JP6159499B2 - Connecting device for connecting the heddle frame and the frame driving mechanism - Google Patents

Description

  The present invention relates to a heald frame of a loom, and more particularly to a connecting device for connecting a heald frame and a frame driving mechanism. Such a connecting device is also called a shaft joint.

  A shaft joint for a heddle frame is known from Patent Document 1, for example. Such a shaft joint is provided to transmit the drive operation of the vertically moving drive rod mechanism to the vertically operating heald frame. Furthermore, it must be possible to release (remove) the shaft joint when necessary. For this purpose, Patent Document 1 is provided with several bearing carriers on the heald frame, and the bearing carriers are configured as a pair of screwed side surfaces and hold a wooden pin between them. . A ring having a hexagonal shape is attached to the wooden pin, and the ring can be rotated to the wooden pin. The hexagonal ring forms one of the joints on the side of the heald frame, and the joint on the side of the heald frame is provided with the joint on the side of the drive mechanism on the other side provided with a bar.

  Rings having a hexagonal profile have been found to be subject to wear during continuous heald frame operation. Specifically, this ring requires sufficient lubrication. Without this, one of the affected joints will soon be replaced. In that case, usually all bearing carriers, including hexagonal rings, are replaced. This ring forms a locking piece.

  U.S. Pat. No. 6,057,051 discloses a similar shaft joint consisting of a hexagonal ring, which, as before, is supported between two sides by a heald frame. This ring is made of a self-lubricating plastic material. Furthermore, a lubricating device in the form of an oiling means can be provided which acts on the hexagonal ring radially.

  If worn, all of the joints consisting of the side, shaft and hexagonal ring must be replaced as before.

  Even if lubrication is sufficient, wear on one side of the joint on the heald frame side will occur. If lubrication is insufficient, wear will progress.

U.S. Pat. No. 4,541,459 German Patent No. 601333753

  Accordingly, it is an object of the present invention to facilitate the maintenance of the shaft joint and allow repairs as needed.

  The connecting device of the present invention comprises a bearing carrier that connects to the heald frame. The bearing carrier holds a bearing for supporting the locking piece for rotation. The bearing carrier and the bearing are screwed together by means disposed between the bearing carrier and the bearing to hold the bearing to the bearing carrier. If necessary, the screw means can be released (loosened). An exchange groove is defined in the bearing carrier, through which the locking piece and its bearing can be guided out of the bearing carrier with the screw means released and returned. This is possible without the need for other operations on the bearing carrier, such as bending, removal or similar operations. If the bearing carrier consists of two side surfaces that are held a little apart from each other, the exchange groove is formed by two flat surfaces with the side surfaces arranged opposite to each other. The bearing with the locking piece can be withdrawn between planes transverse to the central axis of the bearing when the screw means is released. The flat surface has no barriers such as ribs, protrusions and beads that prevent the bearings and locking pieces from being pulled out.

  As a result, the locking piece and the bearing can be disconnected from the bearing carrier as required and further replaced as needed. There is no need to separate the bearing carrier from the heddle frame. This means that when the locking piece and bearing are worn, there is no need to discard and replace the shaft rod or side post, and thus the bearing carrier can be firmly connected to the shaft rod or side post. To do.

  The screw means is a so-called repair interface for the locking piece.

  The bearing carrier comprises at least one side, preferably two sides held parallel to each other at a relative distance, and the bearing with the locking piece is held between the sides. This side is preferably at least essentially flat on the side facing the bearing, so that when the screw means are released, the locking piece containing the bearing can be withdrawn from between the sides. The side surfaces are preferably at least essentially flat on their outer sides as well. For example, a screw means comprising at least one screw and one nut preferably has a head on the screw as well as a nut, the head being embedded in the side. The heads may be the same size or different sizes. They may be mirror symmetric with each other or different shapes.

  The side preferably has a conical or stepped opening to accommodate this head, and receives a correspondingly complementary head therewith. At least one of the two side openings has a circular profile to allow rotation of the head. The other side openings may be circular, but may alternatively be square or hexagonal non-circular, for example preventing rotation of the respective screw head or nut head. Alternatively, the screw head or the nut head rotating together may be caused by, for example, engaging means by meshing ribs on the contact surface of the side surface and the screw head or nut head. Can be prevented or suppressed.

  The screw means preferably extend through the center of the bearing having a corresponding through hole. Alternatively, the bearing may have a threaded hole in itself, for example a screw being screwed from both sides, the head of which is embedded in the side as before. Further variations are possible. The bearing is preferably a ring having a cylindrical outer surface on which the locking piece is rotatably seated with minimal play. The locking piece is made of a self-lubricating material such as a self-lubricating bronze alloy.

  The axial length of the bearing is preferably larger than that of the locking piece. The side of the bearing carrier fixes the locking piece seated on the bearing in the axial direction so that it can freely rotate in this way.

  In a modified embodiment, only a single side is provided, which side rests the bearing. In order to fix the locking piece in the axial direction, this bearing may be provided with a flange in the radial direction, for example, on the side facing away from the side surface.

  The locking piece is preferably a ring having a hexagonal profile, i.e. having six, preferably equally sized, flat facets. The ring is preferably closed on its entire circumference, i.e. it has no lubrication holes or lubrication ports. As a result, the other joint can be engaged at six different rotational positions. This can distribute the wear that occurs around the entire periphery of the locking piece, which is not the case and helps to increase its uptime.

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

It is a schematic explanatory drawing of the heald frame which has a drive rod mechanism and the shaft coupling arrange | positioned among them. It is a schematic side view of the connection device as a part of the shaft joint. It is another side view of the connection apparatus of FIG. FIG. 3 shows partly the interior of the connection device of FIG. 2 in connection with one side of the associated rod mechanism. It is sectional drawing of the connection apparatus of FIG. 2 and FIG. It is a figure of another Example of a connection apparatus. It is a figure of another Example of a connection apparatus.

  FIG. 1 is a schematic explanatory view of the heald frame 10 and the accompanying drive rod mechanism 11. A heddle frame 10 is provided to support a heald that moves the warp yarn up and down during the knitting process. The heald frame is provided with an upper shaft rod 12 and a lower heald rod 13 together with side posts 14 and 15. In addition, members not specifically shown, such as heald support rails, and the healds already described are provided.

  A drive rod mechanism 11 provided to drive the heddle frame 10, or another drive device such as a linear drive mechanism, for example, is connected to the heald frame 10 via shaft joints 16 and 17 instead. The shaft couplings 16, 17 are attached to the lower heald rod 13 or to the side posts 14, 15, for example. It is also possible to provide outer shaft couplings 16, 17, for example on the side supports 14, 15, and further shaft couplings on the shaft rod 13. When the drive rod mechanism 11 is composed of two or more drive devices, therefore, two or more shaft joints are required.

  The shaft joints 16 and 17 are preferably constructed as essentially the same, as are the additional joints. The following description of the shaft coupling 16 is thus illustrative of additional shaft couplings and alternative configurations thereof.

  FIG. 4 shows the details of the separated state of the shaft joint 16. This joint comprises one of the joints 18 on the heald frame side, which is again shown separately in FIGS. One side 18 of the joint on the hald side includes a bearing carrier 19, a bearing 20 and a locking piece 21 shown in FIG.

  A bearing carrier 19 connects the bearing 20 to the heald frame 10. For this purpose, the bearing carrier 19 consists of one side, preferably two sides 22, 23 which are arranged slightly parallel to each other. At least one side surface 22 or two side surfaces 22, 23 are connected to the heald frame 10 by suitable connection means 25. This may be, for example, a foot plate 25a screwed to the narrower side below the shaft rod. However, the side surfaces 22 and 23 can be directly connected to the heald frame 10 instead. For example, they can be welded, glued or glued to the flat side of the shaft rod 13. Alternatively, the side surfaces 22, 23 may be integral with the side struts 14 and / or 15 or welded, glued, glued or otherwise connected thereto.

  In particular, apart from its particular configuration, the bearing carrier 19 can also be permanently connected to the side posts 14, 15, to the shaft rod 13 or to different parts of the heald frame 10.

  The side surfaces 22 and 23 are preferably made of flat plates facing each other and parallel on the inside, and planes 22a and 23a are provided on the inside thereof. The bearing 20 and the locking piece 21 are held between these flat surfaces 22a and 23a. The flat surfaces 22 a and 23 a have a diameter larger than the largest radial length of the locking piece 21 and extend at least around the bearing 20. The planes 22 a, 23 a further extend to the bearing carrier 19, ie at least the edges of the side surfaces 22, 23, so as to partition the exchange groove 24. This replacement groove allows the bearing 20 and the locking piece 21 between the side surfaces 22 and 23 to be pulled out and pushed into the original state without deforming the side surfaces 22 and 23. The replacement groove 24 maintains at least its shape to ensure that no permanent side distortion occurs even when minimal elastic deformation is allowed.

  The bearing 20 can be represented by, for example, a circular bearing ring 26. The ring has a central opening having a cylindrical outer peripheral surface 27 and preferably a cylindrical inner peripheral surface 28. The outer peripheral surface 27 and the inner peripheral surface 28 preferably have no seams or the like. However, it is also possible to provide a smaller opening, for example, an opening in the form of a pocket or the like, on the outer peripheral surface 27, and a supply portion for lubricating oil, for example, oil or fat may be provided there.

  In addition, the bearing ring 26 has flat surfaces 29, 30 that abut the inside of the side surfaces 22, 23.

  The bearing ring 26 is preferably held against rotation between the side faces 22,23. The screw means 31 is used for fastening, and this screw means has a structure as apparent from FIG. The screw means 31 includes a screw 32 and a specially configured nut 33. The screw 32 has a flat head 35 with a conical surface 34 at its periphery, and the head has a flat appearance. This head 35 fits into an opening in the conical seating surface of the side surface 23 having a wall 36 adapted to the conical surface 34. As a result, the flat outer surface of the head portion 35 is located on the same plane as the outer side of the side surface 23.

  The screw 32 has a male threaded shaft 37 that is screwed into a female thread cut into the nut 33. The nut 33 also has a flat head 38. The head 38 has a conical surface 39 on its outer periphery. This head 38 fits into the opening in the conical seating surface of the side 22, and the wall 40 of this opening is a cone and conforms to the conical surface 39.

  The screw 32 and / or its nut 33 includes a fitting fastening member for connecting a tool. For example, for this purpose, the screw 32 may have a groove 41 in a hexagonal cross section into which a suitable hexagon key fits. When the screw 32 is tightened, the nut 33 can be held by frictional contact. It is also possible to provide a non-circular surface, for example a hexagonal surface (pyramidal surface) instead of the conical surface 39, in which case the wall 40 is appropriately shaped to fit it. Thereby, when the screw 32 is tightened, the nut 33 is prevented from rotating together due to the coupling by the meshing between the side surface 22 and the nut 33. Alternatively, the conical surface 39 may be radially provided with a hooked structure that interacts with the hooked structure of the wall 40 when the screw 32 is tightened, causing the nut 33 to rotate together. To prevent.

  Due to the screw means 31 used to clamp the bearing 20 in place between the side faces 22, 23, the locking piece 21 remains rotatable. Since this locking piece has an axial cross-sectional thickness slightly smaller than that of the bearing 20, it is attached between the side surfaces 22 and 23 with a minimum amount of play.

  The locking piece 21 is a ring having a hexagonal outer periphery, and is preferably made of a self-lubricating bronze alloy or another metal, or a plastic material, particularly a self-lubricating plastic material. The locking piece 21 preferably has a cylindrical inner peripheral surface 42. It sits on the outer peripheral surface 27 of the bearing ring 26 with minimal play. The inner peripheral surface 42 preferably has no seams. If necessary, a recess provided with a supply portion for lubricating oil, for example, grease, may be provided. The function of the shaft coupling 16 will be understood from FIG. Complementary to one side 18 of the joint on the heddle frame side, there is the other side 43 of the joint on the drive mechanism side. The latter has a mouth 44 that can be fitted between the side surfaces 22, 23, which is configured in a complementary manner with the locking piece 21, for example with a bar 45 that is biased in the closed position. .

  When one of the joints 18 and 43 moves together, the locking piece 21 having a hexagonal outer shape enters the mouth 44. For positioning the locking piece 21, any one of six possible rotational positions can be selected. The rotation position can also be selected so that the already used side surface rotates to a position where less force is applied. It is also possible to select a rotational position that minimizes radial play.

  As wear progresses, the play between the locking piece 21 and the bearing 20 usually increases. These two members can be replaced. Only the screw means 31 is loosened. The locking piece 21 and the bearing 20 can be extracted from between the side surfaces 22 and 23 without bending the side surfaces 22 and 23. Even if the sides 22, 23 are not completely flat on their inside, for example, slightly overhanging and adjoining the walls 36, 40, this overhang is slightly The external bending is small enough to be necessary, and when the bearing and coupling element 21 are pulled out, it remains in the range of elastic deformation of the side faces 22,23. In addition, the deviation from the inner plane of the side surfaces 22, 23 is not noticeable and the side surface is between the connecting means 25 and the locking piece 21.

  6 and 7 show a modified embodiment of one side 18 of the joint. To the extent that structurally or functionally consistent with the previously described embodiments, the above description using the same reference numerals will apply mutatis mutandis. Furthermore, the modifications described below can be easily applied to the embodiment of FIG.

  In FIG. 6, one or both conical surfaces 34, 39 are replaced by stepped surfaces. FIG. 6 shows a face 34 ′ having a stepped edge of the head 35. The outer peripheral surface of the nut 33 may be similarly configured if desired. The respective walls of the engaging holes of the side surfaces 22 and / or 23 are formed complementary, as in the previous example, and are therefore stepped open seating surfaces. Also in this example, the outer surfaces of the heads 35 and 38 are in the same plane as the outer sides of the respective side surfaces 22 and 23, and therefore are connected to the outer sides of the side surfaces without a step.

  FIG. 7 shows a modification of the embodiment. In this example, the nut 33 itself comprises a slot 46 for attachment of a fastener by fitting, such as a hex key. Regarding the aspects of the heads 35, 38, all of the above-mentioned variants can be used. Apart from that, the above description applies mutatis mutandis.

  The connecting device for connecting the heddle frame 10 and the drive rod mechanism 11 of the shaft drive mechanism includes a shaft joint 16 having one joint 18, and one of the joints includes a bearing 20 and a locking piece 21. The bearing 20 and the locking piece 21 can be removed from the bearing carrier 19 which is firmly connected to the heald frame 10. The locking piece 21 and the bearing 20 are preferably connected to the bearing carrier 19 by screw means 31 and can therefore be replaced separately. In order to maintain the shaft joint 16, the locking piece 21 and the bearing 20 can be exchanged in a simple manner. Complex lubrication devices, especially grease replenishing means, etc. can be omitted. This also simplifies the handling of the shaft joint 16, especially when both the joints 18, 43 are connected to each other. At that time, the rotational position of the locking piece 21 having a generally hexagonal outer shape is not important at all. Assembly errors that can occur when the locking piece includes a grease replenishing means that must be oriented in a particular way can thus be avoided.

DESCRIPTION OF SYMBOLS 10 Held frame 11 Drive rod mechanism 12 Upper shaft rod 13 Lower shaft rod 14 Left side support column 15 Right side support column 16, 17 Shaft joint 18 One side of joint on the heald frame side 19 Pieces 22 and 23 Side surface 24 Replacement groove 25 Connection means 25a Foot plate 26 Bearing ring 27 Outer peripheral surface 28 of bearing ring 26 Inner peripheral surface 29 and 30 of bearing ring 26 Screw ring 32 Screw 33 Nut 34 Conical surface 35 Head 36 Wall 37 Shaft 38 Nut 33 head 39 Conical surface 40 of head 38 Wall 41 Groove 42 Inner peripheral surface 43 One side of joint drive mechanism side 44 Port 45 Bar 46 Groove

Claims (13)

A bearing carrier (19) connected to the heddle frame (10) and including a bearing (20), the bearing carrier (19) comprising at least one side (22, 23), the side (22, 23) is flat with respect to the bearing (20) and the bearing carrier (19) defines a replacement groove (24);
A locking piece (21) having a polygonal cross section rotatably held by a bearing (20);
The bearing (20) to hold to the bearing carrier (19), becomes from a screw means (31) disposed between said bearing carrier (19) and the bearing (20), the screw The means (31) includes at least one screw (32) that does not protrude from the bearing carrier (19, 22, 23) and at least one nut (33) that does not protrude from the bearing carrier (19, 22, 23). including,
Connection device for those said heddle frame (10) connected to the shaft drive mechanism. Said screw means (31), the connection device according to claim 1, wherein comprising a bearing carrier (19, 22, 23) coplanar with at least one screw (32), characterized in that. The screw means (31) according to any of claims 1 or 2 , characterized in that it comprises at least one nut (33) which is coplanar with the bearing carrier (19 , 22, 23 ). The connecting device as described. Said bearing carrier (19), for receiving said screw means (31) has at least one conical opening or at least one stepped opening, it claim 1, wherein Connection device. 5. The screw means (31) according to claim 4 , characterized in that it has at least one head (35, 38) complementary to the conical opening or to the stepped opening. Connected device. The bearing (20) is a sliding bearing, that the connection device according to any one of claims 1 to 3, wherein. The bearing (20) has a ring (26) having at least one cylindrical outer peripheral surface (27) and at least one flat surface (29, 30), any one of claims 1 to 4, characterized in that The connection device according to 1. The connecting device according to claim 7 , wherein the ring (26) has an axial length larger than an axial length of the locking piece (21). The locking piece (21) connecting device according to any one of claims 1 to 6, wherein there is no seam, it throughout its circumference. The locking piece (21) is made of self-lubricating material, that the connection device according to any one of claims 1 to 7, characterized in. The locking piece (21) connecting device according to any one of claims 1 to 8, characterized in that, with a central opening. 12. The connecting device according to claim 11 , wherein the central opening has a cylindrical wall surface (42). The locking piece (21) has a central opening having a cylindrical wall surface (42) , and the cylindrical wall surface (42) is provided to receive the ring (26). The connection device according to claim 7 or 8 .

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