CN218466083U

CN218466083U - Cloth feeding amount adjusting mechanism of sewing machine

Info

Publication number: CN218466083U
Application number: CN202222374114.5U
Authority: CN
Inventors: 陈良育; 苏瑞华
Original assignee: Zhongshan Gangyuan Technology Corp
Current assignee: Zhongshan Gangyuan Technology Corp
Priority date: 2022-09-07
Filing date: 2022-09-07
Publication date: 2023-02-10
Anticipated expiration: 2032-09-07

Abstract

The utility model discloses a sewing machine work feed volume adjustment mechanism, including the installation frame, rotate on the installation frame and be connected with work feed subassembly and regulating spindle, work feed subassembly and a U-shaped frame rotate to be connected, be equipped with a guide post on the U-shaped frame, be equipped with on the regulating spindle and make the regulating spindle take place rotatory first piece that resets, the one end of regulating spindle is equipped with along with the rotatory direction spout of regulating spindle, the guide post plug-in the direction spout and can slide in the direction spout, still be equipped with the adjusting part who is used for controlling the rotation angle of regulating spindle in the installation frame, the adjusting part includes the rotatory step motor of regulating wheel and control regulating wheel, be equipped with the regulation inclined plane of extending along the axial spiral of regulating wheel on the regulating wheel, the week side of regulating spindle is equipped with the swing arm that outwards stretches out, swing arm and regulation inclined plane overlap joint to can follow the slip of adjusting inclined plane. The utility model discloses a more user demands of user are satisfied in the infinitely variable control of regulating spindle rotation angle.

Description

Cloth feeding amount adjusting mechanism of sewing machine

Technical Field

The utility model relates to a sewing machine technical field, concretely relates to sewing machine work feed volume adjustment mechanism.

Background

The cloth feeding teeth are arranged on part of sewing machine models, and the cloth feeding amount of the cloth feeding teeth needs to be adjusted according to the thickness and the material of sewing cloth in the using process so as to meet the sewing requirement.

China realizes novel patent (grant notice No. CN 216585534) and discloses a structure of control sewing machine work feed length, include, including first installing support, it is connected with the work feed subassembly to rotate on the first installing support, the work feed subassembly rotates with a U type link and is connected, U type link is formed with a guide post, it still is connected with the work feed axle to rotate on the first installing support, the one end of work feed axle is connected with a work feed spout, the guide post plug-in the work feed spout, the other end of work feed axle is connected with a swing arm, the work feed epaxial cup joint makes the work feed axle takes place the first elastic component of rotation trend, the swing arm is formed with a column arch, the column arch is laminated with gear adjusting component slip, changes the position of work feed spout through adjusting gear adjusting component to adjust the work feed volume of work feed subassembly. The gear adjusting assembly controls the rotation of the cloth feeding shaft in a way that the gear and the rack are matched, so that the adjusting precision is limited, the flexibility is poor, and more use requirements of users are difficult to meet.

SUMMERY OF THE UTILITY MODEL

The utility model discloses to the disappearance that prior art exists, provide a sewing machine work feed volume adjustment mechanism, its infinitely variable control that can realize the work feed volume obtains the change of more work feed volumes, satisfies more requirements of making up, makes the user obtain better use and experiences.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a sewing machine work feed volume adjustment mechanism, includes the installation frame, it is connected with work feed subassembly and regulating spindle to rotate in the installation frame, work feed subassembly rotates with a U-shaped frame and is connected, be equipped with a guide post on the U-shaped frame, be equipped with on the regulating spindle and make the regulating spindle take place rotatory first piece that resets, the one end of regulating spindle is equipped with the rotatory direction spout along with the regulating spindle, the guide post plug-in the direction spout and can slide in the direction spout, still be equipped with the adjusting part who is used for controlling the rotation angle of regulating spindle in the installation frame, the adjusting part includes the rotatory step motor of regulating wheel and control regulating wheel, be equipped with the regulation inclined plane of extending along the axial spiral of regulating wheel on the regulating wheel, the week side of regulating spindle is equipped with the swing arm that outwards stretches out, swing arm and regulation inclined plane overlap joint to can follow the slip of regulation inclined plane. Through adopting step motor to drive the regulating wheel rotatory to and set up the regulation inclined plane that the spiral extends on the regulating wheel, utilize the characteristics of adjusting the inclined plane and extending from low to high linearity, thereby the stepless regulation of regulating spindle rotation angle is realized with the cooperation of swing arm in the rotatory in-process accessible of regulating wheel, and then make the direction spout change inclination, thereby obtain the change of numerous feed amount, improved the flexibility that the sewing machine used, satisfy more user demands of user, make the user obtain better use experience.

As a preferred scheme, the regulating wheel is rotatably installed in one side of regulating spindle through first pivot, step motor's output shaft has the driving gear, the week side of regulating wheel is equipped with driven gear, step motor drives the regulating wheel rotation through driving gear and driven gear meshing.

Preferably, a second reset piece is arranged between the first rotating shaft and the U-shaped frame, and the guide column is always kept in the guide sliding groove.

As a preferred scheme, first piece that resets is the torsional spring, the one end and the installation frame joint of torsional spring, the other end and direction spout joint, when the torsional spring makes the regulating spindle take place to rotate, the swing arm slides with the regulation inclined plane and laminates.

As a preferred scheme, the second reset piece is a tension spring, one end of the tension spring is connected with the first rotating shaft, and the other end of the tension spring is connected with the U-shaped frame.

As a preferred scheme, the cloth feeding assembly comprises a cloth feeding swing frame, a cloth feeding tooth frame and cloth feeding teeth, one side of the lower end of the cloth feeding swing frame is rotatably connected with the installation rack through a second rotating shaft, the cloth feeding tooth frame is fixedly connected with the cloth feeding swing frame, the cloth feeding teeth are arranged at the upper end of the cloth feeding tooth frame, and one side of the cloth feeding swing frame is further rotatably connected with one end, far away from the guide post, of the U-shaped frame.

Preferably, the cloth feeding assembly is driven by a driving assembly arranged on the mounting rack.

As a preferable scheme, the driving assembly comprises a lower driving shaft, a cam is arranged on the lower driving shaft, and the outer peripheral surface of the cam is in interference connection with the inner side surface of the U-shaped frame.

Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly speaking, it is rotatory through adopting step motor to drive the regulating wheel, and set up the regulation inclined plane that the spiral extends on the regulating wheel, utilize the characteristics of adjusting the inclined plane by low to high linear extension, thereby realize the infinitely variable control of regulating spindle rotation angle in the cooperation of the rotatory in-process accessible of regulating wheel regulation inclined plane and swing arm, and then make the direction spout change inclination, thereby it changes to obtain the countless volume of sending the cloth, the flexibility that the sewing machine used has been improved, satisfy more user demands of user, the user obtains better use experience.

To more clearly illustrate the structural features and technical means of the present invention and the specific objects and functions achieved thereby, the present invention will be described in further detail with reference to the accompanying drawings and specific embodiments:

drawings

FIG. 1 is a schematic view of the structure of the embodiment of the present invention mounted on a sewing machine;

FIG. 2 is a schematic view of an assembly structure according to an embodiment of the present invention;

FIG. 3 is a schematic view of an assembly structure according to another aspect of the present invention;

the attached drawings indicate the following:

10. casing 11, mounting frame 12, first rotating shaft

13. Second rotating shaft 14, tension spring 20 and adjusting shaft

21. Guide chute 22, torsion spring 23 and swing arm

30. U-shaped frame 31, guide post 40 and regulating wheel

41. Adjusting inclined plane 42, driven gear 50 and stepping motor

51. Driving gear 60, cloth feeding swing frame 70, and cloth feeding tooth frame

71. Feed dog 80, lower drive shaft 81, cam.

Detailed Description

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as appropriate by those of ordinary skill in the art.

As shown in fig. 1-3, a cloth feeding amount adjusting mechanism for a sewing machine includes an installation frame 11 disposed in a casing 10 of the sewing machine, the installation frame 11 is rotatably connected with a cloth feeding assembly and an adjusting shaft 20, the cloth feeding assembly is rotatably connected with a U-shaped frame 30, the U-shaped frame 30 is provided with a guiding column 31, the adjusting shaft 20 is provided with a first reset member for rotating the adjusting shaft 20, one end of the adjusting shaft 20 is provided with a guiding chute 21 rotating with the adjusting shaft 20, the guiding column 31 is inserted into the guiding chute 21 and can slide in the guiding chute 21, the installation frame 11 is further provided with an adjusting assembly for controlling a rotation angle of the adjusting shaft 20, the adjusting assembly includes an adjusting wheel 40 and a stepping motor 50 for controlling the rotation of the adjusting wheel 40, the adjusting wheel 40 is provided with an adjusting inclined surface 41 spirally extending along an axial direction of the adjusting wheel 40, a swing arm 23 extending outward is disposed on a peripheral side of the adjusting shaft 20, and the swing arm 23 is connected with the adjusting inclined surface 41 and can slide along the adjusting inclined surface 41.

Specifically, the regulating wheel 40 is rotatably mounted on one side of the regulating shaft 20 through the first rotating shaft 12, the output shaft of the stepping motor 50 is connected with a driving gear 51, a driven gear 42 is arranged on the peripheral side of the regulating wheel 40, and the stepping motor 50 is meshed with the driven gear 42 through the driving gear 51 to drive the regulating wheel 40 to rotate. A second reset piece is arranged between the first rotating shaft 12 and the U-shaped frame 30 to keep the guide post 31 in the guide sliding groove 21 all the time.

In this embodiment, first piece that resets is torsional spring 22, the one end and the 11 joints of installation frame of torsional spring 22, the other end and the joint of direction spout 21, torsional spring 22 makes regulating spindle 20 take place to rotate, swing arm 23 and the laminating of adjusting 41 slip of inclined plane. The second reset piece is a tension spring 14, one end of the tension spring 14 is connected with the first rotating shaft 12, and the other end of the tension spring is connected with the U-shaped frame 30. It should be understood that the first and second reset members may be replaced by other structures having a reset function.

The utility model discloses in, the work feed subassembly includes work feed swing span 60, work feed dental articulator 70 and work feed dog 71, one side of the lower extreme of work feed swing span 60 is passed through second pivot 13 and is rotated with installation frame 11 and be connected, work feed dental articulator 70 and work feed swing span 60 fixed connection, work feed dog 71 locates work feed dental span 70's upper end, one side of work feed swing span 60 still is connected with the one end rotation that guide post 31 was kept away from to U-shaped frame 30. The cloth feeding assembly is driven by a driving assembly arranged on the mounting frame 11. The driving assembly comprises a lower driving shaft 80, a cam 81 is arranged on the lower driving shaft 80, and the peripheral surface of the cam 81 is connected with the inner side surface of the U-shaped frame 30 in an abutting mode. One end of the lower driving shaft 80 is provided with a bevel gear, when the lower driving shaft 80 works, the bevel gear is controlled by a main driving element on the sewing machine to rotate, so that the lower driving shaft 80 is driven to rotate, the lower driving shaft 80 controls the U-shaped frame 30 to swing back and forth through the cam 81, the cloth feeding swing frame 60 can be driven to swing in the swinging process of the U-shaped frame 30, and the guide column 31 of the U-shaped frame 30 can only slide in the guide chute 21, so that the swinging amplitude of the U-shaped frame 30 can be controlled according to the inclination angle of the guide chute 21, and the cloth feeding amount of the cloth feeding teeth 71 arranged on the cloth feeding swing frame 60 is controlled.

To sum up, the utility model discloses an it is rotatory to adopt step motor to drive the regulating wheel to and set up the regulation inclined plane that the spiral extends on the regulating wheel, utilize and adjust the inclined plane by the characteristics of low to high linear extension, thereby the stepless regulation of regulating spindle rotation angle is realized with the cooperation of swing arm in the rotatory in-process accessible of regulating wheel, and then make the direction spout change inclination, thereby obtain the change of numerous work feed volume, the flexibility that the sewing machine used has been improved, satisfy the more user demand of user, the user obtains better use experience.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, so any modifications, equivalent replacements, improvements, etc. made to the above embodiments by the technology of the present invention are all within the scope of the technical solution of the present invention.

Claims

1. The utility model provides a sewing machine work feed volume adjustment mechanism, includes the installation frame, it is connected with work feed subassembly and regulating spindle to rotate in the installation frame, work feed subassembly rotates with a U-shaped frame to be connected, be equipped with a guide post on the U-shaped frame, be equipped with on the regulating spindle and make the regulating spindle take place rotatory first piece that resets, the one end of regulating spindle is equipped with along with the rotatory direction spout of regulating spindle, the guide post plug-in just can in the direction spout slide in the direction spout, a serial communication port, still be equipped with the adjusting part who is used for controlling the rotation angle of regulating spindle in the installation frame, the adjusting part includes the rotatory step motor of regulating wheel and control regulating wheel, be equipped with the regulation inclined plane of the axial spiral extension along the regulating wheel on the regulating wheel, the week side of regulating spindle is equipped with the swing arm that outwards stretches out, swing arm and regulation inclined plane overlap joint to can slide along adjusting the inclined plane.

2. The cloth feeding amount adjusting mechanism of a sewing machine as claimed in claim 1, wherein the adjusting wheel is rotatably mounted on one side of the adjusting shaft via a first rotating shaft, the output shaft of the stepping motor is connected with a driving gear, a driven gear is disposed around the adjusting wheel, and the stepping motor drives the adjusting wheel to rotate via the engagement of the driving gear and the driven gear.

3. The cloth feeding amount adjusting mechanism of a sewing machine according to claim 2, characterized in that a second reset piece is provided between the first rotating shaft and the U-shaped frame to keep the guide post in the guide chute all the time.

4. The cloth feeding amount adjusting mechanism of the sewing machine as claimed in claim 1, wherein the first reset member is a torsion spring, one end of the torsion spring is clamped with the mounting frame, the other end of the torsion spring is clamped with the guide chute, and when the torsion spring rotates the adjusting shaft, the swing arm is in sliding fit with the adjusting inclined surface.

5. A cloth feeding amount adjusting mechanism of a sewing machine according to claim 3, wherein the second returning member is a tension spring, one end of the tension spring is connected with the first rotating shaft, and the other end is connected with the U-shaped frame.

6. The feed amount adjusting mechanism of a sewing machine according to claim 1, wherein the feed assembly comprises a feed oscillating frame, a feed dog frame and a feed dog, one side of the lower end of the feed oscillating frame is rotatably connected with the mounting frame through a second rotating shaft, the feed dog frame is fixedly connected with the feed oscillating frame, the feed dog is arranged at the upper end of the feed dog frame, and one side of the feed oscillating frame is further rotatably connected with one end of the U-shaped frame away from the guide post.

7. A cloth feeding amount adjusting mechanism of a sewing machine according to claim 6, wherein the cloth feeding unit is driven by a driving unit provided on the mounting frame.

8. The cloth feeding amount adjusting mechanism of sewing machine as claimed in claim 7, wherein the driving assembly includes a lower driving shaft, the lower driving shaft is provided with a cam, and the outer peripheral surface of the cam is in interference connection with the inner side surface of the U-shaped frame.