JP2911593B2 - Equipment for threading through openings in textile machinery - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a docking body provided with an axially penetrating notch for receiving a yarn and a hole connectable to a pressure source.
A device for moving the docking body in a direction transverse to the axial direction of the notch.

[Conventional technology]

For example, in the air jet type spinning machine disclosed in German Patent No. 3336294, in order to thread the yarn in the stretch mechanism range at the time of yarn breakage or bobbin exchange,
The yarn or auxiliary yarn to be ligated must pass through the swirl nozzle from the bobbin in a backward direction (ie in a direction opposite to the normal running direction of the yarn). The threading operation is performed by an automatic operating device that operates all the rows of the spinning unit. Furthermore, this German Patent No. 333629
According to the specification, it has been proposed that an intake pipe is applied to the end of the spiral nozzle on the inlet side, whereby the yarn end is sucked into the spiral nozzle. Of course, a swirl nozzle having a simple structure without a horizontal slit is sufficient. However, the operation of passing the yarn by the spiral nozzle has a drawback that the drawer roller pair of the stretching mechanism must be greatly widened so that the operator can easily approach the inlet side of the spiral nozzle.

According to DE-OS 35 41 218, a swirl nozzle of complicated construction with a transverse slit is additionally provided with a rearwardly directed nozzle opening for sucking the yarn to be spliced. It has been proposed to provide The provision of such additional nozzles, however, increases the length of the swirl nozzle, which can be a hindrance during the spinning operation, which adversely affects the quality of the spun yarn.

Furthermore, according to JP-A-62-46666, a device of the type described at the outset is known. In this known device, a two-piece docking body is provided with a slightly conical hole for receiving the thread to be ligated, and a large inclination with respect to the axis in the conical hole. And another hole that opens into the hole. When compressed air is blown into the inclined holes, the yarn is sucked into the conical holes and carried further. When the yarn is passed through the hole, the docking body is divided so as to be kept away from the spliced yarn. However, this known device does not allow a reliable threading operation. In particular, a relatively narrow and long stepped axial through-hole does not allow reliable threading.

[Problem of the Invention]

It is an object of the present invention to improve a device of the type mentioned at the outset so that the thread can be reliably passed through a relatively narrow opening that is complex.

[Means for solving the problem]

According to the present invention that solves this problem, the docking body is configured as a pin, and the pin body tapers toward one axial end for centering the pin in the opening. The notch is configured as a groove that opens on one side in the radial direction, and the hole is disposed substantially parallel to the axis of the pin, and opens at the tapered end surface of the docking body. There is additionally provided a device for moving the docking pair parallel to its axis.

[Action and effect]

ADVANTAGE OF THE INVENTION According to the structure of this invention, a docking body is centered relatively accurately with respect to an opening, without making the positioning possibility of the apparatus (for example, an automatic operation device) which supports a docking body (pin) overly demanding. be able to. When the docking body is centered in the opening, the radially opening hole is closed, so that the docking body can be made in one piece, thus simplifying its structure and operation. Moreover, by being centered in this way, the arrangement of the compressed air holes can be made parallel to the axis. As a result, the air flow carrying the yarn hardly swirls. Thus, the yarn can be reliably passed through a narrow opening, particularly a complicatedly constructed spiral nozzle.

〔Example〕

Next, the configuration of the present invention will be specifically described with reference to the embodiment shown in the drawings.

1 to 3 show a swirl nozzle 1 of a spinning machine and a device 2 according to the invention. This device 2 is attached to an automatic operation device. Since the automatic operating device operates all the rows of the spinning units, it can travel along the rows of the spinning units. The part of the automatic operating device is schematically indicated by a console 3 on which the device 2 is mounted.

The spiral nozzle 1 is formed with a stepped through-hole 5 in the axial direction. In this hole 5 tangential holes 7 open in two radial planes, inclined and eccentric with respect to the axis 6 of the swirl nozzle 1. This tangential hole 7 creates two rotating air flows in the hole 5 during operation, these two air flows adding false twist to the yarn. The bore 5 has a conical extension 8 at its upper axial end.

The device 2 has two arms 10, 11 pivotally mounted on a console 3 and one support 12 hinged to the free ends of these arms 10, 11. The console 3, the arms 10, 11 and the support 12 form a square link, which is a pneumatic cylinder.
By means of 13, the swivel is moved from the basic position shown in FIG. 1 to the working position shown in FIG. A casing 14 that opens downward is fixed to the support 12. Another support 15 is movable along the guide rail 16 in the casing 14. The support 15 is another pneumatic cylinder
17 allows it to be moved between the raised basic position shown in FIG. 1 and the lowered working position shown in FIG. An electric motor 20 having a drive shaft 21 is attached to the support 15. A gear 22 is fixed to the drive shaft 21. An approach switch 23 is provided adjacent to the ring gear of the gear 22, and an outlet of the approach switch 23 is connected to a gear (not shown) via a conductor 24. A first roller 25 is mounted on the free end of the drive shaft 21, and a second roller 26, which is rotatably supported, is applied to the first roller 25.
These rollers 25 and 26 are rounded and tapered at the end opposite to the electric motor 20. Two rollers 25,26
A docking member 30 comprising an arm 31 protruding from the support 15 and a pin 32 (docking body) protruding downward from the arm 31 is fixed to the support 15 below.
The pin 32 has a conical outer surface 33 that tapers downward.
have. The cone angle of this conical outer peripheral surface 33 is the same as the opening angle of the conical extension 8. The pin 32 has a groove 34 with parallel side walls that penetrates axially and opens radially. The center plane of the groove 34 is
A pin 32, which coincides with the mutually contacting contact lines of these rollers 25, 26 in a common tangential plane 5 and 26 (see FIG. 3) and overlaps the axis 6 in the working position (see FIG. 2). But eccentric but arranged parallel to the axis 35 of The pin 32 has a hole 36 next to the groove 34, and the hole 36 opens in the lower end face 37 of the pin 32. The hole 36 communicates with a lateral hole 38 of a larger diameter, which itself is connected to a source of compressed air via a valve, not shown. The hole 36 is slightly inclined with respect to the pin 35 so as to be directed toward the center of the narrowest part of the hole 5 of the swirl nozzle 1 in the working position of the device 2. At the common tangential plane of contact of the rollers 25, 26, the casing 14 has a slit 39 which extends to a depth substantially at the bottom of the groove 34.

During operation, the illustrated device operates as follows. If a yarn break is found in one spinning unit, the automatic operating device is moved to the spinning unit. The device 2 is in the basic position shown in FIG. The automatic operating device lifts the bobbin from the drive roller and locates the yarn end by means of a suction nozzle (see, for example, DE-A 33 36 294). Tangential hole 7 of spiral nozzle 1
The air supply to is interrupted. The suction pipe 45 of the automatic operation device catches the separated yarn end by a suction nozzle. A sufficient length of thread 46 is unreeled from the bobbin and stored in the intake pipe 45. The intake pipe 45 passes the yarn 46 through the yarn path above the swirl nozzle 1. The intake pipe 45 brings the yarn to be spliced to the lower side of the lifted pull-out roller, and then in the slit 39 of the casing 14, in the groove 34 of the pin 32, and in the fastening line of the pair of rollers 25 and 26. Guide to At this time, the yarn 46 is tensioned just before the opening 47 of the intake and storage tube 48. When the electric motor 20 is turned on, the pair of rollers 25 and 26 rotate in the opposite direction, and the yarn 46 is pulled out from the intake pipe 45. At this time, the yarn 46 is drawn into the groove 34. The yarn 46 drawn from the intake pipe 45 is stored in a loop in the intake and storage pipe 48. The electric motor 20
The thread is rotated by the exact number of revolutions calculated by the approach switch 23 and the counter connected thereto, then stopped, and the thread end is cut directly below the end face 37.

The support 12 is positioned by the cylinder 13 via the swirl nozzle 1. Casing 14 with slit
Prevents the yarn end from being directed in the groove 34 of the pin 32 to the intake opening located behind the swirl nozzle 1. Since the casing 14 is applied to the stopper 49 of the spinning unit, the pin 32 is accurately positioned with respect to the axis 6 in the first direction. Next, the support 15 is lowered by the cylinder 17. At this time, the pin 32 is guided into the extension 8,
Thereby, it is accurately positioned with respect to the axis 6 in the second direction. For this purpose, it is advantageous if the arm 31 is pivotable about an axis parallel to the axis 35 of the pin 32 and is fixed to the casing 14 while being centered by a spring. Compressed air for hole 36 and electric motor 20
Is switched on. The rollers 25, 26 guide the yarn 46 back from the intake and storage roller 48 through the swirl nozzle 1. The strength of the air flow is such that no stagnation is formed at the narrowest point of the swirl nozzle 1 and the yarn 46 is reliably conveyed through the swirl nozzle 1 and thus the yarn is not caught by the suction flow of the swirl nozzle 1 Must be selected.

Meanwhile, the intake pipe 45 is positioned at the inlet end of the spiral nozzle 1 on the feed roller pair 50 of the drawing mechanism (not shown) of the spinning unit. The yarn end is a spiral nozzle 1
Immediately after exiting from the inlet end of the, it is drawn into the intake pipe 45. When the remaining amount of the yarn stored in the suction and storage pipe 48 is low, the support 15 is guided back by the cylinder 17 to the basic position shown in FIG. During this movement, the yarn 46 is guided obliquely and is pulled out of the tightening gap of the pair of rotating rollers 25 and 26. However, the non-driven roller 26 is driven by an additional pneumatic cylinder.
It is configured to be able to be lifted from.

Next, the intake pipe 45 is shifted sideways, and the feed roller pair
Positioned below 50. Thus, the moving operation device for the yarn joining operation occupies the ready state. Since the yarn of a predetermined length accurately defined is stored in the intake pipe 45, the yarn to be connected and the fiber sliver newly supplied from the drawing mechanism overlap each other by a predetermined amount during the yarn joining operation. Fit.

Although the device 2 has already been described in connection with the operation of passing the yarn through the swirl nozzle 1, the device 2 can be generally used for passing a yarn through an opening in a textile machine.
The advantages of the arrangement according to the invention are particularly advantageous when the shape of the opening is relatively small and narrow.

[Brief description of the drawings]

1 is a schematic cross-sectional view of the device according to the invention in a basic position, FIG. 2 is a schematic cross-sectional view of the device according to FIG. 1 in a working position, FIG. FIG. 4 is a schematic sectional view taken along the line III, and FIG. 4 is a schematic sectional view taken along the line IV-IV in FIG. 1 ... spiral nozzle, 2 ... device, 3 ... console,
5 ... hole, 6 ... axis, 7 ... tangential hole, 8 ... conical expansion, 10, 11 ... arm, 12 ... support, 13 ...
... pneumatic cylinder, 14 ... casing, 15 ... support, 16
…… Guide rail, 17… Pneumatic cylinder, 20 …… Electric motor, 21 …… Driving shaft, 22 …… Gear, 23 …… Approach switch, 24 …… Conductor, 25,26 …… Roller, 30 …… Docking member 31, 31 Arm 32 Outer peripheral surface 34 Groove 35
…… Axis line, 36 …… Hole, 38 …… Horizontal hole, 39 …… Slit, 45
... intake pipe, 46 ... thread, 47 ... opening, 48 ... intake and storage pipe, 49 ... stopper, 50 ... draw-out roller pair

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) D01H 15/00 B65H 54/22

Claims (9)

(57) [Claims] 1. A docking body for receiving a thread (46) having a notch penetrating in the axial direction and a hole (36) connectable to a pressure source, and the docking body is provided with respect to the axial direction of the notch. A device for passing a thread through an opening in a textile machine, the device comprising a device for lateral movement, wherein the docking body is configured as a pin (32);
Has an outer peripheral surface (33) tapering toward one axial end for centering the pin (32) in the opening (5), and the notch is formed on one side in the radial direction. The hole (36) is arranged substantially parallel to the axis of the pin (32);
It is open at the tapering end surface (37) of the pin (32) and is additionally provided with devices (15, 17) for moving the pin (32) parallel to its axis (35). A device for passing a thread through an opening of a textile machine. 2. The two rollers (25, 2) abutting each other on the side of the pin (32) facing the tapered end surface (37).
6. The device according to claim 1, wherein 6) is provided and one of the two rollers is connected to a motor (20). 3. The tangential plane containing the contact line of the two rollers (25, 26) overlaps the central plane of the groove (34).
The described device. 4. The device according to claim 2, wherein a measuring member for measuring a rotation angle is connected to one of the rollers. 5. Apparatus according to claim 4, wherein said measuring element comprises a stepped angle signal transmitter and a digital counter. 6. One roller (26) is connected to the other roller (25).
6. The device according to any one of claims 2 to 5, wherein the device can be lifted from. 7. A casing (14), which opens toward the tapered side of the docking body, is arranged around the docking body configured as a pin (32), and the casing (14) is formed in the groove ( 7. The device according to claim 1, comprising a slit (39) corresponding to (34). 8. Apparatus according to claim 2, wherein the casing (14) extends over the rollers (25, 26). 9. A stopper (49) is provided adjacent to the opening (5) of the textile machine, against which the casing (14) abuts in the working position of the device (2). 9. The device according to claim 7 or claim 8.