Deviation rectifying and feeding mechanism of sewing machine

Abstract

The utility model discloses a sewing machine deviation rectifying and feeding mechanism which comprises a roller, a plurality of deviation rectifying assemblies circumferentially distributed on the roller and a driving shaft driving the deviation rectifying assemblies to rectify deviation, and each deviation rectifying assembly comprises a turbine with a groove, a first bearing, a second bearing and a deviation rectifying belt. The grooved turbine and the first bearing are arranged on the same side and are rotationally connected with the roller, the second bearing is arranged on the other side and is rotationally connected with the roller, the deviation rectifying belt is connected to a belt groove in the grooved turbine, the first bearing and the second bearing in a sleeving mode, the driving shaft is rotationally matched with the roller, and a worm part on the driving shaft is in transmission fit with the grooved turbine in the deviation rectifying assembly. By the adoption of the technical scheme, each deviation rectifying belt is matched with the corresponding grooved turbine, the first bearing and the second bearing, compared with an existing structure that each conveying belt needs to be matched with three grooved bearings and one grooved turbine, one bearing is omitted, the number of parts of the whole structure is relatively small, the structure is simple, and time is relatively saved during assembly; and the assembling efficiency can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field related to sewing machines, in particular to a deviation-correcting and feeding mechanism for sewing machines. Background Art

[0002] With technological advancements, automated sewing machines are increasingly being used, replacing manual or semi-manual sewing processes. Automated sewing machines typically require a corrective feed mechanism to correct the fabric's deviation and prevent it from shifting during sewing. While existing corrective feed mechanisms can meet certain usage requirements, they still have structural deficiencies. For example, Chinese patent CN107723933B discloses a sewing machine feed device comprising a driving wheel and a corrective mechanism. The corrective mechanism includes a positioning assembly and a positioning assembly mounting. Each positioning assembly includes three grooved bearing assemblies, wherein the first grooved bearing assembly is fixedly connected to the grooved bearing mounting. A conveyor belt is securely mounted within the grooves of the first, second, and third grooved bearing assemblies, and a grooved turbine, forming an L-shaped structure. Each positioning assembly in this corrective mechanism utilizes three grooved bearing assemblies, and each conveyor belt requires three grooved bearings and one grooved turbine. This results in a relatively large number of structural components, a complex structure, and time-consuming assembly, which affects assembly efficiency. Utility Model Content

[0003] In order to overcome the existing technical defects, the purpose of the present utility model is to provide a sewing machine correction feeding mechanism to solve the above technical problems.

[0004] The technical solutions adopted by the present invention to solve the technical problems are as follows:

[0005] According to one aspect of the present invention, a correction and feeding mechanism for a sewing machine is designed, comprising: a roller, a plurality of correction components circumferentially distributed on the roller, and a drive shaft for driving the plurality of correction components to perform corrections, the correction component comprising a grooved turbine, a first bearing, a second bearing, and a correction belt, the grooved turbine and the first bearing being arranged on the same side and respectively connected to the roller for rotation, the second bearing being arranged on the other side and connected to the roller for rotation, the correction belt being sleeved on the grooves, the first bearing, and the second bearing on the grooved turbine, and part of the correction belt being exposed to the outside of the roller, the drive shaft being rotationally coordinated with the roller, and the worm gear thereon being transmission-coordinated with the grooved turbine in the correction component.

[0006] By adopting the above technical solution, each correction belt of this technical solution is matched with the grooved turbine, the first bearing and the second bearing. Compared with the existing structure in which each conveyor belt needs to be matched with three grooved bearings and one grooved turbine, one bearing is eliminated. The overall structure has relatively fewer components, a simple structure, and is relatively time-saving to assemble, which can improve assembly efficiency.

[0007] To better solve the above technical defects, the present utility model also has a better technical solution:

[0008] In some embodiments, a plurality of the deviation rectifying components are evenly distributed in a circumferential direction. Among adjacent deviation rectifying components, for one deviation rectifying component, the grooved turbine and the first bearing are arranged on the left side, and the second bearing is arranged on the right side; for the other deviation rectifying component, the grooved turbine and the first bearing are arranged on the right side, and the second bearing is arranged on the left side.

[0009] In some embodiments, the second bearing is a grooved bearing.

[0010] In some embodiments, the roller includes a barrel body, and a left barrel body and a right barrel body connected to the left and right ends of the barrel body. Two mounting bearings are sleeved on the drive shaft, one of the mounting bearings is installed in the left barrel body, and the other mounting bearing is installed in the right barrel body. The right end of the drive shaft extends to the right side of the right barrel body.

[0011] In some embodiments, a roller body is connected to the left end of the roller.

[0012] In some embodiments, the deviation rectifying belt is an O-shaped belt.

[0013] In some embodiments, the worm member is a cylindrical member fixedly sleeved on the drive shaft, and a thread meshing with the teeth on the grooved turbine is provided on the outer side wall of the cylindrical member.

[0014] In some embodiments, the worm member is a thread provided on the drive shaft and meshing with the teeth on the grooved turbine.

[0015] In some embodiments, two worm members, one on the left and one on the right, are connected to the drive shaft. The grooved turbine on the left side meshes with the worm member on the left side, and the grooved turbine on the right side meshes with the worm member on the right side. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. is a schematic structural diagram of a sewing machine deviation rectifying and feeding mechanism according to an embodiment provided by the present utility model;

[0017] Figure 2 FIG. is an exploded structural diagram of the sewing machine deviation rectifying and feeding mechanism;

[0018] Figure 3 FIG. is a schematic structural diagram of the drive shaft;

[0019] Figure 4 FIG. is a schematic structural diagram of the roller and the deviation rectifying component;

[0020] Figure 5 FIG. is Figure 4 a schematic structural diagram from another perspective;

[0021] Figure 6 It is a structural diagram of the correction component;

[0022] Figure 7 for Figure 6 Structural diagram from another perspective;

[0023] Figure 8 It is a structural diagram of the roller;

[0024] Reference numerals:

[0025] 1. Roller; 10. Mounting slot; 11. Cylinder body; 111. Main belt slot; 112. Insertion slot; 113. Connecting hole; 12. Left cylinder body; 121. Left belt slot; 13. Right cylinder body; 131. Right belt slot; 2. Correction assembly; 21. Slotted turbine; 22. First bearing; 23. Second bearing; 24. Correction belt; 3. Drive shaft; 31. Worm gear; 32. Mounting bearing; 4. Roller body; 5. Screws. DETAILED DESCRIPTION

[0026] To make the objectives, technical solutions, and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0027] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0028] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, and fixing should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0029] refer to Figures 1 to 8As shown in the figure, a deviation rectifying feeding mechanism provided by the utility model comprises a roller 1, a plurality of deviation rectifying components 2 circumferentially distributed on the roller 1, and a driving shaft 3 for driving the plurality of deviation rectifying components 2 to perform deviation rectification. A roller body 4 is connected to the left end of the roller 1. Among them, a plurality of mounting grooves 10 are circumferentially distributed on the roller 1. The number of the mounting grooves 10 is three or four or five or six or seven or eight or nine or ten or more. In this embodiment, it is preferably that the number of the mounting grooves 10 is ten and they are evenly distributed in a circle. The number of the deviation rectifying components 2 is the same as that of the mounting grooves 10, and the plurality of deviation rectifying components 2 are correspondingly arranged in the plurality of mounting grooves 10 one by one.

[0030] The deviation rectifying component 2 comprises a grooved turbine 21, a first bearing 22, a second bearing 23 and a deviation rectifying belt 24. The grooved turbine 21 and the first bearing 22 are arranged on the same side and are respectively rotatably connected to the roller 1. The first bearing 22 is located on one side of the grooved turbine 21. The first bearing 22 and the second bearing 23 are ordinary bearings or grooved bearings. In this embodiment, it is preferably that the first bearing 22 is an ordinary bearing and the second bearing 23 is a grooved bearing. The second bearing 23 is arranged on the other side and is rotatably connected to the roller 1. The deviation rectifying belt 24 is an O-shaped belt and is sleeved on the groove on the grooved turbine 21, the first bearing 22 and the second bearing 23, and a part of the deviation rectifying belt 24 is exposed to the outside of the roller 1. Among the adjacent deviation rectifying components 2, the grooved turbine 21 and the first bearing 22 in one deviation rectifying component 2 are arranged on the left side and the second bearing 23 is arranged on the right side, and the grooved turbine 21 and the first bearing 22 in the other deviation rectifying component 2 are arranged on the right side and the second bearing 23 is arranged on the left side; if the grooved turbines 21 are all arranged on the same side, when the same number of deviation rectifying components are designed on the roller 1, a roller 1 and a worm member 31 with a larger diameter are required, and the production cost is relatively high. The cross distribution of the grooved turbines 21 can save space, and a roller 1 and a worm member 31 with a relatively smaller diameter can be used, which can reduce the production cost.

[0031] The driving shaft 3 is rotationally matched with the roller 1, and the worm member 31 on the driving shaft 3 is in transmission cooperation with the grooved turbine 21 in the deviation rectifying component 2. Among them, the worm member 31 is a cylindrical component fixedly sleeved on the driving shaft 3, and the outer side wall of the cylindrical component is provided with a thread meshing with the teeth on the grooved turbine 21, or the worm member 31 is a thread arranged on the driving shaft 3 and meshing with the teeth on the grooved turbine 21. In this embodiment, it is preferably that the worm member 31 is a cylindrical component fixedly sleeved on the driving shaft 3, and the outer side wall of the cylindrical component is provided with a thread meshing with the teeth on the grooved turbine 21. One or two worm members 31 are provided. When one worm member 31 is provided, it has a longer structure and meshes with the grooved turbines on both sides. When two worm members 31 are provided, they are two shorter structures. In this embodiment, it is preferably that two worm members 31, one on the left and one on the right, are connected to the driving shaft 3. The grooved turbine 21 on the left side meshes with the worm member 31 on the left side, and the grooved turbine 21 on the right side meshes with the worm member 31 on the right side.

[0032] The roller 1 includes a barrel 11 and a left barrel 12 and a right barrel 13 connected to the left and right ends of the barrel 11. Two mounting bearings 32 are sleeved on the drive shaft 3, one mounting bearing 32 is installed in the left barrel 12, and the other mounting bearing 32 is installed in the right barrel 13. The right end of the drive shaft 3 extends to the right side of the right barrel 13. There are multiple main belt grooves 111 that pass through the circumference of the barrel 11. The right end of the left barrel 12 is provided with a left belt groove 121 corresponding to the main belt groove 111, and the left end of the right barrel 13 is provided with a right belt groove 111 corresponding to the main belt groove 111. The belt groove 131, the main belt groove 111, the left belt groove 121 and the right belt groove 131 constitute the installation groove 10, and the connecting shaft connected to the grooved turbine 21 and the connecting shaft connected to the second bearing 23 respectively correspond to the insertion groove 112 at the end of the cylinder body 11. The cylinder body 11 is provided with a plug hole 113 connected to the main belt groove 111. The connecting shaft inserted in the plug hole 113 extends into the main belt groove 111 and is connected to the first bearing 22. The connecting shaft inserted in the plug hole 113 is fixed by a screw 5 threadedly connected to the threaded hole on the roller 1.

[0033] During actual use, there are two sewing machine correction and feeding mechanisms matched with the sewing machine. The two sewing machine correction and feeding mechanisms are arranged in parallel, one on the left and one on the right. The right end of the driving shaft 3 is connected to a driving device that drives it to rotate. The driving device is a motor or a motor and a reducer structure. The driving device is used to drive the driving shaft 3 to rotate, causing the worm 31 to rotate. The rotation of the worm 31 drives the grooved turbine 21 to rotate, and the grooved turbine 21 thereby drives the correction belt 24 to rotate to achieve correction; the right end of the roller 1 is separately connected to a driving mechanism that drives it to rotate. The driving mechanism is a motor and a reducer structure. The driving mechanism is used to drive the roller 1 to rotate and drive the hem of the clothes or the fabric belt to rotate and feed. When the detection device on the sewing machine detects an offset in the feeding of the hem or fabric belt, the driving device drives the driving shaft 3 to rotate, and then links the correction belt 24 to rotate to correct the position of the hem or fabric belt to achieve correction action.

[0034] The above are only some embodiments of the present invention. For ordinary technicians in this field, several modifications and improvements can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A sewing machine deviation rectifying and feeding mechanism, characterized in that, Comprising: A roller, a plurality of deviation rectifying components circumferentially distributed on the roller, and a driving shaft for driving the plurality of deviation rectifying components to perform deviation rectification. The deviation rectifying component includes a grooved turbine, a first bearing, a second bearing, and a deviation rectifying belt. The grooved turbine and the first bearing are disposed on the same side and are respectively rotatably connected to the roller. The second bearing is disposed on the other side and is rotatably connected to the roller. The deviation rectifying belt is sleeved on the groove of the grooved turbine, the first bearing, and the second bearing, and a part of the deviation rectifying belt is exposed outside the roller. The driving shaft is rotatably matched with the roller, and the worm member thereon is in transmission cooperation with the grooved turbine in the deviation rectifying component.

2. The deviation rectifying and feeding mechanism of a sewing machine according to claim 1, characterized in that, The plurality of deviation rectifying components are circumferentially and uniformly distributed. In adjacent deviation rectifying components, for one deviation rectifying component, the grooved turbine and the first bearing are disposed on the left side, and the second bearing is disposed on the right side. For the other deviation rectifying component, the grooved turbine and the first bearing are disposed on the right side, and the second bearing is disposed on the left side.

3. The deviation rectifying and feeding mechanism of a sewing machine according to claim 1 or 2, characterized in that, The second bearing is a grooved bearing.

4. A sewing machine deviation rectifying and feeding mechanism according to claim 1, characterized in that, The roller includes a barrel body, a left barrel body and a right barrel body connected to the left and right ends of the barrel body. Two mounting bearings are sleeved on the driving shaft. One mounting bearing is mounted in the left barrel body, and the other mounting bearing is mounted in the right barrel body. The right end of the driving shaft extends to the right side of the right barrel body.

5. The deviation rectifying and feeding mechanism of a sewing machine according to claim 1, characterized in that, A roller body is connected to the left end of the roller.

6. The deviation rectifying and feeding mechanism of a sewing machine according to claim 4, characterized in that, The deviation rectifying belt is an O-shaped belt.

7. A sewing machine deviation rectifying and feeding mechanism according to claim 1, characterized in that, The worm member is a cylindrical member fixedly sleeved on the driving shaft, and the outer side wall of the cylindrical member is provided with a thread meshing with the teeth on the grooved turbine.

8. A sewing machine deviation-correcting feeding mechanism according to claim 1, characterized in that, The worm member is a thread disposed on the driving shaft and meshing with the teeth on the grooved turbine.

9. The deviation rectifying and feeding mechanism of a sewing machine according to claim 2 or 8, characterized in that, Two worm members, one on the left and one on the right, are connected to the driving shaft. The grooved turbine on the left side meshes with the worm member on the left side, and the grooved turbine on the right side meshes with the worm member on the right side.

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