DD142900A1 - DEVICE FOR CUTTING THE EMPTY CHAIN, ESPECIALLY WHOLESALE GRAND TAILGATE MACHINES - Google Patents

Description

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Tite l the invention

Device for cutting through the empty chain, in particular on large cranes

Int.Cl.

D 05 B 7/00

Application of the invention

The invention relates to a device for cutting through the empty chain, in particular on large-scale circular linking machines, which are used for coupling fitted parts of a knitted or knitted fabric for top knitwear application.

Characteristics of the known n technical solu tions

The pieces to be warped, after having been pushed on one another in a mesh-like manner, reach the chipping point at an arbitrary distance from the preceding or subsequent pieces of stock. The leaflet forming between the respective pieces of goods was previously cut by the Kettlerin with the help of scissors. However, this results in very high, unproductive grip times.

On hosiery machines devices have already become known which automatically cut through the stockings interconnecting empty slips. These devices have a movable and a fixed knife. The Leerkettel is hochgshobQn from a Führungsρlatino About the Fonturennadel _s so that it comes to liogen between the knife blades. A pawl grasps the upper end of the moving knife, tightens it, and the knife cuts open the blank slip. In another device for cutting the blank slip, a brush wheel rotates over the fountain needles

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and push the blank slip to the center of the font, so that it comes to rest between the edges of a pair of scissors. A cam, which rotates together with the brush, presses the cutting together and the blank slip is cut through.

By DD-PS 10 802 auoh a device for cutting through the empty chain "has become known, which is mounted on the Aufstoßnadeln behind the Kettelstelle and consists of a" movable, lying close over the Fonturennadeln probe and a pair of scissors. "One of the button controlled electromagnet sets "at the beginning of the empty slip the cutter into operation.

In the device known by the DD-PS 44 for cutting the empty chain, for example on Großkranzkettelmaschinen, a reciprocating sliding probe is provided with a knife lying thereon. Through the obliquely rising knife, which moves forward with the button in the direction of the crane needles, the blank sheet is stretched and cut.

The known devices have the fundamental disadvantage that they are arranged either above or outside the needle crane level. They are therefore only suitable for cutting the empty chain of _f hanging down pieces of goods · For the coupling of top jerseys, where the pushed-pieces are both below and above the needle contour, these devices are not applicable. In addition, these space-consuming · devices are very hindering and partly due to the constant cutting motion wear and prone to failure.

Object of the invention

The object of the invention is to provide a device under optimally favorable working conditions whose sneezing mechanism is able to completely

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regardless of the order and the presence of goods to be warmed both below and above the needle rim plane, cut the blank slip au and determine the cutting point itself targeted.

Explanation of the essence of the invention

Elimination of the previous devices adhering!, Long al, the invention solves the problem of developing a device for cutting the Leerketteis that is not in the trajectory of the aufgestoßenen on the Nadelkranz pieces of goods and ensures a completely unobstructed workflow.

According to the invention, the object is achieved in that behind the Fonturennadeln and below the needle plane eln «provided in an obliquely downward catcher holder achsial sliding Leerkettelfänger whose upper end has a sohräge ramp surface and at the highest point of the ramp surface transverse groove. At the upper end of the catcher holder, a knife known per se is arranged rigidly, the cutting edge of which runs at right angles to the direction of movement of the empty warp catcher.

The inclination of the Leerkettelfängers is about 45 °. The ramp surface at its upper end is directed horizontally. The Leerkettelfänger is located with its ramp surface at rest under the Fortkettler the Rundkettelmaschine, which has a recess in this area.

The catcher holder is carried by a tripod. The lower part of the Leerkettelfängers is by means of compression spring and collar on a lever, which in turn is in communication with a drive, such as an electromagnet. The actuation of the electromagnet is optionally by the pulse of the Kettelgut scanning

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photocell or triggered by an electromechanical button ·

The device according to the invention enables an automatically controlled cutting of the empty chain on large-corrugated circular linking machines even under the conditions of the top tricot tag chaining. The device "brings daduroh the usual yet in this sector manual cutting through the empty chain in .Wegfall.

By located below the cover plate of the large-hoop-round linking machine device dirt and associated interference are avoided. The device of the invention leads instead of the previously considerable workload by the conventional method to a high increase in labor productivity in the linking process.

Execution example

The invention will be explained in more detail below using an exemplary embodiment. In the accompanying drawings show:

Fig. 1: the top view of the device

(Leerkettelfänger is in catch position)

2 is a side view of the Leerkettelfängers, partially in section (catch position)

3 is a side view of the Leerkettelfänger s, partly in section (cutting or basic position)

In the upper part of a large wreath-round linking machine is between the gripper arm 1 of the linking device and the worm gear 2 for the Nadelkranzbewegung a

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Tripod 3 mounted by screw. The stand carries a tubular catcher holder 4, in dom a Leerkettelfanger 5 is mounted axially sliding. The stand 3 with the catcher holder 4 is designed so that the Leerkettelfänger 5 comes to rest in a slope of about 45 °. The Leerkettelfänger 5 has at its upper end on an inclined ramp surface 6, which is located by the inclination of the Leerkettelfängers 3 in the horizontal. At the highest point of this ramp surface, a transverse groove 7 is incorporated. In the basic position, the empty-chain catcher 5 with its ramp surface 6 is below the conveyor 8 of the circular linking machine. The conveyor 8 has in this area a recess for the passage of the empty-chain catcher 5. At the lower end of the Leerkettelfängers 5, which protrudes from the catcher holder 4, there is a compression spring 9, which holds the Leerkettelfänger 5 in its lowest position, the so-called basic position. A collar 10 serves as a limit _e

On one side of the upper end of the catcher holder 4, a rigid knife 11 is arranged so that it is directed at an acute angle of 5 ... 10 ° to Leerkettelfänger 5 and its cutting edge 12 at right angles to the longitudinal axis, ie · to the direction of movement of the Leerkettelfängers. 5 runs. By a collar 13 and a locking screw 14, the knife 11 is adjusted and held so that it rests with its cutting edge 12 directly to the Leerkettelfänger 5. The upper edge of the groove 7 forms the counter-blade, which overlaps slightly in cutting or basic position with aer blade 12 of the blade 11.

The entire device is mounted below the needle level formed by the Fonturennadeln 15 and is covered by the cover plate of the machine shell with.

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1216 8

As a drive for the movement of the Leerkettelfängers 5 is for example an electromagnet 16 in conjunction with a lever 17 which rests on the lower end of the Leerkettelfängers 5.

The actuation of the electromagnet 16 is carried out either by an electromechanical pushbutton, not shown, in the form of a pressure switch contact or hei automatic operation by the pulse of a light barrier 18j19, which scans the Kettelgut and brings about an electronic amplifier circuit, a relay to respond. The solenoid 16 is thereby fed to a 24 V DC transformed current.

The operation of the device is as follows:

The zusammenzusügende example of collar and jacket part, aufgeschoßene Kettelware happens when the machine is turned to the left sewing needle 20 and the Fortkettler 8 and is sewn. In each case between the two successive Obertrikotagen existing gap is formed in conjunction with the Fortköttler 8 a blank · In order to cut through the blank slip, a button is pressed. Thereupon, the electromagnet 16 attracts and moves over the lever 17, the Leerkettelfänger 5 through the recess of the Fortkettlers 8 forward. The Leerkettelfänger 5 moves with the tip between the upper edge of the Fonturemiadeln 15 and the formed Leerkettal through to the upper end position. The blank sheet is pulled over the Auflauff3.äche 6 of Leerkettelfängers 5 and falls into the groove behind it 7, where he is held v /. After releasing the button, the electromagnet 16 drops again. By the compression spring 9 of Leerkettelfänger 5 is retracted to the basic position. The blank slip, which is located in the hat 7 of the empty-warp catcher 5, is pulled against the knife 11 and cut off during this backward movement. "

Claims (5)

_7_ «.. 12168 'Invention claims 1 · Device sura Duronsohneiden the Leerketteis, especially on Großkranz-Rundkettelmaschinen, characterized in that behind the Fonturennadeln (15) and below the needle level in an obliquely downward catcher holder (4) axially sliding Leerkettelfanger (5) is provided, whose upper end a slanted ramp surface (6) and at the highest point of the ramp surface (6) transverse groove (7), and that at the upper end of the catcher holder (4) a per se known knife (11) is rigidly arranged, the cutting edge (12) perpendicular to the direction of movement of the empty warp catcher (5) · 2 · Device according to point 1, characterized in that the inclined position of the empty warp catcher (5) is approximately 45 ° and the ramp surface (6) is directed horizontally at its upper end. 3 · Device according to point 1 mia 2, characterized in that the empty chain catcher (5) with its run-on surface (6) is in the rest position under the chain conveyor (8) of the circular linking machine which has a recess in this area. Device according to points 1 to 3, characterized in that the catcher beater (4) is carried by a stand (3) and the lower part of the empty warp catcher (5) bears against a lever (17) by means of a compression spring (9) and adjusting ring (10), which in turn is connected to a drive, for example an electromagnet (16) 5. The device according to item 1 to 4, characterized in that the actuation of the electric motor (16) is triggered either by the ImpuLs of a the Eattelgut scanning photocell (I85 19) or by an electromechanical button ·