CA1231845A - Knitting machine element - Google Patents
Knitting machine elementInfo
- Publication number
- CA1231845A CA1231845A CA000463837A CA463837A CA1231845A CA 1231845 A CA1231845 A CA 1231845A CA 000463837 A CA000463837 A CA 000463837A CA 463837 A CA463837 A CA 463837A CA 1231845 A CA1231845 A CA 1231845A
- Authority
- CA
- Canada
- Prior art keywords
- shank
- recess
- needle
- depression
- element according
- 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.)
- Expired
Links
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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Knitting Machines (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
ABSTRACT
A knitting machine element has an elongated shank arranged for longitudinally displaceable support in a corresponding slot of a needle bed or the like. The shank is defined laterally by smooth flanks and is laterally bent or bendable at at least one predetermined location, the bend being at the bottom of a recess or depression extending transversely to the longitudinal axis of the shank in the associated flank or side wall of the shank. To ensure that the needle shank will rest in a biassed manner with a soft spring characteristic and with uniform frictional force on the side walls of the associated needle slot, and to avoid shank breakage or excessive soiling or wear of the needle slot, the arrangement is such that the recess or depression is filled with a vibration damping material, e.g. a plastic, which is bonded to the shank.
A knitting machine element has an elongated shank arranged for longitudinally displaceable support in a corresponding slot of a needle bed or the like. The shank is defined laterally by smooth flanks and is laterally bent or bendable at at least one predetermined location, the bend being at the bottom of a recess or depression extending transversely to the longitudinal axis of the shank in the associated flank or side wall of the shank. To ensure that the needle shank will rest in a biassed manner with a soft spring characteristic and with uniform frictional force on the side walls of the associated needle slot, and to avoid shank breakage or excessive soiling or wear of the needle slot, the arrangement is such that the recess or depression is filled with a vibration damping material, e.g. a plastic, which is bonded to the shank.
Description
~Z31~
The present invention relates to a punched knitting machine element, such as a knitting machine needle, a jack, sinker, or the like, and more particularly to a knitting machine element which is longitudinally slidable in a slot of a needle bed or the like, for example the dial or cylinder of a circular knitting machine, or the needle bed of a flat-bed knitting machine, and which is slightly bowed or bent about its major longitudinal extent to provide for chatter-free slidable movement in the slot.
The knitting element referred to herein may be a latch needle, a bearded needle, a compound needle, a raising needle, a transfer needle or transfer element, a jack, a sinker, as well as latchless needles, such as plush hooks, and sinkers, to make plush goods or the like; in general, it relates to any type of knitting element which is guided for longitudinal movement in a slot of a needle bed or the like.
In flat-bed and circular knitting machines with open cam races, for instance, so-called braked, or retarded needles are frequently used; that is, needles which on the side of their straight shank bear a braking spring cooperating with the confronting side wall of the corresponding needle slot, ox needles the shank of which is bent slightly to the side, so that it is resiliently fastened between the two opposing side faces of the needle slots.
In this manner slither, skid, shake or chatter of the needle in the needle slot can be yrevented, and the needle can be accurately held temporarily in specific operating, e.g., knitting positions.
In this connection, it is known Japanese Utility Model Sho 54-69945) to provide, on one or both sides of the needle shank, a recess extending transversely to the longitudinal axis of the shank in the corresponding shank side wall. In the vicinity of this recess, which may optionally be disposed i "I 23~8~S
in the trailing guide portion of the needle shank as well, the thickness of the needle shank is reduced; hence by controlling the length and depth of the recess (which has the effect of a milling cut causing springiness or resiliency) it is possible to adjust the elastic flexibility, and thus the spring, or flexing characteristic, of the shank, which is slightly bent to the side at a flexing point, line or zone located on the bottom of the recess, in accordance with the need at a given time for the braking effect to be attained in the needle slot. At two sharp, opposed edges, the recess meets the associated side wall or flank of the needle shank, resulting in an additional strain on and wearing away of the associated side wall of the needle slot and of the needle shank itself in this region. Also, the edge can become caught in the needle slot, and both of these effects can cause a lessening in resiliency and hence of the frictional force attainable, or may even cause the shank to break. Furthermore, dirt accumulates in the open recess over the course of time, with the result that the needle shank moves stiffly, or even seizes, in the needle slot. Finally, the spring zone formed by the bottom of the recess is undamped, which means that considerable fluctuations in frictional force must be taken into account.
In order that the needle shank will rest on the needle slot walls
The present invention relates to a punched knitting machine element, such as a knitting machine needle, a jack, sinker, or the like, and more particularly to a knitting machine element which is longitudinally slidable in a slot of a needle bed or the like, for example the dial or cylinder of a circular knitting machine, or the needle bed of a flat-bed knitting machine, and which is slightly bowed or bent about its major longitudinal extent to provide for chatter-free slidable movement in the slot.
The knitting element referred to herein may be a latch needle, a bearded needle, a compound needle, a raising needle, a transfer needle or transfer element, a jack, a sinker, as well as latchless needles, such as plush hooks, and sinkers, to make plush goods or the like; in general, it relates to any type of knitting element which is guided for longitudinal movement in a slot of a needle bed or the like.
In flat-bed and circular knitting machines with open cam races, for instance, so-called braked, or retarded needles are frequently used; that is, needles which on the side of their straight shank bear a braking spring cooperating with the confronting side wall of the corresponding needle slot, ox needles the shank of which is bent slightly to the side, so that it is resiliently fastened between the two opposing side faces of the needle slots.
In this manner slither, skid, shake or chatter of the needle in the needle slot can be yrevented, and the needle can be accurately held temporarily in specific operating, e.g., knitting positions.
In this connection, it is known Japanese Utility Model Sho 54-69945) to provide, on one or both sides of the needle shank, a recess extending transversely to the longitudinal axis of the shank in the corresponding shank side wall. In the vicinity of this recess, which may optionally be disposed i "I 23~8~S
in the trailing guide portion of the needle shank as well, the thickness of the needle shank is reduced; hence by controlling the length and depth of the recess (which has the effect of a milling cut causing springiness or resiliency) it is possible to adjust the elastic flexibility, and thus the spring, or flexing characteristic, of the shank, which is slightly bent to the side at a flexing point, line or zone located on the bottom of the recess, in accordance with the need at a given time for the braking effect to be attained in the needle slot. At two sharp, opposed edges, the recess meets the associated side wall or flank of the needle shank, resulting in an additional strain on and wearing away of the associated side wall of the needle slot and of the needle shank itself in this region. Also, the edge can become caught in the needle slot, and both of these effects can cause a lessening in resiliency and hence of the frictional force attainable, or may even cause the shank to break. Furthermore, dirt accumulates in the open recess over the course of time, with the result that the needle shank moves stiffly, or even seizes, in the needle slot. Finally, the spring zone formed by the bottom of the recess is undamped, which means that considerable fluctuations in frictional force must be taken into account.
In order that the needle shank will rest on the needle slot walls
2~ with a bias which is always as constant as possible, it is also known (German Examined Patent Application DE-AS 22 25 834) to embody the needle shank such that it is twisted about its longitudinal axis, or to embody it such that only one portion of the needle shank has this twist, this portion being provided in a region of the needle shank which during needle movement remains in the needle slot. A needle shank twisted in this manner is not very elastic however, so that during manufacture it is impossible to determine ahead of ~231~
time, or it can be determined only very approximately, how great the twisting has to be so that the needle clearance, or play, in the slots of the needle bed will be compensated such that on the one hand the needle will not shake or chatter but on the other hand the needle will not be braked excessively or even become jammed.
Finally, it is known (Japanese lltility Model Sho 57-9433) to provide latch needles with oblong holes passing entirely through the needle shank, or with apertures open at the edges and opening toward the shank underside, again passing entirely through the needle shank, these holes or apertures being filled by a vibration damping material, in particular plastic, that is firmly joined to the needle shank; the material is either flush with the side flanks of the needle shank or protrudes slightly from them laterally. However, the task of the plastic filling these through openings or holes is to damp the flexing vibrations transmitted to the needle shank via the butt, which are caused by the repeated shocks to the needle butt resulting from the raising and lowering of the cam races. These needles are embodied with a precisely straight needle shank.
The Invention It is an object to devise a punched knitting machine element the needle shank of which is biassed with a soft spring characteristic, and which rests with a uniform frictional force on the side walls of the associated needle slot, so that uniformly perfect goods can be produced at a high operating speed, while at the same time shank breakage or excessive soiling or wear of the needle slot is avoided.
Briefly, the invention provides knitting element for use in a knitting machine, comprising:
a shank adapted to slide longitudinally in a slot of a component ~Z3~34~i of the knitting machine, such slot defining two facing slot walls, said shank having smooth side walls, said shank having smooth side walls or flanks;
said shank at a predetermined flexing position along the length thereof being formed with a slight bend about an axis essentially transverse to the longitudinal extent of the shank to deflect a portion of the shank at one side of the flexing position with respect to another portion of the shank at the other side of the flexing position;
wherein a recess or depression is formed in the side wall or flank of the shank in the region of the bend or flexing position;
and an oscillation or vibration damping material is provided, bonded to the shank and filling said recess or depression.
The damping material is preferably a plastic and affects the spring characteristic of the spring strip formed by the bottom of the recess, imparting additional damping to the spring system formed by the relieved bent shaft or shank. A soft spring characteristic and a substantially constant frictional force between the shaft flanks and the side walls of the needle slot can thereby be attained. At the same time, an accumulation of dirt or the like in the recesses is precluded. Overall, a considerable increase in the operating speed as compared with known knitting elements is thereby attainable.
The novel concept is also applicable to knitting elements such as jacks raising and transfer elements and the like, the essentially straight shank of which, because of operating characteristics, must be slightly laterally deflectable, and which therefore have a corresponding lateral recess in the form of a milling cut causing springiness or resiliency. In ~3~
these knitting elements also, a favourable effect on the spring characteristic for flexing purposes is attained. Furthermore, the mechanical strength of the shank in the region of the weakening of the shank essentially effected by the recess is increased, and this applies equally to the above described braked or retarded needles.
The vibration damping material in the recess is advantageously substantially flush with the associated shaft flank; however, the arrangement may also be such that it protrudes beyond the shaft flank to a predetermined extent. Thu.s with an appropriate embodiment of the bend of the shank it can be attained that the laterally resiliently biassed shank is supported on the associated side wall of the needle slot via the plastic material disposed in the recess, which results in particularly favourable frictional conditions, yet with little wear.
The recess may have wall areas adjoining its ends which extend substantially at right angles to the shaft flank, which facilitates manufacture.
To attain a particularly effective anchoring of the vibration damping material, the recess may, however, instead have undercut wall areas adjoining the ends.
With a view to the spring characteristic to be attained at the flexing zone, it can also be advantageous if the recess has, at least in the region of its bottom, a substantially arch-shaped curved cross-sectional shape.
If the recess is disposed on the convex size of the bend, then the vibration damping material located in it will cooperate in the manner described with the associated side wall of the needle slot. However, the recess may in principle be provided on the concave side of the bend instead.
In a knitting element in the form of a latch needle embodied with at least one butt, it is suitable for the recesses to be disposed in the region ~L23~84~
between the needle butt and the needle hook, at a location that is always inside the needle slot when the needle is inserted into the needle slot.
If the latch needle has a trailing guide portion of the shank adjoining the needle butt, the recess can be provided in this trailing guide portion.
Exemplary embodimentsof the subject of the invention are shown in the accompanying drawings, wherein:-Figure 1 shows a latch needle according to the invention, in sideview;
Figure 2 shows the latch needle of Figure 1 with a detail of the needle slot associated with it, in plan view;
Figure 3 shows the latch needle of Figure 1 in detail, showing the recess filled with a vibration damping material, in a fragmentary plan view to a larger scale;
Figure 3a is a fragmentary view of another embodiment of the vibration damping insert;
Figure 4 is a fragmentary view of the latch needle of Figure 3, showing the flexing zone, in a plan view and to a still larger scale;
Figure 5 shows another embodiment of latch needle according to the invention, in side view;
Figure 6 shows the latch needle of Figure 5, with a detail of the associated needle slot, in plan view;
Figure 7 shows a detail at VII of the latch needle of Figure 6, in side view, to a larger scale;
Figure 8 shows a further embodiment of a latch needle according to the invention, in side view; and Figure 9 shows a transfer needle according to the invention, in side view.
lZ31~4S
The latch needle shown in Figures 1 - 4 has a needle shank or shaft 1, which has a butt 2 and is connected to a needle hook 3, with which a needle latch 5 pivotably supported at 4 is associated, the latch 5 being movable in a longitudinal slot 6. Adjoining the butt 2, a trailing guide portion 7 is provided on the shank 1.
The latch needle is intended to be guided in a longitudinally displaceable manner with its elongated shank 1 in a needle slot 8 of a needle bed 9, as shown schematically and in detail in Figure 2.
In the region be*ween the butt 2 and the needle hook 3, a recess 10 is provided in the needle shank on one side, extending transversely to the longitudinal axis of the shank and taking the form of a milling cut causing springiness or resiliency, the bottom 11 of which recess has a substantially arch-shaped curved cross-sectional shape.
As seen particularly in Figures 3, 4, the needle shank 1 is slightly bent laterally at a flexing zone 12 located on the bottom 11 of the recess 10; the angle of the bend which amounts to several arc minutes or a few arc degrees, is shown at 13.
By means of this bend, as shown in Figure 2, the needle shank 1 is resiliently biassed with its two side walls or flanks lOa against the adjacent side walls 14, 15 of the needle slot 8, so that when the shank 1 is moved longitudinally, a predetermined braking action is exerted upon it.
The recess 10 is filled with a vibration damping material 16, preferably a plastic, which is bonded to the needle shank 1 and is flush with the adjoining side wall or flank of the shank.
The vibration damping material 16 effects a damping of the spring strip region, formed in the vicinity of the recess, of the shank 1. At the 123~34~
same time this material 16 completely fills the recess 10, so that no dirt and the like can accumulate therein. Furthermore, filling the recess 10 with the vibration damping material 16 increases the mechanical stability of the needle shank, so that a latch needle is attained which has virtually the same strength as a needle having an unrelieved shank, yet which has the properties of a needle made resilient via a milling cut.
The recess 10 may also, as shown in Figure 3a, have wall areas 18, extending substantially at right angles to the shank axis, adjoining the opening rim at 17. The bottom 11 of the recess 10 extends substantially parallel to the shaft flanks lOa, which are slightly bent to the side at the flexing zone 12.
I~hile in the embodiment of Figures 1-4 the recess 10 filled with the vibration damping material 16 is disposed in the concave region of the bend, the arrangement in the embodiment of Figures 5-7 is such that the recess 10 is provided in the convex region of the bend. As shown particularly in the enlarged detail in Figure 7, the wall portions 18a of the recess 10 adjoining the opening rim 17 are undercu*, in order to assure a particularly firm anchoring of the vibration damping material 16. The vibration damping material 16 protrudes somewhat beyond the associated shaft flank lOa, so that the needle shank 1 is supported via this material against the adjacent side wall of the needle slot 8.
Naturally the bends shown at 12 in Figures 1- 4 may instead be embodied in a laterally reversed manner with respect to the longitudinal central plane of the needle shank 1.
In the embodiment according to Figure 8, the recess 10 containing 3L2~
the vibration damping material is disposed, not between the needle hutt 2 and the needle hook 3, as in the above-described embodiments, but rather on the trailing guide portion 7.
Finally, a transfer needle is shown in Figure 9, in which the lateral recess 10 of the needle shank 1 containing the vibration damping material 16 is disposed in the region which, in operation, emerges from the lateral needle slot with its portion bearing the needle head.
A recess 10 could also be provided in the region between the loop or stitch support portion disposed at 21 and the needle hook 3.
As a rule, the recess or depression 10 having the vibration damping material 16 disposed in it will extend over the entire height of the shank;
in principle, however, it is also conceivable for it to occupy only a portion of the shank height. Its longitudinal extent in the direction of the longitudinal axis of the shank is determined from the spring characteristic that is to be attained in the vicinity of the bend 12.
A suitable plastic material 16 to fill the depression or recess 10 is: polyamide with a suitable adhesive promotor or a polyurethane-acrylic plastics.
time, or it can be determined only very approximately, how great the twisting has to be so that the needle clearance, or play, in the slots of the needle bed will be compensated such that on the one hand the needle will not shake or chatter but on the other hand the needle will not be braked excessively or even become jammed.
Finally, it is known (Japanese lltility Model Sho 57-9433) to provide latch needles with oblong holes passing entirely through the needle shank, or with apertures open at the edges and opening toward the shank underside, again passing entirely through the needle shank, these holes or apertures being filled by a vibration damping material, in particular plastic, that is firmly joined to the needle shank; the material is either flush with the side flanks of the needle shank or protrudes slightly from them laterally. However, the task of the plastic filling these through openings or holes is to damp the flexing vibrations transmitted to the needle shank via the butt, which are caused by the repeated shocks to the needle butt resulting from the raising and lowering of the cam races. These needles are embodied with a precisely straight needle shank.
The Invention It is an object to devise a punched knitting machine element the needle shank of which is biassed with a soft spring characteristic, and which rests with a uniform frictional force on the side walls of the associated needle slot, so that uniformly perfect goods can be produced at a high operating speed, while at the same time shank breakage or excessive soiling or wear of the needle slot is avoided.
Briefly, the invention provides knitting element for use in a knitting machine, comprising:
a shank adapted to slide longitudinally in a slot of a component ~Z3~34~i of the knitting machine, such slot defining two facing slot walls, said shank having smooth side walls, said shank having smooth side walls or flanks;
said shank at a predetermined flexing position along the length thereof being formed with a slight bend about an axis essentially transverse to the longitudinal extent of the shank to deflect a portion of the shank at one side of the flexing position with respect to another portion of the shank at the other side of the flexing position;
wherein a recess or depression is formed in the side wall or flank of the shank in the region of the bend or flexing position;
and an oscillation or vibration damping material is provided, bonded to the shank and filling said recess or depression.
The damping material is preferably a plastic and affects the spring characteristic of the spring strip formed by the bottom of the recess, imparting additional damping to the spring system formed by the relieved bent shaft or shank. A soft spring characteristic and a substantially constant frictional force between the shaft flanks and the side walls of the needle slot can thereby be attained. At the same time, an accumulation of dirt or the like in the recesses is precluded. Overall, a considerable increase in the operating speed as compared with known knitting elements is thereby attainable.
The novel concept is also applicable to knitting elements such as jacks raising and transfer elements and the like, the essentially straight shank of which, because of operating characteristics, must be slightly laterally deflectable, and which therefore have a corresponding lateral recess in the form of a milling cut causing springiness or resiliency. In ~3~
these knitting elements also, a favourable effect on the spring characteristic for flexing purposes is attained. Furthermore, the mechanical strength of the shank in the region of the weakening of the shank essentially effected by the recess is increased, and this applies equally to the above described braked or retarded needles.
The vibration damping material in the recess is advantageously substantially flush with the associated shaft flank; however, the arrangement may also be such that it protrudes beyond the shaft flank to a predetermined extent. Thu.s with an appropriate embodiment of the bend of the shank it can be attained that the laterally resiliently biassed shank is supported on the associated side wall of the needle slot via the plastic material disposed in the recess, which results in particularly favourable frictional conditions, yet with little wear.
The recess may have wall areas adjoining its ends which extend substantially at right angles to the shaft flank, which facilitates manufacture.
To attain a particularly effective anchoring of the vibration damping material, the recess may, however, instead have undercut wall areas adjoining the ends.
With a view to the spring characteristic to be attained at the flexing zone, it can also be advantageous if the recess has, at least in the region of its bottom, a substantially arch-shaped curved cross-sectional shape.
If the recess is disposed on the convex size of the bend, then the vibration damping material located in it will cooperate in the manner described with the associated side wall of the needle slot. However, the recess may in principle be provided on the concave side of the bend instead.
In a knitting element in the form of a latch needle embodied with at least one butt, it is suitable for the recesses to be disposed in the region ~L23~84~
between the needle butt and the needle hook, at a location that is always inside the needle slot when the needle is inserted into the needle slot.
If the latch needle has a trailing guide portion of the shank adjoining the needle butt, the recess can be provided in this trailing guide portion.
Exemplary embodimentsof the subject of the invention are shown in the accompanying drawings, wherein:-Figure 1 shows a latch needle according to the invention, in sideview;
Figure 2 shows the latch needle of Figure 1 with a detail of the needle slot associated with it, in plan view;
Figure 3 shows the latch needle of Figure 1 in detail, showing the recess filled with a vibration damping material, in a fragmentary plan view to a larger scale;
Figure 3a is a fragmentary view of another embodiment of the vibration damping insert;
Figure 4 is a fragmentary view of the latch needle of Figure 3, showing the flexing zone, in a plan view and to a still larger scale;
Figure 5 shows another embodiment of latch needle according to the invention, in side view;
Figure 6 shows the latch needle of Figure 5, with a detail of the associated needle slot, in plan view;
Figure 7 shows a detail at VII of the latch needle of Figure 6, in side view, to a larger scale;
Figure 8 shows a further embodiment of a latch needle according to the invention, in side view; and Figure 9 shows a transfer needle according to the invention, in side view.
lZ31~4S
The latch needle shown in Figures 1 - 4 has a needle shank or shaft 1, which has a butt 2 and is connected to a needle hook 3, with which a needle latch 5 pivotably supported at 4 is associated, the latch 5 being movable in a longitudinal slot 6. Adjoining the butt 2, a trailing guide portion 7 is provided on the shank 1.
The latch needle is intended to be guided in a longitudinally displaceable manner with its elongated shank 1 in a needle slot 8 of a needle bed 9, as shown schematically and in detail in Figure 2.
In the region be*ween the butt 2 and the needle hook 3, a recess 10 is provided in the needle shank on one side, extending transversely to the longitudinal axis of the shank and taking the form of a milling cut causing springiness or resiliency, the bottom 11 of which recess has a substantially arch-shaped curved cross-sectional shape.
As seen particularly in Figures 3, 4, the needle shank 1 is slightly bent laterally at a flexing zone 12 located on the bottom 11 of the recess 10; the angle of the bend which amounts to several arc minutes or a few arc degrees, is shown at 13.
By means of this bend, as shown in Figure 2, the needle shank 1 is resiliently biassed with its two side walls or flanks lOa against the adjacent side walls 14, 15 of the needle slot 8, so that when the shank 1 is moved longitudinally, a predetermined braking action is exerted upon it.
The recess 10 is filled with a vibration damping material 16, preferably a plastic, which is bonded to the needle shank 1 and is flush with the adjoining side wall or flank of the shank.
The vibration damping material 16 effects a damping of the spring strip region, formed in the vicinity of the recess, of the shank 1. At the 123~34~
same time this material 16 completely fills the recess 10, so that no dirt and the like can accumulate therein. Furthermore, filling the recess 10 with the vibration damping material 16 increases the mechanical stability of the needle shank, so that a latch needle is attained which has virtually the same strength as a needle having an unrelieved shank, yet which has the properties of a needle made resilient via a milling cut.
The recess 10 may also, as shown in Figure 3a, have wall areas 18, extending substantially at right angles to the shank axis, adjoining the opening rim at 17. The bottom 11 of the recess 10 extends substantially parallel to the shaft flanks lOa, which are slightly bent to the side at the flexing zone 12.
I~hile in the embodiment of Figures 1-4 the recess 10 filled with the vibration damping material 16 is disposed in the concave region of the bend, the arrangement in the embodiment of Figures 5-7 is such that the recess 10 is provided in the convex region of the bend. As shown particularly in the enlarged detail in Figure 7, the wall portions 18a of the recess 10 adjoining the opening rim 17 are undercu*, in order to assure a particularly firm anchoring of the vibration damping material 16. The vibration damping material 16 protrudes somewhat beyond the associated shaft flank lOa, so that the needle shank 1 is supported via this material against the adjacent side wall of the needle slot 8.
Naturally the bends shown at 12 in Figures 1- 4 may instead be embodied in a laterally reversed manner with respect to the longitudinal central plane of the needle shank 1.
In the embodiment according to Figure 8, the recess 10 containing 3L2~
the vibration damping material is disposed, not between the needle hutt 2 and the needle hook 3, as in the above-described embodiments, but rather on the trailing guide portion 7.
Finally, a transfer needle is shown in Figure 9, in which the lateral recess 10 of the needle shank 1 containing the vibration damping material 16 is disposed in the region which, in operation, emerges from the lateral needle slot with its portion bearing the needle head.
A recess 10 could also be provided in the region between the loop or stitch support portion disposed at 21 and the needle hook 3.
As a rule, the recess or depression 10 having the vibration damping material 16 disposed in it will extend over the entire height of the shank;
in principle, however, it is also conceivable for it to occupy only a portion of the shank height. Its longitudinal extent in the direction of the longitudinal axis of the shank is determined from the spring characteristic that is to be attained in the vicinity of the bend 12.
A suitable plastic material 16 to fill the depression or recess 10 is: polyamide with a suitable adhesive promotor or a polyurethane-acrylic plastics.
Claims (12)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. Knitting element for use in a knitting machine comprising:
a shank adapted to slide longitudinally in a slot of a component of the knitting machine, such slot defining two facing slot walls, said shank having smooth side walls or flanks;
said shank at a predetermined flexing position along the length thereof being formed with a slight bend about an axis essentially transverse to the longitudinal extent of the shank to deflect a portion of the shank at one side of the flexing position with respect to another portion of the shank at the other side of the flexing position;
wherein a recess or depression is formed in the side wall or flank of the shank in the region of the bend or flexing position;
and an oscillation or vibration damping material is provided, bonded to the shank and filling said recess or depression.
a shank adapted to slide longitudinally in a slot of a component of the knitting machine, such slot defining two facing slot walls, said shank having smooth side walls or flanks;
said shank at a predetermined flexing position along the length thereof being formed with a slight bend about an axis essentially transverse to the longitudinal extent of the shank to deflect a portion of the shank at one side of the flexing position with respect to another portion of the shank at the other side of the flexing position;
wherein a recess or depression is formed in the side wall or flank of the shank in the region of the bend or flexing position;
and an oscillation or vibration damping material is provided, bonded to the shank and filling said recess or depression.
2. Element according to claim 1, wherein the oscillation or vibration damping material comprises a plastic.
3. Element according to claim 1, wherein the oscillation or vibration damping material in the recess or depression is substantially flush with the flank of the shank.
4. Element according to claim 1, wherein the oscillation or vibration damping material in the recess or depression protrudes beyond the flank of the shank by a predetermined extent.
5. Element according to claim 1, wherein the recess or depression has adjacent its edges wall areas extending substantially at right angles to the shaft flank.
6. Element according to claim 1, wherein the recess or depression has undercut wall areas adjacent its ends.
7. Element according to claim 1, wherein the recess or depression has a substantially arch-shaped curved cross-sectional shape, at least in the vicinity of its bottom.
8. Element according to claim 1, wherein the recess or depression is disposed on the convex side of the bend.
9. Element according to claim l, wherein the recess or depression is disposed on the concave side of the bend.
10. Element according to claim 3,4 or 5, wherein the oscillation or vibration damping material comprises a plastic.
11. Element according to claim 6, 7 or 8, wherein the oscillation or vibration damping material comprises a plastic.
12. Element according to claim 9, wherein the oscillation or vibration damping material comprises a plastic.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3336212A DE3336212C1 (en) | 1983-10-05 | 1983-10-05 | Punched knitting tool for stitch-forming textile machines |
| DEP3336212.2 | 1983-10-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1231845A true CA1231845A (en) | 1988-01-26 |
Family
ID=6211062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000463837A Expired CA1231845A (en) | 1983-10-05 | 1984-09-24 | Knitting machine element |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0143890B1 (en) |
| JP (1) | JPS6094658A (en) |
| KR (1) | KR860001067B1 (en) |
| CA (1) | CA1231845A (en) |
| DE (2) | DE3336212C1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3706856C1 (en) * | 1987-03-04 | 1988-03-03 | Groz & Soehne Theodor | Punched knitting tool for textile machines, in particular knitting and knitting machines |
| DE3921506C1 (en) * | 1989-06-30 | 1990-08-09 | Theodor Groz & Soehne & Ernst Beckert Nadelfabrik Kg, 7470 Albstadt, De | |
| DE8913293U1 (en) * | 1989-11-10 | 1989-12-28 | Theodor Groz & Söhne & Ernst Beckert Nadelfabrik KG, 7470 Albstadt | Punched knitting tool for textile machines |
| DE4100931A1 (en) * | 1991-01-15 | 1992-07-16 | Groz & Soehne Theodor | SLIDER NEEDLE, ESPECIALLY FOR KNITTING MACHINES |
| EP1589136B1 (en) * | 2004-04-21 | 2007-05-16 | Groz-Beckert KG | System member having a braking spring |
| EP2045384B1 (en) * | 2007-10-02 | 2012-08-22 | Groz-Beckert KG | Warp-knitting needle |
| KR200445490Y1 (en) * | 2007-11-12 | 2009-08-04 | 강문환 | Tension reinforcement sinker of feather use pile fabric socks knitting machine |
| CN104532467A (en) * | 2015-01-23 | 2015-04-22 | 张家港润山针织机械有限公司 | Multifunctional knocking-over needle |
| EP4187006B1 (en) | 2021-11-25 | 2024-11-06 | Groz-Beckert KG | Knitting tool and method for producing a knitting tool |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2240761A (en) * | 1938-10-13 | 1941-05-06 | Hemphill Co | Needle and method of frictioning |
| US3977217A (en) * | 1971-06-01 | 1976-08-31 | The Torrington Company | Friction twist knitting element |
| CH578637A5 (en) * | 1974-12-03 | 1976-08-13 | Dubied & Cie Sa E | |
| DE2610078C3 (en) * | 1976-03-11 | 1981-02-12 | Mayer & Cie Gmbh & Co, 7470 Albstadt | Latch needle for knitting machines |
| JPS5469945A (en) * | 1977-11-16 | 1979-06-05 | Hitachi Ltd | Oscillator circuit |
| JPS579433A (en) * | 1980-06-17 | 1982-01-18 | Pola Kasei Kogyo Kk | Apparatus for measuring light passing degree of skin |
-
1983
- 1983-10-05 DE DE3336212A patent/DE3336212C1/en not_active Expired
-
1984
- 1984-08-04 EP EP84109273A patent/EP0143890B1/en not_active Expired
- 1984-08-04 DE DE8484109273T patent/DE3461311D1/en not_active Expired
- 1984-09-24 CA CA000463837A patent/CA1231845A/en not_active Expired
- 1984-10-02 JP JP59205700A patent/JPS6094658A/en active Pending
- 1984-10-05 KR KR1019840006161A patent/KR860001067B1/en active
Also Published As
| Publication number | Publication date |
|---|---|
| KR850003442A (en) | 1985-06-17 |
| EP0143890A1 (en) | 1985-06-12 |
| KR860001067B1 (en) | 1986-08-04 |
| DE3336212C1 (en) | 1985-01-03 |
| EP0143890B1 (en) | 1986-11-12 |
| JPS6094658A (en) | 1985-05-27 |
| DE3461311D1 (en) | 1987-01-02 |
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| Date | Code | Title | Description |
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| MKEX | Expiry |