CN110629347A - Shedding mechanism for asymmetric shedding of loom - Google Patents
Shedding mechanism for asymmetric shedding of loom Download PDFInfo
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- CN110629347A CN110629347A CN201910963832.6A CN201910963832A CN110629347A CN 110629347 A CN110629347 A CN 110629347A CN 201910963832 A CN201910963832 A CN 201910963832A CN 110629347 A CN110629347 A CN 110629347A
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- heald
- shedding
- frame
- shedding mechanism
- asymmetric
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C5/00—Cam or other direct-acting shedding mechanisms, i.e. operating heald frames without intervening power-supplying devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
The invention discloses a shedding mechanism for asymmetric shedding of a loom, which comprises: the device comprises a first heald frame, a second heald frame, a cam shedding mechanism, a heald rope and guide wheels, wherein the cam shedding mechanism is connected with the heald rope, and the heald rope is respectively connected with two sides of the bottom of the first heald frame and two sides of the bottom of the second heald frame through the guide wheels. The invention is suitable for high-speed and wide-width weaving, the asymmetric opening increases the time from opening to bunching of warp yarns, under the condition of unchanged air pressure, the speed can be improved by 16 percent, the yield can be improved by more than 15 percent, or the width can be increased by 16 percent; the opening mechanism with the asymmetric opening of the loom is suitable for low-air-pressure weaving, saves energy, reduces weft yarn blow-off, and can reduce the air injection pressure by 0.5kg/cm under the conditions of unchanged width and speed2The low-air-pressure slow weft insertion reduces weft blowing-off and the requirement on the strength of the weft.
Description
Technical Field
The invention relates to the technical field of shedding mechanisms of looms, in particular to a shedding mechanism for asymmetric shedding of a loom.
Background
The mechanism for dividing warp yarns into an upper layer and a lower layer by using the shedding mechanism to form a shed comprises a cam shedding mechanism, a dobby shedding mechanism and a jacquard shedding mechanism, wherein the lifting and descending of a heald frame and the sequence of the heald frame are controlled by using cams, generally 2-8 pages of heald frames are suitable for producing various plain weave, twill, satin, corduroy and other fabrics, the dobby shedding mechanism is used for controlling the lifting sequence of the heald frame by controlling a broach, a drag hook, a lifting rod and the like, and the lifting sequence of the heald frame is controlled by a pattern cylinder, a pattern plate, a nail, a heavy tail rod and the like, for weaving various small pattern fabrics, 16-32 pages of heald frames can be used, and the jacquard shedding mechanism is used for controlling the lifting of the warp yarns by controlling the lifting of the jacquard shedding mechanism through the broach, the vertical hooks, the jacquard threads and the like, wherein each warp yarn can be independently lifted by controlling the lifting sequence of the pattern cylinder.
The existing weaving looms in the weaving industry are all symmetrical and flat in opening, the opening time and the height on two sides are required to be consistent, the warp yarn opening is clear, the opening mechanism with the symmetrical and flat opening allows weft yarns to pass through a weaving opening for a short time, only the weft insertion gravitation is increased when the speed of the loom is increased, weft faults are more, the speed of the loom is limited, the productivity is not improved, the production cost is reduced, and the loom has high noise and large vibration.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a shedding mechanism for asymmetric shedding of a loom.
In order to achieve the purpose, the invention adopts the following technical scheme: a shedding mechanism for asymmetric shedding of a loom, comprising: the device comprises a first heald frame, a second heald frame, a cam shedding mechanism, heald ropes and guide wheels;
the cam shedding mechanism is connected with a heald rope, and the heald rope is respectively connected with two sides of the bottoms of the first heald frame and the second heald frame through guide wheels;
and the openings of the heald frames at the weft insertion side of the first heald frame and the second heald frame are asymmetric with the openings of the heald frames at the weft outlet side of the first heald frame and the second heald frame.
As a further description of the above technical solution:
the first heald frame and the second heald frame are both rectangular frame structures which are connected by an upper cross beam, a lower cross beam, a left side rail and a right side rail and are provided with heald penetrating rods and driving pieces, and the length and the width of the first heald frame and the width of the second heald frame are equal.
As a further description of the above technical solution:
and the first heald frame and the second heald frame are used for opening the warp yarns in layers, and the weft supply yarns are shuttled in the warp yarns to be interwoven into fabrics with different patterns.
As a further description of the above technical solution:
the cam shedding mechanism is used for driving the first heald frame and the second heald frame to lift and descend, and the up-and-down motion law of the first heald frame and the second heald frame depends on the design of the outline linear shape of the cam shedding mechanism.
As a further description of the above technical solution:
and the openings of the weft insertion side heald frames of the first heald frame and the second heald frame are 285 degrees.
As a further description of the above technical solution:
the weft side heald frame shed 315 of the first and second heald frames.
As a further description of the above technical solution:
the tension stable time of the weft insertion side warp yarns of the first heald frame and the second heald frame is 285 degrees, and the tension stable time of the weft outlet side warp yarns of the first heald frame and the second heald frame is 315 degrees, so that the tension of the warp yarns is stable, the clear opening of the warp yarns is ensured, and the weft insertion process and the warp position line process are correct.
As a further description of the above technical solution:
the heald ropes are connected with four heald ropes, and the four heald ropes are used for transmission between the cam shedding mechanism and the first heald frame and between the cam shedding mechanism and the second heald frame.
As a further description of the above technical solution:
one ends of the four heald ropes are respectively connected with the cam shedding mechanism 3, and the other ends of the four heald ropes are respectively connected with two sides of the bottoms of the first heald frame and the second heald frame.
As a further description of the above technical solution:
the guide wheels are four in number and are used for guiding the four heald ropes respectively.
Advantageous effects
The invention provides a shedding mechanism for asymmetric shedding of a loom. The method has the following beneficial effects:
(1): the shedding mechanism for the asymmetric shedding of the loom is suitable for high-speed and wide-width weaving, the asymmetric shedding increases the time from shedding to bunching of warp yarns, the speed can be improved by 16 percent under the condition of unchanged air pressure, the yield can be improved by more than 15 percent, or the width can be increased by 16 percent; the asymmetric opening mechanism of the loom is suitable for low-air-pressure weaving, saves energy, reduces blowing-off of weft yarns, can reduce the air injection pressure by 0.5kg/cm2 under the conditions of unchanged width and speed, slowly inserts the weft yarns under low air pressure, reduces blowing-off of the weft yarns, and reduces the requirement on strength of the weft yarns.
(2): the shedding mechanism for the asymmetric opening of the loom improves the production efficiency, the time of the asymmetric opening technology palm frame from opening to closing is prolonged relative to the time of the symmetric side-hung opening, weft yarn flying is facilitated, sufficient weft yarn flying time is provided, weft yarn faults are reduced, the production efficiency is improved, weaving with smaller opening and small tension can be realized, and broken ends of warp and weft yarns are reduced.
(3): the shedding mechanism with the asymmetric shedding of the loom has the advantages that the vibration of the loom is reduced, the noise is reduced, the palm frames and the back beams of the loom are not in parallel impact motion, the left palm frame, the right palm frame and the back beams have time difference motion to crack the resonance of the impact motion, and the vibration and the noise of the loom are reduced by using low air pressure.
Drawings
Fig. 1 is a schematic view of an opening mechanism for asymmetric opening of a loom according to the present invention.
Illustration of the drawings:
1. a first heald frame; 2. a second heald frame; 3. a cam opening mechanism; 4. a heald rope; 5. and (4) a guide wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, a shedding mechanism for asymmetric shedding of a loom, comprising: a first heald frame 1, a second heald frame 2, a cam shedding mechanism 3, a heald rope 4 and a guide wheel 5;
the cam shedding mechanism 3 is connected with a heald rope 4, and the heald rope 4 is respectively connected with the two sides of the bottoms of the first heald frame 1 and the second heald frame 2 through guide wheels 5;
the weft insertion side heald frame shedding of the first heald frame 1 and the second heald frame 2 is asymmetric with the weft exit side heald frame shedding of the first heald frame 1 and the second heald frame 2.
The first heald frame 1 and the second heald frame 2 are both rectangular frame structures which are connected by an upper cross beam, a lower cross beam, a left side rail and a right side rail and are provided with heald penetrating rods and driving pieces, and the length and the width of the first heald frame 1 are equal to those of the second heald frame 2.
And the first heald frame 1 and the second heald frame 2 are used to open the warp in layers and to allow weft yarns to pass therethrough to be interwoven into fabrics of different patterns.
The cam shedding mechanism 3 is used for driving the first heald frame 1 and the second heald frame 2 to perform lifting operation, and the up-and-down motion law of the first heald frame 1 and the second heald frame 2 depends on the design of the outline linear shape of the cam shedding mechanism 3.
The weft insertion side frame shedding of the first heddle frame 1 and the second heddle frame 2 is 285 °.
The weft-side heddle openings 315 ° of the first heddle frame 1 and the second heddle frame 2.
The tension stable time of the weft insertion side warp of the first heald frame 1 and the second heald frame 2 is 285 degrees, and the tension stable time of the weft outlet side warp of the first heald frame 1 and the second heald frame 2 is 315 degrees, so that the tension of the warp is stable, the clear opening of the warp is ensured, the weft insertion process and the warp position line process are correct.
The heddle ropes 4 are connected with four heddle ropes 4, and the four heddle ropes 4 are used for transmission between the cam shedding mechanism 3 and the first heddle frame 1 and the second heddle frame 2.
One ends of the four heald ropes 4 are connected to the cam shedding mechanisms 3, respectively, and the other ends of the four heald ropes 4 are connected to both sides of the bottoms of the first heald frame 1 and the second heald frame 2, respectively.
The guide wheels 5 are provided with four guide wheels 5, and the four guide wheels 5 are respectively used for guiding the four heald ropes 4.
The shedding mechanism for the asymmetric shedding of the loom is designed and transformed, the heights of the left side and the right side of a heald frame are consistent when the warp of the loom is shed, but shedding time is different, so that the shedding time of the left side and the right side of the loom is inconsistent, the time of opening the weft insertion side to closing the weft outlet side is prolonged, the time of passing through a weaving opening of weft yarns in a warp shedding state is also increased, and the shedding mechanism can be applied to the loom for one-side weft insertion, such as an air jet loom, a water jet loom and the like.
Take the air-jet loom as an example for producing the slashing cotton cloth C21s × C32s, 28 × 22 × 66 "" -gauze varieties:
adopting a symmetrical opening mechanism: the loom speed was 600 revolutions per minute.
Air pressure: the main spray is 2.0kg/cm2, the auxiliary spray is 3.0kg/cm2, and the production efficiency is 95%.
Adopting an opening mechanism with asymmetric openings: the loom speed was increased to 700 rpm.
Air pressure: the main spray is 2.1kg/cm2, the auxiliary spray is 3.0kg/cm2, and the production efficiency is 94%.
The gas consumption and the production efficiency are basically unchanged, and the productivity can be improved.
In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. A shedding mechanism for asymmetric shedding in a loom, comprising: a first heald frame (1), a second heald frame (2), a cam shedding mechanism (3), a heald rope (4) and a guide wheel (5);
the cam shedding mechanism (3) is connected with a heald rope (4), and the heald rope (4) is respectively connected with two sides of the bottoms of the first heald frame (1) and the second heald frame (2) through guide wheels (5);
the openings of the heald frames at the weft insertion side of the first heald frame (1) and the second heald frame (2) are asymmetric with the openings of the heald frames at the weft outlet side of the first heald frame (1) and the second heald frame (2).
2. Shedding mechanism according to claim 1, characterized in that the first (1) and second (2) heald frames are each a rectangular frame structure with a heald rod and a driving member connected by upper and lower beams and left and right side rails, and the first (1) and second (2) heald frames are equal in length and width.
3. Shedding mechanism according to claim 1, characterized in that the first (1) and second (2) heald frames are used to split the warp yarns in layers, in which weft supply yarns are shuttled, for interweaving with fabrics of different patterns.
4. Shedding mechanism for the asymmetric shedding of a loom according to claim 1, characterized in that the cam shedding mechanism (3) is used to drive the first (1) and second (2) heald frames in lifting operation, and the law of the up-and-down motion of the first (1) and second (2) heald frames depends on the design of the linear shape of the outer contour of the cam shedding mechanism (3).
5. Shedding mechanism for the asymmetric shedding of a loom according to claim 1, characterized in that the shedding on the weft insertion side of the first (1) and second (2) heddle frame is 285 °.
6. Shedding mechanism for an asymmetric shedding of a loom according to claim 1, characterized in that the shedding 315 ° on the weft-outlet side of the first (1) and second (2) heddle frame.
7. The shedding mechanism of the asymmetric shedding of the loom, according to claim 1, is characterized in that the stationary time of the warp tension at the weft insertion side of the first heald frame (1) and the second heald frame (2) is 285 degrees, and the stationary time of the warp tension at the weft outlet side of the first heald frame (1) and the second heald frame (2) is 315 degrees, so that the warp tension is stable, the clear shedding of the warp is ensured, the weft insertion process and the warp position process are correct.
8. Shedding mechanism for the asymmetric shedding of a loom according to claim 1, characterized in that four heddle cords (4) are connected in total and that four heddle cords (4) are used for the transmission between the cam shedding mechanism (3) and the first (1) and second (2) heddle frames.
9. Shedding mechanism for the asymmetric shedding of a loom according to claim 1, characterized in that one end of each of the four heddle cords (4) is connected to the cam shedding mechanism 3 and the other end of each of the four heddle cords (4) is connected to both sides of the bottom of the first heddle frame (1) and the second heddle frame (2).
10. Shedding mechanism for the asymmetric shedding of a loom, according to claim 1, characterized in that there are four guide wheels (5) and four guide wheels (5) are used to guide four heddle cords (4) respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2019216449752 | 2019-09-29 | ||
| CN201921644975 | 2019-09-29 |
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| Publication Number | Publication Date |
|---|---|
| CN110629347A true CN110629347A (en) | 2019-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910963832.6A Pending CN110629347A (en) | 2019-09-29 | 2019-10-11 | Shedding mechanism for asymmetric shedding of loom |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6045631A (en) * | 1983-06-27 | 1985-03-12 | エリテツクス，コンツエルン テクステイルニホ ストロジレンストビ | Flat weaving opening apparatus |
| JP2003027348A (en) * | 2001-07-13 | 2003-01-29 | Tsudakoma Corp | Warp opening method for fluid jet loom |
| CN101724956A (en) * | 2009-11-23 | 2010-06-09 | 江苏万工科技集团有限公司 | Shedding method of air jet loom |
| CN103898654A (en) * | 2014-04-19 | 2014-07-02 | 吴江万工机电设备有限公司 | Double-side drive asymmetric connecting rod slide block opening mechanism |
| CN207998669U (en) * | 2018-01-24 | 2018-10-23 | 常州市克劳得布业有限公司 | A kind of passive type cam shedding mechanism |
-
2019
- 2019-10-11 CN CN201910963832.6A patent/CN110629347A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6045631A (en) * | 1983-06-27 | 1985-03-12 | エリテツクス，コンツエルン テクステイルニホ ストロジレンストビ | Flat weaving opening apparatus |
| JP2003027348A (en) * | 2001-07-13 | 2003-01-29 | Tsudakoma Corp | Warp opening method for fluid jet loom |
| CN101724956A (en) * | 2009-11-23 | 2010-06-09 | 江苏万工科技集团有限公司 | Shedding method of air jet loom |
| CN103898654A (en) * | 2014-04-19 | 2014-07-02 | 吴江万工机电设备有限公司 | Double-side drive asymmetric connecting rod slide block opening mechanism |
| CN207998669U (en) * | 2018-01-24 | 2018-10-23 | 常州市克劳得布业有限公司 | A kind of passive type cam shedding mechanism |
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Application publication date: 20191231 |