The direct untwisted wire drawing machine and the untwisted roving wire drawing machine are respectively composed of a winding head, a wire arrangement device, a wire arrangement and separation device, a drum changing device, an oil mist lubrication device, a pneumatic device, a spray device, and a head brake device:
1. Winding head structure: The joint part of the head spindle and the head body adopts conical meshing positioning to maintain the rotation accuracy of the head. The head structure is a centrifugal expansion block type, which consists of the head body, expansion block, expansion block key, pressure spring, head front cover, and head rear cover. The entire head is made of aluminum alloy and stainless steel. When the head rotates at high speed, the expansion block supports the winding drum under the action of centrifugal force, and the fiber is wound on the surface of the winding drum. When the winding is completed and the head stops rotating, the centrifugal force disappears and the expansion block falls freely to unload the drum.
2. Wire arrangement device: The movement of the spiral wire arrangement shaft is divided into rotational movement and reciprocating movement: the rotational movement is achieved by the wire arrangement motor through the synchronous belt drive, and the reciprocating movement is achieved by the servo motor through the synchronous belt, rolling screw assembly, and linear bearing drive. The reciprocating stroke is between 50 and 200 mm, and the reciprocating stroke can be adjusted by changing the position of the two limit sensors.
3. Wire arrangement device: The function of the wire arrangement device of the untwisted roving drawing machine is to move the wire arrangement device toward the machine head at the beginning of winding, and to gradually move the wire arrangement device to the right (also called horizontal movement) as time goes by and the thickness of the silk cake increases during the winding process. This keeps the distance between the wire arrangement wire and the surface layer of the silk cake unchanged, thereby ensuring the consistency of the tension between the inner and outer layers of the silk cake.
4. Can change device: Can change device is driven by can change motor and cylinder to turn to the appropriate winding position. The motor drives the rotating frame rotor through the reduction gear and chain until the head position detection sensor detects the stop; then the rotating frame positioning cylinder is activated to turn the rotating frame rotor to the specified position and firmly clamp the stop block to ensure the normal wire drawing operation.
5. Oil mist lubrication device: Oil mist refers to oil particles suspended in a high-speed air jet. The oil mist lubrication device introduces dry compressed air from a compressed air pipeline into an oil mist generator, and uses the compressed air carrier to use the Venturi and vortex effects to atomize the lubricating oil into fine oil particles suspended in a high-speed air jet and deliver the oil mist to each lubrication point.
6. Pneumatic device: The pneumatic device of the direct untwisted wire drawing machine and the untwisted roving wire drawing machine consists of an air pressure switch, an air pressure regulating valve, a solenoid valve, an actuator cylinder and pneumatic pipe fittings.
7. Head brake device: Electromagnetic energy consumption braking is a non-contact and frictionless braking. It has a large braking torque and works reliably. It inputs the DC power after voltage reduction and rectification into the stator winding of the motor, thereby generating an electromagnetic torque in the opposite direction of rotation to achieve electromagnetic energy consumption braking.
8. Spray device: The spray devices in the wire drawing machine include wire drawing spray and head changing spray. Wire drawing spray is to atomize deionized water into droplets with a diameter of 5~10μm, and then spray them along the approximate tangent direction of the nozzle. The function of the spray device is to clean the wire drawing wire and prevent the wetting agent from forming a film on the wire drawing wire. The head changing spray is to prevent the hair from falling on the wound wire tube when changing the tube.
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