A kind of flat knitting machine fabric stretching apparatus
Technical field
The present invention relates to braiding flat-bed machine, more specifically to a kind of flat knitting machine fabric stretching apparatus.
Background technology
At present the pulling device in the braiding flat-bed machine is made up of two help rolls 3 that play guiding function and the pressure roller 2 that plays the main pulling roll 1 of traction action and have a spring as shown in Figure 1.Main pulling roll 1 is by there being motor-driven, and pressure roller 2 is pressed on the main pulling roll 1 and makes the fabric of tractive not have slippage substantially, and two help rolls 3 are driven by a special small machine, and it is whole that two distance between axles are adjustable, " being close to " and " separating " two adjustment positions is arranged between mutually.When weaving textile falls to the gap of certain-length between the needle plate of both sides, the operator needs actuating help roll handle, make two help rolls 3 be in " separating " position, fabric passes from the distance between axles of two help rolls 3, actuating pinch roller handle falls pinch roller again, and main pulling roll 1 and pressure roller 2 unclamp mutually, and fabric is drawn between main pulling roll and the pressure roller, above-mentioned two handles of actuating afterwards make two help rolls 3 be in the position that " is close to " each other; Pressure roller is pressed on the main pulling roll.The rotation of two help rolls 3 will guide fabric downwards, and the continuous tractive fabric of the rotation of main pulling roll, pressure roller are pressed on and make the main relatively pulling roll of fabric fricton-tight substantially on the fabric.This pulling device exists main deficiency to be: fabric can not be by automatically guiding, tractive, needs operator's manual operation to realize guiding, the tractive to fabric and batches in the incipient stage.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, design can guide automatically, tractive fabric and a kind of straight-bar machines pulling device of making fabric in tractive batches, more become smooth, it is realized by following scheme:
Be installed on the frame of needle-bar downside, the conveyer belt transmission mechanism that it is placed by two symmetries is formed, the conveyer belt transmission mechanism of each side all comprises big roller, little roller, big roller shaft, little roller shaft, driving belt and clearance adjustment mechanism, big roller and small gross are pulled on and are connected on big roller shaft and the little roller shaft, and by conveyer belt connection, transmission, big roller shaft and the parallel placement of little roller shaft, clearance adjustment mechanism places in the space of the driving belt inboard between big roller and the little roller, big roller shaft is slidably connected to frame by two supports, can do parallel moving.
Described big roller, little roller can be by being some discrete big rollers, small gross draws composition, be connected on big roller shaft and the little roller shaft, the big roller of each correspondence and little roller by one independently conveyer belt be connected, transmission, form a gear unit, both sides at each gear unit are respectively equipped with supporting bracket, side is provided with clearance adjustment mechanism within it, be provided with the conveyer belt hold-down mechanism in its outside, supporting bracket joint gap guiding mechanism, the conveyer belt hold-down mechanism also supports little roller shaft, and its two ends were connected with described two supports respectively after all supporting brackets were linked into an integrated entity by several connecting rods.
The clearance adjustment mechanism that is equipped with in the gear unit of a side conveyer belt transmission mechanism comprises mobile pinch roller combination, small gross pulling shaft support, splicing sleeve, adjust piece, tooth bar, gear, fork, connecting rod, push rod, screw rod, nut and spring, small gross pulling shaft support and nut are separately fixed at the upside and the downside of described supporting bracket, the two ends of described little roller shaft are bearing in respectively on the two small gross pulling shaft supports, screw rod is screwed on the nut, its upper end can push against the lower end of push rod, one end of the upper end of push rod and connecting rod is hinged, the bar portion of fork and the concentric supporting bracket that is articulated in of the center of rotation of gear, one end of fork and the other end of connecting rod are hinged, its other end is tight against gear rotates it in the same way, the wheel and rack engagement, tooth bar is connected with the adjustment piece and slips on supporting bracket, can do moving of vertical direction, one end of spring connects gear, the other end connects supporting bracket, splicing sleeve places between two supporting brackets by described connecting rod, mobile pinch roller combination is slipped splicing sleeve and is shelved on the regulating block, can move relative to supporting the interplanting horizontal direction.
In the opposite side conveyer belt transmission mechanism corresponding to a described side conveyer belt transmission mechanism
Little roller shaft is discrete;
The clearance adjustment mechanism that is equipped with in the gear unit comprises fixedly pinch roller combination, small gross pulling shaft support, splicing sleeve, the spring connecting rod, fork, connecting rod, push rod, screw rod, nut and spring, small gross pulling shaft support is hinged on the upside of described supporting bracket, each little roller shaft is bearing on the small gross pulling shaft support, nut is fixed on the downside of described supporting bracket, screw rod is screwed on the nut, the one end can push against an end of push rod, the upper end of push rod and the lower end of connecting rod are hinged, the bar portion of fork and the concentric supporting bracket that is articulated in of an end of spring connecting rod, one end of fork and the upper end of connecting rod are hinged, its other end is tight against the spring connecting rod rotates it in the same way, one end of spring connects the spring connecting rod, the other end connects supporting bracket, and fixedly the pinch roller combination is fixed on the splicing sleeve.
Described conveyer belt strainer comprises regulating wheel support, regulating wheel, spring, spring adjusting spiral shell stalk, nut, regulating wheel is connected with the regulating wheel support by its turning cylinder, regulating wheel support and described supporting bracket are hinged, the spring adjusting screw(rod) axially has constraint, circumferentially is connected on the supporting bracket without restrictions, nut is screwed in spring and regulates on the spiral shell stalk, spring one end is connected with nut, and an end is connected with the regulating wheel support.
Described mobile pinch roller combination comprises roller, roller shaft, rolling wheel support, connecting plate, spring, guide finger and position-limitting pin, roller shaft places on the support, roller is hinged on the roller shaft, rolling wheel support is to be provided with pilot hole, guide finger cross-under pilot hole one end is connected with connecting plate, spring places between rolling wheel support and the connecting plate, and position-limitting pin places the rolling wheel support both sides.
Described fixedly pinch roller combination comprises roller, roller shaft, rolling wheel support, connecting plate, spring and guide finger, roller shaft is put roller on support, roller is hinged on the roller shaft, rolling wheel support is provided with pilot hole, guide finger cross-under pilot hole one end is connected with connecting plate, and spring places between rolling wheel support and the connecting plate.
The invention has the beneficial effects as follows: 1), the present invention adopt mainly by large and small roller and conveyer belt forms coiler device can realize guiding and tractive to fabric is automatic, it is more convenient that fabric wrapping is operated; 2) the present invention also adopts some discrete large and small rollers, each to discrete large and small roller by one independently the conveyer belt transmission form some delivery units, and in each delivery unit, clearance adjustment mechanism is set, can do the part to the transmission gap adjusts easily, thereby can guarantee that fabric is subjected to even tractive in winding process, clearance adjustment mechanism imposes certain pressure to the coiling fabric simultaneously, thereby makes the fabric of reeling through the present invention more smooth; 3) apparatus of the present invention only need a drive motors, can reduce manufacturing cost.
Description of drawings
Fig. 1 is the structural representation of straight-bar machines pulling device in the prior art
Fig. 2 is a structural representation of the present invention
Fig. 3 is big roller shaft supporting device schematic diagram
Fig. 4 removes A behind the driving belt 10 to view among Fig. 2
Fig. 5 removes B behind the driving belt 10 to view among Fig. 2
Fig. 6 is the clearance adjustment mechanism structural representation in the conveyer belt transmission mechanism of both sides
Fig. 7 is that fixedly pinch roller makes up structural scheme of mechanism
Fig. 8 is mobile pinch roller combination structural scheme of mechanism
1 is pulling roll among the figure, the 2nd, and pressure roller, the 3rd, help roll, the 4th, fabric, the 5th, needle plate, the 6th, big roller, the 7th, little roller, the 8th, big roller shaft, 9,9 ' be little roller shaft, the 10th, conveyer belt, the 11st, supporting bracket, the 12nd, clearance adjustment mechanism, the 13rd, mobile pinch roller combination, the 14th, roller shaft, the 15th, roller, the 16th, adjust piece, the 17th, tooth bar, the 18th, gear, the 19th, connecting rod, the 20th, push rod, the 21st, screw rod, 22, the 57th, nut, 23,37,43,43 ' be spring, the 24th, connecting rod, the 25th, bearing, the 26th, bearing block, the 27th, splicing sleeve, the 28th, slip the hole, the 29th, spacer pin, the 30th, pin, the 31st, fixedly pinch roller combination, the 32nd, sliding seat, 33, the 33rd, small gross pulling shaft support, the 34th, fork, the 35th, skewed slot, the 36th, pin, the 38th, spring connecting rod, the 39th, gathering sill, 40, the 44th, guide finger, the 41st, rolling wheel support, the 42nd, connecting plate, the 47th, motor, the 48th, universal joint, the 49th, gearbox, the 50th, big roller bolster, the 51st, side gripper shoe, the 52nd, the regulating wheel rack shaft, the 53rd, regulating wheel support, the 54th, regulating wheel, the 55th, spring, 56 springs are regulated the spiral shell stalk, the 58th, step, the 59th, jump ring, the 60th, conveyer belt strainer.
The specific embodiment
The present invention will be further described below in conjunction with drawings and Examples.
Contrast Fig. 2, place the downside of needle plate 5 symmetrically by the both sides conveyer belt transmission mechanism that big roller 6, small gross draw 7, big roller shaft 8, small gross pulling shaft 9, conveyer belt 10 and clearance adjustment mechanism 12 are formed, the triangle gabarit shape of apparatus of the present invention integral body and the space of needle plate downside are very similar, so apparatus of the present invention can very compactly place needle plate 5 downsides, spacing from the knitting needle to apparatus of the present invention is very little, 20~30mm is only arranged, and the clamping length of fabric 4 in driving belt 10 can reach 200~250mm, and this flatness to the fabric 4 that is held, reels is very favourable.
Big roller 6 rotates and drives small gross by conveyer belt 10 and draws 7 to rotate, fabric 4 falls on the driving belt 10, driven downwards, because it is very little that the gap between two final drive gears can be transferred, chucking power makes fabric traction downward so driving belt has reliably to fabric, fabric 4 has kept the shape of source textile preferably under the even clamping of both sides conveyer belt 10, obtain better flatness simultaneously.
Contrast Fig. 3, the power shaft of gearbox 49 is connected with motor 47, and its output shaft is connected with big roller bolster 50 by universal joint 48, and this bolster is connected and coaxial line with big roller shaft 8.The two ends of two big roller shafts are bearing in respectively on the bearing 25, bearing 25 places in the bearing block 26, bearing block 26 slips on the sliding seat 32 that is fixed in frame, and two big roller shafts 9 can be done parallel moving with bearing block 26, thereby the distance between axles of two big roller shafts 8 is increased or reduces.
Contrast Fig. 4, Fig. 5, big roller in the present embodiment and small gross draw respectively and draw 7 to form by 13 discrete big rollers 6 and small gross.In left side conveyer belt transmission mechanism shown in Figure 4, little roller shaft be 13 independently small gross pulling shaft 9 ', each small gross draw 7 connect one independently small gross pulling shaft 9 '.In right side conveyer belt transmission mechanism shown in Figure 5,13 small grosses draw 7 coaxial being connected on the small gross pulling shaft 9.Big roller 6 coaxial being connected on the big roller shaft 8 in the conveyer belt transmission mechanism of both sides, big roller shaft 9 is put with small gross pulling shaft 9 or small gross pulling shaft 9 ' parallel opposition, each big roller 6, small gross to correspondence draw 7 all by an independent conveyor 10 transmissions, form a gear unit, be respectively arranged with supporting bracket 11 in the both sides of each gear unit.Each side conveyer belt transmission mechanism of present embodiment just is provided with 14 supporting brackets 11 like this, they are by three connecting rod 24 cross-under, the outside of the supporting bracket 11 of outermost both sides is respectively equipped with side gripper shoe 51, the two ends of connecting rod 24 are this supported on both sides plate 51 of cross-under and tighten up with nut that it is formed is whole respectively also, is fixed on the bearing block 26 by side gripper shoe 51.Supporting bracket 11 be used for joint gap guiding mechanism and supporting small gross pulling shaft 9,9 ', small gross pulling shaft 9,9 ' be to support by the small gross pulling shaft support 33 that is connected on the two corresponding supporting brackets 11.Each gear unit inboard all is provided with clearance adjustment mechanism, and the interior set clearance adjustment mechanism of gear unit is different in the conveyer belt transmission mechanism of both sides.
All clearance adjustment mechanisms are made up of mobile pinch roller combination 13, small gross pulling shaft support 33, splicing sleeve 27, adjustment piece 16, tooth bar 17, gear 18, fork 34, connecting rod 19, push rod 20, screw rod 21, nut 22 and spring 23 in the gear unit of contrast Fig. 6 right side conveyer belt transmission mechanism.Small gross pulling shaft support 33 is fixed on the upside of supporting bracket 11,22 lower portion that are fixed on supporting bracket 11 of nut, screw rod 21 is screwed on the nut 22, its upper end can push against the lower end of push rod 20, push rod 20 places in the gathering sill of nut 22 upsides, its upper end is hinged with the lower end of connecting rod 19, the right-hand member of connecting rod 19 upper ends and fork 34 is hinged, the bar portion of fork 34 and the concentric supporting bracket 11 that is articulated in of the center of rotation of gear 18, its left end is owing to spring 23 effects are tight against on a pin of gear 18 it, and both can rotate in the same way like this.One end of spring 23 connects gear 18, and the other end connects supporting bracket 11.Gear 18 and tooth bar 17 engagements, 18 of gears need to rotate less angle, so adopt partial gear.Tooth bar 17 with adjust piece 16 and link into an integrated entity by pin, all be provided with gathering sill 39 on it, and both gathering sills place on the guide finger 40 of supporting bracket 11 fully superimposedly, make both do moving of vertical direction along guide finger 40, adjust on the piece 16 and also are provided with two skewed slots 35.
Splicing sleeve 27 is mainly used in mobile pinch roller combination 13 or the fixedly pinch roller combination 31 in the guiding mechanism of fixed interval (FI).It places in the conveyer belt inner space between the large and small roller of each gear unit, and it is the same with the supporting bracket 11 of both sides to be to be fixed by cross-under connecting rod 24.Mobile pinch roller combination is made up of roller 15, roller shaft 14, rolling wheel support 41, connecting plate 42, spring 43, guide finger 44 and position-limitting pin 29, sees also Fig. 8.Roller shaft 14 places on the rolling wheel support 41, and roller 15 is hinged on the roller shaft 14, but counter roller support 41 ' rotation is adopted 3 row's rollers 15 in the mobile pinch roller combination 13 of present embodiment.Connecting plate 42 and splicing sleeve 27 are connected by screw, and the rear side of rolling wheel support 41 is provided with 3 pilot holes, this pilot hole of guide finger 44 cross-under, and the one end is connected with connecting plate 42.The both sides of rolling wheel support 41 respectively are provided with 2 position-limitting pins 29, and this position-limitting pin is used for whole mobile pinch roller combination 13 is shelved in the skewed slot of adjusting on the piece 16 35.Between rolling wheel support 41 and connecting plate 42 spring 43 is set, spring 43 is leaf springs, so that rolling wheel support 41 resets after moving horizontally.
Continue contrast Fig. 6, all clearance adjustment mechanisms 31 in the gear unit in the conveyer belt transmission mechanism of left side are by fixedly pinch roller combination 31, small gross pulling shaft support 33, splicing sleeve 27, spring connecting rod 38, fork 34, connecting rod 19, push rod 20, screw rod 21, nut 22 and spring 37 are formed.Small gross pulling shaft support 33 is hinged on the upside of supporting bracket 11, and nut 22 is fixed on the downside of supporting bracket 11.The same reason, screw rod 20 is screwed on the nut 22, its upper end can push against the lower end of push rod 20, the lower end of the upper end of push rod 20 and connecting rod 19 is hinged, the bar portion of fork 34 and the concentric supporting bracket 11 that is articulated in of an end of spring connecting rod 38, the left end of fork 34 and the upper end of connecting rod are hinged, and its right-hand member is owing to spring 37 effects are tight against on a pin of spring connecting rod 38 it, and both can rotate in the same way like this.One end of spring 37 connects spring connecting rod 38, and the other end connects supporting bracket 11.Fixedly pinch roller combination 31 is fixed on the splicing sleeve 11, adopt 2 row's rollers 15 in the fixedly pinch roller combination 31 of present embodiment, see also Fig. 7, be staggeredly located with three row's rollers 15 on the mobile pinch roller 13 in the corresponding side gear unit, to increase traction force to the coiling fabric.
Be equipped with conveyer belt strainer 60 in the outside of each gear unit 12, please contrast Fig. 2 again, it is regulated spiral shell stalk 56, nut 57 and regulating wheel rack shaft 52 by tension wheel shaft 52, regulating wheel support 53, regulating wheel 54, spring 55, spring and forms, regulating wheel 54 is connected with regulating wheel support 53 by its turning cylinder, regulating wheel support 53 is hinged by tension wheel shaft 52 and supporting bracket 11, tension wheel shaft 52 is major axis, and cross-under places all regulating wheel supports 53 of a side.The 56 upper end cross-under of spring adjusting screw(rod) are in the associated orifices of supporting bracket 11, can not move in the constraint that axially is subjected to step 59 and jump ring 58, only do and circumferentially to rotate, nut 57 is screwed on the spring adjusting screw(rod) 56, spring 55 1 ends are connected with nut 57, one end is connected with regulating wheel support 53, makes regulating wheel 54 be tight against conveyer belt 10 on big roller 6.
When fabric need be reeled, adjust the distance between axles of two big roller shafts 8 earlier, carry out local gap adjustment according to the coiling situation again, promptly the clearance adjustment mechanism in the gear unit of corresponding both sides is done suitable adjustment according to the thickness of fabric.At first adjust the clearance adjustment mechanism that contains mobile pinch roller combination, it is the right side clearance adjustment mechanism shown in Fig. 5, turn screw rod 21 makes it to move on the upper end pushing and pressing push rod 20, connecting rod 21 with on move, do to rotate in the same way around same pin joint M around rotating counterclockwise and promote gears 18 with the hinged fork 34 of connecting rod 21 by the pin on the gear 18 36 with the hinged pin joint M of supporting bracket 11, move down with the tooth bar 17 of its engagement, be shelved on and adjust the mobile pinch roller combination in the piece skewed slot 35 owing to be subjected to the constraint of guide finger on the pilot hole and connecting plate 42 on it, and can only be passed to the left by the inclined-plane on the skewed slot 45, the gap with the roller 15 in left side is reduced.Otherwise turn screw rod 21 makes it to move down, and under the effect of spring 37, gear revolution (clockwise rotating) moves on the tooth bar 17, adjust piece 17 with on move, mobile pinch roller combination 13 moves horizontally to the right, and the gap with the roller 15 in left side is increased.
After the clearance adjustment mechanism that contains the combination of mobile pinch roller was adjusted, visual adjustment situation was adjusted the clearance adjustment mechanism of a corresponding side again.The same reason, turn screw rod 21 makes it to move on the upper end pushing and pressing push rod 20, connecting rod 21 with on move, with the hinged fork 34 of connecting rod 21 around clockwise rotating with the hinged pin joint N of supporting bracket 11, and promote spring connecting rods 38 by the pin on the spring connecting rod 38 36 and do to rotate in the same way around same pin joint N, spring 32 is subjected to pulling force, under the effect of this pulling force, small gross draws support 33 to clockwise rotate around the pin joint O with supporting bracket 11, and the distance between axles of the little roller shaft of symmetrical both sides is reduced.Otherwise, turn screw rod 21 makes it to move down, under the effect of spring 37, promote 38 revolutions (promptly rotating counterclockwise) of spring connecting rod, spring 47 is compressed power, under the effect of this power, small gross draws support 33 to rotate counterclockwise around the pin joint O with supporting bracket 11, and the distance between axles of the little roller shaft of symmetrical both sides is increased.
Conveyer belt strainer 60 can prevent from skidding to occur between conveyer belt 10 and the big roller 6, turn spring adjusting screw(rod) 56, because screw rod 56 can not move axially, then nut 57 is relative to moving vertically.When nut 57 moves down, spring 55 tensions, regulating wheel support 53 is subjected to the rotating torque of spring 55, it is rotated around tension wheel shaft 52, regulating wheel 54 is tight against conveyer belt 10 on big roller 6, and the cornerite that makes conveyer belt 10 bags connect big roller 6 increases, and frictional force increases, reliable transmission is not prone to skidding.When needs reduced the tension force of conveyer belt 10, turn spring adjusting screw(rod) 56 made to move on the nut 57 to get final product.
The gear unit that is adopted in the invention described above device, be that the discrete one-tenth of large and small roller is some right, the every pair of big roller, little roller by one independently conveyer belt connect, transmission, can effectively prevent big roller of monolithic devices and little roller like this because axial dimension is big easily because of the problem of parallelism error sideslip.Simultaneously, in each gear unit, clearance adjustment mechanism is set, can carries out in time local easily the adjustment according to the fabric wrapping situation like this, adjust the efficient height, the more important thing is that fabric suffered traction force when reeling is even, make the quality of cross machine knitting fabric higher.