Roller type coiling unit in the braiding flat-bed machine
Technical field
The present invention relates to braiding flat-bed machine, more specifically to the roller type coiling unit in the braiding flat-bed machine.
Background technology
Generally use as shown in Figure 1 fabric traction, batching apparatus in the existing braiding flat-bed machine, it is made up of a main pulling roll 1, a pressure roller 2 and two help rolls 3.Main pulling roll 1 is by there being motor-driven, and pressure roller 2 relies on spring force to be pressed on the main pulling roll 1, and 3 pairs of fabrics of two help rolls play traction action, and is driven by a special small machine, and two distance between axles only have " being close to " and " separating " two retainings to adjust the position.Straight-bar machines is started working, when having certain length, fabric conforms to the principle of simplicity mouth when falling, the operator needs actuating help roll handle, make two help rolls 3 be in " separating " position, allow fabric pass in therefrom, continue to make it with hand traction and actuating pinch roller handle, fabric is passed between main pulling roll 1 and pressure roller 2, above-mentioned two handles of actuating afterwards make two help rolls 3 be in the position that " is close to " each other, and pressure roller is pressed on the main pulling roll.The rotation of two help rolls 3 will guide fabric downwards, the continuous tractive fabric of the rotation of main pulling roll, thus guarantee that the certain rate of tension of fabric makes the fabric behind the tractive have certain flatness.But there is following deficiency in this pulling device: need operator's manual operation to realize guiding, the tractive to braided fabric and batch in the braiding incipient stage; Simultaneously, the distance between axles of two guide reels can not be adjusted, guiding demand that can not fine adaptation different-thickness fabric; In addition, the guiding of fabric and traction (batching) are controlled by two motors respectively, increase production cost.
A kind of flat knitting machine fabric stretching apparatus that this case applicant proposes not long ago (application number: 200520074721.3), proposed the new organization plan of a kind of fabric traction, seen also Fig. 2.This device by two symmetries place the driving belt transmission mechanism form, symmetry is placed on the nozzle downside, respectively be equipped with clearance adjustment mechanism in two driving belt inboards, fabric is subjected to guiding, the traction of driving belt, and the clearance adjustment mechanism of driving belt inboard can be adjusted the gap of transmission automatically according to the thickness of fabric.But the parts of this its composition of draw-gear are more relatively, and structure and mounting process are comparatively complicated, and debugging work load is relatively large, manufacturing is had relatively high expectations, and cost is also bigger.
Summary of the invention
The object of the invention is to design and a kind ofly can guides automatically, tractive fabric and adjust drive gap automatically according to the thickness of fabric, and the roller type coiling unit in a kind of braiding flat-bed machine simple in structure, that Installation and Debugging convenient, cost is low, is realized by following scheme:
It places the downside of braiding flat-bed machine nozzle, comprise some axis of traction, two power transmission shafts, two groups of gear drives and two groups of belt transmission pairs, and movable governor motion of some pinch rollers one to one and pinch roller secured adjusted mechanism, described some axis of traction are a pair of in twos in nozzle downside center, horizontal positioned vertically is arranged in number row, movable governor motion of pinch roller and pinch roller secured adjusted mechanism place the axis of traction both sides that are above-mentioned arrangement respectively, two groups of gear drives place the two axial ends of described axis of traction respectively, two power transmission shafts are supported on the downside of described axis of traction by the bearing block symmetry at its two ends, and are in transmission connection by the secondary gear drive with institute's corresponding end of two groups of belt transmission that connects thereon.
Be equipped with mechanism's mount pad between the bearing block at described two power transmission shaft two ends respectively, the movable governor motion of described some pinch rollers, pinch roller secured adjusted mechanism are vertically equidistantly on the mechanism's mount pad that is installed in a side correspondingly respectively.
Described mechanism mount pad is the section bar support that contains T type groove.
The movable governor motion of described pinch roller is made up of movable bearing support, support plate, pinch roller support, spring and pinch roller, downside one end and the described mechanism mount pad of movable bearing support are hinged, the other end is connected with spring free end, the stiff end of spring is connected on mechanism's mount pad, the support plate middle part is hinged with movable bearing support, its two ends are hinged with the middle part of a pinch roller support respectively, the both sides of pinch roller travel(l)ing rest are hinged several pinch rollers respectively, these several pinch rollers are formed a press nips, and each press nips is pressed the outside of touching at an axis of traction.
Described pinch roller secured adjusted mechanism is made up of hold-down support and pinch roller, hold-down support is connected on the described mechanism mount pad, with several pinch rollers is that some press nips of one group vertically are hinged on the fixed support, each press nips is pressed and is touched in the outside of an axis of traction, and its articulated position is corresponding with the press nips on the described pinch roller travel(l)ing rest.
Described each group gear drive is all by driving gear, transition gear, shaft end gear and supporting plate are formed, described shaft end gear is arranged on the two ends of described axis of traction, described transition gear places between the two axial ends gear, engagement simultaneously is positioned at the two axial ends gear of its upper and lower sides, driving gear and the engagement of transition gear bottom, two mutually parallel and described supporting plates at regular intervals are fixed on the described bearing block, the two ends of described axis of traction are bearing in respectively on this two supporting plate, the driving gear of the shaft end gear of every end and homonymy on it, transition gear all places between this two supporting plate, and the two end axles of driving gear and transition gear is bearing on this two supporting plate.
The described supporting plate that is positioned on the power transmission shaft of the movable governor motion homonymy of pinch roller is to be combined by portable plate and fixed head, and portable plate is hinged by rotary pin shaft and fixed head.
Described belt transmission pair is made up of belt, drive pulley and driven pulley, and described drive pulley is coaxial to be connected on the power transmission shaft, and described driven pulley is coaxial to be connected on the driving gearshaft, and belt transmission connects drive pulley and driven pulley.
The skin bag of described axis of traction connects rubber, and is divided into some joints vertically, and adjacent two internodes are by the coaxial connection of a bearing pin.
Described power transmission shaft is divided into some joints vertically, and adjacent two internodes are by the coaxial connection of an axle sleeve.
The invention has the beneficial effects as follows: the gap that 1) can regulate the corresponding axis of traction of fabric according to the thickness of fabric automatically, especially the colored type of the projection on fabric is higher, when the thickness of same fabric differs big, have traction force uniformly, thereby make fabric more smooth after the draw-gear traction; 2) Installation and Debugging are convenient, as long as adjust the pre compressed magnitude of relevant stage clip, just can adjust the gap of the corresponding pinch roller in both sides and the pressure that fabric is executed thereof; 3) simple in structure, low cost of manufacture.
Description of drawings
Fig. 1 is the structural representation of the flat knitting machine fabric stretching apparatus that generally uses in the prior art
Fig. 2 is the structural representation of a kind of fabric traction device of proposing not long ago of this case applicant
Fig. 3 is a structural representation of the present invention
Fig. 4 is that the A of Fig. 3 is to view
Fig. 5 is that the B of Fig. 4 is to view
1 is pulling roll among the figure, the 2nd, and pressure roller, the 3rd, help roll, the 4th, fabric, the 5th, needle plate, 5 ' nozzle, the 6th, big roller, the 7th, little roller, the 8th, conveyer belt, the 9th, big roller, the 10th, clearance adjustment mechanism, 20 axis of traction, 20 ' be rubber layer, the 21st, power transmission shaft, the 22nd, mechanism's mount pad, the 23rd, hinge seat, 24 connect bearing pin, the 25th, connecting bushing, the 26th, bearing block, the 30th, pinch roller secured adjusted mechanism, the 31st, hold-down support, the 32nd, pinch roller, the movable governor motion of 40 pinch rollers, the 41st, movable bearing support, the 42nd, support plate, the 43rd, spring, the 44th, pinch roller travel(l)ing rest, the 50th, gear drive, the 51st, driving gear, the 52nd, transition gear, the 53rd, shaft end gear, the 55th, supporting plate, the 56th, portable plate, the 57th, fixed head, the 58th, rotary pin shaft, the 60th, belt transmission pair, the 61st, belt, the 62nd, drive pulley, the 63rd, driven pulley.
The specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Contrast Fig. 3, in nozzle downside center, there are 8 axis of traction 1 a pair of in twos, every pair of horizontal positioned, totally 4 pairs vertically are arranged in 4 rows, and 8 pairs the movable governor motion 40 of pinch roller and pinch roller secured adjusted mechanism 30 equidistantly separate on the mechanism that is not installed in both sides installs 22 vertically one to one.This mechanism's mount pad is the section bar support that contains T type groove.
The movable governor motion 40 of pinch roller is made up of movable bearing support 41, support plate 42, spring 43, pinch roller support 44 and pinch roller 32, downside one end of movable bearing support 41 is hinged by hinge seat 23 and mechanism's mount pad 22, the other end is connected with the free end of spring 43, and the stiff end of spring 43 is connected on mechanism's mount pad 22.The middle part of support plate 42 and movable bearing support 41 are hinged, the two ends of each movable bearing support 41 are hinged with the middle part of a pinch roller support 44 respectively, the both sides of pinch roller support 44 are hinged three pinch rollers 32 respectively, and these three pinch rollers are formed a press nips, and each press nips is pressed the outside of touching at an axis of traction 1.
Pinch roller secured adjusted mechanism 30 is made up of hold-down support 31 and pinch roller 32, hold-down support is connected on mechanism's mount pad 22, with three pinch rollers 32 is that one group four press nips vertically are hinged on the fixed support 31, its articulated position is corresponding one by one mutually with the press nips on the pinch roller support 41, each press nips is pressed the outside of touching at an axis of traction 1
Two gear drives 50 that are arranged on axis of traction 20 two ends all are made up of driving gear 51, transition gear 52, shaft end gear 53 and supporting plate 55.Shaft end gear 53 is arranged on the two ends of axis of traction 20, and present embodiment is at the two ends of axis of traction 20 processing shaft end gear 53.The two groups of gear drives 50 and all axis of traction 20 that split in axis of traction 20 both sides all are bearing on the supporting plate 55.The two ends of axis of traction 20 are bearing in respectively on the two mutually parallel and supporting plates 55 at regular intervals.Two supporting plates 55 of each end are fixed on its bearing block 26 with end, see also Fig. 4.Shaft end gear 53 in the gear drive 50 of this end, driving gear 51 and transition gear all 52 place between this two supporting plate 54.The two axial ends of driving gear 51 and transition gear 52 is bearing on this two supporting plate 55.Driving gear 51 meshes transition gear 52 bottom, and each transition gear 52 places between the two axial ends gear 53 and engagement simultaneously is positioned at these two shaft end gears of its upper and lower sides, sees also Fig. 5.Transition gear 52 mainly plays transmission and changes the gear rotation direction, rotates with the same direction that keeps all shaft end gears 53 (being axis of traction 1).
In the gear drive 50 of movable governor motion one side of pinch roller, supporting plate 55 is wherein made combined type, forms 57 by portable plate 56, fixed head, and portable plate 56 is hinged by rotary pin shaft 58 and fixed head 57, please again referring to Fig. 3.One groove 59 is arranged on the portable plate 56, and fixed head 57 is embedded in this groove 59, and the groove 59 on fixed head 57 and the portable plate 56 has certain clearance, carries out the space that trace rotates so that portable plate 56 relative fixed plates 57 to be provided.
Because axis of traction 20 is longer, more steady in order to guarantee that axis of traction 20 rotates, the present invention rotates axis of traction 20 and adopts the bilateral transmission.Promptly the belt transmission pair 60 by two ends is in transmission connection, and the gear drive 50 of opposite ends realizes.The two ends meeting of transmission simultaneously brings the synchronism problem, address this problem for fine, at present embodiment middle axis of traction 20 is divided into 3 joints, adjacent two joints are by connecting with the suitable cooperation that is connected bearing pin 24, when secondary 60 transmissions of belt transmission had synchronous error, the rotating speed at axis of traction 20 two ends was inconsistent, thereby produces torsion at axis of traction, said structure can make the axis of traction of adjacent two joints produce relative rotation, and eliminates this torsion that causes because of synchronous error with this.Frictional force when the outside bag of axis of traction 20 connects a rubber layer with increase guiding, tractive fabric.Two groups of belt transmission pairs 60 all adopt by cog belt and toothed belt wheel.The coaxial respectively both sides that are connected power transmission shaft 21 of two drive pulleys 62 are on the coaxial respectively two excessive gear shaft I that are connected bottom of two driven pulleies 63.The two ends of power transmission shaft 21 are equipped with mechanism's mount pad 22 by the bearing supporting in its two end axles bearing 26 between diaxon bearing 26.Power transmission shaft 21 is longer, and about 1.4 meters, for easy for installation, be divided into 3 joints, adjacent two save connecting bushing 25 connects.
After the braiding beginning, fabric 4 with certain-length is from nozzle 5 ' fall to topmost on a pair of axis of traction 53, this that is being rotated to the axis of traction traction downwards, if irregular braiding is spent type and the thickness of fabric 4 is constantly changed on the fabric 4, the distance between axles of corresponding a pair of axis of traction can change automatically thereupon, this be because: axis of traction is more elongated, can more easily produce the distortion of elasticity winding degree along with the thickness of fabric 4, the suffered power of press nips that pressure is touched on each axis of traction also changes thereupon, the pinch roller support that can make hinged pinch roller rotates around the pin joint of itself and support plate 42, support plate 42 according to two ends hinged pinch roller support to the size balance situation of its application of force, produce the rotation of itself and movable bearing support 41 pin joints, and movable bearing support 41 can rotate around the pin joint of itself and mechanism's mount pad, relatively moving of the corresponding press nips of so final generation finally makes the distance between axles of a pair of axis of traction change.Simultaneously, the two ends that are positioned at 4 axis of traction 20 of movable governor motion one side of pinch roller all are bearing on the portable plate 56, and portable plate 56 is hinged on the fixed head 57, and it can rotate according to the stressed general effect of each axis of traction on it, finally produces the variation of the distance between axles of axis of traction.
The debugging of the utility model Unit Installation is very convenient, as long as adjust the pretightning force of spring 43, just can regulate the appropriate gap between the corresponding carry-over pinch rolls.