A shedding drive mechanism for a jacquard

Abstract

The utility model provides a jacquard's opening drive mechanism relates to textile machinery technical field. The utility model discloses a jacquard's opening drive mechanism, including left side plate, and one side top end of left side plate is fixedly connected with four connecting beams, and the other end of connecting beam is fixedly connected with right side plate, and both sides of left side plate and right side plate are rotatably connected with two eccentric wheels, and the eccentric wheel of both sides has the phase difference of degree. The utility model discloses a jacquard's opening drive mechanism, and left side plate and right side plate constitute stable frame through four connecting beams and provide support for integral mechanism, and the eccentric wheel rotatably connected with both sides can realize alternate motion because of 180 degrees phase difference, and drive mechanism provides power for eccentric wheel, makes it rotate, and the hook mechanism then converts the rotary motion of eccentric wheel into the lifting action of hook, and through the reverse motion of both sides eccentric wheel, drives the hook to alternate lifting, thereby controls the warp to form opening, provides the foundation for the formation of jacquard fabric.

Description

Technical Field

[0001] This utility model relates to the field of textile machinery technology, and in particular to an opening transmission mechanism for a jacquard machine. Background Technology

[0002] The existing jacquard machine's opening transmission mechanism frame mostly uses a single-sided support plate or a simple welded frame. The support plate is mostly made of ordinary low-carbon steel with a thickness of less than 10mm, and the connecting beams have small cross-sectional dimensions and only 2-3 beams. This structure is prone to deformation of more than 0.3mm / m during high-speed operation, causing the eccentric wheel installation reference to shift, the phase difference between the two eccentric wheels to fluctuate by more than ±5°, poor warp opening consistency, and misalignment of patterns in the jacquard fabric, resulting in a defect rate as high as 8%-12%. At the same time, the connection between the traditional frame and the eccentric wheel lacks a stable support structure, and is prone to loosening after long-term stress, requiring frequent machine shutdowns for maintenance. The monthly maintenance time accumulates to more than 8 hours, which seriously affects production efficiency.

[0003] Traditional jacquard loom drive mechanisms suffer from significant defects in power transmission: Synchronizing pulleys are often made of rubber, resulting in large pitch circle diameter errors and slippage during belt drive, causing shaft speed fluctuations exceeding ±10 r / min; bearing lubrication relies on manual, periodic grease application, and insufficient lubrication leads to radial runout of over 0.05 mm, unstable meshing clearance between the drive wheel and eccentric wheel, and periodic impact noise (exceeding 90 dB); furthermore, the transmission ratio between the drive motor and shaft is poorly designed, resulting in large eccentric wheel speed fluctuations, uneven hook lifting speeds, and warp thread stress fluctuations exceeding ±20 N, easily causing warp thread breakage. This results in 15-20 broken ends per thousand spindles, increasing raw material losses and manual splicing costs. Summary of the Invention

[0004] The present invention aims to solve the technical problems existing in the prior art and provide an opening transmission mechanism for a jacquard machine.

[0005] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: an opening transmission mechanism for a jacquard machine, including a left side plate, four connecting beams are fixedly connected to one top side of the left side plate, and a right side plate is fixedly connected to the other end of the connecting beams.

[0006] Both sides of the left and right plates are rotatably connected to two eccentric wheels, and the two eccentric wheels have a phase difference of degrees.

[0007] A drive mechanism is provided between the eccentric wheels, and a hook mechanism is provided on the eccentric wheels.

[0008] Preferably, the drive mechanism includes a seated bearing, which is fixedly connected to the inner side of the left side plate and the right side plate;

[0009] A rotating shaft is rotatably connected to the bearing with a mounting seat. The two sides of the rotating shaft pass through the left side plate and the right side plate and are fixedly connected to the drive wheel.

[0010] A timing pulley is fixedly connected to one end of the rotating shaft that passes through the left side plate.

[0011] Preferably, a drive motor is fixedly connected to the outer side of the left side plate, and a synchronous pulley is fixedly connected to the output end of the drive motor;

[0012] A belt is connected to the first synchronous pulley for transmission, and the belt is rotatably connected to the second synchronous pulley.

[0013] Preferably, the drive wheel is meshed with the eccentric wheel.

[0014] Preferably, the lifting mechanism includes a support plate, which is rotatably connected to the output end of the eccentric wheel. A first lifting hook is provided on the outer side of the left and right side plates, and a support is fixedly connected to the first lifting hook.

[0015] The support is rotatably connected to the support plate on the outer side of the left and right side plates via the eccentric wheel.

[0016] Preferably, the inner sides of the left and right side plates are provided with a second hook, and a support is fixedly connected to the second hook;

[0017] The support is rotatably connected to the support plate on the inner side of the eccentric wheel of the left and right side plates.

[0018] The beneficial effects of this utility model are:

[0019] 1. The opening transmission mechanism of this jacquard machine, in which the Y90L-4 drive motor starts, outputs a stable 1440 r / min speed to drive synchronous pulley one to rotate. Synchronous pulley one transmits power smoothly to synchronous pulley two via a belt. Due to the different pitch circle diameters of the two synchronous pulleys, a 5:3 transmission ratio is formed. After reduction, the 25mm diameter rotating shaft is driven to rotate at 864 r / min under the support of a UCP205 bearing. The good lubrication and support of the bearing ensure that the radial runout of the rotating shaft is ≤0.02mm during operation. When the rotating shaft rotates, the drive wheels on both sides rotate synchronously. Through precise meshing with the eccentric wheel, the power is transmitted to the eccentric wheel, causing the eccentric wheel to rotate at 144 r / min. Throughout the entire driving process, all components are closely coordinated, and the power transmission efficiency reaches over 92%, providing a reliable guarantee for the stable operation of the eccentric wheel.

[0020] 2. The shedding transmission mechanism of this jacquard machine features an output end support plate that swings at an angle of ±15° along the eccentric trajectory when the eccentric wheel rotates. The 65Mn support plate possesses excellent elasticity and strength, ensuring it remains resistant to deformation over long-term swinging. Through its rotational cooperation with the support base, the support plate smoothly converts the swinging motion into the lifting motion of the first and second hooks. The zinc alloy material of the support base is self-lubricating, reducing frictional resistance during rotation. Due to the 180-degree phase difference between the two eccentric wheels, the outer first hook and the inner second hook alternately lift and lower, with a stable lifting speed of 0.3 m / s. The straightness error of the hooks during lifting and lowering is ≤0.1 mm. The hooks pull the warp threads up and down via a hook structure. Because of the stable movement rhythm, the resulting shedding size is uniform, with an opening time interval of 0.4 s. This provides precise warp thread shedding conditions for weaving complex patterns on the jacquard machine, effectively ensuring the quality of the jacquard fabric. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the opening transmission mechanism of a jacquard machine according to the present invention;

[0022] Figure 2 This is a top view schematic diagram of the opening transmission mechanism of a jacquard machine according to the present invention;

[0023] Figure 3 This is a cross-sectional schematic diagram of the opening transmission mechanism of a jacquard machine according to the present invention;

[0024] Figure 4 This is a schematic diagram of the bottom structure of the opening transmission mechanism of a jacquard machine according to the present invention.

[0025] Reference numerals: 1. Left side plate; 2. Right side plate; 3. Connecting beam; 4. Bearing with seat; 5. Rotating shaft; 6. Eccentric wheel; 7. Drive wheel; 8. Drive motor; 9. Synchronous pulley one; 10. Synchronous pulley two; 11. Belt; 12. Support plate; 13. Support; 14. First lifting hook; 15. Second lifting hook. Detailed Implementation

[0026] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0027] Example: An opening transmission mechanism for a jacquard machine, such as Figure 1-4 As shown in the figure:

[0028] An opening transmission mechanism for a jacquard machine includes a left side plate 1, four connecting beams 3 are fixedly connected to the top of one side of the left side plate 1, and a right side plate 2 is fixedly connected to the other end of the connecting beams 3.

[0029] Both sides of the left side plate 1 and the right side plate 2 are rotatably connected to two eccentric wheels 6, and the two eccentric wheels 6 have a phase difference of 180 degrees.

[0030] A drive mechanism is provided between the eccentric wheels 6, and a hook mechanism is provided on the eccentric wheels 6;

[0031] The left side plate 1 and right side plate 2, made of Q235 material and 15mm thick, are connected by four connecting beams 3 of model HT300 with a cross-sectional size of 30×30mm to form a stable frame. The rigid support of the connecting beams 3 ensures that the deformation of the frame is ≤0.1mm / m when under stress. The eccentric wheels 6 connected on both sides can achieve alternating lifting and lowering motion due to the 180-degree phase difference. The drive mechanism provides power to the eccentric wheels 6, and the hook mechanism converts the rotational motion of the eccentric wheels 6 into the linear lifting and lowering of the hook. Through the reverse motion of the eccentric wheels 6 on both sides, the hook is driven to lift and lower alternately, thereby controlling the opening of the warp line to be adjustable.

[0032] Furthermore, the drive mechanism includes a seated bearing 4, which is fixedly connected to the inner side of the left side plate 1 and the right side plate 2;

[0033] A rotating shaft 5 is rotatably connected to the bearing 4 with a seat. The two sides of the rotating shaft 5 pass through the left side plate 1 and the right side plate 2 and are fixedly connected to the drive wheel 7.

[0034] A synchronous pulley 10 is fixedly connected to one end of the rotating shaft 5 that passes through the left side plate 1;

[0035] A drive motor 8 is fixedly connected to the outer side of the left side plate 1, and a synchronous pulley 9 is fixedly connected to the output end of the drive motor 8.

[0036] A belt 11 is connected to the synchronous pulley 9 for transmission, and the belt 11 is rotatably connected to the synchronous pulley 10.

[0037] Drive wheel 7 is engaged with eccentric wheel 6;

[0038] After the drive motor 8 of model Y90L-4 starts, its output end stably drives synchronous pulley 9 to rotate at a speed of 1440 r / min. Synchronous pulley 9 smoothly transmits power to synchronous pulley 10 through belt 11. Due to the different pitch circle diameters of the two synchronous pulleys, a transmission ratio of 5:3 is formed. After reduction, it drives the 25mm diameter rotating shaft 5 to rotate at a speed of 864 r / min under the support of the UCP205 seated bearing 4. The good lubrication and support of the seated bearing 4 ensures that the radial runout of the rotating shaft 5 is ≤0.02mm when it is running. When the rotating shaft 5 rotates, the drive wheels 7 on both sides rotate synchronously. Through precise meshing with the eccentric wheel 6, the power is transmitted to the eccentric wheel 6, causing the eccentric wheel 6 to rotate at a speed of 144 r / min. In the entire driving process, the components are closely matched, and the power transmission efficiency reaches more than 92%, providing a reliable guarantee for the stable operation of the eccentric wheel 6.

[0039] Furthermore, the lifting mechanism includes a support plate 12, which is rotatably connected to the output end of the eccentric wheel 6. A first lifting hook 14 is provided on the outer side of the left side plate 1 and the right side plate 2, and a support 13 is fixedly connected to the first lifting hook 14.

[0040] The support 13 is rotatably connected to the support plate 12 on the outer side of the eccentric wheel 6 of the left side plate 1 and the right side plate 2;

[0041] The inner sides of the left side plate 1 and the right side plate 2 are provided with a second hook 15, and a support 13 is fixedly connected to the second hook 15.

[0042] The support 13 is rotatably connected to the support plate 12 on the inner side of the eccentric wheel 6 of the left side plate 1 and the right side plate 2;

[0043] When the eccentric wheel 6 rotates, the support plate 12 at its output end swings at an angle of ±15° along the eccentric trajectory. The support plate 12, made of 65Mn material, has good elasticity and strength, ensuring that it is not easily deformed during long-term swinging. The support plate 12, through its rotational cooperation with the support 13, smoothly transforms the swinging motion into the lifting motion of the first hook 14 and the second hook 15. The zinc alloy material of the support 13 has self-lubricating properties, reducing frictional resistance during rotation. Due to the 180-degree phase difference between the two eccentric wheels 6, the outer first hook 14 and the inner second hook 15 alternately lift and lower, with the lifting speed stable at 0.3m / s. During the lifting process, the straightness error of the hook is ≤0.1mm. The hook pulls the warp threads up and down through the hook structure. Because the movement rhythm is stable, the size of the opening is uniform, and the opening time interval is maintained at 0.4s, providing precise warp opening conditions for the jacquard machine to weave complex patterns, effectively ensuring the quality of the jacquard fabric.

[0044] Working principle: After the drive motor 8 of model Y90L-4 starts, its output end stably drives the synchronous pulley 9 to rotate at a speed of 1440 r / min. The synchronous pulley 9 smoothly transmits power to the synchronous pulley 10 through the belt 11. Due to the different pitch circle diameters of the two synchronous pulleys, a transmission ratio of 5:3 is formed. After reduction, the 25mm diameter rotating shaft 5 is driven to rotate at a speed of 864 r / min under the support of the UCP205 bearing 4. The good lubrication and support of the bearing 4 ensures that the radial runout of the rotating shaft 5 is ≤0.02mm when it is running. When the rotating shaft 5 rotates, the drive wheels 7 on both sides rotate synchronously. Through precise meshing with the eccentric wheel 6, the power is transmitted to the eccentric wheel 6, causing the eccentric wheel 6 to rotate at a speed of 144 r / min. In the entire driving process, the components are closely matched, and the power transmission efficiency reaches more than 92%, providing a reliable guarantee for the stable operation of the eccentric wheel 6.

[0045] When the eccentric wheel 6 rotates, the support plate 12 at its output end swings at an angle of ±15° along the eccentric trajectory. The support plate 12, made of 65Mn material, has good elasticity and strength, ensuring that it is not easily deformed during long-term swinging. The support plate 12, through its rotational cooperation with the support 13, smoothly transforms the swinging motion into the lifting motion of the first hook 14 and the second hook 15. The zinc alloy material of the support 13 has self-lubricating properties, reducing frictional resistance during rotation. Due to the 180-degree phase difference between the two eccentric wheels 6, the outer first hook 14 and the inner second hook 15 alternately lift and lower, with the lifting speed stable at 0.3m / s. During the lifting process, the straightness error of the hook is ≤0.1mm. The hook pulls the warp threads up and down through the hook structure. Because the movement rhythm is stable, the size of the opening is uniform, and the opening time interval is maintained at 0.4s, providing precise warp opening conditions for the jacquard machine to weave complex patterns, effectively ensuring the quality of the jacquard fabric.

[0046] Structural Description:

[0047] Left side plate 1 and right side plate 2: Both left side plate 1 and right side plate 2 are made of Q235 material with a thickness of 15mm. The advantage of this design is that Q235 material has good strength and toughness, which can provide a solid support foundation for the entire mechanism. Compared with the traditional support plate with a thickness of less than 10mm, the 15mm thickness greatly enhances its rigidity, making it less prone to deformation when bearing the forces of various components. This ensures the accurate installation position of components such as the eccentric wheel 6, and provides reliable support for the stable operation of the mechanism.

[0048] Connecting beam 3: Connecting beam 3 is made of HT300 material with a cross-sectional size of 30×30mm. There are four beams, which are evenly distributed between the left side plate 1 and the right side plate 2. The advantage of this arrangement is that HT300 material has high strength and wear resistance and can withstand large loads. The four evenly distributed connecting beams can firmly connect the left side plate 1 and the right side plate 2, distributing the force on the frame. Compared with the traditional 2-3 small cross-section connecting beams, this improves the overall rigidity of the frame, keeps the deformation during high-speed operation within 0.1mm / m, avoids the offset of the eccentric wheel 6 installation reference, and reduces the loosening problem after long-term use.

[0049] Mounted bearing 4: Mounted bearing 4 is a UCP205 model, which is fixedly connected to the inner side of the left side plate 1 and the right side plate 2, and is rotatably connected to the rotating shaft 5. The advantage of this setting is that the UCP205 model mounted bearing has its own lubrication structure, eliminating the need for frequent manual grease addition and reducing maintenance workload. Its inner diameter is compatible with the rotating shaft 5, which can provide good support for the rotating shaft 5, ensuring smooth operation of the rotating shaft 5 and controlling the radial runout of the rotating shaft to below 0.02mm, laying the foundation for stable power transmission.

[0050] Rotating shaft 5: The rotating shaft 5 is made of 40Cr material and has a diameter of 25mm. It passes through the left side plate 1 and the right side plate 2 on both sides and is fixedly connected to the drive wheel 7. The advantage of this setting is that the 40Cr material has high strength and hardness after quenching and tempering, and can withstand a large torque. The 25mm diameter ensures that the rotating shaft is not prone to bending and deformation when transmitting power, and can stably transmit power to the drive wheel 7, ensuring that the meshing transmission between the drive wheel 7 and the eccentric wheel 6 is stable and reliable.

[0051] Eccentric wheel 6: Eccentric wheel 6 is made of 45# steel, with a diameter of 80mm and an eccentricity of 10mm. It is rotatably connected to both sides of the left side plate 1 and the right side plate 2, and the two eccentric wheels 6 have a 180-degree phase difference. The advantage of this setting is that 45# steel has high strength and can meet the usage requirements of eccentric wheels after processing. The 180-degree phase difference allows the two eccentric wheels to achieve alternating lifting and lowering movements when rotating, with a maximum lifting stroke of 20mm. This can accurately control the warp threads to form openings and meet the opening requirements of different jacquard fabrics.

[0052] Drive wheel 7: Drive wheel 7 has a module of 2 and 30 teeth. It is fixedly connected to both sides of the rotating shaft 5 and meshes with the eccentric wheel 6. The advantage of this configuration is that when the drive wheel with this module and number of teeth meshes with the eccentric wheel 6, the transmission ratio is stable, which can efficiently transmit the power of the rotating shaft 5 to the eccentric wheel 6 and reduce power loss. At the same time, the meshing transmission method provides precise transmission, avoids slippage and other problems, ensures the stable rotation speed of the eccentric wheel 6, and provides power for the stable operation of the hook mechanism.

[0053] Drive motor 8: The drive motor 8 is a Y90L-4 model with a power of 1.5kW. It is fixedly connected to the outside of the left side plate 1, and its output end is fixedly connected to the synchronous pulley 9. The advantage of this setting is that the Y90L-4 model motor has stable performance, and its 1.5kW power can provide sufficient power for the entire drive mechanism. Its output speed is stable, and the power can be smoothly transmitted through the synchronous pulley 9 to ensure the stable operation of subsequent transmission links.

[0054] Synchronous pulley 9 and synchronous pulley 10: Both synchronous pulley 9 and synchronous pulley 10 are XL type. Synchronous pulley 9 has a pitch circle diameter of 30mm, and synchronous pulley 10 has a pitch circle diameter of 50mm. Synchronous pulley 9 is fixedly connected to the output end of the drive motor 8, and synchronous pulley 10 is fixedly connected to the end of the rotating shaft 5 that passes through the left side plate 1. The advantage of this setting is that the XL type synchronous pulley has high pitch circle diameter accuracy, and the two work together to form a reasonable transmission ratio (5:3), which can reasonably reduce the speed of the drive motor and transmit it to the rotating shaft 5. At the same time, it can avoid the slippage problem of traditional rubber synchronous pulleys, and keep the speed fluctuation of the rotating shaft 5 within ±1r / min.

[0055] Belt 11: Belt 11 is of type XL, with a length of 500mm, and is connected between synchronous pulley 9 and synchronous pulley 10. The advantage of this setting is that the XL type belt has good matching with synchronous pulleys of the same type, which can ensure the stability of power transmission and reduce energy loss during transmission. The 500mm length is suitable for the installation distance of synchronous pulley 9 and synchronous pulley 10, so that the belt tension is appropriate, avoids slippage, and ensures that power is smoothly transmitted from synchronous pulley 9 to synchronous pulley 10.

[0056] Support plate 12: The support plate 12 is made of 65Mn material with a thickness of 5mm and is rotatably connected to the output end of the eccentric wheel 6. The advantage of this setting is that the 65Mn material has good elasticity and strength, and can withstand repeated swinging forces without easily being fatigued and damaged. The 5mm thickness ensures the rigidity of the support plate. When converting the rotational motion of the eccentric wheel 6 into swinging motion, its own deformation is small, and the motion can be accurately transmitted to subsequent components.

[0057] Support 13: Support 13 is made of zinc alloy with a hole diameter of 12mm. It is fixedly connected to the first hook 14 and the second hook 15 and is rotatably connected to the support plate 12. The advantage of this design is that the zinc alloy material has self-lubricating properties, which reduces the friction between support 13 and support plate 12, making the rotation more flexible and smooth. The 12mm hole diameter is adapted to support plate 12, ensuring the stability of the connection between the two and preventing loosening during motion transmission, thus ensuring the precise lifting and lowering of the hooks.

[0058] First hook 14 and second hook 15: Both first hook 14 and second hook 15 are made of 45# steel and are 200mm long. First hook 14 is located on the outer side of left side plate 1 and right side plate 2, and second hook 15 is located on the inner side of left side plate 1 and right side plate 2. The advantage of this arrangement is that 45# steel has high strength and can withstand the tension of the warp threads without easily deforming. The 200mm length can meet the needs of pulling the warp threads. The outer first hook 14 and the inner second hook 15 are alternately raised and lowered under the drive of eccentric wheel 6, which can stably pull the warp threads to form an opening and ensure the quality of jacquard weaving.

[0059] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. An opening transmission mechanism for a jacquard machine, comprising a left side plate (1), characterized in that: Four connecting beams (3) are fixedly connected to the top of one side of the left side plate (1), and the other end of the connecting beams (3) is fixedly connected to the right side plate (2); Two eccentric wheels (6) are rotatably connected to both sides of the left side plate (1) and the right side plate (2), and the eccentric wheels (6) on both sides have a phase difference of 180 degrees; A drive mechanism is provided between the eccentric wheels (6), and a hook mechanism is provided on the eccentric wheels (6).

2. The opening transmission mechanism of a jacquard machine according to claim 1, characterized in that: The drive mechanism includes a seated bearing (4), which is fixedly connected to the inner side of the left side plate (1) and the right side plate (2); A rotating shaft (5) is rotatably connected to a bearing (4). The two sides of the rotating shaft (5) pass through the left side plate (1) and the right side plate (2) and are fixedly connected to a drive wheel (7). The rotating shaft (5) is fixedly connected to a synchronous pulley (10) at one end of the left side plate (1).

3. The opening transmission mechanism of a jacquard machine according to claim 2, characterized in that: A drive motor (8) is fixedly connected to the outer side of the left side plate (1), and a synchronous pulley (9) is fixedly connected to the output end of the drive motor (8); A belt (11) is connected to the synchronous pulley one (9) for transmission, and the belt (11) is rotatably connected to the synchronous pulley two (10).

4. The opening transmission mechanism of a jacquard machine according to claim 3, characterized in that: The drive wheel (7) is engaged with the eccentric wheel (6).

5. The opening transmission mechanism of a jacquard machine according to claim 4, characterized in that: The lifting mechanism includes a support plate (12), which is rotatably connected to the output end of the eccentric wheel (6). A first lifting hook (14) is provided on the outer side of the left side plate (1) and the right side plate (2), and a support (13) is fixedly connected to the first lifting hook (14). The support (13) is rotatably connected to the support plate (12) on the eccentric wheel (6) on the outer side of the left side plate (1) and the right side plate (2).

6. The opening transmission mechanism of a jacquard machine according to claim 5, characterized in that: The inner sides of the left side plate (1) and the right side plate (2) are provided with a second hook (15), and a support (13) is fixedly connected to the second hook (15); The support (13) is rotatably connected to the support plate (12) on the eccentric wheel (6) on the inner side of the left side plate (1) and the right side plate (2).

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