DE1535769B1 - Method and device for mechanical weaving and knotting of pile fabrics - Google Patents

Description

The invention relates to the method and device of the sheet stopper, the knotted pile threads For mechanical weaving and knotting, the Pile fabrics, especially carpets, in which knots are reached in the base fabric. This is because of this by means of a large number of pairs, each of them is made possible to work together during the movement of the web Tying pliers each load the ends 5 to the stop edge this through a Nachlassder for a whole row of knots necessary pile movement on the ones withdrawn from the warp threads threads through the crossed warp threads - knotting tongs moved towards the sley leads, introduces at least one weft thread and is. This makes the tying pliers without beating through a reed. own evasive movement at the time of the leaf

There are already mechanical knotting devices io stop from the range of motion of the sley known, in which each individual knot brought out in and of the reed. Through this and a large number of repeats across the working width as a result of the process carried out during the knotting be knotted. For this purpose, the warp thread insertion of the weft thread will be a continuous part, in which the knotting process is to take place, licher, quiet running of the machine and a high lifted out of the normal chain position and allows 15 revolutions.

after tying in the pile thread back again - in order to leave an over-tensioning of the warp when knotting. After the individual rapper threads have been knotted by the transverse movements of the knotting pliers th associated number of nodes will avoid all nodes, which will unite each in the weft direction Row struck by a leaf stop. pushed warp thread section by means of a minde-bei such knotting devices, in which a 20 least two by eccentric cams and levers Loom for the production of the basic fabric with the frame-controlled string trees around an ent-knotting element sustaining, decreased by a speaking amount after each connection and at the same time two warp threads displaced knotting carriage provided the backrest blocked, so that a withdrawal is, after a row is completely knotted, the reduced warp length becomes through the backrest the loom is operated by a change gear and prevented. Instead, you can use two the binding shot entered. This mode of operation is provided with elastic braking but very time-consuming and also results in pile warp beams being worked, fabrics in which the knots in the base fabric are tied. The two rows of tying pliers are advantageous

Sit relatively loosely. associated pincer attached, which is in Schußin German Patent 806 360 is also 30 direction relative to each other. the a way of working is described, according to which one can move the clamps against each other and that a knotting operation by means of opening in pairs and "closing the knotting pliers themselves" interacting knotting tongs the pile threads by means of appropriately assigned levers from curve die crossed warp compartments and controlled in disks. The contact pressure of the knots subsequent weaving operation a weft pliers tips for grasping and holding the pile thread brings in and hits. Threading according to this method can be done by pretensioning a spring device Although all knots are set one over the entire device, so that the pile threads too Working width of the row of nodes can be held securely at the same time when next to each other are knotted, but knotting and yarns of different strengths are used. Weaving is carried out in chronologically separated operations. 40 The filled with the pre-cut pile threads and only a limited working speed is. This is all the more true as the knotted transport chains or by example tongs before beating the weft thread from wise by means of a crank slider generated slide Movement area of the reed moved out, movement brought up to the knotting point, Need to become. 45 To achieve a perfect edge of the pile

The object of the invention is now to process fabric, the inserted weft thread can be and devices for mechanical weaving and moderately taut each by a tensioning device To create the knotting of pile fabrics, which are laid before the reed is attached to the selvedge Avoid previous disadvantages, introducing the impact.

Weft thread during the drawing in of the pile threads 50 Since the tight fit of the knotted pile threads is only possible enable and is achieved without any special evasive movement by beating the weft thread, of the knotting tongs emerging from the warp threads, it is particularly important if they are missing or unused Allow the reed to be attached. torn weft thread by means of a weft thread

This task is achieved by the guard device in claim 1, an immediate shutdown of the given method and triggered by the device according to 55 machine before the tying pliers the Claim 3 solved. Let go of further designs of the Er pile threads, invention are described in the subclaims. The drawings illustrate some of the

A major advantage of the invention is embodiments of the invention.

The fact that the knotting and weaving are carried out at the same time is shown in FIG. 1 to 5 shown, and knotting tongs from the warp threads on the knotting tongs, although in view of the front shed a, the back shed b, is moved past towards the reed. The tissue / and the forceps 1, 2; the reed before the introduction of the tying tongs F i g. 2 shows a section along line x ~ x of

in the warp thread gaps for optimal guidance of FIG. 3;

Warp threads brought close to the tongs 65 F i g. 6 and 7 show an embodiment of FIG and immediately after their entry into the warp thread knotting tongs and sley, which makes it possible to choose for weft entry in the striking position rend the weft entry simultaneously moves the knot will. As the tying pliers also perform during operation; in

3 4

Fig. 8 to 11 is the mode of operation of the goods - it says that also during the sheet strike

regulators with the additional goods discount - the pile threads according to F i g. 7 are kept taut,

movement shown; whereby these have a particularly firm fit

Fig. 12 shows the warp control for the fabrics obtained. Only after the shot was fired at the

Pliers lateral movement, furthermore the blocking of the 5 goods edge struck and the compartment traversing

Streichbaumes; follows, the tying tongs open again and

Fig. 13 shows an embodiment of the movement letting go of the pile thread 3.

of the knotting pliers as well as of opening and closing

the same; a movement in the direction of the arrow into the goods (Fig. 6)

F i g. 14 is the split pliers drawer that the io. As a result, the relatively heavy shop

Pliers lateral movement enables only a slight stroke movement to be carried out in the section of the intestine,

posed; whereby a noticeable increase in the number of tours

15 shows a view of the control of the Zan. The periodic discount will be

mutual movement; by an additional device of the goods regulator

FIG. 16 shows the exemplary embodiment of a 15 obtained in accordance with FIGS. 8 to 11. In Figs. 8 and 10 is

Pliers unit; a side elevation of this regulator is shown. F i g. 9

Fig. 17 illustrates an apparatus which shows the one view of the regulator gear. the

Pile thread carrier for removing the pile thread to the regulator circuit for the goods take-off is through

Warp thread brings in (position I) and after grabbing cam disk 9, which is on the regulator main shaft

the threads are arranged again in position II 20 10 by the filling tongs. The transfer of the

swings back; in the switching stroke takes place via the

18 and 19 are two different weft-mounted roller levers 11 and the roller 12. The draw-thread tensioners shown; rod 14 provides the connection with the coupling 15

F i g. 20 shows a weft monitor. here, the lifting movement in the coupled state

As shown in FIG. 1 can be seen. step two rows 25 transmits to the regulator gear. The drive of the knotting tongs 1, 2, which takes place by one thread division to the goods take-off roller 16 (FIG fold α of the vertically arranged warp thread. The goods tree wheel 21 is in engagement with this. The after a lateral shift of the lower bearing of the change gear bolt 2 takes place in the row by a double warp thread division to the left, 30 rocker arm 23, which initially no longer pivots in change gear 20 around point 24 when the number of teeth changes during the pliers tips. As the tray penetrate. After executing this side through the coupling 15 only during the regulator movement, the path of the pliers is continued, and switching a connection between the above bediese also occur through the rear compartment b. Then the switching mechanism and the pull rod 14 made the lower row of pliers 2 a second side 35 is provided, but otherwise the movement on the tree, namely by half the amount after the prevailing tension on the ratchet wheel 25, the right back, whereby two pliers each according to the pawl 26 and the pull rod 31 rests, is inventive F i g. 2 are exactly one below the other and according to the cam 27, an exact warp thread a, b is wrapped around it. From Fig. 3 control of the easing movement of the goods is possible, it can be seen that in this position the one 40 The ratchet wheel 25 is with the switching shaft 28, on knotting pile thread 3 at both ends of the one fixed and one loose coupling half Pliers is grasped. The actual knotting process 15 is arranged, firmly connected. The movement generated by the cam disk 27 during the retraction takes place via the lever 29, the roller 30 and the pull rod 31 via the lever 29, the roller 30 and the pull rod 31 in the starting position according to FIG. 4, the movement shown in FIG. 5 visible nodes formed 45 shift lever 32 with pawl 26 is transmitted, bewird. In Fig. 5 was a section through a part thus acts the reduction stroke.

the warp with the pile thread knotted in. Another advantage of this invention is shown. In order, according to the above-described arrangement, that the size of the reduction stroke by method to be able to work, the hand of the placement of the pivot point 33 on the lever 29 are changed F i g. 6 to 20 explained devices are necessary. 50 can be. Since for the hinge point 34 an am

In Fig. 6 is a side elevation of the main elements of the machine frame, there is a fixed stop 35, a knotting device according to the present invention can be represented by raising or lowering the point 33. The sley 5 with the weaving the trailing movement of the goods are changed, sheet 6 is located during the passage of the While lifting the pivot point 33 a pliers 1, 2 through the shed a, b for better 55 reduction occurs, in that the role 30 does not thread in the closest possible proximity of the pliers and is applied to the lowest point of the cam disk 27, as soon as these have stepped right through the compartment - but when the hinge point 34 rests on it, to insert the weft into the stop 35 shown lifts off from this, is by lowering the striking position. While the knotting pliers now adjust the pivot point of the maximum stroke,
The pile threads presented in the pile thread carrier 4 can be adjusted very practically by using the explanations relating to FIG. 1 to 5 take handwheel 36 over pinion 37 and the rack and tie it into the warp, 38 takes place from the operator's station. 11 shows the weft insertion taking place at the same time. Here, a diagram slides from which the movements of the shuttle 7 on the blade teeth of the woven goods during the manufacturing process can be seen blade 6, which is with the sley body 5 and 65 (s = path, t = time),
the loading arm 8 is firmly connected. As already described, for the knotting

Once the weft has been inserted, this process requires lateral movements of the pliers in order to

beat. A particular advantage of the invention is the pile thread 3 according to FIG. 1 to 5 in the warp

5 6

to tie in. Since with these lateral movements of the cam via the tie rod 76 on the lower lower row of pliers to the upper also a Um- control cam 78, which takes place on its lever arm steering the warp thread, it is necessary that the point 79 is hinged. The further stroke, the warp threads of the front compartment α and the rear transfer to the pliers are loosened separately via the lever compartment b. This loosening 5 80 with the roller on the common control shaft 81 takes place according to the invention by a device. From this control shaft, the upper dimensions F i g. 12. The warp threads a, b are, from the warp leg of the upper nippers 1 via the lever 82, the tree 63 'coming, via the backrest 53 to each with the control shaft 81 is firmly connected. the Zugeinen stroke bars 39, 40 out. Each of these rods 83 and the double lever 84 moves, whereby the stroking bar has a cam-controlled reduction io the contact pressure in the closed state of the movement, so that, for. B. the front compartment α is adjustable by pliers on the lower pull rod 85. lifting of the stroking bar 39 can be loosened, the movement of the lower one takes place in a similar manner while the rear compartment b remains under tension under unchanged legs of the lower nippers 2 from the lever 86. The control of the upper stroke- the pull rod 87, the double lift! 88 and the lower latch 39 is carried out by the cam 41, via 15 pull rod 89, which also has a length adjustment of the lever 42 with the roller 43, the pull rod 44.

and the bearing lever 45, which is mounted in the pivot point 46 to the lateral displacement already described. The control of the lower stroking bar gene from the lower row of tongs 2 to the upper row 1 40 is carried out by the cam 47 via which, according to the invention, a two-lever 48 with the roller 49, the pull rod 50 and the 20-part tong drawer, as shown in Fig 14, he bearing lever 51, which swings out about point 52, is shown. conducive. The first or upper tong drawer 90, to prevent the brackets 68 from being attached to the bars 39 on which the upper tongs 1 are mounted, is firmly connected to the 40 left warp length from the bar 53. The lower or second is withdrawn, a blockage is provided, pliers loader 91, on which the lower pincer 2 is mounted, which works as follows: 25, has a connection to the upper pincer-The arm provided with a toothed segment 54 α load 90, which under more precisely Guide a lateral of the backrest lever 54 is on its teeth allows displacement. A description of this with the pinion 55, which is firmly attached to the side movement on the shaft 56, takes place on hand F i g. 15, in which this is arranged, engaged. Also firmly on the shaft end of the pliers loader, on which the control members 56 are attached, the brake drum 57 is attached. The 30 are located in the view is shown. The control blocking of the shaft is lever 92 through the cam plate is mounted at its pivot point 93 in the fixed 58 via the roller lever 59 with the roller 60 attached to pliers drawer 90. The movable pliers drawer steers and by the leverage of the double lever 91 carries a bolt with a 61 at point 94, through which the brake band 62 is tightened, cam roller 95. As soon as a vertical movement is now produced. So it is the force P that z. B. 35 of the hinged tie rod 96 takes place, the Verdurch is generated by a tension spring, temporarily blocked on the shift of the lower part 91 according to the tooth segment of the backrest lever until the curve of the link of the control lever 92 instead, the knotting process is completed. Both the upper row of tongs 1 on the tong drawer Another major element of the invention is the 90 and the lower row 2 on part 91, control of the tong movement, as well as that of the 40 in the present invention, consists of greater closing and opening of the tongs. The pliers, number of tying pliers units. Such a system according to FIG. 6 and 7 of point c, in the tweezer unit, for example an upper one, which the pile threads are gripped, to the tong unit, is shown in FIG. Move point d towards, get their movement while the tong lower legs 1 and the impulses from the cam disks 63 and 64 in 45 screw surface of the unit, on which this is shown in FIG. 13. In FIG is assembled, from one piece herwegungen the pliers drawer as well as for the closing were made, the thighs 97 individual parts, and opening of the pliers are shown. The actual ones that are stored next to one another on the axle 98. Movement of the pliers tips is achieved by addition. Each plier upper leg has a pressure stamp 100 articulated in the joint of a horizontal and vertical movement point 99, which achieves the component. The horizontal movements are guided by the common guide piece 101. Two of the controlled by the cam 63 and by juxtaposed punches can expediently transfer the link 65 with the roller 66 via the pull rod arranged at a suitable angle to each other 67 to the support arm 68. The transmission are, whereby a very small division possible vertical movements, which is borrowed from the cam 55.

is generated by the compression spring 102 at the fulcrum, which is pushed directly onto 100 by the lever 70 with the roller 71 supported by the pressure ram, the support arm 68, which is articulated up at point 72, and the bushing 103 under it, is supported by the adjusting screw slight bias, is hung. Both movement components are time-coordinated, whereby when opening and closing the pliers borrowed so that their sum 60 through the lifting movement of the pull rod 85, which is connected to the above-described pliers path from point c to guide piece 101, an exact point d and back results. The closing and opening entrainment is guaranteed. The setting of these of the two rows of pliers 1, 2 to grasp the bias is done by means of the adjusting screw 104, pile thread at point c and releasing the while the stamp is carried out 65 on the upper edge of the guide piece by applying the pin 105 after knotting in point d 101 at the same time from a cam 73. limit receives. The contact pressure after closing By means of the lever 74 with the roller 75, the same forceps, which for secure gripping and holding if it is mounted in the pivot point 69, the stroke that the pile thread is required is. is through another

Overpressure of the compression springs 102 by the tensile shafts 126, 127 and the finished knotted fabric 128 and push rod 85, which through control linkage and draws. The one from the fabric edge from point 129 Lever, as already described, is moved, the weft thread running to the shuttle 130 becomes enough. Here, the pin 105 is raised by the amount due to the bracket 131 when the sley is moved the overpressure of its contact edge on part 5 124 in position 124 'is pulled taut in the direction of the arrow, 101 from. An adjustment of the strength of the contact pressure by the fact that the bracket about its pivot point 132 in pressure is according to the invention by shorter or position 13Γ swings out and at his Be-Längerstellen of the tie rods 85 in the adjusting piece 106 contact point with the rifleman track Each nipper unit is possible separately, which means that jammed weft threads are dragged along. For a ge-manufacturing and assembly inaccuracies balanced io know contact pressure is provided by the tension spring 133, which is im can be. Due to the individual suspension, each point 134 on the short lever arm of the bracket 131 can be moved Pliers leg according to the above definition. The point of contact of the bracket with the writing is even with very different thicknesses the pile thread presented next to one another is provided.

secure gripping and holding of all threads guaranteed. Fig. 19 shows another embodiment of a weft. The view of a nipper unit, which thread tensioner. The desired tension of each the pliers are screwed on, is worn right in the weft is here by formation F i g. 15 to be seen. a loop 135, which by means of a finger 136 in

The feeding of the prepared pieces of pile thread pulls the shop web, which is slit at this point, into the area of the tying pliers after it is 20. The weft thread that has passed through the shed can also be tensioned in another way, according to the invention, by means of a weft thread shown in FIG. 17 shown can be achieved, so z. B. by a contactor swivel arm 107. The two drawn end running direction directed air flow of a fan, were for the swivel movement are marked with I and II thread tensioner according to the above-described Ver. Driving from an endless transport chain 25 can be arranged on one side of the fabric 108 via deflection wheels 109, 110 and on both sides.
The weft insertion is monitored and in position 112 'by a guide outside the knotting width by a pair of electro jaws 113 and in pivot arm mechanically acting device, which in addition to position I during the removal of the pile thread 30 fabric edge between the fabric and the weft thread by the pliers 1, 2. The opening tensioner either on one side or on both and closing the guide jaws 113, which can be arranged with sides of the goods.
Pinions are connected to each other in a There are similar devices for normal flat handle, is known by the tooth segment 114 on looms with a horizontal chain course, the tie rod 115 and the leaf spring 116 through 35 the z. B. as a lateral fork-end guard with mecha-relative movements of points 117, 118 and 119 tonic or electromechanical shutdown caused. The leaf spring pivots here.

116 about its pivot point 120, which is fixed. In FIG. 20, according to the invention, a weft movement was made of the swivel arm from position I in guard device for predominantly vertical chain position II takes place by shifting these three 4c course shown.

Points to each other an opening and with opposite- The bearing bracket 137 is with the shutter plate 138, set movement of the swivel arm a closing which takes place in the extension to the reed 6 (Fig. 6) of the guide jaws 113, whereby is located by length tied together. The strength of the contact pressure pivot point 139 of the needle holder 140 is mounted in the bearing angle in the setting of the pull rod 121, which can also be adjusted by the pressure of the jaws in the closed state on the double lever 141 via its lever arm 142. When these tie rods are made longer, the roller 143 is controlled. The control is achieved by reducing the contact pressure by means of a fixed stop 144 which, in the machine trend, is mounted on the same enlarged frame 145 for a shorter setting, as follows:
is, whereby a deflection of the leaf spring 116 takes place when the shuttle 7 passes through the. After a pile thread carrier has been emptied in the lowest position of the shed at point 112'50, the transport is transported further, in which the roller 146 port chain against the stop 144 by a pitch t in the direction of the arrow. is applied (position 146 '), a lifting of the sensor

In order to be able to work the needle method according to the knotting needle 147 described above via the double lever 141, a device holder 140, the lever arm 142 and the roller 143 are required which, according to the invention, take place after every position 147 '. After the shuttle has passed the shed tied-in pile thread row into the shed a, b and the sley is raised and the inserted weft thread siraffets. The here approaching fabric edge is lowered by the spring 148 over the weft material used has a length- the lever 141, the feeler needle 147, to the storage, which is only brought up to the weft thread 148 'when the reed hits the weft and, if this is in front of the fabric edge due to the pressure occurring is free-handed, held in position 147. Missing is given however. For this it is necessary that the weft thread, so the feeler needle falls into the inserted weft thread, which is still loosely in the shed position 147 "through and the lever arm 142 pushes, is tensioned to a certain extent with its stop plate the pin of the Two embodiments of a weft thread tensioning switch 149, which closes a control circuit, are shown in Fig. 18 and 19. In 65, which shows the shutdown of the knotting machine or Fig. 18, the two frame walls 122 are schematically triggered, a signaling device 123 as well as a sley body 124. Furthermore, the prevailing weft thread tension, the tensile force were schematically a warp beam 125, two weaves of the spring 148 in the slot of the spring bolt 150 so

set so that no loops are drawn in that would result in incorrect positioning. A precise setting of the sensor needle lift in position 147 ' takes place on the adjusting screw 151 by raising or lowering the stop 144. The adjusting screw 151 is fastened in the frame 145.

Furthermore, it would be conceivable, for example, that the weft insertion instead of by means of a shuttle takes place by a gripper mechanism or that the movement of the knotting tongs according to FIG. 13 not is generated by cam control, but receives hydraulic control.

Claims (8)

Patent claims: 1. Process for mechanical weaving and knotting of pile fabrics, especially carpets, in which one by means of a plurality of paired knotting pliers each the ends of the for one entire row of knots passes the necessary pile threads through the crossed warp threads, introduces at least one weft thread and bites through a reed, characterized in that that both tying pliers of each pair of pliers are attached from one side of the chain Crossing the warp threads through these leads with each pair of pliers the two ends the pile threads fed in from the other side of the chain and through the crossed ones Warp threads pulls through, introduces the weft thread during this movement, after If the tongs emerge from the warp threads, the fabric passes the tongs onto the The reed is moved to and the ends of the pile threads are banged up with the knotting tongs holds on. 2. The method according to claim 1, characterized in that the knotting pliers one Pair of pliers leads through the first warp shed on both sides of an associated warp thread, then one pair of knotting pliers in the transverse direction with crossing displacement of the associated Of the warp thread past the other tongs, then both tongs on both sides an assigned warp thread through the second warp shed and finally through a Lateral shift aligns both knotting pliers one behind the other in the direction of the warp. 3. Carpet knotting machine for carrying out the method according to claim 1 and 2 with each in a row arranged transversely to the chain, mutually cooperating in pairs first and second tweezers, these associated feed devices for pre-cut pile thread, a sley provided with a reed, devices for guiding the chain and for inserting the weft as well as control devices for the tongs, the sley and the weft insertion devices, characterized by a first tong bar (90) which is arranged on one side of the warp and extends transversely to this with a plurality of first tongs (1) arranged next to one another in a row, a second tong drawer (91) attached to the first tong drawer (90) so as to be displaceable transversely to the chain, with a multiplicity of second tying tongs (2) arranged thereon in a corresponding row, control devices (63 to 71) for the common movement of all tying tongs (1, 2) between a starting position outside the warp thread, an intermediate position guided only through the rear compartment (1) and a take-up position guided through both warp compartments (a, b) , devices (92 to 96) for transverse displacement of the second tong drawer (91) relative to the first tong drawer (90), actuating devices (73 to 89) for joint opening and closing of all tongs (1, 2), devices for moving the sley (5) and the reed (6) during the movement of the tongs (1, 2) through a weft insertion position and with the fabric regulator ( 9 to 24) cooperating release devices (25 to 28) for temporarily moving the fabric past the retracted knotting tongs (1, 2) towards the reed (6). 4. Carpet knotting machine according to claim 3, characterized in that the stroke size of the releasing movement of the releasing device (25 to 28) is adjustable. 5. Carpet knotting machine according to claim 3, characterized by slackening devices (39 to 52) for the temporary slackening of the warp thread parts displaced in the transverse direction when the warp thread crosses through the transverse movement of the knotting tongs (1, 2) and braking devices (54 to 62) for temporarily blocking the oscillating movement of the Streichbaumes (53) during the knotting process. 6. Carpet knotting machine according to claim 3, characterized in that each knotting tongs (1,2) has a fixed limb and an axis (98) parallel to the tong drawer (90, 91) movable limb (97), each of which is articulated by one The punch (100) is connected to a lifting device (85, 101, 106) that actuates all the knotting pliers (1, 2) together and is arranged on the punch (100) and is adjustable by means of an adjusting device (104) and has a spring (102) that can be individually adjusted to the pile thread thickness Closing pressure is pressed against the fixed leg. 7. Carpet knotting machine according to claim 3, characterized by a per se known, on deflection wheels (109,110,111) revolving endless transport chain (108) for bringing up pile thread carriers (112) which run parallel to the weft direction and are charged with pre-cut pile thread and a swivel arm (107) for temporary pivoting the transport chain (108) with a pile thread carrier (112) in the grip area of the knotting tongs (1, 2) passed through the warp compartments (a, b). 8. Carpet knotting machine according to claim 3, characterized by a pivotably mounted spring-loaded bracket (131) or a finger (136) movable transversely to the weft direction for tensioning the inserted weft thread before the reed hits the reed. For this purpose 4 sheets of drawings