A drive mechanism for a natural fiber jacquard loom

Abstract

The application relates to the technical field of textile machinery, in particular to a multi-pattern natural fiber jacquard loom transmission mechanism. The transmission mechanism comprises a rack main body, a driving device, a transmission assembly, a jacquard execution assembly and a damping protection assembly; the driving device comprises a driving motor and a motor mounting seat, and the output shaft end of the driving motor is provided with a first transmission gear; the transmission assembly comprises a transmission shaft, a second transmission gear meshed with the first transmission gear and a third transmission gear connected with a pattern control mechanism; the jacquard execution assembly comprises a jacquard box body, a plurality of jacquard needle bars arranged in a matrix mode and the pattern control mechanism, and the pattern control mechanism comprises a cam set connected with the third transmission gear and a transmission connecting rod connecting the cam set and the jacquard needle bar. The application can significantly improve the transmission precision and efficiency, reduce the vibration and noise during high-speed operation, reduce the friction and damage of natural fibers during the jacquard process, reduce the rate of broken warp and realize the synchronous and accurate control of multi-patterns.

Description

Technical Field

[0001] This invention relates to the field of textile machinery technology, and in particular to a transmission mechanism for a multi-pattern natural fiber jacquard loom. Background Technology

[0002] With the continuous development of the jacquard loom industry, various jacquard loom transmission mechanisms have been widely used. However, these existing technologies still have some problems in practical use. For example, traditional jacquard loom transmission mechanisms usually adopt mechanical transmission methods, whose transmission efficiency and accuracy are difficult to meet the weaving needs of complex patterns such as multiple patterns and high density. This leads to problems such as unstable fabric quality and low production efficiency in actual production.

[0003] A search revealed a power unit for a loom, with publication number CN113186630B and publication date April 14, 2023. This design includes a main motor, a high-speed shaft, an shedding transmission mechanism, and a slow-speed weft-seeking clutch, driving the jacquard yarn head via gear transmission. While this design can reduce the accumulation of transmission errors to some extent, it primarily addresses the power transmission problem of the loom and does not optimize for the specific transmission requirements of multi-pattern natural fiber jacquard looms. The transmission mechanism uses a traditional gear transmission method, which is relatively complex in structure and lacks sufficient transmission smoothness and synchronization when dealing with multi-pattern jacquard weaves, making it difficult to meet the specific requirements of natural fiber jacquard looms for multi-pattern, high-precision transmission.

[0004] A search revealed a knife-lifting transmission mechanism for an electronic jacquard loom, with publication number CN102230250B and publication date August 21, 2013. This design includes a knife lifter at the lower end of the frame, several needle-lifting arms on both sides of the frame, connecting rods, and a transmission shaft. The knife lifter is driven by a drive sprocket, an eccentric driven sprocket, and an eccentric gear, forming a "scissor-shaped" warp opening. While this design achieves basic knife-lifting transmission, its eccentric sprocket and gear transmission method results in a long transmission path and numerous transmission components for multi-pattern natural fiber jacquard looms, leading to low transmission efficiency and potential vibration and noise at high speeds. Furthermore, this design is primarily applicable to electronic jacquard looms and fails to adequately consider the special requirements of natural fiber materials for the transmission mechanism, such as fiber protection and reducing warp breakage.

[0005] The aforementioned problems indicate that the traditional transmission mechanisms of jacquard looms currently on the market are insufficient to effectively meet the demands of multi-pattern natural fiber jacquard looms for high precision, high stability, and low warp breakage rates. Therefore, this invention provides a transmission mechanism for multi-pattern natural fiber jacquard looms to overcome these shortcomings and offer a transmission solution more suitable for processing natural fiber materials. Summary of the Invention

[0006] The purpose of this invention is to provide a transmission mechanism for a multi-pattern natural fiber jacquard loom, in order to solve the problems mentioned in the background art, such as insufficient transmission accuracy, low transmission efficiency, poor transmission stability and synchronization, easy vibration and noise during high-speed operation, and insufficient consideration of the protection of natural fiber materials.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a transmission mechanism for a multi-pattern natural fiber jacquard loom, comprising a frame body, a drive device, a transmission component, a jacquard execution component, and a shock-absorbing and protective component. The drive device is disposed on one side of the frame body, and the output end of the drive device is connected to the jacquard execution component through the transmission component. The shock-absorbing and protective component is disposed between the transmission component and the frame body.

[0008] The drive device includes a drive motor and a motor mounting base. The drive motor is fixedly mounted on the motor mounting base, and the motor mounting base is fixedly connected to the frame body. A first transmission gear is provided at the end of the output shaft of the drive motor.

[0009] The transmission assembly includes a transmission shaft, a second transmission gear, and a third transmission gear. The transmission shaft is movably mounted on the frame body via a bearing seat. The second transmission gear is fixedly sleeved on one end of the transmission shaft and meshes with the first transmission gear. The third transmission gear is fixedly sleeved on the other end of the transmission shaft.

[0010] The jacquard execution assembly includes a jacquard box, a jacquard needle bar, and a pattern control mechanism. The jacquard box is fixedly installed on the main frame. The jacquard needle bar is movably inserted into the jacquard box. The pattern control mechanism is located at the top of the jacquard box and connected to the jacquard needle bar. The third transmission gear is fixedly connected to the input end of the pattern control mechanism.

[0011] Preferably, the pattern control mechanism includes a control box, a cam assembly, and transmission links. The control box is fixedly installed on the top of the jacquard box. The cam assembly is disposed inside the control box and fixedly connected to the output end of the third transmission gear. One end of each of the multiple transmission links is connected to the outer edge of the cam assembly, and the other end is connected to the corresponding jacquard needle rod.

[0012] Preferably, there are multiple jacquard needle rods arranged in a matrix, with each jacquard needle rod corresponding to a different flower pattern position. The number of cam groups is adapted to the number of jacquard needle rods, and each cam group drives the corresponding jacquard needle rod to move up and down through a corresponding transmission link.

[0013] Preferably, the shock absorption and protection assembly includes a shock absorption mounting plate, a shock absorption spring, and a protective cover. The shock absorption mounting plate is disposed between the drive shaft and the bearing housing. The shock absorption spring is disposed between the shock absorption mounting plate and the bearing housing and is sleeved on the outside of the drive shaft. The protective cover is fixedly installed on the frame body and covers the outside of the transmission assembly.

[0014] Preferably, the shock-absorbing mounting plate includes an upper mounting plate and a lower mounting plate, and a shock-absorbing chamber is formed between the upper mounting plate and the lower mounting plate. The shock-absorbing spring is disposed in the shock-absorbing chamber and its two ends are respectively connected to the upper mounting plate and the lower mounting plate.

[0015] Preferably, the inner wall of the protective cover is provided with a sound-absorbing material layer, which is made of porous sound-absorbing material.

[0016] Preferably, the frame body is provided with a fiber guiding channel, which is located below the jacquard execution component and communicates with the space below the jacquard needle bar. The inner wall of the fiber guiding channel is provided with a flexible protective layer.

[0017] Preferably, the flexible protective layer is made of natural fiber protective material, and the thickness of the flexible protective layer is 1 mm to 3 mm.

[0018] Preferably, a heat sink is provided between the drive motor and the motor mounting base, and the heat sink is disposed on the housing of the drive motor and is distributed in a fin-like shape.

[0019] Preferably, the tooth ratio between the first transmission gear and the second transmission gear is 1:2 to 1:4, and the tooth ratio between the second transmission gear and the third transmission gear is 1:1 to 1:2.

[0020] Preferably, the bearing housing includes a bearing housing and a rolling bearing, the rolling bearing being disposed inside the bearing housing and sleeved on the drive shaft, and the bearing housing being fixedly connected to the frame body.

[0021] Preferably, the inner walls on both sides of the jacquard box are provided with guide rail grooves, and the two sides of the jacquard needle rod are provided with guide rail protrusions that are adapted to the guide rail grooves. The jacquard needle rod can slide up and down through the cooperation of the guide rail protrusions and the guide rail grooves.

[0022] Preferably, the pattern control mechanism further includes a position sensor, which is disposed in the control box and corresponds to the position of the cam group, for detecting the real-time position of the cam group and transmitting the signal to the control system.

[0023] Preferably, a support base is provided at the bottom of the frame body, and a leveling device is provided between the support base and the frame body for adjusting the levelness of the frame body.

[0024] The beneficial effects of this invention are as follows: by setting up a coordinated connection between the driving device, transmission component, and jacquard execution component, precise driving of the jacquard needle bar is achieved, improving transmission accuracy and efficiency; by setting up a shock-absorbing and protective component, vibration and noise during high-speed operation are effectively reduced, improving transmission stability; by setting up a fiber guiding channel and a flexible protective layer, friction and damage to natural fibers during the jacquard process are reduced, lowering the warp breakage rate; by setting up a pattern control mechanism and a corresponding connection between the pattern control mechanism and the jacquard needle bar, synchronous control of multiple patterns is achieved, improving synchronization. Attached Figure Description

[0025] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the outer structure of the rolling bearing of the present invention; Figure 3 This is a schematic diagram of the outer structure of the sound-absorbing material layer of the present invention; Figure 4 This is a schematic diagram of the outer structure of the motor mounting base of the present invention; Explanation of reference numerals in the attached figures: 1. Main frame; 2. Drive unit; 3. Transmission assembly; 4. Jacquard actuation assembly; 5. Shock absorption and protection assembly; 6. Drive motor; 7. Motor mounting base; 8. First transmission gear; 9. Transmission shaft; 10. Second transmission gear; 11. Third transmission gear; 12. Jacquard box; 13. Jacquard needle bar; 14. Pattern control mechanism; 15. Control box; 16. Cam assembly; 17. Transmission connecting rod; 18. Shock absorption mounting plate; 19. Shock absorption spring; 20. Protective cover; 21. Upper mounting plate; 22. Lower mounting plate; 23. Shock absorption chamber; 24. Sound-absorbing material layer; 25. Fiber guide channel; 26. Flexible protective layer; 27. Heat sink; 28. Bearing seat; 29. ​​Rolling bearing; 30. Support base. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Specific implementation examples are given below.

[0028] See Figures 1-4A transmission mechanism for a multi-pattern natural fiber jacquard loom includes a frame body 1, a drive unit 2, a transmission assembly 3, a jacquard execution assembly 4, and a shock-absorbing and protective assembly 5. The frame body 1 serves as the supporting skeleton of the entire transmission mechanism, providing the mounting base and spatial layout for each component. The drive unit 2 is located on one side of the frame body 1 and is responsible for providing the power source. The transmission assembly 3 connects the drive unit 2 and the jacquard execution assembly 4, and is responsible for transmitting the power output from the drive unit 2 to the jacquard execution assembly 4. The shock-absorbing and protective assembly 5 is located between the transmission assembly 3 and the frame body 1 to reduce vibration during transmission and protect the transmission assembly 3.

[0029] A support base 30 is provided at the bottom of the main frame 1. A leveling device is provided between the support base 30 and the main frame 1. This leveling device can adopt a threaded adjustment structure or a hydraulic adjustment structure to adjust the levelness of the main frame 1, ensuring that the entire transmission mechanism is in a horizontal state during installation, thereby guaranteeing transmission accuracy. The support base 30 is made of metal material, which has sufficient strength and stability to withstand the weight of the entire transmission mechanism and the forces during operation.

[0030] The drive unit 2 includes a drive motor 6 and a motor mounting base 7. The drive motor 6 is fixedly mounted on the motor mounting base 7, and the output shaft of the drive motor 6 is arranged in a horizontal direction. A first transmission gear 8 is provided at the end of the output shaft of the drive motor 6. The motor mounting base 7 is fixedly connected to the frame body 1. The motor mounting base 7 is welded from steel plate and has sufficient rigidity and strength to ensure the stability of the drive motor 6 during operation. A heat sink 27 is provided between the drive motor 6 and the motor mounting base 7. The heat sink 27 is arranged on the outer shell of the drive motor 6 and is distributed in a fin-like shape. The heat sink 27 is made of aluminum alloy material. By increasing the heat dissipation area, the heat dissipation effect of the drive motor 6 is improved, preventing the drive motor 6 from being affected by overheating or damaged during long-term operation.

[0031] The transmission assembly 3 includes a transmission shaft 9, a second transmission gear 10, and a third transmission gear 11. The transmission shaft 9 is movably mounted on the frame body 1 via a bearing housing 28, allowing it to rotate freely around its axis. The bearing housing 28 includes a bearing housing and a rolling bearing 29. The rolling bearing 29 is housed within the bearing housing and fitted onto the transmission shaft 9. The bearing housing is fixedly connected to the frame body 1. The rolling bearing 29 is a deep groove ball bearing or a cylindrical roller bearing, capable of withstanding radial loads and a certain axial load, ensuring smooth rotation of the transmission shaft 9.

[0032] The second transmission gear 10 is fixedly sleeved on one end of the transmission shaft 9 and meshes with the first transmission gear 8. The gear ratio between the first transmission gear 8 and the second transmission gear 10 is 1:2 to 1:4. In this specific embodiment, preferably, the first transmission gear 8 has 20 teeth and the second transmission gear 10 has 60 teeth, with a gear ratio of 1:3. This can achieve the effect of speed reduction and torque increase, allowing the transmission shaft 9 to obtain greater torque. The third transmission gear 11 is fixedly sleeved on the other end of the transmission shaft 9. The gear ratio between the second transmission gear 10 and the third transmission gear 11 is 1:1 to 1:2. In this specific embodiment, preferably, the third transmission gear 11 has 40 teeth, and the gear ratio between the second transmission gear 10 and the third transmission gear 11 is 3:2. This allows for further adjustment of the transmission ratio, enabling the pattern control mechanism 14 to obtain a suitable speed.

[0033] Both ends of the drive shaft 9 are supported in bearing housings 28 by rolling bearings 29. The inner ring of the rolling bearing 29 is interference-fitted with the drive shaft 9, and the outer ring is interference-fitted with the bearing housing 28, ensuring that the drive shaft 9 will not undergo radial displacement during rotation. The drive shaft 9 is made of alloy steel and has undergone heat treatment, giving it high strength and wear resistance, and enabling it to withstand long-term transmission loads.

[0034] The jacquard actuation component 4 includes a jacquard box 12, jacquard needle rods 13, and a pattern control mechanism 14. The jacquard box 12 is fixedly mounted on the main frame 1 and is made of cast iron, providing good rigidity and stability. Multiple jacquard needle rods 13 are movably inserted into the jacquard box 12, arranged in a matrix, with each rod corresponding to a different pattern position. In this specific embodiment, the number of jacquard needle rods 13 can be 64, 128, or 256, depending on the complexity of the pattern. Guide rail grooves are provided on both inner walls of the jacquard box 12, and guide rail protrusions that match the guide rail grooves are provided on both sides of the jacquard needle rods 13. The jacquard needle rods 13 slide up and down through the cooperation of the guide rail protrusions and guide rail grooves. This guide rail structure ensures the straightness and stability of the jacquard needle rods 13 during their up-and-down movement, reducing shaking and jamming.

[0035] The pattern control mechanism 14 is located on the top of the jacquard box 12 and connected to the jacquard needle rod 13. The pattern control mechanism 14 includes a control box 15, a cam assembly 16, and a transmission link 17. The control box 15 is fixedly installed on the top of the jacquard box 12 and is made of welded steel plate, providing good sealing and strength. The cam assembly 16 is located inside the control box 15 and is fixedly connected to the output end of the third transmission gear 11. The number of cam assemblies 16 is matched with the number of jacquard needle rods 13, and each cam assembly 16 drives the corresponding jacquard needle rod 13 to move up and down through the corresponding transmission link 17.

[0036] Specifically, the output end of the third transmission gear 11 is fixedly connected to the central shaft of the cam assembly 16 via a coupling. When the third transmission gear 11 rotates, it drives the cam assembly 16 to rotate synchronously. Each cam assembly 16 has multiple cam profiles on its outer edge. When the cam assembly 16 rotates, the cam profiles push one end of the transmission link 17 up and down. The other end of the transmission link 17 is connected to the corresponding jacquard needle rod 13, thereby driving the jacquard needle rod 13 to move up and down. The transmission link 17 uses a lever principle to convert the rotational motion of the cam assembly 16 into the reciprocating motion of the jacquard needle rod 13.

[0037] The pattern control mechanism 14 also includes a position sensor, which is located inside the control housing 15 and corresponds to the position of the cam assembly 16. The position sensor is used to detect the real-time position of the cam assembly 16 and transmit the signal to the control system. The position sensor can be a photoelectric encoder or a magnetic induction sensor, capable of monitoring the rotation angle and position of the cam assembly 16 in real time, providing precise position feedback signals to the control system, and achieving precise control of the position of the jacquard needle bar 13.

[0038] The vibration damping and protection assembly 5 includes a vibration damping mounting plate 18, a vibration damping spring 19, and a protective cover 20. The vibration damping mounting plate 18 is disposed between the drive shaft 9 and the bearing housing 28. The vibration damping mounting plate 18 includes an upper mounting plate 21 and a lower mounting plate 22, with a vibration damping chamber 23 formed between the upper mounting plate 21 and the lower mounting plate 22. The vibration damping spring 19 is disposed within the vibration damping chamber 23, with both ends connected to the upper mounting plate 21 and the lower mounting plate 22, respectively. The vibration damping spring 19 is made of helical spring or rubber spring, possessing good elasticity and vibration damping performance, capable of absorbing vibration energy during transmission and reducing the transmission of vibration to the frame body 1.

[0039] The protective cover 20 is fixedly installed on the main frame 1 and covers the outside of the transmission component 3. The protective cover 20 is made of metal plate, which can prevent external factors such as dust and moisture from damaging the transmission component 3, and at the same time play a safety protection role to prevent personnel from accidentally touching rotating parts. The inner wall of the protective cover 20 is provided with a sound-absorbing material layer 24. The sound-absorbing material layer 24 is made of porous sound-absorbing material, such as glass fiber cotton, mineral wool board or polyester fiber sound-absorbing cotton, which can effectively absorb the noise generated during transmission and reduce the operating noise of the equipment.

[0040] A fiber guiding channel 25 is provided on the frame body 1. The fiber guiding channel 25 is located below the jacquard execution component 4 and communicates with the space below the jacquard needle bar 13. A flexible protective layer 26 is provided on the inner wall of the fiber guiding channel 25. The flexible protective layer 26 is made of natural fiber protective materials, such as wool felt, cotton fiber pads, or silicone protective layers, and its thickness is 1mm to 3mm. The fiber guiding channel 25 is used to guide the direction of natural fibers (cotton fibers, linen fibers, silk, etc.) during the jacquard process, preventing direct contact between the fibers and hard components that could cause damage. The flexible protective layer 26 reduces the friction of the fibers when passing through the fiber guiding channel 25, thus reducing the warp breakage rate.

[0041] A tensioning device is also installed inside the main frame 1. The tensioning device is used to tension the transmission chain or transmission belt to ensure the transmission efficiency of the transmission assembly 3. The tensioning device can adopt a spring tensioning wheel or a spiral tensioning structure, which can automatically maintain the tension force during the operation of the transmission assembly 3 to prevent transmission slippage.

[0042] The entire transmission mechanism operates as follows: After the control system issues a start signal, the drive motor 6 begins to run. The output shaft of the drive motor 6 drives the first transmission gear 8 to rotate. The first transmission gear 8 meshes with the second transmission gear 10, providing power to the transmission shaft 9. The rotation of the transmission shaft 9 drives the third transmission gear 11 to rotate, which in turn drives the cam assembly 16 to rotate via a coupling. When the cam assembly 16 rotates, the cam profile on its outer edge pushes the transmission connecting rod 17 up and down. The transmission connecting rod 17 drives the corresponding jacquard needle rod 13 up and down, thereby realizing the jacquard action.

[0043] During transmission, the vibration damping and protection assembly 5 plays a crucial role. The vibration damping system, composed of the vibration damping mounting plate 18 and the vibration damping spring 19, absorbs the vibration energy generated during transmission, reduces the transmission of vibration to the frame body 1, and improves transmission smoothness. The protective cover 20 and the sound-absorbing material layer 24 prevent external factors from damaging the transmission assembly 3 while reducing operating noise. The fiber guide channel 25 and the flexible protective layer 26 guide the direction of natural fibers, reduce friction between fibers and rigid components, protect the natural fiber material, and reduce the breakage rate.

[0044] The position sensor monitors the position of the cam assembly 16 in real time and transmits the position signal to the control system. The control system precisely controls the speed and direction of the drive motor 6 according to the position signal, thereby achieving precise control of the position of the jacquard needle bar 13 and ensuring the accuracy and consistency of the pattern.

[0045] The leveling device is used to adjust the levelness of the frame body 1, ensuring that the entire transmission mechanism is horizontal during installation. The heat sink 27 is used to improve the heat dissipation of the drive motor 6 and prevent it from overheating. The fit between the guide rail groove and the guide rail protrusion ensures the straightness and stability of the jacquard needle bar 13 during its up-and-down movement.

[0046] In this specific embodiment, the drive motor 6 can be a servo motor or a stepper motor, enabling precise speed and position control to meet the weaving needs of complex patterns such as multiple designs and high density. The transmission component 3 adopts a gear transmission method, which has high transmission efficiency and high transmission accuracy, meeting the requirements of high-precision transmission. The shock absorption and protection component 5 can effectively reduce vibration and noise during high-speed operation and improve transmission smoothness. The fiber guide channel 25 and the flexible protective layer 26 can protect the natural fiber material and reduce the warp breakage rate.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A transmission mechanism for a multi-pattern natural fiber jacquard loom, characterized in that, The machine includes a frame body (1), a drive device (2), a transmission assembly (3), a jacquard actuation assembly (4), and a shock-absorbing and protective assembly (5). The drive device (2) is located on one side of the frame body (1). The output end of the drive device (2) is connected to the jacquard actuation assembly (4) through the transmission assembly (3). The shock-absorbing and protective assembly (5) is located between the transmission assembly (3) and the frame body (1).

2. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 1, characterized in that, The drive device (2) includes a drive motor (6) and a motor mounting base (7). The drive motor (6) is fixedly mounted on the motor mounting base (7). The motor mounting base (7) is fixedly connected to the frame body (1). The output shaft end of the drive motor (6) is provided with a first transmission gear (8).

3. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 2, characterized in that, A heat sink (27) is provided between the drive motor (6) and the motor mounting base (7). The heat sink (27) is disposed on the outer shell of the drive motor (6) and is distributed in a fin-like shape.

4. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 1, characterized in that, The transmission assembly (3) includes a transmission shaft (9), a second transmission gear (10) and a third transmission gear (11). The transmission shaft (9) is movably mounted on the frame body (1) through a bearing seat (28). The second transmission gear (10) is fixedly sleeved on one end of the transmission shaft (9) and meshes with the first transmission gear (8). The third transmission gear (11) is fixedly sleeved on the other end of the transmission shaft (9).

5. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 4, characterized in that, The bearing housing (28) includes a bearing housing and a rolling bearing (29). The rolling bearing (29) is disposed inside the bearing housing and sleeved on the transmission shaft (9). The bearing housing is fixedly connected to the frame body (1).

6. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 1, characterized in that, The jacquard execution component (4) includes a jacquard box (12), a jacquard needle bar (13), and a pattern control mechanism (14). The jacquard box (12) is fixedly installed on the frame body (1). The jacquard needle bar (13) is movably inserted into the jacquard box (12). The pattern control mechanism (14) is located at the top of the jacquard box (12) and connected to the jacquard needle bar (13). The third transmission gear (11) is fixedly connected to the input end of the pattern control mechanism (14).

7. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 6, characterized in that, The pattern control mechanism (14) includes a control box (15), a cam group (16), and a transmission link (17). The control box (15) is fixedly installed on the top of the jacquard box (12). The cam group (16) is located inside the control box (15) and is fixedly connected to the output end of the third transmission gear (11). One end of each of the multiple transmission links (17) is connected to the outer edge of the cam group (16), and the other end is connected to the corresponding jacquard needle rod (13). There are multiple jacquard needle rods (13) arranged in a matrix. Each jacquard needle rod (13) corresponds to a different pattern position. The number of cam groups (16) is matched with the number of jacquard needle rods (13). Each cam group (16) drives the corresponding jacquard needle rod (13) to move up and down through the corresponding transmission link (17).

8. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 6, characterized in that, The inner walls of both sides of the jacquard box (12) are provided with guide rail grooves, and the two sides of the jacquard needle rod (13) are provided with guide rail protrusions that are adapted to the guide rail grooves. The jacquard needle rod (13) slides up and down through the cooperation of the guide rail protrusions and the guide rail grooves. The pattern control mechanism (14) also includes a position sensor. The position sensor is set in the control box (15) and is set in a position corresponding to the cam group (16). It is used to detect the real-time position of the cam group (16) and transmit the signal to the control system. The shock absorption and protection component (5) includes a shock absorption mounting plate (18), a shock absorption spring (19) and a protective cover (20). The shock absorption mounting plate (18) is set between the transmission shaft (9) and the bearing seat (28). The shock absorption spring (19) is set between the shock absorption mounting plate (18) and the bearing seat (28) and sleeved on the outside of the transmission shaft (9). The protective cover (20) is fixedly installed on the frame body (1) and covers the outside of the transmission component (3).

9. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 11, characterized in that, The shock-absorbing mounting plate (18) includes an upper mounting plate (21) and a lower mounting plate (22). A shock-absorbing chamber (23) is formed between the upper mounting plate (21) and the lower mounting plate (22). The shock-absorbing spring (19) is disposed in the shock-absorbing chamber (23) and its two ends are respectively connected to the upper mounting plate (21) and the lower mounting plate (22). The inner wall of the protective cover (20) is provided with a sound-absorbing material layer (24). The sound-absorbing material layer (24) is made of porous sound-absorbing material. A fiber guide channel (25) is provided on the frame body (1). The fiber guide channel (25) is located below the jacquard execution component (4) and communicates with the space below the jacquard needle bar (13). A flexible protective layer (26) is provided on the inner wall of the fiber guide channel (25). The flexible protective layer (26) is made of natural fiber protective material and the thickness of the flexible protective layer (26) is 1 mm to 3 mm.

10. The transmission mechanism of the multi-pattern natural fiber jacquard loom according to claim 1, characterized in that, The bottom of the frame body (1) is provided with a support base (30), and a leveling device is provided between the support base (30) and the frame body (1) for adjusting the levelness of the frame body (1); the tooth ratio of the first transmission gear (8) to the second transmission gear (10) is 1:2 to 1:4, and the tooth ratio of the second transmission gear (10) to the third transmission gear (11) is 1:1 to 1:2.

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