Deviation correcting device and hemming machine

Abstract

The application discloses a deviation rectifying device and a hemming machine. The hemming machine comprises a fixed support and a cloth guide roller arranged on the fixed support, and the deviation rectifying device comprises a first driving motor, a crank slider assembly and a deviation rectifying piece arranged on the fixed support. The first driving motor comprises a rotating shaft, the crank slider assembly comprises a crank, a first sliding rail, a first slider, a second sliding rail and a connecting rod, the first sliding rail is arranged on the fixed support, the first slider is slidingly arranged on the first sliding rail, the second sliding rail is arranged on the first slider, the connecting rod is slidingly arranged on the second sliding rail, the first sliding rail is parallel to the axial direction of the cloth guide roller, the second sliding rail is perpendicular to the axial direction of the cloth guide roller, the crank is connected with the rotating shaft and the connecting rod, and the deviation rectifying piece is arranged at one end of the connecting rod away from the crank and is used for pushing or pulling the cloth on the cloth guide roller to rectify the deviation under the driving of the first driving motor and the driving of the crank slider assembly. In this way, the deviation rectifying device can replace manual deviation rectification, has high precision and high efficiency.

Description

Technical Field

[0001] This application relates to the field of fabric processing equipment technology, and more specifically, to a correction device and a hem-lowering machine. Background Technology

[0002] Currently, during the hem-folding process of the hem-making machine, the fabric may shift due to the rotation of the guide rollers, leading to sewing errors, increasing the scrap rate, and raising production costs. Therefore, it is necessary to correct the shifted fabric. The main technology involves manual correction by workers; however, manual correction has low accuracy, poor results, and requires long-term human intervention, increasing manpower costs. Summary of the Invention

[0003] This application provides a correction device and a swing mechanism.

[0004] The corrective device according to this application is used in a hem-end machine. The hem-end machine includes a fixed bracket and a guide roller mounted on the fixed bracket. The corrective device includes a first drive motor, a crank-slider assembly, and a corrective component mounted on the fixed bracket. The first drive motor includes a rotating shaft; the crank-slider assembly includes a crank, a first slide rail, a first slider, a second slide rail, and a connecting rod. The first slide rail is mounted on the fixed bracket, the first slider is slidably mounted on the first slide rail, the second slide rail is mounted on the first slider, and the connecting rod is slidably mounted on the second slide rail. The guide of the first slide rail is parallel to the axial direction of the guide roller, and the guide of the second slide rail is perpendicular to the axial direction of the guide roller. The crank connects the rotating shaft and the connecting rod. The corrective component is mounted on the end of the connecting rod away from the crank and is used to push or pull the fabric located on the guide roller for corrective action under the drive of the first drive motor and the crank-slider assembly.

[0005] In this way, during the correction process, the drive motor drives the crank to rotate. The connecting rod, connected to the crank, decomposes the crank's circular motion into linear motion along the first and second slide rails, under the constraint and guidance of the first and second slide rails. Since the guide of the first slide rail is parallel to the axis of the guide roller, and the guide of the second slide rail is perpendicular to the axis of the guide roller, the movement of the connecting rod is restricted to forward and backward movement along the axis of the guide roller and up and down movement along the axis perpendicular to the guide roller. Therefore, the correction component can mimic the pushing and pulling action of a finger. Driven by the up and down movement of the connecting rod, it contacts the fabric. Simultaneously, it pushes and pulls the fabric under the drive of the forward and backward movement of the connecting rod, then separates from the fabric, and then contacts the fabric again under the drive of the up and down movement of the connecting rod. This process is repeated until the fabric is corrected. Therefore, the correction device can replace manual correction, offering high accuracy and efficiency.

[0006] In some embodiments, the correction device includes a second slider, a limiting piece, a limiting seat, and an elastic element. The second slider is slidably disposed on the connecting rod, the limiting piece is fixed on the second slider, and the limiting seat is fixed to the end of the connecting rod away from the crank. The limiting seat is configured to push the limiting piece upward when the connecting rod moves upward. The elastic element connects the limiting piece and the limiting seat and is configured to force the limiting piece to abut against the limiting seat when the connecting rod moves upward or downward, and to continue to stretch when the correction element contacts the fabric and the connecting rod continues to move toward the guide roller, so as to ensure elastic contact between the correction element and the guide roller.

[0007] Thus, by setting a limiting plate, a limiting seat, and an elastic element on the correction device, and connecting the limiting plate and the limiting seat through the elastic element, when the rotating drum contacts the fabric, the elastic force of the elastic element allows the rotating drum to fully compress the fabric, and prevents the limiting plate and the limiting seat from separating during the movement of the guide roller, which would cause the moving trajectory of the rotating drum to change and thus affect the correction effect of the fabric.

[0008] In some embodiments, the correction device includes a limiting block fixed to the limiting seat, the limiting plate having a protrusion, and the limiting block being configured to force the limiting block to abut against the protrusion when the connecting rod moves upward or downward.

[0009] Thus, by setting a limiting block on the limiting seat, and making the limiting block abut against the protrusion formed by the limiting plate when the lever moves, it is possible to prevent the elastic element from being over-compressed, which would cause the rotating drum to over-squeeze the fabric and cause wrinkles.

[0010] In some embodiments, the hem machine includes a second drive motor for driving the guide roller to rotate, the correction component includes a rotating drum, and the correction device includes a third drive motor mounted on the connecting rod. The third drive motor is used to drive the rotating drum to rotate so that the linear velocity of the rotating drum in contact with the fabric is opposite in direction but the same in magnitude as the linear velocity of the guide roller in contact with the fabric.

[0011] In this way, by driving the guide roller and the rotating drum to rotate respectively by the drive motor, and setting the linear velocity direction of the rotating drum to be opposite to that of the guide roller, but the same size, it can avoid the situation where the rotating drum and the fabric are moving in opposite directions when the rotating drum contacts the fabric on the guide roller, so as to avoid the fabric being pulled and wrinkled, which would affect the folding and sewing effect.

[0012] In some embodiments, the correction element includes a synchronous shaft, a synchronous bearing, and a gear. The rotating drum is disposed on the synchronous shaft, the synchronous bearing is sleeved on the synchronous shaft, and the gear connects the third drive motor and the synchronous shaft and is configured to drive the rotating drum, the synchronous shaft, and the synchronous bearing to rotate when driven by the third drive motor.

[0013] In this way, the drive motor and the rotating drum are connected in the correction component through gears, synchronous shafts and synchronous bearings, so that the drive motor can drive the rotating drum to rotate and cooperate with the guide roller, thereby achieving the correction of the fabric through the rotation of the rotating drum.

[0014] In some embodiments, the correction device includes two sets of the crank-slider assemblies and two correction elements. The correction device includes a rotating shaft and a transmission element. The rotating shaft is rotatably mounted on the fixed bracket. The transmission element connects the rotating shaft and the rotating shaft. The two sets of crank-slider assemblies are disposed on both sides of the rotating shaft and are configured such that, when the rotating shaft rotates, the two sets of crank-slider assemblies move alternately to cause the two correction elements to alternately push and pull the fabric located on the guide roller.

[0015] Thus, by setting two crank-slider assemblies connected by a rotating shaft on the correction device, the two crank-slider assemblies can alternately correct the fabric on the guide roller when the motor drives the rotating shaft, thereby achieving continuous correction of the fabric.

[0016] In some embodiments, the fixed bracket includes a horizontal plate, a vertical plate, a cylinder, and a third slide rail disposed on the vertical plate. The horizontal plate is disposed on the third slide rail, and the cylinder is disposed on the vertical plate and configured to drive the horizontal plate to move on the third slide rail when the cylinder is in the working state. The horizontal plate is parallel to the axial direction of the guide roller, the vertical plate is perpendicular to the axial direction of the guide roller, and the guide of the third slide rail is perpendicular to the axial direction of the guide roller.

[0017] Thus, by providing a first slide rail on the upright plate of the fixed bracket, and by moving the horizontal plate along the first slide rail, the correction component connected to the horizontal plate can be moved away from the guide roller along the guide rail direction of the first slide rail, thereby creating a gap between the guide roller and the correction component, and thus allowing the fabric to be inserted into the guide roller along the gap.

[0018] In some embodiments, the hem machine includes a second drive motor, the correction device includes a sensor, the fixed bracket includes a mounting frame, the guide roller and the second drive motor are mounted on the mounting frame, the mounting frame includes a fixing clamp and a connecting rod, the fixing clamp is fixed on the guide roller, the connecting rod is movably clamped on the fixing clamp and can move along the axial direction of the guide roller, and the sensor is fixed on the connecting rod, the sensor being a position detection sensor.

[0019] In this way, by fixing the position detection sensor to the column of the mounting bracket of the fixed support with a fixing clip, the position of the fixing clip on the column can be easily adjusted, so that the predetermined position on the guide roller can be freely adjusted according to actual needs.

[0020] The heel counter of this application includes a base, a fixed bracket, and a correction device as described above.

[0021] In some embodiments, the base of the swing mechanism includes a fourth slide rail and a third slider, and the fixed bracket is slidably connected to the fourth slide rail via the third slider.

[0022] In this way, the correction device is connected to the base of the lower helix machine via the fourth slide rail and the third slider, so that the fixed bracket can be adjusted to the position on the fourth slide rail, thereby making it easy to adjust the position of the correction device on the base of the lower helix machine.

[0023] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0024] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein:

[0025] Figure 1 This is a structural schematic diagram of the helical mechanism according to certain embodiments of this application;

[0026] Figure 2 This is a rear view of a hem machine according to certain embodiments of this application;

[0027] Figure 3 This is a schematic diagram of the structure of the correction device according to some embodiments of this application;

[0028] Figure 4 This is a schematic diagram of the structure of the correction device according to some embodiments of this application;

[0029] Figure 5 This is a cross-sectional view of a correction device according to certain embodiments of this application;

[0030] Figure 6 This is a schematic diagram of the crank structure according to some embodiments of this application;

[0031] Figure 7 This is a flowchart illustrating the correction method of some embodiments of this application.

[0032] Icon labels:

[0033] 100. Hem lowering mechanism; 10. Fixed bracket; 11. Horizontal plate; 12. Vertical plate; 13. Cylinder; 14. Third slide rail; 15. Mounting bracket; 151. Fixing clamp; 152. Connecting rod; 20. Guide roller; 30. Correction device; 31. First drive motor; 311. Rotary shaft; 32. Crank-slider assembly; 321. Crank; 3211. Fixing rod; 3212. Mounting clamp; 3213. Cam roller; 322. First slide rail; 323. First slider; 324. Second slide rail; 325. Connecting rod; 33. Correction component; 331. Rotary cylinder; 3311. One-way bearing; 332. Synchronous rotating shaft; 3321. First synchronous rotating shaft; 33 22. Second synchronous rotating shaft; 333. Synchronous bearing; 3331. First synchronous bearing; 3332. Second synchronous bearing; 3333. Third synchronous bearing; 3334. Fourth synchronous bearing; 334. Gear; 3341. First gear; 3342. Second gear; 3343. Third gear; 3344. Fourth gear; 34. Second slider; 35. Limiting piece; 351. Protrusion; 36. Limiting seat; 37. Elastic element; 38. Third drive motor; 39. Limiting block; 30a. Rotating shaft; 30b. Transmission element; 30c. Sensor; 40. Second drive motor; 50. Base; 51. Fourth slide rail; 52. Third slider. Detailed Implementation

[0034] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0035] In the description of this application, it should be understood that the terms "thickness," "upper," "top," "bottom," "inner," "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly. In one example, they can be a fixed connection, a detachable connection, or an integral connection; they can be a mechanical connection, an electrical connection, or a connection that allows communication between them; they can be a direct connection or an indirect connection through an intermediate medium; they can be the internal connection of two elements or the interaction between two elements.

[0037] In embodiments of this application, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0038] Please see Figure 1The correction device 30 of this application embodiment is used in the hem machine 100. The hem machine 100 includes a fixed bracket 10 and a guide roller 20 disposed on the fixed bracket 10. The correction device 30 includes a first drive motor 31, a crank slider assembly 32 and a correction component 33 disposed on the fixed bracket 10. The first drive motor 31 includes a rotating shaft 311; the crank-slider assembly 32 includes a crank 321, a first slide rail 322, a first slider 323, a second slide rail 324, and a connecting rod 325. The first slide rail 322 is mounted on the fixed bracket 10, the first slider 323 is slidably mounted on the first slide rail 322, the second slide rail 324 is mounted on the first slider 323, and the connecting rod 325 is slidably mounted on the second slide rail 324. The guide of the first slide rail 322 is parallel to the axial direction of the guide roller 20, and the guide of the second slide rail 324 is perpendicular to the axial direction of the guide roller 20. The crank 321 connects the rotating shaft 311 and the connecting rod 325; the correction element 33 is mounted at the end of the connecting rod 325 away from the crank 321, and is used to push or pull the fabric located on the guide roller 20 for correction under the drive of the first drive motor 31 and the crank-slider assembly 32.

[0039] Thus, during the correction process, the drive motor drives the crank 321 to rotate. The connecting rod 325, connected to the crank 321, decomposes the circular motion of the crank 321 into linear motion along the first slide rail 322 and the second slide rail 324 under the restriction and guidance of the first slide rail 322 and the second slide rail 324. Since the guide of the first slide rail 322 is parallel to the axial direction of the guide roller 20, and the guide of the second slide rail 324 is perpendicular to the axial direction of the guide roller 20, the movement of the connecting rod 325 is restricted to the back-and-forth movement along the axial direction of the guide roller 20 and the up-and-down movement along the axial direction perpendicular to the guide roller 20. Therefore, the correction component 33 can mimic the pushing and pulling action of a finger. Driven by the up-and-down movement of the connecting rod 325, it contacts the fabric. While in contact with the fabric, it pushes and pulls the fabric under the drive of the back-and-forth movement of the connecting rod 325, then separates from the fabric, and then contacts the fabric again under the drive of the up-and-down movement of the connecting rod 325. This process is repeated until the fabric is corrected. Therefore, the correction device 30 can replace manual correction, with high accuracy and efficiency.

[0040] The hem sewing machine 100 includes a fixed bracket 10 and a guide roller 20. The guide roller 20 is mounted on the fixed bracket 10. When sewing the hem of fabric, the hem of the fabric needs to be fitted onto the guide roller 20. The movement of the guide roller 20 drives the fabric to move, allowing for sewing at different positions on the hem. However, during the fabric's movement, due to external interference, the fabric cannot move in a straight line along the guide roller 20, causing the fabric to deviate and affecting the sewing effect. Therefore, by installing a correction device 30 on the hem sewing machine 100, the deviated fabric on the guide roller 20 can be corrected, thus ensuring the sewing effect.

[0041] Specifically, the correction device 30 includes a first drive motor 31, a crank-slider assembly 32, and a correction component 33. The first drive motor 31 includes a rotating shaft 311. The first drive motor 31 can be fixed to the fixed bracket 10 by means of bolt connection, riveting, adhesive connection, or welding. The fixed bracket 10 has a through hole, the size of which is adapted to the rotating shaft 311, so that the rotating shaft 311 passes through the through hole.

[0042] The crank-slider assembly 32 includes a crank 321, a first slide rail 322, a first slider 323, a second slide rail 324, and a connecting rod 325. The crank 321 is mounted on the fixed bracket 10 and can be connected to the rotating shaft 311. The connecting rod 325 can also be connected to the crank 321. It should be noted that the crank 321 may include a fixed rod 3211, a mounting clip 3212, and a cam roller 3213. The fixed rod 3211 is rotatably mounted on the fixed bracket 10, the mounting clip 3212 is clamped onto the fixed rod 3211, and the cam roller 3213 is mounted on the mounting clip 3212. By connecting the rotating shaft 311 and the fixed rod 3211, the first drive motor 31 can drive the rotating shaft 311 to rotate, and the rotating shaft 311 can drive the fixed rod 3211 to rotate, thereby enabling the first drive motor 31 to drive the crank 321 to rotate. The connecting rod 325 can be fixed on the cam roller 3213, so that the cam roller 3213 can rotate to drive the connecting rod 325 to rotate.

[0043] The first slide rail 322 is mounted on the side of the fixed bracket 10 that is backed by the first drive motor 31. The first slider 323 is disposed on the first slide rail 322 and can slide along the first slide rail 322. The guide of the first slide rail 322 is parallel to the axial direction of the guide roller 20.

[0044] The second slide rail 324 is disposed on the side of the first slider 323 opposite to the first slide rail 322, and the connecting rod 325 is mounted on the second slide rail 324, so that the connecting rod 325 can move along the second slide rail 324. The guide of the second slide rail 324 is perpendicular to the axis of the guide roller 20.

[0045] The correction component 33 is installed at the end of the connecting rod 325 away from the crank 321 and can reciprocate to squeeze the fabric on the guide roller 20 during operation. When the fabric needs to be corrected, the correction component 33 can be driven by the first drive motor 31 and the crank-slider assembly 32 to pull or push the fabric that has deviated on the guide roller 20, so that the fabric can return to the preset position.

[0046] Please see Figure 3 and Figure 4In some embodiments, the correction device 30 includes a second slider 34, a limiting piece 35, a limiting seat 36, and an elastic element 37. The second slider 34 is slidably disposed on the connecting rod 325. The limiting piece 35 is fixed on the second slider 34. The limiting seat 36 is fixed to the end of the connecting rod 325 away from the crank 321. The limiting seat 36 is configured to push the limiting piece 35 upward when the connecting rod 325 moves upward. The elastic element 37 connects the limiting piece 35 and the limiting seat 36 and is configured to force the limiting piece 35 to abut against the limiting seat 36 when the connecting rod 325 moves upward or downward. The elastic element 37 continues to stretch when the correction element 33 contacts the fabric and the connecting rod 325 continues to move toward the guide roller 20, so as to ensure elastic contact between the correction element 33 and the guide roller 20.

[0047] Thus, by setting a limiting piece 35, a limiting seat 36, and an elastic element 37 on the correction device 30, and connecting the limiting piece 35 and the limiting seat 36 through the elastic element 37, when the rotating drum 331 contacts the fabric, the elastic force of the elastic element 37 allows the rotating drum 331 to fully compress the fabric, and prevents the limiting piece 35 and the limiting seat 36 from separating during the movement of the guide roller 20, which would cause the moving trajectory of the rotating drum 331 to change, thereby affecting the correction effect of the fabric.

[0048] In order to prevent the correction device 30 from moving excessively toward the fabric, when the correction device 30 corrects the deviation of the fabric, a limiting structure is required in the correction device 30 to restrict the correction device 30 from moving excessively toward the fabric.

[0049] Specifically, the correction device 30 includes a second slider 34, a limiting piece 35, a limiting seat 36, and an elastic element 37. The second slider 34 is slidably mounted on the connecting rod 325, or the second slider 34 may be provided with a slide rail, and the connecting rod 325 may be mounted on the slide rail, so that the second slider 34 can slide along the slide rail on the connecting rod 325. The limiting piece 35 is fixed to the end of the second slider 34 near the crank 321, and the limiting seat 36 is fixed to the end of the connecting rod 325 away from the crank 321. The limiting seat 36 is L-shaped, and the second slider 34 can be held by the limiting seat 36, so that when the connecting rod 325 moves upward, the second slider 34 and the limiting piece 35 can be pushed upward.

[0050] The limiting piece 35 and the limiting seat 36 can be connected by an elastic element 37. This allows the second slider 34 to abut against the limiting seat 36 and the limiting piece 35 when the connecting rod 325 moves upward or downward. Furthermore, the limiting seat 36 is stretched as the connecting rod 325 continues to move towards the guide roller 20 while the correction element 33 contacts the fabric on the guide roller 20, ensuring elastic contact between the correction element 33 and the guide roller 20. For example, the elastic element 37 can be a spring, and if the spring force is insufficient to limit the correction device 30, multiple springs can be used.

[0051] Please see Figure 3 In some embodiments, the correction device 30 includes a limiting block 39 fixed on a limiting seat 36, a limiting piece 35 having a protrusion 351, and the limiting block 39 being configured to abut against the protrusion 351 when the connecting rod 325 moves upward or downward.

[0052] Thus, by setting a limiting block 39 on the limiting seat 36, and making the limiting block 39 abut against the protrusion 351 formed by the limiting piece 35 when the lever moves, it is possible to prevent the elastic element 37 from being over-compressed, which would cause the rotating drum 331 to over-squeeze the fabric and cause wrinkles.

[0053] Specifically, the correction device 30 also includes a limiting block 39, which can be fixed to the limiting seat 36 by bolting, welding or adhesive connection. The limiting plate 35 has a protrusion 351 formed along the direction of the tie rod axis. The protrusion 351 can be arranged opposite to the limiting block 39. When the connecting rod 325 moves upward, the limiting seat 36 forces the limiting block 39 to abut against the protrusion 351; when the connecting rod 325 moves downward, the limiting plate 35 forces the protrusion 351 to abut against the limiting block 39.

[0054] Please refer to it again. Figure 1 and Figure 2 In some embodiments, the hem machine 100 includes a second drive motor 40 for driving the guide roller 20 to rotate, the correction component 33 includes a rotating drum 331, and the correction device 30 includes a third drive motor 38, which is mounted on the connecting rod 325. The third drive motor 38 is used to drive the rotating drum 331 to rotate so that the linear velocity of the rotating drum 331 in contact with the fabric is opposite in direction but the same in magnitude as the linear velocity of the guide roller 20 in contact with the fabric.

[0055] In this way, the drive motor drives the guide roller 20 and the rotating drum 331 to rotate respectively, and the linear velocity direction of the rotating drum 331 is set to be opposite to that of the guide roller 20, while the size is set to be the same. This can prevent the rotating drum 331 from being in the opposite direction to the fabric when it contacts the fabric on the guide roller 20, thus avoiding the fabric being pulled and wrinkled, which would affect the hemming and sewing effect.

[0056] Specifically, the hem machine 100 is equipped with a second drive motor 40, which can be connected to the guide roller 20. The second drive motor 40 drives the guide roller 20 to rotate, which can move the fabric on the guide roller 20, thereby enabling sewing at different positions of the fabric.

[0057] The correction component 33 includes a rotating drum 331, which can be connected to a third drive motor 38 mounted on the correction device 30. The third drive motor 38 is mounted on a connecting rod 325, allowing the third drive motor 38 to drive the rotating drum 331 to rotate. By setting the linear velocities of the second drive motor 40 and the third drive motor 38 to be opposite, the rotating drum 331 can rotate along the direction of fabric movement, thus preventing the fabric from wrinkling when the rotating drum 331 contacts the fabric on the guide roller 20, which would affect the sewing effect. By setting the linear velocities of the second drive motor 40 and the third drive motor 38 to be the same, when the rotating drum 331 contacts the fabric on the guide roller 20, it can prevent the fabric from being pulled due to the difference in linear velocities between the second drive motor 40 and the third drive motor 38, thus avoiding greater fabric deviation and affecting the sewing effect.

[0058] Please see Figure 3 and Figure 5 In some embodiments, the correction element 33 includes a synchronous shaft 332, a synchronous bearing 333, and a gear 334. The rotating drum 331 is disposed on the synchronous shaft 332, the synchronous bearing 333 is sleeved on the synchronous shaft 332, and the gear 334 is connected to the third drive motor 38 and the synchronous shaft 332 and is configured to drive the rotating drum 331, the synchronous shaft 332, and the synchronous bearing 333 to rotate when driven by the third drive motor 38.

[0059] Thus, in the correction component 33, the drive motor and the rotating drum 331 are connected by the gear 334, the synchronous rotating shaft 332 and the synchronous bearing 333, so that the drive motor can drive the rotating drum 331 to rotate and cooperate with the guide roller 20, thereby achieving the correction of the fabric through the rotation of the rotating drum 331.

[0060] Specifically, the correction component 33 includes a synchronous rotating shaft 332, a synchronous bearing 333, and a gear 334. The synchronous rotating shaft 332 includes a first synchronous rotating shaft 3321 and a second synchronous rotating shaft 3322. A rotating drum 331 is mounted on the second synchronous rotating shaft 3322 and includes a one-way bearing 3311. When the linear velocities of the rotating drum 331 and the guide roller 20 are inconsistent, the linear velocity of the rotating drum 331 can be adjusted to match the linear velocity of the guide roller 20 by slipping the one-way bearing 3311. The synchronous bearing 333 includes a first synchronous bearing 3331, a second synchronous bearing 3332, a third synchronous bearing 3333, and a fourth synchronous bearing 3334. The gear 334 includes a first gear 3341, a second gear 3342, a third gear 3343, and a fourth gear 3344.

[0061] The first gear 3341 can be connected to the third drive motor 38. The second gear 3342 and the third gear 3343 are respectively sleeved on opposite ends of the first synchronous shaft 3321, and the second gear 3342 can mesh with the first gear 3341. The first synchronous bearing 3331 and the second synchronous bearing 3332 are respectively sleeved on opposite ends of the first synchronous shaft 3321 and are located between the second gear 3342 and the third gear 3343. The third synchronous bearing 3333 and the fourth synchronous bearing 3334 are respectively sleeved on the second synchronous shaft 3322. The fourth gear 3344 is set on the second shaft 311 and is located between the rotating cylinder 331 and the fourth synchronous bearing 3334. The fourth gear 3344 can mesh with the third gear 3343.

[0062] When the fabric is being straightened, the third drive motor 38 is in operation, driving the first gear 3341 to rotate. The first gear 3341 then drives the second gear 3342 to rotate. The second gear 3342 then drives the first synchronous shaft 3321, the first synchronous bearing 3331, and the second synchronous bearing to rotate. The first synchronous shaft 3321 then drives the third gear 3343 to rotate. The third gear 3343 then drives the fourth gear 3344 to rotate. Finally, the fourth gear 3344 drives the second synchronous shaft 3322, the third synchronous bearing 3333, and the fourth synchronous bearing 3334 to rotate. The second synchronous shaft 3322 then drives the rotating drum 331 to rotate.

[0063] Please refer to it again. Figure 1 and Figure 2In some embodiments, the correction device 30 includes two sets of crank-slider assemblies 32 and two correction elements 33. The correction device 30 includes a rotating shaft 30a 311 and a transmission element 30b. The rotating shaft 30a 311 is rotatably mounted on the fixed bracket 10. The transmission element 30b connects the rotating shaft 311 and the rotating shaft 30a 311. The two sets of crank-slider assemblies 32 are disposed on both sides of the rotating shaft 30a 311 and are configured such that when the rotating shaft 311 rotates, the two sets of crank-slider assemblies 32 move alternately to cause the two correction elements 33 to alternately push and pull the fabric located on the guide roller 20.

[0064] Thus, by setting two crank-slider assemblies 32 connected by a rotating shaft 311 on the correction device 30, the two crank-slider assemblies 32 can alternately correct the fabric on the guide roller 20 when the motor drives the rotating shaft 311 to move, thereby achieving continuous correction of the fabric.

[0065] Specifically, when the fabric is being corrected on the guide roller 20, the rotating drum 331 needs to be in constant contact with the fabric to pull or push it, so as to avoid the fabric being in a free state on the guide roller 20 because the rotating drum 331 is not pulling or pushing it. Thus, by setting two sets of crank 321 sliding components and two sets of correction components 33 in the correction device 30 to alternately correct the fabric, the fabric can be corrected at all times.

[0066] The correction device 30 includes a rotating shaft 30a311 and a transmission component 30b. By opening a through hole in the fixed bracket 10, the rotating shaft 30a311 can be installed on the fixed bracket 10 through the through hole. Two sets of crank-slider assemblies 32 are installed on both sides of the rotating shaft 30a311, and the two sets of crank-slider assemblies 32 are rotated with a phase difference of 180 degrees. The rotating shaft 30a311 and the rotating shaft 311 are connected by the transmission component 30b. When the rotating shaft 311 rotates, the transmission component 30b drives the two sets of crank-slider assemblies 32 to move alternately, so that the two correction components 33 can alternately push and pull the fabric located on the guide roller 20. In this design, the transmission component 30b can be an annular conveyor belt. Two sets of crank-slider assemblies 32 are connected to the rotating shaft 30a311 via two cam rollers 3213. The two cam rollers 3213 are 180 degrees out of phase, ensuring that one of the two correction components 33 is always in contact with the fabric while the other is not. The periods of contact and disengagement are both half a rotation cycle of the rotating shaft 30a311. This allows each correction component 33 to maintain contact with the guide roller 20 for half the time, enabling continuous fabric correction.

[0067] Please see Figure 1 and Figure 2In some embodiments, the fixed bracket 10 includes a horizontal plate 11, a vertical plate 12, a cylinder 13, and a third slide rail 14 disposed on the vertical plate 12. The horizontal plate 11 is disposed on the third slide rail 14, and the cylinder 13 is disposed on the vertical plate 12 and is configured to drive the horizontal plate 11 to move on the third slide rail 14 when the cylinder 13 is in the working state. The horizontal plate 11 is parallel to the axial direction of the guide roller 20, the vertical plate 12 is perpendicular to the axial direction of the guide roller 20, and the guide of the third slide rail 14 is perpendicular to the axial direction of the guide roller 20.

[0068] Thus, by providing a first slide rail 322 on the upright plate 12 of the fixed bracket 10, and by moving the horizontal plate 11 along the first slide rail 322, the correction component connected to the horizontal plate 11 can be moved away from the guide roller 20 along the guide rail direction of the first slide rail 322, thereby creating a gap between the guide roller 20 and the correction component, and thus allowing the fabric to be inserted into the guide roller 20 along the gap.

[0069] Before the hem machine 100 is started, the correction component 33 and the guide roller 20 are in contact with each other, and the fabric cannot be put onto the guide roller 20 for sewing. Therefore, it is necessary to move the correction device 30 to make a gap between the correction component 33 and the guide roller 20 so that the fabric can be put onto the guide roller 20.

[0070] Specifically, the fixed bracket 10 includes a vertical plate 12, a horizontal plate 11, a cylinder 13, and a third slide rail 14. The vertical plate 12 is oriented perpendicular to the axis of the guide roller 20. The third slide rail 14 and the cylinder 13 are mounted on the vertical plate 12, and the guide of the third slide rail 14 is perpendicular to the axis of the guide roller 20. The horizontal plate 11 is mounted on the third slide rail 14, and the direction of the horizontal plate 11 is parallel to the axis of the guide roller 20.

[0071] When the cylinder 13 is in working condition, it can drive the horizontal plate 11 to move on the third slide rail 14, so that the correction device 30 can move away from the guide roller 20, and then there can be a gap between the correction component 33 and the guide roller 20 so that the fabric can be put into the guide roller 20.

[0072] Please see Figure 1 and Figure 2 In some embodiments, the hem machine 100 includes a second drive motor 40, the correction device 30 includes a sensor 30c, the fixed bracket 10 includes a mounting frame 15, the guide roller 20 and the second drive motor 40 are mounted on the mounting frame 15, the mounting frame 15 includes a fixing clamp 151 and a connecting rod 152, the fixing clamp 151 is fixed on the guide roller 20, the connecting rod 152 is movably clamped on the fixing clamp 151 and can move along the axial direction of the guide roller 20, and the sensor 30c is fixed on the connecting rod 152. The sensor 30c is a position detection sensor 30c.

[0073] In this way, the position detection sensor 30c is fixed to the column of the mounting bracket 15 of the fixed support 10 by the fixing clip 151, and the position of the fixing clip 151 on the column can be easily adjusted, so that the predetermined position on the guide roller 20 can be freely adjusted according to actual needs.

[0074] Before activating the correction device 30, the hem machine 100 needs to determine whether the fabric has shifted, i.e., whether the fabric is not in the preset sewing position. Once the hem machine 100 determines that the fabric is not in the preset sewing position, it activates the correction device 30 to correct the fabric's deviation.

[0075] Specifically, the hem machine 100 includes a second drive motor 40, which drives the guide roller 20 to rotate. The second drive motor 40 and the guide roller 20 are mounted on a mounting bracket 15. The correction device 30 also includes a sensor 30c, which can be a position detection sensor, such as a laser sensor 30c or an ultrasonic sensor 30c. The mounting bracket 15 also includes a fixing clamp 151 and a connecting rod 152. The sensor 30c is fixed on the connecting rod 152, the fixing clamp 151 is fixed on the guide roller 20, and the connecting rod 152 is clamped on the fixing clamp 151. The position of the connecting rod 152 on the fixing clamp 151 can be adjusted movably along the axial direction of the guide roller 20, thereby facilitating the adjustment of the detection position of the sensor 30c on the guide roller 20.

[0076] Please see Figure 1 In some embodiments, the base 50 of the swing mechanism 100 includes a fourth slide rail 51 and a third slider 52, and the fixed bracket 10 is slidably connected to the fourth slide rail 51 via the third slider 52.

[0077] Thus, the correction device 30 is connected to the base 50 of the lower helix machine 100 via the fourth slide rail 51 and the third slider 52, so that the fixed bracket 10 can be adjusted on the fourth slide rail 51, thereby making it convenient to adjust the position of the correction device 30 on the base 50 of the lower helix machine 100.

[0078] Specifically, the hem-lifting machine 100 includes a base 50, a fixed bracket 10, and a correction device 30. The base 50 includes a fourth slide rail 51 and a third slider 52. The guide of the fourth slide rail 51 is perpendicular to the axis of the guide roller 20. The third slider 52 is disposed on the fourth slide rail 51, so that the third slider 52 can move along the fourth slide rail 51. The fixed bracket 10 is disposed on the third slider 52, so that the third slider 52 can drive the fixed bracket 10 to move on the fourth slide rail 51. Thus, the position of the correction device 30 on the base 50 of the hem-lifting machine 100 can be adjusted according to the size of the fabric.

[0079] Please see Figure 7The correction method of this application is used in a correction device 30, which includes a sensor 30c, a first drive motor 31, a crank-slider assembly 32, and a correction element 33. The correction method includes:

[0080] Step 011: Acquire detection data of the fabric position detected by sensor 30c;

[0081] Step 012: Determine whether the fabric position has shifted based on the detection data;

[0082] Step 013: If the fabric position shifts, obtain the fabric offset in real time. The offset includes over-correction and under-correction.

[0083] Step 014: Determine whether the offset is overcorrected or undercorrected;

[0084] Step 015: Control the first drive motor 31 to drive the crank-slider assembly 32 to rotate according to the offset, and control the correction component 33 to push or pull the fabric to correct the deviation under the drive of the crank-slider assembly 32.

[0085] Specifically, when the fabric is rotated on the guide roller 20 of the hem machine 100, the sensor 30c needs to constantly detect whether the fabric is located at the detection point on the guide roller 20 and upload the detection data to the controller on the hem machine 100.

[0086] After receiving the detection data, the controller needs to determine whether the fabric has shifted on the guide roller 20. If it is determined that the fabric has shifted on the guide roller 20, the controller obtains the amount of fabric shift in real time through the sensor 30c and uploads the amount of shift to the controller. The controller then determines whether the fabric is in an over-corrected or under-corrected position. It should be noted that over-correction means that the fabric is over-corrected by the correction device 30, causing most of the fabric to exceed the detection position of the sensor 30c. Under-correction means that the fabric is not corrected by the correction device 30 to the extent that it reaches the detection position of the sensor 30c.

[0087] After acquiring the offset, the controller represents the offset as B. B=0 indicates under-correction, and B=1 indicates over-correction. The controller monitors and records the fabric offset in real time based on the correction amount, recording the number of over-corrections as G and the number of under-corrections as Q. The functional relationship between the number of corrections and the correction amount can be expressed as:

[0088]

[0089] The correction speed V of the correction device 30 changes with the variables G and Q, i.e., V = F(G, Q), and the expression is:

[0090]

[0091] The function f(x) is the acceleration function of the correction speed V, meaning that the larger the offset, the faster the correction speed. This acceleration function can be a monotonically increasing function of any type, for example, f(x) = a × x n +v0, where a and n are constants, and v0 represents the initial velocity for correction.

[0092] After determining the offset, the controller can control the rotation of the shaft 311 of the first drive motor 31 to rotate. The shaft 311 can be connected to the crank 321 of the crank-slider assembly 32, so that the controller can control the first drive motor 31 to drive the crank-slider assembly 32 to rotate.

[0093] The connecting rod 325 in the crank-slider assembly 32 can be connected to the crank 321, and the correction element 33 is located at the end of the connecting rod 325 away from the crank 321, so that the correction element 33, under the control of the controller, can push or pull the fabric located on the guide roller 20 for correction under the drive of the first drive motor 31 and the crank-slider assembly 32.

[0094] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0095] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one feature. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0096] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A correction device for a hem machine, characterized in that, The hem machine includes a fixed bracket and a guide roller disposed on the fixed bracket, and the correction device includes: A first drive motor is mounted on the fixed bracket, and the first drive motor includes a rotating shaft; A crank-slider assembly includes a crank, a first slide rail, a first slider, a second slide rail, and a connecting rod. The first slide rail is mounted on a fixed bracket, the first slider is slidably mounted on the first slide rail, the second slide rail is mounted on the first slider, and the connecting rod is slidably mounted on the second slide rail. The guide of the first slide rail is parallel to the axial direction of the guide roller, and the guide of the second slide rail is perpendicular to the axial direction of the guide roller. The crank connects the rotating shaft and the connecting rod. A correction component is disposed at the end of the connecting rod away from the crank, and is used to push or pull the fabric located on the guide roller for correction under the drive of the first drive motor and the drive of the crank-slider assembly. The correction device includes a second slider, a limiting piece, a limiting seat, and an elastic element. The second slider is slidably disposed on the connecting rod. The limiting piece is fixed on the second slider. The limiting seat is fixed to the end of the connecting rod away from the crank. The limiting seat is configured to push the limiting piece upward when the connecting rod moves upward. The elastic element connects the limiting piece and the limiting seat and is configured to force the limiting piece to abut against the limiting seat when the connecting rod moves upward or downward. Furthermore, it continues to stretch when the correction element contacts the fabric and the connecting rod continues to move toward the guide roller, thereby ensuring elastic contact between the correction element and the guide roller.

2. The correction device according to claim 1, characterized in that, The correction device includes a limiting block fixed on the limiting seat, and the limiting plate has a protrusion. The limiting block is configured to force the limiting block to abut against the protrusion when the connecting rod moves upward or downward.

3. The correction device according to claim 1, characterized in that, The hem machine includes a second drive motor for driving the guide roller to rotate. The correction component includes a rotating drum. The correction device includes a third drive motor, which is mounted on the connecting rod. The third drive motor drives the rotating drum to rotate so that the linear velocity of the rotating drum in contact with the fabric is opposite in direction but the same in magnitude as the linear velocity of the guide roller in contact with the fabric.

4. The correction device according to claim 3, characterized in that, The correction component includes a synchronous shaft, a synchronous bearing, and a gear. The rotating drum is mounted on the synchronous shaft, the synchronous bearing is sleeved on the synchronous shaft, and the gear connects the third drive motor and the synchronous shaft, and is configured to drive the rotating drum, the synchronous shaft, and the synchronous bearing to rotate when driven by the third drive motor.

5. The correction device according to claim 1, characterized in that, The correction device includes two sets of the crank-slider assemblies and two correction elements. The correction device includes a rotating shaft and a transmission element. The rotating shaft is rotatably mounted on the fixed bracket. The transmission element connects the rotating shaft and the rotating shaft. The two sets of crank-slider assemblies are located on both sides of the rotating shaft and are configured such that when the rotating shaft rotates, the two sets of crank-slider assemblies move alternately to cause the two correction elements to alternately push and pull the fabric located on the guide roller.

6. The correction device according to claim 1, characterized in that, The fixed bracket includes a horizontal plate, a vertical plate, a cylinder, and a third slide rail disposed on the vertical plate. The horizontal plate is disposed on the third slide rail, and the cylinder is disposed on the vertical plate and configured to drive the horizontal plate to move on the third slide rail when the cylinder is in the working state. The horizontal plate is parallel to the axial direction of the guide roller, the vertical plate is perpendicular to the axial direction of the guide roller, and the guide of the third slide rail is perpendicular to the axial direction of the guide roller.

7. The correction device according to claim 1, characterized in that, The hem lowering machine includes a second drive motor, the correction device includes a sensor, the fixed bracket includes a mounting frame, the guide roller and the second drive motor are mounted on the mounting frame, the mounting frame includes a fixing clamp and a connecting rod, the fixing clamp is fixed on the guide roller, the connecting rod is movably clamped on the fixing clamp and can move along the axial direction of the guide roller, and the sensor is fixed on the connecting rod, the sensor being a position detection sensor.

8. A hem-down machine, characterized in that, It includes a base, a fixed bracket, and a correction device as described in any one of claims 1 to 7.

9. The hem machine according to claim 8, characterized in that, The base of the lowering machine includes a fourth slide rail and a third slider, and the fixed bracket is slidably connected to the fourth slide rail via the third slider.

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