Multi-arm rotating structure

Abstract

The utility model aims at providing a multi-arm rotating structure which comprises a center seat, a plurality of bearing arms distributed in the circumferential direction are integrally formed on the outer circumferential wall of the center seat, all the bearing arms extend in the direction away from the center seat, and the interior of the center seat and the interior of all the bearing arms are of hollow-out structures formed through 3D printing. Therefore, compared with a mechanical part of a solid structure in the prior art, the multi-arm rotating structure is manufactured through 3D printing, the interior of the multi-arm rotating structure is of a hollow structure, the overall weight can be effectively reduced while the overall structural strength is guaranteed, and the weight ratio of the multi-arm rotating structure is reduced under the condition that the load capacity of a driving source is equal. And therefore, the weight ratio of the workpiece is effectively increased.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical parts, and in particular to a multi-arm rotating structure. Background Technology

[0002] In industrial manufacturing, various mechanical parts are designed to meet the needs of automated production. The main motor and other drive sources are used to drive the mechanical parts to process the workpiece.

[0003] When the workpiece is large in size and weight, or when it is expected that multiple workpieces can be picked up and placed simultaneously, the structural strength of the mechanical components used needs to be sufficiently high to meet the load requirements of the workpiece. Currently, the structural strength of mechanical components is achieved by increasing the structural volume.

[0004] However, this method of increasing structural volume to enhance structural strength has the following drawbacks: while increasing structural strength, it significantly increases the size and weight of the mechanical components themselves, thus requiring a main motor with a larger load capacity to drive these components. In other words, for a main motor with a specific load capacity, the heavier the mechanical components mounted on its output shaft, the smaller the weight of the workpiece it can support, resulting in the mechanical components consuming excessive load from the main motor. Therefore, to address these shortcomings, this application proposes a lightweight multi-arm rotating structure that improves structural strength while effectively reducing weight. Utility Model Content

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a lightweight multi-arm rotating structure that can improve structural strength while effectively reducing weight.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A multi-arm rotating structure, comprising:

[0008] The central base has several circumferentially distributed support arms integrally formed on its outer peripheral wall. Each support arm extends away from the central base. The interior of the central base and each support arm is a hollow structure formed by 3D printing.

[0009] Optionally, the central base and each of the supporting arms are provided with a plurality of 3D printed frames, and the 3D printed frames are connected in sequence to form the hollow structure between the 3D printed frames.

[0010] Optionally, in one of the 3D printing frames, the 3D printing frame includes a plurality of support rods, one end of each support rod is connected to each other, and the other end of each support rod is connected to adjacent 3D printing frames, so that the hollow structure is formed between each support rod.

[0011] Optionally, a through hole is provided on the central seat.

[0012] Optionally, the center seat is further provided with a plurality of screw holes, each of the screw holes being distributed at equal angles around the through hole.

[0013] Optionally, a groove is also provided on the top surface of the center seat, and the through hole and each of the screw holes are located on the inner bottom wall of the groove, and the groove and the through hole are coaxially arranged.

[0014] Optionally, the support arm includes a main connector, a middle connector, and a tail connector connected sequentially end to end, and the main connector is connected to the center seat.

[0015] Optionally, the main connector includes a plurality of main connector rods, one end of each main connector rod being connected to the center seat, and the other end of each main connector rod being connected to the central connector.

[0016] Optionally, the middle connection includes an X-shaped connecting frame and two side blocks, the X-shaped connecting frame being connected to the two side blocks respectively, and each side block being connected to two of the main connecting rods therein.

[0017] Optionally, the tail section includes two tail rods, one end of each tail rod is connected to one of the two side blocks, and the other ends of the two tail rods are connected together.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] This utility model discloses a multi-arm rotating structure, including a central base. Several circumferentially distributed support arms are integrally formed on the outer peripheral wall of the central base, each extending away from the central base. The interior of both the central base and each support arm is a 3D-printed hollow structure. Thus, compared to solid mechanical parts in the prior art, this multi-arm rotating structure, manufactured using 3D printing and featuring a hollow interior, effectively reduces overall weight while maintaining structural strength. Under the same load capacity of the drive source, reducing the weight proportion of the multi-arm rotating structure effectively increases the weight proportion of the workpiece. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the multi-arm rotating structure according to one embodiment of the present invention;

[0022] Figure 2 for Figure 1 The front view of the multi-arm rotating structure shown;

[0023] Figure 3 for Figure 1 Rear view of the multi-arm rotating structure shown;

[0024] Figure 4 This is a schematic diagram of the combined structure of a 3D printed stereo frame according to one embodiment of the present invention;

[0025] Figure 5 for Figure 4 A schematic diagram of the combined structure of the 3D printed frame shown from another angle;

[0026] Figure 6 This is a schematic diagram of a 3D printed stereo frame according to one embodiment of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 10. Multi-arm rotating structure; 100. Center seat; 200. Bearing arm; 300. 3D printed frame; 310. Support rod; 110. Through hole; 120. Screw hole; 130. Groove; 210. Main connection; 220. Middle connection; 230. Tail connection; 211. Main connecting rod; 221. X-shaped connecting frame; 222. Side block; 231. Tail connecting rod; 2111. First fixing hole; 2311. Second fixing hole. Detailed Implementation

[0029] To facilitate understanding of this utility model, a more comprehensive description will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of this utility model.

[0030] like Figures 1 to 4 As shown, a multi-arm rotating structure 10 includes a central base 100. Several circumferentially distributed support arms 200 are integrally formed on the outer peripheral wall of the central base 100. Each support arm 200 extends away from the central base 100. The interior of the central base 100 and each support arm 200 is a hollow structure formed by 3D printing.

[0031] It should be noted that each support arm 200 is fixed to the outer wall of the central base 100 at equal angles around its circumference. The central base 100 and each support arm 200 are integrally formed structures by 3D printing. The interiors of the central base 100 and each support arm 200 are hollow structures. During installation and use, the output shaft of the drive source, such as the main motor, is fixedly mounted on the central base 100. Then, a pick-and-place tool is installed on the end of the support arm 200 away from the central base 100. This allows the main motor to drive the multi-arm rotating structure 10 of this application to pick up and place multiple workpieces. Thus, compared to solid mechanical parts in the prior art, the multi-arm rotating structure 10 of this application, made by 3D printing with a hollow interior, effectively reduces the overall weight while maintaining overall structural strength. Under the same load capacity of the drive source, by reducing the weight proportion of the multi-arm rotating structure 10, the weight proportion of the workpiece is effectively increased.

[0032] like Figures 4 to 6 As shown, in one embodiment, the center base 100 and each support arm 200 are provided with a plurality of 3D printed frames 300, and the 3D printed frames 300 are connected in sequence to form a hollow structure between the 3D printed frames 300.

[0033] It should be noted that the outer walls of the central base 100 and each support arm 200 are dense wall structures, that is, the overall structure of the central base 100 and each support arm 200 is a hollow shell structure. Several 3D printed frames 300 are set inside the central base 100 and each support arm 200. The 3D printed frames 300 are interconnected, and the 3D printed frames 300 adjacent to the inner walls of the central base 100 and each support arm 200 are also fixedly connected to the inner walls of the central base 100 and each support arm 200. In this way, the multi-arm rotating structure 10 formed by the central base 100, each support arm 200 and each 3D printed frame 300 can ensure the overall structural strength while making the 3D printed frames 300 form a hollow structure.

[0034] like Figures 4 to 6 As shown, in one embodiment, in one of the 3D printed frames 300, the 3D printed frame 300 includes a plurality of support rods 310, one end of each support rod 310 is connected to each other, and the other end of each support rod 310 is connected to adjacent 3D printed frames 300, so that a hollow structure is formed between each support rod 310.

[0035] It should be noted that one end of each support rod 310 is fixed, and the other end of each support rod 310 extends outward, making the 3D printed frame 300 have a star-shaped structure. In one embodiment, any 3D printed frame 300 includes eight support rods 310, of which four support rods 310 form a first group, and the remaining four support rods 310 form a second group. The four support rods 310 of the first group and the four support rods 310 of the second group are distributed in opposite directions. Moreover, the four support rods 310 of the first group / second group are distributed at equal angles along the central axis. In this way, the ends of the eight support rods 310 that are far apart from each other are connected to the support rods 310 of the adjacent 3D printed frames 300, so that a lattice-like (i.e., an ordered, repeating grid or lattice structure) hollow structure is formed between the multiple 3D printed frames 300. In this way, the multi-arm rotating structure 10 produced by 3D printing can effectively reduce the overall weight while ensuring the overall structural strength.

[0036] like Figures 1 to 3 As shown, in one embodiment, a through hole 110 is provided on the center seat 100. It should be noted that the through hole 110 is located at the center of the center seat 100, so that the output shaft of the drive source such as the main motor can be installed and fixed to the multi-arm rotating structure 10 through the through hole 110.

[0037] like Figures 1 to 3 As shown, in one embodiment, the center seat 100 is also provided with a plurality of screw holes 120, and each screw hole 120 is distributed in a circular and equidistant manner around the through hole 110.

[0038] Thus, after passing the screw through the screw hole 120, the screw can be installed and fixed to the output shaft of the main motor or other drive source.

[0039] like Figures 1 to 3 As shown, in one embodiment, a groove 130 is also provided on the top surface of the center seat 100, and the through hole 110 and each screw hole 120 are located on the inner bottom wall of the groove 130, and the groove 130 and the through hole 110 are coaxially arranged.

[0040] This makes it easy to snap flanges and other components into the groove 130, thereby stably installing and fixing the output shaft of the main motor and other drive sources to the multi-arm rotating structure 10.

[0041] like Figures 1 to 3 As shown, in one embodiment, the support arm 200 includes a main connector 210, a middle connector 220 and a tail connector 230 connected end to end in sequence, and the main connector 210 is connected to the center seat 100.

[0042] It should be noted that the main connector 210, the middle connector 220, and the tail connector 230 are connected end to end along a straight line. The main connector 210 is fixedly connected to the center seat 100. In order to further reduce the weight of the multi-arm rotating structure 10 while ensuring the overall structural strength of the multi-arm rotating structure 10, the supporting arm 200 is configured with different shapes at different positions.

[0043] like Figures 1 to 3 As shown, in one embodiment, the main connector 210 includes a plurality of main connector rods 211, one end of each main connector rod 211 is connected to the center seat 100, and the other end of each main connector rod 211 is connected to the middle connector 220.

[0044] It should be noted that the main connecting rods 211 are spaced apart to reduce the space occupied by materials. In this way, the structural strength of the bearing arm 200 can be guaranteed while reducing its weight, and it is also convenient to install the main motor and other components on the bearing arm 200.

[0045] like Figures 1 to 3 As shown, in one embodiment, the central connection 220 includes an X-shaped connecting frame 221 and two side blocks 222. The X-shaped connecting frame 221 is connected to the two side blocks 222 respectively, and each side block 222 is connected to two main connecting rods 211 therein.

[0046] Thus, a through hole is formed in the middle of the connecting part 220, which is composed of the X-shaped connecting frame 221 and the two side blocks 222, ensuring that the connecting part 220 has sufficient structural strength while also reducing the weight of the connecting part 220.

[0047] Furthermore, such as Figures 1 to 3 As shown, in one embodiment, the tail section 230 includes two tail rods 231, one end of each tail rod 231 is connected to two side blocks 222, and the other ends of the two tail rods 231 are connected together.

[0048] It should be noted that the distance between the two tail rods 231 gradually decreases towards the direction away from the middle connection 220, so that the ends are eventually connected together. In this way, while ensuring the structural strength of the support arm 200, its weight can be further reduced. Specifically, the total cross-sectional area of ​​the main connection 210, the middle connection 220, and the tail connection 230 gradually decreases in sequence. This ensures that the constructed support arm 200 as a whole has sufficient structural strength. Furthermore, in one embodiment, the outer diameter of the tail rod 231 gradually decreases towards the direction away from the side block 222. Thus, since the tail rod 231 is located at the tail end, reducing its diameter further reduces the overall weight of the support arm 200.

[0049] Furthermore, in one embodiment, the main connecting rod 211, the X-shaped connecting frame 221, the side block 222, and the tail connecting rod 231 are integrally formed structures by 3D printing, and a plurality of 3D printed three-dimensional frames 300 are formed inside the main connecting rod 211, the X-shaped connecting frame 221, the side block 222, and the tail connecting rod 231.

[0050] like Figures 1 to 3 As shown, in one embodiment, the two main connecting rods 211 are provided with a first fixing hole 2111, and the two tail connecting rods 231 are provided with a second fixing hole 2311 at the end where they are connected.

[0051] It should be noted that, for example, multiple first fixing holes 2111 are provided. A small motor or other drive source can be fixedly mounted on the main connector 210 by passing screws through each first fixing hole 2111. Furthermore, a second fixing hole 2311 is provided at the tail end of the tail rod 231. Thus, a pulley or other component can be fixed to the tail end of the tail connector 230 by screws. The pulley and the small motor mounted on the main connector 210 can be connected by a belt. Thus, a suction cup or other component for picking up and placing workpieces can be fixedly mounted on the pulley, allowing the small motor to drive the workpiece to rotate relative to the support arm 200. Since the multi-arm rotating structure 10 has multiple support arms 200, for example, this application shows a specific embodiment with four support arms 200. The main motor can drive the multi-arm rotating structure 10 to rotate as a whole, thereby causing each workpiece to rotate as a whole relative to the center seat 100. The small motors mounted on each support arm 200 can then drive the corresponding workpiece to rotate independently. Thus, the multi-arm rotating structure 10 of this application can be installed on a drive source such as a main motor for handling multiple workpieces. When the workpieces are heavy or need to be handled simultaneously, the total weight of the workpieces is large. If existing solid mechanical parts are used as the connection between the main motor and the workpieces, a main motor with a larger load capacity is often required. However, the multi-arm rotating structure 10 provided in this application is made using 3D printing and has a hollow internal structure. Therefore, while effectively ensuring structural strength, it can reduce the overall weight, thereby reducing the load capacity requirement of the main motor. In other words, under the drive of a main motor with the same load capacity, the weight ratio of mechanical parts can be effectively reduced, and the weight ratio of the workpiece can be increased.

[0052] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the utility model patent. Unless otherwise specifically defined, the installation / fixing / setting mentioned in this utility model can be understood as including, but not limited to, locking and fixing with screws / bolts, welding, or bonding with adhesives, wherein the adhesives used can be commercially available finished products. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A multi-arm rotating structure, characterized in that, include: The central base has several circumferentially distributed support arms integrally formed on its outer peripheral wall. Each support arm extends away from the central base. The interior of the central base and each support arm is a hollow structure formed by 3D printing.

2. The multi-arm rotating structure according to claim 1, characterized in that, The central base and each of the supporting arms are equipped with a number of 3D printed frames, which are connected in sequence to form the hollow structure between them.

3. The multi-arm rotating structure according to claim 2, characterized in that, In one of the 3D printed frames, the 3D printed frame includes a plurality of support rods, one end of each support rod is connected to each other, and the other end of each support rod is connected to adjacent 3D printed frames, so that the hollow structure is formed between each support rod.

4. The multi-arm rotating structure according to claim 1 or 3, characterized in that, A through hole is provided on the central seat.

5. The multi-arm rotating structure according to claim 4, characterized in that, The central seat is also provided with a number of screw holes, and each screw hole is distributed in a circular shape at equal angles around the through hole.

6. The multi-arm rotating structure according to claim 5, characterized in that, A groove is also provided on the top surface of the center seat. The through hole and each of the screw holes are located on the inner bottom wall of the groove, and the groove and the through hole are coaxially arranged.

7. The multi-arm rotating structure according to claim 1 or 3, characterized in that, The support arm includes a main connector, a middle connector and a tail connector connected in sequence, and the main connector is connected to the center seat.

8. The multi-arm rotating structure according to claim 7, characterized in that, The main connector includes several main connector rods, one end of each main connector rod is connected to the center seat, and the other end of each main connector rod is connected to the central connector.

9. The multi-arm rotating structure according to claim 8, characterized in that, The central connection includes an X-shaped connecting frame and two side blocks. The X-shaped connecting frame is connected to the two side blocks respectively, and each side block is connected to two of the main connecting rods.

10. The multi-arm rotating structure according to claim 9, characterized in that, The tail section includes two tail rods, one end of each tail rod is connected to one of the two side blocks, and the other end of each tail rod is connected to the other side block.

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