FR2553103A1 - DEVICE FOR CONTROLLING UP AND DOWN OF RING HOLDERS OF TEXTILE MACHINERY SUCH AS RETAINER - Google Patents

Abstract

RISE-AND-DROP CONTROL DEVICE FOR TEXTILE MACHINE RING HOLDERS. IT IS OBTAINED BY MEANS OF A MOTOR M DRIVEN ALTERNATIVELY IN ONE DIRECTION OR THE OTHER AND WHOSE ROTATION MOVEMENT IS TRANSFORMED INTO ALTERNATIVE MOVEMENT BY A SCREW 10 AND NUT 11 SYSTEM. THIS M MOTOR IS PILOT BY A PROGRAMMABLE PLC 16 AND A CODE READER 17 IS ASSOCIATED WITH NUT 11 COMMANDING THE MONTE-ET-BAISSE MOVEMENT AND ALLOWING, AT EVERY MOMENT, TO READ THE POSITION OF THE ORGAN (STRAP) CONTROLLING THE RING BENCH, WHICH ALLOWS TO CONTROL A LAW OF PRE-ESTABLISHED SEQUENCES DEPENDING ON THE COIL TO BE REALIZED.

Description

DEVICE FOR CONTROLLING THE LIFT AND DROP OF MACHINE HOLDERS

  TEXTILES SUCH AS BUSINESSES TO RETORD.

  The present invention relates to an improvement in the control of up and down ring holders of textile machines, such as twisting machines. To date, on the trades of the aforementioned type, the control of up and down is obtained by means of systems

  mechanical (cam boxes) that can simultaneously control all positions that includes the machine.

  It is well known that it is necessary, depending on the type of winding achieved, the nature of the wire, to change the rise and fall during the formation of the winding. The mechanical systems used to date make it possible to obtain these results, but it must be admitted that they

lack flexibility.

  However, it has been found, and this is the object of the present invention, a perfect control device 20 ', simple, which not only allows to obtain precise control of the up and down movement but also makes it possible to change the winding parameters practically instantaneously as a function of the desired winding, for example stroke length, type of the formed coil (biconic cops, equal or unequal cheek coils,

bottle reels).

  In general, the device according to the invention for controlling the raising and lowering movement of the ring carriers of a textile machine is of the type in which the transmission of the movement to the ring carriers is obtained by the intermediate of a flexible strap associated with a rotary sector and controlled by a rigid plate common to several straps, it is characterized by the fact: on the one hand, the reciprocating longitudinal displacement -2 of the rigid plate is obtained by means of a motor driven alternately in one direction and the other and whose rotational movement is converted into reciprocating motion by a screw and nut system; and that, secondly, said servo motor is - controlled by a programmable controller; a coded reader is associated with the nut (or carriage) controlling the up-and-down movement and allows, at any moment, to read the position of the strap and consequently that of the ring bench on the machine , which makes it possible to drive a law of pre-established sequences according to the coil

to achieve.

  Other features of the device according to the invention as well as the advantages it brings will however be better understood thanks to the embodiment given hereinafter by way of indication and not limitation and which is illustrated by the diagrams appended in which: Figure 1 is a block diagram showing the manner in which control of the up-and-down movement of a ring carrier is achieved by means of a device according to the invention; FIG. 2 is a diagrammatic view, in detail, showing the manner in which control of the up and down operation is achieved by means of a programmable logic controller; FIG. 3 is a general connection detail diagram of a programmable logic controller used for

implementation of the invention.

  Referring to FIG. 1, the invention therefore concerns a device for controlling the upward and downward movement of a ring-carrier of a textile machine. Such a machine is well known to technicians.

will not be described in detail.

  In known manner, the upward and downward movement of the ring carrier is transmitted via a

2553 1 03

  -3 rigid flat (1) common to several straps (2) and which acts on a sector (3) controlling the support elements (4) mounted sliding in smooth bearings (5) l The control of the rigid plate (1) is obtained by a motor-brain M controlled alternately in one direction

  and in the other This brain-motor M controls a shaft (6) mounted on bearings (7-8) in a bearing (9).

  This shaft (6) rotates in one direction and in the other a screw (10) on which is mounted a system 10 nut (carriage) (11) whose end (12) is connected

  flat (1) A roller (13) ensures guiding.

  The motor M can be mounted either directly on

  the shaft (6), as shown in FIG. 2, transmit its movement to the screw (10) by means of return elements (14-15).

  In order to obtain the various parameters for producing the desired coil, the screw and nut system (10-11) is associated with a control assembly and

  as described in Figure 2.

  This control and command set consists essentially of a designated programmable logic controller

  by the general reference (16).

  The inputs of this programmable controller are essentially fed by an encoder (17) associated with the nut (carriage) (11) which reads at each instant the position of said

  nut (11) and consequently, that of the strap so the position of the ring of rings on the machine.

  End-of-stroke devices (18-19) are of course provided.

  This programmable controller (16) transmits the information to an electronic variateut (20) which therefore controls

  servo motor M (reversing the direction of rotation, speed variation).

  FIG. 3 illustrates in detail a programmable logic controller (16) produced in accordance with the invention. FIG. 3 is a schematic representation, established in a conventional manner, which enables a person skilled in the art to understand how the controller capable of to be used for the implementation of the invention As a result, the structure of such an automaton

  will not be described in detail as a simplification measure.

  It should be noted, however, that such an automaton

  (16) makes it possible to control both a motor spindle (MTB) type winding system and a bank machine (BA) system. In addition, it can also control the feed of the wire delivery unit (CF).

  This automaton can be used with a pre-recorded cassette player A 6, according to each of the

  types of coils that one wishes to achieve.

  It can also be associated with a display screen (A 3), allowing each moment to know the length, the diameter of the winding ,, to a programming keyboard A 5, an input keyboard of different

parameters A 4.

  With such an up-and-down control system, it is possible to obtain a very large variation of the stroke (for example between 200 mm and 420 mm), to modify the shape of the winding formed as a function of the material and the type of winding to be made (biconical alim terned or degressive, equal or unequal cheek coils, bottle coils) It is possible to obtain a cone of different value, to vary the removal of the wire to achieve a jamming, to provide training

of a reserve.

  Of course, the possibility of bringing the ring of rings down to facilitate digging

  coils is also possible.

  Means for detecting stop of the ring bank

can also be used.

  Of course, the invention is not limited to the embodiment described above, but it covers all the variants made in the same spirit. Thus, such a device is particularly adapted to allow modification during training. the speed of movement of the ring bank on the part and

other than average speed.

Claims (1)

  1 / Control device for raising and lowering the ring-holders of textile machines such as twisting machines, of the type in which the transmission of the movement to the ring-carrier is obtained by means of a flexible strap ( 2) associated with a rotary sector (3) and controlled by a rigid plate (1) common to several straps, characterized by the fact that on the one hand, the reciprocating longitudinal displacement of the rigid plate (1) is obtained by means of a motor M driven alternately in one direction or in-the-other and whose rotational movement is converted into reciprocating movement by a screw system (10) and nut (11); and that, on the other hand, said servomotor M is driven by a programmable automaton (16), a coded reader (17) being associated with the nut (11) (or carriage) controlling the upward movement and drop and allowing, at any moment, to read the position of the strap (2) and consequently that of the ring bench on the machine, which allows to pilot a law of predetermined sequences as a function of the coil to realize.