SU546288A3 - Device for controlling the rotation of the needles in the machine - Google Patents

Description

leny. turning the tabs of needles, cut; in fig. 1 - the same for circular machines; in fig. 3 - zychkova needle with different angular positions mI pinch when it is opened in the process of rectilinear movement of the needle; FIG. 4 - the same, in case of non-linear movement of the needle (circular machine); on fit. 5 - a permanent magnet in axonometric view when opening the needle tabs; on) FIG. 6 - the same, in: id from the side; in fig. 7 - the same, top view; in fig. 8 is a schematic of the location of the needles of the needles with respect to several matnite pole surfaces in the process of opening; in fig. 9, 10 - parameters necessary for obtaining magnetic surfaces when manufacturing matnit.

PLO: The hauling machine (Fig. 1) has at least one needle bed / with grooves, in which the tongue needles 2 are brought into reciprocating movement. The needle needles 2 are received from the loop-forming system 3 fixed on the carriage 4.

Kruglov zalna machine {FIG. 2) i. Has a fixedly mounted or rotatably needle cylinder 5 with grooves 6 in which needles 2 and fi are also placed

7 which interact with the locking system. My (not shown).

The device 8 for controlling the rotation of the needles of the needles is respectively fixed on the machine.

FIG. 3 shows the different positions of the tabs 9. In the position a, the tab 9 is rotated about the axis 10 of the needle and completely closes K1ru4ok G1 nog.in and the needle, while the tab 9 forms with the rod 12 the minimum angle PO. In the positions b, c, the tongue 9 forms with the rod 12, respectively, the angles | 3i and p2.

At position d at the angle P3, the tongue is open, for example, at an angle of 140 °.

The transition from position a to position d can be carried out in various ways. If we are talking about a planar dome machine or a circular machine with a stationary and hollow cylinder, the tip of the eye | B 9 at iB quiescent needle 2 located 2 moves along a circular path 13, the midpoint of which is axis 10. If the needles 2 in the process of opening (closing) produce a linear, perpendicular to horizontal movement (for example, arrow L in Fig. 3), then a linear movement is imposed on the circular movement so that in general the edge moves along the trajectory 14. It concerns round knitting machine with stationary needle cylinder. If, however, we are talking about the tongues of a circular machine with a rotating cylinder, the tips of the tongues in the process of opening (closing) move along a trajectory that lies on the surface of an imaginary toroid, whose radii, on the one hand, correspond to the radius

needle cylinder, and on the other, the length of the needle tongue.

The trajectory ino of which the tips of the tabs move also depends on the speed at which the tabs deviate. IF the tongues deviate at a constant angular velocity and the linear movement of the needles also has a constant speed, then in this case the movement path of the vertices of the tabs corresponds to a helix, while at different angular speeds the needle and linear needle movement speeds can take place M1 many different trajectories.

FIG. 4 shows the version of which

Five tongue needles make another movement in the direction of rotation of the needle cylinder.

The device 8 for controlling the rotation of the needle tabs comprises a permanent magnet 15,

mostly square shape, the working surface of which 16 is made so that the tabs of the 9 needles 2 moving in the direction of the arrow "L" gradually open.

5 In view of the fact that the precise manufacture of a helical surface presents technical difficulties, its elliptical shape is allowed. The distance of the working pole surface 16 from the needles 2 is chosen so that

So that the surface 16 could not be affected by the tabs 9, even if the needles are supplied to a polar surface with already partially open tabs (in case of pinching, bending, etc.). In zone 17

The 5 needle inlets, the pole surface 16, has a higher magnetic field strength for matching the acceleration tabs 9 necessary to overcome the initial friction and inertia. In the remainder, the bass surface may have a relatively weak field strength, which is only necessary to retain and direct the continuously opening tabs 9. In view of the fact that the pole surface 16 has a special shape,

The 5 tabs of the 9 needles 2 on their way from the pole 17 to the other. The end of the pole surface 16 is positioned so that they are approximately perpendicular to the surface 16, while the lines of force are magnetic.

0 the floor runs parallel to the needle tabs. Due to this, the tabs are constantly under control and are not subjected to additional accelerations or decelerations when turning into one or another Staron.

| Polar surface 16 may consist of several, near. individual magnets with working areas 18 (Fig. 8).

An example of the manufacture of matnita (fit. 9, 10). Pin 9 length is 4.5 mm, air

0 the gap between the tips of the tabs and the pole surface is 0.5 mm, the distance from the axis 10 to the pole surface is 5 mm.

The angle | 3 ° 15 ° and the RP angle of the 140 ° maximum open tab, which is deployed on

5 cut X, | equal to. 20 mm.

A finger mill / 10 mm diameter is used to obtain a pole-sized surface suitable for these parameters.

The installation angle a is between the axis of the cutter and the workpiece (rectangular knot) and the length 5 of the workpiece can be calculated based on the values of p „and X.

IF needle needles should open (close) s at several locations in the filling machine, it is advisable for all pole surfaces to provide the same polarity to avoid unwanted snf effects due to residual magnetism in the needles.

Claims (3)

Invention Formula I. A device for controlling the rotation of the tongues in the ball in the hall machine, which is located on: the needle tabs are machined, in order to increase the reliability of opening and closing LANGUAGES of the needles, the noBepxiHOCTb pole of the magnet facing the needle needles, has a shape corresponding to the shape of the surface formed by a set of equidistant tab trajectories moved during the loop formation process. 2. Device floor. 1, characterized in that the luyl surface of 1 molnite facing the tongue of the tongue has a screw, elliptical or toroidal shape. 3. The device according to claim 1, characterized in that the magnet in the zone of entry of the tabs has a pole surface, the intensity of the magnetic field of which exceeds the intensity of the magnetic field of the remaining sections of the pole surface. The source of information taken into account during the examination: 1. US patent No. 2997866; cl. 66-111, 1961. Yu / 7 (/ 77 (fu2 5 -c 75 77 -ten 75 .9 Vu Yu