Stationary fixture for sewing of sewing machine
By designing a sewing machine fixed fixed fixture including elastic boards and active pressure rollers, the problem of complexity and high cost of sewing machine clamps in existing technologies can be solved, and the automatic tightening and cost of the material are reduced.
Patent Information
- Application Number
- CN202411732384.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-01-24
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In order to apply tension when clamping materials, existing sewing machine fixtures need to set up complex multi-directional clamping arms and cylinder systems, resulting in high costs and high maintenance costs.
A fixed fixture is designed that connects the supporting plate, the pressure plate and the cylinder. The pressure plate is equipped with multiple elastic plates, movable sections and fixed sections. When the cylinder drives the pressure plate to move downward, the movable section pushes the movable pressure roller, and the elastic component compresses and releases , automatically tighten the material to avoid wrinkles.
By simplifying the fixture structure, the dependence on the multi -direction of the arm and the cylinder is reduced, the cost and maintenance costs are reduced, and the automatic tightening of the material during the sewing process is achieved, and the fold is avoided.
Smart Images
Figure CN119352241A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of sewing machines, and in particular relates to a fixing clamp used for sewing by sewing machines. Background Art
[0002] Sewing machine clamps are tools used to fix sewing materials to ensure that the sewing materials remain stable during the sewing process and avoid movement or deformation. They include basic clamps and special clamps. Among them, basic clamps are suitable for general sewing operations, such as straight line sewing, curve sewing, etc.; special clamps are designed for specific sewing needs, such as elastic band clamps, hemming clamps, etc. The clamps are connected to the servo drive device of the automatic sewing machine, and the servo drive device drives the clamp to move horizontally to control the direction of the stitching.
[0003] The basic clamp includes a support plate, a cover plate and a driving component. The driving component drives the cover plate to move and presses the material against the support plate. When sewing the material, the sewing area of the material needs to be flat and wrinkle-free to avoid overlapping of the material. When sewing, the material will be dragged by the needle and deformed in the vertical direction. In order to avoid wrinkles caused by the material being dragged, the sewing area of the material needs to be tightened when the clamp clamps the material so that the sewing area of the material has a certain tension to avoid wrinkles.
[0004] However, in order to apply tension to the material when clamping the material, the current clamps are all equipped with movable clamping arms driven by cylinders. After the clamping arms clamp the material, the cylinders drive the clamping arms to move, thereby tightening the material. The clamping arms that move in multiple directions make the overall structure of the clamp more complicated, and it is necessary to set up cylinders in multiple directions and pipes and control valves connecting the cylinders, which makes the cost of the clamp and subsequent maintenance costs higher. Summary of the invention
[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a fixing clamp for sewing with a sewing machine, which at least partially solves the above problem.
[0006] The technical solution adopted by the present invention is as follows: The present invention proposes a fixing fixture for sewing with a sewing machine, comprising a connecting support plate and a pressing plate arranged above the connecting support plate, wherein the pressing plate is provided with a sewing opening; A cylinder, the telescopic end of which is connected to the pressing plate, and is used to drive the pressing plate to move up and down, so that the pressing plate can press the material onto the connecting support plate; Wherein, the pressing plate is provided with a plurality of elastic plates, the plurality of elastic plates are distributed around the sewing opening and are located between the connecting support plate and the pressing plate, the elastic plate is provided with a fixed section and a movable section, the fixed section is connected to the pressing plate, the movable section is provided with a first end and a second end, the first end of the movable section is connected to the fixed section, the second end of the movable section is inclined toward a side close to the connecting support plate, when the pressing plate moves downward, the second end of the movable section is pushed toward a side close to the connecting support plate in the height direction, and the second end of the movable section can move in a direction away from the sewing opening in the horizontal direction; The second end of the movable section is connected to a movable pressure roller, and the movable pressure roller is configured to be able to slide along the length direction of the movable section. Both ends of the movable pressure roller are provided with elastic components. When the second end of the movable section is pushed toward the side close to the connecting support plate, the elastic component is compressed and applies an elastic force to the movable pressure roller to move away from the sewing opening.
[0007] Furthermore, a plurality of fixed pressure rollers capable of unidirectional rotation are provided along the length direction of the movable section, and the rotation direction of the fixed pressure rollers is set to be able to tighten the material.
[0008] Furthermore, support plates are provided on both sides of the movable section, the two support plates are arranged parallel to each other, and both ends of the fixed pressure roller are respectively connected to the support plates on both sides.
[0009] Furthermore, the elastic component includes a guide rod and a slider, the guide rod is fixed on the support plate, the slider is slidably connected to the guide rod, the guide rod is provided with a spring for applying elastic thrust to the sliding of the slider, and the movable pressure roller is connected to the slider.
[0010] Furthermore, one-way bearings are provided at both ends of the fixed pressure roller, and the two ends of the fixed pressure roller are connected to the support plate through the one-way bearings.
[0011] Furthermore, the diameters of the fixed pressure roller and the movable pressure roller are the same, and the axes of the fixed pressure roller and the movable pressure roller are located on the same plane.
[0012] Furthermore, the movable pressure roller comprises a hard roller and a rubber sleeve, and the rubber sleeve is fixedly mounted on the outer side of the hard roller.
[0013] Furthermore, a connecting frame is provided on one side of the connecting support plate, the connecting frame is configured to be L-shaped, and the cylinder is fixed on the connecting frame.
[0014] Furthermore, two locking rods are fixed on the connecting frame, and the connecting frame is connected to the servo drive device of the sewing machine through the locking rods.
[0015] Furthermore, a sewing area is provided on the connecting support plate, and the sewing area is located within the range of the sewing opening.
[0016] The beneficial effects achieved by the present invention using the above structure are as follows: 1. An elastic plate is arranged around the sewing opening, and the elastic plate is provided with an inclined movable section. When the cylinder drives the pressing plate to move downward, the movable section swings to the side close to the pressing plate, and the second end of the movable section can move in the horizontal direction away from the sewing opening, exerting a thrust on the material away from the sewing opening to tighten the material. There is no need to additionally set up a horizontally movable clamping arm and a cylinder, pipeline and control valve for driving the clamping arm, thereby reducing the cost of the clamp and subsequent maintenance costs.
[0017] 2. By arranging a movable pressing roller that can slide at the second end of the movable section of the elastic plate, when the cylinder drives the pressing plate to move downward to clamp the material, the movable pressing roller is subjected to downward pressure and sliding resistance of horizontal movement, and the movable pressing roller can move toward the first end of the movable section, and compress the elastic component to store force. During the sewing process, if the material is dragged and stretched by the needle and the tension is reduced, the elastic component can be released to push the movable pressing roller to move away from the sewing opening, and push the material away from the sewing opening to tighten the material again, thereby realizing automatic tightening of the material during the sewing process and avoiding wrinkles caused by the material being dragged by the needle. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 A structural schematic diagram of a fixing fixture for sewing by a sewing machine proposed in an embodiment of the present invention; Figure 2 A side view of a fixing fixture for sewing with a sewing machine according to an embodiment of the present invention; Figure 3 A schematic diagram of the position distribution of a fixed pressure roller and a movable pressure roller in a fixed clamp for sewing by a sewing machine proposed in an embodiment of the present invention; Figure 4 for Figure 3 The enlarged schematic diagram at A in the middle; Figure 5 A schematic diagram of the swing direction of an elastic plate in a fixing fixture for sewing by a sewing machine proposed in an embodiment of the present invention; Figure 6 A structural schematic diagram of a fixing fixture for sewing by a sewing machine proposed in an embodiment of the present invention; Figure 7 for Figure 6 The enlarged schematic diagram of point B in the middle; Figure 8 A schematic diagram of the structure of a fixed pressure roller in a fixed clamp for sewing by a sewing machine proposed in an embodiment of the present invention; Fig. 9 The present invention is a schematic structural diagram of a movable pressure roller in a fixed fixture for sewing by a sewing machine, as proposed in an embodiment of the present invention.
[0019] Among them, 1. connecting support plate; 101. sewing area; 11. connecting frame; 12. locking rod; 2. pressure plate; 201. sewing port; 3. cylinder; 4. elastic plate; 41. fixed section; 42. movable section; 43. supporting plate; 5. fixed pressure roller; 51. one-way bearing; 6. movable pressure roller; 61. hard roller; 62. rubber sleeve; 7. guide rod; 8. slider; 9. spring.
[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.
[0022] In the description of the present invention, it should be understood that terms such as “upper”, “lower”, “front”, “back”, “left”, “right”, “top”, “bottom”, “inside” and “outside” indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.
[0023] like Figure 1 As shown, the present invention proposes a fixing fixture for sewing with a sewing machine, the fixture is connected to a servo drive device of an automatic sewing machine, the servo drive device drives the fixture to move in a horizontal direction to control the direction of the stitching, the fixing fixture comprises a connecting support plate 1, a pressing plate 2 and a cylinder 3, the connecting support plate 1 and the pressing plate 2 are arranged parallel to each other, and the pressing plate 2 is arranged above the connecting support plate 1, the cylinder 3 is arranged on one side of the connecting support plate 1, and the telescopic end of the cylinder 3 is connected to the pressing plate 2, the cylinder 3 can drive the pressing plate 2 to move up and down, the telescopic end of the cylinder 3 drives the pressing plate 2 to move downward until the connecting support plate 1 and the pressing plate 2 are pressed together, at which time the pressing plate 2 can press the material onto the connecting support plate 1 to fix the material to be sewn.
[0024] The cylinder 3 is connected to an external air supply device through an air pipe and a control valve, and the movement of the cylinder 3 is controlled by the control valve to achieve extension and contraction of the cylinder 3.
[0025] In a specific embodiment, a connecting frame 11 is provided on one side of the connecting support plate 1, and the connecting frame 11 is set to be L-shaped. The cylinder 3 is fixed on the vertical side of the L-shaped connecting frame 11, and the cylinder 3 is vertically fixed so that the telescopic direction of the telescopic end of the cylinder 3 is vertical telescopic.
[0026] Furthermore, two locking rods 12 are fixed on the connecting frame 11, and the servo drive device of the sewing machine is provided with an automatic lock corresponding to the locking rod 12. The automatic lock is connected and locked with the locking rod 12, so that the clamp is connected and fixed with the servo drive device. The servo drive device drives the clamp to move in the horizontal direction to control the sewing path. When the clamp needs to be replaced, the automatic lock is opened to disengage the locking rod 12 from the automatic lock, and then a new clamp is replaced.
[0027] It should be noted that a sewing area 101 is provided on the connecting support plate 1, and the sewing area 101 is located within the range of the sewing opening 201. According to the sewing path of the material, a groove corresponding to the sewing path is opened on the sewing area 101. When sewing, the servo drive device of the sewing machine drives the clamp to move along the sewing path, and the sewing needle is always in the groove opened on the sewing area 101 to avoid the phenomenon of needle collision interference.
[0028] Combination Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a plurality of elastic plates 4 are provided on the pressing plate 2, and the plurality of elastic plates 4 are distributed around the sewing opening 201, and the elastic plates 4 are located between the connecting support plate 1 and the pressing plate 2. When the cylinder 3 drives the pressing plate 2 to move downward and approach the connecting support plate 1, the elastic plates 4 can be pressed to be completely horizontal; In a specific embodiment, the elastic plate 4 is provided with a fixed section 41 and a movable section 42, the fixed section 41 is fixedly connected to the pressing plate 2, the movable section 42 is provided with a first end and a second end, the first end of the movable section 42 is connected to the fixed section 41, and the second end of the movable section 42 is inclined toward a side close to the connecting support plate 1; When the cylinder 3 drives the pressing plate 2 to move downward, the second end of the movable segment 42 is pushed toward the side close to the pressing plate 2 in the height direction, that is, the movable segment 42 swings toward the side close to the pressing plate 2. Since the first end of the movable segment 42 is fixed to the pressing plate 2, the first end of the movable segment 42 cannot move in the horizontal direction, and the second end of the movable segment 42 is in a free state. Therefore, when the movable segment 42 swings, the second end of the movable segment 42 can move in the horizontal direction (such as Figure 6 As shown), at the same time, the inclination direction of the movable segment 42 is set so that the first end of the movable segment 42 is close to the sewing opening 201, and the second end of the movable segment 42 is away from the sewing opening 201. At this time, when the movable segment 42 swings, the second end of the movable segment 42 can move in the horizontal direction away from the sewing opening 201.
[0029] In this way, when the movable section 42 of the elastic plate 4 swings, the second end of the movable section 42 can move in the horizontal direction away from the sewing opening 201. Therefore, when there is material to be sewn on the connecting support plate 1, as the pressing plate 2 is pressed down, the elastic plates 4 around the sewing opening 201 can apply a thrust to the material to move away from the sewing opening 201. Since the elastic plates 4 are evenly distributed around the sewing opening 201, the material can be subjected to an outward pulling force around the sewing opening 201, so that the material is tightened. The cylinder 3 is used to drive the pressing plate 2 to move, and the force used to clamp the material makes the material tight. There is no need to set up an additional horizontally movable clamping arm and a cylinder, pipeline, and control valve to drive the clamping arm, thereby reducing the cost of the clamp and subsequent maintenance costs.
[0030] Furthermore, the second end of the movable section 42 is connected to a movable pressure roller 6, and both ends of the movable pressure roller 6 are fixedly connected so that it cannot rotate. The movable pressure roller 6 is configured to be able to slide along the length direction of the movable section 42, and both ends of the movable pressure roller 6 are provided with elastic components; The cylinder 3 drives the pressing plate 2 to move downward, so that the movable pressing roller 6 is pressed against the connecting support plate 1. As the pressing plate 2 continues to move downward, the second end of the movable segment 42 is pushed toward the side close to the pressing plate 2, that is, the movable segment 42 swings toward the side close to the pressing plate 2. At the same time, the second end of the movable segment 42 can move in the horizontal direction away from the sewing opening 201. At this time, the movable pressing roller 6 at the second end of the movable segment 42 is subjected to downward pressure and sliding resistance of horizontal movement. The movable pressing roller 6 can move toward the first end of the movable segment 42 and compress the elastic component. The compressed elastic component can apply an elastic thrust to the movable pressing roller 6 to move away from the sewing opening 201 (such as Figure 6 and Figure 7 as shown).
[0031] In this way, the cylinder 3 drives the pressing plate 2 to move downward, so that the movable pressing roller 6 is pressed against the connecting support plate 1 and presses the material on the connecting support plate 1. As the pressing plate 2 moves downward, the movable section 42 swings toward the side close to the pressing plate 2, and the second end of the movable section 42 can move in the horizontal direction away from the sewing opening 201. At this time, the movable pressing roller 6 at the second end of the movable section 42 is subjected to downward pressure and sliding resistance of horizontal movement. The movable pressing roller 6 moves toward the first end of the movable section 42 and compresses the elastic component. When the elastic component is compressed to the maximum compression length, the pressing plate 2 continues to move downward. At this time, the movable pressing roller 6 moves with the second end of the movable section 42 in the direction away from the sewing opening 201. The movable pressing roller 6 uses friction to apply tension to the material to tighten the material until the elastic plate 4 is flattened. At this time, the movable pressing roller 6 clamps the material on the connecting support plate 1; At the same time, by utilizing the static friction force, the movable pressing roller 6 is always in the position of compressing the elastic component. At this time, the elastic component applies a thrust to the cloth moving away from the sewing opening 201 through the movable pressing roller 6, but under the tension of the material, the elastic component is always in a compressed and stored state. During the sewing process, if the material is dragged and stretched by the needle and the tension is reduced, the elastic component can be released at this time, pushing the movable pressure roller 6 to move away from the sewing opening 201, and pushing the material away from the sewing opening 201, and re-tightening the material, thereby achieving automatic tightening of the material during the sewing process and avoiding wrinkles caused by the material being dragged by the needle.
[0032] Combination Figure 5 and Figure 6 As shown, a plurality of fixed pressing rollers 5 are provided along the length direction of the movable section 42, and the pressing area of the material is increased by the plurality of fixed pressing rollers 5. Meanwhile, the fixed pressing rollers 5 are arranged to rotate in one direction, and the rotating direction is the direction in which the material is tightened.
[0033] In this way, multiple fixed pressure rollers 5 are in contact with the material, increasing the pressing area of the material. When the elastic component is released, the movable pressure roller 6 is pushed to move in the direction away from the sewing opening 201. When the cloth is pulled, the fixed pressure roller 5 can be dragged and rotated by the material. At this time, the material can be pushed by the movable pressure roller 6 in the direction away from the sewing opening 201 to tighten the material again. When the material is pulled by the needle, the material is subjected to a pulling force in the direction of the sewing opening 201. At this time, the fixed pressure roller 5 cannot rotate, so that the friction between the material and the fixed pressure roller 5 is relatively large, thereby preventing the material from being pulled in the direction of the sewing opening 201 and improving the stability of material fixation.
[0034] Combination Figure 8 As shown, one-way bearings 51 are provided at both ends of the fixed pressure roller 5. Both ends of the fixed pressure roller 5 are connected to the support plate 43 through the one-way bearings 51. The one-way bearings 51 allow the fixed pressure roller 5 to rotate in only one direction.
[0035] In a specific embodiment, support plates 43 are provided on both sides of the movable section 42 , the two support plates 43 are arranged parallel to each other, and both ends of the fixed pressing roller 5 are respectively connected to the support plates 43 on both sides.
[0036] Combination Figure 5 and Figure 7 As shown, the elastic component includes a guide rod 7 and a slider 8, the guide rod 7 is fixed on the support plate 43, the slider 8 is slidably connected to the guide rod 7, the guide rod 7 is provided with a spring 9 for applying an elastic thrust to the slider 8, and the two ends of the movable pressure roller 6 are respectively fixedly connected to the sliders 8 of the elastic components on both sides, and the movable pressure roller 6 can slide along the guide rod 7; When the movable section 42 swings to clamp the material, the movable pressure roller 6 slides along the guide rod 7 and compresses the spring 9. The compression spring 9 applies an elastic thrust to the movable pressure roller 6, so that the movable pressure roller 6 can move away from the sewing opening 201 and push the material away from the sewing opening 201, thereby tightening the material again.
[0037] Combination Figure 6 As shown, the diameters of the fixed pressure roller 5 and the movable pressure roller 6 are the same, and the axes of the fixed pressure roller 5 and the movable pressure roller 6 are located on the same plane, which enables the fixed pressure roller 5 and the movable pressure roller 6 to contact and press the material at the same time, avoiding the phenomenon that the material cannot be pressed at the same time due to height difference.
[0038] Combination Fig. 9 As shown, the movable pressing roller 6 includes a hard roller 61 and a rubber sleeve 62. The rubber sleeve 62 is fixedly mounted on the outside of the hard roller 61. The hard roller 61 can maintain the movable pressing roller 6 from deforming in the axial direction, so that the movable pressing roller 6 can press the cloth evenly in the length direction to avoid gaps due to bending. At the same time, the rubber sleeve 62 can increase the friction with the material and can stably apply thrust to the material.
[0039] The working principle of the present invention is as follows: the material to be sewn is placed on the connecting support plate 1, and then the cylinder 3 drives the pressing plate 2 to move downward, and the movable pressing roller 6 is pressed against the connecting support plate 1 and presses the material on the connecting support plate 1. As the pressing plate 2 moves downward, the movable section 42 swings toward the side close to the pressing plate 2, and the second end of the movable section 42 can move in the horizontal direction away from the sewing opening 201. At this time, the movable pressing roller 6 at the second end of the movable section 42 is subjected to downward pressure and sliding resistance of horizontal movement, and the movable pressing roller 6 moves toward the first end of the movable section 42 and compresses the elastic component. When the elastic component is compressed to the maximum compression length, the pressing plate 2 continues to move downward. At this time, the movable pressing roller 6 moves with the second end of the movable section 42 in the direction away from the sewing opening 201. The movable pressing roller 6 uses friction to apply tension to the material to tighten the material until the elastic plate 4 is flattened. At this time, the movable pressing roller 6 clamps the material on the connecting support plate 1; At the same time, by utilizing the static friction force, the movable pressing roller 6 is always in the position of compressing the elastic component. At this time, the elastic component applies a thrust to the cloth moving away from the sewing opening 201 through the movable pressing roller 6, but under the tension of the material, the elastic component is always in a compressed and stored state. During the sewing process, if the material is stretched by the needle and the tension is reduced, the elastic component can be released, pushing the movable pressure roller 6 to move away from the sewing opening 201, and pushing the material away from the sewing opening 201, and re-tightening the material, thereby achieving automatic tightening of the material during the sewing process and avoiding wrinkles caused by the material being dragged by the needle.
[0040] In summary of the above embodiments: by arranging an elastic plate 4 around the sewing opening 201, and the elastic plate 4 is provided with an inclined movable section 42, when the cylinder 3 drives the pressing plate 2 to move downward, the movable section 42 swings toward the side close to the pressing plate 2, and the second end of the movable section 42 can move in the horizontal direction away from the sewing opening 201, exerting a thrust on the material to move away from the sewing opening 201, so that the material is tightened, and there is no need to additionally arrange a clamp arm that moves horizontally and a cylinder, pipeline and control valve that drive the clamp arm, etc., thereby reducing the cost of the clamp and the subsequent maintenance costs; By arranging a slidable movable pressure roller 6 at the second end of the movable section 42 of the elastic plate 4, when the cylinder 3 drives the pressure plate 2 to move downward to clamp the material, the movable pressure roller 6 is subjected to downward pressure and sliding resistance of horizontal movement, and the movable pressure roller 6 can move toward the first end of the movable section 42, and compress the elastic component to store force. During the sewing process, if the material is dragged and stretched by the needle and the tension is reduced, the elastic component can be released to push the movable pressure roller 6 to move away from the sewing opening 201, and push the material away from the sewing opening 201, and re-tighten the material, thereby realizing automatic tightening of the material during the sewing process and avoiding wrinkles caused by the material being dragged by the needle.
[0041] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.
[0042] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.
Claims
1. A fixing fixture for sewing with a sewing machine, characterized in that: It comprises a connecting support plate (1) and a pressing plate (2) arranged above the connecting support plate (1), wherein the pressing plate (2) is provided with a sewing opening (201); A cylinder (3), the telescopic end of the cylinder (3) being connected to the pressing plate (2) and being used to drive the pressing plate (2) to move up and down, so that the pressing plate (2) can press the material onto the connecting support plate (1); The pressing plate (2) is provided with a plurality of elastic plates (4), the plurality of elastic plates (4) being distributed around the sewing opening (201) and being located between the connecting support plate (1) and the pressing plate (2), the elastic plate (4) being provided with a fixed section (41) and a movable section (42), the fixed section (41) being connected to the pressing plate (2), the movable section (42) being provided with a first end and a second end, the first end of the movable section (42) being connected to the fixed section (41), the second end of the movable section (42) being inclined toward a side close to the connecting support plate (1), when the pressing plate (2) moves downward, the second end of the movable section (42) is pushed toward a side close to the connecting support plate (1) in a height direction, and the second end of the movable section (42) can move in a horizontal direction away from the sewing opening (201); The second end of the movable section (42) is connected to a movable pressure roller (6), and the movable pressure roller (6) is arranged to be able to slide along the length direction of the movable section (42). Both ends of the movable pressure roller (6) are provided with elastic components. When the second end of the movable section (42) is pushed toward a side close to the connecting support plate (1), the elastic component is compressed and exerts an elastic force on the movable pressure roller (6) to move in a direction away from the sewing opening (201).
2. The fixing fixture for sewing by a sewing machine according to claim 1, characterized in that: A plurality of fixed pressure rollers (5) capable of unidirectional rotation are provided along the length direction of the movable section (42), and the rotation direction of the fixed pressure rollers (5) is set to enable the material to be tightened.
3. The fixing fixture for sewing by a sewing machine according to claim 2, characterized in that: Support plates (43) are provided on both sides of the movable section (42), the two support plates (43) are arranged parallel to each other, and the two ends of the fixed pressure roller (5) are respectively connected to the support plates (43) on both sides.
4. The fixing fixture for sewing by a sewing machine according to claim 3, characterized in that: The elastic component comprises a guide rod (7) and a slider (8); the guide rod (7) is fixed on the support plate (43); the slider (8) is slidably connected to the guide rod (7); a spring (9) is provided on the guide rod (7) for applying an elastic thrust to the slider (8); and the movable pressure roller (6) is connected to the slider (8).
5. The fixing fixture for sewing by a sewing machine according to claim 3, characterized in that: One-way bearings (51) are provided at both ends of the fixed pressure roller (5), and the two ends of the fixed pressure roller (5) are connected to the support plate (43) via the one-way bearings (51).
6. The fixing fixture for sewing by a sewing machine according to claim 2, characterized in that: The fixed pressing roller (5) and the movable pressing roller (6) have the same diameter, and the axes of the fixed pressing roller (5) and the movable pressing roller (6) are located on the same plane.
7. The fixing fixture for sewing by a sewing machine according to claim 1, characterized in that: The movable pressing roller (6) comprises a hard roller (61) and a rubber sleeve (62), wherein the rubber sleeve (62) is sleeved and fixed on the outside of the hard roller (61).
8. The fixing fixture for sewing by a sewing machine according to claim 1, characterized in that: A connecting frame (11) is provided on one side of the connecting support plate (1), the connecting frame (11) is arranged in an L-shape, and the cylinder (3) is fixed on the connecting frame (11).
9. The fixing fixture for sewing by a sewing machine according to claim 8, characterized in that: Two locking rods (12) are fixed on the connecting frame (11), and the connecting frame (11) is connected to a servo drive device of a sewing machine via the locking rods (12).
10. The fixing fixture for sewing by a sewing machine according to claim 1, characterized in that: A sewing area (101) is provided on the connecting support plate (1), and the sewing area (101) is located within the range of the sewing opening (201).