A suction cup gripping device

Abstract

This utility model relates to a suction cup gripping device, including a bracket, a main shaft mounted on the bracket, a suction cup for adsorbing objects, a reset component for repositioning the suction cup, and a universal joint connected to the main shaft. The universal joint is located at the connection between the main shaft and the suction cup. A support plate is mounted on the main shaft. The reset component is mounted on the support plate. Several sets of reset components are arranged in a circumferential array, and the functional end of the reset component abuts against the surface of the suction cup. This invention solves the problems of traditional suction cups, such as difficulty in adapting to inclined surfaces, unstable gripping, poor adjustment, and slow repositioning.

Description

Technical Field

[0001] This utility model relates to the field of suction cup gripping, and more particularly to a suction cup gripping device. Background Technology

[0002] In existing technologies, suction cup gripping devices have become important equipment in automated operations such as logistics sorting, industrial assembly, and warehousing handling due to their ease of operation and stable gripping capabilities. They achieve rapid transfer of various regular-shaped items by generating negative pressure to adhere to the surface of objects, greatly improving operational efficiency. However, traditional suction cup gripping devices have significant limitations when dealing with non-horizontal surfaces. Most suction cup gripping devices are controlled by a vertical arm for lifting, with the suction cup surface maintaining a fixed vertical relationship with the arm, making them only suitable for items with level surfaces. When the surface of the item is tilted due to improper stacking or placement, the suction cup cannot adhere tightly to the surface, causing the negative pressure seal to fail, resulting in ineffective adhesion and ultimately, gripping failure. Taking express delivery sorting as an example, express parcels often form irregular stacks due to compression and collision during transportation, with the upper surface often being tilted or uneven. When faced with parcels on such tilted surfaces, traditional suction cup gripping devices often cannot adaptively adjust the suction cup angle, making it difficult to achieve stable gripping. This not only affects sorting efficiency but may also cause damage to items due to parcels falling. Furthermore, many suction cup devices with angle adjustment functions employ manual presets or a single drive structure, resulting in limited adjustment range and sluggish response, making it impossible to dynamically adapt to the tilt angle of the object's surface in real time. Additionally, these devices struggle to quickly return to their initial state after grasping, affecting the continuity of subsequent grasping actions and further limiting their application in complex scenarios. Utility Model Content

[0003] This application provides a suction cup gripping device that solves the problems of traditional suction cups in the prior art, such as difficulty in adapting to inclined surfaces, unstable gripping, poor adjustment, and slow reset.

[0004] The technical solutions adopted in the embodiments of this application are as follows.

[0005] A suction cup gripping device includes a bracket, a main shaft mounted on the bracket, a suction cup for adsorbing an object, a reset member for repositioning the suction cup, and a universal joint connected to the main shaft. The universal joint is located at the connection between the main shaft and the suction cup. A support plate is mounted on the main shaft. The reset member is mounted on the support plate. Several sets of reset members are arranged in a circumferential array, and the functional end of the reset member abuts against the surface of the suction cup.

[0006] As a further improvement to the above technical solution: The suction cup is provided with a connecting plate; the connecting plate is provided with a lubricating plate; the lubricating plate is provided on the universal joint; the working end of the reset member abuts against the lubricating plate.

[0007] The reset component is a buffer cylinder.

[0008] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages: 1. Under normal conditions, the suction cup is evenly pressed down by four shock absorbers (reset components) in a circumferential array, maintaining its initial horizontal posture. When the robotic arm lowers the device to the surface of an object, if the surface is tilted, the suction cup will rotate flexibly via a universal joint to adaptively conform to the inclined surface, while simultaneously compressing the corresponding shock absorber in the opposite direction, achieving tight contact between the suction cup surface and the object surface. This design overcomes the limitation of traditional suction cups that can only adapt to horizontal surfaces, solving the problem of negative pressure failure caused by poor contact on tilted or uneven surfaces. It is especially suitable for gripping non-horizontal items such as express parcels and irregular workpieces.

[0009] 2. The suction cup has a built-in pressure sensor. When the suction cup rotates with the inclined plane and completely covers the surface of the object, the negative pressure creates a sensor that triggers, providing a real-time "successful grip" signal. This mechanism avoids misjudgments caused by insufficient adhesion in traditional devices, ensuring that subsequent actions are only performed when the suction cup is effectively sealed, significantly improving the grip success rate and reducing the risk of objects falling.

[0010] 3. After the gripping is completed, when the robotic arm lifts the device, the compressed buffer releases its elasticity, pushing the suction cup to rotate in the opposite direction around the universal joint, automatically resetting to a horizontal state. Compared with traditional manual reset or single-drive adjustment devices, this structure can quickly restore the initial posture without additional operation, ensuring the continuity of the next gripping action, and is especially suitable for high-frequency operation scenarios such as logistics sorting and industrial assembly.

[0011] 4. The multi-angle rotation of the universal joint and the flexible support of the buffer form a synergistic mechanism: rotation ensures angle self-adaptation, the buffer provides uniform preload and reset force, and the lubrication plate reduces rotational friction, making the suction cup move smoothly and without jamming during tilting and resetting. Whether it's a slightly inclined surface, an uneven surface, or items of different materials (cardboard, plastic, metal, etc.), this structure can achieve stable gripping, greatly expanding the application range of the device. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the suction cup gripping device in this utility model.

[0013] Figure 2 This is a schematic diagram of the inclined structure of the suction cup gripping device in this utility model.

[0014] In the diagram: 1. Bracket; 2. Spindle; 3. Suction cup; 4. Reset component; 5. Universal joint; 6. Support plate; 7. Connecting plate; 8. Lubrication plate. Detailed Implementation

[0015] This application provides a suction cup gripping device that solves the problems of traditional suction cups in the prior art, such as difficulty in adapting to inclined surfaces, unstable gripping, poor adjustment, and slow reset.

[0016] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows: To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0017] A suction cup gripping device includes a bracket 1, a main shaft 2 mounted on the bracket 1, a suction cup 3 for adsorbing objects, a reset member 4 for repositioning the suction cup 3, and a universal joint 5 connected to the main shaft 2. The universal joint 5 is located at the connection between the main shaft 2 and the suction cup 3. A support plate 6 is mounted on the main shaft 2. The reset member 4 is mounted on the support plate 6. Several sets of reset members 4 are arranged in a circumferential array, and the functional end of the reset member 4 abuts against the surface of the suction cup 3.

[0018] A connecting plate 7 is provided on the suction cup 3; a lubricating plate 8 is provided on the connecting plate 7; the lubricating plate 8 is provided on the universal joint 5; the working end of the reset member 4 abuts against the lubricating plate 8.

[0019] Reset component 4 is a buffer cylinder.

[0020] In its normal state, the suction cup 3 is evenly pressed by four shock absorbers (reset pieces 4) arranged in a circular array, maintaining its initial horizontal posture. When the robotic arm lowers the device to the surface of an object, if the surface is tilted, the suction cup 3 will rotate flexibly via the universal joint 5 to adaptively conform to the inclined surface, while simultaneously compressing the corresponding shock absorber in the opposite direction, achieving tight contact between the suction cup surface and the object surface. This design overcomes the limitation of traditional suction cups 3 being only adaptable to horizontal surfaces, solving the problem of negative pressure failure caused by incomplete contact on tilted or uneven surfaces. It is especially suitable for gripping non-horizontal objects such as express parcels and irregular workpieces. The suction cup 3 has a built-in pressure sensor. When the suction cup 3 rotates with the inclined surface and completely covers the object surface, negative pressure is generated, triggering the sensor and providing real-time feedback of a "successful grip" signal. This mechanism avoids misjudgments caused by insufficient contact in traditional devices, ensuring that subsequent actions are only performed when the suction cup 3 is effectively sealed, significantly improving the gripping success rate and reducing the risk of objects falling. After the gripping is complete, when the robotic arm lifts the device, the compressed buffer releases its elasticity, pushing the suction cup 3 to rotate in the opposite direction around the universal joint 5, automatically resetting to a horizontal position. Compared to traditional manual reset or single-drive adjustment devices, this structure can quickly restore the initial posture without additional operation, ensuring the continuity of the next gripping action, making it particularly suitable for high-frequency operation scenarios such as logistics sorting and industrial assembly. The multi-angle rotation of the universal joint 5 and the flexible support of the buffer form a synergistic mechanism: rotation ensures angle self-adaptation, the buffer provides uniform preload and reset power, and the lubrication plate reduces rotational friction, making the suction cup 3 move smoothly and without jamming during tilting and resetting. Whether it is a slightly inclined surface, an uneven surface, or items of different materials (cardboard, plastic, metal, etc.), this structure can achieve stable gripping, greatly expanding the application range of the device.

[0021] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0022] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A suction cup gripping device, characterized in that, The device includes a bracket (1), a main shaft (2) mounted on the bracket (1), a suction cup (3) for adsorbing items, a reset member (4) for repositioning the suction cup (3), and a universal joint (5) connected to the main shaft (2). The universal joint (5) is located at the connection between the main shaft (2) and the suction cup (3). A support plate (6) is mounted on the main shaft (2). The reset member (4) is mounted on the support plate (6). Several sets of reset members (4) are arranged in a circumferential array, and the working end of the reset member (4) abuts against the surface of the suction cup (3).

2. The suction cup gripping device as described in claim 1, characterized in that, A connecting plate (7) is provided on the suction cup (3); a lubricating plate (8) is provided on the connecting plate (7); the lubricating plate (8) is provided on the universal joint (5); the working end of the reset member (4) abuts against the lubricating plate (8).

3. The suction cup gripping device as described in claim 2, characterized in that, The reset component (4) is a buffer cylinder.

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