Slitter edge yarn suction device

Abstract

The utility model discloses a waste edge yarn suction device which comprises a yarn suction pipe and a yarn suction nozzle, the yarn suction nozzle comprises a suction nozzle body located outside the yarn suction pipe and a connecting pipe installed in an inner cavity of the yarn suction pipe, a reducer pipe is installed in the inner cavity at one end of the yarn suction pipe, and an air inlet flow channel is arranged on the outer surface of the connecting pipe. When the air jet loom works, air flow is injected into the air inlet connector and flows into the air inlet flow channel on the outer surface of the connecting pipe through the air inlet connector, and the air flow injected into the air inlet flow channel flows into the inner cavity of the yarn suction pipe through the reducer pipe under the guidance of the air inlet flow channel and flows out from the other end of the yarn suction pipe. When the yarn suction nozzle is cut off, air in the inner cavity of the reducer pipe and the inner cavity of the yarn suction pipe is driven to flow, so that the air in the inner cavity of the reducer pipe and the inner cavity of the yarn suction pipe flows out from the other end of the yarn suction pipe, negative pressure is formed in the inner cavity of the yarn suction nozzle, a suck-back effect is generated, and cut waste edge yarn is sucked into the yarn suction pipe through the yarn suction nozzle and discharged from the other end of the yarn suction pipe.

Description

Technical Field

[0001] The utility model relates to the technical field of textile equipment, and more specifically, to a waste edge yarn suction device. Background Art

[0002] After the edge of the textile is hemmed, there will be excess waste edge yarn. In order to prevent the waste edge yarn from affecting the operation of the loom, a waste edge yarn suction device is generally installed at the tail of the loom to suck and collect the waste edge yarn.

[0003] In the prior art, for example, the Chinese utility model with the publication number CN210394701U discloses a waste edge yarn suction device for an air-jet loom, which includes a box body. A ventilation hole is opened on one inner wall of the box body, and an isolation net is fixedly installed in the ventilation hole. A fan is fixedly installed on the top of the box body. An air inlet pipe is fixedly installed on the air inlet of the fan, and the bottom end of the air inlet pipe is fixedly connected with the box body and corresponds to the ventilation hole at the bottom end. A push rod motor is fixedly installed on the inner wall of the top of the box body. A cross bar is fixedly installed on the output shaft of the push rod motor, and two connecting blocks are fixedly installed at the bottom of the cross bar. This solution can not only suck the waste edge yarn, but also solve the problem that the waste edge yarn may block the suction device to a certain extent, and avoid the situation that the working efficiency is affected due to problems with the suction device to a certain extent.

[0004] The above device has the following defects when in use: The waste edge yarn is stored in the box body. When the suction device is used next time, the waste edge yarn accumulated in the box body will block the isolation net under the action of the suction force of the fan, thereby affecting the effect of the suction device in sucking the waste edge yarn.

[0005] Therefore, a new solution is needed to solve the above problems. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a waste edge yarn suction device.

[0007] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0008] A waste edge yarn suction device includes a suction yarn tube and a suction yarn nozzle. The suction yarn nozzle is installed at one end of the suction yarn tube. The suction yarn nozzle includes a nozzle body located outside the suction yarn tube and a connecting tube installed in the inner cavity of the suction yarn tube. The inner cavity of the connecting tube is communicated with the inner cavity of the nozzle body. A reducing tube is installed in the inner cavity at one end of the suction yarn tube, and the reducing tube is located on the side of the connecting tube away from the nozzle body. The inner cavity of the connecting tube is communicated with the inner cavity of the suction yarn tube through the inner cavity of the reducing tube. An air inlet flow channel is provided on the outer surface of the connecting tube, and the air inlet flow channel is communicated with the inner cavity of the suction yarn tube through the inner cavity of the reducing tube. An air inlet interface is provided at one end of the suction yarn tube, and the inner cavity of the air inlet interface is communicated with the air inlet flow channel.

[0009] Further, the intake air flow channel includes an annular groove located on the outer surface of the connecting pipe and coaxial with the connecting pipe. A plurality of through holes are circumferentially formed on one side of the connecting pipe facing the diameter-changing pipe. The annular groove is communicated with the inner cavity of the diameter-changing pipe through the through holes.

[0010] Further, the diameter-changing pipe is axially divided into a first pipe section, a second pipe section, and a third pipe section. One end of the first pipe section abuts against the connecting pipe, and the inner cavity of the first pipe section is communicated with the intake air flow channel. The wall thickness of the first pipe section increases from one end to the other end of the first pipe section. The second pipe section is located between the first pipe section and the third pipe section. The wall thickness of the second pipe section remains unchanged from one end to the other end of the second pipe section. The inner cavity of the third pipe section is communicated with the inner cavity of the yarn suction pipe. The wall thickness of the third pipe section decreases from one end to the other end of the third pipe section. The wall thicknesses of the other end of the first pipe section, the second pipe section, and one end of the third pipe section are equal.

[0011] Further, a limiting groove is formed on the inner surface of one end of the yarn suction pipe. The connecting pipe and the diameter-changing pipe are installed in the limiting groove. One end of the diameter-changing pipe abuts against the connecting pipe, and the other end of the diameter-changing pipe abuts against the groove wall of the limiting groove.

[0012] Further, an intake hole is formed in the yarn suction pipe corresponding to the intake interface. The inner cavity of the intake interface is communicated with the intake air flow channel through the intake hole.

[0013] Further, the suction nozzle body is in a duckbill-like structure. The narrow end of the suction nozzle body is connected to the connecting pipe, and the wide end of the suction nozzle body is arranged away from the connecting pipe.

[0014] The beneficial effects of the present utility model are as follows:

[0015] 1. In the present utility model, when the air-jet loom is working, air flow is injected into the intake interface. The air flow flows into the intake air flow channel on the outer surface of the connecting pipe through the intake interface. Under the guidance of the intake air flow channel, the air flow injected into the intake air flow channel flows into the inner cavity of the yarn suction pipe through the diameter-changing pipe and flows out from the other end of the yarn suction pipe. During the flowing process of the injected air flow, it will drive the air flow in the inner cavities of the diameter-changing pipe and the yarn suction pipe, so that the air in the inner cavities of the diameter-changing pipe and the yarn suction pipe flows out from the other end of the yarn suction pipe, thereby forming a negative pressure in the inner cavity of the suction nozzle, generating a reverse suction effect, sucking the cut waste edge yarn into the yarn suction pipe through the suction nozzle, and discharging it from the other end of the yarn suction pipe; since the cut waste edge yarn is transferred and far away from the yarn suction device, it will not affect the suction effect on the waste edge yarn.

[0016] 2. In the present utility model, by providing a reducing pipe, on the one hand, the inner diameter change of the reducing pipe is utilized to increase the flow velocity of the injected air flow, improve the negative pressure in the inner cavity of the yarn suction nozzle, and thus improve the reverse suction effect of the yarn suction nozzle on the waste edge yarn; on the other hand, the inner wall of the reducing pipe is utilized to guide and converge the air flow flowing out of the through hole and effectively flow into the inner cavity of the yarn suction pipe.

[0017] 3. The structure of the present utility model has few components, is easy to process, and has a low cost. Description of the Drawings

[0018] Figure 1 is a schematic structural view of a waste edge yarn suction device in this embodiment;

[0019] Figure 2 is a schematic sectional structural view of a waste edge yarn suction device in this embodiment;

[0020] Figure 3 is a schematic structural view of a yarn suction nozzle in this embodiment.

[0021] Reference numerals in the drawings: yarn suction pipe 1, limit groove 101, air inlet hole 102, yarn suction nozzle 2, nozzle body 201, connecting pipe 202, air inlet flow channel 203, annular groove 2031, through hole 2302, reducing pipe 3, first pipe section 301, second pipe section 302, third pipe section 303, air inlet interface 4, waste edge yarn 5, yarn scissors 6. Detailed Embodiment

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without making creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment: A waste edge yarn suction device, as Figures 1-3As shown in the figure, it includes a yarn suction tube 1 and a yarn suction nozzle 2. The yarn suction tube 1 is a tube body with openings at both ends. The yarn suction nozzle 2 is installed at one end of the yarn suction tube 1. The yarn suction nozzle 2 includes a nozzle body 201 located outside the yarn suction tube 1 and a connecting tube 202 installed inside the inner cavity of the yarn suction tube 1. The inner cavity of the connecting tube 202 is connected to the inner cavity of the nozzle body 201. A reducing tube 3 is installed inside the inner cavity at one end of the yarn suction tube 1, and the reducing tube 3 is located on the side of the connecting tube 202 away from the nozzle body 201. The reducing tube 3 is a tube body with openings at both ends. The inner cavity of the connecting tube 202 is connected to the inner cavity of the reducing tube 3 and is connected to the inner cavity of the yarn suction tube 1 through the inner cavity of the reducing tube 3. An air inlet channel 203 is provided on the outer surface of the connecting tube 202. The air inlet channel 203 is connected to the inner cavity of the reducing tube 3 and is connected to the inner cavity of the yarn suction tube 1 through the inner cavity of the reducing tube 3. An air inlet interface 4 is provided at one end of the yarn suction tube 1. The inner cavity of the air inlet interface 4 is connected to the air inlet channel 203.

[0024] During use, the yarn suction device is installed on the frame of the air-jet loom, and a yarn scissors 6 for cutting the waste edge yarn 5 is installed on the frame; as Figure 2 shown in the figure, when the air-jet loom is working, air is injected into the air inlet interface 4. The air flows into the air inlet channel 203 on the outer surface of the connecting tube 202 through the air inlet interface 4. Under the guidance of the air inlet channel 203, the air injected into the air inlet channel 203 flows into the inner cavity of the yarn suction tube 1 through the reducing tube 3 and flows out from the other end of the yarn suction tube 1. During the flow of the injected air, it will drive the air flow in the inner cavities of the reducing tube 3 and the yarn suction tube 1, so that the air in the inner cavities of the reducing tube 3 and the yarn suction tube 1 flows out from the other end of the yarn suction tube 1, thereby forming a negative pressure in the inner cavity of the yarn suction nozzle 2, generating a reverse suction effect. The tail end of the waste edge yarn 5 straightens the waste edge yarn 5 under the reverse suction action of the yarn suction nozzle 2, and then the waste edge yarn 5 is cut by the yarn scissors 6. The cut waste edge yarn 5 is sucked into the yarn suction tube 1 through the yarn suction nozzle 2 and discharged to a designated place, such as a storage box, from the other end of the yarn suction tube 1; since the cut waste edge yarn 5 is transferred and away from the yarn suction device, it will not affect the suction effect of the yarn suction device on the waste edge yarn 5; at the same time, by using the diameter reduction of the reducing tube 3, the flow rate of the injected air is increased to increase the negative pressure in the inner cavity of the yarn suction nozzle 2, thereby improving the reverse suction effect of the yarn suction nozzle 2 on the waste edge yarn 5.

[0025] Furthermore, as Figure 3As shown, the intake air flow passage 203 includes an annular groove 2031 located on the outer surface of the connecting pipe 202 and coaxial with the connecting pipe 202. A plurality of through holes 2302 are circumferentially formed on one side of the connecting pipe 202 facing the reduced-diameter pipe 3. The annular groove 2031 is communicated with the through holes 2302 and is communicated with the inner cavity of the reduced-diameter pipe 3 through the through holes 2302. Since the outer surface of the connecting pipe 202 is in abutting contact with the inner surface of the yarn suction pipe 1 to form a seal, after the air flow injected into the air inlet interface 4 flows into the annular groove 2031, it can only flow into the inner cavity of the reduced-diameter pipe 3 through the through holes 2302. By adopting the above design, on the one hand, the injected air flow can be guided into the intake air flow passage 203 and flow into the inner cavity of the reduced-diameter pipe 3 through the intake air flow passage 203, so as to form a negative pressure in the inner cavity of the yarn suction nozzle 2 and generate a reverse suction effect. On the other hand, by providing a plurality of through holes 2302, the through holes 2302 are used to increase the flow rate of the air flow.

[0026] Preferably, an air inlet hole 102 is formed in the yarn suction pipe 1 corresponding to the air inlet interface 4. The inner cavity of the air inlet interface 4 is communicated with the intake air flow passage 203 through the air inlet hole 102. By providing the air inlet hole 102, it is convenient to make the air flow injected into the air inlet interface 4 flow into the annular groove 2031.

[0027] Preferably, the nozzle body 201 has a duckbill-like structure, and its cross-section is trapezoidal, having a wide mouth end and a narrow mouth end. The narrow mouth end of the nozzle body 201 is connected to the connecting pipe 202, and the wide mouth end of the nozzle body 201 is arranged away from the connecting pipe 202 and corresponds to the waste edge yarn 5. By adopting the above design for the nozzle body 201, the suction range of the waste edge yarn 5 is increased, so that more waste edge yarn 5 can be sucked, and the suction effect and efficiency of the waste edge yarn 5 are improved.

[0028] Further, as Figure 2As shown in the figure, the reducing pipe 3 is axially divided into a first pipe section 301, a second pipe section 302, and a third pipe section 303. One end of the first pipe section 301 abuts against the connecting pipe 202, and the inner cavity of the first pipe section 301 is communicated with the air inlet passage 203. The wall thickness of the first pipe section 301 increases from one end to the other end of the first pipe section 301. The second pipe section 302 is located between the first pipe section 301 and the third pipe section 303. The wall thickness of the second pipe section 302 remains unchanged from one end to the other end of the second pipe section 302. The inner cavity of the third pipe section 303 is communicated with the inner cavity of the yarn suction pipe 1. The wall thickness of the third pipe section 303 decreases from one end to the other end of the third pipe section 303. The wall thicknesses of the other end of the first pipe section 301, the second pipe section 302, and one end of the third pipe section 303 are equal. That is, the first pipe section 301, the second pipe section 302, and the third pipe section 303 are arranged in sequence. The wall thickness of the first pipe section 301 gradually increases in the direction towards the second pipe section 302 until it is equal to the wall thickness of the second pipe section 302. The wall thickness of the third pipe section 303 gradually decreases in the direction away from the second pipe section 302 from being equal to the wall thickness of the second pipe section 302.

[0029] With the above design of the reducing pipe 3, on the one hand, the inner diameter change of the reducing pipe 3 is utilized to increase the flow velocity of the injected air flow; on the other hand, the inner wall of the reducing pipe 3 is utilized to guide and converge the air flow flowing out of the through hole 2302 and effectively flow into the inner cavity of the yarn suction pipe 1.

[0030] Preferably, a limiting groove 101 is provided on the inner surface of one end of the yarn suction pipe 1. The connecting pipe 202 and the reducing pipe 3 are installed in the limiting groove 101. One end of the reducing pipe 3 abuts against the connecting pipe 202, and the other end of the reducing pipe 3 abuts against the groove wall of the limiting groove 101. By providing the limiting groove 101, on the one hand, the installation positions of the connecting pipe 202 and the reducing pipe 3 are limited; on the other hand, the reducing pipe 3 is clamped and fixed by the cooperation of the connecting pipe 202 and the groove wall of the limiting groove 101 to prevent the reducing pipe 3 from loosening.

[0031] The above description is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A waste edge yarn suction device, comprising a suction yarn tube (1) and a suction yarn nozzle (2), characterized in that, The yarn suction nozzle (2) is installed at one end of the yarn suction tube (1). The yarn suction nozzle (2) includes a nozzle body (201) located outside the yarn suction tube (1) and a connecting tube (202) installed inside the inner cavity of the yarn suction tube (1). The inner cavity of the connecting tube (202) is communicated with the inner cavity of the nozzle body (201). A reducing pipe (3) is installed inside the inner cavity at one end of the yarn suction tube (1), and the reducing pipe (3) is located on the side of the connecting tube (202) away from the nozzle body (201). The inner cavity of the connecting tube (202) is communicated with the inner cavity of the yarn suction tube (1) through the inner cavity of the reducing pipe (3). An air inlet channel (203) is provided on the outer surface of the connecting tube (202), and the air inlet channel (203) is communicated with the inner cavity of the yarn suction tube (1) through the inner cavity of the reducing pipe (3). An air inlet interface (4) is provided at one end of the yarn suction tube (1), and the inner cavity of the air inlet interface (4) is communicated with the air inlet channel (203).

2. The waste edge yarn suction device according to claim 1, characterized in that, The air inlet channel (203) includes an annular groove (2031) located on the outer surface of the connecting tube (202) and coaxial with the connecting tube (202). A plurality of through holes (2302) are circumferentially provided on the side of the connecting tube (202) facing the reducing pipe (3), and the annular groove (2031) is communicated with the inner cavity of the reducing pipe (3) through the through holes (2302).

3. The waste edge yarn suction device according to claim 1, characterized in that, The reducing pipe (3) is axially divided into a first pipe section (301), a second pipe section (302) and a third pipe section (303). One end of the first pipe section (301) abuts against the connecting tube (202), and the inner cavity of the first pipe section (301) is communicated with the air inlet channel (203). The wall thickness of the first pipe section (301) increases from one end to the other end of the first pipe section (301). The second pipe section (302) is located between the first pipe section (301) and the third pipe section (303). The wall thickness of the second pipe section (302) remains unchanged from one end to the other end of the second pipe section (302). The inner cavity of the third pipe section (303) is communicated with the inner cavity of the yarn suction tube (1). The wall thickness of the third pipe section (303) decreases from one end to the other end of the third pipe section (303). The wall thicknesses of the other end of the first pipe section (301), the second pipe section (302) and one end of the third pipe section (303) are equal.

4. The waste edge yarn suction device according to claim 3, wherein, A limiting groove (101) is provided on the inner surface at one end of the yarn suction tube (1), and the connecting tube (202) and the reducing pipe (3) are installed in the limiting groove (101). One end of the reducing pipe (3) abuts against the connecting tube (202), and the other end of the reducing pipe (3) abuts against the groove wall of the limiting groove (101).

5. The waste edge yarn suction device according to claim 1, characterized in that, An air inlet hole (102) is provided at the position of the yarn suction tube (1) corresponding to the air inlet interface (4), and the inner cavity of the air inlet interface (4) is communicated with the air inlet channel (203) through the air inlet hole (102).

6. The waste edge yarn suction device according to claim 1, characterized in that The nozzle body (201) is in the shape of a duckbill. The narrow end of the nozzle body (201) is connected to the connecting tube (202), and the wide end of the nozzle body (201) is arranged away from the connecting tube (202).

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