JP2010222773A - Fine spinning frame with thread suction device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fine spinning frame with an improved thread suction mechanism set to generate thread suction force on thread suction pipe opening after thread breakage on each fine spinning unit, to reduce energy consumption of the fine spinning frame. <P>SOLUTION: The fine spinning frame includes a blocking mechanism corresponding to each thread suction opening 103 of a thread suction pipe, wherein the blocking mechanism has an blocking device 101, the blocking device is arranged as movable to the thread suction opening 103 and includes guidance means 112, the guidance means is so formed as to generate a pressing force to the fine spinning unit in spinning operation, the blocking mechanism is configured to be maintained on the thread suction opening 103 against the returning force acting on the blocking device 101 to reduce the air passage cross section of the thread suction pipe 102 by the pressing force. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a spinning machine having a plurality of spinning sections, each of which includes a draft device and a twisting device, and further has a yarn suction device, and the yarn suction device includes a plurality of yarn suction devices. Each of the yarn suction pipes is provided with at least one yarn suction opening for sucking the fiber bundle after the yarn breakage, and each of the suction openings is provided in each spinning section. And a type having a predetermined air flow cross section.

  In a spinning machine, for example, a ring spinning machine, yarn breakage repeatedly occurs during spinning operation. In other words, the fiber bundle is cut between the supply roller pair of the draft device and the bobbin or take-up roller, and the spinning process is interrupted. In general, draft devices that are not individually driven continue to operate and supply yarn to the twisting device. The fiber bundle continuously supplied from the draft device must be continuously discharged so as not to cause dirt in the spinning section (spinning site) and yarn breakage in the surrounding or adjacent spinning section.

  For discharging the fiber bundle, the spinning machine is provided with a yarn suction device, the yarn suction device includes a yarn suction tube, and the yarn suction tube is arranged in the vicinity of the fiber bundle flow fed from the draft device. ing. That is, each yarn suction pipe is disposed in the vicinity of the supply roller pair on the outlet side of the supply roller pair of the draft device.

  Such devices are disclosed, for example, in German Offenlegungsschrift 36 42 820 and British Offenlegungsschrift 954127. According to these specifications, the opening of the yarn suction tube is arranged from the twisting device toward the draft device, on the outlet side, below the outlet cylinder of the draft device and on the rear side of the fiber bundle. Yes. In this case, the opening of the yarn suction tube is desired to be arranged as close as possible to the fiber bundle, but the spinning process must not be impaired by the presence of the yarn suction tube.

  EP 1 245 449 discloses a suction tube of a spinning machine equipped with a compression device, which suction tube is arranged on the outlet side in the region of the outlet cylinder, in this case the suction tube When viewed from the twisting device toward the draft device, the opening is disposed in front of the fiber bundle and is directed to the inter-roller nip of the supply roller pair.

  A drawback of the suction systems common today is that during the spinning operation or spinning operation, air is constantly sucked through the whole yarn suction pipe without depending on the occurrence of yarn breakage. Suction is used for the purpose of removing scattered matters and dirt from the spinning section in the region of the supply roller pair, but the suction output set for processing of thread breakage that rarely occurs in one spinning section is Too large for cleaning.

  In a long spinning machine having 1200 to 1600 spinning parts, the energy cost for a high suction power is an important issue. Furthermore, a high total suction output means an increase in the size of a suction device, for example, a drive unit, a blower or a fan, and thus an increase in cost.

German Patent Application Publication No. 3642820 UK Patent Application Publication No. 9512727 European Patent Application No. 1425449

  The object of the present invention is to improve the yarn suction device in order to reduce the energy consumption of the spinning machine without incurring the disadvantages in the operation of the spinning machine, and when yarn breakage occurs in each spinning section. The suction output is generated at the opening of the suction pipe.

  In order to solve the above-described problems, according to the configuration of the present invention, one blocking mechanism is arranged corresponding to the thread suction opening of the suction pipe, that is, each suction pipe is for opening and closing the thread suction opening. The shut-off mechanism includes a shut-off device, the shut-off device is arranged to be movable with respect to the yarn suction opening, and includes guide means. The guide means is formed so as to generate a pressing force on the spinning unit during a spinning operation, and the shut-off device is configured to cause the air flow in the suction opening of the suction pipe by the pressing force. In order to reduce the cross-section, it is maintained on the yarn suction opening against the return force acting on the blocking device.

  In this specification, the “yarn” includes not only a fiber bundle that is not twisted but also a twisted fiber bundle, that is, a spun yarn, a yarn, or a false twisted yarn. The spinning operation includes the production of spun yarn and yarn at the spinning section, and in this case, the fiber bundle is cut instead of the yarn. Thread breakage or fiber breakage occurs regardless of the operating state of another spinning section of the spinning machine. When the yarn breakage occurs, the spinning operation is not continued in the spinning section.

  The guide means is such that the pressing force is generated by Bernoulli's law of the fluid at various positions of the guide means, that is, in particular an aerodynamic drive (differential pressure) based on the air flow flowing along the guide means. It is formed so as to be generated by the pressure of the portion that operates by the above. The shut-off device preferably includes a cover flap, which allows the yarn suction opening to be completely or partially closed, so that the air suction cross section of the yarn suction opening is reduced. It can be changed. The cover flap (flap type cover or lid) is preferably a flat cover member, which is positioned over the yarn suction opening during the spinning operation so that the yarn suction opening is completely or It is at least partially covered or closed. The cover flap or shut-off device reduces the air flow cross section but is designed not to close completely.

  The guide means may have a recessed portion extending to the notch on the guide surface facing the fiber bundle to be sucked, and the recessed portion may be continuously deeper toward the notch. For example, a V-shaped recessed portion that opens toward the notch is provided in the guide surface (see FIGS. 1 and 3). The recess is preferably formed in a funnel shape and narrows towards the notch (see FIG. 11).

  The guide means has a flow guide surface for guiding air sucked by a yarn suction pipe during spinning operation and / or entrained by a rotating lower roller or lower cylinder, and the flow guide surface Is configured to form the aerodynamic drive unit that acts against the return force based on the air flow of the air flowing along the flow guide surface in the shut-off device. According to an embodiment of the invention, the shut-off device is configured such that the return force for the shut-off device is generated by the gravity acting on the shut-off device and / or the return force of the additionally provided return means. And attached to a spinning machine, preferably attached to a suction tube. In the present specification, the description of A and / or B means at least one of A and B. The return means may include a return member, such as a spring member (for example, a helical spring, a coil spring, or a leaf spring), or a rubber elastic member, so that the return member acts against the pressing force. It has become.

  According to an embodiment of the present invention, the guiding means is a flat additional portion (or molded portion) or tongue-like portion (for example, a tongue-shaped additional portion or extension portion integrally formed with the interrupting device) provided in the interrupting device. Is included. The size and orientation of the guiding means (flat addition part or molding part) depend on the geometric shape of the spinning section. The additional portion may be formed as an extension from the upper edge of the cover flap. The flat molding portion as the guide means has first and second surfaces facing each other, that is, both surfaces facing each other, and the first surface (one surface) is in the spinning operation. A flow guide surface is defined in order to flow-guide the air, particularly the air sucked by the yarn suction pipe. A gap-like passage defined between the first surface of the forming section and the lower roller or bottom roller or lower cylinder (lower drum) or bottom cylinder as a component of the spinning section is a thread or Air for sucking the fiber bundle is passed (flowed) toward the yarn suction pipe during the spinning operation. Almost no air flow acts on the second surface, and therefore the flat additional portion or molded portion is exposed to a driving force by the air flow (fluid). Both faces are oriented to have a horizontal component. The guiding means may be formed by the cover flap itself. The cover flap has an outer surface, that is, a first surface opposite to the yarn suction tube and an inner surface facing the suction opening. The outer surface is preferably oriented to have a horizontal component. In this case, additional additional portions or molded portions in the cover flap can be omitted. According to an advantageous embodiment of the invention, the guide means has a fiber bundle guide edge, which is advantageously formed horizontally and is subjected to contact pressure during the spinning operation. The contact pressure acts to hold the cover flap of the shut-off device on the opening of the yarn suction tube. According to another embodiment of the present invention, the guiding means has a laterally inclined edge extending from the fiber bundle guiding edge, the inclined edge being next to the fiber bundle guiding edge. In other words, the fiber bundle is moved along the inclined edge and moved onto the fiber bundle guide edge. The fiber bundle guiding area, in particular the fiber bundle guiding edge, may be made of a material having a high strength against abrasion due to contact with the fiber bundle. This type of material is not the same as the material of the body of the suction tube. According to an embodiment of the invention, the fiber bundle guiding area is formed by a metal part, in particular a metal wire, which is incorporated in a shut-off device made of plastic.

  According to an embodiment of the present invention, further means, for example, a spacer is provided, and the spacer does not completely contact the cover flap over a predetermined region or the entire circumference of the yarn suction opening during the spinning operation. Instead, a gap (air flow excess opening) for a minimum suction action is formed between the cover flap and the yarn suction opening. According to another embodiment, the air flow opening may be provided in the yarn suction tube itself, for example at the edge defining the suction opening.

  According to an advantageous embodiment of the invention, it comprises a sealing means, which seals the area under the suction opening completely or almost airtightly. ing. Thereby, air suction from the lower side of the yarn suction pipe is avoided, and the function of the shut-off device is further improved. The sealing means may be formed on the inner side of the cover flap facing the suction opening by means of an edge adapted to the contour of the suction tube. According to the embodiment of the present invention, the sealing means is formed by a reinforcing raised or flange-like raised portion provided on the inner side (inner surface) of the cover flap. The rim or ridge is adapted to the outer or inner contour of the suction opening, for example in the form of a curve or arc, and in an advantageous embodiment may be provided with a rubber seal or by means of a rubber seal It may be configured. The rim or ridge a surrounds only the area below (below) the suction opening, b) surrounds the area below and to the side of the suction opening, or c) below and to the side of the suction opening. And partially surround the upper (upper) region. In the variation of a), air is sucked only from the side and upper regions, in b) the air is sucked only from the upper region, and in the variation of c), the air is only from the notches. Sucked. The rubber seal may be provided on the yarn suction tube itself, for example on the edge that defines the suction opening.

  According to an embodiment of the present invention, the shut-off device includes a cover flap, a swivel opening / closing cover portion, and the cover flap changes the air flow cross section of the suction opening of the suction pipe (closed or opened, That is, it is reduced or increased). The flat forming portion as the guide means forms a predetermined angle with respect to the cover flap, for example, is arranged on the cover flap at a right angle, and is directed from the yarn suction tube toward the fiber bundle, that is, the yarn. It extends in a direction away from the suction tube, that is, from the cover flap toward the fiber bundle. In another embodiment of the present invention, the shut-off device includes a cover flap for changing the air flow cross section of the suction opening of the suction pipe, and the cover flap itself causes the spinning section during the spinning operation. Guide means for guiding the air flow for forming the pressing force is formed.

  According to an embodiment of the present invention, the shut-off device and / or the yarn suction pipe may be provided between the shut-off device and the yarn suction tube when the shut-off device is located on the yarn suction opening during the spinning operation. Is provided with means for defining an air passage opening, and the air passage section of the air passage opening is smaller than the air passage section of the yarn suction pipe. The air passage cross section of the air passage opening is preferably half the air flow cross section of the yarn suction tube. According to another embodiment, the air passage section of the air passage opening is preferably one third, or one quarter, particularly preferably one eighth, of the air flow section of the yarn suction tube. Correspondingly, the air flow cross section of the yarn suction pipe is correspondingly large and can be reduced. The suction opening is sized to suck the fiber bundle without moving the yarn suction tube or the cover flap when the yarn breaks. The air flow cross-section of the suction opening of the suction tube shows that the fiber bundles are not broken when the yarn breaks, without the movement of the shut-off device (moving or separating swivel movement) or under the slight movement of the shut-off device, i.e. When a thick part is generated in the fiber bundle and is sucked through the air passage opening with movement (moving or separating swirl movement), the thick part (for example, the shrinking thick part) is the air passage opening. The shut-off device is connected to the shut-off mechanism in the following manner, that is, the shut-off device is connected with the shut-off device when the thick portion of the fiber bundle after the yarn breakage occurs. Based on the damming pressure generated before the air passage opening due to the thick part and the return force acting on the shut-off device (both damming pressure and return force act in the opposite direction of the pressing force of the shut-off device), from the yarn suction opening In the direction of separation It is adapted to be allowed to dynamic. The thick part generated at the time of yarn breakage is called a torpedo or sneaker in addition to the shrinking thick part, and is also caused by damming or stagnation in the draft area of the draft device. According to an embodiment of the present invention, it is possible for the shut-off device, preferably on the cover flap or on the flat addition or on the transition area between the molded part and the cover flap, in particular at the upper edge of the cover flap. A notch, preferably a notch or notch, is provided, which forms the smallest air passage opening to the yarn suction tube, ie defines, that is, allows a limited air flow. The notch is formed in, for example, a V shape and forms an opening that expands toward the edge of the end face.

  According to an embodiment of the present invention, the shut-off device is advantageously provided to the spinning machine via a pivoting means, i.e. a pivot joint (hinge joint), in particular a pivot joint joint (swing hinge joint). Is supported (pivotally mounted) on the yarn suction pipe so as to be rotatable or pivotable, and in particular, is rotatably or pivotally supported (pivotally mounted) on an additional part or a molding part provided on the thread suction pipe. According to an advantageous embodiment of the invention, the cover flap of the shut-off device is attached to the thread suction tube via a single support arm with pivot means for pivoting pivoting of the shut-off device Alternatively, it is rotatably or pivotally attached to the molding part or to another part of the spinning machine. The additional part or the forming part is preferably a component incorporated in the yarn suction tube, for example formed by injection molding together with the yarn suction tube. According to another embodiment of the present invention, the pivoting means includes an annular protrusion or journal (pivot or tenon or pin), the protrusion or journal being recessed in the support arm of the yarn suction tube. Is engaged, that is, has entered. On the contrary, it is also possible to provide the recessed portion or the opening in the additional portion of the yarn suction pipe, and in this case, the protrusion of the support arm engages with the recessed portion or the opening of the additional portion. ing. Instead of the journal, a consistent pin (rod), for example a metal pin, can be provided, which connects the ear piece of the support arm and the additional part of the thread suction tube.

  In order to connect the cover flap and the yarn suction pipe, a joint having another structure may be provided instead of the pivoting joint. The shut-off device may be attached to the spinning machine or to an additional part of the yarn suction tube via an elastic member, in particular a spring elastic member. The elastic member has a return force, that is, the blocking device can be moved or turned based on the elastic deformation of the elastic member. The elastic member may be a component incorporated in the yarn suction tube. According to an embodiment of the present invention, the shut-off device may comprise a flexible support arm, the support arm having a spring elastic characteristic and adapted to be attached to a spinning machine or a yarn suction tube. Yes.

  According to an embodiment of the present invention, the shut-off device includes holding means, and the holding means is arranged to achieve the predetermined interval with respect to the suction opening when the shut-off device is turned away from the suction opening. Is held by, i.e., locked, and acts to prevent subsequent separation of the shut-off device. According to another embodiment of the present invention, the holding means may include a stopper provided on the yarn suction pipe so that the stopper prevents a subsequent pivoting of the interrupting device.

  The yarn suction tube or the yarn suction opening is advantageously arranged adjacent to the supply roller pair on the outlet side of the drafting device or, in the case of a compression spinning machine, connected to the compression zone after the nip between rollers. Is arranged. The yarn suction opening is directed to the nip between the rollers according to the yarn guide, or is slightly shifted to the lower roller side. The yarn suction opening may advantageously be formed obliquely, in which case the upper opening edge is shifted in the direction away from the fiber bundle with respect to the lower opening edge, i.e. retracted. Good.

  According to the embodiment of the present invention, the guide means is formed so that the pressing force acting on the guide means is optimally applied to the shut-off device during the spinning operation. The guide means is also referred to as air guide means and forms a flow guide surface, and a pressing force is formed by an aerodynamic drive unit in the guide means, that is, by an air force acting on the guide means. . Such an aerodynamic drive is understood by Bernoulli's law and is operated by different pressure potentials of the fluid acting on each part of the guiding means.

  According to another embodiment of the present invention, the fiber bundle is in contact with the guide means during the spinning operation and generates a pressing force on the guide means. The guide means includes a blocking device and the guide. The fiber bundle guided along the means cooperates in the following manner, that is, the shut-off device reduces the air flow cross section of the yarn suction opening by the pressing force from the fiber bundle, that is, the contact force of the fiber bundle. To be held or maintained on the thread suction opening in order to reduce or at least partially block, and the blocking device is connected or connected to the guiding means as follows: The device is moved or swung away from the yarn suction opening by a return force acting on the shut-off device to increase the air flow cross section of the yarn suction opening upon yarn breakage and disappearance of fiber bundle tension. It is like that. Due to the increase of the air flow cross section and the separation movement of the shut-off device, the air flow flowing along the first surface of the guiding means is reduced, and consequently the aerodynamic driving force is reduced or eliminated. According to another embodiment of the present invention, the shut-off device includes a fiber bundle contact region and a cover flap, and the shut-off device and the fiber bundle contact region are formed as follows: yarn to the shut-off device The contact force is directed to the opening of the yarn suction tube in the direction of movement or swiveling of the cover flap.

  According to an embodiment of the present invention, the shut-off device and the yarn suction pipe are formed so that the fiber bundle can be surely sucked out after the yarn breakage with a reduced air flow cross section compared to the prior art. . The complete opening cross section of the suction opening is required when sucking out so-called shrinkage thick parts. The caterpillar-like shrunken part or torpedo is bulky compared to the fiber bundle, is heavier, and is sucked out from the spinning section through a large opening section with high suction output.

  According to the embodiment of the present invention, the aforementioned pressing force is generated by a negative pressure acting on the guide means. For this purpose, the guide means is formed so that the pressing force of the spinning section is generated by a negative pressure acting on the guide means. The negative pressure is generated by the pressure in the suction pipe (low pressure) and the pressure around the suction pipe. It depends on the pressure difference between the pressure (high pressure). The negative pressure acts to pull and maintain the shut-off device against the return force against the return force when the shut-off device falls below a predetermined interval with respect to the suction opening. The blocking device is adapted to at least partially cover the suction opening. The guiding means may be formed by the cover flap itself. The cover flap or shut-off device may be configured to be guided on the yarn suction opening from above or from the side, in which case a return member is provided, and gravity is used as the return force. Disappear.

  In order to operate the shut-off device when spinning is resumed after yarn breakage or when the spinning machine is started, the shut-off device can be operated manually or by a suction assisting device in the suction opening of the suction tube. Just swivel up. The shut-off device is held in the suction opening by the negative pressure generated in the suction pipe and acting on the shut-off device.

  According to an embodiment of the present invention, the shut-off device or the cover flap provided on the shut-off device is formed movably as follows, i.e. in the fiber bundle, the pneumatic drive and / or the suction tube. Only the negative pressure causes a relatively small pressing force on the shut-off device to hold or guide the shut-off device in front of the yarn suction opening. Furthermore, in the shut-off device, the center of gravity of the shut-off device is arranged as follows with respect to the rotation center point or the turning center point, that is, the shut-off device is as small as possible a thread force, a small driving force by aerodynamic force and / or It is swung toward the opening of the yarn suction tube with a negative pressure so as to be positioned and held.

  In principle, the forces required to hold or maintain the shut-off device in front of the suction pipe against the permanently acting return force are the thread pressure, the driving force based on the fluid and the negative pressure in the suction pipe. Can be produced by using them alone or in combination. The thread suction tube and the shut-off device are preferably made of plastic, in particular thermoplastic plastic. The component parts are manufactured in an integral structure or a plurality of structures by, for example, an injection molding method. The shut-off device may be made from another material, such as metal or aluminum.

  The spinning machine used in the practice of the present invention, such as a ring spinning machine, may be a conventional ring spinning machine equipped with a drafting device followed by a twisting device, or may be arranged between and between the drafting device and the twisting device. It may be a ring spinning machine equipped with a pneumatic compression device. Further, the spinning machine may be an air spinning machine, a funnel spinning machine, a bell spinning machine, or a pot spinning machine, or a fryer. Further, the spinning machine may be a spinning machine for long fibers or a spinning machine for short fibers.

  As an advantage in the present invention, the air flow cross section of the yarn suction opening is reduced or closed during the spinning operation in the spinning section. Only when the yarn breakage or shrinkage thickening occurs, the cover flap is moved away from the yarn suction opening based on the fact that the shrinkage thickening or torpedo produces a kind of wedge action or damming action on the breaking device. And the air flow cross section is enlarged or increased to the target value, so that the suction output is increased. In other words, a complete suction output is generated only in the spinning section that is caused by yarn breakage, whereas the suction output remains reduced in a normal spinning section. Overall, only a small suction output is required during the spinning process, since overall only a small number of spinning sections produce yarn breakage. As a result, the size of the suction device can be reduced accordingly. In other words, the spinning machine can be provided with more spinning sections without designing the suction device with a large output. Furthermore, the size of the suction passage (suction conduit), for example the main suction passage, can be reduced corresponding to the reduction of the suction output. Since the dimensions of the suction device and the suction passage can be reduced, the degree of freedom in the configuration of the spinning machine is increased.

  A further advantage of the present invention is that a suction device can be provided in a narrow area in a spinning machine equipped with a compression device. It is possible to reduce the suction output during the yarn suction process, to reduce the component size, and to enhance the suction action. In the same case of the full output of the suction device, the increased compression output can further reduce the fuzz of the spun yarn.

  The present invention can be implemented by using each of the above-described components alone or in various combinations. Next, the present invention will be described in detail based on the illustrated embodiment.

It is a perspective view of one embodiment of the interruption | blocking mechanism of this invention. FIG. 2 is a side view of the embodiment of FIG. 1 during a spinning operation. It is a side view after the thread breakage of the embodiment of FIG. FIG. 2 is a side view of the embodiment of FIG. 1 after yarn breakage and immediately before the occurrence of shrinkage and thickening. It is a side view after generation | occurrence | production of the thread breakage and shrinkage | contraction thick part of embodiment of FIG. It is a perspective view of another embodiment of the interruption | blocking mechanism of this invention. It is a side view in the spinning operation of embodiment of FIG. It is a side view after the thread breakage of the embodiment of FIG. It is a perspective view of another embodiment of the interruption | blocking mechanism of this invention. It is a perspective view of another embodiment of the interruption | blocking mechanism of this invention provided in the compression apparatus. It is a perspective view of another embodiment of the interruption | blocking mechanism of this invention. It is a perspective view of another embodiment of the interruption | blocking mechanism of this invention. FIG. 9 is a side view of the embodiment of FIG. 8 during spinning operation. It is a figure which shows embodiment of the rotation pivot attachment coupling | bond part between a interruption | blocking apparatus and a thread | yarn suction pipe. It is a figure which shows another embodiment of the interruption | blocking apparatus. It is a figure which shows another embodiment of the interruption | blocking apparatus.

  The thread suction pipes 2, 102, 202 shown in FIGS. 1, 3, and 8 have tongue-like tube addition portions 4, 104, 204, and the tube addition portions (tongue pieces or protrusions, In the illustrated embodiment, the shut-off devices 1, 101, 201 are attached to the integrally formed portion) via the pivoting joints 5, 105, 205. The swivel and pivot joints 5, 105, 205 include two pins attached to the tongue-like tube addition parts 4, 104, 204. The pins are provided on the shut-off devices 1, 101, 201. In addition, it is adapted to enter an opening or a recessed portion formed in two ear pieces 6, 106, 206; 7, 107, 207 surrounding the tongue-like tube addition portions 4, 104, 204 from the side. . Of course, the pins may be provided on the ear pieces 6, 106, 206; 7, 107, 207. In this case, an opening or recess for receiving the pin is provided as a tongue-like tube addition portion 4. , 104, 204. The tongue-like tube addition portions 4, 104, and 204 are components integrated with the yarn suction tubes 2, 102, and 202, or components formed integrally with the yarn suction tubes 2, 102, and 202.

  The shut-off device has cover flaps 16, 116, 216 (see also FIGS. 2, 4 and 9) that can be positioned in front of the yarn suction opening. The shut-off device 1, 101, 201 further includes a guide arm or support arm 8, 108, 208, which connects the cover flaps 16, 116, 216 to the pivoting joints 5, 105, 205. is doing. The support arms 8, 108, 208 are attached with elongated spring-elastic holding members 9, 109, 209, and the holding members (retaining members, detent members, or locking members) are connected to the hook portions 10, 110, 210. I have. The holding members 9, 109, and 209 have their hook portions 10, 110, and 210, and the tube-added portions are flattened through the raised edges 20, 120, and 220 of the tongue-like tube-added portions 4, 104, and 204. It enters into the concave portions 21, 121, and 221 and is hook-engaged, that is, hooked on the raised edge of the tube addition portion. Such a hooking device is such that the shut-off device 1, 101, 201 is movable toward the yarn suction opening 3, 103, 203 with its cover flaps 16, 116, 216, and the yarn suction opening 3, 103, 203 is formed so as to be movable in a direction away from 103, 203, and the blocking devices 1, 101, 201 depend on the positions of the holding members 9, 109, 209 depending on the positions of the yarn suction openings 3, 103, When a predetermined distance to 203 is reached, it is stopped by hooks 10, 110, 210, which are engaged here with raised edges 20, 120, 220, which are formed here as stoppers, and are therefore no longer present. The parts 3, 103, and 203 are not further separated by gravity, that is, are not separated (separated and turned).

  Instead of the holding members 9, 109, 209 and the stoppers 20, 120, 220 that cooperate with the holding members 9, 109, 209 shown in FIGS. 1, 2, 4, 5, 8, and 9, the stoppers and the holding members are different. It may be provided at the site. Although not shown, the stopper is below the turning point (turning point) of the shut-off device held (pivotally attached) to the tube addition part so that it can turn or turn as seen from the thread suction opening side. On the side, it may be formed by an extension or protrusion provided in the tube addition. That is, the tube addition portion extends downward from the turning point (turning point) of the shut-off device, that is, in a direction away from the yarn suction tube, and the extending portion is formed as a stopper, and the shut-off device is provided on the stopper. The lower end portion of the support arm of the shut-off device may be brought into contact with each other at the time of the separate turning so as to prevent the subsequent turn-off of the shut-off device. The shut-off device is formed and attached to the tube add-on so that when the shut-off device reaches the maximum swivel angle, it contacts the stopper of the tube add-on and is no longer pivoted away. The holding member (holding part), in another embodiment, is formed by the guide arm or support arm 8, 108, 208 itself in the region of the ear piece 6, 106, 206; 106, 206; 7, 107, 207 may be formed by additional portions or protrusions provided on the guide arm or support arm 8, 108, 208 below the support arm.

  The cover flap (a flap-like cover or lid) has an air passage opening or notch 15, 115, 215, 315 formed in a V-shaped notch or notch (FIG. 1, FIG. 3, FIG. 8, FIG. 11) is provided. The air passage opening or notch 15, 115, 215, 315 may be formed in a U shape. The air passage opening or notch 15, 115, 215, 315 is located in the center of the cover flap. In another embodiment, the air passage opening or notch may be located off center. The air passage opening or notch ensures a minimum suction action even when the yarn suction openings 3, 103, 203 are covered, that is, closed. However, the air passage opening or notch is not necessarily required to have the configuration shown in the figure. The air passage opening may be formed by, for example, one slit opening between the cover flaps 16, 116, 216 and the yarn suction pipes 2, 102, 202. With such a configuration, air is sucked from the side through the slit opening. The slit opening may be additionally provided for the notches 15, 115, 215, and 315.

  In the first embodiment of the first invention shown in FIGS. 1 and 2, the tongue-like portion 112 is integrally formed at the upper end of the cover flap 116 at a predetermined angle with respect to the cover flap. The tongue portion is directed from the suction tube 102 to the fiber bundle 117a. FIG. 2a shows the position of the shut-off device 101 during the spinning operation. The tongue-shaped portion 112 has an upper surface 113 a and a lower surface 113 b, and together with the outlet lower roller 119, defines a gap-shaped passage 123. The shut-off device 101 or the tongue-like portion 112 is formed so that contact between the shut-off device or the tongue-like portion and the passing fiber bundle 117a does not occur during the spinning operation.

  A V-shaped cut or notch 115 is located in the transition region between the tongue 112 and the cover flap 116. Further, a V-shaped recessed portion 126 is formed on the guide surface of the tongue-like portion 112, and the recessed portion is open toward the notch 115 and continuously deepens.

  When the thread suction opening 103 is closed or covered by the cover flap 116, air is still sucked through the notch 115 (FIG. 2a). A part of the air sucked in this way flows toward the notch 115 through the gap-shaped passage 123 (see arrow 111), and in this case, the upper surface 113a of the tongue-like portion 112 is rubbed. Yes. In this case, a so-called suction balloon 125 is formed on the one hand based on the definition of the side portion (for example, the lower side in FIG. 2a) by the tongue-like portion 112 and on the other hand the side portion (the upper side in FIG. 2a) by the supply roller 119. The suction balloon visually shows the suction action (the area where the suction action occurs). By forming such a suction balloon (region where the suction action occurs), the suction action is concentrated toward the fiber bundle 117a and the roller gap based on additionally defining the suction air flow 111 by the tongue-like portion 112. It is supposed to be born.

  The pressure difference between the upper surface 113a and the lower surface 113b of the tongue-like part generates a driving force, which keeps the shut-off device 101 in a closed position against the yarn suction tube 102 against gravity. It works like that. Furthermore, the pressure difference between the negative pressure inside the yarn suction tube 102 and the ambient pressure also causes the holding force of the yarn suction tube 102 to be generated.

  As shown in FIG. 2 b, when the yarn breakage occurs, the end of the fiber bundle 117 b coming from the draft device is caught by the suction air flow 111 and guided toward the notch (air flow excess opening) 115. Following such a suction process, the fiber bundle 117b is sucked into the suction tube 102 through the notch 115. In this case, the yarn suction opening 103 remains substantially closed by the shut-off device 101 or the cover flap 116.

  As shown in FIGS. 2c and 2d, when the shrinkage thick portion 117C is generated, the thick portion is dammed to the air flow excess opening portion when sucked into the air flow excess opening portion 115, which is the air This is because the flow opening portion 115 is formed smaller in design than the shrinkage thick portion 117C, that is, the shrinkage thick portion 117C is thicker or larger than the size of the air flow opening portion 115. It is. Based on the increase of the damming pressure and the influence of gravity, the shut-off device 101 is swung downward (separated swirl) together with its cover flap 116 in a direction away from the yarn suction opening 103 so as to open the yarn suction opening. It has become. Such a turning motion (separate turning) occurs until the hook portion 110 of the holding member 109 comes into contact with the protruding edge portion 120 of the tongue-like tube addition portion 104. With such a configuration, the contracted and thickened portion 117 </ b> C is now sucked from the yarn suction opening 103 of the yarn suction tube 102 with the maximum suction output (suction action). In FIGS. 2b to 2d, only main components are labeled to avoid the complexity of the drawings, that is, to make the drawings easy to see.

  According to a first variation of the second embodiment of the invention shown in FIG. 3, the V-shaped notch 15 is transitioned between the fiber bundle guiding tongue piece (tongue-like part) 12 and the cover flap 16. Arranged in the area. Further, a V-shaped concave portion 26 is formed on the guide surface of the fiber bundle guide tongue 12, and the concave portion is open toward the notch 15 and continuously deepens. The fiber bundle guide tongue 12 is disposed on the cover flap at a predetermined angle with respect to the cover flap 16, and includes a fiber bundle guide edge 13. One inclined edge 11 is provided on each side of the fiber bundle guide edge 13, and the inclined edge extends obliquely with respect to the fiber bundle guide edge 13, that is, at a predetermined angle. Yes. At the start of spinning after yarn breakage, the fiber bundle 17a is moved from the side by an operator, that is, manually or by a suction auxiliary device to the fiber bundle guide edge 13 via the inclined edge 11, and the spinning is performed. During the process, it travels along the fiber bundle guide edge and, as shown in FIG. 4a, through the fiber bundle guide edge, the shut-off device 1, and thus the cover flap 16, is brought into the yarn suction opening 3. It is pushing toward. When the fiber bundle 17 a is guided through the inclined edge 11, the blocking device 1 is moved toward the yarn suction opening 3.

  FIG. 4a shows the position of the shut-off device 1 during the spinning operation. The fiber bundle 17a that travels through the roller nip (rotational detent gap or working gap) between the supply roller pair (supply cylinder pair) 18 and 19 has a tension generated in the fiber bundle, a spinning shape of the yarn to be manufactured, and a cut-off. Based on the configuration of the device, it is pressed toward the fiber bundle guide edge 13 of the fiber bundle guide tongue 12 of the blocking device 1. As a result, the shut-off device 1 together with its cover flap 16 is swung toward the yarn suction opening 3 around the swivel / pivoting joint 5 to at least partially close the suction opening. Yes. The position of the shut-off device 1 is maintained unchanged during the spinning process. The shut-off device 1 is such that a small reciprocating swivel motion or vibration motion is generated based on the fiber bundle supply with almost no variation performed along with the up and down motion of the ring rail or the ring frame.

  On the one hand, a so-called suction balloon 25 is formed on the basis of the side portion defined by the fiber bundle guide tongue 12 and on the other hand the side portion defined by the supply roller 19, and the suction balloon is a suction action (a region where a suction action occurs). ) Visually. By forming such a suction balloon (region where the suction action occurs), the suction action is based on the fact that the suction air flow is additionally defined by the fiber bundle guide tongue (tongue-like part) 12. Alternatively, it can be concentrated toward the nip between the rollers.

  As shown in FIG. 4b, when the yarn breakage occurs, the yarn tension disappears, and the shut-off device 1 is turned away from the yarn suction opening 3 together with the cover flap 16 due to gravity. The swiveling motion is generated until the hook portion 10 of the holding member 9 comes into contact with the raised edge portion 20 of the tongue-like tube addition portion 4. The yarn suction opening 3 is now open, and the yarn suction tube 2 can suck the end of the fiber bundle 17b with the maximum suction output.

  The embodiment shown in FIGS. 1, 2, 3 and 4 is suitable for a conventional ring spinning machine without a pneumatic compressor, in which the nip between rollers is a guide for the draft device. Defined by roller pairs or supply roller pairs 18, 19; 118; 119.

  5 and 6 show a second variation of the embodiment of the present invention of the blocking mechanism. The shut-off mechanism is formed for use in a ring spinning machine or ring spinning machine having an aerodynamic compression device, and is provided with a single yarn suction pipe 32 shared by one spinning unit adjacent to the compression device. The yarn suction tube is branched into two yarn suction tube portions 51a and 51b in sections directed to the fiber bundles 47a and 47b. The yarn suction pipe portions 51a and 51b are arranged corresponding to the respective spinning units.

  The compression device includes perforated compression drums 54a and 54b guided on one lower roller 55, and guides the fiber bundle to be compressed through the compression drum. Yes. In the compression zone, the fiber bundles 47a and 47b travel through a drum nip between the compression drums 54a and 54b. The drum nip (rotational detent gap) is defined by a fastening line or a nip line between the compression drums 54a and 54b and the outlet upper rollers 53a and 53b that are in contact with the respective compression drums. The drum nip is formed so that drawing of the fiber bundle from the spinning section toward the compression device is stopped at the drum nip.

  Each yarn suction pipe portion 51a, 51b forms a unique yarn suction opening 33a, 33b, and the yarn suction opening is directed to the inter-roller nip of each spinning section. The yarn suction pipe portions 51a and 51b are formed so as to be directed to the fiber bundles 47a and 47b obliquely from below and to engage or contact the fiber bundles from the side, and the yarn suction openings 33a and 33b are formed. When viewed in the direction from the twisting device to the draft device, it is positioned in front of the fiber bundles 47a and 47b, contrary to the embodiment of FIGS. The above-described configuration of the yarn suction pipe 32 provided in the ring spinning machine including the pneumatic compression device and the draft device is of the prior art, and is disclosed in, for example, International Publication No. 03/023100. In this specification, the structure of the drafting device, the subsequent pneumatic compression device, and the yarn suction pipe 32 which is also a component of the present invention is described in detail.

  Based on the arrangement of the yarn suction openings 33a and 33b, it is necessary to change the configuration of the blocking mechanism. The thread suction tube 32 also has a tongue-like tube addition portion 34 here, and the tube addition portion (tube forming portion) is integrally formed at a branching portion of both the yarn suction tube portions 51a and 51b. Yes. The tongue-like tube adding portion 34 may be a component integrated in the yarn suction tube 32, or may be a part of the yarn suction tube 32. That is, in this case, the tongue-like tube adding portion 34 and the yarn suction tube 32 or a part of the yarn suction tube 32 are formed by one member.

  The tongue-like tube addition part 34 has pivoting means 52 for the pivotal pivoting of the blocking device 31 at its free end section. Each of the plurality of pivot means 52 has one side opening, and a pin-shaped molded portion or additional portion 35 provided in the blocking device 31 is engaged in the opening. Therefore, the blocking device 31 is rotatably supported. The pin-shaped molded part or the additional part may be arranged on the side surface of the pipe adding part 34. In this case, the pin-shaped molded part or the additional part arranged in the pipe additional part is used as the blocking device. It is engaged with the provided notch or recess, that is, inserted into the notch or recess. Instead of the pin-shaped molded part or the additional part, it is also possible to provide a pivot pin (pivoting pin), and the pivot pin is also provided in the opening or hole on the side of the tongue-shaped tube additional part 34. It is also inserted into the opening or hole on the side of the free end section of the support arm 38, so that both components, namely the tube addition 34 and the support arm 38, are rotatably connected to each other. In the illustrated embodiment, the shut-off device 31 includes a single support arm 38, and a cover flap 42 is integrally formed at the end section of the support arm that faces the yarn suction opening 33b.

  The cover flap 42 is positioned above the yarn suction opening 33b during the spinning operation, and has a notch 45 formed in the shape of a notch or notch, Even when the yarn suction opening is closed, it forms a minimum amount of air passage or air flow to the yarn suction opening, thereby minimizing suction output for sucking scattered matter and dirt. (Suction action) is guaranteed. However, the notch 45 is not an essential component in the embodiment. As already described, the air passage opening may be formed by a gap opening or a slit opening between the cover flap 42 and the suction pipes 51a and 51b. With such a configuration, air is sucked from the lateral direction (vertical direction) with respect to the longitudinal direction of the suction pipe, that is, from the side through the gap opening. The gap opening may be additionally provided in addition to the notch 45.

  Furthermore, holding means 62, 63 are provided, and the holding means 62, 63 are arranged to achieve a predetermined interval with respect to the suction openings 33a, 33b when the blocking device 31 turns away from the suction openings 33a, 33b. It is held by 63, that is, locked, in other words, it is stopped, and acts to prevent the subsequent separating rotation of the shut-off device. 5 and 6 show two different examples of changes of the holding means 62 and 63. The holding means 62 shown in FIG. 5 has projections 62 provided on the suction pipes 51a and 51b, and the shut-off device 31 that pivots downward from the suction openings 33a and 33b has a predetermined pivot in the separation pivot process. When the angle is achieved, the protrusion 62 is brought into contact with, so that the separation device 31 is prevented from continuing to turn.

  The holding means 63 shown in FIG. 6 is provided on the pivoting joint part itself as shown in the figure, and on the opposite side of the free end sections of the support arm 38 and the tongue-like tube addition part 34. It is formed by the step part provided in each end surface (side surface). The stepped portions 63 on both end faces are engaged with each other, that is, are fitted to each other, and at the time of achieving a predetermined turning angle of the blocking device 31 that turns downward from the suction openings 33a and 33b, It is arranged to come into contact and prevent subsequent turning of the shut-off device 31.

  During the spinning operation, the fiber bundle 47b is in contact with the fiber bundle guide edge 43 of the blocking device 31 with a predetermined tension. In this case, the fiber bundle guide edge 43 is a lower edge defining portion of the cover flap 42. Due to the yarn tension of the yarn made of the fiber bundle (the above-mentioned tension of the fiber bundle), the cover flap 42 of the shut-off device 31 is moved to the yarn suction opening 33b based on the turning motion (rotational motion) around the turning pivot joint 35. As long as the thread tension is generated, it is stopped on the thread suction opening. In this case, the cover flap 42 at least partially covers the yarn suction opening, i.e. is closed (blocked).

  When the yarn breakage occurs, the yarn tension acting on the fiber bundle guide edge 43 disappears, and the shut-off device 31 and thus the cover flap 42 swivel downward about the swivel pivot joint 35 by gravity. It will be.

  In order to start spinning, the cover flap 42 of the shut-off device 31 is swung upward in front of the yarn suction opening 33b manually or by an auxiliary device, that is, swung upward, and the fiber bundle 47b is laterally moved. It is moved on the fiber bundle guide edge 43 along the inclined edge 44 and positioned there. A regular spinning process is then introduced. When guiding the fiber bundle 47a along the inclined edge 44, the shut-off device 31 is moved (turned) toward the yarn suction opening 33b.

  5 and 6 show only one blocking device 31. FIG. As is obvious, for the second yarn suction opening 33a shown in the figure, a second shut-off device (not shown) is provided mirror-symmetrically with respect to the first shut-off device 31, and the second This shut-off device is formed in the same structure as the first shut-off device 31 and is pivotably supported in a plane defined by a hinge joint or pivot means 52.

  FIG. 7 shows a second variation of the first embodiment of the present invention. In this case, the shut-off mechanism is an aerodynamic type having a single suction tube that branches into two adjacent yarn suction tube sections in a section directed to the fiber bundle 147b for two adjacent spinning sections. It is formed so as to be compatible with a ring spinning machine comprising a compression device. One yarn suction pipe portion 151b is arranged corresponding to each spinning section. The configuration of the modified example is substantially equivalent to the configuration of the embodiment shown in FIGS. 5 and 6, and therefore one part of the shut-off mechanism including the cover flap 142 (half or one symmetrical component). Only the other part (opposite other constituent part) is omitted. This also applies to the holding member.

  The shut-off device 131 is located above the suction opening with the cover flap of the shut-off device during the spinning operation, that is, covers the suction opening, and the fiber bundle 147b is the same as the embodiment of FIGS. Are different from each other so that they can travel without contacting the blocking device 131.

  A tongue-shaped portion 160 is formed integrally with the cover flap 142, and the tongue-shaped portion forms a predetermined angle with respect to the cover flap 142. The cover flap 142 has a notch 145 in the form of a V-shaped notch or notch in the transition region to the tongue 160. Furthermore, the air guide surface of the tongue-shaped part 160 has a recess 161 in the form of a funnel-shaped recess, which is narrowed towards the notch or notch 145 and is continuous. It is deeper. The notch 145 forms a minimum amount of air passage or air flow part to the yarn suction opening even when the yarn suction opening is closed, and thereby, scattered matter, dirt, and if necessary This guarantees the minimum suction output (suction action) for sucking the thread.

  The notch 145 is not an essential component here either. As already described, the air passage opening may be formed by a gap opening or a slit opening between the cover flap 142 and the suction pipe 151b. With such a configuration, air is sucked from the lateral direction (vertical direction) with respect to the longitudinal direction of the suction pipe, that is, from the side through the gap opening. The gap opening may be additionally provided in addition to the notch 145.

  As a characteristic configuration in the above-described embodiment, the shut-off device or the cover flap 142 is formed to be movable as follows, that is, an aerodynamic type formed in the tongue-like portion, not by the yarn tension. The drive unit and / or the negative pressure in the suction pipe causes a pressing force to be generated in the shut-off device, and the cover flap 142 is maintained on the yarn suction opening 133b by using the pressing force, that is, covers the yarn suction opening. Or it comes to close. In this case, the shut-off device 131 is also advantageously configured as follows: the center of gravity of the shut-off device 131 is arranged as follows with respect to the turning point of the shut-off device, ie the cover The flap 142 is held on the yarn suction opening 133b with as little pressing force as possible, and the cover flap 142 is opened to the air passage opening when a shrinkage thick portion (thick portion) occurs after the yarn breakage. Based on the damming pressure or pushing pressure by the shrinkage and thickening portion in the portion 145 and gravity, the 145 moves away from the opening of the yarn suction tube 151b or turns away.

  In the modification example shown in FIGS. 8 and 9 of the third embodiment, the tongue-shaped portion or the fiber bundle guide portion is not provided. The upper (upper) free edge of the cover flap 216 is provided with a V-shaped notch or notch-shaped notch 215, which is minimal even when the thread suction opening 203 is closed. The suction output (suction action) is guaranteed, that is, an air passage opening of a predetermined size is formed. With such a configuration, when the suction opening 203 is closed by the cover flap 216, air is continuously sucked through the notch 215 (FIG. 9). In this case, a part of the air 211 sucked in flows along the outer surface of the cover flap 216. In this way, the configuration in which air flows along the outer surface of the cover flap forms an aerodynamic drive unit, and the drive unit resists gravity against the suction pipe 202 against the blocking device 201. It is designed to be held in the closed position where it comes into contact. Further, a differential pressure between the negative pressure inside the suction pipe 202 and the pressure around the suction pipe (ambient pressure) also causes the blocking device 202 to have a holding force. The blocking device 202 or the cover flap 116 is formed so that the blocking device or the cover flap does not come into contact with the fiber bundle 217a passing near the cover flap during the spinning operation.

  The shut-off device shown in FIGS. 8 and 9 operates in the same manner as the shut-off device in FIGS. 1 and 2a to 2d with respect to opening of the suction opening when yarn breakage and shrinkage / weight increase occur. The embodiment shown in FIGS. 8 and 9 is suitable for a conventional ring spinning machine that does not have a pneumatic compression device that defines a nip between rollers by a pair of feed rollers or a pair of feed rollers of a draft device.

  FIG. 10 shows another embodiment of the pivoting joint 305 between the support arm 308 of the shut-off device and the tube addition 304 of the yarn suction tube. The thread suction tube 304 has two ear pieces 306a and 306b spaced apart from each other, and each of the ear pieces has a recessed portion or a hole. The protrusion 305 of the support arm 308 is engaged in the recess or the hole, and the protrusion, together with the recess or hole of the ear piece, is a pivoting joint (a pivoting joint or pivoting hinge). Joint) 305 is formed. Instead of a protrusion, it is also possible to provide a pin that extends substantially transversely to the support arm 308, ie substantially perpendicularly.

  FIG. 11 shows another embodiment of the recessed portion 326, which is formed on the guide surface 313 a on the upper side of the tongue-shaped portion 312 integrally formed with the cover flap 316 of the suction tube 301. Yes. The cover flap 316 has a notch 315 formed in the shape of a V-shaped notch or notch in the transition area to the tongue 312. The recessed portion 326 has a funnel-shaped depression shape that narrows toward the notch 315. The funnel-shaped recessed portion 326 is useful for improving the gripping, guiding and suction of the suction opening 303 or the notch 315 after thread breakage. This is particularly important when the fiber bundle is traversed in the front region. The sucked yarn is pulled toward the center of the funnel opening, and thus toward the notch 315. Furthermore, the funnel shape serves for the collection of sucked air, and hence the acceleration directed to the suction opening 303 or notch 315. A suction balloon 325 is formed on the one hand based on the side portion defined by the tongue-like portion 312 and on the other hand based on the side portion defined by the supply roller (not shown). ) Visually. Due to the formation of such a suction balloon, the suction action is based on the fact that the suction air flow 111 (see FIG. 2a) is additionally defined by a tongue-like part 312 and a funnel-like recess 326. It is designed to be concentrated toward the nip (both not shown). The embodiment shown in FIG. 11 is compatible with the shut-off device of all the embodiments of the present invention.

  FIG. 12 shows another embodiment of a shut-off device 401 with a cover flap 416. The cover flap 416 has an edge 422 adapted to the contour of the suction tube 402 on the inner side facing the suction opening 403. In this example, the edge portion 422 is formed in a curved shape or an arc shape. The edging portion is formed by a ridge or flange-like raised portion provided on the inner side (inner surface) of the cover flap. The edge portion may be provided with a rubber seal or may be constituted by a rubber seal. With such a configuration, at least the region below the suction opening, preferably the lower and side regions, are completely or almost hermetically closed, so that the air is in the vicinity of the notch (not shown). It is designed to be inhaled only in the area above. The illustrated border 422 is compatible with all embodiments of the shut-off device according to the present invention.

  DESCRIPTION OF SYMBOLS 1 Interrupting device, 2 Thread suction pipe, 3 Thread suction opening part, 4 Pipe addition part, 5 Rotating pivot attachment part, 6 Ear piece, 8 Support arm, 9 Holding member, 10 Hook part, 34 Pipe addition part, 38 Support Arm, 42 Cover flap, 43 Fiber bundle guide edge, 62, 63 Holding means, 131 Blocking device, 133b Thread suction opening, 142 Cover flap, 145 Notch, 151b Thread suction pipe, 201 Blocking device, 211 Air, 215 Notch, 216 Cover flap, 301 breaker, 304 Thread suction tube, 305 Rotating pivot joint, 306a, 306b Ear piece, 308 Support arm, 315 Notch, 316 Cover flap, 326 Recessed part, 401 Breaker, 403 suction opening, 416 cover flap, 422 rim Ri part

Claims (18)

  A spinning machine having a plurality of spinning sections, each of which includes a draft device and a twisting device, and further has a yarn suction device, and the yarn suction device includes a plurality of yarn suction tubes. (2,102) each having at least one thread suction opening (3,103) for suction of the fiber bundle (17,117) after thread breakage The suction opening (3, 103) is arranged corresponding to each spinning section and has a predetermined air flow cross section. ) Corresponding to the thread suction opening (3, 103), which is provided with a shut-off device (1, 101). Arranged to be movable and including guiding means (12, 112) The guide means is formed so as to generate a pressing force in the spinning section during the spinning operation, and the shut-off device is configured to cause the suction opening of the suction pipe (2, 102) by the pressing force. In order to reduce the air flow cross section of the part, it is maintained on the yarn suction opening (3, 103) against the return force acting on the shut-off device (1, 101). A spinning machine characterized by that.   Said guiding means (112) depends, in particular, on said guiding means (112), depending on the various pressures determined by Bernoulli's law of the fluid at various positions of said guiding means (112). 2. The spinning machine according to claim 1, wherein the spinning machine is formed so as to be dependent on the pressure of an aerodynamic drive unit (114) based on an air flow (111) flowing along the axis.   The guide means (112) has a flow guide surface (113a) for guiding air sucked by the yarn suction pipe (102) during spinning operation and / or entrained by a rotating lower roller or lower cylinder. The flow guide surface has an aerodynamic drive unit that acts against the return force based on an air flow of the air flowing along the flow guide surface in the blocking device (1). The spinning machine according to claim 1 or 2, wherein the spinning machine (114) is formed.   The shut-off device (1, 101) is configured such that the return force is generated by gravity acting on the shut-off device (1, 101), or is generated by the return force of the return means. The spinning machine according to any one of claims 1 to 3, wherein the spinning machine is attached.   The spinning machine according to any one of claims 1 to 4, wherein the guide means (12, 112) includes a flat additional portion or a tongue-like portion provided in the blocking device (1, 101).   The flat additional portion (112) has first and second surfaces (113a, 113b) facing each other, and the first surface (113a) defines a flow guide surface, 6. A spinning machine according to claim 5, wherein air, in particular, air sucked by the yarn suction pipe (102) flows along the flow guide surface during the spinning operation.   A gap-shaped passage (123) is defined between the first surface (113a) of the additional portion (112) and the lower roller (119) or the lower cylinder of the spinning portion, The spinning machine according to claim 6, wherein the air is guided through the passage toward the yarn suction pipe (102) during the spinning operation.   The shut-off device (1, 101) includes a cover flap (16, 116), and the air flow of the suction opening (3, 103) of the suction pipe (2, 102) is covered by the cover flap. The spinning machine according to any one of claims 1 to 7, wherein the cross section is changed.   The flat additional portion (12, 112) is arranged on the cover flap at a predetermined angle with respect to the cover flap (16, 116), and the direction of the fiber bundle from the yarn suction pipe The spinning machine according to any one of claims 1 to 8, wherein the spinning machine is directed to the machine.   The shut-off device (201) includes a cover flap (216) for changing the air flow cross section of the suction opening (203) of the suction pipe (202), and the guide means includes the cover flap (216) The spinning machine according to any one of claims 1 to 4, wherein the spinning machine is formed by itself.   In the shut-off device (1, 101, 201) and / or the yarn suction pipe, the shut-off device (1, 101, 201) is placed on the yarn suction opening (3, 103, 203) during the spinning operation. Means for defining an air passage opening (15, 115, 215) between the shut-off device (1, 101, 201) and the yarn suction pipe (2, 102, 202) when located The air passage section of the air passage opening is smaller than the air passage section of the yarn suction pipe (2, 102, 202). The spinning machine described.   The air flow cross-section shows that the fiber bundle (117b) does not move when the yarn breakage occurs, or the air passage opening (15, 115, 215) without movement of the blocking device (101). When the thick part is generated in the fiber bundle, the thick part (117C) is formed in a size that can be stopped by the air passage opening (15, 115, 215). The shut-off device (101) is connected to the shut-off mechanism as follows, that is, the shut-off device (101) is used when a thick part (117C) of the fiber bundle after the yarn breakage occurs. Based on the damming pressure generated in the air passage opening (15, 115, 215) by the thick part (117C) and the return force acting on the blocking device (101), the thread suction opening (103) Spinning machine according to claim 11 adapted to be exercised in the direction between.   The blocking device (1, 101, 201), preferably the cover flap (16, 116, 216) or the flat additional part (12, 112) and the cover flap (16, 116, 216). Notches (15, 115, 215), preferably notches or notches, are provided in the transition region between them, in particular on the upper edge of the cover flap (16, 116, 216). A spinning machine as claimed in claim 11 or 12, wherein the is an air passage opening to the yarn suction tube (2, 102, 202).   The shut-off device (1) is rotatably supported by a spinning machine via a pivot joint (5, 105), in particular a pivot pivot joint, and is in particular attached to the yarn suction pipe (2, 102). The spinning machine according to any one of claims 1 to 13, wherein the spinning machine is rotatably supported by an additional portion (4, 104) provided.   The shut-off device (1, 101) includes a cover flap (16, 116), the cover flap (16, 116) being pivoting means for pivoting pivoting of the shut-off device (1). Via a single support arm (8, 108) provided with (5, 105), it is rotatably attached to an additional part (4, 104) provided in the yarn suction pipe (2, 102), or is precisely The spinning machine according to any one of claims 1 to 14, wherein the spinning machine is rotatably attached to another part of the spinning machine.   The fiber bundle (17a) is in contact with the guide means (12, 13) during the spinning operation, and generates a pressing force on the guide means. The guide means (12, 13) The device (1) cooperates with the fiber bundle (17a) guided along the guide means (12, 13) as follows, that is, the blocking device (1) is connected to the fiber bundle ( 17a) is held on the yarn suction opening (3) to reduce the air flow cross section by the pressing force from 17a), and the shut-off device (1) is connected to the guide means (12, 13) in combination as follows: the shut-off device (1) acts on the shut-off device (1) in order to increase the air flow cross section when the yarn breakage and the fiber bundle tension disappear. In a direction away from the yarn suction opening (3) by the return force Spinning machine according to any one of which claims 1 to 15, adapted to Serra.   The guide means (16, 116) is formed such that the pressing force is generated by a negative pressure acting on the guide means (16, 116), and the negative pressure is generated in the suction pipe (2, 102). The spinning machine according to any one of claims 1 to 16, wherein the spinning machine is dependent on a pressure difference between the pressure and the ambient pressure.   The shut-off device (1, 101) includes a cover flap (16, 116) for changing an air flow cross section of the suction opening (13, 113) of the suction pipe (2, 102), and a spinning machine. A support arm (8, 108) for rotationally or pivotably mounting as well as guide means (12, 112), preferably including an additional part for generating a pressing force on the spinning section during the spinning operation. The spinning machine according to any one of claims 1 to 17.

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