WO2020127930A1 - Aiguille servant à la formation de mailles sur un métier à tricoter ou un métier à mailles jetées, et métier à tricoter ou métier à mailles jetées comprenant plusieurs aiguilles de ce type - Google Patents

Aiguille servant à la formation de mailles sur un métier à tricoter ou un métier à mailles jetées, et métier à tricoter ou métier à mailles jetées comprenant plusieurs aiguilles de ce type Download PDF

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Publication number
WO2020127930A1
WO2020127930A1 PCT/EP2019/086614 EP2019086614W WO2020127930A1 WO 2020127930 A1 WO2020127930 A1 WO 2020127930A1 EP 2019086614 W EP2019086614 W EP 2019086614W WO 2020127930 A1 WO2020127930 A1 WO 2020127930A1
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WO
WIPO (PCT)
Prior art keywords
needle
base body
transmission member
knitting
needles
Prior art date
Application number
PCT/EP2019/086614
Other languages
German (de)
English (en)
Inventor
Ulrich Hofmann
Original Assignee
Ulrich Hofmann
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ulrich Hofmann filed Critical Ulrich Hofmann
Publication of WO2020127930A1 publication Critical patent/WO2020127930A1/fr

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/02—Knitting tools or instruments not provided for in group D04B15/00 or D04B27/00
    • D04B35/06—Sliding-tongue needles
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/06—Sinkers
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B15/00—Details of, or auxiliary devices incorporated in, weft knitting machines, restricted to machines of this kind
    • D04B15/18—Dials

Definitions

  • the present invention relates to a needle, in particular a needle combined from steel strip elements, for stitch formation on a knitting or warp knitting machine and a knitting or warp knitting machine with several such needles.
  • the invention is a further development of the European patent application EP 3 290 555 A1 dated 02.09.2016, which provides an advantageous needle for stitch formation on a knitting or warp knitting machine, which has a base body, a needle hook and a transmission link or tongue link, which is relative in the longitudinal direction of the base body is movable to the base body and the needle hook and is set up to close and open the needle hook by a relative movement to the base body.
  • the needle also has a connecting element which engages around the transmission element or tongue element at least along part of the length of the transmission element or tongue element, so that the relative movement of the transmission element or tongue element to the base body is guided by the connecting element, the connecting element being connected to an upper section of the Basic body is connected.
  • the needle described in EP 3 290 551 A1 makes it possible to effect the control function for the opening and closing movement of a transmission element outside the needle movement system. Another advantage is to influence the positioning of a cladding thread in the needle hook to be able to take. Furthermore, the described structure of the functional unit needle with a longitudinal transmission link is compact, so that no dirt particles can penetrate within the system.
  • the connecting element described in EP 3 290 551 A1 is a U-shaped connecting element, the transmission member or tongue member being received in the recess of the U-shaped connecting element.
  • the U-shape of the connecting element encompasses the transmission link.
  • the material of the U-shaped connecting element it is necessary for the material of the U-shaped connecting element to be extremely malleable or flexible on the one hand in order to enable the extremely small bending radii, but on the other hand to be an extremely hard and therefore wear-resistant steel.
  • both requirements can only be met to a limited extent.
  • the problem with steel strips, which are made of hardened steel, is that the small bending radii of the U-shaped connecting element are difficult to produce and that there is often a cracking or even a breakage of the material at the bending points.
  • the invention is based on the object of providing a needle for stitch formation on a knitting or warp knitting machine which makes it possible to simplify the structural design, in particular the manufacture, of the needle, while at the same time ensuring high wear resistance of the needle or the functional unit shall be. Furthermore, the needle provided is to form a functional unit which is firmly connected to one another and is easy to handle. This object is achieved by a needle for stitch formation on a knitting or warp knitting machine according to claim 1. Furthermore, the invention provides a knitting or warp knitting machine with several such needles according to claim 10. Preferred developments of the invention are given in the dependent claims.
  • one of the core ideas of the present invention is to provide a needle for stitch formation on a knitting or warp knitting machine, in which a separate connecting element to be produced can be dispensed with, and instead a base body of the needle has at least one guide section provided in a side wall, which is set up for this to contact a transmission member at least along a part of the length of the transmission member to fix and guide the transmission member in a depth direction of the needle slot which extends perpendicular to the longitudinal direction of the base body.
  • a needle for stitch formation on a knitting or warp knitting machine has a base body, a needle hook, and a transmission member which is movable in the longitudinal direction of the base body relative to the base body and the needle hook and is set up for this by this relative movement to close and open the base body of the needle hook.
  • the base body has two opposite side walls, which are spaced apart from one another by a gap and thereby form a needle slot in which the transmission member is at least partially is included to guide the relative movement of the transmission member to the base body.
  • the base body has at least one guide section provided in one of the side walls, which is set up to contact the transfer member along at least part of the length of the transfer member, in order to move the transfer member in a depth direction of the needle slot, which extends perpendicular to the longitudinal direction of the base body, to fix.
  • the construction of the generic needle or the functional unit described above can be simplified, in particular the provision of the connecting element which is difficult to manufacture can be dispensed with, as a result of which the manufacturing costs of the needle and the maintenance costs and retrofitting costs of knitting or warp knitting machines can be reduced.
  • the new construction of the needle as a functionally connected functional unit described above enables a compact, easy-to-use unit to be created. In this case, the structure of the functional unit needle with the longitudinal transmission link is compact, so that no dirt particles can penetrate within the system.
  • the base body and the two opposite side walls are integrally formed, or the base body is formed in three parts, namely from a central part and two separate side walls which are attached to the central part.
  • the two side walls can be attached to the central part by gluing or welding, in particular laser welding.
  • the at least one guide section is defined by an incision running in the longitudinal direction of the base body.
  • the guide section forms a guide tab which is bent into the needle slot and which is designed to come into contact with the transfer member on one of its side surfaces which faces the transfer member received in the needle slot.
  • the inventive fixed reception of the transmission member in the base body of the needle enables easily replaceable needle elements, thereby creating types of knitting machines that expand the area of application for double-surface circular knitting machines to flat knitting machines in designs from coarse to very fine.
  • the longitudinal movement of the transfer member or tongue member in the needle can occur during the needle movement by stopping in a phase-limited manner on an engaging element, such as an incision or hump, of the transfer member or tongue member outside of the knitting systems by means of holding blades, which are arranged, for example, around a needle cylinder.
  • the transfer finger height is advantageous due to a offset Larger and more stable and its underside can also be trained for the exact positioning of a plating thread.
  • plating forms the basis for a large number of types of patterns. Two different threads must be fed separately to the needles and one cover the basic thread as cover thread. This requires an exact positioning of the threads in the needle, which must be preserved when the stitch is formed.
  • the safety here is lower than with latch needles. The result was that this type of needle could not prevail in knitting machines. This shows which imponderables are to be reckoned with when threading in and how small differences that cannot be understood play a decisive role. It can only be assumed that the tongue shank widened for storage is important as a characteristic.
  • the design option of the widened transmission finger favors the fulfillment of the high requirement of uniform positioning of the separately fed threads in the needle hook.
  • the base body has a second guide section provided in one of the side walls, which is defined by a second cut running in the longitudinal direction of the base body, the two guide sections preferably being provided on the same side wall.
  • the two guide sections are arranged spaced apart from one another in the longitudinal direction by a predetermined distance, and the two incisions are preferably cut into the respective side wall in opposite directions in the longitudinal direction of the base body.
  • the at least one guide section is arranged in a region of the side wall, so that when the needle hook is closed, the at least one guide section can still contact the transmission member.
  • a notch is provided on the at least one side wall, which has the at least one guide section, from which the incision extends.
  • the needle slot has a depth that extends perpendicular to the longitudinal direction along the depth direction into the needle slot, and the depth is selected so that the transmission member can be received between the base body and the at least one guide section.
  • the needle hook also has two opposite side walls which are spaced apart from one another by a gap and thereby form an extension of the needle slot in which the Transmission member is at least partially received, wherein the base body and the needle hook are preferably integrally formed.
  • the base body in particular a central part (lc) of the base body (1), has an upper section which directly adjoins the needle hook in the longitudinal direction of the base body, a central section which directly adjoins in the longitudinal direction of the base body connects the upper section, and a needle foot, which adjoins the central section in the longitudinal direction of the base body.
  • the needle foot can directly adjoin the central section in the longitudinal direction of the base body.
  • the upper section can have a smaller lateral extent perpendicular to the longitudinal direction of the base body than the central section, so that a step is formed between the upper section and the central section.
  • the connecting element can be arranged completely above the step in the direction from the needle foot to the needle hook.
  • the middle section can have a smaller lateral extent perpendicular to the longitudinal direction of the base body than the needle foot.
  • the step can extend perpendicular to the longitudinal direction of the base body.
  • the relative movement of the transmission member to the base body can take place completely above the step, ie above the step in the direction from the needle foot towards the needle hook.
  • the needle according to the invention can be set up so that the step forms a stop surface for a lower end surface of the transmission member.
  • the relative movement of the transmission member to the base body downwards, that is, in the direction of the needle foot, can be limited by the step.
  • the transmission member has an engagement element for engagement with an engagement unit of the knitting or warp knitting machine.
  • the engagement element is a recess or a projection, in particular a hump, which extends in the direction perpendicular to the longitudinal direction of the base body.
  • the needle hook can be formed in one piece with the base body.
  • the base body has the needle hook.
  • the needle hook can be formed integrally, in particular in one piece, with the connecting element.
  • the needle hook can have two halves, wherein the two halves can be separated from one another at least in regions by a gap. The two halves can be completely separated from one another by the gap.
  • the two halves of the needle hook may be formed such that a needle curve of each half extends in a plane that is parallel to the plane in which a needle curve of the needle hook extends.
  • the gap can lie in a plane or extend in a plane which is parallel to the plane in which the needle curve of the needle hook extends.
  • the transmission member has at an upper end thereof in the direction from the needle foot to the needle hook to a transmission finger, which is configured to close and open the needle hook by the relative movement of the transmission member to the base body.
  • the transmission finger can have an upper section and a lower section which directly adjoins the upper section in the longitudinal direction of the base body.
  • the upper section of the transfer finger can have a smaller lateral extent perpendicular to the longitudinal direction of the base body than the lower section of the transfer finger, so that a step is formed between the upper section and the lower section.
  • the needle can be set up so that the step of the transfer finger forms a stop surface for a lower end face of the needle hook, so that the relative movement of the transfer member to the base body upwards, that is to say in the direction of the needle hook, is limited by the step.
  • the present invention relates to a knitting or warp knitting machine which has a plurality of needles according to the invention.
  • the knitting or warp knitting machine according to the invention offers the advantageous effects which have already been explained above for the needle according to the invention.
  • the plurality of needles can be arranged in succession in the knitting or warp knitting machine.
  • the knitting or Warp knitting machine can only have needles according to the invention.
  • the knitting or warp knitting machine can furthermore have an engagement unit for engagement with engagement elements of the transmission members of the needles.
  • the engagement unit may have a plurality of projections and recesses which are alternately arranged along the direction along which the plurality of needles are arranged in succession in the knitting or warp knitting machine.
  • the projections and recesses can each extend in a direction that is essentially perpendicular to the arrangement direction of the needles and / or essentially perpendicular to the longitudinal direction of the base body of the needles.
  • the engagement unit has a holding rocker or the engagement unit is a holding rocker.
  • the knitting or warp knitting machine can furthermore have a rotatable needle cylinder having a knock-over edge, the plurality of needles being arranged in the needle cylinder.
  • the knitting or warp knitting machine can furthermore have holding elements engaging in the needle gaps present between the needles, in particular in the form of a spring washer, which form a gap to the knock-over edge, which allows newly formed stitches to slip through and, when the needles are advanced further, the stitches at Teeing edge stops.
  • the holding elements in particular the spring washer, can be rotatably mounted so that the holding elements, especially the spring washer, can be rotated together with the needle cylinder.
  • the holding elements, in particular the spring washer can be rotated together with the needle cylinder by their engagement in the needle gaps.
  • FIGS. 1 to 37 An embodiment of the invention is explained with reference to FIGS. 38 to 45.
  • FIGS. 46 to 48 also show the representation of the stitch-forming center of the knitted fabric production of a warp knitting machine. Unless otherwise stated, the figures are all executed on an enlarged scale approximately 5: 1.
  • Figures 1 to 4 representations of the structure of a compact functional unit knitting machine with longitudinal
  • Transmission link or tongue link based on a less specialized needle technology and expanded possibilities for the construction of knitting machines with additional fields of application, namely
  • Fig. 1 shows the side view and top view of the needle body
  • Fig. 3 is a side view and top view of the
  • FIG. 4 shows the assembled functional unit in the closed position of the transfer finger 12 with the needle hook
  • Fig. 5 shows the enlargement of the front part of the functional unit longitudinal tongue needle with indicated additional
  • Fig. 6 is an illustration in an enlarged view of the thread run-in of different phases of base and plating thread in the needle hook 2;
  • Fig. 7 is a 3D representation of the section of a
  • FIGS. 9 to 13 basic representations of the stitch formation in a section through the needle channel
  • Fig. 12 shows the forward movement of the needle 1, in which the
  • Fig. 13 shows the common advance of the needle 1 and
  • Transmission member 11 for opening the needle hook 2 during the advancement of the needle 1;
  • Fig. 15 shows a detail in side view and the top view of the needle cylinder cutout with the engagement of
  • Fig. 17 shows a detail in side view and the top view of the needle cylinder cutout with the engagement of the
  • Circular knitting machine which instead of from the outside individually
  • controlled sinkers has a spring washer arranged above the cylinder, the turns of which engage somewhat in the spaces between the needles from the needle back, so that when the needles are pushed forward, the knitted fabric on the
  • FIGS. 21 to 25 basic representations of the usual board control in a section through the needle channel and the attached board ring:
  • Fig. 25 shows the board which has moved into the front end position, has pushed the old stitch away and has enclosed the newly forming stitch in the board incision, so that it moves from the
  • 26 shows a basic illustration of the thread inlet after the thread feed into the needle hook 2 by a guide lug 29 on the board P;
  • Figures 31 to 33 the function of the stitch pusher 22 with advancing and stopping the stitch loop at the
  • Figures 34 to 37 control the stitch slide 22 by means of spring steel guide band 31 which is mounted in the segment control attachment 29 in the housing 32 and which engages in a cutout 30 at the rear end of the stitch slide 22 and causes its backward movement, while the forward movement due to the action of the sliding disc 33 on the end of the
  • FIG. 38 to 45 an embodiment of the needle according to the invention.
  • Figures 46 to 48 the representation of the stitch-forming
  • FIGS. 18 to 20 are illustrations of the stitch formation of single circular knitting machines.
  • reed needles are provided in the case of latch needles between the needles in a sinker ring around the needle cylinder, which holds back the last stitch hanging in the hook when the needle advances at the knock-over edge and guides the newly forming stitch over the hook.
  • FIGS. 18 to 20 is a clearly structured construction of a single knitting machine without sinkers.
  • the turns of a spring washer reach with a pitch corresponding to the needle pitch above the knock-off edge of the needle cylinder from the needle back into the spaces between the needles.
  • the smooth-running bearing point (ball bearing) for accommodating horizontal guide segments for fixing the spring washer is provided on a bearing journal that runs downwards Hold down movement.
  • FIG. 1 shows a side view and a top view of the needle body or base body 1, which has the needle-specific features needle hook 2, needle breast 3, needle slot 4. Behind it is the step 5, which extends up to the end stop 6 for the transmission member 11 (FIG. 2) in its rear position.
  • the needle hook 2 contains a top for receiving the transfer finger 12.
  • Lateral fixing recesses 7 are provided for the assembly and attachment of a connecting bracket 8 (Fig.3) with its attachment zone of the open legs 9.
  • Fig. 2 is also a side view of the transmission member 11, which forms a flat component without deposits up to the end face 15 a prismatic body, which together with the needle body 1 within the The needle channel completely fills it and merges into the transfer finger 12 with the step 12a at the front.
  • the holding incision 13 is provided in the vicinity of the end face 15.
  • Fig. 3 is a side view and a top view of the U-shaped connecting bracket 8. This has a head 10 and the attachment zone of the open legs 9. In addition, Fig. 3 shows schematically a welding point through which the connecting bracket 8 with the upper Section of the base body or needle body 1 is connected.
  • the transmission member 11 is in the front closed position of the needle hook 2 by the transmission finger 12 due to the abutment of the shoulder 12a on the front edge of the needle hook 2. In this position, thread particles penetrating into the rear end of the transmission member 11 cannot build up. They are pushed to the stop 6 at the opening of the needle hook, where they come out of the needle channel again due to its bevel.
  • FIG. 5 shows the front part of FIG. 4 in an enlargement.
  • the transfer finger 12 widened by the paragraph 12a supports the separate positioning of the plating thread from the base thread for the knitting process of the plating on its underside.
  • the underside can have a guide skid L which guides the plating thread to the underside in the hook 2 and which guides the transfer finger 12 exactly to the middle of the hook.
  • Fig. 6 is a schematic representation of the thread run-in during the plating process in 4 phases.
  • the plating or covering forms the basis for a large number of pattern types.
  • the two different threads need the needles can be fed exactly separately from two thread guides.
  • the cover thread D is fed at an acute angle with respect to the base thread G and, during the relative movement of the needle hook 2, reaches the transfer finger 12 on its underside, ie closer to the needle shaft and to the weft edge, like the base thread G inserted in the needle hook 2.
  • Fig. 7 is the vividly enlarged 3D principle representation for the arrangement of the functional parts for opening and closing movement of the transfer finger 12 relative to the needle hook 2.
  • the needle cylinder N contains the puncture 16 in the channel side walls in front of which the steel band section 17 is arranged and in the cycle of Needle positions, the projections 18, once in the holding incision 13, the other are in operative connection on the end face 15 of the transmission member 11.
  • the channel side walls are hidden for better understanding.
  • the direction of rotation of the cylinder is clockwise.
  • the steel belt section 17 is an example of an engagement unit of the knitting or warp knitting machine.
  • FIG. 8 is a basic illustration of the arrangement of a steel band section 17 at the top of the lock system in a stop recess 20.
  • a steel band cover 25 can also be attached in an unusually glued manner, so that there is a gap in which the steel band section 17 is held under tension.
  • FIGS. 9 to 13 show basic representations of the stitch formation in a section through the needle channel under the action of the steel band section 17 fastened on the top of the lock with the holding projections 18 during the forward and backward movement of the functional unit longitudinal tongue needle on the relative movement of the transmission member 11 to the needle 1.
  • Fig. 9 the needle 1 is in the entry zone of the knitting system.
  • the last stitch is held in the stripping position over the needle breast 3 with the transfer finger 12 (FIG. 10) therein, i.e. the transmission member 11 is in the rear position at the stop 6 of the needle 1 and a new thread is inserted into the needle hook 2.
  • the first holding projection 18 of the steel belt section 17 is located in the holding cut 13 of the transmission member 11.
  • FIG. 11 shows the state in which, by further backward movement of the needle 1 from FIG. 10 to FIG. 11, the holding incision 13 was located over the first gap in the steel band section 17, so that the needle 1 together with the transmission member in the foremost position 11 moved into the culvert position. During this process, the old stitch is thrown off the transfer finger 12, so that a new stitch now hangs in the needle hook 2. Before the movement of the needle 1 backwards, the second holding projection 18 of the steel band section 17 is already above the end face 15 on the transmission member 11. 12 shows the state in which the forward movement of the needle 1 from FIG. 11 to FIG.
  • Fig. 13 shows the final phase, i.e. the state of Fig. 12 after Fig. 13, in which there is no holding projection 18 of the steel band section 17, i.e. Needle 1 and transmission member 11 come together into the expulsion position.
  • the holding incision 13 runs into the holding projection 18 of the steel band section 17 in the next knitting system.
  • FIGS. 14 to 17 illustrate the two different arrangements of the steel band sections 17 on the lock system, the retaining projections 18 of which protrude from the inner surface and are flush with the other. This also causes differences at the front on the transmission element 11 and on the needle cylinder N.
  • the holding projection 18 of the steel band section 17 is in engagement of the holding incision 13 on the transmission member 11 for stopping when the needle 1 moves back, while in FIG. 14 on the right the second holding projection 18 above the end face 15 is the transmission member 11 the advancement of the needle 1 stops.
  • FIG. 15 above shows in a section of the cylinder and the upper lock area the engagement of the holding projections 18 protruding from the inside surface of the lock in the recess 16 of the channel webs of the needle cylinder N.
  • the lower illustration is the top view of the section with a view of the needle channels and the detection the holding projections 18, which protrude into the not visible recess 16 of the side walls.
  • the transmission member 11 has, instead of the holding incision 13, a hump 14 which, in the left-hand figure below and in the right-hand figure above, enters into an operative connection with the holding projections 18 on the steel belt section 17.
  • the holding projections 18 do not protrude beyond the inner surface of the needle lock.
  • a recess 19 is provided below the holding projections 18 in the needle lock.
  • FIG. 17 at the top shows a section of the cylinder and the upper lock area, the retaining projections 18 corresponding to the outer diameter of the needle cylinder above the recess 19 on the needle lock for the forward and backward movement of the hump 14 on the transmission member 11 and the top view of the visible retaining projections 18 the steel belt section 17.
  • FIG. 19 is the top view of FIG. 18 on a guide segment 56 for the spring washer 55 with the representation of the engagement of some turns of the spring washer 55 in the needle gaps.
  • FIG. 20 is a section through the needle cylinder N after the needle 1 has been withdrawn, in which the hump 14 closes the needle hook by resting on the holding projection 18 of the steel band section 17, as can be seen from FIG. 18.
  • FIGS. 21 to 26 are basic representations of the stitch formation of a single circular knitting machine using the sinkers customary there and on the basis of the known machine concept shown in FIG. 20 in a section through the needle channel and the sinker ring attached.
  • Fig. 21 shows the position of the board P to the needle 1 at the beginning of the thread run-in. The last stitch is in the inclusion throat of the board P. Above this, the board P has a guide nose 29 for thread entry into the needle hook 2.
  • the plate P has moved back so far during the return movement of the needle 1 that its leading nose 29 for the thread is still behind the needle hook 2 and the thread comes within the needle hook 2 when it slides past, so that it moves forward the closing of the needle hook 2 by the transfer finger 12 was securely inserted there.
  • the old stitch was removed from the substructure of the inclusion throat until shortly before Took off position and the new thread formed into a loop.
  • the board P was moved back slightly.
  • the needle 1 has already moved forward a little and the board P has assumed its front position, so that after further advancement of the needle 1 to FIG. 21, the new stitch located in the needle hook 2 is held back by the guide nose 29 of the board P and reaches the needle chest 3.
  • Fig. 26 shows on the left the view from the front of the thread guide, how the thread subsequently forms an angle due to the thread retraction during the curling, and on the right as in the side view of the needle hook 2, through the guide lug 29 on the board P, the thread in the Interior of the needle hook 2 is initiated.
  • the recess 16 is located in the side walls of the needle channels below the sinker ring 23.
  • FIG. 28 is a 3D representation of the front view of FIG. 27. It shows how the board slots are arranged between the needle channels.
  • the design of the plate ring 22 with carbon fiber material can be advantageous.
  • 29 is a 3D representation of an advantageous single circular knitting machine with individually controlled sinkers P. through the control cam 27 arranged above the plate ring 23, which can be adjusted radially by means of a control screw 25.
  • FIG. 30 is the 3D principle representation of an RR circular knitting machine with generic needle technology. Instead of the sinker ring, a dial R is provided, in which so-called dial needles are provided on the gap to the cylinder needles. In this way, double-faced knitted fabrics can be produced.
  • the design of the transmission element 11 is shown here with the hump 14 according to FIG. 16.
  • FIGS. 31 to 37 show the use of features of the generic needle also for latch needles.
  • the larger needle path in the stitch formation catches the eye, which affects less systems.
  • the usual sinkers which obstruct the insight into the stitch formation, here it is stitch holders / sliders that enable an accessible machine design.
  • Fig. 31 is a view of the side surface of a stitch shifter 22 which is in its forward position by the forward slide plate 33 of the previous system.
  • the holding lug 24 formed a gap Sp due to the limited upward entrainment by means of the stitch loop to the top edge of the cylinder, so that the old stitch could slip through.
  • the illustrated forward sliding disc 33 is still no longer effectively available from the previous system, so that upon further rotation the spring steel guide strip 31 comes into action in the return cutout 30 until the stitch sliding element 22 reaches its rearward end position shown in FIG. 32.
  • the spring steel guide band 31 has a bulge 34 on the upper side surface under this effect, the retaining lug 24 by means the rocking movement of the base of the shaft is pressed onto the tapping edge A. Thereafter, from the middle of the system, with a further cylinder rotation in the segment control attachment 29, there is no longer a spring steel band housing 32 and the forward sliding disk 33 now comes into action, as is shown in FIG. 33.
  • FIGS. 34 and 35 are additional explanations of the design according to FIGS. 31 to 33 for the segment control attachment 29.
  • This contains the housing 32 with a spring steel guide band 31 and the receptacle of the forward sliding disc 33.
  • the housing 32 is in the central elevation in FIG. 34 Section of the control block 29 shown as a side view.
  • a stitch shifter / holder 22 inserted into the slot ring 23 is also shown as a side view in FIG. 34 at the rear end in its rear position.
  • the spring steel guide band 31 is engaged in the return cutout 30 of the stitch shifter / holder 22, which is in the lower tilting position due to the upward movement of the retaining lug 24.
  • Fig. 35 is the top view of the right-hand slit ring 23 in which the rear region of a stitch shifter / holder 22 is inserted in the slider slot 21 in the reverse position and the view of the fixed segment control attachment 29 without the cover rail 35, so that the housing in the upper half 32 and in the lower half of the forward slide plate 33 is recognizably mounted in the segment control attachment 29.
  • a recess 36 in the housing 32 results in two side webs, the slots 37 of which correspond to the return path of the stitch slider / holder 22 at a distance from the axis of rotation.
  • the illustration also shows that the spring steel guide band 31 protrudes beyond the housing 32 side webs into the area of the forward sliding disk 33 and there the spring steel guide band 31 has a bulge 34 under this effect, the stitch pusher / holder 22 presses with its retaining lug 24 onto the tapping edge A (FIG. 32).
  • 36 is the right partial top view of the side surface of the spring steel guide strip 31, in which the bulge 34 on the upper edge can be seen at the right end.
  • Fig. 37 shows how a spring wire ring 40 is received in a recess of the tapping edge A, which is inserted in a groove on the end face of the cylinder Z, the seat fixation being ensured by the contact lugs 24 being held in phases by contact pressure.
  • FIGS. 46 to 48 show an application example of such needles.
  • 38 is a side view of the central part 1c of the three-part needle body or base body 1. It can also be seen that the central part 1c has an end stop 6 for the transmission member 11 in its rear or lower position.
  • the side wall 3a has the needle-specific features needle hook 2 and needle breast 3.
  • the side walls la and lb of the base body are preferably steel strips with a polished surface.
  • the side walls la, lb can be glued or welded to the central part lc, the welding is preferably carried out using of a laser beam.
  • the needle hook consequently has two halves, the two halves being separated from one another by a gap.
  • the side wall la has two incisions E1 and E2, through which two guide sections 8a, 8b are formed, which are each bent inwards after the connection of the two side walls la, lb to the central part 1c to form guide tabs 8c, the side surfaces of which serve to guide the transmission link described in detail later.
  • the bent tab will also be described later with reference to FIG. 42.
  • the 40 is the side view of the transmission member 11 or the transmission tongue, which has the transmission finger 12 and a bump 14 in the shaft shown below.
  • the lower end face of the transmission member 11 serves as a stop surface with the stop 6 of the central part 1c in order to limit the movement of the transmission member 11 backwards or downwards.
  • the two incisions El and E2 extend in the longitudinal direction L of the needle or of the base body 1, in particular in opposite directions.
  • the upper incision E2 extends from an end face of the side wall la to the rear or, as seen in the figure, downwards.
  • the lower incision E2 extends from a notch to the front or, as seen in the figure, upwards.
  • the two incisions E 1, E 2 and thus the two guide sections 8 a, 8 b are spaced apart from one another by a distance D.
  • the larger the distance D can be designed, the larger one is imaginary guide length of the transmission member 11, whereby its guidance is more stable.
  • FIG. 42 shows a partial view from the right of the three-part main body 1, which illustrates the sandwich-like structure of the main body 1.
  • 42 also shows the needle slot 4 formed by the two side walls 1a, 1b and the guide tab 8c which is bent inward into the needle slot 4. Since the guide tab 8c of the lower guide section 8a extends from the inside to the outside in the direction from bottom to top in FIG. 42, the upward movement of the transmission member 11 received in the needle slot 4 is limited by means of the bump 14.
  • FIGS. 43 to 45 each show the representation of a complete functional unit consisting of the three-part base body 1, having the central part 1c and the two side walls 1a, 1b, and the transmission member 11 accommodated therein in a longitudinally movable manner, FIGS. 43 to 45 each showing different positions of the transmission member .
  • FIG. 43 shows the open position of the needle or the needle hook 2.
  • the transmission member 11 In the position shown, the transmission member 11 is in the rear position or in the lower position as seen in FIG. 43.
  • the lower end face of the transmission element 11 bears against the stop 6 of the central part 1c, as a result of which the movement of the transmission element 11 is limited.
  • FIGS. 44 and 45 each show the closed position of the needle or the needle hook 2.
  • the movement of the transmission member 11 is limited by the contacting of the transmission finger 12 with the needle hook 2.
  • the upward movement is limited by the guide tab 8c of the lower guide section 8a.
  • FIGS. 46 to 48 show the representation of the stitch-forming center of the significant knitting fabric of a warp knitting machine.
  • the needles are not individually movable in needle beds, but are firmly clamped in so-called needle bars in a certain division. All needles move together to form stitches. Patterns that are based on the basic functions of knitting, non-knitting and forming a stitch are not possible here.
  • Parallel to the needle bars, the needle closing elements are provided in a second bar system in the machine. This requires many functional parts in a very small space. The use of the functional needle according to FIGS. 38 to 42 avoids the second bar.
  • Fig. 46 shows the needle bar B in the upper position.
  • the holding rocker 50 received in a bearing rail 51 that is firmly connected to the machine is swiveled in and its holding projection 18 is located under the hump 14 of the transmission tongue 11.
  • the holding rocker 50 can be provided continuously over the entire length over which the needles are arranged.
  • the pivoting movement of the holding rocker 50 is synchronized with the up and down movement of the needles.
  • Fig. 47 the needle bar B has been pivoted back and closed by stopping the hump 14 on the transfer member 11 of the needle hook. Then the holding rocker 50 swung out, so that during the further downward movement of the hump 14 is moved past the holding projection 18, as shown in FIG. 48 in the lower needle bar position.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Knitting Machines (AREA)

Abstract

L'invention concerne une aiguille servant à la formation de mailles sur un métier à tricoter ou un métier à mailles jetées, laquelle aiguille comporte un corps de base, un crochet d'aiguille et un élément de transmission ou un élément languette, qui peut être déplacé par rapport au corps de base et au crochet d'aiguille dans le sens longitudinal du corps de base et est mis au point pour fermer et ouvrir le crochet d'aiguille par ledit déplacement relatif par rapport au corps de base. En outre, au moins le corps de base comporte deux parois latérales se faisant face, lesquelles sont tenues à distance l'une de l'autre par une fente et forment ainsi une entaille pour aiguille, dans laquelle l'élément de transmission est logé au moins en partie pour guider le déplacement relatif de l'élément de transmission par rapport au corps de base. Le corps de base comporte au moins une section de guidage prévue dans l'une des parois latérales, laquelle est mise au point pour établir un contact avec l'élément de transmission au moins le long d'une partie de la longueur de l'élément de transmission afin de bloquer l'élément de transmission dans un sens de la profondeur de l'entaille pour aiguille, lequel s'étend de manière perpendiculaire par rapport au sens longitudinal du corps de base. L'invention concerne de surcroît un métier à tricoter ou un métier à mailles jetées comprenant plusieurs aiguilles de ce type, et un procédé permettant de fabriquer une telle aiguille.
PCT/EP2019/086614 2018-12-21 2019-12-20 Aiguille servant à la formation de mailles sur un métier à tricoter ou un métier à mailles jetées, et métier à tricoter ou métier à mailles jetées comprenant plusieurs aiguilles de ce type WO2020127930A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP18215401.3A EP3670725A1 (fr) 2018-12-21 2018-12-21 Aiguille de formation de mailles sur un métier à tricoter ou un métier à mailles jetées et métier à tricoter ou métier à mailles jetées doté d'une pluralité de telles aiguilles
EP18215401.3 2018-12-21

Publications (1)

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WO2020127930A1 true WO2020127930A1 (fr) 2020-06-25

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EP (1) EP3670725A1 (fr)
WO (1) WO2020127930A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325767C1 (de) * 1983-07-16 1984-11-08 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Schiebernadel fuer maschenbildende Textilmaschinen
DE19913822A1 (de) * 1999-03-26 2000-09-28 Groz Beckert Kg Schiebernadel mit geteiltem Schieber
EP2003233A1 (fr) * 2007-06-16 2008-12-17 Groz-Beckert KG Aiguille à coulisse dotée d'une voie sur curseur sertie
EP2551393A1 (fr) * 2010-03-26 2013-01-30 Shima Seiki Mfg., Ltd Aiguille complexe, métier à mailles cueillies
EP3290551A1 (fr) 2016-08-29 2018-03-07 Maschinenfabrik Rieter AG Rail de roulement pour un dispositif de maintenance permettant la maintenance des postes de travail d'une machine de filature ainsi que machine de filature
EP3290555A1 (fr) 2016-09-02 2018-03-07 Ulrich Hofmann Aiguille pour machine à tricoter ou machine à tricoter à chaîne, machine à tricoter ou machine à tricoter à chaîne comprenant plusieures desdites aiguilles, et procédé de production desdites aiguilles

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3325767C1 (de) * 1983-07-16 1984-11-08 Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt Schiebernadel fuer maschenbildende Textilmaschinen
DE19913822A1 (de) * 1999-03-26 2000-09-28 Groz Beckert Kg Schiebernadel mit geteiltem Schieber
EP2003233A1 (fr) * 2007-06-16 2008-12-17 Groz-Beckert KG Aiguille à coulisse dotée d'une voie sur curseur sertie
EP2551393A1 (fr) * 2010-03-26 2013-01-30 Shima Seiki Mfg., Ltd Aiguille complexe, métier à mailles cueillies
EP3290551A1 (fr) 2016-08-29 2018-03-07 Maschinenfabrik Rieter AG Rail de roulement pour un dispositif de maintenance permettant la maintenance des postes de travail d'une machine de filature ainsi que machine de filature
EP3290555A1 (fr) 2016-09-02 2018-03-07 Ulrich Hofmann Aiguille pour machine à tricoter ou machine à tricoter à chaîne, machine à tricoter ou machine à tricoter à chaîne comprenant plusieures desdites aiguilles, et procédé de production desdites aiguilles

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