Fastening for a temple in a weaving machine

Abstract: Fastening for a temple in a weaving machine, particularly for a temple (11) of the type which is meant to hold the fabric edge (3) of a fabric (2), characterized in that the fastening consists essentially of a first support (23) at the height of the fabric edge (3),whereby the temple (11) is mounted in this first support (23) such that it can rotate freely, and whereby this first support (23) is integrated into the end guide (35) of the temple (11); and a second support (24) near the top (25) of the temple (11); and at the height of the second support (24) means (26) which clamp the temple (11) in relation to the second support (24).

Description: This invention concerns a fastening for a temple in a weaving machine. It is known that most fabrics during their manufacture tend to contract crosswise. However, in order to insert new weft threads correctly in the shed, it is necessary that the fabric is stretched crosswise at the stop line, which in practice is done by means of temples. In practice two types of temples are essentially used. On the one hand two temples with a limited length can be used which exert a traction on the edges of both sides of the fabric. On the other hand it is also known to use one temple which stretches over the entire width of the fabric. The present invention concerns a fastening for a temple of the first type. The temples of the first type mentioned above are usually fastened by means of two supports. According to a first known possibility one end of the temple is screwed to a support situated next to the fabric edge by means of a nut, and the other end, above the fabric, is hung on a support. This embodiment has the disadvantage that at the height of the fabric edge there remains little space for mounting a weft cutter, waste cutter or any other part, on the one hand because the support is situated next to the fabric edge, and on the other hand because this space is occupied by the bolt end of the temple and the nut screwed on it. A temple of this type is disclosed in GB-A-5206. According to a second known possibility the temple is supported on the one hand in the middle, and on the other hand near the end pointing away from the fabric edge. This has the advantage that at the height of the fabric edge there are no supports or similar, which for example is required in case the weaving machine is provided with a tucking-in device which must be able to cooperate in conjunction with the edge of the fabric. However, such a temple has the disadvantage that it provides two stretching zones, as a result of which, in the case of sensitive fabrics, a line may be formed in the fabric according to the warp sense at the height of transition between a stretching zone and a zone without stretching. The present invention concerns a fastening for a temple in a weaving machine, whereby none of the disadvantages mentioned above occurs. To this end it concerns a fastening for a temple in a weaving machine, particularly for a temple of the type meant to hold the edge of a fabric, characterized in that the fastening essentially consists of a first support at the height of the fabric edge, whereby the temple is mounted in this first support such that it can rotate freely in respect to said first support, and whereby this first support is built into or integrated in the end guide of the temple; a second support near the tip of the temple, and at the second support means to clamp the temple in relation to the second support. In order to better explain the characteristics of the invention, by way of example only and without being limitative in any way, the following preferred embodiments are described with reference to the accompanying drawings, where: figs. 1 and 2 show schematic representations of fastenings for a temple which are known from the state of the art; fig. 3 shows a weaving machine in which the invention is applied; fig. 4 shows a view of the part indicated in fig. 3 by F4, to a greater scale; fig. 5 shows a view according to arrow F5 in fig. 4; fig. 6 shows a cross-section according to line VI-VI in fig. 4; fig. 7 shows a view according to arrow F7 in fig. 4, partly in cross-section; fig. 8 shows a cross-section of the part indicated in fig. 7 by F8; fig. 9 shows the part indicated in fig. 8 by F9, dismantled; fig. 10 shows a cross-section according to line X-X in fig. 7; fig. 11 shows a cross-section according to line XI-XI in fig. 9; figs. 12 and 13 show cross-sections according to lines XII-XII and XIII-XIII in fig. 7; fig. 14 shows a schematic view for a variant, corresponding to the view according to fig. 5; fig. 15 shows a variant of the part indicated in fig. 7 by F15; figs. 16 and 17 show cross-sections, respectively according to lines XVI-XVI and XVII-XVII in fig. 4; fig. 18 shows a cross-section according to line XVIII-XVIII in fig. 17; fig. 19 shows a cross-section according to line XIX-XIX in fig. 4; fig. 20 shows a cross-section according to line XX-XX in fig. 19. Figure 1 shows an embodiment, belonging to the state of the art, to fasten a temple 1 above a fabric 2. Hereby the temple 1 is hung, on the one hand, on a support 4 situated next to fabric edge 3, whereby the temple 1 is fastened to this support 4 by means of a screw thread end 6 which is formed on the temple shaft 5 and upon which a nut 7 is screwed, and on the other hand on a support 8 which is situated at the height of the top 9. It is clear that the support 4, the screw thread end 6 and the nut 7 impede the mounting of a weft cutter or other weaving machine parts next to the fabric edge 3. Figure 2 shows a known embodiment which does not have the disadvantage of the embodiment of fig. 1, to which end the support 4 is replaced by a support 10 which is situated in the middle of the temple 1. However, this solution has the disadvantage that two stretching zones A and B are created, which in the case of sensitive fabrics may lead to the formation of fabric lines at the height of the support 10 in the fabric 2, according to the warp sense. The present invention concerns a fastening which does not have any of the disadvantages mentioned above. Figure 3 situates the invention in the weaving machine. The invention hereby concerns a fastening for temples 11 of the type which exerts a traction on the fabric edges 3 of the fabric 2. It is known that, as shown in figs. 4 and 5, such temples 11 have a cylindrical form, whereby a number, for example twenty rings 12 are sunk into the mantle surface, and whereby these rings are usually provided with needles 13 at their outer surface. As indicated in fig. 6 the fabric 2 is guided over a gutter-shaped fabric guide 15 at a short distance of the stop line 14, whereby it is pressed, at the height of the temples 11, into the gutter-shape by these temples 11. The above-mentioned rings 12 are mounted such that, on the one hand, they can make an eccentric movement in relation to the actual mantle of the temple 11, such that the needles 13 are presented either more or less further from the temple 11 as a function of the place on the outline, and on the other hand the rings 12 are aslant in relation to the plane of the fabric 2. As a result, the above-mentioned needles 13 mesh into the fabric 2 when it passes underneath the temple 11 and the rings 12 rotate along by the movement of the fabric 2, which in turn results in the needles 12 exerting a sideways traction on the fabric 2. By setting the temple 11 under another angle, the mesh of the needles 13 can be changed, an action executed by the weaver as a function of the fabric to be produced. By way of illustration, in figs. 4 and/or 5 a number of other components are indicated, such as the warp threads 16, the weft threads 17, the weft cutter 18 and the frame 19 of the weaving machine. In case catch cords 20 are used to hold newly inserted weft threads 17 at an end, the formed waste ribbon 21 of the fabric 2 is cut by means of a waste cutter 22. The present invention is special in that the fastening of the temple 11 concerned is essentially formed by a first support 23 at the height of the fabric edge 3, whereby the temple 11 is mounted such in this first support 23 that it can rotate; a second support 24 near the tip 25 of the temple 11; and at the height of the second support 24 means 26 which clamp the temple 11 in relation to this second support 24. The supports 23 and 24 are connected with the frame 19 of the weaving machine, for example by means of a number of supporting means 27 which are further specified below. As indicated in figs. 7 and 8 the temple 11 has a temple shaft 28 which acts as pivot for a number of ring-shaped guides 29 over which the rings 12 mentioned above can be rotated. The guides 29 are aslant in relation to the axial shaft 30 of the temple 11 and each have a part 31 with a large diameter, which is meant to separate the rings 12 sideways from each other, and a part 32 with a smaller diameter over which the rings 12 can rotate rather freely. According to the present invention the temple 11 is mounted such in the first support 23 that it can rotate freely. To this end the temple shaft 28 has a smooth shaft part 33 which fits into a bore 34 in the above-mentioned support 23, whereby the end of this shaft part 33 is almost level with the outside of the first support 23 or is situated within this first support 23. Preferably, the first support 23 is integrated into the end guide 35 of the temple 11, such that the first support 23 reaches a little or not at all outside the fabric edge 3, such that next to the first support 23 space remains available to mount possible other weaving machine parts next to the fabric edge 3. In order for the first support 23 to be integrated into the end guide 35, the latter is preferably made in one piece with the temple shaft 28 and may to this end, as indicated in fig, 8, be attached to it by means of one or more weldings 36. This allows the other guides 29 to be tightened against the end guide 35 by means of a nut 37 which can rotate over the screw thread 38 applied to the temple shaft 28. In front of the nut 37 a lock block 39 is applied which is provided with at least one radial recess 40, in which a tool can be applied to turn the temple 11. The recess 40 may be situated in any of the parts rotating with the temple shaft 28. In order to obtain that the first support 23 is sunk into the end guide 35, a recess 41 is applied in this end guide 35, as indicated in fig. 10. The recess 41 is preferably V-shaped and has such dimensions that a sufficiently large latitude is offered to enable the temple 11 to be rotated in both directions over a well-defined angle, as indicated by arrow X. Figure 11 further illustrates the form of the end guide 35. As show in fig. 7 the above-mentioned second support 24 is preferably made in the form of U turned upside down. Both legs 42 and 43 of the U shape extend radially in relation to the shaft 30 mentioned above, and are each provided with a bore 44, which form passages for the temple shaft 28. The means 26 which clamp the temple 11 in relation to the second support 24 preferably consist of an element 45 which is situated between the legs 42 and 43 round the temple shaft 28, and screwing means cooperating in conjunction with it, such as a screw 46 which meshes into this element 45, whereby these screwing means allow that when they are tightened the element 45 is moved radially in relation to the above-mentioned shaft 30, such that the temple shaft 28 is clamped against the side wall of the bores 44 mentioned above, and the side wall of the bore 47 in the element 45. The form of the second support 24 and of the element 45 is further illustrated in figs. 12 and 13, The first support 23 is preferably made in one piece with a first supporting part 48 which extends horizontally over the temple 11, while the second support 24 is screwed down by means of a screw 49 or similar. The above-mentioned screw 46 which is screwed into the element 45 passes freely through an opening 50 in the second support 24 and an opening 51 in the supporting part 48 in which the screw 46 rests. This has the advantage that the means 26 to clamp the temple 11 in a well-defined angle position are easily accessible. The tip 25 of the temple 11 is formed by a conic covering piece which is attached to the temple shaft 28 by means of screwing means such as a screw 52 or similar. As indicated in figs. 8 and 9, it is possible to provide screwing means 53 in the shaft part 33, such as a bore with screw thread, in which a waste guide element 54 is provided, as indicated in figs. 4, 5 and 7. In case two temples are mounted on one fabric edge, as represented schematically in fig. 14, the recess 40 as shown in fig. 7 is not accessible. At least for the temple 11 situated nearest to the stop line 14, an embodiment with a tip 25 as shown in fig. 15 is preferably used, whereby an axial opening 55 runs through this top 25 and whereby, in the crosscut end of the temple shaft 28 at the height of the tip 25, a recess 56 is provided in which a tool such as a socket head wrench or similar fits, such that the temple 11 can be turned from the top. The whole is preferably combined with supporting means 27, which allow a number of additional adjustments, particularly the move of the temple 11 in relation to the fabric 2. To this end are preferably used, as indicated in fig. 4, a first supporting part 48 as mentioned above, a second supporting part 57 under which the first supporting part 48 is mounted, and a third supporting part 58 which on the one hand is attached to the frame 19 and on the other hand supports the second supporting part 57. These supporting parts 48, 57 and 58 contain means 59 which allow the temple 11 to be moved in an axial direction; means 60 which allow the temple 11 to be moved in a plane parallel or almost parallel to the fabric 2, and means 61 which allow the temple 11 to be moved essentially perpendicular to the plane of the fabric 2 and/or to be turned over a small angle. Means 59 make sure that the first supporting part 48 can be moved laterally in relation to the second supporting part 57. To this end the first supporting part 48 is screwed onto the second supporting part 57 by means of screws 62. As shown in figs. 4 and 7, the screws 62 pass along the upper side through grooves 63 in the second supporting part 57. By unscrewing the screws 62, the first supporting part 48 can be moved, and consequently the temple 11 can be positioned in relation to the fabric edge 3. An exact setting is possible by making use of a setting cam 65 which can be turned by means of screwing means 64 and which is attached to the second supporting part 57 and which meshes into the supporting part 48, as shown in figs. 4, 7 and 16. It must be noted that the heads of the screws 46 and 49 are surrounded by a second supporting part 57. At the height of these screws 46 and 49 a groove 66 is therefore applied in the second supporting part 57, such that at least the screw 46, regardless of the position of the first supporting part 48, is always accessible and can be screwed on and off, for example by means of a socket head wrench. The screws 46 and 49 are also accessible sideways. Figs. 17 and 18 show a practical embodiment of the means 60 mentioned above. These means provide a fastening of the third supporting part 58 on the frame 19, such that this third supporting part 58 can be moved in a plane parallel or almost parallel to the fabric. The third supporting part 58 can be screwed onto the frame 19 by means of screws 67. The passages 68 applied in the third supporting part 58 consist at least of grooves which extend parallel to the fabric edge 3, and are preferably made with a sufficiently large latitude in relation to the screws 67, such that a small rotational movement of the third supporting part 58 is possible. In the frame 19 two adjusting cams 69 and 70 are mounted according to the weaving width next to each other, and which mesh into the openings 71 and 72 in the third supporting part 58. The adjusting cams 69 and 70 are hereby situated eccentrically in relation to their pivot shafts, such that the third supporting part 58 is moved by their turning. In order to turn the adjusting cams 69 and 70 they are preferably provided with axially directed hexagonal openings 73 and 74 in which a socket head wrench fits. It is clear that by the simultaneous turning of both adjusting cams 69 and 70, the temple 11 can be moved parallel to the stop line, so that it can be taken as closely to the stop line 14 as possible, while the parallelism to the stop line 14 can be set by a mutual turning of the adjusting cams 69 and 70. Once the whole has been set, the third supporting part 58 is tightened by means of screws 67. The above-mentioned means 61 for setting the height of the temple 11 consist in the embodiment shown of a hingeable fastening of the second supporting parts 57 to the third supporting part 58, whereby the second supporting part 57 can rotate round a pivot shaft 75 which extends parallel to the weaving width, as shown in figs. 4, 19 and 20. The hingeable fastening can be formed by a screw 76, whereby the setting is done by means of an adjusting cam 77 which can be rotated by means of a pivot shaft 78 mounted in the third supporting part 58, and which at its outlines works in conjunction with a groove 79 made in the second supporting part 57 and directed essentially radially in relation to the pivot shaft 75. The pivot shaft 78 is preferably formed by a screw stretching through the adjusting cam 77. The adjusting cam 77 is in turn provided with a screw head 80, so that it can be turned round the screw 78. Further an additional screw 81 can be provided which fits, with great latitude, into an opening 82 in the second supporting part 57, such that a well-defined angle rotation of the second supporting part 57 round the pivot shaft 75 is possible. It is clear that, in order to rotate the second supporting part 57, the screws 76, 78 and 81 must be unscrewed a little, after which the adjusting cam 77 must be turned by means of a wrench placed on the screw head 80, so that subsequently, when the whole is properly set, the three above-mentioned screws can be tightened again. This setting allows to change the downward force on the fabric, and to use temples 11 with different diameters. The working of the device can easily be deduced from the figures. The setting is done by means of the above-mentioned means 59, 60 and 61. The meshing of the needles 13 into the fabric can be changed by the fastening according to the invention simply by unscrewing screw 46 and then turning the temple 11 by means of a socket head wrench or similar in either of the recesses 40 or 56, until the temple 11 is presented to the fabric 2 with a side where the needles 13 protrude from the mantle of the temple 11 up to the desired height.

Claims: Fastening for a temple in a weaving machine, particularly for a temple (11) of the type which is meant to hold the edge (3) of a fabric (2), characterized in that the fastening consists essentially of a first support (23) at the height of the fabric edge (3),whereby the temple (11) is mounted in this first support (23) such that it can rotate freely in respect to said first support, and whereby this first support (23) is integrated into the end guide (35) of the temple (11); a second support (24) near the tip (25) of the temple (11) and at the second support (24) means (26) which clamp the temple (11) in relation to the second support (24). Fastening for a temple according to claim 1, characterized in that the end guide (35) is made in one piece with or fixed to the temple shaft (28) and that the other guides (29) are clamped against it by means of a nut (37) which can be turned over the temple shaft (28). Fastening for a temple according to claim 1 or 2, characterized in that the end guide (35) has a V-shaped recess (41) at the height of the first support (23). Fastening for a temple according to any of the above claims, characterized in that the temple (11) is fastened in the first support (23) by means of a shaft part (33) which fits into a bore (34) in the first support (23), whereby the end of this shaft part (33) is almost level with the outside of the first support (23) or is situated inside this support (23). Fastening for a temple according to claim 4, characterized in that the shaft part (33) is provided with screwing means (53) for fastening a waste guide element (54). Fastening for a temple according to any of the above claims, characterized in that the second support (24) has at least one bore (44) which forms a seating for the temple shaft (28), and that the means (26) to clamp the temple (11) in a well-defined angle position consist of an element (45), also situated round the temple shaft (28), and screwing means (46) to move this element radially in relation to the temple shaft (28). Fastening for a temple according to claim 6, characterized in that the second support (24) has a U shape, whereby the above-mentioned element (45) for clamping the temple shaft (28) is situated between the legs (42, 43) of the U shape. Fastening for a temple according to claim 6 or 7, characterized in that the screwing means (46) for moving the element (45) for clamping the temple shaft (28) consist of a screw (46) which rests on a fixed supporting part (48) and which meshes into the above-mentioned element (45). Fastening for a temple according to any of the above claims, characterized in that in at least one of the parts which can turn with the temple shaft (28) a radially directed recess (40) is provided in which may fit a tool for turning the temple shaft (28). Fastening for a temple according to any of the above claims, characterized in that in the crosscut end of the temple shaft (28), particularly in the end situated at the height of the above-mentioned second support (24), a recess (56) is provided in which may fit a tool for turning the temple shaft (28). Fastening for a temple according to any of the above claims, characterized in that the tip (25) of the temple (11) is formed by a covering piece which can be rotated and which can be clamped by screwing means, Fastening for a temple according to any of the above claims, characterized in that it has means (59) to move the temple (11) in an axial direction. Fastening for a temple according to claim 12, characterized in that the means (59) which allow the temple (11) to be moved axially consist of a supporting part (48) to which the above-mentioned first and second supports (23, 24) are attached or of which they are part; a supporting part (57) which is fastened either directly or indirectly to the frame (19) of the weaving machine; screws (62) which fit through the grooves (63) and by which both supporting parts (48, 57) are screwed together, whereby these grooves (63) extend according to the axial direction of the temple (11); and an adjusting cam (65) which cooperates in conjunction with the supporting part (48) to which the temple (11) is fastened. Fastening for a temple according to any of the above claims, characterized in that it has means (61) which allow to set the height of the temple (11). Fastening for a temple according to claim 14, characterized in that the means (61) which allow to set the height of the temple (11) consist essentially of a supporting part (57) under which the temple (11)is mounted either directly or indirectly; a supporting part (58) which is connected to the frame (19) of the weaving machine; a hingeable fastening between both supporting parts (57, 58) mentioned above, with a pivot shaft (75) which extends in the direction of the weaving width; an adjusting cam (77) for setting the angle position of the supporting part (57) on which the temple (11) is mounted in relation to the supporting part (58) which is mounted on the frame (19) of the weaving machine; and clamping means (76, 81) for clamping together both supporting parts (57, 58) mentioned above. Fastening for a temple according to any of the above claims, characterized in that it has means (60) which allow to move the temple parallel to the newly formed fabric (2). Fastening for a temple according to claim 16, characterized in that the means (60) which allow to move the temple (11) parallel to the newly formed fabric consist of a supporting part (58) which is fastened to the frame (19) of the weaving machine by means of screws (67), and which in relation to the frame (19) can be moved in a plane which is parallel with the fabric (2), and at least two adjusting cams (69, 70) which may provide the moving of the supporting part (58).

Inventors: VANDEPUTTE ETIENNE, VANDEPUTTE, ETIENNE
Applicants: PICANOL NV, PICANOL N.V.
Application year: 1990
Main classification: D03J1
IPC codes: D03J1