Encoder mounting structure of intelligent sewing equipment

Abstract

The utility model provides an encoder mounting structure of intelligent sewing equipment, which comprises a mounting seat, and a motor stator is fixedly arranged on the inner side of the mounting seat; comprising an inductive encoder, and the inductive encoder comprises an encoder rotor and an encoder stator. The encoder stator is fixedly arranged on the outer side of the mounting seat, a gap is reserved between the encoder stator and the mounting seat, the encoder rotor is coaxially fixed with the rotating shaft through the shaft sleeve, and the encoder rotor is located in the gap between the encoder stator and the mounting seat; comprising a housing, and the housing is fixedly arranged on the outer side of the mounting seat and arranged outside the inductive encoder. The utility model solves the technical problems in the prior art that the cost of an inductance encoder is high, the position of a coded disc of the encoder needs to be accurately adjusted during installation, and the distance between a reading head and the coded disc needs to be kept unchanged after installation.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of textile, concretely relates to sewing machine, especially sewing machine parts, and particularly to an encoder mounting structure of intelligent sewing equipment. BACKGROUND

[0002] The encoder is a sensor device installed on the motor, which is used for detecting and feeding back the position, rotation speed and direction of the motor rotating shaft. Its core function is to convert mechanical motion into electrical signal for the control system to monitor and adjust the running state of the motor in real time, so as to realize accurate control.

[0003] The commonly used encoder is generally divided into three kinds of magnetic encoder, photoelectric encoder and inductive encoder, and each of the three kinds of encoders has advantages and disadvantages.

[0004] The magnetic encoder has the advantages of being insensitive to dust, oil stains and vibration, and being suitable for harsh environment, and the disadvantages of being expensive, having low resolution and accuracy, and having certain requirements for the size of the installation shaft.

[0005] The photoelectric encoder has the advantages of low price and high resolution, and the disadvantages of being fragile, being easily damaged, being sensitive to dust, lint and oil stains, being easily polluted, and being difficult to sell after.

[0006] The inductive encoder includes a code disc (encoder rotor) and a reader (encoder stator), has the advantages of close accuracy to the photoelectric encoder and good environmental adaptability, is suitable for through-shaft installation, is convenient to disassemble and assemble, is easy to produce, debug and sell after, and has the disadvantage of high installation requirement and the need to ensure that the distance between the coil reader and the code disc remains unchanged in the entire motion stroke range.

[0007] The existing market mainly uses photoelectric encoders and magnetic encoders; the inductive encoder has not been maturely applied in the sewing machine industry.

[0008] To apply the inductive encoder, the following difficulties need to be overcome:

[0009] 1. The inductive encoder has not yet a mature application scheme in the sewing machine industry, and it is difficult to form a market price advantage in mass production.

[0010] 2. The position of the encoder code disc needs to be accurately adjusted during installation, and the disassembly and adjustment are very inconvenient.

[0011] 3. The distance between the reading head and the code disc needs to be kept unchanged after installation, and the installation accuracy requirement is high. UTILITY MODEL CONTENTS

[0012] The utility model discloses a kind of encoder mounting structures of intelligent sewing equipment, the encoder mounting structure of this intelligent sewing equipment is to solve the technical problem that inductive encoder cost is more expensive in prior art, the position of encoder code disc needs to be accurately adjusted when installing, the interval of reading head and code disc is kept unchanged after installation.

[0013] An encoder mounting structure of intelligent sewing equipment, comprising a motor and a rotating shaft, the motor comprises a motor rotor and a motor stator, the motor rotor is installed in the motor stator, and the motor rotor is coaxially fixed with the rotating shaft; it comprises a mounting seat, and the motor stator is fixedly arranged on the inner side of the mounting seat; it comprises an inductive encoder, and the inductive encoder comprises an encoder rotor and an encoder stator; the encoder stator is fixedly arranged on the outer side of the mounting seat, and a gap is left between the encoder stator and the mounting seat, the encoder rotor is coaxially fixed with the rotating shaft through a shaft sleeve, and the encoder rotor is located in the gap between the encoder stator and the mounting seat; it comprises a cover, which is fixedly arranged on the outer side of the mounting seat and covers the inductive encoder.

[0014] Further, the rotating shaft is a straight through shaft.

[0015] Further, the sidewall of the shaft sleeve is provided with a threaded hole, a fastening screw is installed in the threaded hole, and the end of the fastening screw abuts against the rotating shaft.

[0016] Further, the sidewall of the cover is provided with an adjusting hole, and the adjusting hole is coaxial with the fastening screw.

[0017] Further, the cover is made of transparent material.

[0018] Further, it comprises a clasp, and the clasp fixes the wire harness of the encoder stator on the mounting seat.

[0019] Further, a binding edge is arranged at the inner side edge of the mounting seat, the outer periphery of the motor stator is provided with a mounting ring, the binding edge and the mounting ring are connected through a screw, and the inner side of the binding edge is attached to the outer periphery of the motor stator.

[0020] Further, a positioning column parallel to the axial direction is arranged on the outer side of the mounting seat, and the length of the positioning column is equal to the gap distance between the encoder stator and the mounting seat.

[0021] Compared with the prior art, the utility model has the following effects:

[0022] 1. The inductive encoder is installed on the rotating shaft to replace the ordinary magnetic encoder, and the through shaft without steps is used as the rotating shaft for installation through the shaft sleeve; the magnetic encoder has strict restrictions on the diameter of the rotating shaft, and the too large diameter of the rotating shaft may cause installation difficulty or affect the concentricity of the encoder, but the inductive encoder can adapt to rotating shafts of various diameters, the position calculation of the inductive encoder is based on the signals of the whole surface of the rotor and the stator, and errors can be offset by the factors on the diameter, which means that the performance of the inductive encoder is less dependent on the concentricity, and even if the concentricity of the rotor changes, the resolution, repeatability and accuracy will not be significantly affected. Therefore, the inductive encoder has relatively loose requirements on the concentricity, and can be easily installed on rotating shafts of various diameters through the shaft sleeve. Therefore, although the inductive encoder has a high cost, in mass production, the through shaft installation is matched, the cost of machining steps for each rotating shaft is saved, and the cost of preparing a large number of different specifications of encoders is also saved, and the inductive encoder can replace the magnetic encoder at the same or even lower cost to achieve better results.

[0023] 2. The threaded holes in the side wall of the shaft sleeve are matched with the fastening screws, the rotor of the inductive encoder is adjusted through the adjusting holes in the side wall of the cover, so that the installation accuracy of the inductive encoder is calibrated without disassembling the encoder.

[0024] 3. The edge of the mounting seat in the embodiment of the utility model is connected with the mounting ring of the motor outer ring, and the edge is connected with the periphery of the motor, thereby further improving the installation firmness and stability, so that the distance between the reading head and the code disc is changed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Fig. 1 The structure explosion schematic diagram of the embodiment in the utility model.

[0026] Fig. 2 The side view structure schematic diagram of the embodiment in the utility model.

[0027] Fig. 3 The structure schematic diagram of the embodiment in the utility model.

[0028] In the drawing: 1, rotating shaft; 2, motor stator; 201, mounting ring; 3, motor rotor; 4, mounting seat; 401, edge; 5, fastening screw; 6, encoder rotor; 7, encoder stator; 8, cover; 801, adjusting hole; 9, hoop buckle; 10, wire harness. DETAILED DESCRIPTION

[0029] The following embodiments will further illustrate the utility model, but will not limit the utility model.

[0030] As Figs. 1 to 3As shown, the embodiment provides an encoder mounting structure of an intelligent sewing device, which comprises a motor and a rotating shaft 1. The motor comprises a motor rotor 3 and a motor stator 2. The motor rotor 3 is installed in the motor stator 2 and is coaxially fixed with the rotating shaft 1. The rotating shaft 1 is a straight through shaft. The structure is a connection structure of the existing commonly used motor and the rotating shaft 1. The structure and principle thereof will not be described herein.

[0031] The mounting seat 4 comprises a through hole in the middle, which is sleeved on the rotating shaft 1. The inner side of the mounting seat 4 is connected with the motor stator 2. The inner side edge of the mounting seat 4 is provided with a binding 401. The outer periphery of the motor stator 2 is provided with a mounting ring 201. The outer periphery of the mounting seat 4 is connected with the mounting ring 201 through screws, so as to fixedly connect the mounting seat 4 with the motor stator 2. The binding 401 is in contact with the outer periphery of the motor stator 2. The binding 401 and the outer periphery of the motor stator 2 form a surface contact, so as to play a radial positioning role, further improve the mounting concentricity, firmness and stability, and avoid the change of the distance between the reading head and the code disc.

[0032] The inductive encoder comprises an encoder rotor 6 and an encoder stator 7. The encoder rotor 6 is a code disc, and the encoder stator 7 is a reader. The encoder stator 7 is fixedly connected with the outer side of the mounting seat 4 through screws. A certain gap is left between the encoder stator 7 and the mounting seat 4. The encoder rotor 6 is located in the gap between the encoder stator 7 and the mounting seat 4. The central hole of the encoder rotor 6 is fixedly connected with a shaft sleeve. The shaft sleeve of the encoder rotor 6 is coaxially fixed with the rotating shaft 1 through screws. When the rotating shaft 1 rotates, the encoder rotor 6 rotates synchronously with the rotating shaft 1. The encoder stator 7 realizes the effect of identifying the rotating angle of the rotating shaft 1 by reading the code disc information of the encoder rotor 6.

[0033] The inductive encoder comprises a cover 8, which covers the inductive encoder and is connected with the mounting seat 4 through screws, so as to realize protection of the inductive encoder and block most of the oil stains and lint from entering. The cover 8 is made of transparent plastic material. The accumulation of oil stains and lint inside can be observed through the cover 8, so as to facilitate timely cleaning.

[0034] The encoder rotor 6 is coaxially fixed with the rotating shaft 1 through a shaft sleeve, a threaded hole is formed in the side wall of the shaft sleeve, a fastening screw 5 is connected to the threaded hole, the end of the fastening screw 5 abuts against the rotating shaft 1, the fastening screw 5 fixes the shaft sleeve on the rotating shaft 1, so that the encoder rotor 6 is fixed with the rotating shaft 1. An adjusting hole 801 is formed in the side wall of the cover 8, when the rotating shaft 1 rotates to a certain position, the adjusting hole 801 is coaxial with the fastening screw 5, so that the fastening screw 5 can be adjusted in tightness by a screwdriver passing through the adjusting hole 801, thereby adjusting the connection between the encoder rotor 6 and the rotating shaft 1 in tightness, realizing the adjustment of the angular position of the encoder and the rotating shaft 1, thereby calibrating the installation position of the inductive encoder without disassembling the encoder, improving the adjustment convenience and installation accuracy.

[0035] The inductive encoder further comprises a clasp 9, the clasp 9 fixes the wire harness 10 of the encoder stator 7 on the mounting seat 4, so as to avoid the mutual entanglement between the wire harness 10 and the rotating shaft 1, and improve the installation neatness and firmness.

[0036] Further, a positioning column parallel to the axial direction is arranged on the outer side of the mounting seat 4, the length of the positioning column is equal to the gap distance between the encoder stator 7 and the mounting seat 4.

[0037] The installation method of the inductive encoder in the embodiment is as follows:

[0038] The mounting ring 201 is mounted on the outer periphery of the motor stator 2, the mounting seat 4 is first sleeved on the rotating shaft 1 through the through hole in the middle of the mounting seat 4, and then the mounting seat 4 is connected with the mounting ring 201 through a screw, at this time, the edge 401 of the mounting seat 4 is in contact with the outer peripheral surface of the motor stator 2 to realize the fixation.

[0039] Then, the fastening screw 5 is pre-screwed into the threaded hole in the side surface of the shaft sleeve of the encoder rotor 6, the encoder rotor 6 is sleeved on the rotating shaft 1, the encoder stator 7 is sleeved on the rotating shaft 1, and the encoder stator 7 is fixedly connected with the mounting seat 4 through a screw, at this time, the encoder rotor 6 is located between the encoder stator 7 and the mounting seat 4, and has not been fixedly connected with the rotating shaft 1.

[0040] Then, the cover 8 is sleeved on the inductive encoder, and is connected with the mounting seat 4 through a screw.

[0041] Finally, the rotating shaft 1 is rotated to a preset angle, the fastening screw 5 is tightened by a screwdriver passing through the adjusting hole 801 on the cover 8, the encoder rotor 6 is fixedly connected with the rotating shaft 1, the adjustment of the angular position of the encoder and the rotating shaft 1 is realized, thereby calibrating the installation position of the inductive encoder without disassembling the encoder, improving the adjustment convenience and installation accuracy.

[0042] The inductive encoder is a conventional technology, and those skilled in the art should understand its structure and principle, which will not be described herein.

[0043] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An encoder mounting structure of a smart sewing device, comprising a motor and a rotating shaft (1), the motor comprising a motor rotor (3) and a motor stator (2), the motor rotor (3) being coaxially arranged in the motor stator (2) with the rotating shaft (1), characterized in that: a mounting base (4) is arranged, the motor stator (2) is fixedly arranged on the inner side of the mounting base (4); an inductive encoder is arranged, the inductive encoder comprising an encoder rotor (6) and an encoder stator (7), the encoder stator (7) is fixedly arranged on the outer side of the mounting base (4), a gap is left between the encoder stator (7) and the mounting base (4), the encoder rotor (6) is coaxially fixed with the rotating shaft (1) through a shaft sleeve, and the encoder rotor (6) is located in the gap between the encoder stator (7) and the mounting base (4); a cover (8) is arranged, the cover (8) is fixedly arranged on the outer side of the mounting base (4) and covers the inductive encoder.

2. The encoder mounting structure of the smart sewing device according to claim 1, characterized in that: the rotating shaft (1) is a straight through shaft.

3. The encoder mounting structure of the smart sewing device according to claim 1, characterized in that: a threaded hole is arranged on the side wall of the shaft sleeve, a fastening screw (5) is arranged in the threaded hole, and the end of the fastening screw (5) abuts against the rotating shaft (1).

4. The encoder mounting structure of the smart sewing device according to claim 3, characterized in that: an adjusting hole (801) is arranged on the side wall of the cover (8), and the adjusting hole (801) is coaxial with the fastening screw (5).

5. The encoder mounting structure of the smart sewing device according to claim 1, characterized in that: the cover (8) is made of transparent material.

6. The encoder mounting structure of the smart sewing device according to claim 1, characterized in that: a clasp (9) is arranged, the clasp (9) fixes the wire harness of the encoder stator (7) on the mounting base (4).

7. The encoder mounting structure of the smart sewing device according to claim 1, characterized in that: a hem (401) is arranged at the edge of the inner side of the mounting base (4), an installation ring (201) is arranged on the outer periphery of the motor stator (2), the hem (401) and the installation ring (201) are connected through screws, and the inner side of the hem (401) is attached to the outer periphery of the motor stator (2).

8. The encoder mounting structure of the smart sewing device according to claim 1, characterized in that: a positioning column parallel to the axial direction is arranged on the outer side of the mounting base (4), and the length of the positioning column is equal to the gap distance between the encoder stator (7) and the mounting base (4). ​ ​ ​ ​ ​ ​ ​ ​ ​ ​

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