Untwisting pipe

Abstract

An untwisted pipe (100), includes an upper tube body (10) and a lower tube body (20). A first central passage (13) is formed inside the upper tube body (10). A yarn inlet (12) is formed in a side wall of the upper tube body (10). The lower tube body (20) includes a base tube (21) and an extension tube (22), and a second central passage (23) is formed inside both the base tube (21) and the extension tube (22). A plurality of spiral air inlets (211) are formed in a side wall of the base tube (21). An oblique-cut air outlet (221) is formed in an upper end of the extension tube (22), the oblique-cut air outlet (221) of the extension tube (22) is located in the first central passage (13) and located in a profile projection on a side of the yarn inlet (12), and the oblique-cut air outlet (221) has an overlapping region with the yarn inlet (12).

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of textile equipment, in particular to an untwisting pipe.BACKGROUND

[0002] A winding machine is special equipment in the textile industry, playing a "bridge" role and occupying an important position in the textile field. A main working principle of the winding machine includes wire bracing, yarn forming, strand forming, warping and other steps. With the winding machine, fiber can be processed into thin yarn which is further woven into various textiles.

[0003] Untwisting is an important link in operations of the winding machine. Existing technology of untwisting pipes is monopolized by Europe and Japan. A conventional structure of a existing untwisting pipe 40 is shown in FIG. 5 and FIG. 6. A principle is that a high-speed airflow enters into the existing untwisting pipe 40 from the side air inlet 401 of the existing untwisting pipe 40 through an air inlet cavity 411 on a connecting base 41 via a guide passage 412 for changing a flowing direction of the airflow. The high-speed airflow enters into the existing untwisting pipe 40 and then blows out to one end of the existing untwisting pipe 40, and a negative pressure is formed at an opening at the other end of the untwisting pipe to inhale the yarn. After the high-speed airflow enters into the side air inlet 401 of the existing untwisting pipe 40, the high-speed airflow can blow to an inner wall of the existing untwisting pipe 40, and two steams of reverse rotating airflows are formed inside the existing untwisting pipe 40. One of the two steams of reverse rotating airflows is used for untwisting the yarn, which is opposite to a twisting direction of the yarn.

[0004] However, the existing untwisting pipe 40 and the guide passage 412 are usually fixedly arranged at relative positions, and a generated spiral airflow is also relatively fixed. Therefore, it is necessary to realize how to generate different airflow cyclones in the untwisting pipe quickly and effectively to adapt to the untwisting of different yarn and ensure the untwisting and shaping effect of different yarn.SUMMARY

[0005] An objective of the present disclosure is to provide an untwisting pipe so as to solve above problems in the prior art. The untwisting pipe can be adjusted quickly and effectively according to different needs, so that adjustability and applicability are improved.

[0006] In order to achieve the above objective, the present disclosure provides the following solution.

[0007] The present disclosure provides an untwisting pipe. The untwisting pipe includes an upper tube body and a lower tube body, where a first central passage is formed inside the upper tube body, a yarn outlet and a lower opening communicating with the first central passage are formed in both ends of the upper tube body, respectively, and an inner diameter of the lower opening is smaller than an inner diameter of the first central passage; a yarn inlet communicating with the first central passage is formed in a side wall of the upper tube body; the lower tube body includes a base tube and an extension tube, an upper end of the base tube is fixedly connected and communicates with a lower end of the extension tube, and a second central passage is formed inside both the base body and the extension tube; several spiral air inlets communicating with the second central passage are formed in a side wall of the base tube, a lower end of the base tube is fixedly inserted into a mounting hole of a base, and a part, provided with the spiral air inlets, of the base tube can be located in an air inlet chamber of the base; an oblique-cut air outlet communicating with the second central passage is formed in an upper end of the extension tube, the extension tube is fixedly inserted into the lower opening, the oblique-cut air outlet of the extension tube is located in the first central passage and located in a profile projection on a side of the yarn inlet, and the oblique-cut air outlet has an overlapping region with the yarn inlet; when an axis of the upper tube body is in a vertical direction, a lowest end of the oblique-cut air outlet is not higher than a middle part of the yarn inlet, and an uppermost end of the oblique-cut air outlet is not higher than an uppermost end of the yarn inlet; under an action of external force, the upper tube body can rotate circumferentially about a first axis relative to the lower tube body; the inner diameter of the first central passage is larger than an inner diameter of the second central passage, and the inner diameter of the second central passage is smaller than an inner diameter of a gas inlet of the air inlet chamber of the base; each spiral air inlet can guide an airflow to enter the second central passage spirally and flow to the first central passage; and a high-speed airflow flowing through the first central passage can form a negative pressure at the yarn inlet and inhale yarn.

[0008] Preferably, a plurality of first scale lines are arranged on a lower end face of the upper tube body around a circumferential direction of the upper tube body, and a second scale line is arranged at a position, corresponding to the oblique-cut air outlet, of the base tube.

[0009] Preferably, the first central passage and the second central passage are coaxially arranged.

[0010] Preferably, the yarn inlet is an oblique port with an inner side facing the yarn outlet.

[0011] Preferably, a lower air inlet communicating with the second central passage is further formed in the lower end of the base tube.

[0012] Preferably, an included angle between an oblique surface of the oblique-cut air outlet and an axis of the extension tube is 30° to 45°.

[0013] Compared with the prior art, the present disclosure has the following technical effects.

[0014] According to the untwisting pipe provided by the present disclosure, the spiral air inlets which can be directly placed inside the air inlet chamber of the base are used for enabling the airflow to enter into the first central passage from the oblique-cut air outlet through the second central passage in a spiral airflow manner. In a process that the airflow passes through the oblique-cut air outlet and the yarn, two steams of mainstream spiral airflows can be formed. One of the two steams of mainstream spiral airflows is a spiral airflow formed by collision of a middle part of gas from the oblique-cut air outlet and an inner wall of the first central passage. The other of the two steams of mainstream spiral airflows is another spiral airflow formed by combined action of a part of gas from the oblique-cut air outlet and gas inhaled from the yarn inlet. The two steams of mainstream spiral airflows are two steams of stable spiral airflows with opposite spiral directions finally formed inside the first central passage located above the oblique-cut air outlet and the yarn inlet, where the spiral airflow with opposite yarn twist is used for untwisting yarn. A relative position between an incision direction of the oblique-cut air outlet and the yarn inlet can be changed through rotation therebetween. Therefore, firstly, when yarn with different untwisted directions is untwisted, different untwisted positions can be switched through symmetrical rotation between the incision direction of the oblique-cut air outlet and the yarn inlet. Secondly, airflow cyclone inside the first central passage can be adjusted and changed through rotation between the incision direction of the oblique-cut air outlet and the yarn inlet, so that the untwisting pipe can be applicable to untwisting different yarn. The untwisting pipe can be quickly and effectively adjusted according to different needs, so that the adjustability and applicability of the untwisting pipe are improved.

[0015] Further, the second scale line is used for indicating an orientation of the oblique-cut air outlet, position adjustment indications of relative positions between the oblique-cut air outlet and the yarn inlet are realized through different alignment and cooperation of different first scale lines and second scale lines, so that the adjustments for the positions are realized conveniently and more accurately.

[0016] Further, the first central passage and the second central passage are coaxially arranged, so that a high-speed airflow inside the second central passage can enter into the first central passage more stably.

[0017] Further, the yarn inlet is an oblique port with an inner side facing the yarn outlet, and the yarn moves towards the yarn outlet more smoothly after the yarn enters into the first central passage.

[0018] Further, the lower air inlet can be matched with each spiral air inlet for combined action, and a stable spiral airflow is formed inside the second central passage to ensure sufficient air intake.

[0019] Further, an inclined angle of the oblique-cut air outlet can ensure combined action of the oblique-cut air outlet and the gas entering at the yarn inlet to generate a spiral airflow with better effect.BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the present embodiment of the present disclosure or the technical solutions in the prior art, the following briefly introduces accompanying drawings to be used in the present embodiment. Apparently, the accompanying drawings in the following description show merely some embodiments of the present disclosure, and those skilled in the art may still derive other drawings from these accompanying drawings without creative efforts. FIG. 1 is an integral structural schematic diagram of an untwisting pipe according to the present disclosure. FIG. 2 is a structural explosive view of an untwisting pipe according to the present disclosure. FIG. 3 is a schematic diagram of an untwisting pipe, mounted on a base, according to the present disclosure. FIG. 4 is a structural schematic diagram of FIG. 3 in another view. FIG. 5 is a structural schematic diagram of an existing untwisting pipe. FIG. 6 is a schematic diagram of an airflow flowing in a cross section of an existing untwisting pipe. FIG. 7 is a schematic diagram of an airflow flowing on a longitudinal section after an untwisting pipe according to the present disclosure is mounted on a base. FIG. 8 is an airflow flowing schematic diagram of an airflow in a second central passage in an untwisting pipe according to the present disclosure. FIG. 9 is an airflow flowing schematic diagram of an airflow reaching a position of an oblique-cut air outlet in an untwisting pipe according to the present disclosure. FIG. 10 is an airflow flowing schematic diagram of an airflow reaching a position of a middle position of an oblique-cut air outlet in an untwisting pipe according to the present disclosure. FIG. 11 is an airflow flowing schematic diagram of an airflow which reaches a top of an oblique-cut air outlet and is still in a range of a yarn inlet in an untwisting pipe according to the present disclosure. FIG. 12 is an airflow flowing schematic diagram of an airflow which is about to flow through a highest end of a yarn inlet in an untwisting pipe according to the present disclosure. FIG. 13 is an airflow flowing schematic diagram of an airflow flowing through a rear section of a yarn inlet in an untwisting pipe according to the present disclosure. FIG. 14 is an airflow flowing schematic diagram of an airflow of an oblique-cut air outlet at a first position relative to a yarn inlet after just passing through the yarn inlet in an untwisting pipe according to the present disclosure. FIG. 15 is an airflow flowing schematic diagram of an airflow of an oblique-cut air outlet at a second position relative to a yarn inlet after just passing through the yarn inlet in an untwisting pipe according to the present disclosure. Reference signs:

[0021] 100, untwisting pipe; 10, upper tube body; 11, yarn outlet; 12, yarn inlet; 13, first central passage; 14, first scale line; 20, lower tube body; 21, base tube; 211, spiral air inlet; 212, lower air inlet; 22, extension tube; 221, oblique-cut air outlet; 23, second central passage; 24, second scale line; 30, base; 31, gas inlet; 32, air inlet chamber; 33, mounting hole 34, guide slot; 40, existing untwisting pipe; 401, side air inlet; 41, connecting base; 411, air inlet cavity; and 412, guide passage. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The following clearly and completely describes the technical solutions in the embodiments of the present disclosure with reference to the accompanying drawings in the embodiments of the present disclosure. Apparently, the described embodiments are merely a part rather than all of the embodiments of the present disclosure. All other embodiments acquired by a person of ordinary skill in the art Based on the embodiment in the present disclosure without creative efforts shall fall within the protection scope of the present disclosure.

[0023] An objective of the present disclosure aims is to provide an untwisting pipe so as to solve problems in the prior art. The untwisting pipe can be adjusted quickly and effectively according to different needs, so that the adjustability and applicability are improved.

[0024] To make the foregoing objective, features and advantages of the present disclosure clearer and more comprehensible, the present disclosure is further described in detail below with reference to the accompanying drawings and specific embodiments.Embodiment I

[0025] The embodiment disclosures an untwisting pipe 100. As shown in FIG. 1 to FIG. 4 and FIG. 7 to FIG. 15, the untwisting pipe 100 includes an upper tube body 10 and a lower tube body 20. A first central passage 13is formed inside the upper tube body 10. A yarn outlet 11 and a lower opening communicating with the first central passage 13 are respectively formed in both ends of the upper tube body 10. An inner diameter of the lower opening is smaller than an inner diameter of the first central passage 13. A yarn inlet 12 communicating with the first central passage 13 is formed in a side wall of the upper tube body 10. The lower tube body 20 includes a base tube 21 and an extension tube 22. An upper end of the base tube 21 is fixedly connected and communicates with a lower end of the extension tube 22. A second central passage 23 is formed inside both the base body 21 and the extension tube 22. A plurality of spiral air inlets 211 communicating with the second central passage 23 are formed in a side wall of the base tube 21. A lower end of the base tube 21 is fixedly inserted into a mounting hole 33 of a base 30. A part, provided with the spiral air inlets 211, of the base tube 21 can be located in an air inlet chamber 32 of the base 30. An oblique-cut air outlet 221 communicating with the second central passage 23 is formed in an upper end of the extension tube 22. The extension tube 22 is fixedly inserted into the lower opening. The oblique-cut air outlet 221 of the extension tube 22 is located in the first central passage 13 and located in a profile projection on a side of the yarn inlet 12. The oblique-cut air outlet 221 has an overlapping region with the yarn inlet 12. When an axis of the upper tube body 10 is in a vertical direction, a lowest end of the oblique-cut air outlet 221 is not higher than a middle part of the yarn inlet 12, and an uppermost end of the oblique-cut air outlet 221 is not higher than an uppermost end of the yarn inlet 12. Under an action of external force, the upper tube body 10 can rotate circumferentially about a first axis relative to the lower tube body 20. The inner diameter of the first central passage 13 is larger than an inner diameter of the second central passage 23, and the inner diameter of the second central passage 23 is smaller than an inner diameter of a gas inlet of the air inlet chamber 32 of the base 30. Each spiral air inlet 211 can guide an airflow to enter the second central passage spirally 23 and flow to the first central passage 13. A high-speed airflow flowing through the first central passage 13 can form a negative pressure at the yarn inlet 12 and inhale yarn.

[0026] The spiral air inlets 211 which can be directly placed inside the air inlet chamber 32 of the base 30 are used for enabling the airflow to enter into the first central passage 13 from the oblique-cut air outlet 221 through the second central passage 23 in a spiral airflow manner. In a process that the airflow passes through the oblique-cut air outlet 221 and the yarn 12, two steams of mainstream spiral airflows can be formed (some other spiral airflows may exist in this process, and only the two steams of mainstream spiral airflows are described here). One of the two steams of mainstream spiral airflows is a spiral airflow formed by collision of a middle part of gas from the oblique-cut air outlet 221 and an inner wall of the first central passage 13. The other of the two steams of mainstream spiral airflows is another spiral airflow formed by combined action of a part of gas from the oblique-cut air outlet 221 and gas inhaled from the yarn inlet 12. The two steams of mainstream spiral airflows are two steams of stable spiral airflows with opposite spiral directions finally formed inside the first central passage 13 located above the oblique-cut air outlet 221 and the yarn inlet 12, where the spiral airflow with opposite yarn twist is used for untwisting yarn. A relative position of an incision direction of the oblique-cut air outlet 221 and the yarn inlet 12 can be changed through rotation therebetween. Therefore, firstly, when yarn with different untwisted directions is untwisted, different untwisted positions can be switched through symmetrical rotation between the incision direction of the oblique-cut air outlet 221 and the yarn inlet 12. Secondly, airflow cyclone inside the first central passage 13 can be adjusted and changed through the rotation between the incision direction of the oblique-cut air outlet 221 and the yarn inlet 12, so that the untwisting pipe can be applicable to untwisting different yarn. The untwisting pipe 100 can be quickly and effectively adjusted according to different needs, so that the adjustability and applicability of the untwisting pipe 100 are improved.

[0027] Specifically, the inner diameter of the second central passage 23 is smaller than the inner diameter of the gas inlet of the air inlet chamber 32 of the base 30 and the inner diameter of the first central passage 13 to form a Venturi tube structure.

[0028] Where, in order to improve accuracy of relative rotation adjustment between the upper tube body 10 and the lower tube body 20, the following arrangement can also be made.

[0029] In an optional solution of the embodiment, relatively preferably, as shown in FIG. 1 and FIG. 2, a plurality of first scale lines Mare arranged on a lower end face of the upper tube body 10 around a circumferential direction of the upper tube body 10, and a second scale line 24 is arranged at a position, corresponding to the oblique-cut air outlet 221, of the base tube 21. The second scale line 24 is used for indicating an orientation of the oblique-cut air outlet 221, position adjustment indications of relative positions between the oblique-cut air outlet 221 and the yarn inlet 12 are realized through different alignment and cooperation of different first scale lines 14 and second scale lines 24, so that the adjustments for the positions are realized conveniently and more accurately.

[0030] Where, the relative positions between the first central passage 13 and the second central passage 23 are as follows: In an optional solution of the embodiment, more preferably, as shown in FIG. 1, the first central passage 13 and the second central passage 23 are coaxially arranged, so that the high-speed airflow inside the second central passage 23 can enter into the first central passage 13 more stably.

[0031] Specifically, at this time, the first axis is coaxial with an axis of the first central passage 13 or an axis of the second central passage 23.

[0032] Where, an arrangement about the yarn inlet 12 is as follows: In an optional solution of the embodiment, more preferably, as shown in FIG. 1 and FIG. 2, the yarn inlet 12 is an oblique port with an inner side facing the yarn outlet 11, and the yarn moves towards the yarn outlet 11 more smoothly after the yarn enters into the first central passage 13.

[0033] Where, an arrangement about the spiral air inlet 211 is as follows: Specifically, parameters, such as quantity, positions and sizes, of the spiral air inlets 211 can be determined according to actual airflow flowing analogue simulation effect. The spiral air inlets 211 include, but are not limited to, four spiral air inlets as shown in FIG. 1 and FIG. 2. Each spiral air inlet 211 is used for enabling the airflow inside the air inlet chamber 32 to enter into the second central passage 23 uniformly and rotatably.

[0034] Where, in order to ensure sufficient air intake in the second central passage 23, an arrangement may be as follows.

[0035] In an optional solution of the embodiment, more preferably, as shown in FIG. 1 and FIG. 2, a lower air inlet 212 communicating with the second central passage 23 is also formed in the lower end of the base tube 21. The lower air inlet 212 can be matched with each spiral air inlet 211 for combined action, and a stable spiral airflow is formed inside the second central passage 23 to ensure sufficient air intake.

[0036] Where, an arrangement about the oblique-cut air outlet 221 is as follows: In an optional solution of the embodiment, more preferably, an included angle between an oblique surface of the oblique-cut air outlet 221 and an axis of the extension tube 22 is 30° to 45°. The inclined angle of the oblique-cut air outlet 221 can ensure combined action of the oblique-cut air outlet 221 and gas entering at the yarn inlet 12 to generate a spiral airflow with better effect.

[0037] Specifically, the oblique surface of the oblique-cut air outlet 221 is an end face formed after the extension tube 22 is oblique.

[0038] Where, other explanations about the untwisting pipe 100 are as follows: Specifically, in a state where the base tube 21 has the lower air inlet 212 and four spiral air inlets 211, an airflow flowing schematic diagram in the longitudinal section is shown in FIG. 5. The airflow flowing schematic diagrams when the airflow sequentially passes through the second central passage 23, the extension tube 22 and the first central passage 13 under a perspective of a cross section are as shown in FIG. 7 to FIG. 13.

[0039] Specifically, the airflow cyclone inside the first central passage 13 is changed by rotating relative positions between the oblique-cut air outlet 221 and the yarn outlet 11. As shown in FIG. 14, under a perspective of a top, the relative positions of a central line of the oblique-cut air outlet 221 and a horizontal central line of the yarn outlet 11 are formed by 45°. As shown in FIG. 15, under the perspective of the top, the relative positions of the central line of the oblique-cut air outlet 221 and the horizontal central line of the yarn outlet 11 are formed by 70°. FIG. 14 and FIG. 15 are airflow flowing diagrams at the same position of the upper tube body 10. Thus, when the oblique-cut air outlet 221 is located at the position of 45° in FIG. 14, two steams of formed mainstream spiral airflows can be formed and stabilized earlier than two steams of mainstream spiral airflows formed at the position of 70° in FIG. 15. Namely, due to different relative positions between the oblique-cut air outlet 221 and the yarn outlet 11, a distance between two steams of final mainstream spiral airflows and the yarn outlet 11 can be changed. When the two steams of mainstream spiral airflows get close to the yarn outlet 11, incoming yarn can be untwisted earlier.

[0040] Where, a structure of the base 30 is as follows: Specifically, the base 30 is an existing device, which has an air inlet chamber 32, a gas inlet 31 communicating with the air inlet chamber 32, and a mounting hole 33 communicating with the air inlet chamber 32. A guide slot 34 is also formed in a position, corresponding to the yarn inlet 12 of the untwisting pipe 100, of the base 30.

[0041] Specifically, a primary function of the base 30 is to provide air intake and to fixedly support the untwisting pipe 100. A primary function of the untwisting pipe 100 is to untwist yarn.

[0042] Specific examples are used for illustration of the principles and implementation methods of the present disclosure. The description of the above-mentioned embodiments is used to help illustrate the method and its core principles of the present disclosure. In addition, those skilled in the art can make various modifications in terms of specific embodiments and scope of application in accordance with the teachings of the present disclosure. In summary, the contents of this specification should not be understood as the limitation of the present disclosure.

Claims

1. An untwisting pipe, characterized in that the untwisting pipe comprising an upper tube body and a lower tube body, wherein a first central passage is formed inside the upper tube body, a yarn outlet and a lower opening communicating with the first central passage are formed in both ends of the upper tube body, respectively, and an inner diameter of the lower opening is smaller than an inner diameter of the first central passage; a yarn inlet communicating with the first central passage is formed in a side wall of the upper tube body; the lower tube body comprises a base tube and an extension tube, an upper end of the base tube is fixedly connected and communicates with a lower end of the extension tube, and a second central passage is formed inside both the base body and the extension tube; several spiral air inlets communicating with the second central passage are formed in a side wall of the base tube, a lower end of the base tube is fixedly inserted into a mounting hole of a base, and a part, provided with the spiral air inlets, of the base tube is able to be located in an air inlet chamber of the base; an oblique-cut air outlet communicating with the second central passage is formed in an upper end of the extension tube, the extension tube is fixedly inserted into the lower opening, the oblique-cut air outlet of the extension tube is located in the first central passage and located in a profile projection on a side of the yarn inlet, and the oblique-cut air outlet has an overlapping region with the yarn inlet; when an axis of the upper tube body is in a vertical direction, a lowest end of the oblique-cut air outlet is not higher than a middle part of the yarn inlet, and an uppermost end of the oblique-cut air outlet is not higher than an uppermost end of the yarn inlet; under an action of external force, the upper tube body is able to rotate circumferentially about a first axis relative to the lower tube body; the inner diameter of the first central passage is larger than an inner diameter of the second central passage, and the inner diameter of the second central passage is smaller than an inner diameter of a gas inlet of the air inlet chamber of the base; each spiral air inlet is able to guide an airflow to enter the second central passage spirally and flow to the first central passage; and a high-speed airflow flowing through the first central passage is able to form a negative pressure at the yarn inlet and inhale yarn.

2. The untwisting pipe according to claim 1, characterized in that a plurality of first scale lines are arranged on a lower end face of the upper tube body around a circumferential direction of the upper tube body, and a second scale line is arranged at a position, corresponding to the oblique-cut air outlet, of the base tube.

3. The untwisting pipe according to claim 1, characterized in that the first central passage and the second central passage are coaxially arranged.

4. The untwisting pipe according to claim 1, characterized in that the yarn inlet is an oblique port with an inner side facing the yarn outlet.

5. The untwisting pipe according to claim 1, characterized in that a lower air inlet communicating with the second central passage is further formed in the lower end of the base tube.

6. The untwisting pipe according to claim 1, characterized in that an included angle between an oblique surface of the oblique-cut air outlet and an axis of the extension tube is 30° to 45°.

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