JP2013083035A - Heald frame with light-weight shaft rod - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a corner connector for light-weight shaft rods.SOLUTION: A heald frame comprises at least one shaft rod 14 made of a light-weight material and at least one lateral support. They are connected with each other via a corner connection with a specifically configured receptacle 25. The receptacle 25 comprises at least one, preferably two flat bodies. At least one of the flat bodies is connected with two abutment elements 30 and 31. One of these is fixed or mounted stationarily, and the other is held or mounted so as to be at least minimally movable. The two abutment elements 30 and 31 project beyond the face-side edge 33 of the flat body at different distances. Tension means becomes active between the two abutment elements 30 and 31.

Description

  The present invention relates to a heald frame having a shaft and rod made of fiber reinforced plastic material. In particular, the present invention relates to a connection between a column on the side of a heald frame and a shaft rod.

  Typically, a heald frame is a rectangular frame-shaped structure with long, horizontally disposed shaft rods and vertical side posts that connect the shaft rods to each other along their respective ends. Consists of. The shaft rod supports a heald support rail for receiving the heald. Such a basic configuration of the heald can be referred to, for example, from Patent Document 1 or Patent Document 2, Patent Document 3, and Patent Document 4. In order to attach the heald to the heald support rail, it is necessary that the heald be removable. For this purpose, a suitable corner joint is used to connect the side strut to the shaft rod. In most cases, corner joints are designed as tightening or tensioning devices. They are provided to convey to the shaft rod the longitudinal force of the side struts so that the shaft rod is not damaged.

  In this connection, US Pat. No. 6,057,059 suggests that two sheet metal plates are attached to the end of the shaft rod, where the block is firmly attached between the sheet metal plates. The sheet metal plate and the block have a hollow space in which the protruding portion of the side column is mounted. One of the blocks is provided with a threaded hole into which a clamping screw is screwed. The tightening screw presses the protruding portion of the side column to the opposite block, thereby applying tension to the corner joint and placing it in place.

  Patent Document 5 discloses a heald frame made of an aluminum molding material or a composite material shaft and rod. A sleeve element with a U-shaped cross section is applied to its end, and its legs extend over the flat side of the shaft rod. The sleeve element receives a mounting screw for connecting a side post extension.

  Patent Document 6 discloses a heald having a corner connection that utilizes the elasticity of the heald frame. The latter is provided with a longitudinal slit (starting from a depression at the end of the heald frame) that extends a certain distance over the length of the shaft rod. In addition, the shaft rod contains two tension blocks called guide members which are inserted into the hollow space of the shaft rod and are firmly connected to the side walls. The clamping screw can pull the two tension blocks in the direction of each other. They fasten the side strut extensions between them. To clamp or release the side support extension in place, the tension block can be moved very little by a longitudinal slit in the shaft rod.

  The corner connection of US Pat. In this case as well, longitudinal slits acting on the ends of the shaft and rod are used to allow the clamping action of the legs of the shaft and rod arranged above and below the slit.

  The principle described above creates problems when applied to synthetic resin shaft rods, especially fiber reinforced rods.

German Patent No. 10116813 European Patent Application No. 0531886 European Patent No. 0659178 European Patent Application No. 1985733 European Patent No. 053281 German Patent No. 10116813 Swiss Patent No. 427688

  An object of the present invention is to provide a corner joint for a lightweight shaft rod.

  The heald frame of the present invention comprises a lightweight shaft rod of fiber reinforced plastic material reinforced with, for example, carbon fiber. This may be a mud material or a hollow molding material. The fibers for reinforcement may be long fibers or short fibers. The fibers may be arranged in the plastic material in an aligned or random manner. They may be arranged as woven, knitted, aligned, individual filaments, leashes and the like. For example, they may extend mostly in the length direction of the shaft and / or in other directions. They may be organic or inorganic fibers, carbon fibers and the like. The fibers are embedded in a matrix, preferably a plastic matrix, or in a metal matrix, such as a magnesium-aluminum metal matrix.

  An insertion port is provided in the shaft rod, and the insertion port consists of two planar bodies. They are glued to, or planarly joined to, the two side regions, preferably the end regions. This flat body may be, for example, a sheet metal plate, a synthetic resin plate, or the like. They may have the same thickness or alternating thicknesses. For example, the planar body may be tapered from the end of the shaft / rod toward the center. This helps to transmit the force on the corner joint to the shaft and rod over a wide area and without local surge. An alternative embodiment is one that requires only one planar body. This flat body is bonded to both sides in a slit provided in advance parallel to the flat side of the shaft and rod.

  A first rigid abutment member and a second further abutment member that can be tensioned against the first abutment member are arranged between the two planar bodies. The tension means may apply tension to the second contact member with respect to the first contact member. A suitable recess in the shaft rod forms a pocket between the two abutment members. The member protruding from the side strut and housed between the two abutment members is clamped in place in this pocket and thus establishes a firm connection between the shaft rod and the side strut it can. On the one hand, the extension of the side struts, since the first abutment member is rigid and the second abutment member is elastic and is elastically and pivotally supported or at least minimally movable It is possible to ensure a reliable tightening and thus a secure installation. And on the other hand, when this connection is tightened, a firm connection between the side struts and the shaft rod is provided. The first contact member and the second contact member are preferably members that are arranged independently of each other on the plane body. Alternatively, the first abutting member and the second abutting member may be a functional part of an integral insert disposed between the planar bodies.

  Furthermore, it is possible to completely eliminate the second contact member. A threaded hole into which a bolt extending through the first abutting member is fitted may be provided in the extended portion of the side support column. The first abutting member is preferably located on the side of the extended portion away from the side column.

  The present invention combines several advantages. The present invention provides a technique for securely connecting side struts to a shaft rod made of a lightweight material that is definitely sensitive to locally applied forces. Such lightweight shaft rods may be made, for example, from muc materials or hollow fiber reinforced plastic materials. They may be made of light metals, in particular aluminum and / or magnesium alloys, and are configured as thin metal sheets between which foam bodies, honeycomb bodies, etc. are held for reinforcement. However, they can also be light metal shafts and rods configured as mug material or hollow bodies. The corner joint of the present invention can be used with any shaft rod as described above and similar.

  Since the two abutting members have different configurations or / and arrangements, the task is achieved in a divided manner. One of the abutment members is provided to establish a rigid force transmission path between the side struts and the flat portion, and the other abutment member is provided to act as a tensioning means.

  The heddle frame has a flat side surface at least in a certain region. The planar body is preferably arranged in a flat region on the side surface. However, if the shaft rod has at least one non-planar side, it can also be adapted to the corresponding non-flat side so that the plane has a corresponding complementary shape. is there.

  The two sides of the shaft rod are preferably oriented so as to be parallel to each other. The shaft rod preferably has a rectangular cross section. Other forms of cross section are possible.

  As stated, the planar body may be a metal plate. In particular, a steel plate, an aluminum plate, a sheet metal member, etc. may be used. They preferably extend from one narrow side of the shaft rod to the other. In this way, the introduction of force over a wide area is achieved. The metal plate or sheet can be attached to the shaft rod in a planar manner and preferably bonded. The flat body is preferably provided with one, preferably several, protrusions, such as ridges and protrusions, on the adhesive side facing the shaft and rod, and these heights are formed. Determine the thickness of the adhesive connection. These heights serve as spacing means for quality assurance in the manufacture of adhesive connections.

  If desired, the planar body may extend slightly beyond the narrow side of the shaft rod, but this is not absolutely necessary. They are preferably released on at least one narrow side of the shaft rod.

  The two abutment members preferably have different lengths. In particular, it is preferable that the firmly provided contact member protrudes further from the front side of the shaft / rod than another contact member used for tightening. However, it is preferred that both abutment members extend beyond the planar body. Technically, this tight abutment is provided in particular for the transmission of the pressing force transmitted from the side struts to the shaft rod. The longer, rigid abutment member preferably extends beyond at least a portion of the side post cross-section.

  It is preferable that the first contact member is firmly connected to the flat body by, for example, adhesion or welding. For this purpose, individual welding spots or seams, for example laser welding seams, can be provided. It is also possible to provide a mechanical connection between the planar body and the abutment member by means of one or more scissors, one or more screws or another fastening means.

  At least one end of the second abutment is slightly movable. This mobility can be achieved such that the abutment member is movably connected to the planar body. This can be achieved with screws, scissors or the like. It is also possible to weld the inner end of the abutment member to one or both planar bodies. For this, one or more welds or weld seams may be used. The portion of the abutment member that extends away from the weld location bends naturally with some elasticity, which can be used to achieve the desired minimum mobility. In addition, the contact member may have a dent at one or more locations in order to have better elasticity.

  The frame of the heald frame may be reduced to one shaft rod and one or two side posts. Such a configuration can be used, for example, in a heald frame consisting of a lower part firmly associated with the loom and an upper part that can be removed from the loom. Each and every of the above variants is applied to reduce the frame of such a heald frame. The heddle frame, however, is preferably a complete rectangular frame with two shaft rods and two side posts.

  Further details of advantageous embodiments of the invention will be apparent from the following description, the claims and the drawings.

It is the schematic of a hold frame. It is a figure which shows the corner connection between the support | pillar and shaft rod of the side surface of the heald frame shown by FIG. It is a schematic perspective view of the support | pillar of the side surface of FIG. FIG. 3 is another view, partly broken, of the shaft rod of FIG. It is a detailed top view of the shaft rod of FIG. It is the figure which showed a part of the Example by which the shaft and the rod were changed with the broken view.

  FIG. 1 shows a heald frame 10 which is part of a loom not specifically shown. This heald frame is a rectangular frame in which individual healds 11 are arranged. This is arranged during the weaving process in order to guide the warp yarn which is not specifically shown. The heald 11 is disposed on heald support rails 12 and 13 that are disposed vertically and horizontally with a distance. Upper heald support rail 12 is attached to upper shaft rod 14. The lower heald support rail 13 is attached to the lower heald rod 15. Each of the upper and lower shaft rods 14, 15 is comprised of a suitable lightweight material, such as a fiber reinforced plastic material, a thin sheet metal reinforced with honeycomb, a thin wall aluminum extrusion, and the like. Side struts 16, 17 are connected to the ends of shaft rods 14, 15, thereby forming a rectangular frame. This frame moves up and down during the operation of the loom. At least two connections 18, 19 connected by suitable drive links drive the heald frame 10. The connections 18, 19 may be provided on the shaft rod, as shown, or on the side struts.

  Corner joints are provided to connect the side posts 16, 17 and the shaft rods 14, 15. And one of these on the upper left is emphasized by a one-dot chain line circle in FIG. The following description of the corner connection 20 highlighted here therefore applies to the three remaining other corner connections. For example, the same applies to a corner connection of a hull frame consisting of only one shaft rod and one or two struts.

  FIG. 2 illustratively shows a corner connection 20 between the shaft rod 14 and the side struts 16. In this case, the shaft rod 14 is made of, for example, muk fiber reinforced plastic material having a thin, rectangular cross section. Thus, the shaft rod preferably comprises an upper narrow side 21, a lower narrow side 22 and has two planar flat sides 23, 24 (FIG. 5), but this is not necessarily so. The narrow sides 21 and 22 extend in the horizontal direction during operation, whereas the flat sides 23 and 24 extend in the vertical direction during operation. The cross section of the shaft / rod 14 may be uniform. However, this shaft rod is provided adjacent to the upper and / or lower narrow side 21 or 22 in a reinforcing shape, such as a hollow metal shape, a plastic material or a rod-like shape of another member. It may be done.

  The corner connection 20 is provided with a slot 25 that is securely connected to the shaft rod 14. In this embodiment, the slot 25 consists of a rear planar body 26 and a front planar body 27, each of which is firmly connected to the flat sides 23, 24. In the simplest case, the planar bodies 26, 27 may consist of sheet metal plates or other plate-like members, for example members made of plastic material. However, the planar bodies 26 and 27 are preferably made of a material different from that of the shaft rod 14 or a material composition different from that of the shaft rod 14. For example, the plane bodies 26 and 27 may be made of aluminum or steel. In order to make a planar connection, the planar bodies 26, 27 are glued to the shaft rod 14. FIG. 5 shows the corresponding bonded joints 28, 29. Each of them preferably extends over the entire surface of the planar bodies 26, 27. The flat bodies 26 and 27 may have small (not shown in particular) protrusions such as protrusions. They abut against the flat sides 23, 24 and define a gap for a defined thickness of adhesive.

  In particular, as shown in FIG. 4, the insertion opening 25 includes a first contact member 30 and a second contact member 31. The two contact members 30, 31 are connected to the flat bodies 26, 27, for example, in the form of being welded or bonded to each other. For example, the contact member 30 is an elongated metal rod having a rectangular cross section. However, it is also possible to use a hollow metal molded product, a U-shaped molded product, or the like. FIG. 4 shows a connection area 31 specified by hatching. In this connection region, the abutment member 30 is connected to the planar body 27 and is connected to the planar body 26 on the corresponding hidden side. For example, a welding seam, such as laser welding, can be used for the connection. Other welding methods such as spot welding, resistance welding, friction welding, electron beam welding are possible and can be used as well as soldering methods. The contact member 30 is rigid and protrudes beyond the front edge 33 of the flat body 26 or 27. As shown in FIG. 2, the abutting member 30 is disposed on the side of the insertion opening 25 at a distance from the side column 16. In this case, it extends over the inner edge of the side strut 16, so that it can extend at least partially beyond the cross-section of the side strut. In this way, the pressing force is absorbed by the contact member 30 and transmitted to the insertion port 25, whereby the pressing force of the side column is reduced.

  The second contact member 31 is preferably shorter. It protrudes less over the edge 33. In addition, it is at least minimally movable toward and away from the abutment member 30. To accomplish this, it can be securely attached to the planar bodies 26, 27 only in a small area 34, as shown in FIG. Again, this region 34 may consist of suitable connection means such as a welding spot, a welding seam, a soldering spot, a solder imposition, etc. The first abutting member 30 and the second abutting member 31 may be a functional part of an insertion portion configured separately.

  The two abutting members 30, 31 are accompanied by tension means 35, which are suitable for applying tension to the abutting member 31 toward the abutting member 30. The tension means 35 may be a clamp bolt 36, for example. It extends through a vertical hole 37 provided in the upper abutment member and can be screwed into the aligned screw hole 38 of the second abutment member 31.

  In the region of the abutment members 30, 31, the shaft rod 14 is provided with dents 39, 40 and further dents for forming a recess 41 therebetween. This pocket is provided for receiving an extension 42 of the side post 16. This extension is shown in FIG. The extended portion 42 has a height corresponding to the distance between the contact members 30 and 31. This extension has a thickness approximately corresponding to the distance between the flat portions 26, 27. The extension 42 is preferably rounded or chamfered at its free end. This extension preferably has a rectangular cross section. The side struts 16 are provided with steps 43, 44 or shoulders on either side in the vicinity of the extension 42, which act as stops or abutment surfaces for the edge 33. As shown in FIG. 2, the edge 33 may protrude slightly beyond the front end of the shaft rod 14. Near the steps 43, 44, a through hole 45 is provided in the side post 16 and a clamp bolt 36 passes through this hole as its passage. Alternatively, a further abutting member for the extension 42 of the side strut 16 may be provided in the pocket 41, such a abutting member, like the abutting members 30, 31, in a planar body. 26, 27.

  It should also be pointed out here that the side struts 16 may be provided with further structures, for example extensions 46. This is to fix one of the heald support rails in place in the axial direction or to function as an abutment for a heald seated on the heald support rail. In addition, the connections 18, 19 are connected to the flat bodies 26, 27, for example by weld seams, or if the flat bodies thus extend beyond the respective narrow side of the associated shaft rod 14 or 15, You may connect directly or indirectly by the connection etc. by attachment. If the first abutment member 30 abuts flush against the outer corner of the shaft rod 14, the connections 18, 19 may be screwed or connected directly to the first abutment member 30. .

  The corner connection described so far works as follows.

  To form a corner connection, the extension 42 of the side strut 16 is inserted into the pocket 41 until the steps 43, 44 abut the respective edges 33. The clamp bolt 36 is then screwed into the screw hole 38 through the holes 37, 45. The abutting member 31 is firmly pressed against the protruding portion 42 by tightening the clamp bolt 36. Next, the protrusion is firmly pressed against the contact member 30. At that time, the corner connection is operationally safe. The distance between the screw hole 38 and the region 34 at this time ensures a certain minimum mobility of the abutment member 31. This mobility is indicated by the double arrow in FIG. This mobility is sufficient to allow one side to easily move the extension 42 into and out of the pocket 41 and, on the other hand, one tenth of a millimeter that can securely clamp the extension 42 in place. May be limited to a small amount.

  If the abutment member 31 includes a suitable spring region 48, the mobility can be enhanced. This spring region is preferably indicated by the region 34 of the adjacent indentation 49 where the cross section of the abutment member 31 is reduced. As shown, the dent 49 can be provided on the side away from the pocket 41 or on the side facing the pocket 41 on the abutment member 31 side. Other means for reducing the cross-section of the member and thus increasing the elasticity, for example holes, are possible.

  FIG. 6 shows a modified embodiment of the slot 25. Again, the connection between the abutment member 30 and the planar bodies 26, 27 is made by an adhesive connection between the materials, for example, welding, soldering, bonding, or by screws or rivet joints as shown. Also good. Connection between the abutting member 31 and the planar bodies 26 and 27 can be made by an articulated hinge 50. The articulated hinge 50 may be, for example, a bolt or a pin that extends between the planar bodies 26 and 27. The bolt or pin extends through a hole in the contact member 31. This hole extends transversely to the edge 33. The pin may be part of a screw or bolt. Alternatively, the pins may be seated in the holes in the planar bodies 26, 27 and form a press fit, staking or other connection therewith. Again, there is a certain degree of mobility toward or away from the contact member 30 regardless of the elasticity of the contact member 31. Otherwise, its function is consistent with the embodiment described in connection with FIG.

  The heald frame of the present invention includes at least one shaft rod 14 and at least one side post 16 made of a lightweight material. They are connected to each other via a corner connection 20 with a specially configured outlet 25. The insertion port 25 includes at least one, preferably two, plane bodies 26 and 27. At least one of the planar bodies 26 is connected to the two contact members 30 and 31. One of these is fixed or statically attached and the other is held or attached so that it is at least minimally movable. The two contact members 30 and 31 protrude beyond the front edge 33 of the planar body 26 at different distances. The tension means 35 acts between the two contact members 30 and 31. This tensioning means is provided to apply tension to the shorter abutting member 31 in the direction of the longer abutting member 30, and an extended portion of the side column 16 at a predetermined position between the abutting members 30, 31. Tighten 42. Planar body 26 transmits force between side struts 16 and shaft rod 14. The force acts over a wide surface of the shaft / rod.

10 Held frame 11 Held 12, 13 Held support rail 14 Upper shaft rod 15 Lower heald rod 16 Left column 17 Right column 18 Left connection 19 Right connection 20 Corner connection 21 Upper narrow side 22 Lower side Narrow side 23 Rear flat side 24 Front flat side 25 Insert 26 Rear flat body 27 Front flat body 28 Adhesive connection 29 of flat body 26 Adhesive connection 30 of flat body 27 First contact member 31 2 contact members 32 connection area 33 edge 34 area 35 tension means 36 clamp bolt 37 hole 38 screw hole 39, 40 dent 41 pocket 42 extension part 43, 44 step 45 through hole 46 extension part 47
48 Spring region 49 Recess 50 Articulated hinge

Claims (15)

A shaft rod (14) with two wide sides (23, 24) and two narrow sides (21, 22), configured to be lightweight;
A side post (16) connected to one end of the shaft rod (14) and having a laterally extending extension (42);
A heald frame (10) comprising an insertion slot (25) and at least one planar body (26) connected in a plane to the region of the two side surfaces (23, 24),
The flat body (26) is arranged with a firm first contact member (30) and a little apart from the first contact member, and applies tension toward the solid contact member (30). Connected to the second abutment member,
A pocket (41) for accommodating the extended portion (42) is provided between the contact members,
A heddle frame comprising tension means (35) for applying tension to the second contact member (31) toward the first contact member (30).   A heald frame according to claim 1, characterized in that the heald frame (14) comprises at least partly the flat side surfaces (23, 24).   3. A heald frame according to claim 1, wherein the side surfaces (23, 24) are oriented parallel to each other.   4. A heald frame according to claim 1, wherein the heald frame (14) has a rectangular cross section.   The heald frame according to any one of claims 1 to 4, wherein the planar body (26) is a metal plate.   A heald frame according to any one of the preceding claims, characterized in that the planar body (26) extends from one narrow side (21) to another narrow side (22).   7. A heald frame according to any one of the preceding claims, characterized in that the planar body (26) is open on at least one of the narrow sides (21, 22).   The heald frame according to any one of claims 1 to 7, characterized in that the planar body (26) is connected to the shaft rod (14) on the surface side.   9. A heald frame according to any one of the preceding claims, characterized in that the two abutment members (30, 31) have different lengths.   10. A heald frame according to any one of the preceding claims, characterized in that both abutment members (30, 31) are oriented longitudinally with respect to the shaft rod (14).   11. A heald frame according to any one of the preceding claims, characterized in that the two abutment members (30, 31) extend beyond the planar body (26).   The heald frame according to any one of claims 1 to 11, wherein the first abutting member (30) is firmly connected to the planar body (26).   The heald frame according to any one of claims 1 to 12, wherein the second contact member (31) is connected to the planar body (26) only at one end.   The heald frame according to any one of claims 1 to 13, wherein the second contact member (31) is movably connected to the planar body (26).   The contact member (30, 31) is attached, screwed, bonded, soldered or welded to the flat body (26). The described heald frame.

Images