Summary of the invention
The objective of the invention is to select yarn feeding device drag hook stroke little, can only form the deficiency of two warp thread positions up and down, provide a kind of electronic jacquard that can form three warp thread positions to select yarn feeding device at existing electronic jacquard; The simple compactness of this apparatus structure, economy, energy consumption be low, can form three warp thread positions, reliable.The objective of the invention is to be achieved through the following technical solutions: a kind of electronic jacquard that can form three warp thread positions selects yarn feeding device, and it is mainly separated the electronic jacquard that supports by several by side stand and medium-height trestle and selects the yarn unit to form; Wherein, each electronic jacquard selects the yarn unit to comprise: a medium-height trestle, two electromagnet, two pairs of magnetic conduction swing arms, two pairs of drag hooks, four movable pulleys, three ropes, fixed pulley, fixed block and snap joint; Two electromagnet are separately fixed at the medium-height trestle both sides, and two pairs of magnetic conduction swing arms are enclosed within on the bearing pin of medium-height trestle head, lay respectively at the both sides of two electromagnet; One end of every pair of magnetic conduction swing arm has a pair of electromagnet armature to match with corresponding electromagnet, and the other end has a pair of sharp mouth to cooperate with drag hook, is connected with a spring between magnetic conduction swing arm and the electromagnet; First movable pulley and second movable pulley are formed running block, the 3rd movable pulley and the 4th movable pulley by support and are formed a running block by support; First rope is walked around first movable pulley, and two links to each other with two drag hooks of first pair of drag hook respectively; Second rope is walked around the 3rd movable pulley, and two links to each other with two drag hooks of second pair of drag hook respectively; The 3rd rope is walked around the 4th movable pulley, fixed pulley and second movable pulley successively, and two links to each other with snap joint with fixed block respectively.Fixed block and fixed pulley are fixed on the medium-height trestle, and plane, fixed pulley place is vertical with plane, movable pulley place.
With prior art relatively, the invention has the beneficial effects as follows:
1, the magnetic conduction swing arm flexibly connects by being positioned at side stand or the medium-height trestle head position bearing pin near electromagnet, the position of magnetic conduction swing arm bearing pin gives device of the present invention good compactedness, makes magnetic conduction swing arm pivot structure keep certain clearance with electromagnet all the time.
2, each magnetic conduction swing arm is stretched out along the bearing pin both sides, and the last external part of magnetic conduction swing arm is an electromagnet armature, and the following external part of magnetic conduction swing arm is Yi Jianzui.When its electromagnet armature during away from top electromagnet, if this moment, electromagnet was started working, the center line that the structure of magnetic conduction swing arm and geometric position make the relative device of its sharp mouth away from or remain on place far away.
3, this device comprises and makes the magnetic conduction swing arm along the elastic recovery device of direction of its sharp mouth near the device center line.The sharp mouth that these return mechanisms promote the magnetic conduction swing arm moves to the fixing position of drag hook.
4, each drag hook has a hook, is used for interfixing with the sharp mouth of magnetic conduction swing arm.
5,5 pulleys are distributed in different planes, have rationally utilized the space, make structure compact more, fixed pulley is connected with medium-height trestle, 4 movable pulley two dual-purpose supports link together, can be paired move up and down, their relative displacement makes the shed open forming device can reach the position of three needs.
6, an end is fixed on the rope on the medium-height trestle, and by the effect of following three pulleys, make that the snap joint of the rope other end connects one or several heald are positioned on three differing heights according to the height and the spacing of above-mentioned three pulleys.
7, two identical, repeatedly put electromagnet and five pulleys one that can work respectively together and work, the heald height obtains lifting at double, realized the position of three differing heights simultaneously, the loom of weaving of configuration double shed is applicable to and weaves velveteen or carpet.
Description of drawings
Fig. 1 is that electronic jacquard of the present invention selects the part-structure cut-away view of yarn feeding device in the rest point position.
Fig. 2 is that electronic jacquard of the present invention selects the part-structure cut-away view of yarn feeding device at upper dead center position.
Among Fig. 3, (a) be that electronic jacquard selects the structure cutaway view of yarn feeding device in first position according to the present invention, (b) being that electronic jacquard selects the structure cutaway view of yarn feeding device second position according to the present invention, (c) is that electronic jacquard selects the structure cutaway view of yarn feeding device the 3rd position according to the present invention;
Among the figure, medium-height trestle 1, first electromagnet 2, first pair of magnetic conduction swing arm 3, first pair of drag hook 4, griffe 5, spring 6, first rope 7, second rope 8, first movable pulley 9, second movable pulley 10, the 3rd movable pulley 11, the 4th movable pulley 12, the 3rd rope 13, fixed pulley 14, fixed block 15, snap joint 16, first electromagnet armature 17, drag hook top 18, first pair of sharp mouth 19, second electromagnet 20, second electromagnet armature 21, bearing pin 22, second pair of magnetic conduction swing arm 23, second pair of sharp mouth 24, second pair of drag hook 25, second iron core 26, first iron core 27, drag hook top 28, support 29.
The specific embodiment
The electronic jacquard that the present invention can form three warp thread positions selects yarn feeding device, and it is mainly separated the electronic jacquard that supports by several by side stand and medium-height trestle and selects the yarn unit to form.Each electronic jacquard selects the yarn unit to comprise a medium-height trestle, two identical, repeatedly put the electromagnet that together can work respectively and be fixed on the medium-height trestle both sides, four magnetic conduction swing arms lay respectively at the both sides of two electromagnet, one end of each magnetic conduction swing arm has an electromagnet armature to match with electromagnet, the other end has a Jian Zui to match with a drag hook, drag hook moves up and down with griffing under the effect griffing, two magnetic conduction swing arms of same electromagnet drive a fixed pulley group of being made up of two movable pulleys by rope, two running blocks are by a fixed pulley contact, plane, fixed pulley place is vertical with plane, electromagnet place, by the cooperation of two running blocks and a fixed pulley, realize three warp thread positions.Four magnetic conduction swing arms are controlled respectively by two electromagnet in couples and are fixed or do not fix four drag hooks, the rotation of paired magnetic conduction swing arm can not cause the distortion of self and selected mobile drag hook about two electromagnet, and this can be avoided the mechanical fatigue of these parts.
Below in conjunction with drawings and Examples the present invention is described in further detail, it is more obvious that purpose of the present invention and effect will become.
As shown in the figure, the present invention's electronic jacquard that can form three warp thread positions selects yarn feeding device mainly to separate the electronic jacquards that support by several by side stand and medium-height trestle (not shown) to select the yarn unit to form.Wherein, each electronic jacquard selects the yarn unit to comprise: medium-height trestle 1, two 2,20, two pairs of magnetic conduction swing arms 3,23 of electromagnet, 9,10,11,12, three ropes 7,8,13 of 4,25, four movable pulleys of two pairs of drag hooks, fixed pulley 14, fixed block 15 and snap joint 16.Two electromagnet 2,20 are separately fixed at medium-height trestle 1 both sides, and two pairs of magnetic conduction swing arms 3,23 are enclosed within on the bearing pin 22 of medium-height trestle 1 head, lay respectively at the both sides of two electromagnet 2,20.One end of every pair of magnetic conduction swing arm 3,23 has a pair of electromagnet armature 17,21 to match with corresponding electromagnet 2,20, the other end has a pair of sharp mouth 19,24 to cooperate with drag hook 4,25, be connected with spring 6 between magnetic conduction swing arm 3,23 and the electromagnet 2,20, spring 6 is used for promoting magnetic conduction swing arm 3,23.Four movable pulleys 9,10,11,12 are formed two running blocks by support 29, link to each other with two pairs of drag hooks 4,25 by rope 7,8 respectively.The 3rd rope 13 gets up fixed block 15, two running blocks, fixed pulley 14 and snap joint 16 polyphones.Fixed block 15 is fixed on the medium-height trestle 1, and fixed pulley 14 also is fixed on the medium-height trestle 1, and plane, fixed pulley 14 place is vertical with plane, movable pulley 9,10,11,12 place.
Specifically, first movable pulley 9 and second movable pulley 10 are formed a running block, the 3rd movable pulley 11 and the 4th movable pulley 12 by support 29 and are formed a running block by support 29.First rope 7 is walked around first movable pulley 9, and two links to each other with two drag hooks of first pair of drag hook 4.Second rope 8 is walked around the 3rd movable pulley 11, and two links to each other with two drag hooks of second pair of drag hook 25.The 3rd rope 13 is walked around the 4th movable pulley 12, fixed pulley 14 and second movable pulley 10 successively, and two links to each other with snap joint 16 with fixed block 15 respectively.
As shown in Figure 1, when electromagnet 2,20 is not switched on work, mobile armature 17,21 under spring 6 effect away from the iron core of electromagnet 2,20.As shown in Figure 2, when electromagnet 2,20 energising work, the electromagnetic force of its generation is greater than the elastic force of spring 6, and the electromagnetic force elastic force that overcomes spring guarantees that mobile armature 17,21 is in binding site like this.
Fig. 3 shows operation principle of the present invention, and in resting position, electromagnet 2,20 is not worked, and under the effect of spring 6, magnetic conduction swing arm 3,23 is promoted along the direction that makes drag hook 4,25 near the device center line, as shown in Figure 1.
When drag hook 4,25 during near its orbit centre upper dead center position, be positioned at the drag hook top 18,28 on drag hook 4,25 tops, because the inclined-plane of its conical in shape and sharp mouth 19,24 outer surfaces, top 18,28 is pushed sharp mouth 19,24 open and is made its center line away from device, when sharp mouth 19,24 is pushed on top 18,28 open, promote the electromagnet armature 17,21 of magnetic conduction swing arm 3,23 upper ends and contact with iron core 26,27 on the electromagnet 2,20.At this moment, electromagnet 2,20 can be worked or not work, as shown in Figure 2.
With a side griffe 5 the motion be example, as the device right side griffe 5, below described every pair of magnetic conduction swing arm 3,23, drag hook 4,25, electromagnet armature 17,21 in the magnetic conduction swing arm 3,23 and drag hook 4,25 all refer to the corresponding single part on right side among Fig. 3.
When electromagnet 2,20 no power whens work all, spring 6 is pushed magnetic conduction swing arm 3,23 open, 18,28 sharp relatively mouth 19,24 motions of drag hook top, the result makes sharp mouth 19,24 be fixed on the top 18,28 of drag hook 4,25, drag hook 4,25 is fixed on top dead center position on its track by sharp mouth 19,24, as the left hand view of Fig. 2.After the descending motion, if griffe 5 upwards push-and-pull hook 4,25 it is thrown off from sharp mouth 19,24, drag hook 4,25 remains on position shown in Fig. 3 (a) always.This moment, pulley 9,10,11,12,14 and rope 7,8,13 were all at original invariant position, shown in Fig. 3 (a).
When the 20 energising work of second electromagnet and first electromagnet 2 were not worked, electromagnet armature 21 overcame the elastic force of spring 6, abuts against on first iron core 26, shown in Fig. 2 right part of flg.Drag hook 25 descends and griffes 5 to engage from upper dead center position.This moment, first movable pulley 9 and second movable pulley 10 were still in situ constant, and the 3rd pulley 11 and the 4 12 simultaneously to bottom offset distance H, because the motion principle of movable pulley, make the snap joint 16 of the 3rd rope 13 lower ends walk around second pulley 10, the 4th movable pulley 12 and fixed pulley 14 in succession to bottom offset height 2H, reach position as Fig. 3 (b).
When first electromagnet 2 and second electromagnet 20 were switched on work simultaneously, electromagnet armature 17,21 overcame the elastic force of spring 6 simultaneously, abuts against on the iron core 27,26 of electromagnet 2,20.Drag hook 4,25 all descends from the top dead center position and griffes 5 to engage.This moment first movable pulley 9 and second movable pulley 10 to bottom offset distance H, the 3rd movable pulley 11 and the 4th movable pulley 12 also to bottom offset distance H, because the motion principle of movable pulley, therefore the snap joint 16 of the 3rd rope 13 lower ends of walking around second movable pulley 10, the 4th movable pulley 12 and fixed pulley 14 in succession to bottom offset apart from 2H+2H, be 4H, reached the position shown in Fig. 3 (c).
Therefore, electronic jacquard of the present invention selects yarn feeding device can obtain three kinds of positions of snap joint in shown in Figure 3, compares with the former yarn feeding device that selects, and shed opening has realized increase at double, the warp thread position of also having realized three kinds of differing heights simultaneously.Equip weaving system that electronic jacquard of the present invention selects yarn feeding device and turn round quite reliably under high speed, power consumption is lower.Can be used for producing special fabric, particularly as plain velvet fabric or carpet.