Plastic gear with reinforcing ribs

Abstract

The utility model relates to the technical field of plastic gears, in particular to a plastic gear with reinforcing ribs, which comprises a gear ring, radial grooves are arranged on the inner side wall of the gear ring, axial grooves are uniformly arranged on the inner side wall of the gear ring, radial reinforcing ribs are uniformly arranged in the radial grooves, axial reinforcing ribs are arranged in the axial grooves, and the radial reinforcing ribs and the axial reinforcing ribs are arranged on the inner side wall of the gear ring. A first center sleeve is installed among the six axial reinforcing ribs, a second center sleeve is installed among the six axial reinforcing ribs, and a threaded sleeve is rotationally installed on the second center sleeve. The radial grooves can prevent the radial reinforcing ribs from generating axial displacement, the axial grooves can prevent the axial reinforcing ribs from generating radial displacement, when the shaft rotates, the axial reinforcing ribs can promote the gear ring to rotate, the cambered surfaces of the radial reinforcing ribs and the axial reinforcing ribs can reduce stress concentration of the whole structure, the gear ring is effectively supported, and the service life of the gear ring is prolonged. And the effects of reducing the consumption of consumables and improving the printing efficiency can be achieved while the structural strength is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of plastic gear technology, and in particular to a plastic gear with reinforcing ribs. Background Technology

[0002] In the field of mechanical transmission design, plastic gears are widely used due to their advantages such as light weight, low cost, and low noise. With the increasing demands on the performance of plastic gears in industrial production and product manufacturing, a plastic gear with reinforced ribs and superior performance is particularly important. When manufacturing such plastic gears using 3D printing technology, the following key technologies are typically required:

[0003] 1. 3D printing material technology: Select suitable engineering plastic materials, such as polyamide (PA), polycarbonate (PC), acrylonitrile-butadiene-styrene copolymer (ABS), etc. These materials have good mechanical properties, wear resistance and corrosion resistance;

[0004] 2. 3D printing technology: Using 3D printing technologies such as fused deposition modeling (FDM), stereolithography (SLA), and selective laser sintering (SLS) to manufacture plastic gears;

[0005] 3. Reinforcing Rib Design and Optimization Technology: Based on the stress analysis and usage scenarios of plastic gears, computer-aided design (CAD) and finite element analysis (FEA) technologies are used to accurately design the shape, size, and layout of the reinforcing ribs.

[0006] When 3D printing gears, solid printing ensures structural strength, but it consumes a lot of materials and is slow. Hollow printing saves materials and reduces printing time, but it reduces structural strength. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a plastic gear with reinforcing ribs, solving the technical problem that when 3D printing gears, solid printing, while ensuring structural strength, consumes a large amount of consumables and is slow, while hollow printing, although saving consumables and reducing printing time, reduces structural strength.

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] A plastic gear with reinforcing ribs includes a gear ring, a radial groove formed on the inner sidewall of the gear ring, an axial groove formed evenly on the inner sidewall of the gear ring, radial reinforcing ribs evenly installed in the radial grooves, axial reinforcing ribs installed in the axial grooves, a first central sleeve installed between the six axial reinforcing ribs, a second central sleeve installed between the six axial reinforcing ribs, and a threaded sleeve rotatably installed on the second central sleeve.

[0010] Preferred configuration: radial stiffeners and axial stiffeners are slidably connected.

[0011] Preferably, both the first and second center sleeves have slots.

[0012] Preferably, both the first center sleeve and the threaded sleeve have pin grooves.

[0013] Preferred configuration: The threaded sleeve and the first center sleeve are threaded together.

[0014] Preferably, the slot is used to accommodate radial and axial reinforcing ribs.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. During use, the assembled gear is fitted onto the required shaft, and then the connection between the gear and the shaft is completed by inserting the pin block into the pin groove. During use, since the pin block is located in the pin groove, the first center sleeve and the threaded sleeve will not rotate relative to each other, which can prevent the threaded sleeve and the second center sleeve from falling off. The radial groove can prevent the radial reinforcing rib from axial displacement, and the axial groove can prevent the axial reinforcing rib from radial displacement. When the shaft rotates, it will drive the first center sleeve and the second center sleeve to rotate. The first center sleeve and the second center sleeve will drive the radial reinforcing rib and the axial reinforcing rib to rotate through the slot. The axial reinforcing rib will cause the gear ring to rotate. The arc surface of the radial reinforcing rib and the axial reinforcing rib will reduce the stress concentration of the overall structure and effectively support the gear ring. This achieves the effect of ensuring structural strength while reducing consumables and improving printing efficiency.

[0017] Second, during 3D printing, one toothed ring, one first center sleeve, one second center sleeve, and one threaded sleeve are printed separately. Six radial and axial reinforcing ribs are also printed. Radial grooves, axial grooves, slots, and pin grooves are directly formed during printing. This split printing method reduces printing difficulty, eliminates the need for supporting the printed parts, and allows for easy replacement of parts during later maintenance. Only the parts to be replaced need to be printed separately and then assembled, reducing maintenance time and costs. Attached Figure Description

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is an overall structural diagram of the present invention;

[0020] Figure 2 This is an exploded structural diagram of the present invention;

[0021] Figure 3 This is a cross-sectional view of the toothed ring structure of this utility model;

[0022] Figure 4 This is a cross-sectional view of the central sleeve structure of this utility model.

[0023] Legend: 1. Gear ring; 2. Radial groove; 3. Axial groove; 4. Radial reinforcing rib; 5. Axial reinforcing rib; 6. First center sleeve; 7. Second center sleeve; 8. Threaded sleeve; 9. Slot; 11. Pin slot. Detailed Implementation

[0024] This application provides a plastic gear with reinforcing ribs, effectively solving the technical problem that in 3D printing gears, solid printing, while ensuring structural strength, consumes a large amount of consumables and is slow, while hollow printing, although saving consumables and reducing printing time, reduces structural strength. In use, the assembled gear is fitted onto the required shaft, and then a pin is inserted into the pin groove to complete the connection between the gear and the shaft. During use, because the pin is located in the pin groove, the first center sleeve and the threaded sleeve cannot rotate relative to each other, preventing the threaded sleeve and the second center sleeve from falling off. The radial groove prevents axial displacement of the radial reinforcing ribs, and the axial groove prevents radial displacement of the axial reinforcing ribs. When the shaft rotates, it will drive the first center sleeve and the second center sleeve to rotate. The first and second center sleeves rotate through the slots, causing the radial and axial reinforcing ribs to rotate. The axial reinforcing ribs then cause the gear ring to rotate. The arc surfaces of the radial and axial reinforcing ribs reduce stress concentration in the overall structure, effectively supporting the gear ring. This achieves the effect of ensuring structural strength while reducing material consumption and improving printing efficiency. During 3D printing, one gear ring, one first center sleeve, one second center sleeve, and one threaded sleeve are printed, along with six radial and axial reinforcing ribs. The radial grooves, axial grooves, slots, and pin grooves are directly formed during printing. This split printing method reduces printing difficulty, eliminates the need for supporting the printed parts, and allows for easy replacement of parts during later maintenance. Only the parts to be replaced need to be printed separately and then reassembled, reducing maintenance time and costs.

[0025] Example

[0026] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the technical problem that when 3D printing gears, solid printing, while ensuring structural strength, consumes a large amount of consumables and is slow, while hollow printing, although saving consumables and reducing printing time, reduces structural strength. The overall idea is as follows:

[0027] In view of the problems existing in the prior art, the present invention provides a plastic gear with reinforcing ribs, including a gear ring 1, a radial groove 2 formed on the inner sidewall of the gear ring 1, an axial groove 3 uniformly formed on the inner sidewall of the gear ring 1, and radial reinforcing ribs 4 uniformly installed in the radial groove 2.

[0028] An axial reinforcing rib 5 is installed in the axial groove 3. A first central sleeve 6 is installed between the six axial reinforcing ribs 5. A second central sleeve 7 is installed between the six axial reinforcing ribs 5. A threaded sleeve 8 is rotatably installed on the second central sleeve 7. The radial reinforcing rib 4 and the axial reinforcing rib 5 are slidably connected.

[0029] Both the first center sleeve 6 and the second center sleeve 7 are provided with slots 9, and both the first center sleeve 6 and the threaded sleeve 8 are provided with pin slots 11. The threaded sleeve 8 and the first center sleeve 6 are threaded together. The slots 9 are used to accommodate the radial reinforcing ribs 4 and the axial reinforcing ribs 5.

[0030] Gear ring 1: As the main body of the plastic gear, its outer teeth are used to mesh with other gears or transmission components to realize power transmission. The radial groove 2 opened on the inner side wall is used to accommodate the radial reinforcing rib 4, prevent the radial reinforcing rib 4 from axial displacement, and at the same time provide the outer peripheral structure for the entire gear. Under the drive of the axial reinforcing rib 5, it can rotate to complete the transmission function.

[0031] Radial groove 2: Used to install radial reinforcing rib 4 and restrict its axial movement, so that the radial reinforcing rib 4 can stably provide radial support force for the gear ring 1, enhance the structural strength of the gear under radial force, and reduce stress concentration;

[0032] Axial groove 3: Used to install axial reinforcing rib 5, restricting the radial movement of axial reinforcing rib 5, ensuring that axial reinforcing rib 5 can stably provide axial support for gear ring 1, assisting gear ring 1 to maintain structural stability when subjected to axial force, and working in conjunction with radial reinforcing rib 4 to enhance the structural strength of the entire gear.

[0033] Radial stiffener 4: It is slidably connected with axial stiffener 5 to form an integral structure. Its main function is to enhance the strength of the gear in the radial direction, reduce stress concentration through its own arc surface, provide radial support for the gear ring 1, so that the gear can better maintain its shape and stability when subjected to radial force, and ensure the accuracy of power transmission.

[0034] Axial stiffeners 5: Six axial stiffeners 5 together support and connect the first center sleeve 6 and the second center sleeve 7. When the gear is working, the axial stiffeners 5 can cause the gear ring 1 to rotate, and transmit the rotational motion of the first center sleeve 6 and the second center sleeve 7 to the gear ring 1. At the same time, they enhance the structural strength of the gear in the axial direction and reduce stress concentration.

[0035] First center sleeve 6: It cooperates with radial reinforcing rib 4 and axial reinforcing rib 5 through slot 9, and plays the role of connecting and fixing the reinforcing rib. After being connected to the shaft, the first center sleeve 6 transmits the rotational motion of the shaft to the reinforcing rib and gear ring 1. At the same time, it is threadedly connected to threaded sleeve 8 and cooperates with pin block through pin groove 11 to prevent threaded sleeve 8 from rotating relative to each other and falling off, thus ensuring the stability of the entire gear structure.

[0036] The second center sleeve 7, together with the first center sleeve 6, clamps the threaded sleeve 8, radial reinforcing rib 4, and axial reinforcing rib 5 from both sides, enhancing the stability of the overall structure. It provides a rotational mounting position for the threaded sleeve 8 and assists the first center sleeve 6 in transmitting the rotational force of the shaft to the reinforcing rib and gear ring 1, playing a stabilizing and transmission auxiliary role in the entire gear structure.

[0037] Threaded sleeve 8: During assembly, the threaded sleeve 8 is rotated to tighten it with the first center sleeve 6, thereby achieving a tight connection between the first center sleeve 6, the second center sleeve 7 and the reinforcing rib. After being connected to the shaft, the threaded sleeve 8 cooperates with the first center sleeve 6 to prevent itself from rotating relative to the shaft and falling off, ensuring the reliability of power transmission, and at the same time participating in the force transmission and stable support of the entire gear structure.

[0038] Slot 9: Used to accommodate radial reinforcing rib 4 and axial reinforcing rib 5, tightly connecting the reinforcing ribs to the center sleeve, so that the first center sleeve 6 and the second center sleeve 7 can drive the radial reinforcing rib 4 and axial reinforcing rib 5 to rotate through the slot 9, realizing the transmission of force, while enhancing the stability of the connection between the reinforcing ribs and the center sleeve, and ensuring the integrity of the entire gear structure.

[0039] Pin groove 11: When the gear is connected to the shaft, the pin block is inserted into the pin groove 11 to prevent the first center sleeve 6 and the threaded sleeve 8 from rotating relative to each other, thereby preventing the threaded sleeve 8 from falling off the second center sleeve 7, ensuring the reliability and stability of the gear connection with the shaft, and ensuring the stability of the gear structure during power transmission.

[0040] Working principle:

[0041] The first step involves printing one toothed ring 1, one first central sleeve 6, one second central sleeve 7, and one threaded sleeve 8 during 3D printing. Six radial reinforcing ribs 4 and axial reinforcing ribs 5 are also printed. Radial grooves 2, axial grooves 3, slots 9, and pin grooves 11 are directly formed during printing. This split printing method reduces printing difficulty, eliminates the need for supporting the printed parts, and allows for easy replacement of parts during later maintenance. Only the parts to be replaced need to be printed separately and then reassembled, reducing maintenance time and costs.

[0042] The second step involves slidably connecting the radial reinforcing ribs 4 and axial reinforcing ribs 5 to form a single unit. Then, the six assembled radial and axial reinforcing ribs 4 and 5 are sequentially installed inside the toothed ring 1, ensuring the top of the radial reinforcing rib 4 is in the radial groove 2 and the top of the axial reinforcing rib 5 is in the axial groove 3. Next, the slots 9 on the first and second center sleeves 6 and 7 are aligned with the radial and axial reinforcing ribs 4 and 5 from both sides, and the first and second center sleeves 6 and 7 are installed. Then, the threaded sleeve 8 is inserted into the second center sleeve 7, and the threaded sleeve 8 is rotated clockwise to create a threaded connection between the threaded sleeve 8 and the first center sleeve 6. When the first center sleeve 6 is tightened, the pin slots 11 on the first center sleeve 6 and the threaded sleeve 8 will align, and the first center sleeve 6 will cooperate with the second center sleeve 7 to clamp the threaded sleeve 8 from both sides. The second center sleeve 7 and the threaded sleeve 8 will also clamp the radial and axial reinforcing ribs 4 and 5 from both sides, completing the assembly.

[0043] The third step involves fitting the assembled gear onto the required shaft during use, and then connecting the gear and shaft by inserting the pin block into the pin groove 11. During use, since the pin block is located in the pin groove 11, the first center sleeve 6 and the threaded sleeve 8 cannot rotate relative to each other, preventing the threaded sleeve 8 and the second center sleeve 7 from falling off. The radial groove 2 prevents the radial reinforcing rib 4 from axially displacing, and the axial groove 3 prevents the axial reinforcing rib 5 from axially displacing. When the shaft rotates, it will drive the first center sleeve 6 and the second center sleeve 7 to rotate. The first center sleeve 6 and the second center sleeve 7 will drive the radial reinforcing rib 4 and the axial reinforcing rib 5 to rotate through the slot 9. The axial reinforcing rib 5 will cause the gear ring 1 to rotate. The arc surfaces of the radial reinforcing rib 4 and the axial reinforcing rib 5 will reduce the stress concentration of the overall structure and effectively support the gear ring 1, achieving the effect of ensuring structural strength while reducing consumables and improving printing efficiency.

[0044] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A plastic gear with reinforcing ribs, comprising a tooth ring (1), characterized in that, The inner side wall of the gear ring (1) is provided with radial grooves (2), and the inner side wall of the gear ring (1) is uniformly provided with axial grooves (3), the radial grooves (2) are uniformly provided with radial reinforcing ribs (4), the axial grooves (3) are provided with axial reinforcing ribs (5), six axial reinforcing ribs (5) are provided with a first center sleeve (6), six axial reinforcing ribs (5) are provided with a second center sleeve (7), and the second center sleeve (7) is rotatably provided with a threaded sleeve (8).

2. A plastic gear with reinforcing ribs as claimed in claim 1, characterized in that The radial reinforcing ribs (4) and the axial reinforcing ribs (5) are slidingly connected.

3. A plastic gear with reinforcing ribs as claimed in claim 1, characterized in that The first center sleeve (6) and the second center sleeve (7) are both provided with clamping grooves (9).

4. The plastic gear with reinforcing ribs as set forth in claim 1, wherein The first center sleeve (6) and the threaded sleeve (8) are both provided with pin grooves (11).

5. The plastic gear with reinforcing ribs as set forth in claim 1, wherein The threaded sleeve (8) and the first center sleeve (6) are threadedly connected.

6. A plastic gear with reinforcing ribs as claimed in claim 3, characterized in that The clamping grooves (9) are used for accommodating the radial reinforcing ribs (4) and the axial reinforcing ribs (5).

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