CN101724956B

CN101724956B - Shedding method of air jet loom

Info

Publication number: CN101724956B
Application number: CN2009101865629A
Authority: CN
Inventors: 祝章琛; 周平
Original assignee: Jiangsu Wangong Technology Group Co Ltd
Current assignee: Wujiang Wan Gong mechanical & electronic equipment corporation, Ltd
Priority date: 2009-11-23
Filing date: 2009-11-23
Publication date: 2012-03-07
Anticipated expiration: 2029-11-23
Also published as: CN101724956A

Abstract

The invention relates to a shedding method of an air jet loom. A heald frame moves to drive the upper layer and the lower layer of warp yarns to move, an opening is formed between the upper layer and the lower layer of warp yarns, and the weft yarns pass the opening; the distance between two crossing points at which the upper layer and the lower layer of warp yarns are crossed with the central line of the heald frame respectively is the height of the opening; and the height of the opening of the warp yarns on the entering weft side is less than that of warp yarns on the capturing the weft side. In actual application, if high-speed air current used for guiding the weft yarns reaches the entering weft side early, so that the height of the opening of the corresponding warp yarns on the entering weft side is controlled to be small; if the high-speed air current reaches the capturing weft side late, the height of the opening of the corresponding warp yarns on the capturing weft side is big, the quantity of motion of the warp yarns on the entering weft side is less than that of the warp yarns on the capturing weft side; and according to the time when the high-speed air current reaches the entering weft side and the capturing weft side, the height difference of the openings of the warp yarns is controlled from an angle of time, so that the quantity of motion of the opening of the warp yarns on the entering weft side is less than that of the warp yarns on the capturing weft side, which also meets the actual requirements of air jet weft insertion.

Description

The hatch method of air-jet loom

Technical field

The present invention relates to a kind of Warp opening method of air-jet loom.

Background technology

Air-jet loom utilizes shedding mechanism to carry out the harness motion of warp thread; Shedding mechanism is accomplished alternately going up and down of levels warp thread; In the process of alternately going up and down, the space of vacateing for the wefting insertion medium repeatedly between the levels warp thread is exactly a shed open, supplies weft yarn to pass through at the appointed time.

Used shuttle to come wefting insertion on the loom, the parameter designing of harness motion will consider that the size requirements of shuttle turnover shed open is mainly considered in the design of open height from the angle of shuttle in the past, and the warp thread of same page heald frame control has only a kind of open height.The wefting insertion medium of present air-jet loom utilization is an air-flow, and high velocity air is much littler than traditional shuttle dimensionally, no longer is the size of wefting insertion medium so pneumatic picking will consider, and should is the time of advent of wefting insertion medium.In addition, loom rotating speed in the past has only 100-200 rev/min, and the rotating speed of present air-jet loom reaches 900-1000 rev/min; Adapt to high-speed requirement; The traverse of shedding mechanism is short more good more, and also there is waste in this open height in the past along the identical design of reed width for present pneumatic picking, and present shedding mechanism can produce very big nothing firmly when high-speed cruising; Cause the rod member vibration big on the contrary, cause the fracture of warp thread.

Summary of the invention

The object of the invention will overcome above-mentioned technical problem exactly, and a kind of hatch method of air-jet loom is provided, and it can shorten the traverse of weft feeding side shedding mechanism, and the nothing that produces when reducing the shedding mechanism operation firmly.

Technical scheme of the present invention provides a kind of hatch method of air-jet loom; Drive the levels movement of the warp through integrated box movement; Between the levels warp thread, form opening; This opening supplies weft yarn therefrom to pass through, the levels warp thread respectively and the distance between two intersection points that intersect of the center line of heald frame be the open height of warp thread, the open height of warp thread that is in weft feeding side is less than the open height that is in the warp thread of catching the latitude side.In practical application; The time that the high velocity air that is used to guide weft yarn to pass through the opening between the levels warp thread arrives weft feeding side early; So the Warp opening height that weft feeding side is corresponding is little, high velocity air arrives and catches evening time of latitude side, so it is big to catch the Warp opening height of latitude side correspondence; The warp opening movement amount of weft feeding side is less than catching the latitude side; Can combine the actual conditions of air-jet loom to shorten the traverse of weft feeding side shedding mechanism, and can reduce nothing that shedding mechanism produces firmly when high-speed cruising, to alleviate the rod member vibration.

Further, to catching the latitude side, the open height of warp thread increases gradually from weft feeding side.From the wefting insertion medium---the time that high velocity air arrives, the open height of control warp thread with high velocity air time of advent by early increasing gradually to evening, thereby make the amount of exercise of Warp opening increase gradually, more can satisfy the needs of air-jet loom high-speed cruising.

The present invention compared with prior art; Has advantage: arrive weft feeding side and the time order and function of catching the latitude side according to the high velocity air that is used for wefting insertion, control the difference of the open height of warp thread, make the warp opening movement amount of weft feeding side less than the warp opening movement amount of catching the latitude side from the time angle; And this also meets the actual demand of pneumatic picking; Traverse at weft feeding side shortening shedding mechanism cuts the waste, and the nothing that produces during the shedding mechanism high-speed cruising firmly also can be very little; Make that the vibration of rod member is light, can avoid warp break.

Description of drawings

Accompanying drawing 1 has reflected the definition of Warp opening height for the structural representation of the controlling warp part of the shedding mechanism of application method provided by the present invention among the figure;

Accompanying drawing 2 is the structure chart of the heald frame part of the shedding mechanism of application method provided by the present invention;

Accompanying drawing 3 is the warp thread cross section at A-A place among Fig. 2;

Accompanying drawing 4 is the warp thread cross section at B-B place among Fig. 2;

Accompanying drawing 5 is the warp thread cross section at C-C place among Fig. 2;

Wherein: 1, heald frame; 2, harness eye; 3, warp thread; 4, heald frame saddle; 5, saddle seat.

The specific embodiment

The shedding mechanism of air-jet loom is carried out the harness motion of warp thread, and in the opening process, the levels warp thread alternately goes up and down, and continuous slot milling and form shed open between the levels warp thread supplies the wefting insertion device to carry the weft yarn guiding and passes.Below in conjunction with concrete embodiment content of the present invention is carried out illustrated in detail.

Shown in Fig. 1-2, warp thread 3 passes the harness eye 2 on the heald frame 1, and heald frame 1 moves along heald frame saddle 4, and heald frame saddle 4 is installed on the saddle seat 5 on the loom frame.Heald frame 1 drives warp thread 3 through harness eye 2, and heald frame 1 move according to the order of sequence, make warp thread 3 be raised and warp thread 3 is divided into two-layer up and down, along with the motion of heald frame, the alternately up-down of warp thread 3 of levels, and between levels warp thread 3, form shed open.

As shown in Figure 1, levels warp thread 3 respectively and the distance H between two intersection points that intersect of the center line of heald frame 1 be the open height of warp thread, and open height is the important parameter of harness motion.For air-jet loom; Through the high velocity air wefting insertion; The open height of warp thread needn't be considered the size requirements of shuttle turnover shed open; More can satisfy the demand and design the Warp opening height according to the priority time of weft yarn arrival reed width, the priority time of weft yarn arrival reed width is then depended on the time that high velocity air arrives.

As everyone knows, high velocity air arrives weft feeding side earlier, and the back arrives and catches the latitude side, and weft feeding side is promptly represented in the M zone that marks among Fig. 2, the side that it is introduced into for weft yarn, and the latitude side is then represented to catch in the n-quadrant, and this passes a side of shed open for weft yarn.From the time angle, be used for morning time that wefting insertion passes the high velocity air arrival weft feeding side of shed open, the Warp opening height that weft feeding side is corresponding is little, and high velocity air arrives evening time of catching the latitude side, and the Warp opening height of catching latitude side correspondence is big; If from promoting the technological requirement of warp thread, be unequal along the amount of exercise of reed width direction warp thread 3, the warp opening movement amount of weft feeding side is less than the warp opening movement amount of catching the latitude side.

Combine Fig. 2 can find out that the open height of warp thread 3 changes with reed width from Fig. 3-5, the open height near the warp thread 3 of weft feeding side is more little more, and the open height of more approaching warp thread 3 of catching the latitude side is big more.A-A cross section shown in Figure 3 promptly corresponding among Fig. 2 near the cross section of the warp thread 3 of weft feeding side; Its open height is Ha, B-B cross section shown in Figure 4 be in the presentation graphs 2 near the cross section of the warp thread 3 at reed width middle part, its open height is Hb; Approaching cross section of catching the warp thread 3 of latitude side in the C-C cross section presentation graphs 2 shown in Figure 5; Its open height is Hc, need to prove, three cross sections that Fig. 3-5 shows are in kind according to identical ratio reflection fully; Corresponding to illustrated three cross sections, following formula is set up: Ha＜Hb＜Hc.

Main points have been mentioned in the above-mentioned Warp opening method; That is exactly along reed width change shed open size; Open height through control warp thread 3 changes and realizes; The open height of warp thread 3 is then controlled through the kinematic parameter that limits heald frame 1, and the kinematic parameter of heald frame 1 is then set according to the actual demand of air-jet loom.After reed width change shed open size; The warp opening movement amount is also unequal along reed width, and this can the whole traverse that shortens shedding mechanism, and the nothing that shedding mechanism produces when high-speed cruising is firmly then considerably less; Both can reduce waste; Can alleviate the vibration of rod member again, avoid warp break as far as possible, more can satisfy the high-speed cruising demand of air-jet loom.

More than combine diagram to be illustrated to specific embodiment of the present invention; But protection content of the present invention is not only limited to above embodiment, in affiliated technical field of the present invention, and the common knowledge of a GPRS; Just can in its technological main idea scope, carry out diversified change.

Claims

1. the hatch method of an air-jet loom; Drive the levels movement of the warp through integrated box movement; Between the levels warp thread, form opening; This opening supplies weft yarn therefrom to pass through, the levels warp thread respectively and the distance between two intersection points that intersect of the center line of heald frame be the open height of warp thread, it is characterized in that: the open height of warp thread that is in weft feeding side is less than the open height that is in the warp thread of catching the latitude side.

2. hatch method according to claim 1 is characterized in that: to catching the latitude side, the open height of warp thread increases gradually from weft feeding side.