Extrusion device for composite hollow three-dimensional fiber spinning machine

Abstract

The invention discloses an extrusion device for a composite hollow three-dimensional fiber spinning machine, the extrusion device comprises a rack, the rack is provided with a feeding assembly, a transmission assembly, a filtering assembly, an extrusion assembly and a spinneret plate which are connected in sequence, the spinneret plate is densely provided with spinneret units, and each spinneret unit comprises a first through hole and a second through hole which are adjacent to each other. According to the extrusion device for the composite hollow three-dimensional fiber spinning machine, two different materials can be conveyed at the same time through the conveying assembly, and after impurities are filtered out through the filtering assembly, the two different materials are extruded out of the first through hole and the second through hole in the spinneret plate through the extrusion assembly; the two materials generate different shrinkage amounts under the air cooling effect at the same time, the bulkiness of finally formed fibers is improved, then the heat retention property is improved, and the device is compact in structure.

Description

Technical Field

[0001] The invention relates to the technical field of spinning, in particular to an extrusion device for a composite hollow three-dimensional fiber spinning machine. Background Art

[0002] Fiber has become the main material for household items such as quilts and pillows due to its good rudeness, thermal insulation, comfort and health, processability and diversity. These characteristics make fiber household items widely used and popular in the market.

[0003] In the prior art, spinning machines are usually used to produce fibers. The production process mainly includes multiple steps such as melt extrusion, metering, filtration, spinning, cooling and molding, oiling and winding. Since the materials used in the production process of the device are fixed, the final fiber product has limited fluffiness, which affects its thermal insulation performance.

[0004] Therefore, it is necessary to improve the extrusion device for the composite hollow three-dimensional fiber spinning machine in the prior art. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects in the prior art and provide an extrusion device for a composite hollow three-dimensional fiber spinning machine which is beneficial to improving the fluffiness of the final product to enhance the thermal insulation performance.

[0006] To achieve the above technical effects, the technical solution of the present invention is: an extrusion device for a composite hollow three-dimensional fiber spinning machine, comprising a frame, on which a feeding assembly, a transmission assembly, a filtering assembly, an extrusion assembly and a spinneret are sequentially connected; The feeding assembly includes an outer silo and an inner silo arranged in the outer silo, the top and bottom of the outer silo are respectively provided with an outer feeding pipe and an outer feeding pipe, and the inner silo is connected with an inner feeding pipe and an inner discharging pipe respectively penetrating the top and bottom of the outer silo; The transmission assembly includes a transmission shell, an inner spiral blade, a heating element, an outer spiral blade and a driving unit. The transmission shell is provided with an inner transmission inlet connected to the inner discharge pipe, an outer transmission inlet connected to the outer discharge pipe, and an inner transmission outlet and an outer transmission outlet both facing downward. The inner cavity of the transmission shell includes an inner transmission cavity connected between the inner transmission inlet and the inner transmission outlet and horizontally, and an outer transmission cavity connected between the outer transmission inlet and the outer transmission outlet and horizontally. The inner transmission cavity is located on the inner side of the outer transmission cavity. The driving unit drives the inner spiral blade to rotate in the inner transmission cavity and drives the outer spiral blade to rotate in the outer transmission cavity. The heating element is used to heat and melt the materials in the inner transmission cavity and the outer transmission cavity. The filter assembly is detachably arranged between the transmission assembly and the extrusion assembly, and the filter assembly comprises an inner filter tube and an outer filter tube both facing downward, the inner filter tube is located on the inner side of the outer filter tube, an inner filter element is arranged inside the inner filter tube, and an outer filter element is arranged between the inner filter tube and the outer filter tube, and the top end of the inner filter tube and the top end of the outer filter tube are respectively connected to the inner transmission outlet and the outer transmission outlet; The spinneret is arranged horizontally, and the spinneret is densely covered with spinneret units, and the spinneret units include a first through hole and a second through hole adjacent to each other, and the first through hole and the second through hole both extend in a vertical direction, and the extrusion assembly is used to extrude the material passing through the inner filter tube and the material passing through the outer filter tube into the first through hole and the second through hole from top to bottom, respectively.

[0007] Preferably, in order to heat the materials in the inner transmission cavity and the outer transmission cavity so that the materials melt and are convenient for transmission, the heating element includes a heating cylinder which is arranged between the inner spiral blade and the outer spiral blade and is coaxial with the inner transmission cavity and the outer transmission cavity, the driving unit includes a driving motor and two transmission units distributed along the axial direction of the inner transmission cavity, the two transmission units each include a driving wheel, a driven wheel and a synchronous belt, the output end of the driving motor is connected to the driving wheel coaxially, the driving wheel is connected to the driven wheel through the synchronous belt, and the driven wheels of the two transmission units are respectively connected to the inner spiral blade and the outer spiral blade.

[0008] Preferably, in order to facilitate the transmission of materials at the output end of the transmission shell to the extrusion assembly through the filtering assembly, a transition shell is provided at the output end of the transmission shell, the transition shell includes an inner transition barrel and an outer transition barrel, the end of the inner transition barrel adjacent to the transmission shell and the end of the outer transition barrel adjacent to the transmission shell are both open, the bottom end of the outer transition barrel is fixedly connected to an outer transition pipe, the bottom end of the inner transition barrel is fixedly connected to an inner transition pipe located on the inner side of the outer transition pipe, the inner transition pipe and the outer transition pipe are respectively detachably connected to the inner filter pipe and the outer filter pipe; the extrusion assembly includes a receiving shell, the receiving shell includes an inner receiving barrel connected to the bottom of the inner filter pipe and open at the top, and an outer receiving barrel connected to the bottom of the outer filter pipe and open at the top, the inner receiving barrel is located on the inner side of the outer receiving barrel.

[0009] Preferably, in order to realize convenient disassembly connection between the filter assembly and the transition shell and the receiving shell, the top and bottom ends of the filter assembly are respectively connected to the transition shell and the receiving shell by threaded bolts and nuts.

[0010] Preferably, in order to extrude the material in the receiving shell onto the spinneret, the extrusion assembly also includes a reciprocating translation unit, an extrusion unit and a collecting unit which are connected in sequence, the extrusion unit includes an inner extrusion barrel, an outer extrusion barrel, an inner extrusion plate and an outer extrusion plate, the inner extrusion barrel is fixed to the inner side of the outer extrusion barrel and the two barrels are in the length direction, the circumferential outer edge of the inner extrusion plate is fixedly connected to the circumferential inner wall of the inner extrusion barrel, the outer extrusion plate is sealingly fitted between the inner extrusion barrel and the outer extrusion barrel, the inner extrusion barrel is connected to the inner receiving barrel and an inner inlet one-way valve is arranged between the two, the outer extrusion barrel is connected to the outer receiving barrel and an outer inlet one-way valve is arranged between the two, and the reciprocating translation unit drives the inner extrusion plate and the outer extrusion plate to move reciprocatingly along the length direction of the inner extrusion barrel.

[0011] Preferably, in order to ensure continuous material input to the spinneret, two extrusion units are provided and are arranged opposite to or in opposite directions along the moving direction of the output end of the reciprocating translation unit.

[0012] Preferably, in order to ensure the molten state of the material during the extrusion process and facilitate the flow of the material, the inner extrusion plate and the outer extrusion plate are both electric heating plates.

[0013] Preferably, in order to facilitate the collection of two different materials at the same place and then extrude them through the first through hole and the second through hole, the collection unit includes a collection shell, an inner collection pipe and an outer collection pipe, the inner collection pipe is located on the inner side of the outer collection pipe, the spinneret cover is arranged at the bottom of the collection shell and is enclosed with the collection shell to form a first collection chamber and a second collection chamber, the inner collection pipe and the inner collection chamber are sequentially connected between the inner extrusion barrel and the first through hole, and the outer collection pipe and the outer collection chamber are sequentially connected between the outer extrusion barrel and the second through hole; the inner collection pipe and the outer collection pipe are respectively connected with an inner collection one-way valve and an outer collection one-way valve.

[0014] Preferably, in order to realize the discharge of two materials from the first through hole and the second through hole respectively, the collecting shell includes an outer collecting barrel and an inner collecting barrel fixed in the outer collecting barrel, the spinneret includes an upper plate, a connecting block and a lower plate fixedly connected in sequence from top to bottom, the upper plate fixing cover is arranged at the bottom of the inner collecting barrel, the lower plate fixing cover is arranged at the bottom of the outer collecting barrel, the second through hole is arranged on the lower plate, the upper plate, the connecting block and the lower plate are respectively provided with an upper through hole, a middle through hole and a lower through hole, the upper through hole, the middle through hole and the lower through hole are connected in sequence to form the first through hole.

[0015] Preferably, in order to further improve the fluffiness of the finally formed fiber product, the cross-section of the first through hole and the cross-section of the second through hole are opposite C-shapes.

[0016] To sum up, compared with the prior art, the extrusion device for the composite hollow three-dimensional fiber spinning machine of the present invention can simultaneously transmit two different materials through the transmission component. After the impurities are filtered out by the filtering component, the two different materials are respectively extruded from the first through hole and the second through hole on the spinneret by the extrusion component, so that the two materials produce different shrinkage amounts under the action of wind cooling at the same time, thereby improving the final fiber fluffiness, thereby improving the warmth retention and the device structure is compact. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 yes Figure 1 Explosion diagram of Figure 3 It is a structural schematic diagram of the feeding assembly of the present invention; Figure 4 yes Figure 3 A schematic cross-sectional structure diagram of ; Figure 5 yes Figure 3 Explosion diagram of Figure 6 It is a schematic diagram of the connection structure of the transmission component and the filtering component of the present invention; Figure 7 yes Figure 6 A schematic cross-sectional structure diagram of ; Figure 8 yes Figure 6 Explosion diagram of Fig. 9 is an exploded schematic diagram of the transmission shell of the present invention; Fig.10 It is a schematic structural diagram of the transition shell of the present invention; Fig.11 is a schematic diagram of the structure of the filter assembly of the present invention; Fig.12 yes Fig.11 Explosion diagram of Fig.13 It is a schematic diagram of the connection structure between the extrusion assembly and the spinneret of the present invention; Fig.14 yes Fig.13 A schematic cross-sectional structure diagram of ; Fig.15 yes Fig.13 Explosion diagram of Fig.16 It is a structural schematic diagram of the collection unit of the present invention; Fig.17 It is a schematic structural diagram of a spinneret of the present invention; Fig.18 yes Fig.17 Explosion diagram of Fig.19 yes Fig.17 Bottom view of In the figure: 1, frame; 11, upper horizontal plate; 12, lower horizontal plate; 13, support frame; 14, mounting seat; 15, support leg; 2, feeding assembly; 21, external silo; 211, external feed pipe; 2111, external sealing plug; 212, external feed pipe; 2121, external feed valve; 22, internal silo; 221, internal feed pipe; 2211, internal sealing plug; 222, internal discharge pipe; 2221, internal discharge valve; 23, internal stirring blade; 24, External stirring blade; 25, rotating unit; 251, rotating motor; 252, driving gear; 253, driven gear; 254, bearing; 3, transmission assembly; 31, transmission shell; 311, inner cylinder; 3111, inner transmission inlet; 312, outer cylinder; 3121, outer transmission inlet; 313, end plate; 3131, inner transmission outlet; 3132, outer transmission outlet; 32, inner spiral blade; 33, outer spiral blade; 331, rotating cylinder; 34. drive unit; 341. drive motor; 342. drive wheel; 343. driven wheel; 344. synchronous belt; 345. bushing; 35. heating tube; 351. heat-conducting cover; 36. transition shell; 361. inner transition barrel; 362. outer transition barrel; 363. inner transition pipe; 364. outer transition pipe; 37. rotating shaft; 371. sealing block; 38. heating rod; 4. filter assembly; 41. inner filter tube; 42. outer filter tube ; 43, inner filter; 44, outer filter; 45, bolt; 46, nut; 47, connecting frame; 5, extrusion assembly; 51, receiving shell; 511, inner receiving barrel; 512, outer receiving barrel; 513, inner connecting pipe; 514, outer connecting pipe; 515, filter screen; 516, cover plate; 52, reciprocating translation unit; 521, reciprocating motor; 522, turntable; 523, convex shaft; 524, reciprocating frame; 53, extrusion unit; 531, inner extrusion barrel; 532, outer extrusion barrel; 533, inner extrusion plate; 5331, inner slide bar; 534, outer extrusion plate; 5341, outer slide bar; 535, inner inlet check valve; 536, outer inlet check valve; 54, collection unit; 541, inner collection barrel; 542, outer collection barrel; 543, inner collection pipe; 544, outer collection pipe; 545, inner collection check valve; 546, outer collection check valve; 6, spinneret; 61, upper plate; 611, upper through hole; 62, connecting block; 621, middle through hole; 63, lower plate; 631, lower through hole; 64, first through hole; 65, second through hole. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] like Figure 1-Figure 19 As shown, an extrusion device for a composite hollow three-dimensional fiber spinning machine of the present invention comprises a frame 1, on which a feeding assembly 2, a transmission assembly 3, a filtering assembly 4, an extrusion assembly 5 and a spinneret 6 which are connected in sequence are arranged.

[0020] In the extrusion device of the present invention, a feeding component 2, a transmission component 3, a filtering component 4, an extrusion component 5 and a spinneret 6 are supported and fixed by a frame 1. After the feeding component 2 provides the material for producing the fiber to the transmission component 3, the transmission component 3 heats and melts the material, so that the molten material passes through the filtering component 4 to filter out impurities and then enters the extrusion component 5. The molten fiber material is extruded from under the spinneret 6 through the extrusion component 5. An air cooling device (not shown in the figure) is provided under the spinneret 6. While the molten fiber material is extruded under the spinneret 6, the air cooling device blows clean cold air to the molten fiber material, so that the fiber material is cooled and formed.

[0021] like Figure 1 and Figure 2 As shown, the frame 1 includes a horizontal upper cross plate 11 and a lower cross plate 12 horizontally arranged directly below the upper cross plate 11, a support leg 15 is fixedly arranged below the lower cross plate 12 to support the lower cross plate 12, the top surface of the lower cross plate 12 is fixedly connected to the bottom surface of the upper cross plate 11 through a support frame 13, and a mounting seat 14 is also fixed above one end of the lower cross plate 12, wherein the transmission component 3 is fixed above the upper cross plate 11, and the extrusion component 5 is fixedly connected to the mounting seat 14.

[0022] like Figure 3-Figure 5 As shown, the feeding assembly 2 includes an external silo 21 and an internal silo 22 arranged in the external silo 21, the top and bottom of the external silo 21 are respectively provided with an external feed pipe 211 and an external feed pipe 212, and the internal silo 22 is connected with an internal feed pipe 221 and an internal discharge pipe 222 which respectively pass through the top and bottom of the external silo 21.

[0023] The present invention fixes the inner silo 22 in the outer silo 21, ensuring the compactness of the structure of the feeding component 2. The inner silo 22 and the outer silo 21 facilitate storage of materials for producing two types of fibers, the inner feed pipe 221 and the outer feed pipe 211 facilitate the addition of the two types of materials, and the outer feed pipe 212 and the inner discharge pipe 222 facilitate the discharge of materials into the transmission component 3.

[0024] Specifically, the structures of the inner silo 22 and the outer silo 21 are similar, both are cylindrical in the upper part and conical in the lower part, the inner silo 22 and the outer silo 21 are coaxial, the inner discharge pipe 222 of the inner silo 22 is coaxial with the inner silo 22, the inner discharge pipe 222 extends downward and fixedly passes through the bottom of the outer silo 21 to achieve a relatively fixed connection between the inner silo 22 and the outer silo 21, the outer discharge pipe 212 is located below the side wall of the lower cone of the outer silo 21, and the inner discharge valve 2221 and the outer discharge valve 2121 are respectively provided on the inner discharge pipe 222 and the outer discharge pipe 212 to respectively control the discharge of materials in the inner silo 22 and the outer silo 21.

[0025] The top of the inner feed pipe 221 is threadedly connected to an inner sealing plug 2211, and the top of the outer feed pipe 211 is threadedly connected to an outer sealing plug 2111 to prevent debris in the external production environment from entering the outer bin 21 and the inner bin 22. The top of the outer feed pipe 211 is fixed to the top surface of the outer bin 21 and communicates with the inner cavity of the outer bin 21, and the axis of the outer feed pipe 211 deviates from the axis of the outer bin 21.

[0026] The inner feed pipe 221 passes through the top walls of the outer silo 21 and the inner silo 22 and is arranged to rotate around its own axis. The inner feed pipe 221 is coaxial with the inner silo 22. The inner feed pipe 221 is also fixed with an inner stirring blade 23 and an outer stirring blade 24. The inner stirring blade 23 is located in the inner silo 22, and the outer stirring blade 24 is located between the circumferential outer edge of the inner silo 22 and the circumferential inner wall of the outer silo 21. The feeding component 2 also includes a rotating unit 25. The rotating unit 25 drives the inner feed pipe 221 to rotate around its own axis. In this way, after the rotating unit 25 is started, it can drive the inner feed pipe 221 to rotate, so that the inner stirring blade 23 and the outer stirring blade 24 rotate, so that the materials in the inner silo 22 are evenly mixed, and the materials in the outer silo 21 are evenly mixed.

[0027] Specifically, the rotating unit 25 includes a rotating motor 251, which is arranged downward and fixed just above the outer material bin 21. The output end of the rotating motor 251 is coaxially connected with a driving gear 252, and the driving gear 252 is meshed with a driven gear 253. The inner feed pipe 221 is fixedly passed through the driven gear 253. A bearing 254 is arranged between the driven gear 253 and the top of the outer material bin 21. The outer ring of the bearing 254 is fixed to the top of the outer material bin 21, and the inner ring is fixedly connected to the driven gear 253. After the rotating motor 251 is started and drives the driving gear 252 to rotate, it acts on the driven gear 253. Under the support of the bearing 254, the inner feed pipe 221 rotates around its own axis, thereby driving the inner stirring blade 23 and the outer stirring blade 24 to rotate in the inner material bin 22 and the outer material bin 21 respectively.

[0028] like Figure 6-Figure 10As shown, the transmission component 3 includes a transmission shell 31, an inner spiral blade 32, a heating element, an outer spiral blade 33 and a driving unit 34. The transmission shell 31 is provided with an inner transmission inlet 3111 connected to the inner discharge pipe 222, an outer transmission inlet 3121 connected to the outer discharge pipe 212, and an inner transmission outlet 3131 and an outer transmission outlet 3132 both facing downward. The inner cavity of the transmission shell 31 includes an inner transmission cavity connected between the inner transmission inlet 3111 and the inner transmission outlet 3131 and horizontally, and an outer transmission cavity connected between the outer transmission inlet 3121 and the outer transmission outlet 3132 and horizontally. The inner transmission cavity is located on the inner side of the outer transmission cavity. The driving unit 34 drives the inner spiral blade 32 to rotate in the inner transmission cavity and drives the outer spiral blade 33 to rotate in the outer transmission cavity. The heating element is used to heat and melt the materials in the inner transmission cavity and the outer transmission cavity.

[0029] The axial direction of the transmission shell 31 is horizontal, as shown in FIG. Fig. 9 As shown, the transmission shell 31 includes a coaxial inner cylinder 311 and an outer cylinder 312, the inner cylinder 311 is located on the inner side of the outer cylinder 312, one end of the inner cylinder 311 is fixedly connected to one end of the outer cylinder 312 through a coaxial end plate 313, the inner transmission outlet 3131 is located at the center of the end plate 313, and the outer transmission outlets 3132 are distributed in a circular array with the center of the end plate 313 as the center; the inner transmission inlet 3111 is upwardly arranged above the other end of the inner cylinder 311 away from the end plate 313 and is connected to the inner cylinder 311. The inner feed pipe 221 is fixedly connected, the outer transmission inlet 3121 is upwardly arranged above the other end of the outer cylinder 312 away from the end plate 313 and is fixedly connected to the outer feed pipe 211, the inner transmission cavity is formed by the inner cylinder 311 and the end plate 313 and is connected to the inner transmission outlet 3131, and the outer transmission cavity is formed by the inner cylinder 311, the outer cylinder 312 and the end plate 313 and is connected to the outer transmission outlet 3132 to ensure the compactness of the structure of the transmission component 3, and the inner transmission cavity and the outer transmission cavity are coaxial.

[0030] The heating element includes a heating tube 35, the circumferential inner wall of the heating tube 35 is fixedly connected to the circumferential outer edge of the inner tube 311, the circumferential outer edge of the heating tube 35 is fixedly connected to a heat-conducting cover 351, the heat-conducting cover 351 and the inner tube 311 enclose a heat-conducting cavity, the heating tube 35 is filled in the heat-conducting cavity, the material in the inner transmission cavity is heated from the inside to melt it, and the material in the outer transmission cavity is heated from the outside to melt it, thereby facilitating the transmission of the material.

[0031] The inner spiral blade 32 is fitted with a clearance between the circumferential inner wall of the inner cylinder 311 and is fixedly connected with a rotating shaft 37 coaxially. The end of the rotating shaft 37 away from the end plate 313 is open, and a heating rod 38 is fixed in the rotating shaft 37. A sealing block 371 is also fixed at the end of the rotating shaft 37 away from the end plate 313 to seal the inner cavity of the rotating shaft 37. The heating rod 38 is preferably an electric heating rod. When the equipment is running, the heating rod 38 can heat the material in the inner transmission cavity from the inside.

[0032] The outer spiral blade 33 is fixedly connected to the rotating cylinder 331 coaxially. The circumferential inner wall of the rotating cylinder 331 is sealed with the circumferential outer edge of the heat conductive cover 351 , and the outer spiral blade 33 is sealed with the circumferential inner wall of the outer cylinder 312 .

[0033] In order to realize the transmission of materials in the inner transmission cavity and the outer transmission cavity, the driving unit 34 includes a driving motor 341 and two transmission units distributed along the axial direction of the inner transmission cavity. The two transmission units each include a driving wheel 342, a driven wheel 343 and a synchronous belt 344. The output end of the driving motor 341 is connected to the driving wheel 342 coaxially, and the driving wheel 342 is connected to the driven wheel 343 through the synchronous belt 344. The driven wheels 343 of the two transmission units are respectively connected to the inner spiral leaf 32 and the outer spiral leaf 33.

[0034] More specifically, in the driving unit 34, the driving motor 341 is fixed on the side wall of the outer cylinder 312, and its output end is fixedly connected to the driving wheels 342 in the two transmission units coaxially and connected to the shaft sleeve 345, the shaft sleeve 345 is fixed on the upper side of the upper horizontal plate 11, and the driven wheels 343 in the two transmission units are respectively fixedly sleeved coaxially on the rotating shaft 37 and the rotating cylinder 331. In this way, the driving motor 341 can simultaneously drive the two driving wheels 342 to rotate, and then drive the two driven wheels 343 to rotate through the synchronous belt 344, so that the rotating shaft 37 and the rotating cylinder 331 fixedly connected to the driven wheels 343 rotate, and then drive the inner spiral leaf 32 and the outer spiral leaf 33 to rotate.

[0035] A transition shell 36 is provided at the output end of the transmission shell 31, and the transition shell 36 includes an inner transition barrel 361 and an outer transition barrel 362. The end of the inner transition barrel 361 adjacent to the transmission shell 31 and the end of the outer transition barrel 362 adjacent to the transmission shell 31 are both open, and the bottom end of the outer transition barrel 362 is fixedly connected to an outer transition pipe 364, and the bottom end of the inner transition barrel 361 is fixedly connected to an inner transition pipe 363 located on the inner side of the outer transition pipe 364.

[0036] The filter assembly 4 is detachably arranged between the transmission assembly 3 and the extrusion assembly 5. The filter assembly 4 includes an inner filter tube 41 and an outer filter tube 42 both facing downward. The inner filter tube 41 is located inside the outer filter tube 42. An inner filter element 43 is arranged inside the inner filter tube 41 and an outer filter element 44 is arranged between the inner filter tube 41 and the outer filter tube 42. The top of the inner filter tube 41 and the top of the outer filter tube 42 are respectively connected to the inner transmission outlet 3131 and the outer transmission outlet 3132. The inner transition tube 363 and the outer transition tube 364 are detachably connected to the inner filter tube 41 and the outer filter tube 42, respectively.

[0037] Specifically, the inner transition barrel 361 and the outer transition barrel 362 are both fixedly connected to the end plate 313, and the output direction of the materials in the inner transmission chamber and the outer transmission chamber is changed through the transition shell 36, so that the materials flow downward.

[0038] like Fig.14 As shown, the extrusion assembly 5 includes a receiving shell 51, which includes an inner receiving barrel 511 connected to the bottom of the inner filter tube 41 and open at the top, and an outer receiving barrel 512 connected to the bottom of the outer filter tube 42 and open at the top, and the inner receiving barrel 511 is located on the inner side of the outer receiving barrel 512.

[0039] After adopting the above structure, after the two materials pass through the inner transmission cavity and the outer transmission cavity of the transmission shell 31, one of the materials enters and passes through the inner transition tube 363, and then enters the inner filter tube 41, and the inner filter element 43 is used to filter impurities in the material, so that the clean fiber production material enters the inner receiving barrel 511, and at the same time, the other material enters and passes through the outer transition tube 364, and then enters the outer filter tube 42, and the outer filter element 44 is used to filter impurities in the material, so that the clean fiber production material enters the outer receiving barrel 512.

[0040] like Fig.11 and Fig.12 As shown, the inner filter tube 41 and the outer filter tube 42 are coaxial circular tubes, the circumferential outer edge of the inner filter tube 41 is fixedly connected to the circumferential inner wall of the outer filter tube 42 through a connecting frame 47, the inner filter element 43 and the outer filter element 44 are both barrel-shaped filter screens, and the outer diameter of the inner filter element 43 is smaller than the inner diameter of the inner filter tube 41, and the outer diameter of the outer filter element 44 is smaller than the inner diameter of the outer filter tube 42. The top circumferential outer edge of the inner filter element 43 is provided with an inner connecting ring fixedly connected to the circumferential inner wall of the inner filter tube 41, and the top circumferential outer edge of the outer filter element 44 is provided with an inner connecting ring fixedly connected to the circumferential inner wall of the inner filter tube 41. An external connecting ring is fixedly connected to the circumferential inner wall of the filter tube 42, so that there is a certain gap between the inner filter element 43 and the circumferential inner wall of the inner filter tube 41, which is convenient for the passage of materials, and the inner filter element 43 can accommodate a certain amount of impurities, and there is a certain gap between the outer filter element 44 and the circumferential inner wall of the outer filter tube 42, which is convenient for the passage of another material, and the outer filter element 44 can accommodate a certain amount of impurities, thus reducing the removal, cleaning and installation cycle of the filter assembly 4, reducing the workload of workers, and also increasing the structural compactness of the filter assembly 4.

[0041] In order to ensure the detachable connection between the filter assembly 4 and the transition shell 36 and the receiving shell 51, the circumferential outer edge of the bottom end of the outer transition tube 364 and the circumferential outer wall of the top end of the outer receiving barrel 512 are respectively provided with a first outer flange and a fourth outer flange, and the circumferential outer edges of the top and bottom ends of the outer filter tube 42 are respectively provided with a second outer flange and a third outer flange, and the first outer flange and the second outer flange, as well as the third outer flange and the fourth outer flange are fixedly connected by threaded bolts 45 and nuts 46.

[0042] like Figure 13-Figure 16 As shown, the extrusion assembly 5 also includes a reciprocating translation unit 52, an extrusion unit 53 and a collection unit 54 connected in sequence. The extrusion unit 53 includes an inner extrusion barrel 531, an outer extrusion barrel 532, an inner extrusion plate 533 and an outer extrusion plate 534. The inner extrusion barrel 531 is fixed to the inner side of the outer extrusion barrel 532 and the two barrels are in the length direction. The circumferential outer edge of the inner extrusion plate 533 is fixedly connected to the circumferential inner wall of the inner extrusion barrel 531. The outer extrusion plate 534 is sealed and fitted between the inner extrusion barrel 531 and the outer extrusion barrel 532. The inner extrusion barrel 531 is connected to the inner receiving barrel 511 and an inner inlet check valve 535 is arranged between the two. The outer extrusion barrel 532 is connected to the outer receiving barrel 512 and an outer inlet check valve 535 is arranged between the two. 6. The reciprocating translation unit 52 drives the inner extrusion plate 533 and the outer extrusion plate 534 to reciprocate along the length direction of the inner extrusion barrel 531; the collecting unit 54 includes a collecting shell, an inner collecting pipe 543 and an outer collecting pipe 544, the inner collecting pipe 543 is located on the inner side of the outer collecting pipe 544, the spinneret 6 is covered on the bottom of the collecting shell and is enclosed with the collecting shell to form a first collecting chamber and a second collecting chamber, the inner collecting pipe 543 and the inner collecting chamber are connected to the inner extrusion barrel 531 and the first through hole 64 in sequence, the outer collecting pipe 544 and the outer collecting chamber are connected to the outer extrusion barrel 532 and the second through hole 65 in sequence; the inner collecting pipe 543 and the outer collecting pipe 544 are respectively connected to an inner collecting one-way valve 545 and an outer collecting one-way valve 546.

[0043] The above design increases the compactness of the structure of the extrusion assembly 5. In the extrusion assembly 5, the inner receiving barrel 511 is fixedly connected to the inner extrusion barrel 531 through the inner connecting pipe 513, and the outer receiving barrel 512 is fixedly connected to the outer extrusion barrel 532 through the outer connecting pipe 514. The inner inlet check valve 535 and the outer inlet check valve 536 are respectively arranged on the inner connecting pipe 513 and the outer connecting pipe 514 to limit the flow direction of materials in the inner connecting pipe 513 and the outer connecting pipe 514, so that the material in the inner receiving barrel 511 can enter the inner extrusion barrel 531 through the inner connecting pipe 513, and the material in the outer receiving barrel 512 can enter the outer extrusion barrel 532 through the outer connecting pipe 514. The outer extrusion barrel 532 is horizontally fixed above the mounting seat 14. Similarly, the inner collecting check valve 545 and the outer collecting check valve 546 limit the flow direction of the material, so that the material in the inner extrusion barrel 531 and the material in the outer extrusion barrel 532 can enter the collecting unit 54.

[0044] In the present invention, two extrusion units 53 are provided and are arranged opposite to each other along the moving direction of the output end of the reciprocating translation unit 52; the inner extrusion plate 533 and the outer extrusion plate 534 are both electric heating plates.

[0045] Specifically, the reciprocating translation unit 52 is arranged between the two extrusion units 53, and the two extrusion units 53 are arranged back to back, so that when the output end of the reciprocating translation unit 52 moves in any direction, one extrusion unit 53 receives the material from the receiving shell 51, and the other extrusion unit 53 can extrude the material into the collecting unit 54, and the inner extrusion plate 533 and the outer extrusion plate 534 are both electric heating plates, which can heat and keep the materials in the inner extrusion barrel 531 and the outer extrusion barrel 532 warm, so as to avoid the cooling and solidification of the material fibers during the long-term flow process, and keep the material in a molten state by heating and keeping warm, so as to facilitate the flow of the material.

[0046] Specifically, the reciprocating translation unit 52 includes a reciprocating motor 521 fixed below the receiving shell 51 and downward, a turntable 522 coaxially fixed to the bottom end of the output shaft of the reciprocating motor 521, a convex shaft 523 fixed to the bottom surface of the turntable 522 and extending downward from the edge of the turntable 522, and a reciprocating frame 524 sleeved on the convex shaft 523, the length direction of the reciprocating frame 524 is consistent with the axial direction of the transmission shell 31, and the convex shaft 523 fits between the two inner side walls of the frame opening of the reciprocating frame 524; the inner extrusion plate 533 and the outer extrusion plate 534 are respectively connected with the inner sliding rod 5331 and the outer sliding rod 5341, the adjacent ends of the inner extrusion barrel 531 and the outer extrusion barrel 532 are fixedly connected by the cover plate 516, and the inner sliding rod 5331 and the outer sliding rod 5341 are slidably penetrated on the cover plate 516 and fixedly connected to the reciprocating frame 524.

[0047] In this way, when the reciprocating motor 521 drives the turntable 522 to rotate, the convex shaft 523 rotates with the axis of the turntable 522 as the center line, acting on the reciprocating frame 524, so that the reciprocating frame 524 drives the inner extrusion plate 533 and the outer extrusion plate 534 on the same side to move at the same speed and in the same direction through the inner sliding bar 5331 and the outer sliding bar 5341, thereby driving the inflow and outflow operations of the materials in the inner extrusion barrel 531 and the outer extrusion barrel 532.

[0048] The cover plate 516 is provided with ventilation holes, which are connected to the inner cavities of the inner extrusion barrel 531 and the outer extrusion barrel 532 . A filter net 515 is provided in the ventilation holes to prevent external dust and impurities from entering the inner extrusion barrel 531 and the outer extrusion barrel 532 while ensuring air flow.

[0049] like Figure 14-Figure 19As shown, the spinneret 6 is horizontally arranged, and the spinneret 6 is densely covered with spinneret units, and the spinneret units include a first through hole 64 and a second through hole 65 that are adjacent to each other, and the first through hole 64 and the second through hole 65 both extend in the vertical direction, and the extrusion assembly 5 is used to squeeze the material passing through the inner filter tube 41 and the material passing through the outer filter tube 42 into the first through hole 64 and the second through hole 65 from top to bottom respectively; the collecting shell includes an outer collecting barrel 542 and an inner collecting barrel 541 fixed in the outer collecting barrel 542, and the spinneret 6 includes The upper plate 61, the connecting block 62 and the lower plate 63 are fixedly connected in sequence from top to bottom, the fixed cover of the upper plate 61 is arranged at the bottom of the inner collecting barrel 541, the fixed cover of the lower plate 63 is arranged at the bottom of the outer collecting barrel 542, the second through hole 65 is arranged on the lower plate 63, the upper through hole 611, the middle through hole 621 and the lower through hole 631 are respectively arranged on the upper plate 61, the connecting block 62 and the lower plate 63, the upper through hole 611, the middle through hole 621 and the lower through hole 631 are connected in sequence to form the first through hole 64.

[0050] Under the action of the reciprocating translation unit 52, the material in the inner extrusion barrel 531 passes through the inner collecting pipe 543 and enters the inner collecting barrel 541, and then flows out through the upper through hole 611 of the upper plate 61 in the spinneret 6, the middle through hole 621 of the connecting block 62 and the lower through hole 631 of the lower plate 63, that is, flows out through the first through hole 64, and the material in the outer extrusion barrel 532 passes through the outer collecting pipe 544 and enters the outer collecting barrel 542, and then directly flows downward from the second through hole 65 on the lower plate 63. Finally, the extrusion device extrude multiple pairs of fibers of two different materials at the same time. A wind cooling device can be set under the spinneret 6 to blow cold air on the two pairs of fibers of different materials, so that the fibers of the two materials solidify and shrink when cooled, and produce different shrinkage amounts. Then, the two fibers are collected to obtain composite central control three-dimensional fiber filaments.

[0051] A further improvement is that the cross section of the first through hole 64 and the cross section of the second through hole 65 are opposite C-shaped. With this design, the shrinkage of the two fibers in the molten state after being cooled can be further increased, so that after winding, the two fibers are composited and connected into a more fluffier fiber filament, ensuring the fluffiness of the composite fiber, which is conducive to enhancing the warmth retention of household products made using the composite fiber.

[0052] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. An extrusion device for a composite hollow three-dimensional fiber spinning machine, comprising a frame, on which a feeding assembly, a transmission assembly, a filtering assembly, an extrusion assembly and a spinneret are sequentially connected, characterized in that: The feeding assembly includes an outer silo and an inner silo arranged in the outer silo, the top and bottom of the outer silo are respectively provided with an outer feeding pipe and an outer feeding pipe, and the inner silo is connected with an inner feeding pipe and an inner discharging pipe respectively penetrating the top and bottom of the outer silo; The transmission assembly includes a transmission shell, an inner spiral blade, a heating element, an outer spiral blade and a driving unit. The transmission shell is provided with an inner transmission inlet connected to the inner discharge pipe, an outer transmission inlet connected to the outer discharge pipe, and an inner transmission outlet and an outer transmission outlet both facing downward. The inner cavity of the transmission shell includes an inner transmission cavity connected between the inner transmission inlet and the inner transmission outlet and horizontally, and an outer transmission cavity connected between the outer transmission inlet and the outer transmission outlet and horizontally. The inner transmission cavity is located on the inner side of the outer transmission cavity. The driving unit drives the inner spiral blade to rotate in the inner transmission cavity and drives the outer spiral blade to rotate in the outer transmission cavity. The heating element is used to heat and melt the materials in the inner transmission cavity and the outer transmission cavity. The filter assembly is detachably arranged between the transmission assembly and the extrusion assembly, and the filter assembly comprises an inner filter tube and an outer filter tube both facing downward, the inner filter tube is located on the inner side of the outer filter tube, an inner filter element is arranged inside the inner filter tube, and an outer filter element is arranged between the inner filter tube and the outer filter tube, and the top end of the inner filter tube and the top end of the outer filter tube are respectively connected to the inner transmission outlet and the outer transmission outlet; The spinneret is arranged horizontally, and the spinneret is densely covered with spinneret units, and the spinneret units include a first through hole and a second through hole adjacent to each other, and the first through hole and the second through hole both extend in a vertical direction, and the extrusion assembly is used to extrude the material passing through the inner filter tube and the material passing through the outer filter tube into the first through hole and the second through hole from top to bottom, respectively.

2. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 1, characterized in that: The heating element includes a heating cylinder which is arranged between the inner spiral blade and the outer spiral blade and is coaxial with the inner transmission cavity and the outer transmission cavity. The driving unit includes a driving motor and two transmission units distributed along the axial direction of the inner transmission cavity. The two transmission units each include a driving wheel, a driven wheel and a synchronous belt. The output end of the driving motor is connected to the driving wheel coaxially. The driving wheel is connected to the driven wheel through the synchronous belt. The driven wheels of the two transmission units are respectively connected to the inner spiral blade and the outer spiral blade.

3. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 2, characterized in that: A transition shell is provided at the output end of the transmission shell, and the transition shell includes an inner transition barrel and an outer transition barrel, and one end of the inner transition barrel adjacent to the transmission shell and one end of the outer transition barrel adjacent to the transmission shell are both open, and the bottom end of the outer transition barrel is fixedly connected to an outer transition pipe, and the bottom end of the inner transition barrel is fixedly connected to an inner transition pipe located on the inner side of the outer transition pipe, and the inner transition pipe and the outer transition pipe are detachably connected to the inner filter pipe and the outer filter pipe respectively; the extrusion assembly includes a receiving shell, and the receiving shell includes an inner receiving barrel connected to the bottom of the inner filter pipe and open at the top, and an outer receiving barrel connected to the bottom of the outer filter pipe and open at the top, and the inner receiving barrel is located on the inner side of the outer receiving barrel.

4. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 3, characterized in that: The top end and the bottom end of the filter assembly are respectively connected to the transition shell and the receiving shell through threaded bolts and nuts.

5. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 3, characterized in that: The extrusion assembly also includes a reciprocating translation unit, an extrusion unit and a collecting unit connected in sequence, the extrusion unit includes an inner extrusion barrel, an outer extrusion barrel, an inner extrusion plate and an outer extrusion plate, the inner extrusion barrel is fixed to the inner side of the outer extrusion barrel and the two barrels are in the length direction, the circumferential outer edge of the inner extrusion plate is fixedly connected to the circumferential inner wall of the inner extrusion barrel, the outer extrusion plate is sealed and fitted between the inner extrusion barrel and the outer extrusion barrel, the inner extrusion barrel is connected to the inner receiving barrel and an inner inlet check valve is arranged between the two, the outer extrusion barrel is connected to the outer receiving barrel and an outer inlet check valve is arranged between the two, and the reciprocating translation unit drives the inner extrusion plate and the outer extrusion plate to reciprocate along the length direction of the inner extrusion barrel.

6. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 5, characterized in that: The extrusion units are provided with two and are arranged opposite to or in opposition to each other along the moving direction of the output end of the reciprocating translation unit.

7. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 5, characterized in that: The inner extrusion plate and the outer extrusion plate are both electric heating plates.

8. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 5, characterized in that: The collecting unit includes a collecting shell, an inner collecting pipe and an outer collecting pipe, the inner collecting pipe is located on the inner side of the outer collecting pipe, the spinneret cover is arranged at the bottom of the collecting shell and is enclosed with the collecting shell to form a first collecting chamber and a second collecting chamber, the inner collecting pipe and the inner collecting chamber are sequentially connected between the inner extrusion barrel and the first through hole, and the outer collecting pipe and the outer collecting chamber are sequentially connected between the outer extrusion barrel and the second through hole; the inner collecting pipe and the outer collecting pipe are respectively connected with an inner collecting one-way valve and an outer collecting one-way valve.

9. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 8, characterized in that: The collecting shell includes an outer collecting barrel and an inner collecting barrel fixed in the outer collecting barrel, the spinneret includes an upper plate, a connecting block and a lower plate fixedly connected in sequence from top to bottom, the upper plate fixing cover is arranged at the bottom of the inner collecting barrel, the lower plate fixing cover is arranged at the bottom of the outer collecting barrel, the second through hole is arranged on the lower plate, the upper plate, the connecting block and the lower plate are respectively provided with an upper through hole, a middle through hole and a lower through hole, the upper through hole, the middle through hole and the lower through hole are connected in sequence to form the first through hole.

10. The extrusion device for a composite hollow three-dimensional fiber spinning machine according to claim 9, characterized in that: The cross-section of the first through hole and the cross-section of the second through hole are opposite C-shapes.

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