DE1485514A1 - Device for the transverse displacement of a tissue - Google Patents

Description

. 449,709.-J, -3736

9.79. Lo 21 ^ pril 1965

Southern Machine Co., IrIc JL / Γ » L ^ A-jJ ■ * · * J Chattanooga, Tennessee f ν. az. A. "" Hamburg, September 14, 1965 Device for the transverse displacement of a tissue.

In tufting machines, the base fabric is generally made on the Place where the knobs or tufts will be applied held tight. Clamping takes place via a pair of spiked rollers, over which the base fabric runs and from one in front of the movement direction of the base fabric, the other behind the processing point. over on and from movable needles, thread is inserted into the base fabric by a loop catcher to form a loop detected when the needle is in the bottom dead center, the loop cut open if necessary. The on these catfish in the ground tissue The knobs that have been introduced lie on rows running in the direction of movement of the base fabric. While such a manufactured Patterns for single-colored tufted products may be desirable. 1st in cases where two or more colored yarn is used the pattern is limited to longitudinally extending stripes, resulting in monotonous and unsightly patterns.

There has therefore been no lack of attempts to equip tufting machines with old facilities with the help of which it is possible to use others Patterns as such, which consist only of straight lines,

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to accomplish.

In a known device, the needles reciprocating in the vertical direction are also transverse to the direction of movement of the Base fabric can be displaced so that yarn also goes into the fabric other than the direction of movement of the tissue following! borrow can be introduced. Sin major disadvantage This device consists in the fact that every sideways movement of the needles corresponds to an integral multiple of a stitch width, that is the distance between two adjacent ones

Needles, because otherwise the needles after the puncture are not exactly aligned with the loop catchers in the base fabric, so that they do not capture the yarn and Can form loops. In addition, with a lateral displacement of the needles by more or less than a whole Multiples of a needle width the needles move up and down in levels. In which at least some are responsible for the leadership of the Touch the base fabric provided, horizontally extending fingers of the stationary arranged needle plates: it would both the needles and the needle plates will be damaged. Although it may appear theoretically possible, the needle carrier to move more or less than an integral multiple of a needle width, this is actually impossible as a result the vibrations occurring during operation, the wear of the parts and a slight curvature of some needles or the Needle plate fingers that inevitably occur during operation of the tufting machine. These appearances make it

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impossible to determine the exact path of each needle with certainty each puncture movement. So if the needles are in a different position than exactly in the middle of the spaces are arranged between adjacent fingers of the needle plates, the probability is that parts of the Machine damaged, very large.

In another known machine, the feed and tension in the base fabric are the rollers axially displaced, whereby the base fabric is laterally displaced with respect to the needles. The main disadvantage this arrangement is that the massive rollers can not be moved back and forth fast enough to be with the Tufting process to keep pace with normal speed ratios. So if such a device is used, the tufting machine must operate at an uneconomically slow speed. Try these machines Operating at a higher speed resulted in an unusually large amount of wear on cams and the like, as well as a far too frequent torsional breakage of machine parts. Such machines are therefore today only used for the production of chenille and other relatively light fabrics; for the manufacture of carpets and similar heavy tufted fabrics they cannot be used.

The invention is based on the object of providing a device for Manufacture of patterns in tufted fabrics when creating

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the displacement of knobs lying next to one another in each row is not limited to whole multiples of the stitch width is and with the help of which both tufted products with relatively heavy as well as with relatively light fabric are produced can be without a disproportionately large wear of the parts of the tufting machine occurs, and without that the working speed usual for tufting machines must be reduced. i) This task is performed with a device for the transverse displacement of a base fabric passing through a machine, preferably a tufting machine, relative to at least one needle which can be moved up and down and via which knobs can be applied to the base fabric, according to the invention solved that a thorn bar movable up and down and transversely to the direction of movement of the base fabric by controllable amounts is provided, the spines of which are directed essentially perpendicular to the plane of the base fabric when they are pulled out of the base fabric Needle penetrate the tissue. With the device according to the invention are therefore in phase opposition with the needle movement the thorns of a thorn bar imprinted into the base fabric, if the control is set accordingly, Laterally shifted by a certain amount, so that the base fabric is also shifted. The thorns remain during the next needle movement in the base fabric, in order to then be pulled out of the base fabric again. In this catfish can by simply shifting the thorn bar, the stitch field position of the needle can be shifted, but it can be done at

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cyclic displacement of the thorn bar also creates a pattern the orund tissue are applied. In such cases, the formation of the pattern does not depend on the spacing of the needles Loop catcher and the finger on the needle plate dependent " since their position remains unchanged relative to one another. Furthermore only needs a - relatively light- / thorn bar on the side to be moved, but not the entire device with the rollers over which the orunda is guided.

If the base fabric continues to move in the direction of passage during its lateral displacement, the thorn bar is moved along with it. In this case, a preferred embodiment of the invention is characterized in that the thorn bar is connected to an elastic member which is tensioned with the base fabric when the thorns have penetrated the orundum and thus when the thorn bar is moved and is relaxed after the thorns are pulled out of the base fabric and returns the thorn bar to its original position. An embodiment of this embodiment is characterized by a collapsible connecting rod provided with a compression spring, which is connected to the lifting rods holding the mandrel rod via universal joints and to the machine head via a console arranged in the direction of movement of the base fabric behind the mandrel rod. This measure ensures that on the one hand the base fabric remains deflected even during a continuous further movement, on the other hand the thorn bar again and again after being pulled out of the

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Base fabric in its initial position based on the longitudinal direction returns.

On the one hand, in a constructive embodiment of the invention, the Doroen rod is suspended from lifting rods to carry out the up and down movement, each of which is connected to a pivot arm via a universal joint, which is attached to a shaft that can be pivoted back and forth about its own axis through an adjustable angle With the main drive shaft being eccentrically connected to a cam disk which rotates in an eye of a connecting rod which drives a lever connected to the shaft via a bearing displaceable in a longitudinal slot of the lever. On the other hand, in a constructive embodiment of the invention, the thorn bar for performing the transverse movement is connected to an adjustable linkage via a universal joint, in which the size and duration of the displacement in the transverse direction can be controlled via a cam control, with an input shaft connected to the main drive shaft of the machine connected to the transmission, interchangeable ncknschsiben can be attached, in which the hockey ball engages "a 'on a swivel plate arranged neck, which is" old connected to a linkage.

Finally, in the embodiment of the invention on the machine head a, cloth presser attached, its height above the base fabric is adjustable. This presser prevents the needles or thorns from being pulled out of the base

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tissue this with moved up by attaching it to the needles or thorns get stuck.

With the aid of the device according to the invention it is possible using simple controls and machine elements of a unit size that corresponds to the spacing of the needles »to apply independent patterns to the base fabric, namely for the manufacture of both light and heavy products, especially tufted products.

An execution game for performing according to the invention is described below with reference to the drawings. In the drawing show:

Flg. 1 is a partial rear view of a tufting machine with a device according to the invention. Only the machine elements essential for the invention are involved shown;

Fig. 2 is a side view of the right machine foot of the Machine shown in Figure 1 with the cover partially broken away;

3 shows a side view of the left machine foot

the one in Flg. 1 machine shown with partial broken cover;

FIG. 4 shows a section along the section line 4-4 in FIG. 1; FIG. 5 shows a section along the section line 5-5 in FIG. 1; 6 shows a section along the section line 6-6 in FIG. 1.

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The tufting machine 10 has a right foot 12 and a right foot left foot 14 with a substantially horizontal between them running head 16 wear. In. feet 12 and 14 are some of the machine elements of the tufting machine, some of which are described below. In addition, one of them extends between the feet 12 and 14 worn flatbed, the upper surface of which in some figures is indicated by a dashed line 18. The essential function of the flatbed is to provide a base fabric in the Lead area in which yarn loops through the base fabric be pulled with the help of a plurality of vertically movable needles.

Machine elements are arranged within the head 16, over the a number from the side essentially along the vertical Centerline 20 of head 16 spaced vertically aligned needles are moved up and down. The needles I move on this way between a top dead center, in. Its lower ends are located above the upper surface of the flaoh bed, and a lower dead point in which their lower ends are below the flatbed. In the first layer, the needles are pulled out of the base fabric, in the second layer they pierce the base fabric and run yarn loops in positions where they come from below the sling catchers and knives arranged on the flatbed and, if so desired, cut through

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can. In the area of the needle path, the flat bed is slotted or otherwise provided with openings to allow the needles Allow back and forth movement. In the immediate vicinity of the one in front of the processing point in the direction of movement End 22 and behind the processing point the end 24 of the flat bed are rollers provided with thorns or similar, the fabric sensing devices are provided to continuously move the base fabric in the direction of arrow 26 (Pig. 2) guide through the machine.

The unit 28 now to be described, which moves the base fabric in the transverse direction to its direction of movement, is shown in FIG Embodiment shown as an independent machine part that can be installed and removed. This device 28 can but also as a unit connected to the rest of the machine 10 are executed.

In the in Pig. 1 illustrated rear view of the Tufting machine 10, the machine between the left and right foot is only partially shown so that the representation becomes clearer. This is possible because there are only one or more repetitions of the between the feet the lines A-A and B-B of Fig. 1 contained machine parts. The number of the same machine parts depends on the maximum width of the object to be produced on the machine away.

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The device 28 is driven by the main drive shaft 30 of the machine 10 «which extends from the right PuS 12 through the Head 16 extends to the left PuS 14, over one with the Input shaft 34 one by means of a bracket 37 on the left PuQ 14 of the machine attached reduction gears 36 connected chain drive 32 driven. On the output shaft 40 of the reduction gear 36, a cam disk is attached with a cam track 42, which in an axial plane the cam disk 38 is incorporated. The cam track 42 has an outer, radially towards, seen in the radial direction inside welsende surface 46 and one seen in the radial direction inner, radially outward welsende surface 48. Through the Surfaces 46 and 48 is bounded by the annular cam track 42, which has a constant width but a varying average Has radius. The formation of the cam track 42 determines the external pattern to be applied to the base fabric Noppens. As best seen in FIGS. 1 and 3, the cam 38 can be easily replaced by similar cams be replaced with different cam tracks to make different patterns. Located within the cam track 38 In the exemplary embodiment eight stages 50, it can easily have a larger or smaller number of identical stages Sequence can be chosen to increase or decrease the length of the repetitive duty cycle. The radians of each step 50 determines the longitudinal section on the base fabric which is provided with a pattern within this step becomes because the speed of the cam 38 is constant.

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Thus, when a stage 50 has twice radians of the following stage 50, the first stage is introduced twice the number of Garaechleifen compared to the introduced during the second stage number of loops of yarn in the Orundgewebe while; For example, two thread loop stitches can be made during the first stage and a single thread loop stitches during the second stage with each revolution of the cam disk 38. The amount of radial displacement of two successive stages 50 controls the amount of lateral displacement of the base fabric and thus the pattern of the knobs on the carpet as will be described later.

A cam 52 in the form of a cylindrical roller is in the Cam track 42 arranged in a 270 ° position «as can be seen from FIG. The cam 52 is rotatably mounted on a shaft 5 *. The shaft 54 is fastened to a pivot plate 56 approximately on its center line with the aid of a nut 57. the Plate 56 has a lower extension 58 · which is an inner cylindrical one Has a groove and is divided so that the plate is carried by a shaft 60 and, for example, by means of a cap screw 62 can be attached. The shaft 60 extends horizontally and is designed to rotate about its own longitudinal axis in a pair of journal bearings 64, 'which are attached to the console 37 are attached, stored. As a result, when rotated, the

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Cam 38 the plate 56 parallel to the plane of the drawing 1 pivoted back and forth about a point which coincides with the longitudinal axis of the shaft 60.

The plate 56 has a vertically extending slot 66 which is arranged at a distance from the nooke 52 in the direction of the left foot 14.

On the inwardly directed surface 70 of the left foot 14, two journal bearings 68 are arranged axially aligned with one another. In the journal bearings 68 a crankshaft 72 is rotatably mounted about its own longitudinal axis, which is horizontal extends in a direction parallel to the path of the base fabric through the machine 10. Close to the front end of the crankshaft 72 (which is actually the rear end since Figure 1 is a view from the rear) is a long one Crankshaft pivot arm 74 attached, e.g. by a forked Guide with a cylindrical slot and cap screws 76, as shown in FIG. The crankshaft lever arm 74 extends extends a considerable amount in the radial direction from the shaft 72 and has a longitudinal slot 78.

An elongated, rod-like connecting lever 80 with each an opening 82 at the ends is made both on the pivot plate and on the lever arm 74 by means of a connection 83 of cap screws, Bolts and bearings attached, one of which is

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through opening 84 and slot 66 and the other another opening 84 and slot 78 eratannt. the Amplitude of the sideways movement transmitted to the base tissue can be adjusted by changing the point of application of the connecting lever 80 along the slots 66 and 78 will. From the foregoing it follows that “with a rotation the cam 38 a swinging motion is transmitted to the connecting lever 80, a motion that is one in its Longitudinal reciprocating movement of the lever has the consequence, so that the lever arm 74 about the longitudinal axis of the shaft is pivoted, which results in a pivoting movement of the shaft 74 about its own longitudinal axis.

Near the end of shaft 72 which is closest to is located at the front of the machine 10, a shorter lever arm 86 than the lever arm 74 is attached, for example by means of a forked guide with a circular slot and a head screw 88, as best shown in FIG. Of the Lever arm 86 extends radially downward and has a vertical slot 90, the longitudinal axis of which is parallel to that of the shaft 72 runs. A rod 92 is attached in abutment to the lever arm 86, for example by a unit 94 of cap screw and Bolt attached to slot 90.

At the bottom 96 of the head 16 are near the back a variety of axially aligned journal bearings 98 »

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e.g. by head screws 100. A long wave 102 is held in the bearings 98, runs below the head l6 and penetrates through suitable openings in the right and left feet 12 and 14, where they are held in flange bearings 104, 106 attached to the inside of the inner walls 104, 110 of the feet 12, 14. As from the Flg. 1, 2 and 3, extends the shaft 102 extends slightly beyond the flange bearings 104 and 106, so that a drive lever 112 arranged in each foot can be connected to it, which drives part of the vertical reciprocation causing mechanism

The mechanism for the vertical reciprocation will from the main drive shaft 50 of the machine 10 via two identical ones eccentrically arranged cam disks 114 driven, which are located in substantially circular eyes II6 aa upper end of the Rotate connecting rods 118. The cams 114 are fixed connected to the shaft 50, the outer periphery of the cams slides in a rotary motion on the inner surface of the eyes II6 the Connecting rod 118.

The rotation of the shaft 30 consequently has an Iw substantially in vertical swing motion of the connecting rods 118 result. The lower ends of the rods 118 are e.g. via a pin, a cap screw, a groove and a Bearing 120 is fastened in the drive levers 112 by longitudinal sockets 122 running in the radial direction. Through this arrangement generates vertical oscillation of the connecting rods 118

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a pivoting movement of the light 102, i.e. a reciprocating movement Rotational movement of the shaft 102 do its own longitudinal axis.

At several points along the shaft 102, a number is divided between the feet 12 and 14 on the journal bearings 98 attached by pivot arms 124 so that they are horizontal extend into the immediate vicinity of the plane in which the Needles are moved up and down. The plane of needle movement essentially coincides with the plane through the vertical Center line of the head 16 together.

With the end of the pivot arm 124 opposite the shaft 102, lifting rods 128 are adjustable via universal joints 126 Long connected. Each lifting rod has an upper, rod-like and externally threaded portion as well as a lower, sleeve-like one. and with an internal thread provided part. By screwing these two parts inside each other, the lifting rod 128 can be adjusted in its length and thus its height with respect to the base fabric and

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the flatbed can be adjusted. '

Each lifting rod 128 has an opening IJO running in the horizontal direction at the lower end of the sleeve-like part. The longitudinal axis of each opening IJO is substantially parallel to the vertical plane in which the pivot arms 124 pivoted when the shaft 102 is reciprocated. -

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£ i ⁿ -) h .zt \ Vt running rod not provided with Dor * .η. 132, which runs parallel to the shaft 102 and is slightly shorter than the head IjS, is connected to the lifting rods 128 by pivot pins (He are located in openings in rod 132 and openings IJO in lifting rods 128. Xn essentially via the At least one row (two rows are shown in the embodiment) of vertically downwardly directed mandrels 136 are attached to the entire length of the rod 132. The lengths of the rods 128 and the mandrels I36 are chosen so that with a vertical reciprocating movement of the lifting rods 128 the thorns alternately engage in the carpet, at least in its orundum, and are withdrawn from it again.

The transverse movement caused by the cam disk 38 is transmitted to the mandrel bar 132 by connecting the other End of the rod 92, the first end of which is connected to the pivots, with the thorn rod 132 via a nearby of the left foot 14 arranged universal joint I38 over-

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wear. According to the invention, the one lifting the thorn bar Mechanism and the mechanism causing the axial movement in time through the angular arrangement of the reciprocating Parts and orientation of the steps on the cam 50 are coordinated so that the thorns enter the orundic tissue out of phase with the needles by about 180 °? The who Side shift inducing mechanism pushes the thorn bar and thorns aside just before the needles

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Step into the base fabric. The thorns remain in the Basic fabric until the needles have reached their lowest point «Then the thorns emerge from the basic fabric pulled out.

Since the base fabric is continuously processed by the sewing machine 10 runs and the mandrels, as described above, during the greater part of a working cycle within the The base fabric is located, the thorns and the thorn bar are carried along a little in the direction of movement by the orundic fabric. Means are therefore provided for returning the thorns and the rod of thorns to the point where the thorns come from the next Work process to penetrate the orund tissue · In the in Figs. 1 and 5 shown embodiment this means of a multitude of compressible «»! Connecting rods 140, at the ends of which ühlversalgelenke 142, are provided. The universal joints 144 at the lower ends are connected to the lower part of the lift bars 128; the upper universal joints 142 are attached to brackets 146, each of which is attached to the underside of the head 16 and extends backwards and downwards from the head.

Between its end portions 148, each connection has · »·. . rod 140 has a tubular part 150 in which a helical spring or a similar, the movement-absorbing element is arranged. The end parts 148, at least one from the inside, butts against the inde of the spring and, with reference to the tubular

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shaped Tell 150 with sliding bearing. If consequently the base fabric the thorns and the thorns rod In the direction of the arrow moves, the connecting rods 140 pull as a result of Compression of the feathers together. After pulling out the Thorns from the oral tissue relax the feathers and push the thorn bar and thorns in the upstream direction of travel back to the point where they will be used in the next working cycle to be reintroduced into the oral tissue. The universal joints 142 and 144 ensure that the operation the connecting rods are not affected by the vertical and lateral to-and-fro movement and the displacement of the Thorn bar and the associated mechanism are hindered.

To prevent the base fabric from becoming detached from the flatbed lifts off when the thorns and / or the needles piercing the thread are withdrawn from the base fabric »Is a presser 152 provided. The presser foot 152 consists of a substantially horizontally extending rod which la essential is arranged parallel to and in the same working area as the thorn bar. The presser foot 152 is narrow arranged adjacent to the needle bar and the path of the needles so that its lower surface rests lightly on the base fabric or is just above the base fabric. The attachment for the presser foot 152 consists of a large number of Xonsoles 154, which are located on the underside of the head 16

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is arranged scattered between the consoles for the connecting rods that can be joined together. Each console has an upper part 156 and a lower till I58. The upper part is angled and in its horizontally extending part has a slot SLSO ₉ through which the console is attached to the head by a head screw I62. Each slot 160 is oriented in such a way that the distance between the press of the fabric and the position of the needles can be increased or decreased. The upper link 156 and the lower link 158 of each console are connected to one another by a 16% slotted arrangement which eliminates the need to adjust the vertical distance between the bottom of the presser and the top of the fluff bed, thereby reducing the thickness of the base fabric used to be taken into account.

When the base fabric is fed through the machine, between the punctures of the needles the basic fabric in the immediate vicinity Sucked away sideways near the Elnatichweg, accordingly a «pre-determined pattern, which about the Cam disk 38 is entered 1st, whereby approximately zagzagforaige Rows of yarn loops are stitched into the base fabric. These Zlckzaokrelhen could be similar, e.g. with one Stitch to the right and one to the left, or look rude- ' tnäfilg, s.B. half a stitch to the left, three stitches back, to the right; four stitches to the left, half a stitch to the right, etc., υ * to create a randomly appearing pattern. The random appearance of the mops can be emphasized

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are »if the device according to the invention together with Usual facilities are used that enable ea » also to change the height of the pimples, or, if so, colored yarn is used.

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Claims (1)

(o.s. 449,709 - J- prio April 21 Λ <■) & £) Southern Machine Co. » Inc. - - Chattanooga »Tennessee / V.St .A. 1485514 Hamburg, September 14, 1965 Patent claims: 1. Device for the transverse displacement of a machine, preferably a tufting machine, continuous base fabric relative to at least one up and down movable needle, via which knobs can be applied to the base fabric, characterized in that a and a mandrel bar (132) which can be moved by controllable amounts from and transversely to the direction of movement of the base fabric 1st, whose spines (I36), which are directed essentially perpendicular to the plane of the base tissue, come from the base tissue With the needle pulled out, penetrate the base tissue. 2. Apparatus according to claim 1 for producing recurring patterns on the base fabric, characterized in that the Dome rod (122) can be cyclically displaced by predetermined amounts is. .5. Device according to claim 1 or 2, characterized! that the thorn bar (1J2) to carry out the up and down movement is suspended from lifting bars (128), the over One universal joint (126) each with one swivel arm (124) connected at an adjustable angle BATH ORIGINAL 209813/0192 H855H shaft (102) pivotable to and fro about its own axis is attached. . 4. Apparatus according to claim 3 * clfidurch characterized in that the Shaft (102) via one with the main drive shaft (30) of the Machine connected eccentric drive is pivotable. 5. Apparatus according to claim 4, characterized in that with the main drive shaft (JO) eccentrically a cam disc (ll4) connected, which is located in one eye of a connecting rod (118) which rotates a lever (112) connected to the shaft (102) via a longitudinal slot (122) of the Lever (112) drives the displaceable bearing (120). 6. Apparatus according to claim 1 or 2, characterized in that the thorn bar. (132) to carry out the transverse movement Via a universal joint (I38) with an adjustable Linkage (92, 86, 72, 74, 80) is connected, in which the size and duration of the displacement in the transverse direction via a cam control controllable 1st. 7. Apparatus according to claim 6, characterized in that on the output shaft (40) an input side (34) with the Main drive shaft (30) of the machine connected gear interchangeable cam disks (38) can be placed in the Cam track (42) arranged on a pivot plate (56). Cam (52) engages with the linkage (80,74,72,86,92) connected 1st. BATH 209813/0192 U855U 8. The device according to at least one of the preceding claims for a machine with a during the Machining;! Process continuously by the sewing machine much-moved base fabric, characterized in that the thorn bar (132) connected to an elastic QIied is that when thorns (136) have penetrated into the base fabric and thus when the thorn bar (132) is moved is stretched with the base fabric and after pulling it out the thorns (I36) is relaxed from the base tissue and returns the thorn bar (132) to its original position. 9. Apparatus according to claim 8, characterized by a collapsible and old provided a compression spring Connecting rod (1 * 0), which are connected via universal joints (142 with the lifting rods (128) holding the thorn rod (132) and behind in the direction of movement of the base fabric the thorn bar (I32) arranged console (146) with the Naschlnenkopf (16) connected 1st. 10. Device according to at least one of the preceding claims, characterized in that da3 on the machine head (l6) a presser foot (152) is attached, the height of which is above the base fabric is adjustable. dö: cm BATH 209813/0192