CN211123747U - Yarn feeding servo device for preventing yarn breakage caused by accidental power failure - Google Patents
Yarn feeding servo device for preventing yarn breakage caused by accidental power failure Download PDFInfo
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- CN211123747U CN211123747U CN201921900054.8U CN201921900054U CN211123747U CN 211123747 U CN211123747 U CN 211123747U CN 201921900054 U CN201921900054 U CN 201921900054U CN 211123747 U CN211123747 U CN 211123747U
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- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000001629 suppression Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims description 3
- 239000004753 textile Substances 0.000 abstract description 3
- 238000009940 knitting Methods 0.000 description 11
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 6
- 230000001360 synchronised effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The application relates to the technical field of textile machinery, in particular to a yarn feeding servo device for preventing yarn breakage caused by accidental power failure, which comprises a servo driver and a servo motor, wherein the servo driver comprises a power supply module, a circuit control detection module, a pulse receiving module and a main control chip, the power supply module comprises a three-phase rectification circuit, a current suppression circuit, an electric power storage circuit, a switching power supply circuit and an inverter circuit, and the switching power supply circuit and the inverter circuit are simultaneously connected to a rectified loop; the servo motor comprises an actuating motor and an encoder. The servo driver and the servo motor are adopted as the yarn feeding device to replace the existing mechanical structure, so that the operation is convenient and fast, and the cost is reduced. Through the mode that the switch power supply circuit and the main loop circuit are arranged in the servo driver to share the bus and the electric storage circuit and the multiple groups of slave shaft servers share the bus, the slave shaft servo motor can also follow the inertial motion of the master shaft motor under the condition of power failure, and the occurrence of the yarn breakage condition is avoided.
Description
Technical Field
The application relates to the technical field of textile machinery, in particular to a yarn feeding servo device for preventing yarn breakage caused by accidental power failure.
Background
A large circular knitting machine, known as a circular weft knitting machine or a circular weft knitting machine, is common textile equipment, in a yarn feeding mechanism of the circular knitting machine, a shaft of a yarn feeding aluminum disc and a main power motor are driven through a synchronous belt and a synchronous wheel, the main power motor drives the yarn feeding aluminum disc to rotate, and meanwhile, the yarn feeding aluminum disc drives a yarn feeding device to rotate through the synchronous wheel. Generally, circular machines comprise a plurality of yarn feeding devices, each of which comprises a yarn feeder and a synchronous yarn feeding motor. The big circular knitting machine carries out the during operation, need monitor the yarn length of carrying, and the yarn length is the important index of guaranteeing the fabric quality, and the regulation of yarn length needs mechanical engineer to need the not unidimensional yarn feeding aluminum disc of debugging experience change, and is higher to engineer's requirement, and it is more loaded down with trivial details that the dismouting machinery needs to change the yarn feeding aluminum disc simultaneously, trades yarn operation at every turn complicated, consuming time. Therefore, the servo can be used for replacing the traditional yarn feeding device, so that the installation steps can be simplified, and the yarn feeding control is more accurate.
At the present stage, a switching power supply circuit and a main loop circuit of a servo driver on the market are separately powered, and the purpose is to improve the anti-interference capability and reduce the influence of the main loop circuit on the switching power supply. Due to the particularity of the yarn feeding mechanism of the circular knitting machine, the yarn feeding mechanism applying the servo to the circular knitting machine must comprise a main shaft servo and a plurality of auxiliary shaft servos, the main shaft servo is used for driving a main power motor of the circular knitting machine to operate, the auxiliary shaft servos are used for replacing the existing mechanical yarn feeding device, the main shaft servo and the auxiliary shaft servos must be synchronous, when an external power supply abnormally fails, the main shaft servo and the auxiliary shaft servos can be immediately powered off, the main shaft motor can still operate for a period of time due to large inertia, and therefore the power-off speed of a switching power supply between the main shaft servo and the auxiliary shaft servos is inconsistent, and yarn breakage of the yarn feeding device is caused.
Disclosure of Invention
The utility model discloses an one of the purpose lies in overcoming above shortcoming, provides a send yarn servo for preventing unexpected outage from causing disconnected yarn, guarantees the synchronization of main shaft servo driver and the driven motor of follow axle servo driver under the outage condition, prevents that the disconnected yarn condition from taking place.
In order to solve the technical problem, the utility model provides a yarn feeding servo device for preventing yarn breakage caused by unexpected power failure, which comprises a servo driver and a servo motor, wherein the servo driver and the servo motor are connected with a power cable through an encoder cable, the servo driver is used for supplying power to the servo motor and driving the servo motor to operate, the servo motor is used for driving a yarn feeder to operate,
the servo driver comprises a power supply module, a circuit control detection module, a pulse receiving module and a main control chip,
the power supply module is respectively connected with the circuit control detection module and the main control chip and used for accessing alternating current and supplying power to other modules, the power supply module comprises a three-phase rectification circuit, a current suppression circuit, a power storage circuit, a switching power supply circuit and an inverter circuit, wherein the three-phase rectification circuit is used for converting the alternating current into direct current, the current suppression circuit is used for suppressing surge current, the power storage circuit is used for filtering the direct current and storing electric energy, the switching power supply circuit is used for providing multi-path direct current output, and the inverter circuit is used for converting the direct current into the alternating current and supplying power to the servo motor through the power supply cable; the switching power supply circuit and the inverter circuit are simultaneously connected to a loop rectified by the three-phase rectifying circuit;
the circuit control detection module is connected with the power supply module and the main control chip and is used for detecting and protecting and controlling the current and the voltage provided by the power supply module;
the pulse receiving module is connected with an external hollow encoder through a signal wire and used for receiving a feedback signal of the hollow encoder; the feedback signal is connected with the main control chip and used for sending the feedback signal to the main control chip;
the main control chip is connected with the pulse receiving module and used for receiving a feedback signal of the hollow encoder; the control circuit is used for controlling the output of the inverter circuit through an SVPWM algorithm according to the feedback signal of the hollow encoder so as to control the rotation of the servo motor; the servo motor is connected with an encoder of the servo motor through a signal wire and used for receiving a feedback signal of the servo motor to form closed-loop control;
the servo motor comprises an execution motor and an encoder, wherein the execution motor operates according to the output of the inverter circuit and drives the yarn feeder to operate, and the encoder is used for following the operation of the execution motor and giving a feedback signal to the servo driver.
Further, the three-phase rectifying circuit is composed of two groups of single-phase rectifying bridges.
Further, the electric storage circuit is formed by connecting a plurality of groups of capacitors in parallel, and the capacitance parameter is preferably 470 uf/400V.
Furthermore, the yarn feeding servo device for preventing yarn breakage caused by accidental power failure comprises a plurality of groups of servo drivers and servo motors, wherein the servo drivers correspond to the servo motors one to one.
Furthermore, the multiple groups of servo drivers share a bus, that is, any one servo driver is connected with alternating current, and direct current rectified by the power supply module is led out to other servo drivers for power supply.
Be different from prior art, the utility model discloses technical scheme's beneficial effect has:
1. the servo driver and the matched servo motor are used as the yarn feeding device to replace the existing mechanical structure, so that the operation is convenient and fast, and the labor cost is reduced.
2. Through set up switching power supply circuit and main circuit in servo driver inside and share the generating line and set up the electric power storage circuit to and the mode of sharing the generating line between the multiunit slave shaft servo, guarantee under the power failure condition slave shaft servo motor can also follow main shaft motor inertial motion several seconds, avoid the emergence of the condition of disconnected yarn.
Drawings
FIG. 1 is a structural frame diagram of a yarn feeding servo device for preventing yarn breakage caused by unexpected power failure.
Fig. 2 is a schematic circuit diagram of the power supply module of the present invention.
FIG. 3 is an external wiring diagram of the multi-group yarn feeding servo device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
Different from the traditional circular knitting machine mechanical structure, in the circular knitting machine adopting the yarn feeding servo device, a main shaft is formed by a main servo driver and a corresponding executing motor, an original yarn feeding aluminum disc is replaced by a hollow encoder, and the hollow encoder is arranged on a transmission mechanism of the main shaft executing motor. The yarn feeding servo device is also called a driven shaft, is connected with a hollow encoder, is arranged on a yarn feeding iron ring, and drives a yarn feeder to operate through a transmission belt.
As shown in fig. 1, the utility model relates to a yarn feeding servo device structure frame diagram for preventing unexpected outage from causing yarn breakage, its composition and theory of operation explain as follows: the servo driver and the servo motor are connected with a power cable through an encoder cable, the servo driver supplies power to the servo motor through the power cable and drives the servo motor to operate, and the servo motor drives the yarn conveyor to operate through a conveying belt which is mechanically connected.
The servo driver comprises a power supply module, a circuit control detection module, a pulse receiving module and a main control chip, wherein the power supply module is respectively connected with the circuit control detection module and the main control chip and used for accessing alternating current and supplying power for other modules.
The circuit control detection module is connected with the power supply module and the main control chip and used for detecting and protecting the current and the voltage provided by the power supply module, and the circuit control detection module comprises fan control, voltage detection, brake control, overcurrent protection, current detection, nixie tube display, key control and the like.
The pulse receiving module is connected with an external hollow encoder through a signal wire and is used for receiving a feedback signal of the hollow encoder, wherein the feedback signal reflects the running condition of the spindle and comprises a position instruction pulse signal and a direction instruction pulse signal; and the pulse receiving module is simultaneously connected with the main control chip and sends the feedback signal to the main control chip.
The main control chip is connected with the pulse receiving module and used for receiving a feedback signal of the hollow encoder; meanwhile, the output of the inverter circuit is controlled through an SVPWM algorithm according to a feedback signal of the hollow encoder so as to control the rotation of the servo motor; in addition, the main control chip is also connected with an encoder of the servo motor through a signal wire and used for receiving a feedback signal of the operation condition of the servo motor to form closed-loop control;
the servo motor comprises an execution motor and an encoder, wherein the execution motor operates according to the output of an inverter circuit in the servo driver and drives the yarn feeder to operate through a conveyor belt, and the encoder operates along with the execution motor and feeds back the operating direction and position information of the motor to the servo driver.
The power supply module in the servo driver comprises a three-phase rectification circuit, a current suppression circuit, a power storage circuit, a switch power supply circuit and an inverter circuit, wherein the three-phase rectification circuit is used for accessing a mains supply and converting alternating current into direct current, the current suppression circuit is used for suppressing surge current, the power storage circuit is used for filtering and storing the direct current, the switch power supply circuit is used for providing multi-path direct current output for different modules, such as 5V and 24V, and the inverter circuit is used for converting the direct current into the alternating current and supplying power to a servo motor through a power cable; the switch power supply circuit and the inverter circuit are simultaneously connected to a loop rectified by the three-phase rectifying circuit, and the inverter circuit supplies power to the servo motor, so that the power supply synchronization of the yarn feeding servo driver and the yarn feeding servo motor can be ensured through the common bus of the switch power supply circuit and the inverter circuit;
as fig. 2, it is the utility model discloses power supply module circuit schematic diagram, RST passes through three-phase rectifier circuit rectification back in the picture, output direct current gives inversion part and switching power supply part power supply, the electric power storage circuit comprises C1, C2, C3, four group's electric capacity of C4, select the bus-bar capacitance of suitable capacity, can guarantee under the circumstances of outage, send yarn servo can also keep the motor operation more than 2s under 30% load, until the bus-bar voltage drops to about 165V, when switching power supply does not have the output, the motor stop work. In addition, a current suppression circuit is also arranged in the power supply module circuit, the relay is controlled to pull in by a control signal, and the current suppression circuit and the parallel resistor are used for suppressing surge current.
In a preferred embodiment, the three-phase rectifier circuit in the power supply module circuit is composed of two sets of single-phase rectifier bridges.
In another preferred embodiment, the accumulator circuit in the power supply module circuit is formed by a plurality of sets of capacitors connected in parallel, and the capacitance parameter is preferably 470 uf/400V.
Because current big circular knitting machine usually has the yarn feeding device of multiunit, correspondingly, this application a yarn feeding servo for preventing unexpected outage from causing the broken yarn also can contain multiunit servo driver and servo motor, servo driver and servo motor one-to-one, for example, can use 6 yarn feeding servo as the slave shaft, constitute yarn feeding system, follow the main shaft operation.
Fig. 3 is the utility model discloses multiunit yarn feeding servo device outside wiring picture, in the picture, ordinary commercial power inserts a set of yarn feeding servo device's yarn feeding servo driver after circuit breaker and electromagnetic contactor for the wiring, carry out the rectification to the alternating current by this yarn feeding servo driver's power module, processing such as filtering, provide stable DC power supply for inside each module, and simultaneously, the electric current after handling through the contravariant module sends yarn servo motor through motor power supply cable output control and rotates, and receive yarn servo motor's feedback signal through the motor encoder cable, form closed-loop control.
Preferably, the multiple groups of servo drivers can be arranged as a common bus, that is, any one servo driver is connected with alternating current, and direct current rectified by the power supply module is led out to other servo drivers for power supply. In fig. 3, direct current is led out from a P +/PN pin of a first group of yarn feeding servo drivers to supply power to a servo driver of a second yarn feeding servo device, so that the effect that a plurality of yarn feeding servo devices can be kept synchronous when power is off is achieved. Optionally, direct current can be led out from a P +/PN pin of the yarn feeding servo driver in the first group to supply direct current for other equipment, such as a touch screen.
This application adopts servo driver and the servo motor who matches as the yarn feeding device, replaces current mechanical structure, and convenient operation is swift, reduces the human cost simultaneously. Through set up switching power supply circuit and main circuit in servo driver inside and share the generating line and set up the electric power storage circuit to and the mode of sharing the generating line between the multiunit slave shaft servo, guarantee under the power failure condition slave shaft servo motor can also follow main shaft motor inertial motion several seconds, avoid the emergence of the condition of disconnected yarn.
The above-mentioned specific implementation is only to explain in detail the technical solution of the present invention, the present invention is not limited to the above-mentioned embodiments, and any improvement or replacement according to the principle of the present invention should be within the protection scope of the present invention.
Claims (5)
1. A yarn feeding servo device for preventing yarn breakage caused by accidental power failure is characterized by comprising a servo driver and a servo motor, wherein the servo driver and the servo motor are connected with a power cable through an encoder cable, the servo driver is used for supplying power to the servo motor and driving the servo motor to operate, the servo motor is used for driving a yarn feeder to operate,
the servo driver comprises a power supply module, a circuit control detection module, a pulse receiving module and a main control chip,
the power supply module is respectively connected with the circuit control detection module and the main control chip and used for accessing alternating current and supplying power to other modules, the power supply module comprises a three-phase rectification circuit, a current suppression circuit, a power storage circuit, a switching power supply circuit and an inverter circuit, wherein the three-phase rectification circuit is used for converting the alternating current into direct current, the current suppression circuit is used for suppressing surge current, the power storage circuit is used for filtering the direct current and storing electric energy, the switching power supply circuit is used for providing multi-path direct current output, and the inverter circuit is used for converting the direct current into the alternating current and supplying power to the servo motor through the power supply cable; the switching power supply circuit and the inverter circuit are simultaneously connected to a loop rectified by the three-phase rectifying circuit;
the circuit control detection module is connected with the power supply module and the main control chip and is used for detecting and protecting and controlling the current and the voltage provided by the power supply module;
the pulse receiving module is connected with an external hollow encoder through a signal wire and used for receiving a feedback signal of the hollow encoder; the feedback signal is connected with the main control chip and used for sending the feedback signal to the main control chip;
the main control chip is connected with the pulse receiving module and used for receiving a feedback signal of the hollow encoder; the control circuit is used for controlling the output of the inverter circuit through an SVPWM algorithm according to the feedback signal of the hollow encoder so as to control the rotation of the servo motor; the servo motor is connected with an encoder of the servo motor through a signal wire and used for receiving a feedback signal of the servo motor to form closed-loop control;
the servo motor comprises an execution motor and an encoder, wherein the execution motor operates according to the output of the inverter circuit and drives the yarn feeder to operate, and the encoder is used for following the operation of the execution motor and giving a feedback signal to the servo driver.
2. The yarn feeding servo device for preventing yarn breakage due to an unexpected power failure as claimed in claim 1, wherein said three-phase rectifier circuit is composed of two sets of single rectifier bridges.
3. The yarn feeding servo device for preventing yarn breakage caused by unexpected power failure as claimed in claim 1, wherein the electric storage circuit is composed of a plurality of groups of capacitors connected in parallel, and the capacitance parameter is preferably 470 uf/400V.
4. The yarn feeding servo device for preventing yarn breakage due to unexpected power failure as claimed in claim 1, comprising a plurality of sets of servo drivers and servo motors, wherein the servo drivers and the servo motors are in one-to-one correspondence.
5. The yarn feeding servo device for preventing yarn breakage caused by unexpected power failure as claimed in claim 4, wherein the multiple groups of servo drivers share a bus, that is, any one servo driver is connected with alternating current, and the direct current rectified by the power supply module is led out to other servo drivers for power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921900054.8U CN211123747U (en) | 2019-11-06 | 2019-11-06 | Yarn feeding servo device for preventing yarn breakage caused by accidental power failure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921900054.8U CN211123747U (en) | 2019-11-06 | 2019-11-06 | Yarn feeding servo device for preventing yarn breakage caused by accidental power failure |
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| Publication Number | Publication Date |
|---|---|
| CN211123747U true CN211123747U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921900054.8U Withdrawn - After Issue CN211123747U (en) | 2019-11-06 | 2019-11-06 | Yarn feeding servo device for preventing yarn breakage caused by accidental power failure |
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| CN (1) | CN211123747U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794769A (en) * | 2019-11-06 | 2020-02-14 | 庸博（厦门）电气技术有限公司 | Yarn feeding servo device for preventing yarn breakage caused by accidental power failure |
-
2019
- 2019-11-06 CN CN201921900054.8U patent/CN211123747U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110794769A (en) * | 2019-11-06 | 2020-02-14 | 庸博（厦门）电气技术有限公司 | Yarn feeding servo device for preventing yarn breakage caused by accidental power failure |
| CN110794769B (en) * | 2019-11-06 | 2024-08-13 | 庸博（厦门）电气技术有限公司 | Yarn feeding servo device for preventing yarn breakage caused by accidental power failure |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200728 Effective date of abandoning: 20240813 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20200728 Effective date of abandoning: 20240813 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |