives the sixth support roller 19 to rotate, which in turn drives the third conveyor belt 20 and the fifth support roller 18 to rotate. This, in turn, drives the first support roller 12 and the third support roller 15 to rotate via the first gear 10 and the second gear 11. Consequently, the first conveyor belt 14 and the second conveyor belt 17 drive the second support roller 13 and the fourth support roller 16 to rotate. That is, the first conveyor belt 14 and the second conveyor belt 17 rotate clockwise (viewed from the right), while the third conveyor belt 20 rotates counterclockwise (viewed from the right). This allows products awaiting heat pressing and those that have passed inspection to be transported backwards. Products that cannot be heat-pressed in time are transported through gaps and fall onto the third conveyor belt 20, then transported forward back to their original position. Workers can then pick them up again and place them on the first conveyor belt 14 to prepare for heat pressing by the six-axis robot 2. This mode eliminates the need for intermittent conveying by the first belt conveyor mechanism 35, allowing for continuous conveying. This not only increases conveying efficiency but also avoids inertial damage caused by frequent starts and stops, thus improving overall work efficiency.

[0024] The assembly line platform 4 also includes an electric lifting mechanism 21, a hopper 22, a guide seat 23, a first partition 24, a lifting seat 25, and a tension spring 26. An electric lifting mechanism 21 is installed at the front of the frame 8, and the hopper 22 is mounted on the electric lifting mechanism 21. The electric lifting mechanism 21 controls the up-and-down movement of the hopper 22 to correspond to the first belt conveyor mechanism 35 or the third belt conveyor mechanism 7. A guide seat 23 is fixed at the front of the frame 8, and the guide seat 23 is slidably connected to a vertical first partition 24. A horizontal lifting seat 25 is fixed at the bottom of the 24. The lifting seat 25 cannot pass through the guide seat 23, and a tension spring 26 is fixed between the rear and the frame 8. The lifting seat 25 has an upward tendency under the elastic tension of the tension spring 26. The electric lifting mechanism 21 is electrically connected to the electric control system. The bottom of the hopper 22 can touch the top of the first partition 24. When the bottom of the hopper 22 touches the top of the first partition 24, the hopper 22 can press the first partition 24 and move down together under the drive of the electric lifting mechanism 21.

[0025] Furthermore, the electric lifting mechanism 21 is automatically controlled by the electronic control system to intermittently extend and retract, allowing the hopper 22 to intermittently rise and fall. When the hopper 22 moves downward to correspond with the third belt conveyor 7, the first partition 24 will be pressed downward, allowing the products on the third belt conveyor 7 to enter the hopper 22. When the hopper 22 rises to correspond with the first belt conveyor 35, the worker can easily place the products on the first belt conveyor 35. During the rising process, under the elastic tension of the tension spring 26, the first partition 24 gradually rises, thereby intercepting the products conveyed by the third belt conveyor 7 and waiting for the hopper 22 to receive them. This avoids the trouble of workers moving products from the third belt conveyor 7 to the first belt conveyor 35, making it more convenient to use and increasing work efficiency.

[0026] The electric lifting mechanism 21 includes a base 27, a first electric push rod 28, a second electric push rod 29, a first support seat 30, a second support seat 31, and a guide groove 32. The base 27 is located at the lower front of the frame 8. Vertical first electric push rod 28 and second electric push rod 29 are fixed sequentially from front to back at the top of the base 27. The first support seat 30 is fixed to the top of the push rod of the first electric push rod 28, and the second support seat 31 is fixed to the top of the push rod of the second electric push rod 29. The second support seat 31 is hinged to the hopper 22. The second support seat 31 has a virtual... The hinge shaft is horizontally oriented left and right. The first support base 30 has corresponding horizontal guide grooves 32 on both the left and right sides. The front left and right ends of the hopper 22 are each fixed with a smooth rod 33. The two smooth rods 33 are coaxially arranged and are slidably connected to the two guide grooves 32. The first electric push rod 28 and the second electric push rod 29 are electrically connected to the electric control system. When the push rod of the first electric push rod 28 moves up and down relative to the push rod of the second electric push rod 29, the hopper 22 can swing up and down along the second support base 31 through the cooperation of the guide grooves 32 and the smooth rods 33.

[0027] Furthermore, by simultaneously controlling the synchronous extension and retraction of the first electric push rod 28 and the second electric push rod 29, the hopper 22 can move up and down without changing its posture. When the hopper 22 corresponds to the third belt conveyor mechanism 7, the first electric push rod 28 can be retracted, at which point the hopper 22 tilts forward and downward, facilitating the product to slide into the hopper 22. When the hopper 22 corresponds to the first belt conveyor mechanism 35, the first electric push rod 28 can be extended, at which point the hopper 22 tilts backward and downward, facilitating the product to slide from the hopper 22 onto the first belt conveyor mechanism 35. This tilting of the hopper 22 reduces product jamming, improves the smoothness of product movement, thereby reducing the need for human intervention and improving work efficiency.

[0028] A vertical second partition 34 is fixed inside the frame 8. The second partition 34 is located below the gap and above the rear of the third conveyor belt 20.

[0029] Furthermore, the second partition 34 intercepts the product as it falls through the gap onto the third belt conveyor 7 below, thus preventing it from falling out.

[0030] The above description represents a preferred embodiment of the present invention. For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of the present invention, based on the teachings of the present invention, still fall within the protection scope of the present invention.

Claims

1. An automated production line for hot melting and appearance inspection of plastic parts, comprising a hot press (1), a six-axis robot (2), a vision inspection platform (3), a production line platform (4), a fixed placement point (5), and an electrical control system, characterized in that: The assembly line platform (4) includes a first belt conveyor mechanism (35) and a second belt conveyor mechanism (36). The first belt conveyor mechanism (35) conveys the product to be hot-pressed to the six-axis robot (2). The six-axis robot (2) picks up the product to be hot-pressed from the first belt conveyor mechanism (35), moves it, and places it on the processing position of the hot press (1) to wait for hot pressing. The hot press (1) performs hot pressing on the product to be hot-pressed. After the hot pressing is completed, the six-axis robot (2) picks up the hot-pressed product, moves it, and places it on the detection position of the vision inspection platform (3) to wait for inspection. After the product inspection is completed, the six-axis robot (2) picks up the inspected product, moves it, and places it on the second belt conveyor mechanism (36) or a fixed placement point (5). The electrical control system is electrically connected to the hot press (1), the six-axis robot (2), the vision inspection platform (3), and the assembly line platform (4) and performs coordinated control.

2. The automated production line for hot melting and appearance inspection of plastic parts according to claim 1, characterized in that: The six-axis robot (2) is equipped with a camera for product recognition. The assembly line platform (4) also includes a third belt conveyor mechanism (7), a frame (8), a dual-axis servo motor (9), a first gear (10), and a second gear (11). The frame (8) has a first belt conveyor mechanism (35) installed at the upper front and a second belt conveyor mechanism (36) installed at the upper rear. The frame (8) has a third belt conveyor mechanism (7) installed below the first belt conveyor mechanism (35). The first belt conveyor mechanism (35) includes a first support roller. (12), No. 2 support roller (13), No. 1 conveyor belt (14), the second belt conveyor mechanism (36) includes No. 3 support roller (15), No. 4 support roller (16), No. 2 conveyor belt (17), the third belt conveyor mechanism (7) includes No. 5 support roller (18), No. 6 support roller (19), No. 3 conveyor belt (20), the frame (8) is rotatably connected to No. 1 support roller (12), No. 2 support roller (13), No. 3 support roller (15), No. 4 support roller (16), No. 5 support roller (18) and No. 6 support roller in the left and right horizontal direction. Roller (19), the first support roller (12) and the second support roller (13) jointly drive the first conveyor belt (14) through friction, the third support roller (15) and the fourth support roller (16) jointly drive the second conveyor belt (17) through friction, the fifth support roller (18) and the sixth support roller (19) jointly drive the third conveyor belt (20) through friction, the first support roller (12) and the fifth support roller (18) are respectively coaxially fixed with a first gear (10), the two first gears (10) mesh with a transmission ratio of one to one, the frame (8) is fixed A dual-axis servo motor (9) is fixed. The shaft of the dual-axis servo motor (9) is coaxially fixed with the sixth support roller (19), and the shaft is coaxially fixed with a second gear (11). The third support roller (15) is also coaxially fixed with a second gear (11). The two second gears (11) mesh with a transmission ratio of one to one. There is a gap between the first conveyor belt (14) and the second conveyor belt (17) for the product to be hot-pressed to fall downwards. The third conveyor belt (20) corresponds to the gap vertically. The dual-axis servo motor (9) is electrically connected to the electrical control system.

3. The automated production line for hot melting and appearance inspection of plastic parts according to claim 2, characterized in that: The assembly line platform (4) also includes an electric lifting mechanism (21), a hopper (22), a guide seat (23), a first partition (24), a lifting seat (25), and a tension spring (26). An electric lifting mechanism (21) is installed in front of the frame (8). The electric lifting mechanism (21) is equipped with a hopper (22). The electric lifting mechanism (21) is used to control the hopper (22) to move up and down in relation to the first belt conveyor (35) or the third belt conveyor (7). A guide seat (23) is fixed at the front of the frame (8). The guide seat (23) is slidably connected to a vertical first partition (24). A horizontal lifting seat (25) is fixed at the bottom of the first partition (24). The lifting seat (25) cannot pass through the guide seat (23), and a tension spring (26) is fixed between the rear and the frame (8). The lifting seat (25) has an upward tendency under the elastic tension of the tension spring (26). The electric lifting mechanism (21) is electrically connected to the electric control system. The bottom of the hopper (22) can touch the top of the first partition (24). When the bottom of the hopper (22) touches the top of the first partition (24), the hopper (22) can press the first partition (24) down together under the drive of the electric lifting mechanism (21).

4. The automated production line for hot melting and appearance inspection of plastic parts according to claim 3, characterized in that: The electric lifting mechanism (21) includes a base (27), a first electric push rod (28), a second electric push rod (29), a first support seat (30), a second support seat (31), and a guide groove (32). The base (27) is located at the lower front of the frame (8). The top of the base (27) is fixed with vertical first electric push rod (28) and second electric push rod (29) from front to back. The top of the push rod of the first electric push rod (28) is fixed with a first support seat (30), and the top of the push rod of the second electric push rod (29) is fixed with a second support seat (31). The second support seat (31) is hinged to the hopper (22). The virtual hinge axis of 31) is horizontal in the left and right direction. The first support base (30) is provided with corresponding and horizontal guide grooves (32) on both the left and right sides. The front left and right ends of the hopper (22) are fixed with light rods (33). The two light rods (33) are coaxially arranged and are slidably connected to the two guide grooves (32) respectively. The first electric push rod (28) and the second electric push rod (29) are electrically connected to the electric control system respectively. When the push rod of the first electric push rod (28) moves up and down relative to the push rod of the second electric push rod (29), the hopper (22) can swing up and down along the second support base (31) through the cooperation of the guide groove (32) and the light rod (33).

5. An automated production line for hot melting and appearance inspection of plastic parts according to any one of claims 2-4, characterized in that: A vertical second partition (34) is fixed inside the frame (8). The second partition (34) is located below the gap and above the rear of the third conveyor belt (20).

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