US20050241718A1 - Mounting frame and loom fitted with said mounting frame - Google Patents
Mounting frame and loom fitted with said mounting frame Download PDFInfo
- Publication number
- US20050241718A1 US20050241718A1 US10/522,817 US52281705A US2005241718A1 US 20050241718 A1 US20050241718 A1 US 20050241718A1 US 52281705 A US52281705 A US 52281705A US 2005241718 A1 US2005241718 A1 US 2005241718A1
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- United States
- Prior art keywords
- cross
- bar
- frame according
- hoop
- strut
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C9/00—Healds; Heald frames
- D03C9/06—Heald frames
- D03C9/0666—Connection of frame parts
- D03C9/0675—Corner connections between horizontal rods and side stays
Definitions
- the present invention relates to a heald frame and to a weaving loom equipped with such a frame.
- heald frames intended to be controlled in a reciprocating vertical movement thanks to an appropriate device, such as a weave system or a dobby. It is known to make a heald frame by reversibly assembling two struts and two cross-bars, the struts being substantially vertical when the heald frame is in configuration of use, while the cross-bars are substantially horizontal.
- FR-A-2 681 614 discloses a dismountable elastic junction device which may be used in an angle of a heald frame, i.e. in the zone of junction between a cross-bar and a strut.
- a protuberance made on a strut is intended to be wedged between two jaws fast with two rigid pieces forming heads intended to be wedged inside a cross-bar.
- the invention aims at solving the problems of the prior devices by proposing a robust heald frame capable of being mounted on a loom operating at high speed.
- the invention relates to a heald frame for weaving loom, this frame being obtained by assembling two struts with two cross-bars each provided with a heald-carrier rod in one piece with the corresponding cross-bar or added thereon over substantially the whole of its length, at least one of the extremities of at least one of the cross-bars being equipped with at least one member for locking a part of an adjacent strut, inside an end portion of the cross-bar which forms a zone of junction with this strut.
- This frame is characterized in that the aforementioned end portion comprises a part whose external transverse profile is substantially convex and at least one hoop which surrounds the aforementioned part and the locking member, in order to resist a locking effort exerted by the latter.
- the hoop which may be formed by a tubular sleeve or a bent sheet, makes it possible to improve the resistance of the cross-bar to the forces transmitted by the adjacent strut and resulting from the locking of the aforementioned part of that strut. This consequently limits the risks of deterioration of the cross-bar at the level of this zone of junction. In other words, the mechanical efforts undergone by the cross-bar in the zone of junction are reduced by the hoop, this improving the overall mechanical characteristics of the heald frame.
- the invention takes profit from the fact that the substantially convex profile of the zone of junction allows it to be associated with a hoop, while such would not be the case if this profile presented an opening or a cavity, for example for catching the extremities of the healds.
- the invention also relates to a weaving loom equipped with at least one heald frame as described hereinabove.
- a weaving loom equipped with at least one heald frame as described hereinabove.
- Such a loom may operate at a high speed and is more reliable than those of the prior art.
- FIG. 1 schematically shows a weaving loom according to the invention.
- FIG. 2 is a partial, exploded section of a heald frame of the loom of FIG. 1 at the level of the respective extremities of one of its struts and of one of its cross-bars.
- FIG. 3 is a section along line III-III in FIG. 2 .
- FIG. 4 is a section, on a smaller scale, of the upper and lower parts of a cross-bar of a heald frame in accordance with a second form of embodiment of the invention.
- FIG. 5 is a section along line V-V in FIG. 4 .
- FIG. 6 is a section similar to the upper part of FIG. 5 for a frame in accordance with a third form of embodiment.
- FIG. 7 is a section similar to FIG. 4 for a frame in accordance with a fourth form of embodiment of the invention.
- FIG. 8 is a section similar to FIG. 4 for a frame in accordance with a fifth form of embodiment of the invention.
- FIG. 9 is a section similar to FIG. 4 for a frame in accordance with a sixth form of embodiment of the invention.
- FIG. 10 is a section similar to FIG. 4 for a frame in accordance with a seventh form of embodiment of the invention.
- FIG. 11 is a side view of the extremity of a cross-bar of a heald frame in accordance with an eighth form of embodiment of the invention.
- FIG. 12 is a view similar to FIG. 11 for a heald frame in accordance with a ninth form of embodiment of the invention.
- FIG. 13 is a view similar to detail XIII in FIG. 2 , for a frame in accordance with a tenth form of embodiment of the invention.
- FIG. 14 is a view similar to FIG. 2 for a frame in accordance with an eleventh form of embodiment of the invention.
- FIG. 15 is a section along line XV-XV in FIG. 14 .
- FIG. 16 is a section similar to FIG. 15 for a heald frame in accordance with a twelfth form of embodiment of the invention.
- FIG. 17 is a partial section along line XVII-XVII in FIG. 16 .
- FIG. 18 is a view similar to FIG. 2 for a frame in accordance with a thirteenth form of embodiment of the invention.
- a dobby 1 is intended to drive a heald frame 2 of a weaving loom M in a reciprocating vertical movement represented by arrows F 1 and F 1 ′.
- an arm 1 a for actuating the dobby 1 is coupled by connecting rods and pivoting levers to each heald frame 2 .
- Each frame 2 is formed by the assembly of two struts 21 and of two cross-bars 22 .
- the struts 21 extend substantially in a direction parallel to the direction Z-Z′ of vertical oscillation of the frames 2
- the cross-bars 22 extend substantially in a direction Y-Y′ perpendicular to the direction Z-Z′ and substantially horizontal when the loom M is in configuration of use.
- the strut 21 is provided with a protuberance 21 a intended to be introduced between two jaws 23 and 24 each fast with a solid piece 25 , 26 respectively, articulated on each other inside the extremity 28 of the cross-bar 22 .
- the cross-bar 22 is hollow and constituted by a tube of substantially rectangular cross section from which there extends, over substantially the whole of its length, a tab 29 forming a heald-carrier rod on which healds 30 for guiding the warp yarns of the loom M may be hooked.
- the cross-bar 22 is advantageously filled with a rigidifying and/or sound-proofing material.
- the lower cross-bar is likewise provided with a heald-carrier rod.
- the rod 29 is in one piece with the cross-bar 22 and connected thereto, over essentially the whole of its length, by a web 29 c.
- 31 and 32 respectively denote the upper and lower short sides of the tubular part of the cross-bar 22 .
- 33 and 34 respectively denote the lateral long sides of this part.
- 35 denotes the tubular part of the extremity 28 in which the pieces 25 and 26 are introduced. This part 35 is separated from the terminal part 29 a of the heald-carrier rod 29 by a groove 36 which extends, from the terminal face 28 a of the extremity 28 , in a direction Y 36 -Y′ 36 parallel to a longitudinal axis Y 22 -Y′ 22 of the cross-bar 22 .
- Assembly of elements 21 and 22 takes place by immobilizing the protuberance 21 a between the jaws 23 and 24 thanks to the tightening of a manoeuvring screw 37 . Due to the jaws 23 and 24 approaching each other, represented by arrows F 2 and F′ 2 , the pieces 25 and 26 exert on the sides 31 and 32 a locking effort represented by arrows F 3 and F′ 3 . This effort is exerted through an element 27 made of elastomer disposed under stress between each piece 25 or 26 and the nearest short side 31 or 32 . This elastomeric element is in accordance with the technical teaching of FR-A-2 681 614.
- a hoop 40 is disposed around this part 35 , being partially engaged in the groove 36 .
- This hoop 40 is constituted by a sheet-metal plate bent around the part 35 and immobilized therearound by cooperation of shapes and thanks to two screws 41 screwed in tapped orifices 42 a of a counter-plate 42 introduced inside the part 35 .
- the screws 41 also pass through a plate 43 for distributing over the length of the hoop 40 an effort F 5 of tightening of its respective edges 40 a and 40 b on the side 31 of the part 35 .
- Part 35 and hoop 40 together form an end portion P of the cross-bar 22 which contains the locking means 25 and 26 and resists the locking effort F 3 and F′ 3 .
- the hoop 40 may efficiently perform its role of reinforcement of the part 35 , as this part has an external transverse profile, constituted by the external surfaces of the sides 31 to 34 , which is convex and therefore adapted to the use of such a hoop.
- this part has an external transverse profile, constituted by the external surfaces of the sides 31 to 34 , which is convex and therefore adapted to the use of such a hoop.
- the groove 36 allows a suitable positioning of the hoop 40 around the part 35 .
- the groove 36 has a length L 36 greater than or equal to the width 140 of the hoop 40 , part 29 a of the rod 29 being in overhang over length L 36 .
- the length L 36 is slightly greater than the width l 40 .
- FIGS. 4 and 5 elements similar to those of the first embodiment bear identical references increased by 100.
- the cross-bar 122 of this embodiment is equipped with a hoop 140 which surrounds a part 135 of convex transverse profile of its extremity 128 .
- 131 and 132 respectively denote the short sides, 133 and 134 the long sides of the part 135 .
- This embodiment differs from the preceding one essentially in that the immobilization of the hoop 140 around the part 135 takes place by blocking two wedges 144 and 144 ′ connected by a screw 145 and adapted to cooperate with a complementary wedge 146 wedged against the inner surface 140 c of the hoop 140 which is constituted by a tubular sleeve made of steel.
- 144 a , 144 ′ a , 146 a and 146 ′ a respectively denote the wedging surfaces provided on the wedges 144 , 144 ′ and 146 , surface 146 ′ a being the one of the wedge 146 intended to cooperate with the surface 144 ′ a.
- the end portion P formed by parts 135 and 140 may contain locking means, such as that of the first embodiment.
- the rod 129 for hooking the healds of this second embodiment is added on the principal tubular part 135 .
- the short side 132 of the part 135 is provided with a groove 138 in which may be inserted a ring 129 b fast with the rod 129 and whose section is complementary of that of the groove 138 , this making it possible to suspend the rod 129 from part 135 .
- 129 c denotes the junction web between the ring 129 b and the part of the rod 129 on which the healds are hooked. As previously, this web extends over substantially the whole length of the cross-bar 122 and is interrupted at the level of a terminal part 129 a of the rod 129 , this forming a groove 136 allowing the hoop 140 to be positioned.
- the hoop 140 may be rounded above the complementary wedge 146 .
- the cross-bar 222 of this embodiment is provided with a surface 222 b inclined with respect to its longitudinal axis Y 222 -Y′ 222 and intended to cooperate with the inclined surface 244 a of a wedge 244 associated by a screw 245 with a stop 247 arranged against a lateral edge 240 d of a hoop 240 in the form of a tubular metal sleeve.
- the traction exerted by the screw 245 on the wedge 244 makes it possible to tension the hoop 240 and thus to immobilize it around a part 235 of convex profile of the cross-bar 22 which forms therewith an end portion P of the cross-bar 222 .
- a hoop 340 is arranged around a part 335 of a cross-bar 322 and forms therewith an end portion P.
- a wedge 344 is provided with an active surface 344 a which cooperates with an active surface 340 c constituted by the inner face of the hoop 340 , this face being inclined with respect to a longitudinal axis Y 322 /Y′ 322 of the cross-bar 322 .
- the displacement of the wedge 344 is controlled by a screw traversing a stop 347 disposed against a lateral edge 340 d of the hoop 340 .
- the hoop 440 of this embodiment is immobilized, by a layer of glue 448 , around a part 435 of a cross-bar 422 with which it constitutes an end portion P.
- this layer of glue 448 is sufficiently thick for a wedge 444 to be able to be inserted in the direction of arrow F 6 in FIG. 9 , this having the effect of positioning the hoop 440 and of ensuring a suitable distribution of the glue.
- a hoop 540 is immobilized around a part 535 of a cross-bar 522 by means of a screw 541 which traverses an orifice 540 e made in the hoop 540 and which is screwed in a upper short side 531 of the part 535 .
- a plurality of screws of the type such as screw 541 may be used.
- An end portion P of the cross-bar 522 is formed by the elements 535 and 540 .
- the longitudinal shape of a hoop 640 or 740 may be adapted to improve the progressive nature of the transmission of the efforts between the hoop and the cross-bar.
- the edge 640 d of the hoop 640 which is opposite the terminal face 628 a of the cross-bar 622 , may have a pointed shape on one or the other of the sides of this cross-bar, or on both.
- this edge 740 d may have a hollow shape.
- a hoop 840 is immobilized around a part 835 of the extremity 828 of a cross-bar 822 of a heald frame.
- the part 835 has a substantially convex external transverse profile, while the cross-bar 822 is equipped with a heald-carrier rod 829 .
- a groove 836 is formed between the part 835 and the rod 829 for the passage of the hoop 840 which is constituted by a plate of sheet metal bent around the part 835 , like the hoop 40 of the first embodiment.
- the groove 836 does not open out on the terminal face 828 a of the extremity 828 but is formed by an oblong slot whose major axis X 836 -Y′ 836 is substantially parallel to the longitudinal axis Y 822 -Y′ 822 of the cross-bar 822 .
- the frame of this embodiment comprises a strut 921 provided with a protuberance 921 a intended to be introduced inside an extremity 928 of a cross-bar 922 .
- the cross-bar 922 is hollow, at least in its end zone, and constituted in this zone by a tube of substantially rectangular cross section from which a rod 929 forming a heald-carrier rod extends, over substantially the whole of its length, on which healds 930 for guiding the warp yarns of the loom M may be hooked.
- the lower cross-bar is likewise provided with a heald-carrier rod.
- 931 and 932 respectively denote the upper and lower short sides of the tubular part of the cross-bar 922 .
- 933 and 934 respectively denote the lateral long sides of this part.
- 935 denotes the tubular part of the extremity 928 in which the protuberance 921 a is introduced.
- This part 935 is separated from the terminal part 929 a of the heald-carrier rod 929 by a groove 936 which extends, from the terminal face 928 a of the extremity 928 , in a direction Y 936 -Y′ 936 parallel to a longitudinal axis Y 922 -Y′ 922 of the cross-bar 922 .
- a hoop 940 is disposed around the part 935 , being partially engaged in the groove 936 . Elements 935 and 940 together form an end portion P of the cross-bar 922 .
- the hoop 940 is tensioned around the part 935 of the cross-bar 922 thanks to two wedges 944 and 944 ′ connected by a screw 945 and adapted to cooperate with a complementary wedge 946 wedged against the inner surface 940 c of the hoop 940 .
- 944 a , 944 ′ a , 946 a and 946 ′ a respectively denote the surfaces or ramps for slide provided on the wedges 944 , 944 ′ and 946 , surface 946 ′ a being that of the wedge 946 intended to cooperate with surface 944 ′ a .
- Surfaces 944 a and 944 ′ a are inclined with respect to the longitudinal axis of the screw 945 , i.e. to the longitudinal axis Y 922 -Y′ 922 , by two angles ⁇ 1 and ⁇ 2 of opposite directions and of the same absolute value.
- Each long side 933 and 934 of the part 935 is provided with a supple slot 949 which allows introduction of the protuberance 921 a in the part 935 then tightening of this part around this protuberance, when the wedges 944 and 944 ′ approach each other.
- the mechanical members 944 to 946 make it possible, by themselves, both to immobilize the protuberance 921 a in the part 935 and to tension the hoop 940 around this part.
- the screwing of the screw 945 in the wedge 944 has the effect of bringing closer to each other the wedges 944 and 944 ′, of which the surfaces or ramps 944 a and 946 ′ a slide against the surfaces or ramps 946 a and 946 ′ a , this having the effect of displacing the wedges in the direction of the rod 929 .
- the relative slide of the wedges 944 and 944 ′, on the one hand, and 946 , on the other hand, has the effect of transmitting to the hoop an effort F 11 of tensioning of this element.
- the effort F 11 is transferred to the level of the part of the hoop traversing the groove 936 , this having the effect of tightening the protuberance 921 a by the combination of the efforts F 10 and F 11 .
- the geometry of the strut 921 is particularly simple as the protuberance 921 a is in one piece with a principal part 921 b of the strut 921 which extends parallel to the direction Z-Z′ of oscillations of the frame.
- the hoop 940 may perform its role of reinforcement of the part 935 efficiently, as this part has an external transverse profile constituted by the external surfaces of the sides 931 to 934 , which is convex and therefore adapted for the use of such a hoop.
- the protuberance 921 a is provided, at the level of its respective upper and lower sides, with two pointed parts 921 g and 921 h intended to penetrate in hollow housings 932 g and 931 h respectively provided in the short sides 932 and 931 of the part 935 .
- Parts 921 g and 921 h are each defined between two V-surfaces 921 i and 921 j which are substantially planar and parallel to axis Y 922 -Y′ 922 . These surfaces are inclined, in the plane of FIG. 3 , by an angle ⁇ of the order of 45° with respect to a plane P′ 2 perpendicular to the principal plane P 2 of the frame 2 .
- the angle ⁇ may, in practice, have a value included between 20 and 70°.
- the upper and lower sides of the protuberance 921 a are of substantially triangular section. In a variant, only one of these sides may have such a geometry.
- the internal geometry of the cross-bar 922 is adapted to that of the protuberance 921 a and housings 932 g and 931 h are defined between two inclined surfaces, 932 i and 932 i and 931 i and 931 j respectively, forming the same angle ⁇ with the plane P′ 1 .
- the bearing between the cross-bar 922 and the element 921 a that it contains occurs via two sets of surfaces 921 i , 931 i and 932 i , on the one hand, and 921 j , 931 j , and 932 j on the other hand, distributed on either side of the plane P 2 and inclined with respect thereto.
- the surfaces 921 i and 921 j are oblique with respect to one another, in the same way as surfaces 931 i and 931 j , on the one hand, 932 i and 932 j , on the other hand.
- the strut 1021 of this embodiment likewise comprises a protuberance 1021 a in one piece with an elongated part 1021 b , this protuberance being intended to be inserted in a part 1035 of the extremity 1028 of a cross-bar 1022 .
- a hoop 1040 is disposed around the part 1035 and forms therewith an end portion P.
- the mechanical means for immobilizing the protuberance and for tensioning the hoop are not disposed between the part 1035 and the hoop, as in the first embodiment, but inside the part 1035 . More precisely, two wedges 1044 and 1044 ′ are controlled, in a movement of displacement parallel to a longitudinal axis Y 1022 -Y′ 1022 of the cross-bar 1022 , by a screw 1045 .
- 1044 a and 1044 ′ a respectively denote the surfaces of these wedges 1044 and 1044 ′ forming ramp. These surfaces cooperate respectively with surfaces 1021 c and 1021 d forming ramp provided on the protuberance 1021 a , with angles of inclination ⁇ 1 and ⁇ 2 , with respect to the longitudinal axis of the screw 1045 and to axis Y 1022 -Y′ 1022 , of opposite direction and with the same absolute values.
- the protuberance 1021 is also provided with a rod 1021 e provided with an orifice 1021 f for passage of the screw 1045 .
- the substantially convex nature of the profile of part 1035 may be obtained by integrating a filling element 1050 in a hollow part 1022 a of the cross-bar 1022 .
- the filling element may be connected with the hoop 1040 before the latter is positioned around the part 1035 .
- the screw 945 is offset, perpendicularly to the axis Y 922 -Y′ 922 and with respect to part 921 b of the strut 921 , beyond the protuberance 921 a .
- the screw 1045 is offset with respect to part 1021 b . In this way, these screws are easy to manoeuvre without it being necessary to pierce the principal parts of the struts.
- the metallic strut 1121 of this embodiment is provided with a tenon or protuberance 1121 a in one piece with the principal part 1121 b of the strut.
- the cross-bar 1122 of this embodiment comprises a principal part 1122 a advantageously made of synthetic material.
- This part 1122 a is in one piece with a heald-carrier rod 1129 to which it is connected by a web 1129 c .
- the cross-bar 1122 also comprises a metal hoop 1140 which is glued around one extremity 1128 a of the part 1122 a .
- 1148 denotes the layer of glue interposed between the elements 1140 and 1128 a .
- the hoop 1140 extends in the direction of the principal part 1121 b of the strut 1121 beyond the extremity 1128 a .
- 1140 a denotes the part of the hoop surrounding the extremity 1128 a of the synthetic portion 1122 a of the cross-bar 1122 .
- 1140 b denotes the part of the hoop 1140 which extends beyond the part 1128 a and which defines a tubular portion 1135 of the cross-bar 1122 provided to receive the tenon 1121 a .
- the elements 1128 a and 1140 together form an end portion P of the cross-bar 1122 .
- a notch 1136 is made between the principal part 1122 a of the cross-bar 1122 and the heald-carrier rod by means of a localized recess of the web 1129 c .
- the heald-carrier rod 1129 is in overhang over a part of its length.
- a nut 1126 is immobilized on an internal face of the part 1140 b of the hoop and is traversed by the stem 1125 a of a locking screw 1125 .
- the stem 1125 a and the nut 1126 constitute means for locking the tenon 1121 a , located inside the part 1140 b of the hoop 1140 .
- This embodiment presents the particular advantage that the dismountable link between the tenon 1121 a and the hoop 1140 employs only pieces of high resistance in abutment against one another, which are advantageously made of metal.
- the whole interior volume of the hoop 1140 is available for positioning the tenon 1121 a whose height and thickness may be increased with respect to those of the corresponding parts of the frames of the other embodiments.
- the hoop may be immobilized on the cross-bar by hot-crimping.
- the hoop remains in place on the cross-bar when the frame is dismantled, this making it possible, in particular, for it to protect the extremities of those parts of this cross-bar which are advantageously made of synthetic material.
- the heald-carrier rod remains fast with the cross-bar, this implying that the healds used are of “open” type.
- the invention has been represented with mechanical means comprising two wedges cooperating for the immobilization of the strut and the tensioning of the hoop. However, it is applicable with one sole wedge provided with one sole effort transmission ramp.
- the invention is applicable independently of the material used for the parts constituting the frames, particularly the struts and the cross-bars.
- it is applicable to frames made of light alloy such as aluminium, and to frames of composite materials, with an organic resin and carbon- or glass-reinforced fibres.
- the hoops may be made of metal or of composite material.
- the invention is applicable independently of the geometry of the heald-carrier rods of the cross-bars which may have different shapes adapted to that of the extremities of the healds.
- inclined surfaces similar to surfaces 921 i , 921 j , 931 i , 931 j , etc. . . . of the eleventh embodiment may be provided in the twelfth embodiment at the level of the protuberance 1021 a , between the cross-bar 1022 and this protuberance, at the level of the lower short side 1032 , and/or between the cross-bar 1022 and the wedges 1044 and 1044 ′, at the level of the upper short side 1031 .
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Abstract
The frame, which is obtained by assembling two struts (21) with two cross-bars (22) each of which is provided with a heald-carrier rod (29), comprises at least one hoop (40) surrounding a tubular extremity (28) of said cross-bar (22) in an area in which it is joined to the adjacent strut (21) and an area in which at least one locking member (25, 26) of part (21 a) of said strut is received. The area of junction is created in part (35) of the extremity (28) provided with an external transverse profile which is essentially convex. The hoop is provided in order to resist a locking effort (F3, F′3) exerted by the locking member (23, 24).
Description
- The present invention relates to a heald frame and to a weaving loom equipped with such a frame.
- It is known to equip a weaving loom with heald frames intended to be controlled in a reciprocating vertical movement thanks to an appropriate device, such as a weave system or a dobby. It is known to make a heald frame by reversibly assembling two struts and two cross-bars, the struts being substantially vertical when the heald frame is in configuration of use, while the cross-bars are substantially horizontal.
- FR-A-2 681 614 discloses a dismountable elastic junction device which may be used in an angle of a heald frame, i.e. in the zone of junction between a cross-bar and a strut. In this device, a protuberance made on a strut is intended to be wedged between two jaws fast with two rigid pieces forming heads intended to be wedged inside a cross-bar. Taking into account the efforts of acceleration and of deceleration undergone by a heald frame, such a junction device induces very considerable stresses on the cross-bar, which may lead to a tear of the lateral walls of such a cross-bar.
- Similar problems are raised with the device known from DE-A-33 08 371 in which a link of rigid type is made between a strut and a cross-bar of a heald frame, by means of a tensioning of the lateral faces of the cross-bar.
- The problems identified hereinabove are more and more crucial insofar as it is desired that the weaving looms operate at higher and higher speeds, this implying that the heald frames be lightened to a maximum in order to reduce their inertia, by thus reducing the mechanical resistance of the cross-bars. A contrario, the mechanical links between the struts and the cross-bars must be more and more robust in order to withstand the more and more violent accelerations and decelerations to which these mobile parts are subjected.
- The invention aims at solving the problems of the prior devices by proposing a robust heald frame capable of being mounted on a loom operating at high speed.
- In this spirit, the invention relates to a heald frame for weaving loom, this frame being obtained by assembling two struts with two cross-bars each provided with a heald-carrier rod in one piece with the corresponding cross-bar or added thereon over substantially the whole of its length, at least one of the extremities of at least one of the cross-bars being equipped with at least one member for locking a part of an adjacent strut, inside an end portion of the cross-bar which forms a zone of junction with this strut. This frame is characterized in that the aforementioned end portion comprises a part whose external transverse profile is substantially convex and at least one hoop which surrounds the aforementioned part and the locking member, in order to resist a locking effort exerted by the latter.
- Thanks to the invention, the hoop, which may be formed by a tubular sleeve or a bent sheet, makes it possible to improve the resistance of the cross-bar to the forces transmitted by the adjacent strut and resulting from the locking of the aforementioned part of that strut. This consequently limits the risks of deterioration of the cross-bar at the level of this zone of junction. In other words, the mechanical efforts undergone by the cross-bar in the zone of junction are reduced by the hoop, this improving the overall mechanical characteristics of the heald frame. The invention takes profit from the fact that the substantially convex profile of the zone of junction allows it to be associated with a hoop, while such would not be the case if this profile presented an opening or a cavity, for example for catching the extremities of the healds.
- Other advantageous aspects of the invention, which may be associated with one another in any technically feasible combination, will be apparent from the accompanying dependent claims.
- The invention also relates to a weaving loom equipped with at least one heald frame as described hereinabove. Such a loom may operate at a high speed and is more reliable than those of the prior art.
- The invention will be more readily understood and other advantages will appear more clearly in the light of the following description of a weaving loom and of a plurality of heald frames in accordance with its principle, given solely by way of example and made with reference to the accompanying drawings, in which:
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FIG. 1 schematically shows a weaving loom according to the invention. -
FIG. 2 is a partial, exploded section of a heald frame of the loom ofFIG. 1 at the level of the respective extremities of one of its struts and of one of its cross-bars. -
FIG. 3 is a section along line III-III inFIG. 2 . -
FIG. 4 is a section, on a smaller scale, of the upper and lower parts of a cross-bar of a heald frame in accordance with a second form of embodiment of the invention. -
FIG. 5 is a section along line V-V inFIG. 4 . -
FIG. 6 is a section similar to the upper part ofFIG. 5 for a frame in accordance with a third form of embodiment. -
FIG. 7 is a section similar toFIG. 4 for a frame in accordance with a fourth form of embodiment of the invention. -
FIG. 8 is a section similar toFIG. 4 for a frame in accordance with a fifth form of embodiment of the invention. -
FIG. 9 is a section similar toFIG. 4 for a frame in accordance with a sixth form of embodiment of the invention. -
FIG. 10 is a section similar toFIG. 4 for a frame in accordance with a seventh form of embodiment of the invention. -
FIG. 11 is a side view of the extremity of a cross-bar of a heald frame in accordance with an eighth form of embodiment of the invention. -
FIG. 12 is a view similar toFIG. 11 for a heald frame in accordance with a ninth form of embodiment of the invention. -
FIG. 13 is a view similar to detail XIII inFIG. 2 , for a frame in accordance with a tenth form of embodiment of the invention. -
FIG. 14 is a view similar toFIG. 2 for a frame in accordance with an eleventh form of embodiment of the invention. -
FIG. 15 is a section along line XV-XV inFIG. 14 , -
FIG. 16 is a section similar toFIG. 15 for a heald frame in accordance with a twelfth form of embodiment of the invention. -
FIG. 17 is a partial section along line XVII-XVII inFIG. 16 , and -
FIG. 18 is a view similar toFIG. 2 for a frame in accordance with a thirteenth form of embodiment of the invention. - In
FIG. 1 , adobby 1 is intended to drive a heald frame 2 of a weaving loom M in a reciprocating vertical movement represented by arrows F1 and F1′. To that end, an arm 1 a for actuating thedobby 1 is coupled by connecting rods and pivoting levers to each heald frame 2. - Each frame 2 is formed by the assembly of two
struts 21 and of twocross-bars 22. Thestruts 21 extend substantially in a direction parallel to the direction Z-Z′ of vertical oscillation of the frames 2, while thecross-bars 22 extend substantially in a direction Y-Y′ perpendicular to the direction Z-Z′ and substantially horizontal when the loom M is in configuration of use. - In the following description, the junction between the left-
hand strut 21 and theupper cross-bar 22 of a frame 2 will be studied in greater detail. It is understood that the assembly of this cross-bar with the right-hand strut 21 or of the lower cross-bar with one or the other of thestruts 21 may incorporate the same structural and functional characteristics. - As is more particularly apparent from
FIG. 2 , thestrut 21 is provided with aprotuberance 21 a intended to be introduced between twojaws solid piece extremity 28 of thecross-bar 22. To that end, thecross-bar 22 is hollow and constituted by a tube of substantially rectangular cross section from which there extends, over substantially the whole of its length, atab 29 forming a heald-carrier rod on which healds 30 for guiding the warp yarns of the loom M may be hooked. - In its median part, the
cross-bar 22 is advantageously filled with a rigidifying and/or sound-proofing material. - The lower cross-bar is likewise provided with a heald-carrier rod.
- The
rod 29 is in one piece with thecross-bar 22 and connected thereto, over essentially the whole of its length, by aweb 29 c. - 31 and 32 respectively denote the upper and lower short sides of the tubular part of the cross-bar 22.33 and 34 respectively denote the lateral long sides of this part. 35 denotes the tubular part of the
extremity 28 in which thepieces part 35 is separated from theterminal part 29 a of the heald-carrier rod 29 by agroove 36 which extends, from theterminal face 28 a of theextremity 28, in a direction Y36-Y′36 parallel to a longitudinal axis Y22-Y′22 of thecross-bar 22. - Assembly of
elements protuberance 21 a between thejaws manoeuvring screw 37. Due to thejaws pieces sides 31 and 32 a locking effort represented by arrows F3 and F′3. This effort is exerted through anelement 27 made of elastomer disposed under stress between eachpiece short side - In order to be able efficiently to resist this effort of locking without risk of tearing the
part 35, ahoop 40 is disposed around thispart 35, being partially engaged in thegroove 36. Thishoop 40 is constituted by a sheet-metal plate bent around thepart 35 and immobilized therearound by cooperation of shapes and thanks to twoscrews 41 screwed in tappedorifices 42 a of acounter-plate 42 introduced inside thepart 35. Thescrews 41 also pass through aplate 43 for distributing over the length of thehoop 40 an effort F5 of tightening of itsrespective edges side 31 of thepart 35. -
Part 35 andhoop 40 together form an end portion P of thecross-bar 22 which contains the locking means 25 and 26 and resists the locking effort F3 and F′3. - The
hoop 40 may efficiently perform its role of reinforcement of thepart 35, as this part has an external transverse profile, constituted by the external surfaces of thesides 31 to 34, which is convex and therefore adapted to the use of such a hoop. In effect, if the hoop were disposed both around thepart 35 and theterminal part 29 a of therod 29, the hooking of the healds in this zone would not be possible and therod 29 might be crushed due to the existence of a cavity or a hollow between the latter and theshort side 32 of thepart 35. - In this way, the
groove 36 allows a suitable positioning of thehoop 40 around thepart 35. Thegroove 36 has a length L36 greater than or equal to thewidth 140 of thehoop 40,part 29 a of therod 29 being in overhang over length L36. In practice, the length L36 is slightly greater than the width l40. - In the second form of embodiment of the invention shown in
FIGS. 4 and 5 , elements similar to those of the first embodiment bear identical references increased by 100. The cross-bar 122 of this embodiment is equipped with ahoop 140 which surrounds apart 135 of convex transverse profile of itsextremity 128. 131 and 132 respectively denote the short sides, 133 and 134 the long sides of thepart 135. - This embodiment differs from the preceding one essentially in that the immobilization of the
hoop 140 around thepart 135 takes place by blocking twowedges screw 145 and adapted to cooperate with acomplementary wedge 146 wedged against the inner surface 140 c of thehoop 140 which is constituted by a tubular sleeve made of steel. - 144 a, 144′a, 146 a and 146′a respectively denote the wedging surfaces provided on the
wedges surface 146′a being the one of thewedge 146 intended to cooperate with thesurface 144′a. - The end portion P formed by
parts - Unlike the first embodiment where
parts rod 129 for hooking the healds of this second embodiment is added on the principaltubular part 135. To that end, theshort side 132 of thepart 135 is provided with agroove 138 in which may be inserted aring 129 b fast with therod 129 and whose section is complementary of that of thegroove 138, this making it possible to suspend therod 129 frompart 135. 129 c denotes the junction web between thering 129 b and the part of therod 129 on which the healds are hooked. As previously, this web extends over substantially the whole length of the cross-bar 122 and is interrupted at the level of aterminal part 129 a of therod 129, this forming agroove 136 allowing thehoop 140 to be positioned. - As shown in
FIG. 6 , thehoop 140 may be rounded above thecomplementary wedge 146. - In the fourth form of embodiment of the invention shown in
FIG. 7 , elements similar to those of the first embodiment bear identical references increased by 200. The cross-bar 222 of this embodiment is provided with asurface 222 b inclined with respect to its longitudinal axis Y222-Y′222 and intended to cooperate with theinclined surface 244 a of awedge 244 associated by ascrew 245 with astop 247 arranged against alateral edge 240 d of ahoop 240 in the form of a tubular metal sleeve. The traction exerted by thescrew 245 on thewedge 244 makes it possible to tension thehoop 240 and thus to immobilize it around apart 235 of convex profile of the cross-bar 22 which forms therewith an end portion P of the cross-bar 222. - In the fifth form of embodiment shown in
FIG. 8 , elements similar to those of the first embodiment of the invention bear identical references increased by 300. Ahoop 340 is arranged around apart 335 of a cross-bar 322 and forms therewith an end portion P. Awedge 344 is provided with anactive surface 344 a which cooperates with anactive surface 340 c constituted by the inner face of thehoop 340, this face being inclined with respect to a longitudinal axis Y322/Y′322 of the cross-bar 322. The displacement of thewedge 344 is controlled by a screw traversing astop 347 disposed against alateral edge 340 d of thehoop 340. - In the sixth embodiment of the invention shown in
FIG. 9 , elements similar to those of the first embodiment bear identical references increased by 400. Thehoop 440 of this embodiment is immobilized, by a layer ofglue 448, around apart 435 of a cross-bar 422 with which it constitutes an end portion P. At the level of the uppershort side 431 of thepart 435, this layer ofglue 448 is sufficiently thick for awedge 444 to be able to be inserted in the direction of arrow F6 inFIG. 9 , this having the effect of positioning thehoop 440 and of ensuring a suitable distribution of the glue. - In the seventh form of embodiment of the invention shown in
FIG. 10 , elements similar to those of the first embodiment bear identical references increased by 500. Ahoop 540 is immobilized around apart 535 of a cross-bar 522 by means of ascrew 541 which traverses anorifice 540 e made in thehoop 540 and which is screwed in a uppershort side 531 of thepart 535. In a variant, a plurality of screws of the type such asscrew 541 may be used. An end portion P of the cross-bar 522 is formed by theelements - As shown respectively in
FIGS. 11 and 12 , the longitudinal shape of ahoop edge 640 d of thehoop 640, which is opposite theterminal face 628 a of the cross-bar 622, may have a pointed shape on one or the other of the sides of this cross-bar, or on both. Inversely, and as shown inFIG. 12 , thisedge 740 d may have a hollow shape. These geometries ofedges - In the tenth form of embodiment of the invention shown in
FIG. 13 , elements similar to those of the first embodiment bear identical references increased by 800. Ahoop 840 is immobilized around apart 835 of theextremity 828 of a cross-bar 822 of a heald frame. Thepart 835 has a substantially convex external transverse profile, while the cross-bar 822 is equipped with a heald-carrier rod 829. Agroove 836 is formed between thepart 835 and therod 829 for the passage of thehoop 840 which is constituted by a plate of sheet metal bent around thepart 835, like thehoop 40 of the first embodiment. Thegroove 836 does not open out on theterminal face 828 a of theextremity 828 but is formed by an oblong slot whose major axis X836-Y′836 is substantially parallel to the longitudinal axis Y822-Y′822 of the cross-bar 822. - In the eleventh form of embodiment of the invention shown in
FIGS. 14 and 15 , elements similar to those of the first embodiment bear identical references increased by 900. The frame of this embodiment comprises astrut 921 provided with a protuberance 921 a intended to be introduced inside anextremity 928 of a cross-bar 922. - To that end, the cross-bar 922 is hollow, at least in its end zone, and constituted in this zone by a tube of substantially rectangular cross section from which a
rod 929 forming a heald-carrier rod extends, over substantially the whole of its length, on whichhealds 930 for guiding the warp yarns of the loom M may be hooked. - The lower cross-bar is likewise provided with a heald-carrier rod.
- 931 and 932 respectively denote the upper and lower short sides of the tubular part of the cross-bar 922. 933 and 934 respectively denote the lateral long sides of this part. 935 denotes the tubular part of the
extremity 928 in which the protuberance 921 a is introduced. Thispart 935 is separated from the terminal part 929 a of the heald-carrier rod 929 by agroove 936 which extends, from theterminal face 928 a of theextremity 928, in a direction Y936-Y′936 parallel to a longitudinal axis Y922-Y′922 of the cross-bar 922. - A
hoop 940 is disposed around thepart 935, being partially engaged in thegroove 936.Elements - The
hoop 940 is tensioned around thepart 935 of the cross-bar 922 thanks to twowedges screw 945 and adapted to cooperate with acomplementary wedge 946 wedged against theinner surface 940 c of thehoop 940. - 944 a, 944′a, 946 a and 946′a respectively denote the surfaces or ramps for slide provided on the
wedges surface 946′a being that of thewedge 946 intended to cooperate withsurface 944′a.Surfaces screw 945, i.e. to the longitudinal axis Y922-Y′922, by two angles α1 and α2 of opposite directions and of the same absolute value. - Each
long side part 935 is provided with asupple slot 949 which allows introduction of the protuberance 921 a in thepart 935 then tightening of this part around this protuberance, when thewedges - In this way, the
mechanical members 944 to 946 make it possible, by themselves, both to immobilize the protuberance 921 a in thepart 935 and to tension thehoop 940 around this part. In practice, the screwing of thescrew 945 in thewedge 944 has the effect of bringing closer to each other thewedges ramps ramps 946 a and 946′a, this having the effect of displacing the wedges in the direction of therod 929. - These wedges exert on the
part 935 an effort F9 directed towards therod 929 and thepart 935 is deformed, thanks to the suppleness obtained by theslot 949. Such deformation of thepart 935 results in an effort of immobilization F10 of the protuberance 921 a in this part. - In addition, the relative slide of the
wedges hoop 940, the effort F11 is transferred to the level of the part of the hoop traversing thegroove 936, this having the effect of tightening the protuberance 921 a by the combination of the efforts F10 and F11. - In practice, the efforts F10 and F11 are balanced out.
- It will be noted that the geometry of the
strut 921 is particularly simple as the protuberance 921 a is in one piece with a principal part 921 b of thestrut 921 which extends parallel to the direction Z-Z′ of oscillations of the frame. - The
hoop 940 may perform its role of reinforcement of thepart 935 efficiently, as this part has an external transverse profile constituted by the external surfaces of thesides 931 to 934, which is convex and therefore adapted for the use of such a hoop. - Furthermore, the protuberance 921 a is provided, at the level of its respective upper and lower sides, with two pointed
parts 921 g and 921 h intended to penetrate inhollow housings short sides part 935.Parts 921 g and 921 h are each defined between two V-surfaces 921 i and 921 j which are substantially planar and parallel to axis Y922-Y′922. These surfaces are inclined, in the plane ofFIG. 3 , by an angle γ of the order of 45° with respect to a plane P′2 perpendicular to the principal plane P2 of the frame 2. The angle γ may, in practice, have a value included between 20 and 70°. In other words, the upper and lower sides of the protuberance 921 a are of substantially triangular section. In a variant, only one of these sides may have such a geometry. - The internal geometry of the cross-bar 922 is adapted to that of the protuberance 921 a and
housings - In this way, the bearing between the cross-bar 922 and the element 921 a that it contains occurs via two sets of surfaces 921 i, 931 i and 932 i, on the one hand, and 921 j, 931 j, and 932 j on the other hand, distributed on either side of the plane P2 and inclined with respect thereto.
- The surfaces 921 i and 921 j are oblique with respect to one another, in the same way as surfaces 931 i and 931 j, on the one hand, 932 i and 932 j, on the other hand.
- The inclined nature of the surfaces 921 i, 921 j, 931 i, 931 j, 932 i and 932 j makes it possible to improve adherence between the
elements - In the twelfth form of embodiment shown in
FIGS. 16 and 17 , elements identical to those of the first embodiment bear identical references increased by 100. Thestrut 1021 of this embodiment likewise comprises aprotuberance 1021 a in one piece with anelongated part 1021 b, this protuberance being intended to be inserted in apart 1035 of theextremity 1028 of a cross-bar 1022. As previously, ahoop 1040 is disposed around thepart 1035 and forms therewith an end portion P. - In this embodiment, the mechanical means for immobilizing the protuberance and for tensioning the hoop are not disposed between the
part 1035 and the hoop, as in the first embodiment, but inside thepart 1035. More precisely, twowedges screw 1045. - 1044 a and 1044′a respectively denote the surfaces of these
wedges surfaces protuberance 1021 a, with angles of inclination β1 and β2, with respect to the longitudinal axis of thescrew 1045 and to axis Y1022-Y′1022, of opposite direction and with the same absolute values. - The
protuberance 1021 is also provided with arod 1021 e provided with an orifice 1021 f for passage of thescrew 1045. - As a function of the tightening of the
screw 1045, there is exerted on theshort sides part 1035 an effort F11 transmitted to thehoop 1040 for tensioning thereof. As previously, the effort F11 is transferred by thehoop 1040 in the lower part of theprotuberance 1021 a inFIG. 16 . Furthermore, theramps protuberance 1021 a an effort F10 of immobilization of this protuberance. - As is more particularly visible in
FIG. 5 , the substantially convex nature of the profile ofpart 1035 may be obtained by integrating afilling element 1050 in ahollow part 1022 a of the cross-bar 1022. In a variant, the filling element may be connected with thehoop 1040 before the latter is positioned around thepart 1035. - The
screw 945 is offset, perpendicularly to the axis Y922-Y′922 and with respect to part 921 b of thestrut 921, beyond the protuberance 921 a. Similarly, thescrew 1045 is offset with respect topart 1021 b. In this way, these screws are easy to manoeuvre without it being necessary to pierce the principal parts of the struts. - In the thirteenth form of embodiment shown in
FIG. 18 , elements similar to those of the first embodiment bear identical references increased by 1100. Themetallic strut 1121 of this embodiment is provided with a tenon orprotuberance 1121 a in one piece with theprincipal part 1121 b of the strut. - The cross-bar 1122 of this embodiment comprises a
principal part 1122 a advantageously made of synthetic material. Thispart 1122 a is in one piece with a heald-carrier rod 1129 to which it is connected by aweb 1129 c. The cross-bar 1122 also comprises ametal hoop 1140 which is glued around oneextremity 1128 a of thepart 1122 a. 1148 denotes the layer of glue interposed between theelements hoop 1140 extends in the direction of theprincipal part 1121 b of thestrut 1121 beyond theextremity 1128 a. 1140 a denotes the part of the hoop surrounding theextremity 1128 a of thesynthetic portion 1122 a of the cross-bar 1122. 1140 b denotes the part of thehoop 1140 which extends beyond thepart 1128 a and which defines atubular portion 1135 of the cross-bar 1122 provided to receive thetenon 1121 a. Theelements - As previously, a
notch 1136 is made between theprincipal part 1122 a of the cross-bar 1122 and the heald-carrier rod by means of a localized recess of theweb 1129 c. The heald-carrier rod 1129 is in overhang over a part of its length. - A
nut 1126 is immobilized on an internal face of thepart 1140 b of the hoop and is traversed by thestem 1125 a of alocking screw 1125. Thestem 1125 a and thenut 1126 constitute means for locking thetenon 1121 a, located inside thepart 1140 b of thehoop 1140. - This embodiment presents the particular advantage that the dismountable link between the
tenon 1121 a and thehoop 1140 employs only pieces of high resistance in abutment against one another, which are advantageously made of metal. In addition, the whole interior volume of thehoop 1140 is available for positioning thetenon 1121 a whose height and thickness may be increased with respect to those of the corresponding parts of the frames of the other embodiments. - According to a variant of the invention (not shown) applicable to different forms of embodiment, the hoop may be immobilized on the cross-bar by hot-crimping.
- Whatever the form of embodiment considered, the hoop remains in place on the cross-bar when the frame is dismantled, this making it possible, in particular, for it to protect the extremities of those parts of this cross-bar which are advantageously made of synthetic material.
- Whatever the form of embodiment of the invention considered, the heald-carrier rod remains fast with the cross-bar, this implying that the healds used are of “open” type.
- The invention has been represented with mechanical means comprising two wedges cooperating for the immobilization of the strut and the tensioning of the hoop. However, it is applicable with one sole wedge provided with one sole effort transmission ramp.
- The invention is applicable independently of the material used for the parts constituting the frames, particularly the struts and the cross-bars. In particular, it is applicable to frames made of light alloy such as aluminium, and to frames of composite materials, with an organic resin and carbon- or glass-reinforced fibres. In addition, the hoops may be made of metal or of composite material.
- The invention is applicable independently of the geometry of the heald-carrier rods of the cross-bars which may have different shapes adapted to that of the extremities of the healds.
- The characteristics of the different forms of embodiment described hereinabove may be combined together within the scope of the present invention. In particular, inclined surfaces similar to surfaces 921 i, 921 j, 931 i, 931 j, etc. . . . of the eleventh embodiment may be provided in the twelfth embodiment at the level of the
protuberance 1021 a, between the cross-bar 1022 and this protuberance, at the level of the lowershort side 1032, and/or between the cross-bar 1022 and thewedges short side 1031.
Claims (28)
1. Heald frame for weaving loom, said frame being obtained by assembling two struts with two cross-bars each provided with a heald-carrier rod in one piece with the corresponding cross-bar or added thereon over substantially the whole of its length, at least one of the extremities of at least one of the cross-bars being equipped with at least one member for locking a part of an adjacent strut, inside an end portion of said cross-bar forming a zone of junction with said strut, characterized in that said end portion (P) comprises a part (35; 135; 235; 335; 435; 535; 835; 935; 1035; 1135) whose external transverse profile is substantially convex and at least one hoop (40; 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040; 1140) surrounding said part of substantially convex external transverse profile and said locking member (25, 26; 944-946; 1044, 1046; 1125 a, 1126), in order to resist a locking effort (F3, F′3) exerted by said locking member.
2. Heald frame according to claim 1 , characterized in that said hoop (40; 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040) surrounds said part of substantially convex external transverse profile (35; 135; 235; 335; 435; 535; 835; 935; 1035) which is tubular and itself surrounds said locking member (25, 26; 1044, 1046) and/or said part (921 a; 1021 a) of said strut.
3. Frame according to claim 1 , characterized in that said cross-bar (22; 122; 222; 322; 422; 522; 622. 822; 922; 1022; 1122) is provided, between said zone of junction (35; 135; 235; 335; 435; 535; 835; 935; 1035; 1128 a) and said heald-carrier rod (29; 129; 829; 929: 1129), with a volume (36; 136; 436; 836; 936; 1136) for partially receiving said hoop (40; 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040; 1140).
4. Frame according to claim 3 , characterized in that said volume is formed by a groove (36; 136; 436; 836; 936; 1136) extending between said zone of junction (35; 135; 435; 935; 1128 a; 1135) and said rod (29; 129; 829; 939; 1129), in a direction (Y36-Y′36; Y836-Y′836) substantially parallel to a longitudinal axis (Y22-Y′22; Y822-Y′822) of said cross-bar (22; 122; 822; 922; 1122).
5. Frame according to claim 4 , characterized in that said groove (36; 136; 436) opens out on a terminal face (28 a) of the extremity (28; 928; 1028) of the cross-bar (22; 122; 222; 322; 422; 522; 622; 922; 1022; 1122).
6. Frame according to claim 3 , characterized in that said groove is formed by an oblong slot (836) made between said part (835) of substantially convex external transverse profile and said heald-carrier rod (829), said slot not opening out on a terminal face (828 a) of the extremity (828) of the cross-bar (822).
7. Frame according to claim 1 , characterized in that said heald-carrier rod (29; 129; 829; 929; 1129) extends in overhang over a part (29 a; 129 a; 929 a) of its length disposed opposite said zone of junction (35; 135; 935; 1128 a; 1135).
8. Frame according to claim 1 , characterized in that it comprises means (40-42; 144-146; 244-247; 344-347; 444, 448; 541; 944-946; 1044, 1046; 1148) for immobilizing said hoop (40; 140; 240; 340; 440; 540; 640; 740; 840; 940; 1040; 1140) on said zone of junction (35; 135; 235; 335; 435; 535; 835; 935; 1035; 1128 a; 1135).
9. Frame according to claim 8 , characterized in that said immobilizing means comprise a wedge (144, 144′; 244; 344) adapted to cooperate with a corresponding ramp (146 a, 146 a′, 222 b; 340 c) provided on an outer face (222 b) of said cross-bar (222), on an intermediate piece (146) or on an inner face (340 c) of said hoop (340) with a view to tensioning said hoop (140; 240; 340).
10. Frame according to claim 9 , characterized in that said wedge (144; 244; 344) is controlled, in its displacement with respect to said ramp (146 a, 146′a, 222 b; 340 c), by means of a screw-nut link (144-145; 244-245; 344-345).
11. Frame according to claim 8 , characterized in that said hoop (440; 1140) is glued (448; 1148) around said extremity (435; 1128 a) of cross-bar (422; 1122 a).
12. Frame according to claim 8 , characterized in that said hoop (540) is provided with at least one orifice (540 e) for passage of a locking member (541) on said cross-bar extremity (535).
13. Frame according to claim 1 , characterized in that said hoop (40) is formed by bending a metal sheet shaped around said zone of junction (35).
14. Frame according to claim 1 , characterized in that it comprises mechanical means (944-946; 1044-1045) adapted to ensure both the immobilization (F10) of a part (921 a, 1021 a) of said strut (921; 1021) in said end part (935;1035) and the tensioning (F11) of said hoop (940; 1040).
15. Frame according to claim 14 , characterized in that said mechanical means comprise at least one wedge (944, 944′, 946; 1044, 1044′) interposed between said part (921 a, 1021 a) of said strut (921; 1021) and said hoop (940; 1040).
16. Frame according to claim 15 , characterized in that said wedge (944, 944′; 1044, 1044′) is controlled, in a movement of translation substantially parallel to a longitudinal axis (Y922-Y′922; Y1022-Y′1022) of said cross-bar (922; 1022), by a screw-nut type link (944-945; 1044-1045).
17. Frame according to claim 15 , characterized in that said mechanical means comprise two wedges (944, 944′; 1044, 1044′) provided with effort transmission ramps (944 a, 944′a; 1044 a, 1044′a) inclined at angles (α1, α2; β1, β2) opposite with respect to a longitudinal axis (Y922-Y′922; Y1022-Y′1022) of said cross-bar (922; 1022).
18. Frame according tclaim 14 , characterized in that the part (921 a, 1021 a) of said strut (921; 1021) inserted in said end part (935; 1035) of the cross-bar (922; 1022) is in one piece with the principal elongated part (921 b; 1021 b) of said strut.
19. Frame according to claim 14 , characterized in that the part (1021 a) of said strut (1021) inserted in said end part (1035) of the cross-bar (922; 1022) is provided with a member (1021 e) for holding said mechanical means (1044-1045).
20. Frame according to claim 16 , characterized in that said member is a rod (1021 e) provided with an orifice (1021 f) for passage of a screw (1045) for tightening two wedges (1044, 1044′) against ramps (1021 c, 1021 d) formed on said part (1021 d) of said strut (1021), on either side of said rod.
21. Frame according to claim 14 , characterized in that, at the level of at least one of its upper (932, 1032) or lower (921, 1031) zones of contact with the strut (921) and/or with wedges (1044, 1044′) borne by said strut (1021), said cross-bar (922, 1022) is provided with at least two substantially planar bearing surfaces (931 i, 931 j, 932 i, 932 j) parallel to a longitudinal axis (Y922-Y′922) of the cross-bar and oblique between one another, while said part (921 a) of said strut (921) introduced in said cross-bar and/or wedges (1044, 1044′) borne by said part (1021 a) is and/or are provided with complementary bearing surfaces (921 i, 921 j) likewise oblique between one another.
22. Frame according to claim 14 , characterized in that said mechanical means comprise at least one control screw (945; 1045) offset, in a direction perpendicular to a longitudinal axis (X922-X′922; Y1022-Y′1022) of said cross-bar (922; 1022) and beyond the part (921 a, 1021 a) introduced in said cross-bar, with respect to a principal part (921 b; 1021 b) of said strut (921; 1021).
23. Frame according to claim 3 , characterized in that said hoop (1140) surrounds (at 1140 a) an extremity (1128 a) of a principal part (1122 a) of said cross-bar (1122) and extends beyond this extremity in a tubular part (1140 b) for receiving and immobilizing said part (1121 a) of said strut (1121).
24. Frame according to claim 23 , characterized in that said hoop is crimped hot around said cross-bar.
25. Frame according to claim 3 , characterized in that said cross-bar (922) is provided with at least one flexible slot (949).
26. Frame according to claim 25 , characterized in that said part of said extremity (935) of substantially convex profile is of substantially rectangular section and in that said slot (949) is made in a long side (933, 934) of said section.
27. Frame according to claim 2 , characterized in that the substantially convex profile of said part (1035) of said extremity of the cross-bar is obtained by adding a filling element (1050) between said part (1035) and said hoop (1040).
28. Weaving loom (M) equipped at least with a heald frame (2) according to claim 1.
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0211511A FR2844530B1 (en) | 2002-09-17 | 2002-09-17 | FRAMES OF LISSES AND WEAVING EQUIPPED WITH SUCH FRAMEWORK |
FR0211511 | 2002-09-17 | ||
FR0213245 | 2002-10-23 | ||
FR0213245A FR2846344B1 (en) | 2002-10-23 | 2002-10-23 | STRING FRAME AND WEAVING EQUIPMENT PROVIDED WITH SUCH A FRAME |
PCT/FR2003/002743 WO2004027134A2 (en) | 2002-09-17 | 2003-09-17 | Mounting frame and loom fitted with said mounting frame |
Publications (1)
Publication Number | Publication Date |
---|---|
US20050241718A1 true US20050241718A1 (en) | 2005-11-03 |
Family
ID=32031837
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/522,817 Abandoned US20050241718A1 (en) | 2002-09-17 | 2003-09-17 | Mounting frame and loom fitted with said mounting frame |
Country Status (8)
Country | Link |
---|---|
US (1) | US20050241718A1 (en) |
EP (1) | EP1540056B1 (en) |
JP (1) | JP2005539156A (en) |
KR (1) | KR101000824B1 (en) |
CN (1) | CN1681983A (en) |
AU (1) | AU2003276350A1 (en) |
DE (1) | DE60313475T2 (en) |
WO (1) | WO2004027134A2 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20080178960A1 (en) * | 2007-01-31 | 2008-07-31 | Staubli Faverges | Shed-forming device incorporating electric motor units and weaving loom equipped with such a device |
US20080236698A1 (en) * | 2007-03-26 | 2008-10-02 | Groz-Beckert Kg | Heald support bar of bent sheet metal |
US20100043907A1 (en) * | 2006-10-05 | 2010-02-25 | Joost Deseyne | Heddle frame with reinforcing profile for a weaving machine |
US10287712B2 (en) * | 2016-07-22 | 2019-05-14 | Staubli Faverges | Shed forming machine and loom including such a machine |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2925073B1 (en) * | 2007-12-12 | 2010-04-09 | Staubli Sa Ets | SMOOTH FRAME FOR WEAVING EQUIPPED WITH SUCH FRAME. |
EP2578732B1 (en) * | 2011-10-05 | 2014-04-30 | Groz-Beckert KG | Heald shaft with a lightweight shaft rod |
BE1022297B1 (en) * | 2014-09-12 | 2016-03-14 | Picanol | CORNER CONNECTION DEVICE FOR A WEAVING FRAME |
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US1082317A (en) * | 1912-12-16 | 1913-12-23 | Joachim Giardino | Heddle-frame for looms. |
US1142290A (en) * | 1914-10-21 | 1915-06-08 | Paul A Wagner | Support for heddle-bars. |
US2216682A (en) * | 1939-05-25 | 1940-10-01 | Grob & Co Ag | Heddle frame for looms |
US3335759A (en) * | 1965-04-30 | 1967-08-15 | Grob & Co Ag | Corner connection on a heddle frame |
US3901282A (en) * | 1974-05-22 | 1975-08-26 | Steel Heddle Mfg Co | Loom harness |
US3948296A (en) * | 1972-06-30 | 1976-04-06 | Grob & Co. Aktiengesellschaft | Frame stave for heald frame of weaving machine |
US4112980A (en) * | 1976-04-08 | 1978-09-12 | Sulzer Brothers Limited | Loom harness |
US5411061A (en) * | 1993-12-16 | 1995-05-02 | Steel Heddle Mfg. Co. | Heddle frame assembly with releasable end braces |
US5819810A (en) * | 1997-04-17 | 1998-10-13 | Steel Heddle Manufacturing Company | Heddle frame assembly with corner sleeve member |
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DE379288C (en) * | 1923-08-20 | Zwickauer Webutensilienfabrik | Heald frame with end connectors held by attached slides | |
GB419051A (en) * | 1934-08-18 | 1934-11-05 | Jack Wilcock | Improvements in or relating to heald frames |
GB925562A (en) * | 1960-11-17 | 1963-05-08 | Lund & Son Ltd T | Improvements in heald frames for looms |
CH609384A5 (en) * | 1977-02-15 | 1979-02-28 | Sulzer Ag | Heald frame |
FR2681614B1 (en) * | 1991-09-20 | 1993-12-03 | Burckle Cie Sa Ets | DETACHABLE ELASTIC JOINT IN AN ANGLE OF A STRING FRAME FOR WEAVING MACHINES. |
JP3600657B2 (en) * | 1995-03-31 | 2004-12-15 | ナンカイ工業株式会社 | Heald frame |
-
2003
- 2003-09-17 JP JP2004537212A patent/JP2005539156A/en active Pending
- 2003-09-17 WO PCT/FR2003/002743 patent/WO2004027134A2/en active IP Right Grant
- 2003-09-17 DE DE60313475T patent/DE60313475T2/en not_active Expired - Lifetime
- 2003-09-17 AU AU2003276350A patent/AU2003276350A1/en not_active Abandoned
- 2003-09-17 CN CN03822024.5A patent/CN1681983A/en active Pending
- 2003-09-17 KR KR1020057004458A patent/KR101000824B1/en active IP Right Grant
- 2003-09-17 EP EP03797343A patent/EP1540056B1/en not_active Expired - Lifetime
- 2003-09-17 US US10/522,817 patent/US20050241718A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1082317A (en) * | 1912-12-16 | 1913-12-23 | Joachim Giardino | Heddle-frame for looms. |
US1142290A (en) * | 1914-10-21 | 1915-06-08 | Paul A Wagner | Support for heddle-bars. |
US2216682A (en) * | 1939-05-25 | 1940-10-01 | Grob & Co Ag | Heddle frame for looms |
US3335759A (en) * | 1965-04-30 | 1967-08-15 | Grob & Co Ag | Corner connection on a heddle frame |
US3948296A (en) * | 1972-06-30 | 1976-04-06 | Grob & Co. Aktiengesellschaft | Frame stave for heald frame of weaving machine |
US3901282A (en) * | 1974-05-22 | 1975-08-26 | Steel Heddle Mfg Co | Loom harness |
US4112980A (en) * | 1976-04-08 | 1978-09-12 | Sulzer Brothers Limited | Loom harness |
US5411061A (en) * | 1993-12-16 | 1995-05-02 | Steel Heddle Mfg. Co. | Heddle frame assembly with releasable end braces |
US5819810A (en) * | 1997-04-17 | 1998-10-13 | Steel Heddle Manufacturing Company | Heddle frame assembly with corner sleeve member |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100043907A1 (en) * | 2006-10-05 | 2010-02-25 | Joost Deseyne | Heddle frame with reinforcing profile for a weaving machine |
US7866349B2 (en) * | 2006-10-05 | 2011-01-11 | Picanol N.V. and Verbrugge N.V. | Heddle frame with reinforcing profile for a weaving machine |
US20080178960A1 (en) * | 2007-01-31 | 2008-07-31 | Staubli Faverges | Shed-forming device incorporating electric motor units and weaving loom equipped with such a device |
US7730910B2 (en) * | 2007-01-31 | 2010-06-08 | Staubli Faverges | Shed-forming device incorporating electric motor units and weaving loom equipped with such a device |
US20080236698A1 (en) * | 2007-03-26 | 2008-10-02 | Groz-Beckert Kg | Heald support bar of bent sheet metal |
US7624764B2 (en) * | 2007-03-26 | 2009-12-01 | Groz-Beckert Kg | Heald support bar of bent sheet metal |
US10287712B2 (en) * | 2016-07-22 | 2019-05-14 | Staubli Faverges | Shed forming machine and loom including such a machine |
Also Published As
Publication number | Publication date |
---|---|
CN1681983A (en) | 2005-10-12 |
WO2004027134A3 (en) | 2004-07-29 |
WO2004027134A2 (en) | 2004-04-01 |
AU2003276350A1 (en) | 2004-04-08 |
DE60313475D1 (en) | 2007-06-06 |
DE60313475T2 (en) | 2008-01-03 |
EP1540056A2 (en) | 2005-06-15 |
EP1540056B1 (en) | 2007-04-25 |
JP2005539156A (en) | 2005-12-22 |
KR101000824B1 (en) | 2010-12-14 |
KR20050044924A (en) | 2005-05-13 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |