Double-layer cloth binding mechanism of sewing machine

Abstract

The utility model relates to sewing machine edge covering technical field discloses a sewing machine double cloth edge covering mechanism, a sewing machine double cloth edge covering mechanism, including sewing machine body, needle, presser foot and install the edge covering subassembly outside presser foot, the edge covering subassembly includes the gasket that sets up presser foot one side, evenly distributes the spring piece that is used for to the double cloth is pressed edge and drive in gasket bottom, the top of gasket is provided with drive block, and the top of drive block evenly has the clamping slot that is triangularly opened. The utility model discloses the mechanical linkage of spring piece, drive block and triangular plate, realizes the automatic edge pressing and continuous pushing of double cloth, significantly reduces manual intervention, improves sewing efficiency, and the spring piece under the driving of gasket applies the continuous and uniform pressure to cloth, effectively avoids cloth displacement or wrinkle, guarantees the evenness of edge covering line trace.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine edging technology, specifically to a double-layer fabric edging mechanism for sewing machines. Background Technology

[0002] In the sewing process, binding the edges of double-layered fabric is a common but technically demanding operation. Traditional binding methods often rely on manual assistance to push the fabric, which is not only inefficient but also prone to uneven binding and crooked stitches due to uneven pushing force, seriously affecting the sewing quality and aesthetics. Especially when binding double-layered fabrics with inconsistent elasticity or thickness, it is even more difficult for manual operation to maintain uniform tension and pushing speed, further increasing the difficulty of operation and the defect rate. Therefore, those skilled in the art provide a double-layered fabric binding mechanism for sewing machines to solve the problems mentioned in the background art. Utility Model Content

[0003] The purpose of this utility model is to provide a double-layer fabric binding mechanism for sewing machines, which solves the problem of binding in existing sewing machines.

[0004] This utility model provides the following technical solution: a double-layer fabric binding mechanism for a sewing machine, including a sewing machine body, a needle, a presser foot, and a binding assembly installed on the outside of the presser foot. The binding assembly includes a pad plate disposed on one side of the presser foot, and the bottom of the pad plate is evenly distributed with spring pieces for binding and driving the double-layer fabric. The top of the pad plate is provided with a driving block, and the top of the driving block is evenly provided with triangular slots.

[0005] As a preferred embodiment of the above technical solution, a side groove is pre-set on one side of the pad, a limiting plate is sleeved on the pad through the side groove, sliding grooves are symmetrically opened on the inner side of the pad, sliders are symmetrically installed at the upper and lower ends of the limiting plate, and the pad is sleeved with the sliders through the sliding grooves.

[0006] As a preferred embodiment of the above technical solution, a collar is symmetrically arranged on the side of the bottom of the limiting plate away from the pad. A connecting spring is fixedly installed at the bottom of the collar, and a fixed shaft is fixedly installed at the bottom of the connecting spring. The bottom of the fixed shaft is fixedly connected to the top of the pressure foot.

[0007] As a preferred embodiment of the above technical solution, bolts are symmetrically arranged on the top of the limiting plate, and the bolts extend through the limiting plate, the collar, and the connecting spring to the interior of the fixed shaft.

[0008] As a preferred embodiment of the above technical solution, a triangular plate is provided above the drive block, the triangular plate extends through the slot to the inner side of the drive block, and a socket plate is installed on the side of the triangular plate away from the presser foot, and the socket plate is sleeved with the machine needle.

[0009] As a preferred embodiment of the above technical solution, the left and right sides of the socket plate are symmetrically equipped with right-angled mounting shafts. The mounting shafts have threaded grooves inside, which penetrate the side wall of the socket plate and communicate with the inner cavity of the socket plate. The mounting shafts are threadedly connected to a fastening shaft through the threaded grooves.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention achieves automatic edge pressing and continuous pushing of double-layer fabric through the mechanical linkage of spring, drive block and triangular plate, significantly reducing manual intervention and improving sewing efficiency. Furthermore, the spring, driven by the pad, applies continuous and uniform pressure to the fabric, effectively preventing fabric displacement or wrinkling, ensuring smooth and even edge stitching. Through the cooperation of bolts and connecting springs, the height of the pad and limiting plate can be flexibly adjusted to adapt to double-layer fabrics of different thicknesses or elasticities, enhancing the versatility and practicality of the mechanism. The connecting plate and needle are connected by mounting shaft and fastening shaft, resulting in a stable structure with adjustable height, facilitating quick installation and adjustment according to actual working conditions, and reducing the technical requirements for operators. Attached Figure Description

[0011] Figure 1 A schematic diagram of a double-layer fabric binding mechanism for a sewing machine; Figure 2 A schematic diagram of the needle connection structure of a double-layer fabric binding mechanism in a sewing machine; Figure 3 A schematic diagram of the connection structure of the triangular plate in a double-layer fabric binding mechanism of a sewing machine; Figure 4 This is an exploded view of the connection structure of the pad plate of a double-layer fabric binding mechanism for a sewing machine.

[0012] 1. Sewing machine body; 2. Needle; 3. Presser foot; 4. Connecting plate; 5. Mounting shaft; 6. Fastening shaft; 7. Threaded groove; 8. Triangle plate; 9. Drive block; 10. Slot; 11. Pad; 12. Spring; 13. Slide groove; 14. Limiting plate; 15. Sliding block; 16. Fixed shaft; 17. Collar; 18. Connecting spring; 19. Bolt. Detailed Implementation

[0013] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0014] Please see Figure 1 - Figure 4As shown, this utility model provides a technical solution: a double-layer fabric binding mechanism for a sewing machine, including a sewing machine body 1, a needle 2, a presser foot 3, and a binding assembly installed on the outside of the presser foot 3. The binding assembly includes a pad 11 disposed on one side of the presser foot 3, and the bottom of the pad 11 is evenly distributed with spring pieces 12 for binding and driving the double-layer fabric. The top of the pad 11 is provided with a driving block 9, and the top of the driving block 9 is evenly provided with triangular slots 10.

[0015] As one implementation method in this embodiment, please refer to Figure 2 and Figure 4 As shown, a side groove is pre-set on one side of the pad 11, and a limiting plate 14 is sleeved on the pad 11 through the side groove. A sliding groove 13 is symmetrically opened on the inner side of the pad 11. A slider 15 is symmetrically installed at the upper and lower ends of the limiting plate 14, and the pad 11 is sleeved with the slider 15 through the sliding groove 13.

[0016] Furthermore, a collar 17 is symmetrically arranged on the side of the bottom of the limiting plate 14 away from the pad 11. A connecting spring 18 is fixedly installed at the bottom of the collar 17, and a fixed shaft 16 is fixedly installed at the bottom of the connecting spring 18. The bottom of the fixed shaft 16 is fixedly connected to the top of the pressure foot 3.

[0017] Furthermore, bolts 19 are symmetrically arranged on the top of the limiting plate 14. The bolts 19 extend through the limiting plate 14, the collar 17 and the connecting spring 18 to the interior of the fixed shaft 16. Both the fixed shaft 16 and the limiting plate 14 are threadedly connected to the bolts 19.

[0018] As one implementation method in this embodiment, please refer to Figure 3 As shown, a triangular plate 8 is provided above the drive block 9. The triangular plate 8 extends through the slot 10 to the inner side of the drive block 9. A socket plate 4 is installed on the side of the triangular plate 8 away from the presser foot 3, and the socket plate 4 is sleeved with the needle 2.

[0019] Furthermore, right-angled mounting shafts 5 are symmetrically installed on the left and right sides of the socket plate 4. The mounting shaft 5 has a threaded groove 7 inside, which penetrates the side wall of the socket plate 4 and communicates with the inner cavity of the socket plate 4. The mounting shaft 5 is threadedly connected to a fastening shaft 6 through the threaded groove 7. The fastening shaft 6 facilitates the fixing of the socket plate 4 onto the outside of the needle 2 by cooperating with the mounting shaft 5. Thus, the installation height of the socket plate 4 and the triangular plate 8 can be changed according to the actual situation.

[0020] Working principle: During use, the sewing machine body 1 achieves the sewing of double-layer fabric. During the sewing process, the double-layer fabric is placed under the presser foot 3. As the needle 2 moves back and forth downward, the connecting plate 4 on the outside of the needle 2 drives the triangle plate 8 to move back and forth downward. As the triangle plate 8 moves back and forth downward, it works with the drive block 9 and the slot 10 on its top to drive the pad 11 to move laterally back and forth. The reciprocating pad 11 drives the spring sheet 12 evenly installed at its bottom to squeeze the double-layer fabric. As the spring sheet 12 continuously bends and deforms, the direction of deformation can always maintain the compression of the double-layer fabric and push the double-layer fabric to move, thereby avoiding manual operation and improving the edge binding efficiency. The bolt 19 is threadedly connected to the fixed shaft 16, and the connecting spring 18 is compressed through the depth of penetration, thereby changing the installation height of the limit plate 14 and the pad 11 to adapt to different usage environments.

[0021] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A double-layer fabric binding mechanism for a sewing machine, comprising a sewing machine body (1), a needle (2), a presser foot (3), and a binding assembly mounted on the outside of the presser foot (3), characterized in that: The edge-binding assembly includes a pad (11) disposed on one side of the presser foot (3), and the bottom of the pad (11) is evenly distributed with spring pieces (12) for pressing and driving the double-layer fabric. The top of the pad (11) is provided with a driving block (9), and the top of the driving block (9) is evenly provided with triangular slots (10).

2. The double-layer fabric binding mechanism for a sewing machine according to claim 1, characterized in that: The pad (11) has a pre-set side groove on one side, and the pad (11) is fitted with a limiting plate (14) through the side groove. The pad (11) has symmetrically opened sliding grooves (13) on the inner side. The limiting plate (14) has symmetrically installed sliders (15) at its upper and lower ends, and the pad (11) is fitted with the sliders (15) through the sliding grooves (13).

3. The double-layer fabric binding mechanism for a sewing machine according to claim 2, characterized in that: A collar (17) is symmetrically arranged on the side of the bottom of the limiting plate (14) away from the pad (11). A connecting spring (18) is fixedly installed at the bottom of the collar (17), and a fixed shaft (16) is fixedly installed at the bottom of the connecting spring (18). The bottom of the fixed shaft (16) is fixedly connected to the top of the pressure foot (3).

4. The double-layer fabric binding mechanism for a sewing machine according to claim 3, characterized in that: Bolts (19) are symmetrically arranged on the top of the limiting plate (14). The bolts (19) extend through the limiting plate (14), the collar (17) and the connecting spring (18) to the interior of the fixed shaft (16).

5. A double-layer fabric binding mechanism for a sewing machine according to claim 1, characterized in that: A triangular plate (8) is provided above the drive block (9). The triangular plate (8) extends through the slot (10) to the inside of the drive block (9). A socket plate (4) is installed on the side of the triangular plate (8) away from the presser foot (3), and the socket plate (4) is sleeved with the needle (2).

6. A double-layer fabric binding mechanism for a sewing machine according to claim 5, characterized in that: The socket plate (4) is symmetrically equipped with right-angled mounting shafts (5) on its left and right sides. The mounting shafts (5) have threaded grooves (7) inside. The threaded grooves (7) penetrate the side wall of the socket plate (4) and communicate with the inner cavity of the socket plate (4). The mounting shafts (5) are threadedly connected to fastening shafts (6) through the threaded grooves (7).

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