Mechanical hand with adjustable distance

Abstract

The utility model relates to manipulator technical field, and disclose a manipulator spacing adjustable manipulator, including rotating base, mechanical arm body, the output fixed mounting of mechanical arm body has special-shaped frame, and the bottom of special-shaped frame is connected with a plurality of straight poles through adjusting assembly, and the circumference of a plurality of straight poles all is fixedly connected with elastic frame, and each elastic frame all is U-shaped structure. The manipulator spacing adjustable manipulator, set up elastic frame and cooperate rubber pole, can carry out steady clamping to the multiple corners of packing box, and the elastic force can buffer force simultaneously, reduce the damage to packing box, protect the safety of goods in packing box, secondly, the cooperation of sliding cylinder and bearing plate, when the packing box is transferred, the bearing plate props up the bottom of packing box, and the elastic frame, rubber pole synergy effect, the multiple sides and bottom of packing box are limited, realize steady clamping, prevent packing box from falling in the transfer process.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, specifically to a robotic arm with adjustable spacing. Background Technology

[0002] A robotic arm is an automated device that can mimic some of the movements of a human arm and hand to grasp, move workpieces, or operate tools according to a predetermined program. It integrates knowledge from multiple disciplines such as mechanical design, electronic technology, computer control, and sensor technology. It is an indispensable key piece of equipment in modern industrial automated production and can be widely used in many fields such as automobile manufacturing, electronic assembly, logistics warehousing, and food processing. It can significantly improve production efficiency, reduce labor intensity, and enhance product quality and production safety.

[0003] An existing patent (publication number: CN222972183U) discloses a robotic arm with adjustable clamping distance, comprising: a mounting base, on the upper surface of which two sets of drive arms are correspondingly arranged, a clamping arm being rotatably mounted at one end of each drive arm, and a rotating shaft being provided at the connection between the drive arm and the clamping arm; a drive assembly, which is disposed within the mounting base, and an adjustment assembly is slidably mounted on one side of the mounting base, one end of which is disposed on the drive assembly for driving the adjustment assembly, and the other end of which is detachably connected to the clamping arm. This invention has the advantage that, in use, activating the drive assembly moves the adjustment assembly, thereby causing the clamping arm to slide accordingly, and then, through the cooperation of the rotating shaft, the clamping arm unfolds, thus achieving adjustment of the clamping distance between the clamping arms and improving the clamping range.

[0004] During use, the aforementioned robotic arm grips goods by rotating two gripping arms. The distance between the two gripping arms can be adjusted to increase the gripping range. However, the two gripping arms are horizontally positioned, and they rely solely on friction to grip the goods, requiring significant pressure to complete the gripping. Furthermore, the hook-shaped structure at the ends of the two gripping arms makes them prone to damaging the goods during gripping. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a robotic arm with adjustable spacing, which has advantages such as adjustable spacing and improved transport stability, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a manipulator with adjustable spacing, comprising a rotating base and a manipulator body. The output end of the manipulator body is fixedly mounted with an irregular frame. The bottom end of the irregular frame is connected to multiple straight rods through an adjustment component. Each of the multiple straight rods is fixedly connected to an elastic frame on its circumference. Each elastic frame has a U-shaped structure, and both ends of each elastic frame are rotatably connected to a rubber rod.

[0007] Each straight rod has a sliding sleeve at its bottom end, and a spring is fixedly connected between the bottom end of each straight rod and the inner wall of the corresponding sliding sleeve. Each sliding sleeve has a bearing plate fixedly connected to its bottom end.

[0008] Furthermore, one side of each of the aforementioned support plates is chamfered and has a triangular structure.

[0009] With the above solution, the sides of the support plate are chamfered and have a triangular structure, which makes it smoother when contacting the bottom of the packaging box, better guides the support plate to fit the bottom of the packaging box, and makes it easier to lift the packaging box.

[0010] Furthermore, the inner diameter of each slide cylinder is larger than the inner diameter of its upper end, and the diameter of the bottom end of each straight rod is larger than the diameter of its upper end, to prevent the straight rod from detaching from the slide cylinder.

[0011] The above solution effectively prevents the straight rod and the sliding cylinder from separating during relative sliding by utilizing structural constraints, thus ensuring the stability of the robotic gripper's holding structure.

[0012] Furthermore, the adjustment assembly includes two sets of limiting frames fixedly connected to the side of the irregular frame, and a slider is fixedly connected to the upper end of each straight rod, and each slider is slidably connected to the corresponding limiting frame;

[0013] The upper surface of the irregular frame is provided with two sliding frames. Each slider has a cylindrical block fixedly connected to its upper surface. Each cylindrical block is in contact with the inner wall of the corresponding sliding frame. The upper diameter of each cylindrical block is larger than its lower diameter and is in contact with the upper surface of the corresponding sliding frame.

[0014] With the above scheme, the slider and the limiting frame are slidably connected, and the cylindrical block contacts the inner wall of the sliding frame, providing stable guidance for the movement of the straight rod and making the movement of the straight rod smoother.

[0015] Furthermore, the adjustment assembly also includes bidirectional electric push rods fixedly connected to the upper surface of the irregular frame, and the two output ends of the two bidirectional electric push rods are respectively fixedly connected to the two sliding frames.

[0016] The above solution utilizes a bidirectional electric actuator to conveniently and quickly control the movement of the two sliding frames, thereby achieving automated adjustment of the distance between the straight rods.

[0017] Furthermore, the adjustment assembly also includes two sliding grooves opened on the upper surface of the irregular frame, and the two sliding frames are slidably connected along the two sliding grooves respectively.

[0018] The above scheme allows the sliding frame to slide along the slide groove, providing guidance for the movement of the sliding frame.

[0019] Furthermore, the irregular frame has a cross-shaped structure, and slide rods are slidably inserted at both ends of its width. Pressure plates are fixedly connected to the bottom ends of the two slide rods, and two springs, which are respectively sleeved on the corresponding slide rods, are fixedly connected between the upper surface of the pressure plate and the irregular frame.

[0020] With the above solution, the irregular cross-shaped structure of the frame, together with the slide bar, pressure plate and spring 2, allows the pressure plate to apply a certain pressure to the top of the packaging box under the action of spring 2 when the robot arm grips the packaging box, further enhancing the fixing effect of the packaging box.

[0021] Furthermore, the robotic arm body is fixedly connected to the output end of the rotating base.

[0022] With the above solution, the robotic arm body is fixedly connected to the output end of the rotating base, enabling the robotic arm to rotate with the rotating base and expand the working range of the robotic arm.

[0023] Compared with the prior art, the technical solution of this utility model has the following beneficial effects:

[0024] This adjustable-space robotic arm features elastic frames and rubber rods that securely grip multiple corners of the packaging box. The elasticity cushions impact forces, reducing damage and protecting the contents. Furthermore, the sliding cylinder works in conjunction with the support plate. During transport, the support plate lifts the bottom of the box, working in tandem with the elastic frames and rubber rods to limit movement on multiple sides and the bottom, ensuring stable gripping and preventing slippage. Finally, adjustable components allow for the adjustment of the spacing between the multiple elastic frames, facilitating the transport of boxes of different sizes. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the irregular frame and adjustment components of this application;

[0026] Figure 2 This is a schematic diagram of the elastic frame and rubber rod structure of this application;

[0027] Figure 3 This is a schematic diagram of the overall structure of this application;

[0028] Figure 4 This is a schematic diagram of the irregular frame and pressure plate structure of this application;

[0029] Figure 5This is a schematic diagram of the irregular frame structure of this application.

[0030] In the picture:

[0031] 1. Rotating base; 2. Robotic arm body; 3. Irregularly shaped frame; 4. Adjustment components;

[0032] 401. Limiting frame; 402. Slider; 403. Sliding frame; 404. Cylindrical block; 405. Bidirectional electric push rod; 406. Slide groove;

[0033] 5. Straight rod; 6. Elastic frame; 7. Rubber rod; 8. Slide cylinder; 9. Spring 1; 10. Bearing plate; 11. Slide rod; 12. Pressure plate; 13. Spring 2. Detailed Implementation

[0034] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0035] Please see Figures 1-5 This embodiment of a manipulator with adjustable spacing includes a rotating base 1 and a manipulator body 2. A non-circular frame 3 is fixedly installed at the output end of the manipulator body 2. The bottom end of the non-circular frame 3 is connected to multiple straight rods 5 through an adjustment component 4. Elastic frames 6 are fixedly connected to the circumferential surfaces of the multiple straight rods 5. Each elastic frame 6 has a U-shaped structure, and rubber rods 7 are rotatably connected to both ends of each elastic frame 6. The elastic frame 6 is made of elastic metal and can clamp and fix multiple corners of the packaging box through the cooperation of the rubber rods 7. At the same time, the elastic force of the elastic frame 6 can reduce damage to the packaging box.

[0036] Each straight rod 5 has a sliding sleeve 8 at its bottom end. A spring 9 is fixedly connected between the bottom end of each straight rod 5 and the inner wall of the corresponding sliding sleeve 8. A bearing plate 10 is fixedly connected to the bottom end of each sliding sleeve 8. The cooperation between the sliding sleeve 8 and the bearing plate 10 allows the bearing plate 10 to contact and lift the bottom of the packaging box during the transfer process. In cooperation with the elastic frame 6 and the rubber rod 7, the bearing plate 10 can limit the movement of multiple sides and the bottom of the packaging box, thereby achieving stable clamping of the packaging box.

[0037] Each support plate 10 has a chamfered side and a triangular structure. The chamfered sides and triangular structure of the support plate 10 make it easier to contact the bottom of the packaging box and better guide the support plate 10 to fit the bottom of the packaging box, making it easier to lift the packaging box. The inner diameter of each slide cylinder 8 is larger than the inner diameter of its upper end, and the diameter of the bottom end of each straight rod 5 is larger than the diameter of its upper end. This prevents the straight rod 5 from detaching from the slide cylinder 8. By using structural constraints, the straight rod 5 and the slide cylinder 8 are effectively prevented from detaching during relative sliding, ensuring the stability of the robotic gripper structure.

[0038] The adjustment component 4 includes two sets of limiting frames 401 fixedly connected to the side of the irregular frame 3. A slider 402 is fixedly connected to the upper end of each straight rod 5. Each slider 402 is slidably connected to the corresponding limiting frame 401. Two sliding frames 403 are provided on the upper surface of the irregular frame 3. A cylindrical block 404 is fixedly connected to the upper surface of each slider 402. Each cylindrical block 404 contacts the inner wall of the corresponding sliding frame 403. The upper diameter of each cylindrical block 404 is larger than its lower diameter and contacts the upper surface of the corresponding sliding frame 403. The slider 402 is slidably connected to the limiting frame 401, and the cylindrical block 404 contacts the inner wall of the sliding frame 403, thus... The movement of the straight rod 5 provides stable guidance, making the movement of the straight rod 5 smoother. The adjustment component 4 also includes two bidirectional electric push rods 405 fixedly connected to the upper surface of the irregular frame 3. The two output ends of the two bidirectional electric push rods 405 are respectively fixedly connected to the two sliding frames 403. Using the bidirectional electric push rods 405, the movement of the two sliding frames 403 can be conveniently and quickly controlled, thereby realizing the automatic adjustment of the distance between the straight rods 5. The adjustment component 4 also includes two sliding grooves 406 opened on the upper surface of the irregular frame 3. The two sliding frames 403 are slidably connected along the two sliding grooves 406 respectively. The sliding frames 403 slide along the sliding grooves 406, providing guidance for the movement of the sliding frames 403.

[0039] The irregular frame 3 has a cross-shaped structure, and slide rods 11 are slidably inserted at both ends of its width. The bottom ends of the two slide rods 11 are fixedly connected to pressure plates 12. The upper surface of the pressure plates 12 is fixedly connected to the irregular frame 3, and two springs 13 are respectively sleeved on the corresponding slide rods 11. The cross-shaped structure of the irregular frame 3, together with the slide rods 11, pressure plates 12 and springs 13, allows the pressure plates 12 to apply a certain pressure to the top of the packaging box under the action of the springs 13 when the robot arm is holding the packaging box, further enhancing the fixing effect of the packaging box. The robot arm body 2 is fixedly connected to the output end of the rotating base 1, so that the robot arm can rotate with the rotating base 1 and expand the working range of the robot arm.

[0040] The working principle of the above embodiment is as follows: First, when the packaging box is transferred, the rotating base 1 drives the robotic arm body 2 to rotate, so that the robotic arm body 2 drives the irregular frame 3 to be above the packaging box, and drives the pressure plate 12 to contact the upper surface of the packaging box, and compresses the spring 13. Then, the bidirectional electric push rod 405 drives the two sliding frames 403 to move closer, so that the two sliding frames 403 respectively drive the corresponding cylindrical blocks 404 to move. After being subjected to force, the cylindrical blocks 404 will slide within the limiting frame 401, and drive multiple straight rods 5 to move closer to the packaging box, so that the straight rods 5 drive multiple rubber rods 7 to contact the packaging box. At this time, multiple The corners are located within multiple elastic frames 6. The deformation force of the elastic frames 6 is used to clamp the packaging box via rubber rods 7. When the irregular frame 3 approaches the packaging box, multiple support plates 10 contact the ground and slide along the bottom of the corresponding straight rods 5, compressing the spring 13. When the multiple straight rods 5 approach the packaging box, multiple support plates 10 contact the bottom of the packaging box. With the cooperation of spring 9 and pressure plate 12, pressure is applied to the top of the packaging box, while the support plates 10 can support the bottom of the packaging box. Multiple rubber rods 7 limit the multiple corners of the packaging box, thereby achieving stable clamping of the packaging box and preventing the packaging box from slipping during transportation.

[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0042] Although embodiments of this application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A robotic arm with adjustable spacing, comprising a rotating base (1) and a robotic arm body (2), characterized in that: The output end of the robotic arm body (2) is fixedly installed with a shaped frame (3). The bottom end of the shaped frame (3) is connected to multiple straight rods (5) through an adjustment component (4). The circumferential surfaces of the multiple straight rods (5) are all fixedly connected with elastic frames (6). Each elastic frame (6) has a U-shaped structure, and both ends of each elastic frame (6) are rotatably connected with rubber rods (7). Each straight rod (5) has a sliding sleeve (8) at its bottom end. A spring (9) is fixedly connected between the bottom end of each straight rod (5) and the inner wall of the corresponding sliding sleeve (8). A bearing plate (10) is fixedly connected to the bottom end of each sliding sleeve (8).

2. The manipulator with adjustable spacing according to claim 1, characterized in that: Each of the bearing plates (10) has a chamfered side and a triangular structure.

3. The manipulator with adjustable spacing according to claim 1, characterized in that: The inner diameter of each of the slide cylinders (8) is greater than the inner diameter of its upper end, and the diameter of the bottom end of each straight rod (5) is greater than the diameter of its upper end, to prevent the straight rod (5) from detaching from the slide cylinder (8).

4. The manipulator with adjustable spacing according to claim 1, characterized in that: The adjustment component (4) includes two sets of limiting frames (401) fixedly connected to the side of the irregular frame (3), and a slider (402) is fixedly connected to the upper end of each straight rod (5), and each slider (402) is slidably connected to the corresponding limiting frame (401). The upper surface of the irregular frame (3) is provided with two sliding frames (403). Each slider (402) has a cylindrical block (404) fixedly connected to its upper surface. Each cylindrical block (404) is in contact with the inner wall of the corresponding sliding frame (403). The upper diameter of each cylindrical block (404) is larger than its lower diameter and is in contact with the upper surface of the corresponding sliding frame (403).

5. A robotic arm with adjustable spacing according to claim 4, characterized in that: The adjustment assembly (4) also includes bidirectional electric push rods (405) fixedly connected to the upper surface of the irregular frame (3), and the two output ends of the two bidirectional electric push rods (405) are fixedly connected to the two sliding frames (403) respectively.

6. A robotic arm with adjustable spacing according to claim 4, characterized in that: The adjustment component (4) also includes two slide grooves (406) opened on the upper surface of the irregular frame (3), and the two sliding frames (403) are slidably connected along the two slide grooves (406) respectively.

7. A robotic arm with adjustable spacing according to claim 1, characterized in that: The irregular frame (3) has a cross-shaped structure, and slide rods (11) are slidably inserted at both ends of its width. The bottom ends of the two slide rods (11) are fixedly connected to pressure plates (12). The upper surface of the pressure plate (12) is fixedly connected to the irregular frame (3) with two springs (13) respectively sleeved on the corresponding slide rods (11).

8. A robotic arm with adjustable spacing according to claim 1, characterized in that: The robotic arm body (2) is fixedly connected to the output end of the rotating base (1).

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