JP2664138B2 - Yarn processing nozzle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to European Patent Application No. 110359 (JP-A-56-7312).
No. 9), a processing nozzle for processing a yarn moving along a predetermined yarn processing path, an inoperative (shrinkage) position away from the yarn path, and the nozzle at that position. Means for moving said nozzle to and from an active (extended) position surrounding the yarn path. Please refer to the disclosure content in the aforementioned application as necessary. As in the case of the aforementioned prior application, the present invention relates to a yarn processing nozzle that can be opened and closed. In the yarn processing nozzle, a plurality of portions forming a yarn processing path therebetween can move with respect to each other, and the yarn processing path can be opened and closed to enable insertion of a yarn. The term "nozzle" described below means a nozzle that can be opened and closed as described above. More preferably, such a nozzle is constituted by only two parts that can move with respect to each other. [Prior Art and Problems to be Solved by the Invention] In the prior application, at least one part of the nozzle is provided with a rotatable free type fitting that allows adjustment of the part, and the one part is a nozzle. A face-to-face sealing contact can be made with the other part or parts. It will be appreciated that it would be advantageous if at least some of the required flexibility could be provided within the component itself. Means for Solving the Problems The yarn processing nozzle of the present invention has a movable nozzle portion for opening and closing in order to perform insertion of a yarn, and between a flat surface formed by each of the nozzle portions. When the flat surfaces come into contact, a yarn processing passage is formed through the nozzle, and at least one of the nozzle portions forms a longitudinally extending groove in the flat surface, and the groove cooperates with an opposed nozzle portion to form the yarn processing passage. A thread processing passage is formed, wherein at least one nozzle portion is positioned opposite the opposing nozzle portion with respect to a flexible plate and a surface forming the yarn processing passage, and is displaceable relative to the opposing nozzle portion. A support member for supporting the flexible plate in a closed state and sealingly contacting the flexible plate with an opposed nozzle portion, and a support member disposed between the support member and the flexible plate; Closing force applying means for applying a closing force toward the opposed nozzle portion to the flexible plate in the closed state, wherein the flexible plate is made of a material selected according to the applied closing force. The flexible plate is resiliently deformed under the applied closing force, and is brought into face-to-face sealing contact with the other nozzle portion under the closing force. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in detail below with reference to the accompanying drawings showing an embodiment of a yarn processing nozzle according to the present invention, wherein the flexible plate is adjusted. The general structure and operation of the textured nozzle shown in each drawing are described in the aforementioned European Patent Application No. 39763 (Japanese Patent Application Laid-Open No. 56-148828) and European Patent Application No. 108205 (Japanese Patent Application Laid-Open No. 59-1984). -71440).
Please refer to these disclosures as needed. To avoid unnecessary description, the overall structure and operation of the yarn texturing nozzle is omitted in this specification. However, each part of the nozzle shown is the same and the reference numbers used for ease of comparison are the same as those used in European Patent Application No. 108205 (JP-A-59-71440). As much as possible. Accordingly, the two nozzle portions of the nozzle are designated by numerals 10 and 12, respectively. Nozzle portion 10 is mounted on a suitable carrier, not shown, using means, one example of which is already disclosed in the aforementioned prior application.
The manner of mounting the nozzle portion 12 will be described in detail later in this specification. Nozzle portion 10 is formed integrally and comprises an elongated block having a flat surface 26 (see FIG. 2). Nozzle part 12
Is a flexible plate 28, and a support member 122 that displaceably supports the flexible plate 28 with respect to the opposed nozzle portion 10.
And a closing force applying means for applying a closing force toward the opposed nozzle portion to the flexible plate 28, which will be described later. The flexible plate 28 is configured as an elongate plate-like member having flexibility selected in relation to the closing force applied. When the nozzle is in the normally closed position, the flexible plate 28 is in surface contact with the opposing flat surface 26 of the nozzle portion 10 to form a sealed thread processing passageway for the texturing fluid. A groove 34 extending from one end (downstream end) is formed on the flat surface 26 of the nozzle portion 10. On the other hand, the flexible plate 28 of the nozzle portion 12 has a flat surface facing the flat surface 26 of the nozzle portion 10.
A groove 36 is formed on the flat surface 29, extending from one end (downstream end) to the other end and slightly widened at the upstream end (see FIG. 1). When the flat surface 26 and the surface 29 are brought into proper engagement, the grooves 24 and 36 are aligned,
A yarn processing passage extending from one end to the other through the nozzle is formed. However, its cross-sectional area varies along the path. This yarn processing path is a yarn path through the nozzle, the details of which can be known from the prior application. Processing fluid meets junction
At 42, it is supplied to the yarn processing passage (FIG. 1) and its junction
At 42, the yarn and fluid are merged. The processing fluid is supplied from the hole 52 upstream of the chamber 54 in the nozzle portion 10 to the junction via the measuring tube 56. The chamber 54 is open at the upstream end of the block and is closed by the closing plate and 63 in use. The closing plate 63 can be moved to gain access to the chamber 54 and the measuring tube 56. The measuring tube 56 is a compression spring that extends between the closing plate 63 and the measuring tube 56.
It is held in the desired position using 60. Closure plate 63
The yarn guide 61 fixed to the shaft serves to guide the yarn accurately to the passage. A textured processing chamber (not shown) is disclosed in the aforementioned European Patent Application No. 108205 (JP-A-59-71440).
The block 10 and the plate 12 are provided near the downstream end of the thread passage by a suitable formation, as shown in FIG. Processing fluid is ejected from the textured chamber across the yarn path and is directed to an outlet hole 72 (in block 10) containing a flow control restrictor 76. The following structure is fundamentally different from that shown in the prior application, and thus the new reference numbers are used. That is,
The support member 122 for supporting the flexible plate 28 so as to be displaceable has a box shape opened to the nozzle portion 10 as shown in FIG. 2, and the flexible plate 28 is arranged so as to cover this opening. You. The flexible plate 28 is held against the support member 122 using four holders 124 (only one is shown in FIG. 1) located at each corner. Each retainer includes a sleeve 126 with internal threads and a pair of screws that enter the sleeve from both ends of the sleeve 126. For reasons that will become apparent, the holding action of the holder (s) 124 allows for some relative movement between the plate member 12 and the support member 122. For this purpose,
A gap is left between the plate member 12 and the sleeve 126 of each retainer 124 and the compression spring 128
22 between the abutment surfaces. Inside the box-shaped support member 122 are two chambers 132 separated by a lateral partition 130 (FIG. 1). In this embodiment, the closing force applying means for applying a closing force toward the opposed nozzle portion 10 to the flexible plate 12 is provided in each chamber 13.
It is composed of lever mechanisms 200A and 200B arranged in the inside 2 and is configured to generate a mechanical closing force. These lever mechanisms 200A and 200B are substantially the same, and the lever mechanism 200A provided in the upper chamber will be described in detail, and the description of the lever mechanism 200B inside the lower chamber 134 will be omitted. The lever mechanism 200A includes a pin 138, levers 140 and 142, pins 144 and 146, and levers 148 and 150. Through hole
136 (FIG. 2) extends across the support member 122 at right angles to the yarn path and substantially parallel to surfaces 26 and 28. The longitudinal axis of the hole 136 is substantially located in the back surface of the chamber 132 (the surface facing the opening surface of the chamber). The pin 138 is cylindrical in cross section and is disposed within the hole 136 by a press fit or the like, and extends over the entire width of the chamber 132. A pair of levers 140 and 142 are mounted on the pin 138, respectively. Figure 2 shows two levers
In FIG. 1, only one of them can be seen. Each of the levers 140, 142 is in the shape of a rectangular bar, and the two levers are located near each side wall of the chamber 132, as best shown in FIG. Each bar has a semi-circular recess corresponding to the pin 138 such that each lever 140, 142 is slightly spaced from the rear surface of the chamber 132 when mounted on the pin. Thus, the two bars are capable of slightly loose rotation about the longitudinal axis of the pin 138. Each of the two bars 140 and 142 has a pin 144 at its upper end and a pin 146 at its lower end. Each of these pins 144 has a longitudinal axis parallel to the longitudinal axis of pin 138. A lever 148 is mounted on the pin 144, and a lever 150 is mounted on the pin 146. Each of the two levers 148, 150 has a semicircular recess corresponding to the respective pin 144, 146, and the levers 148, 150 further have, at their upper and lower ends, bearing portions 152 projecting forward, respectively. As shown in FIGS. 1 and 2, the support portion 152 protrudes beyond the front opening side surface of the box-shaped member 122. Meanwhile, all other parts of the lever structure remain inside the chamber 132. The support portion 152 includes the plate-shaped member 12 and the support member 122.
A gap 154 is left between the front edge of the first member and the second member. Each lever 148, 150 is free to rotate about the axis of each pin 144 or 146 until the bearing portion 152 engages the back of the plate member 12. The outer dimensions of the nozzle portion 12 when the flexible plate 12 is assembled to the support member 122 via the lever mechanisms 200A and 200B almost match the outer dimensions of the nozzle portion 10. As a result, the nozzle portion 12 is mounted on a pair of block-type nozzle housing type mounting devices (not shown) as shown in European Patent Application No. 108205 (see Japanese Patent Application Laid-Open No. 59-71440). It is possible to do. For this purpose, the support member 122 has a holding member (not shown) of a mounting device which is identical to the mounting device shown in the aforementioned European Patent Application No. 108205.
Suitable openings 154 'are provided for cooperating with. Although the interchangeability of parts by this method is not essential, the nozzle portion 12 of the present embodiment has a structure that can be used by replacing an existing nozzle structure. Whatever mounting device is used for the nozzle parts 10, 12, these parts need to be used in combination with a nozzle closing device in use. As the nozzle closing device, a conventional device shown in European Patent Application No. 110359 (see Japanese Patent Application Laid-Open No. 56-73129) and the like can be used. The device shown in EP 108205 has a scissors-type link mechanism, each arm of the scissors-type link mechanism being fitted with a respective nozzle portion 10,12, said arm being described in EP 108205. It can be opened and closed by a suitable drive mechanism, such as a pressurizable piston-cylinder arrangement as shown. As the scissors link mechanism biases the two nozzle sections together, the ramp 156 (see FIG. 2) acts to break the coarse alignment and the locating pins 158 on the flexible plate 28 block. Inserted into the positioning opening 16 in 10, the required alignment of the grooves 34, 36 is obtained and the thread path is formed. FIG.
In, the pin 158 is hidden behind the projecting member 156 of the flexible plate 28 and cannot be seen. The material and dimensions of the flexible plate 28 are such that the flat surface 29 of the flexible plate 28 is
Is selected in relation to the closing force so that it can be elastically deformed by receiving the closing force provided by the closing force applying means when driven. This elastic deformation is hindered by the points of the flexible plate 28 (eight specific contact points (upper chamber 13) that come into contact with the support parts 152 constituting the lever mechanisms 200A and 200B constituting the closing force applying means.
4 at 2 and 4 at the lower chamber 134))
Only in. By appropriately arranging a plurality of levers in each chamber, a predetermined contact area of each bearing 152 with the flexible plate 28 is obtained, and the closing force is evenly distributed at the eight contact points. become. As can be seen from FIG. 2, each contact crosses the thread path in a direction perpendicular to the contact.
Thus, the closing forces are spaced along the length of the yarn handling path at the immediate border region of the grooves 34,36. It is assumed that the initial contact between the flat surface 29 and the flat surface 26 has been made in a local area at any location on these surfaces. Since the closing force is distributed along the length of the nozzle, a moment is generated which causes the plate-like member to pivot about the point of initial contact with the nozzle portion 10 and causes the rest of each flat surface 26 and 29 to To a face-to-face contact state. Flexible plate 28
Is elastically deformable as described above, so that the flexible plate 28 can bend in response to the moment, and the face-to-face contact is made at least at the center of each surface (both sides of the grooves 34 and 36). And along the entire length of the yarn path. In the case of a mismatch between the flat surfaces 26 and the surfaces 29, in the region near the longitudinal edges of these surfaces, no face-to-face sealing contact is achieved. However, this point is, as described above, as long as a sealing contact at the central site is obtained.
Not a big deal. The flexible plate 28 is preferably made of metal and preferably has excellent thermal conductivity for the following reasons. In order to maximize the flexibility that can be imparted to the flexible plate 28, the plate member is made as thin as possible, and has sufficient strength to absorb the closing force even after the formation of the groove 36. Is preferably provided on a plate-like member. Obviously, the thermal conductivity properties of the nozzle portion 12 can be different from the properties of the nozzle portion 12 shown in European Patent Application No. 108205 (see JP-A-59-71440). The provision of the chambers 132, 134 substantially reduces the cross-sectional area available for heat flow at the nozzle portion 12. The invention has been described with reference to a textured nozzle, in particular a particular textured nozzle based on a prior patent application. However, the invention is not limited to such applications. The present invention can be applied to all kinds of yarn processing nozzles such as a nozzle for imparting twist to a yarn, a so-called entanglement imparting nozzle (interlace nozzle), or a nozzle for simply advancing the yarn. However, the most preferred application of the present invention is to textured nozzles where the pressure of the yarn treatment medium (eg, air or steam) is significantly higher.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 shows a second embodiment of a yarn textured nozzle according to the invention.
FIG. 2 is a partial cross-sectional front view of one part, FIG. 2 is a view showing the two parts shown in FIG.
The drawing on the left is a sectional view along the line II-II in FIG. 10, 12… Nozzle part, 26… Flat surface, 28… Flexible plate, 29… Flat surface, 34, 36… Groove, 122… Support member, 132, 134… Chamber, 138, 144, 146… Pin , 140, 142, 148, 150 ... Lever, 152 ... Bearing.

Claims (1)

(57) [Claims] It has nozzle portions (10, 12) movable for opening and closing to allow insertion of the yarn, and between these flat surfaces (26, 29) formed by each of said nozzle portions, A thread processing passage is formed through the nozzle and at least one of the nozzle portions forms a longitudinally extending groove (36) in its flat surface, the groove cooperating with an opposing nozzle portion to allow the yarn processing passage to be formed. The at least one nozzle portion (10,12) formed is a flexible plate (28)
And a flexible plate (28) displaceable with respect to the opposing nozzle portion with respect to the surface forming the yarn processing passage and displaceable with respect to the opposing nozzle portion. A support member (122) for bringing the flexible plate (28) into sealing contact with the portion, and a nozzle portion disposed between the support member (122) and the flexible plate (28) and facing the nozzle portion in the closed state. Closing force applying means for applying a closing force toward the flexible plate (28) to the flexible plate (28). The flexible plate (28) has a material and dimensions selected according to the applied closing force. Having the flexible plate (28) under the applied closing force
Yarn processing nozzle, characterized in that the flexible plate (28) is adjusted so that under the closing force, the other nozzle part is in face-to-face sealing contact with the other nozzle part. 2. The support member (122) is open on a side surface facing the nozzle portion (10), and the flexible plate (28) is positioned so as to cover the open side surface of the support member (122). The yarn processing nozzle according to claim 1, wherein the processing is performed. 3. The flexible plate (28) and the support member (122)
3. The yarn processing nozzle according to claim 2, wherein the overall outer dimensions in the assembled state substantially match the other nozzle portion (10). 4. The closing force applying means includes a plurality of levers (140, 142, 148,
150), and the lever is connected to the other nozzle portion (1).
0) and the flexible plate (2) facing the surface (26)
The yarn processing nozzle according to claim 1, wherein the nozzle is engaged with the surface (29) of (8) to achieve a sealing function. 5. The mounting of the flexible plate (28) on the support member (122) is such that a gap (154) remains between the support member (122) and the flexible plate (28), and the closing force applying means is Through this gap (154), the flexible plate (2
The yarn processing nozzle according to claim 4, wherein the closing force is applied to (8). 6. 6. The device according to claim 1, wherein the support member and the nozzle portion opposed to the support member are attached to an opening / closing device for performing the relative movement for opening and closing the yarn processing passage. The yarn processing nozzle according to any one of the above. 7. The opening and closing device forms a part of a nozzle closing device including a scissors-type link mechanism, and a support member (122) and a nozzle portion (10) opposed thereto are attached to respective arms of the link mechanism. 7. The yarn processing nozzle according to claim 6, further comprising a drive mechanism for opening and closing the link mechanism. 8. The other nozzle part (10) is a flexible plate (2
A patent comprising a block having a groove (34) on its surface (26) facing 8), and having a hole (52) for supplying a processing fluid to said groove (34). A yarn processing nozzle according to any one of claims 1 to 7. 9. The yarn according to claim 8, characterized in that the yarn processing passage (34, 36) leads to a texturing chamber from which the processing fluid flows out across the yarn processing passage. Processing nozzle. 10. Flexible plate (28) under a moment to rotate said flexible plate (28) around a first contact site between said plate and a nozzle portion (10) facing said plate. The amount of elastic deformation of the flexible plate (28) is set so that the bending of the flexible plate (28) is obtained.
10. A yarn processing nozzle according to claim 1, wherein the first contact with said surface is made at a local location at any position on said surfaces. . 11. 11. The method according to claim 10, wherein the bending caused by the moment causes a face-to-face contact at least in a region along the entire length on a side of the yarn processing path. 3. The yarn processing nozzle according to item 1. 12. The yarn processing nozzle according to any one of claims 1 to 11, wherein the flexible plate (28) is made of metal. 13. 13. The yarn processing nozzle according to claim 12, wherein the metal has high heat conduction performance. 14． Rigid support members (12
2. A method according to claim 1, characterized in that the attachment to 2) is performed by means (124) allowing relative movement between the flexible plate (28) and the support member (122). Yarn processing nozzle. 15. The closing force applying means includes at least one lever (140, 142), a pivot fitting (138) for the lever (140, 142), and at least two levers attached to the lever (140, 142) by each pivot fitting (144, 146). Bearing members (148, 150), and the pivot mounting (144, 146) of the bearing members (148, 150) is arranged beside the pivot mounting (138) for the lever (140, 142). The yarn processing nozzle according to claim 1, wherein: 16. The rotation fittings (133, 144, 146) are connected to the yarn processing passage (3).
And extending in a plane substantially perpendicular to and parallel to the yarn path along the line (4, 36).
3. The yarn processing nozzle according to item 1.