JP2005539156A - Mounting frame and loom equipped with said mounting frame - Google Patents

Abstract

The heald frame obtained by assembling two struts (21) with a cross bar (22), each with a heald carrier rod (29), comprises at least one hoop (40), which is a cross The tube of the crossbar (22) is connected to the adjacent strut (21) and the bar of the crossbar (22) is within a region in which at least one locking member (25, 26) of the strut portion (21a) is received. Surrounding the end (28). The connecting region is created in the portion (35) of the end (28), which has a generally convex outer lateral profile. The hoop is provided to withstand the locking force (F3, F'3) applied by the locking members (23, 24).

Description

  The present invention relates to a heald frame and a loom equipped with such a frame.

  According to a suitable device such as a textile system or dobby, it is known to have a loom with a heald frame adapted to be controlled in a reciprocating vertical motion. It is known to produce a heald frame by reversibly assembling two struts and two crossbars, which struts are approximately vertical when the heald frame is in the use configuration, but the crossbars are approximately It is horizontal.

  Patent document 1 discloses an elastic connecting device that cannot be disassembled, and this connecting device may be used at the angle of the heald frame, i.e. in the connecting region between the crossbar and the strut. In this device, the protrusions made on the struts are clamped between two jaws with two rigid parts forming a head adapted to be clamped inside the crossbar. It is like that. Considering the acceleration and deceleration forces exerted by the heddle frame, such a coupling device can cause very large stresses on the crossbar, which can cause cracks in the side walls of such a crossbar.

  A similar problem has been posed in the device known from US Pat. No. 6,057,056, in which a rigid type link is created between the struts of the heald frame and the crossbar using a tension member on the side of the crossbar. It has been.

As long as the loom is desired to operate at higher speeds, the problems identified above are even more serious. This means that in order to reduce the inertia of the heald frame, the mechanical resistance of the crossbar is thus reduced to the utmost limit. The contrast, ie the mechanical link between the struts and the crossbar, must be more robust to withstand the more severe acceleration and deceleration experienced by these moving parts.
French Patent No. 2681614 specification French Patent No. 3308371 European Patent Application No. Specification

  It is an object of the present invention to solve the problems of conventional devices by proposing a sturdy heald frame that can be mounted on a loom operating at high speed.

  The present invention is a heald frame for a loom, which is obtained by assembling two struts with two crossbars, each of which includes a heald carrier rod integral with a corresponding crossbar. Or at least one end of the crossbar, at least one of the ends of the crossbar forming a connection area with the strut And a heald frame of the type comprising at least one member for locking a part of an adjacent strut.

  In order to withstand the locking force exerted by the locking member, the heald frame comprises a portion whose outer lateral contour is substantially convex, and at least one hoop. Surrounds the portion and the locking member.

  In accordance with the present invention, the hoop, which may be formed by a tubular sleeve or a bent sheet, provides resistance to the crossbar against the force transmitted by the adjacent struts and resulting from locking that portion of the struts. Can be improved. Therefore, this reduces the risk of deterioration of the crossbar in the connection area. In other words, the mechanical force experienced by the crossbar in the connection area is reduced by the hoop, which improves the overall mechanical properties of the heald frame. Although the present invention benefits from the fact that the connection area can be engaged with the hoop by having a substantially convex profile, this profile can, for example, define an opening or cavity for capturing the end of the heald. If so, it is not.

  Other advantageous aspects of the invention that are related to each other in any technically feasible combination are apparent from the dependent claims.

  The present invention further relates to a loom comprising at least one heald frame as previously described. Such looms can operate at high speed and are more reliable than conventional looms.

  The present invention will be described based on examples with reference to the drawings.

Embodiment

  In FIG. 1, the dobby 1 drives the heald frame 2 of the loom M in the reciprocating vertical motion indicated by the arrows F1 and F1 ′. For this purpose, an arm 1a for operating the dobby 1 is connected to each heald frame 2 by a connecting rod and a turning lever.

  Each of the frame frames 2 is formed by an assembly of two struts 21 and two crossbars 22. The struts 21 basically extend in a direction parallel to the vertical vibration direction ZZ ′ of the heald frame 2, but the crossbar 22 basically has a direction Y− perpendicular to the direction ZZ ′. When it extends to Y ′ and the loom M is in use, it is basically horizontal.

    In the following description, the connection between the left hand strut 21 of the heald frame 2 and the upper crossbar 22 will be examined in more detail. It can be seen that the crossbar with the right hand strut 21 or the assembly of the lower crossbar with one or the other of the struts 21 includes the same structural and functional features.

  As is particularly apparent from FIG. 2, the strut 21 includes a protrusion 21 a, which is connected to each of the rigid members 25, 26 connected to each other inside the end 28 of the crossbar 22. It is introduced between the two fixed jaws 23 and 24. To that end, the crossbar 22 is hollow and is constituted by a substantially rectangular cross-section tubular section extending substantially throughout its length, and the tab 29 is a heald for guiding the warp yarn of the loom M. A heald carrier rod 30 is hooked.

  In the middle, it is advantageous for the crossbar 22 to be filled with a rigid and / or soundproof material.

  The lower crossbar is similarly equipped with a heald carrier rod.

  The rod 29 is integral with the cross bar 22 and is connected to the cross bar 22 by a web 29c over almost the entire length thereof.

31 and 32 each indicate the short side above and below the tubular portion of the crossbar 22. 33 and 34 each indicate the longer side of this part. Reference numeral 35 denotes a tubular portion of the end 28 into which the members 25 and 26 are introduced. The tubular portion 35 is separated from the end portion 29 a of the heald carrier rod 29 by a groove 36. The groove extends from the end face 28 a of the end portion 28 in a direction Y ₃₆ -Y ′ ₃₆ parallel to the longitudinal axis Y ₂₂ -Y ′ _{22 of the} crossbar 22.

  The assembly of the members 21 and 2 is performed by fixing the projection 21a between the jaws 23 and 24, thanks to tightening of the moving screw 37. As indicated by the arrows F2 and F'2, the jaws 23 and 24 approach each other, so that the members 25 and 26 act on the sides 31 and 32 with the locking force indicated by the arrows F3 and F'3. This force is applied via a member 27 made of elastomer placed under stress between each member 25 or 26 and the nearest side 31 or 32. This elastomeric member follows the teaching of US Pat.

In order to effectively withstand this locking force without the risk of tearing the tubular part 35, the hoop 40 is arranged around the tubular part 35, a part of which is engaged in the groove 36. The hoop 40 is formed of a sheet metal plate, bent around the tubular portion 35, fixed around it in cooperation with the shape, and introduced into the tubular portion 35 by two screws 41. Screwed in the threaded orifice 42a. Furthermore, the screw 41 extends through the plate 43 to distribute over the force _{F 5} tightening the respective edges 40a and 40b of the side 31 of the tubular portion 35 to the length of the hoop 40.

The tubular part 35 and the hoop 40 together form the end P of the crossbar 22 which includes the locking means 25 and 26 and withstands the locking forces F ₃ and F ′ ₃ .

  The hoop 40 can efficiently perform the role of reinforcing the tubular portion 35. This is because this part has an outer lateral contour constituted by the outer surfaces of the sides 31 to 34, which contour is convex and is therefore suitable for the use of such a hoop. In fact, if the hoop is located both around the tubular portion 35 and around the distal end 29a of the rod 29, heald hooking in this region will not be possible and the rod 29 will be connected to the short side 32 of the rod and tubular portion 35. Since there is a gap or a cavity between them, it may collapse.

In this way, the hoop 40 can be appropriately arranged around the tubular portion 35 by the groove 36. The groove 36 has a length L ₃₆ equal to or greater than the width l _{40 of the} hoop 40, and the member 29 a of the rod 29 extends beyond the length L ₃₆ . In fact, the length L ₃₆ is slightly larger than the width l ₄₀ .

  In the second embodiment of the invention shown in FIGS. 4 and 5, the same members as in the first embodiment have the same reference numerals increased by 100. The crossbar 122 in this embodiment includes a hoop 140 that surrounds a convex transverse profile portion 135 of its distal end 128. 131 and 132 each indicate the short side of the convex lateral contour portion 135, while 133 and 134 indicate the long side of the convex lateral contour portion 135.

  This embodiment differs from the previous embodiment in the following points. The fixing of the hoop 140 around the convex transverse contour part 135 is done by blocking the two wedges 144 and 144 ', which are connected by screws 145 and complementary wedges 146. Cooperating, this complementary wedge is fixed to the inner surface 140c of the hoop 140, which is constituted by a tubular sleeve made of steel.

  144a, 144′a, 146a and 146′a indicate fixing surfaces provided on the wedge-shaped portions 144, 144 ′ and 146, respectively, and the fixing surface 146′a cooperates with the fixing surface 144′a. It is one fixed surface of the wedge-shaped part 146.

  The end P formed by the portions 135 and 140 may include locking means like the end of the first embodiment.

  Unlike the first embodiment in which the portions 29 and 35 are integrated, the rod 129 for hooking the heald of this second embodiment is provided on the main tubular portion 135. For this purpose, the short side 132 of the tubular part 135 is provided with a groove 138 into which a ring 129 b is inserted, which is firmly connected to the rod 129, the section of this ring supplementing the section of the groove 138. There is a relationship. This allows the rod 129 to be suspended from the tubular portion 135. 129c shows the connecting web between the ring 129b and the portion of the rod 129 on which the heald is hooked. As described above, the web extends substantially the entire length of the crossbar 122 and ends at the height of the end portion 129a of the rod 129, thereby allowing the hoop 140 to be positioned. Is formed.

  As shown in FIG. 6, the hoop 140 may be rounded at the top of the complementary wedge 146.

In the fourth embodiment of the present invention shown in FIG. 7, members similar to those of the first embodiment have the same reference numerals increased by 200. The crossbar 222 of this embodiment includes a surface 222b that is inclined with respect to its longitudinal axis Y ₂₂₂ -Y ′ ₂₂₂ and cooperates with the inclined surface 244a of the wedge-shaped portion 244. This wedge-shaped portion is engaged with a stopper 247 by a screw 245, and this stopper is provided in contact with the side edge portion 240d of the hoop 240 in the shape of a tubular metal sleeve. The pulling force applied on the wedge-shaped portion 244 by the screw 245 makes it possible to apply tension to the hoop 240, so that the hoop can be fixed around the convex contour portion 235 of the crossbar 22. At the same time, the convex contour portion forms the end portion P of the cross bar 222.

In the fifth embodiment of the present invention shown in FIG. 8, members similar to those of the first embodiment have the same reference numerals increased by 300. The hoop 340 is provided around the portion 335 of the crossbar 322 and forms an end P with it. The wedge 344 includes an active surface 344 a that cooperates with an active surface 340 c defined by the inner surface of the hoop 340, which is the longitudinal axis Y of the crossbar 322. It is inclined with respect to the ₃₂₂ / Y _'322. The movement of the wedge-shaped part 344 is controlled by a screw traversing a stopper 347 provided in contact with the side edge part 340d of the hoop 340.

  In the sixth embodiment of the present invention shown in FIG. 9, members similar to those of the first embodiment have the same reference numerals increased by 400. The hoop 440 of this embodiment is fixed around the portion 435 of the crossbar 422 by an adhesive layer 448, and the hoop forms an end P together with this portion. At the height of the short side 431 above the portion 435, this adhesive layer 448 is thick enough for the wedge-shaped portion 444 that can be inserted in the direction of arrow F6 in FIG. 9, thereby positioning the hoop 440 and the adhesive. The effect of ensuring appropriate distribution is obtained.

  In the seventh embodiment of the present invention shown in FIG. 10, members similar to those of the first embodiment have the same reference numbers increased by 500. The hoop 540 is secured around a portion 535 of the crossbar 522 by a screw 541 that passes through an orifice 540e made in the hoop 540 and is screwed into a short side 531 above the portion 535. Has been. In variations, a plurality of screws of the type such as screw 541 may be used. An end P of the cross bar 522 is formed by portions 535 and 540.

  As shown in FIGS. 11 and 12, the vertical shape of the hoop 640 or 740 can improve the progress of force transmission between the hoop and the crossbar. Thus, the edge 640d of the hoop 640 facing the end surface 628a of the cross bar 622 has a pointed shape on one side, the other side, or both sides of the cross bar. Conversely, and as shown in FIG. 12, this edge 740d may have a recessed shape. The geometry of these edges 640d and 740d is suitable in the case of a link mechanism between the crossbar and the hoop, in particular made by gluing. With these geometric shapes, the transmission of force between the crossbar and the hoop at the height of the end P can be concentrated well.

In the tenth embodiment of the present invention shown in FIG. 13, members similar to those of the first embodiment have the same reference numerals increased by 800. The hoop 840 is secured around a portion 835 of the distal end 828 of the heald frame crossbar 822. Portion 835 has a generally convex outer lateral profile while crossbar 822 includes heald carrier rod 829. The groove 836 is formed to allow the hoop 840 to pass between the portion 835 and the rod 829, and this hoop is a sheet metal plate bent around the portion 835, like the hoop 40 of the first embodiment. It is constituted by. The groove 836 is not open in the end surface 828 a of the end 828, but is formed by a rectangular slot whose main axis X ₈₃₆ -Y ′ ₈₃₆ is aligned with the longitudinal axis Y ₈₂₂ -Y ′ ₈₂₂ of the crossbar 822. It is almost parallel to it.

  In the eleventh embodiment of the present invention shown in FIG. 14, members similar to those of the first embodiment have the same reference numerals increased by 900. The heald frame of this embodiment comprises a strut 921, which has a protrusion 921a that is adapted to be introduced inside the end 928 of the crossbar 922.

  For this purpose, the crossbar 922 is at least at its end region hollow and is constituted by a tubular section of substantially rectangular cross section in this region, from which a heald carrier rod is formed. A rod 929 extending over almost the entire length of the cross bar can suspend a heald 930 for guiding the warp of the loom M on the rod.

  The lower crossbar is similarly equipped with a heald carrier rod.

931 and 932 each indicate the short side above and below the tubular portion of the crossbar 922. 933 and 934 each indicate the long side of this part. Reference numeral 935 denotes a tubular portion of the end portion 928 into which the protruding portion 921a is introduced. The tubular portion 935 is separated from the end portion 929 a of the heald carrier rod 929 by a groove 936, which groove extends from the end surface 928 a of the end portion 928 to the longitudinal axis Y ₉₂₂ -Y ′ _{922 of the} crossbar 922. _{Extending in} the direction of parallel direction Y ₉₃₆ -Y ′ ₉₃₆ .

  The hoop 940 is disposed around the tubular portion 935 and a portion thereof engages in the groove 936. Portions 935 and 940 form the end P of the crossbar 922 together.

  The hoop 940 is tensioned around the tubular portion 935 of the crossbar 922 and thanks to two wedge-shaped portions 944 and 944 ′ connected by screws 945 and is fixed against the inner surface 940 c of the hoop 940. Cooperating with the complementary complementary wedge 946.

944a, 944′a, 946a and 946′a indicate slide surfaces or ramps provided on the wedges 944, 944 ′ and 946, respectively, and the surface 946′a cooperates with the surface 944′a. This is the surface of the wedge-shaped portion 946. The faces 944a and 944′a are inclined with respect to the longitudinal axis of the screw 945, ie the longitudinal axis Y ₉₂₂ -Y ′ ₉₂₂ , by two angles α ₁ and α ₂ that are opposite in direction and equal in absolute value. Yes.

  The long sides 933 and 934 of the tubular portion 935 each include a resilient supple slot 949 through which the protrusion 921a can be introduced into the tubular portion 935, and then the wedges 944 and 944 ' The tubular portion can be clamped around the projection as they approach each other.

  In this manner, the mechanical members 944 and 946 can both secure the protrusion 921a within the tubular portion 935 and tension the hoop 940 around the tubular portion. In fact, by screwing the screw 945 into the wedge-shaped portion 944, the effect of bringing the wedge-shaped portions 944 and 944 'close to each other is obtained, and the surfaces of these wedge-shaped portions or the inclined paths 944a and 946'a are either surface or inclined. Slide against paths 946a and 946'a. As a result, an effect of moving the wedge-shaped portion in the direction of the rod 929 is obtained.

These wedges apply a force F ₉ directed toward the rod 929 on the tubular portion 935, and the tubular portion 935 deforms due to the elasticity provided by the slot 949. Such deformation of the tubular portion 935, fixed force _{F 10} of the protrusion 921a of the tubular part is obtained.

Furthermore, the relative slide of the wedges 944 and 944 'on the one hand and the wedge 946 on the other hand has the force to transmit a force F11 that tensions this member to the hoop. Considering the nature of the hoop 940 closing, it should be noted that the force F ₁₁ is transmitted to the height of the portion of the hoop that traverses the groove 936, thereby combining the forces F ₁₀ and F _11. A force for fastening the protrusion 921a is obtained.

In fact, the force _{F 10} and _{F 11} are cancel each other out.

  It should be noted that the geometry of the strut 921 is particularly simple because the protrusion 921a is integral with the main portion 921b of the strut 921 extending parallel to the direction of vibration ZZ ′ of the heald frame. .

  The hoop 940 serves to efficiently reinforce the portion 935. This is because the tubular portion is convex, constituted by the outer surfaces of the sides 931-934, and thus has an outer lateral profile that is adapted to use such a hoop.

Further, the protrusion 921a is provided with two spires 921g and 921h at the height of the upper and lower sides of each, and these spires are provided in the short sides 932 and 931 of the tubular portion 935, respectively. The hollow housings 932g and 931h are inserted. The spire portions 921g and 921h are respectively defined between two V-shaped surfaces 921i and 921j that are substantially flat and parallel to the axis Y ₉₂₂ -Y ′ ₉₂₂ . These V-shaped surfaces are inclined by an angle γ on the order of 45 ° with respect to a plane P ′ 2 perpendicular to the main surface P of the heald frame 2 in the plane of FIG. 3. The actual angle γ has a value comprised between 20 ° and 70 °. In other words, the upper and lower sections of the protrusion 921a are substantially triangular. In a variant, only one of these sides may have such a geometric shape.

  The inner geometric shape of the cross bar 922 is adapted to the geometric shape of the protrusion 921a, but the housings 932g and 931h each have two inclined surfaces 932i forming the same angle γ by the plane P′1. And 932j, and 931i and 931j.

In this way, the bearing between the crossbar 922 and the member 921a is and is distributed on each side of the plane _{P 2} is inclined with respect thereto, two sets of surfaces, on the one hand through 921I, the 931i and 932I, The other is done via 921j, 931j and 932j.

  Surfaces 921i and 921j are inclined relative to each other in the same manner as surfaces 931i and 931j on the one hand and surfaces 932i and 932j on the other.

  Due to the inclined nature of the surfaces 921i, 921j, 931i, 931j, 932i and 932j, the adherence between the members 921 and 922 can be improved.

  In the twelfth embodiment of the present invention shown in FIGS. 16 and 17, members similar to those of the first embodiment have the same reference numerals increased by 100. The strut 1021 of this embodiment is similarly provided with a protrusion 1021a integral with the extension 1021b, and this protrusion is inserted into the portion 1035 of the end portion 1028 of the crossbar 1022. As described above, the hoop 1040 is provided around the portion 1035 and forms an end P therewith.

In this embodiment, the mechanical means for fixing the protrusion and applying tension to the hoop is not provided between the portion 1035 and the hoop as in the first embodiment. Is provided. More precisely, the wedges 1044 and 1044 ′ are controlled by screws 1045 with movement that moves parallel to the longitudinal axis Y ₁₀₂₂ -Y ′ _{1022 of the} crossbar 1022.

1044a and 1044′a indicate the faces of these wedges 1044 and 1044 ′, which each form a ramp. These surfaces, and surfaces 1021c and 1021d and each cooperate with these surfaces to the longitudinal axis and the axis _{Y 1022} -Y _'1022 of the screw 1045, the direction opposite the absolute value is equal inclination angles β1 and β2 An inclined path is formed on the protrusion 1021a having the shape.

  The strut 1021 further includes a rod 1021e, which has an orifice 1021f through which the screw 1045 passes.

As a function of tightening the screw 1045, the short side 1031 and 1032 of portion 1035, a force _{F 11} to be transmitted to the hoop 1040 for tensioning thereto is applied. As described above, the force _{F 11} is transmitted by the hoop 1040 into the lower part of the protrusion 1021a of FIG. Furthermore, the ramps 1044 and 1044 'are the corresponding surface of the protruding portion 1021a, applies a force _{F 10} for fixing the protruding portions.

  As more particularly apparent in FIG. 5, the contoured nature of the portion 1035 is obtained by incorporating a filling element 1050 into the hollow portion 1022a of the crossbar 1022. In a variant, the filling element may be coupled with the hoop before the hoop 1040 is placed around the portion 1035.

  The screw 945 is offset with respect to the portion 921b of the strut 921 perpendicular to the axis Y922-Y′922 and beyond the protrusion 921a. Similarly, the screw 1045 is displaced with respect to the portion 1021b. In this way, these screws can be easily moved without having to penetrate the main part of the strut.

  In the thirteenth embodiment of the present invention shown in FIG. 18, members similar to those of the first embodiment have the same reference numerals increased by 1100. The metal strut 1121 of this embodiment includes a tenon integrated with the main portion 1121b of the strut, that is, a protrusion 1121a.

  The crossbar 1122 of this embodiment includes a main member 1122a that is advantageously made of synthetic material. This portion 1122a is integral with the heald carrier rod 1129 and is connected to the heald carrier rod by a web 1129c. The crossbar 1122 further includes a metal hoop 1140 that is glued around one end 1128 of the portion 1122a. Reference numeral 1148 denotes an adhesive layer interposed between the members 1140 and 1128a. The hoop 1140 extends beyond the end 1128a in the direction of the main portion 1121b of the strut 1121. 1140a shows the portion of the hoop that surrounds the end portion 1128a of the composite portion 1122a of the crossbar 1122. 1140b shows the main portion of the hoop 1140, which extends beyond the portion 1128a and defines a tubular portion 1135 of the crossbar 1122 provided to accommodate the tenon 1121a. Members 1128a and 1140 form end P of crossbar 1122 together.

  As described above, the notch 1136 is made between the main portion 1122a of the crossbar 1122 and the heald carrier rod by a local recess in the web 1129c. Held carrier rod 1129 protrudes over a portion of its length.

  The nut 1126 is fixed to the inner surface of the hoop portion 1140 b and is moved by the shaft portion 1125 a of the lock screw 1125. The shaft portion 1125a and the nut 1126 constitute a means for locking the tenon 1121a provided inside the portion 1140b of the hoop 1140.

  This embodiment has the special advantage that the non-decomposable linkage between the tenon 1121a and the hoop 1140 uses only members made of metal that are highly resistant to abutting each other. Yes. In addition, the entire inner volume of the hoop 1140 is effective to position the tenon 1121a, which has a height and thickness that is relative to the height and thickness of the corresponding member of the heald frame of other embodiments. It may be increased.

  According to a variant of the invention (not shown) applicable to different embodiments, the hoop may be fixed on the crossbar by thermocompression.

  Regardless of what embodiment is considered, the hoop is in place on the crossbar when disassembling the frame, so that the hoop protects the end of the part of this crossbar made especially of synthetic material. be able to.

  In considering any embodiment of the present invention, the heald carrier rod remains fixed with the crossbar, suggesting that the heald used is of the “open” type.

  The present invention has been shown using mechanical means with two wedges that cooperate to secure the strut and tension the hoop. However, the present invention is applicable with a single wedge that provides the only force on the ramp.

  The present invention can be applied without depending on the material used for the frame, particularly the members constituting the strut portion and the crossbar. In particular, the present invention is applicable to a frame made of a light alloy such as aluminum and a frame made of a composite material using an organic resin and carbon reinforced fiber or glass reinforced fiber.

  The present invention is applicable independent of the geometry of the crossbar heald carrier rod having various shapes that match the shape of the end of the heald.

  The features of the various embodiments described above may be combined together within the scope of the present invention. In particular, an inclined surface similar to the surface 921i, 921j, 931i, 931j, etc. of the eleventh embodiment is formed between the crossbar 1022 and this protrusion at the height of the protrusion 1021a in the twelfth embodiment. May be provided at the height of the lower short side 1032 and / or between the crossbar 1022 and the wedges 1044 and 1044 ′ at the height of the upper short side 1031.

1 is a schematic view of a loom according to the present invention. FIG. 2 is a partial exploded cross-sectional view of the heald frame of the loom of FIG. 1 at the height of the tip of each of the struts and one of the crossbars. It is sectional drawing along the III-III line of FIG. FIG. 6 is a scaled cross-sectional view of the upper and lower portions of a crossbar of a heald frame according to a second embodiment of the present invention. It is sectional drawing along the VV line of FIG. FIG. 6 is a cross-sectional view similar to the upper portion of FIG. 5 in the case of a frame according to a third embodiment. FIG. 5 is a cross-sectional view similar to FIG. 4 in the case of a frame according to a fourth embodiment of the present invention. FIG. 6 is a cross-sectional view similar to FIG. 4 in the case of a frame according to a fifth embodiment of the present invention. FIG. 7 is a cross-sectional view similar to FIG. 4 in the case of a frame according to a sixth embodiment of the present invention. FIG. 6 is a cross-sectional view similar to FIG. 4 in the case of a frame according to a seventh embodiment of the present invention. FIG. 10 is a side view of an end of a cross bar of a heald frame according to an eighth embodiment of the present invention. FIG. 12 is a view similar to FIG. 11 for a heald frame according to a ninth embodiment of the present invention; FIG. 16 is a view similar to detail VIII of FIG. 2 in the case of a frame according to a tenth embodiment of the present invention. FIG. 32 is a view similar to FIG. 2 in the case of a frame according to the eleventh embodiment of the present invention. It is sectional drawing along the XV-XV line | wire of FIG. FIG. 16 is a cross-sectional view similar to FIG. 15 for a heald frame according to a twelfth embodiment of the present invention. FIG. 17 is a partial cross-sectional view taken along line XVII-XVII in FIG. 16. FIG. 6 is a view similar to FIG. 2 in the case of a frame according to the thirteenth shape of an embodiment of the present invention.

Explanation of symbols

22 Crossbar 25 Lock member 26 Lock member 28 End portion 28a End surface 29 Held carrier rod 35 Part 36 Volume portion 40 Hoop 41 Fixing means 42 for fixing the hoop 42 Fixing means 122 for fixing the hoop 122 Crossbar 129 Held carrier Rod 135 Part 136 Volume 140 Hoop 144 Fixing means 144 ′ for fixing the hoop Wedge-shaped part 145 Fixing means 146 for fixing the hoop Fixing means 146a for fixing the hoop Inclined path 146a ′ Inclined path 222 Crossbar 222b Ramp 235 Part 240 Hoop 244 Fixing means 245 for fixing the hoop Fixing means 146 for fixing the hoop Fixing means 247 for fixing the hoop Fixing means 322 for fixing the hoop Crossbar 335 Part 340 Hoop 3 40c Ramp 344 Fixing means 345 for fixing the hoop Fixing means 346 for fixing the hoop Fixing means 347 for fixing the hoop Fixing means 422 for fixing the hoop Crossbar 435 Part 436 Volume part 440 Hoop 444 Fixing means 448 for fixing the hoop Fixing means 522 for fixing the hoop 522 Cross bar 535 part 540 Hoop 540e Orifice 622 Cross bar 640 Hoop 740 Hoop 822 Cross bar 828 Terminal part 828a End surface 829 Held carrier rod 835 part 836 Volume Portion 840 Hoop 929 Held carrier rod 935 Portion 921 Strut 921a Strut portion 921b Long portion 922 Crossbar 928 End portion 931 Lower contact area 931i Bearing surface 931j Bearing 932 Upper contact area 932i Bearing surface 932j Bearing surface 936 Volume 940 Hoop 944 Lock member 944 'Wedge-shaped portion 945 Lock member 946 Lock member 1021 Strut 1021a Strut portion 1021b Elongated portion 1021e Holding member 1021f Orifice 1022 Crossbar 1028 End portion 1031 Lower contact area 1032 Upper contact area 1035 Part 1136 Volume part 1040 Hoop 1044 Lock member 1044 'Wedge-shaped part 1046 Lock member 1122 Crossbar 1122a Main part 1125a Lock member 1126 Lock member 1128a End part 1129 Held carrier rod 1135 Part 1136 Volume part 1140 Hoop 1050 Filling element

Claims (28)

A heald frame for a loom, wherein the heald frame is obtained by assembling two struts with two crossbars, each of which has a heald carrier rod integral with the corresponding crossbar. Or on it, over the entire length of the heald carrier rod,
At least one of at least one end of the crossbar comprises at least one member for locking a portion of an adjacent strut inside the end of the crossbar forming a connection area with the strut. In the heald frame
In order to withstand the locking force (F ₃ , F ′ ₃ ) applied by the locking member,
The end (P) has a substantially convex outer lateral profile (35; 135; 235; 335; 435; 535; 835; 935; 1035; 1135) and at least one hoop (40 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040; 1140), and the hoop includes the substantially convex outer lateral contour portion and the locking member (25, 26). 944-946; 1044, 1046; 1125a, 1126).   The hoop (40; 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040) is a portion of the generally convex outer lateral profile (35; 135; 235; 335; 435; 535; 835; 935; 1035), the laterally contoured portion being tubular and itself the locking member (25; 26; 1044; 1046) and / or said portion of the strut (921a; 1021a). The heald frame according to claim 1, wherein the heald frame is configured to surround the frame.   The crossbar (22; 122; 222; 322; 422; 522; 622; 822; 922; 1022; 1122) is connected to the connecting region (35; 135; 235; 335; 435; 535; 835; 1035; 1128a). And the heald carrier rod (29; 129; 829; 929; 1129) and one of the hoops (40; 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040; 1140) The heald frame according to claim 1 or 2, further comprising a volume part (36; 136; 436; 836; 936; 1136) for accommodating the part. The volume is formed by a groove (36; 136; 436; 836; 936; 1136) which is connected to the connecting region (35; 135; 435; 935; 1128a; 1135) and the rod (29; 129; 829; 939; 1129) with respect to the longitudinal axis (Y ₂₂ -Y ′ ₂₂ ; Y ₈₂₂ -Y ′ ₈₂₂ ) of the crossbar (22; 122; 822; 922; 1122). The heald frame according to claim 3, wherein the heald frame extends in a parallel direction (Y ₃₆ -Y ′ ₃₆ ; Y ₈₃₆ -Y ′ ₈₃₆ ).   The groove (36; 136; 436) is connected to the end face (28a) of the end (28; 928; 1028) of the crossbar (22; 122; 222; 322; 422; 522; 522; 622; 922; 1022; 1122). The heald frame according to claim 4, wherein the heald frame is opened.   The groove is formed by a rectangular slot (836) formed between the generally convex outer lateral profile portion (835) and the heald carrier rod (829), the slot being a cross 4. A heald frame according to claim 3, characterized in that it is not open on the end face (828a) of the end (828) of the bar (822).   The length of the heald carrier rod (29; 129; 829; 929; 1129) provided relative to the connecting region (35; 135; 935; 1128a; 1135) (29a; 129a; 929a) The heald frame according to any one of claims 1 to 5, wherein the heald frame protrudes and extends.   On the connecting region (35; 135; 235; 335; 435; 535; 835; 935; 1035; 1128a; 1135), the hoop (40; 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040; 1140) with means (40-42; 144-146; 244-247; 344-347; 444; 448; 944-946; 1044; 1046; 1148) The heald frame according to any one of claims 1 to 7.   The fixing means comprises a wedge-shaped part (144, 144 '; 244; 344) cooperating with a corresponding ramp (146a, 146a', 222b; 340c), which wedge-shaped part is outside the crossbar (222). It is provided for tensioning the hoop (140; 240; 340) on the side surface (222b), the intermediate member (146) or the inner surface (340c) of the hoop (340). Item 9. The heald frame according to Item 8.   When the wedge-shaped portion (144; 244; 344) moves relative to the ramp (146a, 146a ', 222b; 340c), a screw-nut link mechanism (144-145; 244-245; 344-345) 10. The heald frame according to claim 9, wherein the heald frame is controlled by.   9. A heald according to claim 8, wherein the hoop (440; 1140) is glued (448; 1148) around the end (435; 1128a) of a crossbar crossbar (422; 1122a). flame.   The said hoop (540) comprises at least one orifice (540e) for allowing a locking member (541) to pass over said crossbar end (535). Held frame.   The heald frame according to any one of claims 1 to 12, wherein the hoop (40) is formed by bending a metal sheet formed around the connection region (35). Mechanical means (944-946; 1044-1045) by means of which the fixing force (F) of the part (921a, 1021a) of the strut (921; 1021) in the end (935; 1035) The heddle frame according to any one of claims 1 to 13, characterized in that the tension (F ₁₁ ) of ₁₀ ) and the hoop (940; 1040) is guaranteed.   The mechanical means comprises at least one wedge-shaped portion (944, 944 ′; 946; 1044, 1044 ′), which wedge-shaped portion (921a, 1021a) and the hoop (940) of the strut (921; 1021). 15. A heald frame according to claim 14, wherein the heald frame is inserted between The wedge-shaped portion; the (944,944 '1044,1044'), said cross bar cross bar substantially parallel to _{the;; ( 'Y 1022} -Y' ₁₀₂₂ Y 922 _{-Y 922)} longitudinal axis of the (922 1022) 16. A heald frame according to claim 15, wherein the translational movement is controlled by a screw-nut type link mechanism (944-945; 1044-1045). The mechanical means comprises two wedges (944, 944 ′; 1044, 1044 ′), which are longitudinal axes (Y ₉₂₂ -Y ₉₂₂ ′) of the crossbar (922; 1022). ₁₀₂₂ −Y ′ ₁₀₂₂ ) and force transmission ramps (944 a, 944 ′ a; 1044 a, 1044 ′ a) inclined at an angle (α 1, α 2; β 1, β 2) relative to each other. The heald frame according to claim 15 or 16.   The portion (921a, 1021a) of the strut (921; 1021) inserted into the end (935; 1035) of the crossbar (922; 1022) is the main longitudinal portion (921b; 1021b) of the strut. The heald frame according to any one of claims 14 to 17, wherein the heald frame is configured to be integral with the frame.   The portion (1021a) of the strut (1021) inserted into the end (1035) of the crossbar (922; 1022) has a member (1021e) for holding the mechanical means (1044-1045). The heald frame according to any one of claims 14 to 18, wherein the heald frame is provided.   The member is a rod (1021e), and this rod has two wedge-shaped portions (1044, 1044 ′) against an inclined path (1021c; 1021d) formed on the portion (1021d) of the strut (1021). ) And an orifice (1021f) for passing a screw (1045) for tightening, which is formed on the portion (1021d) of the strut (1021) on each side of the rod. The heald frame according to any one of claims 16 to 19. At the height of at least one of the upper contact region (932, 1032) and the lower contact region (931, 1031) with the strut (921) and / or the wedge-shaped portion (1044, 1044 ′) supported by the strut (1021). ,
It said cross bar (922,1022) has become a parallel and helical to each other with respect to the cross bar of the longitudinal axis _(Y 922 _{-Y 922} '), at least two substantially flat bearing surface (931i, 931j 932i, 932j),
On the other hand, the parts (921a) of the struts (921) introduced into the crossbars and / or wedges (1044, 1044 ') carried on the parts (1021a) are also mutually connected. 21. Held frame according to any one of claims 14 to 20, characterized in that it comprises a complementary bearing surface (921i, 921j). Said mechanical means comprises at least one control screw; includes a (945 1045), the longitudinal axis of the screw the cross bar _(922,1022); the _{(Y 922 -Y 922 'Y 1022} -Y' 1022) In the direction perpendicular to
And with respect to the main part (921b; 1021b) of the strut (921; 1021), outside the portion (921a, 1021a) introduced into the crossbar,
Device according to any one of claims 14 to 21, characterized in that it is offset.   The hoop (1140) surrounds the end (1128a) of the main part (1122a) of the crossbar (1122) and accommodates and secures the part (1121a) of the strut (1121) at (1140a). 23. Device according to any one of the preceding claims, characterized in that the tubular part (1140b) for extending extends beyond this end.   24. The apparatus according to any one of claims 1 to 23, wherein the hoop is crimped around the crossbar at a high temperature.   25. A device according to any one of the preceding claims, characterized in that the crossbar (922) comprises at least one flexible slot (949).   The tubular portion (935) at the end of the generally convex profile is of a substantially rectangular cross section and the slot (949) is made in the long side (933; 934) of the cross section. 26. The apparatus of claim 25.   A configuration in which a substantially convex profile of the portion (1035) at the end of the crossbar is obtained by adding a filling element (1050) between the portion (1035) and the hoop (1040). 27. Apparatus according to any one of claims 1 to 26, characterized in that   A loom (M) comprising at least one heald frame (2) according to at least one of the preceding claims.

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