FR2514038A1 - DEVICE FOR REPLACING COLORED WEFT YARNS IN NON-SHUTTLE WEAVING MATERIALS - Google Patents

Abstract

DEVICE FOR REPLACING WEFT YARNS IN A SHUTTLE Loom, INCLUDING AN ECCENTRIC 35 COMING IN CONTACT WITH A LEVER 41 COUPLING TO A SLIDE 33 IN WHICH A V-SHAPED GROOVE 34 IN WHICH A BRANCH CAN ENGAGE 15 IN THE SHAPE OF A BEC OF A LEVER 13 WITH TWO BRANCHES MOUNTED IN THE FORK 21 LOCATED ABOVE SLIDE 33, BRANCH 15 IS TURNED TOWARDS BRANCH 8 OF A LEVER 5 WITH THREE BRANCHES OF WHICH THE OPPOSITE BRANCH 7 IS TURNED TOWARDS FRAME 3 OF AN ELECTRO-MAGNET 2, AND THE PADS 30, 31 OF THE FORK 21 ARE DIRECTED TOWARDS THE TWO ENDS OF THE COLOR SECTOR 48 FIXED RIGIDLY ON A TUBE 45 AT ONE END OF WHICH ARE PINS 46 , 47 ON WHICH RODS 52, 53 ARE MOUNTED, THE OTHER END OF WHICH IS COUPLED WITH PINS 54, 55 SHAPED ON THE END OF A TUBE 57 ON WHICH THE WEFT FEEDING DEVICE 58 IS RIGIDLY MOUNTED.

Description

Device To replace colored weft threads in

  non-shuttle weaving looms.

  The present invention relates to a device for replacing colored weft threads in non-shuttle weaving looms, which are used in the textile industry. We know a device to replace the colored weft threads in non-shuttle weaving looms, which includes a thread guide with grooves where the loaders are located, The weft guide is coupled with a toothed wheel

  which meshes with a rack supported by a tree.

  The latter comprises an arm pushed by a spring towards

  the cams of the program chain.

  A drawback of this device lies in a fairly limited design ratio and rapid wear of the

program chain.

  The object of the invention is to provide a device for replacing colored weft threads in a shuttleless weaving loom, thereby widening the possibilities of drawing and avoiding all the conditions causing defects to appear as a result of mechanical wear, and simultaneously creating conditions for rapid programming

  large and varied raster reports.

  The device for replacing the colored weft threads in non-shuttle weaving looms is used to control a weft guide with longitudinal grooves cut radially to support the weft It comprises an eccentric mounted on the bent shaft of the loom weaving said eccentric comes into contact with a lever with a branch whose end is coupled, by a ball joint, with an axially movable slide having a VS groove towards which is directed a beak-shaped branch of a lever two branches mounted in a slot formed in an axially movable fork located above this slide Above this branch is arranged another branch of a lever with three branches and the armature of an electromagnet is directed towards the arm opposite of of

three-pronged lever.

  At the ends of the fork are mounted adjustable buffers which are directed towards the two ends of a colored sector rigidly fixed on a tube mounted on a shaft At one end of the tube are pins coupled to two rods The other end of said rods is also coupled, by means of a ball joint, to

  pins formed on the end of a rigid coupled tube-

  with a weft feed and guiding device

  and mounted coaxially on a tree.

  The rear ends of the slide and the fork are coupled to springs, the other end of which is coupled to the body of the device. Towards this is an inverted U-shaped frame which surrounds, at the

  by means of vertical branches fixed on the body of the device

  tif, the slide, the fork and the vertical branch of the lever with three branches towards which is directed the horizontal part of the frame in the shape of an inverted U The vertical branches of said frame come into contact, at their lower end, with projections provided on the bent tree.

  The bent end of the armature of the electro-

  magnet rests on a horizontal branch of the lever with three branches whose vertical branch is connected to a spring whose other end is fixed on the body of the device, and the vertical part of the lever with two branches in the shape of X is connected to a weaker spring whose other end

  is connected to the vertical branch of the fork.

  A c 8 t of the latter is formed a housing in which is mounted, on a bearing, one end of a rod around which is mounted a spring The other end of the spring is rigidly coupled to the rod which is mounted in a housing located on the body of the device -

  The advantages of the present invention are deter-

  undermined mainly by the possibility of using electronic programming of drawing reports as a function of colors during weaving, while the existing weft feeders of the Zulzer and STB looms do not offer this possibility. , the programming time of the drawings is shortened by several times and

  expenses for metal cams are no longer necessary

  res Two-color looms can be trans-

  trained in four and six color looms.

  The present invention will be better understood using

  of the following description of a preferred embodiment

  but not limiting shown in the accompanying drawing, in which the single figure is an axonometric view of the device

feed for a color.

  The electromagnet 2 comprises an L-shaped armature 3 which is coupled to the body II at one end by a spring 1 The bent branch 4 of this armature 4 is supported on the branch 7 of the lever 5 with three branches which is mounted, by means of a bearing, on the axis 10 The branch 6 of the lever 5 with three branches is connected to a spring 12, the other end of which is coupled to the body 11 The branch 8 of the lever 5 with three branches rests on the level of its projecting part 9, on the branch 15 in the form of a beak of the lever 13 with two branches which is mounted so as to be able to rotate on the axis 17, in the slot 19 formed in the fork 21, this axis 17 being

  rigidly fixed on the axially movable fork 21.

  On the branch 14 of the lever 13 with two branches is fixed the spring 18 whose other end is connected to the vertical branch 22 of the fork 21 movable axially On the rear end of the fork 21 is fixed the spring

  the opposite end of which is connected to the body 11.

  A c 8 tee of the vertical branch 22 of the fork 21 is formed a housing 23 in which the rod 25 is mounted on a bearing On this is rigidly fixed a base 24 in which is engaged the spring 26 The other end of the spring 26 is engaged in the base 27 rigidly fixed on the rod 28, the other end of which is mounted, by means of a

  bearing, in a housing 29 of the body 11.

  Under the branch 15 in the form of a beak of the lever 13 with two branches, on the slide 33 is formed a V-shaped groove 34 in which engages the beak 16 of the lever 13 with two branches On the lower part of the slide 33 is formed a housing 42 in which is mounted, by means of a bearing, the lever 41, the other end of which is mounted on the bearing 43 of the body 11 the cam 35, supported by the shaft

  bent 36, comes into contact with the lever 41.

  The vertical branches 38 of the frame 39, 38, the

  horizontal part 39 comes into contact with the vertical branch

  wedge 6 of the lever 5 with three branches, are mounted on the body 11, by means of a bearing, at 40, at the two external parts of the body 11 The finger 37, which is directed towards the vertical branches 38 and the frame 38, 39 U-shaped

  inverted, is rigidly fixed on the bent shaft 36.

  Tree 44, which is in a horizontal plane

  passing through the axis of the fork 21, is arranged perpendicular

  with respect to the pads 30 and 31 of the fork 21. The tube 45, which has pins 46 and 47 at one end, is mounted coaxially on the shaft 44 Segments 48, 49, 50, 51 are rigidly fixed on the tube 45 according to different angles On the pins 46, 47 are hung vertical rods 52, 53 whose lower end is mounted on a respective pin 54, 55 of a tube 57 in which the shaft 56 is mounted coaxially the device weft feed 58, having grooves 59, 60,

  61, 62 for the colors, is rigidly mounted on the tube 57.

  The device operates as follows: When starting the loom, the bent shaft 36 begins to rotate and under the action of the cam 35 and the spring 32 of the slide 33, the lever 41 begins to rotate around the bearing 43 and passes from position I to position II As a result, the slide 33 passes from its position

  extreme rear in its extreme forward position and returns.

  At each turn of the bent shaft 36, the finger 37 pushes the vertical branches 38 of the frame 38, 39 in the shape of an inverted V, the horizontal part 39 of which is pushed towards the vertical branch of the lever 5 with three branches and makes it rotate anti-clockwise around the axis 10, and the branch 7 of this lever also rotates in the same direction and is separated from the bent part 4 of the frame 3 At this time, the automatic system program sends an electrical impulse to the electromagnet 2 and the armature 3 is attracted by the electromagnet 2, and its bent part 4 does not rub on the branch 7 of the lever 5 with three branches and does not hold it at this time Once the finger 37 of the bent shaft 36 no longer presses on the vertical branch 38 of the frame 38, 39 in the shape of an inverted U and the horizontal part 39 no longer presses on the vertical branch 6 of the lever 5 to three branches, said lever turns in the

  clockwise under the action of spring 12.

  The branch 8 of the lever 5 with three branches also rotates in this direction and its projecting part 9 presses on the beak-shaped branch of the lever 13 with two branches Because the spring 18 pulling on the vertical branch 14 of the lever 13 with two branches is weaker than the spring 12, the latter overcomes the resistance exerted by the horizontal branch 15 of the lever 13 with two branches and makes it rotate counterclockwise The spout 16 of the lever 13 with two branches spring vecs the bottom of the slot 19 of the fork 21 and engages in the V-shaped groove 34 of the slide 33 when the latter is in position I. When the cam 35 brings the lever 41 in the position II, the slide 33 passes into its extreme front position and drives the fork 21 which in turn overcomes the force of the stop spring 26, the rod 25 rotates in the housing 29 and, under the action of the spring 26, stops the

  fork 21 in its extreme front position II.

  During the movement of the fork 21 from position I to position II, the buffer 30 of the fork presses on the upper part of the color segment 48 which is rotated forcibly in a clockwise direction at the time o the pad 31 of the fork comes in

  contact with the lower part of color segment 48.

  In this position, the lever 52 rises and the lever 53 descends and, as a result of the forces they exert on the pins 54 and 55, they rotate the tube 57 around the shaft 56, and at the same time as the tube 57 the weft feeder 58 rotates clockwise

of a watch.

  Since no impulse is applied to the electromagnet, its armature 3, under the action of the spring 1, stops the branch 7 of the lever 5 with three branches which rotates clockwise, and the spout 16 of the L-shaped lever 13 emerges from the slide 21 which,

  under the action of the spring 20, returns to its initial position.

  Another fork advances for another color.

  The following ranges work on the same principle. As goes without saying and as it already follows from the foregoing, the invention is in no way limited to that of its modes of application, no more than that of the embodiments of its various parts, having been more particularly envisaged; she embraces it, at

otherwise, all variants.

Claims (8)

  1 Device for replacing weft threads in non-shuttle weaving looms, comprising a device   weft feeder comprising longitudinal grooves   the cutouts radially for the frame supports, and an eccentric mounted on the bent shaft, characterized in that the eccentric (35), mounted on the bent shaft (36), comes into contact with a lever (41) to a branch, one end of which is coupled to an axially movable slide (33) in which a V-shaped groove (34) is formed towards which is directed a branch (15) in the form of a beak of a lever (13) with two branches mounted in the axially movable fork (21) placed above the slide (33), the branch (15) is turned towards the branch (8) of a lever (5) with three branches including the opposite branch (7 ) is turned towards the frame (3) of an electromagnet (2), and the buffers (30,31) of the fork mounted in an adjustable manner on the free ends of the fork (21) are directed towards the two ends of the colored sector (48) which is rigidly fixed to a tube (45) coaxially mounted on a shaft (44) and at one end of which is ent pins (46, 47) on which are mounted rods (52, 53) whose other end is coupled to pins (54, 55) formed on the end of a tube (57) mounted coaxially around '' a shaft (56) and on which the device is rigidly mounted weft feed (58).   2 Device according to claim 1, character-   risé in that springs (32, 20) connect the slide (33) and the fork (21), at their end   rear, with the body (11) of the device.   3 Device according to claim 1, character-   laughed in that an inverted U-shaped frame (38, 39) surrounds, by its vertical branches (38) mounted on the body (11) of the device, the slide (33), the fork (21) and the branch (6) of the lever (5) with three branches, while the horizontal branch (9) is directed towards the branch (15) lever (13) with two branches.   4 Device according to any one of claims 1 to 3, characterized in that the vertical branches of the frame (38, 39) in the shape of an inverted U come into contact, at their lower end, with the part   projection (37) of the bent shaft (36).   5 Device according to claim 1, character-   laughed in that the bent end of the frame (3) rests   on the branch (7) of the lever (5) with three branches.   6 Device according to claim 1, character-   risé in that in the fork (21) is formed a housing (23) in which one end of a rod (25) is mounted, by means of a bearing, this rod supporting a base in which is placed a spring ( 26) the other end of which is rigidly fixed to the rod (28) which is mounted at the other end by means of a bearing, in a housing (29) located on the body (11) of the device.   7 Device according to claim 1, character-   laughed in that the horizontal branch (15) in the form of a beak of the lever (13) with two branches is mounted in the slot (19) of the fork (21) whose vertical branch (22) is connected to a spring (18) the other end of which is connected to the   vertical branch (14) of the lever (13) with two branches.   8, Device according to claim 1, character-   rised in that the colored segments (sectors) (48, 49,, 51) are fixed to the tube (45) at different angles, depending on the angles of rotation of the device weft feed (58).