CZ298009B6 - Coupling for driving a hinged apparatus disk - Google Patents

Abstract

A coupling driving flange (5) is fixedly arranged at the end of a shaft (1). Said coupling driving flange (5) has three longitudinal grooves where two of them accommodate springs (7) fastened therein by screws (6) and the third groove, being deeper, accommodates a spring (9) fastened therein by means of a screw (8). A roller (10) is arranged on the spring (9) face. A driven shaft (11) of an apparatus disk extends into a central hole of the driving flange (5) to thereby ensuring concentricity and rigidity of the whole arrangement of the driven shaft (11) and the driving flange (5). At this end of the driven shaft (11), there is slidably mounted a driven flange (12) provided with longitudinal grooves (120) and (121) the angular arrangement of which is the same as that of the grooves accommodating the springs (7) and (9) and which fits therein when the coupling is engaged. Another spring (14), reaching or being located in a groove (15) performed in a shoulder (111) of the driven shaft (11) is further accommodated in the groove (120) and fastened by means of a screw (13).

Description

Clutch for driving the tilting instrument panel

Technical field

BACKGROUND OF THE INVENTION 1. Field of the Invention The invention relates to a clutch for driving a hinged instrument plate of a circular knitting machine for the production of hosiery or the like, which consists of non-sloping drive flanges connected to the machine drive device and the driven flange.

BACKGROUND OF THE INVENTION

Known single-cylinder circular knitting machines for the production of hosiery resp. the sock goods are provided with an instrument plate in which the patches are arranged for catching and hanging the double hem. There is also a circular saw for thread cutting. The drive of the instrument plate is derived from the drive of the needle cylinder, with high demands on precision and stiffness of the drive without play.

When repairing the machine, when it is necessary to open the console on which the instrument plate is placed, the gear clutch disengaged here is disconnected and the instrument plate drive is disconnected. When troubleshooting, the operator usually rotates the needle cylinder, thereby disturbing the angular position of the instrument plate and needle cylinder. The known design of the toothed clutch, wherein the spring-loaded part is designed as part of an axially displaceable shaft to which a direct-toothed gear is associated in its upper part, also allows axial displacement of the wheel in the gear. In other known machines which use, for example, bevel gears and a toothed belt drive to drive the instrument plate, or there is a device for programmatically controlled instrument plate drive in the upper part of the driven shaft during knitting, axial displacement of the driven shaft is not possible. Here again, however, it is required for easy and error-free operation at any time to swivel the instrument plate into the working position and lower the machine.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a safe, simple and reliable clutch engagement even for such machines.

SUMMARY OF THE INVENTION

The aforementioned disadvantages are eliminated by the clutch for driving the hinged instrument plate of a circular knitting machine for making hosiery or the like, which consists of a non-movable drive flange connected to the machine drive device and a driven flange, the essence of which is an instrument plate drive that extends into the central bore of the non-movable drive flange.

According to a preferred embodiment, a longitudinal groove is formed in the sliding drive flange for engaging a key of the drive flange in which the key engaging a groove formed in the drive shaft is fixed.

Further, according to a preferred embodiment on the tongue, a ring abuts with its peripheral part on the microswitch sensor for detecting the position of the clutch.

Finally, according to a preferred embodiment, the groove is formed to accommodate a larger diameter than the diameter of the driven shaft.

-1 CZ 298009 B6

Overview of the drawings

The device according to the invention is shown in the accompanying drawings, in which FIG. 1 shows an axial section of the coupling in the closed position and FIG. 2 an axial section of the coupling in the open position.

DETAILED DESCRIPTION OF THE INVENTION

The known single-cylinder circular knitting machine for the production of socks and the like is provided with an instrument plate whose drive is derived from the drive of the needle cylinder of the machine. From the needle cylinder drive a vertical shaft 1 whose upper end is mounted in a bearing 2 in the upper flange 3 of the machine, on which the console 4 with the instrument plate is mounted, extends. A clutch drive flange 5 is fixed at the end of the shaft 1. The clutch drive flange 5 has three longitudinal grooves, in which the tongues 7 are fixed in two of the screws 6 and the tongue 9 in the third groove, which is deeper, by means of a screw 8. The roller 10 is arranged on the tongue 9. the drive plate drive shaft 11 engages the alignment and stiffness of the entire drive shaft 11 and drive flange arrangement 5. At this end of the drive shaft 11, a drive flange 12 is displaceably provided with longitudinal grooves 120 and 121 of the same angular configuration as the grooves where they are the tongues 7 and 9, which engage with them when the clutch is engaged. In the groove 120, a further tongue 14, which engages or protrudes, is fastened by means of a screw 13. is mounted in a groove 15 formed in the shoulder 111 of the driven shaft 1T. Between the shoulder 111 and the driven flange 12 there is arranged a compression spring 16 whose ends abut on the bottom of the holes formed in said shoulder 111 and the driven flange 12. The driven shaft 11 is then mounted in a bracket 4. At the end of the tongue 14 that protrudes from the groove 120 a ring 18 is fastened by a screw 17 so that its axis is identical with the axis of the driven shaft 11. A sensor 191 of the microswitch 19, which is mounted on the bracket 4, abuts the circumference of the ring 18.

The operation of the device described above is as follows. When the clutch is engaged, the torque is transmitted via the tongues 9 and 7 to the driven flange 12 and further via the tongue 14 to the driven shaft 11. The ring 18 is thus in the lower position and the microswitch 19 is opened. When the bracket is folded up, the clutch disengages. Upon subsequent handling of the machine, the needle cylinder is also rotated, which also drives the drive shaft 1. When the bracket 4 is tilted, the driven shaft 11 is first inserted into the central hole of the drive flange 5 and axial alignment of the clutch assembly within tolerances is provided. and 9, due to the rotation of the drive shaft 1, are angularly outside the grooves 120 and 121 of the driven flange 12. When the bracket 4 is fully closed, the tongue 9 with its roller 10 abutting the face of the driven flange 12 pushes the driven flange 12 against the compression spring 16 into its upper position. 2. The ring 18 pushes the sensor 191 and the microswitch 19 closes. When it is closed, a signal is given to the machine control system which causes the knitting program to be blocked and the machine starts to rotate at low speed. In this low speed movement, the roller 10 rolls on the tongue 9 over the face of the driven flange 12, passing through the grooves 120, which are shallower, so that they do not engage them. Once the roller 10 on the tongue 9 reaches the angular position of the groove 121, due to the action of the compression spring 16 on the driven flange 12, it is moved downward as shown in Fig. 1 and the tongue 9 is inserted into the groove 121 The drive flange 12 and the drive flange 5 are engaged and the clutch transmits torque. At the same time, the ring 18 drops to open the microswitch 19 and the machine can continue knitting because the machine program is unlocked due to the next microswitch signal.

Various modifications are possible within the scope of the invention, e.g. the grooves in both coupling flanges may be larger, but excluding the roller tongue. This also allows better fit of the sensor contact ring.

Claims (4)

PATENT CLAIMS A clutch for driving a hinged instrument plate of a circular knitting machine for making hosiery or the like, comprising a non-movable drive flange connected to a machine drive device and a driven flange, characterized in that the driven flange (12) is supported resiliently displaceably on the driven shaft (11) an instrument plate drive that extends into the central hole of the non-movable drive flange (5). Coupling according to claim 1, characterized in that a longitudinal groove (120) is formed in the sliding driven flange (12) to engage a tongue (7) of the drive flange (5) in which the tongue (14) engaging the groove is fixed. (15) formed in the driven shaft (11). Coupling according to Claims 1 and 2, characterized in that a ring (18) is fixedly mounted on the tongue (14) by its circumferential part on the sensor (191) of the microswitch (19) for detecting the position of the coupling. A clutch according to claim 2, characterized in that the groove (15) is formed on a shoulder (111) larger than the diameter of the driven shaft (11).