CN107723904B - Warp tension mechanism of stretching thin cloth loom and method thereof - Google Patents
Warp tension mechanism of stretching thin cloth loom and method thereof Download PDFInfo
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- CN107723904B CN107723904B CN201711120157.8A CN201711120157A CN107723904B CN 107723904 B CN107723904 B CN 107723904B CN 201711120157 A CN201711120157 A CN 201711120157A CN 107723904 B CN107723904 B CN 107723904B
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- roller
- gravity
- guide
- guide roller
- warp
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/06—Warp let-off mechanisms
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/12—Controlling warp tension by means other than let-off mechanisms
Abstract
The invention discloses a warp tension mechanism of a stretching thin cloth loom, which comprises a first guide roller, a second guide roller, a guide plate and a gravity roller; the first guide roller and the second guide roller are distributed up and down; the guide plate is obliquely arranged, and the high side of the guide plate is connected with the rolling surface of the second guide roller; the gravity roller can be movably arranged on the guide plate, and warp straddling the gravity roller can draw the gravity roller to roll along the guide plate or roll and clamp the gravity roller between the first guide roller and the second guide roller; the mechanism can automatically keep the uniform tension of warp yarn no matter when weaving or stopping weft yarn withdrawal, and has small difference and good consistency; the structure is simple, the work is reliable, and the service life is long; the gravity roller only rolls, has no friction, does not fuzzing and does not hurt yarn; the amount of tension in the non-winding state of the warp yarn can be changed by adjusting the amount of the angle α within a suitable range.
Description
Technical Field
The invention belongs to the field of weaving machines, and particularly relates to a warp tension mechanism of a stretching and thin cloth weaving machine and a method thereof.
Background
The existing loom (including shuttle loom, rapier loom, air jet loom and water jet loom) cannot be directly used for weaving widening and spreading thin cloth of novel materials such as flat fiber bundles and the like due to different raw materials.
Disclosure of Invention
The invention aims to: in order to overcome the defects in the prior art, the invention provides a warp tension mechanism of a stretching thin cloth loom and a method thereof, which can automatically maintain tension when the loom is in a non-winding state.
The technical scheme is as follows: in order to achieve the above object, the warp tension mechanism of the widening and stretching thin fabric loom of the present invention comprises a first guide roller, a second guide roller, a guide plate and a gravity roller; the first guide roller and the second guide roller are distributed up and down; the guide plate is obliquely arranged, and the high side of the guide plate is connected with the rolling surface of the second guide roller; the gravity roller can be movably arranged on the guide plate, and warp crossing the gravity roller can draw the gravity roller to roll along the guide plate or roll and clamp the gravity roller between the first guide roller and the second guide roller.
Further, the warp feeding device also comprises a warp feeding disc, wherein the warp pulled out by the yarn feeding end of the warp disc sequentially crosses over the second guide roller, passes between the second guide roller and the gravity roller, crosses over the gravity roller, passes between the gravity roller and the first guide roller, crosses over the first guide roller and is pulled out from the yarn outlet end of the first guide roller.
Further, the upper rolling surface of the second guide roller is tangential to the rolling surface of the guide plate.
Further, the gap between the first guide roller and the second guide roller is smaller than the diameter of the gravity roller, or the gap between the first guide roller and the second guide roller is equal to the diameter of the gravity roller.
Further, the guide plate is a movable piece, and an included angle alpha formed by the guide plate and the horizontal plane is adjustable; the friction coefficient between the guide plate and the gravity roller is mu, and the gravity of the gravity roller is G; the included angle alpha satisfies the range of 0< tan alpha <2 mu G.
Further, the device also comprises a stop lever; the stop lever is located above the guide plate, and the vertical distance between the stop lever and the guide plate is smaller than the diameter of the gravity roller.
Further, the method for widening the warp tension mechanism of the thin fabric loom comprises the following steps:
coiling: the warp yarn is continuously pulled out from the yarn outlet end of the first guide roller, and the gravity roller rolls from the guide plate to be clamped between the first guide roller and the second guide roller under the pulling of the warp yarn and rolls along with the first guide roller and the second guide roller;
non-winding state: when the warp yarn is not in a coiling state, the gravity force borne by the gravity roller overcomes the traction force of the warp yarn, the gravity roller is separated from the rolling clamp state and drives the crossed warp yarn to roll downwards to a certain position along the guide plate to reach tension balance, the warp yarn pulled out of the yarn outlet end of the first guide roller 2 automatically returns to a certain distance according to the rolling stroke of the gravity roller, if the gravity roller rolls downwards to be in contact with the stop lever, the phenomenon of excessive withdrawal or broken warp yarn is indicated to happen, and a detection circuit on the stop lever sends out an alarm signal of excessive withdrawal or broken warp yarn.
The beneficial effects are that: the method comprises the following steps:
1. the mechanism can automatically keep the uniform tension of warp yarn no matter when weaving or stopping weft yarn withdrawal, and has small difference and good consistency;
2. the structure is simple, the work is reliable, and the service life is long;
3. the gravity roller only rolls, has no friction, does not fuzzing and does not hurt yarn;
4. the tension of the warp yarn in the non-winding state can be changed by adjusting the angle alpha in a proper range;
5. the shape of the flat fiber bundle is always kept unchanged;
6. the change of the yarn length during the heald frame exchange or the weft withdrawal can be absorbed in time, and the response is sensitive;
7. the warp yarn recovery stroke is long when the weft is withdrawn, and the method is particularly suitable for weaving the stretching thin cloth.
Drawings
FIG. 1 is a schematic diagram of the relative positions of the coiling state of the mechanism;
FIG. 2 is a schematic diagram of the relative positions of the mechanism in the non-winding state;
FIG. 3 is a schematic view showing the relative positions of the winding state of the mechanism with the addition of a third guide roller;
fig. 4 is a schematic view showing the relative positions of the mechanism in the non-winding state after the third guide roller is added.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
As shown in fig. 1 or 2, the warp tension mechanism of the widening and spreading thin cloth loom comprises a first guide roller 2, a second guide roller 4, a guide plate 6 and a gravity roller 3; the first guide roller 2 and the second guide roller 4 are distributed up and down; the guide plate 6 is obliquely arranged; the gravity roller 3 can be movably arranged on the guide plate 6, and warp yarn 1 crossing the gravity roller 3 can pull the gravity roller 3 to roll along the guide plate 6 as shown in figure 2 or to be clamped between the first guide roller 2 and the second guide roller 4 as shown in figure 1; the high side of the guide plate 6 is connected with the rolling surface of the second guide roller 4, and the connection relation of the high side of the guide plate 6 and the rolling surface of the second guide roller 4 enables the gravity roller 3 to smoothly transition from the guide plate 6 to the first guide roller 2 and the second guide roller 4 in combination with the processes from fig. 2 to fig. 1; in this embodiment, the gravity of the gravity roller 3 can be adjusted to adjust the tension of the warp yarn 1.
And the warp feeding disc 7 is further arranged, and the warp 1 pulled out from the yarn feeding end of the warp disc 7 sequentially passes over the second guide roller 4, passes between the second guide roller 4 and the gravity roller 3, passes over the gravity roller 3, passes between the gravity roller 3 and the first guide roller 2, passes over the first guide roller 2 and is pulled out from the yarn outlet end of the first guide roller 2.
The upper rolling surface of the second guide roller 4 is tangential to or slightly higher than the rolling surface of the guide plate 6, and the warp yarn 1 pulled out from the second guide roller 4 in the non-coiling state can be flattened on the upper rolling surface of the guide plate 6, so that the gravity roller 3 stably maintains the tension in the non-coiling state.
The gap between the first guide roller 2 and the second guide roller 4 is smaller than the diameter of the gravity roller 3, so that the gravity roller 3 can be clamped between the first guide roller 2 and the second guide roller 4 in a rolling way; in this embodiment, the gap between the first guide roller 2 and the second guide roller 4 may be equal to the diameter of the gravity roller 3, in this case, when the warp yarn is parallel to the guide plate 6 between the first guide roller and the gravity roller, F (warp yarn tension) =g (roller gravity) =sinα/2, at this time, the gravity roller can keep the warp yarn tension unchanged during the plane rolling of the guide plate 6, so as to improve the stability of the tension process, in order to avoid the dropping of the gravity roller, in this embodiment, as shown in fig. 3, fig. 4, a scheme of adding a third guide roller 8 is further provided, and the third guide roller 8 is disposed on the right side between the first guide roller 2 and the second guide roller 4, so as to prevent the dropping of the gravity roller.
The guide plate 6 is a movable piece with an adjustable inclination angle, the guide plate 6 is a movable piece, and an included angle alpha formed by the guide plate 6 and a horizontal plane is adjustable; wherein the friction coefficient between the guide plate 6 and the gravity roller 3 is mu, and the gravity of the gravity roller 3 is G; satisfy the included angle alpha and satisfy the scope that 0< tan alpha <2 mu G; the tension of the warp yarn 1 can be changed by changing the angle a, and meanwhile, the numerical limitation of alpha ensures that the gravity roller 3 and the guide plate 6 do not slip.
Also comprises a stop lever 5; the stop lever 5 is located above the guide plate 6, the vertical distance between the stop lever 5 and the guide plate 6 is smaller than the diameter of the gravity roller 3, and the stop lever 5 plays a role in controlling the non-coiling state travel.
The following is a description of a method for widening the warp tension mechanism of a spread sheet loom:
coiling: the warp yarn 1 is continuously pulled out from the yarn outlet end of the first guide roller 2, and the gravity roller 3 rolls from the guide plate 6 to be clamped between the first guide roller 2 and the second guide roller 4 under the pulling of the warp yarn 1 and rolls along with the first guide roller 2 and the second guide roller 4;
non-winding state: when the warp yarn is not in a coiling state, the gravity force borne by the gravity roller 3 overcomes the traction force of the warp yarn 1, the gravity roller 3 is separated from a rolling clamp state, the straddled warp yarn 1 is driven to roll downwards to a certain position along the guide plate 6 to reach tension balance, the warp yarn 1 pulled out of the yarn outlet end of the first guide roller 2 automatically returns to a certain distance according to the rolling stroke of the gravity roller 3, if the gravity roller 3 rolls downwards to be in contact with the stop lever 5, the phenomenon of excessive withdrawal or broken warp is indicated to happen, and a detection circuit on the stop lever 5 sends out an alarm signal of excessive withdrawal or broken warp.
The foregoing is only a preferred embodiment of the invention, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present invention, and such modifications and adaptations are intended to be comprehended within the scope of the invention.
Claims (4)
1. Warp tension mechanism of stretching thin cloth loom, its characterized in that: comprises a first guide roller (2), a second guide roller (4), a guide plate (6) and a gravity roller (3); the first guide roller (2) and the second guide roller (4) are distributed up and down; the guide plate (6) is obliquely arranged, and the high side of the guide plate (6) is connected with the rolling surface of the second guide roller (4); the gravity roller (3) is movably arranged on the guide plate (6), and warp yarns (1) crossing the gravity roller (3) can pull the gravity roller (3) to roll along the guide plate (6) or roll and clamp between the first guide roller (2) and the second guide roller (4);
the warp feeding device further comprises a warp feeding disc (7), wherein the warp (1) pulled out from the yarn feeding end of the warp disc (7) sequentially passes through the second guide roller (4), passes between the second guide roller (4) and the gravity roller (3), passes through the gravity roller (3) and the first guide roller (2), passes through the first guide roller (2) and is pulled out from the yarn outlet end of the first guide roller (2);
the upper rolling surface of the second guide roller (4) is tangential to the rolling surface of the guide plate (6);
the gap between the first guide roller (2) and the second guide roller (4) is smaller than the diameter of the gravity roller (3), or the gap between the first guide roller (2) and the second guide roller (4) is equal to the diameter of the gravity roller (3).
2. The warp tension mechanism of a spread sheet loom of claim 1, wherein: the guide plate (6) is a movable piece, and an included angle alpha formed by the guide plate (6) and the horizontal plane is adjustable; wherein the friction coefficient between the guide plate (6) and the gravity roller (3) is mu, and the gravity of the gravity roller (3) is G; the included angle α satisfies the range 0< tan α <2 μ G.
3. The warp tension mechanism of a spread sheet loom as claimed in claim 2, wherein: also comprises a stop lever (5); the stop lever (5) is positioned above the guide plate (6), and the vertical distance between the stop lever (5) and the guide plate (6) is smaller than the diameter of the gravity roller (3).
4. A method of widening the warp tension mechanism of a spread sheet loom as recited in claim 3, wherein:
coiling: the warp yarn (1) is continuously pulled out from the yarn outlet end of the first guide roller (2), and the gravity roller (3) rolls from the guide plate (6) to be clamped between the first guide roller (2) and the second guide roller (4) under the pulling of the warp yarn (1) and rolls along with the first guide roller (2) and the second guide roller (4);
non-winding state: when the warp yarn is not in a coiling state, the gravity force borne by the gravity roller (3) overcomes the traction force of the warp yarn (1), the gravity roller (3) is separated from the rolling clamp state, the straddled warp yarn (1) is driven to roll downwards along the guide plate (6) to a certain position to reach tension balance, the warp yarn (1) pulled out from the yarn outlet end of the first guide roller 2 automatically returns to a certain distance according to the downwards rolling stroke of the gravity roller (3), and if the gravity roller (3) rolls downwards to be in contact with the stop lever (5), the phenomenon of excessive withdrawal or broken warp is indicated, and a detection circuit on the stop lever (5) sends out an alarm signal of excessive withdrawal or broken warp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120157.8A CN107723904B (en) | 2017-11-14 | 2017-11-14 | Warp tension mechanism of stretching thin cloth loom and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711120157.8A CN107723904B (en) | 2017-11-14 | 2017-11-14 | Warp tension mechanism of stretching thin cloth loom and method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107723904A CN107723904A (en) | 2018-02-23 |
| CN107723904B true CN107723904B (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711120157.8A Active CN107723904B (en) | 2017-11-14 | 2017-11-14 | Warp tension mechanism of stretching thin cloth loom and method thereof |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1308546B1 (en) * | 2001-11-01 | 2008-07-09 | Sultex AG | Method for weaving a double layered fabric |
| DE10203068A1 (en) * | 2002-01-26 | 2003-08-07 | Mageba Textilmaschinen Vertrie | Loom with a warp beam |
| CN1217837C (en) * | 2003-03-27 | 2005-09-07 | 祁江汀 | Indigo chaine tubbing process and tubbing device thereof |
| CN201817656U (en) * | 2010-08-14 | 2011-05-04 | 广东丰凯机械股份有限公司 | Let-off mechanism of glass fiber weaving machine |
| CN102517764A (en) * | 2011-12-05 | 2012-06-27 | 西安康本材料有限公司 | Tension device for weaving carbon fibers |
| CN203498586U (en) * | 2013-07-18 | 2014-03-26 | 南京海拓复合材料有限责任公司 | Warp feeding device applicable to weaving of non-bending fabrics |
| CN207659597U (en) * | 2017-11-14 | 2018-07-27 | 无锡市鼎麒新材料科技有限公司 | The warp tension of thin cloth loom is opened up in broadening |
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- 2017-11-14 CN CN201711120157.8A patent/CN107723904B/en active Active
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| CN107723904A (en) | 2018-02-23 |
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