CN102216506A - Device for holding a shaft end and weaving machine - Google Patents

Abstract

Device for holding a shaft end (5) comprising a first bearing element (6) and a bearing element (7) movable relative thereto that is moveable between a holding position in which the shaft end (5) is held and a release position in which the shaft end (5) is free, whereby the movable bearing element (7) is attached to a pivotably mounted arm (10) that has a running surface (12) that is combined with a running surface (18) of a lever (15) that holds the arm (10) in the holding position. Weaving machine comprising such a device.

Description

Devices and looms for holding shaft ends

technical field

The invention relates to a device for holding a shaft end, wherein said device comprises a first support element and a support element movable relative thereto, said support element being movable between a holding position in which the shaft end is held and a release position in which the shaft end is free to move between. The shaft end can be part of the warp beam or the cloth take-up roll of the loom.

Background technique

Such a device is known, for example, from EP 414 291 A1 and is used to hold the shaft end of a warp beam or cloth roll in a loom so that the shaft end can be installed in or removed from the loom without major difficulty . A disadvantage of this device is that it involves relatively bulky and expensive mechanisms for moving the clamping elements.

Contents of the invention

The object of the present invention is to provide a simple construction device of the above-mentioned type which is reliable and easy to handle.

To achieve this object, the device according to the invention comprises a mobile bearing element attached to a pivotally mounted arm having a running surface that combines with that of the lever so that the arm can be held in the holding position.

The device is easily operated by means of a lever that can interact with the arm. The shaped or profiled running surfaces of the arms and levers can be easily implemented such that forces acting in radial direction on the shaft ends cannot move the movably mounted support element together with the pivotally mounted arm out of the holding position. The arm with the movably mounted support element can also leave the holding position only when the lever is moved out of its holding position. By the interaction between the running surface of the arm and the running surface of the lever, it is possible for the arm to be brought into and held in the holding position.

According to one embodiment, the running surface of the arm and the running surface of the lever combining the arm running surface are arranged such that when the lever is moved out of the holding position, the force between the lever and the arm first increases and decreases again with further movement. This means that the arm and the lever can thereby form an eccentric mechanism when in the holding position. This is advantageous for holding the pivotably mounted bearing element in the holding position. Thereby, both the lever and the arm are elastically deformable during movement out and into the holding position. As a result, an eccentric mechanism is formed by the running surface of the arm and the running surface of the lever, allowing the arm to be held in the holding position.

According to one embodiment, the arm and the lever are connected by a spring. This allows wherein the arm follows the lever when commanded by the lever, even when the running surfaces of the arm and the lever do not interact with each other. The spring also allows to hold the arm in the holding position and to force the arm and the lever towards each other. The spring can thereby be mounted between the lever and the arm, so that when the lever is moved out of the holding position, the force of the spring between the lever and the arm first increases and decreases again with further movement. This allows the arm and the lever to be pulled towards each other in the holding position and to be in a so-called eccentric position by the spring in the holding position. An eccentric mechanism is thus formed by the spring which allows the arm to be held in the holding position.

According to one embodiment, the stop on the lever and the stop on the arm can contact each other in the holding position. This allows determining the relative position of the arm and the lever in the holding position without requiring other elements.

According to one embodiment, the device comprises a frame to which the arm and the lever are attached by respective pivots, the pivot for the arm and the pivot for the lever being mounted parallel to the held shaft end. This is advantageous for keeping the shaft end in the device.

The invention also relates to a weaving machine comprising a device according to the invention.

Description of drawings

Further features and advantages of the invention are shown in the following description of the embodiments shown in the drawings.

Figure 1 shows a perspective view of the device according to the invention for a weaving machine in a holding position.

Fig. 2 shows a side view of the device in Fig. 1 along arrow F2 in Fig. 1 with the shaft end held in a holding position.

Fig. 3 shows a side view of the device in Fig. 1 along arrow F3 in Fig. 1 with the shaft end held in the holding position.

Fig. 4 shows a side view of Fig. 3 in a position between the holding position and the releasing position.

Figure 5 shows a side view of Figure 3 in a released position.

Detailed ways

Figures 1-5 show a device 1 according to the invention comprising a frame 2 to which a support 3 (also referred to as a support device) is attached. The frame 2 is attached to or forms part of a side part of the loom. The bearing surface 4 is arranged close to the support 3 to guide the shaft end 5 to be held to the support 3 . The shaft end 5 thereby forms the part to be held in the support and may be part of a warp beam, cloth roll or element for a weaving or textile machine. The support 3 of the device 1 for holding the shaft end 5 comprises a first stationary arrangement support element 6 and a second mobile arrangement support element 7 which is movable relative to the stationary installation support element 6 . The bearing element 7 is thereby movable between a holding position, in which the shaft end 5 is held in the support 3, and a release position, in which the shaft end 5 is free in the region of the support 3 , which means that it is not held in the support 3 .

The support element 6 is mounted in the frame 2 in the angular region between the horizontally arranged part 8 and the vertically arranged part 9 of the frame 2 . The support element 6 may be glued, clamped, welded or fastened to the frame 2 by other known means. In the illustrated embodiment, the support element 6 is substantially formed by a cylindrical section which is connected approximately tangentially to the support surface 4 . This may allow the shaft end 5 to be fitted into or removed from the support element 6 . The support surface 4 may comprise a plastic element, may be fastened by means of a threaded connection into the portion 8 of the frame 2 and extends substantially parallel to the portion 8 .

The mobile bearing element 7 is attached to a pivotally mounted arm 10 . The arm 10 is attached to the part 9 of the frame 2 by a pivot 11 . The pivot 11 for the arm 10 is mounted parallel to the shaft end 5 to be held. On the side facing the movement-arranged bearing element 7 , the arm 10 has a running surface 12 which has a shaped or cam-shaped form. The support element 7 can be attached to the arm 10 by means of a bolt connection 13 . The bolt connection 13 comprises for example a bolt extending with some play through a hole in the arm 10 and a hole in the support element 7 , whereby the bolt cooperates with a nut to attach the arm 10 to the support element 7 . The pivot 11 may be formed by a bolt 14 extending with limited play through a hole in the arm 10 and screwable into the portion 9 of the frame 2 .

The device 1 also comprises a pivotally mounted lever 15, also called a holding arm. The lever 15 is connected via a pivot 16 to a collar 17 of the part 9 of the frame 2 . The pivot 16 for the lever 15 is arranged parallel to the shaft end 5 to be held. The pivot 16 is thereby also mounted parallel to the pivot 11 for the arm 10 .

The lever 15 is provided with a running surface 18 having a shaped or profiled form. The running surface 12 of the arm 10 and the running surface 18 of the lever 15 cooperate with each other and allow the arm 10 to be placed and held in the holding position by means of the lever 15 . The pivot 16 may be formed by a bolt 19 extending with limited play through a hole in the lever 15 and screwable to the part 9 of the frame 2 .

The device 1 also comprises a spring 20 which can connect the arm 10 and the lever 15 . The spring 20 can force the arm 10 and the lever 15 towards each other. The spring 20 can be implemented with a spring system or spring element, and in the illustrated embodiment comprises a tension spring. The spring 20 is thereby mounted between an element 21 (eg a bolt) attached to the arm 10 and an element 22 (eg a bolt) attached to the lever 15 . The lever 15 has a stop 23 which can interact with a stop 24 on the arm 10 . The stopper 23 and the stopper 24 are to contact each other in the holding position. The relative position of the support element 6 and the support element 7 in the holding position can be adjusted by using the play of the bolt connection 13 by which the support element 7 is attached to the arm 10 . The force holding or clamping the shaft end 5 in the support 3 can be set by adjusting the relative positions of the support element 7 and the arm 10 after relative positioning of the stops 23 and 24 . The stops 23 , 24 also allow the shaft end 5 to be held in the support 3 , so that the shaft end 5 can be locked with a certain play and for example still turnable in the support 3 .

The lever 15 comprises a lever arm 25 which can extend substantially parallel to the bearing surface 4 in the holding position. The lever arm 25 enables an operator to move the lever 15 and arm 10 from the hold position to the release position and from the release position to the hold position. For this purpose, the arm 10 and the lever 15 are elastically deformable and/or mountable in an elastically deformable manner. In the illustrated embodiment, the surface of the stop 23 is positioned substantially perpendicularly on the lower surface of the lever arm 25 .

The running surface 12 of the arm 10 and the running surface 18 of the lever 15 (which cooperate with the running surface 12 of the arm 10) are arranged such that when the lever 15 is moved from the holding position shown in FIG. The force first increases and decreases again with further movement. This is achieved because the running surface 12 and the running surface 18 can thereby form an over-center mechanism, more specifically because the distance along the line 26 between the pivot 16 and the contact point 27 in FIG. 2 is greater than that of the pivot 16 The tangential distance along line 28 from running surface 12 where running surface 12 contacts running surface 18 at contact point 27 .

The spring 20 is thereby preferably arranged between the lever 15 and the arm 10 such that when the lever 15 is moved out of the holding position, the force of the spring 20 between the lever 15 and the arm 10 first increases and decreases again when it is moved further. This can be achieved because in FIG. 3 the wire 29 moves over the wire 30 in order to reach the holding position shown in FIG. 20, the line 30 passes through the axis of the element 21 and holds the axis of the shaft end 5.

During movement from the release position shown in FIG. 5 via the position shown in FIG. 4 to the holding position shown in FIG. 3 , the running surface 12 contacts the running surface 18 , as a result of which the arm 12 is moved by the lever 15 into the holding position. During the movement of the lever 15 from the holding position via the position in FIG. 4 to the release position, the arm 12 is moved together with the lever 15 by means of the spring 20 .

It is obvious that in order to hold a warp beam or cloth roll on a loom, preferably two devices 1 according to the invention are provided, each capable of holding a shaft end 5 of a warp beam or cloth roll. According to a variant not shown, the lever arm 25 can be angled with respect to the bearing surface 4 to allow the shaft end 5 to be guided towards the bearing 3 between the lever arm 25 and the bearing surface 4 .

Arm 10 and lever 15 can be formed, for example, by shaped plates. Thereby, according to the invention, the edge of such a profiled plate can form the running surface 12 or 18 . Such plates can be produced, for example, by laser cutting. The manufacture of the arm 10 and the lever 15 as a plate allows a simple construction and in particular the running surface to be manufactured in a simple manner.

The device according to the invention also offers the advantage that no tools are required to open or close the device 1 . Furthermore, the device 1 essentially comprises an easy-to-manufacture pivotable mounting arm 10 for the support element 7 , an easy-to-manufacture pivotable mounting lever 15 , and a spring 20 .

The device according to the invention can be applied in different types of machines, such as textile machines, in particular any type of weaving machine or similar textile machine comprising components designed to be held at the end of the shaft, such as warp beams or cloth rolls. in the plane. This could be an air jet loom, rapier loom, water jet loom, projectile loom, some other type of loom, warping machine, knitting machine or some other type of textile machine.

However, the device according to the invention is not limited to the embodiments described as examples and shown in the drawings. The device can also be implemented in other variant embodiments, configurations and dimensions within the scope of protection of the claims. Combinations of the shown embodiments are also possible, which fall within the scope of protection of the claims.

Claims (10)

1. device that is used to keep axle head (5), described device comprises first supporting member (6) and can be with respect to its supporting member that moves (7), described supporting member (7) can move between maintained holding position of axle head (5) and the unfixed off-position of axle head (5), it is characterized in that, moving support element (7) is attached to the arm (10) that can install pivotally, described arm (10) has operation surface (12), the operation surface (18) of this operation surface (12) combined lever (15), thus arm (10) is remained on the holding position.

2. device according to claim 1, it is characterized in that, the operation surface (18) of lever (15) on the operation surface (12) of the operation surface (12) of arm (10) and combination arm (10) is arranged such that when lever (15) when shifting out the holding position, and the power between lever (15) and the arm (10) at first increases and along with further mobile and minimizing once more.

3. device according to claim 1 and 2 is characterized in that, arm (10) is connected by spring (20) with lever (15).

4. device according to claim 3, it is characterized in that, spring (20) is arranged between lever (15) and the arm (10), make that when lever (15) when shifting out the holding position power of the spring (20) between lever (15) and the arm (10) at first increases and along with further mobile and minimizing once more.

5. according to each described device among the claim 1-4, it is characterized in that stop part (23) on the lever (15) and the stop part (24) on the arm (10) contact with each other in the holding position.

6. according to each described device among the claim 1-5, it is characterized in that, device (1) comprises framework (2), and arm (10) is attached to described framework (2) by pivot (11), and the pivot (11) that is used for arm (10) is arranged to be parallel to maintained axle head (5).

7. according to each described device among the claim 1-6, it is characterized in that, device (1) comprises framework (2), and lever (15) is attached to described framework (2) by pivot (16), and the pivot (16) that wherein is used for lever (15) is arranged to be parallel to maintained axle head (5).

8. according to each described device among the claim 1-7, it is characterized in that axle head (5) is a part that is used for the cloth beam of loom.

9. according to each described device among the claim 1-8, it is characterized in that axle head (5) is the part through axle that is used for loom.

10. a loom is characterized in that, described loom comprises according to each described device (1) among the claim 1-9.

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