JPH053268U - Roll unwinding device for package cage - Google Patents

Abstract

(57) [Summary] [Purpose] When unwinding the package roll, prevent the yarn from being damaged. [Structure] An air pipe 14 for supplying compressed air to give a suction force is connected to a suction pipe 3 for sucking and unwinding a bar winding 1 provided on a package P, and the air pipe 1
4, the speed control valve 32 is switchably connected so as to give a strong and weak suction force.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a bar unwinding device for a package.

[0002]

[Prior Art]

 In the spinning winding process, a continuously spun yarn is first bunch-wound around one end of a bobbin, then main winding is performed within a certain traverse range to form a package, and the yarn is further wound on one side of the outer periphery of the package. The end is wound by a specified length to make a product.

[0003] Since this winding is a waste thread, when the package is used, or when the thread end of the main winding of the package is previously tied to the outer circumference of the package to form a product, the winding is removed. There is a need for this, and a rod unwinding device (Japanese Patent Laid-Open No. 63-230481) for that purpose has been proposed.

The rod unwinding device will be described with reference to FIGS. 4 to 6 (a) and (b). 4 (a) and 4 (b), the outer circumference of the package P is wound with a bar 1 and the winding yarn end 2 is attached to the outer circumference of the package P in a free state. The suction pipe 3 for sucking the rod winding 1 has a suction port 4 at the tip thereof, is provided so as to be movable back and forth along the axial direction of the outer periphery of the package P, and the package P on the side where the rod winding is applied. It is rotatably attached to the center of the end face. The suction pipe 3 is located at the position of the winding 1, and after sucking and catching the yarn end 2 on the outer periphery of the package P, it moves to the position of FIG. 5 (b) and the suction port 4 at the tip is shown in FIG. When it is positioned at the axis of the package P as shown in FIG. 3, the yarn of the winding rod 1 is suction-unwound while forming the balloon 5. When this bar winding 1 is unwound and unwound to the main winding yarn of the package P, the rising base portion 5a of the balloon 5 moves along the winding locus, as shown in FIGS. 6 (a) and 6 (b). It is captured by the balloon sensor guide 6.

After the unwinding of the rod, the yarn captured by the balloon sensor guide 6 is captured by the balloon with the yarn hooking guide as proposed in Japanese Patent Application No. 62-52162 (Invention title: yarn tying device). Then, the thread is guided to the building device and knotted.

In this rod winding and unwinding device, the yarn sucked into the suction pipe 3 is accommodated in the yarn waste box through the suction line, and is sucked into the suction pipe 3 during the yarn knotting operation described above. A part of the thread that has been pulled out is pulled out and a thread knot is made.

[0007]

[Problems to be solved by the device]

 By the way, in this unwinding device, there is a problem that the yarn is damaged when the suction force of the suction pipe 3 is increased.

[0008] Therefore, an object of the present invention is to provide a package unwinding device that does not damage the yarn when unrolling the package.

[0009]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the present invention connects an air pipe that supplies compressed air to give suction force to a suction pipe that sucks and unwinds a roll wound on the package, and the suction force is applied to the air pipe. The feature is that the speed control valve is connected to be switchable to give strength.

[0010]

[Action]

 According to the above structure, the speed control valve is provided on the air pipe so as to be switchable, and the suction force of the suction pipe can be made strong by changing the air flow rate, and the yarn can be damaged by changing the strength for each yarn treatment. It is possible to inhale without giving.

[0011]

【Example】

 Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 10 denotes a device for unwinding and winding knots on the one side of the outer periphery of the package P, and for connecting a suction pipe 3 to a frame 11 of the device, A suction line 13 is provided for sucking and unwinding the yarn end 2 of the rod winding 1 from P and guiding the unwound yarn to the yarn waste box 12.

In the package P, the end of the paper tube B on the side opposite to the winding 1 is inserted into a peg tray T and rotatably supported. The thread end 2 of the winding rod 1 hangs down on the outer periphery of the package P.

The suction pipe 3 upstream of the suction line 13 is provided so as to be reciprocally movable along the axial direction of the outer circumference of the package P, and is located on the center side of the package end surface on the side where the bar winding 1 is applied. It is rotatably provided and sucks and unwinds the thread of the winding rod 1 while balloon 5 is provided. A suction port 4 is formed at the tip of the suction pipe 3 so as to face the thread end 2 of the rod winding 1 on the outer periphery of the package P. A nozzle 15 for ejecting the compressed air supplied from the air pipe 14 to the downstream side is provided in the suction pipe 3 at a position downstream of the suction port 4, and the flow of the compressed air causes the nozzle 15 to eject the yarn waste box from the suction port 4. It is configured to generate suction toward 12.

An expansion pipe 16 for allowing the reciprocating movement of the suction pipe 3 along the axial direction of the package P is connected to the base end portion of the suction pipe 3 at a right angle. The expansion pipe 16 is composed of an inner pipe 16a directly connected to the suction pipe 3 and an outer pipe 16b into which the inner pipe 16a is slidably inserted, and the outer pipe 16b is fixed to the frame 11.

A boss 17 that rotatably supports the inner pipe 16 a is provided at the base end of the inner pipe 16 a. A rod 18 a of a cylinder 18 that axially drives the boss 17 is connected to the boss 17 via a connecting plate 19. It is connected. A sleeve 16 is fitted between the boss 17 and the outer pipe 16b on the outer periphery of the inner pipe 16a to allow the inner pipe 16a to move in the axial direction and to restrain rotation. A motor (which may be a rotary solenoid) 21 is connected to the sleeve 20 by means of a belt or the like as a means for rotating the suction pipe 3 so as to be freely supported from the fixed side.

The outer tube 16b of the expandable tube 16 and the thread waste box 3 are connected by a connecting tube 22, and the outlet end of the connecting tube 22 forming a part of the suction line 13 is connected to the package P by the suction line 3. A cutter 23 that cuts the yarn that has been released from the suction is provided.

As shown in FIG. 2, the air line 25 from the compressor 24 is connected with a filter 26, a regulator 27, a check valve 28 and a four-way switching valve 29, and the four-way switching valve 29 has a first outlet. The port 30 is directly connected to the air pipe 14, and the second outlet port 31 is connected to the air pipe 14 via a parallel circuit 34 of a speed control valve 32 and a check valve 33.

Further, as shown in FIG. 1, the frame 11 is provided with a base 35 that is movable in the axial direction of the package P. The base 35 of the base 35 is fitted into the paper tube B of the package P to support the package P. A rotating chuck device 36 is provided, and a building device 37 for tying yarn after unwinding the rod is provided, and a yarn hooking guide 38 for guiding the yarn after unwinding the rod is provided to the building device 37. It is provided so that the outer periphery of the package P can be rotated.

Next, the operation of the embodiment will be described. First, when the package P is conveyed, the suction pipe 3 is reciprocally moved to the left in FIG. 1 by the cylinder 18. At the time of movement, the suction port 4 of the suction pipe 3 is in a state of being close to the outer periphery of the package P, and sucks the yarn end 2 of the rod winding 1 of the package P.

The suction pipe 3 sucks the yarn end 2 of the rod winding 1 and moves to the position indicated by the chain double-dashed line in FIG. 1, and is rotated by the motor 18 so that the suction port 4 is located at the center of the package P. As a result, the yarn of the rod winding 1 is released from the end of the package P while forming the balloon 5 in the axial direction, and the unwound yarn passes from the suction pipe 3 through the suction line 13 to the yarn waste box 12 Be guided inside.

Then, when the thread of the bar winding 1 is used up, the balloon 5 is formed by the thread of the main winding as shown in FIGS. 5 to 6, and the balloon sensor guide placed near the outer periphery of the package P. 6 (Fig. 6), the completion of the unwinding of the rod will be detected.

After the balloon sensor guide 6 captures the yarn, the cutter 23 is operated to separate the yarn in the lint box 12 from the yarn in the suction line 13. By cutting the yarn in this way, the tension of the yarn pulled out from the suction pipe 3 during the yarn knotting by the building device 37 and the yarn hooking guide 38 becomes constant, and the yarn knotting operation becomes easy.

In the present invention, as shown in the timing chart of FIG. 3, when unwinding the rod, the four-way switching valve 29 is switched and compressed air from the air line 25 is speed-controlled via the outlet port 31. The air is supplied to the air pipe 14 through the valve 32, and when the balloon is unwound, the suction force of the suction pipe 3 is weakened so as not to damage the yarn. When the yarn is cut, the cutter 23 closes the suction line 13 with its cutter blade. Therefore, the on-off valve 28 is turned off so that the air does not flow to the suction line 13, and in the early stage of the knotting operation, the suction force in the suction pipe 3 should be strong so that the compressed air from the air line 25 is switched in four directions. The air pipe 14 is supplied directly from the outlet port 30 of the valve 29, and the suction force is reduced at the end of the knotting operation. Switch to make it come out.

As described above, in the yarn processing state, the air flow rate of the air pipe 14 is switched and the suction force of the suction pipe 3 is switched, so that the yarn is not damaged.

[0026]

[Effect of the device]

 In summary, according to the present invention, the speed control valve is provided on the air pipe so as to be switchable, and the suction force of the suction pipe can be changed by changing the air flow rate, and the strength can be changed for each yarn treatment. It is possible to suck without damaging the thread.

[Brief description of drawings]

FIG. 1 is an overall view showing an embodiment of a rolling and unwinding device for a package according to the present invention.

FIG. 2 is a view showing an air circuit for supplying compressed air for suction to a suction pipe in the present invention.

FIG. 3 is a diagram showing a timing chart in the present invention.

FIG. 4 is a diagram showing an initial state of unwinding the rod.

FIG. 5 is a diagram showing a state in which the rod winding is unwound.

FIG. 6 is a view showing a state in which the unwinding of the rod is completed.

[Explanation of symbols]

 1 Bar winding 2 Thread end 3 Suction pipe 14 Air pipe 32 Speed control valve P package

Claims (1)

[Claims for utility model registration] [Claim 1] A suction pipe for sucking and unwinding a coil wound on a package is connected to an air pipe for supplying compressed air to give suction force, and the suction force is applied to the air pipe. A bar winding and unwinding device for a package, characterized in that a speed control valve is switchably connected to give strength.