Sectional material for mechanical arm and mold for manufacturing sectional material

Abstract

The utility model discloses a sectional material for a mechanical arm and a mold for manufacturing the sectional material, and relates to the technical field of mechanical arms. The sectional material comprises an outer barrel and an inner barrel, the outer barrel and the inner barrel each comprise a plurality of reinforcing ribs and a plurality of reinforcing rib plates, the reinforcing ribs are evenly distributed along the circumference, the reinforcing rib plates are connected between every two adjacent reinforcing ribs, the inner barrel and the outer barrel are coaxially arranged, and a plurality of connecting rib plates are arranged between the inner barrel and the outer barrel. The connecting rib plates are arranged in the radial direction of the outer cylinder body and the inner cylinder body, and the section bars are formed by aluminum alloy in an extrusion mode. The sectional material for the mechanical arm is low in cost, high in structural strength and high in structural stability, the mechanical arm of a palletizing robot is manufactured through the sectional material, the requirements of the robot for the strength and the stability of the mechanical arm can be met, and meanwhile the manufacturing cost and the maintenance cost of the palletizing robot can be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical arm technical field more specifically, relate to a section bar for mechanical arm and the mould of manufacturing the section bar. BACKGROUND

[0002] With the rapid development of society, automation technology is widely used in various fields, and a large number of automation equipment gradually replaces manual operation.In the work scene such as grabbing, stacking, mechanical arm becomes the mainstream choice by virtue of its efficient and accurate characteristics.At present, most of the mechanical arms are made of carbon fiber material to meet the stringent requirements of strength, however, this also leads to high cost.

[0003] At the same time, there is also a mechanical arm made of aluminum alloy material in the prior art.However, this kind of aluminum alloy mechanical arm has obvious disadvantages, its strength is low, it is difficult to meet the high standard demand of the strength of the mechanical arm of the stacking robot, which limits its wide application in related scenes.The stacking work often needs the mechanical arm to frequently grab and carry heavy objects, under this high strength operation, the aluminum alloy material mechanical arm not only easy to wear and deformation, but also may cause safety hazards due to insufficient strength, such as loose parts, mechanical arm fracture, etc., which seriously affects the production efficiency and work safety.In addition, with the continuous improvement of the requirements of the industry on the stacking efficiency and accuracy, higher requirements on the strength and stability of the mechanical arm are put forward, and the existing aluminum alloy material mechanical arm is increasingly unable to meet the requirements in this aspect. UTILITARIAN CONTENT

[0004] In order to overcome the defects and deficiencies existing in the prior art, the utility model provides a section bar for mechanical arm and a mould for manufacturing the section bar, one of the purposes of the utility model is to provide a section bar for mechanical arm made of aluminum alloy, which can reduce the material cost, and the structural strength and stability of the section bar itself can meet the requirements of the strength and stability of the mechanical arm, the second purpose of the utility model is to provide a mould for manufacturing a section bar that meets the requirements of the strength and stability of the mechanical arm.The section bar for mechanical arm provided by the utility model has low cost, high structural strength and high structural stability, and the mechanical arm of the stacking robot manufactured by using the section bar provided by the utility model can meet the requirements of the strength and stability of the robot, and can also reduce the manufacturing cost and maintenance cost of the stacking robot.

[0005] In order to solve the problems existing in the prior art, the utility model is realized by the following technical scheme.

[0006] The utility model discloses a first aspect provides a kind of sectional material for mechanical arm, including outer cylinder and inner cylinder, the outer cylinder includes several outer reinforcing rib and several outer reinforcing rib plate, several outer reinforcing rib is evenly distributed along circumference, and outer reinforcing rib plate is connected between adjacent two outer reinforcing ribs;The inner cylinder includes several inner reinforcing rib and several inner reinforcing rib plate, several inner reinforcing rib is evenly distributed along circumference, and inner reinforcing rib plate is connected between adjacent two inner reinforcing ribs;Inner cylinder and outer cylinder coaxial arrangement are provided, and several connecting rib plates are arranged between inner cylinder and outer cylinder, and connecting rib plate is arranged along the radial direction of outer cylinder and inner cylinder, and one end of connecting rib plate is connected on inner reinforcing rib, and the other end of connecting rib plate is connected on outer reinforcing rib;The sectional material is formed by extrusion using aluminum alloy.

[0007] Further preferably, the number of outer reinforcing ribs is the same as the number of inner reinforcing ribs, and the size of inner reinforcing rib plate is smaller than the size of outer reinforcing rib plate.

[0008] More preferably, the connecting rib plate is arranged between the outer reinforcing rib and the inner reinforcing rib, and the number of connecting rib plates corresponds to the number of outer reinforcing ribs and inner reinforcing ribs.

[0009] More preferably, the cross section of outer reinforcing rib and inner reinforcing rib is circular or elliptical.

[0010] More preferably, the connecting part of connecting rib plate and outer reinforcing rib and the connecting part of connecting rib plate and inner reinforcing rib are circular arc transitions.

[0011] More preferably, the connecting part of outer reinforcing rib plate and outer reinforcing rib is circular arc transition, and the connecting part of inner reinforcing rib plate and inner reinforcing rib is circular arc transition.

[0012] The utility model discloses a second aspect provides a kind of mould of sectional material described in the first aspect, the mould includes mould body, the first extrusion hole in the mould body is set up several along first circumference evenly distributed, and second extrusion hole along second circumference evenly distributed, first circumference and second circumference are concentric, and the radius of second circumference is smaller than the radius of first circumference, and the first connecting port is communicated between adjacent two first extrusion holes, and the second connecting port is communicated between adjacent two second extrusion holes;Several third connecting ports are evenly distributed between first circumference and second circumference, and the third connecting port is arranged along the radial direction of first circumference and second circumference, and one end of third connecting port is communicated with the first extrusion hole on first circumference, and the other end of third connecting port is communicated with the second extrusion hole on second circumference.

[0013] Further preferably, the first extrusion hole and the second extrusion hole are circular or elliptical.

[0014] More preferably, the number of first extrusion holes is the same as the number of second extrusion holes.

[0015] Further preferably, the first extrusion hole and the second extrusion hole are aligned in a radial direction, and the first extrusion hole and the second extrusion hole are communicated through the third connecting port.

[0016] Compared with the prior art, the utility model has the beneficial technical effects that:

[0017] 1、In the utility model, the section bar is mainly composed of an outer cylinder and an inner cylinder. The outer cylinder part contains a plurality of outer reinforcing ribs and a plurality of outer reinforcing rib plates. These outer reinforcing ribs are evenly distributed along the circumferential direction, and the outer reinforcing rib plates are connected between adjacent two outer reinforcing ribs. This design can effectively enhance the structural strength and stability of the outer cylinder. The inner cylinder also contains a plurality of inner reinforcing ribs and a plurality of inner reinforcing rib plates. The inner reinforcing ribs are also evenly distributed along the circumference, and the inner reinforcing rib plates are connected between adjacent inner reinforcing ribs, further strengthening the structure of the inner cylinder. The inner cylinder and the outer cylinder are coaxially arranged, and a plurality of connecting rib plates are arranged between the inner cylinder and the outer cylinder. These connecting rib plates are distributed along the radial direction of the outer cylinder and the inner cylinder, one end of which is connected to the inner reinforcing rib, and the other end is connected to the outer reinforcing rib. Through this structural design, the inner cylinder and the outer cylinder are stably connected, further improving the strength and rigidity of the overall section bar. The section bar is manufactured by an aluminum alloy extrusion forming process. This process helps to optimize the production cost and production efficiency while ensuring the strength of the section bar.

[0018] 2、In the utility model, the number of outer reinforcing ribs is the same as the number of inner reinforcing ribs, and the size of the inner reinforcing rib plate is smaller than the size of the outer reinforcing rib plate. This design makes the section bar have a certain symmetry in the inner and outer structures, which is beneficial to the uniform transmission and distribution of force, and ensures that the inner and outer cylinders can work together to bear external force under complex stress conditions. The inner reinforcing rib plate is relatively small in size, which can reduce the overall weight while ensuring the structural strength of the inner cylinder, meeting the demand of lightweight for mechanical arms.

[0019] 3、In the utility model, the cross section of the outer reinforcing rib and the inner reinforcing rib is circular or elliptical. Compared with other shapes, the circular or elliptical cross section can provide better bending and torsional resistance under the same material consumption, enhance the strength and stability of the reinforcing rib itself, and further improve the mechanical properties of the entire section bar, making it more suitable for mechanical arms to bear larger stress in grabbing, stacking and other work.

[0020] 4、The utility model discloses, the connecting place of connecting rib plate and outer reinforcing rib and the connecting place of connecting rib plate and inner reinforcing rib are arc transition, the connecting place of outer reinforcing rib plate and outer reinforcing rib is arc transition, and the connecting place of inner reinforcing rib plate and inner reinforcing rib is also arc transition. The design of arc transition can effectively reduce stress concentration phenomenon, avoid the crack or fracture of appearing at the connecting place because of stress too big and so on, improve the service life and reliability of section bar, ensure the safety of mechanical arm under long -term high -intensity work.

[0021] 5、The utility model discloses a mould for producing the section bar, wherein a plurality of first extrusion holes uniformly distributed along a first circumference and a plurality of second extrusion holes uniformly distributed along a second circumference are formed on the mould body, the first circumference is concentric with the second circumference, and the radius of the second circumference is smaller than the radius of the first circumference, two adjacent first extrusion holes are connected by a first connecting port, two adjacent second extrusion holes are connected by a second connecting port, a plurality of third connecting ports are uniformly distributed along the radial direction between the first circumference and the second circumference, and the two ends of the third connecting ports are connected with the extrusion holes on the first and second circumferences respectively. This layout design can accurately control the flow of aluminum alloy during extrusion, ensure that the section bar has uniform wall thickness and accurate structure shape after forming, and ensure the quality stability and dimensional accuracy of the section bar.

[0022] 6、The first extrusion hole and the second extrusion hole are circular or elliptical. This matches the circular or elliptical cross-sectional shape of the reinforcing rib in the section bar, which is beneficial to the smooth filling of aluminum alloy material to each part of the mould during extrusion forming, forming the reinforcing rib with the required shape, and ensuring the forming quality and mechanical properties of the reinforcing rib.

[0023] 7、The number of first extrusion holes is the same as that of second extrusion holes, and the first extrusion holes and the second extrusion holes are aligned in the radial direction and connected by the third connecting ports. This design allows the aluminum alloy material to flow uniformly from the inside to the outside during extrusion, ensuring that the number of inner and outer reinforcing ribs is consistent and the positions correspond, thereby ensuring the symmetry and uniformity of the inner and outer structures of the section bar after forming, and improving the mechanical properties and quality stability of the section bar as a whole. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is the perspective view of the section bar for the utility model mechanical arm;

[0025] Figure 2 It is the front view of the section bar for the utility model mechanical arm;

[0026] Figure 3 It is the cross-sectional view of the section bar for the utility model mechanical arm Figure 1 ;

[0027] Figure 4This is a schematic cross-section of the profile used in the robotic arm of this utility model. Figure 2 ;

[0028] Figure 5 For manufacturing Figure 3 The mold for the profile with the cross-sectional structure shown;

[0029] Figure 6 For manufacturing Figure 4 Mold 2 for the profile with the cross-sectional structure shown;

[0030] Reference numerals: 1. Outer cylinder, 2. Inner cylinder, 3. Outer reinforcing rib, 4. Outer reinforcing rib plate, 5. Inner reinforcing rib, 6. Inner reinforcing rib plate, 7. Connecting rib plate, 8. Mold body, 9. First extrusion hole, 10. Second extrusion hole, 11. First connecting port, 12. Second connecting port, 13. Third connecting port. Detailed Implementation

[0031] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0032] Example 1

[0033] As a preferred embodiment of this utility model, please refer to the appendix to the specification. Figure 1 Appendix Figure 2 Appendix Figure 3 and attached Figure 4 As shown in the figure, this embodiment discloses a profile for a robotic arm, which is composed of an outer cylinder 1 and an inner cylinder 2, and is intended to provide a high-strength and high-stability structural support component for the robotic arm.

[0034] Specifically, the outer cylinder 1 includes several outer reinforcing ribs 3 and several outer reinforcing rib plates 4. These outer reinforcing ribs 3 are evenly distributed in the circumferential direction, forming a stable ring-shaped support structure. The outer reinforcing rib plates 4 are cleverly connected between adjacent outer reinforcing ribs 3. As an important component of the outer cylinder 1 structure, the outer reinforcing rib plates 4 and outer reinforcing ribs 3 work together to provide strong support and resistance to deformation for the outer cylinder 1, enabling it to withstand various external forces.

[0035] The inner cylinder 2 part also contains a plurality of inner reinforcing ribs 5 and a plurality of inner reinforcing rib plates 6. Among them, the inner reinforcing ribs 5 are uniformly distributed along the circumference to form an inner annular support structure corresponding to the outer cylinder 1. The inner reinforcing rib plate 6 tightly connects the adjacent two inner reinforcing ribs 5, further enhancing the structural strength of the inner cylinder 2, and providing a strong guarantee for the stability of the inner cylinder 2.

[0036] The design between the inner cylinder 2 and the outer cylinder 1 is particularly ingenious. They are coaxially arranged to ensure the symmetry and balance of the entire profile structure. Between them, a plurality of connecting rib plates 7 are arranged along the radial direction of the outer cylinder 1 and the inner cylinder 2. One end of the connecting rib plate 7 is firmly connected to the inner reinforcing rib 5, and the other end is accurately connected to the outer reinforcing rib 3, which organically combines the inner cylinder 2 and the outer cylinder 1 to form a whole structure that works together, greatly enhancing the overall rigidity and carrying capacity of the profile.

[0037] It is worth mentioning that the profile is made of aluminum alloy by extrusion molding process. Through the extrusion molding process, the shape and size of the profile can be accurately controlled. At the same time, the use of aluminum alloy material makes the profile have the advantages of light weight, corrosion resistance and the like under the premise of ensuring strength, which is very suitable for the use requirements of the mechanical arm under different working conditions.

[0038] As an example, referring to the drawings attached to the specification Figure 3 The connecting rib plate 7 is arranged between the outer reinforcing rib 3 and the inner reinforcing rib 5, and the Figure 3 The connecting rib plate 7 is arranged between the outer reinforcing rib 3 and the inner reinforcing rib 5, and the

[0039] As an example of this embodiment, the size of the profile can be controlled according to the actual use condition, by controlling the size of the outer reinforcing rib 3, the size of the inner reinforcing rib 5, and the size of the outer reinforcing rib plate 4 and the size of the inner reinforcing rib plate 6.

[0040] Embodiment 2

[0041] As another preferred embodiment of the present application, this embodiment is a further detailed supplement and elaboration of the technical solution of the present application based on the above-mentioned embodiment 1. In this embodiment, referring to the drawings attached to the specification Figure 4 As shown in the drawings, the number of the outer reinforcing ribs 3 is the same as the number of the inner reinforcing ribs 5. This same number design ensures the coordination of the inner and outer cylinders 1 in structure and the balance of the stress distribution, so that the inner and outer cylinders 1 can work together when bearing external force, avoiding local damage or deformation caused by uneven stress.

[0042] The size of the inner reinforcing rib plate 6 is smaller than the size of the outer reinforcing rib plate 4, which aims to realize a differentiated structural optimization. The relatively small size of the inner reinforcing rib plate 6 can reduce the weight of part of the inner cylinder 2 while ensuring that the inner cylinder 2 has sufficient strength, which helps to realize the lightweight of the profile as a whole and meets the requirement of low self-weight of the mechanical arm in the movement process. The relatively large size of the outer reinforcing rib plate 4 provides stronger support and protection for the outer cylinder 1, so that it can better withstand the impact and pressure from the external environment.

[0043] The connecting rib plates 7 are arranged between the outer reinforcing ribs 3 and the inner reinforcing ribs 5, and the number of the connecting rib plates 7 corresponds to the number of the outer reinforcing ribs 3 and the inner reinforcing ribs 5. Such a design can ensure that each outer reinforcing rib 3 and inner reinforcing rib 5 can be reliably connected through the connecting rib plate 7 to form a dense and stable meshed connection structure. This not only greatly enhances the connection strength between the inner cylinder 2 and the outer cylinder 1, but also enables the force to be more evenly transmitted between the inner and outer cylinders 1, thereby improving the mechanical properties of the entire profile. When the mechanical arm performs operations such as grabbing and stacking, the tight and uniform connection structure can effectively disperse stress and reduce local stress concentration, thereby prolonging the service life of the profile for the mechanical arm and improving the working reliability and stability of the mechanical arm.

[0044] Further, in actual use, through the simulation of stress analysis under different working conditions, it can be found that the profile structure of the embodiment can significantly reduce the deformation amount compared with the traditional single cylinder structure or the profile structure with loose connection when bearing the same size of external load, which provides a more solid structural basis for the precise operation of the mechanical arm. At the same time, this structural design also has good scalability. When the mechanical arm needs to be upgraded or the load capacity needs to be increased, the thickness or size of the outer reinforcing rib plate 4, the inner reinforcing rib plate 6 and the connecting rib plate 7 can be adjusted according to the actual situation without the need for large-scale modification of the overall structure, which shows high flexibility and adaptability.

[0045] Embodiment 3

[0046] As another preferable embodiment of the present application, the embodiment is a further detailed supplement and elaboration of the technical solution of the present application based on the above-mentioned embodiment 1 or embodiment 2.

[0047] As an implementation manner of the embodiment, referring to the drawings Figure 3 and the drawings Figure 4As shown, the cross-sections of the outer stiffener 3 and the inner stiffener 5 are circular or elliptical. The circular or elliptical cross-section design gives the outer stiffener 3 and the inner stiffener 5 unique mechanical performance advantages. Compared with other cross-section shapes, the circular or elliptical shape can better withstand loads from all directions, especially when the robot arm frequently performs complex movements and is subjected to stress, its uniform stress distribution characteristics can effectively prevent stress concentration, thereby significantly enhancing the structural strength and stability of the stiffener itself. This design not only improves the load-carrying capacity of the robot arm during normal operation, but also better resists deformation when subjected to accidental impact or eccentric load, ensuring the overall performance and safety of the robot arm.

[0048] As another embodiment of the present embodiment, the connection between the connecting rib plate 7 and the outer stiffener 3 and the connection between the connecting rib plate 7 and the inner stiffener 5 are circular arc transitions. This design is to achieve a more smooth force transmission path and avoid stress concentration "hot spots" at the connection. When the robot arm is working, forces are transmitted and distributed between different components. The use of a circular arc transition at the connecting point of the connecting rib plate 7 and the stiffener can make the force transmission smoother, like water flowing around a smooth stone, reducing stress concentration caused by shape changes, greatly reducing the risk of fatigue cracks or fractures at these key connection points, prolonging the service life of the profile for robot arm, and also improving its reliability in long-term use.

[0049] As another embodiment of the present embodiment, the connection between the outer stiffener plate 4 and the outer stiffener 3 is a circular arc transition, and the connection between the inner stiffener plate 6 and the inner stiffener 5 is a circular arc transition. Such detail processing is also based on the consideration of reducing stress concentration. The circular arc transition makes the connection between the stiffener plate and the stiffener smoother and more secure, further improving the integrity and reliability of the entire profile structure. In actual operation, the robot arm may be subjected to various complex dynamic loads. This circular arc transition connection method can make the entire structure work better in cooperation, ensuring stable mechanical properties under various working conditions, and providing a more solid guarantee for the stable operation of the robot arm.

[0050] It should be noted that the embodiments in the present embodiment can be combined with each other, and any one or more embodiments of the present embodiment can be combined with the schemes of Embodiment 1 or Embodiment 2. This combination provides great flexibility for the design of the profile for robot arm. Different embodiments can be flexibly selected and combined according to different use requirements and performance requirements of the robot arm to achieve the most optimized structural performance. For example, for a robot arm that needs to withstand a large lateral force, the circular or elliptical cross-section of the outer stiffener 3 and the inner stiffener 5 can be combined with the circular arc transition connection method at various places, so that the profile for robot arm has higher toughness and fatigue resistance while ensuring strength, and adapts to more severe working environments.

[0051] Embodiment 4

[0052] As another preferable embodiment of the utility model, the embodiment provides a mold for manufacturing the profile in the above-mentioned embodiment 1, embodiment 2 or embodiment 3, referring to the structure of the mold and its unique advantages in the profile manufacturing process. Figure 5 And as shown in the accompanying drawings, Figure 6 The embodiment will be described in detail.

[0053] The embodiment discloses a mold for manufacturing the profile in the above-mentioned embodiment 1-3, and the core component of the mold is a mold body 8. A plurality of first extrusion holes 9 distributed uniformly along a first circumference and a plurality of second extrusion holes 10 distributed uniformly along a second circumference are carefully arranged on the mold body 8. The first circumference is concentric with the second circumference, and the radius of the second circumference is smaller than that of the first circumference. The concentric and different radius design is to accurately control the inner and outer structure forming of the profile.

[0054] Specifically, the first extrusion holes 9 are communicated through the first connecting port 11 between the adjacent two first extrusion holes 9. This design can ensure that the material can flow smoothly between the first extrusion holes 9 on the first circumference during the extrusion forming process of the aluminum alloy material, and form a uniform distribution state, so as to avoid local material accumulation or loss, thereby ensuring that the outer cylinder body 1 part of the finally formed profile has uniform and consistent quality and shape, and providing a stable material supply channel for the forming of the outer reinforcing rib 3 and the outer reinforcing rib plate 4.

[0055] Meanwhile, the second extrusion holes 10 are communicated through the second connecting port 12 between the adjacent two second extrusion holes 10. This structure ensures that the material required during the forming process of the inner cylinder body 2 can be uniformly distributed, so that the inner reinforcing rib 5 and the inner reinforcing rib plate 6 have good material supply during the forming process, and avoid the structural defects of the inner cylinder body 2 caused by uneven material distribution.

[0056] In addition, a plurality of third connecting ports 13 are uniformly distributed between the first circumference and the second circumference. The third connecting ports 13 are arranged along the radial direction of the first circumference and the second circumference, and one end of the third connecting ports 13 is communicated with the first extrusion hole 9 on the first circumference, and the other end is communicated with the second extrusion hole 10 on the second circumference. Through this ingenious radial arrangement, the aluminum alloy material can flow orderly from the first extrusion hole 9 to the second extrusion hole 10 through the third connecting port 13 during the extrusion process, realizing the material transfer from the outside to the inside, and providing a strong guarantee for the forming of the connecting rib plate 7. This layout ensures that the connecting rib plate 7 between the inner and outer cylinder bodies 1 can form a stable and continuous connection with the inner and outer reinforcing ribs 3 and the reinforcing rib plate during the extrusion process, so that the finally formed profile has a compact overall structure and a firm connection.

[0057] This mold's structural layout, through its rationally designed connection ports and extrusion holes, allows for precise control of the aluminum alloy material's flow path and distribution. This ensures the manufactured profiles possess high-quality, high-precision structural characteristics, effectively meeting the structural integrity and stability requirements of robotic arm profiles. In practical applications, using this mold can significantly improve profile forming quality and production efficiency, reduce scrap rates, and provide a reliable mold solution for the large-scale production of robotic arm profiles.

[0058] Example 5

[0059] As another preferred embodiment of the present invention, this embodiment is a further detailed supplement and explanation of the technical solution of the present invention based on the above embodiment 4.

[0060] In one embodiment of this invention, the first extrusion hole 9 and the second extrusion hole 10 are circular or elliptical. This shape design is significant because it matches the shape of the reinforcing ribs and reinforcing rib plates of the robotic arm profiles mentioned in Embodiments 1 to 3. Circular or elliptical extrusion holes can better guide the flow of aluminum alloy material, forming a structure of the corresponding shape, thereby ensuring that the produced profile has superior mechanical properties. Due to the good structural stability of circular or elliptical shapes, the material flows more smoothly within these shaped extrusion holes when compressed, helping to avoid stress concentration caused by irregular shapes. This, in turn, ensures that the final formed profile has better resistance to compression, bending, and torsion during use, improving the overall performance of the robotic arm.

[0061] In another embodiment of this invention, the number of the first extrusion holes 9 is the same as the number of the second extrusion holes 10. This design ensures the correspondence and symmetry of the inner and outer structures of the mold during profile production, enabling the inner cylinder 2 and outer cylinder 1 to achieve uniform growth during the molding process, thereby ensuring the structural stability and reliability of the final product. Further preferably, refer to the appendix to the specification. Figure 6 As shown, the first extrusion hole 9 and the second extrusion hole 10 are aligned radially, and both are connected by a third connecting port 13. This alignment and connection ensures that during the extrusion process, the aluminum alloy material can be transferred from the outer cylinder 1 to the inner cylinder 2 in an orderly and symmetrical manner, achieving a perfect connection between the inner and outer cylinders 1. This provides a stable material supply for the connecting stiffener 7, thereby ensuring the quality of the connecting stiffener 7 and the overall structural integrity of the profile. This method is particularly suitable for processing large-diameter profiles, ensuring the structural strength, rigidity, and stability of the profile.

[0062] As another embodiment of this invention, please refer to the appendix to the specification. Figure 5As shown, a set of first extrusion holes 9 and second extrusion holes 10 are arranged between adjacent third connecting ports 13. The die structure has unique advantages, and is particularly suitable for processing small-diameter profiles. Through this unique arrangement, the material cost can be ingeniously reduced while ensuring the strength of the profile. In actual production, this arrangement can make more rational use of aluminum alloy materials under the premise of meeting the strength requirements of the mechanical arm on the profile, avoiding unnecessary material waste. For example, in some application scenarios with strict requirements on the overall size and weight of the mechanical arm, through reasonable arrangement, the weight of the profile can be reduced, the utilization rate of the material can be improved, and through optimization of the material distribution, defects that may occur in the use process of the profile are reduced, ensuring that the small-diameter profile can stably and reliably play a role under various working conditions.

[0063] Although the inventive concept has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application as defined by the appended claims.

Claims

1. A profile for a robot arm, characterized by: The outer cylinder (1) comprises a plurality of outer reinforcing ribs (3) and a plurality of outer reinforcing rib plates (4), the plurality of outer reinforcing ribs (3) are uniformly distributed along the circumference, and the outer reinforcing rib plate (4) is connected between the adjacent two outer reinforcing ribs (3); the inner cylinder (2) comprises a plurality of inner reinforcing ribs (5) and a plurality of inner reinforcing rib plates (6), the plurality of inner reinforcing ribs (5) are uniformly distributed along the circumference, and the inner reinforcing rib plate (6) is connected between the adjacent two inner reinforcing ribs (5); the inner cylinder (2) and the outer cylinder (1) are coaxially arranged, a plurality of connecting rib plates (7) are arranged between the inner cylinder (2) and the outer cylinder (1), the connecting rib plate (7) is arranged along the radial direction of the outer cylinder (1) and the inner cylinder (2), one end of the connecting rib plate (7) is connected to the inner reinforcing rib (5), and the other end of the connecting rib plate (7) is connected to the outer reinforcing rib (3); the profile is formed by extrusion of aluminum alloy.

2. A profile for a robot arm as claimed in claim 1, characterized in that: The number of the outer reinforcing ribs (3) is the same as that of the inner reinforcing ribs (5), and the size of the inner reinforcing rib plate (6) is smaller than that of the outer reinforcing rib plate (4).

3. A profile for a robot arm as claimed in claim 2, characterized in that: The connecting rib plate (7) is arranged between the outer reinforcing rib (3) and the inner reinforcing rib (5), and the number of the connecting rib plate (7) corresponds to that of the outer reinforcing rib (3) and the inner reinforcing rib (5).

4. A profile for a robot arm according to any one of claims 1-3, characterized in that: The cross section of the outer reinforcing rib (3) and the inner reinforcing rib (5) is circular or elliptical.

5. A profile for a robot arm according to any one of claims 1-3, characterized in that: The connecting part of the connecting rib plate (7) and the outer reinforcing rib (3) and the connecting part of the connecting rib plate (7) and the inner reinforcing rib (5) are circular arc transitions.

6. A profile for a robot arm according to any one of claims 1-3, characterized in that: The connecting part of the outer reinforcing rib plate (4) and the outer reinforcing rib (3) is a circular arc transition, and the connecting part of the inner reinforcing rib plate (6) and the inner reinforcing rib (5) is a circular arc transition.

7. A mold for manufacturing the profile for a robot arm according to any one of claims 1 to 6, characterized in that: The mold comprises a mold body (8), a plurality of first extrusion holes (9) uniformly distributed along a first circumference are formed in the mold body (8), and a plurality of second extrusion holes (10) uniformly distributed along a second circumference are formed in the mold body (8), the first circumference and the second circumference are concentric, the radius of the second circumference is smaller than that of the first circumference, the adjacent two first extrusion holes (9) are communicated through a first connecting port (11), and the adjacent two second extrusion holes (10) are communicated through a second connecting port (12); a plurality of third connecting ports (13) are uniformly distributed between the first circumference and the second circumference, the third connecting port (13) is arranged along the radial direction of the first circumference and the second circumference, one end of the third connecting port (13) is communicated with the first extrusion hole (9) on the first circumference, and the other end of the third connecting port (13) is communicated with the second extrusion hole (10) on the second circumference.

8. The mold of claim 7, wherein: The first extrusion hole (9) and the second extrusion hole (10) are circular or elliptical.

9. A mould as claimed in claim 7 or 8, characterised in that: The number of the first extrusion hole (9) is the same as that of the second extrusion hole (10).

10. The mold of claim 9, wherein: The first extrusion hole (9) and the second extrusion hole (10) are aligned in the radial direction, and the first extrusion hole (9) and the second extrusion hole (10) are communicated through the third connecting port (13).

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