HK1013201B - Device for the selective control of the oscillating transverse motion of a yarn, in particular the warp yarn of a loom - Google Patents

Description

Technical field

The invention relates to a device for selectively controlling the oscillating transverse movement of a yarn, in particular a chain thread of a weaving machine, as defined in claim 1.

State of the art

The devices of the type mentioned above are known on several occasions, for example, in the manufacture of patterned fabrics, for the selective control of the threads, shaft machines or jacquard machines are used, each thread being guided through the closed eye of a lintel and raised or lowered indirectly via the shafts of a shaft machine or the harness cord of a jacquard machine.

The disadvantage of this method of selecting and moving the individual threads is the considerable electronic and mechanical effort, which is expressed in the large space required by the shaft or jacquard machine next to or above the weaving machine and in high costs. The more individual threads are controlled, the more expensive the solution becomes. Another major disadvantage of existing specialized imaging devices, regardless of whether it is jacquard or shaft technology, is that all threads must be passed individually through the closed eyes of weblits.

US-A-5 261 464 describes a device that has open lintels in an up-and-down board. However, this device has several disadvantages. The design of the opening does not allow a thread to be connected and uncoupled during weaving, but only serves to retract the chain thread during the standstill of the weaving machine. Furthermore, the design of the guide elements allows only low thread densities.

Description of the invention

The purpose of the invention is to design a device of the type described at the outset in such a way that direct control of a thread is possible, the previously closed thread openings in ribbons are replaced, direct elements such as shaft or jacquard machine are omitted and the selection of a single thread, in particular a chain thread, is possible with significantly less space requirements.

This problem is solved in accordance with the invention by the characteristics of claim 1. The fact that the thread is carried by the thread carrier only if the actuator operates the controls in such a way that the thread is engaged with the relevant thread carrier and the thread is otherwise exposed, on the one hand, makes the insertion of the thread into the device considerably easier and, on the other hand, allows the thread to be individually controlled and carried in the simplest way, which significantly improves the control of the thread and thus, in the case of a weaving machine, the possibilities of sampling a fabric to be produced.

The device is suitable for a wide variety of applications, for example to provide a filament recording organ with a selection of filament filaments of different colours and qualities for detection.

The device has other significant advantages, especially in connection with a weaving machine. The integration of the selection mechanism into the board eliminates many complex mechanical elements for controlling and diverting chain threads, such as shaft machine, jacquard machine, harness. If the boards are arranged, for example, on the shafts of a weaving machine, they no longer need to be driven irregularly according to the weaving pattern but evenly, e.g. with sine wave motion, and can thus be designed much simpler and more robust, which reduces costs and increases operational reliability.

The device shall be designed in such a way that it is not possible to remove the device from the test chamber.

The device can be implemented in various ways: the operator can be fixed to the board, the actuator actuating the controls to supply the thread to the operator for carrying on the board if necessary. A preferred embodiment of this type is described in claim 2. A fundamentally different embodiment of the invention is to move the operator himself from a position in which no thread is carried on to a carrying position in which a thread is directed out by means of the board by means of the actuator.

The operator of a board may be effective in both directions of movement of the board. For this purpose, the operator may be forked, with the fork opening transversely to the direction of movement of the board. However, a training according to claim 5 is more advantageous, whereby the board itself may have a second operator effective in the other direction of movement or the operator required for the other direction of movement is located on another board. Various variants for the training and arrangement of the operator result. Thus, the operator may be hook-shaped or at least a notch to safely capture the thread. The decision is also advantageous, whereby the arrangement of the operator at the end of a bending thread can be made. The operator, for example, is turned by spraying either by mounting a thread or by mounting a thread on a specific form of the thread.

A design according to claim 9 is particularly advantageous, whereby the threads selected by the board are separated from other threads by means of a separation board. The latter can also limit the diversion of the control tongue or other movable control device. A particularly advantageous arrangement and formation of the board and the separation board is described in claim 10.

The actuator is electrically controllable according to claim 11 and can be made up of various components, e.g. a piezoelectric element, a magnetisable coil, a permanent magnet, a memory alloy, a bimetal and others. The electrical controllability of the actuator is essential. Particularly advantageous are actuators with low energy consumption, such as piezoelectric elements.

The board can be removed from the support and re-attached individually, e.g. for repair purposes. It is advantageous to bundle several boards into groups, both for control and for mounting, e.g. for the exchange of the boards. Boards and dividing boards are connected in the foot area by spacing pieces, which can have different thicknesses, so that their division corresponds to the desired thread density.

The design according to claim 16 is advantageous, whereby the upper ends of the plates are shaped or marked so that they are supported on the one hand at the correct distance, i.e. the distance corresponding to the division in the foot area, and on the other hand, that they are simultaneously distinguished from each other in order to be detected and selected manually and/or by an automatic thread-entry device.

The boards are conveniently connected to a known control device that controls a large number of boards, so that a specific web pattern can be woven. Such a control device contains a computer or can be connected to one and allows the input of a template (e.g. an image) e.g. by means of a scanner or CAD program and its implementation according to the boundary conditions of the weaving machine (wire density in chain and shot).

Brief description of the drawings

The following examples of embodiments of the invention are described in more detail by means of schematic drawings showing: Figure 1the web area of a weaver in a schematic layout, in side view;Figure 2a device for controlling the threads, in a horizontal line of sight, in the cut-off;Figure 3a terminal of the device in Figure 2;Figure 4a first board for controlling threads in a horizontal line of sight to the participants;Figure 5the board of Figure 4 in the V-V section of Figure 4 in a larger scale;Figure 6the board of Figure 4 in the vertical section, in the cut-off and in the larger scale;Figure 7multiple plates and cut-off plates grouped together in a socketed order, in a horizontal line of sight and in a horizontal line of sight to the participants;Figure 8 further plates in the horizontal line of sight to the participants;Figure 8 further plates in Figure 9X;Figure 8X;Figure 10X;Figure 10X;Figure 11 in the horizontal line of sight to the participants;Figure 10X;Figure 10X;Figure 11 in the horizontal line of sight to the participants;Figure 10X;Figure 10X;Figure 10X;Figure 11 in the horizontal line of sight to the participants;Figure 10X;Figure 10X;Figure 10X;Figure 10X;

Ways of carrying out the invention

Figure 1 describes a device for selectively controlling the oscillating transverse movement of a thread using the example of chain threads on a weaving machine.

Figure 1 shows a chain shaft 2 from which chain threads 4 are fed by means of plates 6,6a,6b, which are arranged on supports 8,8a,8b, which are moved up and down oscillating up and down from the rest position, i.e. the middle position 10 to form a web sheet 12 across the direction of movement. A web sheet 14 is used to attach a thread 15 inscribed in the web sheet 12 to a product edge. The fabric produced 18 is carried over a product tree 20. The plates 6,6a,6b contain 22 conductors, each connected from a base position in which thread picking takes place, no actuator and a controller in a controller in which a F-taking takes place.

Each board contains two conductors 22a,22b, each operating only in one direction of movement of the board 6 and diverting the string 4 from the middle position 10 to the surface 28 or the sub-sub-box 30 to form the webbox 12. However, it is also possible that each two plates 6a,6b, arranged on two carriers 8a,8b, serve to diverts a string 4 from the middle position 10. Thus, the board 6a can only diverts a string 4 to the surface 28 while the second board 6b moves the string 4 to a future web loop in sub-box 30. This allows the board to operate in double rhythm with half the frequency of the receiver on the web frequency.

The construction of weaving machines and the operation of the weaving machines trained as weavers are well known and reference is made to the documents cited at the outset, in particular EP-A-0 534 523.

Figures 2 to 6 show the formation and arrangement of the plates. Figure 2 shows how several plates 6 are arranged in a given division on a support 8 with a dividing plate 32 on each side of each board 6 whose spacing is determined by spacers such as spacers 34 arranged between the plates on the support 8.At the end point of the support 8 the plates 6 and 32 are fitted with additional spacers 38 formed, for example, by protrusions in the plating case. These spacers limit the spacing between the plates and also have conductive surfaces 39 for the passage of a thread. The spacers 32 serve, on the one hand, as a stop for experienced users 22a, 22b and, on the other, to separate chain threads 4a not to be processed on the respective board 6. The processing of a large number of threads can also be divided into different plating sets, as indicated by the plating sets I and II in Figure 1.This stacking of the plates on successive supporting planes increases the chain-wire density.

Figures 4 to 6 show details of the structure of a board used in Figures 1 to 3. The board has a case 42 made of two shells 42a,42b, with the shells 42a,42b welded together at the edges 44, for example. The case has a foot section 46 with two legs 48 that clamp the support 8 so that the board can be mounted and/or suspended on the support. The board can also be connected to the support in any other way, for example by screwing, gluing and the like.Between the foot part 46 and the head part 50, a pair of connectors 22a, 22b are placed on each side, each of which is active in both directions of the plate. The connectors are attached to the end of a control device, which is formed as a control element in the form of a control tongue 52 which, together with its other attachment part 54, is attached to a reinforcement layer 56 in the housing 42 by adhesive and/or pins 58.As soon as the actuator 60 is charged with current via the conductor 64, a bending of the control tongue 52 occurs, causing the hooked trained operator 22b, which is in the base position inside the housing 42 of the board, to be moved outwards into the carrying position through the opening 66 in the housing 42 as shown in Figures 2 and 6, and in this position to take a chain 4 with it when the board is raised or lowered.

The actuators 60 of the actuators 22a, 22b on either side of the board are connected via the conductors 64 to a circuit 68 which is, for example, an integrated circuit, called IC, and is also located within the board housing. The circuit is used, for example, to control and monitor the actuators 60. The circuit is connected via several conductors 70, for example, for power supply and/or data exchange, to contacts 72 in footnote 46. The contacts 72 are connected to further contacts 74 in the carrier 8, which in turn are connected via 26 to the external controller 24 which controls the board respectively the actuators 22a, the circuit board, so that the chain casings must be generated from the devices in the sense of the provisions of paragraph 4.

In contrast to the individual arrangement of the plates 6 and 32 on the carrier 8 as shown in Figure 2, Figure 7 shows how several such plates 6c and 32a are grouped together and cast into a common base 76 or otherwise fixed, such as glued together. The base 76 can then in turn be fixed to the carrier 8 in the manner described above. The plates 6c are in this example connected via lines 64a to a power supply common to all the boards of the group in the 68a circuit. The lines 70a to supply power and/or to supply power to the 68a circuit are parallel to the carrier 8 and the lines 70a to supply power and/or to supply power to the 70a circuit are parallel to the carrier 8 The data conductors can be connected in an optical way to transmit signals from the 70a to the 70a circuit. The data can be transmitted via a direct line to the 70a circuit and not directly connected to the 70a circuit.

Figures 8 and 9 show the cross-section of another board 6d, in which the controls are, for example, in the form of membrane 78 which may be part of the housing 82. The membranes 78 carry actuators 60a. The membranes 78 are moved in and out as required by means of the actuators 60a from a base position inside the housing 82 to a carrying position in which they protrude from the housing.

Figures 10 and 11 show another variant of a 6e board in the figure, where the controls are designed as distractors and have 84 distractor pins arranged in pairs on each side of the housing 86 and fitted with actuators 60b. The distractor pins cover in their foot area passenger 22d, which are fixed in housing 86 of the board 6e. In the carrying position, the free end 88a of a distractor 84a protrudes outwards in the movement of thread 4 and the free end 88b of the other internally attached distractor pins 84b points inwards and forms a slide track to guide the thread 4 inwards against the passenger 22d.

The Commission shall adopt implementing acts laying down the rules for the application of this Regulation.

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Claims (16)

1. A device for selectively controlling the oscillating transverse movements of yarns (4, 4a), in particular a warp yarn of a loom, with at least one sinker (6, 6a, 6b, 6c, 6d, 6e) driven in an oscillating manner with at least one carrier (22, 22a, 22b, 22c, 22d) for the yarns (4, 4a) characterized in that control means (52, 52a, 52b, 78, 84a, 84b) operated by means of an actuator (60, 60a, 60b) are provided in order to engage the yarn with the carrier.
2. Device according to claim 1 characterized in that the control means is formed as deflection means, preferably a deflection tongue (84a, 84b), which is moved in an oscillating manner by means of the actuator (60d) between an initial position in which a yarn (4) is not picked up and a pick-up position, in which a yarn deflection by a carrier (22e) connected to the sinker (6e) is produced. (FIGS. 10 and 11)
3. Device according to claim 1 or 2 characterized in that the control means is formed as a control element, preferably a control tongue (52, 52a, 52b), which supports the carrier (22a, 22b) and is movable by means of the actuator (60) between an initial position in which there is no yarn pick-up and a pick-up position for picking up a yarn. (FIGS. 2, 4 and 6)
4. Device according to claim 3 characterizing that the control element is formed as membrane (78) which can be part of the housing (82) and which supports the carrier (22c) (FIGS. 8 and 9).
5. Device according to any one of claims 1 to 4 characterized in that the carrier (22, 22a, 22c, 22d) is operable in only one direction of movement of the sinker (6, 6a, 6b, 6c, 6d, 6e) and the sinker has one additional carrier (22b) operable in the other direction of movement.
6. Device according to any one of claims 2 to 4 characterized in that the control element has regions of various stiffness whereby, for example, a first region located in the base of the control element is preferably more flexible than a second region associated with the carrier.
7. Device according to any one of claims 1 to 6 characterized in that have a separating sinker (32, 32a) is located on the side of the sinkers (6, 6a, 6b, 6c, 6d, 6e) bearing the carriers (22, 22a, 22b, 22c, 22d) and the control means (52, 52a, 52b, 78, 84a, 84b) rests against the separating sinker in the pick-up position.
8. Device according to claim 7 characterized in that spacers (34,38) are arranged between the sinkers (6, 6a, 6b, 6c, 6d, 6e) and the separating sinkers (32, 32a) whereby preferably an upper spacer (38) forms a guide surface (39) making possible the passage of a yarn (4).
9. Device according to any one of claims 1 to 8 further characterized by a plurality of separate sinkers (6, 6a, 6b, 6c, 6d, 6e) for one or more yarns (4, 4a) are arranged on one support (8, 8a, 8b) or on a plurality of supports whereby separating sinkers (32, 32a) can be arranged between adjacent sinkers.
10. Device according to any one of claims 1 to 9 characterized in that the sinkers (6, 6a, 6b, 6c, 6d, 6e) and the separating sinkers (32,32a) are interchangeably arranged individually or collectively in groups on a pedestal (76) on the support (8).
11. Device according to any one of claims 1 to 10 characterized in that the actuator (60, 60a, 60b) is electrically controllable and preferably is controllable with a separate control device (24).
12. Device according to any one of claims 1 to 11 characterized in that the sinkers (6, 6a, 6b, 6c, 6d, 6e) include at least one partially conductive pad (62) for control of the actuator (60, 60a, 60b) and/or supervision of the condition of the sinker.
13. Device according to any one of claims 1 to 12 characterized in that it contains a circuit (68, 68a) for each individual sinker (6, 6a, 6b, 6c, 6d, 6e) or a group of sinkers for controlling and/or regulating and/or supervision.
14. Device according to any one of claims 11 to 13 characterized in that the sinker (6, 6c) has a foot portion (46) or a pedestal (76) which includes a contact portion (72, 72a) for connection to a control conductor (26).
15. Device according to any one of claims 1 to 14 characterized in that the sinker (6, 6c) and/or a pedestal (76) connected therewith and/or a support (8) for the sinker (6) or the pedestal (76) includes or include an electro-optical apparatus (70, 70a, 72, 72a, 77) for data transfer.
16. Device according to any one of claims 1 to 15 characterized in that the upper ends of the sinker (6, 6a, 6b, 6c, 6d, 6e) are so formed that they are distinguishable from each of the adjacent sinkers, for example, on the basis of their geometry and/or optical elements such as light diodes.