Transmission apparatus for a modular braiding device

Abstract

The application discloses a transmission device of a modular braiding device, comprising a corner wheel movement unit, a gear set transmission unit and a gasket; the gear set transmission unit comprises symmetrically arranged motor gears, an adjustable gear, a driving gear and a plurality of auxiliary gears arranged in rows. Compared with the prior art, the application compensates the gear meshing gap by increasing or decreasing the number of gaskets; the symmetric double motor, the adjustable gear transmission chain and the modular gear row are cooperatively designed, so that the transmission device has the advantages of high synchronization precision, flexible expansion, convenient maintenance and reliable operation, and is suitable for the preparation of high-performance three-dimensional braided composite material preforms.

Description

Technical Field

[0001] This invention relates to the field of composite material preform forming technology, and more specifically to a transmission device for a modular weaving apparatus. Background Technology

[0002] Three-dimensional braided composite materials, consisting of fiber bundles arranged in multiple directions to form a spatial network structure, possess advantages such as good structural integrity, strong impact resistance, and higher damage tolerance, making them ideal materials for aerospace main load-bearing components. Their fabrication relies on a three-dimensional braiding machine, and the transmission system is the core of this machine. Existing three-dimensional braiding equipment transmission systems suffer from the following drawbacks: complex structure and high cost; some systems use multiple independent motors for separate drives, resulting in a cumbersome equipment structure; low synchronization accuracy, prone to loss of synchronization during multi-load collaborative operation, affecting braiding uniformity; high risk of mechanical jamming, with long-term gear wear causing accumulated errors in meshing clearance, leading to transmission instability; poor scalability and modularity, making it difficult to flexibly and linearly adjust the transmission scale according to the required braiding preform width; and difficult maintenance, with inconvenient clearance compensation adjustment after gear wear. Therefore, a new braiding transmission device is urgently needed to solve the above technical problems. Summary of the Invention

[0003] Purpose of the invention: The present invention aims to overcome the above-mentioned defects and provide a transmission device for a modular braiding device to solve the problems of complex transmission structure, low transmission efficiency, high manufacturing cost, easy mechanical jamming during operation, and poor system expandability in multi-layer three-dimensional braiding systems. It has the advantages of high synchronization accuracy, flexible expansion, convenient maintenance, and reliable operation, and is suitable for the preparation of high-performance three-dimensional braided composite material preforms.

[0004] Technical Solution: To achieve the above objectives, the transmission device of the modular weaving apparatus of the present invention includes multiple corner wheel motion units, a gear transmission unit, several shims disposed below the gear transmission unit, and a motor drive unit connected to the gear transmission unit. The gear transmission unit includes a motor gear, an adjustable gear meshing with the motor gear, a driving gear coaxially arranged with the adjustable gear, and multiple auxiliary gears meshing with the driving gear. The motor drive unit, motor gear, adjustable gear, and driving gear are all symmetrically distributed around the same axis of symmetry. Multiple auxiliary gears are arranged in a row along a straight line and mesh with each other. The two ends of this row of auxiliary gears mesh with the driving gears on both sides of the axis of symmetry, and the auxiliary gears and driving gears are coaxially arranged with the corner wheel motion units. The corner wheel motion units are connected to the auxiliary gears. The shims are disposed below the axial mounting surfaces of the adjustable gears and / or the auxiliary gears. Furthermore, there are two motor drive units, which operate synchronously.

[0005] Furthermore, the motor gear, adjustable gear, and drive gear are all provided in pairs.

[0006] Furthermore, the adjustable gear is a helical cylindrical gear, and both the driving gear and the auxiliary gear are straight bevel gears.

[0007] Furthermore, the adjustable gear, the driving gear, and the auxiliary gear have the same module.

[0008] Furthermore, the single corner wheel motion unit includes a corner wheel and a nylon anti-collision block; the top of the corner wheel is provided with a toothed disc, and the nylon anti-collision block is embedded in the toothed groove.

[0009] Furthermore, the angular wheel motion unit has a 0° core tube on its central shaft, which passes through the center of the angular wheel.

[0010] Furthermore, the 0° core tube is provided with yarn guide ceramic eyes at both ends, and the 0° core tube is made of carbon steel.

[0011] Furthermore, the adjustable gear, the driving gear, and the auxiliary gear are all made of steel that has undergone quenching and tempering treatment.

[0012] Furthermore, the motor drive unit includes a drive motor, which is either a servo motor or a stepper motor.

[0013] Beneficial effects: Compared with the prior art, the present invention has the following significant effects: By using a symmetrically arranged dual-motor drive and a row of meshing auxiliary gears, high-precision synchronous drive of multiple rows of corner wheels is achieved, reducing synchronization error and improving transmission rigidity; the modular design expands the system scale by increasing or decreasing the number of auxiliary gears and corner wheel motion units, meeting the needs of different weaving widths; by adding or removing shims to compensate for gear meshing clearance, maintenance costs and complexity are reduced; and the symmetrical layout and rigid transmission chain improve the system's transmission efficiency and operational stability. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 This is a front view of the overall structure of the present invention.

[0016] Figure 3 This is a schematic diagram of the single corner wheel motion unit structure described in this invention.

[0017] Figure 4 This is a schematic diagram of the gear transmission unit structure described in this invention. Detailed Implementation

[0018] This invention discloses a transmission device for a modular weaving apparatus.

[0019] Example 1

[0020] like Figures 1 to 4As shown, this embodiment provides a transmission device for a modular knitting apparatus. This transmission device includes a six-corner wheel motion unit 5, a gear transmission unit 7, several shims 12 located below the gear transmission unit 7, a motor drive unit 1 rigidly connected to the gear transmission unit 7, a 0° core tube 10, and a yarn guide eye 11. Two motor drive units 1 are provided and symmetrically distributed. The output shafts of the two motor drive units 1 are respectively connected to two motor gears 6 via flat keys. The motor drive units 1 are selected from servo motors or stepper motors, and the two are synchronized with high precision through a controller, forming a dual-motor drive system. Through a dual-motor cooperative control strategy, the two motors adopt a real-time torque synchronization and speed matching control mode. The main controller executes a compensation algorithm to perform differential speed correction and phase synchronization adjustment on the two motors, thereby avoiding damage such as meshing impact, backlash extrusion, and tooth breakage caused by asynchronous movement of the gears on both sides. Simultaneously, the motor drive unit 1 is equipped with a motor bearing assembly, which supports the motor output shaft and reduces the radial and axial loads generated during high-speed operation. The gear transmission unit 7 includes a motor gear 6, an adjustable gear 2 meshing with the motor gear 6, a driving gear 3 coaxially arranged with the adjustable gear 2, and four auxiliary gears 4 meshing with the driving gear 3. The motor gear 6, adjustable gear 2, and driving gear 3 are symmetrically distributed along the same axis of symmetry, and each has two units. The module of the adjustable gear 2, driving gear 3, and auxiliary gears 4 is all set to 4.5 to ensure stable meshing and synchronized precision during multi-stage gear transmission. The adjustable gear 2 is a helical cylindrical gear, while the driving gear 3 and auxiliary gears 4 are both straight bevel gears to meet the spatial posture requirements of the angle wheel running along the slightly curved track plate, thus ensuring smooth transmission. Simultaneously, the adjustable gear 2, driving gear 3, and auxiliary gears 4 are all made of heat-treated steel to improve transmission load-bearing capacity and wear resistance. Shims 12 are provided below the axial mounting surfaces of the adjustable gear 2 and auxiliary gears 4. By increasing or decreasing the number of axial shims, the axial mounting position of the corresponding gears can be adjusted to compensate for gear meshing clearance caused by long-term wear and restore transmission accuracy. This operation does not require disassembling the entire gear shaft, making maintenance extremely convenient. Four auxiliary gears 4 are arranged in a straight line and mesh with each other. The two ends of this row of auxiliary gears mesh with the driving gears 3 on both sides of the axis of symmetry. The four auxiliary gears and two driving gears in this row are coaxially connected to six corner wheel motion units 5. The "two-end drive, middle row" layout forms a rigid synchronous transmission chain. The gear transmission unit 7 synchronously drives each corner wheel motion unit 5, thereby changing the motion trajectory of the yarn carrier to achieve synchronous drive of multiple rows of yarn carriers, and thus completes multi-layer three-dimensional weaving. A single corner wheel motion unit 5 includes a corner wheel 8 and a nylon anti-collision block 9. The corner wheel 8 is made of high-strength cast steel and has a toothed disc at its top. The nylon anti-collision block 9 is embedded in the toothed groove to absorb impact and buffer vibration.The 0° core tube 10 is provided on the central shaft of the corner wheel motion unit 5, which passes through the center of the corner wheel 8 and is used for guiding and supporting the axial yarn. The 0° core tube 10 is supported and installed by a bearing located at the center of the corner wheel 8. The bearing is a deep groove ball bearing, which is used to reduce the relative friction between the 0° core tube 10 and the corner wheel 8 during rotation. The 0° core tube 10 is provided with yarn guide ceramic eyes 11 at both ends and is made of carbon steel. Its surface is treated with anti-wear to reduce the wear of the axial yarn during continuous movement.

[0021] Workflow: Upon starting the equipment, the two motor drive units 1 operate synchronously, driving two motor gears 6 to rotate in the same direction and at the same speed. Motor gear 6 drives the adjustable gear 2, which meshes with it, to rotate. Since the adjustable gear 2 is coaxial with the drive gear 3, it also drives the drive gear 3 to rotate. The two drive gears 3 drive a row of meshing auxiliary gears 4 to rotate synchronously from both ends. Ultimately, each drive gear 3 and each auxiliary gear 4 drives the corner wheel 8 in the connected corner wheel motion unit 5 to rotate synchronously and precisely through its output shaft (such as a flat shaft), achieving the weaving function. After the equipment has been running for a period of time, if wear occurs in the gear pairs, causing an increase in meshing clearance, the axial position of the gears can be changed by adjusting the number of shims 12 under the corresponding adjustable gear 2 and auxiliary gear 4, thereby easily eliminating the clearance and restoring transmission accuracy without replacing gears or performing complex disassembly.

[0022] Example 2

[0023] This embodiment, based on Embodiment 1, is optimized for high-load, long-term continuous weaving scenarios (such as multi-layer composite material weaving and large-scale production). To cope with high load torque requirements, the motor drive unit 1 can use a high-power servo motor and be equipped with a liquid cooling system to ensure heat dissipation efficiency during continuous operation. In terms of control strategy, the dual-motor system can adopt a master-slave synchronous control mode based on real-time load feedback. The main controller monitors the output speed and phase of the two motors in real time through an encoder and executes dynamic torque compensation and differential correction algorithms to ensure that the drive of the two active gears 3 can still maintain precise synchronization when the load fluctuates, effectively suppressing gear meshing impact. To further improve system reliability, redundant drive configuration can be set. The corner wheel 8 can be made of high-strength alloy steel through forging and tempering, and its working surface can be subjected to hardening processes such as laser quenching or spraying tungsten carbide coating to improve wear resistance. To transmit greater torque, the dimensions of the corner wheel 8 and its connecting shaft can be proportionally enlarged. The gears can be made of high-grade gear steel and processed by carburizing, quenching, and grinding to achieve high tooth surface hardness, high tooth core toughness, and higher tooth profile accuracy, thereby reducing meshing impact and noise. In this embodiment, the system's scalability is still achieved by linearly adding or removing rows of auxiliary gears 4 and their corresponding angular wheel motion units 5. Simultaneously, users can select standard performance or high-performance angular wheel modules as described in this embodiment, depending on load requirements. This independent optimization and expansion method of "performance modules" and "scalability modules" fully demonstrates the flexibility of the invention design.

Claims

1. A transmission device for a modular weaving apparatus, characterized in that, It includes multiple angular wheel motion units (5), a gear transmission unit (7), several shims (12) located below the gear transmission unit (7), and a motor drive unit (1) connected to the gear transmission unit (7); the gear transmission unit (7) includes a motor gear (6), an adjustable gear (2) meshing with the motor gear (6), a driving gear (3) coaxially arranged with the adjustable gear (2), and multiple auxiliary gears (4) meshing with the driving gear (3); the motor drive unit (1), motor gear The wheel (6), adjustable gear (2) and driving gear (3) are symmetrically distributed along the same axis of symmetry; multiple auxiliary gears (4) are arranged in a row along a straight line and mesh with each other. The two ends of the row of auxiliary gears (4) mesh with the driving gears (3) on both sides of the axis of symmetry, and the auxiliary gears (4) and driving gears (3) are coaxially arranged with the corner wheel motion unit (5); the corner wheel motion unit (5) is connected to the auxiliary gears (4); the shim (12) is located below the axial mounting surface of the adjustable gear (2) and / or the auxiliary gears (4).

2. The transmission device of the modular weaving apparatus according to claim 1, characterized in that, The motor drive unit (1) has two units, which operate synchronously.

3. The transmission device of the modular weaving apparatus according to claim 1, characterized in that, The motor gear (6), adjustable gear (2) and drive gear (3) are each provided in twos.

4. The transmission device of the modular weaving apparatus according to claim 1, characterized in that, The adjustable gear (2) is a helical cylindrical gear, and the driving gear (3) and the auxiliary gear (4) are both straight bevel gears.

5. The transmission device of the modular weaving apparatus according to claim 1, characterized in that, The adjustable gear (2), the driving gear (3), and the auxiliary gear (4) have the same module.

6. The transmission device of the modular weaving apparatus according to claim 1, characterized in that, The single corner wheel motion unit (5) includes a corner wheel (8) and a nylon anti-collision block (9); the corner wheel (8) has a toothed disc at the top, and the nylon anti-collision block (9) is embedded in the toothed groove.

7. The transmission device of the modular weaving apparatus according to claim 1, characterized in that, The angular wheel motion unit (5) has a 0° core tube (10) on its central shaft, and the 0° core tube (10) passes through the center of the angular wheel (8).

8. The transmission device of the modular weaving apparatus according to claim 7, characterized in that, The 0° core tube (10) is provided with yarn guide ceramic eyes (11) at both ends, and the 0° core tube (10) is made of carbon steel.

9. The transmission device of the modular weaving apparatus according to claim 1, characterized in that, The adjustable gear (2), the driving gear (3) and the auxiliary gear (4) are all made of steel that has undergone quenching and tempering treatment.

10. The transmission device of the modular weaving apparatus according to claim 4, characterized in that, The motor drive unit (1) includes a drive motor, which is a servo motor or a stepper motor.

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