CN217263956U

CN217263956U - Auxiliary device for assisting in replacing bobbin

Info

Publication number: CN217263956U
Application number: CN202220881803.2U
Authority: CN
Inventors: 胡欢庆; 宋传军
Original assignee: Oerlikon Textile GmbH and Co KG
Current assignee: Oerlikon Textile GmbH and Co KG
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-08-23
Anticipated expiration: 2032-04-15
Also published as: EP4261168A1

Abstract

The utility model discloses an auxiliary device for supplementary bobbin is changed, including shutdown mechanism, suction mechanism and negative pressure generator, wherein, suction mechanism is set up with rotatable mode under the drive of driver, and suction mechanism has the suction tube that is used for gaseous passing through, the suction tube have vertical portion and with vertical portion is the horizontal portion of certain contained angle, the driver is the inner rotor type, vertical portion is arranged on the inner rotor of driver. In this technical scheme, need not utilize gear drive to realize the rotation of vertical portion. The vertical portion is directly mounted on the rotor, moving in rotation with the rotor. At the same time, the vertical portion of the suction tube can still be used to suck the yarn ends produced during doffing by means of a negative pressure air flow.

Description

Auxiliary device for assisting in replacing bobbin

Technical Field

The utility model relates to an auxiliary device, in particular to an auxiliary device for assisting bobbin is changed.

Background

The applicant describes a similar auxiliary device for assisting the replacement of a bobbin in the published patent document CN 108861865B. From the technical point of view, the prior art auxiliary device has the same function as the auxiliary device in the patent, namely, the full-package bobbin and the continuously supplied yarn are cut off, and the yarn is hung on the empty bobbin after the full-package bobbin is changed into the empty bobbin.

The structure disclosed in patent document CN108861865B is referred to as a "front suction nozzle structure" because the suction nozzle is located in front of the rubbing roller (here, the suction nozzle is located on the side of the rubbing roller close to the operation space). The rotatable auxiliary device is moved back and forth between two positions to effect the aforementioned cutting and hanging of the yarn. In order to realize the rotation of the auxiliary device, a gear is arranged on the vertical section of the suction pipe and meshed with a gear of an output shaft of the stepping motor.

It is further known from the above prior art disclosure that the auxiliary device is placed close to the winding device and in a one-to-one correspondence with the winding device. As the number of winding devices increases, the space occupied by each winding device per unit area decreases. As a result, higher demands are also placed on the internal structure of the auxiliary device.

SUMMERY OF THE UTILITY MODEL

In order to improve the structure of prior art to optimize auxiliary device's structure, the utility model provides a carry out the auxiliary device who improves on prior art basis for assisting the bobbin to change.

According to a first aspect, an auxiliary device for assisting bobbin replacement comprises a cutting mechanism for cutting yarn, a suction mechanism for sucking the cut yarn, and a vacuum generator for generating a suction effect, wherein the suction mechanism is rotatably provided under the drive of a drive, and has a suction tube for the passage of gas, the suction tube having a vertical portion and a transverse portion at an angle to the vertical portion, the drive being of the inner rotor type, the vertical portion being arranged on the inner rotor of the drive.

In the prior art listed above, the rotation of the vertical part is achieved by means of a gear transmission, the suction tube being arranged spaced apart from the drive rotation axis. In this technical scheme, need not utilize gear drive to realize the rotation of vertical portion. The vertical portion is directly mounted on the rotor, moving in rotation with the rotor. At the same time, the vertical portion of the suction tube can still be used to suck the yarn ends produced during doffing by means of a negative pressure air flow.

According to a second solution, the vertical portion is coaxial with the driver rotor.

The coaxial arrangement ensures that the rotor is rotated through an angle equal to the angle of rotation of the auxiliary device. The driver can be precisely controlled on the premise that the rotation angle is preset.

According to a third solution, the vertical portion is arranged inside a hollow tube of the driver rotor.

The hollow tube is mounted between the vertical portion and the driver rotor, facilitating the disassembly of the suction tube with the vertical portion. Particularly, during maintenance, the vertical part is only required to be detached from the hollow pipe.

Further, according to a fourth aspect, the suction mechanism performs a rotational motion with the vertical portion as a rotational axis.

In order to further optimize the internal structure of the auxiliary device, according to a fifth solution, the negative pressure generator is located below the drive.

Further, according to a sixth technical aspect, the negative pressure generator includes a compressed air inlet, a compressed air duct, and a negative pressure duct.

For rational arrangement, according to a seventh solution, the compressed air duct is arranged transversely to the negative pressure duct.

According to an eighth technical solution, the vertical portion of the suction pipe passes through the driver, and a part of the vertical portion is inserted into an upper end portion of the negative pressure conduit.

According to a ninth aspect, a distance of a space between the portion of the vertical portion inserted into the negative pressure duct and the negative pressure duct is gradually reduced along the air flow direction.

As the separation distance decreases, the high-pressure and high-speed compressed air has a higher flow velocity when passing through the region, promoting a vacuum effect at the lower end of the vertical portion.

Drawings

FIG. 1 is a top view of a winding device;

fig. 2 is a sectional view of the auxiliary device.

Detailed Description

Fig. 1 is a plan view of a winding device. The winding device comprises a yarn inlet side 5, an auxiliary device 1, a reciprocating yarn guide 4, a friction roller, not shown, and a cradle 2. The yarn inlet side 5 is the side of the yarn 6 entering the winding device. The cradle 2 is provided at one end with a pair of chucks 3 which can grip a convolute duct 7, while the other end has an axis of rotation 2.1. The cradle 2 is rotatable about the axis of rotation 2.1 so that the gripped winding tube 7 can be moved against or away from a friction roller, not shown. The reciprocating thread guide 4 has a thread guide 4.1, a guide belt 4.2 and a drive motor, not shown. The drive motor, not shown, drives the guide belt 4.2 and moves the guide belt 4.2 in alternating directions by alternating the direction of rotation thereof. The thread guide 4.1 is fixed to the guide belt 4.2, so that the thread guide 4.1 can be moved with the guide belt 4.2 in alternating directions, i.e. axially back and forth along the winding tube 7. The contact between the friction roller directly driven by a not-shown driving source and the take-up tube 7 causes the take-up tube 7 to rotate by virtue of the contact friction. The thread guide 4.1 is located on the upstream side of the friction roller, and the auxiliary device 1 is located on the upstream side of the thread guide 4.1. The thread guide 4.1 and the auxiliary device 1 are both located on one side, i.e. the downstream side, of the friction roller. In the normal winding process, the yarn 6 passes through the yarn inlet side 5, passes through the yarn guide 4.1, is guided by the yarn guide 4.1 to reciprocate along the axial direction of the winding pipe 7, enters the contact part of the winding pipe 7 and the friction roller, and is finally wound on the winding pipe 7 to form a winding drum 10. The movement path of the thread 6 under the restriction of the thread guide 4.1 is a triangular region 6.1.

As further shown in fig. 1, the auxiliary device 1 includes a suction mechanism 14, a guide mechanism 15, a cutting mechanism 13, and a driver 21. The suction mechanism 14 is configured as a suction pipe 11. To achieve the suction of the yarn, the suction tube 11 has a transverse portion 8 and a vertical portion 9. One end of the vertical portion 9 is connected to a source of negative pressure, not shown, and one end of the transverse portion 8 is an open end 22 for sucking the yarn. When the negative pressure source is in communication with the suction tube 11, the open end 22 of the suction tube 11 creates a suction effect. The yarn 6 can be held under tension at the open end 22 by being sucked by the open end 22 when the yarn end of the yarn 6 after being cut is located near the open end 22. The guide means 15 comprise a catch element. The catching member can cooperate with the open end 22 of the suction tube 11 to hold the yarn 6 sucked by the open end 22, by which the held yarn is delivered to the area near the chuck 3 at an angle that can be easily caught by the hook members of the chuck 3. For cutting the yarn 6, the cutting mechanism 13 comprises a cutting element. The cutting element is preferably a knife with a blade. The blade is positioned to face the yarn during shredding, i.e., the blade is oriented in a direction substantially coincident with the direction of opening of the open end 22.

Fig. 2 is a structural sectional view of the auxiliary device. The suction duct 11 is of curved "L" shape, consisting of the transverse portion 8 and the vertical portion 9. The open end 22 is arranged at the end of the transverse portion 8. The horizontal portion 8 is rotatable reciprocally in the direction of the arrow in fig. 1, with the vertical portion 9 as the rotation axis. The lower end 17 of the vertical portion 9 is inserted in the negative pressure generator. The vacuum generator generates a vacuum in the suction tube 11 by means of the vacuum generation principle, so that the yarn end can be sucked into the suction tube 11.

The negative pressure generator comprises a compressed air inlet 23 connected to a compressed air source, not shown, a compressed air conduit 24, and a negative pressure conduit 19. The compressed air inlet 23 communicates with the compressed air line 24, the compressed air line 24 being arranged transversely to the vacuum line 19. The negative pressure conduit 19 leads to a waste wire box, for example, where waste wire can be collected. A narrow space 18 is formed between the lower end 17 of the vertical part 9 and the inner wall of the negative pressure pipeline 19. The compressed air enters the narrow space 18 and then down into the negative pressure conduit 19, whereby a vacuum effect is created at the lower end 17. In particular, the distance separating the outer surface of the lower end portion 17 from the inner surface of the negative pressure duct 19 decreases gradually in the air flow direction, in this embodiment indicated by the reference 20, downwards along the negative pressure duct 19.

A driver 21, which is an inner rotor type motor, is disposed above the negative pressure generator. The vertical portion 9 of the suction duct 11 is arranged through the actuator 21. In particular, the vertical portion 9 is fixedly arranged on the rotor 12 of the driver 21. The central axis of the rotor 12 coincides with the axis of rotation of the vertical part 9, so that the rotation of the driver 21 directly produces the rotation of the vertical part 9, i.e. the rotation of the auxiliary device as a whole.

Further, a hollow pipe 16 is arranged on the rotor 12, and the hollow pipe 16 covers the outer side of the vertical part 9. The rotor 12 is fixedly connected with the hollow pipe 16, and the hollow pipe 16 is detachably connected with the vertical part 9.

From the perspective of structural complexity, compare in prior art through installing the gear on the driver rotation axis, its gear cooperates with the gear engagement of vertical portion in order to realize the transmission, and auxiliary device's inner structure is simplified in this patent.

Claims

1. An auxiliary device for assisting the replacement of a bobbin, comprising a cutting mechanism for cutting off a yarn, a suction mechanism for sucking the cut yarn and a vacuum generator for generating a suction effect, wherein the suction mechanism is rotatably arranged under the drive of a drive and has a suction tube for the passage of gas, which has a vertical part and a transverse part at an angle to the vertical part,

it is characterized in that the preparation method is characterized in that,

the driver is of an inner rotor type and,

the vertical portion is disposed on an inner rotor of the driver.

2. An auxiliary device for assisting in changing a bobbin according to claim 1,

it is characterized in that the preparation method is characterized in that,

the vertical portion is coaxial with a rotor of the driver.

3. An auxiliary device for assisting in changing a bobbin according to claim 1,

it is characterized in that the preparation method is characterized in that,

the vertical portion is arranged inside a hollow tube of a rotor of the driver.

4. An auxiliary device for assisting the replacement of a bobbin according to claim 1,

it is characterized in that the preparation method is characterized in that,

the suction mechanism performs a rotational motion with the vertical portion as a rotation axis.

5. An auxiliary device for assisting the replacement of a bobbin according to claim 2 or 3 or 4,

it is characterized in that the preparation method is characterized in that,

the negative pressure generator is located below the driver.

6. An auxiliary device for assisting in changing a cartridge according to claim 5,

it is characterized in that the preparation method is characterized in that,

the negative pressure generator includes a compressed air inlet, a compressed air conduit, and a negative pressure conduit.

7. An auxiliary device for assisting in changing a cartridge according to claim 6,

it is characterized in that the preparation method is characterized in that,

the compressed air duct is arranged transversely to the negative pressure duct.

8. An auxiliary device for assisting in changing a bobbin according to claim 7,

it is characterized in that the preparation method is characterized in that,

the vertical portion of the suction pipe passes through the driver, and a part of the vertical portion is inserted into an upper end portion of the negative pressure conduit.

9. An auxiliary device for assisting in changing a bobbin according to claim 8,

it is characterized in that the preparation method is characterized in that,

the vertical portion is inserted into the negative pressure pipe, and the vertical portion is spaced from the negative pressure pipe by a distance gradually decreasing in an air flow direction.