CN213681214U - Rotating shuttle oil supply mechanism, lower machine head and sewing machine - Google Patents

Abstract

The utility model relates to a rotating shuttle fuel feeding mechanism, lower aircraft nose and sewing machine, rotating shuttle fuel feeding mechanism is including the rotating shuttle axle that is used for installing the rotating shuttle, the oil tank that is used for saving lubricating oil and the restraint part that is used for retraining the rotating shuttle axle, restraint part structure has the centre bore that is used for passing the rotating shuttle axle, and the side structure of restraint part have at least one with the intercommunicating pore that the centre bore is linked together, the intercommunicating pore with the oil tank is linked together, the rotating shuttle axle is constructed and is run through the inside oil duct of one end, and the side structure of rotating shuttle axle have at least one with the oil passing hole that the inside runner is linked together, the rotating shuttle axle housing is located restraint part to constitute the revolute pair with restraint part, and the rotation of passing the oil hole accessible rotating shuttle axle with the intercommunicating; the rotating shuttle oil supply mechanism not only can play a good lubricating role when the rotating shuttle rotates, but also can effectively prevent oil leakage when the rotating shuttle is static, thereby effectively solving the defects existing in the prior art.

Description

Rotating shuttle oil supply mechanism, lower machine head and sewing machine

Technical Field

The utility model relates to a sewing machine technical field, concretely relates to rotating shuttle fuel feeding mechanism, lower aircraft nose and sewing machine.

Background

Sewing machines are commonly used sewing machines, which generally make use of one or more sewing threads to form one or more stitches in the material to be sewn, to interlace or stitch together one or more layers of material; the sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitch is neat, beautiful, flat and firm, has high sewing speed and simple and convenient use, and is widely applied in the sewing industry.

At present, various types of sewing machines (for example, a computer sewing machine with a head capable of rotating 360 degrees (or a 360-degree-rotation perfect-stitch sewing machine, a computer pattern template sewing machine) are included), but the sewing machines with various structures generally include an upper head, a lower head matched with the upper head, and a sewing platform for flatly placing sewing materials, wherein the upper head is a main part of the sewing machine, and generally comprises four mechanisms of material puncturing, thread hooking, thread picking and feeding, and auxiliary mechanisms of thread winding, material pressing, tooth dropping and the like, and the upper head is generally arranged above the sewing platform; the lower head usually comprises a rotating shuttle mechanism, the rotating shuttle mechanism is usually arranged below the sewing platform and corresponds to the upper head, and the rotating shuttle mechanism is matched with the upper head (specifically matched with a needle of the upper head) to smoothly complete the sewing work

The rotating shuttle mechanism is an important component of a sewing machine, and in the prior art, the rotating shuttle mechanism generally comprises a motor, a rotating shuttle shaft and a rotating shuttle, wherein the rotating shuttle is fixed on the rotating shuttle shaft and is arranged at a position corresponding to a machine needle, the motor is used for driving the rotating shuttle shaft to rotate so as to drive the rotating shuttle to rotate, the rotating shuttle is matched with the vertical reciprocating motion of the machine needle through rotation so as to hook a thread and guide the thread to form a stitch, the rotating shuttle generally has a higher rotating speed because the vertical reciprocating motion of the machine needle is once and the rotating shuttle needs to rotate twice, and particularly in a high-speed sewing machine, the rotating shuttle has a higher rotating speed, so that oil needs to be supplied to the rotating shuttle so as to ensure the good working state of the sewing machine.

In the prior art, some oil supply methods are provided with a special oil pump to supply oil to the rotating shuttle so as to facilitate lubrication, but the oil supply method has more oil injection, not only pollutes sewing materials but also causes waste of lubricating oil, but also causes dust accumulation of the rotating shuttle due to viscosity of the oil to influence the working performance of the rotating shuttle; some oil supply devices realize oil supply by arranging a special oil spraying core, such as a rotating shuttle oil supply device disclosed by Chinese patent CN 202705692U, a rotating shuttle oil supply structure disclosed by Chinese patent CN 107201608B and the like, and have the problems of complex structure, high cost and the like; some shuttle rotating shafts are arranged and penetrate through the oil tank, so that part of the shuttle rotating shafts are soaked in the oil tank, the part of the shuttle rotating shafts are provided with oil passing holes, shaft sleeves are respectively arranged on two sides of the oil passing holes, one end of each shuttle rotating shaft is provided with an oil passage, and the oil passages are communicated with the oil passing holes; when the rotating shuttle shaft is in a static state, oil in the oil tank can continuously enter the oil duct through the oil passing hole, so that the oil leakage problem is caused, and the problem needs to be solved urgently.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to improve the fuel feeding project organization that exists among the prior art complicacy, lubricated poor and the serious scheduling problem of oil leak problem, provide a rotating shuttle fuel feeding mechanism for lubricated rotating shuttle, have characteristics such as compact structure, reasonable in design, with low costs, can not only play good lubricated effect when rotating the shuttle rotatory, can effectively prevent the oil leak when rotating the shuttle in addition static to can effectively solve the not enough of prior art existence, be particularly useful for.

The utility model adopts the technical proposal that:

the first aspect of the utility model is to solve the problems of complex structure, poor lubrication effect and serious oil leakage problem caused by unreasonable design of the existing oil supply, and provides a rotating shuttle oil supply mechanism, which comprises a rotating shuttle shaft for installing a rotating shuttle, an oil tank for storing lubricating oil and a restraining component for restraining the rotating shuttle shaft,

the restricting member is configured with a center hole for passing through the rotating shuttle shaft, and a side surface of the restricting member is configured with at least one communication hole communicating with the center hole, the communication hole communicating with the oil tank,

the rotating shuttle shaft is provided with an internal oil passage penetrating through one end, the side surface of the rotating shuttle shaft is provided with at least one oil passing hole communicated with the internal flow passage,

the rotating shuttle shaft is sleeved on the constraint part and forms a revolute pair with the constraint part, and the oil passing hole can be communicated with the communicating hole through the rotation of the rotating shuttle shaft. In this scheme, through setting up the oil tank, it is convenient to deposit lubricating oil, through setting up the restraint part, and make restraint part and rotating shuttle axle constitute the revolute pair, not only can restrain and support the rotating shuttle axle, it is convenient for the rotating shuttle axle to rotate under the drive of motor, reach the purpose of motion separation, and when the rotating shuttle axle rotates to the position presumed, the oil passing hole that constructs in the rotating shuttle axle can be linked together with the intercommunicating hole that constructs in the restraint part, make the lubricating oil that stores in the oil tank can be discharged via intercommunicating hole, oil passing hole and inside oil duct, and direct action on the rotating shuttle, thus reach the lubricated purpose, adopt such structural design, because can drive the synchronous rotation of oil passing hole when the rotating shuttle axle rotates, make oil passing hole and intercommunicating hole periodic intercommunication, because the inside oil duct is provided with in the rotating shuttle axle, form a cavity structure, thus can utilize the rotation (forming the negative pressure) of the rotating shuttle axle to squeeze the lubricating oil in the oil tank into inside The purpose of continuous and stable lubrication is achieved; when the rotating shuttle stops working, on one hand, the rotating shuttle shaft can stay at the position where the oil passing hole is not communicated with the communicating hole, so that oil leakage can be effectively prevented, and on the other hand, the inside of the oil tank can be kept in a vacuum state, and lubricating oil in the oil tank cannot flow out under the action of no external suction force, so that the oil leakage can be prevented; this scheme, not only simple structure, lubricated process produce oil and last, steady, can realize better lubricated effect, can effectively solve the problem of oil leak moreover.

Preferably, the restricting member is a sleeve or a sleeve. So as to form a moving pair with the rotating shuttle shaft.

In order to make the structure more compact, it is preferable that the restricting member is fixed to the oil tank. That is, the restricting member may be directly provided to the oil tank so that the restricting member and the oil tank may communicate with each other without an additional pipe.

In order to solve the problem of installation and sealing of the restricting component in the second aspect of the present invention, preferably, the oil tank is configured with an installation hole for installing the restricting component, and the installation hole is communicated with the internal oil storage cavity of the oil tank,

the restraint component is arranged in the mounting hole, and two ends of the restraint component are respectively provided with a sealing component. The installation hole is arranged, so that the installation of the restraint part is facilitated, and the sealing parts are conveniently utilized to seal the two ends of the restraint part, so that the lubricating oil is effectively prevented from leaking at the restraint part.

Preferably, the sealing member is an oil seal ring. Can realize good sealing effect and prevent oil leakage.

Preferably, the rotating shuttle shaft is provided with two oil passing holes, and the two oil passing holes are uniformly distributed along the circumferential direction of the rotating shuttle shaft;

and/or the restraint component is provided with two communication holes which are uniformly distributed along the circumferential direction of the restraint component. The arrangement of the plurality of oil passing holes and/or the communicating holes is favorable for obtaining larger oil output amount and lubrication, and is particularly suitable for a high-speed rotating shuttle device.

Preferably, the oil tank is provided with an oil filling hole for filling oil and an oil window for checking the oil quantity, and the oil window is made of transparent materials. The lubricating oil can be added conveniently, and the amount of the lubricating oil in the oil tank can be checked conveniently.

The utility model discloses the third aspect will be solved the regulation problem of oil yield, and is further, still includes adjusting part, the one end of inside oil duct is constructed with the internal thread, adjusting part be provided with the external screw thread of internal thread looks adaptation, adjusting part through external screw thread and internal screw thread cooperation set up in the one end of rotating shuttle axle for adjust oil yield. In this scheme, set up the adjustment part through the tip in inside oil duct, and the position of adjustment part can be adjusted for the shuttle axle to can effectively adjust the oil output of inside oil duct tip.

A lower machine head for a sewing machine comprises a rotating seat, a first motor, a fixed seat, a second motor, a rotating shuttle and a rotating shuttle oil supply mechanism, wherein,

the oil tank is arranged on the rotating seat, the rotating shuttle shaft is rotatably arranged on the rotating seat and/or the oil tank, and the first motor is fixed on the rotating seat and used for driving the rotating shuttle shaft to rotate;

the rotating shuttle is arranged at one end of the rotating shuttle shaft;

the rotating seat is rotatably arranged on the fixed seat, and the second motor is fixed on the fixed seat and used for driving the rotating seat to rotate relative to the fixed seat. The first motor is arranged, so that the rotating shuttle can be driven to rotate to be matched with the up-and-down reciprocating motion of the needle, and the thread hooking and guiding can be carried out to form stitches; and through setting up the second motor, can drive the roating seat and rotate for the fixing base to reach the purpose of adjusting the rotating shuttle position, make the rotating shuttle mutually support with the eedle, realize perfect stitch seam.

Further, the oil tank is detachably mounted on the rotary seat, or the oil tank and the rotary seat are integrally formed. Especially when adopting integrated into one piece component, be favorable to the structure compacter.

A sewing machine comprises a rotating shuttle oil supply mechanism and a lower machine head, wherein the rotating shuttle oil supply mechanism is arranged on the lower machine head;

or the lower machine head and the rack are included, and the fixed seat is arranged on the rack.

Compared with the prior art, use the utility model provides a pair of rotating shuttle fuel feeding mechanism, lower aircraft nose and sewing machine has characteristics such as compact structure, reasonable in design, with low costs, can not only play good lubrication action when the rotating shuttle is rotatory, can effectively prevent the oil leak when the rotating shuttle is static moreover to can effectively solve the not enough of prior art existence, be particularly useful for high-speed sewing machine, computer style sewing machine etc..

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required 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 structural diagram of a lower handpiece provided in embodiment 1 of the present invention.

Fig. 2 is a second schematic structural diagram of a lower handpiece provided in embodiment 1 of the present invention.

Fig. 3 is a schematic cross-sectional view of a lower head provided in embodiment 1 of the present invention, at a position of a rotating shuttle shaft.

Fig. 4 is a partial side view of fig. 1.

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

Description of the drawings

A rotating shuttle shaft 101, an internal oil passage 102, an internal thread 103, an oil passing hole 104, a driven pulley 105, a bearing 106, a restricting part 107, a communicating hole 108, a sealing part 109, an oil tank 110, an oil filling hole 111, an oil window 112, an internal oil storage cavity 113,

A rotary base 200, a mounting shaft or a mounting cylinder 201,

A fixed seat 300, a second motor 301, a driving pulley 302, a synchronous belt 303 and a driven pulley 304.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The components of embodiments of the present invention, as 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 accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Referring to fig. 1 to 3, the present embodiment provides a rotating shuttle oil supplying mechanism, including a rotating shuttle shaft 101 for mounting a rotating shuttle, an oil tank 110 for storing lubricating oil, and a restricting member 107 for restricting the rotating shuttle shaft 101,

the restricting member 107 is configured with a center hole for passing the shuttle shaft 101, and the side of the restricting member 107 is configured with at least one communication hole 108 communicating with the center hole, the communication hole 108 communicating with the oil tank 110, as shown in fig. 3,

the rotating shuttle shaft 101 is configured with an internal oil passage 102 penetrating one end, and the side of the rotating shuttle shaft 101 is configured with at least one oil passing hole 104 communicating with the internal flow passage, as shown in fig. 3,

the rotating shuttle shaft 101 is sleeved on the restraining part 107 and forms a rotation pair with the restraining part 107, namely the rotating shuttle shaft 101 can rotate relative to the restraining part 107, and the oil passing hole 104 can be communicated with the communicating hole 108 through the rotation of the rotating shuttle shaft 101, namely the oil passing hole 104 can be communicated with the communicating hole 108 at a set position during the rotation of the rotating shuttle shaft 101, as shown in the figure, in the embodiment, the oil tank 110 is arranged to store lubricating oil conveniently, the restraining part 107 is arranged to form the rotation pair with the rotating shuttle shaft 101, so that the rotating shuttle shaft 101 can be restrained and supported, the rotating shuttle shaft 101 can rotate under the driving of the motor, the aim of motion separation is achieved, and when the rotating shuttle shaft 101 rotates to the set position, the oil passing hole 104 formed on the rotating shuttle shaft 101 can be communicated with the communicating hole 108 formed on the restraining part 107, by adopting the structural design, the lubricating oil stored in the oil tank 110 can be discharged through the communicating hole 108, the oil passing hole 104 and the internal oil duct 102 and directly acts on the rotating shuttle, so that the lubricating purpose is achieved, and due to the fact that the oil passing hole 104 is driven to synchronously rotate when the rotating shuttle shaft 101 rotates, the oil passing hole 104 is periodically communicated with the communicating hole 108, and due to the fact that the internal oil duct 102 is arranged inside the rotating shuttle shaft 101, a cavity structure is formed, the lubricating oil in the oil tank 110 can be continuously pumped into the internal oil duct 102 by the rotation (negative pressure formation) of the rotating shuttle shaft 101, and the continuous and stable lubricating purpose is achieved; when the rotating shuttle stops working, on one hand, the rotating shuttle shaft 101 can stay at the position where the oil passing hole 104 is not communicated with the communicating hole 108, so that oil leakage can be effectively prevented, and on the other hand, the inside of the oil tank 110 can be kept in a vacuum state, and under the action of no external suction force, the lubricating oil in the oil tank cannot flow out, so that the oil leakage can be prevented; this scheme, not only simple structure, lubricated process produce oil and last, steady, can realize better lubricated effect, can effectively solve the problem of oil leak moreover.

In the present embodiment, the communication hole 108 may communicate with the oil tank 110 through a pipe or directly with the oil tank 110, as shown in fig. 3, while the shape of the oil tank 110 may have various embodiments, and the present embodiment does not limit the shape of the oil tank 110 as long as it can contain and store lubricating oil, for example, as shown in fig. 3, in the present embodiment, the oil tank 110 has an L-shaped block structure; in order to add lubricating oil, the oil tank 110 is provided with an oil filling hole 111 for filling oil, and the oil filling hole 111 is provided with a matched sealing cover; in order to facilitate the checking of the amount of the lubricant in the oil tank 110, in a further embodiment, an oil window 112 for checking the amount of the lubricant is further configured on one side of the oil tank 110, the oil window 112 is made of a transparent material, and as shown in fig. 3, a scale may be provided on the oil window 112.

In this embodiment, the shape of the communication holes 108 and the oil passing holes 104 may be circular holes, square holes, etc., which are not illustrated one by one, and the number of the communication holes 108 and the oil passing holes 104 may be various, which may be determined according to the actual situation, and preferably, in this embodiment, as shown in fig. 3, the shuttle shaft 101 is provided with two oil passing holes 104, and the two oil passing holes 104 are uniformly distributed along the circumferential direction of the shuttle shaft 101; as shown in the figure, two oil passing holes 104 are symmetrically arranged; and/or, the restriction component 107 is provided with two communication holes 108, and the two communication holes 108 are uniformly distributed along the circumferential direction of the restriction component 107, that is, the two communication holes 108 are also symmetrically arranged; the arrangement of the oil passing holes 104 and/or the communicating holes 108 is favorable for obtaining larger oil output and lubrication, and is particularly suitable for high-speed rotating shuttle devices. It can be understood that, in the present embodiment, the oil outlet amount of the lubricating oil can be effectively controlled by reasonably setting the number and size of the communication holes 108 and the oil passing holes 104.

In this embodiment, the restriction member 107 has various embodiments, and preferably, the restriction member 107 may be a sleeve or a sleeve to form a moving pair with the rotating shuttle shaft 101; as an example, in the embodiment, as shown in the figure, the restriction component 107 is a bushing to cooperate with the rotating shuttle shaft 101, and the friction between the restriction component 107 and the rotating shuttle shaft 101 can be significantly reduced, which is more beneficial for the rotating shuttle shaft 101 to rotate.

In order to make the structure more compact, the restricting member 107 may be preferably fixed to the oil tank 110. That is, the restricting member 107 may be provided directly to the oil tank 110 so that the restricting member 107 and the oil tank 110 may communicate with each other without an additional pipe; as a preferred embodiment, as shown in fig. 3, the oil tank 110 is configured with a mounting hole for mounting the restricting member 107, and the mounting hole is communicated with the internal oil storage cavity 113 of the oil tank 110, the restricting member 107 is arranged in the mounting hole, and both ends of the restricting member 107 are respectively provided with a sealing member 109; by providing the mounting holes, it is possible to facilitate mounting of the restricting member 107 and to seal both ends of the restricting member 107 with the seal members 109, thereby effectively preventing the leakage of the lubricating oil at the restricting member 107.

Preferably, as shown in fig. 3, the sealing member 109 may preferably adopt an oil seal ring, so as to achieve a good sealing effect and prevent oil leakage.

In a further scheme, the oil-saving control device further comprises an adjusting part, wherein one end of the internal oil passage 102 is configured with an internal thread 103, as shown in fig. 3, the adjusting part is provided with an external thread matched with the internal thread 103, and the adjusting part can be arranged at one end of the rotating shuttle shaft 101 through the matching of the external thread and the internal thread 103 and is used for adjusting the oil outlet amount; the end part of the internal oil channel 102 is provided with the adjusting part, and the position of the adjusting part can be adjusted relative to the rotating shuttle shaft 101, so that the oil outlet quantity of the end part of the internal oil channel 102 can be effectively adjusted; in the present embodiment, the adjusting member may be an adjusting bolt commonly used in the prior art, and is not illustrated here.

Example 2

The embodiment provides a lower head for a sewing machine, which comprises a rotary seat 200, a first motor, a fixed seat 300, a second motor 301, a rotating shuttle and the rotating shuttle oil supply mechanism in the embodiment 1, wherein,

the oil tank 110 is disposed on the rotary base 200, as shown in fig. 1 to 5, the rotary shuttle shaft 101 is rotatably mounted on the rotary base 200 and/or the oil tank 110, and the first motor is fixed on the rotary base 200 and is configured to drive the rotary shuttle shaft 101 to rotate so as to cooperate with the up-and-down reciprocating motion of the needle, so as to hook and guide the thread to form a stitch;

the rotating shuttle is arranged at one end of the rotating shuttle shaft 101 so as to rotate synchronously with the rotating shuttle shaft 101;

the rotating base 200 is rotatably mounted on the fixed base 300, and the second motor 301 is fixed on the fixed base 300 and is used for driving the rotating base 200 to rotate relative to the fixed base 300 so as to achieve the purpose of adjusting the direction of the rotating shuttle, so that the rotating shuttle can be matched with a machine needle to realize perfect stitches.

As shown in fig. 1 to 5, for better constraining the rotating shuttle shaft 101, one end of the rotating shuttle shaft 101 may be constrained to the rotary base 200 through a bearing 106, and for transmission, the first motor and the rotating shuttle shaft 101 may be transmitted through a first transmission mechanism, for example, in this embodiment, the first transmission mechanism includes a driving pulley 302 connected to the first motor, a driven pulley 304105 disposed on the rotating shuttle shaft 101, and a timing belt 303 tensioned between the driving pulley 302 and the driven pulley 304105; similarly, the second motor 301 and the rotary base 200 may also transmit through a second transmission mechanism, for example, the second transmission mechanism includes a driving pulley 302 connected to the first motor, a driven pulley 304105 disposed on the rotary base 200, and a timing belt 303 tensioned between the driving pulley 302 and the driven pulley 304105, and in order to facilitate the installation of the driven pulley 304105, the rotary base 200 is provided with an installation shaft or a mounting cylinder 201, the installation shaft or the mounting cylinder 201 may be fixed to the fixing base 300 through a bearing 106, and the driven pulley 304105 may be disposed on the installation shaft or the mounting cylinder 201 so as to drive the rotary base 200 to rotate.

Preferably, the oil tank 110 may be a separate component, and the mailbox may be detachably mounted on the rotary base 200, and in this embodiment, the oil tank 110 and the rotary base 200 may be an integrally formed component, as shown in fig. 1 to 5, that is, an internal oil storage cavity 113 for storing lubricating oil may be directly formed on the rotary base 200, so that the mailbox is directly formed on the rotary base 200, which is beneficial to making the overall structure more compact.

Example 3

The embodiment provides a sewing machine, which comprises the rotating shuttle oil supply mechanism in the embodiment 1 and a lower machine head commonly used in the prior art, wherein the rotating shuttle oil supply mechanism is arranged on the lower machine head so as to achieve the purposes of lubricating the rotating shuttle and preventing oil leakage.

Example 4

The embodiment provides a sewing machine, including in embodiment 2 aircraft nose and frame down, fixing base 300 install in the frame, the upper surface of frame is the plane for the material of keeping flat.

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

Claims (10)

1. A rotating shuttle oil supply mechanism is characterized by comprising a rotating shuttle shaft for installing a rotating shuttle, an oil tank for storing lubricating oil and a restraining component for restraining the rotating shuttle shaft,

the restricting member is configured with a center hole for passing through the rotating shuttle shaft, and a side surface of the restricting member is configured with at least one communication hole communicating with the center hole, the communication hole communicating with the oil tank,

the rotating shuttle shaft is provided with an internal oil passage penetrating through one end, the side surface of the rotating shuttle shaft is provided with at least one oil passing hole communicated with the internal flow passage,

the rotating shuttle shaft is sleeved on the constraint part and forms a revolute pair with the constraint part, and the oil passing hole can be communicated with the communicating hole through the rotation of the rotating shuttle shaft.

2. The rotary shuttle fuel supply mechanism of claim 1, wherein the restraining member is a bushing or sleeve.

3. The rotary shuttle fuel supply mechanism of claim 1, wherein the restricting member is secured to the fuel tank.

4. The rotating shuttle fuel supply mechanism according to any one of claims 1 to 3, wherein the fuel tank is configured with a mounting hole for mounting the restricting member, and the mounting hole communicates with an internal fuel storage cavity of the fuel tank,

the restraint component is arranged in the mounting hole, and two ends of the restraint component are respectively provided with a sealing component.

5. The rotary shuttle oil supply mechanism according to claim 4, wherein the sealing member is an oil seal ring.

6. The rotating shuttle oil supply mechanism according to any one of claims 1 to 3, wherein the rotating shuttle shaft is provided with two oil passing holes, and the two oil passing holes are uniformly distributed along the circumferential direction of the rotating shuttle shaft;

and/or the restraint component is provided with two communication holes which are uniformly distributed along the circumferential direction of the restraint component.

7. The rotating shuttle fuel supply mechanism according to any one of claims 1 to 3, wherein said fuel tank is configured with a fuel filler hole for filling fuel and a fuel window for checking the amount of fuel, said fuel window being made of a transparent material;

and/or one end of the internal oil passage is configured with an internal thread for connecting an adjusting part.

8. A lower head for a sewing machine, comprising a rotary base, a first motor, a fixed base, a second motor, a rotary hook, and the rotary hook oil supply mechanism of any one of claims 1 to 7,

the oil tank is arranged on the rotating seat, the rotating shuttle shaft is rotatably arranged on the rotating seat and/or the oil tank, and the first motor is fixed on the rotating seat and used for driving the rotating shuttle shaft to rotate;

the rotating shuttle is arranged at one end of the rotating shuttle shaft;

the rotating seat is rotatably arranged on the fixed seat, and the second motor is fixed on the fixed seat and used for driving the rotating seat to rotate relative to the fixed seat.

9. The lower head for a sewing machine of claim 8, wherein the oil tank is detachably mounted to the rotary base, or the oil tank and the rotary base are an integrally formed member.

10. A sewing machine comprising the rotating shuttle oil supply mechanism according to any one of claims 1 to 7 and a lower head, wherein the rotating shuttle oil supply mechanism is mounted to the lower head;

or comprises the lower head and the frame as claimed in any one of claims 8 to 9, wherein the fixed seat is mounted on the frame.

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