1. A polymer vibrating jet drawing equipment is characterized in that: comprises a melting plasticizing extrusion part, a vibration part and a jet wire drawing part;

the melting plasticizing extrusion part comprises a motor base, a motor, a coupler, a melting plasticizing screw, a charging barrel, a mica heating coil wrapped on the wall of the charging barrel and a feeding hopper arranged on the wall of the charging barrel;

the vibration part comprises a vibration cylinder, an air inlet and a one-way throttle valve, and the injection wire drawing part comprises a needle valve rod, a spray head, a temperature sensing wire and a mica heating coil.

2. A polymer vibratory jet drawing apparatus as defined in claim 1 wherein: the melting plasticizing screw is designed to be equidistant and not equal in depth.

3. A polymer vibratory jet drawing apparatus as defined in claim 1 wherein: and a coupler is arranged between the melting plasticizing screw and the stepping motor, and the melting plasticizing screw and the stepping motor are connected through the coupler.

4. A polymer vibratory jet drawing apparatus as defined in claim 1 wherein: and a flange is arranged between the machine head of the melt extrusion part and the spray wire drawing part, and the machine head of the melt extrusion part is connected with the spray wire drawing part through the flange.

5. The drawing method of a polymer vibration jet drawing apparatus according to claim 1, comprising:

firstly, wire drawing raw materials enter a melting and plasticizing part from a feeding hopper, are melted and plasticized under the shearing action of a mica heating coil on the wall of a charging barrel and a screw rod, and are conveyed forwards under the viscous dragging action of a plasticizing screw rod to enter a jet wire drawing part;

step two, after the melted and plasticized material enters the jet wire drawing part, the vibration cylinder starts to work, and the vibration cylinder drives the needle valve rod to start to reciprocate in the vertical direction;

and step three, drawing the material entering the wire drawing device under the combined action of the pressure generated by the material and the impact force generated by the tail end of the needle valve rod caused by the continuous motion of the melting plasticizing screw and the extrusion force generated by the material at the melting extrusion part, and regulating and controlling the diameter of the product by regulating the size of the opening of the spray head.

Background

Melt spinning is divided into direct spinning and chip spinning. The direct spinning is that the polymer melt after polymerization is directly sent to spinning; the chip spinning needs to make the high polymer solution pass through the preparation process before spinning such as casting belt, cutting into particles and the like, and then send the solution to spinning. The melt spinning is to heat and melt a high molecular polymer into a spinning melt with certain viscosity, continuously and uniformly extrude the spinning melt to a spinning nozzle by a spinning pump, extrude the spinning melt into filaments through fine holes of the spinning nozzle, and solidify the filaments into filaments. If the molecular weight of the material is extremely large, the macromolecular chains are tangled, the fluidity is poor, the filamentation is difficult, the viscosity of the material is extremely high, and the problems of distortion and breakage and non-uniform filamentation are easy to occur in the extrusion process of the small-opening flow channel in the melting method. Therefore, in the field of polymer processing and molding machine technology, there is a need for a research into melt spinning of a polymer having a high molecular weight, and the present invention has been completed based on this.

In order to solve the technical problems, the invention provides polymer vibration jet wire drawing equipment and a polymer vibration jet wire drawing method, which are used for relieving the problems of extrusion swelling and uniform wire forming of high-molecular-weight materials.

Disclosure of Invention

Technical problem to be solved

The invention aims to solve the problems and provide a polymer vibration jet wire drawing method and equipment, which can alleviate the problems of extrusion swelling and uniform wire forming of high molecular weight materials.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme: a polymer vibration injection wire drawing device comprises a fusion plasticizing extrusion part, a vibration part and an injection wire drawing part, wherein the fusion plasticizing extrusion part comprises a motor base, a motor, a coupler, a fusion plasticizing screw, a charging barrel, a mica heating coil wrapped on the wall of the charging barrel and a feeding funnel arranged on the wall of the charging barrel; the vibrating portion includes a vibrating cylinder, an air inlet, and a one-way throttle valve. The spray wire drawing part comprises a needle valve rod, a spray head, a temperature sensing wire and a mica heating coil.

Preferably, the melting and plasticizing screw is designed to be equidistant and not equal in depth.

Preferably, a coupler is arranged between the melting plasticizing screw and the stepping motor, and the melting plasticizing screw and the stepping motor are connected through the coupler.

Preferably, a flange is arranged between the head of the melt extrusion part and the injection wire drawing part, and the head of the melt extrusion part and the injection wire drawing part are connected through the flange.

A drawing method of a polymer vibration jet drawing apparatus, comprising:

firstly, wire drawing raw materials enter a melting and plasticizing part from a feeding hopper, are melted and plasticized under the shearing action of a mica heating coil on the wall of a charging barrel and a screw rod, and are conveyed forwards under the viscous dragging action of a plasticizing screw rod to enter a jet wire drawing part;

step two, after the melted and plasticized material enters the jet wire drawing part, the vibration cylinder starts to work, and the vibration cylinder drives the needle valve rod to start to reciprocate in the vertical direction;

and step three, drawing the material entering the wire drawing device under the combined action of the pressure generated by the material and the impact force generated by the tail end of the needle valve rod caused by the continuous motion of the melting plasticizing screw and the extrusion force generated by the material at the melting extrusion part, and regulating and controlling the diameter of the product by regulating the size of the opening of the spray head.

The invention provides a polymer vibration jet wire drawing method and equipment, which have the following beneficial effects:

the invention innovatively uses the design of the vibration cylinder, the vibration cylinder and the needle valve rod are combined to replace an extrusion part, the design is simplified, the materials are ensured to be subjected to shearing force while being drawn, the materials are further fused and plasticized with the external thermal field, the problem of large extrusion expansion can be effectively relieved by adopting a wire drawing mode of a needle valve rod and spray head combined mode, and meanwhile, the obtained product does not have a spiral shape, and the quality of the product is ensured.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a jet drawing part and a vibrating part according to an embodiment of the present invention;

FIG. 3 is a partial cross-sectional view of an embodiment of the present invention;

FIG. 4 is a schematic view of a melt-plasticizing portion according to an embodiment of the present invention;

FIG. 5 shows a melt plasticizing screw according to an embodiment of the present invention.

In the figure: 1. a blocking cover; 2. inner hexagon countersunk head screws; 3. a needle valve stem; 4. a spray head; 5. a heat preservation cover; 6. a hexagon socket head cap screw; 7. a spring pad; 8. a mica heating ring; 9. a seal ring; 10. a heat preservation ring; 11. a socket head cap screw; 12. flattening the cushion; 13. a cavity; 14. a bushing; 15. a seal ring; 16. a sealing seat; 17. a socket head cap screw; 18. a vibration cylinder; 19. a combined straight joint; 20. a one-way throttle valve; 21. locking the female type right-angle pipe joint; 22. a stepping motor; 23. a lower plate; 24. an upper plate; 25. a charging hopper; 26. a temperature sensing line; 27. a mica heating coil; 28. a connecting plate; 29. a machine head; 30. a charging barrel; 31. melting and plasticizing the screw rod; 32. a baffle plate; 33. a coupling; 34. a vibration shaft; 35. a stiff spring.

Detailed Description

Referring to fig. 1, 2, 3, 4 and 5, an embodiment of the present invention provides a polymer vibration injection wire drawing apparatus, which includes a melt plasticizing extrusion part, a vibration part and an injection wire drawing part, wherein the melt plasticizing extrusion part includes a motor base, a motor, a coupling 33, a melt plasticizing screw 31, a charging barrel 30, a mica heating coil 27 wrapped on the wall of the charging barrel 30, and a feeding funnel 25 mounted on the wall of the charging barrel 30; the vibrating portion includes a vibrating cylinder 18, an intake port, and a one-way throttle valve 20. The spray wire drawing part comprises a needle valve rod 3, a spray head 4, a temperature sensing wire 26 and a mica heating coil 27.

The melting plasticizing screw 31 adopts an equidistant and unequal depth design.

A coupler 33 is arranged between the melting plasticizing screw 31 and the stepping motor 22, and the melting plasticizing screw 31 is connected with the stepping motor 22 through the coupler 33.

A flange is arranged between the head 29 of the melt extrusion part and the injection wire drawing part, and the head 29 of the melt extrusion part and the injection wire drawing part are connected through the flange.

A drawing method of a polymer vibration jet drawing apparatus, comprising:

firstly, wire drawing raw materials enter a melting and plasticizing part from a feeding hopper 25, are melted and plasticized under the shearing action of a mica heating coil 27 and a melting and plasticizing screw 31 on the wall of a charging barrel 30, and are conveyed forwards under the viscosity dragging action of the melting and plasticizing screw 31 to enter a jet wire drawing part;

step two, after the melted and plasticized material enters the jet wire drawing part, the vibration cylinder 18 starts to work, and the vibration cylinder 18 drives the needle valve rod 3 to start to reciprocate in the vertical direction;

and step three, drawing the material entering the wire drawing device under the combined action of the pressure generated by the material and the impact force generated by the tail end of the needle valve rod 3 caused by the continuous movement of the melting plasticizing screw 31 and the extrusion force generated by the material at the melting extrusion part, and regulating and controlling the diameter of the product by regulating the size of the opening of the spray head 4.

As shown in fig. 1 and 2, for the jet wire drawing part, a baffle plate 1 is connected with a heat preservation cover 5 through an inner hexagonal countersunk head screw 2, and the baffle plate 1 is connected with a cavity 13 through an inner hexagonal round head screw 6 and a spring pad 7; the needle valve rod 3 is connected with a vibration shaft inside the cylinder 18 through threaded connection and is arranged in a cavity of the spray head 4; the cavity 13 is connected with the baffle 1 through an inner hexagonal round head screw 6 and a spring pad 7; the mica heating coil 8 is arranged on the outer wall of the cavity 13, plays a role in heat preservation and heating, and prevents the material from solidifying and blocking the spray head 4; the sealing ring 9 is symmetrically arranged at the inner side of the cavity 13; the heat preservation ring 10, the inner hexagonal socket head cap screw 11, the flat pad 12 and the temperature sensing line are matched together to monitor the temperature of the material in the spray head 4; a bushing 14 is arranged between the vibration shaft 34 in the cylinder 18 and the cavity 13, and the bushing 14 is in clearance fit with the vibration shaft 34; the sealing ring 15 and the sealing seat 16 are arranged to enhance the sealing performance of the equipment, and the needle valve rod 3 exhausts the equipment when moving downwards; a socket head cap screw 17 connects the vibration cylinder 1818 with the jet drawing part.

As shown in fig. 1 and 2, the air pressure of the vibrating portion enters the throttle valve 20 through the locking nut type right-angle pipe joint 21, the air pressure in the vibrating cylinder 1818 is controlled by adjusting the nut at the throttle valve 20, and the adjusted air pressure enters the vibrating cylinder 1818 through the combined straight-through joint 19 to drive the needle valve rod 3 to reciprocate.

As shown in fig. 1 and 3, the lower end of the vibration shaft 34 in the vibration cylinder 18 is connected to the needle valve stem 3; a rigid spring 35 is fitted over the vibration shaft 34.

In the melt plasticizing section shown in fig. 1, 4 and 5, the stepping motor 22 is connected to the melt plasticizing screw 31 via a coupling 33; a melting plasticizing screw 31 is installed inside the barrel 30; the lower plate 23 is connected with the motor base, and the upper plate 24 is connected with the lower plate 23, so that the upper plate 24 has enough supporting force for the charging hopper 25; the charging hopper 25 is installed on the charging barrel 30, perpendicular to the axial direction of the charging barrel 30, and the upper plate 24 plays a role of supporting the charging hopper 25; a mica heating coil 27 is arranged on the outer wall of the charging barrel 30, and a temperature sensing wire 26 is arranged on the charging barrel 30; the connecting plate 28 connects the upper plate 24, the cartridge 30 and the head 29 together; the baffle 32 is installed at the beginning of the melting and plasticizing screw 31 to prevent the outflow of the material.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.