A shuttle bed, a rotating shuttle and a sewing machine

Abstract

The utility model discloses a sewing machine technical field's a shuttle bed, shuttle and sewing machine are provided with the guide rail groove on the inner side wall of shuttle bed, are provided with the oil storage cavity on the lateral wall of shuttle bed, and the oil storage cavity and guide rail groove are communicated through the oil outlet hole, and the oil outlet hole is located the rear end of the rotation direction of shuttle bed. The utility model not only has realized the micro - oil lubrication of shuttle, has prolonged the service life of shuttle, has avoided the phenomenon of oil liquid pollution cloth still.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a shuttle bed, a rotary shuttle, and a sewing machine. Background Technology

[0002] The rotary shuttle is the core component of a sewing machine, consisting of a shuttle bed (also called the outer shuttle), a shuttle frame (also called the inner shuttle), a shuttle plate, and a shuttle skin. A rotary shuttle guide rail is arranged circumferentially on the shuttle frame, and guide rail grooves that mate with the rotary shuttle guide rail are arranged circumferentially on the shuttle bed. The shuttle bed rotates around the shuttle frame at a speed of 8000-10000 rpm. In the area where the rotary shuttle operates, especially between the guide rail and the guide rail groove, there are a large amount of lint, fibers, debris, and fabric fragments. The resulting abrasive friction increases the complexity of the friction and affects the service life of the rotary shuttle. Therefore, the rotary shuttle must be lubricated and cooled.

[0003] As consumers demand higher quality clothing, the problem of oil stains on sewing machines must also be solved. This requires the rotary hook to be able to operate at high speeds under conditions of no oil, little oil, or minimal oil.

[0004] In existing technology, sewing machines use a special 10# white oil, which has excellent fluidity, good penetration, and uniform coverage. However, if there is even one point of oil leakage, it will quickly spread to the surface of adjacent parts. Therefore, it is necessary to seal both ends of the bushing of the rotary hook drive shaft to prevent lubricating oil from passing through the gap between the shaft and the bushing. However, since the rotary hook drive shaft rotates at speeds up to 10,000 rpm and is constantly in a state of repeated high-speed start-stop, the sealing mechanism will quickly experience a certain degree of wear, making it difficult to maintain a truly effective seal. Summary of the Invention

[0005] In view of this, the purpose of this utility model is to provide a shuttle bed that addresses the above-mentioned technical problems, so as to achieve lubrication of the rotary shuttle and prevent the occurrence of oil stains.

[0006] The technical solution adopted by this utility model is as follows: a shuttle bed, wherein a guide rail groove is provided on the inner side wall of the shuttle bed, and an oil storage cavity is provided on the outer side wall of the shuttle bed. The oil storage cavity and the guide rail groove are connected through an oil outlet hole, which is located at the rear end of the shuttle bed in the direction of rotation.

[0007] Preferably, an inner groove is provided on the end face of the shuttle bed, and the inner groove is connected to the oil storage chamber through a connecting oil passage.

[0008] Preferably, the connecting oil passage includes a first axial section, a radial section, and a second axial section. One end of the first axial section is connected to the oil storage chamber, the radial section is connected between the first axial section and the second axial section, and the other end of the second axial section is connected to the inner groove.

[0009] Preferably, the shuttle bed is provided with an installation hole and an oil collection groove, one end of the installation hole is connected to the oil collection groove, the other end of the installation hole is connected to the inner groove, and one end of the radial section extends to be connected to the oil collection groove.

[0010] Preferably, in the axial direction of the shuttle bed, the radial dimension of the inner groove is larger the closer it is to the oil storage cavity.

[0011] Preferably, the oil storage cavity includes an oil sealing section and an oil storage section, the oil storage section is connected to the oil outlet, an oil storage cotton is provided in the oil storage section, and an oil seal cap is provided in the oil sealing section.

[0012] Preferably, the depth of the oil outlet hole is 0.3mm to 1mm.

[0013] Preferably, the end of the oil outlet near the guide rail groove is chamfered.

[0014] Preferably, the oil outlet is filled with a filler that allows lubricating oil to pass through.

[0015] Preferably, the filler is foamed metal or powder metallurgy.

[0016] Preferably, the minimum distance between the filler and the guide groove is 0.1 mm.

[0017] The second objective of this utility model is to provide a rotary shuttle, including the aforementioned shuttle bed, shuttle frame, shuttle plate, and shuttle skin. The shuttle frame is disposed in the inner cavity of the shuttle bed, and the guide rail on the outer wall of the shuttle frame is slidably connected to the guide rail groove. The shuttle plate and shuttle skin are installed on the outer periphery of the shuttle bed, and the shuttle skin is directly opposite the oil storage cavity.

[0018] The third objective of this utility model is to provide a sewing machine, including the aforementioned rotary hook, machine housing, rotary hook drive shaft, bushing, and oil seal. The bushing is sleeved on the rotary hook drive shaft and installed on the machine housing. One end of the rotary hook drive shaft is fixedly connected to the shuttle bed of the rotary hook. An oil seal is installed at the end of the bushing near the rotary hook, and the oil seal is fixedly connected between the rotary hook drive shaft and the bushing.

[0019] Preferably, a fixing frame is installed between the bushing and the rotary hook. An oil-absorbing cotton is installed on one side of the fixing frame, with one end of the oil-absorbing cotton embedded in the fixing frame and the other end of the oil-absorbing cotton abutting against the bushing. An oil-supplying cotton is installed on the other side of the fixing frame, with one end of the oil-supplying cotton embedded in the fixing frame and the other end of the oil-supplying cotton located in the inner groove of the rotary hook.

[0020] Preferably, the fixing frame has an axially connected first fixing groove and a second fixing groove, the radial dimension of the first fixing groove is larger than the radial dimension of the second fixing groove, the oil-absorbing cotton is embedded in the first fixing groove, and the oil-supplying cotton is embedded in the second fixing groove.

[0021] Preferably, the oil-absorbing cotton and the oil-supplying cotton are axially fixedly connected.

[0022] The beneficial effects of this utility model are:

[0023] This invention features an oil outlet on the shuttle that connects the guide rail groove and the oil storage chamber. The oil outlet is positioned at the rear end of the shuttle's rotation direction. When the shuttle accelerates, the oil in the storage chamber flows into the guide rail groove under positive pressure due to centrifugal force. When the shuttle decelerates, the oil in the guide rail groove is drawn into the storage chamber under negative pressure due to centrifugal force. This not only achieves micro-oil lubrication of the rotary shuttle and extends its service life, but also avoids oil contamination of the fabric. Attached Figure Description

[0024] Figure 1 This is a three-dimensional schematic diagram of the shuttle bed of this utility model;

[0025] Figure 2 This is an exploded view of the shuttle bed of this utility model;

[0026] Figure 3 This is a schematic diagram of the shuttle bed structure of this utility model;

[0027] Figure 4 This is one of the cross-sectional views of the shuttle bed of this utility model;

[0028] Figure 5 This is a second sectional view of the shuttle bed of this utility model;

[0029] Figure 6 This is a side view of the shuttle bed of this utility model;

[0030] Figure 7 This is a three-dimensional schematic diagram of the rotary hook of this utility model;

[0031] Figure 8 This is an explosion diagram of the rotary shuttle of this utility model;

[0032] Figure 9 This is a three-dimensional schematic diagram of the sewing machine of this utility model;

[0033] Figure 10 This is a schematic diagram of the structure of the sewing machine of this utility model;

[0034] Figure 11 This is an exploded view of the sewing machine of this utility model.

[0035] Figure 12 This is a structural diagram of the mounting bracket.

[0036] Explanation of the reference numerals in the figure:

[0037] 10. Shuttle bed;

[0038] 11. Guide rail groove; 12. Oil reservoir; 121. Oil sealing section; 122. Oil storage section; 13. Oil outlet; 131. Filler; 14. Inner groove; 15. Connecting oil passage; 151. First axial section; 152. Radial section; 153. Second axial section; 16. Mounting hole; 17. Oil collection groove; 18. Oil storage cotton; 19. Oil seal cap;

[0039] 20. Shuttle frame; 21. Guide rail;

[0040] 30. Shuttle plate;

[0041] 40. Shuttle skin;

[0042] 100. Rotary shuttle;

[0043] 200. Housing;

[0044] 300. Shuttle drive shaft;

[0045] 400, bushing;

[0046] 500, oil seal;

[0047] 600, Fixing bracket; 610, First retaining groove; 620, Second retaining groove;

[0048] 700, oil-absorbing cotton;

[0049] 800, Oil-soaked cotton. Detailed Implementation

[0050] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate this utility model and are not intended to limit it.

[0051] In the description of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0052] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] Furthermore, in the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0054] Examples, such as Figures 1-6 As shown, a shuttle bed 10 has a guide rail groove 11 on its inner side wall and an oil storage cavity 12 formed on its outer side wall. The oil storage cavity 12 and the guide rail groove 11 are connected by an oil outlet hole 13. In the rotation direction of the shuttle bed 10, the oil outlet hole 13 is located at the rear end of the rotation direction, so that when the shuttle bed 10 accelerates, the oil in the oil storage cavity 12 can flow into the guide rail groove 11 under positive pressure, and when the shuttle bed 10 decelerates, the oil in the guide rail groove 11 can be drawn into the oil storage cavity 12 under negative pressure.

[0055] This invention provides an oil outlet 13 on the shuttle 10, connecting the guide rail groove 11 and the oil storage chamber 12. The oil outlet 13 is located at the rear end of the shuttle 10 in the direction of rotation. When the shuttle 10 accelerates its rotation, the oil in the oil storage chamber 12 can flow into the guide rail groove 11 under positive pressure under the action of centrifugal force. When the shuttle 10 decelerates its rotation, the oil in the guide rail groove 11 can flow back to the oil storage chamber 12 under negative pressure under the action of centrifugal force. In this way, not only is micro-oil lubrication of the rotary shuttle 100 achieved, extending the service life of the rotary shuttle 100, but also the phenomenon of oil contamination of the fabric is avoided.

[0056] Specific embodiment 1, such as Figures 1-6 As shown, a shuttle bed 10 has a guide rail groove 11 formed along the circumferential direction on the inner side wall of the shuttle bed 10, and an oil storage cavity 12 formed on the outer side wall of the shuttle bed 10. The oil storage cavity 12 and the guide rail groove 11 are connected through an oil outlet hole 13. That is, an oil outlet hole 13 is formed along the radial direction on the shuttle bed 10. One end of the oil outlet hole 13 is connected to the guide rail groove 11, and the other end of the oil outlet hole 13 is connected to the oil storage cavity 12.

[0057] like Figure 6 As shown, in the rotation direction of the shuttle bed 10, the oil outlet 13 is located at the rear end of the rotation direction, so that when the shuttle bed 10 accelerates its rotation, the oil in the oil storage chamber 12 flows into the guide rail groove 11 under positive pressure, and when the shuttle bed 10 decelerates its rotation, the oil in the guide rail groove 11 is sucked into the oil storage chamber 12 under negative pressure.

[0058] In an alternative embodiment, such as Figure 6 As shown, the oil outlet 13 is a circular hole, that is, the cross-section of the oil outlet 13 is a circle, and the depth of the circular hole is 0.3mm to 1mm. In other words, the size of the oil outlet 13 in the radial direction of the shuttle bed 10 is 0.3mm to 1mm.

[0059] In an alternative embodiment, such as Figure 3 and Figure 5 As shown, the oil outlet 13 has a chamfer at one end near the guide rail groove 11, that is, the inner end of the oil outlet 13 has a chamfer. The chamfer is preferably a round chamfer to prevent the opening of the oil outlet 13 from scratching the guide rail 21 on the outer wall of the shuttle frame 20.

[0060] In an alternative embodiment, such as Figure 5 As shown, the oil outlet 13 is filled with a filler 131 that allows lubricating oil to pass through. The filler 131 is located at the end of the oil outlet 13 near the oil reservoir 12. That is, the filler 131 is installed in the oil outlet 13. The filler 131 is located at the end of the oil outlet 13 near the oil reservoir 12. The filler 131 allows liquids to pass through, such as sewing machine lubricating oil, and the filler 131 can prevent some larger objects, such as dust, lint, fibers, and fabric fragments, from passing through.

[0061] Specifically, the filler 131 is a material that is permeable to other lubricating oils, such as foam metal.

[0062] In an alternative embodiment, such as Figure 5 As shown, the minimum distance between the filler 131 and the guide rail groove 11 is 0.1mm. That is, in the radial dimension of the shuttle bed 10, the size of the filler 131 is 0.1mm smaller than the size of the oil outlet 13, so as to prevent the filler 131 from contacting the guide rail 21 of the shuttle frame 20 and avoid the filler 131 from being worn.

[0063] In an alternative embodiment, such as Figure 3 , Figure 4 and Figure 6 As shown, the length direction of the oil storage cavity 12 is the circumferential direction of the shuttle bed 10, and the depth direction of the oil storage cavity 12 is the radial direction of the shuttle bed 10. In the radial direction of the shuttle bed 10, the oil storage cavity 12 includes an oil sealing section 121 and an oil storage section 122. The oil storage section 122 is connected to the oil outlet 13, and an oil storage cotton 18 is installed in the oil storage section 122. The oil storage cotton 18 can stabilize the oil in the oil storage cavity 12 and prevent the oil from shaking.

[0064] The size of the sealing section 121 is larger than that of the oil storage section 122, so that a stepped surface is formed between the sealing section 121 and the oil storage section 122. An oil seal cover 19 is installed on the sealing section 121 to seal the oil storage cavity 12 and prevent the oil in the oil storage cavity 12 from leaking out.

[0065] Specific embodiment 2, such as Figures 1-6 As shown, a shuttle bed 10 has a guide rail groove 11 formed along the circumferential direction on the inner side wall of the shuttle bed 10, and an oil storage cavity 12 formed on the outer side wall of the shuttle bed 10. The oil storage cavity 12 and the guide rail groove 11 are connected through an oil outlet hole 13. That is, an oil outlet hole 13 is formed along the radial direction on the shuttle bed 10. One end of the oil outlet hole 13 is connected to the guide rail groove 11, and the other end of the oil outlet hole 13 is connected to the oil storage cavity 12.

[0066] like Figure 6 As shown, in the rotation direction of the shuttle bed 10, the oil outlet 13 is located at the rear end of the rotation direction, so that when the shuttle bed 10 accelerates its rotation, the oil in the oil storage chamber 12 flows into the guide rail groove 11 under positive pressure, and when the shuttle bed 10 decelerates its rotation, the oil in the guide rail groove 11 is sucked into the oil storage chamber 12 under negative pressure.

[0067] In an alternative embodiment, such as Figure 5 As shown, the oil outlet 13 is filled with a filler 131 that allows lubricating oil to enter the guide rail groove 11. The filler 131 is located at one end of the oil outlet 13 near the oil storage chamber 12.

[0068] Preferably, the filler 131 is a powder metallurgy material or other lubricating oil permeable.

[0069] In an alternative embodiment, such as Figure 3 and Figure 4 As shown, an inner groove 14 is provided on the end face of the shuttle bed 10, that is, an inner groove 14 is provided on the large end face of the installation end of the shuttle bed 10. The inner groove 14 is connected to the oil storage chamber 12 through the connecting oil passage 15, so that the oil spreading along the shuttle drive shaft 300 is gathered in the inner groove 14 under the action of centrifugal force, preventing the oil from spreading and contaminating the fabric.

[0070] Preferred, such as Figure 4As shown, the connecting oil passage 15 includes a first axial section 151, a radial section 152, and a second axial section 153. The first axial section 151 and the second axial section 153 are arranged approximately along the axial direction of the shuttle bed 10, and the radial section 152 is arranged approximately along the radial direction of the shuttle bed 10. One end of the first axial section 151 is connected to one side of the oil storage section 122 of the oil storage cavity 12. The radial section 152 is connected between the first axial section 151 and the second axial section 153. That is, the outer end of the radial section 152 is connected to the other end of the first axial section 151, and the inner end of the radial section 152 is connected to one end of the second axial section 153. The other end of the second axial section 153 is connected to the inner groove 14, so that the oil collected in the inner groove 14 flows into the oil storage cavity 12 through the connecting oil passage 15 under the action of centrifugal force.

[0071] More preferably, in the axial direction of the shuttle bed 10, the radial dimension of the inner groove 14 is larger the closer it is to the oil storage cavity 12. That is, from the large end face of the shuttle bed 10 to the oil storage cavity 12, the radial dimension of the inner groove 14 increases, so that the cross-sectional shape of the inner groove 14 is dovetail groove.

[0072] In an alternative embodiment, such as Figure 3 and Figure 4 As shown, the shuttle bed 10 is also provided with a mounting hole 16 and an oil collection groove 17. The mounting hole 16 is coaxial with the shuttle bed 10 and is used to fix the shuttle bed 10 to the rotary shuttle drive shaft 300. One end of the mounting hole 16 is connected to the oil collection groove 17, and the other end of the mounting hole 16 is connected to the inner groove 14. The radial dimension of the oil collection groove 17 is larger than the radial dimension of the mounting hole 16, and the inner end of the radial section 152 extends to communicate with the oil collection groove 17. That is, the inner end of the radial section 152 extends along the radial direction of the shuttle bed 10 and communicates with the oil collection groove 17, so as to collect and reuse the oil that spreads along the rotary shuttle drive shaft 300 through the oil collection groove 17.

[0073] Examples, such as Figure 7 and Figure 8 As shown, a rotary shuttle includes the aforementioned shuttle bed 10, and the rotary shuttle 100 also includes a shuttle frame 20, a shuttle plate 30, and a shuttle skin 40.

[0074] The shuttle frame 20 is installed in the inner cavity of the shuttle bed 10, and the guide rail 21 on the outer wall of the shuttle frame 20 is slidably connected in the guide rail groove 11. The shuttle plate 30 and the shuttle skin 40 are installed on the outer periphery of the shuttle bed 10, and the shuttle skin 40 is directly opposite the oil storage cavity 12 and presses the oil seal cover 19.

[0075] Examples, such as Figures 9-12 As shown, a sewing machine includes the aforementioned rotary hook 100, and the sewing machine also includes a housing 200, a rotary hook drive shaft 300, a bushing 400, and an oil seal 500.

[0076] like Figure 10 and Figure 11 As shown, the bushing 400 is sleeved on the rotary shuttle drive shaft 300 and installed on the housing 200. One end of the rotary shuttle drive shaft 300 is inserted into the mounting hole 16 of the shuttle bed 10 and is fixedly connected to the shuttle bed 10. An oil seal 500 is installed at the end of the bushing 400 near the rotary shuttle, and the oil seal 500 is fixedly connected between the rotary shuttle drive shaft 300 and the bushing 400.

[0077] A fixing frame 600 is installed between the bushing 400 and the rotary hook 100. An oil-absorbing cotton 700 is installed on one side of the fixing frame 600. One end of the oil-absorbing cotton 700 is embedded in the fixing frame 600, and the other end of the oil-absorbing cotton 700 abuts against the bushing 400 and the oil seal 500 to absorb the trace amount of lubricating oil that seeps out from between the oil seal 500 and the rotary hook drive shaft 300. An oil supply cotton 800 is installed on the other side of the fixing frame 600. One end of the oil supply cotton 800 is embedded in the fixing frame 600 and abuts against the oil-absorbing cotton 700, and the other end of the oil supply cotton 800 is located in the inner groove 14 of the rotary hook 100 so that the oil on the oil-absorbing cotton 700 flows into the inner groove 14 of the rotary hook 100.

[0078] In an alternative embodiment, such as Figure 10 and Figure 12 As shown, a first embedding groove 610 and a second embedding groove 620 are provided on the fixing frame 600, which are axially connected. The radial dimension of the first embedding groove 610 is larger than the radial dimension of the second embedding groove 620. The oil-absorbing cotton 700 is embedded in the first embedding groove 610, and the oil-supplying cotton 800 is embedded in the second embedding groove 620.

[0079] In an optional embodiment, the oil-absorbing cotton 700 and the oil-supplying cotton 800 are axially fixedly connected, that is, the oil-absorbing cotton 700 and the oil-supplying cotton 800 are integrally formed.

[0080] The working process of the sewing machine of this utility model is as follows:

[0081] When the rotary shuttle 100 rotates at a speed of 8000 rpm, the centrifugal force generated will throw a small amount of white oil on the end face into the inner groove 14. The small amount of white oil enters the connecting oil passage 15 and reaches the oil storage chamber 12 of the rotary shuttle 100, where it is stored. Then, the white oil is consumed by the movement pair of the guide rail 21 and the guide rail groove 11.

[0082] Because the sewing machine operates at high speed and with short travel distances, the rotary hook 100 repeatedly goes through the following states: stationary, starting, instantaneous acceleration to 10,000 rpm, continuous operation for a few seconds to tens of seconds, and instantaneous stopping. Under the influence of such high-speed, short-duration repeated start-stop states, the white oil in the oil storage chamber 12 will also form local oil pressure due to inertia, causing the lubricating oil to penetrate through the filler 131 and reach the guide rail 21 and guide rail groove 11 for lubrication. After the lubricating oil drawn in is consumed, the oil storage chamber 12 will form a negative pressure again, drawing oil through the connecting oil passage 15. When the white oil drawn in by the oil storage chamber 12 is removed, a negative pressure will be generated again, causing the oil-absorbing cotton 700 and the oil-supplying cotton 800 to collect as much small amount of white oil as possible from around the rotary hook 100, and this cycle repeats continuously.

[0083] The oil seepage points around the rotary shuttle 100 are only at the rotary shuttle drive shaft 300 and bushing 400, which not only keeps the area around the rotary shuttle 100 dry, but also ensures that the rotary shuttle guide rail is always lubricated with a small amount of white oil.

[0084] Compared with the prior art, the present invention has at least the following beneficial technical effects:

[0085] This utility model has a simple structure. It collects the small amount of lubricating oil that seeps out from the drive shaft of the rotary hook through an oiled cotton ball for the lubrication of the rotary hook. This not only lubricates the rotary hook and keeps the area around the rotary hook dry and clean, but also prevents the accumulation of lubricating oil around the rotary hook from contaminating the garment and semi-finished garment products.

[0086] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. A shuttle bed, characterized in that, The inner sidewall of the shuttle bed (10) is provided with a guide rail groove (11), and the outer sidewall of the shuttle bed (10) is provided with an oil storage cavity (12). The oil storage cavity (12) and the guide rail groove (11) are connected through an oil outlet hole (13), which is located at the rear end of the shuttle bed (10) in the direction of rotation.

2. A shuttle bed according to claim 1, characterized in that, An inner groove (14) is provided on the end face of the shuttle bed (10), and the inner groove (14) is connected to the oil storage cavity (12) through the connecting oil passage (15).

3. A shuttle bed according to claim 2, characterized in that, The connecting oil passage (15) includes a first axial section (151), a radial section (152), and a second axial section (153). One end of the first axial section (151) is connected to the oil storage chamber (12), the radial section (152) is connected between the first axial section (151) and the second axial section (153), and the other end of the second axial section (153) is connected to the inner groove (14).

4. A shuttle bed according to claim 3, characterized in that, The shuttle (10) is provided with an installation hole (16) and an oil collection groove (17). One end of the installation hole (16) is connected to the oil collection groove (17), and the other end of the installation hole (16) is connected to the inner groove (14). One end of the radial section (152) extends to be connected to the oil collection groove (17).

5. A shuttle bed according to claim 2, characterized in that, In the axial direction of the shuttle bed (10), the radial dimension of the inner groove (14) is larger the closer it is to the oil storage cavity (12).

6. A shuttle bed according to claim 1, characterized in that, The oil storage chamber (12) includes an oil sealing section (121) and an oil storage section (122). The oil storage section (122) is connected to the oil outlet (13). An oil storage cotton (18) is provided in the oil storage section (122), and an oil seal cap (19) is provided in the oil sealing section (121).

7. A shuttle bed according to claim 1, characterized in that, The depth of the oil outlet hole (13) is 0.3 mm to 1 mm.

8. A shuttle bed according to claim 1, characterized in that, The oil outlet (13) has a chamfer at one end near the guide rail groove (11).

9. A shuttle bed according to claim 1, characterized in that, The oil outlet (13) is filled with a filler (131) that allows lubricating oil to pass through.

10. A shuttle bed according to claim 9, characterized in that, The filler (131) is foamed metal or powder metallurgy.

11. A shuttle bed according to claim 9, characterized in that, The minimum distance between the filler (131) and the guide groove (11) is 0.1 mm.

12. A rotary shuttle, comprising the shuttle bed according to any one of claims 1-11, characterized in that, The rotary shuttle (100) also includes a shuttle frame (20), a shuttle plate (30), and a shuttle skin (40). The shuttle frame (20) is disposed in the inner cavity of the shuttle bed (10), and the guide rail (21) on the outer side wall of the shuttle frame (20) is slidably connected in the guide rail groove (11). The shuttle plate (30) and the shuttle skin (40) are installed on the outer periphery of the shuttle bed (10), and the shuttle skin (40) is directly opposite the oil storage cavity (12).

13. A sewing machine comprising a rotary hook according to claim 12, characterized in that, The sewing machine also includes a housing (200), a rotary shuttle drive shaft (300), a bushing (400), and an oil seal (500). The bushing (400) is sleeved on the rotary shuttle drive shaft (300) and installed on the housing (200). One end of the rotary shuttle drive shaft (300) is fixedly connected to the shuttle bed (10) of the rotary shuttle (100). An oil seal (500) is installed at the end of the bushing (400) near the rotary shuttle. The oil seal (500) is fixedly connected between the rotary shuttle drive shaft (300) and the bushing (400).

14. A sewing machine according to claim 13, characterized in that, A fixing frame (600) is installed between the bushing (400) and the rotary hook (100). An oil-absorbing cotton (700) is installed on one side of the fixing frame (600). One end of the oil-absorbing cotton (700) is embedded in the fixing frame (600), and the other end of the oil-absorbing cotton (700) abuts against the bushing (400). An oil-supplying cotton (800) is installed on the other side of the fixing frame (600). One end of the oil-supplying cotton (800) is embedded in the fixing frame (600), and the other end of the oil-supplying cotton (800) is located in the inner groove (14) of the rotary hook (100).

15. A sewing machine according to claim 14, characterized in that, The fixing frame (600) has an axially connected first fixing groove (610) and a second fixing groove (620). The radial dimension of the first fixing groove (610) is larger than the radial dimension of the second fixing groove (620). The oil-absorbing cotton (700) is embedded in the first fixing groove (610), and the oil-supplying cotton (800) is embedded in the second fixing groove (620).

16. A sewing machine according to claim 14, characterized in that, The oil-absorbing cotton (700) and the oil-supplying cotton (800) are axially fixedly connected.

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