Feeding structure for a sewing machine

Abstract

This utility model relates to the field of sewing machine technology, and more particularly to a sewing machine feeding structure, including a worktable. A sewing machine body is mounted on the top surface of the worktable. A mounting frame is fixedly connected to the worktable, and a first transmission roller is mounted on the mounting frame. A second transmission roller is mounted on the worktable. The structure also includes a correction component and a pressing component. The correction component corrects the position of the fabric during feeding, and the pressing component presses down on the fed fabric. By setting up the correction component and controlling the forward and reverse rotation of the motor, the first gear drives a multi-section rack to move within a slide groove. The multi-section rack meshes with a second gear in the corresponding direction, thereby driving a U-shaped block to correct the position of the fabric being fed. In the pressing component, the spring force pushes a sliding rod to slide within a sleeve, causing an arc-shaped pressure plate to press down on the fabric, preventing wrinkles or curling during feeding.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular to a feeding structure for a sewing machine. Background Technology

[0002] A sewing machine is a machine that uses one or more sewing threads to create one or more stitches on fabric, allowing one or more layers of fabric to interweave or sew together. During the operation of a sewing machine, the feeding mechanism plays a crucial role, responsible for accurately and smoothly conveying the fabric to the sewing machine body for the sewing operation.

[0003] Traditional sewing machine feeding structures often experience fabric misalignment during fabric transport. Once the fabric shifts, the sewing stitches deviate from the preset path, resulting in crooked stitches, uneven spacing, and in severe cases, missed or repeated stitches, which greatly affects the appearance quality and structural stability of sewing products. Utility Model Content

[0004] The purpose of this invention is to solve the problem of fabric shifting during the feeding process of sewing machines in the prior art, and to propose a sewing machine feeding structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A sewing machine feeding structure includes a worktable, a sewing machine body mounted on the top surface of the worktable, a mounting frame fixedly connected to the worktable, a first transmission roller mounted on the mounting frame, and a second transmission roller mounted on the worktable.

[0007] Also includes:

[0008] A correction component for correcting the position of the fabric during conveying;

[0009] A pressing assembly for pressing down the conveyed fabric.

[0010] Preferably, the workbench is provided with a sliding groove.

[0011] Preferably, the correction assembly includes a motor, a rotating shaft, a first gear, a multi-section rack, a rotating rod, a second gear, a moving cavity, a moving rack, a support rod, and a U-shaped block. The motor is fixedly connected to the side wall of the workbench, the rotating shaft is fixedly connected to the output end of the motor, and the first gear is fixedly connected to the rotating shaft.

[0012] Preferably, the rotating shaft is rotatably connected to the slide groove.

[0013] Preferably, the multi-section rack is slidably connected to the inner wall of the slide groove, the rotating rod is symmetrically rotatably connected to the inner wall of the slide groove, and the second gear is fixedly connected to the rotating rod.

[0014] Preferably, the multi-segment rack meshes with the first gear, and the multi-segment rack meshes with the second gear.

[0015] Preferably, the movable cavity is symmetrically formed on the inner wall of the slide groove, the movable rack is slidably connected to the inner wall of the movable cavity, the support rod is fixedly connected to the top of the movable rack, and the U-shaped block is fixedly connected to the side wall of the support rod.

[0016] Preferably, the movable rack meshes with the second gear.

[0017] Preferably, the pressing assembly includes a sleeve rod, a sliding rod, a spring, and an arc-shaped pressure plate. The sleeve rod is symmetrically and fixedly connected to the inner wall of the mounting bracket, the sliding rod is slidably connected inside the sleeve rod, and the arc-shaped pressure plate is fixedly connected to the end of the sliding rod away from the sleeve rod.

[0018] Preferably, one end of the spring is fixedly connected to the inner wall of the sleeve rod, and the other end of the spring is fixedly connected to the slide rod.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. This utility model, by setting up a correction component and controlling the forward and reverse rotation of the motor, enables the first gear to drive multiple rack sections to move within the slide groove. The multiple rack sections will mesh with the second gear in the corresponding direction, thereby driving the U-shaped block to correct the position of the fabric being fed, thus ensuring the accuracy of fabric feeding.

[0021] 2. In this utility model, the spring force in the pressing component pushes the slide rod to slide inside the sleeve rod, so that the arc-shaped pressure plate presses down on the fabric, preventing the fabric from wrinkling or curling up during the conveying process, thus improving the sewing quality. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of a sewing machine feeding structure proposed in this utility model;

[0023] Figure 2 This is a schematic diagram of the connection structure between the worktable and the correction component of a sewing machine feeding structure proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the connection structure of some parts of the correction component of the feeding structure of a sewing machine proposed in this utility model;

[0025] Figure 4 This is a schematic diagram of the connection structure between the mounting frame and the pressing component of a sewing machine feeding structure proposed in this utility model.

[0026] Figure 5 for Figure 4Enlarged structural diagram at point A in the middle.

[0027] In the diagram: 1. Workbench; 11. Slide rail; 2. Sewing machine body; 3. Mounting frame; 31. Sleeve rod; 32. Slide rod; 33. Spring; 34. Arc-shaped pressure plate; 4. First transmission roller; 5. Motor; 51. Rotating shaft; 52. First gear; 53. Multi-section rack; 54. Rotating rod; 55. Second gear; 56. Moving cavity; 57. Moving rack; 58. Support rod; 59. U-shaped block; 6. Second transmission roller. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0029] Reference Figure 1 - Figure 5 A feeding structure for a sewing machine includes a worktable 1 with a slide groove 11. A sewing machine body 2 is mounted on the top surface of the worktable 1. A mounting frame 3 is fixedly connected to the worktable 1, and a first transmission roller 4 is mounted on the mounting frame 3. A second transmission roller 6 is mounted on the worktable 1. Both the first transmission roller 4 and the second transmission roller 6 are equipped with a drive mechanism, and the drive mechanism uses the same drive system to simultaneously control the opening and closing of the first transmission roller 4 and the second transmission roller 6. This drive mechanism is existing technology in the field, and its internal structure is only one of the existing technologies, and is not unique. The specific type needs to be selected according to the actual situation, so it will not be described in detail.

[0030] A sewing machine feeding structure further includes a correction component and a pressing component. The correction component is used to correct the position of the fabric during feeding. The correction component includes a motor 5, a rotating shaft 51, a first gear 52, a multi-segment rack 53, a rotating rod 54, a second gear 55, a moving cavity 56, a moving rack 57, a support rod 58, and a U-shaped block 59. The motor 5 is fixedly connected to the side wall of the workbench 1, the rotating shaft 51 is fixedly connected to the output end of the motor 5, the first gear 52 is fixedly connected to the rotating shaft 51, and the rotating shaft 51 is rotatably connected to the slide 11. A multi-segment rack 53 is slidably connected to the inner wall of the slide groove 11. A rotating rod 54 is symmetrically rotatably connected to the inner wall of the slide groove 11. A second gear 55 is fixedly connected to the rotating rod 54. The multi-segment rack 53 meshes with the first gear 52 and the second gear 55. A moving cavity 56 is symmetrically opened on the inner side wall of the slide groove 11. A moving rack 57 is slidably connected to the inner wall of the moving cavity 56. A support rod 58 is fixedly connected to the top of the moving rack 57. A U-shaped block 59 is fixedly connected to the side wall of the support rod 58. The moving rack 57 meshes with the second gear 55. The motor 5 drives the first gear 52 in both forward and reverse directions, causing the multi-segment rack 53 to move in opposite directions, so that the multi-segment rack 53 meshes with the second gear 55 in different directions, causing it to rotate and mesh with the top moving rack 57 (the two move in opposite directions due to the transmission characteristics of the second gear 55). Based on the fabric offset direction, the motor 5 is controlled to rotate, causing the multi-section rack 53 and the second gear 55 to move the rack 57 and the U-shaped block 59 in coordination, thereby correcting the fabric offset and ensuring accurate feeding.

[0031] The pressing assembly is used to press down the conveyed fabric. The pressing assembly includes a sleeve rod 31, a slide rod 32, a spring 33, and an arc-shaped pressure plate 34. The sleeve rod 31 is symmetrically fixedly connected to the inner wall of the mounting frame 3. The slide rod 32 is slidably connected to the inside of the sleeve rod 31. The arc-shaped pressure plate 34 is fixedly connected to the end of the slide rod 32 away from the sleeve rod 31. One end of the spring 33 is fixedly connected to the inner wall of the sleeve rod 31, and the other end of the spring 33 is fixedly connected to the slide rod 32. The spring 33 makes the arc-shaped pressure plate 34 fit better against the first transmission roller 4 and the fabric. The position of the arc-shaped pressure plate 34 and the first transmission roller 4 can also be adaptively adjusted according to the thickness of the fabric. At the same time, the arc-shaped pressure plate 34 can also flatten the fabric.

[0032] The functional principle of this utility model can be explained through the following operation methods:

[0033] First, the fabric to be sewn is placed on the surface of the workbench 1, and the fabric is transported by the rotation of the first transmission roller 4 and the second transmission roller 6.

[0034] During the fabric feeding process, the arc-shaped pressure plate 34 presses the fabric onto the surface of the first transmission roller 4, ensuring that the fabric is fed flat to the sewing machine body 2 for sewing operations, thereby improving the sewing quality.

[0035] When the fabric shifts to the left during transport, the starting motor 5 drives the rotating shaft 51 to rotate in the forward direction, causing the first gear 52 fixed on the rotating shaft 51 to rotate synchronously. The rotation of the first gear 52 drives the multi-section rack 53 to slide horizontally to the left within the slide groove 11. During the sliding process, the multi-section rack 53 meshes with the second gear 55. The second gear 55 rotates under force and meshes with the moving rack 57 above, causing the moving rack 57 to slide within the moving cavity 56. The support rod 58 fixedly connected to its top drives the U-shaped block 59 fixed to the side wall of the support rod 58 to move, thereby pushing the fabric to the right and ensuring the accuracy of the fabric position during transport. When the fabric shifts to the right, the reverse starting motor 5 can correct the fabric to the left through the cooperation of the second gear 55 and the multi-section rack 53.

[0036] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A feeding structure for a sewing machine, comprising a worktable (1), characterized in that, The sewing machine body (2) is mounted on the top surface of the workbench (1), and a mounting frame (3) is fixedly connected to the workbench (1). A first transmission roller (4) is mounted on the mounting frame (3), and a second transmission roller (6) is mounted on the workbench (1). Also includes: A correction component for correcting the position of the fabric during conveying; A pressing assembly for pressing down the conveyed fabric.

2. The sewing machine feeding structure according to claim 1, characterized in that, The workbench (1) is provided with a sliding groove (11).

3. The sewing machine feeding structure according to claim 2, characterized in that, The correction assembly includes a motor (5), a rotating shaft (51), a first gear (52), a multi-section rack (53), a rotating rod (54), a second gear (55), a moving cavity (56), a moving rack (57), a support rod (58), and a U-shaped block (59). The motor (5) is fixedly connected to the side wall of the workbench (1), the rotating shaft (51) is fixedly connected to the output end of the motor (5), and the first gear (52) is fixedly connected to the rotating shaft (51).

4. The sewing machine feeding structure according to claim 3, characterized in that, The rotating shaft (51) is rotatably connected to the slide (11).

5. The sewing machine feeding structure according to claim 3, characterized in that, The multi-section rack (53) is slidably connected to the inner wall of the slide groove (11), the rotating rod (54) is symmetrically rotatably connected to the inner wall of the slide groove (11), and the second gear (55) is fixedly connected to the rotating rod (54).

6. The sewing machine feeding structure according to claim 5, characterized in that, The multi-segment rack (53) meshes with the first gear (52), and the multi-segment rack (53) meshes with the second gear (55).

7. The sewing machine feeding structure according to claim 5, characterized in that, The movable cavity (56) is symmetrically opened on the inner side wall of the slide groove (11), the movable rack (57) is slidably connected to the inner wall of the movable cavity (56), the support rod (58) is fixedly connected to the top of the movable rack (57), and the U-shaped block (59) is fixedly connected to the side wall of the support rod (58).

8. The sewing machine feeding structure according to claim 7, characterized in that, The movable rack (57) meshes with the second gear (55).

9. A sewing machine feeding structure according to claim 1, characterized in that, The pressing assembly includes a sleeve rod (31), a slide rod (32), a spring (33), and an arc-shaped pressure plate (34). The sleeve rod (31) is symmetrically fixedly connected to the inner wall of the mounting bracket (3). The slide rod (32) is slidably connected inside the sleeve rod (31). The arc-shaped pressure plate (34) is fixedly connected to the end of the slide rod (32) away from the sleeve rod (31).

10. A sewing machine feeding structure according to claim 9, characterized in that, One end of the spring (33) is fixedly connected to the inner wall of the sleeve rod (31), and the other end of the spring (33) is fixedly connected to the slide rod (32).

Images