Anti-attrition device for nozzle of air jet loom

Abstract

The utility model provides an air jet loom nozzle anti-attrition device, which belongs to the technical field of air jet loom anti-attrition structures, and comprises a yarn inlet pipe arranged in a main nozzle, an air inlet interface communicated with the top of the middle section of the yarn inlet pipe, a second positioning ring detachably arranged at the yarn outlet end of the yarn inlet pipe, and an external threaded pipe arranged on one side of the second positioning ring, an anti-attrition sleeve is arranged on one side of the externally-connected threaded pipe, an internally-connected thread is arranged at the end, close to the interior of the externally-connected threaded pipe, of the anti-attrition sleeve, a bonding layer is arranged on the inner wall of the anti-attrition sleeve, and an anti-attrition piece is arranged on the face, away from the inner wall of the anti-attrition sleeve, of the bonding layer. According to the utility model, the yarn discharged out of the main nozzle is subjected to anti-friction through the anti-friction sheet in the anti-friction sleeve, so that the friction between the yarn and the discharge end of the main nozzle is reduced, when the anti-friction sheet needs to be replaced, the anti-friction sleeve is detached through the detachable threaded connection of the external threaded pipe and the internal threaded pipe, and then the anti-friction sheet is taken out for replacement; therefore, the service life of the main nozzle is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to air jet loom wear -reducing structure technical field, concretely relates to air jet loom nozzle wear -reducing device. BACKGROUND

[0002] Air jet loom is a kind of air jet way is carried out to shuttleless loom, its working principle mainly through the jet of air flow to pull weft yarn, completes weaving process, the nozzle on air jet loom is various, including main nozzle, auxiliary nozzle, tail nozzle etc., each nozzle has its specific function and effect.

[0003] In the related art, in the working process of air jet loom, the main nozzle needs to contact and rub with yarn for a long time, especially the friction of warp yarn on the surface of the nozzle, which causes the main nozzle to wear faster, so the main nozzle needs to be replaced frequently. However, when replacing the main nozzle, it will waste a lot of time and is not convenient to replace. In addition, it also increases the cost of main nozzle consumables. To solve the above problems, the air jet loom nozzle wear-reducing device is proposed to solve the above problems. SUMMARY

[0004] Therefore, the yarn is reduced by the wear-resistant sheet in the wear-resistant sleeve, thereby reducing the friction between the yarn and the discharge end of the main nozzle. When the wear-resistant sheet needs to be replaced, the outer threaded pipe and the inner threaded pipe are detachably connected by thread connection, so that the wear-resistant sleeve is disassembled, and then the wear-resistant sheet is taken out for replacement. The wear-resistant sleeve can be prepared in advance, which is a low-cost consumable and is convenient to replace, thereby prolonging the service life of the main nozzle.

[0005] To solve the above technical problems, the air jet loom nozzle wear-reducing device is provided, which includes a yarn inlet pipe arranged in the main nozzle, an air inlet interface arranged at the top of the middle section of the yarn inlet pipe, a quick release connector arranged at the yarn outlet end of the yarn inlet pipe, a first positioning ring arranged in the quick release connector, a second positioning ring detachably arranged at the front end of the first positioning ring, an outer threaded pipe arranged at the inner ring edge of the second positioning ring, a wear-resistant sleeve arranged at the side of the outer threaded pipe away from the second positioning ring, an inner thread arranged at one end of the wear-resistant sleeve close to the outer threaded pipe, a sealing ring arranged outside one end of the wear-resistant sleeve away from the outer threaded pipe, an adhesive layer arranged on the inner wall of the wear-resistant sleeve, and a wear-resistant sheet arranged on the side of the adhesive layer away from the inner wall of the wear-resistant sleeve.

[0006] A plurality of threaded holes are arranged on the surface of the second positioning ring, the threaded holes are used for installing positioning bolts, each threaded hole penetrates the second positioning ring and is embedded in the first positioning ring, and one positioning bolt is arranged in each threaded hole.

[0007] The inner ring of the first positioning ring and the inner ring of the second positioning ring are both provided with a sealing ring, which is used to reduce the air leakage of the connecting gap between the second positioning ring and the quick release connector, thereby improving the sealing effect of the gas outlet end of the main nozzle.

[0008] The air inlet interface is provided with a stepped air supply channel, which is used to reduce the vorticity of the airflow, suppress the diffusion of the jet flow and increase the range, so as to ensure that the airflow maintains a certain direction and stability during the jetting process, thereby accurately guiding the weft yarn. The air inlet connecting pipe is arranged at the air inlet end of the stepped air supply channel and is used to communicate the stepped air supply channel with the external air jet equipment. The first flow guide plate is arranged at the top of the air outlet end of the stepped air supply channel and is used to guide the airflow in the stepped air supply channel into the yarn feeding pipe. The air outlet end of the first flow guide plate is in communication with the yarn feeding pipe.

[0009] The bottom of the stepped air supply channel is provided with a sealing block, which is used to seal the bottom of the air inlet interface, so as to prevent the air jet equipment from directly acting on the yarn in the yarn feeding pipe, thereby preventing the high-pressure gas from damaging the yarn in the yarn feeding pipe. The sealing block seals the bottom of the air inlet interface.

[0010] The bottom of the end of the sealing block close to the first flow guide plate is provided with a second flow guide plate, which is used to act on the yarn with the high-pressure gas after the flow guide, thereby realizing the conveying of the yarn.

[0011] The inner wall of the yarn feeding pipe is provided with a sliding plate, which is used to reduce the friction between the yarn and the yarn feeding pipe.

[0012] In summary, compared with the prior art, the present application has at least one of the following beneficial technical effects:

[0013] 1. The yarn passes through the wear-resistant sheet in the wear-resistant sleeve to reduce the wear of the yarn discharged from the main nozzle, thereby reducing the friction between the yarn and the discharge end of the main nozzle. When the wear-resistant sheet needs to be replaced, the wear-resistant sleeve can be detached through the detachable threaded connection between the external threaded pipe and the internal threaded pipe, and then the wear-resistant sheet can be taken out for replacement. The wear-resistant sleeve can be prepared in advance, which is a low-cost consumable and is convenient to replace, thereby prolonging the service life of the main nozzle.

[0014] 2. The air jet equipment is in communication with the yarn feeding pipe in the main nozzle through the air inlet connecting pipe in the air inlet interface and reduces the air pressure of the air jet equipment through the stepped air supply pipe. The stepped air supply channel is used to reduce the vorticity of the airflow, suppress the diffusion of the jet flow and increase the range, so as to ensure that the airflow maintains a certain direction and stability during the jetting process, thereby accurately guiding the weft yarn.

[0015] 3. The yarn in the yarn feeding tube is moved to the outlet of the main nozzle by the air pressure guided by the first and second flow guide plates, and the yarn is moved to the first and second positioning rings through the material sliding plate, and the yarn is abraded once by the material sliding plate and the sealing ring. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a schematic view of the main body structure of the utility model;

[0017] Figure 2 It is a sectional view of the main body of the utility model;

[0018] Figure 3 It is a schematic view of the utility model Figure 2 A local enlarged view;

[0019] Figure 4 It is a top sectional view of the utility model.

[0020] The figure mark explanation: 100, main nozzle; 101, yarn feeding tube; 102, air inlet; 103, quick release joint; 200, first positioning ring; 201, second positioning ring; 202, external thread pipe; 203, abrasion reducing sleeve; 204, internal thread; 205, sealing ring; 206, adhesive layer; 207, anti-abrasion sheet; 208, threaded hole; 209, positioning bolt; 210, sealing ring; 300, stepped air duct; 301, air inlet connecting pipe; 302, first flow guide plate; 303, sealing block; 304, second flow guide plate; 305, material sliding plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the following will combine the drawings of the embodiments of the utility model to make the description. Figures 1-4 The technical scheme of the embodiments of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by the person skilled in the art belong to the scope of protection of the utility model.

[0022] As Figures 1-4The embodiment provides a jet loom nozzle wear-reducing device, which comprises a yarn inlet pipe 101 arranged in a main nozzle 100, the yarn inlet pipe 101 is hot melt connected in the main nozzle 100, the inner surface of the yarn inlet pipe 101 is polished, a gas inlet 102 is arranged at the top of the middle section of the yarn inlet pipe 101, the gas inlet 102 is used for supplying gas to the yarn inlet pipe 101, so that the yarn in the yarn inlet pipe 101 is sent out of the main nozzle 100, a quick release connector 103 is arranged at the yarn outlet end of the yarn inlet pipe 101, the quick release connector 103 is used for conveniently disassembling the discharge end of the main nozzle 100, so that the main nozzle 100 is conveniently maintained, a first positioning ring 200 is arranged in the quick release connector 103, the first positioning ring 200 is fixedly connected with the inner wall of the quick release connector 103 through hot melting or welding, a second positioning ring 201 is detachably arranged at the front end of the first positioning ring 200, the second positioning ring 201 is consistent in size with the first positioning ring 200, and the second positioning ring 201 can be made of smooth plastic or smooth steel, an outer threaded pipe 202 is arranged at the inner ring edge of the second positioning ring 201, the outer threaded pipe 202 is connected with the second positioning ring 201 through welding or hot melting, a wear-reducing sleeve 203 is arranged at the side, away from the second positioning ring 201, of the outer threaded pipe 202, the wear-reducing sleeve 203 is concentric with the yarn inlet pipe 101 and the quick release connector 103, an inner thread 204 is arranged at the end, close to the outer threaded pipe 202, of the wear-reducing sleeve 203, the inner thread 204 is connected with the inner wall of the wear-reducing sleeve 203 through welding or hot melting, a sealing ring 205 is arranged at the outer end, away from the outer threaded pipe 202, of the wear-reducing sleeve 203, the sealing ring 205 is fixedly connected with the wear-reducing sleeve 203 through welding or hot melting, an adhesive layer 206 is arranged on the inner wall of the wear-reducing sleeve 203, the adhesive layer 206 is adhered to the inner wall of the wear-reducing sleeve 203 through an adhesive, and a wear-resistant sheet 207 is arranged at the side, away from the inner wall of the wear-reducing sleeve 203, of the adhesive layer 206, the wear-resistant sheet 207 can be disposable, and the wear-resistant sheet 207 is a circular gasket.

[0023] In use, the yarn is reduced in wear by the wear-resistant sheet 207 in the wear-reducing sleeve 203, so that the friction between the yarn and the discharge end of the main nozzle 100 is reduced, when the wear-resistant sheet 207 needs to be replaced, the wear-reducing sleeve 203 is disassembled through detachable threaded connection of the outer threaded pipe 202 and the inner thread 204, and then the wear-resistant sheet 207 is taken out for replacement, the wear-reducing sleeve 203 can be prepared in advance, is a low-cost consumable and is convenient to replace, and therefore the service life of the main nozzle 100 is prolonged.

[0024] The embodiment provides a jet loom nozzle wear-reducing device,

[0025] As Figure 1 , 2As shown in FIGS. 3, the surface of the second positioning ring 201 is provided with a plurality of threaded holes 208 for mounting positioning bolts 209, each threaded hole 208 is embedded in the first positioning ring 200 through the second positioning ring 201, and each threaded hole 208 is provided with a positioning bolt 209 for connecting and fixing the second positioning ring 201 and the first positioning ring 200. A sealing ring 210 is arranged in the inner ring of the first positioning ring 200 and the inner ring of the second positioning ring 201.

[0026] The effect is that the sealing ring 210 is used to reduce the air leakage amount of the connection gap between the second positioning ring 201 and the quick release connector 103, thereby improving the sealing effect of the air outlet end of the main nozzle 100 and preventing air leakage from the second positioning ring 201.

[0027] As shown in FIGS. 3, the surface of the second positioning ring 201 is provided with a plurality of threaded holes 208 for mounting positioning bolts 209, each threaded hole 208 is embedded in the first positioning ring 200 through the second positioning ring 201, and each threaded hole 208 is provided with a positioning bolt 209 for connecting and fixing the second positioning ring 201 and the first positioning ring 200. A sealing ring 210 is arranged in the inner ring of the first positioning ring 200 and the inner ring of the second positioning ring 201. Figure 2 As shown in FIGS. 3, the surface of the second positioning ring 201 is provided with a plurality of threaded holes 208 for mounting positioning bolts 209, each threaded hole 208 is embedded in the first positioning ring 200 through the second positioning ring 201, and each threaded hole 208 is provided with a positioning bolt 209 for connecting and fixing the second positioning ring 201 and the first positioning ring 200. A sealing ring 210 is arranged in the inner ring of the first positioning ring 200 and the inner ring of the second positioning ring 201.

[0028] The effect is that the sealing ring 210 is used to reduce the air leakage amount of the connection gap between the second positioning ring 201 and the quick release connector 103, thereby improving the sealing effect of the air outlet end of the main nozzle 100 and preventing air leakage from the second positioning ring 201.

[0029] As shown in FIGS. 3, the surface of the second positioning ring 201 is provided with a plurality of threaded holes 208 for mounting positioning bolts 209, each threaded hole 208 is embedded in the first positioning ring 200 through the second positioning ring 201, and each threaded hole 208 is provided with a positioning bolt 209 for connecting and fixing the second positioning ring 201 and the first positioning ring 200. A sealing ring 210 is arranged in the inner ring of the first positioning ring 200 and the inner ring of the second positioning ring 201. Figure 2 4 As shown in FIGS. 3, the surface of the second positioning ring 201 is provided with a plurality of threaded holes 208 for mounting positioning bolts 209, each threaded hole 208 is embedded in the first positioning ring 200 through the second positioning ring 201, and each threaded hole 208 is provided with a positioning bolt 209 for connecting and fixing the second positioning ring 201 and the first positioning ring 200. A sealing ring 210 is arranged in the inner ring of the first positioning ring 200 and the inner ring of the second positioning ring 201.

[0030] ​The effect is that the sealing block 303 is used for sealing the bottom of the air inlet interface 102 and separating the stepped air supply channel 300 from the yarn inlet pipe 101, so as to prevent the air jet device from directly acting on the yarn in the yarn inlet pipe 101, thereby preventing the high-pressure gas from damaging the yarn in the yarn inlet pipe 101.

[0031] As shown in Figure 2 , 4 The sealing block 303 is provided with a second guide plate 304 at the bottom of one end close to the first guide plate 302, and the sealing block 303 and the second guide plate 304 are welded or hot-melt fixed. The guide slope of the second guide plate 304 is downward, and a plurality of buffer protrusions are arranged on the guide slope of the second guide plate 304, thereby realizing the conveying of the yarn. The inner wall of the yarn inlet pipe 101 is provided with a sliding plate 305, which is an arc-shaped tile-shaped plate. The yarn inlet pipe 101 and the sliding plate 305 can be hot-melt connected. The sliding plate 305 is used for reducing the friction between the yarn and the yarn inlet pipe 101.

[0032] The effect is that the second guide plate 304 is used for acting on the yarn with the high-pressure gas after the guide, and the yarn is moved by the high-pressure gas, thereby realizing the conveying of the yarn.

[0033] Working principle: The air jet device is communicated with the yarn inlet pipe 101 in the main nozzle 100 through the air inlet connecting pipe 301 in the air inlet interface 102, the air pressure of the air jet device is reduced through the stepped air supply pipe, the yarn in the yarn inlet pipe 101 is moved to the outlet of the main nozzle 100 by the air pressure guided by the first guide plate 302 and the second guide plate 304, the yarn moves to the first positioning ring 200 and the second positioning ring 201 through the sliding plate 305, the yarn is first abraded by the sliding plate 305 and the sealing ring 210, the second positioning ring 201 and the first positioning ring 200 are fixedly connected through the positioning bolt 209 matched by the threaded holes 208, the yarn enters the abrasion-reducing sleeve 203 after passing through the second positioning ring 201, and the yarn discharged from the main nozzle 100 is abraded by the abrasion-resistant sheet 207, thereby reducing the friction between the yarn and the discharge end of the main nozzle 100. When it is necessary to replace the abrasion-resistant sheet 207, the abrasion-resistant sheet 207 is replaced by detachably connecting the external threaded pipe 202 and the internal threaded pipe 204, thereby disassembling the abrasion-reducing sleeve 203, and then taking out the abrasion-resistant sheet 207 for replacement. The abrasion-reducing sleeve 203 can be prepared in advance, which is a low-cost consumable and is convenient to replace, thereby prolonging the service life of the main nozzle 100.

[0034] In addition, it needs to be explained that, in the description of the present application, unless otherwise specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The above is the preferred embodiment of the present application, it should be pointed out that, for those skilled in the art, without departing from the principles described in the present application, a number of improvements and refinements can be made, these improvements and refinements should also be considered as the protection scope of the present application.

Claims

1. A nozzle wear-reducing device for air-jet looms, comprising a yarn inlet tube (101) arranged in a main nozzle (100), a gas inlet port (102) arranged in the middle top of the yarn inlet tube (101), and a quick-release joint (103) arranged at the yarn outlet end of the yarn inlet tube (101), characterized in that: The quick release joint (103) is provided with a first positioning ring (200), the front end of the first positioning ring (200) is detachably provided with a second positioning ring (201), the inner ring edge of the second positioning ring (201) is provided with an external threaded pipe (202), the side of the external threaded pipe (202) away from the second positioning ring (201) is provided with an anti-friction sleeve (203), the end of the anti-friction sleeve (203) close to the external threaded pipe (202) is provided with an internal thread (204), the end of the anti-friction sleeve (203) away from the external threaded pipe (202) is provided with a sealing ring (205), the inner wall of the anti-friction sleeve (203) is provided with an adhesive layer (206), and the side of the adhesive layer (206) away from the inner wall of the anti-friction sleeve (203) is provided with an anti-abrasion sheet (207).

2. The air jet loom nozzle friction reducing device of claim 1, wherein: The surface of the second positioning ring (201) is provided with a plurality of threaded holes (208), each threaded hole (208) penetrates the second positioning ring (201) and is embedded in the first positioning ring (200), and each threaded hole (208) is provided with a positioning bolt (209).

3. The jet loom nozzle friction reducing device of claim 2, wherein: The inner ring of the first positioning ring (200) and the inner ring of the second positioning ring (201) are both provided with a sealing ring (210).

4. The jet loom nozzle friction reducing device of claim 3, wherein: The air inlet interface (102) is provided with a stepped air supply channel (300), the air inlet end of the stepped air supply channel (300) is provided with an air inlet connecting pipe (301), the top of the air outlet end of the stepped air supply channel (300) is provided with a first guide plate (302), and the air outlet end of the first guide plate (302) is communicated with the yarn inlet pipe (101).

5. The jet loom nozzle friction reducing device of claim 4, wherein: The bottom of the stepped air supply channel (300) is provided with a sealing block (303), and the sealing block (303) seals the bottom of the air inlet interface (102).

6. The air jet loom nozzle friction reducing device of claim 5, wherein: The bottom of the sealing block (303) close to the first guide plate (302) is provided with a second guide plate (304).

7. The air jet loom nozzle friction reducing device of claim 6, wherein: The inner wall of the yarn inlet pipe (101) is provided with a sliding plate (305).

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