Spindle encoder independent installation device for sewing machine

Abstract

The utility model belongs to the technical field of sewing machines, and particularly relates to a spindle encoder independent installation device for a sewing machine, which comprises an encoder main body arranged on the outer side of a sewing machine main body and a spindle arranged in the sewing machine main body, the rear end of the spindle is connected with a motor used for driving the spindle to rotate, and the front end of the spindle is provided with magnetic steel. The encoder main body is located on one side close to the magnetic steel, a magnetic encoder chip matched with the magnetic steel for use is arranged in the encoder main body, and the encoder main body is detachably connected with the sewing machine main body through a fastener. Compared with the integrated design of the motor and the encoder in the prior art, the encoder is separated from the motor, so that the encoder can be far away from the environment with more dust, the dustproof and anti-interference effects are realized, the service life is longer, the installation and the maintenance are also simple, and the use cost of equipment is greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to sewing machine technical field especially point to a kind of main shaft encoder independent mounting device for sewing machine. BACKGROUND

[0002] Industrial sewing machine is very widely used, and the existing industrial sewing machine: motor front shaft is connected with sewing machine head main shaft through coupling, grating piece is fixed on motor front shaft by screw, encoder circuit board is fixed on motor rear end cover by screw.

[0003] As China utility model, patent number CN202221780276.2, the quick dismounting structure of a kind of servo motor encoder is disclosed, including motor assembly and encoder assembly, motor assembly includes motor stator, the outer convex surface of motor stator is provided with motor end cover, the end face of the encoder housing is formed with buckle piece, the motor end cover is provided with the buckle hole for the insertion of buckle piece.

[0004] And due to the fact that the oil pollution environment of sewing machine work site is bad, and fan is also provided at the rear of motor, fan can be used to heat dissipation of motor and other electronic components during work, but under the long-time work, external dust and wool can also be sucked into the encoder by fan, thereby affecting the service life and working accuracy of encoder, leading to that motor cannot be controlled to operate normally, if disassembling and repairing, due to the fact that there are many parts here, disassembling is also very complex, even if the encoder is repaired, reinstallation is carried out, the sealing property between parts cannot reach the previous state, dustproof performance is greatly reduced, after a period of continuous use, the encoder is still damaged, so its structure needs to be further improved. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a kind of main shaft encoder independent mounting device for sewing machine, by the encoder independent installation in the position away from motor, solve the problem that existing motor encoder is easily damaged and inconvenient to disassemble.

[0006] The utility model aims at being realized as follows: a kind of main shaft encoder independent mounting device for sewing machine, characterized by, including the encoder main body being set to the outside of sewing machine main body and the main shaft being set to the inside of sewing machine main body, the rear end of main shaft is connected with the motor for driving its rotation, the front end of main shaft is installed with magnetic steel, encoder main body is located at the side close to magnetic steel, the magnetic encoder chip for cooperation with magnetic steel is provided in the encoder main body, and the encoder main body is detachably connected with sewing machine main body by fastener.

[0007] Preferably, a mounting hole is provided on the front side of the sewing machine body, a bearing end cover is provided in the mounting hole, a through hole for the main shaft to extend is provided in the bearing end cover, and the encoder body is installed on the end surface of the bearing end cover.

[0008] Preferably, a dustproof pad is provided between the encoder body and the bearing end cover.

[0009] Preferably, an oil-proof pad is provided between the bearing end cover and the sewing machine body.

[0010] Preferably, the model of the magnetic encoder chip is MA600.

[0011] Preferably, a threaded hole is provided at the front end of the main shaft, a stainless steel magnetic steel seat is screwed into the threaded hole, and the magnetic steel is arranged in the stainless steel magnetic steel seat.

[0012] Preferably, a bearing is provided between the outer periphery of the main shaft and the mounting hole, and an oil seal is provided between the outer periphery of the stainless steel magnetic seat and the bearing end cover.

[0013] Compared with the prior art, the present invention has the following outstanding and beneficial technical effects:

[0014] The utility model adopts an independent design of the encoder, so that the encoder can be installed at any position away from the motor, and by working with the magnet installed on the main shaft in the sewing machine, the absolute angular position of the magnet can be detected, thereby realizing real-time control of the motor through numerical control. Compared with the design of the motor and encoder as an integral whole in the prior art, the utility model separates the encoder from the motor, so that the encoder can be kept away from dusty environments, has dust-proof and anti-interference effects, has a longer service life, is simple to install and maintain, and greatly reduces the cost of using the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the utility model Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of the utility model Figure 2 .

[0017] Figure 3 Schematic diagram of the exploded structure of the encoder body parts Figure 1 .

[0018] Figure 4 It is a schematic cross-sectional structural diagram of the present utility model.

[0019] Figure 5 for Figure 4 A magnified schematic diagram of the structure at point A in the middle.

[0020] Figure 6Parts explosion structure diagram of encoder main body Figure 2 .

[0021] Fig. 1 - sewing machine main body; 2 - encoder main body; 3 - main shaft; 4 - motor; 5 - magnetic steel; 6 - magnetic encoder chip; 7 - oil-proof pad; 8 - bearing end cover; 9 - through hole; 10 - dust-proof pad; 11 - threaded hole; 12 - stainless steel magnetic steel seat; 13 - bearing; 14 - oil seal. DETAILED DESCRIPTION

[0022] The specific embodiments of the utility model will be further explained in detail below with reference to the drawings.

[0023] As Figures 1-3 shown, a kind of main shaft encoder independent installation device for sewing machine, including setting in the outer side of sewing machine main body 1 encoder main body 2 and setting in sewing machine main body 1 main shaft 3, the rear end of main shaft 3 is connected with the motor 4 for driving its rotation, the one end of motor output shaft is connected with main shaft 3 by coupling, the other end of motor output shaft is usually equipped with cooling fan, the front end of main shaft 3 is equipped with magnetic steel 5, encoder main body 2 is located at the side close to magnetic steel 5, the magnetic encoder chip 6 for cooperation with magnetic steel 5 is set in the encoder main body 2, and the encoder main body 2 is detachably connected with sewing machine main body 1 by fastener.

[0024] The utility model can install encoder in any position away from motor by the independent design of encoder, and can detect the absolute angle position of magnetic steel 5 by cooperation with magnetic steel 5 installed on main shaft in sewing machine, to realize real-time control of motor by numerical control, compared with the integrated design of motor and encoder in prior art, the utility model can make encoder away from environment with more dust by separation of encoder and motor, and has dustproof, anti-interference effect, longer service life, simple installation and maintenance, and greatly reduces the use cost of equipment.

[0025] The front side of the sewing machine main body 1 is provided with a mounting hole, and a bearing end cover 8 is arranged in the mounting hole. A through hole 9 is formed in the bearing end cover 8 for the main shaft 3 to extend out, and the encoder main body 2 is mounted on the end face of the bearing end cover 8.

[0026] A dust-proof pad 10 is arranged between the encoder main body 2 and the bearing end cover 8 to improve the dust-proof effect and further prevent dust from entering the encoder main body.

[0027] An oil-proof pad 7 is arranged between the bearing end cover 8 and the sewing machine main body 1 to effectively prevent oil stains from flowing out of the mounting hole.

[0028] The model of the magnetic encoder chip 6 is MA600, the MA600 sensor is a precise and high-bandwidth magnetic angle sensor, which is used for detecting the absolute angle position of a permanent magnet, and the permanent magnet is usually a diameter-magnetized cylinder on a rotating shaft.

[0029] The front end of the main shaft 3 is provided with a threaded hole 11, a stainless steel magnet seat 12 is screwed in the threaded hole 11, and the magnet 5 is arranged in the stainless steel magnet seat 12.

[0030] The outer periphery of the main shaft 3 is provided with a bearing 13 between the mounting hole, and the outer periphery of the stainless steel magnet seat 12 is provided with an oil seal 14 between the bearing end cover 8, so that the sealing performance is further improved.

[0031] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above-mentioned embodiments, and the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A spindle encoder independent mounting device for a sewing machine, characterized by, The application relates to a sewing machine, which comprises an encoder main body (2) arranged outside a sewing machine main body (1) and a main shaft (3) arranged in the sewing machine main body (1), the rear end of the main shaft (3) is connected with a motor (4) for driving the rotation of the main shaft (3), the front end of the main shaft (3) is provided with a magnetic steel (5), the encoder main body (2) is arranged on the side close to the magnetic steel (5), a magnetic encoder chip (6) is arranged in the encoder main body (2) and matched with the magnetic steel (5), and the encoder main body (2) is detachably connected with the sewing machine main body (1) through fasteners.

2. The spindle encoder independent mounting device for a sewing machine according to claim 1, characterized in that: A mounting hole is formed in the front side of the sewing machine main body (1), a bearing end cover (8) is arranged at the mounting hole, a through hole (9) is formed in the bearing end cover (8) and used for the main shaft (3) to extend out, and the encoder main body (2) is arranged on the end surface of the bearing end cover (8).

3. The spindle encoder independent mounting device for a sewing machine according to claim 2, characterized in that: A dustproof pad (10) is arranged between the encoder main body (2) and the bearing end cover (8).

4. The spindle encoder independent mounting device for a sewing machine according to claim 2, characterized in that: An oilproof pad (7) is arranged between the bearing end cover (8) and the sewing machine main body (1).

5. The spindle encoder independent mounting device for a sewing machine according to claim 1 characterized in that: The model of the magnetic encoder chip (6) is MA600.

6. The spindle encoder independent mounting device for a sewing machine according to claim 1, characterized in that: A threaded hole (11) is formed in the front end of the main shaft (3), a stainless steel magnetic steel base (12) is screwed in the threaded hole (11), and the magnetic steel (5) is arranged in the stainless steel magnetic steel base (12).

7. The spindle encoder independent mounting device for a sewing machine according to claim 6, characterized in that: A bearing (13) is arranged between the outer periphery of the main shaft (3) and the mounting hole, and an oil seal (14) is arranged between the outer periphery of the stainless steel magnetic steel base (12) and the bearing end cover (8).

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