CN215404933U

CN215404933U - Rotating head, lower machine head and sewing machine

Info

Publication number: CN215404933U
Application number: CN202121665946.1U
Authority: CN
Inventors: 张章生
Original assignee: Sichuan Zhongfeng Heavy Industry Co ltd
Current assignee: Sichuan Zhongfeng Heavy Industry Co ltd
Priority date: 2021-07-21
Filing date: 2021-07-21
Publication date: 2022-01-04
Anticipated expiration: 2031-07-21

Abstract

The utility model relates to a rotating head, a lower machine head and a sewing machine, wherein the rotating head comprises a base body for bearing, a rotating shuttle mechanism and a thread cutting mechanism, and is characterized in that the rotating shuttle mechanism comprises a first motor and a rotating shuttle shaft, the thread cutting mechanism comprises a second motor and a transmission shaft, the rotating shuttle shaft and the transmission shaft are respectively rotatably arranged on the base body, the first motor and the second motor are arranged on the base body side by side and are positioned below the rotating shuttle shaft and the transmission shaft, the first motor is in transmission connection with the rotating shuttle shaft through a first transmission mechanism, and the second motor is in transmission connection with the transmission shaft through a second transmission mechanism; the rotating head provided by the utility model has the advantages of simpler structure, more reasonable layout, more regular whole rotating head and smaller volume, can effectively reduce the rotational inertia, is more energy-saving, and is more favorable for heat dissipation, thereby effectively solving the defects in the prior art.

Description

Rotating head, lower machine head and sewing machine

Technical Field

The utility model relates to the technical field of sewing equipment, in particular to a rotating head, a lower machine head and a sewing machine.

Background

The sewing machine is a commonly used sewing device, and is widely applied in the textile industry, and the types of the sewing machine are various, for example, a quilting machine, a computer sewing machine with a machine head capable of rotating 360 degrees (or referred to as a 360-degree rotation perfect stitch sewing machine, a computer pattern template sewing machine, etc., but the sewing machine with various structures usually comprises an upper machine head, a lower machine head matched with the upper machine head and a sewing platform for flatly placing sewing materials, wherein the upper machine head is a main part of the sewing machine and usually comprises four mechanisms of material punching, thread hooking, thread taking and feeding, and auxiliary mechanisms of winding, material pressing, tooth falling, etc., the upper machine head is usually arranged above the sewing platform, the lower machine head usually comprises a rotating shuttle mechanism and a thread cutting mechanism, the rotating shuttle mechanism is usually arranged below the sewing platform and corresponds to the position of the upper machine head, the rotating shuttle mechanism is matched with the upper machine head (specifically matched with a machine needle of the upper machine head), to smoothly complete sewing work, and the thread cutting mechanism is used for realizing thread cutting function.

In the prior art, for a 360-rotatable lower handpiece, the lower handpiece generally includes a rotating head (or called a rotating seat) and a fixed seat, the rotating head is rotatably mounted on the fixed seat and is driven by a motor, the fixed seat mainly plays a role in supporting the rotating head and realizing motion separation, and both a rotating shuttle mechanism and a thread cutting mechanism are mounted on a seat body (or called a housing and mainly plays a supporting role) of the rotating head; because the rotating head need rotate usually with eedle matched with in-process, the internal layout structure of rotating head can influence the inertia of rotating head, and inertia directly influences the power take off of motor, however, the overall arrangement of current rotating head is not reasonable enough, and on the one hand, the inertia that leads to current rotating head is bigger, can consume more power, is unfavorable for energy-conservation, and on the other hand, the volume that leads to whole rotating head is great, and is irregular, is unfavorable for the miniaturization of whole rotating head, awaits urgently and solves.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that the existing rotating head is not reasonable enough in layout, so that the rotating inertia of the rotating head is larger, the rotating head is not energy-saving, and the rotating head is larger in size and irregular, and provides a rotating head with a more reasonable layout, which is beneficial to the fact that the whole rotating head is more regular and smaller in size, can effectively reduce the rotating inertia, is more energy-saving, and has the main conception that:

a rotating head comprises a base body for bearing, a rotating shuttle mechanism and a thread cutting mechanism, wherein the rotating shuttle mechanism comprises a first motor and a rotating shuttle shaft, the thread cutting mechanism comprises a second motor and a transmission shaft, wherein,

the rotating shuttle shaft and the transmission shaft are respectively and rotatably arranged on the seat body, the first motor and the second motor are arranged on the seat body side by side and are positioned below the rotating shuttle shaft and the transmission shaft,

the first motor is in transmission connection with the rotating shuttle shaft through a first transmission mechanism, and the second motor is in transmission connection with the transmission shaft through a second transmission mechanism. In the scheme, the rotating shuttle mechanism and the thread cutting mechanism are independently driven by the first motor and the second motor respectively, so that the structure of the whole rotating head can be simplified, and the rotating head is more compact in structure and smaller in size; the first motor and the second motor are arranged on the base body side by side, so that the mounting positions of the first motor and the second motor are enabled to be closer to the rotation center of the rotating head, the weights of the first motor and the second motor are enabled to be distributed more uniformly along the circumferential direction of the rotation center of the rotating head, the rotational inertia is reduced, and more energy is saved; in addition, the first motor and the second motor are arranged side by side, so that the first motor and the second motor are beneficial to carrying out centralized heat dissipation; and arrange first motor and second motor in the below of rotating shuttle axle and transmission shaft, be favorable to reducing the focus position of whole rotating head, the stable drive rotating head of the motor of being more convenient for is rotatory, compares in current rotating head, and the structure of this rotating head is simplified more, the overall arrangement is more reasonable, more is favorable to energy-conservation, heat dissipation and miniaturization.

In order to facilitate the installation of the first motor and the second motor, further, the base is configured with an internal cavity, the internal cavity penetrates through the front end and/or the rear end of the base, and the central axis of rotation of the base penetrates through the internal cavity; the first motor and the second motor are respectively and fixedly arranged in the inner cavity. Through constructing inside cavity in the pedestal to construct inside cavity in the position department of the centre of rotation of pedestal, not only can provide the place for the installation of first motor and second motor, the assembly of the first motor and second motor of being convenient for, moreover can be convenient assemble first motor and second motor to the position department of the centre of rotation that is close to the pedestal, be favorable to the mass distribution of whole rotating head more even, be favorable to reducing inertia, more energy-conservation.

In order to ensure that the two first motors and the two second motors which are arranged in the internal cavity are not mutually influenced, the motor further comprises an isolation component which is arranged in the internal cavity and divides the internal cavity into two chambers; the first motor and the second motor are accommodated in the two chambers respectively. So as to hold first motor and second motor respectively, on the one hand for the produced heat of two motors can outwards flow along the cavity, reaches the radiating purpose respectively, and on the other hand can prevent to take place heat transfer between two motors as far as possible, and especially adapted first motor continuously works and calorific capacity is big, and the second motor intermittent type nature work and the occasion that calorific capacity is little.

In order to form the internal cavity, preferably, the base body is configured with a collection table for receiving lubricating oil, an upward-protruding mounting frame is configured above the collection table, and the rotating shuttle shaft and the transmission shaft are respectively rotatably mounted on the base body;

a connector matched with the fixed seat is constructed below the collecting table, the connector is connected with the collecting table through two side parts, and the connector, the side parts and the collecting table jointly enclose the inner cavity;

the connector is constructed with a central hole, and the central hole is communicated with the inner cavity. In the scheme, the internal cavity is constructed, so that the motor is convenient to mount and radiate; through the structure connector, be convenient for install this roating seat in the fixing base of below, through the structure centre bore, on the one hand, make inside cavity can be linked together with the fixing base to threading, arrangement drainage tube etc. on the other hand makes the inside of aircraft nose down can communicate each other, is favorable to dispelling the heat to the inside of whole aircraft nose down.

In order to facilitate connection of the fixing seat, the connector is further configured with a plurality of connecting holes.

In order to facilitate the drainage of leaked lubricating oil, further, the supporting platform on one side of the mounting frame is provided with an oil leakage hole.

For separating first motor and second motor, preferably, still include isolation parts, isolation parts set up in the inside cavity to separate inside cavity for two cavities, and isolation parts's upper end and lower extreme are fixed in respectively collect platform and connector, and first motor and second motor hold respectively in two in the cavity.

To facilitate the installation of the rotating shuttle shaft, it is preferable that the mounting bracket is configured with a first mounting hole for the installed rotating shuttle shaft.

To facilitate mounting of the drive shaft, it is preferable that the mounting bracket is configured with a second mounting hole for mounting the drive shaft.

In order to solve the problem of being convenient for install and dismantle, further, still include the installation component, first motor and second motor install respectively in the installation component, installation component detachable install in the rear end of pedestal, and correspond the inside cavity. In this scheme, through installing first motor and second motor detachable in installation component, both can solve the installation and the fixed problem of motor, can make installation component and motor inseparable link together again, and installation component can detachably install in the one end of pedestal to can solve the installation problem of first motor and second motor.

Further, the mounting members are respectively configured with a first fitting hole for passing through an output shaft of the first motor and a second fitting hole for passing through an output shaft of the second motor.

Preferably, the mounting member is a mounting plate or a heat sink. Especially when the mounting component is the fin, because first motor and second motor respectively with the fin close connection together for the produced heat of first motor and second motor can the high-efficient transfer to the fin, and distribute away via the fin, the fin can play heat absorption, heat conduction, radiating effect, is favorable to first motor and second motor to realize high-efficient heat dissipation.

Preferably, the first transmission mechanism is one or a combination of two of a belt transmission mechanism and a gear transmission mechanism;

and/or the second transmission mechanism is one or the combination of two of a belt transmission mechanism and a gear transmission mechanism.

The air conditioner further comprises a rear cover, wherein the rear cover is provided with a plurality of first air openings, and the rear cover is detachably arranged on the seat body and covers the rear end of the seat body. By arranging the rear cover and covering the rear end of the seat body by the rear cover, on one hand, the dustproof and waterproof effect can be achieved on the rear side of the seat body, and on the other hand, the first transmission mechanism and the second transmission mechanism which are arranged at the rear end of the seat body can be covered to achieve the effect of isolation protection, so that the safety is improved; in addition, a plurality of first air openings are formed in the rear cover, so that the first air openings can be communicated with the outside, and the first air openings can be communicated with the internal cavity, so that the internal cavity in the seat body can be communicated with the outside through the first air openings, heat dissipation of the first motor, the second motor, the seat body and the like in the rotating head is facilitated, and the problem of overhigh temperature can be effectively prevented.

Preferably, the rear cover is mounted to the seat body by bolts or screws.

The air conditioner further comprises a front cover, wherein the front cover is provided with a plurality of second air openings, and the front cover is detachably arranged at the front end of the seat body and seals the inner cavity. By arranging the front cover and covering the front end of the seat body by the front cover, on one hand, the dustproof and waterproof effect can be achieved at the front end of the seat body, and especially, lubricating oil leaked above can be prevented from entering the seat body; on the other hand, the first motor, the second motor, the lead, the joint and the like arranged on the seat body can be covered, so that the isolation protection effect is realized, and the safety is improved; in addition, the plurality of second air ports are formed in the front cover, so that the second air ports can be communicated with the outside, and the second air ports are communicated with the internal cavity, so that the internal cavity in the seat body can be communicated with the outside through the second air ports, the heat dissipation of the rotating head is facilitated, and the problem of overhigh temperature can be effectively prevented; in addition, can also form the cooperation with first wind gap through the second wind gap, be favorable to realizing better radiating effect.

A lower head of a sewing machine includes the rotating head.

In order to solve the problem that the rotating head can rotate 360 to match the upper machine head and realize perfect stitches, the utility model further comprises a fixed seat, the fixed seat comprises a fixed installation part and a connecting part which is matched with the seat body and can be rotationally restricted on the fixed installation part,

the base body is detachably mounted on the connecting portion. The rotating head has a degree of freedom of rotation relative to the fixed seat so as to adjust the direction of the rotating shuttle, and perfect stitches can be realized by the cooperation of the rotating shuttle and the machine needle.

A sewing machine includes the rotary head or the lower head.

Compared with the prior art, the rotary head, the lower machine head and the sewing machine provided by the utility model have the advantages that the structure is simplified, the layout is reasonable, the whole rotary head is more regular and the volume is smaller, the rotary inertia can be effectively reduced, the energy is saved, the heat dissipation is facilitated, and the defects in the prior art can be effectively overcome.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic view of the first motor and the second motor mounted to the mounting member.

Fig. 2 is a schematic structural view of a rear end of a base body of the rotating head according to embodiment 1 of the present invention.

Fig. 3 is a schematic structural view of a front end of a base in a rotating head according to embodiment 1 of the present invention.

Fig. 4 is a front view of fig. 2, with the rotating shuttle shaft assembled.

Fig. 5 is a cross-sectional view at a-a of fig. 4.

Fig. 6 is a schematic structural diagram of a rotary head according to embodiment 1 of the present invention.

Fig. 7 is a schematic structural view of a mounting member provided in embodiment 2 of the present invention.

Fig. 8 is a schematic structural diagram of a rotary head according to embodiment 2 of the present invention.

Fig. 9 is a schematic structural diagram of a rear end of a rotary head according to embodiment 3 of the present invention.

Fig. 10 is a schematic structural diagram of a rotary head according to embodiment 3 of the present invention.

Fig. 11 is a schematic cross-sectional view of a rotary head provided in embodiment 3 of the present invention.

Fig. 12 is a schematic structural view of a lower handpiece provided in embodiment 4 of the present invention.

Description of the drawings

The rotary head 100, the base 101, the collecting platform 102, the oil leakage hole 103, the connector 104, the central hole 105, the connecting hole 106, the side portion 107, the internal cavity 108, the mounting bracket 109, the first mounting hole 110, the second mounting hole 111, the isolation component 112, the threaded hole 113, the front end 114, the rear end 115, and the draft tube 116

Rotating shuttle mechanism 200, first motor 201, output shaft 202 of first motor, rotating shuttle shaft 203 and rotating shuttle 204

Tangent mechanism 300, second motor 301, output shaft 302 of second motor, transmission shaft 303

Driving pulley 401, driven pulley 402, and transmission belt 403

Mounting member 500, first fitting hole 501, second fitting hole 502, first through hole 503, second through hole 504, base plate 505, and heat radiating fin 506

Rear cover 600, first tuyere 601 and third through hole 602

Front cover 700, second air port 701 and fourth through hole 702

Fixing base 800, connecting portion 801, fixed installation portion 802, bearing 803.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

Example 1

Referring to fig. 2-5, the present embodiment provides a rotary head, which includes a base 101 (or called a casing) for carrying a motor, a rotating shuttle mechanism 200, a thread cutting mechanism 300, a lubricant oil, and the like.

In this embodiment, the seat body 101 may be an integrally formed component, for example, the seat body 101 may be an aluminum alloy seat body 101, which not only has sufficient rigidity for bearing but also has good heat conductivity; so that the heat generated by the motor can be transferred outwards through the base body 101 to achieve the effect of heat dissipation.

The rotary head 100 further comprises a rotating shuttle mechanism 200, wherein the rotating shuttle mechanism 200 comprises a first motor 201, a rotating shuttle shaft 203 and a rotating shuttle 204, as shown in fig. 2-6, the rotating shuttle shaft 203 is rotatably mounted on the base 101, for example, the rotating shuttle shaft 203 can be mounted on the base 101 through a bearing; the rotating shuttle 204 is usually installed at one end of the rotating shuttle shaft 203, and the first motor 201 can be usually in transmission connection with the rotating shuttle shaft 203 through a first transmission mechanism, which can be one or a combination of a belt transmission mechanism and a gear transmission mechanism; for example, as shown in fig. 6, the first transmission mechanism is a belt transmission mechanism including a driving pulley 401 mounted on the output shaft 202 of the first motor, a driven pulley 402 mounted on the rotating shuttle shaft 203, and a transmission belt 403 tensioned to the driving pulley 401 and the driven pulley 402, so that the rotating shuttle shaft 203 is driven to rotate by the first motor 201.

The present rotary head 100 further comprises a wire cutting mechanism 300, wherein the wire cutting mechanism 300 comprises a second motor 301 and a transmission shaft 303, as shown in fig. 6, the transmission shaft 303 is rotatably mounted on the base 101, for example, the transmission shaft 303 can be mounted on the base 101 through a bearing, the transmission shaft 303 is usually in transmission connection with a first cutter and a second cutter which can be matched with each other, and the second motor 301 can be in transmission connection with the transmission shaft 303 through a second transmission mechanism, the second transmission mechanism is one or a combination of a belt transmission mechanism and a gear transmission mechanism, for example, as shown in fig. 6, the second transmission mechanism is a belt transmission mechanism, the belt transmission mechanism comprises a driving pulley 401 mounted on an output shaft 302 of the second motor, a driven pulley 402 mounted on the transmission shaft 303, and a transmission belt 403 tensioned on the driving pulley 401 and the driven pulley 402, so as to drive the transmission shaft 303 to rotate by using the second motor 301, and then the first cutter and the second cutter can be driven to open/close so as to achieve the purpose of cutting when the first cutter and the second cutter are closed.

As shown in fig. 6, in this embodiment, the first motor 201 and the second motor 301 are installed side by side on the base 101 and are located below the rotating shuttle shaft 203 and the transmission shaft 303, as shown in fig. 6, specifically, in this embodiment, the rotating shuttle mechanism 200 and the thread cutting mechanism 300 are independently driven by the first motor 201 and the second motor 301 respectively, which can simplify the structure of the whole rotating head 100, and is beneficial to making the structure of the rotating head 100 more compact and smaller; by arranging the first motor 201 and the second motor 301 in the base 101 side by side, the installation positions of the first motor 201 and the second motor 301 are facilitated to be closer to the rotation center of the rotary head 100, and the weights of the first motor 201 and the second motor 301 are more uniformly distributed along the circumferential direction of the rotation center of the rotary head 100, so that the rotational inertia is reduced and the energy is saved; in addition, by arranging the first motor 201 and the second motor 301 side by side, the first motor 201 and the second motor 301 are also beneficial to carrying out centralized heat dissipation; the first motor 201 and the second motor 301 are disposed below the rotating shuttle shaft 203 and the transmission shaft 303, which is beneficial to lowering the center of gravity of the whole rotating head 100 and is more convenient for the motor to stably drive the rotating head 100 to rotate.

To facilitate the installation of the first motor 201 and the second motor 301, in a further aspect, the housing 101 is configured with an internal cavity 108, and the internal cavity 108 extends through at least the front end 114 or the rear end 115 of the housing 101, for example, in this embodiment, the internal cavity 108 extends through both the front end 114 and the rear end 115 of the housing 101, as shown in fig. 2-5;

the rotation central axis of the base body 101 penetrates through the inner cavity 108, so that the inner cavity 108 is located at the rotation center of the base body 101, the first motor 201 and the second motor 301 are respectively and fixedly installed in the inner cavity 108, and by constructing the inner cavity 108 in the base body 101, not only can a place be provided for the installation of the first motor 201 and the second motor 301, which is convenient for the assembly of the first motor 201 and the second motor 301, but also the first motor 201 and the second motor 301 can be conveniently assembled at the position close to the rotation center of the base body 101, which is beneficial for the more uniform mass distribution of the whole rotating head 100, the reduction of the rotational inertia and the energy conservation.

Since the first motor 201 and the second motor 301 are installed in the internal cavity 108, and the first motor 201 and the second motor 301 are installed side by side, in one embodiment, the first motor 201 and the second motor 301 are both located in the internal cavity 108 without a partition therebetween; in another embodiment, in order to prevent the two first motors 201 and the second motor 301 installed in the internal cavity 108 from affecting each other, the rotary head 100 further includes a separating member 112, the separating member 112 is disposed in the internal cavity 108 and separates the internal cavity 108 into two chambers, as shown in fig. 4 and 5, at this time, the first motor 201 and the second motor 301 are respectively accommodated in the two chambers, so that heat generated by the two motors can flow outwards along the chambers to achieve the purpose of respectively dissipating heat, and on the other hand, heat transfer between the two motors can be prevented as much as possible, which is particularly suitable for occasions where the first motor 201 continuously works and generates a large amount of heat, and the second motor 301 intermittently works and generates a small amount of heat.

In practice, the isolation member 112 may preferably adopt a plate-like structure or a similar plate-like structure.

The base body 101 has various embodiments, the specific shape of the base body 101 is not limited in this embodiment, but for convenience of description, in a preferred embodiment provided in this embodiment, the base body 101 is configured with a collection table 102 for receiving lubricating oil, as shown in fig. 2-6, the collection table 102 can divide the base body 101 into an upper layer and a lower layer, a mounting frame 109 protruding upwards is configured above the collection table 102, a support platform on one side of the mounting frame 109 is configured with an oil leakage hole 103, and the rotating shuttle 204 is located right above the rotating shuttle 204, as shown in fig. 2-6, so as to intercept and collect the lubricating oil leaked from the rotating shuttle 204 by the collection table 102, and guide the collected lubricating oil to a set position by using the oil leakage hole 103 in cooperation with a drainage tube 116 (the drainage tube 116 is communicated with the oil leakage hole 103); the rotating shuttle shaft 203 and the transmission shaft 303 are respectively rotatably arranged on the mounting rack 109; for the convenience of assembly, in a preferred embodiment, the mounting bracket 109 is respectively configured with a first mounting hole 110 for mounting the rotating shuttle shaft 203 and a second mounting hole 111 for mounting the driving shaft 303, as shown in fig. 2 to 6, so that the rotating shuttle shaft 203 and the driving shaft 303 can be respectively mounted above the collecting table 102;

as shown in fig. 2-6, a connector 104 adapted to the fixing base 800 is configured below the collecting table 102, so that the fixing base 800 of the lower handpiece is fixedly connected with the connector 104; for ease of assembly, the connection head 104 is configured with a plurality of connection holes 106, as shown in fig. 2-6, such that the connection head 104 may form a flange;

as shown in fig. 2-6, the connecting head 104 is connected to the collecting table 102 by two side portions 107, such that the connecting head 104, the side portions 107 and the collecting table 102 may together enclose the inner cavity 108 for accommodating and mounting the first motor 201 and the second motor 301;

in a more sophisticated solution, as shown in fig. 2-6, the connection head 104 is configured with a central hole 105, and the central hole 105 is communicated with the internal cavity 108, on one hand, the internal cavity 108 can be communicated with the fixed seat 800 for threading, arranging the drainage tube 116 and the like, and on the other hand, the interiors of the lower heads can be communicated with each other, which is beneficial to heat dissipation of the whole interior of the lower head.

In order to separate the internal cavity 108, in a more sophisticated scheme, the separating component 112 is disposed in the internal cavity 108, and the upper end and the lower end of the separating component 112 are respectively fixed to the collecting platform 102 and the connecting head 104, so that the internal cavity 108 can be separated into two chambers, and the first motor 201 and the second motor 301 can be respectively accommodated in the two chambers, as shown in fig. 4 and 5;

in specific implementation, the isolation component 112 may be installed on the base 101 by bolts, may also be welded to the base 101, and may also be integrally formed with the base 101, which is not described herein again.

In order to facilitate the mounting and dismounting of the first motor 201/the second motor 301, in a further aspect, the present rotary head 100 further includes a mounting part 500, as shown in fig. 1 and fig. 6, the first motor 201 and the second motor 301 may be respectively mounted to the mounting part 500, and the mounting part 500 is detachably mounted to the rear end 115 of the housing 101 and corresponds to the internal cavity 108, so that the first motor 201 and the second motor 301 can be just received in the internal cavity 108, which can solve the mounting and fixing problem of the motors, and can also enable the mounting part 500 to be tightly connected with the two motors, and the mounting part 500 can be detachably mounted to one end of the housing 101, thereby solving the mounting problem of the first motor 201 and the second motor 301.

In order to facilitate the connection of the first transmission mechanism and the second transmission mechanism, the mounting member 500 is respectively configured with a first adapting hole 501 and a second adapting hole 502, as shown in fig. 1 and 6, wherein the first adapting hole 501 is used for passing through the output shaft 202 of the first motor, and the second adapting hole 502 is used for passing through the output shaft 302 of the second motor, so that after the first motor 201 and the second motor 301 are respectively mounted on one side of the mounting member 500, the output shaft 202 of the first motor and the output shaft 302 of the second motor can respectively extend to the other side of the mounting member 500 through the mounting member 500 so as to respectively connect the first transmission mechanism and the second transmission mechanism.

In this embodiment, the mounting part 500 may preferably adopt a mounting plate, i.e. a plate-like structure, and to realize the detachable mounting of the mounting part 500, in one embodiment, as shown in fig. 1 and 6, the base 101 is configured with a plurality of threaded holes 113 (the threads may preferably be configured on the side portion 107), the mounting part 500 is configured with a plurality of first through holes 503 adapted to the respective threaded holes 113, so that the mounting part 500 can be fixedly mounted to the base 101 by bolts, and the mounting part 500 may be configured with a plurality of second through holes 504 adapted to the first motor 201 and the second motor 301, and the first motor 201 and the second motor 301 can be mounted to the mounting part 500 by bolts.

Example 2

In order to improve the heat dissipation effect of the first motor 201 and the second motor 301, the main difference between the present embodiment 2 and the above embodiment 1 is that the rotating head 100 provided by the present embodiment adopts a heat sink, as shown in fig. 7 and 8, the heat sink includes a base plate 505 and a plurality of heat dissipation fins 506 configured on one side of the base plate 505, the adaptive hole, the first through hole 503 and the second through hole 504 can be configured on the base plate 505, so that the base plate 505 of the heat sink can be mounted on the housing 101, and the first motor 201 and the second motor 301 can be mounted on the base plate 505 of the heat sink, as shown in fig. 7 and 8, since the first motor 201 and the second motor 301 are tightly connected with the heat sink, respectively, the heat generated by the first motor 201 and the second motor 301 can be efficiently transferred to the heat sink, and dissipated by the heat sink can function as a heat sink, The heat conduction and the heat dissipation function are beneficial to realizing efficient heat dissipation of the first motor 201 and the second motor 301.

Example 3

The main difference between the present embodiment 3 and the above embodiment 1 or 2 is that the present embodiment further includes a rear cover 600 and/or a front cover 700, wherein,

as shown in fig. 9-11, the rear cover 600 is configured with a plurality of first vents 601, the rear cover 600 is detachably mounted on the base 101 and covers the rear end 115 of the base 101, on one hand, the rear side of the base 101 can have dustproof and waterproof effects, and on the other hand, the first transmission mechanism and the second transmission mechanism mounted on the rear end 115 of the base 101 can be covered to have an isolation protection effect, which is beneficial to improving safety; in addition, the plurality of first air ports 601 are formed in the rear cover 600, so that the first air ports 601 can be communicated with the outside, and the first air ports 601 can be communicated with the internal cavity 108, so that the internal cavity 108 in the base body 101 can be communicated with the outside through the first air ports 601, heat dissipation of the first motor 201, the second motor 301, the base body 101 and the like in the rotating head 100 is facilitated, and the problem of over-high temperature can be effectively prevented.

In a preferred embodiment, the rear cover 600 may be mounted to the holder body 101 by bolts or screws, for example, the holder body 101 is configured with a plurality of threaded holes 113, as shown in fig. 9 to 11, and the rear cover 600 is configured with a plurality of third through holes 602 adapted to each of the threaded holes 113, so that the rear cover 600 can be detachably mounted by the bolts or screws.

In practical implementation, the number of the first tuyere 601 can be determined according to actual requirements, the first tuyere 601 can be respectively configured at the position corresponding to the inner cavity 108 so as to be matched with the inner cavity 108, and the first tuyere 601 can preferably adopt a round hole so as to facilitate the processing and forming of the first tuyere 601, and each first tuyere 601 can be configured on the rear cover 600 according to an array or an equilateral triangle, as shown in fig. 9-11.

Similarly, as shown in fig. 9-11, the front cover 700 is configured with a plurality of second air ports 701, the front cover 700 is detachably mounted on the front end 114 of the housing 101 and closes the internal cavity 108, i.e. closes the front end 114 of the internal cavity 108, and by providing the front cover 700, on one hand, dust-proof and water-proof effects can be achieved at the front end 114 of the housing 101, and especially, the lubricating oil leaked above can be prevented from entering the housing 101; on the other hand, the first motor 201, the second motor 301, the wires, the connectors and the like arranged on the base body 101 can be covered to play a role in isolation protection, so that the safety is improved; in addition, the plurality of second air ports 701 are formed in the front cover 700, so that the second air ports 701 can be communicated with the outside, and the second air ports 701 are communicated with the internal cavity 108, so that the internal cavity 108 in the base body 101 can be communicated with the outside through the second air ports 701, heat dissipation of the rotary head 100 is facilitated, and the problem of over-high temperature can be effectively prevented; in addition, the second air port 701 can be matched with the first air port 601, and a better heat dissipation effect can be achieved.

In a preferred embodiment, the front cover 700 may be mounted to the housing 101 by bolts or screws, for example, the side portions 107 of the housing 101 are respectively configured with a plurality of threaded holes 113, as shown in fig. 9-11, and the front cover 700 is configured with a plurality of fourth through holes 702 corresponding to the respective threaded holes 113, so that the front cover 700 can be detachably mounted by bolts or screws.

In specific implementation, the number of the second air ports 701 may be determined according to actual requirements, the second air ports 701 may be respectively configured at positions corresponding to the internal cavity 108 so as to be matched with the internal cavity 108, and the second air ports 701 may preferentially adopt strip-shaped holes, which may be linear strip-shaped holes or arc-shaped strip-shaped holes, as shown in fig. 10, each of the second air ports 701 may preferentially be arranged along a vertical direction or a horizontal direction, as shown in fig. 10.

Example 4

The present embodiment provides a lower head for a sewing machine including the rotary head 100 described in embodiment 1, embodiment 2, or embodiment 3.

In order to make the rotating head 100 rotatable 360 to fit the upper machine head and achieve perfect stitch, in a more sophisticated solution, the rotating head further comprises a fixing base 800, the fixing base 800 comprises a fixed mounting portion 802, a connecting portion 801 adapted to the base 101 and rotatably constrained to the fixed mounting portion 802 (for example, the connecting portion 801 may be mounted to the fixed mounting portion 802 through a bearing 803 so as to achieve separation of movement, as shown in fig. 12), and the base 101 is detachably mounted to the connecting portion 801 so as to be connected with the connecting portion 801 into a whole, so that the rotating head 100 has a degree of freedom to rotate relative to the fixed mounting portion 802 so as to adjust the orientation of the rotating shuttle 204, so that perfect stitch can be achieved by fitting the rotating shuttle 204 with the machine needle.

Example 5

The present embodiment provides a sewing machine including the rotary head 100 described in embodiment 1, embodiment 2, or embodiment 3;

or, the lower handpiece described in embodiment 4 is included, and in this case, the lower handpiece further includes a rack and a motor (i.e., an electric motor), the fixed mounting portion 802 is fixedly mounted on the rack, so that the whole lower handpiece is fixed and mounted, and the motor is used for driving the connecting portion 801 to rotate relative to the fixed mounting portion 802.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention.

Claims

1. A rotating head comprises a base body for bearing, a rotating shuttle mechanism and a thread cutting mechanism, and is characterized in that the rotating shuttle mechanism comprises a first motor and a rotating shuttle shaft, the thread cutting mechanism comprises a second motor and a transmission shaft, wherein,

the first motor is in transmission connection with the rotating shuttle shaft through a first transmission mechanism, and the second motor is in transmission connection with the transmission shaft through a second transmission mechanism.

2. The rotary head according to claim 1, wherein the housing is configured with an internal cavity and the internal cavity extends through a front end and/or a rear end of the housing, the central axis of rotation of the housing passing through the internal cavity;

the first motor and the second motor are respectively and fixedly arranged in the inner cavity.

3. The rotary head according to claim 2, further comprising a partition member disposed within the internal cavity and dividing the internal cavity into two chambers;

the first motor and the second motor are accommodated in the two chambers respectively.

4. The rotary head according to claim 2, wherein the base is configured with a collecting table for receiving the lubricating oil, a mounting frame protruding upward is configured above the collecting table, and the rotating shuttle shaft and the transmission shaft are respectively rotatably mounted on the base;

the connector is constructed with a central hole, and the central hole is communicated with the inner cavity.

5. The rotary head according to claim 4, wherein the connection head is configured with a plurality of connection holes;

and/or the supporting platform at one side of the mounting rack is provided with an oil leakage hole;

and/or, the device also comprises an isolation component, the isolation component is arranged in the internal cavity and divides the internal cavity into two chambers, the upper end and the lower end of the isolation component are respectively fixed on the collecting platform and the connector, and the first motor and the second motor are respectively accommodated in the two chambers;

and/or the mounting frame is provided with a first mounting hole for mounting the rotating shuttle shaft;

and/or the mounting bracket is configured with a second mounting hole for a mounted transmission shaft.

6. The rotary head according to any of claims 2-5, further comprising a mounting member, wherein the first motor and the second motor are respectively mounted to the mounting member, and the mounting member is detachably mounted to the rear end of the housing and corresponds to the inner cavity;

and/or the first transmission mechanism is one or the combination of two of a belt transmission mechanism and a gear transmission mechanism;

7. The rotary head according to claim 6, wherein the mounting member is configured with a first fitting hole for passing through an output shaft of a first motor and a second fitting hole for passing through an output shaft of a second motor, respectively;

and/or the mounting component is a mounting plate or a heat sink.

8. The rotary head according to any one of claims 2 to 5, further comprising a rear cover configured with a plurality of first vents, the rear cover being detachably mounted to the housing and covering a rear end of the housing;

and/or the presence of a gas in the gas,

the front cover is provided with a plurality of second air openings, and the front cover is detachably arranged at the front end of the seat body and seals the inner cavity.

9. A lower handpiece, characterized by comprising a rotating head according to any one of claims 1 to 8.

10. A sewing machine comprising a rotary head according to any one of claims 1 to 8 or a lower head according to claim 9.