FI79354B - STYRING RELEASE FOR SCREWING AND HANDLING. - Google Patents

Description

1 79354

Kangaspuiden warp yarn control equipment -Styrinrättning för varpträdar i handvävstolar

The invention relates to a control device for warp yarns for looms, which is set out in the preamble of claim 1.

In these prior art control devices 5, the upper warp arm and the lower anise arm corresponding to certain warp yarns are caused to move in one direction, e.g., to form a spiral in which predetermined warp yarns move apart from stationary warp yarns to take the shuttle 10 therebetween. The warp yarns that rise in each case can be selected according to a predetermined formula, either using different calves or this can also be automated, and recently microcomputer systems have been created in which different programs can be used and the warp yarns are selected automatically each time.

A common problem with the aforementioned looms has been poor stitching, as the warp yarns move only 20 in one direction and a single cord that is too loose or too tight at some point in the control and transmission hardware causes the stitching to become flat, resulting in shuttle penetration problems. The counterweights, which hold the warp yarns down for half to 25, make the pedaling heavy.

The invention provides a decisive improvement in the above drawbacks. To achieve this, the invention is mainly characterized by what is set forth in the characterizing part of claim 1.

2 79354

The basic idea of the invention is to provide a guide piece in the loom, the steering movement of which in one direction to form a wire by means of cords connected to the guide piece and pairs of ropes connected to them takes place so that only one of the ropes of the pair of ropes connected to its own pair of ropes takes place. a parallel movement in which the warp yarn corresponding to the pair of cords either rises or falls down 10 depending on whether it is a cord raising the upper rivet arm or a rope lowering the lower ridge arm of the same pair of rope arms. In this way, a much better warp is obtained, since the second warp yarns rise as the others descend and it is not necessary to use a greater force than before to form the warp 15. The apparatus further comprises a programming device, such as, for example, a microcomputer, which selects the cords of the pairs of cords which are actuated by the guide piece before the new guide movement of the guide piece 20 to form the stent.

Preferred embodiments of the invention are further apparent from the appended subclaims. The cords can be secured to the guide member via locking members 25 that lock and unlock the guide member, with one pair of strings of each pair of rivets being locked to the guide member while the other is unlocked, the latter not causing movement of the cord attached thereto as the guide member moves. The guide piece is preferably placed in the lower part of the looms in functional connection with the pole, whereby the traditional appearance of the looms can be preserved and at the same time the guide piece can be placed in a place where it can fit well.

Il 3 79354

The invention will now be described in more detail with reference to the accompanying drawings, in which Figure 1 shows a control device according to the invention seen from the direction of the warp support, Figure 2 shows the control device in its wiring position as seen from the side and Figure 3 shows the operating principle of a control device according to the invention.

Figure 1 shows a warp yarn guide apparatus 10, in which the warp yarns are guided by the upper hinge arms 1 and the lower hinge arms 2 known per se, whereby one upper hoop arm and one lower hinge arm are formed in pairs by connecting vertical threads 16 connected to their own warp threads. In the equipment shown in the figure, the warp yarns are divided into six groups of warp yarns, of which yarns belonging to the same group are marked with the same letter. Each group of warp yarns is represented by its own pair of warp arms 1, 2 and in this application the numbering of the different parts 20 is performed so that the part reference number is followed by the letter to which the part of the warp yarn in question has a functional connection.

The upper anvil arms 1 are raised by pulling the cords 4 down to 25, whereby the levers 3 at the top of the looms turn and lift the nipple arm 1 by means of the cords at their ends, whereby the warp yarns corresponding to this nipple pair rise. Correspondingly, the lower anise arms 2 are lowered by pulling the string 30 downwards, to which the lower anise arms 2 4 79354 are directly attached, and then the lower anise arms 2 lower the warp yarns connected to the respective pair of arms.

An arm 13, 5 is hinged to the frame of the lower part of the looms, to the end of which a guide piece 6 is attached. The guide piece is further connected to the pedal 11 at the lower part of the looms by a tension-transmitting member such as a rope 17. A return spring 14 is arranged at the articulation point of the arm, which returns the arm and at the same time the guide piece 6 to the upper position, whereby at the same time the pedal rises via the rope 17.

The guide piece 6 is a housing-shaped body and comprises vertically through holes 9, 10 through the body, in which elongate rods 7, 8 are arranged. At the upper end of each rod there is its own cord, either a cord 5 connected to the lower anise arm 2 or an upper 20 cord connected to the upper arm 1 4. The bars are grouped in pairs so that a certain pair of rod arms 1, 2 always corresponds to a certain pair of rods 7, 8, of which one rod 7 is attached to a cord 4 connected to the upper anise arm and the other rod 8 is attached to a cord 5 connected to the lower anise arm.

The fastening bars 7, 8 are arranged in two rows so that the bars 7, 8 of the same pair of bars are always next to each other. In the upper position of the guide piece 6 (Fig. 1), all the bars are in the same position so that they 30 are depressed in their lowest position relative to the holes.

In this position, one of the rods of the pair of rods, either 7 or 8, is locked to the fastener 5 79354 by a member inside the housing, in this case a magnet 18, and each pair of rods has its own member for this purpose. One of the rods of the pair of rods is then left free and it follows that when the guide piece 6 is moved downwards by means of the pedal, one of the rods of the pair of rods, i.e. those locked, descends with the guide piece and the unlocked rods of the rod pair are free to move. however, they remain at the same time in good contact with the guide member as the free rods move in their longitudinal direction, each surrounded by their own hole, while the guide member is depressed downwards. In this case, the pair of cords 15 connected to each pair of rope arms operates in such a way that the second rope, 4 or 5, moves downwards with the locked fastening piece, 7 or 8, respectively, and pulls the respective pair of rope arms either up or down, depending on which rope the locking piece is attached. One of the arms of the pair of rivet arms: it is then possible to move freely with the movement of the arm affected by the locked fastening piece, because the free-moving arm in the pair of rivet arms communicates with this pair of fastening members of the pair of fasteners. The rods must then be arranged long enough for all the fastening rods to remain in contact with the guide piece 6.

Figure 3 shows the guide member 6 in more detail in a depressed position, the free fastening rods showing a recess 19 near their upper end inside the guide member 6 79354 in the initial position, whereby the corresponding locking member 18 can hit it and lock it immovably in its longitudinal direction. Thus, when the guide piece is depressed to its lowest position, a warp is created in which the warp yarns 5 in contact with the pairs of nipples with the upper fastening arm 7 of the upper nipple arm 1 locked upwards, and the warp yarns to which the mating arm 8 is connected locked, the las-10 swing down, creating a good, flat pattern in which some warp yarns have risen and others have descended from their normal plane, denoted by the letter L in Figure 2.

When the pedal is released, it rises to the upper position due to the return spring 15 of the arm 13, and the free fixing rods return to the same position as the locked rods. At this point, the rising and falling warp yarns are reselected according to the desired weave pattern, and this is done in practice 20 so that if a previously raised warp yarn group, e.g. a desired descending this time, the locking member 18 moves out of the grip with the upper fastener 1a with the fastening member 8a acting on the alanine arm 2a and this exchange is illustrated by an arrow R in Figure 3. In practice, this re-locking is performed electronically, the control body 6 having windings acting on the locking magnets and the control signals being given by the control unit indicated in Figure 1. by reference numeral 12 and which in this case may be, for example, a microcomputer on which a certain weaving pattern has been programmed in advance. Figure 1 also shows a switch 15, 7 79354 arranged on the pivot arm 13 of the guide piece 6, articulated at the articulation point and arranged to inform the unit 12 when the pivot arm rises to the upper position, which causes a new locking function and at the same time new warp threads in the guide piece. 6 before the next control movement.

The invention is well suited for use in already existing looms, and the guide piece can easily be placed in already existing looms, e.g. as described above, in the lower part of the looms near the pedal, where there is suitable space for it.

However, the invention is not limited only to the embodiment described above, but e.g. the functions of the guide piece can be well modified within the scope of the invention, and e.g. mechanical solutions other than the elongate fastening rods shown are then possible.

Claims (6)

8,795,354 Claims; 1. A control apparatus for warp yarns of looms, comprising a plurality of pairs of twine arms (1a, 2a, Ib, 2b ...) and members (3, 4, 5, 6) for moving the pairs of arms and the associated warp yarns (a, b, c ...) - 5 with respect to each other to form a pulley, characterized in that said means comprise a guide body (6) connected in individual pairs of rivet arms (1a, 2a; Ib, 2b; ...) to the upper ridge arm (1a; Ib; ...) of its own. via a cord (4a; 4b; ...) 10 and via the own cord (5a; 5b ...) of the lower anise arm (2a; 2b; ...) so that the steering movement of the guide body in one direction causes the other (4a or 5a); 4b or 5b; ...) in the cords of a pair of cords-15 (4a, 5a; 4b, 5b; ...) connected to their own pair of twine arms (1a, 2a; Ib, 2b; ...) a, b) for raising or lowering a pair of cords as the second cord (5a or 4a; 5b or 4b) passively moves in a different direction, the apparatus further comprising a programming device 20 en (12) for selecting the strings to be actuated before the steering movement of the guide piece (6). Control device according to Claim 1, characterized in that the guide piece comprises, for each pair of cords (4a, 5a; 4b; 5b; ...) corresponding to each pair of rivets, its own pair of fasteners (7a, 8a; 7b, 8b; ...), in which in pairs, one fastening piece (7a; 7b; ...) is attached to the cord (4a; 4b; ...) connected to the upper anisle arm and the second attachment piece (8a; 8b; ...) to the cord connected to the lower anise arm (30); 5a; 5b; ...), wherein in said pair, alternatively, the second fastening piece is lockable to the guide piece to provide a corresponding guide movement of the cord while the second fastening piece remains free. Il 9 79354 Control device according to Claim 2, characterized in that the guide body (6) has holes or the like (9a, 10a; 9b, 10b; ...) / in which 5 elongate bars (7a, 8a; 7b, 8b) acting as fastening elements are arranged. ;)), to the end of which corresponding cords are attached and which form said pairs of fasteners, in which, when the second rod is locked to the guide piece, the second rod can slide freely in its own 10 holes during the guide movement of the guide piece. Steering device according to one of the preceding claims, characterized in that the guide piece (6) is connected to a pedal (11) located in the lower part of the looms for movement with its movement. Apparatus according to claim 4, characterized in that the guide piece (6) is attached to an articulated arm (13) at the bottom of the frame of the loom, which is arranged to pivot vertically by the movement of the pedal (11) when the arm further handles the return spring guide member (14). 6) to return to the initial position for a new steering movement. Device according to claim 5, characterized in that the pivot arm (13) is arranged to act on a switch (15) arranged to inform the programming device (12) of the end of the control movement of the control piece (6) to select new cords before the next control movement. 10 79354