Sewing machine

Abstract

The utility model relates to a sewing machine, comprising: a sewing machine base mechanism, the sewing machine base mechanism comprises a support frame and a machine table, and the machine table is located on the support frame; the machine head mechanism is located on the machine table, the machine head mechanism comprises a machine needle driving motor, a machine needle transmission shaft assembly, a crankshaft assembly and a needle rod assembly, the machine needle transmission shaft assembly is installed on the machine needle driving motor, the crankshaft assembly is installed on a machine needle transmission shaft, and the needle rod assembly is installed on the crankshaft assembly; the rotating shuttle mechanism comprises a rotating shuttle shaft assembly, and the rotating shuttle shaft assembly is located on the lower side of the machine table; and the transmission mechanism extends to the rear side of the machine table, crosses the machine table and is respectively matched with the machine needle transmission shaft assembly and the rotating shuttle shaft assembly. According to the technical scheme, the problem that a sewing machine in the prior art is difficult to sew large objects is effectively solved.

Description

Technical Field

[0001] This application relates to the technical field of sewing machines, and more particularly, to a sewing machine. Background Art

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on a sewing material, so as to interweave or sew together one or more layers of sewing materials. Sewing machines include sewing machines, stitching machines, embroidery machines, quilting machines, etc.

[0003] The sewing work of a sewing machine is mainly completed by the cooperation of a sewing needle, a presser foot and a rotary hook. The sewing needle and the rotary hook are driven by a single motor, and the transmission structure passes through the machine table. When sewing an object, the sewing machine requires different pushes or spreads the object. Such a structure makes it difficult to sew large objects due to space limitations when sewing large objects. Utility Model Content

[0004] This application provides a sewing machine to solve the problem that it is difficult for the existing sewing machines to sew large objects.

[0005] According to a sewing machine provided by this application, it includes: a sewing machine base mechanism, the sewing machine base mechanism includes a support frame and a machine table, and the machine table is located on the support frame; a head mechanism, the head mechanism is located on the machine table, the head mechanism includes a sewing needle drive motor, a sewing needle transmission shaft assembly, a crankshaft assembly and a needle bar assembly, the sewing needle transmission shaft assembly is installed on the sewing needle drive motor, the crankshaft assembly is installed on the sewing needle transmission shaft, and the needle bar assembly is installed on the crankshaft assembly; a rotary hook mechanism, the rotary hook mechanism includes a rotary hook shaft assembly, and the rotary hook shaft assembly is located under the machine table; a transmission mechanism, the transmission mechanism extends to the rear side of the machine table and spans the machine table, and is respectively matched with the sewing needle transmission shaft assembly and the rotary hook shaft assembly.

[0006] Further, the transmission mechanism includes a first transmission shaft, a first bevel gear and a second bevel gear, the first bevel gear is arranged on the sewing needle transmission shaft assembly, the second bevel gear is arranged at the first end of the first transmission shaft, and the first bevel gear meshes with the second bevel gear.

[0007] Further, the transmission mechanism further includes a third bevel gear, a fourth bevel gear and a second transmission shaft, the third bevel gear is arranged at the second end of the first transmission shaft, the fourth bevel gear is arranged at the first end of the second transmission shaft, the first transmission shaft is horizontally arranged, the second transmission shaft is located at the rear side of the machine table, and the second transmission shaft is vertically arranged.

[0008] Further, the transmission mechanism further includes a fifth bevel gear, a sixth bevel gear and a third transmission shaft, the fifth bevel gear is arranged at the second end of the second transmission shaft, the sixth bevel gear is arranged at the first end of the third transmission shaft, and the third bevel gear is located under the machine table.

[0009] Further, the transmission mechanism further includes a seventh bevel gear, an eighth bevel gear, and a fourth transmission shaft. The seventh bevel gear is disposed at the second end of the third transmission shaft, and the eighth bevel gear is disposed at the first end of the fourth transmission shaft.

[0010] Further, the transmission mechanism further includes a ninth bevel gear, a tenth bevel gear, and a fifth transmission shaft. The ninth bevel gear is disposed at the second end of the fourth transmission shaft, the tenth bevel gear is disposed at the first end of the fifth transmission shaft, and the ninth bevel gear meshes with the tenth bevel gear.

[0011] Further, the transmission mechanism further includes an eleventh bevel gear, a twelfth bevel gear, and a sixth transmission shaft. The eleventh bevel gear is disposed at the second end of the fifth transmission shaft, the twelfth bevel gear is disposed at the first end of the sixth transmission shaft, and the eleventh bevel gear meshes with the twelfth bevel gear.

[0012] Further, the transmission mechanism further includes a thirteenth bevel gear, a fourteenth bevel gear, a fifteenth bevel gear, a sixteenth bevel gear, and a seventh transmission shaft. The thirteenth bevel gear is disposed at the second end of the sixth transmission shaft, the fourteenth bevel gear is disposed at the first end of the seventh transmission shaft, the fifteenth bevel gear is disposed at the second end of the seventh transmission shaft, the sixteenth bevel gear is disposed on the rotating hook shaft assembly, the thirteenth bevel gear meshes with the fourteenth bevel gear, and the fifteenth bevel gear meshes with the sixteenth bevel gear.

[0013] Further, the rotating hook mechanism further includes an axial movement assembly, and the axial movement assembly is connected to the rotating hook shaft assembly to drive the rotating hook shaft assembly to axially move.

[0014] Further, the needle bar assembly includes a needle bar sleeve, a needle bar driving motor, a needle bar, and a sewing needle mounting base. The needle bar sleeve has an internal thread, the needle bar has an external thread, the sewing needle mounting base is mounted at the lower end of the needle bar, the needle bar driving motor cooperates with the needle bar, and the needle bar sleeve is disposed on the crankshaft assembly.

[0015] When the sewing machine works by applying the technical solution of the present application, the sewing needle of the head mechanism moves downward below the machine table and cooperates with the rotating hook mechanism to complete the sewing work. The sewing needle driving motor drives the sewing needle transmission shaft assembly, the sewing needle transmission shaft assembly drives the crankshaft assembly, and then drives the needle bar assembly. At the same time, the sewing needle transmission shaft assembly drives the rotating hook mechanism through the transmission mechanism, so that the sewing needle and the rotating hook are relatively easy to synchronize. The transmission mechanism is located at the rear side of the machine table, thus avoiding the machine table. When sewing an object, the object and the transmission mechanism are not likely to interfere, and the versatility of the sewing machine for sewing objects is relatively good. The technical solution of the present application effectively solves the problem that it is difficult for the existing sewing machine to sew large objects. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings here are incorporated into the description and form a part of this description, showing embodiments consistent with this application and, together with the description, are used to explain the principles of this application.

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the accompanying drawings required for use in the description of the embodiments or the prior art. Obviously, for those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 Showing a schematic plan view of the sewing machine according to Embodiment 1 of this application;

[0019] Figure 2 Showing Figure 1 A schematic plan view of the sewing machine without the support frame;

[0020] Figure 3 Showing Figure 2 A schematic three-dimensional view of the sewing machine;

[0021] Figure 4 Showing Figure 1 A schematic internal view of the sewing machine;

[0022] Figure 5 Showing Figure 4 A schematic three-dimensional view of the sewing machine from another angle.

[0023] Among them, the above-mentioned accompanying drawings include the following reference numerals:

[0024] 10. Sewing machine base mechanism; 11. Support frame; 12. Machine table; 20. Head mechanism; 21. Needle driving motor; 22. Needle transmission shaft assembly; 30. Rotating hook mechanism; 40. Transmission mechanism; 41. First transmission shaft; 42. First bevel gear; 43. Second bevel gear; 44. Third bevel gear; 45. Fourth bevel gear; 46. Second transmission shaft; 47. Fifth bevel gear; 48. Sixth bevel gear; 49. Third transmission shaft; 410. Seventh bevel gear; 411. Eighth bevel gear; 412. Fourth transmission shaft; 413. Ninth bevel gear; 414. Tenth bevel gear; 415. Fifth transmission shaft; 416. Eleventh bevel gear; 417. Twelfth bevel gear; 418. Sixth transmission shaft; 419. Seventh transmission shaft. Detailed implementation manners

[0025] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the accompanying drawings and combine with the embodiments to elaborate on this application in detail.

[0026] It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs.

[0027] For ease of description, spatial relative terms such as "above", "over", "on the upper surface", "upper", etc. may be used herein to describe the spatial positional relationship of one device or feature to other devices or features as shown in the figures. It should be understood that the spatial relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures of the device. For example, if the device in the figure is inverted, a device described as "above" or "over" other devices or structures will then be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both the orientations of "above" and "below". The device can also be positioned in other different ways, rotated 90 degrees or in other orientations, and corresponding interpretations of the spatial relative descriptions used herein are made.

[0028] As Figures 1 to 5 shown, the sewing machine of the first embodiment includes: a sewing machine base mechanism 10, a head mechanism 20, a bobbin case mechanism 30, and a transmission mechanism 40. The sewing machine base mechanism 10 includes a support frame 11 and a machine table 12, and the machine table 12 is located on the support frame 11. The head mechanism 20 is located on the machine table 12, and the head mechanism 20 includes a needle driving motor 21, a needle transmission shaft assembly 22, a crankshaft assembly, and a needle bar assembly. The needle transmission shaft assembly 22 is installed on the needle driving motor 21, the crankshaft assembly is installed on the needle transmission shaft, and the needle bar assembly is installed on the crankshaft assembly. The bobbin case mechanism 30 includes a bobbin case shaft assembly, and the bobbin case shaft assembly is located on the lower side of the machine table 12. The transmission mechanism 40 extends to the rear side of the machine table 12, straddles the machine table 12, and cooperates with the needle transmission shaft assembly 22 and the bobbin case shaft assembly respectively.

[0029] Applying the technical solution of this embodiment, when the sewing machine is working, the sewing needle of the head mechanism 20 runs downward below the machine table 12 and cooperates with the rotary hook mechanism 30 to complete the sewing work. The sewing needle driving motor 21 drives the sewing needle transmission shaft assembly 22, the sewing needle transmission shaft assembly 22 drives the crankshaft assembly, and then drives the needle bar assembly. At the same time, the sewing needle transmission shaft assembly 22 drives the rotary hook mechanism 30 through the transmission mechanism 40, so that the sewing needle of the head mechanism 20 and the rotary hook of the rotary hook mechanism 30 are relatively easy to synchronize. The transmission mechanism 40 crosses the machine table 12 from the rear side of the machine table 12, thus avoiding the machine table 12. When sewing an object, it is not easy for the object and the transmission mechanism 40 to interfere, and the universality of the sewing machine for sewing objects is relatively good. The technical solution of this embodiment effectively solves the problem that it is relatively difficult for the existing sewing machine to sew large objects.

[0030] It should be noted that the side close to the sewing worker's operation is the front side, and the side far from the sewing worker is the rear side.

[0031] As Figure 5 shown, in the technical solution of Embodiment 1, the transmission mechanism 40 includes a first transmission shaft 41, a first bevel gear 42 and a second bevel gear 43. The first bevel gear 42 is arranged on the sewing needle transmission shaft assembly 22, the second bevel gear 43 is arranged at the first end of the first transmission shaft 41, and the first bevel gear 42 meshes with the second bevel gear 43. The settings of the first bevel gear 42 and the second bevel gear 43 change the transmission direction, and the first transmission shaft 41 leads the transmission to the rear side direction of the machine table 12, which provides convenience for sewing large objects. It should be noted that the first transmission shaft 41 is located above the machine table 12 and is parallel to the plane of the machine table 12.

[0032] As Figure 5 shown, in the technical solution of this embodiment, the transmission mechanism 40 further includes a third bevel gear 44, a fourth bevel gear 45 and a second transmission shaft 46. The third bevel gear 44 is arranged at the second end of the first transmission shaft 41, the fourth bevel gear 45 is arranged at the first end of the second transmission shaft 46, the first transmission shaft 41 is arranged horizontally, the second transmission shaft 46 is located at the rear side of the machine table 12, and the second transmission shaft 46 is arranged vertically. The second transmission shaft 46 guides the power from the upper side of the machine table 12 to the lower side of the machine table 12, and the settings of the third bevel gear 44 and the fourth bevel gear 45 change the direction of the power rotation. It should be noted that the axis of the first transmission shaft 41 and the axis of the second transmission shaft 46 are perpendicular to each other. The second transmission shaft 46 has a predetermined distance from the rear side edge of the machine table 12. For example, the predetermined distance is between 10 mm and 160 mm. The transmission mechanism 40 has a housing, and the distance between the rear side surface of the machine table 12 and the outer wall of the housing of the transmission mechanism 40 is between 13 mm and 157 mm, which will not be elaborated here. The housing of other parts of the sewing machine will not be elaborated here either.

[0033] AsFigure 5 As shown, in the technical solution of this embodiment, the transmission mechanism 40 further includes a fifth bevel gear 47, a sixth bevel gear 48, and a third transmission shaft 49. The fifth bevel gear 47 is disposed at the second end of the second transmission shaft 46, the sixth bevel gear 48 is disposed at the first end of the third transmission shaft 49, and the third bevel gear 44 is located below the machine table 12. The lower side of the machine table 12 here refers to the spatial position, which means below the machine table 12, and is not necessarily the projection in the vertical direction and is located within the area projected by the machine table 12. The third transmission shaft 49 is horizontally disposed, and the axis of the third transmission shaft 49 is parallel to the adjacent side of the machine table 12. The setting of the third transmission shaft 49 can, on the one hand, play a role in moving the drive to a suitable position, and on the other hand, can also play a role in buffering and shock absorption.

[0034] As Figure 5 shown, in the technical solution of the first embodiment, the transmission mechanism 40 further includes a seventh bevel gear 410, an eighth bevel gear 411, and a fourth transmission shaft 412. The seventh bevel gear 410 is disposed at the second end of the third transmission shaft 49, and the eighth bevel gear 411 is disposed at the first end of the fourth transmission shaft 412. The fourth transmission shaft 412 transmits power to directly below the machine table 12, that is, the second end of the fourth transmission shaft 412 is located within the projection of the machine table 12.

[0035] As Figure 5 shown, in the technical solution of the first embodiment, the transmission mechanism 40 further includes a ninth bevel gear 413, a tenth bevel gear 414, and a fifth transmission shaft 415. The ninth bevel gear 413 is disposed at the second end of the fourth transmission shaft 412, the tenth bevel gear 414 is disposed at the first end of the fifth transmission shaft 415, and the ninth bevel gear 413 and the tenth bevel gear 414 are engaged with each other. The setting of the fifth transmission shaft 415 guides the power to the rotary hook shaft assembly.

[0036] As Figure 5 shown, in the technical solution of the first embodiment, the transmission mechanism 40 further includes an eleventh bevel gear 416, a twelfth bevel gear 417, and a sixth transmission shaft 418. The eleventh bevel gear 416 is disposed at the second end of the fifth transmission shaft 415, the twelfth bevel gear 417 is disposed at the first end of the sixth transmission shaft 418, and the eleventh bevel gear 416 and the twelfth bevel gear 417 are engaged with each other. Through the setting of the fifth transmission shaft 415 and the sixth transmission shaft 418, other sewing components can be well avoided.

[0037] As Figure 5As shown, in the technical solution of the first embodiment, the transmission mechanism 40 further includes a thirteenth bevel gear, a fourteenth bevel gear, a fifteenth bevel gear, a sixteenth bevel gear and a seventh transmission shaft 419. The thirteenth bevel gear is arranged at the second end of the sixth transmission shaft 418. The fourteenth bevel gear is arranged at the first end of the seventh transmission shaft 419. The fifteenth bevel gear is arranged at the second end of the seventh transmission shaft 419. The sixteenth bevel gear is arranged on the rotating shuttle shaft assembly. The thirteenth bevel gear meshes with the fourteenth bevel gear, and the fifteenth bevel gear meshes with the sixteenth bevel gear.

[0038] In the technical solution of the first embodiment, the rotating shuttle mechanism 30 further includes an axial movement assembly, and the axial movement assembly is connected to the rotating shuttle shaft assembly to drive the rotating shuttle shaft assembly to move axially. Since the adjustment distance is relatively small when the rotating shuttle of the sewing machine cooperates with the sewing needle, the cooperation between the gears can meet the requirement, and there is no need to reset the gear structure of the dedicated transmission mechanism 40.

[0039] In the technical solution of the first embodiment, the needle bar assembly includes a needle bar sleeve, a needle bar driving motor, a needle bar and a sewing needle mounting base. The needle bar sleeve has an internal thread, the needle bar has an external thread, the sewing needle mounting base is installed at the lower end of the needle bar, the needle bar driving motor cooperates with the needle bar, and the needle bar sleeve is arranged on the crankshaft assembly. By converting rotation into the up-and-down movement of the needle bar, the up-and-down position of the sewing needle is adjusted. The needle bar driving motor and the needle bar transmit power through spur gears. When the needle bar moves up and down, the needle bar driving motor does not move. That is, the needle bar is equipped with a first gear, the needle bar driving motor is equipped with a second gear, the axes of the first gear and the second gear are both vertically arranged, and the first gear meshes with the second gear.

[0040] The difference between the technical solution of the second embodiment and the technical solution of the first embodiment is that only two transmission shafts are required for the transmission mechanism 40 in the second embodiment, that is, the first transmission shaft and the second transmission shaft remain unchanged (the unchanged here means keeping the first transmission shaft and the second transmission shaft, but their lengths or extended positions can change). The rotating shuttle shaft of the rotating shuttle shaft assembly is directly matched with the second end of the second transmission shaft through gears (which can be bevel gears or multiple gear sets, and are not limited here).

[0041] The difference between the technical solution of the third embodiment and the technical solution of the first embodiment is that the transmission mechanism 40 in the third embodiment has three transmission shafts. The second end of the third transmission shaft is located at the lower part of the machine table 12 and is installed with a spur gear. The rotating shuttle shaft of the rotating shuttle shaft assembly has a spur gear that cooperates with this spur gear.

[0042] The difference between the technical solution of the fourth embodiment and the technical solution of the first embodiment is that the transmission mechanism 40 in the technical solution of the fourth embodiment has four transmission shafts. The second end of the fourth transmission shaft is a spur gear, and the rotating shuttle shaft of the rotating shuttle shaft assembly has a spur gear that cooperates with this spur gear.

[0043] The technical solution of the fifth embodiment is different from that of the first embodiment in that the transmission mechanism 40 of the technical solution of the fifth embodiment has five transmission shafts. The second end of the fifth transmission shaft is a spur gear, and the shuttle shaft of the shuttle shaft assembly has a spur gear that mates with this spur gear.

[0044] The technical solution of the sixth embodiment is different from that of the first embodiment in that the transmission mechanism 40 of the technical solution of the sixth embodiment has six transmission shafts. The second end of the sixth transmission shaft is a spur gear, and the shuttle shaft of the shuttle shaft assembly has a spur gear that mates with this spur gear.

[0045] The extending direction (central axis) of the spur gears in the second to sixth embodiments described above is consistent with the axial direction of the shuttle shaft.

[0046] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly dictates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0047] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0048] The above are only the preferred embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included within the protection scope of the present application.

Claims

1. A sewing machine, characterized in that, Comprising: A sewing machine base mechanism (10), the sewing machine base mechanism (10) includes a support frame (11) and a machine table (12), and the machine table (12) is located on the support frame (11); A head mechanism (20), the head mechanism (20) is located on the machine table (12), the head mechanism (20) includes a needle driving motor (21), a needle transmission shaft assembly (22), a crankshaft assembly and a needle bar assembly, the needle transmission shaft assembly (22) is installed on the needle driving motor (21), the crankshaft assembly is installed on the needle transmission shaft, and the needle bar assembly is installed on the crankshaft assembly; A rotary hook mechanism (30), the rotary hook mechanism (30) includes a rotary hook shaft assembly, and the rotary hook shaft assembly is located below the machine table (12); A transmission mechanism (40), the transmission mechanism (40) extends to the rear side of the machine table (12) across the machine table (12) and is respectively matched with the needle transmission shaft assembly (22) and the rotary hook shaft assembly.

2. The sewing machine according to claim 1, characterized in that The transmission mechanism (40) includes a first transmission shaft (41), a first bevel gear (42) and a second bevel gear (43), the first bevel gear (42) is arranged on the needle transmission shaft assembly (22), the second bevel gear (43) is arranged at the first end of the first transmission shaft (41), and the first bevel gear (42) meshes with the second bevel gear (43).

3. The sewing machine according to claim 2, wherein The transmission mechanism (40) further includes a third bevel gear (44), a fourth bevel gear (45) and a second transmission shaft (46), the third bevel gear (44) is arranged at the second end of the first transmission shaft (41), the fourth bevel gear (45) is arranged at the first end of the second transmission shaft (46), the first transmission shaft (41) is horizontally arranged, the second transmission shaft (46) is located at the rear side of the machine table (12), and the second transmission shaft (46) is vertically arranged.

4. The sewing machine according to claim 3, wherein The transmission mechanism (40) further includes a fifth bevel gear (47), a sixth bevel gear (48) and a third transmission shaft (49), the fifth bevel gear (47) is arranged at the second end of the second transmission shaft (46), the sixth bevel gear (48) is arranged at the first end of the third transmission shaft (49), and the third bevel gear (44) is located below the machine table (12).

5. The sewing machine according to claim 4, characterized in that, The transmission mechanism (40) further includes a seventh bevel gear (410), an eighth bevel gear (411) and a fourth transmission shaft (412), the seventh bevel gear (410) is arranged at the second end of the third transmission shaft (49), and the eighth bevel gear (411) is arranged at the first end of the fourth transmission shaft (412).

6. The sewing machine according to claim 5, characterized in that The transmission mechanism (40) further includes a ninth bevel gear (413), a tenth bevel gear (414) and a fifth transmission shaft (415), the ninth bevel gear (413) is arranged at the second end of the fourth transmission shaft (412), the tenth bevel gear (414) is arranged at the first end of the fifth transmission shaft (415), and the ninth bevel gear (413) meshes with the tenth bevel gear (414).

7. The sewing machine according to claim 6, wherein, The transmission mechanism (40) further includes an eleventh bevel gear (416), a twelfth bevel gear (417) and a sixth transmission shaft (418). The eleventh bevel gear (416) is arranged at the second end of the fifth transmission shaft (415), the twelfth bevel gear (417) is arranged at the first end of the sixth transmission shaft (418), and the eleventh bevel gear (416) meshes with the twelfth bevel gear (417).

8. The sewing machine according to claim 7, characterized in that, The transmission mechanism (40) further includes a thirteenth bevel gear, a fourteenth bevel gear, a fifteenth bevel gear, a sixteenth bevel gear and a seventh transmission shaft (419). The thirteenth bevel gear is arranged at the second end of the sixth transmission shaft (418), the fourteenth bevel gear is arranged at the first end of the seventh transmission shaft (419), the fifteenth bevel gear is arranged at the second end of the seventh transmission shaft (419), the sixteenth bevel gear is arranged on the rotating hook shaft assembly. The thirteenth bevel gear meshes with the fourteenth bevel gear, and the fifteenth bevel gear meshes with the sixteenth bevel gear.

9. The sewing machine according to any one of claims 1 to 8, characterized in that, The rotating hook mechanism (30) further includes an axial movement assembly, and the axial movement assembly is connected to the rotating hook shaft assembly to drive the rotating hook shaft assembly to move axially.

10. The sewing machine according to any one of claims 1 to 8, characterized in that, The needle bar assembly includes a needle bar sleeve, a needle bar driving motor, a needle bar and a machine needle mounting seat. The needle bar sleeve has an internal thread, the needle bar has an external thread, the machine needle mounting seat is mounted at the lower end of the needle bar, the needle bar driving motor cooperates with the needle bar, and the needle bar sleeve is arranged on the crankshaft assembly.

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