JPH0632451U - Bobbin holder for spin winder - Google Patents

Abstract

(57) [Summary] [Object] To provide a bobbin holder for a take-up winder, in which when the bobbin is removed from the bobbin holder, the chuck piece of the bobbin holder is reliably separated from the inner surface of the paper tube, and the bobbin can be smoothly removed. [Structure] A plurality of chuck pieces 10 are arranged on the outer circumference of a bobbin mounting shaft 1A and are movably held in a radial direction, and the chuck pieces 10 are biased in a radial direction to chuck a bobbin. A bobbin holder of a take-up winder is provided with a connecting member 27 that connects the chuck pieces 10 and urges them in a diameter reducing direction, so that when the bobbin is removed from the bobbin holder, the chuck piece of the bobbin holder is removed from the inner surface of the paper tube. The bobbin can be reliably removed and smoothly removed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bobbin holder for supporting a paper tube for winding a yarn on a bobbin mounting shaft in a take-up winder.

[0002]

[Prior art]

 Various types of bobbin holders have conventionally been used as the bobbin holder of the take-up winder.One of them is to provide an operating ring that is slidable in the axial direction on the outer circumference of the bobbin mounting shaft that is driven to rotate from the outside. There is a bobbin holder in which an outer peripheral surface of the operating ring is provided with an inclined surface, and a plurality of chuck pieces, which have the same inclined surface and are in close contact with the inclined surface, are provided on the circumference thereof to form a bobbin holder. In this bobbin holder, the chuck ring is moved back and forth in the axial direction by reciprocating the operating ring to press or release the chuck piece to the inner peripheral surface of the paper tube fitted to the outer periphery thereof, thereby bobbin the paper tube. The mounting shaft is gripped or released.

[0003]

[Problems to be solved by the device]

 In the above-mentioned conventional bobbin holder, the force for axially pressing the operating ring for pressing the chuck piece in the radial direction is given by the spring, and in order to firmly grip the bobbin by increasing the winding speed, The spring force should be stronger. As a result of firmly gripping the bobbin in this way, the chuck piece bites into the inner surface of the paper tube and a recess is formed in the inner peripheral surface of the paper tube.When removing the paper tube, the pressing force in the axial direction against the chuck piece is increased. Except for the above, even if the chuck piece releases the force that presses against the inner surface of the paper core, the lower chuck piece may not be able to return as it remains in the recess on the inner surface of the paper core, thus preventing the paper tube from coming off. Sometimes it was not possible to smoothly attach and detach the tube to the bobbin holder.

Accordingly, the present invention provides a bobbin holder for a take-up winder, which enables the chuck piece of the bobbin holder to be reliably separated from the inner surface of the paper core when the bobbin is removed from the bobbin holder, so that the bobbin can be smoothly removed. To aim.

[0005]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention has a plurality of chuck pieces arranged in the circumferential direction on the outer circumference of a bobbin mounting shaft and movably held in the radial direction, and urges the chuck pieces in the radial direction. In the bobbin holder of the take-up winder that chucks the bobbin, a connecting member that connects the chuck pieces and urges the bobbin in the diameter reducing direction is provided so that when the bobbin is removed from the bobbin holder. The chuck piece of (1) is securely separated from the inner surface of the paper core so that the bobbin can be smoothly removed.

[0006]

[Action]

 Since the present invention is configured as described above, in order to remove the bobbin from the bobbin holder, the chuck pieces can be connected by connecting the chuck pieces by releasing the urging force in the radial direction from the plurality of chuck pieces. The members forcibly move inward in the radial direction, the outer peripheral surface of each chuck piece separates from the inner peripheral surface of the paper tube, and the free bobbin is removed.

[0007]

【Example】

 Embodiments of the present invention will be described with reference to the drawings. A bobbin mounting shaft 1 is composed of a rotary cylinder 2 which is rotationally driven from the outside, and a plurality of piece holders 3 which are provided on the outer periphery of the rotary cylinder 2 along the axial direction. The space 4 of the piece holder 3 is provided with an operating ring 5 and an operating spring 6 that presses the operating ring 5 in the axial direction.

The operating ring 5 has an inclined outer peripheral surface 7 on its outer periphery, and a chuck piece 10 having an inclined inner peripheral surface 8 corresponding to the inclined outer peripheral surface 7 is provided on the outer periphery of the inclined outer peripheral surface 7. A plurality of them are provided on the top at equal intervals. The outer peripheral surface of the chuck piece 10 is provided with an outer peripheral holding surface 12 corresponding to the inner peripheral surface 11 of the paper tube K to be fitted therein, and the outer peripheral holding surface 12 has a mesh-shaped uneven surface for preventing slippage. Is forming. As shown in FIG. 2, the holder piece 2 is formed with a hole 15 into which each chuck piece 10 is fitted. Each chuck piece 8 is movable in the radial direction by the guide surface 16 of the hole 15. Flanges 13 and 14 are formed on both sides of the chuck piece 10 to prevent the chuck piece 10 from protruding.

A key groove 17 is provided on the inner peripheral surface of the holder piece 2 in the axial direction, and a key groove 18 is provided over the entire length on the outer peripheral surface of the rotary cylinder 1 that opposes the key groove 17, and further the key ring 17 of the operating ring 4 is provided. A key groove 20 is provided on the inner peripheral surface at a position facing the key groove 18, and keys 21 are arranged in a row in the axial direction in each key groove. A piston 22 is fixed to the end of the arranged keys, and the piston 22 is slidably provided in a cylinder 23. When high pressure air is supplied from the high pressure air supply / discharge port 24 into the cylinder 23, the piston 22 A cylinder 22 is movable in the cylinder 23 in the direction A in FIG. A pressing portion 25 is provided at the end of each key 21, and the end surface 26 of the operating ring 4 contacts the pressing portion 25. As described above, the operation of the piston 22 causes the keys 21 to move in the direction B in FIG. When it is moved to, the actuating ring 4 moves in the direction B of FIG. 1 against the spring 5 by the pressing portion 25 of each key, and moves away from the chuck piece 8.

A through hole 26 is provided in the chuck piece 10, and an annular spring 27 made of a piano wire whose diameter is reduced in a free state as shown in FIG. 3B is provided in the through hole 26. As shown in (), the chuck pieces 10 are pierced while expanding and thereby urged each chuck piece 10 to move inward in the radial direction.

When inserting the bobbin into the bobbin holder, when high pressure air is supplied to the working chamber 28 from the high pressure air supply / discharge port 24, the piston 22 moves in the direction A of FIG. 1 while pressing the key 21. Then, the key 21 moves the actuation ring 5 against the spring 6 in the direction A of FIG. Since the operating ring 5 moves in the direction away from the chuck piece 10, each chuck piece 10 moves in the diameter reducing direction by the annular spring 27 penetrating the inside thereof. In this state, the bobbin K is fitted into the bobbin holder.

Next, when the high-pressure air in the working chamber 28 is discharged from the high-pressure air supply / discharge port 24, the working ring 5 is moved by the spring 6 in the direction B in FIG. 1 while pressing the key 21 and the piston 22. Due to the movement, the inclined outer peripheral surface 7 presses the inclined inner peripheral surface 8 of the chuck piece 10, and the chuck piece 10 is prevented from moving in the axial direction by the guide surface 16, and therefore acts on the inclined inner peripheral surface 8. It moves in the radial direction by the component force of the pressing force. At this time, each chuck piece 10 moves outward while expanding against the diameter reduction force of the annular spring 27 penetrating through the inside thereof, and the outer peripheral surface thereof becomes the inner peripheral surface of the paper tube K. Pressure contact. Due to this pressure contact force, the paper tube K is gripped by the bobbin holder, and the bobbin mounting shaft 1 is driven to rotate to wind the yarn around the bobbin.

When removing the fully wound bobbin from the bobbin holder, if high-pressure air is supplied to the working chamber 28 again, the piston 22, the key 21 and the working ring 5 resist the spring 6 in the same manner as described above. Move in the direction A of FIG. 1 and separate from the chuck piece 10. As a result, as shown in FIG. 4, the chuck piece 10 moves in the diameter reducing direction by the annular ring 27. As a result of each chuck piece 10 moving in the diameter reducing direction in this way, it is urged toward the actuation ring 5, and under the bobbin mounting shaft 1 between the paper tube and the piece holder 3 due to the weight of the full bobbin. There is a gap. Even if the chuck piece 10 presses the inner surface of the paper tube with the strong force of the spring 6 to form a concave portion and enters the concave portion, the chuck piece 10 comes out of the concave portion when the bobbin is pulled out. It is possible to prevent the recess and the chuck piece 10 from remaining engaged, and the bobbin can be smoothly removed. In this way, after removing the full bobbin, the empty bobbin is inserted and the same operation is repeated.

[0014]

[Effect of device]

 Since the present invention is configured and operates as described above, when the bobbin is pulled out from the bobbin holder, the chuck piece of the bobbin holder may bite into the inner circumference of the paper tube and hold it by the annular spring. The bobbin can be smoothly removed from the bobbin holder because it can be retracted in the inner diameter direction and the chuck piece is not caught on the paper tube.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view showing a state of gripping a bobbin according to an embodiment of the present invention.

FIG. 2 is a partial plan view of the piece holder according to the embodiment of the present invention.

FIG. 3 (a) is a cross-sectional view showing a state when the bobbin of the embodiment of the present invention is removed, and FIG. 3 (b) is a front view of a spring.

FIG. 4 is a vertical cross-sectional view showing a bobbin removed state according to the embodiment of the present invention.

[Explanation of symbols]

 1 bobbin mounting shaft 2 rotating cylinder 3 piece holder 4 void 5 operating ring 6 spring 7 inclined outer peripheral surface 8 inclined inner peripheral surface 10 chuck piece 11 inner peripheral surface 12 outer peripheral holding surface 13 flange 14 flange 15 hole 16 guide surface 17 key groove 18 Key Groove 19 Recess 20 Key Groove 21 Key 22 Piston 23 Cylinder 24 High Pressure Air Supply / Discharge Port 25 Pressing Part 26 End Face 27 Annular Spring 28 Working Chamber

Claims (1)

[Scope of utility model registration request] 1. A bobbin mounting shaft is provided with a plurality of chuck pieces arranged circumferentially and movably held in a radial direction, and the chuck pieces are urged in a radial direction to chuck the bobbin. A bobbin holder for a take-up winder, wherein a bobbin holder for the take-up winder is provided with a connecting member for connecting the chuck pieces and urging the chuck pieces in a diameter reducing direction.