Automatic feeding device of sewing machine

Abstract

The utility model discloses an automatic feeding device of a sewing machine, and relates to the technical field of sewing machines. The sewing machine comprises a base table, a workbench and a sewing machine body, the workbench is fixed to the top of the base table, the sewing machine body is installed on the back face of the top of the workbench, a first fixing block is fixed to the front surface of the workbench, a limiting shaft is rotationally arranged in the first fixing block, and an adjusting rod is fixed to the top of the limiting shaft; the outer side of the adjusting rod is in threaded connection with an adjusting piece, the top of the inner side of the first fixing block is provided with a groove-shaped structure for the adjusting piece to move, a pressing piece is fixed to the bottom of the adjusting piece, and the two sides of the bottom of the pressing piece are each provided with a fillet structure. Therefore, the cloth needing to be sewn has a flat sewing environment, meanwhile, the height of the pressing plate can be adjusted according to cloth sewing products of different numbers, and therefore the multiple pieces of cloth have good flatness during sewing.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, specifically to an automatic feeding device for sewing machines. Background Technology

[0002] The textile industry encompasses the entire industrial chain from fiber to finished product, including multiple stages such as spinning, weaving, and dyeing. Among these stages, sewing machines play a crucial role in the textile process. They are the key equipment for sewing fabric into garments. Sewing machines not only improve production efficiency but also ensure the quality and aesthetics of the sewing. In modern garment manufacturing, sewing machines are an indispensable tool that supports the rapid development of the entire industry.

[0003] However, when using a traditional sewing machine, the operator needs to support multiple pieces of fabric to be sewn so that the machine can sew them together. The relatively large fabrics require the operator to switch back and forth between sewing and moving, which can lead to uneven sewing lines and frequent start-stop cycles that can cause thread breakage. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide an automatic feeding device for sewing machines, which can flatly feed the fabric to be sewn, thereby providing a flat sewing environment for the fabric. At the same time, it can also adjust the height of the pressure plate for sewing products with different quantities of fabric, so that multiple fabrics have better flatness when sewing.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic feeding device for a sewing machine, comprising a base, a worktable, and a sewing machine body. The worktable is fixed to the top of the base, and the sewing machine body is mounted on the back of the top of the worktable. A thread feeding table is provided on one side of the sewing machine body. A first fixing block is fixed to the front surface of the worktable, and a limiting shaft is rotatably provided inside the first fixing block. An adjusting rod is fixed to the top of the limiting shaft, and an adjusting knob is fixed to the top of the adjusting rod. An adjusting plate is threaded to the outer side of the adjusting rod. A groove-shaped structure for the adjusting plate to move is provided on the top of the inner side of the first fixing block. A pressure plate is fixed to the bottom of the adjusting plate, and rounded corner structures are provided on both sides of the bottom of the pressure plate.

[0006] By adopting the above technical solution, the base platform provides support for the worktable, and the worktable provides a sewing platform for the fabric body. The cooperation between the sewing machine body and the feed table allows the operator to sew the fabric body below the sewing machine body through the control center. The first fixing block, through cooperation with the internal limiting shaft, provides rotation for the adjusting rod and also provides a limiting function for the adjusting rod. The position of the adjusting plate can be adjusted by rotating the adjusting rod. The adjusting knob allows the user to easily rotate the adjusting rod. The adjusting plate is used to drive the pressure plate to move synchronously. The rounded corner structure on both sides of the bottom of the pressure plate allows the fabric body to easily pass through the gap between the bottom of the pressure plate and the worktable.

[0007] Furthermore, the bottom of the base platform is fixed with several sets of support feet.

[0008] By adopting the above technical solution and fixing several sets of support feet at the bottom of the base platform, the stability of the entire automatic feeding device of the sewing machine is significantly enhanced.

[0009] Furthermore, an indicator is embedded in the top of the workbench and is positioned vertically corresponding to the sewing machine body.

[0010] By adopting the above technical solution, and by embedding a marker in the top of the workbench and setting it vertically corresponding to the sewing machine body, this technical solution provides the operator with an intuitive reference mark. The setting of the marker also greatly simplifies the operation process and reduces the skill requirements for the operator.

[0011] Furthermore, both ends of the top of the workbench are fixed with conveyor frames, and a first conveyor roller is rotatably arranged inside the conveyor frame on the side close to the vertical central axis of the workbench, and a second conveyor roller is rotatably arranged inside the conveyor frame on the side close to the vertical central axis of the workbench. The fabric body is attached between the first conveyor roller and the second conveyor roller.

[0012] By adopting the above technical solution, by fixing the conveyor frame at both ends of the top of the workbench and setting the first conveyor roller and the second conveyor roller inside the conveyor frame, the first conveyor roller and the second conveyor roller can provide a good and stable winding environment for the fabric body, and at the same time assist the fabric body in winding and conveying.

[0013] Furthermore, a second fixing block is fixed to the rear surface of the worktable, and is arranged symmetrically with the first fixing block based on the vertical central axis of the worktable.

[0014] By adopting the above technical solution, and by fixing a second fixing block to the rear surface of the worktable and symmetrically arranging it with the first fixing block based on the vertical central axis of the worktable, the structural stability and balance of the adjusting plate are enhanced.

[0015] Furthermore, a limit rod is fixed to the top inner side of the second fixing block and slides into engagement with the adjusting plate.

[0016] By adopting the above technical solution, and by fixing a limiting rod to the top inner side of the second fixed block and slidingly engaging it with the adjusting plate, this technical solution provides stable guidance and support for the movement of the adjusting plate.

[0017] In summary, the present invention has the following main advantages:

[0018] 1. This utility model is designed with an adjusting rod, an adjusting plate, and a pressure plate. When the adjusting knob is turned, the adjusting knob can drive the adjusting rod to rotate synchronously, so that the adjusting rod can be connected to the adjusting plate through a threaded connection, thereby allowing the adjusting plate to be adjusted in height. The adjusting plate has a limiting function by sliding connection with the limiting rod on the inner side of the top of the second fixing block. Both sides of the bottom of the pressure plate are chamfered, so that when multiple sets of fabric bodies are laid flat, the fabric bodies can pass through the gap reserved between the pressure plate and the worktable better.

[0019] 2. This utility model, by setting up a conveyor frame, a first conveyor roller, and a second conveyor roller, has a conveyor frame at each of the top two ends of the worktable. The first conveyor roller is rotatably mounted at the end of the conveyor frame closer to the vertical central axis of the worktable, while the second conveyor roller is rotatably mounted at the end of the conveyor frame away from the vertical central axis of the worktable. Thus, the fabric to be sewn can be conveyed through the first and second conveyor rollers in the two sets of conveyor frames, and the fabric to be sewn is positioned horizontally with the top of the worktable, thereby improving the sewing of the fabric. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the fabric body of this utility model in an unplaced state;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the connection between the adjusting rod and the adjusting plate of this utility model;

[0023] Figure 4 This is a schematic diagram of the connection structure between the adjusting plate and the pressing plate of this utility model.

[0024] In the diagram: 1. Base platform; 2. Support leg; 3. Workbench; 4. Indicator; 5. Sewing machine body; 6. Feeding table; 7. Conveyor frame; 8. First conveyor roller; 9. Second conveyor roller; 10. First fixing block; 11. Limiting shaft; 12. Adjusting rod; 13. Adjusting knob; 14. Second fixing block; 15. Limiting rod; 16. Adjusting plate; 17. Pressing plate; 18. Fabric body. Detailed Implementation

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0026] In this embodiment:

[0027] An automatic feeding device for a sewing machine, such as Figures 1-4 As shown, the sewing machine includes a base platform 1, a worktable 3, and a sewing machine body 5. The worktable 3 is fixed to the top of the base platform 1, and the sewing machine body 5 is installed on the back of the top of the worktable 3. A thread feeding table 6 is provided on one side of the sewing machine body 5. A first fixing block 10 is fixed to the front surface of the worktable 3, and a limit shaft 11 is rotatably provided inside the first fixing block 10. An adjusting rod 12 is fixed to the top of the limit shaft 11, and an adjusting knob 13 is fixed to the top of the adjusting rod 12. An adjusting plate 16 is threaded to the outside of the adjusting rod 12. A groove-shaped structure for the adjusting plate 16 to move is provided on the top of the inner side of the first fixing block 10. A pressure plate 17 is fixed to the bottom of the adjusting plate 16, and rounded corner structures are provided on both sides of the bottom of the pressure plate 17.

[0028] The stable combination of the base 1, worktable 3, and sewing machine body 5 provides a stable and efficient working environment. The combination of the first fixing block 10 and the limiting shaft 11 provides a stable rotation environment for the adjusting rod 12. The threaded connection design between the adjusting rod 12 and the adjusting plate 16 allows the operator to precisely adjust the height of the pressure plate 17 by rotating the adjusting knob 13 to accommodate fabrics of different thicknesses and layers. In addition, the rounded corner structure design at the bottom of the pressure plate 17 effectively prevents the fabric from being scratched or damaged during sewing, further ensuring the quality of the finished product.

[0029] See Figure 1 and Figure 2 The bottom of the base platform 1 is fixed with several sets of support legs 2;

[0030] Among them, the support foot 2 can evenly distribute the various forces generated by the device during operation, effectively preventing the device from tilting or shaking due to uneven force, thereby ensuring that the sewing operation can be carried out smoothly. At the same time, the number of support feet 2 can be increased as appropriate according to the actual situation.

[0031] See Figure 2 The top of the workbench 3 is embedded with a symbol 4, which is set vertically to correspond with the sewing machine body 5.

[0032] Among them, the indicator 4 can clearly indicate the position of the needle on the sewing machine body 5, so that the operator can place and position the fabric more accurately, thereby effectively improving the sewing accuracy.

[0033] See Figure 1 and Figure 2 Both ends of the top of the workbench 3 are fixed with conveyor frames 7, and a first conveyor roller 8 is rotatably arranged inside the conveyor frame 7 on the side close to the vertical central axis of the workbench 3, and a second conveyor roller 9 is rotatably arranged inside the conveyor frame 7 on the side close to the vertical central axis of the workbench 3. The fabric body 18 is attached between the first conveyor roller 8 and the second conveyor roller 9.

[0034] By fixing the conveyor frame 7 at both ends of the top of the workbench 3 and setting the first conveyor roller 8 and the second conveyor roller 9 inside the conveyor frame 7, the efficiency of fabric sewing can be greatly improved, and the complexity and labor intensity of manual operation can be reduced. The close fit between the first conveyor roller 8, the second conveyor roller 9 and the fabric body 18 allows the fabric body 18 to be smoothly transferred between the two, maintaining the flatness and tension of the fabric, which is crucial for subsequent sewing work.

[0035] See Figure 1 , Figure 2 and Figure 3 The rear surface of the worktable 3 is fixed with a second fixing block 14, which is arranged symmetrically with the first fixing block 10 based on the vertical central axis of the worktable 3.

[0036] The symmetrical arrangement of the second fixing block 14 and the first fixing block 10 helps to evenly distribute the weight and force of the adjusting plate 16, preventing tilting or deformation caused by excessive force on one side, thereby ensuring that the adjusting plate 16 can maintain a stable working state during long-term use.

[0037] See Figure 3 The inner top of the second fixing block 14 is fixed with a limit rod 15, which slides and engages with the adjusting piece 16.

[0038] By fixing the limiting rod 15 to the top inner side of the second fixing block 14 and sliding it into the adjusting plate 16, it is ensured that the adjusting plate 16 can slide smoothly along the limiting rod 15 during the up and down movement, thereby maintaining the accuracy and stability of its movement.

[0039] The implementation principle of this embodiment is as follows: First, the work platform consisting of the base 1 and the workbench 3 is placed in a designated position using support feet 2. Then, the fabric to be sewn is passed through the conveyor frame 7 on one side of the top of the workbench 3. The first conveyor roller 8 and the second conveyor roller 9 inside the conveyor frame 7 limit the conveying of the fabric. Then, the fabric passes under the adjusting plate 16 and is flattened and limited by the pressure plate 17 at the bottom of the adjusting plate 16 to prevent wrinkles from forming during the sewing process and affecting the finished product. Depending on the quantity and thickness of the fabric to be sewn, rotating the adjusting knob 13 will drive the adjusting rod 12 at the bottom to rotate. The adjusting rod 12 achieves a stable rotation environment through the limiting shaft 11 at the bottom and the limiting of the first fixing block 10. The adjusting rod 12 interacts with the adjusting plate 16. The threaded connection allows the other end of the adjusting plate 16 to slide and limit the limit rod 15 inside the second fixed block 14, thereby allowing the adjusting plate 16 to drive the pressure plate 17 to move up and down. This allows the distance of the downward pressure limit to be adjusted according to the actual thickness of the fabric, thus accommodating multiple sets of different quantities of fabric for sewing operations. Then, the end of the fabric to be sewn is passed through the first conveying roller 8 and the second conveying roller 9 inside another set of conveying frames 7 at the top of the worktable 3, and then wound up onto the external take-up roller. The two sets of first conveying rollers 8 inside the two sets of conveying frames 7 can provide good flatness for the two ends of the fabric during sewing operations and can provide a good conveying environment for the fabric. Finally, the sewing machine body 5 is opened through the control center, allowing the sewing machine body 5 to sew the fabric below.

[0040] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An automatic thread feeder for a sewing machine, characterized by: Base table (1), workbench (3) and sewing machine body (5) are included. The top of the base table (1) is fixedly connected with the workbench (3), and the back of the top of the workbench (3) is mounted with the sewing machine body (5), and one side of the sewing machine body (5) is provided with a thread table (6), the front surface of the workbench (3) is fixedly connected with a first fixed block (10), the inside of the first fixed block (10) is rotatably provided with a limiting shaft (11), the top of the limiting shaft (11) is fixedly connected with an adjusting rod (12), the top of the adjusting rod (12) is fixedly connected with an adjusting knob (13), the outer side of the adjusting rod (12) is threadedly connected with an adjusting piece (16), the top of the inside of the first fixed block (10) is provided with a groove structure for the movement of the adjusting piece (16), the bottom of the adjusting piece (16) is fixedly connected with a pressing piece (17), and the bottom of the pressing piece (17) is provided with a round corner structure on both sides.

2. The automatic thread feeder for a sewing machine according to claim 1, wherein: The bottom of the base table (1) is fixedly connected with a plurality of groups of supporting legs (2).

3. The automatic thread feeder for a sewing machine according to claim 1, wherein: The top of the workbench (3) is embedded with a schematic mark (4), and is arranged in a top-down corresponding manner with the sewing machine body (5).

4. The automatic thread feeder for a sewing machine according to claim 1, wherein: The top of the workbench (3) is fixedly connected with a conveying frame (7), and the inside of the conveying frame (7) is rotatably provided with a first conveying roller (8) on one side close to the vertical central axis of the workbench (3), and rotatably provided with a second conveying roller (9) on the other side close to the vertical central axis of the workbench (3), and the fabric body (18) is arranged between the first conveying roller (8) and the second conveying roller (9).

5. The automatic thread feeder for a sewing machine according to claim 1, wherein: The back surface of the workbench (3) is fixedly connected with a second fixed block (14), and the first fixed block (10) and the second fixed block (14) are arranged in a front-rear symmetrical manner based on the vertical central axis of the workbench (3).

6. The automatic thread feeder for a sewing machine according to claim 5, wherein: The inside of the second fixed block (14) is fixedly connected with a limiting rod (15), and the limiting rod (15) is slidably connected with the adjusting piece (16).

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