Hollow spindle head and spinning box

Abstract

The utility model discloses a hollow spindle head and a spinning box, which relate to the technical field of textile, and comprise a central tube and a conical head which are coaxially arranged, the conical head is provided with an inner cavity and an upper opening communicated with the inner cavity; the central pipe is positioned in the inner cavity; one end of the central tube is fixedly connected with one end of the conical head, and the other end of the central tube extends out of the upper opening; the central pipe is provided with a through first central channel, and a lower end opening of the first central channel is used for allowing a straight fiber bundle to enter; a gas accommodating cavity is formed in a space between the inner wall of the inner cavity and the outer wall of the central pipe; the gas accommodating cavity is used for injecting gas; the outer side wall of the end, away from the upper opening, of the conical head is provided with a plurality of first rotating air channels. Gas located in the gas containing cavity flows out through the first rotating gas channels, and the rotating direction of the gas flowing out is the same as the rotating direction of rotating gas flow used for twisting on the outer side wall of the conical head. The maintenance cost of the hollow spindle head is reduced, a good twisting effect is guaranteed, and fiber wrapping is accelerated.

Description

Technical Field

[0001] The utility model relates to the technical field of textiles, in particular to a hollow spindle and a spinning box. Background Art

[0002] Vortex spinning, also known as air jet spinning, is a spinning technology that is improved on the basis of air jet spinning (MJS) and is particularly suitable for spinning pure cotton. This spinning technology was originally developed by Murata Company in Japan and has been widely used in the textile industry.

[0003] The straight fiber bundle in the previous process is pulled into the spinning box by the traction unit, and its head end enters the hollow spindle to form a yarn core. The free tail end of the fiber bundle falls on the conical outer wall of the hollow spindle and rotates at high speed with the rotating airflow to be twisted into yarn.

[0004] Since the attachment and rotation of the fiber will aggravate the wear on the conical outer wall of the hollow spindle, the maintenance cost of the hollow spindle is high and the twisting effect is reduced. Utility Model Content

[0005] The purpose of the utility model is to provide a hollow spindle and a spinning box to solve the problems existing in the above-mentioned prior art, reduce the maintenance cost of the hollow spindle, ensure a good twisting effect, and accelerate fiber wrapping.

[0006] To achieve the above purpose, the utility model provides the following solutions:

[0007] The utility model provides a hollow spindle head, comprising a coaxially arranged center tube and a conical head; the conical head has an inner cavity and an upper opening connected to the inner cavity; the center tube is located in the inner cavity; one end of the center tube is fixedly connected to one end of the conical head, and the other end of the center tube extends out of the upper opening; the center tube has a first central channel running through it, and the lower end opening of the first central channel is used for the entry of straight fiber bundles; the space between the inner wall of the inner cavity and the outer wall of the center tube forms a gas accommodating cavity; the gas accommodating cavity is used for injecting gas; a plurality of first rotational air channels are arranged on the outer side wall of the conical head away from the upper opening; the gas located in the gas accommodating cavity flows out through each of the first rotational air channels, and the rotational direction of the gas after flowing out is the same as the rotational direction of the rotating airflow on the outer side wall of the conical head used for twisting.

[0008] The utility model also provides a spinning box, comprising an outer cylinder, a diffuser, an outer sleeve, a receiving plate, an air jet head and the hollow spindle head as described above; in the axial direction of the outer cylinder, the diffuser, the receiving plate, the hollow spindle head and the air jet head are arranged in sequence from top to bottom; the outer cylinder has a accommodating cavity inside, and the upper end of the outer cylinder is provided with a wire outlet hole, an exhaust channel and an air inlet channel; the diffuser is located in the accommodating cavity, the diffuser has a second central channel, and a plurality of through holes are opened on the side wall of the diffuser, each of the through holes is connected to the second central channel, and the upper end of the second central channel is connected and connected to the wire outlet hole; the outer sleeve is sleeved on the outside of the diffuser, and the outer sleeve can isolate the communication between the diffuser and the accommodating cavity; the interior of the outer sleeve is connected to the exhaust channel; the cavity between the outside of the outer sleeve and the inside of the outer cylinder is connected to The air inlet channel is connected; the receiving plate is fixedly arranged in the inner cavity of the hollow spindle head, and the lower end of the outer sleeve is placed on the receiving plate; the outer diameter of the receiving plate is larger than the outer diameter of the outer sleeve; a plurality of connecting holes are arranged on the receiving plate, and the cavity between the outside of the outer sleeve and the inside of the outer cylinder body can be connected with the gas containing cavity through each of the connecting holes; the upper end of the conical head of the hollow spindle head is fixedly connected to the outer cylinder body; the upper end of the center tube of the hollow spindle head is connected and connected with the lower end of the second center channel of the diffuser; the nozzle head is located below the conical head of the hollow spindle head, and the nozzle head is used to provide a rotating airflow blowing onto the outer side wall of the conical head; and an entry channel for the straight fiber bundle to pass through is arranged below the nozzle head, and the straight fiber bundle can enter the lower end opening of the center tube of the hollow spindle head through the entry channel.

[0009] Preferably, the outer cylinder body comprises an upper cover and a spindle outer cylinder; the upper cover is provided with the wire outlet hole, the exhaust passage and the air inlet passage; the spindle outer cylinder has a storage cavity inside, and the upper end of the spindle outer cylinder has a connecting port connected to the storage cavity, and the lower end of the spindle outer cylinder has a through-port connected to the storage cavity; an outer convex ring is fixedly provided on the upper end outer wall of the conical head of the hollow spindle head, the outer diameter of the outer convex ring is larger than the inner diameter of the through-port, and the outer diameter of the upper end of the conical head is the same as the inner diameter of the through-port; the connecting port of the spindle outer cylinder has an internal thread, and the outer lateral wall of the lower end of the upper cover has an external thread, and the internal thread is threadedly connected to the external thread; the lower end of the upper cover is provided with a placement groove connected to the wire outlet hole, and the upper ends of the diffuser and the outer sleeve are both located in the placement groove.

[0010] Preferably, sealing rings are provided at the connection between the upper end of the diffuser tube and the wire outlet hole, and at the connection between the lower end of the diffuser tube and the upper end of the central tube of the hollow spindle head.

[0011] Preferably, it also includes a spinning box seat, which has a hollow cavity that penetrates through it, and the outer cylinder, the hollow spindle head and the nozzle are all arranged in the hollow cavity; the nozzle head has a third central channel, and a plurality of second rotational air channels are arranged on the side wall of the nozzle head, and the spinning box seat is provided with an air intake cavity corresponding to the position of the nozzle head having each second rotational air channel, and the inner diameter of the air intake cavity is larger than the outer diameter of the nozzle head; the spinning box seat is provided with a main air inlet connected with the air intake cavity; the gas is blown toward the conical head through each of the second rotational air channels and forms a rotating airflow for twisting on the outer side wall of the conical head.

[0012] Preferably, a negative pressure dust removal channel is provided on the spinning box seat at a position corresponding to the conical head.

[0013] Preferably, the communicating holes are semicircular holes, and the communicating holes are evenly arranged on the circumferential edge of the receiving plate.

[0014] Compared with the prior art, the utility model has achieved the following technical effects:

[0015] The hollow spindle head provided by the utility model can form a rotary airflow on the outer wall of the conical head through the arrangement of each first rotary air channel, and the gas flowing out from the first rotary air channel has the same rotary direction as the rotary airflow used to rotate and wrap the inverted end of the straight fiber bundle, thereby forming an airflow layer attached to the outer wall of the conical head on the outer wall of the conical head; the rotary airflow can make the tail end of the straight fiber bundle fall on the outer wall of the conical head of the hollow spindle and make a rotary motion, thereby being wrapped around the core layer of the straight limiting bundle; and the airflow layer formed on the outer wall of the conical head can prevent the tail end of the inverted straight fiber bundle from being tightly attached to the outer wall of the conical head, thereby reducing the contact friction between the tail end of the inverted straight fiber bundle and the outer wall of the conical head, reducing the wear on the conical head, enhancing the durable use of the hollow spindle head, reducing the maintenance cost of the hollow spindle head, and ensuring a good twisting effect; the airflow layer with the same rotary direction as the rotary airflow used for twisting can accelerate the wrapping of the fibers, increase the strength of the yarn, and improve the appearance of the yarn.

[0016] The spinning box provided by the utility model adopts a structural setting that can reduce the wear of the hollow spindle head, thereby improving the durable use of the hollow spindle head, reducing maintenance costs, and ensuring a good twisting effect; the airflow that follows the yarn upward in the central tube of the hollow spindle head can be discharged through the diffuser and the exhaust channel, thereby reducing the gas that follows the yarn outflowing from the outlet hole, reducing the blowing of the gas outflow here on the yarn appearance, and ensuring the external stability of the yarn at the outlet hole.

[0017] Furthermore, the outer cylinder body is composed of an upper cover and a spindle outer cylinder, and the internal parts are crimped therein by screw connection, so the installation is simple and convenient, and the connection is more stable and reliable.

[0018] Furthermore, the provision of the sealing ring enables all the gas entering from the air inlet passage to flow out from each first rotary air passage of the conical head, thereby ensuring that the airflow layer formed on the outer side wall of the conical head is more stable and reliable.

[0019] Furthermore, the arrangement of the spinning box seat can make the relative positions of the various components more stable, and ensure that the interior thereof is not affected by other equipment, thereby ensuring the continuous and stable operation of the internal twisting process.

[0020] Furthermore, the provision of the negative pressure dust removal channel enables the fibers that have escaped from twisting to be discharged in a timely manner, thereby preventing them from affecting the stable production of the yarn.

[0021] Furthermore, a plurality of semicircular holes are provided on the circumferential edge of the receiving plate, so that the gas entering the gas containing cavity is more uniform, and the gas flowing out of each first swirling air passage is also more uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A schematic diagram of the overall structure of the hollow spindle head provided by the utility model;

[0024] Figure 2 A schematic diagram of the internal structure of the hollow spindle head provided by the utility model;

[0025] Figure 3 A schematic diagram of the overall structure of the spinning box provided by the utility model;

[0026] Figure 4 An exploded view of the structure of the spinning box provided by the utility model;

[0027] Figure 5 A schematic diagram of the internal structure of the spinning box provided by the utility model;

[0028] Figure 6 This is a schematic diagram of the internal structure of the spinning box provided by the utility model without the spinning box seat.

[0029] In the figure:

[0030] 100-spinning box;

[0031] 10-upper cover; 11-wire outlet hole; 12-exhaust channel; 13-intake channel; 14-placement slot; 141-first shelf slot; 142-second shelf slot;

[0032] 20-spindle outer cylinder; 21-storage cavity; 22-connection port; 23-through port;

[0033] 30- diffuser pipe; 31- second central channel; 32- through hole;

[0034] 40-outer sleeve;

[0035] 50- receiving plate; 51- communicating hole;

[0036] 60-hollow ingot head; 61-center tube; 611-first center channel; 62-conical head; 63-gas containing cavity; 64-first rotational air channel; 65-external convex ring;

[0037] 70-jet nozzle; 71-second rotary airway;

[0038] 80-spinning box seat; 81-air inlet cavity; 82-main air inlet; 83-negative pressure dust removal channel;

[0039] 90-Seal ring. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0041] The utility model aims to provide a hollow spindle and a spinning box to solve the problems existing in the prior art, reduce the maintenance cost of the hollow spindle, ensure a good twisting effect, and accelerate fiber wrapping.

[0042] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Embodiment 1

[0044] This embodiment provides a hollow spindle head 60, such as Figure 1-2As shown, it includes a coaxially arranged center tube 61 and a conical head 62; the conical head 62 has an inner cavity and an upper opening connected to the inner cavity; the center tube 61 is located in the inner cavity; one end of the center tube 61 is fixedly connected to one end of the conical head 62, and the other end of the center tube 61 extends out of the upper opening; the center tube 61 has a first center channel 611 running through it, and the lower end opening of the first center channel 611 is used for the entry of straight fiber bundles; the space between the inner wall of the inner cavity and the outer wall of the center tube 61 forms a gas accommodating cavity 63; the gas accommodating cavity 63 is used for injecting gas; a plurality of first rotational air channels 64 are arranged on the outer side wall of the conical head 62 away from the upper opening; the gas located in the gas accommodating cavity 63 flows outward through each first rotational air channel 64, and the rotation direction of the gas after flowing out is the same as the rotation direction of the rotating airflow used for twisting on the outer side wall of the conical head 62.

[0045] By setting each first swirl air channel 64, the gas flowing out of the first swirl air channel 64 can form a swirl airflow on the outer wall of the conical head 62, which has the same swirl direction as the swirl airflow used to rotate and wrap the falling end of the straight fiber bundle, thereby forming an airflow layer attached to the outer wall of the conical head 62 on the outer wall of the conical head 62; the swirl airflow can make the tail end of the straight fiber bundle fall on the outer wall of the conical head 62 of the hollow spindle head 60 and rotate, thereby wrapping around the core layer of the straight limit bundle; and the conical head 60 is provided with a swirl airflow, and the swirl airflow ... The air flow layer formed on the outer wall of the conical head 62 can prevent the tail end of the fallen straight fiber bundle from being tightly attached to the outer wall of the conical head 62, thereby reducing the contact friction between the tail end of the fallen straight fiber bundle and the outer wall of the conical head 62, reducing the wear on the conical head 62, enhancing the durability of the hollow spindle head 60, reducing the maintenance cost of the hollow spindle head 60, and ensuring a good twisting effect; the air flow layer with the same rotation direction as the rotating airflow used for twisting can accelerate the fiber wrapping, increase the yarn strength, and improve the yarn appearance.

[0046] Embodiment 2

[0047] This embodiment provides a spinning box 100, such as Figure 1 to Figure 6As shown, it includes an outer cylinder, a diffuser 30, an outer sleeve 40, a receiving plate 50, a nozzle 70 and a hollow spindle head 60 as in the first embodiment; in the axial direction of the outer cylinder, the diffuser 30, the receiving plate 50, the hollow spindle head 60 and the nozzle head 70 are arranged in sequence from top to bottom; the outer cylinder has a receiving cavity inside, and the upper end of the outer cylinder is provided with a wire outlet hole 11, an exhaust channel 12 and an intake channel 13; the diffuser 30 is located in the receiving cavity, and the diffuser 30 has The second central channel 31 is provided, and a plurality of through holes 32 are provided on the side wall of the diffuser 30, each through hole 32 is connected to the second central channel 31, and the upper end of the second central channel 31 is connected and connected to the outlet hole 11; the outer sleeve 40 is sleeved on the outside of the diffuser 30, and the outer sleeve 40 can isolate the communication between the diffuser 30 and the accommodating cavity; the inside of the outer sleeve 40 is connected to the exhaust channel 12; the space between the outer sleeve 40 and the inner part of the outer cylinder is The cavity is connected with the air inlet channel 13; the receiving plate 50 is fixedly arranged in the inner cavity of the hollow spindle head 60, and the lower end of the outer sleeve 40 is placed on the receiving plate 50; the outer diameter of the receiving plate 50 is larger than the outer diameter of the outer sleeve 40; a plurality of connecting holes 51 are arranged on the receiving plate 50, and the cavity between the outer sleeve 40 and the inner part of the outer cylinder can be connected with the gas containing cavity 63 through each connecting hole 51; the upper end of the conical head 62 of the hollow spindle head 60 is fixedly connected with the outer cylinder; the upper end of the central tube 61 of the hollow spindle head 60 is connected and connected with the lower end of the second central channel 31 of the diffuser 30; the nozzle 70 is located below the conical head 62 of the hollow spindle head 60, and the nozzle 70 is used to provide a rotating airflow blowing onto the outer wall of the conical head 62; and an entry channel for the straight fiber bundle to pass through is arranged below the nozzle 70, and the straight fiber bundle can enter the lower end opening of the central tube 61 of the hollow spindle head 60 through the entry channel. By adopting a structural setting that can reduce the wear of the hollow spindle head 60, the durability of the hollow spindle head 60 is improved, the maintenance cost is reduced, and a good twisting effect is guaranteed; the airflow that follows the yarn upward in the central tube 61 of the hollow spindle head 60 can be discharged through the diffuser 30 and the exhaust channel 12, thereby reducing the gas that follows the yarn outflowing from the outlet hole 11, reducing the blowing of the gas outflow here on the yarn appearance, and ensuring the external stability of the yarn at the outlet hole 11.

[0048] Among them, about the structure of the outer cylinder:

[0049] Among the optional solutions of this embodiment, it is more preferred that Figures 4 to 6As shown, the outer cylinder body includes an upper cover 10 and a spindle outer cylinder 20; the upper cover 10 is provided with a wire outlet hole 11, an exhaust channel 12 and an intake channel 13; the spindle outer cylinder 20 has a storage cavity 21 inside, and the upper end of the spindle outer cylinder 20 has a connecting port 22 connected to the storage cavity 21, and the lower end of the spindle outer cylinder 20 has a through port 23 connected to the storage cavity 21; the upper end outer wall of the conical head 62 of the hollow spindle head 60 is fixed with an outer The outer diameter of the outer convex ring 65 is larger than the inner diameter of the through hole 23, and the outer diameter of the upper end of the conical head 62 is the same as the inner diameter of the through hole 23; the connection port 22 of the spindle outer cylinder 20 has an internal thread, and the outer wall of the lower end of the upper cover 10 has an external thread, and the internal thread is threadedly connected with the external thread; the lower end of the upper cover 10 is provided with a placement groove 14 connected to the outlet hole 11, and the upper ends of the diffuser 30 and the outer sleeve 40 are both located in the placement groove 14. The outer cylinder body is composed of the upper cover 10 and the spindle outer cylinder 20, and the internal parts are pressed into it by screw connection. It is simple and convenient to install, and the connection is more stable and reliable.

[0050] Specifically, the placement groove 14 on the upper cover 10 includes a first shelf groove 141 and a second shelf groove 142 . The first shelf groove 141 is used for installing the upper end of the diffuser 30 , and the second shelf groove 142 is used for installing the upper end of the outer sleeve 40 .

[0051] Among them, regarding the diffuser pipe 30:

[0052] Specifically, the diffuser 30 is an existing structure, which has the same structure and function as that of the Swiss Rieter vortex spinning machine, and will not be described in detail here.

[0053] Among the optional solutions of this embodiment, it is more preferred that Figure 5 and Figure 6 As shown, a sealing ring 90 is provided at the connection between the upper end of the diffuser 30 and the outlet hole 11 and at the connection between the lower end of the diffuser 30 and the upper end of the central tube 61 of the hollow spindle head 60. The provision of the sealing ring 90 enables all the gas entering from the air inlet channel 13 to flow out from each first swirling air channel 64 of the conical head 62, ensuring that the airflow layer formed on the outer wall of the conical head 62 is more stable and reliable.

[0054] Specifically, the lower end of the outer sleeve 40 has a receiving end surface for receiving the lower end of the diffuser 30 , and the lower end surface of the outer sleeve 40 is placed on the receiving plate 50 .

[0055] Specifically, the axes of the diffuser 30 , the outer sleeve 40 , the receiving plate 50 and the central tube 61 are coaxial.

[0056] Specifically, the lower ends of the receiving plate 50 and the outer sleeve 40 are provided with through holes, and the lower end of the diffuser 30 is provided with a storage groove connected to the first central channel 611. The storage groove is connected to the first central channel 611 through the through hole. The inner diameter of the through hole is smaller than the inner diameter of the storage groove. The through hole is the same as the inner diameter of the storage groove. The inner diameter of the outer sleeve 40 is larger than the inner diameter of the through hole. The upper end of the center tube 61 is placed in the storage groove of the diffuser 30 through the through holes of the receiving plate 50 and the outer sleeve 40 in turn. The outer diameter of the center tube 61 is larger than the inner diameter of the through hole, and the inner diameter of the center tube 61 is not larger than the inner diameter of the through hole.

[0057] Among them, regarding the structure of the receiving plate 50:

[0058] Among the optional solutions of this embodiment, it is more preferred that Figure 4 As shown, the communicating holes 51 are semicircular holes, and each communicating hole 51 is evenly arranged on the circumferential edge of the receiving plate 50. By arranging a plurality of semicircular holes on the circumferential edge of the receiving plate 50, the gas entering the gas containing cavity 63 is more uniform, so that the gas flowing out of each first swirling air channel 64 is also more uniform.

[0059] Among them, each component is installed on the spinning box seat 80, as follows:

[0060] Among the optional solutions of this embodiment, it is more preferred that Figure 3 to Figure 5 As shown, the spinning box seat 80 also includes a spinning box seat 80, which has a hollow cavity that penetrates through it, and the outer cylinder, the hollow spindle head 60 and the air jet head 70 are all arranged in the hollow cavity; the air jet head 70 has a third central channel, and a plurality of second directional air passages 71 are arranged on the side wall of the air jet head 70. The spinning box seat 80 is provided with an air inlet cavity 81 corresponding to the position of each second directional air passage 71 of the air jet head 70, and the inner diameter of the air inlet cavity 81 is greater than the outer diameter of the air jet head 70; the spinning box seat 80 is provided with a main air inlet 82 connected with the air inlet cavity 81; the gas is blown toward the conical head 62 through each second directional air passage 71 and forms a rotating airflow for twisting on the outer wall of the conical head 62. The arrangement of the spinning box seat 80 can make the relative positions between the various components more stable, and ensure that the interior thereof is not affected by other equipment, and ensure the continuous and stable operation of the internal twisting process.

[0061] Among the optional solutions of this embodiment, it is more preferred that Figure 3 As shown, a negative pressure dust removal channel 83 is provided on the spinning box seat 80 at a position corresponding to the conical head 62. The arrangement of the negative pressure dust removal channel 83 enables the fibers that have been separated from the twist to be discharged in time, thereby preventing them from affecting the stable generation of the yarn.

[0062] Specifically, the negative pressure dust removal channel 83 is used to connect to the exhaust equipment so that the fibers that have been separated from the twist can be extracted in time.

[0063] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A hollow spindle head, characterized in that: It includes a center tube and a conical head which are coaxially arranged; The conical head has an inner cavity and an upper opening communicating with the inner cavity; The central tube is located in the inner cavity; one end of the central tube is fixedly connected to one end of the conical head, and the other end of the central tube extends out of the upper opening; the central tube has a first central channel running through it, and the lower end opening of the first central channel is used for the entry of the straight fiber bundle; The space between the inner wall of the inner cavity and the outer wall of the central tube forms a gas containing cavity; the gas containing cavity is used for injecting gas; A plurality of first rotational air passages are arranged on the outer side wall of one end of the conical head away from the upper opening; the gas in the gas containing cavity flows out through each of the first rotational air passages, and the rotational direction of the gas after flowing out is the same as the rotational direction of the rotating airflow used for twisting on the outer side wall of the conical head.

2. A spinning box, characterized in that: It comprises an outer cylinder, a diffuser, an outer sleeve, a receiving plate, a nozzle and the hollow spindle head as claimed in claim 1; in the axial direction of the outer cylinder, the diffuser, the receiving plate, the hollow spindle head and the nozzle are arranged in sequence from top to bottom; The outer cylinder has a containing cavity inside, and the upper end of the outer cylinder is provided with a wire outlet hole, an exhaust channel and an air inlet channel; The diffuser is located in the accommodating cavity, the diffuser has a second central channel, and a plurality of through holes are opened on the side wall of the diffuser, each of the through holes is connected to the second central channel, and the upper end of the second central channel is connected to and communicated with the outlet hole; The outer sleeve is sleeved on the outside of the diffuser, and the outer sleeve can isolate the communication between the diffuser and the accommodating cavity; the inside of the outer sleeve is communicated with the exhaust passage; the cavity between the outside of the outer sleeve and the inside of the outer cylinder is communicated with the air inlet passage; The receiving plate is fixedly arranged in the inner cavity of the hollow ingot head, and the lower end of the outer sleeve is placed on the receiving plate; the outer diameter of the receiving plate is larger than the outer diameter of the outer sleeve; a plurality of connecting holes are arranged on the receiving plate, and the cavity between the outer sleeve and the inner part of the outer cylinder can be connected with the gas containing cavity through each of the connecting holes; The upper end of the conical head of the hollow ingot head is fixedly connected to the outer cylinder; the upper end of the central tube of the hollow ingot head is connected and communicated with the lower end of the second central channel of the diffuser; The nozzle is located below the conical head of the hollow spindle head, and the nozzle is used to provide a rotating airflow blowing toward the outer side wall of the conical head; An entry channel for the straight fiber bundle to pass through is arranged below the jet head, and the straight fiber bundle can enter the lower end opening of the central tube of the hollow spindle through the entry channel.

3. The spinning box according to claim 2, characterized in that: The outer cylinder body comprises an upper cover and a spindle outer cylinder; The upper cover is provided with the wire outlet hole, the exhaust channel and the air inlet channel; The spindle outer cylinder has a storage cavity inside, and the upper end of the spindle outer cylinder has a connection port communicating with the storage cavity, and the lower end of the spindle outer cylinder has a through port communicating with the storage cavity; An outer convex ring is fixedly provided on the outer side wall of the upper end of the conical head of the hollow ingot head, the outer diameter of the outer convex ring is larger than the inner diameter of the through-hole, and the outer diameter of the upper end of the conical head is the same as the inner diameter of the through-hole; The connecting port of the spindle outer cylinder has an internal thread, and the outer side wall of the lower end of the upper cover has an external thread, and the internal thread is threadedly connected with the external thread; The lower end of the upper cover is provided with a placement groove which is in communication with the wire outlet hole, and the upper ends of the diffuser pipe and the outer sleeve are both located in the placement groove.

4. The spinning box according to claim 3, characterized in that: Sealing rings are provided at the connection between the upper end of the diffuser pipe and the wire outlet hole, and at the connection between the lower end of the diffuser pipe and the upper end of the central pipe of the hollow spindle head.

5. The spinning box according to claim 2, characterized in that: It also includes a spinning box seat, the spinning box seat has a through hollow cavity, the outer cylinder, the hollow spindle head and the air jet head are all arranged in the hollow cavity; The jet head has a third central channel, a plurality of second directional air passages are arranged on the side wall of the jet head, an air inlet cavity is arranged on the spinning box seat corresponding to the position of each of the second directional air passages of the jet head, and the inner diameter of the air inlet cavity is greater than the outer diameter of the jet head; a main air inlet connected to the air inlet cavity is arranged on the spinning box seat; The gas is blown toward the conical head through each of the second swirling air passages and forms a swirling airflow for twisting on the outer side wall of the conical head.

6. The spinning box according to claim 5, characterized in that: A negative pressure dust removal channel is provided on the spinning box seat at a position corresponding to the conical head.

7. The spinning box according to claim 2, characterized in that: The communicating holes are semicircular holes, and each of the communicating holes is evenly arranged on the circumferential edge of the receiving plate.

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