JP5335555B2 - Held shaft drive, set of deflection levers and deflection levers for this device - Google Patents

Abstract

The arrangement has a rod for connecting heald shafts with a drive machine that has a shaft lever (10a-10c) for each heald frame. The rod has switching levers (18a-18c) with arms (25a-25c), which together define angles (alpha, beta). Angle sums of the levers of the different heald shafts differ from each other. An angle of the lever (18a) of one heald shaft lying adjacent to a web bonding point is smaller than an angle of the levers (18b, 18c) of the other heald shafts that are arranged at a distance from the point.

Description

  The present invention relates to a heald shaft drive device for several heald shafts, a set of deflection levers for such a heald shaft drive device, and a deflection lever suitable for the heald shaft drive device. About.

  The loom consists of several heald shafts arranged in series in relation to the warp advance direction, which heald shafts operate alternately up and / or down to form the lacquer with warp yarns. As a result, the weft thread is put into the neck. The travel of the shaft is guided upward (upper lip) or downward (lower lip). In the ideal case, the upward process starting from the zero position and the downward process are the same. The zero position corresponds to the shaft position when the warp yarn guided by the respective shaft is in the warp yarn plane. This higuchi position is also called a higuchi coordination position.

  A rod mechanism consisting of a deflection lever is used to drive the heald shaft. The rod mechanisms normally used to drive individual shafts are constructed in the same manner.

  In order to be able to insert a weft thread, the hiatus needs to be wide enough and open long enough. To meet this requirement, shafts that are remote from the fabric connection point are often forced to reciprocate more than shafts near the connection point. If the reciprocation increases with increasing distance of the heald shaft from the fabric knot in such a way that all warps are moved upwards or downwards at approximately the same angle, this is called a “clean loop”. However, when doing so, the warp is pulled and subjected to different stresses. In contrast, if the yarn stresses are equal, i.e. the individual heald shaft strokes are almost the same, this lip setting is called a "staggered lip". This setting is not optimal from the viewpoint of weft input. Therefore, in actual use, the combination of “clean mouthpiece” and “staggered mouthpiece” is mostly used. This adjustment is called "mixing mouth".

  This means that, considering the actual use, different shaft strokes are used for the operation of the individual heald shafts, ie “staggered lip” is used as well as “mixing louver”. Although some heald shafts employ the ideal one described above, where the upper lip stroke and the lower lip process are the same, the lever deflection of the rod mechanism is the upper lip. There is a considerable difference between the reciprocating motion and the lower lip. These differences are also called “distortion”. This distortion leads to a decrease in the size of the lower mouth. In order to ensure sufficient space for the weft input, the overall process must be increased. This will cause unnecessary stress on the warp and on the opening device as well as on the bearings and deflection points.

  In view of this, it is an object of the present invention to provide an appropriately improved opening device.

This object is achieved by the heald shaft drive of claim 1, for example by utilizing the deflection lever set of claim 8 and / or by using the deflection lever of claim 12.

  The present invention achieves the above objects by means of a heald shaft drive comprising a rod mechanism configured differently for each heald shaft. The rod mechanisms of the individual heald shafts differ in that they consist, for example and preferably, of deflection levers that are configured differently, connected differently or adjusted differently. The deflection lever is in particular characterized by different angles that are defined together by the lever arm of the lever. By using different deflection levers, existing settings across all relevant heald shafts, taking into account a given mouth angle, even if the setting is for a “staggered mouth” or “mixed mouth” It can be achieved that the distortion is reduced and in particular equalized. By doing so, it is also possible to equalize the load on the deflection lever, the support point and the warp.

  Differently configured deflection levers can be combined with connecting rods having different lengths, which connect the deflection lever to the shaft shaft of the dobby. Connecting rods having different lengths allow adjustment of the desired height position of each heald shaft. In addition to connecting rods having a fixed length, connecting rods with adjustable length can also be used.

  Each deflection lever may define a permanently adjusted angle between its two lever arms. In addition, the deflection lever constitutes a deflection lever set including at least two deflection levers having different angles. Preferably, a deflection lever that exhibits a greater angle than the deflection lever of the heald shaft near the connection point is used for the heald shaft that is remote from the connection point.

  Alternatively, it is possible to use the same deflection lever with one angle adjustment option. The angle adjustment option can be by a continuous adjustment device or by an adjustment device that can only make stepwise adjustments of different angles. Preferably, the steps are such that they match the angles that occur at different heald shaft positions. For example, the angle can be adjusted by positive or friction clutches, by adjusting screws or the like, which are provided to adjust one lever arm or part of an angled lever. Similarly, one of the lever arms having various link positions can be used for the connecting rod that defines the path or the lifting rod that defines the path, whereby the link position can be used instead.

  Further details of advantageous embodiments of the invention are found in the drawings, the claims or the description. The description is limited to essential aspects of the invention and various situations. The drawings should be referred to supplementarily. They disclose further details. Hereinafter, it shows in a drawing.

The typical front view of the opening device containing a heddle shaft drive device. The detail of the deflection | deviation lever set of the heald shaft drive device of FIG. FIG. 2 is a kinematic diagram of several deflection levers of the deflection lever set of the heald shaft drive device of FIG. 1. FIG. 2 is a schematic side view of the opening device of FIG. 1. FIG. 6 is a schematic side view of a modified embodiment of an adjustable deflection lever. FIG. 6 is a schematic side view of a modified embodiment of an adjustable deflection lever. FIG. 6 is a schematic side view of a modified embodiment of an adjustable deflection lever. FIG. 6 is a schematic side view of a modified embodiment of an adjustable deflection lever. FIG. 6 is a schematic side view of a modified embodiment of an adjustable deflection lever. FIG. 6 is a schematic side view of a modified embodiment of an adjustable deflection lever. FIG. 6 is a schematic side view of a modified embodiment of an adjustable deflection lever. Explanatory drawing of the difference regarding lip formation of various heald shafts of the device of the present invention compared with the conventional device.

  The following is a description of the figures relating to exemplary embodiments of the invention. Any reference to an element in the figures and claims of the singular or plural or no reference number, regardless of whether they have a reference number, is generic to all elements having the corresponding reference number. It is a serious mention. Citations to individual elements using reference numbers apply specifically to elements thus identified.

  FIG. 1 shows an opening device 1 consisting of a group of heald shafts 2. Each heald shaft 2 is composed of a frame having upper and lower shaft rods and side supports. Each shaft rod carries a plurality of healds 3. These healds are used to guide the warp yarn 4 as shown in FIG. Each individual warp 4 is identified by the same reference number 2a to 2f associated with the heald shaft. As will be apparent and to illustrate the lacing process, the warps 4a, 4b, 4c, 4d and 4f are moved upwards and from the warp plane of the corresponding heald shafts 2a, 2b, 2c, 2d and 2f. Move only the journey. They are located at the top of the mouth. The position of the heald shaft 2e is shifted downward. Therefore, the warp yarn 4e is located at the lower part of the lacquer. The warp yarn 4 advances radially to the fabric connection point where the weft yarn is driven and the fabric 6 extends therefrom. The warp yarn defines a kerf angle of, for example, 32 ° with the warp yarn plane. The shed 7 for inputting the weft is formed between the warp 4e and the other warps 4a to 4d and 4f. The number of heald shafts 2 may be less or greater than that described. Prosthesis can occur in any desired combination of heald shafts 2.

  As is apparent from FIG. 1, the individual heald shafts 2 are moved by a heald shaft drive 8. This includes a dobby 9, whereby a group of rockers or shaft levers 10, ie one shaft lever for each heald shaft 2 (2a to 2f) protrudes from the dobby housing. Each of these shaft levers 10 is individually connected to its respective associated heald shaft 2 (2a to 2f) via a rod mechanism 11. Appropriate connections 12, 13, 14 provided at the lower part of the shaft rod are used to drive the heald shaft 2 via the rod mechanism 11. From this connection, the lifting rods 15, 16, 17 extend downward toward the deflection levers 18, 19, 20. The deflection levers 18, 19, 20 are configured as angled levers. They are supported so as to be rotatable about transverse axes that are parallel to each other. In FIG. 1, the pivoting movement around the axis is indicated by a bent arrow, resulting in a vertical up and down movement of the heald shaft 2 as indicated by the arrow shown to the right of the heald shaft. In order to activate these movements, the lower ends of the angled levers 18, 19, 20 are each hinged by transom rods 21, 22 arranged essentially horizontally. In order to drive this transmission, the deflection lever 18 is hinged to the shaft lever 10 via a connecting rod 23. The connecting rod may be rigid and may have a fixed length. The individual connecting rods 23 associated with the individual heald shafts 2 have individual lengths, whereby each individual rod mechanism leading from the shaft lever 10 to the heald shaft 2 has a different configuration. Also good.

  The deflection levers 19, 20 of all lever drive devices of the heald shaft drive device 8 can show a uniform angle between their lever arms. However, the angled levers 18 (18a, 18b, 18c, 18d) connecting the connecting rod 23 and the transom rod 21 are preferably not configured in the same form. This is apparent from FIG.

  The deflection lever 18 constitutes a deflection lever set 24 in which the lever arms 25, 26 of each deflection lever 18 define different angles α, β, γ, etc. from each other. The lever arm 25 of each deflection lever 18 may have the same length. The lever arm 26 of each deflection lever 18 may also have the same length. The selected lengths of the lever arms 25, 26 may be different.

  At least one of the deflection levers 18 has an angle α that is different from the angle β of at least one other deflection lever 18. This is shown schematically in FIG. The connecting rods 23a, 23b, 23c have different lengths due to the different angular positions of the downwardly directed lever arms 25a, 25b, 25c. In addition, they are preferably fixed at different height positions of the shaft levers 10a, b, c in order to perform different reciprocating movements of the connected heald shafts 2.

  Each deflection lever 18 has a hinge or connection point for the connecting rod 23, transom rod 21 and lift rod 15 at each end of its lever arms 25, 26. The angle defined by the lever arms 25 and 26 is constituted by a line connecting the rotation shaft 27 and the center of these connection points, and the deflection lever 18 is placed so as to be rotatable about the rotation shaft. Preferably, all deflection levers 18 can pivot around a common pivot 27.

  The opening device 1 described so far operates as follows.

  The operation of the heald shafts 2a to 2f is specified in advance by the heald shaft driving device 8. The dobby 9 moves the individual shaft levers 10 accordingly. The rod mechanism 11 is used to transmit this motion to the heald shafts 2a to 2f. When movement is transmitted, the movement changes slightly. In other words, the ascending or descending motion of each heald shaft 2a-2f is not proportional to the movement of the individual shaft lever 10 due to the nonlinear motion transfer law.

  FIG. 4 shows the moment of operation of the opening device 1, where the warp threads 4 are shown only in their path from the respective heald shaft 2 to the fabric connection point 5, however, each heald shaft 2. The route to is not shown. Held shafts 2a, 2b, 2c, 2d and f are located in the upper part of the mouth. The heald shaft 2e is located at the lower part of the mouth. The heald shafts 2a, 2b, 2c and 2d have the same stroke height. They form a so-called “staggered lip”. The heald shafts 2d and 2f are adjusted to different stroke heights. They form so-called “clean tips”. Therefore, a “mixing mouth” is formed as a whole. This is for illustration purposes only. The tail adjustment can be selected basically differently.

  FIG. 3 shows the kinematic features of the heald shaft drive 8. That is, for example, the first three deflection levers 18a, 18b, and 18c having angles α, β, and γ that match a predetermined 32 ° mouth angle are upward (lower bottom mouth) upward ( There is no noticeable difference in the length range of the process to the upper neck. This corresponds to the curve V in FIG. For slightly larger and smaller eyelet angles (these are the angles defined by the warp and the warp plane respectively), a deviation of about +0.5 mm or -0.5 mm is at the top. Occurs between the lip height of the lower lip and lower lip. These are curves IV and VI. It is particularly important that this minimum difference does not increase even if the distance of the heald shaft 2 from the fabric connection point 5 increases.

  In contrast, as shown by curves I-III, the difference between the upper and lower lip of the conventional heald shaft drive corresponding to the lip angle between 30 ° and 34 °. Shows an almost extreme size as the distance from the fabric connection point 5 increases. In FIG. 12a, the shaft near the connection point is on the left and the shaft away from the connection point is on the right. The diagram of FIG. 12 shows a situation with 10 heald shafts.

  The practice of the present invention essentially avoids excessive stresses on the warp, heald and various parts of the lacquer opening device 1 that can cause lacquer differences greater than 9 mm.

  As shown in FIG. 2, the present invention is implemented by a deflection lever set 24 comprising differently configured deflection levers 18a, 18b, 18c and others. However, it is also possible to provide a very diverse design of the adjustable deflection lever 18. FIGS. 5 and 6 show an adjustable deflection lever 18 with lever arms 25, 26 that can be adjusted relative to each other. For this, a meshing clutch 28 is provided between the two. Since the mesh clutch changes the angle between the two lever arms, the lever arms 25 and 26 can be adjusted stepwise.

  It is also possible to provide this type of clutch or a different clutch 29 for only one of the two lever arms 25, 26, as shown in FIG. This adjustment may be continuous or by a predetermined adjustment stage.

  Stepwise adjustment is basically possible with the rigid deflection lever 18 of FIG. Various connecting positions 29a, 29b, 29c for the connecting rods 23a, 23b, 23c are available on one of the lever arms 25, 26, so that the angle between the two lever arms 25, 26 is increased. Is adjustable.

  Other connecting positions of this kind may also be provided on the lever arm 26, but this is not shown in FIG. The connecting positions 29a, 29b, 29c, etc. are preferably provided in such a way that the desired angles α, β, γ are specified in advance.

  FIG. 9 shows another modification. In this case, the two lever arms 25, 26 are provided with an angle adjusting device in the form of an adjusting screw 30 that adjusts the angle set between the lever arms 25, 26 by relative rotation.

  In FIG. 9, pivoting around the axis of the lever arms 25 and 26 occurs in association with each other, whereas one of the lever arms 25 and 26 is divided and provided with a sliding device 31. It is also possible. The linear sliding of a part of the lever arm 25 that supports the connecting position 29 causes an angle adjustment. According to FIG. 11, it can be adapted to support only a part of the lever arm 25 supporting the coupling position 29 in a pivotally adjustable manner, while for example for connecting the transom rod 21 The other portion 25 ′ provided in may be rigid.

  As long as they are provided to adjust the effective angle α, β or γ and are composed of rigid bodies, additional mode changes are possible.

  With respect to the heald shaft drive device 8, the opening device 1 of the present invention uses the deflection levers 18a, 18b, 18c, while the drive motion of the connecting rods 23a, 23b, 23c is moved back and forth. On the other hand, the deflection levers 19 and 20 are further moved via the transom rod 21. The deflection levers 18a, 18b, 18c have different angles α, β, γ between their lever arms 25a, 25b, 25c and 26a, 26b, 26c. Preferably, the connecting rods 23a, 23b, 23c have different lengths employed correspondingly. The length is the dimension when the shaft levers 10a, b, c are in the zero position and all the heald shafts 2a, 2b, 2c are in the coordination position.

  Due to the different angles α, β, γ of the deflection levers 18a, 18b, 18c, the lip difference between the upper lip and the lower lip is minimal and does not depend on the distance from the fabric connection point 5.

DESCRIPTION OF SYMBOLS 1 Opening device 2, 2a-2f Held shaft 3 Held 4, 4a-4f Warp yarn 5 Fabric connection point 6 Fabric 7 Hook 8 Held shaft drive device 9 Dobby 10 Shaft lever 11 Rod mechanism 12, 13, 14 Connection point 15, 16, 17 Lifting rods 18, 19, 20 Deflection levers 21, 22 Transom rod 23 Connecting rod (connecting rod)
24 deflection lever set 25 lever arm 26 lever arm α, β, γ angle between 25a, 26a, 25b, 26b, 25c, 26c 27 pivot shaft 28 meshing clutch 29 clutch 30 adjusting device 31 sliding device

Claims (14)

A rod mechanism (11) for connecting a drive motor (9) to the heald shaft (2), and for each heald shaft (2), an output (10) driven to move back and forth. What you have,
At least one deflection lever (18) having two arms (25, 26) having an angle (α, β) to each other, one of the arms (26) being connected to the heald shaft (2) is the other of the arm (25) consists of those connected to the output (10),
The angles (α, β) of the deflection lever (18) of the two different heald shafts (2) are not equal, and the deflection lever (18a) of the heald shaft (2a) in the vicinity of the mouth (7) The angle (α) is smaller than the angle (β) of the deflection lever (18b, 18c) of the heald shaft (2b, 2c) farther from the mouth (7), for a plurality of heald shafts (2). Held shaft drive (8). The heald shaft driving device according to claim 1, wherein the deflection lever (18) is connected to the output (10) via a connecting rod (23). Each said deflection lever (18) is connected to said output (10) via said connecting rod (23), each said connecting rod (23) having a different length. The described heald shaft drive. The heald shaft driving device according to claim 1, wherein the deflection lever (18) is connected to the output (10) via the connecting rod (23) whose length is adjustable. The heald shaft driving device according to claim 1, wherein the deflection lever (18) is connected to the heald shaft (2) via a lifting rod (18). The heald shaft drive device according to claim 1, wherein the deflection lever (18) is connected to the heald shaft (2) via the elevating rod (15) whose length is adjustable. The heald shaft has at least two deflection levers (18a) such that the arms (25a, 26a, 25b, 26b) define an angle (α, β) with each other and the two angles (α, β) are not equal. 18b). A set of deflection levers for a heald shaft drive according to claim 1, characterized in that The arm (25a, 26a) of one deflection lever (18a) has the same length as the arms (25b, 26b) of the other deflection lever (18b). A set of deflection levers. The set of deflection levers according to claim 7, characterized in that at least the lever arms (25, 26) of the at least one deflection lever (18) are rigidly and non-removably connected to each other. The set of deflection levers according to claim 7, characterized in that the lever arms (25, 26) of several deflection levers (18) are connected to each other in a rigid and non-removable manner. 7. For a heald shaft drive as claimed in claim 1, wherein the lever arms (25, 26) of the deflection lever (18) are adjusted relative to each other. Deflection lever for the deflection lever set (24) according to any one of claims 7 to 10. The deflection lever according to claim 11, wherein the deflection lever (18) is provided with an angle adjusting device (29, 30) for adjusting the angle (α, β). The deflection lever according to claim 12, wherein the angle adjusting device is provided with a positive locking device (29, 30). The deflection lever according to claim 12 , wherein the angle adjusting device has an adjustment stage specified in advance.

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