Multi-shaft mechanical arm simple in structure and convenient to install

Abstract

The multi-shaft mechanical arm simple in structure and convenient to install comprises a base mechanism and at least one bent arm set, the base mechanism comprises a base shell and a base motor fixedly arranged in the base shell, and each bent arm set comprises two bent arms and a connecting arm; the bent arms are in an L shape, the two ends of the connecting arm are connected with the two bent arms respectively, and the end, away from the connecting arm, of at least one bent arm is fixedly connected with the output end of the base motor and rotates along with the output end of the base motor. The bent arms of the adjacent bent arm sets are rotationally connected, and the bent arm sets are connected together in series. According to the multi-axis mechanical arm, the L-shaped bent arms and the connecting arms are combined to form the bent arm sets, movement of multiple joints is achieved through one bent arm set, the structural arrangement of the multiple bent arm sets is beneficial to control algorithm calculation of the multi-axis mechanical arm, parts of the bent arm sets are installed efficiently, the structure is compact, and wiring debugging is convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of mechanical arms, and in particular to a multi-axis mechanical arm with a simple structure and convenient installation. Background Art

[0002] A robotic arm is one of the most common devices in the field of robotic technology. It includes a base and a robotic arm body disposed on the base. The robotic arm body includes multiple joints, and each joint is provided with a corresponding motor, so that the robotic arm as a whole has high flexibility.

[0003] The existing multi-axis robotic arms have the same shape and structure for each joint, and the connection between the joints is relatively simple, which has the disadvantages of complex structure and high difficulty in installation and disassembly. Due to the above disadvantages, the existing multi-axis robotic arms have the problems of insufficient movement sensitivity when working through algorithms, and inconvenient installation, disassembly, wiring and debugging. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a multi-axis robotic arm with a simple structure and easy installation. A bending arm group is formed by combining an "L"-shaped bending arm and a connecting arm. One bending arm group realizes the movement of multiple joints. The structural arrangement of multiple bending arm groups is conducive to the calculation of the multi-axis robotic arm control algorithm, and the components of the bending arm group are efficiently installed and the structure is compact, which facilitates wiring debugging.

[0005] The present invention provides a multi-axis mechanical arm with a simple structure and convenient installation, comprising a base mechanism and at least one set of bending arm groups, wherein the base mechanism comprises a base housing and a base motor fixedly arranged therein, and the bending arm group comprises two bending arms and a connecting arm;

[0006] The bent arm is "L"-shaped, and the two ends of the connecting arm are respectively connected to the two bent arms. One end of at least one bent arm away from the connecting arm is fixedly connected to the output end of the base motor and rotates therewith; the bent arms of adjacent bent arm groups are rotationally connected and multiple groups of bent arm groups are connected in series.

[0007] Specifically, the bending arm includes a bending arm shell and a bending arm motor, the bending arm shell is an "L"-shaped bending pipe, the bending arm motor is fixedly arranged at one end of the bending arm shell, and the output end of the bending arm motor is arranged to face outside the bending arm shell.

[0008] Specifically, the bending arm includes two bending arm motors, which are respectively fixedly arranged at two ends of the bending arm housing, and the output ends of the bending arm motors are both arranged to face outside the bending arm housing.

[0009] Specifically, the bending arm further includes an inspection cover, and an inspection opening is opened on the bending arm housing, the inspection opening faces the side of the bending arm motor facing away from the output end, and the inspection cover is detachably mounted on the inspection opening.

[0010] Specifically, the base shell, the bent arm and the connecting arm are all provided with interconnected wiring channels, and the base motor and the bent arm motor are both arranged in the wiring channels.

[0011] Specifically, the connecting arm is a straight arm, and both ends of the connecting arm are rotatably connected to the two curved arms respectively, or one end is rotatably connected to the curved arm and the other end is fixedly connected to the other curved arm.

[0012] Specifically, the multi-axis robot arm further includes a switching component, which is mounted on the bending arm of the bending arm group away from the base mechanism and is used for switching the operating device.

[0013] Specifically, the multi-axis robotic arm also includes a connecting piece, which is a circular ring, the bottom of which is fixedly connected to the output end of the base motor, and the side of which is fixedly connected to one end of the bending arm shell.

[0014] Specifically, the connecting piece and the bending arm are fixedly connected radially by fasteners, and a plurality of fastener mounting holes for fasteners to pass through are provided on the bending arm shell. A groove is also provided on the bending arm shell, and the fastener mounting hole is arranged at the bottom of the groove. The multi-axis robotic arm also includes a decorative piece, which is installed in the groove to cover the fastener mounting hole.

[0015] Specifically, a first boss is provided on one end face of the base shell facing the connecting member, and a second boss is correspondingly provided on the bottom of the connecting member. When the connecting member rotates to a preset angle along with the output end of the base motor, the first boss abuts against the second boss to achieve limiting.

[0016] To sum up, the multi-axis robotic arm of the present invention has a simple structure and is easy to install. A bending arm group is formed by combining an "L"-shaped bending arm and a connecting arm. One bending arm group realizes the movement of multiple joints. The structural arrangement of multiple bending arm groups is conducive to the calculation of the multi-axis robotic arm control algorithm, and the components of the bending arm group are efficiently installed and the structure is compact, which facilitates wiring and debugging.

[0017] Optionally, the bending arm further comprises an inspection cover, and an inspection opening is provided on the bending arm housing, and the inspection cover is detachably mounted on the inspection opening, so as to facilitate installation and debugging of the bending arm motor and internal wiring.

[0018] Optionally, the base housing, the curved arm and the connecting arm are all provided with interconnected wiring channels, and the base motor and the curved arm motor are both arranged in the wiring channels. The power supply line, signal line, control line and other lines of each motor can be arranged in the wiring channel, and multiple motors can be connected in series or in parallel to achieve better circuit control.

[0019] Optionally, a first boss is provided on one end surface of the base shell facing the connecting member, and a second boss is correspondingly provided on the bottom of the connecting member. The first boss cooperates with the second boss to realize the function of limiting the angle of the bending arm. Each boss is hidden and built into the bending arm shell or the base shell, which can improve the safety of the multi-axis robot arm when in use without affecting the appearance. Moreover, the design of the first boss and the second boss can also be applied between the bending arm and the connecting arm or between two bending arms, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 Schematic diagram of the structure of a multi-axis robotic arm in an embodiment of the present invention;

[0022] Figure 2 An exploded view of the structure of a multi-axis robotic arm in an embodiment of the present invention;

[0023] Figure 3 The structure explosion of the bending arm in the embodiment of the present invention Figure 1 ;

[0024] Figure 4 The structure explosion of the bending arm in the embodiment of the present invention Figure 2 ;

[0025] Figure 5 It is a structural exploded diagram of the base mechanism in an embodiment of the present invention;

[0026] Figure 6 Schematic diagram of the connection structure between the base structure and the bent arm in an embodiment of the present invention;

[0027] Figure 7 An exploded view of the connection structure between the base structure and the bent arm in an embodiment of the present invention;

[0028] Figure 8 It is a cross-sectional view of the connection structure between the base structure and the bent arm in an embodiment of the present invention;

[0029] Fig. 9 It is a structural schematic diagram of a base structure and a connecting member in an embodiment of the present invention;

[0030] Fig.10 It is a top view of the connection structure between the base structure and the connecting member in an embodiment of the present invention.

[0031] The reference numerals of the embodiments of the present invention in the above drawings are as follows:

[0032] 100, base mechanism; 110, base housing; 111, first boss; 120, base motor; 130, base end cover;

[0033] 200, bent arm group;

[0034] 210, bending arm; 211, bending arm housing; 2111, inspection port; 2112, mounting flange; 2113, first mounting hole; 2114, fastener mounting hole; 2115, groove; 212, bending arm motor; 213, inspection cover; 2131, second mounting hole; 2132, mounting recess;

[0035] 220, connecting arm; 221, connecting arm end cover;

[0036] 300, adapter;

[0037] 400, connecting member; 410, second boss;

[0038] 500. Decorative parts. DETAILED DESCRIPTION

[0039] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the description of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0041] The directions or positional relationships indicated by terms such as “upper”, “lower”, “left”, “right”, “front”, “back”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of description and simplified description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0042] The terms "first", "second", "third" and the like are merely used to distinguish elements of similar nature, and do not indicate or imply relative importance or a particular order.

[0043] The terms "comprises," "comprising," or any other variations thereof, are intended to cover a non-exclusive inclusion of the elements listed and may also include additional elements not expressly listed.

[0044] The following is a detailed description through specific embodiments.

[0045] like Figures 1 to 10 As shown, the embodiment of the present invention provides a multi-axis robot arm with a simple structure and convenient installation, including a base mechanism 100 and at least one set of bending arm groups 200, the base mechanism 100 includes a base housing 110 and a base motor 120 fixedly arranged therein, and the bending arm group 200 includes two bending arms 210 and a connecting arm 220;

[0046] The bending arm 210 is "L"-shaped, and the two ends of the connecting arm 220 are respectively connected to the two bending arms 210. At least one end of the bending arm 210 away from the connecting arm 220 is fixedly connected to the output end of the base motor 120 and rotates therewith; the bending arms 210 of adjacent bending arm groups 200 are rotationally connected and multiple groups of bending arm groups 200 are connected in series.

[0047] Specifically, Figure 1 and Figure 2 As shown, this embodiment includes two groups of bending arm groups 200, wherein for the convenience of explanation, the bending arm group 200 near the base mechanism 100 at the bottom is called the first bending arm group 200, and the bending arm group 200 near the adapter 300 at the top is called the second bending arm group 200.

[0048] The first bending arm group 200 includes two bending arms 210 and a connecting arm 220, each bending arm 210 includes a bending arm motor 212, the output ends of the bending arm motor 212 are all facing the connecting arm 220 and are fixedly connected to the connecting arm 220, and the bending arms 210 and the connecting arms 220 rotate relative to each other (that is, they are rotationally connected); the ends of the two bending arms 210 that are not provided with the bending arm motor 212 are respectively fixedly connected to the output ends of the base motor 120 and the output ends of the bending arm motor 212 of the second bending arm group 200, so that one bending arm 210 and the base mechanism 100 rotate relative to each other, and one bending arm 210 and the second bending arm group 200 rotate relative to each other.

[0049] The second bending arm group 200 includes two bending arms 210 and a connecting arm 220, wherein the bending arm 210 at the bottom near the first bending arm group 200 includes two bending arm motors 212, and the output ends of the two bending arm motors 212 are respectively directed toward the connecting arm 220 of the second bending arm group 200 and the bending arm 210 of the first bending arm group 200, and are respectively fixedly connected to them, so that the first bending arm group 200 and the second bending arm group 200 can rotate relative to each other, and the bending arm 210 of the second bending arm group 200 can rotate relative to each other; the other bending arm 210 at the top near the adapter 300 of the second bending arm group 200 includes a bending arm motor 212, and the output end of the bending arm motor 212 is directed toward the adapter 300, and is fixedly connected to the adapter 300, so that the bending arm 210 and the adapter 300 can rotate relative to each other, and the end of the bending arm 210 without the bending arm motor 212 is fixedly connected to the connecting arm 220.

[0050] The structure and working principle of the arm motor 212 are consistent with those of the base motor 120. The motor body is fixed to one end of the base housing 110 or the arm housing 211, and the output end can rotate relative to the motor body (i.e., the base housing 110 or the arm housing 211). For example, the base motor 120 is fixed to one end of the base housing 110, and the output end is fixedly connected to one end of the arm 210. The output end drives the arm 210 to rotate, so that the arm 210 and the base mechanism 100 rotate relative to each other.

[0051] Each motor represents one degree of freedom. The multi-axis robotic arm in this embodiment has six motors and is a six-axis robotic arm.

[0052] In this embodiment, the bending arm 210 includes a bending arm shell 211 and a bending arm motor 212. The bending arm shell 211 is an "L"-shaped bent pipe. The bending arm motor 212 is fixedly arranged at one end of the bending arm shell 211, and the output end of the bending arm motor 212 is arranged to face outside the bending arm shell 211.

[0053] In this embodiment, the bending arm 210 includes two bending arm motors 212 , which are respectively fixedly disposed at two ends of the bending arm housing 211 , and the output ends of the bending arm motors 212 are both arranged to face outside the bending arm housing 211 .

[0054] Specifically, the bending arm 210 below the second bending arm group 200 and close to the first bending arm group 200 includes two bending arm motors 212 , and the two bending arm motors 212 are respectively fixedly arranged at two ends of the bending arm housing 211 .

[0055] like Figure 3 and Figure 4 As shown, in this embodiment, the bending arm 210 also includes an inspection cover 213, and an inspection port 2111 is opened on the bending arm shell 211, the inspection port 2111 faces the side of the bending arm motor 212 facing away from the output end, and the inspection cover 213 is detachably installed on the inspection port 2111.

[0056] Specifically, the inspection port 2111 faces the side of the bending arm motor 212 facing away from the output end, which is convenient for wiring arrangement and debugging of the bending arm motor 212. Each inspection cover 213 can be disassembled independently and provides a larger operating space. Optionally, each bending arm 210 is provided with this structure.

[0057] A mounting flange 2112 is designed on one side edge of the inspection port 2111 of the bent arm housing 211, and a first mounting hole 2113 is provided on the other side of the inspection port 2111 on the bent arm housing 211. A mounting recess 2132 is provided on one side edge of the inspection cover 213, and a second mounting hole 2131 is provided on the other side edge of the inspection cover 213. After the mounting flange 2112 and the mounting recess 2132 are matched to achieve snap connection, the first mounting hole 2113 and the second mounting hole 2131 are matched to fix the inspection cover 213 and the bent arm housing 211 with fasteners or the like. The design of the inspection cover 213 simplifies the parts structure, reduces the number of fasteners required for installing the inspection cover 213, and makes installation and disassembly more convenient.

[0058] like Figure 5 As shown, in this embodiment, the base mechanism 100 also includes a base end cover 130, which is detachably arranged at the bottom of the base shell 110, so as to facilitate the inspection of the lower part of the base motor 120 and the circuit inside the base shell 110.

[0059] In this embodiment, the base housing 110, the bent arm 210 and the connecting arm 220 are all provided with interconnected wiring channels, and the base motor 120 and the bent arm motor 212 are both arranged in the wiring channels.

[0060] Specifically, the power supply lines, signal lines, control lines and other lines of each motor can be arranged in the wiring channel, and multiple motors can be connected in series or in parallel to achieve better circuit control.

[0061] like Figure 2 As shown, in this embodiment, the connecting arm 220 is a straight arm, and both ends of the connecting arm 220 are rotatably connected to the two curved arms 210 respectively, or one end is rotatably connected to the curved arm 210 and the other end is fixedly connected to the other curved arm 210 .

[0062] Specifically, the structure of the connecting arm 220 is similar to a rectangular plate, and a circular ring is provided at both ends of the plate, which is fixedly connected to the output end of the bending arm motor 212 and drives the connecting arm 220 to rotate relative to the bending arm 210. Specifically, both ends of the connecting arm 220 of the first bending arm group 200 are respectively rotatably connected to the two bending arms 210, and one end of the connecting arm 220 of the second bending arm group 200 is rotatably connected to the bending arm 210 and the other end is fixedly connected to the other bending arm 210. The bending arm 210 above the second bending arm group 200 is fixedly connected to the connecting arm 220, and can be regarded as a whole in the shape of an "AND".

[0063] Specifically, the connecting arm 220 also includes a connecting arm end cover 221, and the connecting arm end cover 221 is fixedly connected to the connecting arm 220 to form a wiring channel, which is more beautiful and convenient for maintenance, installation and disassembly.

[0064] like Figure 2 As shown, in this embodiment, the multi-axis robot arm further includes an adapter 300, which is installed on the bending arm 210 of the bending arm group 200 away from the base mechanism 100, and is used for switching the operating device.

[0065] Specifically, one end of the adapter 300 is fixedly connected to the bending arm 210 at the end of the bending arm group 200, and the other end is fixedly connected to the operating device. The operating device is driven by the bending arm group 200 to realize multi-axis free movement. The operating device can be understood as a specific execution tool, such as a manipulator, an electric screwdriver, an electric welder and other devices. The device that completes the corresponding task can be replaced according to different actual uses.

[0066] like Figure 6 As shown, in this embodiment, a zero position scale mark is engraved on the base housing 110, and a zero position scale mark is also engraved on the corresponding bent arm housing 211 and aligned with the zero position scale mark of the base housing 110. When the bent arm 210 rotates relative to the base mechanism 100, it is convenient to locate the zero point during the debugging of the robot arm, and it is convenient for debugging and use. Optionally, other joint positions are also designed with zero position scale marks, such as between the bent arms 210 and the bent arms 210, between the bent arm 210 and the connecting arm 220, and between the bent arm 210 and the adapter 300.

[0067] like Figure 7and Figure 8 As shown, in this embodiment, the multi-axis robotic arm also includes a connecting member 400, which is a circular ring. The bottom of the connecting member 400 is fixedly connected to the output end of the base motor 120, and the side of the connecting member 400 is fixedly connected to one end of the bending arm shell 211.

[0068] In this embodiment, the connecting member 400 and the arm housing 211 are fixedly connected radially by fasteners, and the arm housing 211 is provided with a plurality of fastener mounting holes 2114 for fasteners to pass through, and the arm housing 211 is also provided with a groove 2115, and the fastener mounting holes 2114 are arranged at the bottom of the groove 2115. The multi-axis robot arm further comprises a decorative member 500, which is installed in the groove 2115 to cover the fastener mounting holes 2114. The decorative member 500 also seals the connection and reduces noise. The diameter of the decorative member 500 is the same as that of the arm housing 211, and the joint is flush and smooth after installation, which does not affect the appearance.

[0069] Specifically, the connecting member 400 is fixedly connected to the output end of the base motor 120 by fasteners in the axial direction, and is fixedly connected to the bent arm housing 211 by fasteners in the radial direction, and is used to fix the bent arm housing 211 to the output end of the base motor 120, so that the bent arm housing 211 rotates together with the output end of the base motor 120, thereby realizing the relative rotation of the bent arm 210 relative to the base mechanism 100. Optionally, the connecting member 400 can also be used between the output end of the bent arm motor 212 and the connecting arm 220, between the bent arm motor 212 and the bent arm housing 211, and between the bent arm motor 212 and the adapter 300.

[0070] Specifically, the fastener installation holes 2114 for installing the bending arm housing 211 and the connecting piece 400 are located on the outer side of the bending arm housing 211, with a large operating space, which is convenient for the installation and removal of each bending arm 210. The fastener installation holes 2114 are distributed along a circle of the bending arm housing 211, and the groove 2115 is an annular groove. The groove 2115 fits with the decorative piece 500 to cover the installation hole position, beautifying the appearance of the robot arm. Optionally, other joint positions are also designed with the same connection structure as the connecting piece 400, such as between bending arms 210 and bending arms 210, between bending arms 210 and connecting arms 220, and between bending arms 210 and adapters 300.

[0071] Specifically, Fig. 9 As shown, a baffle portion is also provided at the bottom of the connecting member 400, and the baffle portion is a circle of baffle extending along the axial direction. When the connecting member 400 is fixedly connected to the output end of the base motor 120, the baffle portion is inserted into the gap between the base motor 120 and the base shell 110, which is used to reduce wear and tear and prevent dust and water.

[0072] like Fig. 9 and Fig.10 As shown, in this embodiment, a first boss 111 is provided on one side end face of the base shell 110 facing the connecting member 400, and a second boss 410 is correspondingly provided at the bottom of the connecting member 400. When the connecting member 400 rotates to a preset angle along with the output end of the base motor 120, the first boss 111 abuts against the second boss 410 to achieve limiting.

[0073] Specifically, a third boss may be provided next to the second boss 410. When the connector 400 rotates, the second boss 410 rotates at an angle defined between the first boss 111 and the third boss. The first boss 111 and the third boss limit the second boss 410 from two directions.

[0074] Specifically, Figure 6 As shown, the second boss 410 also has a positioning function. When the first boss 111 abuts against the second boss 410, it can be considered that it has rotated to the zero position.

[0075] like Figure 2 As shown, in this embodiment, for ease of understanding, the base motor 120 and the five arm motors 212 are named as the first motor, the second motor, the third motor, the fourth motor, the fifth motor, and the sixth motor from bottom to top. Among them, the rotation axis of the first motor is perpendicular to the mounting surface of the base mechanism 100, the rotation axis of the second motor is perpendicular to and intersects with the rotation axis of the first motor, the rotation axis of the third motor is parallel to the rotation axis of the second motor, the rotation axis of the fourth motor is perpendicular to and intersects with the rotation axis of the third motor, the rotation axis of the fifth motor is perpendicular to and intersects with the rotation axis of the fourth motor, and the rotation axis of the sixth motor is perpendicular to and intersects with the rotation axis of the fifth motor. And the rotation axes of the first, fourth, and sixth motors are located in the same plane.

[0076] To sum up, the multi-axis robotic arm with a simple structure and easy installation of the present invention forms a bending arm group 200 by combining an "L"-shaped bending arm 210 and a connecting arm 220. One bending arm group 200 can realize the movement of multiple joints. The structural arrangement of multiple bending arm groups 200 is conducive to the calculation of the multi-axis robotic arm control algorithm, and the components of the bending arm group 200 are efficiently installed and compactly structured for easy wiring and debugging.

[0077] Optionally, the bending arm 210 further includes an inspection cover 213. An inspection port 2111 is provided on the bending arm housing 211. The inspection cover 213 is detachably mounted on the inspection port 2111. This facilitates installation and debugging of the bending arm motor 212 and internal wiring.

[0078] Optionally, the base housing 110, the curved arm 210 and the connecting arm 220 are all provided with interconnected wiring channels, and the base motor 120 and the curved arm motor 212 are both arranged in the wiring channels. The power supply line, signal line, control line and other lines of each motor can be arranged in the wiring channel, and multiple motors can be connected in series or in parallel to achieve better circuit control.

[0079] Optionally, the base shell 110 is provided with a first boss 111 on one side end surface facing the connecting member 400, and the bottom of the connecting member 400 is correspondingly provided with a second boss 410. The first boss 111 cooperates with the second boss 410 to realize the angle limiting function of the bending arm 210. Each boss is hidden and built into the bending arm shell 211 or the base shell 110, which can improve the safety of the multi-axis robot arm when in use without affecting the appearance. Moreover, the design of the first boss 111 and the second boss 410 can also be applied between the bending arm 210 and the connecting arm 220 or between two bending arms 210, and has strong versatility.

[0080] The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. A multi-axis robotic arm with simple structure and convenient installation, characterized in that: It includes a base mechanism and at least one set of bending arm groups, wherein the base mechanism includes a base shell and a base motor fixedly arranged therein, and the bending arm group includes two bending arms and a connecting arm; The bent arm is "L"-shaped, and the two ends of the connecting arm are respectively connected to the two bent arms. One end of at least one bent arm away from the connecting arm is fixedly connected to the output end of the base motor and rotates therewith; the bent arms of adjacent bent arm groups are rotationally connected and multiple groups of bent arm groups are connected in series.

2. The multi-axis robot arm with simple structure and convenient installation as claimed in claim 1 is characterized in that: The bending arm includes a bending arm shell and a bending arm motor. The bending arm shell is an "L"-shaped bending pipe. The bending arm motor is fixedly arranged at one end of the bending arm shell. The output end of the bending arm motor is arranged to face the outside of the bending arm shell.

3. The multi-axis robotic arm with simple structure and convenient installation as claimed in claim 2 is characterized in that: The bending arm includes two bending arm motors, which are respectively fixedly arranged at two ends of the bending arm housing, and the output ends of the bending arm motors are both arranged to face outside the bending arm housing.

4. The multi-axis robotic arm with simple structure and convenient installation as claimed in claim 2 is characterized in that: The bending arm also includes an inspection cover. An inspection opening is opened on the bending arm housing. The inspection opening faces the side of the bending arm motor that is away from the output end. The inspection cover is detachably mounted on the inspection opening.

5. The multi-axis robot arm with simple structure and convenient installation as claimed in claim 2 is characterized in that: The base shell, the bent arm and the connecting arm are all provided with interconnected wiring channels, and the base motor and the bent arm motor are both arranged in the wiring channels.

6. The multi-axis robot arm with simple structure and convenient installation as claimed in claim 1 is characterized in that: The connecting arm is a straight arm, and both ends of the connecting arm are rotatably connected to the two curved arms respectively, or one end is rotatably connected to the curved arm and the other end is fixedly connected to the other curved arm.

7. The multi-axis robot arm with simple structure and convenient installation as claimed in claim 1 is characterized in that: The multi-axis robot arm also includes a switching component, which is installed on the bending arm of the bending arm group away from the base mechanism and is used for switching the operating device.

8. The multi-axis robot arm with simple structure and convenient installation as claimed in claim 1, characterized in that: The multi-axis robotic arm also includes a connecting piece, which is a circular ring. The bottom of the connecting piece is fixedly connected to the output end of the base motor, and the side of the connecting piece is fixedly connected to one end of the bending arm shell.

9. The multi-axis robot arm with simple structure and convenient installation as claimed in claim 8, characterized in that: The connecting piece and the bending arm shell are fixedly connected radially by fasteners. The bending arm shell is provided with a plurality of fastener mounting holes for fasteners to pass through. The bending arm shell is also provided with a groove. The fastener mounting holes are arranged at the bottom of the groove. The multi-axis robotic arm also includes a decorative piece, which is installed in the groove to cover the fastener mounting holes.

10. The multi-axis robot arm with simple structure and convenient installation as claimed in claim 8, characterized in that: A first boss is arranged on one end face of the base shell facing the connecting member, and a second boss is correspondingly arranged on the bottom of the connecting member. When the connecting member rotates to a preset angle along with the output end of the base motor, the first boss abuts against the second boss to achieve position limiting.

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