The schlagblech transmission mechanism
Technical field
The utility model relates to a kind of Raschel looms, particularly controls the transmission mechanism of schlagblech action on a kind of Raschel looms.
Background technology
Raschel looms be take fabric traction direction and shank plane layer more than 140 ° angle, as a class warp knitting machine of design feature, be commonly used to the tricot of the institutional framework more complicated such as weaving curtain, the tablecloth, bedcover, woollen blanket, lace, fishing net, packaging bag.
By looping device, yarn is formed coil and mutually goes here and there to overlap to connect during the warp knitting machine braided fabric and form., in order to improve the stereoeffect of textile surface, at warp knitting machine guide chase comb position, yarn pressing device is arranged to reach this weave effect.Schlagblech in yarn pressing device, along pressing the yarn direction to do to pressing down and upper shifting movement,, according to technological requirement, presses angle between yarn direction and vertical direction to change between 0 °-90 °.Sley bar, as the transverse motion with the fuselage parallel direction, generally, presses the yarn direction of motion and the guide bar shogging direction of motion perpendicular.The warp knitting machine that this class has a yarn pressing device is called the warp knitting machine with schlagblech.
Realize that pressing the final executive item of yarn motion is schlagblech, by its motion of main shaft drives.The forms of motion of schlagblech is linear reciprocating motion, and transmission mechanism should be arranged between main shaft and schlagblech be the linear reciprocating motion of schlagblech with the continuous rotational transform of main shaft.
Chinese invention patent prospectus CN101363164A discloses a kind of fall plate moving apparatus of warp knitting machine, the main shaft and the schlagblech that comprise warp knitting machine, described main shaft drives the schlagblech motion jointly by transmission mechanism identical more than two, and each transmission mechanism is in series by conjugate cam mechanism, the first planar pivot four-bar mechanism, the second plane hinge and slider-rocker mechanism.this Schlagblech moving device, because schlagblech relies on the appearance profile of conjugate cam to meet at the pressure yarn rate request of pressing the yarn stage fully, like this in the situation that press the yarn speed degree of depth dark shorter with the pressure yarn time, moving displacement curvilinear motion on the conjugate cam profile is very steep, its speed and accelerating curve exist discontinuous or sudden change, and pressing the yarn stage larger by the traverse of the telecontrol equipment of conjugate cam driving, therefore there is great impact in this Schlagblech moving device when motion, greatly reduce braiding speed and the stability of machine, can't adapt to braiding at a high speed.
Summary of the invention
The utility model technical issues that need to address are to provide on a kind of Raschel looms the transmission mechanism that is used for controlling the schlagblech action.
For solving above-mentioned technical problem, schlagblech transmission mechanism of the present utility model comprises power transmission shaft and the schlagblech that is connected with the output main shaft by Timing Belt, be set with on described power transmission shaft and be converted to reciprocating eccentric with rotatablely moving, described schlagblech is fixed on the other end of eccentric.
Described power transmission shaft is bent axle, has been set with the connecting rod cover on the connecting rod neck of described bent axle, and described eccentric is connecting rod cover and the coordinating of bent axle; The other end of described connecting rod cover is fixed with connecting rod, and described schlagblech is fixed on the top of connecting rod.
Described power transmission shaft is d-axis, is provided with eccentric wheel on described power transmission shaft, and the described eccentric wheel outside is set with connecting rod, and described eccentric is eccentric wheel and the coordinating of connecting rod; The other end of described connecting rod is schlagblech fixedly.
Further, also comprise the balance staff pedestal that is fixed on the warp knitting machine frame, the rotating balance staff that is connected with on described balance staff pedestal, be fixed with the first swing arm and the second swing arm on described balance staff, and described the first swing arm and connecting rod are flexibly connected; Described the second swing arm is connected with first connecting rod by clutch shaft bearing, and described first connecting rod front end is connected with second connecting rod by the second bearing, and the other end of described second connecting rod is rotatably connected on the balance staff pedestal, and described schlagblech is fixed on second connecting rod.
After adopting said structure, by eccentric, rotatablely moving of power transmission shaft is converted to the reciprocating motion of schlagblech, realized the motion of pressure yarn.In addition, by balance staff, first connecting rod and second connecting rod, the straight reciprocating motion of schlagblech is become around the amplitude of oscillation of second connecting rod one end and moves, schlagblech and fabric side are angled like this, press the yarn dynamics larger, press the yarn better effects if.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is the structural representation of the utility model the second embodiment.
Fig. 2 is the structural representation of the utility model the first embodiment.
Fig. 3 is the side view of the utility model Fig. 2.
Fig. 4 is the structural representation that in the utility model second, in embodiment, connecting rod overlaps.
In figure: 1 is power transmission shaft, and 2 is eccentric wheel, and 3 is the balance staff pedestal, and 4 is balance staff, and 5 is the first swing arm, and 6 is connecting rod, and 7 is the second swing arm, and 8 is clutch shaft bearing, and 9 is first connecting rod, and 10 is second connecting rod, and 11 is the second bearing, and 12 is pivot point, and 13 is schlagblech
201 is trunnion, and 202 is connecting rod neck, and 203 is the connecting rod cover, and 204 is connecting rod, and 205 is schlagblech
401 is the first through hole, and 402 is the second through hole
The specific embodiment
The utility model realizes that pressing the final executive item of yarn motion is schlagblech, by its motion of output main shaft drives.The forms of motion of schlagblech is reciprocating motion, and the continuous rotational transform that should have transmission mechanism will export main shaft between output main shaft and schlagblech is the reciprocating motion of schlagblech.Because the utility model is the schlagblech transmission mechanism of warp knitting machine, the output main shaft of warp knitting machine need to drive a plurality of workpieces, so the output main shaft transmits power on power transmission shaft 1 by Timing Belt, other workpieces also obtain power by Timing Belt from the output main shaft, then power transmission shaft again with power transmission to schlagblech, realize the reciprocating action of schlagblech.The utility model is the reciprocating action that by eccentric, rotatablely moving of power transmission shaft 1 is converted to schlagblech 13.
Embodiment one:
The first embodiment of the present utility model provides the power transmission shaft of rotary power to be set to bent axle, as shown in Figure 2, described bent axle comprises the connecting portion between trunnion 201, connecting rod neck 202 and trunnion 201 and connecting rod neck 202, is set with connecting rod cover 203 on the connecting rod neck 202 of described bent axle.The shape of described connecting rod cover 203 as shown in Figure 4, the two ends of connecting rod cover have the first through hole 401 and the second through hole 402, described the first through hole 401 adapts with trunnion 201, by the first through hole 401 and coordinating of trunnion 201, connecting rod cover 203 is sleeved on trunnion 202 like this.Connecting rod Tao203De center is done eccentric mobilely with respect to trunnion 201 like this, and described eccentric is connecting rod cover 203 and the coordinating of bent axle, and rotatablely moving of bent axle is converted to connecting rod overlaps 203 straight reciprocating motion.As shown in Figure 3, then overlap the second through hole 402 stationary links 204 of 203 by connecting rod, finally schlagblech 205 is fixed on the top of connecting rod 204.The linear reciprocation action of connecting rod cover 203 just drives schlagblech 205 straight reciprocating motions like this, has realized the action of pressure yarn.
Embodiment two:
As shown in Figure 1, the second embodiment of the present utility model provides the power transmission shaft of rotary power to be set to d-axis, is provided with eccentric wheel 2 on described power transmission shaft 1, and the described eccentric wheel outside is set with connecting rod 6.Described eccentric is eccentric wheel 2 and the coordinating of connecting rod 6, and rotatablely moving of power transmission shaft 1 is converted to the straight reciprocating motion of connecting rod 6; , by at the fixing schlagblech of the other end of described connecting rod 6, so just rotatablely moving of power transmission shaft 1 is converted to the straight reciprocating motion of schlagblech again, realization pressure yarn moves.
Further, be converted to the reciprocal amplitude of oscillation motion of schlagblech around fixed pivot for the straight reciprocating motion with schlagblech.Fixing balance staff pedestal 3 on the warp knitting machine frame, the rotating balance staff 4 that is connected with on described balance staff pedestal 3, be fixed with the first swing arm 5 and the second swing arm 7 on described balance staff 4.Described the first swing arm 5 is flexibly connected with connecting rod 6, and described the second swing arm 7 is connected with first connecting rod 9 by clutch shaft bearing 8; Described first connecting rod 9 front ends are connected with second connecting rod 10 by the second bearing 11, the other end of described second connecting rod 10 is rotatably connected on balance staff pedestal 3, here the other end of second connecting rod 10 is pivot point 12, and described schlagblech 13 is fixed on second connecting rod 10.Like this, power transmission shaft 1 band movable eccentric wheel 2 rotations, eccentric wheel 2 promotes the first swing arm 5 by connecting rod 6, because the first swing arm 5 is fixing with balance staff 4, balance staff 4 is rotating to be connected on balance staff pedestal 3, the second swing arm 7 is fixed on balance staff 4; So swinging, the first swing arm 5 causes that the second swing arm 7 swings.Because the second swing arm 7 is connected with first connecting rod 9 by clutch shaft bearing 8; Described first connecting rod 9 front ends are connected with second connecting rod 10 by the second bearing 11, the other end of second connecting rod 10 is pivot point 12, the swing of the second swing arm 7 can promote second connecting rod 10 and swing around pivot point 12, again because schlagblech 13 is fixed on second connecting rod 10, so schlagblech 13, around pivot point 12 reciprocally swingings, realizes pressing the yarn motion.
Because warp knitting machine is in the braiding process, schlagblech 13 is high speed reciprocating motions, between first connecting rod 9 and second connecting rod 10, are connected and are connected with clutch shaft bearing with the second bearing 11 between first connecting rod 9 and the second swing arm 7, can reduce the friction at connected node place, extend the service life of schlagblech transmission mechanism.
Although more than described the specific embodiment of the present utility model, but those of skill in the art in the art are to be understood that, these only illustrate, and can make various changes or modifications to these embodiments, and not deviate from principle of the present utility model and essence.Scope of the present utility model is only limited by appended claims.