DESC:TECHNICAL FIELD OF THE INVENTION

The present disclosure relates in general to the field of textile machinery. Particularly, but not exclusively, the present disclosure relates to an air jet spinning machine employed in textile machinery for production of core spun yarns. Further embodiments of the present disclosure disclose a mechanism for displacing a spindle of the air jet spinning machine.

BACKGROUND OF THE INVENTION

In air jet spinning machines, a nozzle block with plurality of air nozzles may be utilized for continuously imparting false-twists to a fibre bundle supplied from a pair of delivery rollers such as front draft rollers of a drafting arrangement, thereby entangling surface portion of the fibres from the fibre bundle around the core portion thereof to form a so-called "fascinated yarn".

In a known arrangement of air jet spinning machine according to US5419110, describes a device for producing spun yarn by means of an airflow, wherein a fibre guide is arranged in a nozzle block. An untwisted sliver emerging from a drafting unit is drawn into the block of nozzles toward an arrangement of a spindle and a sliver guide. In the vicinity of an inlet opening of the spindle, the drafted but untwisted sliver is exposed to an airflow acting in a circumferential direction in the area between the sliver guide and the spindle. Therefore, the fibres of the sliver are subjected to twist by the rotating airflow. Subsequently, this fibre structure is drawn through the spindle for creating a yarn, during which free fibre ends are wrapped around a conically tapered head portion of the spindle and are placed around the fibre structure as covering fibres. Yarn formation can take place with the spindle at rest, as well as when it is rotating.

In this known arrangement, the fibre sliver guide/feeding zone and nozzle block are formed as a separate assembly. Whereas the spinning unit is another separate assembly which comprises the spindle part through which the formed yarn proceeds through to a winding unit. Normally, both the assemblies are detachably connected with each other while the spinning operation takes place. This connectivity is a sliding fit which is provided by means of mechanical or magnetic locking. Under required conditions like yarn piecing or maintenance these assemblies can be separated out for ease of access to the machine operator.

In practice, the spindle part has to be lifted out from fibre feeding zone/guide arrangement for cleaning the choked fibre in the nozzle whenever the spinning process is interrupted. During this lifting, the spindle tip part gets fouled with the nozzle and breaks out. Breakage of nozzle or spindle would lead to replacement of the said components which accounts in additional cost for the consumer. Moreover, during lifting of the spindle, the sliding contact between the spinning unit and clamping surface is not much easier to remove off while moving in radial motion which makes the spinning unit to get jammed which causes discomfort to the operator while preparing for piecing.

The present disclosure is directed to overcome one or more limitations stated above or any other limitation associated with the prior art.

SUMMARY OF THE DISCLOSURE

One or more shortcomings of the conventional mechanism are overcome by the mechanism as claimed and additional advantages are provided through the assembly as described in the present disclosure.

Additional features and advantages are realized through the techniques of the present disclosure. Other embodiments and aspects of the disclosure are described in detail herein and are considered a part of the claimed disclosure

In one non-limiting embodiment of the disclosure, a mechanism for displacing a spindle of an air jet spinning machine disclosed. The mechanism includes a fixed assembly provided with a nozzle block. The nozzle block of the fixed assembly is provided with a tilting relief. Also, the mechanism includes a movable assembly. An arm is pivoted to the fixed assembly of the air jet spinning machine. Further, a carrier member is tiltably connected to and extending transversely from the arm.

In an embodiment of the disclosure, the tilting relief is defined at a region of the partial contact between the movable assembly and the fixed assembly.

In an embodiment of the present disclosure, the arm is adapted to pivotally move between a first position and a second. The carrier member is adapted to support the spindle block of the movable assembly of the air jet spinning machine.
In an embodiment of the present disclosure, the arm is operable to displace the movable assembly radially between the first position and the second position with respect to the fixed assembly.

In an embodiment of the present disclosure, a handle is coupled to a free end of the arm. The handle is actuatable to move the pivot arm between the first position and the second position.
In an embodiment of the present disclosure, the movable assembly engages with the fixed assembly in the first position and disengages from the fixed assembly in second position.

In another non-limiting embodiment of the disclosure, an air jet spinning machine comprising a mechanism is disclosed. The mechanism includes a fixed assembly provided with a nozzle block. The nozzle block of the fixed assembly is provided with a tilting relief. Also, the mechanism includes a movable assembly. An arm is pivoted to the fixed assembly of the air jet spinning machine, wherein the arm is adapted to pivotally move between a first position and a second position. Further, a carrier member is tiltably connected to and extending transversely from the arm, wherein the carrier member is adapted to support the spindle block.

In an embodiment of the present disclosure, the fixed assembly comprising the nozzle block is defined with a provision to house a nozzle device and a fiber feed guide.

In the embodiment of the disclosure, a clamping device is configured to clamp a spindle part to the spindle block.

In the embodiment of the disclosure, the fixed assembly also includes a nozzle clamping element, wherein the nozzle clamping element is configured to clamp the nozzle device to the nozzle block of the fixed assembly. Also, the nozzle clamping element is configured to clamp the fiber feed guide to the nozzle device.

In the embodiment of the disclosure, a provision is defined on an upper surface of the nozzle block of the fixed assembly to house the movable assembly, when the movable assembly is in its first position.

In the embodiment of the disclosure, the clamping device of the movable assembly forms a partial contact with the nozzle block of the fixed assembly.

In the embodiment of the disclosure, the spindle is removably connected to the carrier member of the mechanism.

It is to be understood that the aspects and embodiments of the disclosure described above may be used in any combination with each other. Several of the aspects and embodiments may be combined together to form a further embodiment of the disclosure.

The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described above, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description

BRIEF DESCRIPTION OF THE ACCOMPANYING FIGURES

The novel features and characteristics of the disclosure are set forth in the appended description. The disclosure itself, however, as well as a preferred mode of use, further objectives and advantages thereof, will best be understood by reference to the following detailed description of an illustrative embodiment when read in conjunction with the accompanying figures. One or more embodiments are now described, by way of example only, with reference to the accompanying figures wherein like reference numerals represent like elements and in which:

FIG. 1 illustrates a sectional view of an air jet spinning machine, in accordance with an embodiment of the present disclosure.

FIG. 2a illustrates a perspective view of the air jet spinning machine of FIG. 1 showing a mechanism in first position, in accordance with an embodiment of the present disclosure.

FIG. 2b illustrates a perspective view of the air jet spinning machine of FIG. 2a, wherein spindle of the mechanism is removably connected to carrier of the mechanism, in accordance with an embodiment of the present disclosure.

FIG. 2c illustrates yet another perspective of the air jet spinning machine of FIG. 2a, in accordance with an embodiment of the present disclosure.

FIG. 3 illustrates a top sectional view of the mechanism, when movable assembly is at a first position with respect of fixed assembly, depicting tilting relief.

The figures depict embodiments of the disclosure for purposes of illustration only. One skilled in the art will readily recognize from the following description that alternative embodiments of the mechanism illustrated herein may be employed without departing from the principles of the disclosure described herein.

DETAILED DESCRIPTION

The foregoing has broadly outlined the features and technical advantages of the present disclosure in order that the detailed description of the disclosure that follows may be better understood. Additional features and advantages of the disclosure will be described hereinafter which form the subject of the description of the disclosure. It should also be realized by those skilled in the art that such equivalent assemblies do not depart from the scope of the disclosure. The novel features which are believed to be characteristic of the disclosure, as to assembly, together with further objects and advantages will be better understood from the following description when considered in connection with the accompanying figures. It is to be expressly understood, however, that each of the figures is provided for the purpose of illustration and description only and is not intended as a definition of the limits of the present disclosure.

In the present disclosure, the word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

While the disclosure is susceptible to various modifications and alternative forms, specific embodiment thereof has been shown by way of example in the drawings and will be described in detail below. It should be understood, however that it is not intended to limit the disclosure to the particular forms disclosed, but on the contrary, the disclosure is to cover all modifications, equivalents, and alternative falling within the scope of the disclosure.

The terms “comprises”, “comprising”, or any other variations thereof used in the specification, are intended to cover a non-exclusive inclusion, such that an assembly that comprises a list of components or steps does not include only those components or steps but may include other components or steps not expressly listed or inherent to such setup or method. In other words, one or more elements in an assembly proceeded by “comprises… a” does not, without more constraints, preclude the existence of other elements or additional elements in the assembly.
Embodiments of the present disclosure discloses an air jet spinning machine for producing yarn from a strand of fibers. The air jet spinning machine includes a movable assembly and a fixed assembly among other components for producing yarn from a strand of fibers. The movable assembly further includes a spindle part, a spindle block and a clamping device. The fixed assembly further consists of a nozzle block, wherein the nozzle block is defined with a provision to house a nozzle device and a fiber feed guide. In an embodiment, the nozzle block of fixed assembly may also house the movable assembly, when the movable assembly is in its first position. In an embodiment, the fixed assembly also comprises of a nozzle clamping element. The air jet machine further includes a mechanism for displacing the spindle of an air jet spinning machine.

In an embodiment, the mechanism includes an arm pivoted to the fixed assembly of the air jet spinning machine. The arm may be adapted to pivotally move between a first position and a second position. In an embodiment, the arm may be operable to displace the movable assembly radially between the first position and the second position with respect to the fixed assembly. Further, the mechanism includes a carrier member which may be pivotally connected to the arm. In an embodiment, the carrier member may extend transversely from the arm and may be adapted to support the spindle of the movable assembly. The carrier member may be pivoted to the arm at a predefined distance “L” from a point of pivot of the arm. The predetermined distance “L” is defined such that an interference of the movable assembly with the fixed assembly may be avoided. In an embodiment, the spindle of the movable assembly may be removably connected to the carrier member.

In an embodiment, the arm of the mechanism comprises a handle coupled to a free end of the arm. The arm may be actuated to move from the first position to the second position with the aid of the handle. The handle may be operated either manually or may be automated with the aid of actuators.

Henceforth, the present disclosure is explained with the help of one or more figures of exemplary embodiments. However, such exemplary embodiments should not be construed as limitations of the present disclosure. The segment of textile spinning machine shown in figures is of one particular configuration, it is to be noted that slight variations in configuration of the segment of textile spinning machine are to be considered as part of the present disclosure.

FIG.1 is an exemplary embodiment of the present disclosure which illustrates a sectional view of an air jet spinning machine (1). The air jet spinning machine (1) of the present disclosure includes a movable assembly (2) and a fixed assembly (3). The movable assembly (2) further includes a spindle block (4) and a spindle part (8) and together they may be referred to as a spindle (4a). The movable assembly (2) also includes a clamping device (7). In an embodiment, the clamping device (7) may be configured to clamp the spindle part (8) to the spindle block (4). Further, the fixed assembly (3) of the machine (1) may include a nozzle block (12). A provision (21) may be defined in the nozzle block (12). In an embodiment, the provision (21) defined in the nozzle block (12) may house a nozzle device (11) and a fiber feed guide (9). Also, the fixed assembly (3) includes a nozzle clamping element (10). The nozzle clamping element (10) may be configured to clamp the nozzle device (11) to the nozzle block (12) of the fixed assembly (3). In an embodiment, the nozzle clamping element (10) may also be configured to clamp the fiber feed guide (9) to the nozzle device (11). In an embodiment, the nozzle block (11) of the fixed assembly (3) may form a base of the air jet spinning machine (1). In a further embodiment, a wall may extend vertically upward from at least one side of the base (i.e. nozzle block) of the air jet spinning machine (1).

Reference is now made to FIG. 2a to 2c in conjunction with FIG.1, which illustrates perspective views of the mechanism (100) for displacing the spindle (4a) in an air jet spinning machine (1).

Herein above and below, the air jet spinning machine (1) and machine (1) may be interchangeably used.

The mechanism (100) may aid in displacing the movable assembly (2) of the machine (1) with respect to the fixed assembly (3). In an embodiment, the mechanism (100) includes an arm (6) which may be pivotally connected to the fixed assembly (3) of the machine (1). The arm (6) may be pivoted to the fixed assembly (3) at a point of pivot (13) [best shown in FIG.2a]. Further, the arm (6) may be adapted to pivotally move between a first position (16) and a second position (17). Furthermore, the mechanism (100) includes a carrier member (5) movably connected to the arm (6) [best shown in FIG.2a]. In an embodiment, the carrier member (5) may extend transversely from the arm (6). The carrier member (5) may be adapted to support the spindle (4a) of the movable assembly (2). In an embodiment, the carrier member (5) may be pivotally connected to the arm (6) or can be securely fixed. In an embodiment, the carrier member (5) may be free to rotate about its axis. In an embodiment, the spindle (4a) may be removably connected to the carrier member (5). In an embodiment, the carrier member (5) may be U-shaped and may resemble the shape of a tuning fork. Further, the carrier member (5) may be connected to the arm (6) at a predefined distance “L” from the point of pivot (13). Also, a handle (18) may be coupled to a free end of the arm (6). The handle (18) may be actuatable to move the arm (6) from the first position (16) to the second position (17). In an embodiment, the handle (18) may be actuated manually or the process may be automated. The process may be automated by means such as but not limiting to a hydraulic actuator or a pneumatic actuator or an electric actuator. The movable assembly (2) may be engaged with the fixed assembly (3) in the first position (16) [best shown in FIG. 2a], and at the second position (17), the movable assembly (2) may be disengaged from the fixed assembly (3) [best shown in FIG. 2b].

In operation, during the piecing or maintenance activity, the movable assembly (2) may have to be moved to the second position (17) form the first position (16) i.e. the movable assembly (2) has to be disengaged from the fixed assembly (3). During such operation, the movable assembly (1) may be swiveled and moved to the second position (17) from the first position (16) either manually or by automated means. The arm (6) pivoted at a point of pivot (13) may cause the movement of the movable assembly (2) to the second position (17) from the first position (16). The movable assembly (2) may be connected to the carrier member (5) which is in turn connected to the arm (6). In an embodiment, the spindle (4a) of the movable assembly (2) may be connected removably to the carrier member (5). The U-shaped extending arms of the carrier member (5) may be accommodated in the slots between the spindle block (4) and spindle part (8) which are clamped by the clamping device (7). The spindle (4a) may be ingressed onto the carrier member (5) with the aid of slot (20) that may be defined between the spindle block (4) and the spindle part (8).

Further, as shown in FIG.1, the clamping device (7) which clamps the spindle part (8) and the spindle block (4) forms a partial contact (15) with the nozzle block (12) when in first position (16). In an embodiment, any one end of the clamping device (7) may come in contact with one of the side of the inner wall (19) of the nozzle block (12), thereby forming a partial contact (15).

In the first position (16) of the movable assembly (2), the machine (1) may be operated to produce the yarns from the strands of fibers. The strand of fibers may be fed into the nozzle device (11) through the fiber feed guide (9). The strand of fibers are further processed into a yarn in the nozzle device (11) and moved to the spindle (4a). The processed strand of fibers (yarn) may be taken out through the spindle (4a) and stored at a winding unit [not shown] for further processing. In the case of maintenance the spindle (4a) may be moved away from the nozzle block (12) for the purpose of cleaning the choked fiber from the nozzle device (11), spindle part (8) and spindle block (4). In an embodiment, the radial movement of the arm (6) may be achieved with respect to the point of pivot (13) of the arm (6).

Further, a tilting relief (14) may be defined at the region of partial contact (15) between the movable assembly (2) and the fixed assembly (3). The tilting relief (14) [best shown in FIG.3] may aid in disengaging the movable assembly (2) easily from the fixed assembly (3). Since, the tilting relief (14) may be defined on the opposite side of the partial contact (15), the movement of the spindle (4a) about the pivot point (13) may be smooth without any hindrance. Also, it can be noted that the predetermined distance “L” may be defined such that an interference of the movable assembly (2) with the fixed assembly (3) is avoided. Moreover, the distance (L) of the pivot point (13) with respect to spindle (4a) axis becomes small which provides a minimal radial movement and thus avoids the possible hitting damage between nozzle device (11) and tip of the spindle part (8). The distance “L” with respect to the spindle (4a) axis and the pivot point (13) may be achieved because of the pivotally connected carrier member (5).

The configuration of the mechanism (100) of the air jet spinning machine (1) offers easy and effortless spindle opening without causing any damage to the spindle and/or the nozzle in the machine (1). Also, the present disclosure provides a mechanism (100) to hold the spindle (4a) with compact nozzle construction, thereby achieving minimal radial movement during the spindle opening. The machine (1) of the present disclosure with the mechanism (100) provides a much reliable solution for moving the spindle (4a) without getting jammed.

It is to be noted that, all changes, modifications and variations to the mechanism within the meaning and range of equivalency are considered to be within the scope of the present disclosure.

Equivalents

With respect to the use of substantially any plural and/or singular terms herein, those having skill in the art can translate from the plural to the singular and/or from the singular to the plural as is appropriate to the context and/or application. The various singular/plural permutations may be expressly set forth herein for sake of clarity.

It will be understood by those within the art that, in general, terms used herein, and especially in the appended claims (e.g., bodies of the appended claims) are generally intended as "open" terms (e.g., the term "including" should be interpreted as "including but not limited to," the term "having" should be interpreted as "having at least," the term "includes" should be interpreted as "includes but is not limited to," etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to inventions containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an" (e.g., "a" and/or "an" should typically be interpreted to mean "at least one" or "one or more"); the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should typically be interpreted to mean at least the recited number (e.g., the bare recitation of "two recitations," without other modifiers, typically means at least two recitations, or two or more recitations). Furthermore, in those instances where a convention analogous to "at least one of A, B, and C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, and C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). In those instances where a convention analogous to "at least one of A, B, or C, etc." is used, in general such a construction is intended in the sense one having skill in the art would understand the convention (e.g., "a system having at least one of A, B, or C" would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and/or A, B, and C together, etc.). It will be further understood by those within the art that virtually any disjunctive word and/or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase "A or B" will be understood to include the possibilities of "A" or "B" or "A and B."

While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.

Referral Numerals
Referral Numerals Description
100 Mechanism
1 Air jet spinning unit
2 Movable assembly
3 Fixed assembly
4 Spindle block
5 Carrier member
6 Pivot arm
7 Clamping device
8 Spindle
9 Fiber feed guide
10 Nozzle clamping element
11 Nozzle device
12 Nozzle block
13 Pivot point
14 Tilting relief
15 Point of partial contact
16 First position
17 Second position
18 Handle
19 Inner wall
20 Slot
21 Provision
,CLAIMS:We claim:

1. A mechanism (100) for displacing a spindle (4) of an air jet spinning machine (1), the mechanism (100) comprising:
a fixed assembly (3) provided with a nozzle block (12);
a movable assembly (2);
an arm (6) pivoted to the fixed assembly (3);
a carrier member (5) tiltably connected to and extending transversely from the arm (6);
wherein said nozzle block (12) is provided with a tilting relief (14).

2. The mechanism (100) as claimed in claim 1, wherein the tilting relief (14) is defined at a region of the partial contact between the movable assembly (2) and the fixed assembly (3).

3. The mechanism (100) as claimed in claim 1, wherein the arm (6) is adapted to pivotally move between a first position (16) and a second position (17) and the carrier member (5) is adapted to support the spindle block (4) of a movable assembly (2) of the air jet spinning machine (1).

4. The mechanism as claimed in claim 1, wherein the arm (6) is operable to displace the movable assembly (2) radially between the first position (16) and the second position (17) with respect to the fixed assembly (3).

5. The mechanism (100) as claimed in claim 1 comprises a handle (18) coupled to a free end of the arm (6), wherein the handle (18) is actuatable to move the pivot arm (6) between the first position (16) and the second position (17).

6. The mechanism (100) as claimed in claim 1, wherein the movable assembly (2) engages with the fixed assembly (3) in the first position (16) and disengages from the fixed assembly in the second position (17).

7. An air jet spinning machine (1) comprising a mechanism (100), wherein the mechanism comprises:
a fixed assembly (3) provided with a nozzle block (12);
a movable assembly (2);
an arm (6) pivoted to the fixed assembly (3), wherein the arm (6) is adapted to pivotally move between a first position (16) and a second position (17);
a carrier member (5) tiltably connected to and extending transversely from the arm (6) wherein the carrier member (5) is adapted to support the spindle block (4);
wherein the nozzle block (12) is provided with a tilting relief (14).

8. The air jet spinning machine (1) as claimed in claim 7, wherein the fixed assembly (3) comprising the nozzle block (12) is defined with a provision (21) to house a nozzle device (11) and a fiber feed guide (9); and

9. The air jet spinning machine (1) as claimed in claim 7, wherein the movable assembly (2) comprises a clamping device (7) configured to clamp a spindle part (8) to the spindle block (4).

10. The air jet spinning machine (1) as claimed in claim 8, wherein the fixed assembly (3) comprises a nozzle clamping element (10), wherein the nozzle clamping element (10) is configured to clamp the nozzle device (11) to the nozzle block (12) of the fixed assembly (3).

11. The air jet spinning machine (1) as claimed in claim 10, wherein the nozzle clamping element (10) is configured to clamp the fiber feed guide (9) to the nozzle device (11).

12. The air jet spinning machine (1) as claimed in claim 10, wherein a provision is defined on an upper surface of the nozzle block (12) of the fixed assembly (3) to house the movable assembly (1), when the movable assembly (2) is in the first position (16).

13. The air jet spinning machine (1) as claimed in claim 9, wherein the clamping device (7) of the movable assembly (2) forms a partial contact with the nozzle block (12) of the fixed assembly (3).

14. The air jet spinning machine (1) as claimed in claim 8, wherein the spindle block (4) is removably connected to the carrier member (5) of the mechanism (100).