A roving compact spinning buncher

Abstract

The invention discloses a roving compact spinning buncher, comprising a buncher rod and two bunching blocks; the bunching block comprises a body, which is a wedge-shaped block, and comprises an A surface located at one side of the yarn inlet and a D surface located at one side of the yarn outlet, a horizontal surface on the body is the B surface, and a left-right symmetrical surface is the C surface; a yarn path channel is provided on the body, which runs from the A surface to the back surface, and the yarn path channel is a channel formed by a closed space curved surface on the inner surface, and the angle between the axis of the yarn path channel and the C surface is θ, and the angle between the axis of the yarn path channel and the B surface is β, and the yarn channel passes through the body from top to bottom and from left to right and gradually decreases, presenting a shrinking inverted trumpet shape. By arranging this buncher in the front drafting zone of the drafting, the yarn path of the roving conveying can be changed, so that the roving bundling effect is better, the weak twist zone at the front roller outlet is reduced, the roving strength is increased, the roving hairiness is reduced, and the yarn quality is improved.

Description

Technical Field

[0001] The invention relates to a front buncher device of a roving frame drafting mechanism used in a pre-spinning process of a textile machinery, in particular to a front buncher of a four-roller drafting mechanism of a cotton spinning roving frame. Background Art

[0002] The four-roller drafting form is the most common drafting form of cotton spinning roving frames at present. This drafting form adds a front buncher between the first and second rows of rollers to comb and bunch the drafted roving to reduce the hairiness on the roving surface and improve the quality of the roving. Usually, the roving channel of the buncher is set perpendicular to the roller axis, which can basically meet the spinning needs. The cross-section of the roving channel is an inverted trumpet type that gradually decreases from the roving inlet to the outlet, and a groove is opened on the upper part of the channel to facilitate the introduction of roving when the roving is produced. As for how to improve the spinning index by improving the structural form of the existing buncher yarn path channel, it has always been a problem faced by this technical field. Summary of the invention

[0003] In view of the above-mentioned prior art, the present invention proposes a roving compact spinning buncher, which further improves the roving strength and reduces the roving hairiness by changing the structural form of the roving yarn path.

[0004] In order to solve the above technical problems, the present invention proposes a roving compact spinning buncher, including a buncher rod, on which two bunching blocks are provided, and the two bunching blocks are in sliding cooperation with the buncher rod, and support frames are respectively provided at both ends of the buncher rod, and a slot is provided on the support frame, and a stopper is inserted into the slot; the bunching block includes a body, which is a wedge-shaped block, and the body includes an A surface located on the side of the yarn inlet and a D surface located on the side of the yarn outlet, a horizontal plane on the body is the B surface, and the left-right symmetrical plane is the C surface; a yarn path channel is provided on the body from the A surface to the D surface, and the yarn path channel is a channel formed by a closed space curved surface on the inner surface, the angle between the axis of the yarn path channel and the C surface is θ, and the angle between the axis of the yarn path channel and the B surface is β, and the cross-section of the yarn channel gradually decreases along its own axis from the elliptical shape of the A surface of the roving inlet to the circular shape of the D surface of the yarn outlet, and the yarn channel is a shrinking inverted trumpet shape from the A surface of the yarn inlet to the D surface of the yarn outlet.

[0005] In the roving compact spinning buncher of the present invention, the top of the yarn channel is provided with an opening.

[0006] A through hole is provided below the main body, which passes through the left and right sides. The cross section of the cluster rod is a rectangle H, and the cross section of the through hole is a similar shape larger than the rectangle H.

[0007] The axis of the yarn path channel passes through the body from top to bottom and from left to right; β=2-14°, θ=35±5°.

[0008] Preferred are θ=35, β=3° or β=12°.

[0009] Compared with the prior art, the present invention has the following beneficial effects:

[0010] The axis of the yarn path channel in the traditional bundler coincides with the C surface (vertical surface) and the B surface (horizontal surface), and no vertical or horizontal angle is formed, that is, it is perpendicular to the roller axis. The yarn path in the roving drafting zone is a straight line from the four rollers to the front roller and then to the false twister. The support frame of the bundler of the present invention is placed between the first and second rows of rollers. The roving after being drafted in the drafting zone is fed from the yarn inlet end of the A surface of the yarn channel. Since the yarn path channel in the present invention forms a certain angle with the roller axis, the roving guided by the yarn channel of the bundler is obliquely sent to the holding point of the front roller and then enters the spindle wing false twister. Through the bundler of the present invention, the yarn path in the roving drafting zone of the traditional bundler in which the yarn path channel is arranged perpendicular to the roller axis is changed from a straight line from the four rollers to the front roller and then to the false twister to an inflection point 1 added between the first and second rollers, and the inflection point 2 passing through the outlet of the D surface of the bundler is changed to a straight line from the four rollers to the front roller and then to the false twister. Figure 6 As shown, the sheet-like roving (such as Figure 6 The sheet-like roving (shown as W2 in the figure) is more sturdy than the conventional buncher (such as Figure 6 The roving is narrower (as shown in W1 in the figure), and the gathering effect of the inflection point makes the roving bundling effect better, reduces the weak twist area at the front roller outlet, increases the roving strength, reduces the roving hairiness, and thus improves the yarn quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1-1 is a front view of the cluster block in Example 1 of the present invention;

[0012] Figure 1-2 is a top view of the cluster block in Example 1 of the present invention;

[0013] Figure 1-3 is a side view of the cluster block in Example 1 of the present invention;

[0014] Figure 1-4 is a schematic diagram of the three-dimensional structure of the cluster block in Example 1 of the present invention;

[0015] Figure 2-1 is a front view of a cluster block in Embodiment 2 of the present invention;

[0016] Figure 2-2 is a top view of the cluster block in Example 2 of the present invention;

[0017] Figure 2-3 is a side view of the cluster block in Example 2 of the present invention;

[0018] Figure 2-4 Schematic diagram of the three-dimensional structure of the cluster block in Example 2 of the present invention

[0019] Figure 3 is a FF cross-sectional view of the cluster block in the present invention;

[0020] Figure 4 is a schematic diagram of the structure of the bundler in Example 1 of the present invention;

[0021] Figure 5 is a schematic diagram of the structure of the bundler of Example 2 of the present invention;

[0022] Figure 6 It is a schematic diagram of the yarn path channel of a traditional buncher and the buncher of the present invention.

[0023] In the figure: 10-clustering block, 20-stopper, 30-support frame, 40-clustering rod, 1-body, 3-yarn channel, 4-through hole, 5-opening. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the following embodiments are by no means intended to limit the present invention in any way.

[0025] like Figure 4 and Figure 5 As shown, a coarse yarn compact spinning bundler proposed in the present invention includes a bundler rod 40, on which two bundler blocks 10 are provided, and the two bundler blocks 10 are slidably matched with the bundler rod 40. Support frames 30 are respectively provided at both ends of the bundler rod 40, and a slot is provided on the support frame 30, and a stop block 20 is inserted into the slot.

[0026] Embodiment 1:

[0027] like Figure 1-1 , Figure 1-2 , Figure 1-3 and Figure 1-4 As shown, the clustering block 10 in this embodiment includes a main body 1, and the main body 1 is a wedge-shaped block. The main body 1 includes an A surface located on the yarn inlet side and a D surface located on the yarn outlet side. A horizontal plane on the main body 1 is the B surface, and the left-right symmetrical plane is the C surface; the main body 1 is provided with a yarn path channel 3 that runs from the A surface to the back surface 2, and the yarn path channel 3 is a channel formed by a closed space curved surface on the inner surface. The angle between the axis of the yarn path channel 3 and the C surface is θ, and the angle between the axis of the yarn path channel 3 and the B surface is β. The axis of the yarn path channel 3 passes through the main body from top to bottom and from left to right, so that an inflection point 1 can be formed between the first and second rollers, and an inflection point 2 can be formed at the outlet of the D surface of the cluster, β=12°, θ=35°, as shown Figure 1-2 and Figure 1-3As shown, the body 1 of the cluster block 10 of the present invention is provided with a through hole 4 extending left and right, the cross section of the cluster rod 40 is a rectangle H, and the cross section of the through hole 4 is a similar shape larger than the rectangle H, so that the two cluster blocks 10 can move left and right along the cluster rod 40, as shown in FIG. Figure 1-3 and Figure 4 and Figure 2-3 and Figure 5 As shown. The cross section of the yarn channel 3 gradually decreases along its own axis from the elliptical shape of the A surface at the roving inlet to the circular shape of the D surface at the yarn outlet, and the yarn channel 3 is in a narrowed inverted trumpet shape from the A surface at the yarn inlet to the D surface at the yarn outlet. In this embodiment 1, the upper part of the yarn channel 3 is closed, and the roving needs to pass through the yarn channel 3 of the cluster block 10 when the yarn is spun.

[0028] Embodiment 2:

[0029] like Figure 2-1 , Figure 2-2 , Figure 2-3 , Figure 2-4 As shown, the difference between Example 2 and Example 1 is that for the convenience of the operator during operation, an opening 5 is provided at the top of the yarn channel 3, thereby forming an open bundler to facilitate the introduction of coarse yarn by the operator during yarn production. In this Example 2, β=3°, θ=35°.

[0030] The application of the buncher of the present invention in the drafting area of ​​the roving frame is as follows: the support frame 30 of the present invention is placed between the first and second rows of rollers, and the roving after being drafted in the drafting area is fed from the yarn inlet end of the yarn channel 3 according to the large opening of the yarn channel 3 (i.e., the A surface on the yarn inlet side). Since the yarn path channel of the present invention forms a certain angle with the axial direction of the roller, the roving guided by the yarn channel 3 of the buncher is obliquely sent to the holding point of the front roller, and then enters the spindle wing false twister. Through the buncher of the present invention, the transmission The yarn path in the roving drafting zone of the conventional buncher in which the yarn path channel is arranged perpendicularly to the roller axis is changed from a straight line from the fourth roller to the front roller and then to the false twister. An inflection point 1 is added between the first and second rollers, and the inflection point 2 passes through the buncher outlet. This makes the sheet roving from the output end of the second roller to the holding point of the front roller narrower than the sheet roving of the conventional buncher. The gathering effect of the inflection point makes the roving bundling effect better, reduces the weak twist zone at the front roller outlet, increases the roving strength, reduces the roving hairiness, and thus improves the yarn quality.

[0031] Although the present invention has been described above in conjunction with the accompanying drawings, the present invention is not limited to the above-mentioned specific embodiments, which are merely illustrative rather than restrictive. Under the guidance of the present invention, ordinary technicians in this field can make many modifications without departing from the purpose of the present invention, all of which are within the protection of the present invention.

Claims

1. A roving compact spinning buncher, comprising a buncher rod (40), wherein two bunching blocks (10) are provided on the buncher rod (40), and the two bunching blocks (10) are in sliding fit with the buncher rod (40), and support frames (30) are provided at both ends of the buncher rod (40), and a slot is provided on the support frame (30), and a stopper (20) is inserted into the slot; the bunching block (10) comprises a body (1), and the body (1) is a wedge-shaped block, and the body (1) comprises an A surface located on the yarn inlet side and a D surface located on the yarn outlet side, and is characterized in that: A horizontal plane on the body (1) is the B plane, and a left-right symmetrical plane is the C plane; a yarn path channel (3) is provided on the body (1) and passes through from the A plane to the D plane. The yarn path channel (3) is a channel formed by a closed space curved surface on the inner surface. The angle between the axis of the yarn path channel (3) and the C plane is θ, and the angle between the axis of the yarn path channel (3) and the B plane is β. The cross section of the yarn path channel (3) gradually decreases from the elliptical shape of the A plane at the roving inlet to the circular shape of the D plane at the yarn outlet along its own axis. The yarn path channel (3) is in the shape of an inverted trumpet with a narrowed mouth from the A plane at the yarn inlet to the D plane at the yarn outlet; the axis of the yarn path channel (3) passes through the body from top to bottom and from left to right; β = 2-14°, θ = 35±5°; A through hole (4) is provided below the body (1) and passes through the body (1) from left to right. The cross section of the cluster rod (40) is a rectangle H. The cross section of the through hole (4) is a similar shape larger than the rectangle H.

2. The roving compact spinning buncher according to claim 1, characterized in that: The top of the yarn channel (3) is provided with an opening (5).

3. The roving compact spinning buncher according to claim 1, characterized in that: β=3° or 12°.

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