CN109778450B

CN109778450B - Electric air suction cylinder device of sewing machine

Info

Publication number: CN109778450B
Application number: CN201910204579.6A
Authority: CN
Inventors: 万义明; 林晓晓; 洪志敏
Original assignee: Jack Sewing Machine Co Ltd
Current assignee: Jack Technology Co Ltd
Priority date: 2019-03-18
Filing date: 2019-03-18
Publication date: 2021-09-14
Anticipated expiration: 2039-03-18
Also published as: CN109778450A

Abstract

The invention provides an electric air suction cylinder device of a sewing machine, and belongs to the technical field of sewing machines. It has solved the current not good problem of electronic draft fan device to inhaling fan motor radiating effect. This electronic aspiration channel device is including inside barrel and the upper cover assembly that has the cavity, the upper cover assembly includes the upper cover plate, filter screen panel and driver assembly, be equipped with the straw with above-mentioned cavity intercommunication on the upper cover plate, the driver assembly includes the motor cabinet, motor body, first impeller and second impeller, the motor cabinet has the first cavity and the second cavity that separate each other and do not communicate, it has the first air inlet with above-mentioned first cavity intercommunication to open on the motor cabinet, first gas outlet and with second air inlet and the second gas outlet of second cavity intercommunication, first impeller and second impeller are located above-mentioned first cavity and second cavity respectively. The electric air suction cylinder device has the advantages of good heat dissipation effect and good noise reduction effect.

Description

Electric air suction cylinder device of sewing machine

Technical Field

The invention belongs to the technical field of sewing machines, and relates to an electric air suction cylinder device of a sewing machine.

Background

The air suction device is one of the most important additional devices in the sewing machine and is used for collecting impurities such as thread ends, broken cloth and the like. Currently, air suction devices fall into two categories: the pneumatic air suction device is matched with an external air source, and the electric air suction device is driven by a motor. The pneumatic air suction device has relatively complex structure and installation, higher cost and larger influence on the suction force by a factory air source. The existing electric air suction device has a relatively simple structure, the air suction mode is vertical suction, the suction force is small, the air discharge capacity is small, the temperature of the motor is increased, and the suction efficiency is low.

Therefore, the chinese patent discloses an air suction structure and an air suction method of an air suction device for a sewing machine [ application publication number: CN105544105A ], including the dustbin of storage waste material thing, be equipped with air intake and inlet scoop on the top cap of dustbin, the inlet scoop is communicated with air suction motor, is equipped with the spiral air suction channel who is communicated with the inlet scoop in the dustbin. It adopts the spiral passageway that induced drafts to make the dustbin form the spiral air current under the suction of the motor that induced drafts, and then generates powerful negative pressure region, makes the air intake department of dustbin have very strong suction, under the unchangeable condition of motor power that induced drafts, reaches the strongest effect of induced drafting.

In the air suction structure, the sewing machine works while the air suction motor also works or the air suction barrel works all the time after starting, but the effective working time of the air suction motor is after trimming or cutting cloth, if the air suction motor works all the time, continuous air suction can be caused, the noise generated by the continuous running of the motor is large, the electric energy consumption and the heat productivity are large, and the long-time running causes the problems of short service life of the air suction motor and the like; meanwhile, the dustbin inhales air for a long time, and can cause blockage of filter parts such as an air suction filter screen, the air resistance of air flowing into the dustbin becomes large, the temperature of the motor rises, and then the defects of instability of suction force, acceleration of filter screen replacement frequency, high maintenance cost and the like exist, so that the dustbin cannot meet the use requirement.

In order to solve the problems, the Chinese patent discloses an electric air suction device of a sewing machine (application publication No. CN 107513818A), which comprises a cylinder body and a sealing cover, wherein the cylinder body is internally provided with a cavity, the sealing cover is arranged at the top of the cylinder body and is used for sealing the cavity, the sealing cover is provided with an air suction port and an interface which are respectively communicated with the cavity, the air suction port is provided with an air suction motor and a filter screen, the interface is connected with a suction pipe for sucking thread ends, and the electric air suction device is characterized by further comprising a control module, wherein the control module is used for controlling the air suction motor to enter a working state from an initial state when the thread trimming mechanism acts, and controlling the air suction motor to recover to the initial state from the working state after the thread trimming mechanism acts; wherein, the initial state is that the air suction motor is in a standby state or a low-power operation state; the working state is that the air suction motor is in a high-speed running state with normal suction. According to the technical scheme, the control module is used for controlling the air suction motor to start when the air suction motor needs to start, and the air suction motor does not need to close when the air suction motor needs to work, so that the problems are well solved. There are still some problems: the air suction motor is installed in the sealing cover, although the air suction motor does not work all the time, a lot of heat can still be generated in the period of starting work, the space in the sealing cover is narrow and small, the sealing is realized, and the air is difficult to circulate, so that the heat dissipation effect is poor, and the local instant heating of the air suction motor can be caused to influence the service life of the air suction motor.

Disclosure of Invention

The invention aims to solve the problems in the prior art and provides an electric air suction cylinder device of a sewing machine.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a sewing machine electricity moves a device that induced drafts, has the barrel of cavity and arranges the upper cover assembly at barrel top in including inside, and the upper cover assembly includes that upper cover plate, filter screen panel and driver assembly upper cover plate are equipped with the straw that communicates with above-mentioned cavity, its characterized in that: the driver assembly includes motor cabinet, motor main part, first impeller and second impeller, the motor cabinet has first cavity and the second cavity that separates each other and do not communicate, open on the motor cabinet have with first air inlet, first gas outlet of above-mentioned first cavity intercommunication and with second air inlet and the second gas outlet of above-mentioned second cavity intercommunication, the second air inlet passes through above-mentioned filter screen panel and above-mentioned cavity intercommunication, motor main part is installed in first cavity and above-mentioned first impeller and second impeller link firmly respectively on motor output shaft both ends, first impeller and second impeller are located above-mentioned first cavity and second cavity respectively.

In the electric air suction cylinder device for the sewing machine, the upper cover assembly further comprises an upper cover, a main air inlet and a heat dissipation air outlet are formed in the upper cover, an installation cavity is formed between the upper cover and the upper cover plate, the first air inlet is communicated with the main air inlet through the installation cavity, the first air outlet and the second air outlet are connected with the heat dissipation air outlet, and the main air inlet is an air inlet grille.

In the electric air suction cylinder device for the sewing machine, the air suction cylinder device further comprises a controller electrically connected with the driver assembly, and the controller is a bare circuit board with a control chip, is installed in the installation cavity and is right opposite to the main air inlet.

In foretell sewing machine electricity section of thick bamboo device that induced drafts, the motor cabinet include motor cabinet body, heat dissipation air intake cover and second impeller cover, the annular groove that has the inner groovy on the motor cabinet body and encircle the inner groove outside including, the equal fixed mounting of above-mentioned heat dissipation air intake cover and second impeller cover is on above-mentioned motor cabinet body, heat dissipation air intake cover and above-mentioned inner groove have formed foretell first cavity each other, foretell second cavity has been formed each other to second impeller cover and above-mentioned annular groove, and above-mentioned first air inlet and second air inlet are seted up respectively on heat dissipation air intake cover and the second impeller cover.

In the electric air suction cylinder device of the sewing machine, the first air outlet is arranged on the heat dissipation air inlet cover or on the motor base body (61).

In the electric air suction cylinder device for the sewing machine, the motor body is fixedly connected with a first impeller cover, the first impeller is positioned in the first impeller cover, the outer side wall of the first impeller cover is closely connected with the heat dissipation air inlet cover through a sealing gasket, and openings matched with and communicated with the first air inlet are formed in the sealing gasket and the first impeller cover.

In the electric air suction cylinder device for the sewing machine, the driver assembly is arranged on the upper cover plate, and a shock pad is arranged between the driver assembly and the upper cover plate.

In the electric air suction cylinder device for the sewing machine, the first air outlet and the second air outlet are both semicircular, and the first air outlet and the second air outlet are mutually separated and not communicated but are arranged next to each other to form a cylindrical shape and are connected with the heat dissipation air outlet through a cylindrical pipeline.

In the electric air suction cylinder device for the sewing machine, the heat dissipation air outlet is connected with a silencing pipeline, and a silencer is installed on the silencing pipeline.

In the electric air suction cylinder device for the sewing machine, the heat dissipation air outlet comprises two air outlets, the two air outlets are respectively connected with the first air outlet and the second air outlet, the two air outlets are respectively connected with a silencing pipeline, and each silencing pipeline is provided with a silencer.

Compared with the prior art, the electric air suction cylinder device of the sewing machine has the following advantages:

1. the secondary heat dissipation mode dissipates heat generated by the work of the motor so as to improve the heat dissipation effect and prolong the service life of the motor;

2. the controller is arranged right opposite to the main air inlet and is an exposed circuit board with a control chip and electronic components, and airflow passes through the main air inlet, so that heat generated by the electronic components is well dissipated; meanwhile, the controller and the motor are independently and separately arranged, so that heat dissipation is facilitated;

3. the motor main body and the first impeller are arranged in the first cavity, the second impeller is arranged in the second cavity, and the first cavity and the second cavity are both closed cavities, so that the high-frequency noise reduction effect is better achieved, a large amount of noise generated when the motor rotor, the first impeller and the second impeller work is effectively reduced, and particularly the second cavity surrounds the periphery of the first cavity, so that the noise reduction effect on the motor rotor and the first impeller is better; simultaneously, the silencing pipeline and the silencer arranged on the radiating air outlet also have a good silencing effect, so that the purpose of reducing noise layer by layer is achieved, and noise pollution is avoided.

Drawings

Fig. 1 is a schematic perspective view of the electric suction tube device.

Fig. 2 is a plan view of the electric suction cylinder device.

Fig. 3 is a cross-sectional view at a-a in fig. 2.

Fig. 4 is an enlarged view at B in fig. 3.

In the figure, 1, a straw; 2. a barrel; 21. a cavity; 3. an upper cover; 31. a primary air inlet; 32. a heat dissipation air outlet; 4. an upper cover plate; 5. a mounting cavity; 6. a motor base; 61. a motor base body; 611. a second air outlet; 62. a heat dissipation air intake hood; 621. a first air inlet; 622. a first air outlet; 63. a second impeller cover; 631. a second air inlet; 7. a motor main body; 71. a stator; 72. a rotor; 8. a first impeller; 9. a first impeller cup; 10. a gasket; 11. a second impeller; 12. a first cavity; 13. a second cavity; 14. a filtering net cover; 15. a sound-deadening duct; 16. a muffler; 17. a controller; 18. a shock-absorbing pad.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in figures 1-3, the electric suction tube device of the sewing machine is used for collecting impurities such as thread ends, broken cloth and the like. Including controller 17, inside has the barrel 2 of cavity 21 and arranges the upper cover assembly at barrel 2 top in, the upper cover assembly includes upper cover 3, upper cover plate 4, filter screen panel 14 and driver assembly, it has heat dissipation gas outlet 32 and main air inlet 31 to be formed with installation cavity 5 and to open on upper cover 3 between upper cover 3 and the upper cover plate 4, the main air inlet 31 of this embodiment is the air inlet grille, air inlet grille intercommunication installation cavity 5 and outside air, air inlet grille has better filtering action, carry out certain filtration with the outside air and then get into in the section of thick bamboo device that induced drafts. Controller 17 is the naked circuit board that has control chip and electronic components, this controller 17 does not have the shell promptly, install in installation cavity 5 and just to main air inlet 31 setting, because intercommunication just can be formed with great air current each other between main air inlet 31 and the installation cavity 5, its air current can carry out better heat dissipation to electronic components and control chip on the circuit board, it just makes the radiating effect better to the mounted position of main air inlet 31 and with the independent mounting means of part of motor, thereby prolong electronic components and control chip's life, controller 17 is connected with the driver assembly realization electricity. The upper cover plate 4 is provided with a suction pipe 1 communicated with the cavity 21, and one end of the suction pipe 1 is connected to the machine needle and the needle plate and is used for collecting impurities such as thread ends, broken cloth and the like and collecting the impurities into the cavity 21. The heat dissipation air outlet 32 is connected with a silencing pipeline 15, a silencer 16 is mounted on the silencing pipeline 15, and the silencing pipeline 15 is communicated with the outside.

As shown in fig. 3 and 4, the drive assembly includes a motor base 6, a motor main body 7, a first impeller 8, and a second impeller 11. The motor base 6 comprises a motor base body 61, a heat dissipation air inlet cover 62 and a second impeller cover 63, wherein the motor base body 61 is made of a material with good heat conduction, such as aluminum material or copper material, and has good heat conduction performance. The motor cabinet body 61 is provided with an inner groove and an annular groove surrounding the outer side of the inner groove, the heat dissipation air inlet cover 62 and the second impeller cover 63 are fixedly arranged at two ends of the motor cabinet body 61, wherein the heat dissipation air inlet cover 62 and the inner groove form a first cavity 12, the second impeller cover 63 and the annular groove form a second cavity 13, and the first cavity 12 and the second cavity 13 are not communicated with each other in a separated mode. The motor body 7 comprises a rotor 72, a stator 71 and a rotating shaft, wherein the rotor 72 is fixedly connected to the rotating shaft, a gap is formed between the rotor 72 and the stator 71, and the first impeller 8 and the second impeller 11 are fixedly connected to two ends of the rotating shaft respectively. The stator 71 is fixedly connected with a first impeller cover 9, the first impeller 8 is positioned in the first impeller cover 9, the outer side wall of the first impeller cover 9 is closely connected with the heat dissipation air inlet cover 62 through a sealing gasket 10, the heat dissipation air inlet cover 62 is provided with a first air inlet 621 and a first air outlet 622, openings which are matched with and communicated with the first air inlet 621 are formed in the sealing gasket 10 and the first impeller cover 9, the installation cavity 5 is communicated with a gap between the rotor 72 and the stator 71 through the first air inlet 621 and the openings on the sealing gasket 10 and the first impeller cover 9 at a time, the gap between the rotor 72 and the stator 71 is communicated with the first cavity 12, and the first cavity 12 is communicated with the heat dissipation air outlet 32 through the first air outlet 622. Therefore, a first airflow heat dissipation channel is formed by the main air inlet 31, the installation cavity 5, the first air inlet 621 and the opening, the gap between the rotor 72 and the stator 71, the first cavity 12, the first air outlet 622, the heat dissipation air outlet 32 and the silencing pipe 15, so that heat generated by the operation of the first impeller 8, the rotor 72 and the stator 71 can be well dissipated. Meanwhile, the first impeller 8, the rotor 72 and the stator 71 are installed in the closed first cavity 12, and the first cavity 12 effectively eliminates noise generated by the operation of the first impeller 8, the rotor 72 and the stator 71 and prevents noise pollution.

The second impeller cover 63 is provided with a second air inlet 631, the second air inlet 631 is located right above the inner cavity of the filter screen cover 14, the second air inlet 631 is communicated with the cavity 21 of the cylinder 2 through the filter screen cover 14, and the second impeller 11 is located in the second cavity 13. The second air inlet 631 is communicated with the second cavity 13, a second air outlet 611 is formed on the motor base 6, and the second cavity 13 is communicated with the heat dissipation air outlet 32 through the second air outlet 611. Therefore, a second airflow heat dissipation channel is formed by the suction pipe 1, the cavity 21, the filter screen 14, the second air inlet 631, the second cavity 13, the second air outlet 611, the heat dissipation air outlet 32 and the silencing pipeline 15, so that heat generated during the operation of the second impeller 11 is dissipated in time, and meanwhile, the second cavity 13 has a good noise reduction effect on noise generated during the operation of the second impeller 11. Meanwhile, the second cavity 13 surrounds the outer wall of the first cavity 12, and the motor base body 61 has good thermal conductivity, so that the second airflow heat dissipation channel can perform secondary heat dissipation on heat generated by the working of the stator 71 and the rotor 72, thereby greatly improving the heat dissipation effect on the heat generated by the working of the stator 71 and the rotor 72. And stator 71, rotor 72 and first cavity 12 are located second cavity 13, and its second air has better amortization noise reduction effect to its whole to noise that produces to motor work carries out the secondary and falls and makes an uproar, has improved the noise reduction effect greatly, simultaneously, combines muffler 16 on amortization pipeline 15, thereby the noise of whole driver assembly during operation has wholly greatly reduced.

Further, the driver assembly is installed on upper cover plate 4, and is equipped with shock pad 18 between driver assembly and upper cover plate 4, and shock pad 18 has better buffering shock attenuation effect.

Further, the first air outlet 622 and the second air outlet 611 are both semicircular, and the first air outlet 622 and the second air outlet 611 are separated from each other, are not communicated, but are arranged next to each other to form a cylinder shape, and are connected with the heat dissipation air outlet 32 through a cylinder-shaped pipeline. As another scheme, the heat dissipation air outlet 32 may also include two air outlets, the two air outlets are respectively connected to the first air outlet 622 and the second air outlet 611, the two air outlets are respectively connected to the silencing pipes 15, and each silencing pipe 15 is provided with a silencer 16.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides a sewing machine electricity is moved and is induced drafted wound packages and put, includes that inside has barrel (2) of cavity (21) and the upper cover assembly of arranging barrel (2) top in, and the upper cover assembly includes upper cover plate (4), filters screen panel (14) and driver assembly, is equipped with straw (1) with above-mentioned cavity (21) intercommunication on upper cover plate (4), its characterized in that: the driver assembly comprises a motor base (6), a motor main body (7), a first impeller (8) and a second impeller (11), the motor base (6) is provided with a first cavity (12) and a second cavity (13) which are separated from each other and are not communicated, the motor base (6) is provided with a first air inlet (621) and a first air outlet (622) which are communicated with the first cavity (12) and a second air inlet (631) and a second air outlet (611) which are communicated with the second cavity (13), the second air inlet (631) is communicated with the cavity (21) through the filter screen cover (14), the motor main body (7) is arranged in the first cavity (12), the first impeller (8) and the second impeller (11) are respectively and fixedly connected with the two ends of the motor output shaft, the first impeller (8) and the second impeller (11) are respectively positioned in the first cavity (12) and the second cavity (13); motor cabinet (6) including motor cabinet body (61), heat dissipation air inlet cover (62) and second impeller cover (63), the annular groove that has the inner groovy and encircles in the inner groovy outside on motor cabinet body (61), above-mentioned heat dissipation air inlet cover (62) and the equal fixed mounting of second impeller cover (63) are on above-mentioned motor cabinet body (61), heat dissipation air inlet cover (62) and above-mentioned inner groove have formed foretell first cavity (12) each other, foretell second cavity (13) have been formed each other to second impeller cover (63) and above-mentioned annular groove, and above-mentioned first air inlet (621) and second air inlet (631) are seted up respectively on heat dissipation air inlet cover (62) and second impeller cover (63).

2. The electric air suction cylinder device for the sewing machine according to claim 1, characterized in that the upper cover assembly further comprises an upper cover (3), the upper cover (3) is provided with a main air inlet (31) and a heat dissipation air outlet (32), a mounting cavity (5) is formed between the upper cover (3) and the upper cover plate (4), the first air inlet (621) is communicated with the main air inlet (31) through the mounting cavity (5), the first air outlet (622) and the second air outlet (611) are connected with the heat dissipation air outlet (32), and the main air inlet (31) is an air inlet grille.

3. The electric suction cylinder device for sewing machine according to claim 2, characterized in that it further comprises a controller (17) electrically connected to said actuator assembly, said controller (17) being a bare circuit board with control chip and mounted in said mounting cavity (5) and facing said main air inlet (31).

4. The electric suction cylinder device for sewing machine according to claim 3, characterized in that said first air outlet (622) is provided on said heat dissipation air intake cover (62) or on the motor base body (61).

5. The electric suction cylinder device of the sewing machine according to claim 4, characterized in that the motor body (7) is further fixedly connected with a first impeller cover (9), the first impeller (8) is positioned in the first impeller cover (9), the outer side wall of the first impeller cover (9) is closely connected with the heat dissipation air inlet cover (62) through a gasket (10), and the gasket (10) and the first impeller cover (9) are respectively provided with an opening which is matched and communicated with the first air inlet (621).

6. An electric suction cylinder device for sewing machines, as in claim 1, characterized in that said actuator assembly is mounted on said upper cover plate (4) and in that between the actuator assembly and the upper cover plate (4) is provided a shock-absorbing pad (18).

7. The electric suction cylinder device for sewing machine according to claim 5, wherein the first air outlet (622) and the second air outlet (611) are both semicircular, and the first air outlet (622) and the second air outlet (611) are separated from each other and are not communicated but are arranged next to each other to form a cylinder shape and are connected with the heat dissipation air outlet (32) through a cylinder-shaped pipeline.

8. The electric suction cylinder device for sewing machine according to claim 7, characterized in that the heat dissipation air outlet (32) is connected with a silencing pipe (15), and the silencing pipe (15) is provided with a silencer (16).

9. The electric suction cylinder device for sewing machine according to claim 7, wherein said heat dissipating air outlet (32) comprises two air outlets, said two air outlets are respectively connected to said first air outlet (622) and said second air outlet (611), said two air outlets are respectively connected to a silencing duct (15), and each silencing duct (15) is provided with a silencer (16).