CN105256433A - Novel drafting method for weaving lenos on digital rapier loom and leno heald combined returning device adopted in method - Google Patents

Novel drafting method for weaving lenos on digital rapier loom and leno heald combined returning device adopted in method Download PDF

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Publication number
CN105256433A
CN105256433A CN201510653437.XA CN201510653437A CN105256433A CN 105256433 A CN105256433 A CN 105256433A CN 201510653437 A CN201510653437 A CN 201510653437A CN 105256433 A CN105256433 A CN 105256433A
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China
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doup
base
heald
leno
leno heald
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CN201510653437.XA
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Chinese (zh)
Inventor
方卫东
俞建成
孙锦华
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浙江丝绸科技有限公司
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Priority to CN201510653437.XA priority Critical patent/CN105256433A/en
Publication of CN105256433A publication Critical patent/CN105256433A/en

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Abstract

The invention discloses a novel drafting method for weaving lenos on a digital rapier loom and a combined leno heald returning device adopted in the method. An upper leno heald returning device and a lower leno heald returning device are combined into the combined leno heald returning device, by means of experimental optimization, leno weaving can be carried out on the digital rapier loom more conveniently and faster, the problem of weaving difficulty caused by unclear opening of a twisting and turning shed or insufficient opening height is reduced, and the production efficiency is effectively improved, which is beneficial for application and popularization.

Description

The leno heald combination return device that a kind of digital Rapier looms adopts in the novel Drafting Method of weaving LENO AND GAUZE and the method

[technical field]

The present invention relates to the technical field of textile technology, the technical field of the leno heald combination return device particularly a kind of digital Rapier looms adopted in the novel Drafting Method of weaving LENO AND GAUZE and the method.

[background technology]

Rapier looms is the shuttleless loom be most widely used at present, it is except having shuttleless loom high speed, high automation degree, efficient fertile feature, its positive filling insertion way has very strong varietal adaptation, the wefting insertion of all kinds of yarn can be adapted to, in addition Rapier looms also has obvious advantage in polychrome latitude is weaved, and can produce the Yarn-dyed fabric of nearly 16 barry dyeing yarns.Along with shuttleless loom replaces fly-shuttle loom, Rapier looms will become the main production machine of woven fabric.Flat comprehensive weaving mostly can only be carried out during existing digital Rapier looms weaving fabric, then be faced with when needs leno heald carries out leno weaving that strand turns that shed open opens difficulty, strand turn shed opening not, leak strand leakage and knit the difficulties such as phenomenon is many, have a strong impact on loom production efficiency and product quality.

[summary of the invention]

Object of the present invention solves the problems of the prior art exactly, the leno heald combination return device adopted in the novel Drafting Method of weaving LENO AND GAUZE on a kind of digital Rapier looms and the method is proposed, digital Rapier looms can being made more convenient when carrying out leno weaving, reducing the reason of leno heald weaving and affecting production efficiency and product quality problem.

For achieving the above object, the present invention proposes the leno heald combination return device adopted in the novel Drafting Method of weaving LENO AND GAUZE on a kind of digital Rapier looms and the method, on described digital Rapier looms, the novel Drafting Method of weaving LENO AND GAUZE comprises the steps:

Step one: adjustment of tonicity governor assembly, makes leno heald combination return device reach back comprehensive speed synchronous with the digital Rapier looms speed of a motor vehicle;

Step 2: by doup end from the front base of a rear secondary leno heald combine and rear base combine between pass, the doup wire hole that doup end enters adjacent last secondary leno heald passes;

Step 3: by ground through from after the doup wire hole of a secondary leno heald pass, ground through enter base before adjacent last secondary leno heald and combine and after base combine between pass;

Step 4: the front base of last secondary leno heald combines and doup promotes simultaneously, the front base of a rear secondary leno heald combines and doup makes corresponding sports simultaneously, forms strand and turns shed open; The rear base of last secondary leno heald combines and doup promotes simultaneously, and the rear base of a rear secondary leno heald combines and doup makes corresponding sports simultaneously, forms open shed; Last secondary leno heald is motionless, and a rear secondary leno heald promotes, and forms plain shed;

Step 5: before machine, doup end penetrate on the right side of ground warp the doup wire hole of last secondary leno heald and first of warp be warp, second is doup end, result be last secondary leno heald front base combine and doup promote doup end is walked around through below, forward left side to from the right side strand of ground warp, such Drafting Method wears method on the combination leno heald right side; If doup end penetrates the doup wire hole of last secondary leno heald in the left side of ground warp and first of warp is doup end, second is ground warp, result be last secondary leno heald front base combine and doup promote doup end is walked around through below, forward right side to from the left side strand of ground warp, such Drafting Method wears method on a combination leno heald left side.

As preferably, described leno heald combination return device comprises return device and lower return device, described upper return device comprises support, tension regulator assembly, pulling force regulating spring, heald frame, carinula bar nylon synchronized links part, carinula bar, carinula bar positioning sliding block, leno heald, described support fixes on the ground, support is fixed with some groups of tension regulator assemblies, pulling force regulating spring is connected with under described tension regulator assembly, described pulling force regulating spring lower end is connected with carinula bar nylon synchronized links part, described carinula bar nylon synchronized links part is all connected with two pulling force regulating springs, some carinula bars are connected with below described carinula bar nylon synchronized links part, the two ends of described carinula bar are provided with carinula bar positioning sliding block, the quantity of described heald frame has some, between described heald frame, leno heald is installed, described leno heald comprises front base and combines, rear base is combined and a slice doup, the shape combined with rear base combined by described front base is S shape, front base is combined and rear base is combined in left and right corresponding relation, the two ends of combining with rear base combined by described front base respectively a heald frame perforation, the side, middle part of combining with rear base combined by described front base has a doup to wear groove, the shape of described doup is half arc, respectively there is a carinula bar perforation at the two ends of described doup, there is a wire hole at the middle part of described doup, the two ends of described doup are each passed through front base and combine the doup combined with rear base and wear groove, described lower return device comprises pedestal, tension regulator assembly, pulling force regulating spring, heald frame, carinula bar nylon synchronized links part, carinula bar, carinula bar positioning sliding block, leno heald, described tension regulator assembly is fixed on pedestal, the quantity of tension regulator assembly has some, described tension regulator assembly is connected with pulling force regulating spring, described pulling force regulating spring upper end is connected with carinula bar nylon synchronized links part, described carinula bar nylon synchronized links part is all connected with two pulling force regulating springs, some carinula bars are connected with above described carinula bar nylon synchronized links part, the two ends of described carinula bar are provided with carinula bar positioning sliding block, the quantity of described heald frame has some, between described heald frame, leno heald is installed, described leno heald comprises front base and combines, rear base is combined and a slice doup, the shape combined with rear base combined by described front base is S shape, front base is combined and rear base is combined in left and right corresponding relation, the two ends of combining with rear base combined by described front base respectively a heald frame perforation, the side, middle part of combining with rear base combined by described front base has a doup to wear groove, the shape of described doup is half arc, respectively there is a carinula bar perforation at the two ends of described doup, there is a wire hole at the middle part of described doup, the two ends of described doup are each passed through front base and combine the doup combined with rear base and wear groove.

As preferably, described tension regulator assembly comprises retract bolt, flexible rotating screw bolt and steel turn-buckle hook, described flexible rotating screw bolt one end is fixed on cradle top, and described flexible rotating screw bolt one end is connected with retract bolt, and the other end of described retract bolt is connected with steel turn-buckle hook.

As preferably, described upper return device and lower return device misplace correspondence up and down, and the leno heald of described upper return device and the leno heald of adjacent lower return device form one group of complete leno heald group, and the every pair of described leno heald joins two panels heald frame, often organize leno heald assembly four heald frames.

As preferably, the quantity of described leno heald has some pairs, the every pair of described leno heald is all furnished with two carinula bars, described two carinula bars are bored a hole horizontal through the carinula bar at doup two ends on same straight line, article two, carinula bar is positioned in same level, and described carinula bar positioning sliding block and carinula bar are detachable connection.

Beneficial effect of the present invention: the present invention is by forming leno heald combination return device by upper return device and the combination of lower return device, through optimum experimental, digital Rapier looms can be made more convenient when carrying out leno weaving, reduce or solve turn that shed open opens that unclear or open height causes not because of strand weave difficult technical barrier, effectively enhance productivity, be beneficial to and apply.

Feature of the present invention and advantage will be described in detail by reference to the accompanying drawings by embodiment.

[accompanying drawing explanation]

Fig. 1 is that method schematic diagram is worn on the combination leno heald right side of the novel Drafting Method of weaving LENO AND GAUZE on a kind of digital Rapier looms of the present invention;

Fig. 2 is the top view of the leno heald combination return device of a kind of digital Rapier looms of the present invention;

Fig. 3 is the front view of the leno heald combination return device of a kind of digital Rapier looms of the present invention;

Fig. 4 is that method schematic diagram is worn on a combination leno heald left side for the novel Drafting Method of weaving LENO AND GAUZE on a kind of digital Rapier looms of the present invention.

In figure: after under the upper return device of 1-, 2-, before return device, 3-support, 4-tension regulator assembly, 5-pulling force regulating spring, 6-heald frame, 7-carinula bar nylon synchronized links part, 8-carinula bar, 9-carinula bar positioning sliding block, 10-leno heald, 11-, base is combined, the perforation of 12-doup, 13-heald frame, 14-doup wear groove, the perforation of 15-carinula bar, 16-wire hole, 17-pedestal, 18-retract bolt, 19-stretch rotating screw bolt, 20-steel turn-buckle hook, 21-, base is comprehensive.

[detailed description of the invention]

Consult Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the leno heald combination return device that a kind of digital Rapier looms of the present invention adopts in the novel Drafting Method of weaving LENO AND GAUZE and the method, on described digital Rapier looms, the novel Drafting Method of weaving LENO AND GAUZE comprises the steps:

Step one: adjustment of tonicity governor assembly 4, makes leno heald combination return device reach back comprehensive speed synchronous with the digital Rapier looms speed of a motor vehicle;

Step 2: doup end combined between 11 and rear base comprehensive 21 from the front base of a rear secondary leno heald 10 and pass, doup 12 wire hole 16 that doup end enters adjacent last secondary leno heald 10 passes;

Step 3: by ground through from after doup 12 wire hole 16 of a secondary leno heald 10 pass, ground through enter base before adjacent last secondary leno heald 10 combine 11 and after base combine 21 between pass;

Step 4: the front base comprehensive 11 of last secondary leno heald 10 and doup 12 promote simultaneously, the front base comprehensive 11 of a rear secondary leno heald 10 and doup 12 make corresponding sports simultaneously, form strand and turn shed open; The rear base comprehensive 21 of last secondary leno heald 10 and doup 12 promote simultaneously, and the rear base comprehensive 21 of a rear secondary leno heald 10 and doup 12 make corresponding sports simultaneously, form open shed; Last secondary leno heald 10 is motionless, and a rear secondary leno heald 10 promotes, and forms plain shed;

Step 5: before machine, doup 12 wire hole 16 that is first of warp that doup end penetrates last secondary leno heald 10 on the right side of ground warp be warp, second is doup end, result be last secondary leno heald 10 front base combine 11 and doup 12 promote doup end is walked around through below, forward left side to from the right side strand of ground warp, such Drafting Method wears method on the combination leno heald right side; If doup end penetrates doup 12 wire hole 16 that is first of warp of last secondary leno heald 10 for doup end in the left side of ground warp, second is ground warp, result be last secondary leno heald 10 front base combine 11 and doup 12 promote doup end is walked around through below, forward right side to from the left side strand of ground warp, such Drafting Method wears method on a combination leno heald left side;

Described leno heald combination return device comprises return device 1 and lower return device 2, described upper return device 1 comprises support 3, tension regulator assembly 4, pulling force regulating spring 5, heald frame 6, carinula bar nylon synchronized links part 7, carinula bar 8, carinula bar positioning sliding block 9, leno heald 10, described support 3 fixes on the ground, support 3 is fixed with some groups of tension regulator assemblies 4, described tension regulator assembly is connected with pulling force regulating spring 54 times, described pulling force regulating spring 5 lower end is connected with carinula bar nylon synchronized links part 7, described carinula bar nylon synchronized links part 7 is all connected with two pulling force regulating springs 5, some carinula bars 8 are connected with below described carinula bar nylon synchronized links part 7, the two ends of described carinula bar 8 are provided with carinula bar positioning sliding block 9, the quantity of described heald frame 6 has some, between described heald frame 6, leno heald 10 is installed, described leno heald 10 comprises front base and combines 11, rear base combines 21 and a slice doup 12, described front base combine 11 and the rear base shape of combining 21 be S shape, front base comprehensive 11 and rear base combine 21 in left and right corresponding relation, described front base combine 11 and the rear base two ends of combining 21 respectively have a heald frame perforation 13, described front base combine 11 and the rear base side, middle part of combining 21 have a doup to wear groove 14, the shape of described doup 12 is half arc, respectively there is a carinula bar perforation 15 at the two ends of described doup 12, there is a wire hole 16 at the middle part of described doup 12, the two ends of described doup 12 be each passed through front base combine 11 and the rear base doup of combining 21 wear groove 14, described lower return device 2 comprises pedestal 17, tension regulator assembly 4, pulling force regulating spring 5, heald frame 6, carinula bar nylon synchronized links part 7, carinula bar 8, carinula bar positioning sliding block 9, leno heald 10, described tension regulator assembly 4 is fixed on pedestal 17, the quantity of tension regulator assembly 4 has some, described tension regulator assembly 4 is connected with pulling force regulating spring 5, described pulling force regulating spring 5 upper end is connected with carinula bar nylon synchronized links part 7, described carinula bar nylon synchronized links part 7 is all connected with two pulling force regulating springs 5, some carinula bars 8 are connected with above described carinula bar nylon synchronized links part 7, the two ends of described carinula bar 8 are provided with carinula bar positioning sliding block 9, the quantity of described heald frame 6 has some, between described heald frame 6, leno heald 10 is installed, described leno heald 10 comprises front base and combines 11, rear base combines 21 and a slice doup 12, described front base combine 11 and the rear base shape of combining 21 be S shape, front base comprehensive 11 and rear base combine 21 in left and right corresponding relation, described front base combine 11 and the rear base two ends of combining 21 respectively have a heald frame perforation 13, described front base combine 11 and the rear base side, middle part of combining 21 have a doup to wear groove 14, the shape of described doup 12 is half arc, respectively there is a carinula bar perforation 15 at the two ends of described doup 12, there is a wire hole 16 at the middle part of described doup 12, the two ends of described doup 12 be each passed through front base combine 11 and the rear base doup of combining 21 wear groove 14, described tension regulator assembly 4 comprises retract bolt 18, flexible rotating screw bolt 19 and steel turn-buckle hook 20, described flexible rotating screw bolt 19 one end is fixed on support 3 top, described flexible rotating screw bolt 19 one end is connected with retract bolt 18, the other end of described retract bolt 18 is connected with steel turn-buckle hook 20, described upper return device 1 and lower return device about 2 misplace correspondence, the leno heald 10 of described upper return device 1 and the leno heald 10 of adjacent lower return device 2 form one group of complete leno heald 10 groups, the every pair of described leno heald 10 joins two panels heald frame 6, often organize leno heald 10 assembly four heald frames 6, the quantity of described leno heald 10 has some pairs, the every pair of described leno heald 10 is all furnished with two carinula bars 8, described two carinula bars 8 are horizontal through the carinula bar perforation 15 at doup 12 two ends on same straight line, described two carinula bars 8 are positioned in same level, described carinula bar positioning sliding block 9 and carinula bar 8 are detachable connection.

The course of work of the present invention:

The leno heald combination return device that a kind of digital Rapier looms of the present invention adopts in the novel Drafting Method of weaving LENO AND GAUZE and the method in the course of the work, adjustment tension regulator assembly 4, the tensile elongation of regulating spring and stressed degree can be come according to loom speed of a motor vehicle height, fabric thickness, thus reach back the synchronous of comprehensive speed, doup end is combined between 11 and rear base comprehensive 21 from the front base of a rear secondary leno heald 10 and is passed, and doup 12 wire hole 16 that doup end enters adjacent last secondary leno heald 10 passes; Ground through from after doup 12 wire hole 16 of a secondary leno heald 10 pass, ground through enter base before adjacent last secondary leno heald 10 combine 11 and after pass between base comprehensive 21.The front base of described last secondary leno heald 10 combine 11 and doup 12 promotes simultaneously, the front base of a rear secondary leno heald 10 combine 11 and doup 12 make corresponding sports simultaneously, form strand and turn shed open; The rear base comprehensive 21 of described last secondary leno heald 10 and doup 12 promote simultaneously, and the rear base comprehensive 21 of a rear secondary leno heald 10 and doup 12 make corresponding sports simultaneously, form open shed; Described last secondary leno heald 10 is motionless, and a rear secondary leno heald 10 promotes, and forms plain shed.The front base of described last secondary leno heald 10 combine 11 and doup 12 promote simultaneously doup end is walked around through below, opposite side is forwarded to from the side strand of ground warp, before strand to turn in journey the adjacent leno heald 10 of rear side base combine 11 and doup 12 move simultaneously, common formation is effectively twisted and is turned shed open, makes rapier loom head take parallel and turns the quick weaving of shed open by strand.The present invention can make digital Rapier looms more convenient when carrying out leno weaving, reduce turn that shed open opens that unclear or open height causes not because of strand weave difficult problem, effectively enhance productivity, be beneficial to and apply.

Above-described embodiment is to explanation of the present invention, is not limitation of the invention, anyly all belongs to protection scope of the present invention to the scheme after simple transformation of the present invention.

Claims (5)

1. the leno heald combination return device digital Rapier looms adopted in the novel Drafting Method of weaving LENO AND GAUZE and the method, it is characterized in that, on described digital Rapier looms, the novel Drafting Method of weaving LENO AND GAUZE comprises the steps:
Step one: adjustment of tonicity governor assembly (4), makes leno heald combination return device reach back comprehensive speed synchronous with the digital Rapier looms speed of a motor vehicle;
Step 2: doup end combined between (11) and rear base comprehensive (21) from the front base of a rear secondary leno heald (10) and pass, doup (12) wire hole (16) that doup end enters adjacent last secondary leno heald (10) passes;
Step 3: by ground through from after doup (12) wire hole (16) of a secondary leno heald (10) pass, the front base of ground through entering adjacent last secondary leno heald (10) combine (11) and after pass between base comprehensive (21);
Step 4: the front base of last secondary leno heald (10) combines (11) and doup (12) promotes simultaneously, the front base of a rear secondary leno heald (10) combines (11) and doup (12) makes corresponding sports simultaneously, forms strand and turns shed open; The rear base of last secondary leno heald (10) combines (21) and doup (12) promotes simultaneously, the rear base of a rear secondary leno heald (10) combines (21) and doup (12) makes corresponding sports simultaneously, forms open shed; Last secondary leno heald (10) is motionless, and a rear secondary leno heald (10) promotes, and forms plain shed;
Step 5: before machine, doup end penetrates doup (12) wire hole (16) namely first of warp of last secondary leno heald (10) for ground warp on the right side of ground warp, second is doup end, result be last secondary leno heald (10) front base combine (11) and doup (12) lifting doup end is walked around through below, forward left side to from the right side strand of ground warp, such Drafting Method wears method on the combination leno heald right side; If doup end penetrates doup (12) wire hole (16) namely first of warp of last secondary leno heald (10) for doup end in the left side of ground warp, second is ground warp, result be last secondary leno heald (10) front base combine (11) and doup (12) lifting doup end is walked around through below, forward right side to from the left side strand of ground warp, such Drafting Method wears method on a combination leno heald left side.
2. the leno heald combination return device a kind of digital Rapier looms as claimed in claim 1 adopted in the novel Drafting Method of weaving LENO AND GAUZE and the method, it is characterized in that: described leno heald combination return device comprises return device (1) and lower return device (2), described upper return device (1) comprises support (3), tension regulator assembly (4), pulling force regulating spring (5), heald frame (6), carinula bar nylon synchronized links part (7), carinula bar (8), carinula bar positioning sliding block (9), leno heald (10), described support (3) fixes on the ground, support (3) is fixed with some groups of tension regulator assemblies (4), pulling force regulating spring (5) is connected with under described tension regulator assembly (4), described pulling force regulating spring (5) lower end is connected with carinula bar nylon synchronized links part (7), described carinula bar nylon synchronized links part (7) is all connected with two pulling force regulating springs (5), described carinula bar nylon synchronized links part (7) below is connected with some carinula bars (8), the two ends of described carinula bar (8) are provided with carinula bar positioning sliding block (9), the quantity of described heald frame (6) has some, leno heald (10) is installed between described heald frame (6), described leno heald (10) comprises front base and combines (11), rear base combines (21) and a slice doup (12), the shape that described front base combines (11) and rear base comprehensive (21) is S shape, front base combines (11) and rear base combines (21) in left and right corresponding relation, respectively there is heald frame perforation (13) at the two ends that described front base combines (11) and rear base comprehensive (21), the side, middle part that described front base combines (11) and rear base comprehensive (21) has a doup to wear groove (14), the shape of described doup (12) is half arc, respectively there is carinula bar perforation (15) at the two ends of described doup (12), there is a wire hole (16) at the middle part of described doup (12), the two ends of described doup (12) are each passed through the doup that front base combines (11) and rear base comprehensive (21) and wear groove (14), described lower return device (2) comprises pedestal (17), tension regulator assembly (4), pulling force regulating spring (5), heald frame (6), carinula bar nylon synchronized links part (7), carinula bar (8), carinula bar positioning sliding block (9), leno heald (10), described tension regulator assembly (4) is fixed on pedestal (17), the quantity of tension regulator assembly (4) has some, described tension regulator assembly (4) is connected with pulling force regulating spring (5), described pulling force regulating spring (5) lower end is connected with carinula bar nylon synchronized links part (7), described carinula bar nylon synchronized links part (7) is all connected with two pulling force regulating springs (5), described carinula bar nylon synchronized links part (7) top is connected with some carinula bars (8), the two ends of described carinula bar (8) are provided with carinula bar positioning sliding block (9), the quantity of described heald frame (6) has some, leno heald (10) is installed between described heald frame (6), described leno heald (10) comprises front base and combines (11), rear base combines (21) and a slice doup (12), the shape that described front base combines (11) and rear base comprehensive (21) is S shape, front base combines (11) and rear base combines (21) in left and right corresponding relation, respectively there is heald frame perforation (13) at the two ends that described front base combines (11) and rear base comprehensive (21), the side, middle part that described front base combines (11) and rear base comprehensive (21) has a doup to wear groove (14), the shape of described doup (12) is half arc, respectively there is carinula bar perforation (15) at the two ends of described doup (12), there is a wire hole (16) at the middle part of described doup (12), the two ends of described doup (12) are each passed through the doup that front base combines (11) and rear base comprehensive (21) and wear groove (14).
3. the leno heald combination return device a kind of digital Rapier looms as claimed in claim 2 adopted in the novel Drafting Method of weaving LENO AND GAUZE and the method, it is characterized in that: described tension regulator assembly (4) comprises retract bolt (18), flexible rotating screw bolt (19) and steel turn-buckle hook (20), described flexible rotating screw bolt (19) one end is fixed on support (3) top, described flexible rotating screw bolt (19) one end is connected with retract bolt (18), the other end of described retract bolt (18) is connected with steel turn-buckle hook (20).
4. the leno heald combination return device a kind of digital Rapier looms as claimed in claim 2 adopted in the novel Drafting Method of weaving LENO AND GAUZE and the method, it is characterized in that: described upper return device (1) and lower return device (2) misplace correspondence up and down, the leno heald (10) of described upper return device (1) and the leno heald (10) of adjacent lower return device (2) form one group of complete leno heald (10) group, the every pair of described leno heald (10) joins two panels heald frame (6), often organizes leno heald (10) assembly four heald frames (6).
5. the leno heald combination return device a kind of digital Rapier looms as claimed in claim 2 adopted in the novel Drafting Method of weaving LENO AND GAUZE and the method, it is characterized in that: the quantity of described leno heald (10) has some pairs, the every pair of described leno heald (10) is all furnished with two carinula bars (8), described two carinula bars (8) are horizontal through carinula bar perforation (15) at doup (12) two ends on same straight line, described two carinula bars (8) are positioned in same level, described carinula bar positioning sliding block (9) and carinula bar (8) are detachable connection.
CN201510653437.XA 2015-10-10 2015-10-10 Novel drafting method for weaving lenos on digital rapier loom and leno heald combined returning device adopted in method CN105256433A (en)

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CN106757648A (en) * 2017-02-24 2017-05-31 安徽京九丝绸股份公司 A kind of kimonos twists side leno heald driving structure
CN107419408A (en) * 2017-09-15 2017-12-01 成都海蓉特种纺织品有限公司 A kind of lace stitch and its method for weaving
CN109208143A (en) * 2018-10-15 2019-01-15 浙江丝绸科技有限公司 A kind of novel leno heald return device of number rapier loom leno weaving

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