DE2113513A1 - Circular knitting machine - Google Patents

Description

DR. ING. KARL BOEhMEkT. ÜIPl.-ING. ALBERT BOEHMERT

28 BREMEN FELDSTRASSE 24 TEL. (0421) 491760, 442551

File number: NeUSIUaeldUIlg Posfechedckontor Hamburg 126083

Bank account: Bremer Bank, Bremen, toilet. 1001449 Named Note: North American Rockwell ... My sign.- IT 655 28 Bremen, March 19th, 1971

NOR (EH AMERICAN ROCKWELL CORPORATION, Pittsburgh, State of Pennsylvania (7th St.A.)

Circular knitting machine

Circular knitting machines often have a rotatable needle and sinker cylinder as well as on the sinkers acting on the selector lever, whereby different groups of the selector lever by protruding on their circumference Approaches or Musterfufichen provided sample or control drums are controlled, the cooperate with corresponding feet provided on the boards to produce the boards different stitch patterns in machine-knitted stockings in the U.S. patent 3 203 683 to be selected. The control drums are turned by two ratchets during each revolution of the cylinder Individual tooth steps switched, with one of the switching steps controlling the selector lever which act on the pattern feet of the plates of one half of the cylinder, and the other switching

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step controls those selector levers which are on the Cough feet of the sinkers of the other half of the Act on the cylinder. The working and rest positions of the various selector lever groups are through controlled separate levers which are operated by the main cam barrel of the machine. Included this arrangement all selector levers of each group at the same time are operated, the board selection is limited to the group viewed.

So that all selector levers in the group as well as individually selected levers in the group are on the The sinker feet assigned to them can act in the formation of mesh patterns USA patent J 246 487 already proposed the working and rest position of the selector lever individually to control. The one described in U.S. Patent 5,246,48? The mechanism described has a main control drum which processes to control the Platinenwähl the selector lever is used when these are moved into their working position. Also is the main control drum an auxiliary control drum assigned which individually controls the movement of the selector lever between working and rest positions. The main tax - &? @ M @ el is in two individual tooth steps by means of a ratchet mechanism during each revolution of the cylinder switched by a cam disk with two elevations rotating synchronously with the cylinder is operated. The auxiliary control drum is set in single tooth steps by means of a gear lock switched by the main cam drum of the Machine is operated »

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Since most machine operations also, from the Main cam drum are controlled and the number of possible switching movements of the cam drum usually is limited to about 2Ψ - 27 movements, it is often undesirable to change the switching steps of the Control the auxiliary control drum by means of the cam drum in the required Veise timed, it was because that such movements of the auxiliary control drum during idle movements of the cam control drum can be caused in which the movement of the control drum does not interfere with other machine operations coincides in time

In order to avoid this difficulty, according to the invention in a circular knitting machine with a rotating the needle cylinder, which has grooves for the slidable mounting of a needle roller assembly and which can be actuated selectively Having cough sinkers for each needle; one coughing device acting on the feet of the sinkers via fleece lever with a first one Switching device switched main control drum for actuating the selector lever and one by a second switching device switched auxiliary control drum, which the selector lever between their working positions, in which they are controlled by the main control drum to be operated, and moving positions, proposed a common · actuating device provide which causes several switching steps of the switching devices, wherein they are the first switching device for switching the main control drum at each of these switching steps and the second Switching device for switching the auxiliary control drum only in one of these switching steps actuated

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The following is an embodiment of the invention described in detail using the drawing shows:

Fig. 1 is a plan view of part of a circular knitting machine with a sinker selection device of the type described in US Pat. No. 3,246,487 and having a gate direction according to the invention is provided;

2 shows a plan view of switching devices for the control drums of the board selection device, with parts broken away for clarity;

Fig. 3 is an elevation view, partly in section, of part of the actuator and Control devices for the switching device of the control drums; and

4 shows a view of a further part of the actuating device for the switching devices ·

In Figs. 1 and 2 there is a part of a Sund knitting machine shown with a needle cylinder 10, which is used in the usual Veise butes for threading (not shown) and cough sinkers 11 has · The sinkers are preferably tiltable and have arranged at several heights Sample feet or lugs · Furthermore, a coughing mechanism 12 is provided, by means of which the actuation the sinkers and the needles is selectively controlled in order to produce the goods, for example ladies' stockings, with the desired knitting pattern to knit · The coughing mechanism 12, which features the one described in the United States patent 3 246 487 has the lifting mechanism shown, has selector lever 15. of which each one a foot or foot level of the boards

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-assigned · The selector levers 15 are pivotable on one Shaft 16 supported by a support plate 17 · The plate 1? is for example attached by screws 20 to a cover plate 21, which forms a rope of the machine frame 22 (fig 2) Each selector lever has a protruding rabbit 25, which reads a grid at the corresponding level of the main control drum 26 · The main control drum 26 is mounted on a pin 27 which is attached to the mounting plate 17 · The main control drum 26 has a locking mechanism or a locking wheel 30 which interacts with a pawl 51 which is pivotable connected to an arm 38 of an angle lever 55 is. The angle lever 35 is pivotable on one Journal 36, which is fastened to the mounting plate 17 · The angle lever 35 is vibrated offset to move the pawl 31 so su that the ratchet 30 and the main control drum 26 in the following are switched in the manner described

Each Uihlhebel 15 has a white rabbit 37, which a sexton at a corresponding level reads a “wide or auxiliary control drum 40, which can be rotated open the journal 36 is mounted. The auxiliary control drum 40, which corresponds to the control drum 97 of US Pat. No. 3,246,487, has a locking gear bsw. a ratchet wheel 4-1 with which a limb 4-2 works The pawl 4-2 can be swiveled mounted on a pin 4-5, which is attached to a »wide arm 46 of the angle lever 35. The handle 4-2 switches the auxiliary control drum when it moves 40, with the movement: the pawl 42 through the Schwingbeweeung of the lever 35 is caused,

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as will generally be described in detail below · A between the free end of the pawl 31 and the support plate 1? arranged spring 47 keeps the pawl 31 old the ratchet wheel 30 in engagement. A similar one between the free end of the pawl 42 and the support plate 17 arranged spring 50 holds the pawl 42 with the ratchet wheel 41 in engagement

The auxiliary control drum 40 has cough-feet or sit on which the selector lever 15 individually between Buhestellungen in which their vases 25 with the kneader- » feet of the main control drum 26 are disengaged, and work se positions move in which the rabbits 25 read the! faster on the main control drum to access the Actuate selector lever in the manner described in U.S. Patent 3,246,487 · The auxiliary control drum 40 also has a cough-foot on the corresponding one Level on which acts on a rabbit 49 of a lever 51 · The lever 51 has a after downward rod-shaped extension 55 * which comes into engagement with the pawl 51 * The lever 51 is operated by the cough-feet of the auxiliary control drum 40 so that the pawl 31 between a rest position, in which the main control drum 26 is in the idle position when no boards are due to the selection levers to be selected, and a working position movable 1st, in which it switches the main control drum when Wihlhebel in the US patent 5 246 487 are to be selected

The pawl 42 is also designed so that it from their booing position, ia the see, dl auxiliary tax

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Drum 40 is in the idle position, in lore Working position. Can be moved to the auxiliary control drum to switch. To control this movement between boo and working position, the pawl points 4-2 has a protruding surface 52 which can come into engagement with a rabbit 55 which is located on the free End of an arm 56 of a lever 57 is located. The lever 57 is pivotably mounted on a pin 60, ' which sits on a bracket 61 which is attached to the upper ends of the shaft 16 and the pins 27 and 36 is (Fig. 1). The free end of a second arm 62 of the lever 57 is by means of a Bowden cable 63 or the like is connected to an arm 65 of a lever 66 which is pivotably mounted on a pin 67. The pin 67 is carried by a bracket 70 which is secured to the frame 22 (Fig. 3) by screws 71 is. The free end of a second arm 72 of the lever 66 has a rabbit 75, which with Cam 76 (only one crouch is shown) of a cam drum 77 of the machine comes into engagement Cam barrel 77 which forms part of the cough mechanism for controlling essentially all operations the machine is shifted in steps in the usual way. The levers 57 and 66 are switched normally held in their positions shown in FIGS. 1 and 3 by a stop screw 80. The stop screw 80 is adjustably attached to the free end of the arm 62 of the angle lever 57 A portion 81 of the holder 61 is used to hold the pawl 42 in the rest position when it is not Cam 76 is located below the nose 75 of the lever 66. On the other hand, if a cam 76 is at a movement of the cam drum under the nose 75

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moved, levers 66 and 57 are clockwise moved from their positions shown in Figs. 1 and 5 so that the spring 50, the pawl 42 in its the Auxiliary control drum 40 can bring switching working position · It should be noted that the movements the cam drum take place in their extent and in their lateral coordination so that first a cam is moved under the lever 66 so that the pawl 42 switches the auxiliary control drum 40, and that then the Cam is moved away from its position below the lever 66 to bring the pawl back into the rest position bring to·

The working and lifting positions of the pawl 42 are further influenced by a finger 82 which is attached to the arm 62 of the lever 57 and serves to read a sexton at one of the levels of the auxiliary control drum 40 when the lever 57 is being controlled by the crooks 76 the squat drum ψ? When the pawl 42 is activated to switch the drum 40, a little foot is left out in the pattern of the drum at the point of engagement of the finger 82 (FIG. 1) so that the switching movements initiated by the cam drum are not hindered If a foot falls under the finger 82 as a result of the switching movement initiated by the cam drum, the lever 57 maintains its position facing in the direction of the ear, whereby the pawl 42 is kept in the working position in which it switches the auxiliary control drum the finger is at a point on the armor where no pattern foot is provided 01 described above

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bene double control of working and booing positions the pawl 42 thus enables the switching movements the auxiliary tax troiamel at certain times from the drum cam and at other times after one caused by the drum cam Switching movement can be effected by the auxiliary control drum itself

As shown in Figures 2, 3 and 4, the free end is of the arm 32 of the lever 35t according to the invention represents part of a common actuating device for the switching movements of pawls 31 and # 2, pivotable with an arm 86 of a lever 87 by means of an adjustable link 85 tied together. The lever 87 is pivotably mounted on a pin 90 which is attached to a Beck plate 92 of the frame 22 attached bracket 91 is held. A second arm 95 of the lever 87 is means an adjustable link 96 pivotally connected to an arm 97 of a squat lever 100, which is rotatably mounted on a pin 101 attached to the frame 22 «A second arm 102 of the lever 100 carries a Kttnehmerrolle 105, which is in engagement with a cam disk 106 on the drive shaft 107 of the machine conventional drive device driven drive shaft is via a gear (not shown) with the Cylinder 10 connected so that the cylinder with each revolution of the drive shaft also one Rotation.

The cam plate 106 has a pair of elevations 110 of essentially the same height eöwi · between

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the elevations on opposite low portions 111 and 112. Like in Pig. 3 shown the section 111 is slightly lower than the section 112 · You issue surveys 110 over the Lever 100 and 87 the lever 35 oscillating movements through which the pawls 31 and 42 with the same amplitude twice per revolution of the drive shaft 10? can be moved counterclockwise or in the switching direction. The low sections 111 and 112 give the lever 35 oscillating movements through which the pawls turn clockwise for reasons to be described below. or reversing direction can be moved with different amplitudes

Like in Pig. 1 and 2, the control drums 26j 40 have the same diameter and are the same Number of cough spots. The ratchet wheel 30 assigned to the main control drum 26 and the the ratchet wheel 41 assigned to the auxiliary control drum have as many teeth as cough spots on the Cough drums are provided. The ratchet wheel 30 has such a diameter that the distance between adjacent Teeth is smaller than the movement of the teeth Pawl 31 in Erückstellrichtung, which by a of the low sections 111 or 112 of the camouflage plate 106 is caused so that the pawl 31 is actuated during each revolution of the cam disk is that the ratchet wheel and the control drum through one of the elevations 110 after each reset step be shifted by one tooth · On the other hand, the diameter of the ratchet 41 is larger than that of ratchet wheel 30 »so that the distance between neighboring teeth is slightly smaller than the

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caused by the first low portion 111 return movement of the pawl 42 and is slightly larger than the return movement of the pawl 42 caused by the second section 112. So if the pawls 31 and 42 operated in the manner described above the pawl 31 is pushed through the two low sections of the cam disk 106 caused return movements the ratchet 30 and the drum 26 advance by a single tooth, while the pawl 42 with a single Rotation of the cam disc is only actuated by one of the low sections so that it follows a return movement the ratchet 41 and the auxiliary 8 control drum 40 shifts by one tooth

The above statements show that according to the invention a single, common lifting mechanism to operate the switching devices for the main and Auxiliary control drums are provided, which control the selector lever of a circular knitting machine in switching steps in pairs steer. This common device is designed so that it is one of the control drums each of the two switching steps switches and the other control drum only for one of the two switching steps · The lifting mechanism therefore has a double control the switching devices for one of the control drums, whereby the switching devices for this control drum operated at certain times by a cough mechanism of the Has chine if individual switching steps of the control drum are required, and to others Points in time by the control drum itself, if after actuation of the switching devices by the coughing mechanism one or more successive

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the following switching steps are required.

Any combinations and modifications of the aforementioned are within the scope of the invention Features possible

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Claims (1)

Expectations 1 .J circular knitting machine with a rotating needle cylinder, which hats for sliding storage of a Hadelkranzes and selectively operable cough plates has for each needle; one on feet of the sinkers via selector lever acting coughing device with a main control drum switched by an erate switching device the selector lever and an auxiliary control drum switched by a second switching device, the the selector lever between their working positions, in which they are operated by the main control drum, and rest positions, characterized in that a common actuating device is provided which causes several switching steps of the switching devices, wherein it is the first switching device (30, 31) sum switching the main control drum (26) for each of these switching steps and the second switching device (4-1, 4-2) for switching the Auxiliary control drum (40) only for one of these Switching steps actuated " 2 · Machine according to claim 1, characterized in that that the first switching device is an at the Hauptetsteuroaeel (26) arranged first ratchet wheel (30) and a · first pawl · (31) for switching this 109843/1127 Having ratchet wheel; that the second switching device is a ratchet wheel arranged on the auxiliary control drum (40) (41) and a second pawl (42) sub switching this ratchet wheel; and that the common actuator a lever (35) ι on which both limbs (31 * 42) are attached, and one with the cylinder (10) has circumferential cam disk (106) for acting on the lever (35). 3 · Machine according to claim 2, characterized in that the cam disk (106) is a pair of mutually opposite Elevations (110) for moving the lever (35) in the switching direction, and between the elevations (110) lying low sections (111, 112) for moving the lever (35) in a restoring manner Having sighting, wherein the low sections (111, 112) reset the first pawl (31) in such a way that that this pawl (31) actuated by each of the elevations (110) for switching the main control drum (26) can be, and reset the second pawl (42) so that this pawl (42) for switching the auxiliary control drum (40) during its movement in the switching direction through only one of the elevations can be operated. 4 machine according to one of the preceding claims, characterized by a control device for controlling the movement of the first pawl (31) between a rest position and a working position in which they the ratchet wheel (30) of the main control drum (26) «held. 5 «Haechine according to claim 4, characterized in that 109843/1127 net that the control device for the first pawl (31) the auxiliary control tome (40) and one through the Auxiliary control $ romuel (40) actuated lever (57) includes. 6. Machine according to claim 1, characterized in that the svelte switching device on the auxiliary control torel arranged ratchet wheel (44) and one actuated by the common actuating device Has pawl (4-2); and that a control device for controlling the movement of this pawl (4-2) between a rest position and a working position is provided, in which it switches the ratchet wheel (4 * 1) of the auxiliary control drum (40) 7 · Machine according to claim 6 old a sample device sur control of machine operations, characterized in that the control device for the Pawl (42) of the auxiliary control drum a lever (57) » a first, driven by the pattern device (77), the lever to control the pawl movement between the boo and work position laterally actuating device (82), as well as one through the auxiliary control tome has actuated svelte device, which the lever sur control of the pawl movement see below moved at other times 8. Machine according to claim 1, characterized by a first gate direction which the first switching device in their idle position holding the main control tube (40) and in their that Switching this drum by the common actuating device enabling working position brings; and a svelte gate direction that the svelte 109843/1127 _eG Switching device in which the auxiliary control troamel (26) in the idle position holding rest position and in their working position enabling this Tromael to be switched brings. 9. Machine according to claim 8 with a rusting device for controlling machine operations, characterized in that the first switching device The first gate direction, which brings in the rest position and the working position, is activated by the auxiliary control roamel (40) has an actuated first member; and that the second switching device in working and in The second device bringing the rest position has a second link which is partially formed by the Pattern device (77) and partly operated by the auxiliary control drum (40) 109843/1127 Blank page