Feeding mechanism and sewing machine with same

Abstract

The utility model provides a feeding mechanism and a sewing machine with the feeding mechanism. The feeding mechanism comprises a base and a feeding mechanism, the mounting seat is arranged below the base; the motor component is detachably installed on the side face of the installation base, an output shaft of the motor component is arranged in the transverse direction and arranged on the installation base in a penetrating mode, and a transmission component is adjustably arranged on the output shaft in the extending direction of the output shaft; the transmission assembly is arranged on the base in the vertical direction, one end of the transmission assembly is in transmission connection with the transmission component, and the other end of the transmission assembly is in transmission connection with a feeding assembly, so that the motor component drives at least part of the feeding assembly to rotate through the transmission assembly; therefore, the problem that the stepping motor of the feeding mechanism of the sewing machine is inconvenient to assemble and maintain in the prior art is solved.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine feeding technology, and more specifically, to a feeding mechanism and a sewing machine having the same. Background Technology

[0002] Currently, existing technologies use stepper motors to drive the lower feeding structure through a transmission mechanism. The feeding mechanism of a typical sewing machine includes an upper feeding mechanism and a lower feeding mechanism. The upper feeding mechanism is driven by the movement of the presser foot or rollers, while the lower feeding mechanism is driven by the movement of the lower feed dog or rollers. The feeding mechanism of a roller-driven sewing machine is a roller feeding mechanism, where rollers press the fabric together and another feed roller or presser foot moves together to transport the fabric.

[0003] However, in related technologies, the feeding mechanism involves a lower feeding motor fixedly connected to an integrated column and located on the outside of the column. Because the column houses the lower feeding roller drive assembly, the integrated column design requires high machining precision, placing excessive demands on the machining precision of the parts. Consequently, it becomes impossible to pre-assemble the motor into the small assembly of the column during assembly, leading to inconvenience during the assembly and maintenance of the lower feeding stepper motor. Utility Model Content

[0004] The main objective of this invention is to provide a feeding mechanism and a sewing machine having the same, so as to solve the problem of inconvenience in assembling and maintaining the stepper motor of the feeding mechanism of the sewing machine in the prior art.

[0005] To achieve the above objectives, according to one aspect of the present invention, a feeding mechanism is provided, comprising: a base; a mounting base disposed below the base; a motor component detachably mounted on the side of the mounting base, the output shaft of the motor component being arranged in a transverse direction and passing through the mounting base, and a transmission component whose position is adjustable along its extension direction being disposed on the output shaft; and a transmission assembly disposed in a vertical direction on the base, one end of the transmission assembly being drively connected to the transmission component, and the other end of the transmission assembly being drively connected to a feeding assembly, so that the motor component drives at least a portion of the feeding assembly to rotate through the transmission assembly.

[0006] Furthermore, the base is provided with a mounting bracket, and the transmission component is set inside the mounting bracket. The transmission component includes a transmission shaft, the two ends of which are respectively connected to the transmission component and the feeding component, so that the motor component drives the transmission shaft to rotate to drive the feeding component to rotate.

[0007] Furthermore, the drive shaft includes a first shaft segment and a second shaft segment, which are connected by a connecting block.

[0008] Furthermore, the transmission component is a bevel gear. The end of the first shaft segment away from the second shaft segment passes through the base and is provided with a first bevel gear. The first bevel gear meshes with the transmission component so that the motor component drives the transmission shaft to rotate and drives the feeding assembly to rotate.

[0009] Furthermore, a second bevel gear is provided at the end of the second shaft segment away from the first shaft segment. The feeding assembly includes: a feeding roller, which is mounted on a mounting bracket; and a third bevel gear, which is coaxially connected to the feeding roller. The third bevel gear and the second bevel gear mesh with each other so that the drive shaft drives the feeding roller to rotate.

[0010] Furthermore, the tooth flank clearance when the transmission component meshes with the first bevel gear is a preset distance; wherein, the preset distance L satisfies: 0.2mm≤L≤0.4mm.

[0011] Furthermore, the transmission shaft is provided with a first bushing and a second bushing, the first bushing being sleeved on at least a portion of the first shaft segment and the connecting block, and the second bushing being sleeved on at least another portion of the second shaft segment and the connecting block.

[0012] Furthermore, the central axis of the drive shaft is set at a preset angle with the vertical direction; wherein the preset angle α satisfies: 5°≤a≤8°.

[0013] Furthermore, the third bevel gear can be disengaged from and engaged with the second bevel gear.

[0014] According to another aspect of the present invention, a sewing machine is provided, including the aforementioned feeding mechanism.

[0015] The feeding mechanism using the technical solution of this utility model includes a base, a mounting base, a motor component, and a transmission assembly. The mounting base is located below the base. The motor component is detachably mounted on the side of the mounting base. The output shaft of the motor component is arranged in the transverse direction and passes through the mounting base. A transmission component is adjustablely arranged on the output shaft along its extension direction. The transmission assembly is arranged in the vertical direction on the base. One end of the transmission assembly is connected to the transmission component, and the other end of the transmission assembly is connected to the feeding assembly, so that the motor component drives at least a portion of the feeding assembly to rotate through the transmission assembly. In this way, a mounting base is detachably installed below the base. The output shaft of the motor component passes through the mounting base and is connected to the feeding component via a transmission assembly. This facilitates the replacement and maintenance of the motor component during use. Furthermore, the transmission assembly is adjustablely connected to the transmission component on the output shaft of the motor component, ensuring a more stable connection between the transmission assembly and the transmission component after disassembly and reinstallation. This, in turn, achieves the movement of the feeding component through a series of transmissions. This solves the problems of inconvenient assembly and maintenance of stepper motors in sewing machine feeding mechanisms and the inability to guarantee precise transmission connections between the motor component and the transmission assembly in existing technologies. Simultaneously, through the coordinated work of all components, the feeding mechanism of this application achieves accurate and stable material feeding, effectively extending the service life of the equipment and improving the user experience. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0017] Figure 1 A schematic diagram of the overall structure provided by an embodiment of the feeding mechanism according to the present invention is shown;

[0018] Figure 2 A side sectional view is shown, provided for an embodiment of the feeding mechanism according to the present invention.

[0019] The above figures include the following reference numerals:

[0020] 10. Base; 11. Mounting bracket; 20. Mounting seat; 30. Motor components; 31. Transmission components; 40. Transmission assembly; 41. Transmission shaft; 42. First shaft segment; 420. First bevel gear; 43. Second shaft segment; 430. Second bevel gear; 44. Connecting block; 45. First bushing; 46. Second bushing; 50. Feeding assembly; 51. Feeding roller; 52. Third bevel gear. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To address the inconvenience of assembling and maintaining the stepper motor of the feeding mechanism in existing sewing machines, this utility model provides a feeding mechanism and a sewing machine with it.

[0023] Please refer to Figure 1 and Figure 2 As shown, in one aspect of the technical solution of this utility model, the feeding mechanism includes a base 10, a mounting base 20, a motor component 30, and a transmission assembly 40; the mounting base 20 is disposed below the base 10; the motor component 30 is detachably mounted on the side of the mounting base 20, the output shaft of the motor component 30 is arranged in the transverse direction and passes through the mounting base 20, and a transmission component 31 is provided on the output shaft, the position of which is adjustable along its extension direction; the transmission assembly 40 is arranged in the vertical direction on the base 10, one end of the transmission assembly 40 is connected to the transmission component 31, and the other end of the transmission assembly 40 is connected to the feeding assembly 50, so that the motor component 30 drives at least a portion of the feeding assembly 50 to rotate through the transmission assembly 40.

[0024] Applying the technical solution of this embodiment, a mounting base 20 is detachably installed below the base 10. The output shaft of the motor component 30 passes through the mounting base 20 and is connected to the feeding component 50 via the transmission assembly 40. This facilitates the replacement and maintenance of the motor component 30 during use. Furthermore, the transmission component 31 is adjustablely connected to the transmission assembly 40 on the output shaft of the motor component 30, ensuring a more stable connection between the transmission component 31 and the transmission assembly 40 after disassembly and reinstallation of the motor component 30. This, in turn, achieves the movement of the feeding component 50 through a series of transmissions. This solves the problems of inconvenient assembly and maintenance of the stepper motor in the sewing machine feeding mechanism in the prior art, as well as the inability to guarantee a precise transmission connection between the motor component 30 and the transmission assembly 40. Simultaneously, through the coordinated work of each component, the feeding mechanism of this application achieves accurate and stable material feeding, effectively extends the service life of the equipment, and improves the user experience.

[0025] In this embodiment, the motor component 30 is a stepper motor. The mounting base 20 is provided with a mounting groove on one side of the motor component 30, at least a portion of the motor component 30 is disposed in the mounting groove, and the output shaft of the motor component 30 passes through the bottom of the mounting groove and is connected to the transmission assembly 40.

[0026] In this embodiment, a mounting bracket 11 is provided on the base 10, and a transmission assembly 40 is disposed within the mounting bracket 11. The transmission assembly 40 includes a transmission shaft 41, with both ends of the transmission shaft 41 connected to a transmission component 31 and a feeding assembly 50, respectively, so that the motor component 30 drives the transmission shaft 41 to rotate, thereby driving the feeding assembly 50 to rotate. In this way, the mounting bracket 11 can protect the transmission assembly 40 and prevent external interference. One end of the transmission shaft 41 is connected to the transmission component 31, and the other end of the transmission shaft 41 is connected to at least a portion of the feeding assembly 50. Thus, the motor component 30 drives the transmission shaft 41 to rotate, thereby driving at least a portion of the feeding assembly 50 to work, thereby realizing the feeding of the sewing material.

[0027] Specifically, the drive shaft 41 includes a first shaft segment 42 and a second shaft segment 43, which are connected by a connecting block 44. In this way, the motor component 30 is connected to the first shaft segment 42 of the drive shaft 41, and the second shaft segment 43 of the drive shaft 41 is at least partially connected to the feeding assembly 50. This segmented design simplifies the assembly and maintenance of the drive shaft 41, while the use of the connecting block 44 ensures the overall rigidity and stability of the drive shaft 41.

[0028] like Figure 1 and Figure 2 As shown, specifically, the transmission component 31 is a bevel gear. The end of the first shaft segment 42 furthest from the second shaft segment 43 passes through the base 10 and is equipped with a first bevel gear 420. The first bevel gear 420 meshes with the transmission component 31, causing the motor component 30 to drive the transmission shaft 41 to rotate and thus rotate the feeding assembly 50. With this configuration, when the output shaft of the motor component 30 rotates, it drives the transmission component 31 (which is a bevel gear) to mesh with the first bevel gear 420 on the transmission shaft 41, thereby causing the transmission shaft 41 to rotate and drive the feeding assembly 50 to work. Thus, the bevel gear design effectively reduces energy loss during transmission and improves power transmission efficiency. Simultaneously, the special structure of the bevel gear allows the feeding mechanism to adapt to different spatial layout requirements, providing greater flexibility for machine integration and installation. In practical applications, this design is particularly suitable for space-constrained production lines, enabling stable and efficient material transfer in a compact layout.

[0029] Specifically, a second bevel gear 430 is provided at the end of the second shaft segment 43 away from the first shaft segment 42. The feeding assembly 50 includes a feeding roller 51 and a third bevel gear 52. The feeding roller 51 is mounted on the mounting bracket 11. The third bevel gear 52 is coaxially connected to the feeding roller 51, and the third bevel gear 52 meshes with the second bevel gear 430, so that the drive shaft 41 drives the feeding roller 51 to rotate. In this way, when the motor component 30 drives the drive shaft 41 to rotate, it drives the second bevel gear 430 and the third bevel gear 52 of the second shaft segment 43 to mesh with each other, thereby driving the feeding roller 51 to rotate, so as to achieve precise delivery of the sewing material.

[0030] In this embodiment, the tooth flank clearance when the transmission component 31 meshes with the first bevel gear 420 is a preset distance; wherein, the preset distance L satisfies: 0.2mm≤L≤0.4mm. Thus, when the motor component 30 is installed or replaced and then reinstalled, to ensure optimal meshing between the transmission component 31 (which has a bevel gear on its output shaft) and the transmission assembly 40, the tooth flank clearance is adjusted to the preset distance by adjusting the lateral direction of the transmission component 31 on the output shaft of the motor component 30. This ensures smooth transmission and efficiency, preventing instability or energy loss caused by excessively large or small gear clearance. Specifically, the position of the transmission component 31 can be adjusted using fine-tuning screws or locating pins, allowing the tooth flank clearance to be precisely set within the preset distance, thereby improving the accuracy and efficiency of the transmission between the motor component 30 and the transmission assembly 40.

[0031] Specifically, the drive shaft 41 is provided with a first bushing 45 and a second bushing 46. The first bushing 45 is fitted onto at least a portion of the first shaft segment 42 and the connecting block 44, and the second bushing 46 is fitted onto at least another portion of the second shaft segment 43 and the connecting block 44. In this configuration, both the first bushing 45 and the second bushing 46 are made of wear-resistant material, thereby enhancing the connection stability between the first shaft segment 42 and the second shaft segment 43 and the connecting block 44, as well as the durability of the drive shaft 41. This effectively reduces axial or radial displacement during transmission, ensuring the rigidity and stability of the drive shaft 41 during operation. Furthermore, if a shaft segment or connecting block 44 is damaged, only one of them needs to be replaced without affecting other parts, reducing maintenance costs and time.

[0032] In this embodiment, the central axis of the transmission shaft 41 is set at a preset angle with the vertical direction; wherein the preset angle α satisfies: 5°≤a≤8°. This reduces the friction between the transmission shaft 41 and the bevel gear during transmission, thereby improving transmission efficiency. Furthermore, this small angle change significantly reduces energy loss, especially during long-term continuous operation. Simultaneously, the tilt of the transmission shaft 41 relative to the vertical direction adjusts the contact point during bevel gear meshing, preventing resonance caused by improper gear meshing, reducing vibration and noise during transmission, and thus improving the operational stability of the machine.

[0033] Specifically, the third bevel gear 52 can be disengaged from the second bevel gear 430. In this way, when feeding is not required, the third bevel gear 52 disengages from the second bevel gear 430, thereby avoiding idling losses of the motor component 30 and improving energy utilization efficiency.

[0034] In another aspect of the technical solution of this utility model, a sewing machine is provided, including the aforementioned feeding mechanism.

[0035] As can be seen from the above description, the embodiments of this utility model achieve the following technical effects:

[0036] The feeding mechanism includes a base 10, a mounting base 20, a motor component 30, and a transmission assembly 40. The mounting base 20 is located below the base 10. The motor component 30 is detachably mounted on the side of the mounting base 20. The output shaft of the motor component 30 is arranged in the transverse direction and passes through the mounting base 20. A transmission component 31 is adjustablely arranged on the output shaft along its extension direction. The transmission assembly 40 is arranged in the vertical direction on the base 10. One end of the transmission assembly 40 is connected to the transmission component 31, and the other end of the transmission assembly 40 is connected to the feeding assembly 50, so that the motor component 30 drives at least a portion of the feeding assembly 50 to rotate through the transmission assembly 40. In this way, a mounting base 20 is detachably installed below the base 10. The output shaft of the motor component 30 passes through the mounting base 20 and is connected to the feeding component 50 via the transmission assembly 40. This facilitates the replacement and maintenance of the motor component 30 during use. Furthermore, the transmission component 31 is adjustablely connected to the transmission assembly 40 on the output shaft of the motor component 30, ensuring a more stable connection between the transmission component 31 and the transmission assembly 40 after disassembly and reinstallation of the motor component 30. This, in turn, achieves the movement of the feeding component 50 through a series of transmissions. This solves the problems of inconvenient assembly and maintenance of the stepper motor in the sewing machine feeding mechanism in the prior art, as well as the inability to guarantee a precise transmission connection between the motor component 30 and the transmission assembly 40. Simultaneously, through the coordinated work of all components, the feeding mechanism of this application achieves accurate and stable material feeding, effectively extending the service life of the equipment and improving the user experience.

[0037] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0038] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0039] In the description of this utility model, it should be understood that the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner and outer contours of each component itself.

[0040] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A feeding mechanism, characterized in that, include: Base (10); Mounting base (20) is disposed below the base (10), and mounting bracket (11) is provided on the base (10). Mounting base (20) and mounting bracket (11) are detachably connected to the base (10). The motor component (30) is detachably mounted on the side of the mounting base (20). The output shaft of the motor component (30) is arranged in a horizontal direction and passes through the mounting base (20). The output shaft is provided with a transmission component (31) whose position is adjustable along its extension direction. A transmission assembly (40) is vertically mounted on the base (10). One end of the transmission assembly (40) is connected to the transmission component (31), and the other end of the transmission assembly (40) is connected to a feeding assembly (50), so that the motor component (30) drives at least a portion of the feeding assembly (50) to rotate through the transmission assembly (40). The transmission assembly (40) is disposed in the mounting bracket (11). The transmission assembly (40) includes a transmission shaft (41), the two ends of which are respectively connected to the transmission component (31) and the feeding assembly (50) so that the motor component (30) drives the transmission shaft (41) to rotate and drive the feeding assembly (50) to rotate. The central axis of the transmission shaft (41) is set at a preset angle with the vertical direction; wherein the preset angle a satisfies: 5°≤a≤8°; The drive shaft (41) includes a first shaft segment (42) and a second shaft segment (43), which are connected by a connecting block (44); the transmission component (31) is a bevel gear, and the end of the first shaft segment (42) away from the second shaft segment (43) passes through the base (10) and is provided with a first bevel gear (420). The first bevel gear (420) meshes with the transmission component (31) so that the motor component (30) drives the drive shaft (41) to rotate and drives the feeding assembly (50) to rotate; The tooth flank clearance when the transmission component (31) meshes with the first bevel gear (420) is a preset distance; wherein the preset distance L satisfies: 0.2mm≤L≤0.4mm.

2. The feeding mechanism according to claim 1, characterized in that, The second shaft segment (43) has a second bevel gear (430) at one end away from the first shaft segment (42), and the feeding assembly (50) includes: Feeding roller (51) is mounted on the mounting bracket (11); The third bevel gear (52) is coaxially connected with the feeding roller (51), and the third bevel gear (52) meshes with the second bevel gear (430) so that the transmission shaft (41) drives the feeding roller (51) to rotate.

3. The feeding mechanism according to claim 1, characterized in that, The drive shaft (41) is provided with a first bushing (45) and a second bushing (46). The first bushing (45) is sleeved on at least a portion of the first shaft segment (42) and the connecting block (44), and the second bushing (46) is sleeved on at least another portion of the second shaft segment (43) and the connecting block (44).

4. The feeding mechanism according to claim 2, characterized in that, The third bevel gear (52) can be disengaged from the second bevel gear (430).

5. A sewing machine, characterized in that, Includes the feeding mechanism as described in any one of claims 1 to 4.

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