Magnetic attraction type power-assisted mechanical arm

Abstract

The utility model relates to a magnetic type power-assisted mechanical arm, which belongs to the technical field of logistics transportation and comprises a base, a mechanical arm body rotatably mounted at the top of the base, a fixed seat fixedly connected to the output end of the mechanical arm body and a plurality of electromagnets arranged at the bottom of the fixed seat. An adjusting mechanism extending to the outside of the fixing seat is arranged in the fixing seat, a fixing mechanism is arranged outside the base, and the adjusting mechanism comprises a gear motor fixedly installed on the inner bottom wall of the fixing seat. According to the magnetic attraction type power-assisted mechanical arm, a gear motor is started to work through a controller to drive a transmission gear to rotate, so that four threaded blocks drive electromagnets to get close to or be separated from each other through connecting rods, the distance between the electromagnets is conveniently adjusted according to the size of an object, and therefore the magnetic attraction range of the electromagnets is changed; the adaptability of the mechanical arm body to objects of different sizes is improved, and the advantage that the magnetic attraction range is conveniently adjusted according to the sizes of the objects is achieved.

Description

Technical Field

[0001] This utility model relates to the field of logistics handling technology, specifically a magnetically assisted robotic arm. Background Technology

[0002] A magnetic robotic arm is an industrial robot designed using electromagnetic principles. It possesses excellent adhesion and flexibility, and has wide applications in various fields. The working principle of a magnetic robotic arm is primarily based on the combination of magnetic force and a mechanism. It typically consists of two or more parts: a magnetic base fixed to the machine tool or worktable, which generates a strong magnetic field; and a robotic arm that needs to be attracted and moved, equipped with a corresponding number of magnetic poles that magnetically attract the robotic arm to the magnetic base. When an electric current passes through the magnetic poles, a magnetic field is generated. The magnetic poles on the robotic arm form a strong magnetic attraction force through the magnetic lines of force, which can meet different clamping requirements and achieve accurate workpiece alignment.

[0003] Magnetic-assisted robotic arms are needed in logistics handling. In existing technologies, the magnetic poles of the electromagnets in magnetic-assisted robotic arms gradually weaken, meaning that when picking up objects, a cone shape is formed under the picking structure. The magnetic force at the tip of the cone is weak, which makes it easy for the object to fall off when moving. This makes it difficult to adapt to objects of different sizes and shapes, especially when handling large or irregularly shaped objects, resulting in low efficiency. In addition, stability is also an important consideration in the design of robotic arms, and this technology cannot meet the usage requirements. Therefore, a magnetic-assisted robotic arm is proposed to solve the problems mentioned above. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a magnetically assisted robotic arm that offers advantages such as easy adjustment of the magnetic attraction range according to the size of the object and high stability. It solves the problem that in existing magnetically assisted robotic arms, the magnetic poles of the electromagnet gradually weaken, forming a cone shape under the attraction structure when picking up an object. The magnetic force at the tip of the cone is weak, causing the object to easily detach during movement. This makes it difficult to adapt to objects of different sizes and shapes, especially when handling large or irregularly shaped objects, resulting in low efficiency. Furthermore, stability is also a crucial consideration in robotic arm design, and this invention fails to meet the requirements of use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a magnetically assisted robotic arm, comprising a base, a robotic arm body rotatably mounted on the top of the base, a fixed seat fixedly connected to the output end of the robotic arm body, and a plurality of electromagnets disposed at the bottom of the fixed seat. The fixed seat is provided with an adjustment mechanism extending to its exterior, and the base is provided with a fixing mechanism on its exterior.

[0006] The adjustment mechanism includes a geared motor fixedly installed on the inner bottom wall of the fixed base and a threaded rod rotatably connected inside the fixed base. A transmission gear is fixedly connected to the output shaft of the geared motor. A driven gear that meshes with the transmission gear is fixedly connected to the end of the threaded rod away from the fixed base. A threaded block is threadedly connected to the outside of the threaded rod. A connecting rod extending to the outside of the fixed base is fixedly connected to the bottom of the threaded block.

[0007] The fixing mechanism includes a mounting base fixedly connected to the outside of the base. A hydraulic cylinder extending to the lower surface of the mounting base is fixedly mounted on the upper surface of the mounting base, and a vacuum suction cup is fixedly connected to the output end of the hydraulic cylinder.

[0008] Furthermore, there are four threaded rods and four driven gears, and the four threaded rods and four driven gears are distributed in a ring shape inside the fixed base.

[0009] Furthermore, the four driven gears are arranged in a ring shape on the upper surface of the transmission gear, and a maintenance plate is detachably connected to the bottom of the fixed base.

[0010] Furthermore, the fixed base has an internal movable opening that matches the connecting rod, and the electromagnet is fixedly connected to the bottom end of the connecting rod by bolts. Several electromagnets are distributed in a rectangular shape at the bottom of the fixed base.

[0011] Furthermore, the fixed base has four guide rods fixedly connected inside, and the four threaded blocks are slidably connected to the outside of the four guide rods respectively.

[0012] Furthermore, a signal connection line is fixedly connected to the outside of the vacuum suction cup, and the vacuum suction cup and the signal connection line are connected by an electrical signal. There are two of each of the hydraulic cylinder, the vacuum suction cup, and the signal connection line.

[0013] Furthermore, there are two fixing mechanisms, which are symmetrically distributed on the outside of the base.

[0014] Compared with the prior art, this utility model provides a magnetically assisted robotic arm with the following features:

[0015] Beneficial effects:

[0016] 1. This magnetically assisted robotic arm uses a controller to start a reduction motor that drives a transmission gear to rotate. This gear meshes and drives four driven gears and a threaded rod to rotate. The four threaded blocks then move the electromagnets closer together or apart via connecting rods. This allows for easy adjustment of the distance between the electromagnets according to the size of the object, thereby changing the magnetic attraction range of the electromagnets and improving the adaptability of the robotic arm to objects of different sizes. By setting a guide rod, the stability of the electromagnets during adjustment is effectively improved, achieving the advantage of easily adjusting the magnetic attraction range according to the size of the object.

[0017] 2. This magnetically assisted robotic arm uses a controller to activate the hydraulic cylinder to extend and retract, causing the vacuum suction cup to move downwards and contact the worktable. Then, the vacuum suction cup is activated via a signal connection line to create a vacuum with the worktable, which effectively enhances the stability of the robotic arm body during automatic posture adjustment and ensures stability during the handling process, achieving the advantage of high stability. Attached Figure Description

[0018] Figure 1 This is a three-dimensional view of the structure of this utility model;

[0019] Figure 2 This is a three-dimensional structural view of the adjustment mechanism of this utility model;

[0020] Figure 3 This is a three-dimensional structural view of the fixing mechanism of this utility model.

[0021] In the diagram: 1. Base; 2. Robotic arm body; 3. Fixed seat; 4. Gear motor; 5. Transmission gear; 6. Driven gear; 7. Threaded rod; 8. Threaded block; 9. Connecting rod; 10. Guide rod; 11. Mounting seat; 12. Hydraulic cylinder; 13. Vacuum suction cup; 14. Signal connection cable; 15. Electromagnet. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1 to 3This embodiment of a magnetically assisted robotic arm includes a base 1, a robotic arm body 2 rotatably mounted on the top of the base 1, a fixed seat 3 fixedly connected to the output end of the robotic arm body 2, and several electromagnets 15 disposed at the bottom of the fixed seat 3. The fixed seat 3 has an adjustment mechanism extending to its outside, and the base 1 has a fixing mechanism on its outside. The adjustment mechanism includes a reduction motor 4 fixedly mounted on the inner bottom wall of the fixed seat 3 and a threaded rod 7 rotatably connected to the inside of the fixed seat 3. A transmission gear 5 is fixedly connected to the output shaft of the reduction motor 4. A driven gear 6 that meshes with the transmission gear 5 is fixedly connected to the end of the threaded rod 7 away from the fixed seat 3. A threaded block 8 is threadedly connected to the outside of the threaded rod 7, and a connecting rod 9 extending to the outside of the fixed seat 3 is fixedly connected to the bottom of the threaded block 8. The controller starts the geared motor 4 to drive the transmission gear 5 to rotate, which in turn drives the four driven gears 6 and the threaded rod 7 to rotate. This causes the four threaded blocks 8 to move the electromagnets 15 closer or further apart through the connecting rod 9. This allows the distance between the electromagnets 15 to be adjusted according to the size of the object, thereby changing the magnetic attraction range of the electromagnets 15 and improving the adaptability of the robotic arm body 2 to objects of different sizes.

[0024] There are four threaded rods 7 and four driven gears 6, and the four threaded rods 7 and four driven gears 6 are distributed in a ring shape inside the fixed seat 3.

[0025] Specifically, four driven gears 6 are arranged in a ring shape on the upper surface of the transmission gear 5, and a maintenance plate is detachably connected to the bottom of the fixed base 3.

[0026] It should be noted that the fixed base 3 has an internal moving port that is compatible with the connecting rod 9. The electromagnet 15 is fixedly connected to the bottom end of the connecting rod 9 by bolts. Several electromagnets 15 are distributed in a rectangular shape at the bottom of the fixed base 3.

[0027] In addition, four guide rods 10 are fixedly connected inside the fixed base 3, and four threaded blocks 8 are slidably connected to the outside of the four guide rods 10 respectively.

[0028] In this embodiment, the fixing mechanism includes a mounting base 11 fixedly connected to the outside of the base 1. A hydraulic cylinder 12 extending to its lower surface is fixedly mounted on the upper surface of the mounting base 11, and a vacuum suction cup 13 is fixedly connected to the output end of the hydraulic cylinder 12. By starting the hydraulic cylinder 12 to extend and retract, the vacuum suction cup 13 moves downward to contact the worktable. Then, the vacuum suction cup 13 is activated through the signal connection line 14 to form a vacuum with the worktable, which can effectively enhance the stability of the robotic arm body 2 during automatic posture adjustment.

[0029] The vacuum suction cup 13 is externally fixedly connected to a signal connection line 14. The vacuum suction cup 13 and the signal connection line 14 are connected by an electrical signal. There are two hydraulic cylinders 12, two vacuum suction cups 13, and two signal connection lines 14.

[0030] Specifically, there are two fixing mechanisms, which are symmetrically distributed on the outside of the base 1.

[0031] The working principle of the above embodiments is as follows:

[0032] In use, the controller starts the hydraulic cylinder 12 to extend and retract, driving the vacuum suction cup 13 to move downward and contact the worktable. Then, the signal connection line 14 starts the vacuum suction cup 13 to work and form a vacuum with the worktable, which effectively enhances the stability of the robotic arm body 2 when the posture is automatically adjusted. The controller starts the reduction motor 4 to work and drive the transmission gear 5 to rotate, so that the transmission gear 5 meshes and drives the four driven gears 6 and the threaded rod 7 to rotate, so that the four threaded blocks 8 drive the electromagnets 15 to move closer or further apart through the connecting rod 9. This makes it easy to adjust the distance between the electromagnets 15 according to the size of the object, thereby changing the magnetic attraction range of the electromagnets 15.

[0033] The installation, connection, or setting methods disclosed in this embodiment are all common mechanical connection methods. Any method that can achieve its beneficial effect can be implemented. In addition, the electrical components in this embodiment are all electrically connected to the main controller and the power supply. The main controller can be a conventional known device such as a computer that plays a control role. Those skilled in the art can control the electrical components through simple programming. Moreover, the existing disclosed power connection technology is also common knowledge in the field. Therefore, the specific structural composition and working principle will not be described in detail in this embodiment.

[0034] 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.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A magnetically assisted robotic arm, characterized in that: The system includes a base (1), a robotic arm body (2) rotatably mounted on the top of the base (1), a fixed seat (3) fixedly connected to the output end of the robotic arm body (2), and a number of electromagnets (15) disposed at the bottom of the fixed seat (3). The fixed seat (3) is provided with an adjustment mechanism extending to its outside, and the base (1) is provided with a fixing mechanism on its outside. The adjustment mechanism includes a geared motor (4) fixedly installed on the inner bottom wall of the fixed base (3) and a threaded rod (7) rotatably connected inside the fixed base (3). A transmission gear (5) is fixedly connected to the output shaft of the geared motor (4). A driven gear (6) that meshes with the transmission gear (5) is fixedly connected to one end of the threaded rod (7) away from the fixed base (3). A threaded block (8) is threadedly connected to the outside of the threaded rod (7). A connecting rod (9) extending to the outside of the fixed base (3) is fixedly connected to the bottom of the threaded block (8). The fixing mechanism includes a mounting base (11) fixedly connected to the outside of the base (1). A hydraulic cylinder (12) extending to its lower surface is fixedly mounted on the upper surface of the mounting base (11). A vacuum suction cup (13) is fixedly connected to the output end of the hydraulic cylinder (12).

2. The magnetically assisted robotic arm according to claim 1, characterized in that: The number of threaded rods (7) and driven gears (6) are four in total, and the four threaded rods (7) and driven gears (6) are distributed in a ring shape inside the fixed seat (3).

3. The magnetically assisted robotic arm according to claim 1, characterized in that: The four driven gears (6) are arranged in a ring shape on the upper surface of the transmission gear (5), and the bottom of the fixed seat (3) is detachably connected to a maintenance plate.

4. The magnetically assisted robotic arm according to claim 1, characterized in that: The fixed base (3) has a movable opening inside that is compatible with the connecting rod (9). The electromagnet (15) is fixedly connected to the bottom end of the connecting rod (9) by bolts. Several electromagnets (15) are distributed in a rectangular shape at the bottom of the fixed base (3).

5. A magnetically assisted robotic arm according to claim 1, characterized in that: The fixed base (3) has four guide rods (10) fixedly connected inside, and the four threaded blocks (8) are slidably connected to the outside of the four guide rods (10).

6. A magnetically assisted robotic arm according to claim 1, characterized in that: The vacuum suction cup (13) is externally fixedly connected to a signal connection line (14). The vacuum suction cup (13) and the signal connection line (14) are connected by an electrical signal. There are two hydraulic cylinders (12), two vacuum suction cups (13), and two signal connection lines (14).

7. A magnetically assisted robotic arm according to claim 1, characterized in that: The number of fixing mechanisms is two, and the two fixing mechanisms are symmetrically distributed on the outside of the base (1).

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