阅读说明：本技术 一种便于调节的牵伸机构及其环锭纺细纱机 (Drafting mechanism convenient to adjust and ring spinning frame thereof ) 是由 周晔珺 季承 高卫东 许海燕 张弘强 卢雨正 潘如如 王蕾 郭明瑞 于 2021-06-23 设计创作，主要内容包括：本发明公开了一种便于调节的牵伸机构及其环锭纺细纱机,其中,此牵伸机构包括前罗拉对、中间罗拉对和后罗拉对,其中,中间罗拉对,设置于牵伸机构的中部主牵伸区,包括中间上罗拉和中间下罗拉,二者分设于牵伸纱线的两侧；所述中间上罗拉和中间下罗拉的主体结构相同,二者配合转动,其中,所述中间上罗拉包括上牵伸辊组和包覆于所述上牵伸辊组外辊面的上牵伸皮圈,所述中间下罗拉包括下牵伸辊组和包覆于所述下牵伸辊组外辊面的下牵伸皮圈；本发明中的牵伸机构,通过在中部牵伸区的中间罗拉对上设置可进行调节的支撑调节架,来改变相互配合的牵伸皮圈的接触长度,且上、下牵伸皮圈可独立调节,从而能够适配更多种牵伸效果的材料。(The invention discloses a drafting mechanism convenient to adjust and a ring spinning frame thereof, wherein the drafting mechanism comprises a front roller pair, a middle roller pair and a rear roller pair, wherein the middle roller pair is arranged in a middle main drafting area of the drafting mechanism and comprises a middle upper roller and a middle lower roller which are respectively arranged at two sides of a drafting yarn; the main body structures of the middle upper roller and the middle lower roller are the same, and the middle upper roller and the middle lower roller are matched to rotate, wherein the middle upper roller comprises an upper drafting roller set and an upper drafting apron coated on the outer roller surface of the upper drafting roller set, and the middle lower roller comprises a lower drafting roller set and a lower drafting apron coated on the outer roller surface of the lower drafting roller set; according to the drafting mechanism, the adjustable supporting and adjusting frame is arranged on the middle roller pair in the middle drafting zone to change the contact length of the drafting aprons matched with each other, and the upper drafting apron and the lower drafting apron can be independently adjusted, so that more materials with drafting effects can be adapted.)

1. A draft mechanism convenient to adjust which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

the middle roller pair (100) is arranged in a middle main drafting area of the drafting mechanism and comprises a middle upper roller (101) and a middle lower roller (102), and the middle upper roller and the middle lower roller are respectively arranged at two sides of the drafting yarn;

the main body structure of middle top roller (101) and middle bottom roller (102) is the same, and the two cooperation is rotated, wherein, middle top roller (101) including last draft roller set (101a) with wrap in last draft apron (101b) of last draft roller set (101a) outer roll surface, middle bottom roller (101) including bottom draft roller set (102a) and wrap in bottom draft apron (102b) of bottom draft roller set (102a) outer roll surface.

2. The adjustable drafting mechanism as claimed in claim 1, wherein: the upper drafting roller group (101a) comprises a driving drafting roller (101a-1), a driven drafting roller (101a-2), a regulating drafting roller (101a-3) and a supporting regulating frame (101a-4) which is connected with the driving drafting roller (101a-1), the driven drafting roller (101a-2) and the regulating drafting roller (101 a-3).

3. The adjustable drafting mechanism as claimed in claim 2, wherein: the diameters of the driving drafting roller (101a-1), the driven drafting roller (101a-2) and the adjusting drafting roller (101a-3) are reduced in sequence.

4. An adjustable drafting mechanism as claimed in claim 2 or 3, wherein: the supporting and adjusting frame (101d-4) comprises a supporting sleeve (101d-41), a tensioning spring (101d-42), a first supporting rod (101d-43) and a second supporting rod (101 d-44);

one end of the supporting sleeve (101d-41) is rotatably sleeved in the middle of a roll shaft of the driving drafting roll (101a-1), the inner cavity of the supporting sleeve is hollow and is provided with a limiting cavity (M), and the tensioning spring (101d-42) is arranged in the limiting cavity (M);

one end of the first supporting rod (101d-43) extends into the limiting cavity (M) and is in contact with the end part of the tensioning spring (101d-42), the other end of the first supporting rod extends out of the supporting sleeve (101d-41) and is rotatably sleeved in the middle of a roller shaft of the driven drafting roller (101 a-2);

one end of the second support rod (101d-44) is hinged to the outer side wall of the support sleeve (101d-41), and the other end of the second support rod is rotatably sleeved in the middle of the roller shaft of the adjustable drafting roller (101 a-3).

5. The adjustable drafting mechanism as claimed in claim 4, wherein: the outer side wall of the support sleeve (101d-41) is provided with a limiting groove (K), and clamping grooves (K1) are uniformly distributed in the limiting groove (K).

6. The adjustable drafting mechanism as claimed in claim 5, wherein: articulated on the lateral wall of second bracing piece (101d-44) have adjusting support rod (T), adjusting support rod (T)'s free end can cooperate the joint to be in draw-in groove (K1).

7. An adjustable drafting mechanism as claimed in any one of claims 2 to 3, 5 and 6, wherein: the outer side walls of the upper drafting apron (101b) and the lower drafting apron (102b) are contacted and matched to rotate.

8. The adjustable drafting mechanism as claimed in claim 7, wherein: still include front roller pair (200) and back roller pair (300), middle roller pair (100) are located between front roller pair (200) and back roller pair (300), just front roller pair (200) are located and keep away from one side of initiative draft roller (101 a-1).

9. The adjustable drafting mechanism as claimed in claim 8, wherein: front roller pair (200) includes preceding top roller (201) and preceding bottom roller (202), back roller pair (300) are including back top roller (301) and back bottom roller (302), and the roller cooperation is rotated in step in pairs.

10. A ring spinning frame is characterized in that: a drafting system as claimed in any one of claims 1 to 9.

Technical Field

The invention relates to the technical field of ring spinning frames, in particular to a drafting mechanism convenient to adjust and a ring spinning frame thereof.

Background

A ring spinning frame, which realizes twisting and winding by a spindle, a ring and a traveller; consists of feeding, drafting, twisting and winding mechanisms and the like. The roving is fed through a guide bar driven by a traversing device to a drafting mechanism consisting of several pairs of rollers, generally of the double-ring type. The roller gauge and the length of the cradle can be adjusted according to the length of the fiber; the upper leather collar pin is mostly a spring swing pin, the lower leather collar pin is a curved long pin, and the jaw spacing of the upper leather collar pin and the lower leather collar pin is positioned by a spacing block. The spring or the pneumatic cradle is adopted for pressurizing, an additional friction force field is generated for drafting strands, and the fiber movement is effectively controlled.

The drafting mechanism is mainly used for drafting rough yarns, and because the drafting force of different fiber strands is different, the ring spinning frame is also distinguished according to the difference of drafting ranges, the cost of ring spinning is increased to a certain extent, and the traditional drafting mechanism adopts a connecting structure such as a tension rod or a retainer, so that the drafting of apron drafting is difficult to adjust, and the application range of the drafting mechanism is limited. For this purpose, a new drafting mechanism is proposed to improve the existing problems.

Disclosure of Invention

This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.

The invention is provided in view of the problems of the existing drafting mechanism and the ring spinning frame thereof.

Therefore, the technical problem to be solved by the present invention is to provide a drafting mechanism which is easy to adjust, and the purpose of the invention is how to improve the drafting application range of the existing drafting mechanism.

In order to solve the technical problems, the invention provides the following technical scheme: a drafting mechanism convenient for adjustment comprises a front roller pair, a middle roller pair and a rear roller pair, wherein the middle roller pair is arranged in a middle main drafting area of the drafting mechanism and comprises a middle upper roller and a middle lower roller which are respectively arranged at two sides of a drafting yarn; the main body structure of middle top roller and middle bottom roller is the same, and the two cooperation is rotated, wherein, middle top roller include last draft roller set and cladding in the last draft apron of last draft roller set outer roll surface, middle bottom roller include down draft roller set and cladding in the lower draft apron of draft roller set outer roll surface down.

As a preferable aspect of the draft mechanism of the present invention, wherein: the upper drafting roller group comprises a driving drafting roller, a driven drafting roller, a regulating drafting roller and a supporting and regulating frame which is connected with the driving drafting roller, the driven drafting roller and the regulating drafting roller.

As a preferable aspect of the draft mechanism of the present invention, wherein: and the diameters of the driving drafting roller, the driven drafting roller and the adjusting drafting roller are reduced in sequence.

As a preferable aspect of the draft mechanism of the present invention, wherein: the support adjusting frame comprises a support sleeve, a tension spring, a first support rod and a second support rod; one end of the supporting sleeve is rotatably sleeved in the middle of a roll shaft of the driving drafting roll, the inner cavity of the supporting sleeve is hollow and is provided with a limiting cavity, and the tensioning spring is arranged in the limiting cavity; one end of the first supporting rod extends into the limiting cavity and is in contact with the end part of the tensioning spring, and the other end of the first supporting rod extends outside the supporting sleeve and is rotatably sleeved in the middle of a roller shaft of the driven drafting roller; one end of the second supporting rod is hinged to the outer side wall of the supporting sleeve, and the other end of the second supporting rod is rotatably sleeved in the middle of the roller shaft of the adjustable drafting roller.

As a preferable aspect of the draft mechanism of the present invention, wherein: the supporting sleeve is characterized in that a limiting groove is formed in the outer side wall of the supporting sleeve, and clamping grooves are uniformly distributed in the limiting groove.

As a preferable aspect of the draft mechanism of the present invention, wherein: articulated on the lateral wall of second bracing piece have an adjusting support rod, adjusting support rod's free end can cooperate the joint to be in the draw-in groove.

As a preferable aspect of the draft mechanism of the present invention, wherein: the outer side walls of the upper drafting apron and the lower drafting apron are contacted and matched to rotate.

As a preferable aspect of the draft mechanism of the present invention, wherein: still include the front roller pair and the back roller pair, middle roller pair is located the front roller pair is to and the back roller is to between, just the front roller pair is located and keeps away from one side of initiative draft roller.

As a preferable aspect of the draft mechanism of the present invention, wherein: the front roller pair comprises a front upper roller and a front lower roller, the rear roller pair comprises a rear upper roller and a rear lower roller, and the paired rollers are matched to rotate synchronously.

Therefore, another technical problem to be solved by the present invention is to provide a ring spinning frame, which aims to improve the drafting application range of the existing ring spinning frame by installing the above-mentioned novel drafting mechanism.

In order to solve the technical problems, the invention provides the following technical scheme: a ring spinning frame is provided with the conveniently adjusted drafting mechanism.

The invention has the beneficial effects that:

according to the drafting mechanism, the adjustable supporting and adjusting frame is arranged on the middle roller pair in the middle drafting zone to change the contact length of the drafting aprons matched with each other, and the upper drafting apron and the lower drafting apron can be independently adjusted, so that more materials with drafting effects can be adapted.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

fig. 1 is a schematic view of the whole structure of the drafting mechanism convenient for adjustment of the invention.

Fig. 2 is a schematic view of the overall plane structure of the drafting mechanism convenient for adjustment of the invention.

Fig. 3 is a schematic view of the middle top roller structure of the drafting mechanism convenient for adjustment.

Fig. 4 is a schematic view of the supporting and adjusting frame structure of the drafting mechanism convenient for adjustment of the invention.

Fig. 5 is a schematic cross-sectional view of the support adjusting frame of the drafting mechanism convenient for adjustment according to the present invention.

Fig. 6 is a comparison diagram of the width adjustment of the middle top roller of the drafting mechanism convenient for adjustment.

FIG. 7 is a schematic view of the spinning process of the ring spinning frame of the present invention.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Furthermore, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially according to the general scale for convenience of illustration, and the drawings are only exemplary and should not be construed as limiting the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.

Example 1

Referring to fig. 1 and 2, a draft mechanism including a pair of middle rollers 100 is provided for a first embodiment of the present invention to facilitate adjustment.

The middle roller pair 100 is disposed in a middle main drafting zone of the drafting mechanism, that is, between the front roller and the rear roller, and performs a predetermined pressure drafting on the drafting yarn S passing through the drafting mechanism. Specifically, the middle roller 100 includes a middle upper roller 101 and a middle lower roller 102, which are respectively arranged at two sides of the drafting yarn; the draft yarn S is sandwiched and covered between the middle upper roller 101 and the middle lower roller 102, and the middle upper roller 101 and the middle lower roller 102 are relatively rotated in synchronization, so that the draft yarn S is linearly output from between the middle roller pair 100 after being pressure-drafted.

Further, the main body structures of the middle upper roller 101 and the middle lower roller 102 are the same, and the middle upper roller and the middle lower roller rotate in a matching mode; the middle upper roller 101 includes an upper draft roller set 101a and an upper draft apron 101b covering the outer roller surface of the upper draft roller set 101a, and the middle lower roller 101 includes a lower draft roller set 102a and a lower draft apron 102b covering the outer roller surface of the lower draft roller set 102 a. The main body structures of the two rollers are the same, but the main components are not the same, that is, the main components are the same, but the actual structural states of the two rollers are different, for example, the draft pitches of the middle upper roller 101 and the middle lower roller 102 are different. The roller surfaces of the middle upper roller 101 and the middle lower roller 102 are respectively covered with drafting aprons, namely an upper drafting apron 101b and a lower drafting apron 102b, and the outer surfaces of one sides of the two drafting aprons are contacted and can rotate in a matching way.

Example 2

Referring to fig. 1 to 6, a second embodiment of the present invention is different from the first embodiment in that: the draft mechanism includes a front roller pair 200, a middle roller pair 100, and a back roller pair 300.

The middle roller pair 100 includes an upper draft roller group 101a and a lower draft roller group 102a, and the main structures of the two are similar, and the structure of the lower draft roller group 102a will not be described again by taking the structure of the upper draft roller group 101a as an example. Specifically, the upper drafting roller group 101a comprises a driving drafting roller 101a-1, a driven drafting roller 101a-2, a regulating drafting roller 101a-3 and a supporting regulating frame 101a-4 which is connected with the driving drafting roller 101a-1, the driven drafting roller 101a-2 and the regulating drafting roller 101 a-3.

The diameters of the rollers of the driving drafting roller 101a-1, the driven drafting roller 101a-2 and the adjusting drafting roller 101a-3 are reduced in sequence.

The driving drafting roller 101a-1, the driven drafting roller 101a-2 and the adjusting drafting roller 101a-3 are supported and adjusted through a supporting and adjusting frame 101a-4 in the middle, the diameters of the rollers of the three drafting rollers are different, and the rollers are supported through the supporting and adjusting frame 101a-4 and distributed in a triangular shape. The connection side of the driving draft roller 101a-1 and the driven draft roller 101a-2 is a draft side, and the side having the adjusting draft roller 101a-3 is an adjusting side.

The supporting and adjusting frame 101d-4 comprises a supporting sleeve 101d-41, a tensioning spring 101d-42, a first supporting rod 101d-43 and a second supporting rod 101 d-44; one end of a supporting sleeve 101d-41 is rotatably sleeved in the middle of a roll shaft of the driving drafting roll 101a-1, the inner cavity of the supporting sleeve is hollow and is provided with a limiting cavity M, and a tensioning spring 101d-42 is arranged in the limiting cavity M; one end of the first supporting rod 101d-43 extends into the limit cavity M and is contacted with the end part of the tension spring 101d-42, and the other end extends outside the supporting sleeve 101d-41 and is rotatably sleeved in the middle of a roller shaft of the driven drafting roller 101 a-2; one end of the second support rod 101d-44 is hinged on the outer side wall of the support sleeve 101d-41, and the other end is rotatably sleeved in the middle of the roller shaft of the adjustable draft roller 101 a-3.

The outer side wall of the support sleeve 101d-41 is provided with a limiting groove K, and clamping grooves K1 are uniformly distributed in the limiting groove K.

The side wall of the second support rod 101d-44 is hinged with an adjusting support rod T, and the free end of the adjusting support rod T can be matched and clamped in the clamping groove K1.

The supporting and adjusting frame 101d-4 is a connecting part of three drafting rollers, one end of a supporting sleeve 101d-41 is sleeved in the middle of a roller shaft of the driving drafting roller 101a-1, the other end of the supporting sleeve is connected with a first supporting rod 101d-43, specifically, the inner cavity of the supporting sleeve 101d-41 is hollow to form a limiting cavity M, one end of the first supporting rod 101d-43 extends into the limiting cavity M and is contacted with the end part of a tensioning spring 101d-42 arranged in the limiting cavity M, and the other end of the first supporting rod is used for connecting a driven drafting roller 101 a-2; the tension springs 101d-42 are used for adjusting the length of the other ends of the first supporting rods 101d-43 extending out of the supporting sleeves 101d-41 and further used for adjusting the length of the drafting apron on the drafting side. The second support rods 101d-44 are hinged on the side walls of the tube bodies of the support sleeves 101d-31 and are used for connecting the adjustable drafting rollers 101 a-3.

The angle control of the second supporting rod 101d-44 is realized by an adjusting supporting rod T hinged on the side wall of the second supporting rod, and the free end of the adjusting supporting rod T is matched and inserted in a clamping groove K1 in a limiting groove K on the outer side wall of the supporting sleeve 101d-41, so that the angle control device is used for supporting the rod body of the second supporting rod 101d-44 and adjusting the supporting angle of the supporting rod 101 d-44. It should be noted that, the card slot K1 evenly distributed has the multiunit, and the free end of adjusting branch T can the joint in arbitrary card slot K1. It should be noted that the maximum supporting angle of the second supporting rods 101d-44 is 90 degrees, and at this time, the second supporting rods 101d-44 are perpendicular to the side wall of the supporting casing 101 d-41.

Since the drafting apron is covered on the outer roll surface of each drafting roller, the outer side walls of the upper drafting apron 101b and the lower drafting apron 102b need to be contacted and matched to rotate in view of the drafting mode of the drafting yarn S on the ring spinning frame.

Further, in the draft mechanism, it is necessary to include a front roller pair 200 and a rear roller pair 300, and the middle roller pair 100 is located between the front roller pair 200 and the rear roller pair 300, and the front roller pair 200 is located on the side away from the active draft roller 101 a-1.

The front roller pair 200 comprises a front upper roller 201 and a front lower roller 202, and the rear roller pair 300 comprises a rear upper roller 301 and a rear lower roller 302, and the rollers in the pairs are matched to rotate synchronously.

Specifically, in the draft mechanism, generally, the middle top roller 101, the front top roller 201, and the rear top roller 301, which are the upper half portions of the middle roller pair 100, the front roller pair 200, and the rear roller pair 300, are integrally connected to each other by a pressurizing rocker arm, and the middle bottom roller 102, the front bottom roller 202, and the rear bottom roller 302 are connected to a driving device by a pressurizing rocker arm, and the pressurizing rocker arm is connected to the upper side of the driven bottom roller in a matching manner, thereby realizing the entire draft driving.

Before use, the draft force of the draft mechanism is adjusted according to the draft requirement of the draft yarn S. Specifically, during adjustment, (the adjustment change of the middle upper drafting roller 101 is taken as an example for explanation) the free end of the adjusting support rod T is shifted to be clamped in the corresponding clamping groove K1 in the limiting groove K, so that the second support rods 101d-44 are kept supported (or put down). The overall length of the upper drafting apron 101b is kept unchanged, so when the adjustable drafting rollers 101a-3 are supported up (or down) by the second supporting rods 101d-44, the radial triangular shape of the upper drafting roller 101 changes, the height thereof increases, the bottom edge thereof decreases (or the height thereof decreases, the bottom edge thereof increases), that is, the connecting end of the first supporting rod 101d-43 is pressed by the upper drafting apron 101b to contract towards the limiting cavity M, and the tension spring 101d-42 is pressed (or the connecting end of the first supporting rod 101d-43 extends towards the supporting sleeve 101d-41 under the elastic force of the tension spring 101d-42), so as to adjust the drawable length of the middle roller pair 100. Simple structure, convenient regulation and safe use.

Example 3

Referring to fig. 7, a ring spinning frame is provided as a third embodiment of the present invention, and the ring spinning frame is provided with the adjustable drafting mechanism of the above embodiments 1 and 2.

Compared with the embodiment 2, further, the drafting mechanism is arranged and adjusted according to the structure of the above embodiment to adapt to the drafting requirement of the yarn to be drafted. The roving C is wound on a roving roller, the free end of the roving C is led out through a yarn guide rod and led in from a bell mouth at the input end of a drafting mechanism, the roving C is conveyed to a drafting area at the middle part in the drafting mechanism by a rear roller pair 300, the middle roller pair 100 is guided by the drafting of an upper drafting leather collar 101b and a lower drafting leather collar 102b and then output through a front roller pair 200 to be a drafting yarn S with a certain width, the drafting yarn S is contracted in width by a collector in a triangular area, and under the action of a yarn guide D, the spindle, a steel collar and a steel wire ring realize twisting to form spun yarn and wind the spun yarn on a winding roller.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the invention, or those unrelated to enabling the invention).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.