Weft accumulator control device

Abstract

The utility model provides a weft accumulator control device which comprises a motor, a motor control board and an inductance type encoder which are arranged on a shell, a motor cavity is formed in the middle of the shell, a control cavity is formed in the top of the shell, and the inductance type encoder is installed at the tail of the shell. The motor comprises a stator and a rotor, the stator is tightly attached to the inner wall of the motor cavity and is provided with a cavity penetrating in the axial direction, the rotor is rotatably arranged in the cavity in a penetrating mode, a rotating shaft of the rotor penetrates out of the tail of the shell, and the rotating shaft is of a hollow structure and allows weft yarn to penetrate through; the inductance type encoder comprises a stator plate and a rotor plate, and the rotor plate is sleeved and fixed on the part, penetrating out of the tail part of the shell, of the rotating shaft; the stator plate is sleeved outside the rotating shaft, is fixed at the tail part of the shell and is arranged opposite to the rotor plate; the stator plate is electrically connected with the motor control plate, and the motor control plate is electrically connected with the stator.

Description

Technical Field

[0001] This utility model belongs to the field of weft feeder control technology, and in particular relates to a weft feeder control device. Background Technology

[0002] Current electronic weft feeders are driven by a motor, which in turn drives the yarn winding assembly to wind and store yarn, and actively or passively releases the weft yarn to maintain a certain amount of weft yarn on the storage drum for continuous or intermittent weft insertion by looms and other weft insertion devices. Motor position detection is generally achieved through sensorless algorithm control, Hall effect position sensors, photoelectric encoders, or magnetic induction encoders. Sensorless algorithms and Hall effect position sensors have poor control response and large speed fluctuations at low speeds; photoelectric encoders offer high accuracy and fast response, but are easily affected by dust and oil contamination; the weft feeder system uses a hollow shaft motor, which cannot be well sealed, affecting the stability of photoelectric encoders; magnetic induction encoders have various solutions, but low-cost applications on hollow shafts are not yet mature, their response is insufficient at high speeds, and their installation requirements are relatively high, limiting their application in weft feeders.

[0003] Therefore, it is necessary to provide a weft feeder control device that improves response speed and stability while facilitating installation and maintenance. Utility Model Content

[0004] This invention provides a weft feeder control device that improves response speed and stability while facilitating installation and maintenance.

[0005] To achieve the above objectives, the present invention provides the following technical solution.

[0006] A weft feeder control device includes a motor, a motor control board, and an inductive encoder disposed in a housing. The housing has a motor chamber in the middle and a control chamber at the top. The inductive encoder is installed at the tail of the housing.

[0007] The motor includes a stator and a rotor. The stator is disposed close to the inner wall of the motor chamber and has a cavity that extends axially. The rotor is rotatably disposed in the cavity. The rotor shaft extends out from the tail of the housing. The shaft has a hollow structure that allows weft yarns to pass through.

[0008] The inductive encoder includes a stator plate and a rotor plate. The rotor plate is sleeved and fixed to the portion of the rotating shaft that extends out of the tail of the housing. The stator plate is sleeved outside the rotating shaft and fixed to the tail of the housing, and is disposed opposite to the rotor plate.

[0009] The stator board is electrically connected to the motor control board, and the motor control board is electrically connected to the stator.

[0010] Preferably, the rotor plate is provided with regular copper plating; the stator plate is provided with coil groups, signal conditioning circuit, stator plate control module and stator plate angle transmission and position correction module connected in sequence; the coil group includes stator plate excitation coil, stator plate single-turn induction coil and stator plate multi-turn induction coil;

[0011] Preferably, the motor control board includes an electronic control module and a motor drive module. The electronic control module is connected to the stator plate angle transmission and position correction module to obtain the position information of the rotor plate. The motor drive module is connected to the stator of the motor. The motor control board controls the operation of the motor according to the position information of the rotor plate.

[0012] Preferably, the rotor plate is fixed to the rotating shaft by a rotor seat, the center of the rotor seat is provided with a center hole that matches the rotating shaft, and the rotor seat is fixedly connected to the rotating shaft by interference fit through the center hole; the rotor plate is snapped and fixed to the rotor seat.

[0013] Preferably, the rotor base is made of aluminum alloy.

[0014] Preferably, the stator plate is fixed to the tail of the housing by a stator plate bracket.

[0015] Preferably, the stator plate bracket has a central clearance hole at its center, and the stator plate bracket is sleeved on the outer periphery of the rotor plate; the stator plate bracket has fixing holes spaced apart on its edges, and the stator plate bracket is fixed to the housing through the fixing holes; the outer edge of the stator plate bracket has mounting holes spaced apart, and the mounting holes are offset from the fixing holes; the mounting holes are threaded holes, and the stator plate is fixed by screwing screws into the mounting holes.

[0016] Preferably, an encoder cover is provided at the rear of the housing, the encoder cover being disposed outside the stator plate and allowing the rotating shaft to pass through.

[0017] Preferably, a control panel cover is provided on the top of the housing, and the control panel cover encloses the control chamber.

[0018] Compared with the prior art, the technical solution of this utility model embodiment has beneficial effects.

[0019] For example, the weft feeder control device provided by this utility model adopts an inductive encoder. The inductive encoder has high detection accuracy and fast response, which improves the operation control accuracy and response speed of the weft feeder system and meets the needs of rapid response in special applications. The inductive encoder includes a rotor plate and a stator plate. The rotor plate is sleeved and fixed to the part of the shaft that extends out of the housing. The stator plate is sleeved outside the shaft and fixed to the tail of the housing and is arranged opposite to the rotor plate, which facilitates assembly and testing and reduces assembly requirements. The inductive encoder is not affected by dust and oil, has strong anti-interference ability, and is suitable for the through-shaft application of the weft feeder, solving the problem of the photoelectric encoder being affected by dust.

[0020] Furthermore, the stator board of the inductive encoder is equipped with coil groups, signal conditioning circuits, stator board control modules, and stator board angle transmission and position correction modules connected in sequence. In conjunction with the motor control board, it realizes functions such as controlling motor rotation, acquiring and correcting inductive signals, zero-position positioning and setting, and zero-position verification and testing. Attached Figure Description

[0021] Figure 1 This is a front view of the weft feeder control device in an embodiment of this utility model;

[0022] Figure 2 This is a structural diagram of the weft feeder control device in an embodiment of this utility model;

[0023] Figure 3 This is an exploded view of the weft feeder control device in an embodiment of this utility model;

[0024] Figure 4 This is a partial sectional view of the weft feeder control device in an embodiment of this utility model;

[0025] Figure 5 This is a schematic diagram of the stator plate support structure in an embodiment of the present invention;

[0026] Figure 6 This is a control principle diagram of the weft feeder control device in an embodiment of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1-Shaft; 2-Rotor base; 3-Rotor plate; 4-Stator plate; 5-Encoder cover; 6-Motor control board; 7-Control board cover; 10-Stator plate bracket; 10-1-Center clearance hole; 10-2-Fixing hole; 10-3-Screw; 11-Housing; 12-Rotor; 13-Stator;

[0029] A1 - Stator board excitation coil; BS1 - Stator board single-turn induction coil; BN1 - Stator board multi-turn induction coil; C3 - Electronic control module; C4 - Motor drive module; D1 - Stator board control module; D2 - Signal conditioning circuit; D3 - Stator board angle transmission and position correction module. Detailed Implementation

[0030] To make the objectives, features, and beneficial effects of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described below are merely for explaining this utility model and are not intended to limit it. Furthermore, the same or similar reference numerals may be used in the drawings to refer to the same or similar elements in different embodiments, and descriptions of the same or similar elements in different embodiments, as well as descriptions of prior art elements, features, effects, etc., may be omitted.

[0031] Reference Figures 1 to 6 The weft feeder control device includes a motor, a motor control board 6 and an inductive encoder installed in the housing 11. The housing 11 has a motor chamber in the middle and a control chamber at the top. The inductive encoder is installed at the tail of the housing 11.

[0032] The motor includes a stator 13 and a rotor 12. The stator 13 is disposed close to the inner wall of the motor chamber and has a cavity that extends through the axis. The rotor 12 is rotatably disposed in the cavity. The shaft 1 of the rotor 12 extends out from the tail of the housing 11. The shaft 1 has a hollow structure that allows weft yarns to pass through.

[0033] The inductive encoder includes a stator plate 4 and a rotor plate 3. The rotor plate 3 is sleeved and fixed to the part of the shaft 1 that extends out of the housing 11. The stator plate 4 is sleeved outside the shaft 1 and fixed to the tail of the housing 11 and is arranged opposite to the rotor plate 3.

[0034] In some embodiments, the rotor plate 3 is provided with regular copper plating; the stator plate 4 is provided with a coil group, a signal conditioning circuit D2, a stator plate control module D1 and a stator plate angle transmission and position correction module D3 connected in sequence; the coil group includes a stator plate excitation coil A1, a stator plate single-turn induction coil BS1 and a stator plate multi-turn induction coil BN1.

[0035] Specifically, the stator plate multi-turn induction coil BN1 has N turns, and the stator plate single-turn induction coil BS1 has 1 turn. The stator plate excitation coil A1 receives the excitation signal and generates a magnetic field. When the motor is running, the rotor plate 3 rotates with the shaft 1 and cuts the magnetic field of the stator plate excitation coil A1. When the rotor plate 3 rotates one revolution, the stator plate multi-turn induction coil BN1 senses N cycles of sine / cosine signals as angle sensing signals, and the stator plate single-turn induction coil BS1 senses 1 cycle of sine / cosine signals as absolute position reference signals.

[0036] In some embodiments, the motor control board 6 includes an electronic control module C3 and a motor drive module C4. The electronic control module C3 is connected to the stator plate angle transmission and position correction module D3 to obtain the position information of the rotor plate 3. The motor drive module C4 is connected to the stator 13 of the motor. The motor control board 6 controls the operation of the motor according to the position information.

[0037] In some embodiments, the rotor plate 3 is fixed to the rotating shaft 1 by the rotor seat 2. The center of the rotor seat 2 is provided with a center hole that matches the rotating shaft 1. The rotor seat 2 is fixedly connected to the rotating shaft 1 by interference fit through the center hole. The rotor plate 3 is snapped and fixed to the rotor seat 2.

[0038] In some embodiments, the rotor base 2 is made of aluminum alloy.

[0039] In some embodiments, the stator plate 4 is fixed to the tail of the housing 11 by the stator plate bracket 10.

[0040] In some embodiments, a center clearance hole 10-1 is provided at the center of the stator plate bracket 10, and the stator plate bracket 10 is sleeved on the outer periphery of the rotor plate 3; fixing holes 10-2 are provided at intervals along the edge of the stator plate bracket 10, and the stator plate bracket 10 is fixed to the housing 11 through the fixing holes 10-2; mounting holes are provided at intervals along the outer edge of the stator plate bracket 10, and the mounting holes are threaded holes, and the stator plate 4 is fixed by screwing screws 10-3 into the mounting holes.

[0041] In some embodiments, the rear of the housing 11 is provided with an encoder cover 5, which covers the stator plate 4 and allows the rotating shaft 1 to pass through.

[0042] In some embodiments, a control panel cover 7 is provided on the top of the housing 11, and the control panel cover 7 encloses the control chamber 11-2.

[0043] In summary, the weft feeder control device provided by this utility model adopts an inductive encoder. The inductive encoder has high detection accuracy and fast response, which improves the operation control accuracy and response speed of the weft feeder system and meets the requirements of rapid response in special applications. The inductive encoder includes a stator plate 4 and a rotor plate 3. The rotor plate 3 is sleeved and fixed to the part of the shaft 1 that extends out of the housing 11. The stator plate 4 is sleeved outside the shaft 1 and fixed to the tail of the housing 11 and is arranged opposite to the rotor plate 3. This facilitates assembly and testing and reduces assembly requirements. The inductive encoder is not affected by dust and oil, has strong anti-interference ability, and is suitable for the shaft-mounted application of the weft feeder, solving the problem of dust affecting photoelectric encoders.

[0044] Furthermore, the stator plate 4 of the inductive encoder is provided with a coil group, a signal conditioning circuit D2, a stator plate control module D1, and a stator plate angle transmission and position correction module D3 connected in sequence. In conjunction with the motor control board 7, it realizes functions such as controlling motor rotation, acquiring and correcting induction signals, zero position positioning and setting, and zero position verification and testing.

[0045] Although specific embodiments have been described above, these embodiments are not intended to limit the scope of this utility model disclosure, even when only a single embodiment is described with respect to a particular feature. The feature examples provided in this utility model disclosure are intended to be illustrative and not limiting, unless otherwise stated. In practice, one or more technical features of the dependent claims may be combined with the technical features of the independent claims as needed and where technically feasible, and may be derived from the technical features of the respective independent claims in any suitable manner rather than solely by the specific combinations listed in the claims.

Claims

1. A weft feeder control device, characterized in that, It includes a motor, a motor control board, and an inductive encoder disposed in the housing. The housing has a motor chamber in the middle and a control chamber at the top. The inductive encoder is installed at the rear of the housing. The motor includes a stator and a rotor. The stator is disposed close to the inner wall of the motor chamber and has a cavity that extends axially. The rotor is rotatably disposed in the cavity. The rotor shaft extends out from the tail of the housing. The shaft has a hollow structure that allows weft yarns to pass through. The inductive encoder includes a stator plate and a rotor plate. The rotor plate is sleeved and fixed to the portion of the rotating shaft that extends out of the tail of the housing. The stator plate is sleeved outside the rotating shaft and fixed to the tail of the housing, and is disposed opposite to the rotor plate. The stator board is electrically connected to the motor control board, and the motor control board is electrically connected to the stator.

2. The weft feeder control device according to claim 1, characterized in that, The rotor plate is provided with regular copper plating; the stator plate is provided with coil groups, signal conditioning circuit, stator plate control module and stator plate angle transmission and position correction module connected in sequence; the coil group includes stator plate excitation coil, stator plate single-turn induction coil and stator plate multi-turn induction coil.

3. The weft feeder control device according to claim 2, characterized in that, The motor control board includes an electronic control module and a motor drive module. The electronic control module is connected to the stator plate angle transmission and position correction module to obtain the position information of the rotor plate. The motor drive module is connected to the stator of the motor. The motor control board controls the operation of the motor according to the position information.

4. The weft feeder control device according to claim 1, characterized in that, The rotor plate is fixed to the rotating shaft by a rotor seat. The center of the rotor seat is provided with a center hole that matches the rotating shaft. The rotor seat is fixedly connected to the rotating shaft by interference fit through the center hole. The rotor plate is snapped and fixed to the rotor seat.

5. The weft feeder control device according to claim 4, characterized in that, The rotor base is made of aluminum alloy.

6. The weft feeder control device according to claim 1, characterized in that, The stator plate is fixed to the rear of the housing by a stator plate bracket.

7. The weft feeder control device according to claim 6, characterized in that, The stator plate bracket has a central clearance hole at its center and is sleeved on the outer periphery of the rotor plate. The stator plate bracket has fixing holes spaced apart along its edges and is fixed to the housing through these fixing holes. The outer edge of the stator plate bracket has mounting holes spaced apart and are offset from the fixing holes. The mounting holes are threaded holes and are fixed by screws into the mounting holes.

8. The weft feeder control device according to claim 1, characterized in that, An encoder cover is provided at the rear of the housing, which covers the stator plate and allows the rotating shaft to pass through.

9. The weft feeder control device according to claim 1, characterized in that, A control panel cover is provided on the top of the housing, and the control panel cover encloses the control chamber.

Images