Friction type centrifugal spinning mechanism and method

Abstract

A friction centrifugal spinning mechanism and method, the mechanism consists of a stator and a rotor, the two are on the same axis, the stator consists of a stator hollow shaft and a stator abrasive disc, the rotor consists of a rotor hollow shaft, a rotor upper abrasive disc, a spinneret and a rotor lower abrasive disc connected in order from top to bottom along the same axis; spinning raw materials are added from a feed inlet on the stator hollow shaft, and enter the gap between the stator abrasive disc and the rotor abrasive disc from a feed outlet of the stator hollow shaft, when the rotor rotates, the rotor abrasive disc drives the spinning raw materials to rotate, friction between the raw materials and the stator abrasive disc, between the raw materials, and between the raw materials and the rotor upper abrasive disc and the rotor lower abrasive disc all generate heat, with the increase of temperature, the raw materials melt into a melt, the melt flows outwardly into a storage tank under the thrust of centrifugal force and abrasive teeth, the melt in the storage tank rotates with the rotor and is thrown out through the spinneret holes under the action of centrifugal force to form silk, so as to realize friction centrifugal spinning, with a simple structure, energy saving and high efficiency.

Description

Technical Field

[0001] The present invention relates to a melt spinning mechanism and a melt spinning method, in particular to a centrifugal spinning mechanism and a method for melting raw materials by frictional heating. Background Art

[0002] At present, the known melt spinning mechanism and method is to add the spinning raw material into the screw machine, electrically heat the screw barrel, transfer the heat of the screw barrel to the spinning raw material in the screw barrel, the spinning raw material is heated and melted and extruded by the screw machine to the metering pump, and then from the metering pump to the spinneret through the flow plate, and then ejected from the spinneret into filaments to complete the spinning process. Its structure is complex, and it consumes a lot of energy and has low efficiency. Summary of the invention

[0003] In order to overcome the drawbacks of using a screw machine for spinning, the present invention provides a friction centrifugal spinning mechanism and method, which integrates melting material and spinning, has a small size and simple structure, low production cost, short process flow, and is energy-saving and efficient.

[0004] The technical solution adopted by the present invention to solve the technical problem is as follows: the friction centrifugal spinning mechanism described in the present invention is composed of a stator and a rotor, the stator and the rotor are on the same axis, the stator is composed of a stator hollow shaft and a stator abrasive disc, the lower end of the stator hollow shaft is connected to the stator abrasive disc, and the two are on the same axis; the rotor is composed of a rotor hollow shaft, an upper rotor abrasive disc, a spinneret and a lower rotor abrasive disc, and the two are connected in sequence from top to bottom along the same axis; the stator abrasive disc is in a cavity formed by the upper rotor abrasive disc, the spinneret and the lower rotor abrasive disc, the stator hollow shaft is in the rotor hollow shaft, but the upper end of the stator hollow shaft is higher than the upper end of the rotor hollow shaft, and the higher part is fixed on the frame, the stator hollow shaft and the rotor hollow shaft are positioned by a bearing, the stator hollow shaft holds up the rotor through the bearing, and the rotor hollow shaft is driven to rotate by a power source.

[0005] The stator hollow shaft and the stator abrasive disc are arranged as an integrated structure. The stator abrasive disc is a disc with a through hole in the center. The outer diameter of the stator abrasive disc is larger than the outer diameter of the stator hollow shaft. The upper end of the stator hollow shaft is a feed port. The discharge ports include an upper discharge port and a lower discharge port. A radial upper discharge port is arranged at the lower end of the stator hollow shaft near the stator abrasive disc. The lower end of the central hole of the stator abrasive disc is a lower discharge port. The upper and lower end surfaces of the stator abrasive disc are smooth or rough or have abrasive teeth. The abrasive teeth are evenly distributed on the stator abrasive disc. The direction of the abrasive teeth is straight teeth (consistent with the radial direction) or oblique teeth or arc teeth. The tooth height of the abrasive teeth is very small or the tooth bottom of the abrasive teeth gradually becomes shallower from the inside to the outside along the radial direction.

[0006] The upper abrasive disc of the rotor and the lower abrasive disc of the rotor are both disc-shaped, and the upper abrasive disc of the rotor has a center hole. The hollow shaft of the rotor and the upper abrasive disc of the rotor are arranged as an integrated structure. The lower end surface of the upper abrasive disc of the rotor is arranged as a conical surface near the center hole, and the outer circle is an annular plane. The upper end surface of the lower abrasive disc of the rotor is arranged as a conical surface near the center line, and the outer circle is an annular plane. A storage gap is formed between the conical surface and the end surface of the stator abrasive disc. The conical surfaces of the upper abrasive disc of the rotor and the lower abrasive disc of the rotor are uniformly distributed with abrasive teeth. The length of the abrasive teeth in the radial direction is less than the length of the conical surface in the radial direction. The tooth tops of the abrasive teeth are on the same plane as the annular plane and are perpendicular to the axis centerline. The tooth bottoms of the abrasive teeth gradually become shallower from the inside to the outside along the radial direction to the annular plane. The directions of the abrasive teeth include straight teeth (consistent with the radial direction) or oblique teeth or arc teeth.

[0007] The spinneret is in the shape of a circular tube, with flat surfaces at both ends and spinneret holes on the wall.

[0008] The stator and the rotor are not in contact, and are positioned with each other by the bearings between the stator hollow shaft and the rotor hollow shaft. A narrow gap is provided between the annular plane of the end face of the upper abrasive disk of the rotor and the upper end face of the stator abrasive disk. A narrow gap is also provided between the annular plane of the end face of the lower abrasive disk of the rotor and the lower end face of the stator abrasive disk. The narrow gap limits the passage of unmelted raw materials. The gap between the outer circumferential surface of the stator abrasive disk and the inner circumferential surface of the spinneret is a storage tank.

[0009] A circulating water channel is arranged near the center hole inside the stator abrasive disc. The inlet pipe and outlet pipe of the circulating water enter from the center hole of the stator hollow shaft and are connected with the circulating water channel. The temperature of the stator is adjusted by controlling the temperature of the circulating water, and the melt temperature is adjusted by adjusting the stator temperature.

[0010] The stator hollow shaft is connected to the frame through bearings and bearing seats, and the locking nut fixes the axial position of the stator. The stator hollow shaft is driven to rotate by the power source, that is, the stator rotates. The melt temperature is adjusted by adjusting the rotation speed difference between the stator and the rotor.

[0011] The mechanism only requires the stator abrasive disc and the rotor lower abrasive disc to generate heat and melt the spinning raw materials by friction, and the stator only has the lower discharge port; only requires the stator abrasive disc and the rotor upper abrasive disc to generate heat and melt the spinning raw materials by friction, and the stator only has the upper discharge port.

[0012] The rotor hollow shaft, the rotor upper abrasive disc and the spinneret are arranged as an integrated structure, or the spinneret and the rotor lower abrasive disc are arranged as an integrated structure.

[0013] The friction centrifugal spinning method of the present invention is as follows: when the friction centrifugal spinning mechanism is in operation, the spinning raw material is added from the feed port on the stator hollow shaft, and enters the storage gap between the stator abrasive disk and the rotor abrasive disk from the discharge port of the stator hollow shaft. When the rotor hollow shaft is driven to rotate, that is, when the rotor rotates, the rotor abrasive disk drives the spinning raw material to rotate, and the spinning raw material is displaced outwardly by the centrifugal force and squeezed against each other. The spinning raw material contacting the stator abrasive disk rubs against the stator abrasive disk to become small micro particles or melts into a melt after frictional heat is generated. Because the rotor rotates, frictional heat is generated between the small micro particles, between the small micro particles and the rotor abrasive disk, and between the small micro particles and the stator abrasive disk to melt the small micro particles into a melt. The sub-abrasive disc, melt and stator abrasive disc will all generate heat by friction, causing the melt temperature to continue to rise. After heating, the surfaces of the stator abrasive disc and the rotor abrasive disc have the effect of heating and melting the raw materials. The melt flows outward due to the centrifugal force and the thrust of the abrasive teeth, and flows to the narrow gap between the annular plane of the end face of the rotor abrasive disc and the end face of the stator abrasive disc. The melt passing through the narrow gap continues to heat up due to friction and enters the storage tank. When the melt temperature needs to be adjusted, the rotor speed can be adjusted, or the stator temperature can be adjusted by adjusting the circulating water temperature, or the speed difference between the rotor and stator can be adjusted to adjust the melt temperature. The melt entering the storage tank rotates with the rotor and is thrown out into filaments through the spinneret under the action of centrifugal force, realizing friction centrifugal spinning.

[0014] The beneficial effects of the present invention are as follows: the spinning raw material is melted by utilizing the principle of frictional heating, the melted spinning melt rotates with the rotor, enters the spinneret hole under the action of centrifugal force and is thrown out into filaments. The present invention integrates melting material and spinning into one, has a simple structure, occupies a small space, and is energy-saving and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is an assembly longitudinal section structural diagram of the mechanism.

[0016] Figure 2 This is the longitudinal section structure diagram of the stator.

[0017] Figure 3 This is a longitudinal section diagram of the rotor.

[0018] Figure 4 It is a longitudinal section diagram of the integrated structure of the rotor hollow shaft and the abrasive disc on the rotor.

[0019] Figure 4-1 for Figure 4 G view.

[0020] Figure 5 This is a longitudinal section diagram of the abrasive disc under the rotor.

[0021] Figure 5-1 for Figure 5 F view.

[0022] Figure 6 This is a longitudinal section diagram of the spinneret.

[0023] Figure 7 This is a longitudinal section diagram of the stator with only the lower discharge port.

[0024] Figure 8 This is a longitudinal section diagram of the stator with only the upper discharge port.

[0025] Fig. 9 The longitudinal section diagram shows that the hollow rotor shaft, the abrasive disc on the rotor and the spinneret are arranged as an integrated structure.

[0026] Fig.10 The longitudinal section diagram shows the spinneret and the lower abrasive disc of the rotor as an integrated structure.

[0027] Fig.11 Schematic diagram of a stator with circulating water temperature control.

[0028] Fig.12 This is a structural diagram of the rotatable longitudinal section of the stator.

[0029] In the figure, 1. stator hollow shaft, 2. stator abrasive disc, 3. feed port, 4. upper discharge port, 5. lower discharge port, 6. rotor hollow shaft, 7. rotor upper abrasive disc, 8. spinneret, 9. spinneret hole, 10. rotor lower abrasive disc, 11. bearing, 12. narrow gap, 13. storage trough, 14. abrasive teeth, 15. storage gap, 16. tooth bottom, 17. water inlet pipe, 18. water outlet pipe, 19. circulating water channel, 20. locking nut, 21. stator bearing, 22 stator bearing seat, 23. circular ring flat, 24. conical surface. DETAILED DESCRIPTION

[0030] In the figure, the friction centrifugal spinning mechanism is composed of a stator and a rotor. The stator and the rotor are on the same axis. The stator is composed of a stator hollow shaft (1) and a stator abrasive disc (2). The lower end of the stator hollow shaft (1) is connected to the stator abrasive disc (2), and the two are on the same axis. The rotor is composed of a rotor hollow shaft (6), an upper rotor abrasive disc (7), a spinneret (8) and a lower rotor abrasive disc (10), and they are connected in order from top to bottom along the same axis. The stator abrasive disc (2) is in a cavity formed by an upper rotor abrasive disc (7), a spinneret (8) and a lower rotor abrasive disc (10); the stator hollow shaft (1) is in the rotor hollow shaft (6), but the upper end of the stator hollow shaft is higher than the upper end of the rotor hollow shaft, and the higher part is fixed on the frame; the stator hollow shaft (1) and the rotor hollow shaft (6) are positioned by a bearing (11), the stator hollow shaft (1) holds up the rotor through the bearing (11), and the rotor hollow shaft is driven to rotate by a power source.

[0031] The stator hollow shaft (1) and the stator abrasive disc (2) are arranged as an integral structure. The stator abrasive disc (2) is in the shape of a disc with a through hole at the center. The outer diameter of the stator abrasive disc is larger than the outer diameter of the stator hollow shaft. The upper end of the stator hollow shaft is a feed port (3). The discharge ports include an upper discharge port (4) and a lower discharge port (5). A radial upper discharge port (4) is arranged near the lower end of the stator hollow shaft. The lower end of the central hole of the stator abrasive disc surface is the lower discharge port (5). The upper and lower end surfaces of the stator abrasive disc (2) are smooth surfaces or rough surfaces or surfaces with abrasive teeth. The abrasive teeth are evenly distributed on the stator abrasive disc. The directions of the abrasive teeth include straight teeth (consistent with the radial direction), oblique teeth or arc teeth. The tooth bottoms (16) of the abrasive teeth gradually become shallower from the inside to the outside along the radial direction.

[0032] The rotor upper abrasive disc (7) and the rotor lower abrasive disc (10) are both disc-shaped. The rotor upper abrasive disc (7) has a center hole. The rotor hollow shaft (6) and the rotor upper abrasive disc (7) are arranged as an integrated structure. The lower end surface of the rotor upper abrasive disc (7) is arranged as a conical surface (24) near the center hole, and the outer circle is an annular plane (23). The upper end surface of the rotor lower abrasive disc is arranged as a conical surface (24) near the center line, and the outer circle is an annular plane (23). The conical surface (24) forms a storage space with the end surface of the stator abrasive disc. The rotor upper abrasive disc (7) and the rotor lower abrasive disc (10) are provided with evenly distributed abrasive teeth (14) on the conical surface (24), the length of the abrasive teeth (14) in the radial direction is smaller than the length of the conical surface (24) in the radial direction, the tooth tops of the abrasive teeth are in the same plane as the annular plane and are perpendicular to the axis, the tooth bottoms (16) of the abrasive teeth gradually become shallower from the inside to the outside along the radial direction to the annular plane, and the directions of the abrasive teeth are straight teeth (consistent with the radial direction) or oblique teeth or arc teeth.

[0033] The spinneret (8) is in the shape of a circular tube, with two end surfaces being flat and a spinneret hole on the wall.

[0034] The stator and the rotor are not in contact, and are positioned relative to each other through a bearing (11) between a stator hollow shaft (1) and a rotor hollow shaft (6). A narrow gap (12) is provided between a circular plane at the end face of an upper abrasive disc (7) of the rotor and an upper end face of an abrasive disc (2) of the stator. A narrow gap (12) is also provided between a circular plane (23) at the end face of a lower abrasive disc (10) of the rotor and a lower end face of the abrasive disc (2) of the stator. The narrow gap (12) limits the passage of unmelted raw materials and heats up the melt passing therethrough by friction. The space between the outer circumference of the stator abrasive disc (2) and the inner circumference of the spinneret (8) is a material storage tank (13).

[0035] A circulating water channel (19) is arranged inside the stator abrasive disc (2) near the center hole. A circulating water inlet pipe (17) and a circulating water outlet pipe (18) enter from the center hole of the stator hollow shaft (1) and are connected to the circulating water channel (19). Fig.11As shown, the stator temperature is adjusted by controlling the temperature of the circulating water, and the melt temperature is adjusted by adjusting the stator temperature.

[0036] The stator hollow shaft (1) is connected to the frame through the stator bearing (21) and the stator bearing seat (22), and the locking nut (20) fixes the axial position of the stator. Fig.12 As shown, the stator hollow shaft (1) is driven to rotate by a power source, i.e., the stator rotates, and the melt temperature is adjusted by adjusting the rotation speed difference between the stator and the rotor.

[0037] The mechanism only requires the stator abrasive disc (2) and the rotor lower abrasive disc (10) to rub the spinning raw material into melt, and the stator has only the lower outlet. Figure 7 Only the stator abrasive disc (2) and the rotor abrasive disc (7) are needed to rub the molten material of the spinning raw material, and the stator has only an upper discharge port, such as Figure 8 shown.

[0038] The rotor hollow shaft (6), the rotor upper abrasive disc (7) and the spinneret (8) are arranged as an integrated structure, such as Fig. 9 or the spinneret (8) and the lower abrasive disc (10) of the rotor are arranged as an integral structure, such as Fig.10 shown.

[0039] The spinning raw material is added from the feed port (3) on the stator hollow shaft (1), and enters the storage gap (15) between the stator abrasive disc and the rotor abrasive disc through the upper discharge port (4) and the lower discharge port (5) of the stator hollow shaft. When the rotor hollow shaft (6) is driven to rotate, that is, when the rotor rotates, the rotor abrasive disc drives the spinning raw material to rotate. The spinning raw material is displaced outward by the centrifugal force and squeezed against each other. The spinning raw material that contacts the stator abrasive disc rubs against the stator abrasive disc and becomes small micro particles or melts into a melt after frictional heat is generated. As the rotor rotates, the small micro particles and the small micro particles are Frictional heat is generated between particles and the rotor abrasive disk, between small particles and the stator abrasive disk, and the small particles are melted into a melt. Frictional heat is generated between melts, between melts and the rotor abrasive disk, and between melts and the stator abrasive disk, and the melt temperature continues to rise. As the temperature rises, the melt fluidity becomes better. The melt flows outwards under the centrifugal force and the thrust of the abrasive teeth, and flows to the narrow gap (12) between the annular plane of the end face of the rotor abrasive disk and the end face of the stator abrasive disk. The melt passing through the narrow gap continues to be heated by friction and enters the storage tank (13). When the melt temperature needs to be adjusted, the stator temperature can be adjusted by circulating water, or the melt temperature can be adjusted by adjusting the speed difference between the stator and the rotor. The melt entering the storage tank (13) rotates with the rotor and is thrown out through the spinneret (9) under the action of centrifugal force to form silk, thereby realizing friction centrifugal spinning.

Claims

1. A friction centrifugal spinning mechanism, characterized in that: The friction centrifugal spinning mechanism is composed of a stator and a rotor, the stator and the rotor are on the same axis, the stator is composed of a stator hollow shaft and a stator abrasive disc, the lower end of the stator hollow shaft is connected to the stator abrasive disc, the two are on the same axis, the upper end of the stator hollow shaft is a feed port, the discharge port includes an upper discharge port and a lower discharge port, the lower end of the stator hollow shaft near the stator abrasive disc has a radial upper discharge port, the lower end of the stator abrasive disc center hole is a lower discharge port, the upper and lower end surfaces of the stator abrasive disc are smooth or rough or have abrasive teeth, the abrasive teeth are evenly distributed on the stator abrasive disc, and the grinding The direction of the teeth is straight teeth, helical teeth or circular arc teeth. The rotor is composed of a rotor hollow shaft, an upper abrasive disc of the rotor, a spinneret and a lower abrasive disc of the rotor, and they are connected in sequence from top to bottom along the same axis. The upper abrasive disc of the rotor and the lower abrasive disc of the rotor are both disc-shaped. The upper abrasive disc of the rotor has a center hole. The rotor hollow shaft and the upper abrasive disc of the rotor are set as an integrated structure. The lower end surface of the upper abrasive disc of the rotor is set as a conical surface near the center hole, and the outer circle is a circular annular plane. The upper end surface of the lower abrasive disc of the rotor is a conical surface near the center line, and the outer circle is a circular annular plane. There is a conical surface between the conical surface and the end surface of the stator abrasive disc. The conical surfaces of the upper abrasive disc of the rotor and the lower abrasive disc of the rotor are both evenly distributed with abrasive teeth. The length of the abrasive teeth in the radial direction is smaller than the length of the conical surface in the radial direction. The tooth tops of the abrasive teeth and the annular plane are on the same plane and are perpendicular to the axis. The tooth bottoms of the abrasive teeth gradually become shallower from inside to outside along the radial direction to the annular plane. The directions of the abrasive teeth are straight teeth, oblique teeth or circular arc teeth. A narrow gap is set between the annular plane of the end face of the upper abrasive disc of the rotor and the upper end face of the stator abrasive disc. A narrow gap is also set between the annular plane of the end face of the lower abrasive disc of the rotor and the lower end face of the stator abrasive disc. There is a narrow gap, which limits the passage of unmelted raw materials. The space between the outer circumference of the stator abrasive disc and the inner circumference of the spinneret is a storage tank. The spinneret is in a circular tube shape, with two flat end faces and spinneret holes on the wall. The stator abrasive disc is in a cavity composed of the rotor upper abrasive disc, the spinneret and the rotor lower abrasive disc. The stator hollow shaft is in the rotor hollow shaft, but the upper end of the stator hollow shaft is higher than the upper end of the rotor hollow shaft, and the higher part is fixed on the frame. The stator hollow shaft and the rotor hollow shaft are positioned by bearings. The stator hollow shaft lifts the rotor through the bearings, and the rotor hollow shaft is driven to rotate by the power source.

2. The friction centrifugal spinning mechanism according to claim 1, characterized in that: The stator hollow shaft and the stator abrasive disc are arranged as an integrated structure. The stator abrasive disc is in the shape of a disc with a through hole in the center. The outer diameter of the stator abrasive disc is larger than the outer diameter of the stator hollow shaft.

3. The friction centrifugal spinning mechanism according to claim 1 is characterized in that: A circulating water channel is arranged near the center hole inside the stator abrasive disc, and a water inlet pipe and a water outlet pipe of the circulating water enter from the center hole of the stator hollow shaft and are connected with the circulating water channel.

4. The friction centrifugal spinning mechanism according to claim 1, characterized in that: The stator hollow shaft is connected to the frame through the bearing and the bearing seat, and the locking nut fixes the axial position of the stator.

5. The friction centrifugal spinning mechanism according to claim 1, characterized in that: When the stator abrasive disc and the rotor lower abrasive disc are needed to generate heat and melt the spinning raw materials by friction, the stator only has a lower discharge port; When the stator abrasive disc and the rotor upper abrasive disc are needed to generate heat and melt the spinning raw materials through friction, the stator has only an upper discharge port.

6. The friction centrifugal spinning mechanism according to claim 1, characterized in that: The rotor hollow shaft, the rotor upper abrasive disc and the spinneret are arranged as an integrated structure, or the spinneret and the rotor lower abrasive disc are arranged as an integrated structure.

7. A spinning method using the friction centrifugal spinning mechanism according to any one of claims 1 to 6, characterized in that: When the friction centrifugal spinning mechanism is in operation, the spinning raw material is added from the feed port on the stator hollow shaft, and enters the storage gap between the stator abrasive disc and the rotor abrasive disc from the discharge port of the stator hollow shaft. When the rotor hollow shaft is driven to rotate, that is, when the rotor rotates, the rotor abrasive disc drives the spinning raw material to rotate. The spinning raw material is displaced outward by the centrifugal force and squeezed against each other. The spinning raw material that contacts the stator abrasive disc rubs against the stator abrasive disc to become small micro particles or melts into a melt after frictional heat is generated. Because the rotor rotates, frictional heat is generated between the small micro particles, between the small micro particles and the rotor abrasive disc, and between the small micro particles and the stator abrasive disc, causing the small micro particles to melt into a melt. The melt and the melt, the melt and the rotor abrasive disc, and the melt and the stator abrasive disc will all generate frictional heat to cause the small micro particles to melt into a melt. The abrasive discs will generate heat due to friction, causing the melt temperature to continue to rise. After heating, the surfaces of the stator abrasive disc and the rotor abrasive disc have the effect of heating and melting the raw materials. The melt flows outward due to the centrifugal force and the thrust of the abrasive teeth, and flows to the narrow gap between the annular plane of the end face of the rotor abrasive disc and the end face of the stator abrasive disc. The melt passing through the narrow gap continues to heat up due to friction and enters the storage tank. When the melt temperature needs to be adjusted, the rotor speed can be adjusted, or the stator temperature can be adjusted by adjusting the circulating water temperature, or the melt temperature can be adjusted by adjusting the speed difference between the rotor and stator. The melt entering the storage tank rotates with the rotor and is thrown out into filaments through the spinneret under the action of centrifugal force, thereby realizing friction centrifugal spinning.

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