Covering yarn device

Abstract

The invention relates to the technical field of textile machinery, in particular to a covering yarn device. The upstream side of a core yarn sending-out device of an original core yarn supply unit is provided with a loose feeding device for tension feeding and core yarn loosening, the structural length of a covering yarn supply device needs to be increased, and a control system is complex. A core yarn covering device comprises a core yarn frame structure and a core yarn supply device N of a core yarn supply unit Q. The core yarn supply unit Q comprises a base, a tension controller and a sending-out device, the tension controller can rotate relative to the base to achieve the tension state or the non-tension state of core yarn, and the length of the core yarn is preset when core yarn supply is stopped. When the core yarn is supplied, the tension controller is rotated, and the core yarn with the preset length is sent out through the sending-out device; the tension state or the non-tension state of the core yarn can be achieved through the same structure, the structure is reasonable, control is easy, and the automation degree is high.

Description

Technical Field

[0001] The invention relates to the technical field of textile machinery, and more particularly to a core-spun yarn device. Background Art

[0002] As a previous core yarn supplying device, we know a unit including a core yarn delivering device that delivers the yarn end of the core yarn to the stretching device, a tension giving device that gives tension to the core yarn supplied to the stretching device, and a relaxation giving device that gives relaxation to the core yarn between the core yarn delivering device and the tension giving device, as well as a control device (for example, 201510278804.2).

[0003] The core yarn supply device as described above can surely deliver the yarn end of the core yarn to the main unit composed of the drafting device, etc. at the start of spinning. Since the core yarn supply unit has a tension giving device and a slack giving device for the core yarn slack on the upstream side of the core yarn delivery device, the core yarn supply device needs to be longer in structure, the structure is complicated, and the control system becomes complicated. Summary of the invention

[0004] The purpose of the present invention is to provide a core-spun yarn device with reasonable structure and convenient control in view of the deficiencies of the prior art.

[0005] A core yarn device, comprising a core yarn frame structure and a core yarn supply device N, wherein the core yarn supply device N comprises a core yarn supply unit Q; the core yarn supply unit Q comprises a base for core yarn supply, a tension controller and a delivery device, wherein the tension controller can be rotated relative to the base of the core yarn supply unit Q to achieve a tension state or a non-tension state of the core yarn, and when the core yarn supply is stopped, the core yarn length is preset, and when the core yarn is supplied, the tension controller is rotated to deliver the core yarn of the preset core yarn length through the delivery device; The delivery device is provided with a clamp and a yarn cutter, which can realize switching between clamping and non-clamping, and between cutting and non-cutting during the spinning process.

[0006] The tension state or the non-tension state of the core yarn can be realized by adopting the same structure, the structure setting is convenient and reasonable, the control is simple, and the degree of automation is high.

[0007] As a further improvement and supplement to the above solution, the present invention also includes the following additional technical features: The tension controller is realized by swinging back and forth when the upper and lower sides of the swing cylinder are supplied with air; the tension controller is provided with a movable damping and a fixed damping for tension application, and the zero tension cylinder controls the opening and closing of the movable damping relative to the fixed damping, so that the tension controller switches between the tension application state and the non-tension application state. The structure is reasonable, the efficiency is high, and the conversion is convenient.

[0008] The tension controller alternately hangs the core yarn on the fixed damper and the movable damper, so that the core yarn is bent multiple times and tension is given to the core yarn; when the movable damper is closed relative to the fixed damper, the core yarn becomes approximately straight and is in a non-tension-giving state. The tension control is reasonable, and the core yarn is smoothly supplied to the drafting device under no tension or very low tension, which can meet the requirements of non-raw material core yarn spinning and is more convenient to operate.

[0009] A yarn-breaking sensor is provided on the downstream side of the tension controller in the supply direction to detect the presence or absence of the core yarn, thereby ensuring the normal operation of the core yarn.

[0010] The delivery device also includes a core yarn suction port and a lead-out port. Air is sprayed from the air duct M to generate negative pressure at the suction port. The core yarn is delivered to the drafting device through the lead-out port to be delivered or cut off. The cutter clamps and cuts the core yarn through the cylinder. The structure is reasonable and the delivery is smooth and reliable.

[0011] A yarn blocking plate for guiding the core yarn is arranged on the upstream side of the yarn break sensor, which limits the core yarn and ensures smooth entry of the core yarn.

[0012] The fixed damper is provided with a plurality of shafts spaced at a predetermined interval along the supply direction of the core yarn; and the movable damper is provided with a plurality of rings of the fixing plate. The structure is reasonable and the tension setting is more stable and reliable.

[0013] The tension controller also includes a middle adjustment disk, an inlet porcelain ring and an outlet porcelain ring on both sides, and the core yarn enters from the inlet porcelain ring and exits from the outlet porcelain ring.

[0014] The core yarn frame structure comprises a core yarn frame and a core yarn tube, wherein the core yarn frame is arranged at a horizontal position of the center line of the core yarn tube and the core yarn tube is maintained in a state of extending in the front-rear direction, so that the core yarn is transported stably and reliably.

[0015] The following beneficial effects can be achieved by using the present invention: The present invention provides a core yarn supply device and core yarn supply that can realize and simplify the conveyance of a yarn end of a core yarn, and a core yarn supply device and a spinning device having such a core yarn supply unit.

[0016] In the present invention, the core yarn is switched between a tension state and a non-tension state, and the same structure is used for switching. The structure is convenient and reasonable, the control is simple, and the automation degree is high.

[0017] By changing the internal structure, the core yarn length is preset when the core yarn starts to prepare for spinning and when the yarn is interrupted during the spinning process. Then, when the core yarn is supplied, it can be smoothly supplied to the drafting device under no tension or very low tension, which can meet the requirements of spinning core yarn without raw materials and is more convenient to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the spinning machine in the present invention.

[0019] Figure 2 It is a schematic structural diagram of a single spinning unit 5 in the present invention.

[0020] Figure 3A It is a schematic structural diagram of the normal spinning state in the present invention.

[0021] Figure 3B It is a structural schematic diagram of the tension imparting state when the device is stopped in the present invention.

[0022] Figure 3C It is a schematic diagram of the structure of the present invention in a non-tension-applying state when stopped.

[0023] Figure 4A It is a schematic diagram of the structure of the movable damper 44c and the fixed damper 44d in the non-tensioning state of the present invention.

[0024] Figure 4B It is a schematic diagram of the structure of the movable damper 44c and the fixed damper 44d in the tension-applying state in the present invention.

[0025] Figure 5A It is a schematic diagram of the structure of the yarn feeding device in the normal spinning state in the present invention.

[0026] Figure 5B It is a structural schematic diagram of the yarn feeding device when the core yarn is cut and clamped in the present invention. DETAILED DESCRIPTION

[0027] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0028] like Figure 1-5B As shown, the present invention is a core-spun yarn device.

[0029] "Upstream" and "downstream" mean upstream and downstream in the direction in which the yarn travels during spinning.

[0030] The core-spun yarn device described in this embodiment is as follows: Figure 2 shown.

[0031] A core yarn device, comprising a core yarn frame structure and a core yarn supply device N, Next, the core yarn supply device N is described in detail. The core yarn supply device N is installed between the two spinning units 5 and can be attached to and detached from the spinning units 5. Figure 2As shown, the core yarn supply device N includes a core yarn frame structure and a core yarn supply unit Q. The core yarn supply unit Q includes a base 41 for supplying core yarn, a tension controller 44 and a delivery device 46. The tension controller 44 can be rotated relative to the base 41 of the core yarn supply unit Q to display the tension state or non-tension state of the core yarn 43. When the supply of the core yarn 43 is stopped, the length of the core yarn 43 is preset. When the core yarn 43 is supplied, the tension controller 44 is rotated to deliver the core yarn 43 of the preset core yarn length through the delivery device 46.

[0032] like Figure 3A As shown, the core yarn supply unit Q includes a base 41, a tension controller 44, a yarn break sensor 45 and a delivery device 46 (exit portion). In the following description, on the running path of the core yarn 43 in the core yarn supply unit Q, the side of the core yarn tube 52 is called the upstream side, and the side of the delivery device 46 is called the downstream side.

[0033] The base 41 supports a tension controller 44, a yarn break sensor 45, and a delivery device 46 (exit portion) arranged in the following order from the upstream side of the supply direction of the core yarn 43. The core yarn supply unit Q has the functions of applying tension to the supplied core yarn 43, giving a preset length to the core yarn 43, and delivering the core yarn 43 (the yarn end of the core yarn 43).

[0034] The delivery device 46 is provided with a clamp 46a and a yarn cutter 46c, which can realize switching between clamping and non-clamping, and between cutting and non-cutting during the spinning process.

[0035] Furthermore, the tension controller 44 is rotated by swinging back and forth when the swing cylinder 48 supplies air to the upper and lower sides; the tension controller 44 applies tension to the core yarn 43 at the downstream side of the core yarn guide ring 54 in the supply direction of the core yarn 43. Figure 4A As shown, the tension controller 44 is provided with a tension-applying movable damper 44c and a fixed damper 44d. The movable damper 44c is controlled to open and close relative to the fixed damper 44d by the zero tension cylinder 42, so that the tension controller 44 is switched between a tension-applying state and a non-tension-applying state.

[0036] like Figure 4A and Figure 4B As shown, the zero tension cylinder 42 makes the movable damper 44c contact and separate. More specifically, the zero tension cylinder 42 is arranged on one side of the movable damper 44c, and moves to the upper side (the direction in which the movable damper 44c and the fixed damper 44d are closed) when air is supplied to the lower side of the zero tension cylinder 42. When air is supplied to the upper side of the zero tension cylinder 42, it moves away from the movable damper 44c and moves to the lower side (the direction in which the movable damper 44c is opened relative to the fixed damper 44d). The tension controller 44 switches between the tension-giving state and the non-tension-giving state by the action of the zero tension cylinder 42.

[0037] The tension controller 44 is swung by supplying air to the upper and lower sides of the swing cylinder 48. Figure 3A and Figure 3B As shown, more specifically, the swing cylinder 48 is arranged on one side of the tension controller 44, and when the lower side of the swing cylinder 48 is supplied with air, it moves to the upper side (the tension controller 44 swings upward). Figure 3B When the upper side of the swing cylinder 48 is supplied with air, it moves to the lower side (the tension controller 44 swings downward) as shown. Figure 3A As shown, return to the normal walking path.

[0038] The tension controller 44 is based on the travel path of the core yarn 43 ( Figure 3A ) moves to a position away from the travel path of the core yarn 43 ( Figure 3B ), the core yarn 43 is hung on the edge of the outlet porcelain ring 44b and lifted to the upper side. When the outlet porcelain ring 44b leaves the position of the core yarn 43's running path, the core yarn is given a state of preset length. When the outlet porcelain ring 44b is located on the running path of the core yarn 43, it is called the normal spinning state. Figure 3C As shown, in the non-tension state, the core yarn 43 has two structural modes: rear end loose yarn 43a and front end feeding yarn 43b.

[0039] Furthermore, the tension controller 44 is alternately hung on the fixed damping 44d and the movable damping 44c through the core yarn 43, as shown in FIG. Figure 4B As shown, the core yarn 43 is bent multiple times to give the core yarn 43 tension; when the movable damping 44c is closed relative to the fixed damping 44d, as shown Figure 4A As shown, the core yarn 43 is in a substantially straight line shape and is in a non-tensioned state.

[0040] The fixed damper 44d is fixed to the base 41. The movable damper 44c is supported by a support shaft (not shown) provided on the fixed damper 44d, and can be opened and closed relative to the fixed damper 44d.

[0041] Furthermore, a yarn break sensor 45 is provided on the downstream side of the tension controller 44 in the supply direction, for detecting the presence or absence of the core yarn 43 .

[0042] Further, the core yarn delivery device 46 is arranged at a position on the downstream side of the yarn break sensor 45 in the supply direction of the core yarn 43, such as Figure 5A and 5BThe delivery device 46 also includes a core yarn suction port 46b and a lead-out port 46e. Air is sprayed from the air duct M to generate negative pressure at the mouth of the suction port 46b, and the core yarn 43 is delivered to the drafting device 27 through the lead-out port 46e to be in the core yarn delivery state or the cutting state; the cutter 46c clamps and cuts the core yarn 43 through the cylinder 46d. The core yarn suction port 46b is a yarn lead-in head 47 that guides the core yarn 43 from the core yarn supply unit Q to the drafting device 27.

[0043] When the air of the cylinder 46d is supplied to the upper side, the running area relative to the core yarn 43 moves to the clamping position and cuts the core yarn 43. When the air of the cylinder 46d is supplied to the lower side, the running area relative to the core yarn 43 moves to the clamping release, and the core yarn is sent out.

[0044] The cutter 46c cuts the core yarn 43 at the downstream side of the clamp 46a in the supply direction of the core yarn 43. The cutter 46c is operated in conjunction with the clamp 46a by the cylinder 46d. The cutter 46c cuts the core yarn 43 when the clamp 46a is switched from the non-clamping state to the clamping state.

[0045] Furthermore, a yarn blocking plate 49 for guiding the core yarn 43 is provided on the upstream side of the yarn break sensor 45 , and is provided on the most upstream side of the base 41 .

[0046] Furthermore, the fixed damper 44d is provided with a plurality of shafts spaced at predetermined intervals along the supply direction of the core yarn 43; and the movable damper 44c is provided with a plurality of circular rings of the fixing plate.

[0047] As a more specific structure, a plurality of shafts are provided on the fixed damper 44d, and are spaced at predetermined intervals along the supply direction of the core yarn 43. A plurality of rings of fixed plates are provided on the movable damper 44c. Figure 4A In the state shown, the core yarn 43 and the shafts are located alternately in the supply direction of the core yarn 43. Holes are formed in the multiple circles of each fixing piece for the core yarn 43 to pass through. The core yarn 43 is alternately hung on each shaft and each hole.

[0048] Furthermore, the tension controller 44 also includes a middle adjustment disk 44e, an inlet ceramic ring 44a and an outlet ceramic ring 44b on both sides, and the core yarn 43 enters from the inlet ceramic ring 44a and exits from the outlet ceramic ring 44b.

[0049] Furthermore, the core yarn holder 53 holds the core yarn tube 52 in a horizontal position at the center line of the core yarn tube 52 and in a state extending in the front-rear direction. In this embodiment, filament or multifilament yarn is used as the core yarn 43. The core yarn supply unit Q guides the core yarn 43.

[0050] The core yarn supply unit Q also has air supply solenoid valves to control the zero tension cylinder 42, the swing cylinder 48, the cylinder 46d, and the suction port 46b. The operation of each solenoid valve is controlled by a control panel (omitted in the figure). In the invention, two air supply pipes are used, and different pressures can be adjusted.

[0051] The spinning machine of the present embodiment includes a head 1, a spinning middle section 2, a tail 3 and a joint trolley 4. The spinning middle section 2 is composed of a plurality of spinning units 5. Each spinning unit 5 is provided with a core yarn supply device N, a drafting device 27, a spinning device 11, an output roller 16, a yarn storage device 32 and a winding device 28 in sequence from upstream to downstream. The winding device 28 includes a bobbin 15, a winding roller 21 and a traverse guide head 14 on the upper side. The traverse guide head 14 is used to traverse the yarn 25 and wind it onto the bobbin 15 to form a bobbin 51. The bobbin 51 is always in contact with the winding roller 21, and no impact is generated. The winding tension of the bobbin 51 is stable.

[0052] like Figure 2 As shown, the drafting device 27 is arranged near the upstream of the frame 30, and the fiber bundle 29 sent from the drafting device 27 is spun by the spinning device 11. The spun yarn 25 generated by the spinning device 11 is transported by the delivery roller 16 and then wound on the bobbin 15 by the winding device 28 to form a packaged bobbin 51. In this embodiment, an air type structure is adopted in which compressed air is ejected from an air spinning nozzle to generate a whirling airflow in the spinning chamber, and the whirling airflow is used to apply twist to the fiber bundle to generate the yarn 25.

[0053] The drafting device 27 comprises a rear roller pair 7, a third roller pair 8, an intermediate roller pair 9 with aprons 50 mounted on the rollers, and a front roller pair 10. The four roller pairs convert the fibers of the sliver 6 into fine fiber bundles 29.

[0054] The output roller 16 includes a delivery roller 16b supported on a frame frame 30 and a contact arrangement with the output roller 16a. The spun yarn 25 delivered from the spinning device 27 is clamped between the output roller 16a and the delivery roller 16b. The output roller 16 is driven to rotate by an electric motor (not shown) to deliver the yarn 25 to the yarn storage device 32. The yarn 25 is unwound through the yarn storage device 32 and delivered to the winding device 28.

[0055] A yarn storage device 32 is provided downstream of the output roller 16. The yarn storage device 32 comprises a yarn storage roller 19, a flyer 32a, a yarn storage sensor 32b and a driving motor 32c. The driving motor 32c rotates to drive the yarn storage roller 19 to rotate. A waste yarn suction port 12 is provided on the outer side of the yarn storage roller 19 for adsorbing waste yarn. The flyer 32a can form a relative friction with the spinning yarn 25 during spinning, and can guide the spinning yarn 25 to the outer peripheral surface of the yarn storage roller 19 for storage. The flyer 32a can keep the spinning yarn 25 at a certain tension and continuously deliver the yarn 25 to the winding device 28. The yarn storage sensor 32b is used to detect the yarn storage state.

[0056] On the front side of the frame 30, between the output roller 16 and the yarn storage device 32, a spinning electric cleaner 17 and a tension sensor 18 are provided to monitor the thickness of the running yarn 25 and the yarn tension change value. The spun yarn 25 generated by the spinning device 27 passes through the spinning electric cleaner 17 and the tension sensor 18 before being wound by the yarn storage device 32. When a defect is detected in the spun yarn 25 or the yarn tension change value is less than a set value, a yarn defect detection signal is sent to a unit controller which is a computer for controlling the spinning unit. The unit controller sends a signal to cut off the spun yarn 25 when a yarn defect is detected.

[0057] The splicing trolley 4 can move on the guide rail 31, and includes a splicer 22, a small suction nozzle 23, a splicing electric cleaner 24 and a large suction nozzle 26. The small suction nozzle 23 captures the yarn 25 from the spinning device 27 and guides it to the splicer 22, and the large suction nozzle 26 captures the yarn 25 from the winding device 28 and guides it to the splicer 22. The splicer 22 performs splicing between the guided yarns 25.

[0058] A yarn break sensor 20 is provided on the upper side of the winding device 28 for detecting the presence or absence of the yarn 25 .

[0059] The working principle is described in detail below: When the first electromagnetic valve is opened, the tension controller 44 is switched to a non-tensioning state, the clamp 46a is switched to a clamping state, and the wire cutter 46c is switched to a wire cutting state. When the first electromagnetic valve is closed, the tension controller 44 is switched to a tensioning state, the clamp 46a is switched to a non-clamping state, and the wire cutter 46c is switched to a non-wire cutting state.

[0060] When the second electromagnetic valve is opened, the tension controller 44 is rotated and switched to the state of preset core yarn length, and the tension controller 44 is switched to the tension giving state. When the second electromagnetic valve is closed, the tension controller 44 is rotated and switched to the state of normal core yarn travel path channel.

[0061] Specifically, when the first solenoid valve is opened, first the clamp 46a is switched to a clamping state, and the wire cutter 46c is switched to a wire cutting state. Next, when the second solenoid valve is opened, the tension controller 44 is rotated and switched to a state where the core yarn is preset to a certain length, and at the same time the tension controller 44 is switched to a tension giving state. When the first solenoid valve is closed, first the clamp 46a is switched to a non-clamping state, and the wire cutter 46c is switched to a non-wire cutting state, and then, when the second solenoid valve is closed, the tension controller 44 is rotated and switched to a core normal travel path channel state, and at the same time the tension controller 44 is switched to a tension giving state. Such a structure is achieved, for example, by setting a difference in the size (volume and / or length) of each pipe connected to each cylinder respectively.

[0062] The above are preferred embodiments of the present invention, which do not limit the protection scope of the present invention. Any modifications and improvements made by those skilled in the art based on the design ideas of the present invention should be regarded as within the protection scope of the present invention.

Claims

1. A core-spun yarn device, comprising a core yarn frame structure and a core yarn supply device N, characterized in that: The core yarn supply device N comprises a core yarn supply unit Q, the core yarn supply unit Q comprises a base (41) for supplying a core yarn (43), a tension controller (44) and a delivery device (46), the tension controller (44) being rotatable relative to the base (41) of the core yarn supply unit Q to achieve a tension state or a non-tension state of the core yarn (43), and when the supply of the core yarn (43) is stopped, the length of the core yarn (43) is preset, and when the core yarn (43) is supplied, the tension controller (44) is rotated to deliver the core yarn (43) of the preset core yarn length through the delivery device (46); The delivery device (46) is provided with a clamp (46a) and a yarn cutter (46c), which can realize switching between clamping and non-clamping, and between yarn cutting and non-yarn cutting during the spinning process.

2. The core-spun yarn device according to claim 1, characterized in that: The tension controller (44) is rotated by swinging back and forth when air is supplied from the upper and lower sides of the swing cylinder (48); the tension controller (44) is provided with a movable damper (44c) and a fixed damper (44d) for applying tension, and the opening and closing of the movable damper (44c) relative to the fixed damper (44d) are controlled by the zero tension cylinder (42), so that the tension controller (44) switches between a tension applying state and a non-tension applying state.

3. The core-spun yarn device according to claim 2, characterized in that: The tension controller (44) alternately hangs the core yarn (43) on the fixed damper (44d) and the movable damper (44c), so that the core yarn (43) is bent multiple times, thereby imparting tension to the core yarn (43); when the movable damper (44c) is closed relative to the fixed damper (44d), the core yarn (43) becomes approximately straight and is in a non-tension-applying state.

4. The core-spun yarn device according to claim 1, characterized in that: A yarn break sensor (45) is provided on the downstream side of the tension controller (44) in the supply direction, for detecting the presence or absence of the core yarn (43).

5. The core-spun yarn device according to claim 1, characterized in that: The delivery device (46) further comprises a core yarn suction port (46b) and a lead-out port (46e), wherein air is sprayed from an air duct M to generate negative pressure at the mouth of the suction port (46b), and the core yarn (43) is delivered to the drafting device (27) through the lead-out port (46e) to be in a core yarn delivery state or a cutting state; the cutter (46c) clamps and cuts the core yarn (43) through the action of the cylinder (46d).

6. The core-spun yarn device according to claim 4, characterized in that: A yarn blocking plate (49) for guiding the core yarn (43) is provided on the upstream side of the yarn break sensor (45).

7. The core-spun yarn device according to claim 2, characterized in that: The fixed damper (44d) is provided with a plurality of shafts spaced at predetermined intervals along the supply direction of the core yarn (43); and the movable damper (44c) is provided with a plurality of circular rings of fixed plates.

8. The core-spun yarn device according to claim 1, characterized in that: The tension controller (44) further comprises a middle adjustment disk (44e), an inlet ceramic ring (44a) and an outlet ceramic ring (44b) on both sides, and the core yarn (43) enters from the inlet ceramic ring (44a) and exits from the outlet ceramic ring (44b).

9. The core-spun yarn device according to claim 1, characterized in that: The core yarn frame structure comprises a core yarn frame (53) and a core yarn tube (52), wherein the core yarn frame (53) is arranged at a horizontal position of the center line of the core yarn tube (52) and holds the core yarn tube (52) in a state of extending in the front-rear direction.

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