Blended flame-retardant core-spun yarn, production preparation equipment and processing technology

Abstract

The application discloses a kind of blended flame-retardant core yarn, including: the core yarn in the inside of blended yarn, the sheath yarn in the outermost side of blended yarn and the isolation yarn between core yarn and sheath yarn, wherein: core yarn is synthetic long yarn, including two combinations in oxidation polyethylene, oxidation polypropylene and oxidation polystyrene;Sheath yarn is made of polyester and acrylic interlaced weaving;Isolation yarn is formed by cotton fiber mixed carbon fiber material, is threadedly wound outside core yarn, sheath yarn is interlaced weaving and covered outside isolation yarn, the synthetic ratio of core yarn, sheath yarn and isolation yarn is 3:3.12:3.88.The application can realize the purpose of adjusting the clearance between rubber rings with the size change of fiber strip by the position of floating assembly movement during fiber strip drafting process when processing fiber strip, and can change the clearance between rubber rings when processing different specifications of fiber strip, to ensure the stable friction force between rubber ring and fiber strip.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of blended flame-retardant core-spun yarn, in particular to a blended flame-retardant core-spun yarn, a production preparation device and a processing technology. BACKGROUND

[0002] Drafting refers to the process of lengthening and thinning the sliver, the purpose is to make the fibers more parallel and straight, and to improve the quality and strength of the yarn. Both roving and spinning need to be drafted, and both roving and spinning use the speed difference between the roller and the rubber ring to achieve drafting.

[0003] The roller and the rubber ring are the main components of the drafting mechanism, which realizes the drafting effect through the friction and cohesion force on the sliver. The speed difference between the roller and the rubber ring is the key factor of drafting, which determines the elongation of the sliver and the tex of the yarn.

[0004] The roller refers to a metal cylinder used for drafting the sliver, generally there are front roller, middle roller and rear roller, their diameters and rotating speeds are different, forming different linear speed differences, thereby realizing the drafting effect. The surface of the roller generally has grooves or knurls to increase the cohesion and friction of the sliver. The rubber ring refers to a rubber ring that is sleeved on the roller, generally there are upper rubber ring and lower rubber ring, their diameters are smaller than the roller, also forming different linear speed differences, thereby realizing the drafting effect. The surface of the rubber ring is generally smooth or has fine lines to adapt to different slivers.

[0005] The speed difference between the roller and the rubber ring is the key factor of drafting, which determines the elongation of the sliver and the tex of the yarn. The speed difference between the roller and the rubber ring is realized by adjusting the rotating speed of the roller and the diameter of the rubber ring. Generally, the rotating speed of the front roller is the fastest, the rotating speed of the rear roller gradually decreases, and the diameter of the rubber ring also decreases. In this way, the speed difference between the front roller and the rubber ring is the largest, and the speed difference between the rear roller and the rubber ring gradually decreases. In this way, the sliver can be drafted more in the front section and less in the rear section, ensuring the uniformity of the sliver and the quality of the yarn.

[0006] During the drafting process, due to the difference in thickness of the sliver, the same drafting ratio is used for the drafting of the sliver, which will cause the sliver to become worse. During drafting, the front roller drives and then transfers to the rear roller and rubber ring, and the rubber ring generates friction to draft the sliver. When drafting different thickness of the sliver, the same rubber ring gap will cause the sliver to be unstable, and slippage will occur during the drafting process, which does not meet the transmission ratio of the front and rear rollers. SUMMARY

[0007] One of the purposes of the present application is to provide a blended flame-retardant core yarn, a production preparation device and a processing technology, which can adjust the draft ratio according to the thickness of the fiber strip when the fiber strip is drafted in the blended flame-retardant core yarn, and can also correct the gap between the rubber rings due to the size change of the fiber strip, so that the fiber strip and the rubber ring have stable friction force.

[0008] To achieve the above purpose, the present application is realized by the following technical scheme: a blended flame-retardant core yarn, comprising:

[0009] The core yarn is located inside the blended yarn, the sheath yarn is located at the outermost side of the blended yarn, and the isolation yarn is located between the core yarn and the sheath yarn, wherein:

[0010] The core yarn is a synthetic long yarn, which comprises two combinations of oxidized polyethylene, oxidized polypropylene and oxidized polystyrene;

[0011] The sheath yarn is formed by interlacing polyester and acrylic;

[0012] The isolation yarn is formed by mixing cotton fibers and carbon fiber materials, and is spirally wound outside the core yarn. The sheath yarn is interlaced to cover the outside of the isolation yarn. The synthetic ratio of the core yarn, the sheath yarn and the isolation yarn is 3:3.12:3.88.

[0013] A blended flame-retardant core yarn production preparation device is used for drafting the fiber strip required for processing the above-mentioned blended flame-retardant core yarn, ensuring the quality and strength of the fiber strip, comprising:

[0014] A machine body;

[0015] A front roller, a transition roller and a rear roller are sequentially arranged inside the machine body. The fiber strip is input from the rear roller, passes through the transition roller and is output from the front roller. The rear roller is configured to contact the fiber strip with rubber rings and form friction force;

[0016] A floating assembly is located on both sides of the transition roller, and a conical hole is formed in the floating assembly. The conical hole is arranged in the direction of the draft of the fiber strip, and the inner wall of the conical hole is configured with knurls. When the fiber strip is drafted in the front roller, the transition roller and the rear roller, the floating assembly is driven to slide in the machine body by friction force;

[0017] An adjusting assembly is located inside the rubber ring and moves synchronously with the floating assembly, and adjusts the support force borne by the rubber ring. The rear roller is driven by the friction force between the rubber ring and the fiber strip generated by the movement of the fiber strip;

[0018] A driving device cooperates with the front roller, the transition roller and the rear roller and drives the front roller and the rear roller.

[0019] In one or more embodiments of the present application, the front roller, the transition roller and the rear roller are all configured with roller rollers, the diameter of the roller roller in the front roller is less than the diameter of the roller roller in the transition roller, and the diameter of the roller roller in the rear roller is less than the diameter of the roller roller in the transition roller, the rear roller further comprises a support structure located inside the machine body and fixedly connected to the machine body, the rubber ring is sleeved outside the roller roller in the rear roller and the support structure, and the support structure is arranged in an upper and lower manner and located on the side of the rear roller close to the transition roller.

[0020] In one or more embodiments of the present application, the middle part of the roller roller is concave to form an annular groove, and the inner wall of the groove is arc-shaped, a baffle is arranged inside the groove, the baffle is arranged in an inclined and symmetrical manner, an elastic sheet is arranged at one end of the baffle away from the inner wall of the groove, the elastic sheet is made of rubber, and anti-skid lines are arranged on the surface of the elastic sheet.

[0021] In one or more embodiments of the present application, the floating assembly comprises:

[0022] The sleeve is arranged outside the connecting rod connected to the inner wall of the machine body, the floating head is arranged inside the sleeve and slides along the axis of the sleeve, and the tapered hole is arranged inside the floating head.

[0023] The hydraulic pipe is detachably connected to one end of the sleeve, the extrusion cavity in communication with the hydraulic pipe is formed inside the sleeve, the push head extending into the extrusion cavity is arranged on both sides of the floating head, and the push head is fixed to the outside of the floating head and abuts against the inner wall of the extrusion cavity.

[0024] The rigid pipe is connected to the end of the hydraulic pipe away from the sleeve and fixed to the inside of the machine body, the push rod is arranged inside the rigid pipe, the sliding switch is arranged at one end of the push rod outside the rigid pipe, the sliding switch is electrically connected to the adjustment structure and forms control over the adjustment structure.

[0025] The tension spring is arranged at one end of the floating head away from the hydraulic pipe, and the two ends of the tension spring are fixedly connected to the sleeve and the floating head respectively and stretch the floating head back to the original position.

[0026] In one or more embodiments of the present application, the floating head comprises:

[0027] The body block is arranged between the push heads and connected to the push heads, the tapered pipe is arranged inside the body block, the tapered hole is arranged inside the tapered pipe, and the deformation groove is arranged at one end of the tapered pipe with a smaller size in an annular and symmetrical manner.

[0028] The adjustment ring extends from one end of the body block close to the tension spring to the inside of the body block, the magnetic block A is arranged inside one end of the adjustment ring extending to the inside of the body block, the magnetic block B is arranged at one end of the tapered pipe opening the deformation groove, the magnetic block A and the magnetic block B repel each other at one end close to each other, and the magnetic block A and the magnetic block B are arranged in an annular manner and form different repulsion force combinations.

[0029] In one or more embodiments of the present application, the support structure and the adjusting assembly are configured to support the rubber ring, wherein the rubber ring is concave and arc-shaped on the outer side of the fiber strip, and the support structure comprises:

[0030] The upper support body and the lower support body are arranged on the inner side of the upper rubber ring and the lower rubber ring respectively and support the rubber ring to be in a taut state, the upper support body and the lower support body are both multi-point outwardly extending, and each outwardly extending point is configured with a roller that is in contact with the rubber ring, the roller is rotatably arranged on the inner side of the upper support body and the lower support body, and the inner side of the rubber ring is matched with the roller;

[0031] The bracket is fixed on the inner side of the machine body and limits the positions of the upper support body and the lower support body, and the upper support body and the lower support body rotate around the support point position of the bracket.

[0032] In one or more embodiments of the present application, the adjusting structure comprises:

[0033] The telescopic rod is fixed in the machine body, the telescopic rod is arranged with a sliding carriage at the telescopic end, the sliding carriage is driven by the telescopic rod to change the position, the sliding carriage is arranged with a support bracket at one end of the rubber ring to form support for the rubber ring, an inclined pressing groove is formed in the sliding carriage, and the support bracket extends into the pressing groove and is limited by the pressing groove;

[0034] The pressing plate is slidably arranged in the machine body, an air cylinder is arranged on the upper part of the pressing plate to control the position of the pressing plate, the air cylinder is connected with the support bracket on the outer side of the pressing plate, and the push plate is movably sleeved on the outer sides of the pressing plate and the support bracket at both ends;

[0035] The arc-shaped plate is arranged on the inner side of the support bracket and is limited by the machine body.

[0036] The blended flame-retardant core-spun yarn processing technology is used to process the blended flame-retardant core-spun yarn by using the blended flame-retardant core-spun yarn production and preparation equipment, and comprises the following steps:

[0037] Step 1: pre-spinning treatment, different types or different properties of fibers are mixed in a certain proportion, and are subjected to dispersion, shaking, cleaning, elimination of adhesion between fibers and impurities, further carding, drawing, and roving treatment of the opened fibers, and then the roving is drawn through a floating assembly by a rear roller, and then is drawn through a transition roller and a front roller;

[0038] Step 2: core spinning, two of the three types of oxidized polyethylene, oxidized polypropylene and oxidized polystyrene are combined as core filaments, polyester and acrylic are interlaced to form sheath yarn, cotton fiber is mixed with carbon fiber material to form isolation yarn, and the isolation yarn is twisted by ring spinning, electrospinning and eddy spinning, the core filaments are wrapped with the isolation yarn, and the isolation yarn is wrapped with the sheath yarn;

[0039] Step three: finishing treatment, the yarn is washed, chemically washed, the grease, dirt, impurities are removed, the cleaned yarn is dried, the moisture is removed, and the dried yarn is heat treated to form a certain shape and structure.

[0040] In one or more embodiments of the present application, the synthetic ratio of the core yarn, the sheath yarn and the separating yarn is 3:3.12:3.88, and the gap of the roller is adjusted after the state of the adjustment assembly of the draft process is changed.

[0041] Advantages

[0042] The present application provides a blended flame-retardant core-spun yarn, production preparation equipment and processing technology. Compared with the prior art, the following advantages are achieved:

[0043] 1. When processing the fiber strip, the position of the floating assembly capable of moving during the fiber strip drafting process is used to adjust the gap between the rubber rings as the size of the fiber strip changes. When processing fiber strips of different specifications, the gap between the rubber rings can be changed to ensure stable friction between the rubber rings and the fiber strip, preventing slipping and affecting the draft ratio.

[0044] 2. The conical hole is arranged at the middle position of the floating assembly. When the fiber strip is drafted, the fiber strip passes through the conical hole, and the knurling inside the conical hole can ensure the friction between the fiber strip and the conical hole. Therefore, the fiber strip subjected to drafting can drive the floating head to move to different positions through different friction forces, following the change in the size of the fiber strip.

[0045] 3. The movement of the floating head is directly fed back to the adjustment assembly, and the adjustment assembly is arranged to ensure that the rubber ring can stably hold the fiber strip. When the fiber strip is moved by the front roller, the rear roller can be driven to rotate. The friction between the fiber strip and the rubber ring is the best way to drive the rubber ring to rotate, ensuring that the friction between the rubber ring and the fiber strip can ensure stable movement of the rubber ring.

[0046] 4. The conical hole inside the floating head is configured to be adjustable. During use, the conical hole is adjusted by magnetic force, so that the fiber strip size range adapted to the conical hole is larger, and thus different fiber strips can be stably drafted during drafting, so that the fiber strip can stably move without falling off. BRIEF DESCRIPTION OF DRAWINGS

[0047] Figure 1 It is a perspective view of the present application;

[0048] Figure 2 It is a schematic view of the internal structure of the present application;

[0049] Figure 3 Schematic diagram of the roller of the present application;

[0050] Figure 4 Schematic diagram of the floating assembly of the present application;

[0051] Figure 5 Cross-sectional view of the floating assembly of the present application;

[0052] Figure 6 Exploded view of the floating head of the present application;

[0053] Figure 7 Schematic diagram of the deformation groove of the present application;

[0054] Figure 8 Schematic diagram of the rear roller of the present application;

[0055] Figure 9 Schematic diagram of the rear roller of the present application;

[0056] Figure 10 Schematic diagram of the support frame of the present application;

[0057] Figure 11 Schematic diagram of the arc-shaped plate of the present application.

[0058] In the figure: 1 machine body, 2 front roller, 3 transition roller, 4 rear roller, 5 floating assembly, 6 adjustment assembly, 7 driving device, 8 rubber ring;

[0059] 11 roller, 12 groove, 13 baffle, 14 elastic sheet, 15 support structure, 151 upper support body, 152 lower support body, 153 roller, 154 support frame;

[0060] 51 sleeve, 52 floating head, 53 tapered hole, 54 hydraulic pipe, 55 extrusion cavity, 56 rigid pipe, 57 push rod, 58 push head, 59 sliding switch, 510 tension spring;

[0061] 521 body block, 522 tapered pipe, 523 deformation groove, 524 adjusting ring, 525 magnetic block A, 526 magnetic block B;

[0062] 61 telescopic rod, 62 sliding carriage, 63 pressing groove, 64 pressing plate, 65 air rod, 66 push plate, 67 arc-shaped plate, 68 support frame. DETAILED DESCRIPTION

[0063] Embodiments of the present application will be described below with reference to the accompanying drawings. For the purpose of explanation, numerous specific details will be set forth in the description below. It should be appreciated that these specific details are not intended to limit the present application in any way. Rather, the specific details are included for the purpose of providing a thorough understanding of the present application. Moreover, various well-known structures and devices are shown in block diagram form, and are described in only a general manner. Further, features of the various embodiments can be interchanged, where possible, unless otherwise explicitly stated.

[0064] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and the present disclosure. Unless expressly defined in the specification, terms such as "comprises," "comprising," "includes," "including," and the like are not intended to exclude many embodiments from the technical scope of the present application.

[0065] Referring to Figures 1-11 The present application provides a blended flame-retardant core-spun yarn, comprising:

[0066] a core yarn located in the inside of the blended yarn, a sheath yarn located at the outermost side of the blended yarn, and a barrier yarn located between the core yarn and the sheath yarn, wherein:

[0067] The core yarn is a synthetic long yarn, comprising two combinations of oxidized polyethylene (OPE), oxidized polypropylene (OPP), and oxidized polystyrene (OPES);

[0068] The sheath yarn is formed by interlacing polyester and acrylic;

[0069] The barrier yarn is formed by mixing cotton fibers and carbon fiber materials, and is spirally wound outside the core yarn, and the sheath yarns are interlaced to cover the outside of the barrier yarn, and the synthetic ratio of the core yarn, the sheath yarn, and the barrier yarn is 3:3.12:3.88.

[0070] In the present embodiment, the sheath yarn and the barrier yarn can play a protective role for the internal core yarn, and the outer sheath yarn will be worn out first during use, and the high strength and wear resistance of polyester and acrylic can ensure the use strength and service life of the blended yarn, and the internal sheath yarn and the core yarn will not be damaged during use.

[0071] The blended flame-retardant core-spun yarn production and preparation equipment is used for drafting the fiber strip required for processing the above-mentioned blended flame-retardant core-spun yarn, and ensures the quality and strength of the fiber strip, and comprises:

[0072] A machine body 1;

[0073] The front roller 2, the transition roller 3 and the rear roller 4 are arranged in the machine body 1 in sequence, and the front roller 2, the transition roller 3 and the rear roller 4 are arranged at different positions to limit the conveying path of the fiber strip, the fiber strip is input by the rear roller 4, passes through the transition roller 3 and is output by the front roller 2, and the rear roller 4 is arranged with the rubber ring 8 to contact the fiber strip and form a friction force with the fiber strip;

[0074] The floating assembly 5 is located on both sides of the transition roller 3, a tapered hole 53 is formed in the floating assembly 5, the tapered hole 53 is arranged in the drafting direction of the fiber strip, the inner wall of the tapered hole 53 is arranged with knurling, and the fiber strip is drafted in the front roller 2, the transition roller 3 and the rear roller 4, and the fiber strip drives the floating assembly 5 to slide in the machine body 1 by friction force;

[0075] The adjusting assembly 6 is located in the inside of the rubber ring 8 and moves synchronously with the floating assembly 5, and adjusts the support force borne by the rubber ring 8, and the rear roller 4 drives the rubber ring 8 by the friction force generated by the movement of the fiber strip;

[0076] The driving device 7 cooperates with the front roller 2, the transition roller 3 and the rear roller 4 and forms the driving of the front roller 2 and the rear roller 4.

[0077] In the embodiment, the purpose of arranging the floating assembly 5 is to detect the actual size of the fiber strip, when drafting, the thickness of the fiber strip itself will generate different friction forces with the inner wall of the tapered hole 53 in the floating assembly 5, and the self-weight of the floating assembly 5 will be driven to move to different positions under different friction forces, and the adjusting assembly 6 controls the support force borne in the rubber ring 8 according to the position of the fiber strip when the fiber strip is at different positions.

[0078] The different friction forces between the rubber ring 8 and the fiber strip will cause different movement speeds of the fiber strip, and the different driving speeds of the front roller 2, the transition roller 3 and the rear roller 4 will generate different drafting ratios, and the insufficient friction force between the fiber strip and the outer wall of the rubber ring 8 under different drafting ratios will cause slipping and affect normal drafting, and the driving device 7 is a motor.

[0079] In one embodiment, the front roller 2, the transition roller 3 and the rear roller 4 are all arranged with roller rollers 11, the diameter of the roller roller 11 in the front roller 2 is < the diameter of the roller roller 11 in the transition roller 3 < the diameter of the roller roller 11 in the rear roller 4, the rear roller 4 further includes a support structure 15, the support structure 15 is located in the machine body 1 and is fixedly connected to the machine body 1, the rubber ring 8 is sleeved outside the roller roller in the rear roller 4 and the support structure 15, and the support structure 15 is arranged in an up-down manner and located on the side of the rear roller 4 close to the transition roller 3.

[0080] In the embodiment, the roller 11 is arranged to form a clamping on the sliver, and the clamping can avoid the sliver being torn by the roller 11 due to the excessive friction between the rubber ring 8 and the sliver. The roller 11 is arranged to have different diameters, and the front roller 2 can extend the sliver when the roller 11 is driven.

[0081] The rubber ring 8 is elastically arranged, and when the roller 11 drives the rubber ring 8 to rotate, one side of the rubber ring 8 is loose and the other side is tight. The rubber ring 8 is used to drive the roller 11 to move, and the loose side is adjusted to the outside, so that the rubber ring 8 on the side of the sliver is not loose and arched when the sliver slides.

[0082] In an embodiment, the roller 11 is arranged to form a ring-shaped groove 12 in the middle, and the inner wall of the groove 12 is arc-shaped. The groove 12 is provided with a baffle 13, the baffle 13 is arranged to be inclined and symmetrical, the end of the baffle 13 away from the inner wall of the groove 12 is provided with an elastic sheet 14, and the elastic sheet 14 is made of rubber. The surface of the elastic sheet 14 is provided with anti-skid lines.

[0083] In the embodiment, in order to further ensure that the sliver can be stably stretched and not slide at the roller 11, the baffle 13 is used to form the elastic sheet 14, and the clamping force on the sliver is further increased to ensure that the clamping force on the sliver can be more stably clamped.

[0084] In another embodiment, the baffle 13 supports the elastic sheet 14, and the elastic sheet 14 has its own elastic force, but the elastic force of rubber is limited, and the baffle 13 is a rigid structure and cannot be deformed in use, so that a more stable clamping force is generated. Since the sliver will leave marks after being clamped and there is a problem of excessive extrusion, the baffle 13 is extended outward from the inside of the groove 12 to the inside of the groove 12, and a torsional spring is used to support the baffle 13. When the extrusion force of the baffle 13 on the sliver is large, the baffle 13 will retract, so that the problem of excessive extrusion can be avoided.

[0085] In an embodiment, the floating assembly 5 comprises:

[0086] The sleeve 51 is arranged to be connected to the inner wall of the body 1 by a connecting rod, and the floating head 52 is arranged to slide along the axis of the sleeve 51 inside the sleeve 51. The tapered hole 53 is located inside the floating head 52.

[0087] The hydraulic pipe 54 is detachably connected to one end of the sleeve 51, the sleeve 51 forms an extrusion cavity 55 communicating with the hydraulic pipe 54, the push head 58 extending to the inside of the extrusion cavity 55 is arranged on both sides of the floating head 52, and the push head 58 is fixed to the outside of the floating head 52 and abuts against the inner wall of the extrusion cavity 55;

[0088] The rigid pipe 56 is connected to the end of the hydraulic pipe 54 away from the sleeve 51 and is fixed to the inside of the machine body 1, the push rod 57 is arranged in the rigid pipe 56, the sliding switch 59 is arranged at the end of the push rod 57 away from the outside of the rigid pipe 56, the sliding switch 59 is electrically connected to the adjustment structure and forms the control of the adjustment structure;

[0089] The tension spring 510 is located at the end of the floating head 52 away from the hydraulic pipe 54, the two ends of the tension spring 510 are fixedly connected to the sleeve 51 and the floating head 52 respectively and stretch the floating head 52 back to the original position.

[0090] In the embodiment, the fiber strip passes through the inside of the floating head 52 when the fiber strip is stretched, so that the floating head 52 can slide in the process of use, the purpose of changing the position of the floating head 52 can be achieved, and due to the one-way stretching of the fiber strip in the process of use, the floating head 52 can only produce one-way movement, and the fiber strip is reset by the tension spring 510 after the fiber strip is stretched.

[0091] In one embodiment, the floating head 52 comprises:

[0092] The body block 521 is located between the push heads 58 and is connected with the push heads 58, the tapered pipe 522 is arranged in the inside of the body block 521, the tapered hole 53 is located in the inside of the tapered pipe 522, and the small-size end of the tapered pipe 522 is provided with the deformation groove 523, and the deformation groove 523 is arranged in a ring shape.

[0093] The adjustment ring 524 extends to the inside of the body block 521 from the end of the body block 521 close to the tension spring 510, the magnetic block A 525 is arranged in the inside of the end of the adjustment ring 524 extending to the inside of the body block 521, the magnetic block B 526 is arranged in the end of the tapered pipe 522 opening the deformation groove 523, the end close to the magnetic block A 525 of the magnetic block A 525 and the magnetic block B 526 repel each other, the magnetic block A 525 and the magnetic block B 526 are arranged in a ring shape and form different repulsion force combinations.

[0094] In the embodiment, the deformable tapered pipe 522, the magnetic block A 525 and the magnetic block B 526 capable of controlling the inner diameter of one side of the tapered pipe 522 are arranged, in use, the position of the magnetic block A 525 is controlled by rotating the adjustment ring 524, the magnetic block A 525 cooperates with different magnetic blocks B 526 to realize the extrusion of the tapered pipe 522 in the inside of the magnetic block B 526, the tapered pipe 522 is extruded by different extrusion forces to form different hole diameters at one end of the tapered hole 53 in the inside, and different fiber strips are applied.

[0095] In one embodiment, the support structure 15 and the adjusting assembly 6 are configured to support the rubber ring 8, wherein the rubber ring 8 is in contact with the outer side of the fiber strip and is concave and arc-shaped, the support structure 15 comprises:

[0096] The upper support body 151 and the lower support body 152 are respectively arranged on the inner side of the upper rubber ring 8 and the lower rubber ring 8 and support the rubber ring 8 to be in a taut state, the upper support body 151 and the lower support body 152 are both multi-point outwardly extending, and each outwardly extending point is configured to be fitted with a roller 153, the roller 153 is rotatably mounted on the inner side of the upper support body 151 and the lower support body 152, and the inner side of the rubber ring 8 is fitted with the roller 153;

[0097] The bracket 154 is fixed to the inner side of the machine body 1 and limits the position of the upper support body 151 and the lower support body 152, and the upper support body 151 and the lower support body 152 rotate around the fulcrum position of the bracket 154.

[0098] In this embodiment, the upper support body 151 and the lower support body 152 both support the rubber ring 8 through three points during use, the rollers 153 arranged on the inner side of the upper support body 151 and the lower support body 152 are all three points supporting the rubber ring 8, and the inner side of the rubber ring 8 is not excessively rubbed during rotation of the upper support body 151 and the lower support body 152.

[0099] In one embodiment, the adjusting structure comprises:

[0100] The telescopic rod 61 is fixed inside the machine body 1, the telescopic rod 61 is provided with a sliding frame 62 at the telescopic end, the sliding frame 62 is pushed by the telescopic rod 61 to change the position, the sliding frame 62 is provided with a support frame 68 at one end towards the rubber ring 8 to form support for the rubber ring 8, an inclined pressing groove 63 is formed in the inner side of the sliding frame 62, and the support frame 68 extends into the pressing groove 63 and is limited by the pressing groove 63;

[0101] The pressing plate 64 is slidably arranged inside the machine body 1, the upper part of the pressing plate 64 is provided with an air rod 65 to control the position of the pressing plate 64, the outer side of the pressing plate 64 is provided with the air rod 65 connected to the support frame 68, and the push plate 66 is movably sleeved on the outer side of the pressing plate 64 and the support frame 68;

[0102] The arc-shaped plate 67 is mounted on the inner side of the support frame 68 and is limited by the machine body 1.

[0103] In the embodiment, the support frame 68 is composed of three parts, one part is a mounting end, and the other two parts are sliding ends which can slide to both sides, in use, the pressing plate 64 can control the distance between the sliding ends, the pressing plate 64 drives the sliding ends to slide to both sides by pressing, and the arc-shaped plate 67 located outside the sliding ends is tightened by the limitation of the machine body 1 after being pushed outwards, so that the arc-shaped plate 67 protrudes to support the rubber ring 8.

[0104] The blended flame-retardant core-spun yarn processing technology is processed by the blended flame-retardant core-spun yarn production device, and includes the following steps:

[0105] Step one: pre-spinning treatment, different types or different performance fibers are mixed according to a certain proportion, and are dispersed, shaken, cleaned, and the adhesion and impurities between the fibers are eliminated, the opened fibers are further carded, drawn, and roved, and then the roving is passed through the floating assembly 5 from the back roller 4, and then is drawn by the transition roller 3 and the front roller 2;

[0106] Step two: core-spun yarn spinning, two of the oxidized polyethylene OPE, the oxidized polypropylene OPP and the oxidized polystyrene OPES are combined as core filaments, the polyester and the acrylic are interlaced to form sheath yarns, the cotton fiber and the carbon fiber material are mixed to form isolation yarns, and the core filaments are twisted by ring spinning, electrostatic spinning and eddy spinning, the isolation yarns are wrapped outside the core filaments, and the sheath yarns are wrapped outside the isolation yarns.

[0107] Step three: finishing treatment, the yarns are washed and chemically washed to remove grease, dirt and impurities, the cleaned yarns are dried to remove moisture and humidity, and the dried yarns are heat treated to form a certain shape and structure.

[0108] In one embodiment, the synthetic ratio of the core yarn, the sheath yarn and the isolation yarn is 3:3.12:3.88, and the roving drawing floating assembly 5 changes the gap of the back roller 4 after adjusting the state of the adjusting assembly 6 during the drawing process.

[0109] In summary, the technical scheme disclosed in the above embodiments of the application has at least the following advantages:

[0110] 1、The position of the fiber strip drawing process can drive the floating assembly 5 to move to achieve the purpose of adjusting the gap between the rubber rings 8 as the size of the fiber strip changes when the fiber strip is processed, and the gap between the rubber rings 8 can be changed to ensure the stable friction force between the rubber rings 8 and the fiber strip when different specifications of the fiber strip are processed, so that the drawing ratio is not affected.

[0111] 2. A tapered hole 53 is configured in the middle of the floating component 5. When the fiber strip is stretched, the fiber strip passes through the tapered hole 53. The knurling inside the tapered hole 53 can ensure the friction between the fiber strip and the tapered hole 53. Therefore, when the fiber strip is stretched, it can drive the floating head 52 to move to different positions through different friction forces, and change with the size of the fiber strip.

[0112] 3. The movement of the floating head 52 is directly fed back to the adjustment component 6. The adjustment component 6 is designed to ensure that the rubber ring 8 can stably clamp the fiber strip. When the fiber strip is driven by the front roller 2, it can drive the rear roller 4 to rotate. The friction between the fiber strip and the rubber ring 8 is the best way to drive the rubber ring 8 to rotate. Ensuring the friction between the rubber ring 8 and the fiber strip can ensure the stable movement of the rubber ring 8.

[0113] 4. In this invention, the internal conical hole 53 of the floating head 52 is configured to be adjustable. During use, the conical hole 53 is adjusted by magnetic force, so that the size range of the fiber strip that the conical hole 53 can adapt to is larger. Thus, during drawing, different fiber strips can achieve stable drawing, so that the fiber strips can move stably without detaching.

[0114] Although the present invention has been disclosed in conjunction with the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make various modifications and refinements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A production preparation apparatus for blended flame-retardant core-spun yarn, characterized by, The application relates to a device for adjusting the tension of a fiber strip, which comprises a machine body, front rollers, transition rollers and rear rollers arranged in the machine body in sequence, a fiber strip being input from the rear rollers, passing through the transition rollers and being output from the front rollers, the rear rollers being arranged to contact the fiber strip and form friction with the fiber strip, floating assemblies arranged on both sides of the transition rollers and having tapered holes formed in the floating assemblies, the tapered holes being arranged in the drafting direction of the fiber strip, the inner walls of the tapered holes being arranged with knurls, the fiber strip being drafted through the front rollers, the transition rollers and the rear rollers and driving the floating assemblies to slide in the machine body through friction, adjusting assemblies arranged inside the rubber rings and moving synchronously with the floating assemblies and adjusting the support force borne by the rubber rings, the rear rollers being driven by the friction between the rear rollers and the rubber rings through the movement of the fiber strip, and driving devices matched with the front rollers, the transition rollers and the rear rollers and forming the driving of the front rollers and the rear rollers. The front rollers, the transition rollers and the rear rollers are all arranged with roller rollers, the diameter of the roller rollers in the front rollers is smaller than that of the roller rollers in the transition rollers, the diameter of the roller rollers in the rear rollers is smaller than that of the roller rollers in the transition rollers, the rear rollers further comprise a support structure arranged in the machine body and fixedly connected with the machine body, the rubber rings are sleeved outside the roller rollers in the rear rollers and the support structure, the support structure is arranged on the side of the rear rollers close to the transition rollers and arranged in an up-down mode. The middle part of the roller roller is concave to form an annular groove, the inner wall of the groove is arc-shaped, a baffle is arranged in the groove, the baffle is arranged in an inclined mode and symmetrically arranged in an up-down mode, an elastic sheet is arranged at the end of the baffle away from the inner wall of the groove, the elastic sheet is made of rubber, and the surface of the elastic sheet is arranged with anti-skid lines. The floating assembly comprises a sleeve, a connecting rod arranged outside the sleeve and connected with the inner wall of the machine body, a floating head arranged inside the sleeve and sliding along the axis of the sleeve, and a tapered hole arranged inside the floating head. A hydraulic pipe is detachably connected with one end of the sleeve, an extrusion cavity is formed in the sleeve and communicated with the hydraulic pipe, push heads are arranged on both sides of the floating head and extended into the extrusion cavity, the push heads are fixed to the outer side of the floating head and abutted with the inner wall of the extrusion cavity, a rigid pipe is connected with the end of the hydraulic pipe away from the sleeve and fixed in the machine body, a push rod is arranged in the rigid pipe, a sliding switch is arranged at the end of the push rod away from the rigid pipe, the sliding switch is electrically connected with the adjusting structure and forms the control of the adjusting structure, and a tension spring is arranged at the end of the floating head away from the hydraulic pipe, the two ends of the tension spring are fixedly connected with the sleeve and the floating head and draft the floating head to reset. The floating head comprises a body block arranged between the push heads and connected with the push heads, a tapered tube arranged inside the body block, a tapered hole arranged inside the tapered tube, and a deformation groove arranged at the end of the tapered tube with a small size and arranged in a ring-shaped and symmetrical mode.

2. The blended flame retardant core spun yarn production preparation apparatus according to claim 1, characterized in that, The support structure and the adjusting assembly are arranged to form the support of the rubber ring, the outer side of the rubber ring contacting the fiber strip is concave and arc-shaped, and the support structure comprises 3. The apparatus for producing a blended flame-retardant core-spun yarn according to claim 2, wherein ​ 4. The apparatus according to claim 1, wherein ​ ​ ​ ​ ​ 5. The apparatus according to claim 4, wherein ​ ​ ​ 6. The apparatus according to claim 5, wherein ​ Upper support body and lower support body are arranged inside upper rubber ring and lower rubber ring respectively and support rubber ring to make rubber ring in tight state, upper support body and lower support body are all multiple points outwardly extending, and each outwardly extending point is configured with roller matched with rubber ring, roller is rotatably installed inside upper support body and lower support body, inside rubber ring is matched with roller; Support is fixed inside machine body and limits position of upper support body and lower support body, upper support body and lower support body rotate around support fulcrum position.

7. The apparatus according to claim 5, wherein the apparatus is characterized by: Adjusting structure includes: Telescopic rod is fixed inside machine body, telescopic rod telescopic end is provided with sliding frame, sliding frame is pushed to change position by telescopic rod, sliding frame is provided with support frame towards one end of rubber ring to form support to rubber ring, inclined pressing groove is formed in inside sliding frame, support frame extends to inside pressing groove and is limited by pressing groove; Pressing plate is slidably arranged inside machine body, air cylinder is arranged on upper part of pressing plate to form control to position of pressing plate, air cylinder connecting support frame is arranged on outside of pressing plate, movable sleeve is arranged on both ends of pushing plate outside pressing plate and support frame; Arc-shaped plate is installed inside support frame and is limited by machine body.

8. A process for the production of a blended flame retardant core spun yarn, for the production apparatus of a blended flame retardant core spun yarn according to any one of claims 1 to 7, characterized in that, Including the following steps: Step one: pre-spinning treatment, different types or different performance fibers are mixed in a certain proportion, dispersed, shaken, cleaned, and the adhesion and impurities between the fibers are eliminated, the opened fibers are further carded, drawn, and roved, and then the roving is passed through the floating assembly by the rear roller, and then the transition roller and the front roller are stretched; Step two: core spinning, two of the three kinds of oxidized polyethylene, oxidized polypropylene and oxidized polystyrene are combined as core yarn, polyester and acrylic are interlaced to form sheath yarn, cotton fiber mixed with carbon fiber material forms isolation yarn, and is twisted by ring spinning, electrospinning and eddy spinning, the isolation yarn is wrapped outside the core yarn, and the sheath yarn is wrapped outside the isolation yarn; Step three: finishing treatment, the yarn is washed and chemically washed to remove grease, dirt and impurities, the cleaned yarn is dried to remove moisture and humidity, and the dried yarn is heat treated to form a certain shape and structure.

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