A machine for sewing inside and outside corners with equidistant stitches

Abstract

The utility model relates to sewing machine technical field especially discloses a kind of in and out turning equal-distance stitch sewing machine, including rack, sewing machine head being set on rack, pose data acquisition module and control center;Rack is also provided with the moving seat for moving the sewing piece to be waited, sewing machine head, pose data acquisition module, moving seat are electrically connected with control center, pose data acquisition module is set on moving seat, moving seat is used to move the sewing piece to be waited, sewing machine head carries out sewing operation to the sewing piece to be waited placed on moving seat;Pose data acquisition module is used to obtain the position data, pose data or / and speed data in the movement process of the sewing piece to be waited on moving seat, and data transmission is returned to control center and is handled by algorithm, control center controls the sewing speed of sewing machine head according to the data after processing, realizes the stitch consistency of in and out turning and straight line movement.

Description

Technical Field

[0001] This utility model relates to the field of sewing machine technology, and in particular discloses a sewing machine with equidistant stitches for inward and outward turning. Background Technology

[0002] In the traditional sewing machine field, during sewing operations, especially in scenarios involving complex sewing paths such as inward and outward turns, it is difficult to ensure the consistency of stitch length during inward and outward turns and straight-line movement. This seriously affects the sewing quality and aesthetics. Existing sewing machines lack effective positional data acquisition and feedback mechanisms during the movement of the workpiece and the sewing operation, making it impossible to accurately adjust the sewing speed of the sewing machine head based on the actual movement of the workpiece. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a sewing machine with equidistant stitches for inward and outward turning.

[0004] To achieve the above objectives, this utility model provides a sewing machine with equidistant stitches for inward and outward turning, comprising a frame, a sewing machine head mounted on the frame, a position and posture data acquisition module, and a control center. The frame also includes a movable seat for moving the workpiece to be sewn. The sewing machine head, position and posture data acquisition module, and movable seat are all electrically connected to the control center. The position and posture data acquisition module is mounted on the movable seat, which is used to move the workpiece to be sewn. The sewing machine head performs sewing operations on the workpiece placed on the movable seat. The position and posture data acquisition module acquires the position data, posture data, and / or speed data of the workpiece during its movement on the movable seat and transmits the data back to the control center for algorithm processing. The control center adjusts the sewing speed of the sewing machine head based on the processed data to achieve consistent stitch length for inward and outward turning and linear movement.

[0005] The pose data acquisition module is a lidar sensor or a camera sensor. The pose data acquisition module is used to take pictures and / or videos of the workpiece to be sewn during the movement of the moving seat, and transmit the pictures and / or videos to the control center. The control center calculates and processes the data transmitted back by the pose data acquisition module and adjusts the sewing speed of the sewing machine head according to the processed data to achieve consistent stitch length during inward and outward turns and linear movement.

[0006] The position, posture, or speed data of the workpiece being sewn is accurately acquired by the pose data acquisition module and transmitted to the control center. After calculation and processing, the speed of the sewing machine head is intelligently adjusted to ensure consistent stitch pitch during inward and outward turns and straight-line movement, significantly improving sewing quality. The moving seat drives the workpiece to be sewn, and the pose data acquisition module collects data in real time. The control center adjusts the sewing parameters accordingly to achieve efficient and precise sewing operations.

[0007] The camera sensor includes a camera module and a lighting compensation module mounted on the moving base. The camera module takes pictures of the workpiece to be sewn during the movement of the moving base, and the lighting compensation module is used to compensate for the light on the workpiece to be sewn during the movement of the moving base.

[0008] By integrating a camera module and a lighting compensation module onto the mobile base, the camera module can capture clear images of the sewn parts in real time while they are in motion, while the lighting compensation module ensures uniform and sufficient lighting under various lighting conditions, thereby improving the quality and stability of image acquisition.

[0009] The illumination compensation module includes an LED light mounted on the sewing machine head, a transparent shell covering the LED light, and a dimming control component electrically connected to the LED light. The dimming control component is used to adjust the brightness of the LED light.

[0010] The LED lights mounted on the sewing machine head provide a stable and focused light source for the camera module, effectively solving problems such as image blurring and color distortion caused by insufficient or uneven lighting, greatly improving the quality of images of the workpiece captured by the camera module. The transparent housing protects the LED lights from external dust and debris, ensuring their normal operation, while not obstructing light transmission and guaranteeing optimal illumination. The dimming control component is electrically connected to the LED lights, allowing for flexible and precise adjustment of the LED brightness according to different ambient lighting conditions, ensuring the light intensity is always at its optimal level. This further enhances the adaptability and effectiveness of lighting compensation, guaranteeing that the camera module can acquire clear and accurate images of the workpiece in various complex environments, providing a reliable basis for subsequent sewing operations.

[0011] The movable seat includes a fabric feeding assembly, and the sewing machine head includes a mounting frame, a pressing assembly, a sewing assembly, and a threading assembly mounted on the mounting frame. The pressing assembly is positioned above the fabric feeding assembly and includes a first driving member and a pressing roller driven to rotate by the first driving member. The fabric feeding assembly includes a second driving member and a rolling roller driven to rotate by the second driving member. The workpiece to be sewn is clamped between the pressing assembly and the fabric feeding assembly, and its movement is achieved by the rotation of the pressing roller and the rolling roller.

[0012] The pressing and holding assembly works in conjunction with the fabric feeding assembly. Through the rotation of the pressure roller and the rolling roller, it can stably and accurately clamp and move the workpiece to be sewn, ensuring the accuracy of fabric movement during sewing, reducing fabric deviation, wrinkles, and other problems, and improving sewing quality. The speed and direction of the first and second drive components are controlled according to sewing requirements. The first drive component drives the pressure roller to rotate, and the second drive component drives the rolling roller to rotate. Their combined action ensures that the workpiece to be sewn moves smoothly under the clamping of the pressure roller and the rolling roller, providing a continuous and stable fabric supply to the sewing assembly and achieving precise sewing operations.

[0013] The threading assembly includes a mounting plate on the sewing machine head, a threading plate on the mounting plate, a threading guide rod, and a tension adjuster; the thread passes through the threading hole of the threading plate, the threading guide rod, and the tension adjuster in sequence before being released onto the sewing assembly.

[0014] The thread smoothly passes through each component along a pre-set path, effectively reducing jamming and tangling issues and improving threading efficiency. The tension regulator precisely controls the thread tension to ensure sewing quality. Furthermore, each component is easy to install, fix, and maintain, saving time and costs. The thread passes sequentially through the threading hole, threading guide, and tension regulator. The tension is controlled by adjusting the tension regulator, and finally, the thread is released into the sewing assembly.

[0015] The sewing assembly includes a third drive member, a first rotating link connected to the output end of the third drive member, a cam rotatably mounted on the first rotating link, a second rotating link fixedly mounted on the cam, and a needle bar component; the end of the second rotating link away from the cam is provided with a clamping part, which is used to clamp and fix the needle bar component.

[0016] The third drive component, in conjunction with the multi-stage linkage and cam structure, efficiently converts rotational power into precise up-and-down reciprocating motion of the needle bar component, significantly improving sewing efficiency and quality. The clamping mechanism facilitates the installation and removal of the needle bar component, simplifying maintenance and replacement and reducing operating costs. The overall structure is compact, and the transmission is stable and reliable, providing a strong guarantee for the efficient and stable operation of the sewing machine.

[0017] The needle bar component includes a needle bar frame, a needle bar body installed inside the needle bar frame, and an oiled cotton board installed on the needle bar frame.

[0018] The needle bar is installed inside the needle bar holder, providing stable support for the sewing needle and ensuring sewing accuracy and quality. An oiling pad is placed on the needle bar holder to lubricate the needle bar, reducing friction and wear, extending the service life of the needle bar components, and ensuring smooth needle bar movement, improving sewing efficiency and reducing malfunctions.

[0019] Both the pressing wheel and the rolling wheel have anti-slip patterns on their surfaces, which are either wavy or diamond-shaped.

[0020] The pressure rollers and rolling rollers have wavy or diamond-shaped anti-slip patterns on their surfaces, which significantly increases the friction between them and the workpiece being sewn. During sewing, this increased friction effectively prevents the workpiece from slipping or shifting, ensuring that the fabric moves stably and accurately along the predetermined path. This improves sewing precision and quality, and reduces problems such as skewing stitches and skipped stitches caused by inaccurate fabric movement.

[0021] The movable seat includes a housing and a cover. The cover is rotatably fitted onto the housing via a hinge. The side of the cover is also provided with heat dissipation strip holes.

[0022] The mobile base features a hinged design where the housing and cover rotate and close, allowing for flexible opening of the cover. When maintenance, repair, or replacement of internal components is required, operators can easily open the cover to directly access the internal structure without complex disassembly, significantly saving maintenance time and costs and improving equipment maintainability. Ventilation vents on the side of the cover effectively increase the airflow area between the mobile base and the outside. During operation, internal heat is quickly dissipated through these vents, reducing internal temperature and preventing overheating that could lead to performance degradation, accelerated aging, or even damage to components. This extends the lifespan of the mobile base and its internal components, ensuring stable equipment operation.

[0023] The movable base is also equipped with a wire-cutting assembly, which includes a first transmission gear, a third rotating linkage connected to the first transmission gear, a rotating shaft, a blade holder fixedly mounted above the rotating shaft, and a fixed blade fixedly mounted on the side of the blade holder. The blade holder is equipped with a movable blade. The end of the first rotating linkage near the third driving member is also equipped with a second transmission gear, which is driven by the first transmission gear via a belt. The end of the third rotating linkage away from the first transmission gear is equipped with a first bevel gear, and the end of the rotating shaft near the third rotating linkage is equipped with a second bevel gear. The first bevel gear and the second bevel gear mesh perpendicularly. The third driving member rotates to drive the first bevel gear on the third rotating linkage to rotate, the first bevel gear drives the second bevel gear to rotate, and the second bevel gear drives the rotating shaft to rotate, which in turn drives the movable blade to rotate to approach or move away from the fixed blade to cut the wire.

[0024] This thread-cutting assembly is powered by a third drive unit, which, through a series of gear transmissions and linkage mechanisms, converts rotational motion into the reciprocating motion of the moving blade relative to the fixed blade. This achieves rapid and precise thread cutting, improving the automation level and efficiency of the sewing machine and reducing the tedious manual thread-cutting operation. The use of vertical gear meshing and belt drive ensures the accuracy and stability of power transmission. Gear transmission offers advantages such as accurate transmission ratio, high efficiency, and reliable operation, ensuring the precise matching of the moving and fixed blades and improving thread-cutting quality. Belt drive acts as a buffer and adjusts the transmission ratio, making the entire transmission system operate more smoothly.

[0025] The pose data acquisition module can be set on the top, bottom, left, or right side of the mobile base, or it can be installed inside or outside the mobile base.

[0026] Figure 12 The diagram in the middle shows the stitch length when sewing without this sewing equipment. When using a regular sewing machine on the market, the stitch length will vary due to changes in angle when the fabric turns, which will affect the appearance of the product. Figure 13The diagram shows the stitch length of the sewing machine using this invention. The sewing machine of this invention uses a position data acquisition module to collect data such as turning speed, and then the control center calculates and dynamically adjusts the speed of the sewing component drive to make the stitching frequency in the turning area precisely match the moving speed of the workpiece to be sewn, thereby achieving stitch length compensation. This makes the stitch length of the product consistent when sewing in a turning area as when sewing in a straight line, resulting in a more aesthetically pleasing product.

[0027] The beneficial effects of this utility model are as follows: This sewing machine with equidistant stitches for inward and outward turning accurately acquires the movement data of the workpiece to be sewn through a posture data acquisition module and transmits it to the control center. After processing, the speed of the sewing machine head is intelligently adjusted to ensure that the stitch length is consistent during inward and outward turning and straight-line movement, thereby improving sewing quality. The camera sensor and the light compensation module work together to ensure clear and stable image acquisition. The components of the moving seat are reasonably designed. The pressing component and the fabric feeding component work together to achieve stable fabric movement. The threading component improves threading efficiency and quality. The sewing component has stable and efficient transmission. The needle bar component ensures sewing accuracy and lifespan. The anti-slip design of the pressure roller and the rolling roller prevents fabric deviation. The moving seat shell and cover structure are easy to maintain and have good heat dissipation. The thread cutting component achieves fast and accurate cutting of the thread through a series of transmission mechanisms, improving the degree of automation and work efficiency. The overall design makes the sewing machine operate efficiently, accurately, and stably, improving sewing quality and user experience. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0029] Figure 2 This is a structural schematic diagram of the entire utility model from another perspective;

[0030] Figure 3 For the present utility model Figure 2 Enlarged schematic diagram of structure A in the middle;

[0031] Figure 4 This is a schematic diagram of the structure of the pressing component of this utility model;

[0032] Figure 5 This is a schematic diagram of the fabric feeding assembly of this utility model;

[0033] Figure 6 For the present utility model Figure 5 Enlarged schematic diagram of the B-structure;

[0034] Figure 7 This is a schematic diagram of the threading assembly of this utility model;

[0035] Figure 8 This is a structural schematic diagram of the sewing assembly and thread-cutting assembly of this utility model;

[0036] Figure 9 This is a schematic diagram of the structure of the cam, second rotating connecting rod, clamping part and needle bar component of this utility model;

[0037] Figure 10 This is a schematic diagram of the needle bar component of this utility model;

[0038] Figure 11 This is a schematic diagram of the structure of the tool holder, fixed tool, and movable tool of this utility model;

[0039] Figure 12 A schematic diagram showing the stitch length for sewing without using this sewing equipment;

[0040] Figure 13 This is a structural diagram showing the stitch length when sewing using this sewing equipment.

[0041] The reference numerals in the figures include:

[0042] 1. Frame; 2. Sewing machine head; 3. Posture data acquisition module; 4. Control center; 5. Moving base; 6. Camera module; 7. Light compensation module; 8. LED light; 9. Dimming control component; 11. Fabric feeding component; 12. Mounting frame; 13. Pressing component; 14. Sewing component; 15. Threading component; 16. First drive component; 17. Pressing roller; 18. Second drive component; 19. Rolling roller; 21. Mounting plate; 22. Threading plate; 23. Threading guide rod; 24. Tension adjuster; 5. Third driving component; 26. First rotating connecting rod; 27. Cam; 28. Second rotating connecting rod; 29. ​​Needle bar assembly; 31. Clamping part; 32. Needle bar holder; 33. Needle bar body; 34. Oiled cotton plate; 35. Housing; 36. Cover; 37. Heat dissipation strip hole; 38. Thread cutting assembly; 39. First transmission gear; 41. Third rotating connecting rod; 42. Rotating shaft; 43. Blade holder; 44. Fixed blade; 45. Movable blade; 46. Second transmission gear; 47. First bevel gear; 48. Second bevel gear. Detailed Implementation

[0043] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0044] Please see Figures 1 to 13As shown, this utility model discloses a sewing machine with equidistant stitches for inward and outward turning, comprising a frame 1, a sewing machine head 2 mounted on the frame 1, a position and posture data acquisition module 3, and a control center 4. The frame 1 also includes a movable seat 5 for moving the workpiece to be sewn. The sewing machine head 2, position and posture data acquisition module 3, and movable seat 5 are all electrically connected to the control center 4. The position and posture data acquisition module 3 is mounted on the movable seat 5, which is used to move the workpiece. The sewing machine head 2 performs sewing operations on the workpiece placed on the movable seat 5. The position and posture data acquisition module 3 acquires the position data, posture data, and / or speed data of the workpiece during its movement on the movable seat 5, and transmits the data back to the control center 4 for algorithm processing. The control center 4 adjusts the sewing speed of the sewing machine head 2 based on the processed data to achieve consistent stitch length for inward and outward turning and linear movement. Stitch length comparison example. Figure 12 and Figure 13 As shown.

[0045] The pose data acquisition module 3 is a lidar sensor or a camera sensor. The pose data acquisition module 3 is used to take pictures and / or videos of the workpiece to be sewn during the movement of the moving seat 5, and transmit the pictures and / or videos to the control center 4. The control center 4 calculates and processes the data transmitted back by the pose data acquisition module 3 and adjusts the sewing speed of the sewing machine head 2 according to the processed data to achieve consistent stitch length during inward and outward turns and linear movement.

[0046] The position, posture, or speed data of the workpiece being sewn is accurately acquired by the posture data acquisition module 3 and transmitted to the control center 4. After calculation and processing, the speed of the sewing machine head 2 is intelligently adjusted to ensure that the stitch length is consistent during inward and outward turns and straight-line movement, greatly improving sewing quality. The moving seat 5 drives the workpiece to be sewn, and the posture data acquisition module 3 collects data in real time. The control center 4 adjusts the sewing parameters accordingly to achieve efficient and precise sewing operations.

[0047] The camera sensor includes a camera module 6 and an illumination compensation module 7 mounted on the movable base 5. The camera module 6 takes pictures of the workpiece to be sewn during the movement of the movable base 5, and the illumination compensation module 7 is used to compensate for the light on the workpiece to be sewn during the movement of the movable base 5.

[0048] By integrating a camera module 6 and an illumination compensation module 7 on the mobile base 5, the camera module 6 can capture clear images of the sewn parts in real time while they are moving, while the illumination compensation module 7 ensures that uniform and sufficient illumination can be provided under various lighting conditions, thereby improving the quality and stability of image acquisition.

[0049] The illumination compensation module 7 includes an LED light 8 mounted on the sewing machine head 2, a transparent shell covering the LED light 8, and a dimming control component 9 electrically connected to the LED light 8. The dimming control component 9 is used to adjust the brightness of the LED light 8.

[0050] The LED light mounted on the sewing machine head 2 provides a stable and concentrated light source for the camera module 6, effectively solving problems such as image blurring and color distortion caused by insufficient or uneven lighting, and greatly improving the quality of images of the workpiece captured by the camera module 6. The transparent shell protects the LED light from external dust and debris, ensuring its normal operation, while not obstructing light transmission and guaranteeing illumination. The dimming control component 9 is electrically connected to the LED light, allowing for flexible and precise adjustment of the LED light's brightness according to different ambient lighting conditions, ensuring the light intensity is always at its optimal level. This further enhances the adaptability and effectiveness of lighting compensation, ensuring that the camera module 6 can acquire clear and accurate images of the workpiece in various complex environments, providing a reliable basis for subsequent sewing operations.

[0051] The movable seat 5 includes a fabric feeding assembly 11, and the sewing machine head 2 includes a mounting frame 12, a pressing assembly 13, a sewing assembly 14, and a threading assembly 15 disposed on the mounting frame 12. The pressing assembly 13 is disposed above the fabric feeding assembly 11 and includes a first driving member 16 and a pressing roller 17 driven to rotate by the first driving member 16. The fabric feeding assembly 11 includes a second driving member 18 and a rolling roller 19 driven to rotate by the second driving member 18. The workpiece to be sewn is clamped between the pressing assembly 13 and the fabric feeding assembly 11 and moves through the rotation of the pressing roller 17 and the rolling roller 19.

[0052] The pressing and holding assembly 13 works in conjunction with the fabric feeding assembly 11. Through the rotation of the pressing roller 17 and the rolling roller 19, it can stably and accurately clamp and move the workpiece to be sewn, ensuring the accuracy of fabric movement during sewing, reducing fabric deviation, wrinkles, and other problems, and improving sewing quality. The rotational speed and direction of the first drive component 16 and the second drive component 18 are controlled according to sewing requirements. The first drive component 16 drives the pressing roller 17 to rotate.

[0053] The second drive component 18 drives the cloth roller 19 to rotate. The two work together to make the workpiece to be sewn move smoothly under the clamping of the pressure roller 17 and the cloth roller 19, providing a continuous and stable supply of fabric to the sewing assembly 14 and realizing precise sewing operations.

[0054] The threading assembly 15 includes a mounting plate 21 on the sewing machine head 2, a threading plate 22 on the mounting plate 21, a threading guide rod 23, and a tension adjuster 24; the thread passes through the threading hole of the threading plate 22, the threading guide rod 23, and the tension adjuster 24 in sequence and is then released onto the sewing assembly 14.

[0055] The thread smoothly passes through each component along a set path, effectively reducing jamming and tangling issues and improving threading efficiency. The tension regulator 24 can precisely control the thread tension to ensure sewing quality. Furthermore, the installation, fixing, and maintenance of each component are convenient, saving time and costs. The thread passes sequentially through the threading hole, threading guide 23, and tension regulator 24. The thread tension is controlled by adjusting the tension regulator 24, and finally, the thread is released into the sewing assembly 14.

[0056] The sewing assembly 14 includes a third drive member 25, a first rotating link 26 connected to the output end of the third drive member 25, a cam 27 rotatably mounted on the first rotating link 26, a second rotating link 28 fixedly mounted on the cam 27, and a needle bar component 29; the second rotating link 28 is provided with a clamping part 31 at one end away from the cam 27, and the clamping part 31 is used to clamp and fix the needle bar component 29.

[0057] The third drive component 25, in conjunction with the multi-stage linkage and cam 27, efficiently converts rotational power into precise up-and-down reciprocating motion of the needle bar component 29, significantly improving sewing efficiency and quality. The clamping part 31 facilitates the installation and removal of the needle bar component 29, simplifying maintenance and replacement and reducing operating costs. The overall structure is compact, and the transmission is stable and reliable, providing a strong guarantee for the efficient and stable operation of the sewing machine.

[0058] The needle bar component 29 includes a needle bar frame 32, a needle bar body 33 installed in the needle bar frame 32, and an oiled cotton board 34 installed on the needle bar frame 32.

[0059] The needle bar body 33 is installed inside the needle bar holder 32, providing stable support for the sewing needle and ensuring sewing accuracy and quality. The oiled cotton plate 34 is set on the needle bar holder 32 to lubricate the needle bar body 33, reduce friction, reduce wear, extend the service life of the needle bar component 29, and at the same time ensure smooth movement of the needle bar body 33, improve sewing efficiency, and reduce the occurrence of failures.

[0060] The surfaces of the pressing roller 17 and the rolling roller 19 are provided with anti-slip patterns, which are wavy or diamond-shaped.

[0061] The pressure roller 17 and the rolling roller 19 have wavy or diamond-shaped anti-slip patterns on their surfaces, which significantly increases the friction between them and the workpiece to be sewn. During sewing, this increased friction effectively prevents the workpiece from slipping or shifting, ensuring that the fabric moves stably and accurately along the predetermined path. This improves sewing precision and quality, and reduces problems such as skewing stitches and skipped stitches caused by inaccurate fabric movement.

[0062] The movable seat 5 includes a housing 35 and a cover 36. The cover 36 is rotatably fitted onto the housing 35 via a hinge. The side of the cover 36 is also provided with heat dissipation strip holes 37.

[0063] The movable base 5 employs a hinged design where the housing 35 and cover 36 rotate and close, allowing the cover 36 to open flexibly. When maintenance, repair, or replacement of internal components is required, operators can easily open the cover 36 to directly access the internal structure without complex disassembly, significantly saving maintenance time and costs and improving equipment maintainability. The cover 36 has ventilation holes 37 on its side, effectively increasing the airflow area between the inside of the movable base 5 and the outside. During operation, internal heat can be quickly dissipated through the ventilation holes 37, reducing internal temperature and preventing overheating that could lead to component performance degradation, accelerated aging, or even damage. This extends the service life of the movable base 5 and its internal components, ensuring stable equipment operation.

[0064] The movable base 5 is also provided with a wire cutting assembly 38, which includes a first transmission gear 39, a third rotating connecting rod 41 connected to the first transmission gear 39, a rotating shaft 42, a blade holder 43 fixedly mounted above the rotating shaft 42, and a fixed blade 44 fixedly mounted on the side of the blade holder 43. The blade holder 43 is provided with a movable blade 45. A second transmission gear 46 is also provided at the end of the first rotating connecting rod 26 near the third driving member 25. The first transmission gear 39 is driven by the second transmission gear 46 via a belt. A first bevel gear 47 is provided at the end of the rotating shaft 42 away from the first transmission gear 39, and a second bevel gear 48 is provided at the end of the rotating shaft 42 near the third rotating connecting rod 41. The first bevel gear 47 and the second bevel gear 48 mesh perpendicularly. The third driving member 25 rotates to drive the first bevel gear 47 on the third rotating connecting rod 41 to rotate. The first bevel gear 47 drives the second bevel gear 48 to rotate. The second bevel gear 48 drives the rotating shaft 42 to rotate, thereby driving the movable blade 45 to rotate to approach or move away from the fixed blade 44 to cut the wire.

[0065] The thread-cutting assembly 38 is powered by the third drive component 25. Through a series of gear transmissions and linkage mechanisms, it converts the rotational motion into the reciprocating motion of the movable blade 45 relative to the fixed blade 44, achieving rapid and precise thread cutting. This improves the automation level and efficiency of the sewing machine and reduces the tedious manual thread cutting operation. The use of vertical gear meshing and belt drive ensures the accuracy and stability of power transmission. Gear transmission has advantages such as accurate transmission ratio, high efficiency, and reliable operation, ensuring the precise matching between the movable blade 45 and the fixed blade 44 and improving the thread cutting quality. Belt drive acts as a buffer and adjusts the transmission ratio, making the entire transmission system operate more smoothly.

[0066] The pose data acquisition module 3 can be set on the top, bottom, left, or right side of the movable seat 5, or it can be installed inside or outside the movable seat 5.

[0067] Figure 12The diagram in the middle shows the stitch length when sewing without this sewing equipment. When using a regular sewing machine on the market, the stitch length will vary due to changes in angle when the fabric turns, which will affect the appearance of the product. Figure 13 The diagram shows the stitch length of the sewing machine using this invention. The sewing machine of this invention uses the posture data acquisition module 3 to collect data such as turning speed, and then the control center 4 calculates and dynamically adjusts the speed of the sewing component 14 drive to make the stitching frequency in the turning area accurately match the moving speed of the workpiece to be sewn, thereby achieving stitch length compensation. This makes the stitch length of the product consistent when sewing in a turning area with the stitch length when sewing in a straight line, resulting in a more aesthetically pleasing product.

[0068] The rest of this embodiment is the same as that in Embodiment 1. Features not explained in this embodiment are explained using the methods in Embodiment 1, and will not be repeated here.

[0069] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. An inside-outside corner equidistant stitch sewing machine characterized by: The system includes a frame (1), a sewing machine head (2) mounted on the frame (1), a pose data acquisition module (3), and a control center (4). The frame (1) also has a movable seat (5) for moving the workpiece to be sewn. The sewing machine head (2), pose data acquisition module (3), and movable seat (5) are all electrically connected to the control center (4). The pose data acquisition module (3) is mounted on the movable seat (5), which is used to move the workpiece to be sewn. The sewing machine head (2) performs sewing operations on the workpiece placed on the movable seat (5). The pose data acquisition module (3) is used to acquire the pose data of the workpiece on the movable seat (5) during its movement. Position data, posture data and / or speed data are transmitted back to the control center (4) for algorithm processing. The control center (4) adjusts the sewing speed of the sewing machine head (2) according to the processed data to achieve consistent stitch length for inward and outward turning and straight-line movement. The posture data acquisition module (3) is a laser radar sensor or a camera sensor. The camera sensor includes a camera module (6) and an illumination compensation module (7) set on the moving seat (5). The camera module (6) takes pictures of the workpiece to be sewn during the movement of the moving seat (5), and the illumination compensation module (7) is used to compensate for the light on the workpiece to be sewn during the movement of the moving seat (5).

2. The sewing machine with equidistant stitches for inward and outward turning as described in claim 1, characterized in that: The illumination compensation module (7) includes an LED lamp (8) mounted on the sewing machine head (2), a transparent shell covering the LED lamp (8), and a dimming control component (9) electrically connected to the LED lamp (8). The dimming control component (9) is used to adjust the brightness of the LED lamp (8).

3. A sewing machine with equidistant stitches for inward and outward turning, as described in claim 1, characterized in that: The movable seat (5) includes a fabric feeding assembly (11), and the sewing machine head (2) includes a mounting frame (12), a pressing assembly (13) disposed on the mounting frame (12), a sewing assembly (14), and a threading assembly (15); the pressing assembly (13) is disposed above the fabric feeding assembly (11), and the pressing assembly (13) includes a first driving member (16) and a pressing roller (17) driven to rotate by the first driving member (16); the fabric feeding assembly (11) includes a second driving member (18) and a rolling roller (19) driven to rotate by the second driving member (18); the workpiece to be sewn is clamped between the pressing assembly (13) and the fabric feeding assembly (11) and moves by rotating the pressing roller (17) and the rolling roller (19).

4. A sewing machine with equidistant stitches for inward and outward turning, as described in claim 3, characterized in that: The threading assembly (15) includes a mounting plate (21) on the sewing machine head (2), a threading plate (22) on the mounting plate (21), a threading guide rod (23), and a tension adjuster (24); the thread passes through the threading hole of the threading plate (22), the threading guide rod (23), and the tension adjuster (24) in sequence and is then released onto the sewing assembly (14).

5. A sewing machine with equidistant stitches for inward and outward turning, as described in claim 4, characterized in that: The sewing assembly (14) includes a third drive member (25), a first rotating link (26) connected to the output end of the third drive member (25), a cam (27) rotatably mounted on the first rotating link (26), a second rotating link (28) fixedly mounted on the cam (27), and a needle bar component (29); the second rotating link (28) has a clamping part (31) at one end away from the cam (27), which is used to clamp and fix the needle bar component (29); the needle bar component (29) includes a needle bar frame (32), a needle bar body (33) mounted in the needle bar frame (32), and an oiled cotton board (34) mounted on the needle bar frame (32).

6. A sewing machine with equidistant stitches for inward and outward turning, as described in claim 3, characterized in that: The surfaces of the pressing wheel (17) and the rolling wheel (19) are provided with anti-slip patterns, which are wavy or diamond-shaped.

7. A sewing machine with equidistant stitches for inward and outward turning, as described in claim 1, characterized in that: The movable seat (5) includes a housing (35) and a cover (36). The cover (36) is rotated and closed on the housing (35) via a hinge. The side of the cover (36) is also provided with heat dissipation strip holes (37).

8. A sewing machine with equidistant stitches for inward and outward turning, as described in claim 4, characterized in that: The movable seat (5) is also provided with a wire cutting assembly (38), which includes a first transmission gear (39), a third rotating connecting rod (41) connected to the first transmission gear (39), a rotating shaft (42), a knife holder (43) fixedly disposed above the rotating shaft (42), and a fixed knife (44) fixedly disposed on the side of the knife holder (43). The knife holder (43) is provided with a movable knife (45). The end of the first rotating connecting rod (26) near the third driving member (25) is also provided with a second transmission gear (46). The first transmission gear (39) is driven by the second transmission gear (46) via a belt. (41) A first bevel gear (47) is provided at the end away from the first transmission gear (39), and a second bevel gear (48) is provided at the end of the rotating shaft (42) near the third rotating link (41). The first bevel gear (47) and the second bevel gear (48) mesh perpendicularly. The third driving member (25) rotates in the opposite direction to drive the first bevel gear (47) on the third rotating link (41) to rotate. The first bevel gear (47) drives the second bevel gear (48) to rotate. The second bevel gear (48) drives the rotating shaft (42) to rotate to drive the movable blade (45) to rotate to approach or move away from the fixed blade (44) to cut the wire.

Images