JP5818525B2 - Locking device for spinning or twisting spindle - Google Patents

Description

  The present invention is a locking device for a spinning spindle or twisting spindle of a textile machine, the spinning spindle or twisting spindle having a spindle upper part, the spindle upper part having a drive wheel. And is rotatably supported in the lower part of the spindle, and the lower part of the spindle has a flange that can be fixed to the spindle rail of the textile machine, and the locking device is attached to the flange. The locking device is of a type consisting of a vertically arranged holder and a lock flap that is pivotably supported.

  Locking devices for spinning or twisting spindles of textile machines are known and are described in detail in numerous patent documents.

  German Offenlegungsschrift 39 34 843 describes, for example, a spinning or twisting spindle having a spindle upper part which is rotatably mounted on the lower part of the spindle, as is commonly used. The upper part of the spindle serves to accommodate the spinning cup winding. The upper part of the spindle is equipped with a drive wheel. This drive whirl drives the upper part of the spindle during operation so that it can be loaded by a tangential belt. A locking device is arranged under the flange provided on the lower part of the spindle, and this locking device forms an anti-extraction device for preventing unintentional withdrawal of the upper part of the spindle from the lower part of the spindle. doing.

  This locking device has a holder, which is made from a stamped and bent sheet metal part. That is, the plate fastened under the flange of the lower part of the spindle has two brackets on one side for mounting the spindle brake so as to be able to pivot, and on the other side of the opposite side Has two legs projecting upward in a fork shape. Both legs extend obliquely toward each other. A position fixing hook is positioned between the legs by a kind of clip coupling. The hook arm of the position fixing hook rushes into the range of the annular collar provided in the drive wheel in the driving state.

  However, in this known locking device, it is inconvenient to install the position fixing hook on the holder by a very simple clip coupling. With such an overall relatively unstable configuration, an orderly operation of the spinning or twisting spindle cannot be guaranteed permanently.

  A locking device for a spinning or twisting spindle is also known from the German utility model No. 29721486. Each of these known locking devices has a vertically arranged holder that can be fixed to the flange of the lower part of the spindle and a locking flap that is pivotally attached to the holder. This lock flap prevents unintentional withdrawal of the upper part of the spindle from the lower part of the spindle when it is pivoted inward.

  In this case, the holder is hardened at least in the area of the abutment surface for its flange and has a sharp ridge angle protrusion in this area. This protrusion bites into the flange at the time of assembly, and in combination with a screw bolt or the like, ensures that the relative fastening between the flange and the holder is fixed, that is, the connection is based on engagement. .

  A lock flap is attached to the holder so as to be turnable by a rivet. That is, a rivet is fixed in a hole provided in the side wall of the holder, and this rivet further passes through a hole provided in the lock flap, which is previously positioned between both side walls of the holder. This known locking device is very stable and reliable in terms of its mechanical structure, but it is expensive to manufacture a locking device constructed in this way.

German Patent Application Publication No. 3934843 German utility model No. 2972486 specification

  Starting from a locking device of the type described above, the problem underlying the present invention is a spinning spindle or a spinning machine that is not only very stable and reliable, but also inexpensive to manufacture. It is to provide a locking device for a twisting spindle.

  In order to solve this problem, in the configuration of the present invention, in the locking device of the type described at the beginning, the holder has a first upper hole or notch for accommodating the lock flap in the area of the rear wall, and A second lower hole or notch for accommodating the securing means, the locking flap being provided with an assembly element by means of which the locking flap is in the assembled state of the holder. It can be attached to the first upper hole or notch so as to be capable of swiveling.

  The configuration of the locking device according to the present invention has the following advantages. That is, a very stable locking device can be easily manufactured and no separate components are required to attach the locking flap.

  Rivets are not required, and as a result, the handling of the components at the time of assembling the components is simplified, making it possible to relatively easily assemble the components. This leads to a significant cost reduction in the production of the locking device according to the invention.

  The lock flap includes a weight stopper portion, an assembly element integrally formed with the weight stopper portion, and a spacing with respect to the assembly element. And the locking flap, with respect to its dimensioning as well as its material, the locking latch can be applied to the end face of the assembly element by deformation without any problems. It is advantageous if it is formed as such. The assembly element in this case, together with the applied locking latch, forms a pivoting element for the locking flap, which is not only easily manufacturable but also functions extremely stably and reliably. That is, when the assembly element is passed through the first upper notch of the holder and the lock latch is crimped to the end face of the assembly element, the lock flap is reliably coupled to the holder.

  In an alternative embodiment as claimed in claim 4, after the locking flap assembly element has been fitted in the first upper notch of the holder, the holder is in the first upper notch area. The locking flap can be deformed so that it can be pivoted, but can no longer be removed, and can be locked in place in the notch. This means that the rear wall of the holder is pushed slightly backwards above the first upper notch and at this time the rear wall forms a receiver for the locking flap assembly element As a result, the locking flap means that the assembly element is securely fixed to the holder without being crimped to the locking latch.

  In a particularly advantageous embodiment, the holder has a plurality of positioning projections in the area of its second lower notch, as defined in claim 5, by which the holder In the assembled state, it is supported by the flange on the lower part of the spindle. Such a configuration has the following advantages. In other words, the holder can be easily fixed to the flange by accurately positioning and preventing rotation without having to harden the holder in the contact range with respect to the flange as in the past and to equip the holder with multiple teeth. can do.

  The elimination of the tooth grinding and the associated holder hardening required at least in certain places also has a favorable effect on the manufacturing costs of the locking device.

  In a further advantageous embodiment as claimed in claims 6 and 7, the mounting position of the locking device, in particular the mounting depth of the holder, is defined and settable, whereby a spinning spindle Alternatively, the diameter of the drive wheel of the twisting spindle can be adjusted without any problem.

  As described in claim 6, this means that the mounting depth of the holder is reduced each time through the depth of the recessed portion provided in the flange where the holder is fixed in operation. The depth of the longitudinal milling part provided on the flange, which can be adapted to the requirements or as described in claim 7 and also serves for the housing of the holder, is optimal for the holder in operating conditions. It means that it can be positioned.

It is a side view of a spinning spindle or a twisting spindle provided with a locking device according to the present invention. It is an enlarged view of the locking device shown in FIG. FIG. 3 is a view of the locking device viewed from behind in the direction of arrow B in FIG. 2. It is the figure which cut | disconnected the locking device along the AA line of FIG. It is the schematic which shows the lock | rock flap of a locking device in the state before the assembly | attachment. FIG. 6 is a schematic view showing another embodiment of the locking device according to the present invention. It is the schematic which shows the locking device shown in FIG. 6 in the state with which the holder was mounted | worn, but was open | released. It is the schematic which shows the locking device shown in FIG. 7 in the closed state. It is a front view of the locking device which has a holder fixed to the position in the recessed part processed and molded by the flange. It is a front view of the locking device which has the holder fixed in the position in the longitudinal direction milling process processed by the flange.

  In the following, embodiments for carrying out the invention will be described in detail with reference to the drawings.

  FIG. 1 shows a spinning or twisting spindle 1 arranged on a ring rail 5 of a textile machine. Each such spinning or twisting spindle 1 has a spindle upper part 2 and a spindle lower part 3, in which case the spindle lower part 3 can rotate the spindle upper part 2. Works to support and damp vibrations.

  The spindle upper portion 2 has a central spindle shaft portion (not shown) as seen in the drawing. The spindle carrier 6 and the drive wheel 4 are fastened to the spindle shaft, preferably by press fitting.

  The drive wheel 4 is in this case loaded by a tangential belt 7. This tangential belt 7 rotates the upper spindle part 2 during operation of the textile machine.

  As shown in FIG. 1, the lower spindle portion 3 passes through a corresponding bearing hole provided in the ring rail 5 and is mounted on the ring rail 5 by a flange 8. In this case, the spindle lower part 3 is fixed to the ring rail 5 by a fixing nut 9. This fixing nut 9 corresponds to a male thread 10 provided on the lower part 3 of the spindle and acts on the washer 11.

  The spinning spindle or twisting spindle 1 further includes a locking device 12. This locking device 12 preferably has a holder 14 fixed to the flange 8 of the lower spindle part 3 by means of screw bolts 13 and a lock flap 15.

  In the following, an advantageous first embodiment of the locking device 12 according to the invention will be described with reference to FIGS.

  As can be seen in particular in FIGS. 3 and 4, in this embodiment, the holder 14 is advantageously formed as a U-shaped sheet metal bending part. On the rear wall 16 of this U-shaped sheet metal bending part, a first upper, preferably rectangular, cutout 17 and a second, preferably circular, cutout 18 are machined. Yes. The range of the side walls 19 and 20 of the holder 14 has positioning protrusions 21 and 22, and the holder 14 is placed on the flange 8 of the spindle lower portion 3 in the assembled state by the positioning protrusions 21 and 22.

  The lock flap 15 formed in an angle shape includes a weight stopper portion 23, an assembly element 24 integrally formed with the weight stopper portion 23, and a closing lock body or lock latch 25.

  As can be seen from FIG. 5, the lock latch 25 is positioned at a distance from the assembly element 24 before the lock flap 15 is secured to the holder 14. In this state, the locking flap 15 can be pushed over the holder 14 from above and positioned so that the assembly element 24 is located in the area of the upper notch 17 of the holder 14. Subsequently, the lock flap 15 is pressed together. That is, the lock latch 25 is abutted against the end face 26 of the assembly element 24. Since the weight stopper portion 23 of the lock flap 15 located on the side opposite to the drive wheel 4 of the holder 14 with respect to the pivot fulcrum of the lock flap 15 has a higher specific weight than the lock latch 25, The weight stopper portion 23 immediately turns downward to position the lock latch 25 in the range of the drive wheel 4, in which case the unintentional withdrawal of the spindle upper portion 2 from the spindle lower portion 3 is reliable. Well blocked. In this case, the holder 14 of the locking device 12 is assembled so that a gap t is secured between the drive wheel 4 and the front edge of the lock latch 25.

  FIGS. 6 to 8 show another embodiment of the locking device 12 according to the invention.

  Also in this embodiment, the holder 14 is preferably formed as a U-shaped sheet metal bending part, with a first upper, preferably rectangular notch 17 in the region of the rear wall 16 and a second And preferably a circular notch 18. The side walls 19, 20 of the holder 14 may also be provided with positioning projections 21, 22 as described for the first embodiment of the locking device 12, but the holder 14 is, for example, as illustrated in FIG. In addition, when positioning is performed in the longitudinal milling portion 29 provided on the flange 8 and the rotation is prevented by the longitudinal milling portion 29, such a positioning projection is not necessarily required.

  As known in principle from the first embodiment, the lock flap 15 includes a weight stopper portion 23, an assembly element 24 integrally formed with the weight stopper portion 23, and the assembly element 24. And latch elements 28 spaced apart. However, the assembly element 24 has a small, slightly raised nose 27 in the area of its free end. Furthermore, the latch element 28 is formed slightly shorter than the lock latch 25 used in the first embodiment.

  As can be seen from FIG. 6 in particular, also in this second embodiment, since a gap is provided between the latch element 28 and the assembly element 24, the lock flap 15 is pressed against the holder 14 from above. And the assembly element 24 is positioned so as to be located in the area of the upper notch 17 of the holder 14. Subsequently, the holder 14 is pushed and clinched. That is, the rear wall 16 of the holder 14 is pushed backward slightly, so that the lock protrusion 30 is formed. As can be seen from FIG. 7, this locking projection 30 then preferably cooperates with the nose 27 of the assembly element 24 to prevent the locking flap 15 from being detached from the holder 14 again.

  9 and 10 show the spinning spindle or the twisting spindle 1 in front views, respectively.

  The locking device 12 of this spinning spindle or twisting spindle 1 is slightly improved in the area of the attachment of the holder 14 in the flange 8 of the lower part 3 of the spindle, respectively. That is, in the embodiment shown in FIG. 9, the holder 14 is fixed in the recessed portion 31 provided in the flange 8 by the screw bolt 13, whereas in the embodiment shown in FIG. 10, the holder 14 is , Positioned in the longitudinal milling section 29 provided on the flange 8.

  Over the depth of the recess 31 or the depth of the longitudinal milling part 29 which can be easily set by a milling tool 29, the built-in depth t of the locking device 12, i.e. the inwardly pivoted lock flap 15, and the drive whirl 4 can be set easily.

DESCRIPTION OF SYMBOLS 1 Spinning spindle or twisting spindle 2 Spindle upper part 3 Spindle lower part 4 Drive wheel 5 Ring rail 6 Winding tube carrier 7 Tangential belt 8 Flange 9 Fixing nut 10 Male thread 11 Washer 12 Locking device 13 Screw bolt 14 Holder 15 Lock flap 16 Rear wall 17, 18 Notch 19, 20 Side wall 21, 22 Positioning protrusion 23 Weight stopper part 24 Assembly element 25 Lock latch 26 End face 27 Nose 28 Latch element 29 Longitudinal milling part 30 Lock protrusion 31 Concave Part

Claims (9)

Locking device for a spinning or twisting spindle (1) of a textile machine, wherein the spinning or twisting spindle (1) has a spindle upper part (2), the spindle upper part (2 ) Has a drive wheel (4) and is rotatably supported in the lower part (3) of the spindle, the lower part (3) of the spindle being attached to the spindle rail (5) of the textile machine A lockable flange (8) is provided, and the locking device (12) is attached to the flange (8) in order to prevent unintentional pulling of the spindle upper part (2). (12) is of a type consisting of a vertically arranged holder (14) and a lock flap (15) pivotably supported on the holder (14) ,
Holder (14), the spindle upper part (2) have a wall (16) after positioned on the opposite side, the rear wall (16), assembled provided on the lock flap (15) The first upper hole (17) for accommodating the element (24) is machined, and the rear wall (16) fixes the locking device (12) to the flange (8). (13) has a lower hole (18) a second for housing,
The lock flap (15) has a first upper hole in the holder (14) in the assembled state in which the lock flap (15) is pivotally supported by the holder (14) by the assembly element (24). (17) A locking device for a spinning spindle or a twisting spindle of a textile machine, characterized in that it can be pivotably mounted within . The holder (14) is formed in a U-shaped cross section and has two side walls (19, 20) and a rear wall (16) joining the side walls (19, 20) together. The locking device according to 1. A lock flap (15) is formed in an angle shape, and includes a weight stopper portion (23), an assembly element (24) integrally formed with the weight stopper portion (23), and the assembly element (24 It has a 28),;) lock latch which is spaced (25 against
The lock flap (15) is pushed and positioned by the holder (14) in order to take the assembled state, and in the assembled state, the weight stopper portion (23) is attached to the holder (14). The locking latch (25; 28) is located on the side of the holder (14) facing the drive whirl (4), and the assembly element ( 24. The locking device according to claim 1, wherein 24) is arranged in the area of the first upper hole (17) . Locking flap (15) with respect to its sizing and material, the locking latch (25) being formed such that it can be applied against the end face (26) of the assembly element (24) by deformation. 3. The locking device according to 3 . After the lock flap (15) is fitted in the rear wall (16) of the holder (14), the holder (14) is above the first upper hole (17) and the lock flap (15) is attached to the assembly element ( 24. The locking device according to claim 1, wherein the locking device is deformable so as to be fixed in position in the first upper hole (17) so as to be pivotable via 24). The locking latch forms a latch element (28), the free end of the assembly element (24) having a nose (27) protruding in the direction of the latch element (28). 5. The locking device according to 5. The holder (14) has positioning protrusions (21, 22) in a range located between the second lower hole (18) and the first upper hole (17). The locking device according to claim 1, wherein the holder (14) is supported by the flange (8) of the lower part (3) of the spindle so that the holder (14) is prevented from rotating in the assembled state by the protrusions (21, 22). The built-in depth (t) of the locking device (12) , corresponding to the distance between the driving wheel (4) and the leading edge of the locking latch (25; 28) towards the driving wheel (4), is , Defined through the depth of the recessed portion (31) for accommodating the section surrounding the second lower hole (18) of the holder (14) provided on the flange (8) The locking device according to claim 3 , which is possible. The built-in depth (t) of the locking device (12) , corresponding to the distance between the driving wheel (4) and the leading edge of the locking latch (25; 28) towards the driving wheel (4), is Defined by the depth of the longitudinal milling part (29) for accommodating the section of the holder (14) surrounding the second lower hole (18) provided in the flange (8). 4. The locking device according to claim 3 , wherein the locking device can be set.

Images