EP0565958B1 - Split loom - Google Patents

Description

The invention relates to a divided weaving machine with a stationary machine part which contains a shaft drive, and with a removable machine part which contains a warp beam bearing and holders for heald frames which are detachable from the shaft drive and which can be taken along with the removable machine part.

In a weaving machine of the type mentioned at the beginning (CH 668 608 A5), the shaft guides are part of the removable machine part. It is not disclosed how the heald frames are held in the shaft guides after they have been released from the shaft drive.

The invention has for its object to provide a loom of the type mentioned in such a way that the separation of the heald frames from the shaft drive and the reconnection to the shaft drive can be carried out easily.

This object is achieved in that driving means for holding elements attached to the heald frames can be attached to the removable machine part, by means of which the heald frames are held in predetermined positions on the removable machine part.

Because of the design according to the invention, it is possible to hold and fix the heald frames in predetermined height positions, so that there is a relief of force between the heald frames and the shaft drive. This makes it possible to easily separate the shaft drive from the heald frames and to reconnect them to the heald frames. In addition, it is possible to hold the heald frames in different height positions, which means that cross tubes (which may be required to automatically attach the warp threads) and / or pull the attached warp threads of a new warp beam by automatically threading the warp threads into them Eyes of the strands is relieved.

In a further embodiment of the invention it is provided that the holding elements are attached to the frames of the heald frames outside the area of healds. As a result, it is not necessary to move the strands within the frames of the heald frames, as is known for an attack by a hoist for heald frame packages (CH 661 065 A5). According to the invention, the holding elements and the driving means do not hinder automatic threading of the warp threads into the eyes of the strands.

In a further embodiment of the invention it is provided that at least two different entrainment means are provided, each of which is assigned to a plurality of heald frames and which can be adjusted to different heights.

Fig. 1

zeigt eine erfindungsgemäße Webmaschine während des Zusammenfügens der beiden Webmaschinenteile oder während des Entfernens des entfernbaren Webmaschinenteils,

Fig. 2

die Webmaschine nach Fig. 1 in zusammengefügtem Zustand,

Fig. 3

eine Teilansicht in Richtung des Pfeiles F3 der Fig. 2,

Fig. 4

eine Draufsicht entsprechend des Pfeiles F4 der Fig. 3,

Fig. 5 bis 7

Ansichten eines Teils einer Webmaschine mit unterschiedlichen Positionen der Webschäfte,

Fig. 8

eine Draufsicht in Richtung des Pfeiles F8 auf die Teilansicht der Fig. 6,

Fig. 9

eine Teilansicht einer weiteren erfindungsgemäßen Ausführungsform und

Fig. 10

eine Draufsicht in Richtung des Pfeiles F10 der Fig. 9.

Further features and advantages of the invention result from the following description of the exemplary embodiments shown in the drawing and the subclaims.

Fig. 1

shows a weaving machine according to the invention while the two weaving machine parts are being joined together or during the removal of the removable weaving machine part,

Fig. 2

1 in the assembled state,

Fig. 3

2 shows a partial view in the direction of arrow F3 in FIG. 2,

Fig. 4

3 shows a plan view corresponding to the arrow F4 in FIG. 3,

5 to 7

Views of part of a loom with different positions of the heald frames,

Fig. 8

6 shows a plan view in the direction of arrow F8 on the partial view of FIG. 6,

Fig. 9

a partial view of another embodiment of the invention and

Fig. 10

a plan view in the direction of arrow F10 of FIG. 9th

1 and 2, a two-part weaving machine (1) is shown, which has a stationary machine part (2) and a removable machine part (3).

The stationary weaving machine part contains, among other things, a not shown weaving drive system, a not shown cloth winding system, a not shown warp beam drive and a schematically indicated shaft drive (4). This machine part (2) has two plate-shaped side parts which are connected to one another by cross struts (16).

The removable machine part (3) contains a warp beam bearing (8) for a warp beam (7) as well as the heald frames (5) and a reed (6) that can be detached from its drive and placed on a holder. The removable machine part (3) further includes a warp stop (10) and a match tree (11), which are carried by holding arms (9), which are adjustable in height two plate-shaped side parts formed machine part (3) are attached. The match tree (11) is mounted on a rocker (12) which is supported by spring elements (13). The warp threads (45) are pulled off the warp beam (7) and placed over the match beam (11) and passed through the warp thread monitor (10) as well as the heald frames (5) and the reed (6).

Between the side parts of the stationary machine part (2) and the removable machine part (3), guide elements (15) are provided, which determine the beginning of the movement with which the removable part (3) is moved away from the stationary machine part (3) and the end enable the joining movement only on a predetermined movement path.

The shaft guides (14) are attached to arms (22) of the removable machine part (3).

In order to hold the heald frames (5) in predetermined height positions, in particular when loosening and also reconnecting the couplings (17) to the shaft drive, the two side parts of the removable machine part (3) are provided with driving devices (18) or driving means which are based on 3 and 4 are explained in detail. These entrainment devices (18) are attached before the removable machine part (3) is removed and are dismantled again after the removable machine part (3) and the stationary machine part (2) have been joined together.

The heald frames (5) each have a frame formed from side profiles (19) and transverse profiles (20), which surrounds the area of the strands (29) provided with eyes (30). In the exemplary embodiment according to FIGS. 1 to 4, the frame of the heald frames (5) are provided at the upper ends of the side profiles (19) as holding elements (28) which project outward protruding stops. Driving elements (21) are assigned to these holding elements (28), which hold the heald frames (5) when they are no longer held by the shaft drive (4).

Driving elements in the form of L-shaped strips (21) are attached to the arms (22) of the side parts of the removable machine part (3). These strips (21) extend with one leg in the direction of the goods as far as the area of the holding elements (28) of the heald frames (5). The transverse leg of these driving elements (21) is guided on a support (23) by means of a bore (24). These supports (23) are inserted or screwed into bores in the arms (22) of the side parts of the machine part (3). The supports (23) are provided with latching means (25) with which the driving elements (21) can be fixed in a predetermined height position. Cross bores (27) of the supports (23) and pins (26) which can be inserted therein serve as locking means (25). As shown in Fig. 3, the shaft guides (14) are adjustable in the transverse direction (arrow direction B), as is known, for example, from US Pat. No. 3,888,284. With this transverse adjustment, the couplings (17) between the shaft drive (4) and the heald frames (5) can be released and brought back into engagement. The coupling elements (31) of the shaft drive and the associated coupling elements (32) of the heald frames are shown schematically in FIG.

In order to remove the removable loom part (3), the heald frames (5) are first brought to approximately the same height by means of the shaft drive. Then the shaft guides (14) are moved sideways together with the heald frames (arrow direction B) until the coupling elements (32) are disengaged from the coupling elements (31), but still rest on the coupling elements (31). Then the entrainment devices (18) are attached to both arms (22) in such a way that the entrainment elements (21) are located under the holding elements (28). Then the driving elements are lifted upwards in the direction of the side profiles (19) (arrow direction A) until the state shown in Fig. 3 is reached, in which the driving elements (21) touch the holding elements (28). The pins (26) are then inserted into a bore (27) in the support (23). The removable weaving machine part (3) can then be removed.

After the removable machine part (3) has been installed again, the pins (26) are removed. The driving elements (21) are moved down along the side profiles (19) until the coupling elements (32) rest on the coupling elements (31) of the shaft drive (4). The entrainment devices (18) are then removed. The shaft guides (14) with the heald frames (5) are then moved sideways in the direction of the arrow (B) in order to bring the coupling elements (31, 32) into engagement with one another.

From the above description it is clear that it is possible to accommodate the heald frames (5), even if not all heald frames (5) are at the same height. It is not necessary that the heald frames (5) are all brought to the same height before the driving means are attached. The driving elements (21) do not necessarily have to touch all the holding elements (28) of the individual heald frames before the removable machine part (3) is removed. However, you must touch them at the end of the vertical expansion movement prescribed by the guide means (15).

The embodiment according to FIGS. 5 to 8 first differs from the embodiment according to FIGS. 1 to 4 in that the driving elements (21) are held in a continuously adjustable manner by means of supports (35). In the exemplary embodiment, the supports are provided with a screw (34) which engages in a thread of the driving elements (21). In a modified embodiment it is provided that the infinitely variable drive takes place via a pneumatic cylinder or via an electric motor.

The supports (35) are provided in the region of their upper ends (36) with a longitudinal groove (37) into which a further driving element (33) can be inserted, which is designed as a comb-like strip (38) shown in FIG. 8. The strip (38) is provided with prongs (39) which are assigned, for example, to the holding elements (28) of every second heald frame (5).

When the removable machine part is removed, in the exemplary embodiment according to FIGS. 5 to 8 the driving elements (21) are first attached, after which after loosening the connections of the heald frames to the shaft drive, the driving elements (21) are lifted upwards by means of the screws (34), until they at least touch the holding elements (28) or raise the heald frames (5) on the holding elements (28). The removable machine part can be removed in this position.

To attach cross tubes or the like. To enable different groups of warp threads to be formed with the help of the driving elements (21) and the further driving elements (33). First, the driving element (21) is raised until the holding elements (28) of the heald frames are above the groove (37) of the supports (35). The bar (38) is then inserted into the groove (37) in such a way that the tines (39) are located below the holding elements (28) of every second heald frame (5). Then the driving elements (21) are moved down again. Some of the heald frames (5) with the holding elements (28) lie on the prongs (39) of the bar (38), while the other heald frames (5) with their holding elements remain on the driving elements (21) and are lowered by them become. After inserting a cross tube or the like. the driving elements (21) can be raised again until all the holding elements (28) are taken again and are located above the groove (37). The bar (38) can then be moved such that the tines (39) are located below the holding elements (28) of the previously lowered heald frames. The driver elements (21) down again lowered, so again form two warp thread sheets, between which another cross tube or the like. can be introduced. It is sometimes necessary to attach cross tubes to automatically link warp threads to the warp threads of a new warp beam.

In the embodiment according to FIGS. 9 and 10, the heald frames (5) are driven via cables (42), each of which is provided with a coupling element (41) into which a hook-shaped coupling element (40) engages, which on the side profiles (19 ) the frame of the heald frames (5) is fastened and protrudes above them. The coupling elements (40) each consist of two side plates (43). Between the two side plates (43) there is a bolt as a holding element (28 ') with which the driving means (18) cooperate. The entrainment means (18) essentially correspond to those of the exemplary embodiment according to FIGS. 1 to 4. The entrainment elements (21 ') are also designed as L-shaped strips, the legs of which are comb-like in the direction of travel of the goods, each with a prong (44) extends into the area of the holding elements (28 '). In a modified embodiment, the tines (44) are hook-shaped. Since these tines (44) engage between the plates (43) of the hook-shaped coupling elements (40), they keep the heald frames (5) at a defined distance from one another.

When the removable machine part is removed, the driving means (18) are attached to the arms (22) of the side parts of the machine frame, so that the prongs (44) receive the holding elements (28 '). The coupling elements (41) are each pivoted to the side beforehand, so that they assume the position shown in broken lines in FIG. 9. In order then to be able to remove the removable machine part, the shaft guides (14) are returned to the side in a known manner to the extent that they release the cables (42). Then the removable machine part can be removed.

In a modified embodiment, which corresponds in principle to the embodiment according to FIGS. 9 and 10, it is provided that the shaft guides (14) are attached to the stationary machine part (2) (FIGS. 1 and 2). In this case, the heald frames are taken along with the removable machine part. This is easily possible in the embodiment according to FIGS. 9 and 10 because the tines (44) of the strips (21 ') hold the individual heald frames (5) in such a way that their distance from one another is maintained.

Claims (9)

1. A split weaving machine (1) with one stationary part (2) which contains a shaft drive unit (4) and one detachable part (3) which contains a warp beam bearing (8) and holding devices for heald shafts (5) which can be separated from the shaft drive unit (4) and entrained by the detachable part, characterised in that entraining means (18) for holding elements (28, 28') fitted to the heald shafts (5) can be fitted to the detachable part of the machine (3, 22) by means of which the heald shafts are held on the detachable part of the machine in predetermined positions.
2. A weaving machine according to Claim , characterised in that the holding elements (28, 28') are fitted to heald shaft frames (19, 20) outside the area of the healds (29).
3. A weaving machine according to Claim 1 or 2, characterised in that the entraining means (21, 21') are height-adjustable and can be fixed.
4. A weaving machine according to one of Claims 1 to 3, characterised in that the entraining means (21, 21') take the form of L-shaped strips which extend in the direction of movement of the fabric by means of one leg which can be engaged with the holding elements (28, 28') on the heald shafts (5) and which can be mounted on the lateral section (22) of the detachable part of the machine (3) with the other leg.
5. A weaving machine according to Claim 4, characterised in that the strips (21, 21') are height-adjustable and can be fixed in at least one predetermined position with at least one support (23, 25).
6. A weaving machine according to one of Claims 1 to 5, characterised in that fitted to the detachable part (3) of the machine are shaft guides (14) in which the heald shafts (5) remain when this part of the machine (3) is detached from the stationary part (2) of the machine.
7. A weaving machine according to one of Claims 1 to 5, characterised in that the holding elements (28') and/or the entraining means (21', 44) are designed in such a way that they hold the heald shafts at a predetermined distance from each other.
8. A weaving machine according to one of Claims 1 to 7, characterised in that at least two different entraining means (21, 33) are provided, each of which is paired with several heald shafts (5), at least one of which can be adjusted to various heights.
9. A weaving machine according to Claim 8, characterised in that one entraining means is designed in the form of a comb-like, indented strip (38), the teeth (39) of which are matched to a predetermined group of heald shafts (5) and which can be mounted on the detachable part (22, 35, 36) of the machine at a predetermined height.

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