A non-powered unloading device

Abstract

The present invention discloses a non-powered unloading device, comprising: a frame with a storage platform provided on the upper part and an unloading platform provided on the lower part; a rotating wheel rotatably arranged on the frame; a flexible strip wound around the rotating wheel, one end of which is connected to a counterweight block, and the other end of which is connected to a lifting frame; a loading assembly rotatably arranged on the lifting frame; the weight of the counterweight block is greater than the sum of the weights of the lifting frame and the loading assembly; a linkage mechanism capable of driving the loading assembly to rotate relative to the lifting frame to unload the workpiece onto the unloading platform. When the workpiece needs to be transported, the workpiece is driven along the storage platform into the loading assembly, the loading assembly with the workpiece descends to one side of the unloading platform and triggers the linkage mechanism to unload the workpiece onto the unloading platform, and when the workpiece leaves the loading assembly, the counterweight block descends and the lifting frame rises to one side of the storage platform to continue to receive the workpiece; the non-powered unloading device does not require a power device, saves energy, and has high conveying efficiency, avoiding damage to the workpiece due to falling or causing safety accidents.

Description

Technical Field

[0001] The present invention relates to the technical field of transportation equipment, and in particular to a non-powered unloading device. Background Art

[0002] In some production and processing processes, it is often necessary to unload rollable workpieces (such as bars or spheres) from high places to lower locations. Manual unloading is labor-intensive and time-consuming, and can easily damage the workpiece surface or cause safety accidents. If equipment such as cranes are used for transportation, the workpieces need to be grasped and released one by one, and the frequent lifting and lowering operations lead to low transportation efficiency and high energy consumption. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the prior art. To this end, the present invention provides a labor-saving and high-efficiency unpowered material unloading device.

[0004] According to an embodiment of the present invention, a non-powered unloading device includes: a frame, an upper portion of the frame is provided with a storage platform, and a lower portion of the frame is provided with an unloading platform; a rotating wheel, rotatably arranged on the frame; a flexible strip, wound around the rotating wheel, one end of the flexible strip is connected to a counterweight block, and the other end of the flexible strip is connected to a lifting frame; a loading assembly is rotatably arranged on the lifting frame; the weight of the counterweight block is greater than the sum of the weights of the lifting frame and the loading assembly; a linkage mechanism is provided between the loading assembly and the frame, and can drive the loading assembly to rotate relative to the lifting frame to unload the workpiece onto the unloading platform.

[0005] The unpowered blanking device according to the embodiment of the present invention has at least the following beneficial effects:

[0006] When the workpiece on the storage platform needs to be transported to the unloading platform, the workpiece is driven along the storage platform into the loading assembly. The sum of the weight of the workpiece, the loading assembly and the lifting frame is greater than the counterweight block. The end of the flexible strip connected to the lifting frame descends to one side of the unloading platform, and the end of the flexible strip connected to the counterweight block rises. The loading assembly triggers the linkage mechanism to unload the workpiece onto the unloading platform. After the workpiece leaves the loading assembly, the end of the flexible strip connected to the counterweight block descends, and the end of the flexible strip connected to the lifting frame rises to one side of the storage platform to continue to receive the workpiece. The above unpowered unloading device has a simple and ingenious structure, does not require a power device, saves energy, and has high conveying efficiency, avoiding damage to the workpiece due to falling or causing safety accidents.

[0007] In some embodiments of the present invention, the linkage mechanism includes a first rotating arm, and the first rotating arm and the carrier assembly are rotatably arranged on the lifting frame through a rotating shaft. The carrier assembly has a first angular position for carrying the workpiece and a second angular position for releasing the workpiece relative to the lifting frame. The frame is provided with a first contact portion and a second contact portion that can abut against the first rotating arm. The first rotating arm abuts against the first contact portion to make the carrier assembly in the first angular position, and the first rotating arm abuts against the second contact portion to make the carrier assembly in the second angular position.

[0008] In some embodiments of the present invention, the first contact portion is a guide bar extending in the up-down direction, the second contact portion is a guide platform located below the guide bar and extending in the horizontal direction, and the first rotating arm is rotatably provided with a first roller capable of sliding along the side wall of the guide bar or the guide platform at one end away from the rotating shaft, and the first roller moves along the side wall of the guide bar to the guide platform to switch the loading assembly from the first angular position to the second angular position.

[0009] In some embodiments of the present invention, the material carrying assembly includes a claw fixed to the rotating shaft to rotate relative to the lifting frame, one end of the claw is provided with a material stop portion, the lifting frame is provided with a limiting portion opposite to the material stop portion, and a receiving groove for accommodating the workpiece is defined between the material stop portion and the limiting portion, and the first rotating arm can drive the rotating shaft to rotate so that the material stop portion is close to or away from the limiting portion.

[0010] In some embodiments of the present invention, the rotating shaft is provided with a plurality of the claws and a plurality of material receiving plates corresponding to the claws at intervals along its length direction, each of the material receiving plates is provided with a limiting portion, and the other end of the claw is provided with a unloading inclined portion, and the claw can be rotated until the unloading inclined portion extends above the material receiving plate and the blocking portion is accommodated below the material receiving plate.

[0011] In some embodiments of the present invention, the lifting frame and the counterweight block both include a rectangular plate body, and the frame is provided with a movable groove for the lifting and moving of the rectangular plate body in the up and down directions, and the opposite side walls of the movable groove are provided with guide grooves that slide with the two ends of the rectangular plate body, the rotating wheel is a sprocket, and the flexible strip is a chain engaged with the sprocket, and the frame is arranged with two sprockets and chains located at the two ends of the rectangular plate body on the upper part of the movable groove.

[0012] In some embodiments of the present invention, the frame is provided with an upper buffer mechanism and / or a lower buffer mechanism for decelerating the lifting frame.

[0013] In some embodiments of the present invention, the upper buffer mechanism and the lower buffer mechanism both include a rotating arm, a driving part and a brake part. The middle part of the rotating arm is rotatably arranged on the frame, and the driving part and the brake part are respectively arranged at both ends of the rotating arm. The lifting frame can contact the driving part to drive the rotating arm to rotate so that the brake part abuts against the lifting frame.

[0014] In some embodiments of the present invention, the upper surface of the storage platform is an inclined surface, the loading assembly is docked with the lower end of the inclined surface, and the frame is provided with a discharge mechanism that can extend above the inclined surface to block the workpiece or be accommodated below the inclined surface to release the workpiece.

[0015] In some embodiments of the present invention, the discharge mechanism includes a linear drive, a second rotating arm, a lifting swing arm and a damping buffer. The middle part of the second rotating arm and the middle part of the lifting swing arm are rotatably arranged on the frame through a pivot part. The end of the lifting swing arm extending above the inclined surface and one end of the second rotating arm are connected through the damping buffer. The main body of the linear drive is rotatably set on the frame, and the output end of the linear drive is rotatably connected to the second rotating arm.

[0016] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments with reference to the following drawings, in which:

[0018] Figure 1 This is a structural schematic diagram of an embodiment of the unpowered unloading device of the present invention, in which the loading assembly is located on one side of the storage platform;

[0019] Figure 2 for Figure 1 A schematic diagram of the partial structure of an embodiment;

[0020] Figure 3 for Figure 1 A schematic structural diagram of the embodiment in which the loading assembly is located on one side of the unloading platform;

[0021] Figure 4 for Figure 3 Schematic diagram of the layout structure of the embodiment.

[0022] Reference numerals:

[0023] Frame 100; storage platform 110; unloading platform 120; guide chute 130;

[0024] Rotating wheel 200;

[0025] Flexible strip 300;

[0026] Counterweight 400;

[0027] Lifting frame 500; receiving plate 510; limiting portion 511; first guide slope 520; braking surface 530; second guide slope 540;

[0028] Material loading assembly 600; claw 610; material blocking portion 620; unloading inclined portion 630;

[0029] Linkage mechanism 700; first rotating arm 710; first contact portion 720; second contact portion 730; first roller 711;

[0030] Upper buffer mechanism 810; rotating arm 811; driving unit 812; brake unit 813; tension spring 814; lower buffer mechanism 820;

[0031] Discharging mechanism 900; linear drive 910; second rotating arm 920; lifting swing arm 930; damping buffer 940. DETAILED DESCRIPTION

[0032] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0033] In the description of the present invention, it should be understood that descriptions involving orientations, such as the orientations or positional relationships indicated by terms such as "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside", are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 a limitation on the present invention.

[0034] In the description of the present invention, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. The use of "first" and "second" in the description is solely for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0035] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0036] See also Figures 1 to 4 A non-powered unloading device of the present invention includes: a frame 100, a storage platform 110 is provided on the upper part of the frame 100, and an unloading platform 120 is provided on the lower part of the frame 100; a rotating wheel 200, rotatably arranged on the frame 100; a flexible strip 300, wound around the rotating wheel 200, one end of the flexible strip 300 is connected to a counterweight block 400, and the other end of the flexible strip 300 is connected to a lifting frame 500; a loading assembly 600, rotatably arranged on the lifting frame 500; the weight of the counterweight block 400 is greater than the sum of the weights of the lifting frame 500 and the loading assembly 600; a linkage mechanism 700, provided between the loading assembly 600 and the frame 100, capable of driving the loading assembly 600 to rotate relative to the lifting frame 500 to unload the workpiece onto the unloading platform 120.

[0037] It should be noted that the weight of the counterweight 400 is greater than the sum of the weights of the lifting frame 500 and the loading assembly 600, but the weight of the counterweight 400 is less than the sum of the weights of the lifting frame 500, the loading assembly 600 and the workpiece transported in a single time. Therefore, when the loading assembly 600 is unloaded, the end of the flexible strip 300 connected to the counterweight 400 is located at the lower part of the frame 100, and the lifting frame 500 and the loading assembly 600 are located at the upper part of the frame 100. When the workpiece is moved along the storage platform 110, the workpiece is moved to the upper part of the frame 100. When the workpiece enters the loading assembly 600, the workpiece, the lifting frame 500, and the loading assembly 600 form a whole that drags the flexible belt downward, and the flexible belt pulls the counterweight 400 upward. When the loading assembly 600 moves downward to one side of the unloading platform 120, the loading assembly 600 triggers the linkage mechanism 700, which drives the loading assembly 600 to rotate relative to the lifting frame 500, thereby releasing the workpiece on the loading assembly 600 toward the unloading platform 120. After the workpiece leaves the loading assembly 600, because the weight of the counterweight 400 is greater than the combined weight of the lifting frame 500 and the loading assembly 600, the counterweight 400 drags the flexible belt downward, and the lifting frame 500 and the loading assembly 600 return to the side of the storage platform 110 for the next workpiece transportation. The above unpowered unloading device has a simple and ingenious structure, does not require a power device, saves energy, and has high conveying efficiency, preventing the workpiece from falling and damaging the workpiece or causing safety accidents.

[0038] It should be noted that the workpiece transported in a single time can be one or more. As long as the weight of the workpiece transported in a single time, the lifting frame 500 and the loading assembly 600 is greater than the weight of the counterweight block 400, the workpiece can be transported from the storage platform 110 to the unloading platform 120 by gravity.

[0039] In this embodiment, the counterweight 400 comprises a rectangular plate and a weight block removably mounted thereon via a bolt assembly. Depending on the weight of the workpiece being transported, the number of weight blocks can be increased or decreased, or their specifications can be modified to accommodate workpieces of varying weights. It is understood that the weight of the counterweight 400 should be only slightly less than the combined weight of the workpiece, the lift 500, and the carrier assembly 600 for a single transport, to minimize impact on the workpiece as it reaches its lowest point.

[0040] See also Figure 1 and Figure 2 In some embodiments of the present invention, when the workpiece being conveyed is a rollable part, such as a rod, in order to automatically convey the rod to the carrier assembly 600, the upper surface of the storage platform 110 is an inclined surface, and the carrier assembly 600 docks with the lower end of the inclined surface. The frame 100 is provided with a discharge mechanism 900 that can extend above the inclined surface to block the workpiece or be accommodated below the inclined surface to release the workpiece.

[0041] When the unloading mechanism 900 is received below the inclined surface, the workpiece blocked by the unloading mechanism 900 can roll toward the carrier assembly 600. The unloading mechanism 900 then quickly extends above the inclined surface again to block another workpiece behind it, thereby achieving the effect of rolling and conveying the workpieces one by one. Of course, in other embodiments, the upper surface of the storage platform 110 is a horizontal surface, and the workpieces can also be conveyed one by one to the carrier assembly 600 by a pushing mechanism or manual pushing.

[0042] See also Figure 2 In some embodiments of the present invention, the discharge mechanism 900 includes a linear drive 910, a second rotating arm 920, a lifting swing arm 930 and a damping buffer 940. The middle part of the second rotating arm 920 and the middle part of the lifting swing arm 930 are rotatably arranged on the frame 100 through a pivot portion. The end of the lifting swing arm 930 extending above the inclined surface is connected to one end of the second rotating arm 920 through a damping buffer 940. The main body of the linear drive 910 is rotatably arranged on the frame 100, and the output end of the linear drive 910 is rotatably connected to the second rotating arm 920.

[0043] The linear actuator 910 is a pneumatic cylinder or electric push rod, and the main body of the damping buffer 940 is rotatably mounted on the second rotating arm 920. The extended end of the damping buffer 940 is rotatably mounted on the lifting swing arm 930. It is understood that when the output end of the linear actuator 910 extends, the second rotating arm 920 rotates, and the damping buffer 940 drives one end of the lifting swing arm 930 to extend upward above the inclined surface, thereby preventing the workpiece from moving along the inclined surface toward the carrier assembly 600. After releasing one workpiece, the remaining workpieces have kinetic energy to collide with the lifting swing arm 930, which can easily damage the surface of the workpiece. The discharge mechanism 900 with the above structure can solve this problem. When the remaining workpieces move toward the lifting swing arm 930, the lifting swing arm 930 swings slightly downward relative to the second rotating arm 920. At this time, the protruding end of the damping buffer 940 is forced to retract. At this time, the end of the lifting swing arm 930 is still above the storage platform 110. When the workpiece located behind the lifting swing arm 930 loses kinetic energy, the damping buffer 940 drives the lifting swing arm 930 to reset.

[0044] See also Figure 1 and Figure 3 In some embodiments of the present invention, the linkage mechanism 700 includes a first rotating arm 710, and the first rotating arm 710 and the loading assembly 600 are rotatably arranged on the lifting frame 500 through the rotating shaft 640. The loading assembly 600 has a first angular position for carrying the workpiece and a second angular position for releasing the workpiece relative to the lifting frame 500. The frame 100 is provided with a first contact portion 720 and a second contact portion 730 that can abut against the first rotating arm 710. The first rotating arm 710 abuts against the first contact portion 720 to make the loading assembly 600 in the first angular position, and the first rotating arm 710 abuts against the second contact portion 730 to make the loading assembly 600 in the second angular position.

[0045] It is understood that while the carrier assembly 600 receives the workpiece and moves downward along the frame 100, the first pivot arm 710 maintains contact with the first contact portion 720, and the carrier assembly 600 is in the first angular position, thereby smoothly receiving and transporting the workpiece. When the first pivot arm 710 leaves the first contact portion 720, it abuts the second contact portion 730, and the carrier assembly 600 rotates relative to the lifting frame 500 to the second angular position, thereby releasing the workpiece onto the unloading platform 120.

[0046] See also Figure 1 and Figure 3In some embodiments of the present invention, the first contact portion 720 is a guide bar extending in the up-down direction, the second contact portion 730 is a guide platform located below the guide bar and extending in the horizontal direction, and the first rotating arm 710 is rotatably provided with an end away from the rotating shaft 640 and is provided with a first roller 711 that can slide along the side wall of the guide bar or the guide platform. The first roller 711 moves along the side wall of the guide bar to the guide platform to switch the loading assembly 600 from the first angular position to the second angular position.

[0047] It should be noted that when the workpiece enters the loading assembly 600, the workpiece can act on the loading assembly 600 to make the first roller 711 on the first rotating arm 710 abut against the side wall of the guide bar. The weight of the loading assembly 600 carrying the workpiece and the lifting frame 500 is greater than the weight of the counterweight block 400, and the lifting frame 500 moves downward in the vertical direction. During this process, the first roller 711 slides or rolls along the side wall of the guide bar, and the loading assembly 600 remains in the first angular position. After the first roller 711 leaves the lower end of the guide bar, the workpiece acts on the loading assembly 600 to rotate the first rotating arm 710, and then the first roller 711 abuts against the guide platform, and the loading assembly 600 rotates to the second angular position relative to the lifting frame 500, thereby releasing the workpiece on the unloading platform 120.

[0048] After the workpiece leaves the carrier assembly 600, the combined weight of the unloaded carrier assembly 600 and the lift 500 is less than the weight of the counterweight 400. As the lift 500 and carrier assembly 600 move upward together, the first rotating arm 710 contacts the lower end of the guide bar and swings, causing the first roller 711 to rest against the side wall of the guide bar and move upward, returning the carrier assembly 600 to its first angular position to transport the next workpiece. The above linkage mechanism 700 relies entirely on gravity and the inertia of the object's movement to transport the workpiece, without the need for a power unit or elastic energy storage device. Its structure is extremely simple and ingenious, saving energy and achieving high conveying efficiency.

[0049] See also Figure 1 and Figure 4 In some embodiments of the present invention, the material carrying assembly 600 includes a claw 610 fixed to a rotating shaft 640 for rotating relative to the lifting frame 500, a material stop portion 620 is provided at one end of the claw 610, and the lifting frame 500 is provided with a limiting portion 511 opposite to the material stop portion 620, and a receiving groove for accommodating the workpiece is defined between the material stop portion 620 and the limiting portion 511, and the first rotating arm 710 can drive the rotating shaft 640 to rotate so that the material stop portion 620 is close to or away from the limiting portion 511.

[0050] It can be understood that when the workpiece is a rod, the rod rolls from the storage platform 110 into the receiving groove, and the material blocking portion 620 and the limiting portion 511 prevent the rod from leaving the receiving groove. The rod acts on the material blocking portion 620 to make the first rotating arm 710 abut against the first contact portion 720. At this time, the material blocking portion 620 is close to the limiting portion 511 to make the loading assembly 600 in a first angle position. When the first rotating arm 710 leaves the first contact portion 720 and abuts against the second contact portion 730, the claw 610 rotates to make the material blocking portion 620 away from the limiting portion 511. At this time, the material blocking portion 620 no longer blocks the rod, and the rod can roll onto the unloading platform 120.

[0051] See also Figure 4 In some embodiments of the present invention, a plurality of claws 610 and a plurality of material receiving plates 510 corresponding to the claws 610 are arranged at intervals along the length of the rotating shaft 640. Each material receiving plate 510 is provided with a limiting portion 511. The other end of the claw 610 is provided with a discharge inclined portion 630. In this embodiment, the claw 610 has a V-shaped groove, and the two side surfaces of the V-shaped groove constitute the above-mentioned stop portion 620 and the discharge inclined portion 630. When the first rotating arm 710 drives the rotating shaft 640 to rotate, the claw 610 can rotate until the discharge inclined portion 630 extends above the material receiving plate 510 and the stop portion 620 is accommodated below the material receiving plate 510. At this time, the discharge inclined portion 630 can drive the rod body to leave the loading assembly 600 and enter the discharge platform 120. The multiple rods are rolled in sequence and arranged on the discharge platform 120. When the first rotating arm 710 drives the rotating shaft 640 to rotate, the claw 610 can also rotate to a state where the material blocking portion 620 extends above the material receiving plate 510 and the unloading inclined portion 630 is accommodated below the material receiving plate 510. At this time, a receiving groove for accommodating the rod body is formed between the material blocking portion 620 and the limiting portion 511, and the rod body can be stably placed on the loading assembly 600.

[0052] In order to simplify the manufacturing process, multiple receiving plates 510 and the lifting frame 500 are an integrated structure. Each receiving plate 510 is provided with a through hole for the rotating shaft 640 to pass through. The center of each through hole is located on the central axis of the rotating shaft 640. The claw 610 is passed through the rotating shaft 640 and fixed by welding or fastening the assembly. Of course, in some embodiments, the claw 610 and the rotating shaft 640 can also be an integrated structure.

[0053] See also Figure 2 and Figure 3In some embodiments of the present invention, the lifting frame 500 and the counterweight 400 both comprise rectangular plates. The frame 100 is provided with a movable slot along the vertical direction for the rectangular plates to be raised and lowered. Opposite walls of the movable slot are provided with guide slots 130 that slidably engage with the ends of the rectangular plates. The rotating wheel 200 is a sprocket, and the flexible strip 300 is a chain that meshes with the sprockets. The frame 100 is provided with two sprockets and chains located at the ends of the rectangular plates above the movable slot. It is understood that the sliding of the ends of the rectangular plates within the guide slots 130 facilitates the stable lifting and lowering of the lifting frame 500 and the counterweight 400, preventing jamming that could cause the workpiece to fall out of the receiving slot, and also helps extend the service life of the unpowered unloading device. The use of sprockets for the rotating wheel 200 and chains for the flexible strip 300 improves the load capacity of the unpowered unloading device and enhances the reliability of workpiece transport. It can be understood that one end of the flexible strip 300 is connected to the counterweight block 400, and the other end of the flexible strip 300 is connected to the lifting frame 500 and the loading assembly 600. The two ends of the flexible strip 300 are respectively located on both sides of the rotating wheel 200 to form a fixed pulley mechanism. Therefore, in other embodiments, the flexible strip 300 can also replace the wire rope, and the rotating wheel 200 is a roller.

[0054] See also Figure 1 、 Figure 2 and Figure 3 In some embodiments of the present invention, the frame 100 is provided with an upper buffer mechanism 810 for decelerating the lifting frame 500, or the frame 100 is provided with a lower buffer mechanism 820 for decelerating the lifting frame 500, or the frame 100 is provided with both an upper buffer mechanism 810 and a lower buffer mechanism 820 for decelerating the lifting frame 500. Because the weight of the counterweight 400 is less than the combined weight of the lifting frame 500, the carrier assembly 600, and the workpieces transported in a single transport, when the lifting frame 500 carrying the workpiece moves downward to the lowest point of its travel, the lower buffer mechanism 820 acts on the lifting frame 500 to quickly stop the lifting frame 500, thereby preventing the workpieces and the carrier assembly 600 from being subjected to significant impact and protecting the workpieces from damage. Since the weight of the counterweight 400 is greater than the sum of the weights of the lifting frame 500 and the loading assembly 600, when the unloaded lifting frame 500 moves upward to the highest point of its travel, the upper buffer mechanism 810 acts on the lifting frame 500 to quickly stop the lifting frame 500, thereby preventing the loading assembly 600 and the lifting frame 500 from being subjected to a large impact and extending the service life of the unpowered unloading device.

[0055] See also Figure 2In some embodiments of the present invention, the structures of the upper buffer mechanism 810 and the lower buffer mechanism 820 are consistent. The upper buffer mechanism 810 and the lower buffer mechanism 820 both include a rotating arm 811, a driving unit 812 and a brake unit 813. The middle part of the rotating arm 811 is rotatably arranged on the frame 100, and the driving unit 812 and the brake unit 813 are respectively arranged at both ends of the rotating arm 811. A tension spring 814 connected to the rotating arm 811 is provided on the frame 100. Under the action of the tension spring 814, the brake unit 813 moves away from the lifting frame 500. The driving unit 812 is located on the trajectory of the up and down movement of the lifting frame 500. When the lifting frame 500 moves to the side of the storage platform 110 or the side of the unloading platform 120, the lifting frame 500 can contact the driving unit 812 to drive the rotating arm 811 to rotate, so that the brake unit 813 abuts against the lifting frame 500, thereby achieving a friction deceleration effect on the lifting frame 500. In this embodiment, the driving portion 812 is a second roller, and the braking portion 813 is a rubber wheel. The rectangular plate of the lifting frame 500 has a first guide slope 520, a braking surface 530, and a second guide slope 540 connected in sequence. When the lifting frame 500 touches the second roller, the second roller moves along the first guide slope 520 through the braking surface 530 to the second guide slope 540. During this process, the rubber wheel generates sliding friction on the braking surface 530.

[0056] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0057] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to the embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the claims and their equivalents.

Claims

1. A non-powered blanking device, characterized in that: include: A frame (100), wherein an upper portion of the frame (100) is provided with a storage platform (110), and a lower portion of the frame (100) is provided with a discharge platform (120); A rotating wheel (200) rotatably mounted on the frame (100); A flexible strip (300) is wound around the rotating wheel (200), one end of the flexible strip (300) is connected to a counterweight (400), and the other end of the flexible strip (300) is connected to a lifting frame (500); A material loading assembly (600) rotatably mounted on the lifting frame (500); The weight of the counterweight (400) is greater than the sum of the weights of the lifting frame (500) and the material loading assembly (600); a linkage mechanism (700) disposed between the material carrier assembly (600) and the frame (100), capable of driving the material carrier assembly (600) to rotate relative to the lifting frame (500) to unload the workpiece onto the unloading platform (120); The linkage mechanism (700) includes a first rotating arm (710), the first rotating arm (710) and the carrier assembly (600) are rotatably arranged on the lifting frame (500) through a rotating shaft (640), the carrier assembly (600) has a first angular position for carrying a workpiece and a second angular position for releasing the workpiece relative to the lifting frame (500), and the frame (100) is provided with a first contact portion (720) and a second contact portion (730) capable of abutting against the first rotating arm (710), the first rotating arm (710) abuts against the first contact portion (720) so that the carrier assembly (600) is in the first angular position, and the first rotating arm (710) abuts against the second contact portion (730) so that the carrier assembly (600) is in the second angular position.

2. The unpowered blanking device according to claim 1, characterized in that: The first contact portion (720) is a guide bar extending in the up-down direction, the second contact portion (730) is a guide platform located below the guide bar and extending in the horizontal direction, and the first rotating arm (710) is rotatably provided with a first roller (711) capable of sliding along the side wall of the guide bar or the guide platform at one end away from the rotating shaft (640), and the first roller (711) moves along the side wall of the guide bar to the guide platform to switch the loading assembly (600) from the first angular position to the second angular position.

3. The unpowered blanking device according to claim 1, characterized in that: The material carrying assembly (600) includes a claw (610) fixed to the rotating shaft (640) to rotate relative to the lifting frame (500), one end of the claw (610) is provided with a material stopper (620), the lifting frame (500) is provided with a limiting portion (511) opposite to the material stopper (620), and a receiving groove for accommodating a workpiece is defined between the material stopper (620) and the limiting portion (511), and the first rotating arm (710) can drive the rotating shaft (640) to rotate so that the material stopper (620) approaches or moves away from the limiting portion (511).

4. The unpowered blanking device according to claim 3, characterized in that: The rotating shaft (640) is provided with a plurality of the clamping claws (610) and a plurality of material receiving plates (510) corresponding to the clamping claws (610) at intervals along its length direction. Each material receiving plate (510) is provided with a limiting portion (511). The other end of the clamping claw (610) is provided with a discharge inclined portion (630). The clamping claw (610) can be rotated until the discharge inclined portion (630) extends above the material receiving plate (510) and the blocking portion (620) is accommodated below the material receiving plate (510).

5. The unpowered blanking device according to claim 1, characterized in that: The lifting frame (500) and the counterweight (400) both include rectangular plates. The frame (100) is provided with a movable groove for the rectangular plate to be lifted and moved in the up-down direction. The two opposite side walls of the movable groove are provided with guide grooves (130) that are slidably engaged with the two ends of the rectangular plate. The rotating wheel (200) is a sprocket, and the flexible strip (300) is a chain engaged with the sprocket. The frame (100) is provided with two sprockets and chains located at the two ends of the rectangular plate on the upper part of the movable groove.

6. The unpowered blanking device according to claim 1, characterized in that: The frame (100) is provided with an upper buffer mechanism (810) and / or a lower buffer mechanism (820) for decelerating the lifting frame (500).

7. The unpowered blanking device according to claim 6, characterized in that: The upper buffer mechanism (810) and the lower buffer mechanism (820) both include a rotating arm (811), a driving part (812) and a brake part (813); the middle part of the rotating arm (811) is rotatably arranged on the frame (100); the driving part (812) and the brake part (813) are respectively arranged at two ends of the rotating arm (811); the lifting frame (500) can contact the driving part (812) to drive the rotating arm (811) to rotate so that the brake part (813) abuts against the lifting frame (500).

8. The unpowered blanking device according to claim 1, characterized in that: The upper surface of the storage platform (110) is an inclined surface, the loading assembly (600) is docked with the lower end of the inclined surface, and the frame (100) is provided with a discharge mechanism (900) that can extend above the inclined surface to block the workpiece or be accommodated below the inclined surface to release the workpiece.

9. The unpowered blanking device according to claim 8, characterized in that: The discharge mechanism (900) includes a linear drive (910), a second rotating arm (920), a lifting swing arm (930) and a damping buffer (940). The middle portion of the second rotating arm (920) and the middle portion of the lifting swing arm (930) are rotatably arranged on the frame (100) through a pivot portion. One end of the lifting swing arm (930) extending above the inclined surface and one end of the second rotating arm (920) are connected through the damping buffer (940). The main body of the linear drive (910) is rotatably arranged on the frame (100), and the output end of the linear drive (910) is rotatably connected to the second rotating arm (920).

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