US3834189A - Warp knitting machine - Google Patents

Warp knitting machine Download PDF

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Publication number
US3834189A
US3834189A US00342043A US34204373A US3834189A US 3834189 A US3834189 A US 3834189A US 00342043 A US00342043 A US 00342043A US 34204373 A US34204373 A US 34204373A US 3834189 A US3834189 A US 3834189A
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US
United States
Prior art keywords
thread
weft
warp knitting
knitting machine
laying device
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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.)
Expired - Lifetime
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US00342043A
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English (en)
Inventor
H Kamp
W Wilms
V Reichardt
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.)
Oerlikon Textile GmbH and Co KG
Original Assignee
W Schlafhorst AG and Co
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Filing date
Publication date
Application filed by W Schlafhorst AG and Co filed Critical W Schlafhorst AG and Co
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Publication of US3834189A publication Critical patent/US3834189A/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B23/00—Flat warp knitting machines
    • D04B23/12—Flat warp knitting machines with provision for incorporating unlooped wefts extending from selvedge to selvedge

Definitions

  • a warp knitting machine particularly of the Raschel type, is provided with a device for inserting a weft thread into the knitted loops wherein a crank-shaped thread laying device is provided with a thread guide which is operable to undo the twist which occurs during the revolving movement of the thread laying device, thereby making it possible to draw, for example, two weft threads, which may be of different color or composition, simultaneously from the weft thread supply reels.
  • a weft thread storer is provided which consists preferably of two storage discs facing each other and which is movable in the direction toward the knitting needles.
  • the warp knitting machines can produce knitted goods whose appearance and properties correspondto those of woven goods, but where the knitted product can be manufactured at substantially higher productionspeeds than the woven product.
  • the aforementioned disadvantages of the known prior art arrangements are overcome by providing a crank-shaped thread-layingdevice with guide channels for simultaneous side by side feed-in of the weft threads and providing that the crank-shaped thread laying device is coupled with a thread guide which is driven by the thread layingdevice and undoes the twist which occurs during one revolution of the thread-laying device.
  • a crank-shaped thread-layingdevice with guide channels for simultaneous side by side feed-in of the weft threads and providing that the crank-shaped thread laying device is coupled with a thread guide which is driven by the thread layingdevice and undoes the twist which occurs during one revolution of the thread-laying device.
  • the guide channels of the thread-laying device are formed by holes which enclose the individual weft threads separately, which pass through the axis of rotation of the thread-laying device and which preferably are arranged in a manner secured against rotation.
  • the thread-laying device is coupled to a thread guide which is driven by the thread-laying device and which undoes the twist of the weft threads.
  • weft change combinations according to the pic a pic system can be carried out with the warp knitting machine according to the present invention.
  • the weft threads are normally fed by the thread guide of the revolving thread-laying device to the holding members of the weft thread storer always in the form of a hairpin loop. In this manner, only two weft threads of the same color and composition can be presented to the knitting tools side by side.
  • transfer tongues are associated with the holding members of the weft thread storer, which are arranged in the vicinity of the edges of the web, in order to engage the loops of the weft threads and place them over more than one holding member.
  • weft thread loop is, for example, inserted over two holding members, there is the possibility of inserting into the gap between these two, and again over two successive holding members, a weft thread of a weft thread loop of a color or composition different from the second fed-in weft thread, which is equivalent to a continuous change from weft thread to weft thread.
  • the transfer tongues can be provided in a particularly advantageous manner with contact contours for keeping the weft threads separate.
  • FIG. 1 is an elevational view, partly in section, showing the essential parts of the warp knitting machine according to one embodiment of the invention.
  • FIG. 2 is a horizontal, cross-sectional view taken through the bearing of the crank-shaped, thread-laying device shown in FIG. 1.
  • FIG. 3 is a view looking in the direction of arrow II in FIG. 2.
  • FIG. 4 is a perspective view of the thread-laying device.
  • FIG. 5 is a front view looking in the direction of arrow IV in FIG. 4 and showing the thread guide which undoes the twist of the weft threads.
  • FIG. 6 is a side view of the thread guide shown in FIG. 5.
  • FIG. 7 is a perspective view showing the thread storer, the thread-laying device, and one of the mechanisms for effecting movement of the transfer tongues.
  • FIG. 8 is a perspective view similar to FIG. 7, but excluding the mechanism for effecting transfer of'the tongues and showing another position of the threadlaying device.
  • FIG. 8a is a sectional view of the thread-laying device shown in FIG. 8 but in a different operating position.
  • FIGS. 9 to 13 are perspective views of the thread storer with transfer tongues and thread-laying device in different operating positions.
  • FIG. 1 a warp knitting machine having a side frame 1, partly shown, and knitting tools, which consist essentially of needle bars 2, sinker bars 3, knocking-over bars 4 and guide bars 5.
  • a section of the knitted goods is indicated at 6 next to the knocking-over bars 4.
  • a crank-shaped, thread-laying device 7 having a counterweight 7 Disposed between the latter device and the knitting tools is a weft thread storer 8.
  • FIG. I only one of two opposing storage discs 9 with its holding members 10 can be seen.
  • the storage disc 9 is mounted on a shaft II which is driven synchronously with the knitting speed in the direction of the arrow 12 in a known manner.
  • the thread-laying device 7 has a tubular shaft 13 which is rotatably supported in a flanged sleeve 14 which is firmly connected to a cross beam 15 and which is rotated also synchronously with the knitting speed by a disc 16 through drive means 17.
  • a section of a shaft 19 passes through the tubular rotating shaft 13.
  • the shaft section 19 is fastened to an am 18 and is provided, in the example of the illustrated embodiment, with two holes 20, 21 for two different weft threads 22 and 23.
  • the two holes 20, 21 are stationary and disposed horizontally side by side. However, for the purposes of illustration and to show the two holes 20 and 21 more clearly, such holes 20, 21, are shown as if they were rotated and thereby on top of each other.
  • the weft threads 22 and 23 are drawn off from weft thread supply reels 24 and 25, the thread ends of which are tied to the thread beginnings of reserve spools 26, 27, thereby providing a continuous supply of the weft threads.
  • the weft thread supply spools are accommodated in stationary position in a creel 28. Interference between the weft threads running off the spools is prevented by an anti-ballooning baffle 29.
  • the thread-laying device 7 has one end thereof provided with an angled-off end arrangement serving as a thread guide 31.
  • the thread guide 31 consists, in the example of the illustrated embodiment, of two threadguiding gears of which only the thread-guiding gear 32 is shown in FIG. 1. During a single revolution of the thread-laying device 7, a single revolution is also imparted to the thread-guiding gear 32. Specifically, the
  • FIG. 2 is a horizontal crosssectional view, and it will be understood that the two holes 20, 21 are situated horizontally side by side.
  • the two holes 20, 21 serve as the guide channels for the thread. Between the two exit openings 20a and 21a of the two holes 20, 21 is arranged a bead-like elevation or protrusion 101 which lifts the thread 22 over the thread 23 when the thread-laying device 7 rotates. This may also be clearly seen in FIG. 3.
  • the crank-shaped thread-laying device 7 with its counterweight 7' can again be seen as well as the holes 20, 21 which serve as the guide channels for the weft threads.
  • the thread-laying device 7 is provided with the thread guide 31 which consists of the two threadguiding gears 32 and 33.
  • the weft thread 22 first passes through the guide eye 34 of the thread-guiding gear 32, then through the guide eye 36 of the thread-guiding gear 33 and on to the holding members of the thread storer which is not shown in FIG. 4.
  • the weft thread 23 runs first through the guide eye 35 of the thread-guiding gear 32 and then through the guide eye 37 of the thread-guiding gear 33.
  • the guide eyes 34, 35 are disposed at an angle of rotation which is different from that of the guide eyes 36 and 37. Such a difference in the angular position of the guide eyes with respect to each other facilitates and is advantageous for improved insertion into the holding members of the weft thread storer (not shown in FIG. 5).
  • FIG. 7 the thread-laying device 7 which is rotated around its circular path in the direction of the arrow 46, is shown in a position in which the thread guide 31 is disposed in the vicinity of the storage disc 9.
  • FIG. 7 shows particularly clearly how the weft threads 22 and 23 coming out of the holes 20 and 21 of the shaft section 19 are fed to the thread guide 31 along the threadlaying device 7.
  • the weft threads 22 and 23 first pass through the guide eyes 34 and 35 of the thread-guiding gear 32, from then through the guide eyes 36 and 37 of the thread-guiding gear 33, and finally on to the holding members of the storage disc 9.
  • the two thread-guiding gears 32 and 33 have the same number of teeth as have the miter gears 41 and 42, and, since the discs 38 and 40 also have the same diameter, the thread-guiding gears 32 and 33 execute one revolution in the direction of arrows 47 and 48 for one revolution of the thread-laying device 7.
  • the twist in the weft threads 22 and 23 formed during each revolution of the thread-laying device 7 is undone. This process also becomes particularly clear in the following figures which show individual phases and operational steps of the rotation of the thread-laying device.
  • the transfer tongue 45 has contact contours 49 and 50 which keep the weft threads separated and aid in the insertion of the weft threads about the predetermined number of holding members 10.
  • the transfer tongue 44 associated with the storage disc 9 is likewise provided with contact contours 51 and 52 in a manner similar to the transfer tongue 45.
  • An actuating mechanism is provided to impart a rotary and swinging motion to the transfer tongues 44 and 45.
  • An actuating mechanism 53 for the transfer tongue 45 located in front of the storage disc 9 is shown in detail in FIG. 7.
  • the individual parts of the mechanism 53 are shown in FIG. 7 in a simplified side view.
  • Cams 56 and 57 of the actuating mechanism 53 are mounted on shafts 54 and 55 which are driven synchronously with the knitting speed during the operation of the machine and which are, therefore, also synchronously operable with the rotational speed of the thread-laying device 7 as well as that of the thread storer 8.
  • the holding members 10, 10 are rotationally advanced one pitch in the direction of the arrow 12 with the knitting speed, that is, at the speed with which the rows of stitches are formed. Since with each revolution of the thread-laying device 7, four weft thread lengths are transferred to the holding members in the example of the illustrated embodiment, two exactly opposite holding members 10, 10 advance four pitches during one revolution of the thread-laying device 7. Accordingly, in the case of the illustrated embodiment, the rotational speed of the thread-laying device 7 is only one quarter of the knitting speed.
  • the cams 56 and 57 are driven at the same speed of rotation as the thread-laying device 7 in the direction of the arrows 58 and 59.
  • the cam 56 determines the progress of the rotary motion of the transfer tongue 45 about a post 60
  • the cam 57 determines the swing of an arm 61 about the shaft 11.
  • the transfer tongue 45 is connected, that is, secured against rotation, with a disc 62 through the post 60.
  • the disc 62 is driven by a drive means 63 from another disc 64 which in turn is firmly connected with a gear 65.
  • the gear 65 in turn is in engagement with a rack 66, and a stroke movement is transmitted to the rack 66 by means of an angle lever 68 pivoted about a fulcrum 67.
  • the biasing action of a tension spring 70 biases a roller 69 on the angle lever 68 against the outer diameter of the cam 56.
  • a swinging motion of the arm 61 is produced, starting from the cam 57, via a lever 73 which is pivoted about a post or pin 74 and which, under the biasing action of a tension spring 71, rests with its roller 72 against the cam 57.
  • the lever 73 has an elongated hole 80 which receives a pin 76 on a guide member 75.
  • FIG. 8 shows the thread-laying device 7 with the thread guide 31 having been rotated further in its rotational path relative to the position shown in FIG. 7.
  • FIG. 8a shows a section of the thread-laying device 7 with the thread guide 31 shortly prior to reaching the position shown in FIG. 8.
  • thread-guiding gears 32'and 33 with their guide eyes 34 to 37, the positions of the two weft threads 22 and 23 are interchanged.
  • the thread-guiding gears 32, 33 which are driven in meshed relationship and which rotate synchronously with the thread-laying device 7, ensure the undoing of the thread twist each time at the same point of the rotary path.
  • the dome-shaped elevation or projection 102 is not shown in FIG. 8 and in the figures which follow.
  • FIG. 10 indicates the end of this process and shows how the weft thread 22 was placed around two holding members 10' and the weft thread 23 likewise around two holding members 10. Both weft threads 22, 23 were placed around the holding members 10, partially stretching in the process, in such a manner that a weft thread 22 is always followed by a weft thread 23. In this manner, the possibility is provided to present to the knitting tools individual lengths of two different but simultaneously drawn-off weft threads in continuous alternation as is characteristic for pic a pic insertion.
  • FIG. 11 shows the transfer tongue 45 associated with the storage disc 9' after such transfer tongue 45 has returned to its starting and loading position for taking over the weft threads at the next revolution of the thread-laying device 7.
  • the insertion scheme for the weft threads 22 and 23 on the weft thread storer 8 filled with weft threads can further be seen particularly clearly.
  • the transfer tongue 44 has also fed weft threads 22 and 23 into the gaps between the holding members 10 of the storage disc 9.
  • the thread-laying device 7 has been advanced by 180 relative to the position shown in FIG. 8.
  • FIG. 12 shows a further phase in the motion process of the transfer tongue 44 and indicates how the weft threads 22 and 23 are'lifted, after being inserted into the first gaps, over further holding members 10 and are fed to the succeeding gaps.
  • the contact contours 51, 52 provide secure guidance and separation of the two weft threads.
  • FIG. 13 shows the transfer tongue 44 after the latter has completed the insertion of the weft threads 22 and 23 and has swung, with its contact contours 51 and 52, out of the reach of the weft threads. Subsequently, the transfer tongue 44 can swing back into the loading position, as shown in FIGS. 8, 9 and 10, without interference with the weft threads.
  • FIG. l3 shows also the thread-laying device 7 in a position shortly before completing a full revolution, whereby the insertion process for the weft threads described above can be repeated.
  • the crossed weft threads 22, 23 the start of the twisting of these threads can also be clearly seen, the undoing of which then takes place again in the phase of the motion cycle shown in FIGS. 8 and 80.
  • a warp knitting machine in which a weft thread is inserted into knitted loops, comprising knitting elements, a crankshaped thread-laying device, a weft thread storer movable in a direction towards said knitting elements and disposed between the latter and said thread-laying device, mounting means rotatably mounting said crank-shaped thread-laying device, said mounting means having channels for feeding weft threads to said thread-laying device, and thread guide means carried on said thread-laying device and including means for undoing the twist of the weft thread produced during one revolution of the thread-laying device.
  • a warp knitting machine according to claim 1 wherein said mounting means comprises a shaft, said channels for feeding said weft threads being disposed in side by side relationship in said shaft.
  • a warp knitting machine wherein the axis of said shaft is coincident with the axis of rotation of said thread-laying device, said shaft being secured against rotation, and said channels being disposed parallel to the axis of said shaft.
  • a warp knitting machine wherein at least two spaced channels are provided in said shaft, and separation means are provided on the end of said shaft defining the exit opening of said channels, said separation means causing one weft thread to pass over the other weft thread during rotation of said thread-laying device.
  • a warp knitting machine according to claim 4 wherein said separation means comprises protrusion on the exit end of said shaft, said protrusion being disposed between the two exit openings of said at least two spaced channels.
  • a warp knitting machine according to claim 5 wherein said protrusion has an arcuate configuration.
  • said thread guide means comprises threadguiding gears, means driving said thread guiding gears for rotation in opposite direction, each of said thread guiding gears having a pair of guide eyes through which said weft threads pass.
  • a warp knitting machine wherein said thread-guiding gears mesh with one another, said guide eyes comprising channels in said gears extending generally parallel to the axis of rotation of each gears.
  • a warp knitting machine wherein two spaced guide eyes are provided on one of said thread-guiding gears, and protruding means are provided on the side of said one gear for causing one weft thread to pass over the other weft thread during rotation of said gears.
  • said weft thread storer comprises holding members disposed adjacent both edges of the web and actuating means operable to engage the weft threads as in an opposite direction away from said holding members.
  • crank-shaped thread-laying device comprises an elongated crank arm, said thread guide means comprising a pair of thread-guiding gears rotatably mounted on said crank arm about axes perpendicular to the axis of rotation of said crank arm.
  • a warp knitting machine according to claim 13 wherein drive means are provided on said crank arm for rotating said thread-guiding gears.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Knitting Machines (AREA)
US00342043A 1972-03-17 1973-03-16 Warp knitting machine Expired - Lifetime US3834189A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722212935 DE2212935A1 (de) 1972-03-17 1972-03-17 Kettenwirkmaschine
DE2245115A DE2245115A1 (de) 1972-03-17 1972-09-14 Kettenwirkmaschine

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US3834189A true US3834189A (en) 1974-09-10

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US00342043A Expired - Lifetime US3834189A (en) 1972-03-17 1973-03-16 Warp knitting machine

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US (1) US3834189A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS496240A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DD (1) DD103280A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (2) DE2212935A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1396222A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT979875B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255947A (en) * 1977-08-17 1981-03-17 Karl Mayer Textil-Maschinenfabrik Gmbh Warp knitting machine with weft insertion apparatus
US20060225465A1 (en) * 2005-02-25 2006-10-12 Karl Mayer Malimo Textilmaschinenfabrik Gmbh Device for feeding fiber bands to a knitting machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0757663B2 (ja) * 1992-06-23 1995-06-21 英機 福崎 平板体の集積装置
JPH0757662B2 (ja) * 1992-06-23 1995-06-21 英機 福崎 平板体の集積方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609997A (en) * 1968-09-04 1971-10-05 Hans Joachim Furst Warp knitting machine
US3616656A (en) * 1968-07-19 1971-11-02 Reiners Walter Warp knitting machine
US3620048A (en) * 1968-09-27 1971-11-16 Reiners Walter Weft supplying device for a warp knitting machine
US3643471A (en) * 1968-07-11 1972-02-22 Reiners Walter Warp knitting machine
US3648459A (en) * 1969-07-26 1972-03-14 Schlafhorst & Co W Warp knitting machine, particularly raschel machine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3643471A (en) * 1968-07-11 1972-02-22 Reiners Walter Warp knitting machine
US3616656A (en) * 1968-07-19 1971-11-02 Reiners Walter Warp knitting machine
US3609997A (en) * 1968-09-04 1971-10-05 Hans Joachim Furst Warp knitting machine
US3620048A (en) * 1968-09-27 1971-11-16 Reiners Walter Weft supplying device for a warp knitting machine
US3648459A (en) * 1969-07-26 1972-03-14 Schlafhorst & Co W Warp knitting machine, particularly raschel machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4255947A (en) * 1977-08-17 1981-03-17 Karl Mayer Textil-Maschinenfabrik Gmbh Warp knitting machine with weft insertion apparatus
US20060225465A1 (en) * 2005-02-25 2006-10-12 Karl Mayer Malimo Textilmaschinenfabrik Gmbh Device for feeding fiber bands to a knitting machine
US7458236B2 (en) 2005-02-25 2008-12-02 Karl Mayer Malimo Textilmaschinenfabrik Gmbh Device for feeding fiber bands to a knitting machine

Also Published As

Publication number Publication date
DE2212935A1 (de) 1973-09-20
JPS496240A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-01-19
GB1396222A (en) 1975-06-04
IT979875B (it) 1974-09-30
DD103280A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-01-12
DE2245115A1 (de) 1974-03-21

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