KR101074313B1

KR101074313B1 - Shaft rod for a heald shaft

Info

Publication number: KR101074313B1
Application number: KR1020050070922A
Authority: KR
Inventors: 슈테판 드로페; 요한네스 브루스케; 카를-하인츠 게징
Original assignee: 그로츠-베케르트 카게
Priority date: 2004-08-04
Filing date: 2005-08-03
Publication date: 2011-10-17
Also published as: DE502005003706D1; CN1733996B; DE102004037717B3; KR20060049063A; CN1733996A; JP2006045760A; EP1624097A3; EP1624097B1; EP1624097A2; JP4221400B2

Abstract

According to the invention, the shaft rod 1 consists of a profile element 2 and a shaft rod 3 which is fixed to the profile element 2 by means of a rubber band 21 or a suitable spring element. In addition to obtaining a device of easy manufacture, stability and low cost, the shaft rod 3 is supported by a vibration damping method.

Description

Shaft Rod for Held Shaft {SHAFT ROD FOR A HEALD SHAFT}

1 is a fragmentary perspective view of a shaft rod.

FIG. 2 is a fragmentary cross sectional view of the shaft load of FIG. 1 with the hed partially shown in side elevation. FIG.

3 is a cross sectional view of a modified embodiment of a shaft rod with a heald;

4 shows another embodiment of a shaft rod shown with a damped shaft rod support.

5 shows the shaft rod of FIG. 2 when inserting a spring element.

6 shows the elastic in a relaxed and relaxed state serving as a spring element.

7 shows another example of a shaft rod having a deformable groove shown before the shaft rod is fixed.

8 shows the shaft rod of FIG. 7 in a fully mounted state.

Explanation of symbols on the main parts of the drawings

1: shaft rod 2: profile element

3: shaft rod 4: carrier part

5: (wall) part 6: end eyelets

7: Held 8: Flat side

9: fixed ribs 11, 12: flank

13: Shoulder 14: Home

15, 16: wall 17, 18: seating surface

19: spring element 21, 23: rubber band

22: groove 24, 25: stepped portion

26: floor 27, 28: area

29: Groove 31: Wall

32: step 33: floor

34, 35: part 36 (ring-shaped) bead

37, 38: damping element 39: extension

41: fixed rib 42: impact surface

43: end 44: seating surface

45: (shaft bar) position 46: end

The present invention relates to a shaft rod for a hex shaft of a loom.

Looms, which are generally used in the weaving industry, generally include a hex shaft, which is a frame structure with upper and lower shaft rods extending horizontally. Two parallelly arranged shaft rods are connected to each other by end binders at each end. The shaft rod can be, for example, an extruded aluminum profile element. The heald shaft has a plurality of heels with eyelets formed about the center of each bend screw. The heald is secured to the shaft rods that form part of the upper shaft rod and the lower shaft rod, respectively. The shaft rod is, for example, a planar steel profile in which the heald is positioned by the end eyelet. The shaft rod is for example riveted to the aluminum profile body.

In order to form a shed, the bending screw must be removed upwards or downwards out of the bending screw plane. For removal of the above, the heald shaft is moved up or down. The operation is executed very quickly at the operating speed. The quick run and the necessary clearance of the heald on the shaft rod cause the heald and shaft rod to wear easily. Thus, the shaft rod should be made of a wear resistant material such as steel as mentioned above. On the other hand, the heald shaft should be as light as possible, so the shaft rod is made of as light a material as possible and connected to the shaft rod.

It is an object of the present invention to provide a shaft rod that is easily removable when needed.

This object is achieved with a shaft rod as described in claim 1.

The shaft rod according to the invention comprises a shaft element provided with a fixing rib and a profile element having at least one elongated groove. The purpose of the fixing rib is to be inserted into the groove and clamped tightly in the groove. In addition, the shaft rod is associated with an elongated spring element that is inserted into the groove to securely clamp the retaining rib inside the groove. As the spring element, an elongated elastomeric element, such as a rubber band, is preferably used. In the relaxed state, the rubber band has a cross section larger than the width of the space in the hollow groove without the fixing ribs. The elastic is stretchable, and if stretched in the longitudinal direction, the cross section of the elastic is reduced. When so stretched, the rubber band has a cross section that is smaller than the width of the space in the hollow groove without the fixing ribs. The spring element consisting of a rubber band acts as a simple and generally removable fastening element, which is inserted into the groove in a pre-stretched longitudinal direction and then relaxed to secure the shaft rod against the profile element. Thus, the rubber band provides a fixed seat for the shaft rod on the profile element. In addition, the spring element composed of a rubber band may have a vibration damping effect. The stress exerted by the rubber band is such that it prevents the rubber rod from moving the shaft rod on the profile element. This applies to all forces acting on the shaft rods during normal operation.

As described above, the rubber band may have a vibration absorbing function, thereby having a damping effect. In particular, high frequency vibration is attenuated at the connection between the shaft rod and the profile element of the shaft rod.

Preferably the profile element is an extruded profile element, for example made of a light metal such as aluminum. The groove formed in the profile element preferably has a slotted opening extending in the longitudinal direction, through which the fixing rib can enter the inner space of the groove. In this shape, the fixing ribs also extend along the entire length of the shaft rod. The shaft rod and profile element can be several meters.

The groove is preferably undercut, which means that the width of the slotted opening is smaller than the width of the groove interior space. The shaft rod can be positioned against the profile element at both edges of the slotted inlet. The arrangement for this position provides a strip-like seating surface, which can be, for example, a flat surface located in a common plane or in planes mutually offset.

One or more seating surfaces for the securing ribs are formed in the grooves. The seating surface can be planar or profiled. In the case of profiling, a shape locking connection is made between the shaft rod or more specifically the stationary rib and the profile element.

The seating surface and the stationary rib can be directly bonded to each other. However, it is also possible to place another functional element, for example a damping element for the shaft rod or a damping element for the held held by the shaft rod, between these seating surfaces and the stationary rib. In this way, the spring element can serve several functions because it tightly clamps not only the shaft rod but also other elements.

The spring element, which is preferably a rubber band, may have a circular cross section that is easy to assemble because it is the simplest shape and does not require attention to the angle and slight twist of the rubber band. Properly configured internal shapes of the fixing ribs and the grooves may also be used, for example, profiled rubber bands having cross sections such as squares, rectangles, triangles and the like. In this way in some cases the seating of the shaft rods on the profile elements can be further improved.

It is also possible to provide several spring elements for holding the retaining ribs in or within the profile element. In this way, the damping effect can be greatly increased. For example, two rubber bands may be used, one of which may be placed on one side of the fixing rib and the other on the other side of the fixing rib.

In order to facilitate the relaxation of the rubber band still in the groove while in the extended state, a lubricant such as talc, silicone grease or the like may be provided to the rubber band. This does not affect the firm seating of the shaft rods on the profile elements. Only the corresponding surfaces of the fixing ribs and / or profile elements present in the grooves may be provided with or coated with a friction reducing material which facilitates the relaxation of the rubber band.

Lubricants may also be used that dissolve the surface of the rubber band. Such lubricants can be, for example, mineral oils which facilitate the insertion of the rubber band into the groove, facilitate the relaxation of the rubber band and also allow the rubber band to be permanently attached to the surface in the groove. As a result of this configuration, the shaft rod is fixed to the profile element substantially inseparably.

The length of the rubber band or other spring element is substantially the same as the length of the shaft rod and the profile element. In some cases, the rubber band may not be fully relaxed after being inserted into the groove, in which case a part of the rubber band remains outside the groove, ie a part of the rubber band protrudes at least at one end. However, the end of the rubber band slowly enters the groove due to the vibration of the shaft rod occurring during operation.

In another example, it is also possible to insert the rubber band into the groove by local pressure. This can be done, for example, in embodiments in which the shaft rod is not completely covered by the slotted inlet of the groove. With this configuration, it is possible to press the rubber band into the groove by first using the finger-shaped blades or rollers that move the rubber band outside and then move along the rubber band. As another embodiment, the groove may provide a profile element having one or more deformable walls. In this case, the rubber band can enter the groove through the slotted inlet in a relaxed state, and then bend the wall of the groove inward. This can be done, for example, by moving the roller at a predetermined pressure along the wall such that the wall bends towards the spring element. In such an embodiment, the shaft rod is also removable. For example, one end of the rubber band can be grasped and pulled in the longitudinal direction to remove it from the groove. The stretched portion of the rubber band is reduced in cross section and separated from the groove. The rubber band can be reinserted into the groove in the stretched state, and the shaft rod is fixed again when relaxed.

Further details of preferred embodiments of the invention are set forth in the drawings, the drawings, or the specification with reference to the claims.

Some embodiments are shown in the figures.

1 shows a shaft rod 1 comprising a profile element 2 and a shaft rod 3 supported by it. The profile element 2 is for example made of an extruded aluminum profile with a box-shaped hollow carrier part 4 at the top. A wall-shaped portion 5 supporting the shaft rod 3 extends from the hollow carrier portion. The shaft rod 3 is made of steel, for example, and serves to receive the heald. 2 shows the end eyelet 6 of the heald 7, part of which is shown. As shown, the eyelets 6 are located in the shaft rod 3 with a gap.

The shaft rod 3 is made of steel. This shaft rod is detachably retained on the profile element 2. For this purpose the shaft rod 3 has a fixing rib 9 which projects approximately perpendicularly from the flat rear face 8 of the shaft rod 3. The fixed rib 9 can have other suitable shape. In the present embodiment, the fixed rib 9 is provided with a planar flank 11 perpendicular to the flat rear face 8, and on the opposite side of the planar flank, for example, a shape fitting engagement of the fixed rib 9 is provided. There is a flank 12 which is provided with a stepped shoulder 13 which serves for this purpose. The shoulder 13 faces the flat rear face 8, in other words the fixed rib 9 is slightly thinner in the vicinity of the flat rear face 8 than in the farther part.

The stationary rib 9 enters into the groove 14 formed along the entire length of the profile element 2. The boundary of the groove 14 is defined, for example, by two walls 15, 16 formed perpendicularly from the wall 5 and at the ends of these walls a strip-shaped flat seating for the flat rear face 8 of the shaft rod 3. There are surfaces 17 and 18. The seating surface may have a flat finish surface for accurate positioning of the shaft rods. In order to securely clamp the fixing rib 9 in the groove 14, a spring element 19, consisting of a rubber band 21 as shown in FIG. 6, is provided separately. The rubber band 21 has, for example, a circular cross section and has an elongated cylindrical shape. The elastic 21 is extensible to a considerable length. In the relaxed state (shown on the right side in FIG. 6), the length of this rubber band is approximately equal to the length in the shaft rod 3. The rubber band can be several centimeters longer than the profile element, so that the end can be grabbed out of the groove 14. The cross section of the rubber band 21 is larger than the free space between the flank 11 and the wall 16 (see FIG. 2). If the elastic band 21 is stretched, the cross section of the rubber band is reduced while the length of the rubber band is increased. The elastic string 21 is such that when it is stretched, the cross section of the elastic cord becomes smaller than the distance between the flank 11 and the wall 16. The rubber band 21 has a high recovery force. When the elastic 21 is relaxed, it contracts to a length corresponding to the original length of the elastic and also returns to the original size of the cross section.

Mounting of the shaft rod 1 is performed as follows.

In order to fix the shaft rod 3 to the profile element 2, the fixing rib 9 of the shaft rod 3 is inserted into the groove 14. In this operation, the shoulder 13 is engaged behind the corresponding stepped portion formed in the flange 12 in a rectangle. The shoulder may also be ramp shaped to give the wedge a predetermined wedge effect. The wedge effect can be used to press the flat rear face 8 against the seating surfaces 17, 18. The step may be formed into an extruded profile and may remain rough or may be precision machined.

After fitting the shaft rod 3 to the profile element as described above, the rubber band 21 is stretched, for example, as shown in FIG. 6, and inserted into the groove 14 in this stretched state. This operation can be carried out, for example, by connecting the front end of the rubber band to a wire or other suitable pulling means and the other end firmly fixed in the extended state. In this way, the rubber band 21 can be pulled in the longitudinal direction into the groove 14. When the elastic cord 21 is pulled into the groove 14 so that both ends of the rubber string cross the front opening of the groove 14 to the same extent, the state shown in FIG. 5 is reached. That is, the rubber band 21 is located in the groove 14 with a gap. Once the elastic 21 is relaxed, the elastic contracts in the longitudinal direction and expands in the radial direction until the state shown in FIG. 2 is reached, at which time the elastic has a fixed rib 9 against the wall 15. Clamping firmly. The step portion 13 secures the shaft rod 3 to the profile element 2 in a shape fixed manner.

In the above state, the shaft rod 3 is firmly fixed. The position of the fixing rib 9 between the wall 15 and the flank 12 is permanently held by the rubber band 21. The force exerted on the shaft rod 3 by the heald 7 cannot thus position the shaft rod 3 with respect to the profile element 2. For example, the vibration generated by the front and rear impact of the end eyelet 6 acting on the shaft rod 3 is damped by the rubber band 21.

When disassembling, the rubber band 21 is pulled out. The stretched rubber band stretches and contracts in the radial direction. As a result, this rubber band is separated from the seating surface of each of the fixing ribs 9 and the walls 16. The elongated portion progresses gradually along the entire length of the elastic cord 21 until the elastic cord is fully elongated and can completely exit in the axial direction from the groove 14. In this way, the shaft rod 3 is free again, so that this shaft rod can be replaced or serviced and reinstalled.

3 shows a variant embodiment of the shaft bar 1. The first variant relates to the shape of the shaft rod 3 itself. The shaft rod 3 of FIG. 2 is adapted to the C-shaped end eyelet, and the shaft rod 3 of FIG. 3 is for receiving the J-shaped end eyelet 6. To accommodate the J-shaped end eyelet, the shaft rod 3 has a grooved groove 22 wide at the rear side. In attachment, the principle shown in FIG. 2 may be used. However, the principle shown in FIG. 3 can also be used, in which the fixing ribs 9 are held by two rubber bands 21, 23 in the groove 14. In this embodiment, the walls 15, 16 are provided with slightly larger steps 24, 25. However, it is the bottom 26 of the groove 14, not the inside of the wall 15 as in the embodiment of FIG. 2, that serves as a seating surface for the fixing rib 9. In this embodiment, the floor is divided into two strip-shaped regions that are obtuse with each other. However, the bottom may also be flat or have a step. The fixed rib 9 has an enlarged end having a surface facing the bottom 26 in a direction away from the fixed rib 9. This surface is also formed by two strip-like planar regions 27 and 28 which are obtuse with each other. Regions 27 and 28 are formed with surfaces that coincide with the surface of the bottom 26. The rubber bands 21, 23 urge the fixed ribs 9 against the bottom 26 to prevent the shaft rod 3 from moving in the profile element 2. However, a gap is formed between the bottom 26 and the fixed rib 9 (more specifically the enlarged end of this rib) to press the flat rear face 8 of the shaft rod 3 against the seating surfaces 17, 18. You can put it. Modified embodiments may be provided with shape-locking means on the seating surfaces 17, 18. Such shape-locking means can be configured by forming the seating surfaces 17, 18 at an obtuse angle with one another, in which case corresponding surface regions are formed in the shaft rod 3 instead of the flat rear face 8. Either or both of the seating surfaces 17, 18 may be provided in the longitudinal direction with ribs or steps which will have a shape locking relationship with the corresponding structure in the flat rear face 8 of the shaft rod 3. This rib or step serves to position the shaft rod.

4 shows another embodiment of the shaft rod 1. The profile element 2 has a groove 14 open in a direction parallel to the wall 5, which wall 5 itself becomes a wall defining the groove 14. The wall 5 is internally profiled with a groove 29 which is open in the longitudinal direction. The wall 5 faces the profiled wall 31 such that a step 32 is formed adjacent to the bottom 33 of the groove 14. The wall 31 is bent inward near the slotted opening facing downward of the groove 14.

In this embodiment, the shaft rod 3 is made of, for example, sheet metal (for example steel). The shaft rod has a hooked portion 34 for receiving the heald. The straight portion 35 provided with the beads 36 extends into the groove 14. Bead 36 is associated with step 32. Between the step 32 and the beads 36, a rod-like or flat strip-shaped damping element 37 is located. In addition, a damping element 38 can be arranged between the wall 5 and the straight portion 35, for example serving as a held damper. The rubber band 21 serves to fix the shaft rod 3 in the manner described above. The rubber band 21 on the one hand presses the beads 36 against the damping element 37 such that the damping element 37 is clamped against the step 32, and on the other hand the plate of the damping element 38. The straight portion 35 of the shaft rod 3 is pressed against the mold extension 39. The damping member 38 may be provided with a fixed rib 41 entering the groove 29. The extension 39 has a head in which the cross section of the damping element 38 is approximately trapezoidal. This head forms a buffer for the end eyelet of the heald and also has an impact surface 42 that is directed towards the end eyelet of the heald and can contact the heald. Damping element 38 is made of, for example, a vibration damping synthetic material. The same is true of the damping element 37.

8 shows another embodiment of the shaft rod 1 according to the invention. The shaft rod 3 in this embodiment has an angled (bend) lower end 43. At this angled end there is a seating surface 44 for the rubber band 21, which has two strip-like seating areas which are approximately perpendicular to each other. The opposing wall 16 is bent toward the rubber band so that the inlet of the groove 14 is narrowed. In contrast, the wall 15 is straight and extends approximately vertically from the wall 5. As described above, the rubber band 21 can be inserted into the groove 14 in an extended state and then relaxed, in which the cross section of the rubber band increases again and the end 43 is formed by the wall 5, 15) is pressed against. The rubber band 21 is engaged with the bent end of the wall 16.

In this embodiment, the rubber band 21 is not covered or partially covered by the shaft rod, similar to the embodiment of FIG. 4. For this reason, the rubber band can also be pressurized into the groove 14 in the radial direction through an uncovered slotted opening. For this purpose, the rubber band is first located between one point 45 of the shaft rod and the end 46 of the wall 16 and, for example, in a slotted opening. The rubber band 21 can then be pressed by one or more rollers and pressed into the groove 14. The roller is pressed along the length of the rubber band in turn into the groove 14 while moving along the length of the rubber band 21.

As another example, it is also possible to modify the profile element 2 appropriately. In FIG. 7, the first undeformed profile element 2 is shown, both walls 15, 16 of which are straight and oriented approximately perpendicular to the wall 5. When the rubber band 21 is inserted into the groove 14 (there is no undercut yet), the rubber band is loosely laid in the groove 14 without bias. Now, for example, if the pressure roller is moved along the wall 16 and the wall 16 is bent inward, ie deformed, the wall 16 is shaped as shown in FIG. 8. In this way, the desired clamping of the shaft rod 3 is once again made.

According to the invention, the shaft rod 1 consists of a profile element 2 and a shaft rod 3 which is fixed to the profile element 2 with a rubber band 21 or a suitable spring element.

According to the present invention, besides being able to obtain an apparatus of easy manufacture, stability and low cost, the shaft rod 3 is supported by the vibration damping method.

Claims

As a shaft rod 1 for a heald frame of a weaving machine,

A profile element (2) having an elongated groove (14),

A shaft rod (3) having a fixed rib (9) entered in the groove (14) in an installed state, and

And an elongated spring element (19) disposed in the groove (14) for firmly clamping the fixing rib (9).

2. The shaft rod according to claim 1, wherein the profile element (2) is an extruded profile.

2. The shaft rod as claimed in claim 1, wherein the groove (14) has a seating surface for the stationary rib (9).

4. The shaft rod according to claim 3, wherein the seating surface and the fixed rib (9) have a profile that fits each other.

4. A shaft rod as claimed in claim 3, wherein at least one damping element (37, 38) is disposed between the seating surface and the stationary rib.

2. The shaft rod as claimed in claim 1, wherein the groove (14) has a slotted inlet having a width smaller than the width in the groove (14).

2. The shaft rod as claimed in claim 1, wherein the spring element is stretchable in the longitudinal direction and is reduced in cross section when stretched.

2. The shaft rod according to claim 1, wherein the spring element (19) is an elongated elastomer.

2. The shaft rod as claimed in claim 1, wherein the spring element (19) has a circular cross section in a relaxed state.

After the fixing rib 9 is inserted into the groove 14, the spring element 19 is inserted into the groove 14 with the spring element 19 extended, and then the spring element 19 is relaxed to extend in the longitudinal direction. 10. A method of mounting the shaft rod according to claim 7, characterized in that the fixed ribs (9) are firmly clamped by contraction and expansion laterally.