Nozzle for water spraying braiding machine

Abstract

The utility model relates to the technical field of accessories of a water spraying knitting machine, and provides a nozzle for the water spraying knitting machine, which comprises a spraying body, a spraying needle and a flow guide ring, the spraying needle is arranged in the spraying body, and a needle head of the spraying needle penetrates through the flow guide ring, and is characterized in that the flow guide ring comprises an annular base body and a plurality of elastic petals which are distributed along the annular base body at intervals; the annular base body is installed in the spraying body, the elastic petals extend out of the spraying body and are obliquely arranged towards the spraying needle, and gaps between the adjacent elastic petals are filled with elastic films; the nozzle further comprises an adjusting ring and an end cover, an outer ring of the adjusting ring is coaxially fixed to the inner wall of the end cover, an inner ring of the adjusting ring sleeves all the elastic petals of the flow guide ring and abuts against all the elastic petals, the end cover is of a structure with two open ends, and the inner wall of the end cover is in threaded connection with the outer wall of the spray body. The utility model overcomes the defects in the prior art, is reasonable in design and convenient to adjust, and solves the technical problem that the actual jet effect of water flow and even weft yarns is influenced by the individual difference between the flow guide ring and the jet needle.

Description

Technical Field

[0001] The utility model relates to the technical field of accessories for water jet weaving machines, and particularly relates to a nozzle for a water jet weaving machine. Background Art

[0002] The nozzle of a water jet weaving machine drives the weft yarn to pass through the shed at high speed through high-pressure water to complete the weft insertion action. The nozzle mainly consists of a nozzle body, a nozzle needle, a bunching net and a flow guiding ring. The flow guiding ring has a tapered hole structure with a gradually decreasing diameter, which can make the concentration and extensibility of the water line better and more stable, and the water can carry the weft yarn and spray it over a longer distance. Due to the individual differences between the flow guiding ring and the nozzle needle, the actual spraying effect of the water flow and even the weft yarn is affected.

[0003] Therefore, we propose a nozzle for a water jet weaving machine. Content of the Utility Model

[0004] (1) Technical Problems to be Solved

[0005] Aiming at the deficiencies of the prior art, the utility model provides a nozzle for a water jet weaving machine, which overcomes the deficiencies of the prior art, is reasonably designed and convenient to adjust, and solves the technical problem that the individual differences between the flow guiding ring and the nozzle needle affect the actual spraying effect of the water flow and even the weft yarn.

[0006] (2) Technical Solutions

[0007] To achieve the above purposes, the utility model is realized through the following technical solutions:

[0008] A nozzle for a water jet weaving machine includes a nozzle body, a nozzle needle and a flow guiding ring. The nozzle needle is installed in the nozzle body, and the needle tip of the nozzle needle penetrates through the flow guiding ring. It is characterized in that:

[0009] The flow guiding ring includes a ring-shaped base body and a number of elastic petals distributed at intervals along the ring-shaped base body. The ring-shaped base body is installed in the nozzle body, and the elastic petals extend out of the nozzle body and are inclined towards the nozzle needle. The gap between adjacent elastic petals is filled with an elastic film;

[0010] The nozzle further includes an adjusting ring and an end cover. The outer ring of the adjusting ring is coaxially fixed to the inner wall of the end cover, and its inner ring is sleeved outside all the elastic petals of the flow guiding ring and presses against each elastic petal. The end cover has an open structure at both ends, and the inner wall of the end cover is threadedly connected to the outer wall of the nozzle body.

[0011] Further, the inner hole of the ring-shaped base body gradually decreases from the side of the nozzle needle towards the side of the end cover, and the hole wall of this inner hole is a curved surface.

[0012] Further, the ring-shaped base body is made of rubber material, the elastic petals are made of metal material, and the ring-shaped base body and the elastic petals are vulcanized and bonded.

[0013] Furthermore, the adjustment ring includes an inner ring and an outer ring, the inner ring and the outer ring are connected by a rib plate, and the inner ring is conical.

[0014] Furthermore, the elastic membrane is made of rubber material, the elastic flap is made of metal material, and the elastic membrane and the elastic flap are vulcanized and bonded.

[0015] Furthermore, the spray needle comprises a needle head and a needle body, the outer diameter of the needle head is smaller than the outer diameter of the needle body, the needle head passes through the guide ring, both ends of the needle body are sealed with the spray body through a first sealing ring, a plug is glued and fixed to the outside of one end of the needle body away from the needle head, and the outer wall of the plug is threadedly connected to the inner wall of the spray body;

[0016] A plurality of water inlet holes distributed at intervals are provided on the side wall of the spray body between the annular base and the needle body, and the axis of the water inlet hole is inclined relative to the axis of the spray body.

[0017] Furthermore, a guide ring is embedded in the opening of one end of the end cover away from the spray body.

[0018] Furthermore, the spray needle and the guide ring are both made of ceramic materials.

[0019] (III) Beneficial effects

[0020] The utility model provides a nozzle for a water jet weaving machine, which has the following beneficial effects: the guide ring is designed as a petal structure, and each elastic petal is connected by an elastic membrane. The end cover is screwed to drive the adjustment ring to move axially, and then the each elastic petal is gathered or loosened to adjust the gap size between the guide ring and the needle head, so that the actual spraying effect of water flow and weft yarn reaches the expected effect, thereby improving the practical effect of the nozzle. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the explosion structure of the utility model;

[0022] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0023] Figure 3 It is a schematic diagram of the structure of the adjustment ring and the guide ring in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the guide ring in the utility model.

[0025] In the figure:

[0026] 1. Spray needle;

[0027] 11. Needles;

[0028] 12. Needle body;

[0029] 2. Spray body;

[0030] 21. Water inlet chamber;

[0031] 22. Water inlet hole;

[0032] 3. Flow guide ring;

[0033] 31. Ring-shaped base body;

[0034] 32. Elastic flap;

[0035] 33. Gap;

[0036] 34. Elastic membrane;

[0037] 4. Adjusting ring;

[0038] 41. Outer ring;

[0039] 42. Inner ring;

[0040] 43. Rib plate;

[0041] 5. End cover;

[0042] 6. Guide ring;

[0043] 7. Plug. Specific embodiments

[0044] In order to make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0045] Refer to the attached Figures 1-4 , a nozzle for a water jet knitting machine, comprising a spray needle 1, a spray body 2, a flow guide ring 3, an adjusting ring 4, an end cover 5, and a guide ring 6;

[0046] The spray needle 1 is installed in the spray body 2, and the needle tip 11 of the spray needle 1 penetrates through the flow guide ring 3. Specifically, the spray needle 1 includes a needle tip 11 and a needle body 12. The needle tip 11 is thinner, and its outer diameter is smaller than the outer diameter of the needle body 12. The needle tip 11 penetrates through the flow guide ring 3. Both ends of the needle body 12 are hermetically fitted with the spray body 2 through a first sealing ring. An annular plug 7 is adhesively fixed to the outside of the end of the needle body 12 away from the needle tip 11, and the outer wall of the plug 7 is threadedly connected to the inner wall of the spray body 2;

[0047] The spray body 2 is located between the annular base 31 and the needle body 12 and is spaced apart from the needle head 11 to form a water inlet chamber 21. A plurality of spaced water inlet holes 22 are provided on the side wall of the water inlet chamber 21. The axis of the water inlet hole 22 is inclined relative to the axis of the spray body 2, that is, it is inclined relative to the direction of movement of the weft (the central axis hole of the spray needle 1 is the inlet hole for the weft to pass through), thereby increasing the pressure of the water outlet, increasing the weft bundling force and improving the spray distance of the weft;

[0048] The guide ring 3 includes an annular base 31 and a plurality of elastic petals 32 spaced apart along the annular base 31, wherein the annular base 31 is made of rubber, and the elastic petals 32 are made of metal. The outer wall of the annular base 31 is coaxially bonded and fixed to the inner wall of the spray body 2, and the annular base 31 is vulcanized and bonded to the elastic petals 32. The elastic petals 32 extend out of the spray body 2 and are inclined toward the spray needle 1. The gap 33 between adjacent elastic petals 32 is filled with an elastic membrane 34, and the elastic membrane 34 is made of rubber. Both sides of the elastic membrane 34 are vulcanized and bonded to the elastic petals 32, and the root thereof can be integrally formed with the annular base. The thickness of the elastic membrane 34 is generally the thickness of the elastic petals 32, so as to have good elasticity to adapt to the change in the size of the gap 33 when the elastic petals 32 are retracted or loosened;

[0049] The outer ring 41 of the adjustment ring 4 is coaxially fixed to the inner wall of the end cover 5, and the inner ring 42 thereof is sleeved outside all the elastic petals 32 of the guide ring 3 and presses against each elastic petal 32, and the end cover 5 is a structure with openings at both ends;

[0050] The end cap 5 has a guide ring 6 embedded in one end and the inner wall of the other end is threadedly connected to the outer wall of the spray body 2. By screwing the end cap 5, the adjustment ring 4 is driven to rotate synchronously and move axially, thereby closing or loosening each elastic petal 32 to adjust the size of the gap 33 between the guide ring 3 and the needle 11.

[0051] In this embodiment, the inner hole of the annular base 31 gradually contracts from the side of the spray needle 1 to the side of the end cover 5 , and the hole wall of the inner hole is a curved surface.

[0052] In this embodiment, the adjustment ring 4 includes an inner ring and an outer ring, and the inner ring and the outer ring are connected by a rib plate 43. The inner ring is conical, which increases the fitting area between the inner ring and the elastic petal 32 to a certain extent and improves stability.

[0053] In this embodiment, the spray needle 1 and the guide ring 6 are both made of ceramic material, preferably oxidized ceramic material, to improve the wear resistance and stability of the components.

[0054] The nozzle generally further includes a flow straightening ring (not shown in the figure). The flow straightening ring is disposed in the water inlet cavity and located between the water inlet holes and the annular base body. The outer wall of the flow straightening ring is adhesively fixed to the inner wall of the spray body. The flow straightening ring is provided with flow straightening holes or flow straightening comb teeth distributed in a ring shape, and a flow straightening gap with an opening at the end (the end facing the center side) is formed between adjacent flow straightening comb teeth.

[0055] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A nozzle for a water jet knitting machine, comprising a nozzle body, a spray needle and a flow guiding ring. The spray needle is installed in the nozzle body, and the needle tip of the spray needle penetrates through the flow guiding ring. It is characterized in that: The flow guiding ring includes an annular base body and a plurality of elastic petals spaced along the annular base body. The annular base body is installed in the nozzle body, and the elastic petals extend out of the nozzle body and are inclined towards the spray needle. An elastic film is filled in the gap between adjacent elastic petals; The nozzle further includes an adjusting ring and an end cap. The outer ring of the adjusting ring is coaxially fixed to the inner wall of the end cap, and its inner ring is sleeved outside all the elastic petals of the flow guiding ring and presses against each elastic petal. The end cap has an open structure at both ends, and the inner wall of the end cap is threadedly connected to the outer wall of the nozzle body.

2. The nozzle for a water jet loom according to claim 1, wherein: The inner hole of the annular base body gradually shrinks from the side of the spray needle towards the side of the end cap, and the hole wall of this inner hole is a curved surface.

3. The nozzle for a water-jet loom according to claim 2, characterized in that: The annular base body is made of rubber material, the elastic petals are made of metal material, and the annular base body and the elastic petals are vulcanized and bonded.

4. The nozzle for a water jet loom according to claim 2, characterized in that: The elastic film is made of rubber material, the elastic petals are made of metal material, and the elastic film and the elastic petals are vulcanized and bonded.

5. The nozzle for a water jet loom according to claim 1, characterized in that: The adjusting ring includes an inner ring and an outer ring, and the inner ring and the outer ring are connected by rib plates. The inner ring is conical.

6. The nozzle for a water-jet loom according to claim 1, characterized in that: The spray needle includes a needle tip and a needle body. The outer diameter of the needle tip is smaller than the outer diameter of the needle body. The needle tip penetrates through the flow guiding ring. Both ends of the needle body are hermetically fitted with the nozzle body through a first sealing ring. A plug is adhesively fixed to the outside of the end of the needle body away from the needle tip, and the outer wall of the plug is threadedly connected to the inner wall of the nozzle body; A plurality of water inlet holes are arranged at intervals on the side wall of the nozzle body between the annular base body and the needle body, and the axis of the water inlet hole is inclined with respect to the axis of the nozzle body.

7. The nozzle for a water jet loom according to claim 1, characterized in that: A guide ring is embedded in the opening at one end of the end cap away from the nozzle body.

8. The nozzle for a water jet loom according to claim 7, characterized in that: Both the spray needle and the guide ring are made of ceramic material.

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