Automatic lifting device

Abstract

The utility model discloses an automatic lifting device, which is used in the technical field of lifting a spool of a two-for-one twister and is characterized by comprising a mounting plate, a driving motor mounted on the mounting plate, a swing arm in linkage connection with the driving motor, the swing arm is of a long-strip-shaped structure, the middle of the swing arm is a mounting end, two ends of the swing arm are free ends, and the mounting end and the free ends are connected with the mounting plate. The bobbin creel lifting device has the advantages that the bobbin creel lifting device is simple in structure and convenient to mount, two groups of bobbins can be lifted by the aid of the swing arm, extra cylinders or driving parts are omitted, and broken yarns can be quickly detected and lifted.

Description

Technical Field

[0001] The utility model relates to an automatic lifting device, which is used in the technical field of lifting yarn bobbins of a doubling twisting machine. Background Art

[0002] In the existing doubling twisting machine, when the yarn winding is completed or yarn breakage occurs, the yarn bobbin needs to be lifted to prevent the empty friction between the winding yarn bobbin and the winding roller, so as to avoid damaging the yarn on the surface of the winding yarn bobbin. The lifting of the existing yarn bobbin is generally processed manually, and some manufacturers have developed automatic lifting devices to lift the winding yarn bobbin.

[0003] For example, CN110422696A discloses a motor-driven yarn bobbin lifting device, which includes a cradle and a cradle rotating shaft. The rear plate of the cradle is supported and installed by the cradle rotating shaft, and the cradle can swing around the cradle rotating shaft. The cradle rotating shaft is supported and installed by the machine frame through a shaft hole. The characteristics are as follows: the yarn bobbin lifting device further includes a lifting pull rod member, a swing arm member, a motor, a transmission mechanism and a support; the support is installed on the machine frame and is located above the cradle, the swing arm member is hinged to the support, the top end of the lifting pull rod member is hinged to one end of the swing arm member, and there is a distance between the first hinge point of the swing arm member and the support and the second hinge point of the lifting pull rod member and the swing arm member. The bottom end of the lifting pull rod member is hinged to the side plate of the cradle, and the transmission mechanism is respectively connected to the motor and the swing arm member. The motor drives the swing arm member to swing through the transmission mechanism.

[0004] A single-spindle lifting structure of a chemical fiber doubling twisting machine disclosed in CN211394752U is provided on each spindle of the chemical fiber doubling twisting machine. The single-spindle lifting structure of the chemical fiber doubling twisting machine includes a first connecting rod, a second connecting rod, an eccentric wheel and an eccentric wheel driving mechanism. The eccentric wheel is driven to rotate by the eccentric wheel driving mechanism, and the eccentric wheel driving mechanism is installed through a bracket. One end of the first connecting rod is movably connected to the bracket, and one side outer edge of the eccentric wheel abuts against the middle part of the first connecting rod. The other end of the first connecting rod is connected to one end of the second connecting rod, and the other end of the second connecting rod is connected to the corresponding bobbin holder on each spindle.

[0005] The main problems existing in the above yarn breakage treatment device are as follows: 1. It can only perform yarn breakage treatment (lifting) on a single spindle (single yarn bobbin); 2. The transmission mechanism is relatively complex. Summary of the Utility Model

[0006] Aiming at the above existing problems, the utility model aims to provide an automatic lifting device with a simple structure and capable of lifting two groups of yarn bobbins.

[0007] The technical solution adopted by the utility model is as follows:

[0008] An automatic lifting device, characterized in that: it includes a mounting plate, a driving motor is mounted on the mounting plate, a swing arm is linked to the driving motor, the swing arm is a long strip structure, the middle of the swing arm is the mounting end, and the two ends of the swing arm are free ends. The two free ends of the swing arm are respectively arranged below the movable arm of the creel, and are used to lift the movable arm of the creel.

[0009] Further settings are as follows:

[0010] A direct connection method is adopted between the swing arm and the driving motor, that is, a mounting hole is provided in the middle of the swing arm, and the swing arm is sleeved on the motor shaft of the driving motor through the mounting hole.

[0011] When the swing arm is in the horizontal position, neither of the two free ends of the swing arm contacts the movable arm of the creel.

[0012] When the swing arm swings in one direction, one free end of the swing arm approaches the movable arm of the creel at its one end until it contacts the movable arm of the creel. At this time, the other free end of the swing arm moves away from the movable arm of the creel at its one end.

[0013] The swing arm is linked to the driving motor. After the swing arm contacts the movable arm of the creel, the movable arm of the creel moves together with the swing arm, so that the winding yarn bobbin is separated from the winding roller.

[0014] An origin sensing screw and an origin sensor are also provided above the swing arm, and the origin sensing screw and the origin sensor are used to control the reset of the swing arm.

[0015] The beneficial effects of the present utility model are as follows:

[0016] The structure of the present utility model is simple and convenient to install. By setting a swing arm, the lifting of two groups of yarn bobbins can be realized, without additional cylinders or driving parts, and the broken yarn can be quickly detected and lifted. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of the automatic lifting device of the present utility model.

[0018] Figure 2 It is a side view of the automatic lifting device of the present utility model.

[0019] Figure 3 It is a schematic structural diagram (horizontal state) of the present utility model installed on a doubling twister.

[0020] Figure 4 It is a schematic diagram of a working state of the present utility model (lifting on the left side).

[0021] Figure 5 It is another working state view of the present utility model (lifting on both sides). Detailed implementation manners

[0022] The following combines with the attached drawings to illustrate the detailed implementation manners of the present utility model.

[0023] As Figures 1-3 shown, the doubling twister related to the present utility model includes a pick screw porcelain part 7, a wire guide wheel 4, a dropping needle 11, a roller 8, and a winding mechanism 9 arranged in sequence along the running direction of the yarn 3. The winding mechanism 9 includes a winding bobbin 91 and a winding roller 93. The winding bobbin 91 is installed on the bracket through a bobbin holder movable arm 92.

[0024] An automatic lifting device 2 of the present utility model includes a mounting plate 21. The mounting plate 21 is installed on the bracket of the winding mechanism of the doubling twister. A driving motor 22 is installed on the mounting plate 21, and a swing arm 23 is linked with the driving motor 22.

[0025] The swing arm 23 is of a long strip structure. The middle of the swing arm 23 is the mounting end, and the two ends of the swing arm 23 are free ends, which are respectively arranged below the bobbin holder movable arm 92.

[0026] The swing arm 23 can be directly connected to the driving motor 22, or can be connected by a transmission mechanism such as a belt, a cam, or a gear.

[0027] In Figure 1 the preferred embodiment, the swing arm 23 is directly connected to the driving motor 22, that is, a mounting hole 231 is arranged in the middle of the swing arm 23, and the swing arm 23 is sleeved on the motor shaft of the driving motor 22 through the mounting hole 231.

[0028] The swing arm 23 is spaced from the bobbin holder movable arm 92 by a certain distance, and this distance satisfies:

[0029] (1) When the swing arm 23 is in the horizontal position, neither end of the swing arm 23 contacts the bobbin holder movable arm 92.

[0030] (2) When the swing arm 23 swings to one side (taking clockwise as an example), the left free end 232 of the swing arm 23 approaches the bobbin holder movable arm 92 at its one end until it contacts the bobbin holder movable arm 92. At this time, the right free end 233 of the swing arm 23 moves away from the bobbin holder movable arm 92 at its one end. After the swing arm contacts the bobbin holder movable arm, the bobbin holder movable arm moves together with the swing arm, so that the winding yarn bobbin is separated from the winding roller.

[0031] (3) The same is true when the swing arm swings counterclockwise.

[0032] An origin sensing screw 61 and an origin sensor 62 are further arranged above the swing arm 23. The origin sensing screw 61 and the origin sensor 62 are used to control the reset of the swing arm 23.

[0033] The specific working process of the present utility model is as follows:

[0034] See Figure 3 As shown, in the normal working state of the doubling machine, the automatic lifting device of the present utility model does not work. At this time, the swing arm 23 is in a horizontal state, and neither end of the swing arm 23 contacts the movable arm 92 of the bobbin holder.

[0035] See Figure 4 As shown, when the winding bobbin 91 on one side (the left side in this embodiment) of the doubling machine finishes winding the yarn or breaks the yarn, the drop pin 11 moves downward, causing the signal generator 12 to send out a yarn break signal and transmit this signal to the drive motor 22. The drive motor 22 drives the swing arm 23 to rotate clockwise. When the swing arm 23 rotates through a certain angle, the left free end 232 of the swing arm 23 contacts the lower end of the movable arm 92 of the bobbin holder. Under the further rotation of the swing arm 23, the movable arm 92 of the bobbin holder is pushed upward by the swing arm 23, causing the winding bobbin 91 to rotate upward together with the movable arm 92 of the bobbin holder, thereby disengaging from the winding roller 93.

[0036] See Figure 5 As shown, when the winding bobbin 91 on the other side (the right side in this embodiment) of the doubling machine finishes winding the yarn or breaks the yarn, the drop pin 11 moves downward, causing the signal generator 12 to send out a yarn break signal and transmit this signal to the drive motor 22. The drive motor 22 drives the swing arm 23 to rotate counterclockwise. When the swing arm 23 rotates through a certain angle, the right free end 233 of the swing arm 23 contacts the lower end of the movable arm 92 of the bobbin holder. Under the further rotation of the swing arm 23, the movable arm 92 of the bobbin holder is pushed upward by the swing arm 23, causing the winding bobbin 91 to rotate upward together with the movable arm 92 of the bobbin holder, thereby disengaging from the winding roller 93.

[0037] The yarn break handling device of the doubling machine of the present utility model has a simple structure and convenient operation. Only one swing arm can be used to realize the yarn break detection and lifting of the left and right groups of winding bobbins, and has good popularization value.

Claims

1. An automatic lifting device, characterized in that: It includes a mounting plate, a driving motor is mounted on the mounting plate, and a swing arm is linked to the driving motor. The swing arm is of a long strip structure, with the middle part of the swing arm being the mounting end and the two ends of the swing arm being the free ends. The two free ends of the swing arm are respectively arranged below the movable arm of the creel, and are used to lift the movable arm of the creel.

2. An automatic lifting device according to claim 1, characterized in that: The swing arm is directly connected to the driving motor. An installation hole is provided in the middle of the swing arm, and the swing arm is sleeved on the motor shaft of the driving motor through the installation hole.

3. An automatic lifting device according to claim 1, characterized in that: When the swing arm is in the horizontal position, neither of the two free ends of the swing arm contacts the movable arm of the creel.

4. An automatic lifting device according to claim 1, wherein: When the swing arm swings in one direction, one free end of the swing arm approaches the movable arm of the creel at its one end until it contacts the movable arm of the creel. At this time, the other free end of the swing arm moves away from the movable arm of the creel at its one end.

5. An automatic lifting device according to claim 4, characterized in that: The swing arm is linked to the driving motor. After the swing arm contacts the movable arm of the creel, the movable arm of the creel moves together with the swing arm.

6. An automatic lifting device according to claim 1, characterized in that: An origin sensing screw and an origin sensor are also provided above the swing arm, and the origin sensing screw and the origin sensor are used to control the reset of the swing arm.

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