Double-station feeding and discharging table

Abstract

The utility model discloses a double-station feeding and discharging platform which comprises a main material frame, a movable feeding frame matched with the main material frame and a material disc borne on the movable feeding frame, the main material frame comprises two stations, and when the movable feeding frame is in butt joint with one station, the material disc on the movable feeding frame slides to the station. The station is provided with a bearing plane and a pneumatic positioning device located in the bearing plane, the pneumatic positioning device comprises a connecting plate located below the bearing plane, a pneumatic assembly installed below the connecting plate and a taper pin protruding upwards from the connecting plate, and the material disc is provided with a plurality of hole sites located at the bottom. When the material disc slides to the station, the pneumatic assembly drives the connecting plate to move upwards till the connecting plate is attached to the bottom face of the material disc and the taper pin is inserted into the hole site. The charging tray and the main material frame are designed in a split mode, namely the charging tray can be replaced. And meanwhile, the pneumatic positioning device achieves accurate positioning of the material disc, and the workpiece feeding efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical processing and welding, in particular to a double-station loading and unloading platform based on a robot. Background Art

[0002] In industrial production, loading and unloading workpieces requires repetitive and continuous operations, and requires consistency and precision. The production process for workpieces generally consists of continuous processing of multiple processes, which places great demands on loading and unloading operations. While pursuing high-quality and efficient production, the intensity of loading and unloading work has gradually increased. Human labor is unable to achieve high-intensity, non-stop labor, which to a certain extent reduces production efficiency. Robots can replace manual loading and unloading operations, helping to achieve production with a fixed process cycle. Automatic feeding mechanisms can realize efficient automatic loading and unloading systems. However, when robots automatically load, they often have difficulty locating the workpiece, resulting in the inability to grasp the workpiece.

[0003] Specifically, multi-layer stacking is often used for robot loading and unloading. Workpieces are stacked together, and the robot grabs the workpiece at a designated location for loading. After processing, the robot removes the workpiece and stacks it on a tray. However, this approach has the following disadvantages: 1. When small workpieces are stacked together, it is difficult for the robot to locate the workpieces; 2. After processing, the workpieces generate residual heat, which is not conducive to heat dissipation.

[0004] Therefore, it is hoped that a new double-station loading and unloading platform is proposed to overcome the above-mentioned defects. Utility Model Content

[0005] The purpose of the utility model is to provide a double-station loading and unloading platform for a robot, which can realize the precise positioning of the material tray and improve the efficiency of workpiece loading.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a double-station loading and unloading platform, including a main material rack, a mobile loading rack matched with the main material rack, and a material tray carried on the mobile loading rack, the main material rack includes two stations, and when the mobile loading rack is docked with one of the stations of the main material rack, the material tray on the mobile loading rack slides to the station. The station is provided with a bearing plane and a pneumatic positioning device located in the bearing plane, the pneumatic positioning device includes a connecting plate located below the bearing plane, a pneumatic component installed below the connecting plate, and a cone pin protruding upward from the connecting plate, the material tray is provided with several holes located at the bottom; when the material tray slides to the station, the pneumatic component drives the connecting plate to move upward until the connecting plate is attached to the bottom surface of the material tray and the cone pin is inserted into the hole.

[0007] In a preferred embodiment, the work station is provided with two rows of balls located on both sides of the connecting plate in the horizontal direction, and the load-bearing plane is formed on the top surfaces of the two rows of balls; the movable loading rack is provided with two rows of balls arranged in the longitudinal direction and a support plane formed on the top surfaces of the two rows of balls, and the load-bearing plane is flush with the support plane in the height direction.

[0008] In a preferred embodiment, the work station is provided with two side baffles located on the lateral sides of the two rows of balls and a front baffle located at the longitudinal front end of the two rows of balls. When the material tray is located on the work station, the side baffles and the front baffle are against the four sides of the material tray.

[0009] In a preferred embodiment, the movable loading rack is provided with stop portions located on both lateral sides and longitudinal rear sides of the two rows of balls. When the material tray is carried on the movable loading rack, the stop portions abut against three side surfaces of the material tray.

[0010] In a preferred embodiment, the movable loading rack is provided with a movable latch located at the longitudinal front side of the two rows of balls, and the movable latch protrudes upward to restrict the material tray on the supporting plane of the movable loading rack.

[0011] In a preferred embodiment, the movable loading rack moves between the two workstations, and when the movable loading rack is docked at any one of the workstations, the movable latch descends to facilitate the sliding of the material tray between the movable loading rack and the corresponding workstation.

[0012] In a preferred embodiment, the main material rack includes a secondary positioning platform located between the two workstations, the material tray is used to carry the workpiece, and the secondary positioning platform performs secondary positioning on the workpiece.

[0013] In a preferred embodiment, the main material rack further includes a laser detector located between the two workstations, wherein the laser detector is disposed adjacent to the secondary positioning platform and is used to identify the model of the workpiece.

[0014] In a preferred embodiment, the material tray includes a lower material tray and an upper material tray fixed above the lower material tray, and the hole is provided at the bottom of the lower material tray.

[0015] In a preferred embodiment, the upper material tray is provided with a plurality of holes for placing the workpieces, and the center distance between two adjacent holes is 70 mm.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the workstation is provided with a load-bearing plane and a pneumatic positioning device located within the load-bearing plane, the pneumatic positioning device includes a connecting plate located below the load-bearing plane, a pneumatic assembly installed below the connecting plate, and a tapered pin protruding upward from the connecting plate, and the material tray is provided with several holes located at the bottom. When the material tray slides onto the workstation, the pneumatic assembly drives the connecting plate to move upward until the connecting plate fits against the bottom surface of the material tray and the tapered pin is inserted into the hole. The material tray and the main material rack adopt a split design, that is, the material tray is replaceable; for mixed-line production, it can customize material trays of different workpiece models and place them on two workstations, realizing flexible production. At the same time, the pneumatic positioning device realizes the precise positioning of the material tray, and the robot can accurately grab the workpiece in the material tray according to the pneumatic positioning device, thereby improving the efficiency of workpiece loading. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional schematic diagram of a double-station loading and unloading platform in a preferred embodiment of the present utility model.

[0018] Figure 2 yes Figure 1 The three-dimensional schematic diagram of the main material rack in the double-station loading and unloading platform is shown.

[0019] Figure 3 yes Figure 1 The three-dimensional schematic diagram of the mobile loading rack in the double-station loading and unloading platform is shown.

[0020] Figure 4 yes Figure 1 The three-dimensional schematic diagram of the material tray in the double-station loading and unloading table is shown. DETAILED DESCRIPTION

[0021] See also Figures 1 to 4 As shown, a preferred embodiment of the present invention discloses a dual-station loading and unloading platform 100 for automatically loading multiple workpieces 60. The dual-station loading and unloading platform 100 includes a main material rack 1, a mobile loading rack 2 matched with the main material rack 1, and a material tray 3 supported on the mobile loading rack 2, wherein the material tray 3 is used to support the above-mentioned workpieces 60.

[0022] See also Figure 2As shown, the main material rack 1 includes two stations 10 located on both sides of the horizontal direction and a secondary positioning platform 30 and a laser detector 31 located between the two stations 10. When the mobile loading rack 2 is docked with a station 10 of the main material rack 1, the material tray 3 on the mobile loading rack 2 slides onto the station 10. After that, the robot clamps the workpiece 60 on the material tray 3 to the secondary positioning platform 30. The secondary positioning platform 30 performs secondary positioning on the workpiece 60, further improving the accuracy of the robot's grasping of the workpiece 60, which can achieve a positioning accuracy of less than ±1.5mm. At the same time, the laser detector 31 is set adjacent to the secondary positioning platform 30 and can be used to identify the model of the workpiece 60.

[0023] Each workstation 10 is equipped with a horizontal support surface 11 and a pneumatic positioning device 20 positioned within the support surface 11. Furthermore, the workstation 10 is equipped with two rows of balls 12 positioned on either side of the pneumatic positioning device 20, two side baffles 13 positioned on either side of the two rows of balls 12, and a front baffle 14 positioned at the longitudinal front ends of the two rows of balls 12. The two rows of balls 12 are positioned to facilitate the sliding of the material tray 3, and the support surface 11 is formed on the top surface of the two rows of balls 12. Furthermore, when the material tray 3 is positioned on the workstation 10, the side baffles 13 and front baffle 14 abut against the four sides of the material tray 3 to provide guidance and protection.

[0024] The pneumatic positioning device 20 includes a connecting plate 21 located below the load-bearing plane 11, a pneumatic assembly (not shown) mounted below the connecting plate 21, and a tapered pin 22 protruding upward from the connecting plate 21. When the tray 3 slides onto the workstation 10, the pneumatic assembly drives the connecting plate 21 upward until the connecting plate 21 is in contact with the bottom surface of the tray 3 and the tapered pin 22 is inserted into the hole 511 of the tray 3, thereby achieving precise positioning of the tray 3. In this embodiment, a large-diameter tapered pin 22 is used to position the tray 3, ensuring high positioning accuracy of the tray 3 and facilitating accurate positioning during robot grasping.

[0025] See also Figure 3 As shown, the movable loading rack 2 is provided with two rows of balls 41 arranged in a longitudinal direction, stoppers 42 located on both lateral sides and longitudinal rear sides of the two rows of balls 41, movable latches 43 located on the longitudinal front sides of the two rows of balls 41, and four wheels 44 mounted on the bottom. The wheels facilitate the movement of the movable loading rack 2 to transport the material tray 3. The two rows of balls 41 facilitate the sliding of the material tray 3 and form a support plane 40 on the top surface. The bearing plane 11 is flush with the support plane 40 in the height direction, that is, the material tray 3 can slide between the two, making movement effortless and convenient.

[0026] When the tray 3 is supported on the mobile loading rack 2, the stopper 42 abuts against three sides of the tray 3. The mobile loading rack 2 moves between two workstations 10. During the transportation of the tray 3, the movable latch 43 protrudes upward to restrain the tray 3 on the support surface 40 of the mobile loading rack 2, thereby preventing the tray 3 from sliding off the mobile loading rack 2 during transportation. Furthermore, when the mobile loading rack 2 docks with any workstation 10, the movable latch 43 descends to remove the position restriction on the tray 3, facilitating the tray 3's sliding between the mobile loading rack 2 and the corresponding workstation 10.

[0027] See also Figure 4 As shown, the material tray 3 includes a lower material tray 51 and an upper material tray 52 fixed above the lower material tray 51. The lower material tray 51 and the upper material tray 52 are fixed together by screws. The lower material tray 51 has several holes 511 at the bottom. In other words, the lower material tray 51 uses a porous plate as the bottom, which not only assists in positioning the taper pin 22 but also helps dissipate heat from the workpiece 60. The upper material tray 52 has several slots 521 for placing the workpiece 60. The center distance between two adjacent slots 52 is 70 mm, mainly used to fix the position of the workpiece 60.

[0028] In this embodiment, each tray 3 can hold approximately 70 parts, meaning it features a large capacity. Furthermore, the tray 3 utilizes a high-rigidity, multi-layered perforated plate design, facilitating heat dissipation from the workpiece 60 and preventing deformation caused by heat conduction. Furthermore, the upper tray 52 can be customized with apertures 521 of varying sizes to accommodate different workpieces. This allows for mixed-line production, allowing for the placement of two different workpiece sizes on a single tray 3, thus facilitating flexible production.

[0029] In the present invention, the workstation 10 is equipped with a support surface 11 and a pneumatic positioning device 20 located within the support surface 11. The pneumatic positioning device 20 comprises a connecting plate 21 located below the support surface 11, a pneumatic assembly mounted below the connecting plate 21, and a tapered pin 22 protruding upward from the connecting plate 21. The tray 3 is provided with several holes 511 at its bottom. When the tray 3 slides onto the workstation 10, the pneumatic assembly drives the connecting plate 21 upward until it rests against the bottom of the tray 3 and the tapered pin 22 is inserted into the holes 511. The tray 3 and the main material rack 1 are designed to be separate, making the tray 3 interchangeable. This allows for customized trays 3 with different workpiece sizes to be placed on two workstations 10 for mixed-line production, achieving flexible production. Furthermore, the pneumatic positioning device 20 precisely positions the tray 3, allowing the robot to accurately grasp the workpiece 60 in the tray 3 based on the pneumatic positioning device 20, improving the efficiency of workpiece 60 loading.

[0030] In summary, the above are merely preferred embodiments of the present invention and should not be used to limit the scope of the present invention. That is, any simple equivalent changes and modifications made according to the claims and description of the present invention should still fall within the scope of the present invention patent.

Claims

1. A dual-station loading and unloading platform, comprising a main material rack, a mobile loading rack matched with the main material rack, and a material tray carried on the mobile loading rack, wherein the main material rack comprises two stations, and when the mobile loading rack docks with one of the stations of the main material rack, the material tray on the mobile loading rack slides onto the station; characterized in that: The work station is provided with a load-bearing plane and a pneumatic positioning device located within the load-bearing plane, the pneumatic positioning device includes a connecting plate located below the load-bearing plane, a pneumatic component installed below the connecting plate, and a conical pin protruding upward from the connecting plate, and the material tray is provided with several hole positions at the bottom; when the material tray slides onto the work station, the pneumatic component drives the connecting plate to move upward until the connecting plate is attached to the bottom surface of the material tray and the conical pin is inserted into the hole position.

2. The double-station loading and unloading platform according to claim 1, characterized in that: The work station is provided with two rows of balls located on both sides of the connecting plate in the horizontal direction, and the load-bearing plane is formed on the top surface of the two rows of balls; the movable loading rack is provided with two rows of balls arranged in the longitudinal direction and a support plane formed on the top surface of the two rows of balls, and the load-bearing plane is flush with the support plane in the height direction.

3. The double-station loading and unloading platform according to claim 2, characterized in that: The work station is provided with two side baffles located on the lateral sides of the two rows of balls and a front baffle located at the longitudinal front ends of the two rows of balls. When the material tray is located on the work station, the side baffles and the front baffle are against the four sides of the material tray.

4. The double-station loading and unloading platform according to claim 2, characterized in that: The movable loading rack is provided with stop parts located on both sides of the horizontal direction and the rear side of the longitudinal direction of the two rows of balls. When the material tray is carried on the movable loading rack, the stop parts abut against the three side surfaces of the material tray.

5. The double-station loading and unloading platform according to claim 4, characterized in that: The movable loading rack is provided with a movable pin located on the longitudinal front side of the two rows of balls, and the movable pin protrudes upward to limit the material tray on the supporting plane of the movable loading rack.

6. The double-station loading and unloading platform according to claim 5, characterized in that: The movable loading rack moves between the two workstations, and when the movable loading rack is docked at any one of the workstations, the movable latch descends to facilitate the sliding of the material tray between the movable loading rack and the corresponding workstation.

7. The double-station loading and unloading platform according to claim 1, characterized in that: The main material rack includes a secondary positioning platform located between the two workstations. The material tray is used to carry the workpiece, and the secondary positioning platform performs secondary positioning on the workpiece.

8. The double-station loading and unloading platform according to claim 7, characterized in that: The main material rack further includes a laser detector located between the two workstations. The laser detector is disposed adjacent to the secondary positioning platform and is used to identify the model of the workpiece.

9. The double-station loading and unloading platform according to claim 7, characterized in that: The material tray includes a lower material tray and an upper material tray fixed above the lower material tray, and the hole is set at the bottom of the lower material tray.

10. The double-station loading and unloading platform according to claim 9, characterized in that: The upper material tray is provided with a plurality of holes for placing the workpieces, and the center distance between two adjacent holes is 70 mm.

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