Transmission mechanism of jacquard

Abstract

The transmission mechanism comprises a gear shaft, an elastic piece, a brake disc and an electromagnet, the gear shaft is sequentially connected with a friction plate, a transmission assembly and a motor in a fastening mode in the axial direction, the electromagnet is arranged opposite to the end, away from the motor, of the gear shaft, one end of the elastic piece is connected with the electromagnet, and the other end of the elastic piece is connected with the brake disc. The other end of the elastic piece is connected with a brake disc, and the brake disc movably abuts against the friction plate. When a machine is in a standby state or a special power-off state, the attraction force of the electromagnet on the brake disc due to power loss disappears, the elastic piece pushes the brake disc, the brake disc abuts against the friction plate under the thrust of the spring, and the friction plate is fixed to the gear shaft, so that the gear shaft stops rotating as soon as possible, and the rotation inertia of the gear shaft is eliminated; and the textile machine is prevented from hurting fabrics or operators in an asynchronous or special power-off stall state.

Description

TECHNICAL FIELD

[0001] The utility model relates to textile equipment technical field, concretely relates to jacquard transmission mechanism. BACKGROUND

[0002] The textile machine is also called spinning machine, weaving machine, cotton spinning machine and the like, and the ancient textile machine is a loom driven by manpower. The textile machine is a tool for processing raw materials such as threads, silk and hemp into silk threads and then weaving into cloth, and is also called a spinning reel, a spinning reel, a spindle, a pedal loom, a modern mechanical loom, a modern numerical control automatic loom and the like. Most of the modern textile machines are driven by motors, and the textile machine automatic brake device needs to be used when the textile machine has an accident or a fault.

[0003] Most of the existing textile machine automatic brake devices add programs in the control system of the motor, and automatically cut off the power to play the effect of emergency braking in the case of emergency of the machine. However, according to the running inertia of the machine itself, the machine runs at low speed until the inertia disappears in the case of motor power-off braking, so there is a safety hazard in various automatic brake devices in the case of emergency. UTILITY MODEL CONTENTS

[0004] In view of the above technical problems, the utility model provides a jacquard transmission mechanism, which makes the brake disc abut against the friction plate under the thrust of the spring. Since the friction plate is fixed on the gear shaft, the gear shaft can be stopped from rotating as soon as possible, and the rotational inertia of the gear shaft can be eliminated.

[0005] The technical scheme adopted by the utility model is as follows: a jacquard transmission mechanism, comprising a gear shaft, an elastic member, a brake disc and an electromagnet, the gear shaft is sequentially and tightly connected with a friction plate, a transmission assembly and a motor in the axial direction, the electromagnet is arranged opposite to one end of the gear shaft away from the motor, one end of the elastic member is connected with the electromagnet, and the other end of the elastic member is connected with the brake disc, and the brake disc is movably abutted against the friction plate.

[0006] Optionally, the brake disc is movably sleeved on the outer peripheral wall of the gear shaft, and a gap is formed between the inner peripheral wall of the brake disc and the outer peripheral wall of the gear shaft.

[0007] Optionally, the number of the elastic members is multiple, and the multiple elastic members are distributed in the circumferential direction of the electromagnet.

[0008] Optionally, one side of the brake disc facing the friction plate is provided with a strip-shaped convex strip, and one side of the friction plate facing the brake disc is provided with a strip-shaped groove matched with the strip-shaped convex strip.

[0009] Optionally, the friction plate is made of carbon fiber ceramic composite material or carbon-carbon composite material, and the brake disc is made of cast iron material.

[0010] Optionally, the transmission assembly comprises a first gear, a first transmission shaft, a second transmission shaft, a first conical wheel and a second conical wheel, the gear shaft is engaged with the first gear, one end of the first transmission shaft is coaxially sleeved with the first gear, the other end of the first transmission shaft is coaxially sleeved with the first conical wheel, one end of the second transmission shaft is coaxially sleeved with the second conical wheel, the second conical wheel is engaged with the first conical wheel, and the first transmission shaft and the second transmission shaft are arranged perpendicular to each other.

[0011] Optionally, the encoder is further connected with the first transmission shaft, and the encoder is used for encoding the angular position of the first transmission shaft.

[0012] Optionally, the second gear is further used for driving the beating-up mechanism and the weft insertion mechanism to operate, and the first gear is engaged with the second gear for transmission.

[0013] The utility model discloses a beneficial effect is: in the machine standby state or special power-off state, the electromagnet because the suction of brake disc disappears when losing power, and the elastic part pushes the brake disc, and under the thrust of spring, the brake disc is in abutment with the friction plate, because the friction plate is fixed on the gear shaft, makes the gear shaft stop rotating as soon as possible, eliminates the rotation inertia of gear shaft, avoids the harm of textile machine to fabric or operator under the condition of different step or special power-off stall. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The schematic view of the jacquard machine transmission mechanism structure is provided for the utility model embodiment.

[0015] Figure 2 The schematic view of the first gear and the second gear of the jacquard machine transmission mechanism is provided for the utility model embodiment.

[0016] The marks in each drawing are: 1, gear shaft;2, elastic part;3, brake disc;4, electromagnet;5, friction plate;6, motor;7, first gear;8, first transmission shaft;9, second transmission shaft;10, first conical wheel;11, second conical wheel;12, encoder;13, second gear;14, wallboard. DETAILED DESCRIPTION

[0017] The application will be further described in detail below in combination with the drawings and embodiments.

[0018] As Figure 1As shown, the embodiment discloses a jacquard transmission mechanism, comprising a gear shaft 1, an elastic member 2, a brake disc 3 and an electromagnet 4, the gear shaft 1 is sequentially fastened and connected with a friction plate 5, a transmission assembly and a motor 6 along the axial direction, the electromagnet 4 is oppositely arranged with the end of the gear shaft 1 away from the motor 6, one end of the elastic member 2 is connected with the electromagnet 4, the other end of the elastic member 2 is connected with the brake disc 3, and the brake disc 3 is movably abutted with the friction plate 5. In the standby state or special power-off state of the machine, the suction force of the electromagnet 4 to the brake disc 3 disappears due to power loss, the elastic member 2 pushes the brake disc 3, and the brake disc 3 abuts against the friction plate 5 under the pushing force of the spring, since the friction plate 5 is fixed on the gear shaft 1, the gear shaft 1 stops rotating as soon as possible, the rotational inertia of the gear shaft 1 is eliminated, and harm to the fabric or the operator of the textile machine in the out-of-sync or special power-off stall state is avoided. The motor 6 and the electromagnet 4 are connected with the controller respectively, when the motor 6 is powered off, the controller powers off the electromagnet.

[0019] In the embodiment, as shown in the figure, Figure 1 The brake disc 3 movably sleeves the outer peripheral wall of the gear shaft 1, and there is a gap between the inner peripheral wall of the brake disc and the outer peripheral wall of the gear shaft, and the inner peripheral wall of the brake disc 3 is not in contact with the outer peripheral wall of the gear shaft 1. Friction is avoided between the brake disc 3 and the gear shaft 1. The number of the elastic members 2 is multiple, and the multiple elastic members 2 are distributed in the circumferential direction of the electromagnet 4. Multiple elastic members 2 can provide stronger restoring force, increase the extrusion force of the brake disc 3 on the friction plate 5, and make the gear shaft 1 stop rotating as soon as possible. One side of the brake disc 3 facing the friction plate 5 is provided with a strip-shaped convex strip, and one side of the friction plate 5 facing the brake disc 3 is provided with a strip-shaped groove matched with the strip-shaped convex strip. When the brake disc 3 abuts against the friction plate 5, the strip-shaped convex strip on the brake disc 3 is embedded in the inside of the strip-shaped groove on the friction plate 5, avoiding the circumferential rotation of the friction plate 5 relative to the brake disc 3. The friction plate 5 is a carbon fiber ceramic composite material or a carbon-carbon composite material, and the brake disc 3 is a cast iron material.

[0020] In the embodiment, as shown in the figure, Figure 1As shown, the transmission assembly includes a first gear 7, a first transmission shaft 8, a second transmission shaft 9, a first bevel gear 10 and a second bevel gear 11, the gear shaft 1 is engaged with the first gear 7, the first transmission shaft 8 has the first gear 7 coaxially sleeved at one end, the first transmission shaft 8 has the first bevel gear 10 coaxially sleeved at the other end, the second transmission shaft 9 has the second bevel gear 11 coaxially sleeved at one end, the second bevel gear 11 is engaged with the first bevel gear 10, and the first transmission shaft 8 and the second transmission shaft 9 are arranged perpendicular to each other. The gear shaft 1 drives the first gear 7 to rotate, the first gear 7 drives the first transmission shaft 8 to rotate, the first transmission shaft 8 drives the first bevel gear 10 to rotate, the first bevel gear 10 drives the second bevel gear 11 to rotate, the second bevel gear 11 drives the second transmission shaft 9 to rotate, and the first transmission shaft 8 and the second transmission shaft 9 are arranged perpendicular to each other in a non-contact manner through the engagement of the first bevel gear 10 and the second bevel gear 11, wherein the second transmission shaft 9 is a jacquard head input shaft, and power is transmitted to the jacquard head, the space of the loom is reasonably utilized, and the structure is reasonable. The gear shaft itself has a gear structure.

[0021] As Figure 1 shown, an encoder 12 is further included, the encoder 12 is connected with the first transmission shaft, and the encoder 12 is used for encoding the angular position of the first transmission shaft 8. Since the jacquard machine is mainly responsible for controlling the lifting of the warp, forming a complex pattern, and the loom is used for interweaving the warp and the weft into cloth. The synchronous movement of the jacquard machine and the loom is very critical, the motor 6 is a servo motor 6, the servo motor 6 drives the jacquard machine to move through the gear shaft 1 driving the first transmission shaft 8, the encoder 12 encodes the angular position of the first transmission shaft 8, and simultaneously, for each loom, a loom synchronization signal generator is provided in the control system of the loom, the loom synchronization signal generator is used for generating position state information of a main shaft of the loom; the output signals of the encoder 12 and the loom synchronization signal generator are sent to a control board, the control board outputs a control instruction to a motor 6 driving unit according to the difference between the output of the encoder 12 and the output signal of the loom synchronization signal generator, in the embodiment, the motor 6 driving unit is an alternating current servo driver, the alternating current servo driver adjusts the running speed of the servo motor 6 according to the received control instruction, so that the jacquard head of the jacquard machine and the loom are synchronously operated.

[0022] As Figure 2 shown, a second gear 13 for driving the beating-up mechanism and the weft insertion mechanism to operate is further included, and the first gear 7 is engaged with the second gear 13 for transmission. In the weaving process of the jacquard machine, the beating-up mechanism, the weft insertion mechanism and the shedding mechanism (including the jacquard head) are three core functional systems, and the cooperative relationship directly affects the fabric quality, the production efficiency and the pattern accuracy. In the embodiment, the electromagnet 4 is installed in the wallboard 14, and the gear shaft 1 and the first transmission shaft 8 are installed on the wallboard 14 through bearings, and the operation is stable.

[0023] It can be understood that the specific embodiments described above are only used to explain the utility model, and are not limited to the utility model. In addition, it should be noted that only the parts related to the utility model are shown in the drawings for the convenience of description. The technical solutions in the same embodiment and the technical solutions in different embodiments can be arranged and combined to form new technical solutions without contradiction or conflict. Any equivalent structural transformation using the contents of the utility model specification and drawings, direct or indirect application in other related technical fields, are also included in the protection scope of the utility model.

Claims

1. A jacquard drive mechanism, characterized by, The brake disc is movably abutted with the friction plate.

2. The jacquard drive mechanism according to claim 1, characterized in that, The brake disc is movably sleeved on the outer circumferential wall of the gear shaft, and a gap is formed between the inner circumferential wall of the brake disc and the outer circumferential wall of the gear shaft.

3. The jacquard drive mechanism according to claim 1, wherein, The number of the elastic members is multiple, and the multiple elastic members are distributed in the circumferential direction of the electromagnet.

4. The jacquard drive mechanism according to claim 1, wherein, One side of the brake disc facing the friction plate is provided with a strip-shaped convex strip, and one side of the friction plate facing the brake disc is provided with a strip-shaped groove matched with the strip-shaped convex strip.

5. The jacquard drive mechanism according to claim 1, wherein, The friction plate is made of carbon fiber ceramic composite material or carbon-carbon composite material, and the brake disc is made of cast iron material.

6. The jacquard drive mechanism according to claim 1, wherein, The transmission assembly comprises a first gear, a first transmission shaft, a second transmission shaft, a first conical wheel and a second conical wheel, the gear shaft is engaged with the first gear, one end of the first transmission shaft is coaxially sleeved with the first gear, the other end of the first transmission shaft is coaxially sleeved with the first conical wheel, one end of the second transmission shaft is coaxially sleeved with the second conical wheel, the second conical wheel is engaged with the first conical wheel, and the first transmission shaft and the second transmission shaft are arranged perpendicularly to each other.

7. The jacquard drive mechanism according to claim 6, characterized in that, The encoder is connected with the first transmission shaft, and the encoder is used for encoding the angular position of the first transmission shaft.

8. The jacquard drive mechanism according to claim 6, wherein, The second gear is used for driving the beating-up mechanism and the weft insertion mechanism to operate, the first gear is engaged with the second gear for transmission.

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