阅读说明：本技术 环锭纺细纱机纤维须条输送机构的下纺纱组件 (Lower spinning assembly of fiber strand conveying mechanism of ring spinning frame ) 是由 徐时平 于 2021-06-19 设计创作，主要内容包括：环锭纺细纱机纤维须条输送机构的下纺纱组件,其包括下支撑件和下纺纱块,下纺纱块可拆卸地连接在下支撑件上,下纺纱块的上弧面支撑纱线或下纺纱块的上弧面与下支撑件共同组成的上弧面支撑纱线。本发明的优点在于：1.通过改变纺纱块弧面而改变间隙和须条通过间隙形成的曲线,从而方便转换下纺纱组件的工作弧面,使纺纱条干指标最优化。2.在纺纱块上设置集合槽,使纱线毛羽指标得到改善。3.在纺纱块上设置分梳槽,使其符合赛罗纺、缆形纺的要求。(The lower spinning assembly of the fiber strand conveying mechanism of the ring spinning frame comprises a lower supporting piece and a lower spinning block, wherein the lower spinning block is detachably connected to the lower supporting piece, and an upper cambered surface of the lower spinning block supports yarns or an upper cambered surface formed by an upper cambered surface of the lower spinning block and a lower supporting piece together supports yarns. The invention has the advantages that: 1. the arc surface of the spinning block is changed to change the gap and the curve formed by the fiber strands passing through the gap, so that the working arc surface of the lower spinning assembly is conveniently converted, and the spinning evenness index is optimized. 2. The yarn spinning block is provided with the gathering groove, so that the yarn hairiness index is improved. 3. The spinning block is provided with a carding groove, so that the spinning block meets the requirements of siro spinning and cable-shaped spinning.)

1. The lower spinning assembly of the fiber strand conveying mechanism of the ring spinning frame is characterized in that: the upper cambered surface of the lower spinning block supports yarns or the upper cambered surface of the lower spinning block and the lower supporting piece jointly form the upper cambered surface supporting yarns.

2. The lower spinning assembly of the fiber sliver conveying mechanism of the ring spinning frame according to claim 1, wherein: the upper cambered surface of the lower spinning block is fixed on a part of the notch of the lower supporting piece.

3. The lower spinning assembly of the fiber sliver conveying mechanism of the ring spinning frame according to claim 1, wherein: the upper cambered surfaces of the lower spinning blocks are different.

4. The lower spinning assembly of the fiber sliver conveying mechanism of the ring spinning frame according to claim 1, wherein: and the front part of the lower spinning block is provided with a gathering groove.

5. The lower spinning assembly of the fiber sliver conveying mechanism of the ring spinning frame according to claim 1, wherein: the front end of the lower spinning block is provided with parallel carding grooves.

6. The lower spinning assembly of the fiber strand conveying mechanism of the ring spinning frame according to claim 5, wherein: and the front end of the lower spinning block is provided with three parallel carding grooves.

7. The lower spinning assembly of the fiber strand conveying mechanism of the ring spinning frame according to claim 5, wherein: two parallel carding grooves are formed in the front end of the lower spinning block.

8. The lower spinning assembly of the fiber sliver conveying mechanism of the ring spinning frame according to claim 1, wherein: the upper cambered surface of the lower spinning block is fixed on all the notches of the lower supporting piece.

Technical Field

The invention relates to a conveying mechanism of a spinning frame sliver, which is generally called a ring spinning frame drafting system, in particular to a lower spinning assembly thereof.

Background

As shown in fig. 1, in the fiber strand conveying mechanism of the ring spinning frame disclosed in chinese patent document CN112760766A, the rear roller rubber roll 35, the middle roller rubber roll 4, and the front roller rubber roll 30 rotate clockwise, the rear roller shaft 32, the middle roller shaft 3, and the front roller shaft 1 rotate counterclockwise, the yarn F is conveyed to the yarn guide 36 and then to the steel collar 38, and is twisted around the spindle tube 37 to form the yarn L, wherein the rear roller shaft 32, the middle roller shaft 3, and the front roller shaft 1 rotate actively, the rear roller rubber roll 35, the middle roller rubber roll 4, and the front roller rubber roll 30 rotate passively, the rotation speed of the middle roller shaft 3 is generally 1.1-3 times that of the rear roller shaft 32, the rotation speed of the front roller shaft 1 is 10-150 times that of the middle roller shaft 3, and the roving is attenuated by drafting. Because the speed ratio of the middle roller rubber roller 4 to the front roller rubber roller 30 is large, the fiber strand is changed rapidly, and therefore, the upper pin cover plate 6, the lower pin 2 and the conveying belt 7 are arranged in the middle to form a stable friction space to control the fiber strand. After being pressed down by the cradle 9, the spring cover 15 is transmitted to the cover plate supporting piece 13 through the upper pin spring 16, the upper pin cover plate 6 is connected with the cover plate supporting piece 13 through the hinge block 17 and the hinge block seat 18, so that the upper pin cover plate 6 obtains a downward pressure, a gap which is stably matched is formed between the arc surface of the upper pin cover plate 6 and the arc surface of the lower pin 2, the strand is always driven by the conveying belt 7 to be conveyed forwards in the gap, and the strand always slides and rubs on the lower pin 2. Thus, the spinning fiber band F is rubbed in the arc surface of the working section of the lower pin 2 at all times. When the mechanism spins different thick and thin yarns and different raw materials, different working section arc surfaces are matched, so that the whole lower pin needs to be replaced, and if the arc surface of the whole lower pin is changed, the spacer block also needs to be replaced, so that the cost is increased and the management is disordered.

The traditional ring spinning frame spins one strand of spun yarn from one strand of roving, the cable type spinning is to divide one strand of fed roving into two or more strands of fiber bundles, each strand of fiber bundle rotates and twists around the axis of the fiber bundle under the action of spinning force, then all the divided fiber bundles with certain twist are converged together, and then the divided fiber bundles are twisted into one strand of yarn around the axis of the yarn. For example, in the polysulfonamide fiber cable type spinning method disclosed in chinese patent document CN101736470A and the cable type spinning device of the ring spinning frame disclosed in chinese patent document CN 101392421A, the fiber strands are carded by the carding roller after passing through the front roller rubber roll, and then twisted into yarns, and the cable type spinning requires a dividing roller and a series of pressurizing devices to be arranged between the front roller rubber roll and the front roller shaft, thereby increasing the parts, the operation difficulty and the cost.

According to the known technology, a collector is arranged between a front roller and a lower pin, so that the yarn quality can be obviously changed, and the hairiness is reduced, for example, a composite pressure bar collector disclosed in chinese patent document CN205398820U, which comprises a pressure bar and two door-shaped collectors, wherein a gauge block is connected to the middle of the pressure bar in a penetrating manner, the door-shaped collector comprises a door beam and forward-extending folding arms connected to both ends of the door beam, folding angles of front ends of the two forward-extending folding arms are opposite, an axial through hole is formed in the door beam, and the aperture of the through hole is slightly larger than the diameter of the pressure bar; the gate-shaped collector is threaded on the pressure bar from the end of the pressure bar and is kept opposite to the gauge block. But it requires a separate addition of an integrator, and the structure of the integrator is also complicated. The entire lower pin also needs to be replaced if by adding an accumulation groove.

Disclosure of Invention

The invention provides a lower spinning assembly of a fiber strand conveying mechanism of a ring spinning frame in order to solve the defects in the prior art, so that the lower spinning assembly can meet the requirements of various kinds of spinning.

The technical scheme adopted for solving the defects in the prior art is as follows:

the lower spinning assembly of the fiber strand conveying mechanism of the ring spinning frame comprises a lower supporting piece and a lower spinning block, wherein the lower spinning block is detachably connected to the lower supporting piece, and an upper cambered surface of the lower spinning block supports yarns or an upper cambered surface formed by an upper cambered surface of the lower spinning block and a lower supporting piece together supports yarns.

Preferably, the upper arc surface of the lower spinning block is fixed on a part of the notch of the lower supporting member.

Preferably, the upper cambered surface of the lower spinning block is changed, and the upper pin cover plate is matched with the cambered surface of the lower spinning component differently through the different cambered surfaces of the spinning blocks so as to adapt to the spinning conditions of different spinning raw materials, different yarn thicknesses and the like, so that various spinning blocks can be conveniently replaced to adapt to various spinning conditions.

Preferably, the front part of the lower spinning block is provided with an aggregation groove, so that the lower spinning block has the function of an aggregation device, and the fiber strands can be aggregated in the aggregation groove of the lower spinning block, thereby simplifying the structure and improving the quality of the yarn.

Preferably, the front end of the lower spinning block is provided with a carding groove, so that the fiber strand can be suitable for different types of spinning.

More specifically, three parallel carding grooves are arranged at the front end of the lower spinning block, so that the fiber strands adapt to cable-type spinning through the lower spinning block and cable-type spinning yarns can be spun.

More specifically, the front end of the lower spinning block is provided with two parallel carding grooves, so that the fiber strands adapt to siro spinning through the lower spinning block, and double-strand yarns with siro spinning effect are spun.

Preferably, the upper arc surface of the lower spinning block is fixed to all notches of the lower support member.

Compared with the prior art, the invention has the advantages that:

1. the arc surface of the spinning block is changed to change the gap and the curve formed by the fiber strands passing through the gap, so that the working arc surface of the lower spinning assembly is conveniently converted, and the spinning evenness index is optimized.

2. The yarn spinning block is provided with the gathering groove, so that the yarn hairiness index is improved.

3. The spinning block is provided with a carding groove, so that the spinning block meets the requirements of siro spinning and cable-shaped spinning.

Drawings

Fig. 1 is a schematic diagram of a roving strand of a fiber strand conveying mechanism of a conventional ring spinning frame after being drafted into a yarn.

FIG. 2 is an exploded view of the lower spinning assembly and the upper pin cover assembly of example 1 of the present invention.

FIG. 3 is an exploded view of a spinning pack in accordance with example 1 of the present invention.

Fig. 4 is a schematic structural view of a spinning block and an upper pin cover plate in embodiment 2 of the present invention.

Fig. 5 is a schematic structural view of a spinning block and an upper pin cover plate of embodiment 3 of the present invention.

FIG. 6 is a schematic structural view of a spinning block of example 4 of the present invention.

FIG. 7 is a schematic view showing the engagement of the spinning block of example 4 of the present invention with the yarn during spinning.

FIG. 8 is a schematic structural view of a spinning block of example 5 of the present invention.

FIG. 9 is a schematic view showing the fitting of the spinning block of example 5 of the present invention to the yarn during spinning.

FIG. 10 is a schematic view of the structure of a spinning block of example 6 of the present invention.

FIG. 11 is a schematic view of the structure of a spinning block of example 7 of the present invention.

FIG. 12 is a schematic view showing the fitting of the spinning block of example 7 of the present invention to the yarn during spinning.

Detailed Description

The invention is further explained by the embodiment in the following with the attached drawings.

As shown in fig. 1 and 2, the fiber strand conveying mechanism of the ring spinning frame comprises a roller pier 31 and a cradle 9 hinged on the roller pier through a cradle holding pipe 33, wherein a rear roller shaft 32, a middle roller shaft 3 and a front roller shaft 1 are sequentially and movably arranged on the roller pier 31 along the wire outlet direction, a rear roller rubber roller 35, a middle roller rubber roller 4 and a front roller rubber roller 30 are sequentially and movably arranged on the cradle 9 along the wire outlet direction, a lower pin 2 is arranged on the roller pier between the middle roller shaft 3 and the front roller shaft 1, the middle part of the upper surface of the lower pin 2 is provided with a cambered surface, an upper pin cover plate assembly is arranged above the lower pin 2, the upper pin cover plate assembly comprises an upper pin cover plate 6 with a cambered surface matched with the cambered surface of the lower pin 52 in a concave-convex manner, an annular conveyer belt 7, a cover plate support 13, a tensioning spring 8 and a tensioning block 5, the annular conveyer belt 7 is sleeved on the outer surface of the upper pin cover plate 6 and the middle roller rubber roller 4 and is tensioned by the tensioning spring 8, the upper pin deck assembly is attached to the cradle 9.

The cambered surface of the upper pin cover plate 6 and the cambered surface of the lower pin 2 can be separated by a spacer block to form a stable fit clearance, the beard strips are conveyed forwards in the clearance all the time, and the beard strips are in sliding friction on the cambered surface of the lower pin 2 all the time.

Example 1

As shown in fig. 2 and 3, the improvement of the present invention is that the lower pin 2 is changed into a lower spinning assembly, the lower spinning assembly comprises a lower pin 52 and a spinning block 57, the spinning block 57 is detachably connected to the lower pin 52, in the embodiment 1, the lower pin 52 is provided with a notch 521 for placing the spinning block 57, the spinning block 57 is provided with a round hole 578, the spinning block 57 is fixed on the product 521 of the lower pin 52 through a screw nut 572, and at the moment, the middle part of the upper surface of the combination of the lower pin 52 and the spinning block 57 is provided with an arc surface which is matched with the upper pin cover plate assembly arranged above.

The lower pin 52 and the spinning block 57 can be engaged in a plurality of variations, and various embodiments are described in detail below.

Example 2

As shown in fig. 4, the arc R4 at the front end of the spinning block 571 is flat, and the arc R4 is close to the entry of the sliver, so that it is suitable for spinning yarn with long average fiber length and has good drafting smoothness index.

Example 3

As shown in fig. 5, the curvature of the R2.6 arc at the front end of spinning block 572 is large, and the R2.6 arc is farther from the strand inlet than spinning block 57A, which is suitable for spinning a yarn with a short average fiber length and a dry spinning strand.

Example 4

As shown in fig. 6 and 7, a gathering groove 5731 is provided at the front end of the spinning block 573, and the front end is provided with a groove 5732, which is suitable for spinning a yarn requiring a gathering device, and the widths of the gathering groove 5731 and the groove 5732 can be changed to be suitable for the requirements of yarns such as a fine yarn, a medium coarse yarn, and the like.

Example 5

As shown in fig. 8 and 9, two combing grooves 5761 are provided at the tip of the spinning block 576 in parallel, and the spun yarn is a double-strand yarn having a siro spinning effect.

Example 6

As shown in fig. 10, 3 carding grooves 5771 are provided side by side at the front end of the spinning block 577, and a cable-shaped spun yarn can be spun.

Example 7

As shown in fig. 11 and 12, a notch 5281 is formed on the original lower pin 2 to form a notched lower pin 528, the spinning block 578 has a complete Y-shaped arc 5781 at the upper part and a buckle 5782 at the lower part, and the buckle 5782 is buckled on the notch 5281 of the lower pin 528, so that the spinning block 578 can be conveniently replaced.