Bottom plate assembly of sewing machine

Abstract

The utility model discloses a bottom plate assembly of a sewing machine, which relates to the technical field of sewing machines and comprises a mounting bottom plate, a fixing plate is mounted at the bottom end of the mounting bottom plate, a driving motor is mounted at the top end of one side of the fixing plate, and a conveying assembly is connected to the bottom end of the driving motor and comprises a rotating shaft connected with the output end of the driving motor. The side, close to the driving motor, of the rotating shaft is slidably connected with a first bevel gear, the outer wall of one side of the first bevel gear is rotatably connected with a movable support, one side of the bottom end of the first bevel gear is engaged with a second bevel gear, the second bevel gear is rotatably connected with the movable support, and one side of the second bevel gear is fixedly connected with a first roller; according to the automatic cloth feeding device, the step of manual cloth feeding is omitted through the conveying assembly, the roller is used for driving cloth to move forwards, the situation that threads are inclined due to unstable manual cloth feeding is reduced, and sewing precision and product quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to a base plate assembly for a sewing machine. Background Technology

[0002] As an important textile machinery, sewing machines are widely used in many fields such as garment manufacturing, home textiles, and leather processing. With the development of large-scale and refined industrial production, higher requirements have been placed on the working efficiency, sewing quality, and ease of operation of sewing machines.

[0003] In traditional sewing machine operation, the operator needs to control the movement of the sewing machine needle bar while manually moving the fabric to ensure that the fabric is sewn in the correct position. Manual fabric feeding makes it difficult to guarantee the uniformity and stability of the fabric delivery. Due to the uncertainty of human operation, the speed and direction of the fabric movement may change slightly during the fabric pushing process, resulting in uneven stitches and affecting the sewing quality. For example, when sewing straight lines, manual fabric feeding may cause the lines to be crooked, and the deviation will be more obvious when sewing longer pieces of fabric.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a base plate assembly for a sewing machine to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, this utility model provides a base plate assembly for a sewing machine, including a mounting base plate. A fixing plate is mounted on the bottom end of the mounting base plate, and a drive motor is mounted on the top side of one side of the fixing plate. A conveying component is connected to the bottom end of the drive motor. The conveying component includes a rotating shaft connected to the output end of the drive motor. A first bevel gear is slidably connected to the side of the rotating shaft near the drive motor. A movable bracket is rotatably connected to the outer wall of one side of the first bevel gear. A second bevel gear is meshed with the bottom end of the first bevel gear. The second bevel gear and the movable bracket are rotatably connected. A first roller is fixedly connected to one side of the second bevel gear. A third bevel gear is fixedly connected to the side of the rotating shaft away from the drive motor. A fourth bevel gear is meshed with the top end of the third bevel gear. A fixing bracket is rotatably connected to the side of the fourth bevel gear away from the rotating shaft. A second roller is fixedly connected to one side of the fourth bevel gear. A first transmission wheel is fixedly connected to the bottom end of the rotating shaft. A transmission belt is sleeved on the outer wall of the first transmission wheel. The first transmission wheel is connected to a second transmission wheel via the transmission belt. A conveying component is also mounted on the top end of the second transmission wheel.

[0007] Furthermore, a connecting rod is fixedly connected to the side of the two first rollers away from the second bevel gear, and a threaded rod is threadedly connected to the middle side of the connecting rod.

[0008] Furthermore, fixing blocks are installed on both sides of the top of the fixing plate, and the side of the drive motor away from the output end is fixedly connected to the inner wall of one of the fixing blocks.

[0009] Furthermore, the first bevel gear is meshed with the movable support, and the third bevel gear is meshed with the fourth bevel gear.

[0010] Furthermore, one end of the threaded rod is rotatably connected to the outer wall of the fixed plate, and a threaded groove is provided on one side of the outer wall of the connecting rod, through which the connecting rod is threadedly connected to the threaded rod.

[0011] Furthermore, the outer wall of the movable support and the inner wall of the fixed block are slidably connected, and the first roller and the second roller are made of anti-slip material.

[0012] Furthermore, the end of the rotating shaft away from the drive motor is rotatably connected to the inner wall of the fixed block, the outer wall of the fixed bracket is fixedly connected to the fixed block, the transmission belt is made of wear-resistant material, and the surface of the transmission belt is covered with anti-slip texture.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. The use of a conveyor assembly eliminates the need for manual fabric feeding. By using rollers to move the fabric forward, it reduces the possibility of skewing caused by unstable manual fabric feeding, thereby improving sewing accuracy and product quality.

[0015] 2. The distance between the two rollers can be adjusted using the conveying component, which can ensure that the fabric is subjected to just the right pressure and friction during the conveying process. This ensures that the fabric is conveyed stably and avoids damage to the fabric or wrinkles caused by excessive pressure, thereby improving the sewing machine's adaptability to various fabric materials and the sewing effect. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the base plate assembly of a sewing machine;

[0017] Figure 2 This is a schematic diagram of the overall structure of a conveying component in the base plate assembly of a sewing machine;

[0018] Figure 3 This is a schematic diagram of the structure of a conveying component in the base plate assembly of a sewing machine;

[0019] Figure 4 This is a schematic diagram of the structure of a movable bracket in the base plate assembly of a sewing machine.

[0020] In the diagram: 1. Mounting base plate; 2. Fixing plate; 3. Drive motor; 4. Rotating shaft; 5. First bevel gear; 6. Movable bracket; 7. Second bevel gear; 8. First roller; 9. Third bevel gear; 10. Fourth bevel gear; 11. Fixing bracket; 12. Second roller; 13. First transmission wheel; 14. Transmission belt; 15. Second transmission wheel; 16. Connecting rod; 17. Threaded rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4This utility model provides a technical solution: a base plate assembly for a sewing machine, including a mounting base plate 1, a fixing plate 2 mounted on the bottom end of the mounting base plate 1, a drive motor 3 mounted on the top side of one side of the fixing plate 2, and a conveying assembly connected to the bottom end of the drive motor 3. The conveying assembly includes a rotating shaft 4 connected to the output end of the drive motor 3. The drive motor 3 provides rotational power to the rotating shaft 4. When the drive motor 3 starts, it drives the rotating shaft 4 to start rotating. A first bevel gear 5 is slidably connected to the side of the rotating shaft 4 closest to the drive motor 3. A movable bracket 6 is rotatably connected to the outer wall of one side of the first bevel gear 5. A second bevel gear 7 is meshed with the bottom end of the first bevel gear 5. The second bevel gear 7 is rotatably connected to the movable bracket 6. A first roller 8 is fixedly connected to one side of the second bevel gear 7. The rotation of the rotating shaft 4 drives the first bevel gear 5 to rotate, and the first bevel gear 5 drives the second bevel gear 7 to rotate through the meshing relationship, thereby causing the first roller 8 to rotate. A third bevel gear 9 is fixedly connected to the side of the rotating shaft 4 away from the drive motor 3. The third bevel gear 9 is meshed with a fourth bevel gear 10 on one side of its top end. When the shaft 4 rotates, it drives the third bevel gear 9 to rotate, which in turn drives the fourth bevel gear 10 to rotate. A fixed bracket 11 is rotatably connected to the side of the fourth bevel gear 10 away from the shaft 4. The fixed bracket 11 provides fixed support for the fourth bevel gear 10, ensuring its stability during rotation. A second roller 12 is fixedly connected to one side of the fourth bevel gear 10. When the fourth bevel gear 10 rotates, the second roller 12 rotates synchronously. A first transmission wheel 13 is fixedly connected to the bottom end of the shaft 4. The first transmission wheel 13 rotates with the shaft 4. A transmission belt 14 is fitted on the outer wall of the first transmission wheel 13. The first transmission wheel 13 is connected to a second transmission wheel 15 via the transmission belt 14. A conveying component is also installed on the top end of the second transmission wheel 15. The first transmission wheel 13 drives the second transmission wheel 15 to rotate via the transmission belt 14, thereby driving the conveying component on the top end of the second transmission wheel 15 to work.

[0023] See Figure 1 , Figure 2 A connecting rod 16 is fixedly connected to the side of the two first rollers 8 away from the second bevel gear 7. A threaded rod 17 is threadedly connected to the middle side of the connecting rod 16. When the threaded rod 17 is rotated, the connecting rod 16 is threadedly connected to the threaded rod 17 because the threaded rod 17 is rotatably connected to the fixed plate 2. The connecting rod 16 drives the two first rollers 8 to move, thereby adjusting the distance between the first rollers 8 and the second roller 12.

[0024] See Figure 1 , Figure 2 Fixing blocks are installed on both sides of the top of the fixing plate 2. The side of the drive motor 3 away from the output end is fixedly connected to the inner wall of one of the fixing blocks. The fixing blocks enhance the firmness of the drive motor 3 installation and reduce the vibration caused by the start of the drive motor 3.

[0025] See Figure 3 The outer wall of the movable bracket 6 is slidably connected to the inner wall of the fixed block. The first roller 8 and the second roller 12 are made of anti-slip material, and the transmission belt 14 is made of wear-resistant material. The surface of the transmission belt 14 is covered with anti-slip texture. The wear-resistant material improves the service life of the transmission belt 14 and reduces transmission failures and replacement costs caused by wear of the transmission belt 14.

[0026] Working principle: After the drive motor 3 is powered on, it starts to drive the rotating shaft 4 to rotate. When the rotating shaft 4 rotates, it drives the first bevel gear 5 to rotate together. Under the sliding restriction of the inner wall of the fixed block, the movable bracket 6 allows the first bevel gear 5 to rotate synchronously with the rotating shaft 4 and move within a certain range. The rotation of the first bevel gear 5 drives the second bevel gear 7 to rotate, which in turn causes the first roller 8 to start rotating. The rotation of the rotating shaft 4 drives the third bevel gear 9 to rotate, which in turn drives the fourth bevel gear 10 to rotate. The rotation of the fourth bevel gear 10 causes the second roller 12 to rotate, realizing the conveying of the fabric. At the same time, the first transmission wheel 13 rotates with the rotating shaft 4, which drives the second transmission wheel 15 to rotate through the transmission belt 14, thereby driving the conveying component at the top of the second transmission wheel 15 to work, realizing the input and output of the fabric. At the same time, if the distance between the first roller 8 and the second roller 12 is adjusted according to the work needs, the threaded rod 17 is rotated. Since the threaded rod 17 is rotatably connected to the fixed plate 2, and the connecting rod 16 is threadedly connected to the threaded rod 17, the connecting rod 16 will drive the two first rollers 8 to move, realizing the adjustment.

[0027] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A base plate assembly for a sewing machine, comprising a mounting base plate (1), characterized in that: A fixing plate (2) is installed at the bottom end of the mounting base plate (1). A drive motor (3) is installed at the top of one side of the fixing plate (2). A conveying assembly is connected to the bottom end of the drive motor (3). The conveying assembly includes a rotating shaft (4) connected to the output end of the drive motor (3). A first bevel gear (5) is slidably connected to the side of the rotating shaft (4) near the drive motor (3). A movable bracket (6) is rotatably connected to the outer wall of one side of the first bevel gear (5). A second bevel gear (7) is meshed with the bottom end of the first bevel gear (5). The second bevel gear (7) and the movable bracket (6) are rotatably connected. A first roller (8) is fixedly connected to one side of the second bevel gear (7). A third bevel gear (9) is fixedly connected to the side of the rotating shaft (4) away from the drive motor (3). A fourth bevel gear (10) is meshed with the top side of the third bevel gear (9). A fixed bracket (11) is rotatably connected to the side of the fourth bevel gear (10) away from the rotating shaft (4). A second roller (12) is fixedly connected to one side of the fourth bevel gear (10). A first transmission wheel (13) is fixedly connected to the bottom end of the rotating shaft (4). A transmission belt (14) is sleeved on the outer wall of the first transmission wheel (13). The first transmission wheel (13) is connected to a second transmission wheel (15) through the transmission belt (14). A conveying component is also installed on the top end of the second transmission wheel (15).

2. The base plate assembly of a sewing machine as described in claim 1, characterized in that: A connecting rod (16) is fixedly connected to one side of the two first rollers (8) away from the second bevel gear (7), and a threaded rod (17) is threadedly connected to one side of the middle part of the connecting rod (16).

3. The base plate assembly of a sewing machine as described in claim 2, characterized in that: The top two sides of the fixed plate (2) are equipped with fixed blocks, and the side of the drive motor (3) away from the output end is fixedly connected to the inner wall of one of the fixed blocks.

4. The base plate assembly of a sewing machine as described in claim 3, characterized in that: The end of the rotating shaft (4) away from the drive motor (3) is rotatably connected to the inner wall of the fixed block, and the outer wall of the fixed bracket (11) is fixedly connected to the fixed block.

5. The base plate assembly of a sewing machine as described in claim 4, characterized in that: The outer wall of the movable support (6) is slidably connected to the inner wall of the fixed block, and the first roller (8) and the second roller (12) are made of anti-slip material.

6. The base plate assembly of a sewing machine as described in claim 5, characterized in that: One end of the threaded rod (17) is rotatably connected to the outer wall of the fixed plate (2), and a threaded groove is provided on one side of the outer wall of the connecting rod (16). The connecting rod (16) is threadedly connected to the threaded rod (17) through the threaded groove.

7. The base plate assembly of a sewing machine as described in claim 6, characterized in that: The first bevel gear (5) is meshed with the movable bracket (6), and the third bevel gear (9) is meshed with the fourth bevel gear (10).

8. The base plate assembly of a sewing machine as described in claim 7, characterized in that: The transmission belt (14) is made of wear-resistant material, and the surface of the transmission belt (14) is covered with anti-slip texture.

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