A spinning nozzle with a make-up air channel for a spinning rotor of a rotor spinning machine

Abstract

The application belongs to the technical field of rotor spinning machines, and particularly relates to a yarn guide tube with a gas supplement channel for a spinning device of a rotor spinning machine, which comprises an integrated mounting part, a yarn guide part and a gas supplement part, wherein the mounting part and the inside of the yarn guide part are smoothly communicated as a yarn guide pipeline; one end of the yarn guide part is provided with a yarn guide port, a gas supplement part is arranged on the side wall of the yarn guide part, the inside of the gas supplement part is provided with a gas supplement channel, and the gas supplement channel is communicated with the yarn guide pipeline; the gas supplement part is additionally arranged on the yarn guide tube, on the basis of providing additional airflow by an external gas source to form additional negative pressure, the part of the gas supplement channel close to the gas supplement outlet is arranged to have a 20-60-degree included angle with the axial direction of the yarn guide part, and the gas supplement outlet is arranged along the circumferential tangent direction of the inner wall of the yarn guide part, so that the flow direction of the additional airflow is considered, the success rate of the yarn guide tube to suck the yarn end is finally improved, the additional airflow can be used to untwist the yarn end and clean the floating fibers, and the success rate of the joint is improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of rotor spinning machine, and particularly relates to a yarn guide tube with air supplement channel for a spinning device of a rotor spinning machine. BACKGROUND

[0002] With the rapid development of the spinning industry and the continuous improvement of the automation level, various new spinning methods are presented. Among them, the rotor spinning machine has become the most mature, the most widely used and the most economical spinning form in the new spinning technology due to its high spinning speed, large package capacity, good spinning adaptability and the ability to spin a variety of quality raw materials.

[0003] The spinning principle of the rotor spinning machine is to open the sliver into a fiber bundle, and the fiber bundle is sent to a high-speed rotating rotor cup by airflow, and is twisted into yarn by contacting with the yarn head in the condensing groove, and is guided out by the yarn guide mechanism, and is directly wound into a yarn tube by the winding device. However, when a broken yarn occurs at a certain spindle position, the yarn head of the broken yarn needs to be sucked into the spinning cup through the yarn guide tube under the negative pressure of the yarn guide tube, so that the yarn head and the fiber bundle are re-lapped in the spinning cup and form a yarn in the condensing groove, so that the rotor spinning machine can continue to operate normally.

[0004] The negative pressure provided by the negative pressure fan at the head and tail of the existing rotor spinning machine is not enough to ensure that the yarn guide tube automatically sucks the yarn head, and the success rate of the yarn guide tube sucking the yarn head is reduced, which affects the working efficiency of the rotor spinning machine. However, if the negative pressure of the whole machine is increased, the overall energy consumption of the user's factory will be increased, and the production cost will be increased, so it is not an economic and effective solution. SUMMARY

[0005] In view of this, the present application provides a yarn guide tube with air supplement channel for a spinning device of a rotor spinning machine, which aims to enhance the negative pressure by adding airflow, and at the same time, to untwist the yarn head introduced into the yarn guide tube, to improve the success rate of the joint, and to consider the removal of the floating fibers in the yarn guide tube.

[0006] In order to achieve the above purpose, the technical scheme adopted by the present application is as follows:

[0007] A yarn guide tube with air supplement channel for a spinning device of a rotor spinning machine is arranged in the spinning device and connected with a twist inhibitor. The yarn guide tube uses negative pressure to suck the yarn head for the spinning device. The yarn guide tube comprises an integrated mounting portion, a yarn guide portion and an air supplement portion. The inside of the mounting portion and the yarn guide portion is a smooth communication yarn guide channel.

[0008] In addition, one end of the mounting part is provided with a mounting ring, the yarn guide pipe is connected with the twist stopper through the mounting ring to be connected into the spinning device;

[0009] One end of the yarn guide part is provided with a yarn guide port, a gas supplement part is arranged on the side wall of the yarn guide part close to the yarn guide port, the gas supplement part is internally provided with a gas supplement channel, and the gas supplement channel is communicated with the yarn guide pipeline.

[0010] Preferably, in the gas supplement part, one end of the gas supplement channel communicated with the outside is provided with a gas supplement inlet, and one end communicated with the yarn guide pipeline is provided with a gas supplement outlet, the additional gas flow will enter the gas supplement channel from the gas supplement inlet and flow out from the gas supplement outlet into the yarn guide pipeline;

[0011] On this basis, the axis of the part of the gas supplement channel close to the gas supplement outlet and the axis direction of the yarn guide part form an angle alpha, and the range of alpha is 20°-60°, that is, the gas supplement channel satisfies that the additional gas flow flows in the direction of the mounting part when entering the yarn guide pipeline from the gas supplement channel.

[0012] Further, in the gas supplement part, the gas supplement outlet is arranged along the circumferential tangent direction of the inner wall of the yarn guide part, that is, the gas supplement channel and the gas supplement outlet satisfy that the additional gas flow spirally flows along the inner wall of the yarn guide pipeline to the position close to the mounting part when entering the yarn guide pipeline from the gas supplement channel.

[0013] Further, a gas supply device is connected to the gas supplement inlet on the gas supplement part, and the gas supply device provides the additional gas flow for the yarn guide pipeline.

[0014] More preferably, on the yarn guide part, the end of the yarn guide port is provided with a yarn guide groove distributed in longitudinal and transverse directions;

[0015] In addition, an exhaust hole is arranged on the side wall of the yarn guide part close to the mounting part, and the exhaust hole is used for exhausting part of the additional gas flow flowing thereto;

[0016] A rubber sheet is further mounted on the outer wall of the yarn guide part through a set of limiting buckles, and the rubber sheet satisfies that when it is attached to the outer wall of the yarn guide part, the rubber sheet completely covers the exhaust hole.

[0017] The beneficial effects of the present application are:

[0018] Overall, the application adds a gas supplement part to the yarn guide tube. On the basis of the external gas source providing additional air flow to the inside of the yarn guide tube to form additional negative pressure, the unique structure angle of the gas supplement channel also takes into account the flow direction of the additional air flow, ultimately improving the success rate of the yarn guide tube sucking the yarn head. The additional air flow can also untwist the yarn head and clean the floating fibers, which also improves the success rate of the joint.

[0019] The yarn guide tube inside the yarn guide tube is smoothly connected, which makes the yarn head move more smoothly inside the yarn guide tube, avoids the blockage of the yarn head caused by large-angle bending, and improves the working efficiency of the joint. In addition, the part of the gas supplement channel near the gas supplement outlet is arranged to have an angle of 20°-60° with the axis direction of the yarn guide part, and the gas supplement outlet is arranged along the tangent direction of the inner wall circumference of the yarn guide part, so that the additional air flow spirally flows along the inner wall of the yarn guide tube to the position near the mounting part, which has the same direction as the original negative pressure of the yarn guide tube, and plays a role in enhancing the original negative pressure. On this basis, the exhaust hole is arranged on the side wall of the yarn guide part near the mounting part, which is used to exhaust part of the additional air flow flowing to this position, prevent the additional air flow from flowing back, and prevent the influence on the subsequent joint action. The rubber sheet is arranged on the outer wall of the yarn guide part. When the additional air flow exists, the high-pressure air flow will flow out from the exhaust hole. When the additional air flow disappears, the original negative pressure of the yarn guide tube will attract the rubber sheet to the outer wall of the yarn guide tube and cover the exhaust hole, preventing the original negative pressure from being lost more, which embodies the practicability of the application. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the yarn guide tube in the present application;

[0022] Figure 2 It is another angle schematic diagram of the three-dimensional structure of the yarn guide tube in the present application;

[0023] Figure 3 It is a schematic diagram of the full section structure of the yarn guide tube in the present application;

[0024] Figure 4 It is Figure 3 G-G cross-sectional view. DETAILED DESCRIPTION

[0025] With reference to the accompanying drawings: the technical solutions in the embodiments of the present application will be apparently and completely described, obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present application.

[0026] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application; in addition, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, and it can be the communication between two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] The spinning principle of the rotor spinning machine is to open the cotton sliver into a fiber bundle, the fiber bundle is sent to the high-speed rotating rotor cup by the airflow, and is twisted into yarn by contacting with the yarn head in the condensing groove, and is drawn out by the yarn drawing device, and is directly formed into a yarn drum by the winding device, wherein the negative pressure always exists in the yarn drawing pipe of the yarn drawing device, when spinning, the drafting force of the winding drafting device overcomes the negative pressure and is drawn out from the yarn drawing pipe; when a broken yarn occurs at a certain spindle position, the yarn head of the broken yarn is sucked into the spinning cup through the yarn drawing pipe under the action of the negative pressure of the yarn drawing pipe, so that the yarn head and the fiber bundle are re-lapped in the spinning cup and form a yarn in the condensing groove, so that the rotor spinning machine continues to operate normally.

[0028] The negative pressure provided by the negative pressure fan at the head and tail of the existing rotor spinning machine is not enough to ensure that the yarn drawing pipe automatically sucks the yarn head, and the success rate of the yarn drawing pipe sucking the yarn head is reduced, which will affect the working efficiency of the rotor spinning machine, but if the negative pressure of the whole machine is increased, the overall energy consumption of the user factory will be increased, the production cost will be increased, and therefore it is not an economic and effective solution.

[0029] In view of this, the inventors of this application provide a yarn guide tube with an air replenishment channel for a rotor spinning machine. Based on the original yarn guide tube, an air replenishment part is added. In addition to providing additional airflow to the inside of the yarn guide tube through an external air source to form additional negative pressure, the unique structural angle of the air replenishment channel also takes into account the flow direction of the additional airflow. Ultimately, this improves the success rate of the yarn guide tube in picking up the yarn end. It can also use the additional airflow to untwist the yarn end and clean up floating fibers, which also improves the success rate of splicing. This can effectively solve the above problems.

[0030] The solution provided by the present invention will now be described in detail with reference to the accompanying drawings.

[0031] In this technical solution, a yarn guide tube with an air replenishment channel is installed inside the spinning unit of a rotor spinning machine and is connected in conjunction with a twist stopper. The yarn guide tube uses negative pressure to attract the yarn head to the spinning unit. Figures 1-3 As shown, the yarn guide tube includes: an integrally formed mounting part 1, a yarn guide part 2, and an air replenishment part 3, wherein the interior of the mounting part 1 and the yarn guide part 2 are smoothly connected yarn guide tubes; in this invention, the smoothly connected yarn guide tubes make the movement of the yarn head inside the yarn guide tube smoother, avoiding large-angle bending that could cause blockage of the yarn head movement.

[0032] In this technical solution, one end of the mounting part 1 is provided with a mounting ring 101, and the yarn guide tube is connected to the twist stopper through the mounting ring 101 to be connected to the spinning machine.

[0033] Based on this, such as Figure 3 As shown, one end of the yarn guiding part 2 is provided with a yarn guiding opening 201, and an air replenishment part 3 is provided on the side wall of the yarn guiding part 2 near the yarn guiding opening 201. An air replenishment channel 301 is provided inside the air replenishment part 3, and the air replenishment channel 301 is connected to the yarn guiding pipe.

[0034] In this application, the end of the air replenishment channel 301 that is connected to the outside is designated as the air replenishment inlet 302, and the end that is connected to the yarn guide tube is designated as the air replenishment outlet 303. The additional airflow will enter the air replenishment channel 301 from the air replenishment inlet 302 and flow out from the air replenishment outlet 303 into the yarn guide tube. An air supply device is connected to the air replenishment inlet 302, and the air supply device provides the additional airflow to the yarn guide tube.

[0035] A key aspect of this technical solution is that the axis of the portion of the air replenishment channel 301 near the air replenishment outlet 303 forms an angle α with the axis of the yarn guide section 2, and the range of α is 20°-60°. Figure 3 As shown, the air replenishment channel 301 satisfies the requirement that the additional airflow flows in the direction toward the mounting part 1 when it enters the yarn feeding pipe from the air replenishment channel 301.

[0036] Also important on this basis is that the air supplement outlet 303 is arranged along the tangential direction of the inner wall of the yarn guide part 2, as shown in the figure, that is, the air supplement channel 301 and the air supplement outlet 303 meet the requirement that the additional air flow spirally flows along the inner wall of the yarn guide pipe to the position close to the mounting part 1 when entering the yarn guide pipe from the air supplement channel 301. Figure 4

[0037] Based on the above embodiment, the structure is arranged in such a way that the additional air flow spirally flows along the inner wall of the yarn guide pipe to the position close to the mounting part 1, which is the same as the original negative pressure direction of the yarn guide pipe, and plays a role in enhancing the original negative pressure, thereby improving the success rate of yarn suction of the yarn guide pipe; in addition, the additional air flow can also be used to untwist the yarn end and clean the floating fibers, so as to improve the success rate of subsequent joint work;

[0038] The air supply device can be an air source machine or the like, when it is necessary to increase the negative pressure of the yarn guide pipe, the air source machine supplies air to the yarn guide pipe, when it is not necessary to supply air, the air source machine is closed and equivalent to closing the air supplement inlet 302, whether the air source machine works or not can be controlled by the staff, or the air source machine can be connected to the control system of the rotor spinning machine, and the control system automatically controls according to the working state of the rotor spinning machine.

[0039] In a more preferred embodiment, as shown in the figure, the side wall of the yarn guide part 2 is provided with an air exhaust hole 202 close to the mounting part 1. Figures 1-3

[0040] In the present application, the air exhaust hole 202 is used to exhaust part of the additional air flow flowing thereto, prevent the additional air flow from flowing back, and also prevent affecting the subsequent joint action.

[0041] At the same time, a rubber sheet 204 is installed on the outer wall of the yarn guide part 2 through a set of limiting buckles 203, and the rubber sheet 204 meets the requirement that when it is attached to the outer wall of the yarn guide part 2, the rubber sheet 204 completely covers the air exhaust hole 202.

[0042] In addition, on the yarn guide part 2, the end of the yarn guide port 201 is provided with longitudinally and transversely distributed yarn guide grooves 205, which are used to receive broken yarns and prevent them from flying away from the yarn guide port under the action of air flow in the external space, thereby improving the success rate of yarn guide.

[0043] Based on the above embodiment, when the additional air flow exists in the yarn guide pipe, the higher pressure air flow will flow out of the air exhaust hole 202; when the additional air flow disappears, the original negative pressure of the yarn guide pipe will attract the rubber sheet 204 to the outer wall of the yarn guide pipe and cover the air exhaust hole 202, preventing the original negative pressure from being lost more, which embodies the practicability of the present application. ​​

[0044] Specifically, when the yarn guide tube with the air supplement channel provided by the spinning device of the rotor spinning machine is used to provide the service of the yarn guide joint for the rotor spinning machine, the whole yarn guide tube body is first installed in the spinning device through the installation ring 101, and then the air supplement inlet 302 of the air supplement part 3 is connected with the external air supply device;

[0045] When the rotor spinning machine is normally spinning, the yarn is drawn out from the inside of the yarn guide tube by the drafting force of the winding and drafting device to overcome the negative pressure drafting; when the yarn breakage occurs at a certain spindle position, the air supply device is controlled to start working to provide additional negative pressure for the yarn guide tube, thereby guiding the yarn located at the yarn guide port 201 into the yarn guide tube, and untwisting the yarn end, cleaning the floating fibers, and sucking into the spinning cup through the yarn guide tube, so that the yarn end is connected with the yarn formed in the condensing groove, and then the winding and drafting device is drafted, so that the rotor spinning machine continues to operate normally.

[0046] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the protection scope of the present application.

Claims

1. A yarn guide with a supplementary air passage for a spinning unit of a rotor spinning machine, which is arranged in the spinning unit and is connected to a twist stopper in cooperation, said yarn guide drawing a yarn end for said spinning unit by means of a negative pressure, characterized in that, The yarn guide tube comprises a mounting part, a yarn guide part and a gas supplement part, wherein the mounting part and the inside of the yarn guide part are smoothly communicated as a yarn guide line; In addition, one end of the mounting part is provided with a mounting ring, and the yarn guide tube is connected with the yarn twist preventer through the mounting ring to be connected into the spinning device; One end of the yarn guide part is provided with a yarn guide port, and a gas supplement part is arranged on the side wall of the yarn guide part close to the yarn guide port, and the inside of the gas supplement part is provided with a gas supplement channel which is communicated with the yarn guide line; In the gas supplement part, one end of the gas supplement channel communicated with the outside is provided with a gas supplement inlet, and the other end communicated with the yarn guide line is provided with a gas supplement outlet, and the additional air flow will enter the gas supplement channel from the gas supplement inlet and flow out from the gas supplement outlet into the yarn guide line; On this basis, the axis of the part of the gas supplement channel close to the gas supplement outlet and the axis direction of the yarn guide part form an angle α, and the range of α is 20°-60°, that is, the gas supplement channel satisfies that the additional air flow flows in the direction of the mounting part when entering the yarn guide line from the gas supplement channel; In the gas supplement part, the gas supplement outlet is arranged along the circumferential tangent direction of the inner wall of the yarn guide part, that is, the gas supplement channel and the gas supplement outlet satisfy that the additional air flow spirally flows along the inner wall of the yarn guide line to the position close to the mounting part when entering the yarn guide line from the gas supplement channel; On the yarn guide part, the end of the yarn guide port is provided with a yarn guide groove which is distributed in longitudinal and transverse directions; In addition, the side wall of the yarn guide part is provided with an exhaust hole close to the mounting part, and the exhaust hole is used to exhaust part of the additional air flow flowing thereto; In addition, the outer wall of the yarn guide part is further provided with a rubber sheet through a set of limiting buckles, and the rubber sheet satisfies that when it is attached to the outer wall of the yarn guide part, the rubber sheet completely covers the exhaust hole.

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