KR19990064198A - Carp frame control system of double beam vertical loom - Google Patents

Abstract

The system for controlling the horizontal or nearly horizontal carp frame 4 of the vertical weaving machine, of the type operated by an external weaving former A with a control lever 18 operating in a vertical plane, is provided for the entire width of the loom. And a plurality of overlapping horizontal bars 17 extending over and each connected to one of the control levers 18 to perform alternating linear movement along its longitudinal axis. Each bar 17 is a lever mechanism 21, 22 configured to convert an alternating linear movement of the bar 17 in its longitudinal direction into an alternating linear movement of the heddle frame 4 in a direction perpendicular to the axis. Is connected to the at least one carp frame (4).

Description

Carp frame control system of double beam vertical loom

The general configuration of a vertically arranged double beam weaving machine is disclosed in Italian patent application No. MI91A002079 filed by the present applicant, the content of which is hereby incorporated by reference. Reference to the following is limited to some features of the vertical loom particularly relevant to the present invention, the rest of the loom will be briefly described for ease of understanding.

The present invention relates to a system for controlling an in-frame of a double beam vertical loom, and more particularly to a hinged lever mechanism system configured to transmit control movement of an external weaving machine to two opposing sets of in-frame provided in a double beam vertical loom. will be.

1 is a cross-sectional view of a double beam vertical loom using a control system according to the present invention.

FIG. 2 is a schematic front view of the loom shown in FIG. 1; FIG.

Figure 3 is a schematic perspective view of a control system according to the present invention, showing only a pair of carp frames for the sake of simplicity.

4 is an enlarged schematic front view of a portion of the control system according to the invention (ie stacked longitudinal bars 21 and incorporated eyelets 25);

5 is a schematic side view of a control system according to the present invention;

6 is a schematic plan view, partly in cross section, of a control system according to the present invention;

The overall structure of a new double beam loom using the in-frame control system according to the invention is shown in FIGS. Briefly stated, the loom has a center frame, which is mounted on both sides of its apparatus, forming a device that forms two fully woven lines extending in the vertical direction, arranged opposite each other and preferably symmetrical about the central vertical plane. It has the main body which consists of (1). Starting from the bottom area of the loom, each weaving line consists of a warp beam (2), a drive bar (3) for arranging the warp on a substantially horizontal plane, a warp stop mechanism (12), a yarn pull bar (11), a set of A carp frame (4), a slay with body (5), a winding cylinder (7) for pulling newly formed fabric (6), and a cloth winding beam (8) operated and supported by driving rollers (9, 10). . In addition, the loom is connected to a single control CPU (not shown), a single main motor / clutch unit (M), and a motor / clutch unit, and two isomorphous transmission units (T) configured to transmit their movements to the corresponding sleys. It also includes a drive mechanism made up of. One of the transfer units is configured to transfer the movement of the motor / clutch unit M to a weaving former (A, hereinafter simply referred to as "weaving machine") for operating the system of the invention. The advantages of such a configuration are well described in the patent application and reference is made herein to the above description in order to aid the understanding of the present invention.

In this technique, the configuration has never been used effectively at an industrial level, but single beam vertical looms are known to present problems when moving the frame by an external weaving machine and these problems are not easily solved and double beam It also appears on vertical looms. Indeed, in vertically arranged looms, the carp frame lies substantially horizontal and therefore presents significant problems in transferring control movements of the external weaving machine to these frames, and in this respect all weaving machines on the market are from the weaving machine itself. It is designed to function in the vertical plane in which the emerging control lever mechanism is placed. Thus, without considering cost-related reasons, the possibility of designing a particular use of a weaving machine with horizontally positioned control mechanisms is to control the movement of the weaving machine in a plane inclined at about 90 degrees with respect to the vertical working plane of the weaving machine itself. The only possibility is to control the instrument designed to deliver. These mechanisms proved to be very complex and somewhat infeasible, and could be the reason why this type of loom could not be made suitable for industrial use.

Accordingly, it is an object of the present invention to operate a commercially available weaving machine which does not need to be arbitrarily adjusted, and double beam vertical to enable the same type of fabric to be woven on one side and the other side of the loom by representative operation of the loom. It is to provide a carp frame control system designed to cause symmetrical movement of the corresponding carp frame pair on two opposing weaving lines of the loom.

Another object of the present invention is to provide a system for controlling the in-frame of a vertically arranged weaving machine that can be successfully applied to a single beam loom even though it is designed for a specific shape for a double beam.

It is a further object of the present invention to provide a control system of the above-described type which is particularly compact in order to be stored in a frame of a double beam vertical loom without causing a particular problem while having a simple and robust structure.

The object is according to the invention, ie arranged up and down with each other and lying on a horizontal plane, extending over the entire width of the loom, each connected to the corresponding one of the toggle joint levers to perform alternating linear movement along its longitudinal axis, A vertical arrangement comprising a plurality of bars connected to at least one carp frame by a lever mechanism configured to convert alternating linear movements of the bar in its longitudinal direction into alternating linear movements of the carp frame in a direction perpendicular to the axis In a weaving machine, this is achieved by a system for controlling a horizontal or near horizontal carp frame of the type operated by an external weaving machine with a plurality of toggle joint control levers lying in adjacent vertical planes.

The invention is clearly understood from the detailed description of the preferred embodiment shown in the accompanying drawings.

As briefly mentioned in the introduction, the problem experienced by the inventors of the present invention is an effective method for a dual system carp frame in which the control movement of an external weaving machine placed in a plurality of adjacent vertical planes must alternately move in a horizontal or near horizontal plane. Was to deliver. This problem is complicated because the number of frames that must be operated in each weaving line of the double beam loom is, for example, four as many as shown in the figure, and the control lever emerging from the weaving machine is the carb frame of the horizontal loom. This is because they are located close to each other at the same distance to separate them.

This problem has been solved by the control system according to the invention, which takes a simple, compact and sturdy construction and consists of a system of hinged levers which is particularly suitable for withstanding very fast shifting imposed by the weaving machine. The embodiment shown and described in detail in the accompanying drawings consists only of a double beam loom comprising four carp frames for each weaving line. However, the control system according to the present invention can be favorably used in the case where a large number of in-frame frames and a single beam frame are obtained with the same effect. The system comprises, as its essential components, a number of longitudinal bars 17 which receive movement from each toggle joint 18 of the weaving machine A, and preferably a through transmission lever 19 and a link rod ( 20). The toggle joint bar 18 is equipped with a stroke adjuster as is clearly shown in FIG. 3 as is known. Each longitudinal bar 17 is at least pivotally hinged to the side of the longitudinal bar 17 and the base of the frame 4 by the pair of link rods 22 for each of the carp frame 4. The movement is transmitted to a pair of carp frames 4 arranged on the left and right sides through two right angle levers 21, respectively.

Considering the structural characteristics of the control system according to the invention, it can be seen that the longitudinal bars 17 have a rectangular cross section and extend over the entire width of the loom and correspond to the maximum number of frames provided in each weaving line of the loom. . The bars 17 are arranged stacked on each other at the center of the loom, guiding their movement in the longitudinal axis direction, and at the same time, overlapping frames of the same weaving line according to the inclination angle with respect to the horizontal of the carp frame 4 in the vertical direction. It is located on a corresponding support 23 suitable for keeping at a predetermined distance according to the axial distance between them. The support 23 is preferably made of a block of a wear resistant material having a low coefficient of friction, such as, for example, bakelated fibers and carbon fibers or similar products.

The longitudinal alternating movement is transmitted to the bar 17 by the toggle joint lever 18 of the weaving machine A. For the sake of clarity, the free end of each toggle joint lever 18 shown in FIG. 3 is hinged to the bottom end of the transfer lever 19 and the other end to the fixing structure of the loom. The link rod 20 is hinged at one end in the position between the strut of the lever 19 and the end eyelet. The other end of the link rod 20 is hinged to the eyelet 24 welded to the front end of the bar 17.

In this respect, the distance between the individual toggle joint levers 18 of the weaving machine A is fixed and corresponds to the normal distance existing between the in-frame frames of the horizontal loom. Since the eyelets 24 must follow this distance, space problems arise on their sides with respect to the link rod 20 connected thereto. This problem is solved by placing the eyelets 24 in the staggered arrangement shown in Figure 4, whereby the eyelets 24 are staggered at the same distance as the toggle joint lever 18 with respect to the horizontal plane and with each eyelet with respect to the vertical plane. At least one side of is staggered so as not to overlap adjacent eyelets. For example, in the embodiment shown in the figures and including four longitudinal bars 17, the result is an eyelet of the upper and lower bars in the center position and the eyelets of the center bar in the lateral position. It is obtained by arranging at the front end of the bar. In this way, it is possible to receive the hinge head of the link rod 20 uninterrupted on the right side of the eyelets 24 of the bars I and II 17 and on the left side of the bars III and IV 17. It is not necessary to arbitrarily change the distance between the toggle joint levers 18 of the loom A.

It is possible to transfer the movement from the bar 17 to the carp frame 4 and at the same time change the longitudinal shift of the bar 17 to the transverse shift of the frame 4 to change the direction of the movement itself. In order to achieve this, it is necessary to provide at least two right angle levers 21 for each carp frame as described above. The levers 21 are fixed to the loom and cooperate with a pivot (not shown), each supporting a number of levers 21 corresponding to the number of the in-frame frames 4 of each weaving machine (four in the illustrated embodiment). The central eyelet 21a is hinged to the structure of the loom. The right end of the lever 21 is hinged via a link rod 22 to lugs 25 which respectively protrude from the side of the bar 17 and from the bottom crossing of the carp frame 4.

The lever mechanism actuating the soar frame 4 described so far is preferably provided on both sides of the bar 17 in a symmetrical manner, and therefore two opposing weaving of a double beam loom using the control system according to the invention. In the two sets of the in-frame 4 forming the line part, a certain movement of the same size and speed and symmetrical directions can be obtained. However, it can be seen that the control system can also be used for a single beam vertical loom without causing any problems by simply omitting the lever mechanism for actuating the carousel frame 4 on one of the two sides of the bar 17. .

Although the in-frame control system according to the present invention has been described with reference to specific embodiments, those skilled in the art may change and modify the present invention in various forms within the scope of the appended claims.

Claims (9)

Used for vertically arranged weaving machines to control a horizontal or nearly horizontal carp frame 4 of the type operated by an external weaving machine A with a plurality of toggle joint control levers 18 placed in an adjacent vertical plane. In the system, Arranged up and down with each other and lying on a horizontal plane to extend over the entire width of the loom, each connected to a corresponding one of the toggle joint levers 18 to perform alternating linear movements along its longitudinal axis, in its longitudinal direction Connected to the at least one carp frame 4 by lever mechanisms 21, 22 configured to convert alternating linear movements of the bar 17 into alternating linear movements of the carp frame 4 in a direction perpendicular to the axis. A control system, characterized in that it comprises a plurality of bars (17). 2. Control system according to claim 1, characterized in that each bar (17) is connected to each toggle joint lever (18) by an eyelet (24) fixed in one of its ends and placed in a vertical plane. 3. Control system according to claim 2, characterized in that the eyelets (24) are staggered from each other by the same distance as they exist between the control levers (18) of the weaving machine (A) in the horizontal plane. 4. The control system of claim 3, wherein the eyelets (24) are staggered such that at least one side of the eyelets does not overlap adjacent eyelets in a vertical plane. 5. A method according to claim 3 and 4, comprising at least four bars 17, wherein in the horizontal plane the eyelets I, IV of the upper and lower bars are arranged in a central position and the eyelets II, Control system, characterized in that the eyelet (24) is fixed at the front end of the bar in such a manner that III) is arranged in the lateral position. 6. The bar rod according to claim 2, wherein each bar 17 is connected to the corresponding toggle joint lever 18 by a link rod 20 and a transfer lever 19, and the link rod 20. Is hinged to the eyelet (24) and hinged to an intermediate point on the transfer lever (19), the transfer lever (19) hinged to the toggle joint lever (18) and to a fixed point of the loom. 2. The in-frame according to claim 1, wherein the bar 17 is supported by a block of wear-resistant material having a low coefficient of friction, the block guides the axial stroke movement of the bar and changes the distance between the bars to the horizontal plane. And a predetermined value according to the distance between the superimposed Infant frames (4) according to the inclination angle of (4). 2. The lever mechanism according to claim 1, wherein the lever mechanism comprises at least one pair of right angle levers for each carp frame 4, the lever 21 being hinged to the loom at its central position and the carp frame 4 at two end positions. Control system, which is hinged to the bottom crossover of the side and hinged to the side of the bar (17) via a corresponding link rod (22). 9. A right angle lever (21) is arranged in a group each comprising a lever for each carp frame of the weaving line, wherein the levers of each group are in a single pivot fixed to the loom at their central position (21a). Control system, characterized in that the hinge.