CN110485020B

CN110485020B - Fixed-distance traction device for spinning yarns

Info

Publication number: CN110485020B
Application number: CN201910581796.7A
Authority: CN
Inventors: 熊英姿
Original assignee: Suzhou Juhuibang Information Technology Co ltd
Current assignee: Suzhou juhuibang Information Technology Co.,Ltd.
Priority date: 2019-06-30
Filing date: 2019-06-30
Publication date: 2021-07-13
Anticipated expiration: 2039-06-30
Also published as: CN110485020A; CN113308775A

Abstract

The invention discloses a fixed-distance traction device for spinning yarns, and belongs to the field of textile processing mechanical equipment. A drawing rack is arranged on the outer side of a drawing belt, a drawing motor is in transmission connection with the drawing belt through a transmission belt, a reciprocating guide plate is arranged on a reciprocating guide rod in a sliding mode, a drawing plate gear is in meshed connection with the drawing rack, a backward tension spring is horizontally connected between the reciprocating guide plate and a reciprocating base, a yarn supporting connecting plate is vertically and fixedly arranged above the reciprocating guide plate along the side of a forward stop rod, the end portions of the upper end and the lower end of a drawing support are respectively and horizontally and rotatably connected with a yarn feeding rotating roller and a yarn discharging rotating roller, and an auxiliary drawing rotating roller is horizontally arranged between the upper drawing rotating roller and the lower drawing. The yarn drawing device is reasonable in structural design, can quickly and stably draw and process the textile yarns, can adjust the horizontal drawing amplitude according to the types and specifications of the textile yarns, improves the automation degree of yarn drawing and processing, and meets the processing and using requirements.

Description

Fixed-distance traction device for spinning yarns

Technical Field

The invention belongs to the field of textile processing mechanical equipment, and particularly relates to a fixed-distance traction device for textile yarns, which is mainly applied to continuous drafting and stretching processing of the yarns.

Background

Along with the development of production industry and the improvement of living standard of people, people have higher and higher requirements on textile materials, and high-end textiles can be woven from the textile materials with excellent quality, so that the requirements of people on use can be met. The textile material refers to fiber and fiber products, and is particularly represented as fiber, yarn, fabric and composites thereof, in modern spinning, the research and development of new textile materials, particularly the development and use of nano-fiber break through the concept of the textile material in the traditional sense, and the textile material becomes an important component department of soft material. The yarn is an important textile material, is a product processed by various textile fibers into a certain fineness, can be used for weaving, rope making, thread making, knitting, embroidery and the like, and is divided into short staple yarn, continuous filament yarn and combined yarn of the short staple yarn and the continuous filament yarn. There are various methods for expressing the fineness of the yarn, such as number, metric count, english count, denier, etc. (see count), and the twist of the yarn is expressed in turns per meter or inch. The yarn can be used for spinning woolen sweaters, woolen trousers, woolen vests, scarves, hats and gloves in daily life and weaving various articles for clothes in spring and autumn, and has the decoration effect besides the heat preservation effect. The main characteristic parameters of the yarn in the production process comprise: bulk density, reflecting fiber packing characteristics; the twist angle and the curl of the fiber reflect the straightening degree of the fiber along the yarn axis; linear density (diameter) and coefficient of variation, reflecting yarn thickness and variation; the inter-fiber forces (friction factor, entanglement points, action segments or slip length, etc.) reflect the stability of the yarn structure. In the production and processing process of the yarn, the method for adjusting raw materials and changing the structure of the yarn can be utilized, the original natural fiber and the fiber with excellent performance meeting the requirement of easy care are combined by a certain spinning method, and the yarn with ideal effect, mainly including blended yarn and composite yarn, is obtained. The yarn is in the production and processing process, need carry out the tractive design with the yarn that bleaches the processing, especially to the elastic yarn of texture, the tractive design is showing important especially, current traction mechanism is in with yarn tractive in-process, be difficult to fast steady carry out the tractive processing with weaving yarn reciprocating, influence the yarn normally steady carry out the tractive processing, and current traction mechanism can not be according to the convenient accurate regulation yarn level tractive's of the kind and the specification of weaving yarn range, lead to being difficult to carry out the tractive processing with the yarn as required accurate, cause the yarn tractive easily inadequately or excessively, influence the quality of the normal tractive production and processing of yarn, can not satisfy the needs that the processing was used.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art, and provides the fixed-distance drawing device for the textile yarns, which has reasonable structural design, can quickly and stably draw the textile yarns, can adjust the horizontal drawing amplitude according to the types and specifications of the textile yarns, improves the automation degree of yarn drawing processing, and meets the processing and using requirements.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows: a fixed-distance traction device for textile yarns is characterized in that: the fixed-distance traction device for the textile yarns comprises a reciprocating base, a driving mechanism, a reciprocating mechanism and a yarn supporting mechanism, wherein the driving mechanism and the reciprocating mechanism are sequentially and fixedly arranged on the upper side of the reciprocating base along the horizontal direction, the yarn supporting mechanism is vertically and fixedly arranged on the reciprocating base on one side of the reciprocating mechanism, the driving mechanism comprises a traction motor, a driving rotating shaft, an auxiliary rotating shaft and a traction belt, two ends of one side of the reciprocating base are respectively and horizontally and rotatably connected with the driving rotating shaft and the auxiliary rotating shaft, the traction belt is horizontally arranged on the upper side of the reciprocating base, two sides of the traction belt are respectively wound and connected with the driving rotating shaft and the auxiliary rotating shaft, the surface of the outer side of the traction belt is horizontally and fixedly provided with a traction rack, the upper side of the driving rotating shaft is horizontally and fixedly provided with an auxiliary belt pulley, the main belt pulley and the auxiliary belt pulley are connected in a transmission manner through a transmission belt, the reciprocating mechanism comprises a reciprocating support, a reciprocating guide plate, a pulling plate gear, a retreating tension spring and a yarn supporting connecting plate, the reciprocating support is horizontally and fixedly arranged on a reciprocating base on one side of the pulling belt, two sides of the reciprocating support are respectively and horizontally and fixedly provided with a reciprocating guide rod, the reciprocating guide rods are parallel to the transmission direction of the pulling belt, the reciprocating guide plate is horizontally arranged on one side of the pulling belt, the reciprocating guide plate is arranged on the reciprocating guide rod in a sliding manner along the horizontal direction, the reciprocating guide plate is horizontally and rotatably connected with the pulling plate gear matched with the pulling rack along the side of the pulling belt, the pulling plate gear is meshed with the pulling rack, a gear clamping plate is horizontally arranged on the reciprocating guide plate on one side of the pulling plate gear, the middle part of the gear clamping plate is rotatably connected with the reciprocating guide, a rotary adjusting plate is horizontally arranged on the reciprocating guide plate at one side of the gear clamping plate, the rotary adjusting plate is of an L-shaped structure, the corner of the rotary adjusting plate is rotatably connected with the reciprocating guide plate, an operation tension spring is horizontally arranged between the end of the rotary adjusting plate along the gear clamping plate and the gear clamping plate, a push plate wedge block is horizontally and fixedly arranged at the other end of the rotary adjusting plate, a front push plate inclined plane and a rear push plate inclined plane are symmetrically arranged at two sides of the push plate wedge block, the gear clamping plate is fixedly provided with a disconnecting armature along the operation tension spring end, a front magnet support is fixedly arranged on the reciprocating guide plate at one side of the disconnecting armature, a disconnecting electromagnet is fixedly arranged at one side of the front magnet support, a disconnecting tension spring is horizontally connected between the reciprocating guide plate at one side of the disconnecting electromagnet and the, a clamping electromagnet is fixedly arranged on one side of the rear magnet support, a clamping armature is fixedly arranged on a rotating adjusting plate on one side of the clamping electromagnet, a clamping tension spring is horizontally connected between the rotating adjusting plate on one side of the clamping armature and a reciprocating guide plate, a retreating tension spring is horizontally connected between the reciprocating guide plate and a reciprocating base, a retreating stop lever and an advancing stop lever are respectively and vertically arranged on the reciprocating bases on two sides of the push plate wedge block, a yarn supporting connecting plate is vertically and fixedly arranged above the reciprocating guide plate along the advancing stop lever side, a yarn supporting mechanism is vertically and fixedly arranged on the reciprocating base on one side of the yarn supporting connecting plate, the yarn supporting mechanism comprises a fixing support plate, a drawing support, an upper drawing rotary roller, a lower drawing rotary roller and an auxiliary drawing rotary roller, the fixing support plate is horizontally and fixedly arranged on one side of the reciprocating base, the drawing support is vertically, the upper end part and the lower end part of the upper drawing support and the lower end part of the lower drawing support are respectively and horizontally fixedly provided with a yarn inlet support and a yarn outlet support, the yarn inlet support is horizontally and rotatably connected with a yarn inlet rotating roller, the yarn outlet support is horizontally and rotatably connected with a yarn outlet rotating roller, a fixing bearing plate at the lower side of the yarn outlet rotating roller is horizontally provided with a yarn guide through hole, the yarn supporting connecting plate is sequentially and horizontally and fixedly provided with an upper drawing support and a lower drawing support along the drawing support side from top to bottom, the upper drawing support and the lower drawing support are sequentially and horizontally arranged between the yarn inlet rotating roller and the yarn outlet rotating roller from top to bottom, the middle part of the upper drawing support is horizontally and rotatably connected with the upper drawing rotating roller, the upper drawing support is horizontally and slidably arranged on the drawing support along the drawing support, the middle part of the lower drawing support is horizontally and rotatably connected with the lower drawing rotating roller, the lower drawing support is horizontally and rotatably, the auxiliary drafting support is connected with an auxiliary drafting rotating roller along the horizontal rotation of the end part of the yarn supporting connecting plate side, an upper connecting gear is connected to the upper vertical rotating part of the drafting support between the upper drafting support and the auxiliary drafting support, the lower side of the upper drafting support and the upper side of the auxiliary drafting support are respectively and horizontally fixed with an upper drafting rack and an upper connecting rack which are matched with the upper connecting gear, a lower connecting gear is connected to the lower drafting support and the upper side of the auxiliary drafting support in a vertically rotating way, and a lower drafting rack and a lower connecting rack which are matched with the lower connecting gear are respectively and horizontally fixed on the upper side of the lower drafting support and the lower side of the auxiliary drafting support.

Furthermore, a plurality of belt bearing rotating wheels are sequentially and horizontally connected to the reciprocating base on the inner side of the traction belt in a rotating manner along the transmission direction of the traction belt.

Further, the reciprocating base on one side of the push plate wedge block is horizontally provided with an adjusting guide plate, the forward stop lever is vertically and fixedly arranged on the upper side of the adjusting guide plate, two sides of one end of the adjusting guide plate are respectively and horizontally provided with an adjusting guide groove, a locking screw rod is vertically arranged in the adjusting guide groove, the lower side of the locking screw rod is in threaded connection with the reciprocating base, and the upper side of the locking screw rod is in threaded connection with a locking nut.

Furthermore, a backward rotating wheel is horizontally and rotatably connected to the backward blocking rod, and an forward rotating wheel is horizontally and rotatably connected to the forward blocking rod.

Furthermore, the reciprocating guide rod is provided with a retreating stop dog along the side end part of the retreating tension spring, the retreating stop dog is sleeved on the reciprocating guide rod in a sliding mode along the horizontal direction, the retreating stop dog is fixedly provided with an anti-collision rubber ball with a spherical structure along the reciprocating guide plate side, the retreating stop dog is sleeved on the reciprocating guide rod along the reciprocating support side and is provided with an anti-collision spring, and two ends of the anti-collision spring are respectively connected and fixed with the reciprocating support and the retreat.

Compared with the prior art, the invention has the following advantages and effects: the invention has reasonable structural design, the yarn stretching mechanism is vertically and fixedly arranged on the reciprocating base at one side of the reciprocating mechanism, the driving mechanism can drive the drawing belt to continuously reciprocate for rotation and transmission, the drawing belt can drive the reciprocating guide plate of the reciprocating mechanism to unidirectionally transmit in the transmission process, so that the reciprocating guide plate can reciprocate for translation under the synergistic action of the drawing belt and the retreating tension spring, the yarn stretching connecting plate can synchronously reciprocate for translation under the driving of the reciprocating guide plate, the yarn stretching mechanism can rapidly and stably stretch the yarn in the transmission process, the automation degree of yarn stretching processing is improved, the two sides of the drawing belt are respectively wound and connected with the driving rotating shaft and the auxiliary rotating shaft, and the outer surface of the drawing belt is horizontally and fixedly provided with the drawing rack, the main belt pulley at the output end of the traction motor is in transmission connection with the auxiliary belt pulley at one side of the driving rotating shaft, the driving rotating shaft is driven to rotate by the traction motor, so that the traction belt can be driven by the traction motor to continuously rotate and convey, the reciprocating guide plate is arranged on the reciprocating guide rod in a sliding manner along the horizontal direction, the reciprocating guide plate is horizontally connected with a pulling plate gear matched with the traction rack along the side of the traction belt in a rotating manner, the middle part of a gear clamping plate horizontally arranged on the reciprocating guide plate at one side of the pulling plate gear is connected with the reciprocating guide plate in a rotating manner, the gear clamping plate is horizontally and fixedly provided with a clamping rack matched with the pulling plate gear along the circumference of the pulling plate gear, when the gear clamping plate rotates and is connected with the pulling plate gear in a meshing manner by the clamping rack, the pulling plate gear is locked by the clamping rack and can not, the rotation transmission of the traction belt can drive the reciprocating guide plate to perform translational motion, when the gear clamping plate rotates and the clamping rack is disconnected from the plate pulling gear, the plate pulling gear is not limited by external force and is in a free state, so that the rotation transmission of the traction belt can not drive the reciprocating guide plate to perform synchronous translational motion, the rotation transmission of the traction belt is rotatably connected to the reciprocating guide plate through the corner of the rotation adjusting plate, the rotation adjusting plate is horizontally provided with an operating tension spring between the end of the gear clamping plate and the gear clamping plate, the gear clamping plate is fixedly provided with a disconnecting armature along the operating tension spring end, one side of the front magnet support is fixedly provided with a disconnecting electromagnet, a disconnecting tension spring is horizontally connected between the reciprocating guide plate at one side of the disconnecting electromagnet and the gear clamping plate, the rotation adjusting plate at one side of the clamping electromagnet is fixedly provided with the clamping armature, and a, when the rotating adjusting plate rotates anticlockwise under the action of external force, the clamping armature can be adsorbed and fixed after the clamping electromagnet is electrified with magnetic force, the gear clamping plate can be pulled by using the control tension spring in the anticlockwise rotating process of the rotating adjusting plate, the tension of the control tension spring on the gear clamping plate can overcome the tension of the disconnection tension spring on the gear clamping plate, the gear clamping plate can rotate anticlockwise in a same step under the pulling action of the rotating adjusting plate, the clamping rack at the end part of the gear clamping plate is meshed with the pull plate gear to enable the pull plate gear to be locked in a limiting way and stop rotating, when the rotating adjusting plate rotates clockwise under the action of external force, the control tension spring between the rotating adjusting plate and the gear clamping plate loses the tension on the gear clamping plate, the gear clamping plate rotates clockwise under the tension action of the disconnection tension spring, and the clamping rack at the end part of the gear clamping plate is separated from the pull plate gear, the pull plate gear can be in a free state without being limited by external force, a backward extension spring is horizontally connected and arranged between the reciprocating guide plate and the reciprocating base, a push plate wedge block is horizontally and fixedly arranged at the end part at the other end of the rotating adjusting plate, a front push plate inclined plane and a rear push plate inclined plane are symmetrically arranged at two sides of the push plate wedge block, a backward stop lever and a forward stop lever are respectively and vertically arranged on the reciprocating base at two sides of the push plate wedge block, when the reciprocating guide plate is pulled by the backward extension spring to reset and translate, the moving direction of the pull plate gear is opposite to the moving direction of the traction belt, the pull plate gear is in a free state and is always meshed and connected with the traction rack in the translation process to rotate, the front push plate inclined plane of the push plate wedge block is contacted with the backward stop lever, so that the rotating adjusting plate realizes anticlockwise, in the process of forward translation of the reciprocating guide plate, a rear push plate inclined plane of the push plate wedge block touches the forward stop lever, so that the rotating adjusting plate rotates clockwise, the translation motion of the traction rack driven by the traction belt cannot drive the reciprocating guide plate to translate, by utilizing the structure, the traction belt can drive the traction rack to continuously and stably reciprocate to rotate and convey, the forward translation of the reciprocating guide plate is driven by the translation of the traction belt, the backward translation of the reciprocating guide plate is driven by the backward tension spring traction, so that the reciprocating guide plate can drive the yarn supporting connecting plate to continuously reciprocate to translate, an adjusting guide plate is horizontally arranged on a reciprocating base on one side of the push plate wedge block, the forward stop lever is vertically and fixedly arranged on the upper side of the adjusting guide plate, adjusting guide grooves are horizontally arranged on two sides of one end of the adjusting guide plate respectively, locking screw rods are vertically arranged in the adjusting guide grooves, the adjusting guide plate is utilized to drive the forward stop lever to synchronously perform translational motion, so that the contact position of the push plate wedge block and the forward stop lever can be adjusted as required, the reciprocating guide plate can be moved forward and translated to any required position in the process of driving the reciprocating guide plate to translate by the traction belt, the translation position of the yarn supporting connecting plate can be accurately adjusted, the horizontal traction amplitude of yarns can be adjusted according to the type and specification of the textile yarns, the backward rotating wheel is horizontally and rotatably connected to the backward stop lever, the forward rotating wheel is horizontally and rotatably connected to the forward stop lever, the backward rotating wheel and the forward rotating wheel can be stably and smoothly in contact rotation along the front push plate inclined plane and the rear push plate inclined plane in the process of reciprocating translation and contact with the backward stop lever and the forward stop lever, the rotation adjusting plate can be stably and horizontally rotated, the backward tension spring is arranged along the side end of the backward stop lever through the reciprocating guide, the retreat block is fixedly provided with an anti-collision rubber ball with a spherical structure along the side of the reciprocating guide plate, the retreat block is sleeved with an anti-collision spring along the reciprocating guide rod on the side of the reciprocating support, the anti-collision rubber ball and the anti-collision spring are utilized to enable the reciprocating guide plate to buffer and absorb shock when the reciprocating guide plate rapidly retreats and translates under the action of a retreat tension spring, a plurality of tape bearing rotating wheels are sequentially and horizontally connected on a reciprocating base on the inner side of the traction belt along the transmission direction of the traction belt, so that the traction belt can be supported and guided by the tape bearing rotating wheels, the deformation of the traction belt caused when a pull plate gear is meshed and connected with a traction rack of the traction belt is avoided, the pull plate gear cannot be stably meshed and connected with the traction rack to influence the traction belt to drive the reciprocating guide plate to translate, and a yarn feeding support and a yarn discharging support are respectively, the upper yarn feeding support is horizontally and rotatably connected with a yarn feeding rotating roller, the upper yarn discharging support is horizontally and rotatably connected with a yarn discharging rotating roller, yarns can be sequentially conveyed along the yarn feeding rotating roller and the yarn discharging rotating roller, the upper drafting rotating roller is horizontally and rotatably connected with the middle part of the upper drafting support, the lower drafting roller is horizontally and rotatably connected with the middle part of the lower drafting support, the auxiliary drafting roller is horizontally and rotatably connected with the end part of the yarn supporting connecting plate, the upper connecting gear is vertically and rotatably connected to the drafting support between the upper drafting support and the auxiliary drafting support, the lower connecting gear is vertically and rotatably connected to the drafting support between the lower drafting support and the auxiliary drafting support, the yarn supporting connecting plate can drive the upper drafting support and the lower drafting support to synchronously and simultaneously translate in the same direction, the upper drafting support and the lower drafting support can respectively drive the auxiliary drafting support to synchronously and reversely translate by the upper connecting gear and the lower connecting gear in the translation process, the yarn drawing machine has the advantages that the upper drawing rotating roller, the lower drawing rotating roller and the auxiliary drawing rotating roller can be used for synchronously and oppositely translating, so that stable and accurate drawing processing on yarns is realized, in the yarn drawing processing process, the forward translation of the yarn supporting connecting plate is driven by the drawing belt, the yarn supporting connecting plate can overcome the tension of the yarns and perform translation motion efficiently and stably, and the upper drawing rotating roller, the lower drawing rotating roller and the auxiliary drawing rotating roller can obtain enough translation power to draw and process the yarns.

Drawings

Fig. 1 is a schematic top view of a fixed-length drawing device for textile yarns according to the invention.

Fig. 2 is a schematic top view of the reciprocating mechanism of the present invention.

Fig. 3 is a front view structure schematic diagram of the yarn supporting mechanism of the invention.

In the figure: 1. reciprocating base, 2, driving mechanism, 3, reciprocating mechanism, 4, yarn supporting mechanism, 5, drawing motor, 6, driving rotating shaft, 7, auxiliary rotating shaft, 8, drawing belt, 9, drawing rack, 10, auxiliary belt pulley, 11, main belt pulley, 12, transmission belt, 13, reciprocating support, 14, reciprocating guide plate, 15, pull plate gear, 16, backing tension spring, 17, yarn supporting connecting plate, 18, reciprocating guide rod, 19, gear clamping plate, 20, clamping rack, 21, rotation adjusting plate, 22, operation tension spring, 23, push plate wedge block, 24, front push plate inclined plane, 25, rear push plate inclined plane, 26, disconnected armature, 27, front magnet support, 28, disconnected electromagnet, 29, disconnected tension spring, 30, rear magnet support, 31, clamping electromagnet, 32, clamping armature, 33. clamping tension spring 34, backing stop lever 35, advancing stop lever 36, fixing bearing plate 37, drawing support 38, upper drawing roller 39, lower drawing roller 40, auxiliary drawing roller 41, yarn feeding support 42, yarn discharging support 43, yarn feeding roller 44, yarn discharging roller 45, yarn guiding through hole 46, upper drawing support 47, lower drawing support 48, auxiliary drawing support 49, upper connecting gear 50, upper drawing rack 51, upper connecting rack 52, lower connecting gear 53, lower drawing rack 54, lower connecting rack 55, belt bearing roller 56, adjusting guide plate 57, adjusting guide groove 58, locking screw rod 59, locking nut 60, backing roller 61, advancing roller, 62 backing stop 63,

anti-collision rubber ball

63, 64. anticollision spring.

Detailed Description

In order to further describe the invention, a specific embodiment of a fixed-length drawing device for textile yarns is further explained below with reference to the drawings, and the following examples are illustrative of the invention and the invention is not limited to the following examples.

As shown in figure 1, the invention relates to a fixed-distance drawing device for spinning yarns, which comprises a reciprocating base 1, a driving mechanism 2, a reciprocating mechanism 3 and a yarn supporting mechanism 4, wherein the driving mechanism 2 and the reciprocating mechanism 3 are sequentially and fixedly arranged on the upper side of the reciprocating base 1 along the horizontal direction, the yarn supporting mechanism 4 is vertically and fixedly arranged on the reciprocating base 1 on one side of the reciprocating mechanism 3, the driving mechanism 2 comprises a drawing motor 5, a driving rotating shaft 6, an auxiliary rotating shaft 7 and a drawing belt 8, two ends of one side of the reciprocating base 1 are respectively and horizontally and rotatably connected with the driving rotating shaft 6 and the auxiliary rotating shaft 7, the drawing belt 8 is horizontally arranged on the upper side of the reciprocating base 1, two sides of the drawing belt 8 are respectively and spirally connected with the driving rotating shaft 6 and the auxiliary rotating shaft 7, the surface on the outer side of the drawing belt 8 is horizontally and fixedly provided with a drawing rack 9, the traction motor 5 is vertically and fixedly arranged on one side of the reciprocating base 1, the output end of the traction motor 5 is horizontally and coaxially provided with a main belt pulley 11, and the main belt pulley 11 and the auxiliary belt pulley 10 are in transmission connection through a transmission belt 12. As shown in fig. 2, the reciprocating mechanism 3 of the invention comprises a reciprocating bracket 13, a reciprocating guide plate 14, a plate pulling gear 15, a retreating tension spring 16 and a yarn supporting connecting plate 17, wherein the reciprocating bracket 13 is horizontally and fixedly arranged on a reciprocating base 1 at one side of a drawing belt 8, two sides of the reciprocating bracket 13 are respectively and horizontally and fixedly provided with a reciprocating guide rod 18, the reciprocating guide rods 18 are parallel to the conveying direction of the drawing belt 8, the reciprocating guide plate 14 is horizontally arranged at one side of the drawing belt 8, the reciprocating guide plate 14 is arranged on the reciprocating guide rods 18 along the horizontal direction in a sliding manner, the reciprocating guide plate 14 is horizontally and rotatably connected with a plate pulling gear 15 matched with a drawing rack 9 along the side of the drawing belt 8, the plate pulling gear 15 is meshed with the drawing rack 9, the reciprocating guide plate 14 at one side of the plate pulling gear 15 is horizontally provided with a gear clamping plate 19, the middle part of the gear clamping plate 19 is rotatably connected with the reciprocating guide plate 14, the gear clamping, a rotating adjusting plate 21 is horizontally arranged on the reciprocating guide plate 14 at one side of the gear clamping plate 19, the rotating adjusting plate 21 is of an L-shaped structure, the corner of the rotating adjusting plate 21 is rotatably connected to the reciprocating guide plate 14, an operating tension spring 22 is horizontally arranged between the end of the gear clamping plate 19 and the gear clamping plate 19 along the rotating adjusting plate 21, a push plate wedge 23 is horizontally and fixedly arranged at the end of the other end of the rotating adjusting plate 21, a front push plate inclined plane 24 and a rear push plate inclined plane 25 are symmetrically arranged at two sides of the push plate wedge 23, a disconnecting armature 26 is fixedly arranged at the end of the gear clamping plate 19 along the operating tension spring 22, a front magnet support 27 is fixedly arranged on the reciprocating guide plate 14 at one side of the disconnecting armature 26, a disconnecting electromagnet 28 is fixedly arranged at one side of the front magnet support 27, a disconnecting tension spring 29 is horizontally connected between the reciprocating guide plate 14 at one side of the disconnecting electromagnet 28 and the gear clamping, a clamping electromagnet 31 is fixedly arranged on one side of the rear magnet support 30, a clamping armature 32 is fixedly arranged on a rotating adjusting plate 21 on one side of the clamping electromagnet 31, a clamping tension spring 33 is horizontally connected between the rotating adjusting plate 21 on one side of the clamping armature 32 and the reciprocating guide plate 14, a retreating tension spring 16 is horizontally connected between the reciprocating guide plate 14 and the reciprocating base 1, a retreating stop lever 34 and an advancing stop lever 35 are vertically arranged on the reciprocating base 1 on two sides of the push plate wedge block 23 respectively, and a yarn supporting connecting plate 17 is vertically and fixedly arranged above the reciprocating guide plate 14 along the advancing stop lever 35. As shown in fig. 3, the yarn supporting mechanism 3 of the present invention is vertically and fixedly arranged on the reciprocating base 1 at one side of the yarn supporting connecting plate 17, the yarn supporting mechanism 3 comprises a fixing support plate 36, a drawing support 37, an upper drafting roller 38, a lower drafting roller 39 and an auxiliary drafting roller 40, the fixing support plate 36 is horizontally and fixedly arranged at one side of the reciprocating base 1, the drawing support 37 is vertically and fixedly arranged at the upper side of the fixing support plate 36, the drawing support 37 is a C-shaped structure, the upper and lower end parts of the drawing support 37 are respectively and horizontally and fixedly provided with a yarn feeding support 41 and a yarn discharging support 42, the yarn feeding support 41 is horizontally and rotatably connected with a yarn feeding roller 43, the yarn discharging support 42 is horizontally and rotatably connected with a yarn discharging roller 44, the yarn guiding through hole 45 is horizontally arranged on the fixing support plate 36 at the lower side of the yarn discharging roller 44, the yarn supporting connecting plate 17 is sequentially and horizontally and fixedly provided with an upper, an upper drafting bracket 46 and a lower drafting bracket 47 are horizontally arranged between a yarn feeding rotating roller 43 and a yarn discharging rotating roller 44 in sequence from top to bottom, the middle part of the upper drafting bracket 46 is horizontally and rotatably connected with an upper drafting rotating roller 38, the upper drafting bracket 46 is horizontally and smoothly arranged on a drawing bracket 37 along the side of the drawing bracket 37, the middle part of the lower drafting bracket 47 is horizontally and rotatably connected with a lower drafting rotating roller 39, the lower drafting bracket 47 is horizontally and smoothly arranged on the drawing bracket 37 along the side of the drawing bracket 37, an auxiliary drafting bracket 48 is horizontally and slidably arranged on the drawing bracket 37 between the upper drafting bracket 46 and the lower drafting bracket 47, the auxiliary drafting bracket 48 is horizontally and rotatably connected with an auxiliary drafting rotating roller 40 along the end part at the side of a yarn supporting connecting plate 17, an upper connecting gear 49 is vertically and rotatably connected on the drawing bracket 37 between the upper drafting bracket 46 and the auxiliary drafting bracket 48, and an upper drafting rack 50 and an upper connecting gear 49 which are matched with the upper connecting gear 49 are respectively and horizontally and a lower connecting gear 52 is vertically and rotatably connected to the rack 51, the drawing support 37 between the lower drawing support 47 and the auxiliary drawing support 48, and a lower drawing rack 53 and a lower connecting rack 54 which are matched with the lower connecting gear 52 are respectively and horizontally and fixedly arranged on the upper side of the lower drawing support 47 and the lower side of the auxiliary drawing support 48.

According to the invention, the reciprocating base 1 at the inner side of the traction belt 8 is horizontally and rotatably connected with the plurality of belt bearing rotating wheels 55 in turn along the transmission direction of the traction belt 8, so that the traction belt 8 can be supported and guided by the plurality of belt bearing rotating wheels 55, and the phenomenon that the traction belt 8 is deformed when the pulling plate gear 15 is meshed and connected with the traction rack 9 of the traction belt 8, so that the pulling plate gear 15 cannot be stably meshed and connected with the traction rack 9 to influence the traction belt 8 to drive the reciprocating guide plate 14 to perform translational motion is avoided. According to the invention, an adjusting guide plate 56 is horizontally arranged on a reciprocating base 1 at one side of a push plate wedge block 23, an advancing stop lever 35 is vertically and fixedly arranged at the upper side of the adjusting guide plate 56, adjusting guide grooves 57 are respectively and horizontally arranged at two sides of one end of the adjusting guide plate 56, a locking screw rod 58 is vertically arranged in the adjusting guide grooves 57, the lower side of the locking screw rod 58 is in threaded connection with the reciprocating base 1, and a locking nut 59 is in threaded connection with the upper side of the locking screw rod 58, so that the adjusting guide plate 56 can be horizontally adjusted and locked and fixed along the horizontal direction, the adjusting guide plate 56 is utilized to drive the advancing stop lever 35 to synchronously perform translational motion, the contact position of the push plate wedge block 23 and the advancing stop lever 35 can be adjusted as required, the reciprocating guide plate 14 can be moved forwards and horizontally to any required position in the process that a traction, ensure that the horizontal drawing amplitude of the yarn can be adjusted according to the type and specification of the textile yarn. According to the invention, the backward rotating wheel 60 is horizontally and rotatably connected to the backward blocking rod 34, and the forward rotating wheel 61 is horizontally and rotatably connected to the forward blocking rod 35, so that in the process that the push plate wedge block 23 is in reciprocating translation and is contacted with the backward blocking rod 34 and the forward blocking rod 35, the backward rotating wheel 60 and the forward rotating wheel 61 can be in smooth and stable contact rotation along the front push plate inclined surface 24 and the rear push plate inclined surface 25, and the rotation adjusting plate 21 can be in smooth and stable horizontal rotation. The reciprocating guide rod 18 of the invention is provided with a retreating stopper 62 along the side end part of the retreating tension spring 16, the retreating stopper 62 is sleeved on the reciprocating guide rod 18 in a sliding way along the horizontal direction, the retreating stopper 62 is fixedly provided with an anti-collision rubber ball 63 with a spherical structure along the reciprocating guide plate 14 side, the retreating stopper 62 is sleeved on the reciprocating guide rod 18 along the reciprocating bracket 13 side and is provided with an anti-collision spring 64, two ends of the anti-collision spring 64 are respectively connected and fixed with the reciprocating bracket 13 and the retreating stopper 62, and the reciprocating guide plate 14 can buffer and absorb shock when rapidly retreating and translating under the action of the retreating tension spring 16 by utilizing the synergistic.

By adopting the technical scheme, when the fixed-distance drawing device for the textile yarns is used, the driving mechanism 2 and the reciprocating mechanism 3 are sequentially and fixedly arranged on the upper side of the reciprocating base 1 along the horizontal direction, the yarn supporting mechanism 4 is vertically and fixedly arranged on the reciprocating base 1 on one side of the reciprocating mechanism 3, the driving mechanism 2 is utilized to drive the drawing belt 8 to continuously reciprocate for rotating and conveying, the drawing belt 8 can drive the reciprocating guide plate 14 of the reciprocating mechanism 3 to convey in a single direction in the conveying process, so that the reciprocating guide plate 14 can reciprocate for translational motion under the synergistic action of the drawing belt 8 and the retreating tension spring 16, the yarn supporting connecting plate 17 can synchronously reciprocate and translate under the driving of the reciprocating guide plate 14, the yarn supporting mechanism 4 can quickly and stably draw and process the yarns in the conveying process, and the automation degree of yarn drawing and processing is improved, the two sides of a traction belt 8 are respectively wound and connected with a driving rotating shaft 6 and an auxiliary rotating shaft 7, the surface of the outer side of the traction belt 8 is horizontally and fixedly provided with a traction rack 9 in a fitting manner, a main belt pulley 11 at the output end of a traction motor 5 is in transmission connection with an auxiliary belt pulley 10 at one side of the driving rotating shaft 6 by adopting a transmission belt 12, the traction motor 5 is utilized to drive the driving rotating shaft 6 to rotate, so that the traction belt 8 can be driven by the traction motor 5 to continuously rotate and convey, the reciprocating guide plate 14 is arranged on a reciprocating guide rod 18 in a sliding manner along the horizontal direction, the reciprocating guide plate 14 is horizontally and rotatably connected with a pull plate gear 15 matched with the traction rack 9, the middle part of a gear clamping plate 19 horizontally arranged on the reciprocating guide plate 14 at one side of the pull plate gear 15 is rotatably connected with the reciprocating guide plate 14, the gear clamping rack 20 matched with the pull plate gear 15 is horizontally and fixedly, when the gear clamping plate 19 rotates and is meshed and connected with the pulling plate gear 15 by the clamping rack 20, the pulling plate gear 15 is locked by the clamping rack 20 and cannot rotate, the pulling plate gear 15 is meshed and connected with the pulling rack 9, so that the reciprocating guide plate 14 can be driven to perform translational motion by the rotation transmission of the pulling belt 8, when the gear clamping plate 19 rotates and the clamping rack 20 is disconnected with the pulling plate gear 15, the pulling plate gear 15 is not limited by external force and is in a free state, so that the reciprocating guide plate 14 cannot be driven to perform synchronous translational motion by the rotation transmission of the pulling belt 8, the rotation adjusting plate 21 is rotatably connected with the reciprocating guide plate 14 at a corner, the rotation adjusting plate 21 is horizontally provided with an operating tension spring 22 between the end of the gear clamping plate 19 and the gear clamping plate 19, the gear clamping plate 19 is fixedly provided with a disconnecting armature 26 along the operating tension spring 22, one side of the front magnet support 27 is fixedly provided with, a disconnecting tension spring 29 is horizontally connected between the reciprocating guide plate 14 and the gear clamping plate 19 on one side of the disconnecting electromagnet 28, a clamping armature 32 is fixedly arranged on the rotating adjusting plate 21 on one side of the clamping electromagnet 31, a clamping tension spring 33 is horizontally connected between the rotating adjusting plate 21 and the reciprocating guide plate 14 on one side of the clamping armature 32, when the rotating adjusting plate 21 rotates anticlockwise under the action of external force, the clamping armature 32 can be adsorbed and fixed after the clamping electromagnet 31 is electrified with magnetic force, the gear clamping plate 19 can be pulled by using the control tension spring 22 in the anticlockwise rotating process of the rotating adjusting plate 21, the tension force of the control tension spring 22 on the gear clamping plate 19 can overcome the tension force of the disconnecting tension spring 29 on the gear clamping plate 19, so that the gear clamping plate 19 can rotate anticlockwise in a same step under the pulling action of the rotating adjusting plate 21, and the clamping rack 20 at the end part of the gear clamping plate 19 is, the pulling plate gear 15 can be limited and locked to stop rotating, when the rotating adjusting plate 21 rotates clockwise under the action of external force, the operating tension spring 22 between the rotating adjusting plate 21 and the gear clamping plate 19 loses the tension on the gear clamping plate 19, so that the gear clamping plate 19 rotates clockwise under the action of the tension of the disconnecting tension spring 29, the clamping rack 20 at the end part of the gear clamping plate 19 is disconnected from the pulling plate gear 15, the pulling plate gear 15 can be in a free state without being limited by the external force, a retreating tension spring 16 is horizontally connected between the reciprocating guide plate 14 and the reciprocating base 1, a pushing plate wedge block 23 is horizontally and fixedly arranged at the other end part of the rotating adjusting plate 21, a front pushing plate inclined plane 24 and a rear pushing plate inclined plane 25 are symmetrically arranged at two sides of the pushing plate wedge block 23, and a retreating stop rod 34 and an advancing stop rod 35 are respectively and vertically arranged on the reciprocating base, when the reciprocating guide plate 14 is driven by the backward extension spring 16 to perform the returning translation, the movement direction of the pull plate gear 15 is opposite to the movement direction of the traction belt 8, the pull plate gear 15 is in a free state and is always meshed with the traction rack 9 in the translation process to rotate, the front push plate inclined surface 24 of the push plate wedge block 23 contacts with the backward stop lever 34, so that the rotation adjusting plate 21 rotates anticlockwise, the traction belt 8 drives the translation motion of the traction rack 9 to drive the reciprocating guide plate 14 to translate, in the forward translation process of the reciprocating guide plate 14, the rear push plate inclined surface 25 of the push plate wedge block 23 contacts with the forward stop lever 35, so that the rotation adjusting plate 21 rotates clockwise, the translation motion of the traction belt 8 driving the traction rack 9 cannot drive the reciprocating guide plate 14 to translate, and by using the structure, the traction belt 8 can drive the traction rack 9 to continuously and stably perform the reciprocating rotation transmission, the forward translation of the reciprocating guide plate 14 is driven by the translation of the traction belt 8, the backward translation of the reciprocating guide plate 14 is driven by the traction of the backward tension spring 16, so that the reciprocating guide plate 14 can drive the yarn supporting connecting plate 17 to continuously reciprocate for translation, an adjusting guide plate 56 is horizontally arranged on the reciprocating base 1 on one side of the push plate wedge block 23, the forward stop lever 35 is vertically and fixedly arranged on the upper side of the adjusting guide plate 56, adjusting guide grooves 57 are respectively and horizontally arranged on two sides of one end of the adjusting guide plate 56, locking screw rods 58 are vertically arranged in the adjusting guide grooves 57, so that the adjusting guide plate 56 can perform translation adjustment and locking fixation along the horizontal direction, the forward stop lever 35 is driven by the adjusting guide plate 56 to synchronously perform translation, the contact position of the push plate wedge block 23 and the forward stop lever 35 can be adjusted as required, and the reciprocating guide plate 14 can be ensured to move forward to any required position, the translation position of the yarn supporting connecting plate 17 can be accurately adjusted, the horizontal traction amplitude of the yarns can be adjusted according to the type and specification of the textile yarns, a backward rotating wheel 60 is horizontally and rotatably connected to the backward retaining rod 34, a forward rotating wheel 61 is horizontally and rotatably connected to the forward retaining rod 35, so that in the reciprocating translation process of the push plate wedge block 23 and the contact process of the backward retaining rod 34 and the forward retaining rod 35, the backward rotating wheel 60 and the forward rotating wheel 61 can stably and smoothly rotate along the front push plate inclined plane 24 and the rear push plate inclined plane 25 in a contact manner, so that the rotary adjusting plate 21 can stably and smoothly rotate horizontally, a backward stopper 62 is arranged at the end part of the reciprocating guide rod 18 along the backward extension spring 16, an anti-collision rubber ball 63 with a spherical structure is fixedly arranged at the backward stopper 62 along the reciprocating guide plate 14 side, and an anti-collision spring 64 is sleeved on the backward stopper 62, by utilizing the synergistic effect of the anti-collision rubber ball 63 and the anti-collision spring 64, the reciprocating guide plate 14 can buffer and absorb shock when rapidly retreating and translating under the action of the retreating tension spring 16, a plurality of belt bearing rotating wheels 55 are sequentially and horizontally connected on the reciprocating base 1 at the inner side of the traction belt 8 along the transmission direction of the traction belt 8, so that the traction belt 8 can be supported and guided by the plurality of belt bearing rotating wheels 55, the phenomenon that the traction belt 8 is deformed when the pull plate gear 15 is meshed and connected with the traction rack 9 of the traction belt 8, the pull plate gear 15 cannot be stably meshed and connected with the traction rack 9 to influence the traction belt 8 to drive the reciprocating guide plate 14 to perform translational motion is avoided, the yarn feeding support 41 and the yarn discharging support 42 are respectively and horizontally and fixedly arranged at the upper end and the lower end of the traction support 37, the yarn feeding rotating roller 43 is horizontally and rotatably connected on the yarn discharging support 42, the yarn discharging rotating roller 44 is horizontally, the yarn can be sequentially conveyed along the yarn feeding rotating roller 43 and the yarn discharging rotating roller 44, the upper drafting rotating roller 38 is horizontally and rotatably connected to the middle of the upper drafting bracket 46, the lower drafting rotating roller 39 is horizontally and rotatably connected to the middle of the lower drafting bracket 47, the auxiliary drafting bracket 40 is horizontally and rotatably connected to the end part of the auxiliary drafting bracket 48 at the end of the yarn supporting connecting plate 17, the upper connecting gear 49 is vertically and rotatably connected to the drafting bracket 37 between the upper drafting bracket 46 and the auxiliary drafting bracket 48, the lower connecting gear 49 is vertically and rotatably connected to the drafting bracket 37 between the lower drafting bracket 47 and the auxiliary drafting bracket 48, so that in the process of the translational motion of the yarn supporting connecting plate 17, the yarn supporting connecting plate 17 can drive the upper drafting bracket 46 and the lower drafting bracket 47 to synchronously translate in the same direction, the upper drafting bracket 46 and the lower drafting bracket 47 can respectively drive the auxiliary drafting bracket 48 to synchronously and reversely translate by the upper connecting gear 49 and the lower connecting gear 52 in the translational process, the messenger can utilize last draft to change roller 38, lower draft changes roller 39 and assists draft to change roller 40 and move in opposite directions in step and realize carrying out the tractive processing to the yarn is steady accurate, and at the in-process of yarn tractive processing, prop the translation that advances of yarn even board 17 and be driven by tractive belt 8, make prop yarn even board 17 can overcome the tension of yarn and high-efficient steady translation motion that carries on, ensure that last draft changes roller 38, lower draft changes roller 39 and assists draft and changes roller 40 and can obtain sufficient translation power and carry out the tractive processing with the yarn. Through the structure, the yarn drawing machine is reasonable in structural design, can quickly and stably draw and process textile yarns, can adjust the horizontal drawing amplitude according to the types and specifications of the textile yarns, improves the automation degree of yarn drawing and processing, and meets the processing and using requirements.

The above description of the present invention is intended to be illustrative. Various modifications, additions and substitutions for the specific embodiments described may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. A fixed-distance traction device for textile yarns is characterized in that: the fixed-distance traction device for the textile yarns comprises a reciprocating base, a driving mechanism, a reciprocating mechanism and a yarn supporting mechanism, wherein the driving mechanism and the reciprocating mechanism are sequentially and fixedly arranged on the upper side of the reciprocating base along the horizontal direction, the yarn supporting mechanism is vertically and fixedly arranged on the reciprocating base on one side of the reciprocating mechanism, the driving mechanism comprises a traction motor, a driving rotating shaft, an auxiliary rotating shaft and a traction belt, two ends of one side of the reciprocating base are respectively and horizontally and rotatably connected with the driving rotating shaft and the auxiliary rotating shaft, the traction belt is horizontally arranged on the upper side of the reciprocating base, two sides of the traction belt are respectively wound and connected with the driving rotating shaft and the auxiliary rotating shaft, the surface of the outer side of the traction belt is horizontally and fixedly provided with a traction rack, the upper side of the driving rotating shaft is horizontally and fixedly provided with an auxiliary belt pulley, the main belt pulley and the auxiliary belt pulley are connected in a transmission manner through a transmission belt, the reciprocating mechanism comprises a reciprocating support, a reciprocating guide plate, a pulling plate gear, a retreating tension spring and a yarn supporting connecting plate, the reciprocating support is horizontally and fixedly arranged on a reciprocating base on one side of the pulling belt, two sides of the reciprocating support are respectively and horizontally and fixedly provided with a reciprocating guide rod, the reciprocating guide rods are parallel to the transmission direction of the pulling belt, the reciprocating guide plate is horizontally arranged on one side of the pulling belt, the reciprocating guide plate is arranged on the reciprocating guide rod in a sliding manner along the horizontal direction, the reciprocating guide plate is horizontally and rotatably connected with the pulling plate gear matched with the pulling rack along the side of the pulling belt, the pulling plate gear is meshed with the pulling rack, a gear clamping plate is horizontally arranged on the reciprocating guide plate on one side of the pulling plate gear, the middle part of the gear clamping plate is rotatably connected with the reciprocating guide, a rotary adjusting plate is horizontally arranged on the reciprocating guide plate at one side of the gear clamping plate, the rotary adjusting plate is of an L-shaped structure, the corner of the rotary adjusting plate is rotatably connected with the reciprocating guide plate, an operation tension spring is horizontally arranged between the end of the rotary adjusting plate along the gear clamping plate and the gear clamping plate, a push plate wedge block is horizontally and fixedly arranged at the other end of the rotary adjusting plate, a front push plate inclined plane and a rear push plate inclined plane are symmetrically arranged at two sides of the push plate wedge block, the gear clamping plate is fixedly provided with a disconnecting armature along the operation tension spring end, a front magnet support is fixedly arranged on the reciprocating guide plate at one side of the disconnecting armature, a disconnecting electromagnet is fixedly arranged at one side of the front magnet support, a disconnecting tension spring is horizontally connected between the reciprocating guide plate at one side of the disconnecting electromagnet and the, a clamping electromagnet is fixedly arranged on one side of the rear magnet support, a clamping armature is fixedly arranged on a rotating adjusting plate on one side of the clamping electromagnet, a clamping tension spring is horizontally connected between the rotating adjusting plate on one side of the clamping armature and a reciprocating guide plate, a retreating tension spring is horizontally connected between the reciprocating guide plate and a reciprocating base, a retreating stop lever and an advancing stop lever are respectively and vertically arranged on the reciprocating bases on two sides of the push plate wedge block, a yarn supporting connecting plate is vertically and fixedly arranged above the reciprocating guide plate along the advancing stop lever side, a yarn supporting mechanism is vertically and fixedly arranged on the reciprocating base on one side of the yarn supporting connecting plate, the yarn supporting mechanism comprises a fixing support plate, a drawing support, an upper drawing rotary roller, a lower drawing rotary roller and an auxiliary drawing rotary roller, the fixing support plate is horizontally and fixedly arranged on one side of the reciprocating base, the drawing support is vertically, the upper end part and the lower end part of the upper drawing support and the lower end part of the lower drawing support are respectively and horizontally fixedly provided with a yarn inlet support and a yarn outlet support, the yarn inlet support is horizontally and rotatably connected with a yarn inlet rotating roller, the yarn outlet support is horizontally and rotatably connected with a yarn outlet rotating roller, a fixing bearing plate at the lower side of the yarn outlet rotating roller is horizontally provided with a yarn guide through hole, the yarn supporting connecting plate is sequentially and horizontally and fixedly provided with an upper drawing support and a lower drawing support along the drawing support side from top to bottom, the upper drawing support and the lower drawing support are sequentially and horizontally arranged between the yarn inlet rotating roller and the yarn outlet rotating roller from top to bottom, the middle part of the upper drawing support is horizontally and rotatably connected with the upper drawing rotating roller, the upper drawing support is horizontally and slidably arranged on the drawing support along the drawing support, the middle part of the lower drawing support is horizontally and rotatably connected with the lower drawing rotating roller, the lower drawing support is horizontally and rotatably, the auxiliary drafting support is connected with an auxiliary drafting rotating roller along the horizontal rotation of the end part of the yarn supporting connecting plate side, an upper connecting gear is connected to the upper vertical rotating part of the drafting support between the upper drafting support and the auxiliary drafting support, the lower side of the upper drafting support and the upper side of the auxiliary drafting support are respectively and horizontally fixed with an upper drafting rack and an upper connecting rack which are matched with the upper connecting gear, a lower connecting gear is connected to the lower drafting support and the upper side of the auxiliary drafting support in a vertically rotating way, and a lower drafting rack and a lower connecting rack which are matched with the lower connecting gear are respectively and horizontally fixed on the upper side of the lower drafting support and the lower side of the auxiliary drafting support.

2. A constant-length drawing device for textile yarns according to claim 1, characterized in that: and a plurality of belt bearing rotating wheels are sequentially and horizontally connected to the reciprocating base on the inner side of the traction belt in a rotating manner along the transmission direction of the traction belt.

3. A constant-length drawing device for textile yarns according to claim 1, characterized in that: the reciprocating base of push pedal voussoir one side is improved level and is provided with the regulation baffle, and the pin that gos forward is vertical fixed to be set up in adjusting the baffle upside, adjusts baffle one end both sides and is provided with the regulation guide slot horizontally respectively, adjusts the vertical locking lead screw that is provided with in the guide slot, locking lead screw downside threaded connection in reciprocating base, locking lead screw upside threaded connection has lock nut.

4. A constant-length drawing device for textile yarns according to claim 1, characterized in that: the retreating stop lever is horizontally and rotatably connected with a retreating rotating wheel, and the advancing stop lever is horizontally and rotatably connected with an advancing rotating wheel.

5. A constant-length drawing device for textile yarns according to claim 1, characterized in that: the reciprocating guide rod is provided with a retreating stop dog along the end part of the side of the retreating tension spring, the retreating stop dog is sleeved on the reciprocating guide rod in a sliding mode along the horizontal direction, the retreating stop dog is fixedly provided with an anti-collision rubber ball of a spherical structure along the reciprocating guide plate side, the retreating stop dog is sleeved on the reciprocating guide rod along the reciprocating support side and is provided with an anti-collision spring, and two ends of the anti-collision spring are respectively connected and fixed with the reciprocating.