Feeding mechanism of sewing machine

Abstract

The feeding mechanism of the sewing machine comprises two connecting plates, grooves are formed in the centers of the corresponding sides of the two connecting plates, movable plates are arranged on the front sides of the connecting plates, the rear sides of the movable plates are fixedly connected with two sliding blocks, sliding grooves are formed in the positions, close to the left side and the right side, of the front sides of the connecting plates, and the sliding blocks are fixedly connected with the sliding grooves. Through mutual cooperation of structures such as a connecting plate, a pressing plate, a movable plate and an elastic plate, a limiting L-shaped rod can be pulled firstly, the limiting L-shaped rod drives a spring to stretch, the limiting L-shaped rod drives a connecting L-shaped rod to move through a threaded rod, the connecting L-shaped rod drives a pressing plate to move, cloth is placed on the surfaces of two connecting plates, the limiting L-shaped rod is loosened, and then the cloth is placed on the surfaces of the two connecting plates; through the elasticity of a spring, a pressing plate clamps cloth, an inserting rod can limit a movable plate, two connecting plates are moved, the two connecting plates are separated, the two connecting plates are connected through an elastic plate, and therefore the placing range of the cloth is enlarged.

Description

Technical Field

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

[0002] A sewing machine is a machine that uses one or more sewing threads to form one or more stitches on fabric, so that one or more layers of fabric are interwoven or sewn together. Specifically, it mainly refers to a sewing machine for sewing clothes.

[0003] Currently, sewing machines use a feeding mechanism during operation. However, the existing feeding mechanism is not convenient for clamping fabrics of different sizes, which means that the device can only fix fabrics of the same width, thus reducing the applicability of the device. At the same time, it is not convenient to assemble and disassemble the pressing mechanism on the feeding mechanism. If the pressing mechanism malfunctions, the entire feeding mechanism needs to be repaired or replaced. Utility Model Content

[0004] The purpose of this invention is to provide a feeding mechanism for a sewing machine to solve the problems mentioned in the background section.

[0005] The present invention relates to a feeding mechanism for a sewing machine, comprising two connecting plates. Each connecting plate has a groove at the center of one of its corresponding sides. Each connecting plate has a movable plate on its front side. Each movable plate has two sliders fixedly connected to its rear side. Each connecting plate has a sliding groove near its left and right sides on its front side. The sliders are movably connected to the inner cavities of adjacent sliding grooves. Each movable plate has through holes near its left and right sides on its front side.

[0006] In one embodiment, two blind holes are provided on the front side of each movable plate, and a spring is fixedly connected to each blind hole. A limiting L-shaped rod is fixedly connected to the front end of each spring. A first threaded hole is provided on the end of each limiting L-shaped rod away from the spring. A threaded rod is threadedly connected to the inner cavity of each first threaded hole, and several handles are fixedly connected to the outer edge of each threaded rod.

[0007] In one embodiment, the end of the threaded rod away from the limiting L-shaped rod is inserted with a connecting L-shaped rod, and the end of the connecting L-shaped rod away from the limiting L-shaped rod is fixedly connected with a pressure plate.

[0008] In one embodiment, blind grooves are provided on one side of the two connecting plates near the left and right sides, and an elastic plate is provided in the two adjacent blind grooves. Movable grooves are provided on the left and right sides of the inner cavity of the blind grooves, and movable blocks are fixedly connected to the left and right sides of the elastic plate near the top and bottom. The movable blocks are movably connected in the adjacent movable grooves.

[0009] In one embodiment, fixed L-shaped rods are fixedly connected to both the left and right sides of the connecting plate. Each fixed L-shaped rod has several second threaded holes, and bolts are threaded into two adjacent second threaded holes.

[0010] In one embodiment, the front side of the connecting plate is provided with several insertion holes near the left and right sides, and adjacent through holes and insertion holes are provided with insertion rods.

[0011] In one embodiment, two suction cups are fixedly connected to the rear side of each connecting plate.

[0012] The beneficial effects provided by this utility model are:

[0013] By coordinating the connecting plates, pressure plates, movable plates, and elastic plates, the following mechanism can be implemented: First, pull the limiting L-shaped rod. The limiting L-shaped rod then stretches the spring. The limiting L-shaped rod moves the connecting L-shaped rod via the threaded rod. The connecting L-shaped rod then moves the pressure plate. The fabric is placed on the surfaces of the two connecting plates. When the limiting L-shaped rod is released, the pressure plate clamps the fabric due to the spring's elasticity. The insert rod limits the movable plate. Moving the two connecting plates separates them, and the elastic plate connects the two connecting plates, thus expanding the area where the fabric can be placed. Attached Figure Description

[0014] Figure 1 This is a front sectional view of the present invention;

[0015] Figure 2 This is a front view of the present utility model;

[0016] Figure 3 This is a rear view of the present invention;

[0017] Figure 4 This is a front sectional view of the connecting plate of the component of this utility model;

[0018] Figure 5 This is a schematic diagram of the spring structure of the component of this utility model;

[0019] Figure 6 for Figure 1 Enlarged view of point A in the middle.

[0020] In the attached diagram: 1. Connecting plate; 2. Movable plate; 3. Pressure plate; 4. Insert rod; 5. Fixed L-shaped rod; 6. Bolt; 7. Suction cup; 8. Slider; 9. Elastic plate; 10. Movable block; 11. Connecting L-shaped rod; 12. Limiting L-shaped rod; 13. Threaded rod; 14. Handle; 15. Spring. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other. The technical solutions of the present invention will be further described below with reference to the accompanying drawings of the embodiments. The present invention is not limited to the specific embodiments described below.

[0022] It should be understood that the same or similar reference numerals in the accompanying drawings of the embodiments correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "front," "rear," "left," "right," "top," and "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, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms describing positional relationships in the accompanying drawings are for illustrative purposes only and should not be construed as limiting this patent. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0023] In one embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a feeding mechanism for a sewing machine includes two connecting plates 1. Each connecting plate 1 has a groove at the center of one of its corresponding sides. Each connecting plate 1 has a movable plate 2 on its front side. Each movable plate 2 has two sliders 8 fixedly connected to its rear side. Each connecting plate 1 has a sliding groove near its left and right sides on its front side. The sliders 8 are movably connected to the inner cavity of the adjacent sliding groove. Each movable plate 2 has a through hole near its left and right sides on its front side. Each movable plate 2 has two blind holes on its front side. Each blind hole has a spring 15 fixedly connected to its blind hole. Each spring 15 has a limiting L-shaped rod 12 fixedly connected to its front end. Each limiting L-shaped rod 12 has a first threaded hole at its end away from the spring 15. Each threaded hole has a threaded rod 13 threadedly connected to its inner cavity. Each threaded rod 13 has several handles 14 fixedly connected to its outer edge.

[0024] One end of the threaded rod 13 away from the limiting L-shaped rod 12 is inserted with a connecting L-shaped rod 11. One end of the connecting L-shaped rod 11 away from the limiting L-shaped rod 12 is fixedly connected with a pressure plate 3. Blind grooves are opened on the corresponding sides of the two connecting plates 1 near the left and right sides. An elastic plate 9 is provided in the two adjacent blind grooves. Movable grooves are opened on the left and right sides of the inner cavity of the blind groove. Movable blocks 10 are fixedly connected on the left and right sides of the elastic plate 9 near the top and bottom. The movable blocks 10 are movably connected in the adjacent movable grooves. Fixed L-shaped rods 5 are fixedly connected on the left and right sides of the connecting plate 1. Several second threaded holes are opened on the fixed L-shaped rods 5. Bolts 6 are threadedly connected in the two adjacent second threaded holes. Several insertion holes are opened on the front side of the connecting plate 1 near the left and right sides. Insertion rods 4 are provided in the adjacent through holes and insertion holes. Two suction cups 7 are fixedly connected to the rear side of the connecting plate 1.

[0025] Working principle: When the device starts working, place it on one side of the sewing machine. The suction cup 7 adheres to the table. Adjust the position of the movable plate 2 according to the required fabric size. The movable plate 2 drives the slider 8 to move. The movable plate 2 drives the pressure plate 3 to move through the limiting L-shaped rod 12 and the connecting L-shaped rod 11. Then, the insert rod 4 passes through the movable plate 2 and is inserted into the hole on the connecting plate 1, thereby limiting the movable plate 2. Pulling the limiting L-shaped rod 12 causes the spring 15 to stretch. The limiting L-shaped rod 12 drives the connecting L-shaped rod 11 to move through the threaded rod 13. The connecting L-shaped rod 11 drives the pressure plate 3 to move, placing the fabric in place. On the surfaces of the two connecting plates 1, the limiting L-shaped rod 12 is released. The limiting L-shaped rod 12, through the elasticity of the spring 15, drives the threaded rod 13, the connecting L-shaped rod 11 and the pressure plate 3 to move towards the fabric. The pressure plate 3 then presses the fabric. When the movement range of the slider 8 is insufficient to meet the size of the fabric, the bolt 6 is rotated to move the bolt 6 away from the two fixed L-shaped rods 5, and the two connecting plates 1 are moved away from each other. The elastic plate 9 is exposed, thereby expanding the range of the connecting plates 1 for placing the fabric. When the pressure plate 3 malfunctions, the operator removes the insert rod 4 from inside the movable plate 2, so that the movable plate 2 and the pressure plate 3 can be disassembled from the connecting plate 1.

[0026] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0027] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A feeding mechanism for a sewing machine, characterized in that, It includes two connecting plates (1), and a groove is provided at the center of one of the corresponding sides of the two connecting plates (1). A movable plate (2) is provided on the front side of each connecting plate (1). Two sliders (8) are fixedly connected to the rear side of each movable plate (2). A sliding groove is provided on the front side of each connecting plate (1) near the left and right sides. The sliders (8) are movably connected to the inner cavity of the adjacent sliding groove. A through hole is provided on the front side of each movable plate (2) near the left and right sides.

2. The feeding mechanism of a sewing machine according to claim 1, characterized in that, Two blind holes are opened on the front side of each of the movable plates (2). A spring (15) is fixedly connected in each of the blind holes. A limiting L-shaped rod (12) is fixedly connected to the front end of each of the springs (15). A first threaded hole is opened at the end of the limiting L-shaped rod (12) away from the spring (15). A threaded rod (13) is threadedly connected to the inner cavity of the first threaded hole. Several handles (14) are fixedly connected to the outer edge of the threaded rod (13).

3. The feeding mechanism of a sewing machine according to claim 2, characterized in that, The threaded rod (13) is connected to a connecting L-shaped rod (11) at the end away from the limiting L-shaped rod (12), and a pressure plate (3) is fixedly connected to the end of the connecting L-shaped rod (11) away from the limiting L-shaped rod (12).

4. The feeding mechanism of a sewing machine according to claim 1, characterized in that, Blind grooves are provided on one side of each of the two connecting plates (1) near the left and right sides. An elastic plate (9) is provided in the two adjacent blind grooves. Movable grooves are provided on the left and right sides of the inner cavity of the blind groove. Movable blocks (10) are fixedly connected to the left and right sides of the elastic plate (9) near the top and bottom. The movable blocks (10) are movably connected in the adjacent movable grooves.

5. The feeding mechanism of a sewing machine according to claim 1, characterized in that, The connecting plate (1) is fixedly connected to the left and right sides with fixed L-shaped rods (5). Each fixed L-shaped rod (5) has several second threaded holes, and two adjacent second threaded holes are threaded together with bolts (6).

6. The feeding mechanism of a sewing machine according to claim 1, characterized in that, The connecting plate (1) has several insertion holes on the front side near the left and right sides, and the adjacent through holes and insertion holes are provided with insertion rods (4).

7. The feeding mechanism of a sewing machine according to claim 1, characterized in that, Two suction cups (7) are fixedly connected to the rear side of each connecting plate (1).

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