Production system and production process of strong regenerated cotton yarn

Abstract

The invention relates to a production system and a production process of strong regenerated cotton yarn, and relates to the technical field of regenerated cotton processing.The production system comprises a base table and a cotton opening mechanism, and the cotton opening mechanism comprises a supporting arm, a first driving part driving the supporting arm to slide in a reciprocating mode, a transverse plate arranged on the side face of the supporting arm in a sliding mode and a second driving part driving the transverse plate to slide up and down; a cutting piece is arranged on the side face, facing the base table, of the transverse plate. Supporting plates are fixedly arranged on the transverse plates, first push rods and second push rods are arranged on the side faces, away from the transverse plates, of the supporting plates, one ends of the first push rods are hinged to the transverse plates, first electric cylinders are fixedly arranged on the supporting plates, and the two ends of the second push rods are hinged to the ends of telescopic rods of the first electric cylinders and the other ends of the second push rods correspondingly. Scrapers are fixedly arranged on the first push rod and the second push rod; according to the cotton bale opening device, the scraping plate can slide in a reciprocating mode along with the transverse plate, then the opened part of the upper portion of a cotton bale is treated and scraped to the ground, and follow-up collection through other equipment is facilitated.

Description

Technical Field

[0001] The present application relates to the technical field of recycled cotton processing, and in particular to a production system and production process of strong recycled cotton yarn. Background Art

[0002] As an environmentally friendly material, the production process of recycled cotton involves the recycling and reuse of discarded cotton, industrial waste and scraps from textile enterprises. Among them, the processing of recycled cotton bales is a key link in this circular economy. Cotton bales, as a collection of recycled cotton fibers, go through a series of fine processes - loosening, opening, blending, cleaning, combing, drawing, roving and spinning, and finally are transformed into recycled cotton yarn, realizing the effective transformation and upgrading of resources.

[0003] In the core step of opening the cotton, the traditional process relies on equipment such as opening machines to loosen the recycled cotton bales layer by layer from top to bottom through physical means such as tearing and cutting, aiming to break down tightly entangled large pieces of fibers into small pieces or bundles of fibers that are easier to process later.

[0004] However, the limitation of the existing technology is that although the fibers on the surface of the cotton bale can be effectively torn apart, the torn small pieces of cotton fibers are often still stuck to the upper side of the cotton bale, which not only hinders the subsequent full loosening of the fibers, but also forces the production process to be interrupted, requiring manual intervention to manually remove these residual fibers before the cotton opening operation can continue. This situation not only significantly reduces the efficiency of the cotton opening process and increases labor costs, but also in large-scale production scenarios, frequent interruptions and restarts seriously restrict the overall production capacity, and cannot meet the market's growing demand for recycled cotton products. There is room for improvement. Summary of the invention

[0005] The purpose of this application is to provide a production system and production process for strong recycled cotton yarn, so as to solve the problem in the above-mentioned related technology that small pieces of cotton fibers after tearing are often still adhered to the cotton bale, affecting the subsequent cotton opening efficiency.

[0006] In the first aspect, the present application provides a production system for strong recycled cotton yarn using the following technical solutions: A production system for strong recycled cotton yarn comprises a base and a cotton opening mechanism, wherein the cotton opening mechanism comprises a support arm slidably arranged on the side of the base, a first driving member driving the support arm to slide back and forth along the length direction of the base, a horizontal plate slidably arranged on the side of the support arm, and a second driving member driving the horizontal plate to slide up and down, and a cutting member is provided on the side of the horizontal plate facing the base; support plates are fixedly arranged on the vertical sides opposite to each other of the horizontal plate, a first push rod and a second push rod are horizontally arranged on the side of the support plate away from the horizontal plate, one end of the first push rod is hinged to the horizontal plate, a first electric cylinder is fixedly arranged on the support plate in the horizontal direction, both ends of the second push rod are respectively hinged to the end of the telescopic rod of the first electric cylinder and the other end of the second push rod, and scrapers are fixedly arranged on the side of the first push rod and the second push rod facing the base.

[0007] By adopting the above technical solution, during the process of opening the upper part of the cotton bale, the opened cotton bale is placed on the side of the base in advance, and then the first driving member drives the cutting member to slide along the length direction of the base, and the second driving member drives the cutting member to slide up and down for adjustment, and finally the cutting member opens the upper part of the cotton bale, which is convenient for subsequent processing; When it is necessary to scrape off the loosened cotton wool, the angles of the two scrapers are adjusted by adjusting the relative angles of the first push rod and the second push rod. Then the scrapers can slide back and forth with the cross plate to process the loosened part of the upper part of the cotton bale and scrape it to the ground, which is convenient for subsequent collection by other equipment, thereby improving the overall cotton opening efficiency of the production system.

[0008] Optionally, a connecting plate is fixedly provided on the side of the scraper away from the base, a plurality of fixing through holes are opened on the connecting plate, fixing screw holes are opened on the first push rod and the second push rod, and fixing bolts are provided above the base and pass through the fixing through holes and screwed into the fixing screw holes.

[0009] By adopting the above technical solution, due to the combined arrangement of the connecting plate and the fixing bolt, the user can install and fix the scraper by passing the fixing bolt through the fixing through hole and then screwing it into the fixing screw hole, which also facilitates subsequent disassembly and replacement.

[0010] Optionally, a cross beam is provided on the side of the support plate away from the base, and connecting rods bent toward the support plate are fixedly provided at both ends of the cross beam, and the ends of the connecting rods are fixedly connected to the support plate; a second electric cylinder is fixedly provided on the vertical side surface along the cross beam, and the telescopic rod of the second electric cylinder faces downward and is hinged with an adjusting rod, and the ends of the first push rod and the second push rod that are close to each other are hinged to the other end of the adjusting rod; all hinges of the first push rod, the second push rod and the adjusting rod are ball joints.

[0011] By adopting the above technical solution, due to the combination of the crossbeam, the second electric cylinder and the adjusting rod, when the vertical installation angle of the scraper needs to be adjusted, the second electric cylinder can be started, and the first push rod and the second push rod can be driven to rotate up and down through the adjusting rod, thereby realizing automatic adjustment of the vertical installation angle of the scraper.

[0012] Optionally, a plurality of telescopic rods with adjustable lengths are provided between the support plate and the cross plate in the horizontal direction, and both ends of the telescopic rods are respectively fixedly connected to the side surfaces of the cross plate and the support plate that are close to each other.

[0013] By adopting the above technical solution, due to the installation setting of the telescopic rod, the user can adjust the overall length of the telescopic rod to adjust the distance between the support plate and the cross plate according to actual conditions, and then adjust the scraping effect of the scraper on the loose cotton wool to enhance the corresponding usage performance.

[0014] Optionally, a first protective curtain and a second protective curtain with elastic deformation properties are provided above the base, and the first protective curtain and the second protective curtain are respectively fixedly connected to the sides of the first push rod and the second push rod away from the scraper, and the other sides of the first protective curtain and the second protective curtain are detachably connected to the vertical side of the horizontal plate.

[0015] By adopting the above technical solution, due to the coordinated arrangement of the first protective curtain and the second protective curtain, the user can use the first protective curtain and the second protective curtain to protect the upper part of the gap between the support plate and the cross plate according to actual conditions, thereby reducing the possibility of the loosened cotton wool scattering upward from the gap and facilitating the subsequent collection of the cotton wool.

[0016] Optionally, a hook is fixedly provided on one side of the first protective curtain and the second protective curtain, and a hanging ring for the hook to be inserted is fixedly provided on the vertical side surface of the horizontal plate.

[0017] By adopting the above technical solution, due to the combined setting of the hook and the hanging ring, the hook can be inserted into the corresponding hanging ring to achieve a detachable connection between the edges of the first protective curtain and the second protective curtain and the horizontal plate, which is convenient for the subsequent storage of the first protective curtain and the second protective curtain.

[0018] Optionally, a receiving cavity is provided on the side of the first push rod and the second push rod away from the scraper, and one side edge of the first protective curtain and the second protective curtain are respectively fixedly connected to the inner wall of the corresponding receiving cavity.

[0019] By adopting the above technical solution, due to the opening of the accommodating cavity, the user can store the second protective curtain and the first protective curtain into the corresponding accommodating cavity according to actual conditions, which is convenient for storing the corresponding protective curtains.

[0020] Optionally, a receiving trough is provided on the inner edge of the opening of the receiving cavity, and a cover plate is provided on the side of the horizontal plate, one side of which is hinged to the inner wall of the receiving trough through a hinge axis, and the other side of the cover plate is detachably connected to the inner wall of the receiving trough.

[0021] By adopting the above technical solution, when the first protective curtain and the second protective curtain are in the storage state, due to the installation arrangement of the cover plate, the opening of the accommodating cavity can be blocked by the cover plate, thereby reducing the possibility of the first protective curtain and the second protective curtain escaping from the corresponding accommodating cavity.

[0022] Optionally, a locking through hole is formed on the side edge of the cover plate away from the hinge axis, a locking screw hole is formed on the inner wall of the accommodating groove, and a locking bolt is formed on the side of the support plate that passes through the locking through hole and is screwed into the locking screw hole.

[0023] By adopting the above technical solution, due to the application setting of the locking bolt, when the cover plate needs to be locked inside the accommodating groove, after the locking bolt passes through the locking through hole, it only needs to be screwed into the corresponding locking screw hole to achieve the locking of the cover plate.

[0024] In the second aspect, the present application provides a production process for strong recycled cotton yarn using the following technical solution: A production process for strong regenerated cotton yarn comprises the steps of loosening bales, opening cotton, blending cotton, cleaning, combing, drawing, roving and spinning, wherein the cotton opening step uses any one of the production systems for the strong regenerated cotton yarn.

[0025] By adopting the above technical solution, the production efficiency of recycled cotton yarn is enhanced.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: In the process of opening the upper part of the cotton bale, the opened cotton bale is placed on the side of the base in advance, and then the cutting member is driven to slide along the length direction of the base by the first driving member, and the cutting member is driven to slide up and down by the second driving member, and finally the cutting member is used to open the upper part of the cotton bale, which is convenient for subsequent processing; When it is necessary to scrape off the loosened cotton wool, the angles of the two scrapers are adjusted by adjusting the relative angles of the first push rod and the second push rod. Then the scrapers can slide back and forth with the cross plate to process the loosened part of the upper part of the cotton bale and scrape it to the ground, which is convenient for subsequent collection by other equipment, thereby improving the overall cotton opening efficiency of the production system. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 It is a schematic diagram of the overall structure of Example 1 of the present application; Figure 2 This is a partial structural diagram of the installation and coordination of the cutting member in Embodiment 1 of the present application; Figure 3 This is a schematic diagram of the structure of the second embodiment of the present application, which shows the installation and cooperation of the first push rod and the second push rod; Figure 4 This is a partial structural diagram of the second embodiment of the present application, which embodies the installation and coordination of the second electric cylinder and the adjusting rod; Figure 5 It is a partial cross-sectional structural schematic diagram of the scraper installation cooperation embodied in the second embodiment of the present application; Figure 6 yes Figure 5 A magnified schematic diagram of part A; Figure 7 It is a partial cross-sectional structural schematic diagram of the installation and cooperation of the first protective curtain and the second protective curtain according to the second embodiment of the present application; Figure 8 It is a cross-sectional structural diagram of the cover plate installation cooperation embodied in the second embodiment of the present application; Fig. 9 yes Figure 7 A magnified schematic diagram of part B; Fig.10 It is a flowchart of the production process embodied in Example 3 of the present application.

[0029] In the figure, 1, base; 11, fixing bolt; 12, first protective curtain; 121, hook; 13, second protective curtain; 14, cover plate; 141, locking through hole; 15, locking bolt; 2, cotton opening mechanism; 21, support arm; 22, first driving member; 23, cross plate; 231, hanging ring; 24, second driving member; 25, cutting member; 251, first motor; 252, cutting roller; 253, cutting blade; 26, support plate; 27, cross beam; 271, connecting rod; 28, telescopic rod; 3, first push rod; 31, fixing screw hole; 32, accommodating cavity; 321, accommodating trough; 322, locking screw hole; 4, second push rod; 5, first electric cylinder; 6, scraper; 61, connecting plate; 611, fixing through hole; 7, second electric cylinder; 8, adjusting rod. DETAILED DESCRIPTION

[0030] The present application is further described in detail below in conjunction with all the accompanying drawings.

[0031] Embodiment 1: Reference Figure 1 and Figure 2 A production system of strong recycled cotton yarn comprises a base 1 and a cotton opening mechanism 2, wherein the cotton opening mechanism 2 comprises a support arm 21 slidably arranged on the side of the base 1, a first driving member 22 driving the support arm 21 to slide back and forth along the length direction of the base 1, a horizontal plate 23 slidably arranged on the side of the support arm 21, and a second driving member 24 driving the horizontal plate 23 to slide up and down, and a cutting member 25 is arranged on the side of the horizontal plate 23 facing the base 1; The first driving member 22 is a combination structure of a motor and a screw arranged in the horizontal direction, and can also be a combination structure of a linear motor and a synchronous belt, and the driving structure is not unique; the second driving member 24 is a motor and a screw structure arranged in the vertical direction, which will not be repeated here; the cutting member 25 includes a first motor 251 fixed on one side of the horizontal plate 23, and a cutting roller 252 located on the lower side of the horizontal plate 23. A plurality of cutting blades 253 are evenly distributed on the outer periphery of the cutting roller 252. The first motor 251 drives the cutting roller 252 and the cutting blades 253 to reciprocate, so as to loosen the upper part of the cotton bale.

[0032] The implementation principle of the embodiment of the present application is: During the operation of the production system, the opened cotton bale is placed on the upper side of the base 1 in advance, and then the cutting member 25 is driven by the first driving member 22 to slide along the length direction of the base 1, and the cutting member 25 is driven by the second driving member 24 to slide up and down, and finally the cutting member 25 loosens the upper part of the cotton bale to facilitate subsequent processing.

[0033] Embodiment 2: Reference Figure 3 and Figure 4 The embodiment of the present application is different from the embodiment 1 in that a support plate 26 is fixedly provided on the vertical side surfaces opposite to the horizontal plate 23, a cross beam 27 is provided on the side of the support plate 26 away from the base 1, and connecting rods 271 bent toward the support plate 26 are integrally formed at both ends of the cross beam 27, wherein the ends of the connecting rods 271 are welded and fixed to the upper side surface of the support plate 26; A first push rod 3 and a second push rod 4 are provided in the horizontal direction on the side of the support plate 26 away from the horizontal plate 23, one end of the first push rod 3 is hinged to the horizontal plate 23, a first electric cylinder 5 is fixedly provided on the support plate 26 in the horizontal direction, both ends of the second push rod 4 are respectively hinged to the end of the telescopic rod of the first electric cylinder 5 and the other end of the second push rod 4, and a scraper 6 is fixedly provided on the side of the first push rod 3 and the second push rod 4 facing the base 1; A second electric cylinder 7 is fixedly arranged on the vertical side surface along the cross beam 27, the telescopic rod of the second electric cylinder 7 is downwardly facing and is hinged with an adjusting rod 8, and the ends of the first push rod 3 and the second push rod 4 close to each other are hinged with the other end of the adjusting rod 8; all the hinges of the first push rod 3, the second push rod 4 and the adjusting rod 8 are ball joints; During the cotton opening process by the cotton opening mechanism 2, the installation angle and installation height of the scraper 6 are pre-adjusted, and then the user can use the scraper 6 to process the loosened part of the upper part of the cotton bale and scrape it to the ground. Other equipment can be used to collect it later to avoid the loosened part continuing to adhere to the upper part of the cotton bale.

[0034] Reference Figure 5 and Figure 6 A connecting plate 61 is integrally formed on the side of the scraper 6 away from the base 1, wherein the connecting plate 61 is provided with a plurality of fixing through holes 611, and the first push rod 3 and the second push rod 4 are both provided with fixing screw holes 31, and a fixing bolt 11 is provided above the base 1 and penetrates the fixing through hole 611 and is screwed into the fixing screw hole 31, so as to realize the detachable installation of the scraper 6.

[0035] Reference Figure 4 and Figure 5 Two length-adjustable telescopic rods 28 are provided between the support plate 26 and the cross plate 23 in the horizontal direction, wherein the two ends of the telescopic rods 28 are respectively fixedly connected to the side surfaces of the cross plate 23 and the support plate 26 close to each other, and the specific length adjustment structure is not repeated here, thereby the distance between the cross plate 23 and the support plate 26 can be adjusted.

[0036] Reference Figure 7 A first protective curtain 12 and a second protective curtain 13 with elastic deformation performance are provided above the base 1. The first protective curtain 12 and the second protective curtain 13 are respectively fixedly connected to the sides of the first push rod 3 and the second push rod 4 away from the scraper 6. The other sides of the first protective curtain 12 and the second protective curtain 13 are detachably connected to the vertical side of the horizontal plate 23; The user can use the first protective curtain 12 and the second protective curtain 13 to protect the gap between the support plate 26 and the cross plate 23 according to actual conditions, thereby reducing the possibility of the loosened cotton wool scattering upward from the gap and facilitating the subsequent collection of the cotton wool; and because the first protective curtain 12 and the second protective curtain 13 have good elastic deformation properties, the scraper 6 can be used at any angle.

[0037] Reference Figure 7 and Figure 8The first push rod 3 and the second push rod 4 are provided with a receiving cavity 32 on the side away from the scraper 6, and the first protective curtain 12 and the second protective curtain 13 are respectively fixedly connected to the inner wall of the corresponding receiving cavity 32; a receiving groove 321 is provided on the inner edge of the opening of the receiving cavity 32, and a cover plate 14 is provided on the side of the horizontal plate 23, one side of which is hinged to the inner wall of the receiving groove 321 through a hinge shaft, and the other side of the cover plate 14 can be rotated and inserted into the inside of the receiving groove 321; A locking through hole 141 is provided on the side edge of the cover plate 14 away from the hinge axis, and a locking screw hole 322 is provided on the inner wall of the accommodating groove 321. A locking bolt 15 is provided on the side of the support plate 26, which passes through the locking through hole 141 and is screwed into the locking screw hole 322. The locking bolt 15 is a butterfly bolt, which facilitates the first protective curtain 12 and the second protective curtain 13 to be received in the corresponding accommodating cavity 32.

[0038] Reference Figure 7 and Fig. 9 A hook 121 is fixedly provided on one side of the first protective curtain 12 and the second protective curtain 13, and a hanging ring 231 for the hook 121 to be inserted is fixedly provided on the vertical side of the horizontal plate 23, so as to realize the detachable connection between the first protective curtain 12 and the second protective curtain 13 and the vertical side of the horizontal plate 23, which is convenient for the subsequent storage of the first protective curtain 12 and the second protective curtain 13.

[0039] The implementation principle of the embodiment of the present application is: During the process of opening the upper part of the cotton bale, the scraper 6 is rotated upward to avoid the scraper 6 interfering with the upper part of the cotton bale during the process, thereby ensuring smooth opening; When it is necessary to scrape off the loosened cotton wool, the scraper 6 is rotated downward and adjusted, and then the user can use the scraper 6 to process the loosened part of the upper part of the cotton bag and scrape it onto the ground, which can be collected later using other equipment.

[0040] Embodiment 3: Reference Fig.10 A production process for strong regenerated cotton yarn includes loosening, opening, blending, cleaning, carding, drawing, roving and spinning steps, wherein the cotton opening step uses the production system of the strong regenerated cotton yarn in Example 1 and Example 2.

[0041] Unless otherwise defined, the terms or scientific terms used in this application should be understood by people with ordinary skills in the field to which this application belongs. The "first", "second", "third" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different components. "One" or "one" and other similar words do not indicate a quantitative limit, but indicate that there is at least one. "Including" or "comprising" and other similar words mean that the elements or objects appearing in front of "including" or "comprising" cover the elements or objects listed after "including" or "comprising" and their equivalents, and do not exclude other elements or objects. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The embodiments of this specific implementation are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. The same components are represented by the same figure marks. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A production system for strong recycled cotton yarn, comprising a base (1) and a cotton opening mechanism (2), wherein the cotton opening mechanism (2) comprises a support arm (21) slidably arranged on a side of the base (1), a first driving member (22) driving the support arm (21) to slide back and forth along the length direction of the base (1), a transverse plate (23) slidably arranged on a side of the support arm (21), and a second driving member (24) driving the transverse plate (23) to slide up and down, wherein a cutting member (25) is provided on the side of the transverse plate (23) facing the base (1); It is characterized in that Support plates (26) are fixedly provided on the vertical side surfaces opposite to the transverse plate (23); a first push rod (3) and a second push rod (4) are horizontally provided on the side surface of the support plate (26) away from the transverse plate (23); one end of the first push rod (3) is hinged to the transverse plate (23); a first electric cylinder (5) is fixedly provided on the support plate (26) in the horizontal direction; two ends of the second push rod (4) are respectively hinged to the end of the telescopic rod of the first electric cylinder (5) and the other end of the second push rod (4); and scrapers (6) are fixedly provided on the sides of the first push rod (3) and the second push rod (4) facing the base (1).

2. A production system for strong recycled cotton yarn according to claim 1, characterized in that: A connecting plate (61) is fixedly provided on the side of the scraper (6) away from the base (1), and a plurality of fixing through holes (611) are provided on the connecting plate (61). Fixing screw holes (31) are provided on the first push rod (3) and the second push rod (4). A fixing bolt (11) is provided on the top of the base (1) and passes through the fixing through holes (611) and is screwed into the fixing screw holes (31).

3. The production system of strong regenerated cotton yarn according to claim 1, characterized in that: A crossbeam (27) is provided on the side of the support plate (26) away from the base (1), and connecting rods (271) bent toward the support plate (26) are fixedly provided at both ends of the crossbeam (27), and the ends of the connecting rods (271) are fixedly connected to the support plate (26); A second electric cylinder (7) is fixedly provided on the vertical side surface along the cross beam (27); the telescopic rod of the second electric cylinder (7) faces downward and is hingedly connected to an adjusting rod (8); the ends of the first push rod (3) and the second push rod (4) close to each other are hingedly connected to the other end of the adjusting rod (8); all the hinged joints of the first push rod (3), the second push rod (4) and the adjusting rod (8) are ball joints.

4. A production system for strong regenerated cotton yarn according to claim 3, characterized in that: A plurality of telescopic rods (28) with adjustable lengths are arranged between the support plate (26) and the transverse plate (23) in the horizontal direction, and two ends of the telescopic rods (28) are respectively fixedly connected to the side surfaces of the transverse plate (23) and the support plate (26) close to each other.

5. A production system for strong regenerated cotton yarn according to claim 4, characterized in that: A first protective curtain (12) and a second protective curtain (13) having elastic deformation properties are provided above the base (1); the first protective curtain (12) and the second protective curtain (13) are respectively fixedly connected to the side of the first push rod (3) and the second push rod (4) away from the scraper (6); the other side of the first protective curtain (12) and the second protective curtain (13) are detachably connected to the vertical side of the horizontal plate (23).

6. A production system for strong regenerated cotton yarn according to claim 5, characterized in that: A hook (121) is fixedly provided on one side of the first protective curtain (12) and the second protective curtain (13), and a hanging ring (231) for the hook (121) to be inserted is fixedly provided on the vertical side surface of the horizontal plate (23).

7. The production system of strong regenerated cotton yarn according to claim 5, characterized in that: The first push rod (3) and the second push rod (4) are each provided with a receiving cavity (32) on the side away from the scraper (6), and one side edge of the first protective curtain (12) and the second protective curtain (13) are respectively fixedly connected to the inner wall of the corresponding receiving cavity (32).

8. The production system of strong regenerated cotton yarn according to claim 7, characterized in that: An accommodating trough (321) is provided on the inner edge of the opening of the accommodating cavity (32), and a cover plate (14) is provided on the side of the transverse plate (23), one side of which is hinged to the inner wall of the accommodating trough (321) via a hinge axis, and the other side of the cover plate (14) is detachably connected to the inner wall of the accommodating trough (321).

9. A production system for strong regenerated cotton yarn according to claim 8, characterized in that: A locking through hole (141) is provided on the side edge of the cover plate (14) away from the hinge axis, a locking screw hole (322) is provided on the inner wall of the accommodating groove (321), and a locking bolt (15) is provided on the side of the support plate (26) and passes through the locking through hole (141) and is then screwed into the locking screw hole (322).

10. A production process for strong recycled cotton yarn, characterized in that: The method comprises the steps of loosening the bale, opening the cotton, blending the cotton, cleaning, carding, drawing, roving and spinning, wherein the cotton opening step uses the production system of the strong regenerated cotton yarn according to any one of claims 1 to 9.

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