EP3795730A1 - Métier à tricoter à chaîne destiné à la fabrication de produits tricotés à chaîne - Google Patents

Métier à tricoter à chaîne destiné à la fabrication de produits tricotés à chaîne Download PDF

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Publication number
EP3795730A1
EP3795730A1 EP20181084.3A EP20181084A EP3795730A1 EP 3795730 A1 EP3795730 A1 EP 3795730A1 EP 20181084 A EP20181084 A EP 20181084A EP 3795730 A1 EP3795730 A1 EP 3795730A1
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EP
European Patent Office
Prior art keywords
machine
warp knitting
warp
knitting machine
movement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20181084.3A
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German (de)
English (en)
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EP3795730B1 (fr
Inventor
Torsten Michael BUTZ
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Groz Beckert KG
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Groz Beckert KG
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Filing date
Publication date
Application filed by Groz Beckert KG filed Critical Groz Beckert KG
Priority to JP2022517919A priority Critical patent/JP2022548383A/ja
Priority to PCT/EP2020/075862 priority patent/WO2021053014A1/fr
Priority to CN202080065545.4A priority patent/CN114375354A/zh
Priority to CN202080065547.3A priority patent/CN114364833B/zh
Priority to JP2022517920A priority patent/JP7529772B2/ja
Priority to PCT/EP2020/075856 priority patent/WO2021053011A1/fr
Publication of EP3795730A1 publication Critical patent/EP3795730A1/fr
Application granted granted Critical
Publication of EP3795730B1 publication Critical patent/EP3795730B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D04B27/26—Shogging devices therefor
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/04—Sinkers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/06—Needle bars; Sinker bars
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/10—Devices for supplying, feeding, or guiding threads to needles
    • D04B27/24—Thread guide bar assemblies
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B27/00—Details of, or auxiliary devices incorporated in, warp knitting machines, restricted to machines of this kind
    • D04B27/34—Take-up or draw-off devices for knitted products

Definitions

  • Warp knitting machines for producing warp knitted goods have been known in many embodiments for decades.
  • several knitting tools are usually carried by bars and driven via bar carriers with lever shafts which extend in a machine width direction.
  • the lever shafts are mostly mounted in a machine frame which comprises several central walls which are arranged offset from one another in the machine width direction.
  • the knitting tools used typically include hook needles, thread guide elements - such as, for example, perforated needles or laying tubes -, slides and knitting sinkers - such as, for example, locking sinkers, cutting comb sinkers or stitching comb sinkers.
  • the knitting tools are usually carried by bars, which are driven in warp knitting machines by a lever shaft in such a way that they execute pivoting movements independently of one another in a plane transverse to the lever shafts - i.e. a plane that runs in the machine height and machine depth direction.
  • the bars which carry the thread guide elements are called guide bars and are additionally mounted and driven in such a way that they execute an oscillating offset movement in the machine width direction superimposed on their pivoting movement.
  • One bar each fitted with hook needles, at least one bar fitted with knitting sinkers and at least one guide bar fitted with thread guide elements are functionally connected to one another in order to produce a layer of warp knitted fabric. Depending on the type of warp knitting fabric and warp knitting machine, other bars and knitting tools can participate in this functional connection.
  • warp knitting machines in which the warp knitted fabric produced is pulled off by a goods take-off device approximately in a horizontal direction to the front, and Raschel machines in which the warp knitted fabric produced is pulled off by a goods take-off device approximately vertically downwards in a vertical direction Direction is deducted from the machine.
  • a pull-off force acts on the warp-knitted fabric, which has an influence on the properties of the warp-knitted fabric produced.
  • DE10349417B3 describes a warp knitting machine for producing a spacer knitted fabric, the guide bars of which can be set in their basic position transversely to the machine width direction, which corresponds to a machine depth direction.
  • the guide bars are arranged on the machine frame via a carrier that can be positioned in the machine depth direction by a central drive.
  • DD120669 describes a device which is used to change the pivoting movement of the guide bars of a warp knitting machine.
  • the guide bars are connected to two lever shafts via two carriers, which in turn are driven by a drive ram via a connection of levers.
  • the position of the connection between the drive tappet and the lever can be changed by means of a screw connection with an elongated hole.
  • the guide bars are connected to two lever shafts via several levers and a carrier, and therefore do not perform a pivoting movement around a fixed axis of rotation of a lever shaft, but around a momentary pole that can shift during the pivoting movement depending on the kinematics of the construction of levers and carriers.
  • warp knitted goods with compositions of different diversity - that is, warp knitted goods that include, for example, different combinations of thread materials, a different number of threads per stitch, different stitch bonds and / or a different combination of stitch bonds - may require a different number of guide bars or use another warp knitting machine - for example a Raschel machine instead of a warp knitting machine.
  • warp knitted goods are now produced on a warp knitting machine with four guide bars, the thread guide elements and the hook needles have to cover a longer distance in their pivoting movement than on a warp knitting machine with only two guide bars and the knitting speed is consequently slower. It may also be necessary to adapt the spatial course of the pivoting movement in order to be able to optimally adapt the effective speed to the number of guide bars used. Therefore, warp knitted goods, for the production of which a different number of guide bars are required, have so far usually been manufactured on different warp knitting machines at the optimal knitting speed. Furthermore, there are warp knitted goods which, due to their composition, especially due to their stitch weave and the combination of stitch weaves, can either only be produced on Raschel machines or only on automatic warp knitting machines.
  • a warp knitted fabric with a high proportion of fringes - i.e. with a stitch weave in which a thread is inserted into the same hook needle in several rows, and thus has no connection to the neighboring wales - cannot be produced on a warp knitting machine and requires the Use of a Raschel machine.
  • the present invention is therefore based on the object of specifying a warp knitting machine which enables the successive production of batches of warp knitted goods with compositions of different diversity on a single warp knitting machine.
  • the object is achieved according to the invention by the preambles and the characteristics of claims 1 and 12.
  • the relative position of the lever shaft, with which at least one guide bar can be driven, to the lever shafts, with which at least one further bar can each be driven, is adjustable in the machine height and / or machine depth direction of a warp knitting machine. To change the diversity of the composition of the fabric web of warp knitted fabric produced, this relative position is changed in the machine height and / or machine depth direction.
  • the course of the pivoting movement of the thread guide elements can be adapted relative to the active movement of the hook needles.
  • the swiveling movements of the thread guide elements and the hook needles can be optimally matched to the number of guide bars. If a textile is to be produced with the same machine that requires the use of two guide bars, it was not possible on previous machines to optimally coordinate the pivoting movement of the thread guide elements and the hook needles with the reduced number of guide bars; In a warp knitting machine, for example, the hook needles can perform a shorter pivoting movement with only two guide bars, which increases the knitting speed.
  • the pivoting movement of the thread guide elements can be adapted to the changed pivoting movement of the hook needles. Furthermore, when changing the warp knitting machine from a warp knitting machine to a Raschel machine, the relative position of the lever shaft that drives the guide bars can be set in such a way that the pivoting movement of the thread guiding elements at the level of the hook needles is largely in the machine depth direction, whereas the pivoting movement of the thread guiding elements at the level of the hook needles in a warp knitting machine has comparably large directional components in terms of their amount in the machine height and machine depth directions.
  • the angular range of the pivoting movements of the lever shaft with which the at least one guide bar is driven is adjustable.
  • the angular range of the pivoting movement above all the position and length of the pivoting movement can be adapted on a circumference with a fixed pivoting radius around the axis of rotation of the lever shaft. It is therefore advantageous, especially when changing the number of guide bars, to adapt the angular range of the pivoting movement.
  • the lever shafts assigned to the other bars can also advantageously experience a change in the angular range of their pivoting movements.
  • at least two drives are provided. It is also useful if one of these drives is assigned to the at least one guide bar.
  • the other drive can advantageously drive the remaining bars. However, several drives can also be assigned to the remaining bars - for example one drive for each bar. As will be discussed below, there is an advantageous way of controlling several lever shaft drives in that one or more control devices are provided that control the drives.
  • a warp knitting machine with a machine frame which carries the lever shafts and which comprises a machine head and a machine lower part is particularly advantageous, the machine head and the machine lower part being adjustable relative to one another in the machine height direction and / or in the machine depth direction.
  • the machine head includes at least the lever shaft of the guide bars and the components that can be driven by it.
  • the lever shaft of the guide bars can be rotatably received by the machine head around its axis of rotation.
  • the lever shaft of the guide bars is designed to be rotatable about its axis of rotation by means of a bearing, the upper machine part receiving the bearing, which comprises at least two bearings.
  • An advantageous embodiment of the invention is a warp knitting machine whose upper machine part comprises at least two upper middle walls offset parallel to one another in the machine width direction and the lower machine part comprises at least two lower middle walls offset parallel to one another in the machine width direction. It is advantageous if the upper middle walls and lower middle walls comprise bearings, with at least two bearings of different middle walls forming at least one bearing for at least one lever shaft. Furthermore, it is advantageous if an upper central wall is connected to a lower central wall in such a way that the position of the central walls relative to one another can be adjusted.
  • an upper middle wall can be connected to a lower middle wall by a screw connection, the screw connection comprising at least one screw and / or fitting screw, at least one through hole or an elongated hole and at least one threaded hole.
  • the screw connection comprising at least one screw and / or fitting screw, at least one through hole or an elongated hole and at least one threaded hole.
  • fitting screws it is also advantageous to use screws that are functionally connected to at least one fitting pin.
  • a warp knitting machine is advantageous, the means for adjusting the relative position between parts of the machine frame - for example the machine head and the Machine base - includes.
  • a particularly advantageous means for adjusting the relative position are spacer plates which are arranged between the parts of the machine frame. The thickness of the spacer plates, which extends in the machine height direction, determines the relative position between the parts of the machine frame in the machine height direction. It is also advantageous to arrange at least two spacer plates one above the other between parts of the machine frame in order to adjust the relative position between the parts of the machine frame by the sum of the thicknesses of the at least two spacer plates.
  • Another advantageous means for adjusting the relative position between the upper machine part and the lower machine part is a screw connection which comprises at least one screw, at least one elongated hole, the longitudinal axis of which extends in the machine depth direction, and at least one threaded hole.
  • the lower machine part can comprise the at least one threaded hole and the upper machine part and the spacer plates each comprise at least one elongated hole per threaded hole.
  • the upper machine part and / or the lower machine part includes scaling in the machine height and / or machine depth direction, which enables the relative position to be adjusted precisely and reproducibly.
  • Another advantageous means for setting the relative position between the upper machine part and the lower machine part is a rail connection.
  • a form-fitting rail connection is advantageous.
  • a rail connection which enables adjustability in the machine depth direction and / or machine height direction and is play-free in the machine width direction is particularly advantageous.
  • a rail connection which comprises a device for locking the relative position between the upper machine part and the lower machine part is also advantageous. Also advantageous is a warp knitting machine which comprises at least one electric motor which drives the machine head in its adjustment movement in the machine height and / or machine depth direction.
  • An advantageous embodiment of the invention is a warp knitting machine, the machine head of which comprises at least one offset drive, which the at least one guide bar drives for their offset oscillating movement in the machine width direction.
  • the advantage here is that it is not necessary to adjust the connection between the at least one offset drive and the at least one guide bar for an adjustment of the relative position between the upper machine part and the lower machine part, since the position of the at least one offset drive relative to the at least one guide bar does not change.
  • the set-up time for adjusting the relative position between the machine head and the machine base can be reduced as a result.
  • a swivel drive is assigned to each of the lever shafts for their respective swivel movement, the swivel drive preferably comprising an electric machine.
  • the swivel drive is used to drive the lever shafts to rotate around their axes of rotation. If each lever shaft is assigned its own swivel drive, a complex central gear that connects all lever shafts to a central drive motor can be omitted. The construction and maintenance costs as well as the complexity of the warp knitting machine are reduced.
  • At least one swivel drive comprises a linear stepper motor. It is particularly advantageous if a slider crank mechanism connects a linear stepping motor output shaft to one of the lever shafts, the slider crank mechanism comprising a drive lever and a joint that is eccentrically connected to the lever shaft. The crank mechanism converts a linear drive movement into a rotary movement of the lever shaft around its axis of rotation. The great advantage of the slider crank mechanism is that it can be carried out largely free of backlash even when the direction of movement is changed, and thus transmits the drive movement without losing any parts of the movement.
  • At least one swivel drive comprises a rotary stepper motor. It is particularly advantageous if a belt drive connects a rotary stepping motor output shaft to one of the lever shafts.
  • the lever shaft can be driven by the rotary stepping motor by means of a toothed belt, toothed belt pulleys being arranged on the rotary stepping motor output shaft and the lever shaft, which are positively connected to the toothed belt.
  • the positive connection means that the drive movements are transmitted without slippage and therefore without any loss of movement components.
  • An advantageous embodiment of the invention is a warp knitting machine whose upper machine part comprises at least one pivot drive for the lever shaft of the at least one guide bar. Adjustment of the relative position between the upper machine part and the lower machine part is possible without adapting the connection between the swivel drive and the lever shaft of the at least one guide bar, since the position of the at least one swivel drive relative to the lever shaft of the at least one guide bar does not change. In this way, the set-up time for adjusting the relative position between the upper machine part and the lower machine part is reduced.
  • the toothed belt would have to be exchanged for a toothed belt with a correspondingly adapted length every time the relative position between the upper and lower part of the machine is adjusted, if the swivel drive is not received by the upper machine part.
  • a warp knitting machine whose multiple swivel drives comprise electric machines is also advantageous. These electric machines can advantageously be controllable by an electronic control device.
  • the electronic control device may comprise means for generating and amplifying signals, storage devices and power electronics. As a rule, it should be a machine computer that provides control signals. These will control frequency converters in the case of normal electrical machines or suitable power electronics such as an amplifier circuit (motor driver) that is suitable for controlling stepper motors.
  • the electrical machines are supplied with current of the appropriate strength, voltage, frequency or signal form for the appropriate movement profiles. In this way, the electronic control controls the drive movement of the electric machines, the warp knitting machine translating the drive movement of the electric machines into a knitting movement of the knitting tools and thus the knitting tools being driven by the electric machines.
  • An electronic control device is advantageous which is set up to control the electric machines in such a way that they drive the knitting tools driven by them in accordance with certain predetermined movement profiles. Movement profiles that can be programmed are particularly advantageous. It is also advantageous to combine movement profiles in groups, each group comprising a movement profile for each knitting tool of the warp knitting machine and the movement profiles in this way are coordinated so that the knitting tools perform knitting movements that match each other during the same period of time. The specification of motion profiles thus makes it possible to control the knitting movements of the knitting tools in a targeted manner.
  • the knitting movement of the thread guide elements can be re-adjusted to the relative position and knitting movement of the other knitting tools and the warp knitting machine can be set more variably for the production of batches of warp knitted fabrics with compositions of different diversity.
  • a method is advantageous in which at least two different swivel drives are used, the first of which drives at least the guide bar and the second at least one other bar and the movement of these two swivel drives is controlled in such a way that that the thread guide elements of the guide bar and the needles of the other bar execute coordinated knitting movements.
  • at least two different swivel drives it is possible to control the swivel movement of different bars independently of one another and thus to be able to coordinate the active movements of the bars with one another. If the relative position of the lever shaft that drives the guide bar has to be changed due to a change in the batch of warp knitted goods, the knitting movements of the knitting tools can be coordinated more variably with one another.
  • control of the at least two swivel drives takes place on the basis of stored movement profiles that are individually tailored to the composition of the respective batch.
  • One movement profile each depicts a specific knitting movement of a knitting tool. It is advantageous to specify the movement profiles as input variables when setting up the warp knitting machine and to select and program them according to the warp knitted fabric to be produced.
  • the movement profiles of the knitting tools must be coordinated with one another depending on the selected composition of the warp knitted fabric produced so that the knitting tools work together synchronously to produce the desired warp knitted fabric.
  • a group of coordinated movement profiles that includes exactly one movement profile for each knitting tool. It is beneficial in one Storage device to store at least two groups of coordinated movement profiles and to use them depending on the selected composition of the warp knitted fabric produced.
  • the appropriate movement profile can be selected and does not have to be reprogrammed.
  • a warp knitting machine which comprises a knitting blank for loop formation - also referred to in the following simply as a blank - which is universally suitable both for the production of Raschel fabrics and for the production of automatic warp knitting fabrics.
  • a knitting blank for loop formation also referred to in the following simply as a blank - which is universally suitable both for the production of Raschel fabrics and for the production of automatic warp knitting fabrics.
  • Such a board is described below.
  • a sinker for a warp knitting machine which has a knockdown edge, a hold-down edge and an enclosing edge, the knockdown edge extending in a width direction and at least in sections in a longitudinal direction of the sinker and a height direction of the sinker pointing vertically upwards from the surface of the knockdown edge, the hold-down edge is arranged opposite the knockdown edge at a distance in the vertical direction and the containment edge limits and connects the knockdown edge and the holddown edge in the longitudinal direction to the rear, with a contact edge adjoining the knockdown edge at a knockdown edge transition point and a support edge adjoining the contact edge at a support edge transition point, wherein the support edge extends at least in sections approximately in the longitudinal direction and is arranged in the vertical direction below the knock-off edge.
  • a plate is particularly advantageous in which the support edge transition point is at least four times as far apart from the knockdown edge transition point in the vertical direction as in the longitudinal direction.
  • the knockdown edge is straight and the knockdown edge extends entirely in the longitudinal direction.
  • the knockdown edge can, however, also run in a curve, so that the knockdown edge only runs in the longitudinal direction in sections, possibly even only on an infinitesimally small section.
  • the longitudinal direction can be determined by a tangent that is applied to the tee edge in the middle between a tee edge transition point and the point above which the hold-down edge ends in the forward direction.
  • the width direction, length direction and height direction of the board together form a right-angled coordinate system that is "board-fixed"; It can therefore move together with a possible movement of the plate relative to the previously introduced coordinate system of the warp knitting machine, consisting of machine depth direction, machine height direction and machine width direction, and in particular also rotate around the axis of the machine width direction.
  • the warp knitting machine and the sinker corresponds to the width direction of the sinker to the machine width direction.
  • Sinkers that have a knock-off edge, a hold-down edge and a containment edge are typically used in a warp knitting machine. Due to the additional arrangement of a correspondingly designed contact edge and a support edge that adjoin the knockdown edge, the board is set up for knocking off (fringe) stitches when the draw-off device of the warp knitting machine draws in the vertical direction.
  • a warp knitted fabric that is only produced on a Raschel machine can be produced with the blank.
  • the changeover from automatic warp knitting goods to Raschel goods can even take place without the knitting tools (such as sinkers, but also needles, for example) being exchanged.
  • the plate can advantageously be punched from a steel strip like conventional plates.
  • the thickness direction of the steel strip is then the width direction of the blank.
  • the sinker can be set up to be moved along the knockdown edge in the longitudinal direction for stitch formation, as is usual for sinkers with knockdown edge, hold-down edge and containment edge.
  • the support edge can be arranged parallel to the knockdown edge.
  • the support edge can, however, also be arranged at an angle between 0 ° and 25 ° to the knock-off edge.
  • the theoretical point of intersection between the support edge and the knock-off edge then preferably lies in the longitudinal direction in front of the blank.
  • the angle between the contact edge and the support edge is preferably 90 °.
  • a tee tape can be supported on the support edge, which has an advantageous rectangular cross section.
  • a chopping tape supported in this way can be placed against the contact edge so that it is pressed against the contact edge by a pull-off force that acts on the warp knitted fabric.
  • the pull-off force can act downwards in the warp knitting machine in its vertical direction.
  • a distance of a support edge transition point from a knockdown edge transition point which is at least four times as large in the vertical direction as in the longitudinal direction means that the contact edge of the board or the outer surface of a board arrangement in the machine is arranged approximately in the vertical direction of the machine.
  • the contact edge or outer surface can be inclined by up to 25 ° or, for example, 15 °, 10 ° or 5 ° to the vertical direction of the machine in such a way that areas of the contact edge or the outer surface that lie further down continue to move in the horizontal direction protrude in front than in areas higher up in the vertical direction.
  • a vertical take-off is accordingly also understood to mean a take-off direction which deviates from the vertical by the angles mentioned.
  • the circuit board can have a surface coating.
  • the support edge transition point is advantageously spaced from the knockdown edge transition point in the height direction between 3 mm and 10 mm.
  • the distance can assume any values in between, for example 5mm or 6.5mm.
  • the contact edge comprises a holding device which is designed as a section-wise indentation and / or elevation of the contact edge. A larger distance between the support edge transition point and the knockdown edge transition point can provide more installation space for attaching a holding device to the contact edge.
  • the support edge ends at a maximum of 2 mm in the longitudinal direction to the front from the support edge transition point.
  • the support edge can have an extension of a maximum of 2 mm in the longitudinal direction, for example 0.7 mm or 1 mm. Any values up to 2 mm are advantageous.
  • the knock-off edge and the contact edge enclose an angle between 90 ° and 115 °.
  • An angle between 95 ° and 110 ° is particularly preferred.
  • the knock-off edge protrudes beyond the hold-down edge in the longitudinal direction forwards by a maximum of 2 mm.
  • the knock-down edge can advantageously project beyond the hold-down edge in the longitudinal direction forwards by a maximum of 5 mm.
  • the knock-down edge can project beyond the hold-down edge in the longitudinal direction forwards by values between 1 mm and 5 mm or by values between 1.5 mm and 4 mm, for example 2 mm, 2.5 mm or 3 mm.
  • a knock-off edge which extends only 2mm or less further forward than the hold-down edge, enables the warp knitted fabric to be pulled down in the vertical direction of a warp knitting machine without having to travel a long way through the circuit board or circuit board arrangement to form a loop.
  • An advantageous embodiment of the warp knitting machine according to the invention comprises a sinker arrangement.
  • a circuit board arrangement is advantageous which has a plurality of the previously described circuit boards, which are arranged congruently lined up at a constant distance in the width direction, and at least one knock-off band, which on the support edge and on the contact edge at least a subset of the plurality of Boards and bridges the distance in the width direction between at least two boards and the outer surface of which is opposite the surface with which the knock-off tape rests on the contact surface of the board.
  • the sinker arrangement is characterized in that an upper end of the outer surface of the teeing tape in the vertical direction is spaced at least four times as far in the vertical direction as in the longitudinal direction from a lower end of the outer surface of the teeing tape in the vertical direction.
  • the tee tape can be used, among other things, to cut off fringe stitches that would otherwise slip between the sinkers. Due to the position of the knock-off tape based on the vertical direction, a warp-knitted fabric can be pulled off by sliding down the outside of the knock-off tape approximately in the vertical direction of the warp knitting machine. A withdrawal direction in the machine direction horizontally to the front is of course also possible. In particular with vertical withdrawal, the knitting tape is pressed by the warp knitted fabric against the support edge and the contact edge of the blanks. The tee tape can therefore be connected sufficiently securely to the boards by means of a detachable fastening.
  • the tee tape can have an essentially rectangular cross section which is essentially constant over its extension in the width direction.
  • Such a tape can be procured inexpensively and mounted reproducibly over the entire extent of the circuit board arrangement in the width direction.
  • the width direction of the board corresponds to the width direction of the board arrangement.
  • the width direction of the sinker arrangement is approximately the width over which warp knitted goods can be produced on the warp knitting machine.
  • Warp knitting machines are usually between 1.28 meters and 7 meters, typically several meters, for example about 4 meters, wide.
  • the cutting belt can span the entire width of the machine.
  • the tee tape can also comprise several parts over the width direction, which then extend in total over the entire width.
  • the circuit board arrangement preferably comprises a plurality of sub-arrangements of circuit boards or modules with circuit boards.
  • the tee band can consist of a wear-resistant material such as hardened steel and / or be provided with a wear-resistant coating.
  • the tee tape preferably has a smooth surface, advantageously with rounded edges, so that the quality of the warp-knitted fabric passing by is not affected.
  • the cut-off band can be arranged flush or set back in the vertical direction opposite the cut-off edge of the at least one subset of the plurality of blanks. This ensures that the warp knitted fabric can be pulled over the knock-off tape without any problems when it is pulled off.
  • the chopping band can advantageously have at least one extension in the longitudinal direction like the support edge.
  • the warp knitted fabric cannot get stuck at the transition to the support surface when sliding along the outer edge of the knock-off belt.
  • a support edge which is set back with respect to the outer edge of the tee belt is particularly advantageous.
  • the tee band can interact with at least one holding device of a contact edge of a blank of the at least one subset of the plurality of blanks.
  • the tee tape can advantageously have a connecting means which is fastened to the tee tape and is releasably fastened to the holding device of the contact edge.
  • the connecting means can, for example, be glued to the tee tape.
  • the connecting means can, for example, be clipped onto the holding device of the contact edge.
  • the connecting means can also be attached to the tee tape other than by gluing.
  • the connecting means can also be in one piece with the tee tape.
  • the connecting means can be a plastic profile.
  • the connecting means can be clipped into a recess on the contact edge of the board.
  • the recess can have a cross section which corresponds at least in sections to the cross section of the connecting means or which can accommodate a section of the connecting means under tension.
  • all known options can be used.
  • the connecting means can advantageously have at least one spacer element which sets the distance in the width direction between the boards at their front end.
  • the circuit board arrangement can also be stabilized by the connecting means.
  • the spacer element or the spacer elements can be regularly occurring elevations of the connecting means.
  • a socket that fulfills this purpose is superfluous.
  • a socket can be cast as known.
  • the socket can then also pass through holes in the board or encompass projections on the boards.
  • the warp knitting machine can be used universally for the production of automatic warp knitting goods and Raschel machine goods due to the design of the plate arrangement and the adjustability of the fabric take-off device, for which different knitting plates or plate arrangements would otherwise have to be procured and equipped. After the appropriate setting or adjustment of the fabric take-off device and the relative position of the machine head, a completely different warp knitted fabric can be produced, preferably without exchanging the knitting tools.
  • the sinker arrangement can be moved along an arcuate path - in the sense of a pivoting movement.
  • the arcuate path can enclose the horizontal direction, that is to say the machine depth direction, towards the front of the warp knitting machine.
  • In front is the direction from which a warp knitting machine is usually operated and in which the warp knitting machine is pulled off.
  • the knock-off edge and thus the longitudinal direction of the sinkers of the sinker arrangement can be arranged at least temporarily parallel to the horizontal direction of the warp knitting machine during the loop formation.
  • the knockdown edge is inclined a maximum of 10 ° forwards at least at the time after the knocking off of the loop if it is not parallel to the horizontal.
  • the sinker arrangement cannot perform any movement during the loop formation either.
  • the needle arrangement can follow an arcuate path - in the sense of a pivoting movement - during loop formation.
  • the arcuate path can include the vertical direction of the warp knitting machine, that is, the machine height direction.
  • the elongated needle shafts can be at least temporarily aligned at least approximately parallel to the vertical during the loop formation.
  • the needles can deviate from the vertical alignment by a maximum of 10 ° and are then preferably inclined backwards with their hooks.
  • the needles are preferably less inclined to the vertical than the outer edge of the cutting tape of the sinker arrangement.
  • At least one first roller of the fabric take-off device which is arranged closest to the loop formation area, is drivable and its direction of rotation is reversible. In this way, the draw-off angle can be set as best as possible and the accessibility of the loop formation area is retained.
  • the Figure 1 shows a schematic diagram of a warp knitting machine 26, the machine frame 25 of which is divided into two parts and comprises an upper machine part 1 and a lower machine part 2, the lower machine part 2 being arranged on a machine bed 14.
  • the upper machine part 1 comprises a lever shaft 3 which is rotatably mounted in the upper machine part and is connected to bar supports 7.
  • a guide bar 8 is mounted on the bar carrier 7 such that it can be displaced in the machine width direction z.
  • the storage is not shown for the sake of simplicity.
  • the warp knitting machine 26 comprises three further lever shafts 4, 5, 6, all three of which are rotatably mounted in the machine lower part 2 and initiate knitting movements in knitting tools via bar carriers and bars. These ingot carriers and knitting tools are not shown.
  • the upper machine part 1 and the lower machine part 2 are connected to one another by means of screws 11, the upper machine part 1 having an elongated hole for each screw 11, the longitudinal axis of which extends in the machine depth direction x, and the lower machine part 2 for each screw 11 has a threaded hole.
  • other devices for connecting the upper machine part 1 to the lower machine part 2 are also advantageously conceivable - for example a connection with lockable rails.
  • the upper machine part 1 can be displaced in the machine depth direction x relative to the lower machine part 2 by an amount which corresponds to the length of the elongated hole.
  • spacer plates 10 are arranged, with the height of which in the machine height direction y the relative position of the machine upper part 1 to the machine lower part 2 in the machine height direction y can be set.
  • the Figure 2 shows the warp knitting machine 26 from Figure 1 in a view rotated by 90 degrees around the machine height direction y.
  • the machine lower part 2 comprises three lower middle walls 13 which are offset from one another in the machine width direction z and are connected to the machine bed 14.
  • the machine head 1 comprises three upper middle walls 12, the lever shaft 3 with which the guide bar 8 can be driven, a pivot drive 15 for the Lever shaft 3 and an offset drive 16 for the guide bar 8.
  • Three spacer plates 10 and the upper machine part 1 are connected to the lower machine part 2 by means of screws 11.
  • the swivel drive 15 drives the lever shaft 3, with which the guide bar 8 can be driven, and the guide bar 8 and the thread guide elements 9 execute a swivel movement about the axis of rotation of the lever shaft 3.
  • the offset drive 16 drives the guide bar 8 and the thread guide elements 9 in an oscillating offset movement in the machine width direction z. By superimposing the pivoting movement and the offset movement, the thread guide elements 9 execute a three-dimensional knitting movement.
  • the Figure 3 shows section A, the position of which in Figure 1 is shown.
  • the three spacer plates 10 are shown in section.
  • the elongated holes 17 of the spacer plates 10 enable the adjustment of the relative position of the machine upper part 1 to the machine lower part 2 in the machine depth direction x.
  • the Figure 4 shows the pivot drive 15 of a lever shaft 3, 4, 5, 6, which comprises a linear stepping motor 18, a linear stepping motor output shaft 19, a drive lever 20 and a joint 21 attached eccentrically to one of the lever shafts 3, 4, 5, 6.
  • the linear drive movement of the linear stepping motor output shaft 19 is translated into a rotary movement of the lever shaft 3, 4, 5, 6 via the drive lever 20 and the joint 21 attached eccentrically to the lever shaft 3, 4, 5, 6.
  • the Figure 5 shows the swivel drive 15 of a lever shaft 3, 4, 5, 6, which comprises a rotary stepper motor 22, a rotary stepper motor output shaft 23 and a belt drive 24.
  • the belt drive 24 is preferably a toothed belt that is positively connected to the rotary stepping motor output shaft 23 and the lever shaft 3, 4, 5, 6 with toothed belt pulleys, the speed and torque of the rotary stepping motor output shaft 23 depending on the number of teeth on the toothed belt pulleys be translated into a speed and a torque of the lever shaft 3, 4, 5, 6 without slipping.
  • All four lever shafts 3, 4, 5, 6 of the exemplary embodiment are assigned swivel drives 15, these being controllable via a common electronic control device.
  • the electronic control device comprises a storage device in which movement profiles for knitting tools are stored and specify the knitting movement of the knitting tools. In order to produce a warp knitted fabric 120, all must Knitting tools execute coordinated knitting movements.
  • the stored movement profiles are therefore assigned to groups which each comprise a movement profile that is matched to the other movement profiles of the group, for each one knitting tool.
  • the electronic control device can control the swivel drives 15 according to a selected group of movement profiles in such a way that the knitting tools execute the coordinated knitting movements.
  • the Figure 6 shows a schematic representation of the spatial arrangement of the lever shaft 3 relative to the thread guide elements 9 and a hook needle 27 when the warp knitting machine 26 operates on the principle of an automatic warp knitting machine.
  • the illustration is not true to scale; In particular, the pivot radius 33 is shown too small compared to the other elements of the illustration.
  • the bars 7 and 8 guide bars are in the Figure 6 not shown, but connect the thread guide elements 9 to the lever shaft 3 in the warp knitting machine 26.
  • the thread guide elements 9 perform a pivoting movement 28 on a circumference with the pivot radius 33 around the lever shaft 3, which has directional components both in the machine depth direction x and in the machine height direction y.
  • the Figure 7 shows a schematic representation of the spatial arrangement of the lever shaft 3 relative to the thread guide elements 9 and a hook needle 27 when the warp knitting machine 26 operates according to the Raschel principle.
  • the illustration shows largely the same elements as Figure 6 .
  • the arrangement of the elements to one another differs due to the Raschel principle: the pivoting movement 29 of the In comparison to the pivoting movement 28 of a warp knitting machine, which operates on the principle of an automatic warp knitting machine, thread guide elements 9 have a significantly smaller directional component in the machine height direction y. With the Raschel principle, the pivoting movement 29 of the thread guide elements 9 thus runs predominantly in the machine depth direction y.
  • the depth offset 31 between the lever shaft 3 and the hook needle 27 is much smaller than in a warp knitting machine that works on the principle of a warp knitting machine, or the lever shaft 3 and the hook needle 27 are arranged one above the other in such a way that no depth offset 31 between both consists.
  • the pivoting radius 33 remains unchanged, the height offset 32 must be greater with the Raschel principle than with a warp knitting machine that works on the principle of a warp knitting machine so that the pivoting movement 29 of the thread guide elements at the level of the hook needle 27 runs predominantly in the machine depth direction x.
  • the height offset 32 and the pivot radius 33 have approximately the same amount in the Raschel principle.
  • the warp knitting machine 26 described above in which the lever shaft 3, with which the guide bars are driven, in its position relative to the other lever shafts 4, 5, 6 - and thus also to the knitting tools 27, 101 of these lever shafts 4, 5, 6 - in Machine depth direction x and machine height direction y are adjustable, can thus be operated by the correct setting of this relative position both according to the Raschel principle and according to the principle of a warp knitting machine.
  • knitting plates 101, plate arrangements 110 and goods take-off devices 115 suitable for this purpose are described.
  • Figure 8 shows in a symbolic representation a front end of a blank 101 in a view in the width direction B.
  • the blank 101 comprises a knock-off edge 102, which is straight and forward (in Figure 8 left) is inclined.
  • the hold-down edge 103 lies opposite the cut-off edge 102 in the height direction H at a distance.
  • the containment edge 104 connects the knockdown edge 102 with the hold-down edge 103 and limits both to the rear (in the Figure 8 right).
  • the knockdown edge is bounded towards the front by a knockdown edge transition point 105, to which a steeply sloping abutment edge 106 extending approximately in the height direction H connects. In its lower region, the contact edge 106 has a depression which can serve as a holding device 109.
  • the contact edge 106 ends in a support edge transition point 107, to which a support edge 108 adjoins.
  • the support edge 108 runs approximately parallel to the knock-off edge 102 and at right angles to the contact edge 106.
  • the plate 101 is without its rear (in FIG Figure 8 right) Section that is used to connect to other machine elements such as a bar is shown.
  • the connection of the circuit board 101 to further machine elements can be designed in any way according to the prior art.
  • Figure 9 shows in a symbolic representation, by way of example, two boards 101 of a board arrangement 110 with a knock-off tape 111 in a view obliquely from above and from the front.
  • the circuit boards 101 are for the most part identical to the circuit boards 101 of FIG Figure 8 .
  • the chopping belt 111 rests on the support edge 108 and on the contact edge 106.
  • the contact edge 106 and the support edge 108 are accordingly covered in this view by the chopping belt 111.
  • the knock-off tape 111 bridges the distance in the width direction B between the sinkers 101 and warp-knitted fabric 120 can, if necessary, be pulled downwards in the height direction H over the upper edge of the knock-off tape 111 and its outside 112.
  • warp knitted fabric 120 can also be withdrawn parallel to the longitudinal direction L and parallel to the knock-off edge 102 to the front. As in Figure 8 only the front end of the sinkers 101 is shown. Figure 9 shows only part of the extension in the width direction B of the knock-off tape 111 and the circuit board arrangement 110.
  • Figure 10 shows a symbolic oblique view of a section of a tee belt 111 with connecting means 113.
  • the spacer elements 114 designed as elevations of the connecting means 113 can be inserted between the boards of a board arrangement 110 and thus precisely set and stabilize their required spacing at their front ends. Based on Figure 9 two circuit boards 101 can be spaced apart by the spacing elements 114 shown.
  • Figure 11 shows the fabric take-off device 115, the sinker arrangement 110 and the hook needles 27 of a warp knitting machine 26 in a symbolic view in the width direction B when the fabric take-off device 115 is set starting from the loop formation area in a horizontally forward direction Hz of the warp knitting machine.
  • the hook needles 27 are received by the needle bar 122.
  • the die bar is not shown in the view.
  • Figure 11 shows a sinker assembly 110 together with a compound needle assembly comprising hook needles 27 and slider 123 according to the prior art, with parts of the slider 123 are covered by the hook needles 27.
  • the warp knitted fabric 120 indicated as a single line is pulled off approximately parallel to the knock-off edge 102.
  • the warp yarns 30 - or also threads 30 - are fed in, as usual, essentially in the vertical direction from above, which in turn is symbolized by a line.
  • the goods take-off device 115 is shown in a first predeterminable setting 116.
  • the first roller 118 of the goods take-off device 115 rotates counterclockwise in this setting.
  • the second roller 119 or the axis of the second roller 119 of the goods take-off device 115 is arranged in the vertical direction V below the first roller 118 or the axis of the first roller 118.
  • Figure 12 shows the same components of a warp knitting machine in a symbolic view in the width direction B but when the fabric take-off device 115 is set in the vertical direction V.
  • the fabric take-off device 115 is shown in a second presettable setting 117.
  • the first roller 118 of the goods take-off device 115 rotates clockwise in this setting.
  • the second roller 119 of the goods take-off device 115 is arranged in the vertical direction V above the first roller 118.
  • the warp knitted fabric 120 is pulled off via the chopping belt 111.
  • the warp knitted fabric 120 is peeled off at a small angle to the vertical direction V.
  • the rollers 118, 119 or their diameter are not shown on the same scale as the knitting tools.
  • the Figure 13 shows a schematic representation of the warp knitting machine 26 according to the invention in a configuration which serves to produce warp knitted goods 120 in the sense of automatic warp knitting goods.
  • the fabric take-off device 115 is in a first predeterminable setting 116, the warp knitted fabric 120 produced being withdrawn as far as possible in the horizontal direction Hz.
  • the relative offset 31, 32 between the lever shaft 3 and the hook needle 27 is set in such a way that the thread guide elements 9 perform the pivoting movement 28 of a warp knitting machine, i.e. move as far as possible at the level of the hook needle 27 with comparable directions in the horizontal direction Hz and vertical direction V.
  • the stitches produced are knocked off with the sinker arrangement 110 by contact with the knock-off edges 102 from the hook needle 27.
  • FIG. 11 shows a schematic representation of the warp knitting machine in a configuration that enables the production of warp knitted fabric 120 in the sense of FIG Raschel machine ware is used.
  • the goods take-off device 115 is in a second presettable setting 117, the warp knitted fabric 120 produced being withdrawn as far as possible in the vertical direction V.
  • the relative offset 31, 32 between the lever shaft and the hook needle is set in such a way that the thread guide elements 9 perform the pivoting movement 29 of a Raschel machine, that is to say move as far as possible in the horizontal direction Hz at the level of the hook needle 27.
  • the stitches produced are knocked off with the sinker arrangement 110 by contact with the knockdown tape 111 and the knockdown edges 102 from the hook needle 27.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)
EP20181084.3A 2019-09-18 2020-06-19 Métier à tricoter chaîne et procédé destiné à la fabrication de produits tricotés à chaîne Active EP3795730B1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2022517919A JP2022548383A (ja) 2019-09-18 2020-09-16 経編地を製造するための経編機
PCT/EP2020/075862 WO2021053014A1 (fr) 2019-09-18 2020-09-16 Platine, ensemble platine et métier à mailles jetées
CN202080065545.4A CN114375354A (zh) 2019-09-18 2020-09-16 用于生成经编织物的经编机
CN202080065547.3A CN114364833B (zh) 2019-09-18 2020-09-16 沉降片，沉降片组件和经编机
JP2022517920A JP7529772B2 (ja) 2019-09-18 2020-09-16 シンカー、シンカー配列及び経編機
PCT/EP2020/075856 WO2021053011A1 (fr) 2019-09-18 2020-09-16 Métier à mailles jetées pour produire un tissu à mailles jetées

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19198061.4A EP3795729B1 (fr) 2019-09-18 2019-09-18 Platine, agencement de platine et métier à mailles jetées

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EP3795730A1 true EP3795730A1 (fr) 2021-03-24
EP3795730B1 EP3795730B1 (fr) 2022-11-02

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EP19198061.4A Active EP3795729B1 (fr) 2019-09-18 2019-09-18 Platine, agencement de platine et métier à mailles jetées
EP20181084.3A Active EP3795730B1 (fr) 2019-09-18 2020-06-19 Métier à tricoter chaîne et procédé destiné à la fabrication de produits tricotés à chaîne

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JP (2) JP7529772B2 (fr)
CN (2) CN114364833B (fr)
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WO (2) WO2021053011A1 (fr)

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DE2457950A1 (de) * 1974-12-07 1976-06-16 Schlafhorst & Co W Mehrzweckwirkmaschine
DD120669A1 (fr) 1975-07-10 1976-06-20
DE29516290U1 (de) * 1995-10-13 1997-02-06 Liba Maschinenfabrik Gmbh, 95119 Naila Multibar-Kettenwirkmaschine mit Servomotorantrieb für die Legebarren
DE29811470U1 (de) * 1998-06-26 1998-08-20 Karl Mayer Textilmaschinenfabrik Gmbh, 63179 Obertshausen Kettenwirkmaschine
US6289703B1 (en) * 1998-10-26 2001-09-18 Liba Maschinenfabrik Gmbh Rashel machine with a stroke device for a guide bar assemblage
DE10243398A1 (de) * 2001-09-20 2003-04-10 Cetex Chemnitzer Textilmaschin Antriebseinrichtung für eine mit Wirkwerkzeugen besetzte Barre einer Wirkmaschine
DE10349417B3 (de) 2003-10-21 2005-08-04 Karl Mayer Textilmaschinenfabrik Gmbh Kettenwirkmaschine

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GB245928A (en) * 1925-01-02 1926-01-21 William Henry Claude Spencer Improvements in or relating to circular knitting machines
DE547740C (de) * 1929-12-05 1932-03-30 Internationaler Maratti Maschi Rundkettenwirkmaschine
US2144018A (en) * 1936-12-02 1939-01-17 Celanese Corp Knitting machine
US2682163A (en) * 1949-11-17 1954-06-29 Aaron S Staff Trick plate
US2810278A (en) * 1953-03-09 1957-10-22 Kidde Mfg Co Inc Sinker assembly for latch needles
DE1174010B (de) 1955-02-04 1964-07-16 Hobourni F N F Ltd Abzugsvorrichtung fuer flache Ketten-wirkmaschinen mit einer Aufwickelwalze und einem Abzugswalzenpaar
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DE2524020C3 (de) * 1975-05-30 1983-11-03 Liba Maschinenfabrik Gmbh, 8674 Naila Wirkmaschine
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CS248403B1 (en) * 1984-06-25 1987-02-12 Jan Jelinek Circular knitting frame for pile goods production
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EP3276062B1 (fr) 2016-07-28 2018-07-04 Karl Mayer Textilmaschinenfabrik GmbH Procede de production d'un tricot avec un metier a tricoter a chaine et metier a tricoter a chaine
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Publication number Priority date Publication date Assignee Title
DE2457950A1 (de) * 1974-12-07 1976-06-16 Schlafhorst & Co W Mehrzweckwirkmaschine
DD120669A1 (fr) 1975-07-10 1976-06-20
DE29516290U1 (de) * 1995-10-13 1997-02-06 Liba Maschinenfabrik Gmbh, 95119 Naila Multibar-Kettenwirkmaschine mit Servomotorantrieb für die Legebarren
DE29811470U1 (de) * 1998-06-26 1998-08-20 Karl Mayer Textilmaschinenfabrik Gmbh, 63179 Obertshausen Kettenwirkmaschine
US6289703B1 (en) * 1998-10-26 2001-09-18 Liba Maschinenfabrik Gmbh Rashel machine with a stroke device for a guide bar assemblage
DE10243398A1 (de) * 2001-09-20 2003-04-10 Cetex Chemnitzer Textilmaschin Antriebseinrichtung für eine mit Wirkwerkzeugen besetzte Barre einer Wirkmaschine
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Publication number Publication date
JP7529772B2 (ja) 2024-08-06
CN114364833A (zh) 2022-04-15
WO2021053011A1 (fr) 2021-03-25
EP3795729A1 (fr) 2021-03-24
CN114364833B (zh) 2023-10-03
EP3795730B1 (fr) 2022-11-02
WO2021053014A1 (fr) 2021-03-25
EP3795729C0 (fr) 2023-06-07
JP2022548383A (ja) 2022-11-18
JP2022548384A (ja) 2022-11-18
EP3795729B1 (fr) 2023-06-07
PT3795730T (pt) 2023-01-05
CN114375354A (zh) 2022-04-19

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