Polyimide fiber preparation equipment for astronaut textiles

Abstract

The invention relates to the technical field of fiber processing, in particular to astronaut textile polyimide fiber preparation equipment, which is characterized in that a designed deburring mechanism is used for cutting burrs on the sides of polyimide fiber fabric, so that the subsequent treatment procedure is avoided; wherein the polyimide fiber fabric is conveyed through the bearing plate body, auxiliary conveying work is carried out through the loom conveying auxiliary roller, in the process, the loom conveying auxiliary roller flattens the polyimide fiber fabric, an arranged auxiliary rolling wheel also extrudes and makes contact with the polyimide fiber fabric, and the polyimide fiber fabric is conveyed through the loom conveying auxiliary roller. In the conveying process of the polyimide fiber fabric, the polyimide fiber fabric can drive an auxiliary roller to roll, and then a cutter body arranged on a bearing shaft body is driven to rotate, so that the cutter body cuts off burrs on the sides of the polyimide fiber fabric, subsequent cutting treatment is avoided, the treatment procedures are saved, and the production efficiency is improved. The method has a positive effect on improvement of textile processing benefits.

Description

Technical Field

[0001] The present invention relates to the technical field of fiber processing, and more particularly to a polyimide fiber preparation device for astronaut textiles. Background Art

[0002] Polyimide fiber is a high-performance fiber material with excellent high-temperature resistance, mechanical strength, and radiation resistance, and can maintain the stability of performance in extreme environments. Therefore, it is usually an ideal material for astronaut textiles, which can provide effective protection and good comfort in the harsh outer space environment and ensure the smooth completion of space missions.

[0003] In the preparation process of polyimide fiber fabrics, a loom is generally used. Among them, the air-jet loom has high production efficiency. However, during the production process using an air-jet loom, there will be frayed edges on the sides of the prepared polyimide fiber fabric finished products, and the finished products need to be reprocessed to remove the frayed edges, that is, corresponding edge-trimming processes need to be added; after the existing air-jet loom weaves the fiber finished fabric, it is conveyed by a conveying roller device, and during the conveying process, it lacks a corresponding edge-trimming mechanism to improve the processing quality of its finished products.

[0004] Therefore, the present invention proposes a polyimide fiber preparation device for astronaut textiles to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide a polyimide fiber preparation device for astronaut textiles to solve the problems raised in the above background art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A polyimide fiber preparation device for astronaut textiles, including a bearing plate body, a loom conveying auxiliary roller, and an edge-trimming mechanism; both ends of the bearing plate body are symmetrically and fixedly provided with connecting feet, and a support body is fixedly provided at the top position of the end face of the bearing plate body. The support body is connected to the loom conveying auxiliary roller. There are two groups of loom conveying auxiliary rollers. An auxiliary groove is provided on the bearing plate body, and edge-trimming mechanisms are symmetrically provided at both ends of the bearing plate body. The edge-trimming mechanism cuts off the frayed edges on the side of the polyimide fiber fabric.

[0007] Preferably, the edge-trimming mechanism includes a support control component and a cutting component. Among them, the edge-trimming mechanism includes a support frame body, a movable cavity, a cover plate, a fixing bolt, a control screw rod, an auxiliary handle, a first auxiliary bearing, a support carrier, and a docking structure; the support frame body is welded and fixedly provided at the end of the bearing plate body. A movable cavity is provided in the support frame body. The top of the support frame body is open and is blocked by the provided cover plate. The cover plate is fixed by a fixing bolt.

[0008] Preferably, a regulating lead screw is threadedly connected through the cover plate. An auxiliary handle is fixedly arranged at the top end of the regulating lead screw. The bottom end of the regulating lead screw is inserted into the inner ring of a first auxiliary bearing. The first auxiliary bearing is fixedly arranged in an embedded manner at the top of a support carrier. The support carrier is arranged in a movable cavity, and both ends of the support carrier are in fitting contact with the side walls of the movable cavity.

[0009] Preferably, a docking structure is arranged on one side of the support carrier. The docking structure includes a second auxiliary bearing, a support rotating shaft, a docking plug and a connection card slot. The second auxiliary bearing is fixedly arranged in an embedded manner on one side of the support carrier, and the second auxiliary bearing is sleeved on one end of the support rotating shaft. The other end of the support rotating shaft is fixedly provided with a docking plug. A connection card slot is arranged on the side wall of the docking plug, and the end face shape of the docking plug is square.

[0010] Preferably, the cutting component includes a bearing shaft body, a limiting sliding groove, a positioning card slot, a docking plug rod, a connecting screw groove, a cutting tool fitting and a connecting auxiliary piece. Docking plug rods are symmetrically and fixedly arranged at both ends of the bearing shaft body. A connecting screw groove is arranged at the center position of the end face of one end of the docking plug rod. A limiting sliding groove is arranged on the side wall of the bearing shaft body, and the lengths of the limiting sliding groove and the bearing shaft body are equal. Positioning card slots are arranged at equal intervals in a straight line in the limiting sliding groove, and a cutting tool fitting is arranged on the bearing shaft body.

[0011] Preferably, the cutting tool fitting includes a limiting sleeve, a bearing collar, a limiting sliding block, a threaded through hole, a positioning screw and a cutting tool body. A bearing collar is fixedly arranged at one end of the limiting sleeve. A limiting sliding block is fixedly arranged on the inner side wall of the limiting sleeve, and one end of the limiting sliding block extends into the bearing collar. The limiting sliding block is slidably connected in a matching manner with the limiting sliding groove. Cutting tool bodies are fixedly arranged at equal intervals on the outer side wall of the bearing collar, and the cutting tool bodies are arranged as double-edged knives.

[0012] Preferably, a threaded through hole is arranged in the limiting sleeve. The threaded through hole is threadedly connected with the positioning screw in a matching manner, and one end of the positioning screw is clamped with the positioning card slot in a matching manner.

[0013] Preferably, the connecting auxiliary piece includes an auxiliary roller, a docking insertion cavity, a through hole body, a docking sleeve, a connecting screw, a fastening threaded hole and a fastening screw. A docking insertion cavity is arranged at the center position of the end face of one end of the auxiliary roller, and a through hole body is arranged at the center position of the end face of the other end. The through hole body and the docking insertion cavity are communicated with each other.

[0014] Preferably, the docking insertion cavity is inserted into the docking plug rod in a matching manner. The position of the through hole body corresponds to the position of the connecting screw groove on the end face of the docking plug rod. Two groups of auxiliary rollers are arranged, and the auxiliary rollers are symmetrically arranged at both ends of the bearing shaft body. The connecting screw passes through the through hole body and is threadedly connected with the connecting screw groove in a matching manner.

[0015] Preferably, the docking sleeve is fixedly arranged at the central position of one end of the auxiliary roller, and the docking sleeve is on the same side as the through hole body. The mouth shape of the docking sleeve is square, and the docking sleeve is adaptively plugged with the docking plug. A fastening threaded hole is arranged on the side of the docking sleeve, and the fastening threaded hole is in threaded connection with a fastening screw in an adaptive manner, and one end of the fastening screw is in adaptive clamping connection with the connection card slot on the docking plug.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: The polyimide fiber preparation equipment designed in this scheme includes a bearing plate body, a loom conveying auxiliary roller and a deburring mechanism; connection feet are symmetrically and fixedly arranged at both ends of the bearing plate body, and a support body is fixedly arranged at the top position of the end face of the bearing plate body. The support body is connected with the loom conveying auxiliary roller. Two groups of loom conveying auxiliary rollers are arranged. An auxiliary groove is arranged on the bearing plate body, and deburring mechanisms are symmetrically arranged at both ends of the bearing plate body. The deburring mechanism cuts off the burrs on the side of the polyimide fiber fabric, avoiding the need for additional subsequent processing steps; the polyimide fiber fabric is conveyed through the bearing plate body and is assisted in conveying by the loom conveying auxiliary roller. During this process, the loom conveying auxiliary roller flattens the polyimide fiber fabric, and the arranged auxiliary roller also makes extrusion contact with the polyimide fiber fabric. During the conveying process of the polyimide fiber fabric, the polyimide fiber fabric drives the auxiliary roller to roll, thereby driving the cutter body arranged on the bearing shaft body to rotate, so that the cutter body cuts off the burrs on the side of the polyimide fiber fabric, avoiding subsequent cutting treatment, saving its processing steps, and having a positive effect on improving its textile processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic right-side view of the structural connection of the polyimide fiber preparation equipment of the present invention; Figure 2 is Figure 1 an enlarged schematic view of the structural connection at A in Figure 3 It is a schematic left-side view of the structural connection of the polyimide fiber preparation equipment of the present invention; Figure 4 is Figure 3 an enlarged schematic view of the structural connection at B in Figure 5 It is a schematic front-side view of the structural connection of the support regulation component of the present invention; Figure 6 It is a schematic back-side view of the structural connection of the support regulation component of the present invention; Figure 7 is Figure 6 an enlarged schematic view of the structural connection at C in Figure 8 Schematic diagram of the left side of the explosion of the connection between the cutting component and the connection auxiliary of the present invention; Figure 9 For Figure 8 Enlarged schematic diagram of the structural connection at position D in Figure 10 Partial schematic diagram of the structural connection of the auxiliary roller of the present invention; Figure 11 For Figure 10 Enlarged schematic diagram of the structural connection at position E in Figure 12 Schematic diagram of the right side of the explosion of the connection between the cutting component and the connection auxiliary of the present invention; Figure 13 For Figure 12 Enlarged schematic diagram of the structural connection at position F in

[0018] In the figure: load-bearing plate body 1, connecting feet 2, support body 3, loom conveying auxiliary roller 4, polyimide fiber fabric 5, auxiliary groove 6, support frame body 701, movable cavity 702, cover plate 703, fixing bolt 704, regulating lead screw 705, auxiliary handle 706, first auxiliary bearing 707, support carrier 708, second auxiliary bearing 801, support rotating shaft 802, docking plug 803, connection card slot 804, load-bearing shaft body 901, limit sliding groove 902, positioning card slot 903, docking plug rod 904, connection screw groove 905, limit sleeve 1001, load-bearing collar 1002, limit slider 1003, threaded through hole 1004, positioning screw 1005, cutter body 1006, auxiliary roller 1101, docking plug cavity 1102, through hole body 1103, docking sleeve 1104, connection screw 1105, fastening threaded hole 1106, fastening screw 1107. Specific embodiments

[0019] The technical solutions in the embodiments of the present invention will be clearly and completely described below. For the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment 1: Please refer to Figures 1 - 13 , a polyimide fiber preparation device for astronaut textiles, including a load-bearing plate body 1, a loom conveying auxiliary roller 4 and a deburring mechanism; connecting feet 2 are symmetrically and fixedly arranged at both ends of the load-bearing plate body 1, and a support body 3 is fixedly arranged at the top position of the end face of the load-bearing plate body 1. The support body 3 is connected to the loom conveying auxiliary roller 4. There are two groups of loom conveying auxiliary rollers 4. An auxiliary groove 6 is arranged on the load-bearing plate body 1, and deburring mechanisms are symmetrically arranged at both ends of the load-bearing plate body 1. The deburring mechanisms cut the burrs on the side of the polyimide fiber fabric 5.

[0021] Among them, the polyimide fiber fabric 5 is conveyed through the bearing plate body 1, and the auxiliary conveying work is carried out through the loom conveying auxiliary roller 4. During this process, the loom conveying auxiliary roller 4 flattens the polyimide fiber fabric 5, and the arranged auxiliary roller 1101 also makes extrusion contact with the polyimide fiber fabric 5. Moreover, during the conveying process of the polyimide fiber fabric 5, the polyimide fiber fabric 5 drives the auxiliary roller 1101 to roll, thereby driving the cutting tool body 1006 arranged on the bearing shaft body 901 to rotate, so that the cutting tool body 1006 cuts off the frayed edges on the side of the polyimide fiber fabric 5, avoiding subsequent cutting treatment, saving its treatment process, and having a positive effect on improving its textile processing efficiency.

[0022] The deburring mechanism includes a support regulation component and a cutting component. Among them, the support frame body 701 in the deburring mechanism is welded and fixed at the end of the bearing plate body 1. An activity cavity 702 is arranged in the support frame body 701. The top of the support frame body 701 is open and is blocked by the arranged cover plate 703. The cover plate 703 is fixed by fixing bolts 704; a regulation screw rod 705 is threadedly connected through the cover plate 703. An auxiliary handle 706 is fixed at the top of the regulation screw rod 705. The bottom end of the regulation screw rod 705 is inserted into the inner ring of the first auxiliary bearing 707. The first auxiliary bearing 707 is embedded and fixed at the top of the support carrier 708. The support carrier 708 is arranged in the activity cavity 702, and both ends of the support carrier 708 are in close contact with the side walls of the activity cavity 702; and a docking structure is arranged on one side of the support carrier 708. The second auxiliary bearing 801 in the docking structure is embedded on one side of the support carrier 708, and the second auxiliary bearing 801 is sleeved at one end of the support rotating shaft 802. The other end of the support rotating shaft 802 is fixed with a docking plug 803. A connecting card slot 804 is arranged on the side wall of the docking plug 803, and the end face shape of the docking plug 803 is square.

[0023] In order to enable the auxiliary roller 1101 to have better extrusion contact with the polyimide fiber fabric 5 and facilitate the later replacement and maintenance work, in this solution, a support control component is set to control the position of the auxiliary roller 1101. The docking structure is connected to the auxiliary roller 1101. The height position of the support carrier 708 in the movable cavity 702 is controlled by the control screw rod 705. A docking structure is arranged on one side of the support carrier 708. The support rotating shaft 802 in the docking structure is inserted into the docking sleeve 1104 at one end of the auxiliary roller 1101 and is connected and fixed by a fastening screw 1107. That is, by controlling the support carrier 708 through the control screw rod 705, the position of the auxiliary roller 1101 can be controlled. When it is necessary to make extrusion contact with the polyimide fiber fabric 5, the purpose of the extrusion contact in this process is that when the polyimide fiber fabric 5 is conveyed, it can drive the auxiliary roller 1101 to roll. The control screw rod 705 is rotated by the auxiliary handle 706, and the control screw rod 705 presses down the support carrier 708, so that the auxiliary roller 1101 moves downward until the auxiliary roller 1101 makes contact extrusion with the polyimide fiber fabric 5. When it is necessary to replace or disassemble and maintain the auxiliary roller 1101 in the later stage, the control screw rod 705 needs to be rotated in the reverse direction at this time to drive the support carrier 708 to move upward, so that the position of the auxiliary roller 1101 moves upward, which is convenient for the staff to carry out disassembly operations.

[0024] A docking insertion cavity 1102 is arranged at the center position of the end face of one end of the auxiliary roller 1101 in the connecting auxiliary part, and a through hole body 1103 is arranged at the center position of the end face of the other end. The through hole body 1103 and the docking insertion cavity 1102 are communicated with each other; the docking insertion cavity 1102 is adaptively inserted with the docking insertion rod 904, and the position of the connection screw groove 905 on the end face of the docking insertion rod 904 corresponds to the position of the through hole body 1103; two groups of auxiliary rollers 1101 are arranged, and the auxiliary rollers 1101 are symmetrically arranged at both ends of the bearing shaft body 901. The connecting screw 1105 passes through the through hole body 1103 and is threadedly connected with the connection screw groove 905 in an adaptive manner; the docking sleeve 1104 is fixedly arranged at the center position of one end of the auxiliary roller 1101, and the docking sleeve 1104 is on the same side as the through hole body 1103. The shape of the mouth of the docking sleeve 1104 is square, and the docking sleeve 1104 is adaptively inserted with the docking block 803. A fastening threaded hole 1106 is arranged on the side of the docking sleeve 1104, and the fastening threaded hole 1106 is threadedly connected with the fastening screw 1107 in an adaptive manner. One end of the fastening screw 1107 is adaptively clamped with the connection card slot 804 on the docking block 803; the connecting auxiliary part is used to connect and fix the auxiliary roller 1101 and the support rotating shaft 802, and is also used to connect the auxiliary roller 1101 and the bearing shaft body 901.

[0025] In this solution, two sets of auxiliary rollers 1101 are provided. One of the auxiliary rollers 1101 on the inner side is used to extrude and position the frayed edges on the side of the polyimide fiber fabric 5. This inner auxiliary roller 1101 is also directly connected to the support rotating shaft 802. The other auxiliary roller 1101 on the outer side is used to contact and extrude the polyimide fiber fabric 5. The purpose is to keep the frayed edges in a taut state when cutting the frayed edges to ensure smooth cutting. The cutter body 1006 cuts the frayed edges. The purpose of the auxiliary groove 6 provided on the bearing plate body 1 is to prevent the cutter body 1006 from being damaged by collision when cutting the frayed edges; one end of the docking sleeve 1104 of the inner auxiliary roller 1101 is inserted into the docking plug 803 at the end of the support rotating shaft 802, and the fastening threaded hole 1106 on the docking sleeve 1104 is aligned with the connection card slot 804 on the docking plug 803, and then a fastening screw 1107 is used for connection and fixation.

[0026] In this solution, for the installation of the cutter accessories and the auxiliary rollers 1101, first, the cutter accessories need to be installed on the bearing shaft body 901, that is, the limit sleeve 1001 is sleeved on the bearing shaft body 901, and the limit slider 1003 inside the limit sleeve 1001 is slid into the limit chute 902 on the bearing shaft body 901. After reaching the appropriate position, it can be fixed by the positioning screw 1005. Then, the auxiliary rollers 1101 are installed at both ends of the bearing shaft body 901, that is, the docking plug rod 904 at the end of the bearing shaft body 901 is inserted into the docking cavity 1102 at one end of the auxiliary roller 1101. At this time, the connection screw groove 905 at the end of the docking plug rod 904 is aligned with the through hole body 1103. Then, the connection screw 1105 is passed through the through hole body 1103 and then threadedly connected to the connection screw groove 905 to complete the fixed connection between the auxiliary roller 1101 and the bearing shaft body 901. At this time, the connected auxiliary roller 1101 is connected to the docking structure on one side of the support carrier 708. That is, docking sleeves 1104 are fixedly provided at the ends of the two connected auxiliary rollers 1101. That is, any one of the auxiliary rollers 1101 can be connected and fixed to the support rotating shaft 802 in the docking structure. The auxiliary roller 1101 directly connected to the support rotating shaft 802 is used as the inner auxiliary roller 1101 to press and position the frayed edges.

[0027] In order to improve the flexibility of use of the cutter body 1006, this solution is provided with positioning card slots 903 at equal intervals in the limit sliding groove 902. That is, through the combined use of the positioning screw 1005 and the positioning card slot 903, the position of the cutter body 1006 can be adjusted along the axial direction of the bearing shaft body 901, and the adjustment work is convenient, with better flexibility in use; at both ends of the bearing shaft body 901 in the cutting component of this solution, docking insertion rods 904 are symmetrically and fixedly arranged. At the center position of the end face of one end of the docking insertion rod 904, a connecting screw groove 905 is provided. The side wall of the bearing shaft body 901 is provided with a limit sliding groove 902, and the lengths of the limit sliding groove 902 and the bearing shaft body 901 are equal. The positioning card slots 903 are arranged in a straight line at equal intervals in the limit sliding groove 902, and a cutter fitting is provided on the bearing shaft body 901; at one end of the limit sleeve 1001 in the cutter fitting, a bearing collar 1002 is fixedly arranged. The inner side wall of the limit sleeve 1001 is fixedly provided with a limit slider 1003, and one end of the limit slider 1003 extends into the bearing collar 1002. The limit slider 1003 is slidably connected in a matching manner with the limit sliding groove 902. The outer side wall of the bearing collar 1002 is fixedly provided with cutter bodies 1006 at equal intervals, and the cutter body 1006 is set as a double-edged knife; a threaded through hole 1004 is provided in the limit sleeve 1001. The threaded through hole 1004 is threadedly connected in a matching manner with the positioning screw 1005, and one end of the positioning screw 1005 is clamped in a matching manner with the positioning card slot 903.

[0028] In order to improve the quality of its cutting work, the cutter body 1006 of this solution is set as a double-edged knife. Since the cutter body 1006 rotates as the auxiliary roller 1101 rolls, multiple sets of cutter bodies 1006 can take turns to perform the cutting work on the burrs, avoiding a single cutting edge surface from continuously performing the cutting work, delaying the dulling time of the cutting edge, improving its service life and ensuring the cutting quality; furthermore, for the double-sided setting, when one of the cutting edges becomes dull, it is not necessary to replace the new cutter body 1006. That is, the inner and outer auxiliary rollers 1101 are adjusted in position. That is, the inner auxiliary roller 1101 is connected and contacted with the support rotating shaft 802 in the docking structure, and then the outer auxiliary roller 1101 is connected and fixed to the support rotating shaft 802. At this time, the unused cutting edge surface of the other side of the cutter body 1006 performs the cutting work, which can avoid directly replacing the new cutter body 1006, save expenses, and improve production efficiency.

[0029] In this solution, in order to prevent the same cutter body 1006 from being in a cutting working state all the time, multiple groups of cutter bodies 1006 are arranged on the bearing collar 1002 for cutting work, and the cutter body 1006 rotates as the auxiliary roller 1101 rolls. That is, when rotating cutting is performed at this time, there will be a gap between the cutter bodies 1006. That is, when the inner auxiliary roller 1101 presses and positions the burr, the cutter body 1006 may not reach the burr position yet, which will cause a cutting gap. Multiple burr-removing mechanisms can be arranged at both ends of the bearing plate body 1 to solve this problem. That is, multiple support frames 701 are welded at equal intervals on the end face of the bearing plate body 1, and the support frames 701 are connected to the cutting assembly. The multiple cutting assemblies arranged perform cutting work on the burrs of the same polyimide fiber fabric 5.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A preparation device for polyimide fibers of astronaut textiles, characterized in that: It includes a bearing plate body (1), a loom conveying auxiliary roller (4) and a deburring mechanism; both ends of the bearing plate body (1) are symmetrically and fixedly provided with connecting feet (2), and a support body (3) is fixedly provided at the top position of the end face of the bearing plate body (1). The support body (3) is connected to the loom conveying auxiliary roller (4). There are two groups of loom conveying auxiliary rollers (4). An auxiliary groove (6) is provided on the bearing plate body (1), and deburring mechanisms are symmetrically arranged at both ends of the bearing plate body (1). The deburring mechanisms cut off the frayed edges on the side of the polyimide fiber fabric (5).

2. The polyimide fiber preparation device for astronaut textiles according to claim 1, wherein: The deburring mechanism includes a support control component and a cutting component. The deburring mechanism includes a support frame body (701), a movable cavity (702), a cover plate (703), a fixing bolt (704), a control screw rod (705), an auxiliary handle (706), a first auxiliary bearing (707), a support carrier (708) and a docking structure; the support frame body (701) is welded and fixedly arranged at the end of the bearing plate body (1). A movable cavity (702) is arranged in the support frame body (701). The top of the support frame body (701) is open and is blocked by the provided cover plate (703). The cover plate (703) is fixed by the fixing bolt (704).

3. The preparation device for polyimide fibers of astronaut textiles according to claim 2, characterized in that: The cover plate (703) is threadedly connected with a control screw rod (705) passing through it. An auxiliary handle (706) is fixedly arranged at the top of the control screw rod (705). The bottom end of the control screw rod (705) is inserted into the inner ring of the first auxiliary bearing (707). The first auxiliary bearing (707) is embedded and fixedly arranged at the top of the support carrier (708). The support carrier (708) is arranged in the movable cavity (702), and both ends of the support carrier (708) are in close contact with the side walls of the movable cavity (702).

4. The preparation device for polyimide fibers of astronaut textiles according to claim 2, characterized in that: A docking structure is arranged on one side of the support carrier (708). The docking structure includes a second auxiliary bearing (801), a support rotating shaft (802), a docking plug (803) and a connection card slot (804); the second auxiliary bearing (801) is embedded and arranged on one side of the support carrier (708), and the second auxiliary bearing (801) is sleeved on one end of the support rotating shaft (802). The other end of the support rotating shaft (802) is fixedly provided with a docking plug (803). A connection card slot (804) is arranged on the side wall of the docking plug (803), and the end face shape of the docking plug (803) is square.

5. The preparation device of polyimide fiber for astronaut textiles according to claim 2, characterized in that: The cutting component includes a bearing shaft body (901), a limiting sliding groove (902), a positioning clamping groove (903), a docking plug (904), a connecting screw groove (905), a cutter fitting and a connecting auxiliary part; at both ends of the bearing shaft body (901), docking plugs (904) are symmetrically and fixedly arranged, at the center position of the end face of one end of the docking plug (904), a connecting screw groove (905) is arranged, on the side wall of the bearing shaft body (901), a limiting sliding groove (902) is arranged, and the lengths of the limiting sliding groove (902) and the bearing shaft body (901) are equal. In the limiting sliding groove (902), positioning clamping grooves (903) are arranged equidistantly in a straight line, and a cutter fitting is arranged on the bearing shaft body (901).

6. The preparation equipment for polyimide fibers of astronaut textiles according to claim 5, characterized in that: The cutter fitting includes a limiting sleeve (1001), a bearing collar (1002), a limiting slider (1003), a threaded through hole (1004), a positioning screw (1005) and a cutter body (1006); at one end of the limiting sleeve (1001), a bearing collar (1002) is fixedly arranged, on the inner side wall of the limiting sleeve (1001), a limiting slider (1003) is fixedly arranged, and one end of the limiting slider (1003) extends into the bearing collar (1002). The limiting slider (1003) is slidably connected in a matching manner with the limiting sliding groove (902). On the outer side wall of the bearing collar (1002), cutter bodies (1006) are fixedly arranged equidistantly, and the cutter body (1006) is arranged as a double-edge knife.

7. The preparation device for polyimide fibers of astronaut textiles according to claim 6, characterized in that: In the limiting sleeve (1001), a threaded through hole (1004) is arranged, the threaded through hole (1004) is threadedly connected with the positioning screw (1005) in a matching manner, and one end of the positioning screw (1005) is clamped with the positioning clamping groove (903) in a matching manner.

8. The preparation device for polyimide fibers of astronaut textiles according to claim 5, characterized in that: The connecting auxiliary part includes an auxiliary roller (1101), a docking insertion cavity (1102), a through hole body (1103), a docking sleeve (1104), a connecting screw (1105), a fastening threaded hole (1106) and a fastening screw (1107); at the center position of the end face of one end of the auxiliary roller (1101), a docking insertion cavity (1102) is arranged, at the center position of the end face of the other end, a through hole body (1103) is arranged, and the through hole body (1103) and the docking insertion cavity (1102) are communicated with each other.

9. The preparation device of polyimide fiber for astronaut textiles according to claim 8, characterized in that: The docking insertion cavity (1102) is inserted into the docking plug (904) in a matching manner, and the position of the through hole body (1103) corresponds to the position of the connecting screw groove (905) on the end face of the docking plug (904); two groups of auxiliary rollers (1101) are arranged, and the auxiliary rollers (1101) are symmetrically arranged at both ends of the bearing shaft body (901). The connecting screw (1105) passes through the through hole body (1103) and is threadedly connected with the connecting screw groove (905) in a matching manner.

10. The preparation device of polyimide fiber for astronaut textiles according to claim 8, characterized in that: The docking sleeve (1104) is fixedly arranged at the central position of one end of the auxiliary roller (1101), and the docking sleeve (1104) is on the same side as the through-hole body (1103). The shape of the mouth of the docking sleeve (1104) is square, and the docking sleeve (1104) is adaptively inserted and connected with the docking plug (803). A fastening threaded hole (1106) is arranged on the side of the docking sleeve (1104). The fastening threaded hole (1106) is in threaded connection with a fastening screw (1107) in an adaptive manner, and one end of the fastening screw (1107) is in adaptive clamping connection with a connection clamping groove (804) on the docking plug (803).

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